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03
i 83
JANUARY
VOLUME 38
40c A COPY
1963
NUMBER 1
$3.00 A YEAR
Investment Opportunity
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ing the Treasury's Payroll Savings Plan for U.S. Savings
Bonds. When you bring the Payroll Savings Plan into your
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In America's future. In freedom itself.
Don't pass this investment opportunity by. Call your
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fS&
Ve b**
in your plant... promote the PAYROLL SAVINGS PLAN for U.S. SAVINGS BONDS
The U. S. Government does not pay for this advertisement. The Treasury Department thanks, for their patriotism, The Advertising Council and this magazine.
International Projectionist
INTERNATIONAL
PROJECTIONIST
Including a special Audio-Visual section relat-
ing to the operation and maintenance of A-V
equipment in the educational and industrial
fields.
Volume 38 January, 1963 No. 1
FRANK W. COOLEY, JR.
Editor and Publisher
MIDWEST OFFICE
1645 Hennepin Avenue
Minneapolis 3, Minnesota
AL BLOOM
Managing Editor
RAY GALLO
General Manager
Associate Publisher
EAST COAST OFFICE
545 Fifth Avenue
New York 17, N. Y.
Murray Hill 7-7746
TOM KENNEDY
Equipment Editor
IN THIS ISSUE
Projectionist News 4
Improvement of Theatres 5
By D. E. HYNDMAN
Up-Dating the Disc Reproducer 6
By ROBERT A. MITCHELL
Arc-Lamp Demonstrations 8
Automatic Projection1 14
News Notes — Technical Hints — Miscellaneous Notes
INTERNATIONAL PROJECTIONIST, published monthly by the
International Projectionist Publishing Co. division of The
Northern Publishing Co., Post Office Box 6174, Minneapolis
24, Minnesota. Editorial offices, 1645 Hennepin Avenue,
Minneapolis 3, Minn. Subscription Representatives: AUS-
TRALIA—McGills, 183 Elizabeth St., Melbourne; NEW
ZEALAND — Wixon's, Ltd., 64 Courtnay Place, Wellington;
ENGLAND and ELSEWHERE — Wm. Dawson & Sons, Ltd.,
Macklin St., London, W. C. 2. Subscription Rates: United States,
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per year and $7.00 for two years. Changes of address should
be submitted four weeks in advance of publication date to
insure receipt of current issue. Second-class postage paid at
Minneapolis, Minn. INTERNATIONAL PROJECTIONIST as-
sumes no responsibility for personal opinions appearing in
signed articles, or for unsolicited articles. Entire contents
copyrighted 1963 by INTERNATIONAL PROJECTIONIST
PUBLISHING CO.
1
MONTHLY CHAT
Lip Service to Good Projection
The late Harold B. Franklin, when he was president
of the West Coast Theatres, published a book on motion
picture theatre management, which had this to say about
projection.
"Good projection is the heart of a motion picture the-
atre. Without a clear picture, with proper intensity of
light, all the management's efforts are in vain."
In other words, no matter if the theatre owner picks
and chooses from the available product supply those
attractions suited to his patrons; the clean, attractive and
comfortable surroundings; courteous service by the
theatre personnel; effective exploitation and advertising
in the city or community, all those efficient showman-
ship things go out the window if the theatre does not
have good projection, with up-to-date equipment for the
craftsmen in the theatre's booth.
Many progressive circuit heads and individual theatre
owners have long agreed that without good projection
the management, no matter how sufficient, is useless.
And the reason we quoted Franklin about good pro-
jection is because he rose through the ranks — usher to
theatre manager to general manager of Shea's Theatres
in Buffalo, to general manager of Publix Theatres and
finally to president of West Coast Theatres.
Still, many exhibitors who have out-dated equipment
think they can go along buying expensive pictures — in
these days theatres can't book low cost attractions — and
the patrons are cheated out of the modern techniques
the film maker puts in his picture at great cost.
There's now a rising trend to build new theatres and
do major remodeling of existing theatres, so that the
old and neglected theatres with worn-out booth equip-
ment will have to get new projectors, arc lamps, and
sound systems or face dwindling patronage.
So maybe the day will come for projectionists to
have modern projectors, arc lamps, sound systems and
all the necessary accessories — and the sooner the better.
Of course the projectionist who works with old
equipment will have to be on his toes, with the know-
how about the up-to-date projectors, lamps and sound
systems.
The theatre owner, having spent thousands of dollars
for new booth machines, has the right to demand that his
projectionists operate the new equipment efficiently.
The manufacturer or the dealer says the new equip-
ment will get all the details out of the print, with a rock-
steady picture, more light on the screen and with quality
sound. So the theatre owner won't be satisfied unless
it's the best picture he has ever seen, and will blame the
projectionist if it isn't perfect. (Tlie projectionist crew
should insist the installation man get things right, and
give a demonstration to the exhibitor on screen. )
The theatre owner also has the right to ask the pro-
jectionists to keep machines oiled, cleaned, with the
proper maintenance for all the equipment in the booth.
Rightly, the exhibitor expects the new equipment to last
for years, otherwise he has a bad investment, for pro-
jectors, lamps and sound systems are costly to buy.
This is a challenge the top craftsman will relish. After
all, the projectionist has great respect for his machines,
because he well knows that without the efficient tools
(Continued on Page 8)
International Projectionist
January, 1963
INTERNATIONAL PROJECTIONIST
Volume 38
January, 1963
Number 1
Albert S. Johnstone Dies;
Was IATSE Vice President
NEW ORLEANS— Albert S. John-
stone, fourth vicepresident of the
IATSE, died Jan. 2 following surgery
here. Although in poor health for
several years, he had continued to
handle a full schedule of union as-
signments prior to entering a hospital
several days before.
A native and lifelong resident of
New Orleans, Johnstone was edu-
cated at a private high school there
and at Tulane University. While still
in school, he became a rewind
boy at a movie house and later a
projectionist. For two years begin-
ning in 1928, he traveled for ERPI.
the predecessor of Altec Service
Corp., installing sound equipment
and instructing in the use of it.
A member of New Orleans Opera-
tors Local 293 since 1914, he be-
came secretary two years later and
served as president almost continu-
ously from 1919 until the time of his
death. In the course of his career,
which began when only two of the
city's theatres were organized, agree-
ments were reached with virtually all
of them.
Johnstone was appointed an IA
international representative in 1943
and was elected a vicepresident in
1954. Survivors include his wife,
Mary, and two daughters. iP
Loew's Building Theatre
in Suburb of Washington
NEW YORK— Arthur M. Tolchin,
assistant to the president of Loew's
Theatres, announced here that his
company is building an 800-seat sta-
dium type theatre in Springfield, Va.
( a suburb of Washington, D. C. I .
The new theatre will be erected in
the Towers Plaza Shopping Center,
located at Shirley Highway and
Edsal Road.
The theatre will be known as
Loew's Springfield, with the latest
developments in screen projection,
sound reproduction and modern
automatic air-conditioning. In addi-
tion there will be substantial park-
ing facilities.
Loew's Springfield is expected to
be ready for operation in early 1963.
iP
Projectionists Club Plays Santa
For III Kiddies in N.Y Hospitals
NEW YORK— Harry Garfman, the
Brooklyn and Queens business repre-
sentative of the M. P. Operator's
Local No. 306, and members of the
Movie Social Club of Kings County,
spent their Christmas week visiting
children's wards in Brooklyn pub-
lic hospitals distributing toys and
other gifts with presentations of
movies and live entertainment to sick
and needy youngsters.
Harry Garfman of MPO 306 and
youngsters in Brooklyn hospital wards.
Garfman and the Club — made up
of about 300 projectionists of Local
306 — have played Santa Claus for
the 20th consecutive year to under-
privileged children confined to hos-
pitals.
The Club, a humanitarian organiza-
tion, in addition to their yearly
Christmas effort, has conducted many
fund-raising campaigns for juvenile
illnesses.
Its current effort is on behalf of
Dr. Joseph B. Pincus, the director
of the Department of Pediatrics of
the Jewish Hospital. Dr. Pincus has
recently established a clinic for the
treatment of cystic fibrosis, diabetes,
epilepsy and other dreaded child-
hood diseases.
Harry Garfman. who is executive
director of the Movie Social Club,
and the members of the Club, have
a fund-raising campaign for the sup-
port and enlargement of the clinic.
iP
Camera Mart Sets Up
Film Editors Seminar
NEW YORK — The first annual
film editing workshop-seminar of the
Camera Mart, a New York company
specializing on sales, service and
rentals of motion picture and televi-
sion equipment, is set for Oct. 7-11,
1963, it was announced by Samuel
"Chick" Hyman, president of the
company.
The workshop-seminar for film
editors will concentrate on the spe-
cialized film editing practices and
problems encountered by industrial
in-plant, university and government
agency film editors.
All aspects of film editing will be
covered during the five-day pro-
gram, through technical demonstra-
tions, general lectures, workshop ses-
sions on practice editing projects.
In addition, participants will visit
well known New York film editing
facilities.
Browning Memorial Award
Mr. Hyman also announced the
Camera Mart's sponsorship of the
"Irving and Sam Browning Mem-
orial Award" to promising univer-
sity film production students. Par-
ticipating in this award are the mo-
tion picture departments of New
York University, the City College of
New York, and Columbia Univer-
sity.
The motion picture departments
heads at each of these three uni-
versities will designate the student
they believe has shown the most
promise. Each of the students chosen
will be given an award by The
Camera Mart worth $150 towards the
rental of professional motion picture
equipment. The first series of three
awards will be granted in June. 1963.
The award is a memorial for the two
founders of The Camera Mart. Irving
and Sam Browning. iP
ELECTED FOR 26TH TIME
NEW YORK— Morris J. Rotker. a
projectionist for 51 years and now
secretary to Judge Sidney H. Asch
in the Bronx Municipal Court, has
been reelected treasurer of his Mas-
onic Lodge for the 26th time.
iP
International Projectionist
January, 1963
HOW CAN MOTION PICTURE
THEATERS BE IMPROVED?
D. E. Hyndman, Assistant Vice President
Eastman Kodak Co.
In making suggestions to theater
owners, I have the great advantage
of not owning or operating a theater.
This permits me to suggest almost
anything that seems worthwhile
without any financial penalties in
case I am wrong. I hope you will
keep my privileged position in mind
throughout this article.
Perhaps we might just pause for a
moment and philosophize on the
things that, I think, motivate atten-
dance in motion-picture theatres.
One of the great characteristics the
motion picture has is its ability to
transform one — in the twinkling of
an eye — to another world. The min-
ute you walk in off the street and sit
down, you can forget what city you
are in, what problems you have,
what problems the world has, by
identifying yourself with the activity
on the screen. TV with its smaller
screen and generally more distracting
ambient atmosphere will never be
able to do it. The very good mind
can approach this with TV or by
reading a good book but no medium
can so engage the participant as
the motion picture shown in a good
theater.
We might consider the advance of
the motion-picture industry during
the great 1932 depression. People
flocked to see Dick Powell and Ruby
Keeler in "42nd Street." They flock-
ed in to achieve 90 minutes of relax-
ing participation in someone else's
escapades. The minute they walked
off the streets they were in another
world and the silver screen took them
into this other world.
People Want to be Absorbed
During World War II the millions
of men on duty around the world
achieved a few minutes "Change of
Pace" through the films that were
shown to them — and they stood in
line for a good long time to get into
the over-crowded base theaters to do
it.
What I'm trying to say is that
Ed. Note: Mr. Hyndman echoes the
pleas of projectionists for lo these many
years as he goes directly to the exhibi-
tors at the National Allied convention
in Cleveland. His remarks emphasize
the need for updated theatres to per-
mit the technicians to do the job re-
quired of today's patron.
International Projectionist
people want to become completely
absorbed with what is going on
before them on the screen. Regard-
less of their mental capabilities, the
motion picture is capable of achiev-
ing a sense of participation far
greater than any other medium I am
aware of.
Theater owners must nuture this
capability by presenting the film in
its optimum manner. They must
not place any roadblocks in the way
of the theater goer that will impede
his transformation from the harassed
businessman, housewife, student,
teen-ager or whatever he was when he
walked in.
If owners do throw these road-
blocks in my way, they are going to
lose me as a customer.
I like movies and manage to see
about a hundred or more every year.
But I am selective as to the theater I
attend. I don't like roadblocks — I
don't like to break my bones finding
a seat; I don't like to sit in a broken-
down seat: I don't like to smell ran-
cid butter and the like — nor does
anyone else when he has paid for
comfort. A theater must be a plea-
sant place to congregate with others,
with people who really want to go
to the movies.
Location is Important
Sometimes the best way to improve
a theater is a very radical one. It
consists in moving it from an un-
desirable location to a more suitable
and promising location. Any owner
who does this should carefully sur-
vey possible theater locations in his
town or city getting the best real-
estate advice which is available. The
theater should be placed near a
modern and growing center of popu-
lation. There are some strategic
neighborhoods where large numbers
of important apartments or housing
developments are being erected.
Being as close to these as possible is
a good idea. Furthermore, shopping
centers are often attractive locations
for a new theater. A great many
people are drawn to a shopping
center. Many of them find that they
have some time to spare and will
drop into a theater to enjoy the
show and rest their aching feet. A
big plus in a shopping center is the
large available parking area.
January, 1963
But a successful theater requires
more than a good location. It needs
modern, efficient, and properly main-
tained equipment. The best available
projectors are excellent devices and
capable of throwing a large, bright,
and sharp, steady picture on a good-
size screen. Economy in picture
brightness or sharpness is indeed
foolish since the picture is the major
part of what the exhibitor has to sell
his audience. The screen and its
surroundings are also of major im-
portance. Modern and capable
theater architects surround the screen
by framing, luminous or otherwise,
in such fashion as to make the pic-
ture blend into its surroundings thus
increasing naturalness. This is also
a good idea since the theater condi-
tions are quite different from those
in regular television viewing in the
home. And theater exhibition should
not resemble home entertainment if
it is to attract a maximum audience.
It is very important that the
quality of sound in all parts of the
house be excellent. This means that
the theater, possibly with some new
acoustic treatment, must have the
right amount and type of reverbera-
tion. Sound levels must not be too
high — a common failing in many
theaters. Speech and musical repro-
duction must be of the highest quality
even for people with somewhat im-
paired hearing, so that they can
understand all the dialogue and en-
joy musical accompaniment.
General Environment Should be Pleasant
Needless to say, the refreshment
section of the theater lobby should
be attractive but not garish. And it
'should not give the theater an
amusement-park atmosphere, but
rather emphasize the comfort and
convenience aspects. That is, it
should be readily accessible, but not
obstrusive.
Particular care is required for the
marquee, and lobby displays. Often
these are "busy," fussy, and confus-
ing. One main theme should be em-
phasized and everything kept sub-
ordinate in these displays so as to
avoid confusing the prospective
customer.
The general environment in the
(Continued on Page 18)
Theatre Sound • • •
Updating the
Disc Reproducer
By ROBERT A. MITCHELL
Projectionists are no strangers to the use of phono-
graph records for overture and intermission music
in the theatre. The projectionist not only plays the
records on a turntable in the projection room, but is
usually responsible for selecting the appropriate musical
Single groove of
constant depth.
MONAURAL
Doubly modulated.
ne signal on
each side)
STEREOPHONIC
FIG. 1 — An ordinary phonograph record (monaural) has
a constant-depth groove that varies from side to side in ac-
cordance with the recorded sound vibrations. There is thus
only one sound signal in the groove. A stereophonic record,
on the other hand, carries one signal on one wall, of the
groove and the other signal on the other wall, the two
sets of variations being separated by an angle of 90 degrees.
The combination of two channels of sound causes the depth
as well as the lateral position of the groove to vary.
6
numbers to use with each film program that comes
along.
Recorded music is admittedly "canned," and hence
lacking in the "immediacy" of live musicians per-
forming in the orchestra pit, but it should be remem-
bered that the motion-picture is itself canned entertain-
ment in the sense that it has been pre-recorded and
worked up into a finished product before being pre-
sented to the public. There is thus no disparity in char-
acter between the recorded music played before the
motion-picture presentations, or during intermissions,
and the audiovisual entertainment on the screen.
The advantages of recorded music are its ready
availability in the widest possible variety, its offerings
of music played by accomplished artists employing the
finest instrumental means, and its technical excellence
when reproduced by suitable equipment through modern
theatre sound systems. And compared with the cost of
live talent, records are inexpensive.
Incidental Music Indispensable
Only the very largest theatres can afford an orches-
tra in the pit or an organist to evoke musical magic
from the pipes of the "Mighty Wurlitzer." Other the-
atres must have recourse to recorded music for the
pleasure of the audience and to establish the appropriate
moods for maximum enjoyment of the pictures. A the-
atre without music during the pre-show and intermis-
sion invervals seems rather "barren" — an atmosphere
too cold to encourage frequent attendance. Incidental
music cannot be neglected by any theatre management
that aims to please its patrons and remain in business.
Phonograph records have been used in movie the-
atres ever since the inception of the electrical process
of recording and amplifying sound ( about 1925 ) . Silent
movies reigned supreme in the '20's, but some of the
very smallest theatres found it advantageous to substi-
tute electrically amplified phonograph records and
special musical transcriptions for the tinkling nickelo-
deon piano. More prosperous theatres nevertheless re-
tained "live" music because it could be perfectly keyed
in mood and tempo to the action on the screen. This
was particularly true of theatres having wondrous or-
chestral pipe organs which ordinarily cost much more
than the most expensive projection equipment. Indeed,
the organ was so popular that it continued to be played
during intermissions in many theatres long after talking
International Projectionist
January, 1963
oictures had banished the glamorous poetry of silent
pantomime from the screen forever.
Speech came to the screen with astonishing sudden-
ness, and in two distinctly different media of sound re-
cording. One form of the screen's new-found voice was
the 33V3-RPM Vitaphone disc record which ran in
synchronism with the film on a turntable geared to the
projector motor. The other was, of course, the photo-
graphic soundtrack printed on the film alongside of
the picture.
Projectionists thus spoke of "sound on disc" and
"sound on film" in the early days of talkies — the
days when critics of the new sound movies grumbled
that Hollywood lost its brains when it found its voice.
And to distinguish the reproduction of synchronous
sound on disc for the audio accompaniment of a movie
from the ordinary non- synchronous musical recordings
played before the show, the ordinary phonograph for
commercial 78-RPM discs was called a "non-sync."
This obsolete term is still used to some extent.
33!/3-RPM Discs Now Preferred
78-RPM phonograph records held the field for musi-
cal recordings in spite of the fact that 33%-RPM discs
had been used for the Vitaphone talkie records and for
radio transcriptions. The old Victor Talking Machine
Co. made a valiant attempt to introduce musical 33's
for home use, but without much success. Incidentally,
all these early SS^-RPM discs were made with the
same 3-mil grooves used for 78's, not the finer 1-mil
"microgrooves" now used for long-play records, and
they started playing at the inside groove and ended at
the outside rim.
Because 78's are no longer manufactured, and be-
cause a somewhat limited choice of music is available
on the doughnut-shaped 45's, the emphasis for theatre
music, as well as for music to be played in the home,
is definitely focused upon the SS^-RPM long-play
records. The theatre that has only a 45-RPM record
player is cheating itself of good music.
The record player used in the theatre should be of
the 4-speed type with a stereo cartridge in the 33%-
45 side of the pickup in order that all kinds, speeds,
and sizes of records may be played. Aside from the
retention of excellent 78's which are still present in
long-established collections of fine music, it is best
to add only hi-fi 33's to a record collection.
With the exception of a somewhat higher noise level
and a more restricted dynamic range, the later 78-RPM
discs made of plastic are the equals of any. Plastic 78's
are more resistant to wear than the soft and powdery
shellac records made for many years, but the hardest
and most wear-resistant records we know of were the
78's made for use with heavy acoustic reproducers in
the days before electric pickups. These ancient discs,
surprisingly, were also pressed from a material having a
shellac base!
Needle Wear Problem
Modern 33I/3-RPM long-play records are extraordi-
narily sensitive to needle wear. This is due to the finer
stylus point required to fit the fine 1-mil microgrooves,
and to the finer sound variations in the grooves oc-
casioned by extension of the high-frequency end of
the sound spectrum to 12,000-18,000 cycles and by an
(Continued on Page 12)
'here is a FIRST BEST in Anything!
In ARC LAMPS
IT IS THE OPTICALLY INTEGRATED
C S. ASHCRAFT'S
HHHnnn^HHHHH (f
®
JfariiW,,,
" ■ *rh
V ' "•
(If ■• ." mBF
.'• \'
t - Jp
(Patent Pending)
It does unheard of things in screen lighting. Such as ... up to
100% increase in screen side-lighting.
It works on any current from 78 to 115 amperes. It does it
on a single size positive carbon, 11mm in diameter.
It will exceed accepted industry standards in lighting an out-
door screen 52 feet wide. It is the answer to the ill-lighted
Drive-In screen up to 95 feet in width.
It is a miserly brute in its operating expenses. Saves you up
to 50% in carbon costs.
Want proof? Call your National Theatre Supply Co. man. He
will prove the CORE-LITE worth in indoor or drive-in theatres
with existing screens and lenses.
Trademark registered and copyrighted. Patent applied for.
The C. S. Ashcraft Mfg. Co., Inc.
36-32 Thirty Eighth Street, Long Island City, N. Y.
International Projectionist
January, 1963
Theatre Demonstrations Set Up
To Show Core-Lite's Effectiveness
NEW YORK — The new Ashcraft
Core-Lite projection arc lamp, spe-
cially designed and marketed to re-
place lamps burning 9mm copper
coated positive carbons and lamps
burning 9mm and 10mm black ro-
tating positive carbons in indoor the-
atres, now has a greatly increased
sales probability for drive-in the-
atres, according to the results of
tests recently completed and just
released by Clarence Ashcraft, in-
ventor and manufacturer of the new
lamp.
All previous tests on the new lamp,
before it was introduced to the the-
atre market, were conducted by us-
ing currents confined to ranges be-
tween 78 and 95 amperes. Within
these limitations, the lamp increased
screen lighting and light distribution
(side-lighting) up to 100%, and
saving in carbon costs were as much
as 50%.
Under the new tests, at current
ranges between 95 and 115 am-
peres, the discovery was made of
the even greater increased center
and side lighting which makes the
Core-Lite now particularly useful in
small to medium size drive-ins, the
inventor states. These higher cur-
rent tests followed tests made in
early December by Merle Chamber-
lain, technical supervisor for Metro-
Goldwyn-Mayer Pictures, at the com-
pany's studio in California. Remarks
made by Chamberlain, following the
coast tests were highly laudatory.
It has been stated by carbon com-
pany technicians and by field repre-
sentatives of the now defunct Motion
Picture Research Council that among
the thousands of drive-ins in the 350
to 800 car capacity range screen
light has been woefully inadequate.
The owners of these theatres have
been so informed and are well
aware of the poor light on their
screens. It has not been possible,
however, up to now to produce
greater screen light at costs these
smaller drive-in theatres could af-
ford. With Core-Lite, it is estimated
that carbon savings would more than
pay for additional Core-Lite equip-
ment expense in about 4Vk years.
This benefit would be in addition
to the resulting increase in screen
light, both center and at the sides,
where the drive-ins are most defi-
cient. Up to 20% in center lighting
and up to 100% increase in side
lighting will result by using the
Core-Lite, Ashcraft has stated.
National Theatre Supply Co., dis-
tributors of the lamp, has stated that
it will demonstrate the new Core-
There's Plenty for You At
CENTURY!
. . and from CENTURY only
dramatic. New ALL TRANSISTOR
sound systems
True high-fidelity,
distortion free.
*Low installation cost,
minimum space needs.
Increased reliability,
less maintenance.
No vacuum tubes, no
photoelectric cells.
*and the only American-made 70 mm 35
theatre projection systems
SEE
YOUR CENTURY
DEALER
. . . for bigger, brighter projection.
PROJECTOR CORP.
New York 19, N. Y.
Lite in theatre booths, using the the-
atre's now existing lenses and
screens, to support its claim for the
Core-Lite's efficiency, as contrasted
with the arc lamp equipment now in
the theatre. There will be a proven
greatly increased light, greater dis-
tribution of light, combined with
proven decreased carbon costs, ac-
cording to both the inventor and
the distributors.
In relation to its offered no-cost
demonstration in theatres, National
Theatre Supply Co.'s President, W.
J. Turnbull, has stated, "The Core-
Lite arc lamp is a piece of equip-
ment that most indoor and drive-in
theatres simply cannot afford to be
without. Any of our branch mana-
gers will arrange a demonstration to
prove the remarkable capabilities of
the new lamp." iP
25-30 Club Installs New
Officers at Dinner-Dance
NEW YORK— The 25-30 Club's
Annual Installation Dinner-Dance
were held in the grand ballroom of
the Hotel Empire here. Formal in-
stallation of the new slate of officers
occured at this festive occasion.
The club elected William C.
Anderson as president and Morris I.
Klapholz as vice president.
Reelected were Morris J. Rotker as
recording secretary, Jack Krimon as
financial secretary, and Nathan
Strauss as sergeant-at-arms. Harry
Bergoffen, trustee 1963, Charles
Sherman, trustee 1964, Robert Saun-
ders, trustee 1965 were in the in-
stallation ceremonies. iP
MONTHLY CHAT
(Continued from Page 3)
he can't get the results he is ambi-
tious to achieve.
If the theatre owner has confidence
in his projectionists, and the expert
communicates his knowlege of pro-
jection, he will consult the projec-
tionist on the new equipment he is
buying. Of course, the projection-
ist has a responsibility in that case.
But the good projectionist willingly
shoulders the responsibility, being
assured by his knowledge about the
modern theatre equipment, and is
in a way complemented by the ex-
hibitor's regard for his know-how
about projection and sound repro-
duction.
Meanwhile some exhibitors have
museum pieces in their booths and
advertise "wide screen" just like the
showcases; thus they pay lip service
to good projection. IP
International Projectionist
January, 1963
Requirements of a Proficient
Motion Picture Projectionist
Training of the young projectionist should start
with a mastering of the basic principles of his
craft — the working projectionist is his mentor.
By James A. Wagoner
This survey will review four basic
qualifications of a motion picture
projectionist. Since the inception of
television it has become increasingly
important that the theatre patron
benefit from the finest projection and
sound available because a superior
picture with good quality sound is
the one real asset of the motion
picture theatre.
The theatre customer becomes a
part of another world. Anytime this
illusion of "make-believe" breaks, the
basic goal of the motion picture
theatre suffers. In order to acquire
the skill of a good projectionist, one
must keep this thought uppermost
in his mind, for without it as a
goal, the other qualifications lose
their meaning through lack of pur-
pose. In order for a projectionist to
perform his duties well, he must be
come proficient in the following four
areas :
1. Electronics
2. Mechanics
3. Light and Lenses
4. Other requirements
Projectionist Should Know Electronics
Today's projection room is a
maze of electronic marvels, and the
industry provides more complex
equipment as time goes on. Conse-
( Continued on Page 15)
ORLOVE OFFERS ANTIQUES — Anybody want a collection of early motion
picture projection equipment suitable for display in a cinematic museum? Louis
donate to any museum which will give it careful attention and a proper display.
W. Orlove, veteran film exploiteer now handling 20th Century -Fox campaigns
in the Minneapolis-Milwaukee area, has a number of unique items which he'll
Orlove's hobby began in 1925 when he acquired a Kinedrome projector from the
Old Theatorium in Milwaukee. He has gathered many other interesting items
since but lacks the room to display them. Interested curators can reach Orlove
at 1618 N. 54th St., Milwaukee.
A Rectifier
That Is
Truly Different
BI-POWR
A new type silicon diode stack
transformer rectifier designed
as a power source
FOR THE OPERATION
OF TWO ARC LAMPS
No flicker or other change in projected
light at the time of striking the second
arc.
DUAL OUTPUT RATING OF
60-85/60-85 AMPS/35-45 VOLTS
90-135/90-135 AMPS/56-70 VOLTS
120-160/120-160 AMPS/58-75 VOLTS
•k Designed for operation on 208/
220V 50/60 cycle, three phase A.C.
-k Two independent stack assemblies,
one for each output.
ic "Lo-Strike"* feature associated
with each output protects stacks
from overload and prevents destruc-
tion of carbon crater upon striking
the arc.
•A- Exclusive automatic reset* permits
immediate restriking if arc is not
established the first time.
ic A choke in the D.C. output circuit
makes for quiet operation and holds
ripple to less than 3%.
-k Down-draft fan cooled. No foreign
matter can be drawn into the equip-
ment.
+ Class H glass insulated trans-
formers.
Send for literature.
THE STRONG ELECTRIC CORP.
31 City Pork Avenue
Toledo 1, Ohio
"Not supplied as regular equipment
on 60-85 ampere model.
International Projectionist
January, 1963
FACT IS a crisp, sparkling negative must have top-quality prints. Otherwise, it can't do its job, and
your message falls flat on its face, wasting production time and money— station time, too, if your
film's on TV. Moral: Go Eastman all the way— negative and print-stock. And in the case of ques-
tions—production, processing, projection— always get in touch with Eastman Technical Service.
Nobody
likes
flat
prints
either..
For further information, please write or phone: Motion Picture Film Department,
EASTMAN KODAK COMPANY, Rochester 4, N. Y. Or-for the purchase of film:
W.J. German, Inc. Agents for the sale and distribution of Eastman Professional
Film for Motion Pictures and TV, Fort Lee, N.J., Chicago, III., Hollywood, Calif.
EASTMAN FUL
fl
(Lateral
movement
only
; Costal
QAAon autczL-^
crystal
^sStet^e ogh on i
o^
FIG. 2 — The piezoelectric crystal of a monaural pickup
is "twisted" in only one direction, the lateral direction paral-
lel to the variations of the constant-depth groove. The crystal
thus generates fluctuating sound currents. A stereo pickup
works the same way, but it has two crystals positioned in
planes 90 degrees apart. One crystal responds only to the
variations in one wall of the record groove, and the other
crystal responds only to the variations recorded in the other
wall. Each crystal, accordingly, reproduces one of two
separate channels of sound.
DISC REPRODUCERS
from page 7
average linear groove speed only 42.7% that of 78's.
A slightly worn needle will distort the sound more badly
on 33's than on 78's, while a severely worn needle may
skip grooves, repeat grooves on overmodulated pas-
sages, and damage the record.
Oscilloscopic tests which reveal distortion in high-
frequency waveforms lead us to the conclusion that
standard-groove 78-RPM records are best limited to
8000 cycles, while microgroove 33's cannot go much
beyond 10,000 cycles without distortion.
As a matter of fact, nothing in the way of audible
"realism" is provided by frequencies higher than 10,-
000 cycles, which is more than twice as high-pitched as
the highest note on a piano keyboard. Statements by re-
cording companies (attempting 24,000 cycles) to the
effect that excessively high frequencies add realism
"even though they are not heard" are pure balderdash.
Commercial amplifiers and speakers cannot reproduce
24,000 cycles; and few go up as high as 15,000 cycles.
It has been said that only "bulldogs and babies"
can hear up to 30,000 cycles. The average young adult
12
can probably hear sounds as high as 15,000 cycles, and
in some cases up to 20,000. Sounds higher than 10,000
cycles are scarcely audible to anyone over 60 years of
age.
To a person who can easily hear 10,000 cycles,
this extremely high-pitched tone sounds like a harsh
whistling hiss totally devoid of timbre, or "tone color."
It has no timbre because its harmonic (20,000 cycles,
30,000 cycles, and 40,000 cycles for the first three har-
monics) are too high to be audible, even if really
present. (The first three or four harmonics establish
the general character of any tone — fluty, reedy, dull,
piquant, etc.)
A worn needle used on 33V3-RPM discs will distort
the lower as well as the higher frequencies, and ac-
centuate certain frequencies. Such a needle may skip
grooves and damage the record. Sapphire and ruby
needles have a relatively short life and, in general,
are rather a nuisance with long-play records. Diamond
needles have a useful life of 20 to 100 times the
life of sapphire needles, and should be installed at the
outset. Diamond needles cost only 4 or 5 times as much
as the sapphire ones, and hence represent a real
economy.
Use Only All-Speed Stereo Players!
This writer very strongly recommends the use of a
combination-speed record player (16, 45, S3Ys, and 78
RPM) fitted with a flip-over cartridge, each side of
which has its own needle. One side of the pickup
plays 45 and 33% microgroove records, while the
other side is for standard 78's. Be sure that the micro-
groove side of the cartridge is "stereo" no matter
whether the noiv common stereo discs are reproduced
monaurally or stereophonically!
On account of the musical limitations of 45-RPM
records, and the likelihood that this speed may be dis-
continued in favor of 33's for popular "singles," it
seems best to concentrate exclusively on regular 12-
inch 33%-RPM long-play discs, both high-fidelity mon-
aural and stereophonic.
An ordinary monaural "lateral-cut" record has only
sidewise variations of grooves of constant depth, but a
dual-channel stereophonic record has two completely in-
dependent sets of variations in its grooves. One chan-
nel of sound is carried by lateral variations tilted 45°
from the surface plane of the disc, while the other
set of variations for the second channel is tilted 45° in
the opposite direction. The two sets thus have a maxi-
mum angular separation of 90°.
When the same sound is present in both channels,
the angular difference of the plane of needle movement
from the surface plane of the record is less than 45°,
that is, 45° — n°, in which n is the angle of needle
movement on the side of the groove (right or left
sound channel) having the weaker signal. In the case of
a regular monaural record played with a stereo pickup
( which improves the sound, by the way ) , the sidewise
needle movement in the plane of the record surface is
exactly the same as in a stereo record having identical
signals of equal strength in both channels. (45° — 45°
=0°.) The result is the same sound from the left and
right speakers.
To repeat: Stereophonic records are now so com-
monplace that the record player used in the theatre
should be equipped with a stereo pickup cartridge no
matter whether the sound is played monaurally through
just one channel or stereophonically through two or
three amplifier and speaker channels.
International Projectionist
January, 1963
Voltage
gain
Power tubes
Ton*
Volume
P^d
T~p
rojectionist is responsible for thread-
ing up the film, rewinding, replacing
arc carbons, focussing and framing.
In the smaller theatres with a
screen up to 35 ft. wide, the Xenon
(lamp) arc is now being widely used
with automatic control equipment,
since it lends itself readily to auto-
matic control and obviates the neces-
sity for replacing carbons.
National Safety Laws
Cinemas in the United Kingdom
operate under safety regulations is-
sued by the secretary of state, and in
1958 the regulations were amended
to take account of this automatic
equipment. This permits the equip-
ment to be in use without a projec-
tionist being in the booth — although
his absence is limited to fifteen min-
utes. The reason for this is that a
projectionist must go to the booth
once every fifteen minutes to remove
the film that has been shown and re-
place the next reel.
The regulations require a warning
bell to sound in the projection room
suite and to be in a position where
another member of the staff is norm-
ally employed and can hear it — in
case anything should go wrong with
the automatic control.
There has been no active opposition
to automatic equipment by the labor
union, although where the equipment
is installed there was a tendency to
demand a higher minimum wage.
What happens in practice, however,
is that in theatres that previously em-
ployed a total of four or five pro-
jectionists, there are only two on the
payroll — one on duty at any given
time. These two operators receive a
wage higher than the minimum agre-
ed between the employers and the
union, but the wage is a matter for
negotiation between the employer
and the individual projectionist.
It must be remembered that there
is a rather acute shortage of projec-
tionists in the United Kingdom and
many cinemas are able to keep going
only because automatic equipment
has been installed.
Remote Control System
Automatic equipment with remote
control is installed in about 14 cine-
mas in the United Kingdom and is
operating very satisfactorily. The
automatic side includes the automat-
ic changeover from one machine to
the other and automatic close-down
should anything go wrong with the
light source circuit or the motor
circuit. The remote control consists
of a control board placed in a suit-
able position in the auditorium from
which it is possible to start or stop
either machine, to focus and frame
the picture and to control the volume
of sound. Although at the present
time a projectionist is employed to
operate the remote control, the con-
trol is so simple that an unskilled
person, e.g. an usherette or under-
manager, could run the show.
With this equipment it is, of course,
still necessary to employ a projec-
tionist to change the reels and re-
wind, but experiments are already
being carried out with the possibility
of accommodating the entire pro-
gramme on two machines and to have
automatic rewind. Indeed, we have
a prototype equipment in two cine-
mas in a town in the United Kingdom
where 8000 ft. spools are fitted to
the machines. Since they are special-
ist houses, their programmes never
exceed 16,000 ft. In this particular
instance, we have one operator in
charge of the two cinemas. The re-
mote control is situated at the rear
of the auditorium and is in the charge
of the under-managers."
It is obvious from the above report,
TOA points out, that the equipment
is working satisfactorily, and is giving
English theatres the equivalent of a
one man booth. If the remote control
operation does not evoke severe labor
union reaction, it is also obviously
conceivable that a very limited num-
ber of trained service projectionists
could take care of a large number of
British theatres within a small geo-
graphic area, with unskilled theatre
help watching the individual theatre's
control panel.
It is TOA's understanding that
BRIGHTER LIGHT
LONGER BURNING
SHARPER PICTURE
free Test Samples
mwrnv*
*T?W»«f»»WF»
wnamS^SL(2m6o*t4
CARBONS INC., BOONTON, N. J.
STEADIER LIGHT
LESS ATTENTION
PERFECT COLOR BALANCE
Free Carbon Chart
14
International Projectionist
January, 1963
British laws regarding booth opera-
tion would probably have to be mod-
ified if remote operation is to be-
come widespread. Unlike the U. S.,
Britain has one safety code adminis-
tration that functions nationally.
The reported shortage of union
projectionists in England, coupled
with the distressed state of the Eng-
lish exhibition industry, set the stage
in the United Kingdom for this tech-
nological advance. This would prob-
ably not be the case in the United
States, the association comments.
Differences Highlighted
The British situation is yet another
highlight of the differences between
the British and American theatre in-
dustries. In Britain, as an example,
there are no anti-trust laws similar
to ours. In enforcing their "FIDO"
plan to keep current feature films off
television, British distributors, with
the support of exhibitors, have re-
fused to supply film to a violator,
and the courts have condoned this
boycott. Under the Eddy Plan, Brit-
ish theatres pay a small tax on each
admission, and the funds are used to
subsidize new production. Also, the
British have a mandatory classifica-
tion system. iP
Pine Hollow Theatre
Uses Century Sound
An article in the November issue
of International Projectionist de-
scribed the sound system of the Pine
Hollow Theatre incorrectly. The
Pine Hollow is equipped with the
Century Projector Corp. all-transis-
tor 6-4-1 channel sound system. The
sound equipment was furnished by
Century dealer Joe Hornstein, Inc.,
and installed by engineer Joe Kelley
of the Skouras circuit. iP
Reevesound Company
Retains Barbara Skeeter
NEW YORK— Reevesound Com-
pany, Inc., Long Island City motion
picture engineering firm, announced
it has retained New York consulting
publicist Barbara Skeeter to expand
its information program.
Reevesound designs specialized
sound and visual communications
systems for governments and indus-
trial firms.
A former director of public rela-
tions for the Society of Motion Pic-
ture and Television Engineers, Miss
Skeeter has a broad background in
corporate and association publicity
and newspaper work. iP
International Projectionist
PROFICIENCY
from page 9
quently, the person manning this
equipment should have as much
knowledge as possible about the
projection room. For example, a
knowledge of the electronic funda-
mentals connected with sound be-
comes increasingly important be-
cause the patrons, with their own
Hi-fis at home, require high stan-
dards in sound reproduction. The
added complexity of the four-and six-
track stereophonic systems is a real
challenge to the theatre projectionist.
Although the sound service engineer
maintains this system in many
theatres, he cannot be present at
all theatres all of the time; there-
fore, a major responsibility rests
with the projectionist for keeping
the system in good condition.
It is the good projectionist who
possesses enough knowledge about
his sound system that he can make
emergency repairs when necessary.
The patron becomes disgruntled if
a sound outage occurs and he must
wait until a sound service engineer
comes from across town to repair it.
Though it is the most complicated
part of the projection room equip-
ment, the sound system does not
constitute the only electronic ap-
paratus. The various motors, the
arc lamps, the motor-generators and
the rectifiers must also function
properly so that the show goes on the
screen in a pleasing manner. In this
area, the projectionist has a greater
responsibility than in servicing sound
systems because he must institute the
maintenance procedures. Therefore,
a thorough knowledge of the elec-
tronic fundamentals involved is a
prerequisite of proper servicing. As
the equipment, such as the arc lamp,
becomes increasingly simple to oper-
ate, its construction becomes more
complicated. Consequently, an in-
creasing knowledge of electronics
and theories explaining the opera-
tion of these systems is another rea-
son why this subject represents a
basic requirement for all projection-
ists.
Mechanics Should be Mastered
The motion picture projector is
not only an electronic marvel, but
it is also one of the most intricate
machines in today's world of auto-
mation.
Again, the burden for adequate
maintenance and servicing rests with
the person in the projection room;
it is only natural, therefore, that
this man acquire a knowledge of
mechanics so that he can adequately
perform the duties required of him.
Unless the basic mechanical func-
January 1963
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LOU WALTERS
Projector Repair Service
(All makes projectors & movements
repaired)
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Norelco
projection
equipment
Available from
leading theatre supply
dealers
North American Philips Co., Inc.
Motion Picture Equipment Division
100 E. 42nd St., New York 17, N.Y.
PROJECTIONISTS
PREFER
ETHYLOID
Film Cement- For
BEST RESULTS
Available from
Supply dealers
FISHER MFG. CO.
1185 Mr. Read Blvd.
Rochester, N.Y.
15
lions of the projector become a part
of his knowledge, he will have diffi-
culty maintaining equipment.
For example, a knowledge of how
the star-wheel intermittent operates
precludes its servicing as directed for
a specific brand of projector. With
an understanding of the mechanical
essentials, the projectionist can then
make the necessary repairs and ad-
justments to his particular installa-
tion.
Light and Lenses Must be Understood
The third basic requirement for
the well-equipped projectionist is an
understanding of the principles of
CURTAIN CONTROLS,
TRACKS and SPECIAL
OPERATING DEVICES
VALLEN, Inc.
AKRON 4, OHIO
optics. This requirement is impor-
tant because of the ever-changing
methods of presentation and the
problems introduced by the drive-in
theatre. With more and more thea-
tres installing 70 mm. equipment is
is the projectionist's responsibility to
make sure that the effect of the pre-
sentation meets the requirements de-
manded by the public.
For instance in a large downtown
theatre, the new 70 mm. equipment
was installed haphazardly and it was
several days before the performance
met already established standards.
Although this may be a rare case,
the man in charge of running the
show should do his best to prevent
such occurrences. Even though such
practices are not the fault of the pro-
jectionist, a man with a thorough
knowledge of optics is valuable when
new theatres go up or when estab-
lished theatres are remodeled.
Before concluding these three sec-
tions here is a brief summary. In
order to do his job adequately, the
theatre projectionist needs an under-
standing of ( 1 ) basic electronics,
(2) basic mechanics, and (3) basic
optics. A problem arises as to how
one can properly gain this knowl-
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based on life expectancy. So, since your old reflectors, by wasting power,
carbons, and light, cost more than new TUFCOLDS, replace them now.
THE STRONG ELECTRIC CORPORATION
31 City Park Avenue • Toledo 1, Ohio
edge. Experience is particularly need-
ed for mechanics, but the theories of
light and electronics require outside
study. If possible, an engineering
program at one of the leading uni-
versities would be beneficial, but
since many projectionists cannot
undertake such a program, there are
other methods of learning this mater-
ial. For example, there are many
specialized electronic schools
throughout the country, and corres-
pondence courses also present a
method of gaining necessary knowl-
edge.
Positive Altitudes Are Necessary
This section includes the most im-
portant data in the report. In order
to perform properly the skills men-
tioned, the three kinds of knowledge
just discussed play an important role.
One authority defined a projectionist
who had these skills as a "presenta-
tion man." The term describes the
actual running of the show as op-
posed to maintaining the equipment.
It is in mechanics that experience
proves most helpful, but just because
a man has many years experience, he
does not necessarily become an ex-
pert "presentation man." There are
other factors entering into the quali-
fication.
First, and one of the most impor-
tant, is attitude toward the job. Be-
cause many of the duties performed
daily become more or less routine
after they are learned, the man run-
ning the projectors may develop a
complacent feeling toward the work,
and an inferior product sometimes
results. With the new arch lamp
and projectors that the present thea-
tres use, the hazard of this attitude
increases because one can get by
with less supervision than before.
The projectionist ought to feel that
he is as much an artist as the stars
on the screen, for without him their
acting ability is lost; consequently,
constant awareness of his important
function to the entertainment indus-
try is necessary, for every man re-
gardless of the size of the theatre in
which he works. With the proper
attitude toward the profession, the
normal daily duties contribute to
job satisfaction and pride in the
work.
Checking is a Key Word
The second requirement of a good
presentation involves a key word in
every projectionist's vocabulary —
checking. Unfortunately, since people
all make mistakes and projectionists
are human, a good presentation de-
mands constant checking of the var-
ious functions performed. On many
jobs, a small mistake goes unnoticed
and does little real harm, but even
16
International Projectionist
January 1963
the smallest mistakes in the pro-
jection room erupt upon the screen
in view of hundreds of patrons. In
order to eliminate these occurrences,
the projectionist ought to check and
re-check his work. Certain key
points such as the proper lens and
aperture plate, proper reel, proper
threading, proper carbon trim, and
others require constant supervision
because without a program of double
checking the show may suffer.
Another item that demands in-
spection and checking is the opera-
tion of the equipment. This is the
section of the program that makes it
necessary for the projectionists to
have the specialized knowledge dis-
cussed in the first three sections, for
without it the projectionist may find
it difficult to adopt an effective pre-
ventive maintenance program for his
machinery.
Film Inspection Must Take Place First
The last major topic considered
in this section pertains to film in-
spection. A few brief remarks on
this subject will suffice. First, if
a projectionist wants a perfect show
at all times, he must inspect all film
before its showing. However, in
many cases conditions may prevent
the proper inspection. If this is the
case, one must do the best possible
job under the handicap. The time
allowed for such inspection remains
a controversial subject and until
the question can be effectively solved
the present unfortunate conditions
must be tolerated. Again the factor
of experience plays an important role
in deciding the individual case.
But the projectionist should keep
in mind that his primary job is to
run the film and maintain his equip-
ment, and the film should arrive at
the theatre in good condition; there-
fore, if film inspection interferes
with the primary obligation of the
person running the show, the inspec-
tion of film ought to remain secon-
dary on the agenda of duties.
Summary and Conclusions
Most of the material presented
here is a part of every good pro-
jectionist's background but it is ad-
vantageous to review basic concepts
and goals periodically so that pri-
mary objectives gain predominance
in setting goals. This report says
that in order to adequately perform
the duties required of him, the the-
atre projectionist should possess a
background in (1) electronics, (2)
mechanics, and (3) optics. It is with
this background, plus the specialized
skills necessary, that this magician
of the theatre can present a flawless
show.
Sometimes overlooked, but equally
important as his knowledge, is his
International Projectionist
attitude toward his profession. The
projectionist is an artist who uses
machines to paint pictures, and he
can gain satisfaction from a "can-
vas" well done. The projection
equipment resembles the surgical in-
struments in the operating room of a
hospital, for unless the person per-
forming the operation uses highly
skilled techniques, the job is a
failure. Therefore, when the pro-
jectionist fails to present a flawless
canvas of picture and sound, his
patient dies. The patrons of the
theatre go home to watch television.
iP
PROJECTOR
CARBONS
Better
Light!
Lower
Costs!
RINGSDORFF CARBON CORP, East MrKensport. Pa.
How electrical noise is produced . . .
calculated • . . measured , . . controlled
Here are the basic facts about electrical noise — how it originates
in circuits . . . what terms describe it . . . how to measure it . . .
how to design circuits to minimize its undesirable effects. The
physical nature of the various sources of noise are clearly de-
scribed, including such sources as thermal agitation or resistance
noise . . . shot noise in vacuum tubes and semiconductor junctions
. . . noise from spontaneous emission of electromagnetic radiation
. . . and noise in gas discharges. This practical book also explains
auxiliary mathematical techniques, and discusses the relation of
signal and noise in various types of communication systems. For
ease in use, the simple tuned circuit associated with a device for
measuring average power is made the basic tool for analyzing
ELECTRICAL
270 pages, 6x9
105 illustrations
$10.00
By WILLIAM R. BENNETT
Data Communications Consultant, Bell Telephone Laboratories, Inc.
Each chapter in this helpful book begins in
a simple, practical manner and works toward
more complicated examples. For example, prop-
erties of thermal noise and its relation to black-
body radiation are deduced from basic laws
of thermodynamics and statistical mechanics.
You also will find a clear treatment of elemen-
tary quantum mechanics in discussions of the
maser and of noise in semiconductors. And, in
describing noise properties of various devices,
the book fills in your working background with
basic facts on junction diodes — transistors —
gas discharge tubes— klystrons— traveling wave
amplifiers— and others. Both independent and
dependent noise sources are analyzed.
In addition to the standard theory of noise
figure and its significance, a treatment is given
of the more comprehensive Haus-Adler theory
of noise measure. Throughout, the book stresses
the universality of noise-like phenomena. Noise
formulas for diodes and transistors; noise gen-
eration to meet specifications; design of ampli-
fiers for minimum noise effects— these and many
other topics 'are covered. A comprehensive re-
view of noise in the various methods of signal
transmission such as amplitude modulation . . .
frequency modulation . . . and the different
lands of pulse modulation is included.
January 1963
CONTENTS
1. General Properties of Noise
2. Thermal Noise
3. Distribution of Magnitudes in Noise Sources
4. Noise in Vacuum Tubes
5. Noise in Semiconductors
6. Noise in Electromagnetic Radiation
7. Noise-generating Equipment
8. Noise Measurements and Techniques
9. Design of Low-noise Equipment
10. Application of Fourier Analysis to Noise
Problems
11. Noise in Communication Systems
' 1
INTERNATIONAL PROJECTIONIST
Post Office Box 6174
Minneapolis 24, Minnesota
Please send me a copy of "Electrical Noise"
by William R. Bennett. (I enclose $10.00.)
Name
Address
City & State
17
IMPROVING THEATERS
theater is a matter of the utmost
impo.rtance. If members of the
audience have a pleasant recollection
of their hours in the theater, they
will frequently return and become
regular customers. If they are re-
pelled by unpleasant surroundings,
sooner or later they will be perman-
ently lost. Some become bitter critics.
Whispering campaigns are either the
best or the worst advertising.
For this and other reasons, the
theater lighting should be most care-
fully adjusted in each part of the
theater. The street lighting of the
theater is, of course, for conspicu-
ous display purposes. The lobby
lighting should be much softer, and
graded downward so that entering
the auditorium does not find the eye
blinded by previous excessive illu-
mination. Colored lighting (amber
or rose, for example) is often help-
ful. And the lighting in the main
portions of the house must be care-
fully adjusted so that vacant seats
can be readily found and yet the
general lighting level is low. Above
all, house lights should never illumi-
nate the screen.
It goes without saying that the
utmost cleanliness and attractive-
ness in lounges, rest rooms, and lavo-
ratories is essential. Few things are
less attractive to the audience than
shabby or unpleasant rest portions
of the house.
In this general connection, it is
essential that odors of rancid but-
ter or peanut oil shall be completely
banished from the house and its
refreshment portions. Sufficiently
powerful ventilation and exhaust
fans will greatly help. Many of the
theater owners have found that the
audience cultivates theaters which
are free from stale odors.
Courteous Treatment important
The operation of a theater is not
a mere perfunctory matter, largely
to be neglected as a routine propo-
sition. Life in the theater should be
a model of courteous treatment by
ushers and management. Any re-
quests for information or complaints
should be very promptly handled
and clearly answered with a real
show of interest and sympathy on
the part of the management. And the
ushers and managers should not be
remote and inaccessible people but
should be continually on the look-
out for any questions, complaints,
disturbances, or events requiring at-
tention. One of the great assets of
the theater is the existence of dis-
18
from page 5
cipline and control of the audience
which ensures uninterrupted enjoy-
ment of the performance. In the
home there are often enough in-
evitable interruptions of any enter-
tainment. But in the theater such un-
necessary interruptions are often in-
tolerable and repel the audience.
Of course, the main commodity
which is sold in the theater is the
program. Too much time can hardly
be spent selecting and arranging the
program, choosing times for the
showings, and generally building up
an attractive performance. A good
showman will study the audience in
his vicinity and learn their prefer-
ences. After a few months, he will
know that in the vicinity of his
theater, people prefer romantic
shows, costume dramas, comedy,
vivid action films, so-called "art"
pictures, or other forms of enter-
tainment. The successful exhibitor
will learn of these preferences and
will build up his programs, wherever
possible, around a suitable selection
and succession of attractive show-
ings. It is a good idea to have dif-
ferent types of films at the same
performance. It is also often worth
while shifting the major emphasis
in performances from each show to
the ones on the following weeks.
The skilled showman will make
good use of the advantages of color
films which have now been devel-
oped to the point of exquisite beauty
and dramatic value. Experience has
shown that color can set a mood in
a fashion almost impossible for black
and white. Accordingly, the balanced
theater program will have a full
quota of color films wherever pos-
sible.
Exhibitor Should have Good P.R.
And finally, the exhibitor must
establish the closest possible rela-
tionships with his community and
its members. He should be the "best-
liked man in town." This may take
some time and trouble on his part.
But anything he does with and for
the community is well rewarded. In
addition to studying the customer's
preferences and establishing excel-
lent public relations with the com-
munity, the exhibitor should discover
whether his prospective audience re-
spond better to hard-selling or to
soft-selling in advertising. Of course
the type of advertising may depend
to some extent on the type of pic-
ture that is shown each week.
If the exhibitor establishes cordial
contacts with the schools, clubs, as-
sociations, and churches of his town
— as well as with the civic leaders of
the community — his prospects of
success will be considerably bright-
ened. It takes an extremely compe-
tent, pleasant, diplomatic, and cap-
able man to be a truly successful
showman. iP
London News
and Views
By Stanley T. Perry
The Odeon Theatre in Leicester
Square which is the Rank Organiza-
tion's key house had a "face lift" in
its projection booth just prior to a
Royal Film Performance.
The Odeon, which needed a change
of equipment, installed three Cine-
maccanica Victoria X, a multi pur-
pose 70/35mm projector, with elec-
trical interlock between any pair.
Also installed were three Super
Zenith 460 arc lamps with 18 picroid
reflectors, operating at 110 amps.,
with a corbon trim of 10 mm posi-
tive, 9 mm negative, both copper
coated. The positive is non-rotating
and the carbon contacts and the lamp
are generally air-cooled, although
water circulation is now being used,
except for the projector film gate.
A new G. B. Kalee Duosonic-
Multichannel sound equipment for all
film systems, including unmarried
prints was included. Also installed
was a 12- way sound reinforcement
system and remote control focusing,
framing, sound volume from the
auditorium.
Prior to the installation of the
projection equipment, Mick Mc-
Laughlin, chief projectionist at the
Odeon, and Bob Pulman, projection
engineer of the circuit, were guests
of the Cinemaccania Company in
Milan, Italy, where they spent some
days at the factory familiarizing
themselves with the equipment.
The "late night show" policy
which has been in operation for
some time in the West End, is now
spreading to the suburbs. The Clas-
sic Circuit, which runs a number of
small repertory theatres, have started
the late night shows at Chelsea and
Notting Hill, and no doubt there
will be more of these in the future.
The nine small houses in the West
End late night shows have now
firmly established themselves. Some
show the current feature and shorts.
Others have a special program for
the late show only. iP
International Projectionist
January 1963
» AUTHORITATIVE
» COMPREHENSIVE
» PRACTICAL
Acclaimed by leading technicians in
the industry as the most comprehen-
sive and down-to-earth handbook pub-
lished to date on the subject of motion
picture projection. Ideally suited for
study and reference by your opera-
tors.
ROBERT A. MITCHELL'S
MANUAL OF PRACTICAL PROJECTION
HANDY 5"/2" X 8|/2" SIZE
450 PAGES
ILLUSTRATED — CROSS INDEXED FOR EASY REFERENCE
A Here is one of the most help-
ful works ever published for
the motion picture projection-
ist. A handsomely bound and
profusely illustrated compila-
tion of the BEST of the Robert
A. Mitchell articles that have
appeared in "International
Projectionis t," revised,
brought up to date.
!
ic The author covers clearly
and thoroughly every aspect of
motion picture projection, pre-
senting his material in easily
understood language — not too
technical, yet technically ac-
curate. The Manual is divided
in 8 sections and contains 30
chapters — a valuable refer-
ence work no progressive pro-
jectionist should be without.
SECTION HEADINGS
(1) Film; (2) The Projector; (3) Projection-Optics, Screens; (4) The Arc Lamp;
(5) General Projection Practice; (6) Motors, Generators, and Rectifiers; (7)
Sound Reproduction Systems; (8) Projection of Color and 3-D Films, Formulas.
ORDER YOUR COPY TODAY * USE THIS HANDY FORM
INTERNATIONAL PROJECTIONIST
Post Office Box 6174
Minneapolis 24, Minnesota
Gentlemen: please send me copy (copies of ROBERT A. MITCHELL'S MANUAL OF
PRACTICAL PROJECTION. Enclosed is my check (or money-order) for $
NAME
ADDRESS
$6.00
per copy
including postage
CITY
ZONE STATE
International Projectionist
January 1963
19
.,4 Scene From America's Projector Carbon Center.,
Lamp for simulating operating conditions
" With this unique lamp we keep millions of
moviegoers happy with your screen lighting"
A ^^
To the best of our knowledge
there are only two of these
lamps in existence— and both
are located in our Fostoria,
Ohio, plant. This remarkable
lamp is vital to quality screen George Mayer
lighting because it enables our development de-
partment to simulate any operating conditions
encountered by projectionists.
For example, we can alter the negative car-
bon angle from 0 to 90°, with respect to the
positive carbon axis. The lamp will take any
size negative, either copper -coated or black.
Jaws are available to burn either copper-coated
-says GEORGE MAYER
National Carbon Sales Engineer
or black positive carbons. Rotational speeds
range from 0 to 20 rpm, and feed rate can be
varied from 1 to 120 inches per hour. Power
variations range from 5 to 300 amps under
normal conditions. Up to 800 amps have been
carried for short periods of time.
Such advanced research equipment, quality
production, and precision testing are only a
part of the "National" projector carbon story.
Since 1917, National Carbon has set the pace
for outstanding technical service . . . through
Sales Engineers equipped with today's most
modern test devices for assuring optimum
lighting efficiency.
Contact
Mr. National Carbon
UNION
CARBIDE
"National" and "Union Carbide" are registered trade-marks for products of
NATIONAL CARBON COMPANY
Division of Union Carbide Corporation • 270 Park Avenue • New York 17, N. Y.
In Canada: Union Carbide Canada Limited, Toronto
as
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FEBRUARY
VOLUME 38
1963
NUMBER 2
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A Scene From America's Projector Carbon Center.
Testing for arc consumption and light distribution
"Every day is 'double -feature' test day at
our projection booth in Fostoria, Ohio"
****** «
Bill Brenner
You're looking into the motion
picture industry's most unusual
projection booth. We run the
same "double-feature" every
day —fifty- two weeks a year. Our
program covers two important
phases of "National" projector carbon produc-
tion — the testing of arc consumption and light
distribution. Their ultimate results are to help
you obtain the finest picture quality!
Tests are conducted on representative sam-
ples from every lot of projector carbons manu-
factured in Fostoria, Ohio. This specialized
says BILL BRENNER
National Carbon Sales Engineer
quality control effort not only pays dividends
to the theatre owner in projection carbon econ-
omy, but assures movie patrons the best-lighted
indoor or outdoor presentations that carbon
dollars can buy !
Quality manufacturing and precision testing
are only a part of the "National" projector car-
bon story. For 45 years National Carbon has
backed theatre owners with the industry's most
dependable technical service.
Our Sales Engineers are equipped with to-
day's most modern test devices ... to assure you
maximum light efficiency on your screen.
Contact
Mr. National Carbon
UNION
CARBIDE
"National" and "Union Carbide" are registered trade-marks for products of
NATIONAL CARBON COMPANY
Division of Union Carbide Corporation • 270 Park Avenue • New York 17, N. Y.
In Canada: Union Carbide Canada Limited, Toronto
INTERNATIONAL
PROJECTIONIST
Including a special Audio-Visual section relat-
ing to the operation and maintenance of A-V
equipment in the educational and industrial
fields.
Volume 38 February, 1963 No. 2
FRANK W. COOLEY, JR.
Editor and Publisher
RAY GALLO
Executive Publisher
AL BLOOM
Managing Editor
TOM KENNEDY
Equipment Editor
RAY GALLO ASSOCIATES
National Advertising Representatives
545 Fifth Avenue, New York 17, N. Y.
Telephone Murrayhill 7-7746
(Area Code 203)
IN THIS ISSUE
Part II A
Organ Recordings for the Theatre
By ROBERT A. MITCHELL
Projectionist Profile: Ernest Lang
TESMA Board Named l2
New Century Projector Series 10
Norelco, Ballantyne Agreement 1 1
News Notes — Technical Hints — Miscellaneous Notes
INTERNATIONAL PROJECTIONIST, published monthly by the
International Projectionist Publishing Co division ot The
Northern Publishing Co., Post Office Box 6174, Minneapolis
24 Minnesota. Editorial offices, 1645 Hennepin Avenue,
Minneapolis 3, Minn. Subscription Representatives: AUS-
TRALIA—McGills, 183 Elizabeth St., Melbourne; NEW
ZEALAND — Wixon's, Ltd., 64 Courtnay Place, Wellington;
ENGLAND and ELSEWHERE — Wm. Dawson & Sons Ltd.,
Macklin St., London, W. C. 2. Subscription Rates: United States,
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per year and $7.00 for two years. Changes of address should
be submitted four weeks in advance of publication date to
insure receipt of current issue. Second-class postage paid at
Minneapolis, Minn. INTERNATIONAL PROJECTIONIST as-
sumes no responsibility for personal opinions appearing in
sianed articles, or for unsolicited articles. Entire contents
copyrighted 1963 by INTERNATIONAL PROJECTIONIST
PUBLISHING CO.
1
MONTHLY CHAT
»*VVVVV»V**VV*VVV»*»»»»*»VVVVVVV»»*»iV»VV*V*V»VVVV*VVV<
Better Days for Craftsmen Ahead?
1963 may be a year of good theatre business and a
turning point for projectionists who were affected by
theatre closings and discouraged by working with worn-
out equipment. Film men who have traveled around the
country talk about a possible revival of theatre owners'
plans to build new theatres and refurnish older houses,
including new booth equipment.
During the "golden age" of movies, 1920 to 1929, the
theatre owners that prospered recognized that boothmen
held a big responsibility in the proper presentation of
the motion pictures. These owners encouraged constant
improvement in projection equipment and used innova-
tions and new developments for high quality screen
shows as they came along.
Different From the Past
In the past decade the exhibitor wanted attractions to
wow his audience from the film producer-distributor. But
there are signs that the exhibitor realizes he must depend
upon himslef for high standards of screen presentation,
including good housekeeping to induce the public to
attend his theatre more often.
If that happens — as eventually it must — the projec-
tionist will enjoy his old status as a key man of the
theatre, responsible for keeping the equipment in shape
and putting a good show on the screen.
During the "Golden age" of movies there were added
attractions, such as organ solos and live stage presenta-
tion. Now more than ever the film house relies on the
motion picture to attract patronage. The boothman is
the key man in the theatre because the public has learned
to expect good projection and sound from showcase
houses featuring 70mm and stereo sound.
New Equipment Increases Prosperity
If theatre owners spend money on new projection
equipment and remodeling older theatres, they can
advertise that they have superior projection, comfortable
seats and attractive surroundings, and that they provide
courteous service for patrons. This can help make their
theatre an institution of the city — after all, that was how
prosperous showmen made money in the 1920's, in addi-
tion to exploiting the current and forthcoming attractions.
Consequently, the exhibitor, realizing a good, efficient
craftsman in his booth means a lot to his box-office
business, will have more regard for his projectionists.
Veteran projectionists will remember P. A. MacGuire,
who served as public relations man for International
Projector Corp. for many years, and was a drum-beater
for the cause of better projection. In his advertisements
for the Powers and Simplex projectors he used the head-
line "Better Projection Pays," and he also preached the
slogan in speeches to exhibitors. Not only did MacGuire
promote his company's projector, but he made the exhibi-
tor realize that there was more profit in better projection,
and he caused the projectionist to take pride in his craft.
Time for Action
IP thinks the time has come for a similar slogan to
be taken up by equipment makers, local unions, the pro-
jectionists' social clubs and the individual projectionist.
After all, the modern projectionist is a technician, a
well-read and skilled machinist; he has to be an engineer
to handle the complex projection and sound equipment
(Continued on Page 14)
International Projectionist February, 1963
■ - — - - : " ■■mtmmaBaamMMMm
INTERNATIONAL PROJECTIONIST
Volume 38
February, 1963
Number 2
Part II
Organ Recordings For The Theatre
By ROBERT A. MITCHELL
The alliance between the mo-
tion-picture theatre and the orches-
tral pipe organ seems indissoluble in
spite of the fact that silent movies
faded into history more than 30
years ago.
The tonal eloquence of the organ
is no longer needed to support the
action on the screen or to intensify
its drama. Why, then, the continued
association of the pipe organ with
motion pictures and the theatres in
which they are shown?
There is no doubt that the richly
varied voices of the theatre organ
exerted a tremendous impact upon
moviegoers in the days when the
audible "voice" of the screen was not
speech, but dramatically keyed mu-
sic. The "silents" were never really
silent, at all!
The silent film, with its character-
istic techniques of photography, act-
ing, and continuity ( with sparing use
of dialogue subtitles ) , was an art in
its own right, and one which attained
a high degree of development before
its demise. The silents were an ex-
travagantly emotional form of visual
story-telling enhanced, ordinarily, by
an equally emotional form of musi-
cal scoring. (Many of our best-loved
"pop" melodies, now classics, were
composed for silent pictures, e.g.
"Diane" written for the 1927 film
"Seventh Heaven" with Charlie Far-
rell and Janet Gaynor.)
Even modern moviemakers of long
experience must admit that the glam-
orous dream-stuff of the silent
motion picture possessed a strange
power to play upon the feelings of
the audience to a degree seldom
4
achieved by the stage-borrowed ec-
lecticism of the talking picture. This,
in brief, is the background of cinema
history which solidly established the
pipe organ — or, at least, fond mem-
ories of the pipe organ — in the mo-
tion-picture theatre.
The silent photoplay will never re-
turn, despite its fluidity, its beauty,
and its music. Tastes have changed.
Modern movies must reflect every-
day realities and communicate ideas
to the mind as well as feelings to the
heart. The exaggerated melodrama-
tics usual in silent pictures would
only be laughed at if presented today
in the rose-tinted elegance of a by-
gone era. But the organ, musical
voice of cinematic never-never lands
of yesteryear, persists even when its
magic is transmitted through the me-
dium of "canned sound."
Use All Types of Music
Although this article is specifically
devoted to the music of the theatre
organ, it should not be supposed that
we advocate the use of organ re-
cordings to the total exclusion of
other kinds. Nothing could be farther
from the truth. Different types of
movie programs require widely dif-
ferent types of overture and inter-
mission music to establish the moods
appropriate to them, or at least to
avoid monotony or musical incon-
gruity.
In general, therefore, the projec-
tionist should exercise a high degree
of musical judgment. An "atmospher-
ic" or intensely dramatic film should
be prefaced by concert-type mood
music, not by twist music or ballads
which are more appropriate to light
International
oomedy-dramas or genre plays of con-
temporary theme. Similarly, western-
type music goes best on days when a
western picture is playing, and is in-
apropos with sea pictures, crime or
mystery films, etc.
A particularly happy combination
of overture music and the current
screen attraction is furnished when
the actual theme music of the picture
is available on a disc. This is rarely
possible with commercial records un-
less the picture is a second-run book-
ing. (It's a mystery to us why the
film companies, themselves, do not
supply movie theme music on records
for use in the theatre with their pic-
tures. This would be especially de-
sirable with musicals and dramatic
pictures having notable incidental
music.)
Vocal numbers are not the best
choice for interval music. Intermis-
sion music is intended only as a back-
ground, not as a major performance
requiring the full attention of the
audience for its appreciation. So no
matter how popular or desirable cer-
tain vocal numbers may be in the
home or in juke boxes, they may
prove distracting in the theatre at
times when patrons either chat with
friends or relax to a pleasing musical
background without being forced to
concentrate on the lyrics of a song.
These suggestions appear to apply
to the great majority of theatres, no
matter whether the interval music for
any specific performance is played
on an organ or by an orchestra, or
features a solo instrument such as the
violin, clarinet, piano, trumpet, or
some other. Even rock V roll and
twist music is not ruled out for pic-
Projectionist February, 1963
tures catering to adolescent audiences,
but the antipathy of most adults to-
ward this kind of music must be taken
into consideration.
We recall a theatre that used the
jazziest, most toe-tapping kind of
barrelhouse piano music imaginable
when "The World of Harold Lloyd"
was playing. The effect was mar-
velous, and perfectly keyed to the
rapid-fire pace of silent slapstick.
(A perfect example of nickelodeon
jazz highly recommended with silent
comedy re-releases is Forum Hi-Fi
33%-RPM record no. F-9002, "Bar-
relhouse with Moe Wechsler.")
This same theatre concentrates on
theatre-organ music most of the time
with good effect; and we are happy
to add that all the recorded music
used in that theatre is selected by
the projectionists.
Theatre Organ for the Theatre
Organ music is peculiarly suited to
the motion-picture theatre because
of the amazing tonal range, versa-
tility, and mood-evoking power of
the orchestral pipe organ. Only the
organ can whimper and coo with
sentimental intimacy one moment,
then blare forth with all the thunder-
ing, trumpeting majesty of a brass
band the next. The Mighty Wurlitzer
is the instrument of a thousand
voices; and of all the instruments
devised by man, it is the one that
trulv glorifies music.
Moviegoers greatly enjoy watching
an organist performing at the con-
sole of a giant pipe organ. But "live"
organ music during intermissions is
a rarity today, inasmuch as most
theatre managements are unwilling
to hire an organist when phonograph
records are so readily available at
little cost. As a result, thousands of
fine theatre organs have been neg-
lected or dismantled; and few of the
theatres built since 1930 ever had
pipe organs in the first place.
Only a handful of the largest and
most famous motion-picture theatres,
such as the Radio City Music Hall in
New York, still spotlight the Mighty
Wurlitzer as an added attraction —
a real treat for moviegoers who
cherish memories of the silents, and
a delightful novelty for those whose
memory does not go back so far.
What is the physical structure of a
giant movie organ capable of sur-
passing a symphony orchestra in
tonal variety and sheer audio power?
How does the "king of instruments"
imitate sound effects ranging from
a whispering breeze and the hoof-
beats of a horse to the roar of a
speeding locomotive and the crashing
of thunder? How is all this audio
mimicry combined with every con-
International Projectionist February, 1963
ceivable musical effect from the
plaintive sobbing of a distant flute
to the brassy fortissimo of a military
band? — and all through the artistry
of a single musician seated at a con-
sole which includes a bewildering
array of keyboards, pedals, and
"stop" tablets? The answer is simply
that an organ is many instruments
combined.
No sound is emitted from the con-
sole of an organ. The console is
fundamentally a complex switch-
board. Even the keys of the key-
boards are switches which operate
electromagnets and pneumatic valves
in the distant organ chambers con-
taining, in addition to thousands of
pipes, such percussive attachments
as xylophones, chimes, celestes,
drums, and pianos.
Theatre organs are classified in
various ways as, for example, the
number of kinds, or "ranks," of
pipes and the number of keyboards,
or "manuals," in the console. In ad-
dition to the manually played key-
boards, every organ has a pedal key-
board played with the left foot. The
pedals supply the deep, resonant bass
notes which accent the rhythm of the
music. The organist's right foot works
the "swell pedal" which regulates
the volume of the sound. Since
organ pipes "speak" under constant
wind pressure to maintain true pitch,
the swell pedal actually only oper-
ates a series of shutters which open
up or close off the chambers in which
the pipes are housed. There may be
several swell pedals for different
parts of the organ, and there are
"effect pedals" for cymbals, drums,
traps, gongs, etc.
Complexity of a Theatre Organ
Above the keyboards of an organ
are rows of tabs called "stops."
These are marked with the names of
various solo instruments and dis-
tinctive organ voices. One may be
labelled "violin," another "French
horn." another "melodia," another
"dulciana." and so on. Also indicated
on the tabs is the musical pitch of
each stop on the basis of 8 feet for
the open diaposon pipe sounding the
lowest note of the keyboard in "uni-
son pitch" — the pitch of a particular
"C" when the pipe is sounded by
pressing the lowest key.
Ranks of pipes pitched an octave
lower than unison are designated 16
feet, those an octave higher than
unison. 4 feet, an octave higher than
this. 2 feet. In addition, there may be
5 1 /3. 3 1/5. 2 2/3, 1 1/5, and 1 1/3
foot stops that sound various G's
and E's when a C is pressed on the
keyboard. These modify the tone
by adding new harmonics to the
sound. The warm and vibrant tibia
quint, for example, sounds both C
and the G next above at the same
time! The organist can couple to-
gether as many tones and pitches
as he desires in order to obtain
distinctive "registrations." Hun-
dreds upon hundreds of registra-
tions are possible on a large organ.
An organ contains thousands of
pipes, the largest ones 16 or 32 feet
in length and the smallest ones no
larger than penny whistles. Indeed,
an organ is fundamentally a colossal
agglomeration of horns and whistles
together with bells, chimes, harps,
vibraphones, pianos, bass drums,
snare drums, cymbals, gongs, Chi-
nese blocks, castanets, etc. Each of
these is controlled by a stop tab or
effect pedal in the console. The organ
is thus a veritable one-man band
which can be made to sound like
almost anything imaginable, and is
capable of effects no other instru-
ment can give.
All of the pipes and percussives of
a theatre organ are housed in large
rooms, called organ chambers,
which open into the auditorium
through the volume - controlling
"swell shutters" behind ornate grilles.
The audience, accordingly, never
sees the organ, itself, but only the
organ-controlling console which the
organist manipulates.
All of the pipes of a theatre organ
are behind swell shutters, but a
classical organ has rows of large
diapason pipes exposed to view.
These cannot be controlled as to
the volume with which thev are
beard, and are generally played from
the lowest keyboard of the console,
called the "great organ." The second
kevboard of a church organ plavs the
enclosed pipes, and is called the
"swell organ" because its loudness
may be controlled with the swell
pedal. This old terminology is re-
tained in theatre organs even though
any stop may usually be plaved
through any keyboard. When there
are four manuals, the third is called
the "solo organ," and the fourth,
the "echo organ."
Tbe theatre organ is characterized
by the distinctive instrumental tone
dualities of its stops. Many of its
pipes are much too piquant in tone
for anv other kind of organ. Then,
too. a church organ is usually played
with unmodulated wind pressure,
which results in a steady, rather
monotonous tone. The theatre organ
is nearly alwavs "tremulated" by
means of a vibrato control. This
varies the wind pressure in a gentle
3 cycles-per-second rhythm. The rich
expressiveness of tone provided by
the vibrato contrasts amazingly with
the heavy, dull monotone of the
classical organ.
The wind pressure needed to make
an organ pipe speak is not very
great. But in order to provide ade-
quate pressure in all the wind chests
at all times, permitting the full
organ to be played, a large motor-
driven blower is required. This is
usually located in the cellar of the
theatre, the wind being conducted
into the wind chests of the organ by
air-tight conduits.
Variety of Organ Pipes
A glance into an organ chamber
will disclose rows upon rows of pipes
in great variety. Some look like con-
ventional diapason pipes, others are
gently tapered, some look like trum-
pets, while still others are square
wooden pipes. Each row is evenly
graduated in the length of its pipes
from the tallest giants down to the
tiniest ones the size of lead pencils.
Tin is the preferred material for
pipes of the "string" class — the
violin, viol d'amour. cello, aeoline.
dulciana. gamba, viola, salicional.
voix celeste, etc. Not ordinary tin-
plated iron, but pure block tin. Other
materials include brass, copper, lead,
zinc, and wood for both "flue" and
"reed" pipes, the latter having vibrat-
ing reeds to produce the tone.
All of the "flutes" in an organ are
flue pipes which have no reeds, but
venerate a vibrating column of air.
Some are open at the top, while
others, an octave lower in pitch for
the same length, are closed off at the
top by stoppers. Among the organ
flutes we find the orchestral flute,
piccolo, melodia. and the soulful
tibia, which is a stopped wooden
pipe very characteristic of the the-
atre organ — intimately "throaty"
and "cooing." and often played solo
during tear-jerking scenes in silent
movies.
A large part of the organ, however.
is made up of the reed pipes of
many shapes and sizes. These range
from the powerful stentorphone to
the delicate vox humana, and include
the trumpet, cornet, trombone, clari-
net, bugle. French horn, English
horn, muted horn, basoon, concertina,
tuba, saxophone, and a whole familv
of organ oboes.
If the organist wishes to play a
passage of music "full organ," using
all of the ranks coupled together, he
does not have to reach up and flick
all of the stop tabs. He has only to
touch a pre-set button under the key-
board— and so with all other stop
registrations he may have selected
beforehand for each of the key-
boards.
"Theatre-Organ Style"
In general, theatre-organ music is
distinguished from other kinds by
its variety, use of the vibrato, open
harmony, accented rhythm, and by
a legato solo-type melody with glis-
sandos to provide melting, gliding
transitions from one note to an-
other. The late Jesse Crawford, re-
nowned self-taught organist at the
old Chicago Theatre in silent-movie
days, probably did more than any
other organist to develop the char-
acteristic style of theatre-organ
music.
The theatre organ is often called
the "Mighty Wurlitzer" because
Wurlitzer pipe organs were acknowl-
edged leaders in the field. But there
were many others, just as there
used to be a dozen makes of projec-
tors on the market in more pros-
perous days. The Robert Morton
organ, for example, was considered
one of the very finest. The tonal
beauty of its strings, tibias. and
melodias has never been surpassed.
Then there was the Marr & Colton.
the Barton. Kilgen. Moller, and Kim-
ball. Some of the orchestral organs
used in theatres were modest 6- and
7-rank jobs; others were 20- and
30-rank giants. The Radio City Music
Hall Wurlitzer. mightiest of all.
comprises 58 ranks of pipework
housed in eight large organ cham-
bers !
The fascinating musical magic of
many famous theatre organs, includ-
ing the Music Hall colossus, is avail-
able via SS^-RPM phonograph
records, both monaural high-fidelity
and stereophonic. And before com-
menting on the content of some of
these records, the writer wishes to
transmit a word of warning to the
unwary.
Warning No. 1. Quite a few phono-
graph records in the low-price cate-
gory are inferior soundwise and,
worse, are mislabeled and pirated.
Special attention is directed to a
long-play record titled "Organ Fan-
tasies— Jesse Crawford." This in-
cludes ten selections, five of which
are played on an electronic organ by
God-knows-whom, and the other five
are re-recordings of the Keith Me-
morial pipe organ in Boston played
by John Kiley. The record jacket
states specifically that this is all the
music of Jesse Crawford — which is
simply not true. Kiley's playing, by
the way, has also been reissued on
other discs as the work of "Merlin."
Caveat emptor! — "Let the buyer be-
ware!"
Warning No. 2. An electronic
organ is not an orchestral pipe
organ. No electronic organ ap-
proaches the theatre organ in tonal
range, versatility, and beauty. The
pipe organ has both sweetness and
majesty; the electronic organ lacks in
both qualities. No matter how skill-
ful the organist, no matter how
closely certain pipe-organ effects are
imitated, the synthetic character and
musical limitations of the electronic
organ are always apparent. This is
a point worth keeping in mind, inas-
much as several famous organists
have recorded on both types of in-
strument, and the record labels do
not always tell which has been used.
Only true orchestral pipe-organ re-
cordings are reviewed below. Never-
theless, we recognize the importance
of the electronic organ in its own
field, particularly for novelty jazz.
One of the most "organ-sounding"
electronic-organ recordings we have
heard recently is "Organ Songs We
Love" played by Eddie Baxter on the
lowrey Organ. I Dot DIP-25435.
stereo. ) It is very good and suitable
for theatre use. but it is still an
electronic organ.
A Few Long-Play Pipe-Organ
Records Suitable for the
Theatre
Note: Records are rated for their
suitability for theatre use as follows.
*** Just great. ** Pretty good.
* Only fair, or of limited useful-
ness.
*** POET AT THE PIPE ORGAN,
Jesse Crawford. Decca DL-8565 (mon-
aural). Irving Berlin's best oldies master-
fully interpreted by the late Jesse Craw-
ford at his finest. The sensitive artistry
of the "poet of the organ" is displayed on
the Lorin Whitney Studio Pipe Organ.
(Needle-tracking difficulties have been
noted with this disc if the record player
is not perfectly level.) Highly recom-
mended.
** THE SOUND OF JESSE CRAW-
FORD, Jesse Crawford. Decca DL-4028
(monaural). Broadway and movie show
tunes of more recent vintage styled by the
inimitable Crawford in a somewhat slow
and pensive tempo.
** OVER THE RAINBOW, Jesse Craw-
ford. Decca DL-8984 (monaural). A
treasure chest of dreamily romantic Craw-
ford stylings of older popular stand-bys.
Crawford's tempo is terribly slow, unlike
his playing 30-some years ago. Hear this
record and use your own judgment as
to the film programs suited to its use.
* GOLDEN OPERA FAVORITES, Jesse
Crawford. Decca DL-4301 (monaural).
An impeccable disc, but accorded only one
star here only because as it seems just
a mite too "classical" for routine use in
the theatre. It comprises well-known melo-
dies from grand opera (whence come some
of our very best tunes), and is suitable
for a subdued dramatic mood. If you ap-
preciate a very fine pipe organ played by
a real maestro, listen to this one whether
you play it in the theatre or not !
** PIPE ORGAN MAGIC, Jesse Craw-
ford. RCA Camden CAL-300 (monaural).
Wow, get a load of that slinky siren on
the jacket! No, Jesse Crawford didn't
look anything like that. She must be the
International Projectionist
February, 1963
goddess of the organ materialized for our
visual delectation.
The jacket doesn't say so, but this
interesting disc is a re-recording of Mr.
Crawford's 78's made on the old Victor
Orthophonic label more than 30 years
ago. You will hear perennial pop tunes
in Crawford's old-time '"movie" style on
the Chicago Theatre Wurlitzer. I compare
this disc with the original 78's in my col-
lection, and found the re-recording job
well done. Some of the songs, not often
heard nowadays, are certain to awaken
memories.
*** COMMAND PERFORMANCE,
George Wright. Life L-1006 (stereo). IP
has received many requests for the titles
and catalog numbers of Wright's organ
recordings, making it apparent that IP's
projectionist readers have an ear for the
very best in organ music. Yes, George
Wright is universally considered to be one
of the best theatre organists of all time.
His playing is dramatically exciting, tonally
varied, and gorgeously phrased. Under
the enchanting spell of his artistry, the
organ comes to life and speaks with the
voices of celestial orchestras. How can
one artist, with only two feet and ten
fingers, summon forth such audio magic
from the pipes of the organ? Well, it's
nothing short of genius — the genius of a
master musician who possesses the heaven-
sent ability of translating mood and feel-
ing into audible terms. COMMAND PER-
FORMANCE is Wright at his best, but
no better than he is in the following discs,
also highly recommended. George Wright
is always at his best — and the best of all!
*** GEORGE WRIGHT PLAYS THE
MIGHTY WURLITZER PIPE ORGAN,
George Wright. Hifirecord R-701 (stero).
Like the foregoing and the following
George Wright recordings, this is also
available on a monaural long-play disc and
on stereophonic tape.
*** GEORGE WRIGHT ENCORES AT
THE MIGHTY WURLITZER PIPE
ORGAN, George Wright. Hifirecord R-702
(stereo) .
*** GEORGE WRIGHT'S SHOWTIME,
George Wright, Hifirecord R-708 (stereo).
*** THE GEORGE WRIGHT SOUND,
George Wright. Hifirecord R-710 (stereo).
*** THE ROARING 20'S, George
Wright. Hifirecord R-718 (stereo).
*** THE GENIUS OF GEORGE
WRIGHT, George Wright. Hifirecord R-
713 (stereo).
*** HAVE ORGAN WILL TRAVEL,
George Wright. Hifirecord R-721 (stereo).
*** THE MIGHTY WURLITZER RE-
MEMBERS THE GOOD OLD SONGS,
Leonard Leigh. RCA Victor LSP-1795
(stereo). The Mighty Wurlitzer sure goes
to town when Minneapolis' Leonard Leigh
tickles the keyboards! Talk about organ
magic — this one is pure musical sleight-
of-hand ! The giant organ sheds its majesty
and romps to toe-tapping glorifications of
pre-World War I jazz. Sheer delight.
** GREAT LOVE THEMES, Dick Lei-
bert. Reprise R-6037 (monaural). Dick
Leibert needs no introduction. One of the
greatest of theatre organists, he has been
staff organist at the Radio City Music
Hall for many years, and is also well
known for his RCA Victor organ records
and his many organ recitals throughout
the country. In this record he treats us
to some of the most famous love music
of all time — themes from the classics
which have been turned into popular
melodies. Beautifully played on the great
Radio City Music Hall Wurlitzer Organ,
but just a tiny bit too "serious" to show
off the tremendous tonal resources of that
famous organ with solo registrations. High-
ly recommended for a serious dramatic
mood.
*** THE FAMOUS RADIO CITY
MUSIC HALL ORGAN, Ashley Miller.
Columbia CS-8230 (stereo). Ashley Miller
and Dick Leibert are equally talented
organists, but in this disc Miller dis-
plays the tonal possibilities of the world's
mightiest Wurlitzer to better advantage
because his selections are more varied
than Leibert's in the preceding record.
Organist Miller's artistry treats us to
glorious renditions of both old and new
pop tunes on one side of this beautifully
recorded disc, to exciting "theatrical"
waltzes on the other.
*** GUS FARNEY AT THE GIANT
FIVE -MANUAL WURLITZER PIPE
ORGAN, Gus Farney. Warner Bros. WS-
1409 (stereo). Sometimes jazzy, some-
times sentimental, this disc is just about
the best sampling of real theatre-organ
music you can get. And no wonder! Gus
Farney was employed by the Wurlitzer
people in the days of silent movies to
perform the Opening Night Concert at
the new Wurlitzer Organ installations.
Master Organist Farney's musical magic
can now be yours for the price of a record.
(Continued on Page 14)
c^d^SrS
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What it does
(Patent Vending)
Trademark registered and copyrighted. Patent applied for.
The C. S. Ashcraft Mfg. Co., Inc.
36-32 Thirty Eighth Street, Long Island City, N. Y.
WHAT the Ashcraft CORE- LITE Arc Lamp
does, makes more sense than HOW it does it.
So, ask any National Theatre Supply Com-
pany man to tell you WHAT the Ashcraft
CORE-LITE Arc Lamp does and he will give
you an earful of facts.
Like this. The CORE-LITE will increase your
screen side-lighting 75 to 1QO% . . . and can
prove it!
Or like this. The CORE-LITE will save more
carbons than you can shake a stick at. 35%
savings can be expected, 50% is not unusual.
And he will prove it in indoor or drive-in
theatres, using existing screens and lenses.
Call or write him NOW!
International Projectionist February, 1963
Projectionist Profile . . .
Ernest Lang Secretary of Local 306,
A Dedicated Man to the Labor Movement
New York's Moving Picture
Machine Operators Union Local 306
rates high among the unions where
the rule is democracy. And the major
credit for that is Ernest Lang, elected
secretary in 1947, and his stalwart
fellow members. Just to name a
few, Harry Garfman, Steve D'Inzillo,
respectively business agents for
Brooklyn and New York.
Ernie Lang's other religion is the
labor movement. He's an idealist
where the union brotherhood is con-
cerned. He told his interviewer "that
the union movement should be free of
corruption, bossism and dictators and
self-seeking leaders or officers."
Lang's door is open to 306 mem-
bers, and the members can have their
say or gripes at the business meet-
ings.
In the old days of the local that
was not the case. The leaders took
control and the members could like
or not. Lang became actively en-
gaged in the struggle in Local 306.
His aim was to destroy these evils
and all the benefits for the member-
ship of a democratic ruled union with
sincere and honest officals. Ever
since Lang's membership in 306 — he
joined the Local in 1933 — he has
studied the labor movement by taking
extra courses, so his union dedication
is honest and real.
He was on the executive board of
306 before he was elected secretary.
Now he is responsible for the Welfare
and Pension Funds (over $2,000,-
000), negotiation of new contracts
and the busy business of the Local.
Under his leadership not a cent rides
on the Funds.
Lang gets to his office at 262 W.
50 St. at 9 a.m. and he is lucky if
his quitting time is 10 p.m. One
time this reporter was in Langs
office the wife of a projectionist who
was a member of 306 told Ernie
about her family troubles and wanted
Lang to speak to her husband to be
more careful and considerate of his
wife and their children. That same
BRIGHTER LIGHT
LONGER BURNING
SHARPER PICTURE
Free Test Samples J
day a member got Lang on the phone.
It seems he got a divorce and wanted
to change the beneficiary of his 306
death benefit.
Ernie Lang has joined numerous
fraternal and charitable organiza-
tions. The Projectionist Square Club
is giving Lang a Gold Card for his
activity in the Club.
He instituted the Will Rogers Hos-
pital donation whereby carbon drip-
pings yield hundreds of dollars a
year to Will Rogers Memorial Hos-
pital and Research Laboratory. Lang
devotes his time to the campaign to
get the copper from the odds and
ends of the carbon from the city's
theatre booths. His friends in the
Local collect the carbons from Man-
hattan, Brooklyn and Queens on their
own time. He is very proud of the
plaque on which Will Rogers gave
him a citation.
Local 306 operates with a part-time
president since 1959. Ernie Lang,
Harry Garfman and Steve D'Inzillo
comprise the working executives.
They had the foresight 10 years ago,
when television was raising hell with
theatre attendance, to slow down on
new members. As a matter of fact
now, on a membership of 16,000,
about 70% of the membership is
above retirement age.
That's why the contract in 1962
with theatres Local 306 negotiators
insisted on raising from 10% to
15% for the welfare and pension
funds. Incidentally that 1962 pact
6-year raises the vacation from two
weeks to three weeks in 1964, with
a 5% increase in wages.
About half of Greater New York
theatres have closed since 1950. With
a sick industry, the 1962 contract
was all the 306 membership could
expect, and without a strike, in which
the projectionists would lose pay;
the unions around the country have
congratulated the negotiators.
Ernest Lang's forebearers were
Hungarians. He went to public grade
and high schools in New York City
and had two years of college. When
ninf* ff?»nf»T» wi'iwwtt*
Ernest- Lang
he was in college he worked as a
reel boy and as a projectionist in
theatres in Manhattan, Brooklyn and
Queens. His favorite hobby is hunt-
ing for deer. He can prove that he's
a good shot by the mounted antlered
buck which adorns his office.
iP
Ruth E. Sherman,
Official of IP, Dies
NEW YORK— Ruth E. Sherman,
widow of Harry I. Sherman, past
president of the 25-30 Club, New
York, and long-time official of
IATSE locals in the New York area,
died recently. Operating Internation-
al Projectionist for many years fol-
lowing the death of her husband,
Mrs. Sherman was serving as a con-
sultant and official of IP at the time
of her death.
iP
William J. German,
Industry Film Veteran,
Will Retire This Year
NEW YORK— William J. German,
an associate of the Eastman Kodak
Co. for the last 57 years and since
1922 a distributor of professional
film to the industry, has announced
that he will retire at the end of 1963.
It is expected that at that time the
distribution of its films will be con-
ducted directly by Eastman Kodak
Co. Eastman expects to continue to
operate from the New York. Los
Angeles, and Chicago metropolitan
areas, with no substantial change in
operational methods. The many users
of Eastman film who purchased film
WM»^^«4
CARBONS INC., BOONTON, N. J.
[tf..»....t|1|fr.... , ,
STEADIER LIGHT
LESS ATTENTION
PERFECT COLOR BALANCE
Free Carbon Chart
International Projectionist
February, 1963
>fc .^
through German will be able to do so
in substantially the same fashion
from Eastman.
Mr. German was first associated
with Eastman in 1906 and in 1922 he
joined the late Jules Brulatour as the
distributor of Eastman raw film to
the nation's motion picture produ-
cers. Jules Brulatour, Inc., was form-,
ed in 1924 with Brulatour as presi-
dent until his death in 1946. At that
time German succeeded as president.
In 1952 German negotiated the
purchase of Brulatour interests and
incorporated two firms under his own
name in Fort Lee, N. J., and in Cali-
fornia. German's firm continued as
supplier to the motion picture indus-
try and captured a large slice of the
burgeoning television business. He
also supplied film for commercial
users and to the U. S. government.
Well-liked throughout the industry,
he was frequently honored by trade
groups for the contributions, both in
time and money, to charity and wel-
fare organizations.
In his 41 years of direct associa-
tion with the motion picture indus-
try, German has become one of its
most widely known and prominent
figures. He has been honored in New
York and in California by industry
and trade groups as well as industry
charity and welfare organizations.
He has been closely affiliated with
a host of humanitarian activities.
His business is not limited to the
motion picture industry since film
was sold and distributed to the bur-
geoning television industry from its
outset, as well as to industrial con-
cerns and governmental agencies.
Shipments were made to practically
all of the states of this country.
In the years that German has been
associated with the motion picture
industry many wide changes took
place. He spanned the era of the
silent pictures, the advent of sound
pictures, the second World War, and,
finally, television. When the first
distributed film there were essentially
two kinds of black and white film
available. Today. W. J. German.
Inc., carries in its inventory more
than three hundred different kinds of
Eastman black and white and East-
man color films, and upon special
order can make available to its users
about 50 additional kinds of Eastman
films.
Looking back over the years, Ger-
man commented that his biggest re-
ward during his years in business
was in the many friends which he
made.
"These years have been rich and
rewarding for me because of the won-
derful people I have come to know
International Projectionist February, 1963
and who have become my friends,"
German said. "These were people
with extraordinary imagination and
genius who enriched the lives, and
are continuing to enrich the lives of
all of us in this country and abroad.
They utilized the technology and the
scientific advances available to them
to create the greatest form of enter-
tainment yet developed by man which
is able to be shared by so many
people. Movies, from the days of the
silent pictures to the present, continue
their magical hold on all people of
all nations. I am optimistic that in
the future, as in the past, the movies
will continue as a great source of
entertainment and influence through-
out the world.
"From the beginning of the motion
picture industry in this country,
Eastman Kodak has made significant
contributions throughout the years to
the progress of the industry through
its great products. The future holds
as much promise as the past in the
development of film products by the
Kodak Co. Eastman films will be
better than ever in the years to
come," he concluded.
iP
■ ■■:;- V:*-' *:":
JWV<
TIP1
SPEED
IN PROJECTION
Kollmorgen lenses rate tops in the motion
picture industry. Used exclusively with
Cinerama, they are standard equipment
in more than 70% of American theaters.
High light uniformity and less light loss
on the screen — the whole screen — are typ-
ical of the outstanding performance of
super snapliteB1 lenses.
Other advantages that add up to supe-
rior screening with super snaplite are:
Wire sharp contrast
Uniform illumination
Crystal clarity
Wide range of focal lengths
Sealed construction
II :
4,
Bulletin 222 describes Kollmorgen
lenses in detail. See your equip-
ment dealer, or write us direct.
CORPORATION
NORTHAMPTON, MASSACHUSETTS
Century Projector Announces New
Series of Projectors, Sound Systems
NEW YORK— A new series of Di-
rect Drive projector mechanisms and
sound reproducers, to be known as
Series M. has been made available to
the theatre trade by Century Projec-
tor Corporation.
THE
VERY.FJUSEST
PROJECTOR
' PARTS i
4635 WEST LAKE ST., CHICAGO, ILLINOIS
PROJECTIONISTS
PREFER
ETHYLOID
Film Cement For
BEST RESULTS
Available from
Supply dealers
FISHER MFG. CO.
1185 Mr. Read Blvd.
Rochester, N.Y.
10
Frank E. Cahill, Jr., Century's dis-
tribution vice president, stated that
the mechanisms are completely new
in design and that both the projector
mechanism and the sound mechan-
isms were designed to complement
each other and will not be marketed
separately. Sold as a combination.
Cahill stated, the mechanisms "are
the answer to the industry's long felt
need for an integrated direct drive
assembly."
Proved Gear Arrangement
The background and history in the
development of the gear arrangement
which has proven to be reliable over
25 years of operation were comment-
ed upon by Cahill, who said that the
present day sound reproducer is an
addition to the motion picture pro-
jector, not a part of a complete and
logical mechanical design.
The speeds of the several shafts
in projectors and sound reproducers
now in use were dictated by the de-
sign of the original hand-cranked
projectors and were never intended
for motorized operation. Also is the
fact that motion picture projectors
were operated at 16 frames per sec-
ond and then increased to 24 frames
per second without adequate re-de-
signs of bearings, shafts, etc. to with-
stand the increased motorized speeds.
A large number of these projectors
are still in use.
All this has been taken into con-
sideration in designing the new Cen-
tury direct drive projectors. Cahill
said.
At the recent Allied-Tesma conven-
tion in Cleveland, Century Projector
Corp. introduced and displayed this
new arrangement for coupling the
projector mechanism and sound re-
producer together. This new drive
incorporates additional features
which result in optimum quietness
with stable, vibration-free perform-
ance, safe and dependable operation.
Cahill added.
Easily Adapted
The New Century drive is said to
be easily adapted for interlock or
synchronous operation with separate
sound reproducers or interlocked to-
gether for 3-D projection. Because
the main drive shaft of the projector
mechanism operates at 1440 RPM ( in
exact synchronism with the shutter
shaft ) interlock motors are easily
attached with simple 1:1 pulleys.
Because of the direct drive coupl-
ing between the mechanism and the
sound reproducer in the new series it
is no longer necessary to utilize a
timing belt drive between the motor
and reproducer, nor from the repro-
ducer to the projector mechanism.
Therefore the requirements for stable,
quiet mechanical operation are ful-
filled without troublesome multiple
gear trains, excess gears and extra
belts.
Analysis of features
( 1 ) Direct Drive Projector Mech-
anism
( a ) The PROJECTOR Main Drive
Shaft Speed is now 1440 RPM
( same as the Shutter Shaft I .
( b ) Good mechanical designs dic-
tate that high speed gears driving
low speed gears are advantageous
for many reasons. In other words,
speed reduction should be used
whenever possible.
The new Century gear arrangement
progresses with mechanical stability
from the motor, operating at 1765
RPM. to the main drive of the projec-
tor at 1440 RPM. Then a step down
in speed to the vertical shaft that now
e tends not only upward through the
projector but also downward through
a flexible, isolation, coupling to the
sound reproducer. This vertical shaft
running through the mechanism and
siund reproducer rotates at 720
RPM. At the several sprocket shafts
the speed is further reduced to 360
RPM which is standard sprocket
speed for 35mm projectors using
standard 16-tooth sprockets.
( c ) Because of the direct drive
coupling between the mechanism
and the sound reproducer it is no
longer necessary to utilize a timing
belt drive between the motor and
reproducer, nor from the repro-
ducer to the projector mechanism.
Therefore the requirements for
stable, quiet mechanical operation
are at last fulfilled without trouble-
some multiple gear trains, excess
gears, extra belts, etc.
The Poly "V" belt incorporates six
parallel "V" tracks running in space-
saving pulleys especially grooved to
mate precisely with the belt ribs.
Thus the advantages of the smooth-
ness of "V" belt drives is combined
into 6 "V" belts operating together
to give greater power efficiency and
additional smoothness. Because the
Mechanism is driven directly from
the motor through the belt, fluctua-
tions in load from the intermittent
movement, sprocket shafts, etc. are
not reflected to the sound reproducer.
iP
International Projectionist
February. 1963
Norelco, Ballantyne Sign Agreement
For Distribution of FP-20 Projector
A major theatre equipment sales
agreement has been announced be-
tween North American Philips Com-
pany, Inc., New York City and Bal-
lantyne Instruments & Electronics,
Inc. of Omaha, Neb., electronics di-
vision of ABC Vending Corp.
Ballantyne will become the major
distributor for the Norelco Model FP-
20 35mm projector.
The announcement was made by
Niels Tuxen, general manager, Mo-
tion Picture Equipment Division of
North American Philips and bv J-
Robert Hoff. executive vice president
of Ballantyne.
Projectors to Ballantyne
The agreement calls for the pur-
chase by Ballantyne of a large num-
ber of Norelco 35mm projectors.
Norelco. in turn, will purchase from
Ballantyne certain assemblies and
sub-assemblies for its projector line
which Ballantvne will manufacture to
Norelco specifications.
Ballantyne will use the FP-20 pro-
jectors for a lara;e number of indoor
theatres already contracted for. In
addition, the units will be adapted to
accept high intensity lamps for use
:i drive-in theatres.
The Norelco units are considered
to be among the most advanced on
the market today and include the
same engineering features as the
Norelco 70/35mm model. Not only
will the units conform to all Ameri-
can standards, but they will contain
some unique features for positioning
and focusing of all makes of arc
lamps, it was stated.
Curved film gate
FP - 20 features simple driving
mechanisms with a minimum of
transmission. It is said to be easy to
thread with the smallest number of
oarts included in the film path. It
has a curved film gate and is suit-
able for all 35mm films. It has double
soeed. single blade shutters and a
high liffht efficiency, the announce-
ment said.
In addition, the above projector
can be supplied with facilities for
remote focusing and framing. As a
complete unit, the FP-20 incorporates
the optical sound head on the same
base with the proiector mechanism.
Provision is made for a magnetic re-
producer which is supplied as an op-
tional feature.
A water-cooled film gate is said to
eliminate the problem of film buckl-
ing.
Mr Hoff said that the trade will be
supplied under the existing teams ap-
plicable to the sale of this projector.
He also said that within a few weeks
Ballantyne would announce a "revo-
lutionary new concept in the market-
ing of theatre equipment."
iP
PROJECTOR
CARBONS
Better
Light!
Lower
Costs!
RINGSDORFF CARBON CORP. East McKeespor.t, j'a.
How electrical noise is produced . . .
calculated . . . measured . . . controlled
Here are the basic facts about electrical noise — how it originates
in circuits . . . what terms describe it . . . how to measure it . . .
how to design circuits to minimize its undesirable effects. The
physical nature of the various sources of noise are clearly de-
scribed, including such sources as thermal agitation or resistance
noise . . . shot noise in vacuum tubes and semiconductor junctions
. . . noise from spontaneous emission of electromagnetic radiation
. . . and noise in gas discharges. This practical book also explains
auxiliary mathematical techniques, and discusses the relation of
signal and noise in various types of communication systems. For
ease in use, the simple tuned circuit associated with a device for
measuring average power is made the basic tool for analyzing
noise.
ELECTRICAL
270 pages, 6x9
105 illustrations
$10.00
By WILLIAM R. BENNETT
Data Communications Consultant, Bell Telephone Laboratories, Inc.
Each chapter in this helpful book begins in
a simple, practical manner and works toward
more complicated examples. For example, prop-
erties of thermal noise and its relation to black-
body radiation are deduced from basic laws
of thermodynamics and statistical mechanics.
You also will find a clear treatment of elemen-
tary quantum mechanics in discussions of the
maser and of noise in semiconductors. And, in
describing noise properties of various devices,
the book fills in your working background with
basic facts on junction diodes — transistors —
gas discharge tubes— klystrons— traveling wave
amplifiers— and others. Both independent and
dependent noise sources are analyzed.
In addition to the standard theory of noise
figure and its significance, a treatment is given
of the more comprehensive Haus-Adler theory
of noise measure. Throughout, the book stresses
the universality of noise-like phenomena. Noise
formulas for diodes and transistors; noise gen-
eration to meet specifications; design of ampli-
fiers for minimum noise effects— these and many
other topics "are covered. A comprehensive re-
view of noise in the various methods of signal
transmission such as amplitude modulation . . .
frequency modulation . . . and the different
kinds of pulse modulation is included.
CONTENTS
1. General Properties of Noise
2. Thermal Noise
3. Distribution of Magnitudes in Noise Sources
4. Noise in Vacuum Tubes
5. Noise in Semiconductors
6. Noise in Electromagnetic Radiation
7. Noise-generating Equipment
8. Noise Measurements and Techniques
9. Design of Low-noise Equipment
10. Application of Fourier Analysis to Noise
Problems
11. Noise in Communication Systems
INTERNATIONAL PROJECTIONIST
Post Office Box 6174
Minneapolis 24, Minnesota
Please send me a copy of "Electrical Noise"
by William R. Bennett. (I enclose $10.00.)
Name
Address
City & State
International Projectionist February, 1963
11
W. J. Cosby, J. R. Hoff Named
To TESMA Board of Directors
NEW YORK— W. J. (Bill) Cosby
and J. Robert (Bob) Hoff have been
appointed by TESMA president
Larry Davee to the board of directors
of that organization to fill unexpired
terms of two resigned directors.
Cosby will fill the unexpired term
of V. j. (Jack) Nolan of National
Carbon Co. and Hoff is to serve the
unexpired term of Leonard Satz.
Techikote Corp. Both directors re-
signed because of press of business.
Cosby, presently marketing man-
ager, arc carbon products for Nation-
al Carbon Co.. has been with that
company since his graduation from
Purdue in 1950. Cosby matriculated
at Purdue, immediately upon his
discharge from the U. S. Army Air
Corps, in which he served as a bom-
ber pilot in the European Theatre, as
a 1st Lieutenant.
Cosby started with National Car-
bon as a salesman after undergoing
the company's training course, was
advanced to district sales manager
in the Cleveland area. He came to
New York three years ago as national
sales manager for arc carbons in the
theatre division and was advanced
to his present job as marketing man-
ager for all arc carbon products
about a year ago.
Hoff is a veteran in the theatre
equipment manufacturing field and
*tf
'LET'S TWIST"!
Yes, That Easy to Use -No Tools Needed
Just Twist The Stub In & Out . . .
NO GRINDING— NO DIRT
<»»*
IF YOU ARE NOT USING The
"Little Miser" Carbon Saver
YOU are losing several Hundred Dollars
Each Year!
4 Sizes 9-1 0-11 m.m. $3.00 Each
13.6m.m. $4.50 Each
ORDER Now— Start Saving Money $$
(We Suggest 3 In Each Projection Room)
LOU WALTERS
Sales & Service Co.
MOTION PICTURE EQUIPMENT
EV 8-1550
4207 Lawnview Ave, Dallas 27, Texas
is a veteran executive of TESMA.
He was a practicing attorney and
subsequently joined the Ballantyne
Co. as sales manager following World
War II, during which he served in
the Navy. He has been a board mem-
ber, vice-president and president of
TESMA and has served on its board
since TESMA's reorganization in
1946. Hoff presently is executive
vicepresident of the Ballantyne In-
strument & Electronics Co. and a
member of the board of directors of
ABC Vending Co.. the parent com-
pany of Ballantyne.
iP
Radiant Represented
At German Photokina
Radiant Manufacturing Corp.,
world's largest producer of projection
screens for home, school and indus-
try, will again participate in the
International Photokina Exposition,
March 16-24 at Cologne, Germany.
Being introduced for the first time
is a new. low priced tripod screen
with silver lenticular surface. Radiant
pioneered in the development of len-
ticular surfaces and through its
modern, fully automated plant has
now brought the price within most
budgets. The silver lenticular surface
has achieved popularity around the
world because it provides brilliant
pictures over a wide angle of view
both in darkened and partly lighted
rooms. iP
SMPTE SETS MEETING PROGRAM;
LITTLE ON PROJECTION EDUCATION
NEW YORK— A wide range of
motion picture and television techni-
cal topics will be discussed when
scientists and engineers meet this
spring at the Traymore Hotel in
Atlantic City, N. J..' April 21-26. for
the 93rd seminannual convention of
the Society of Motion Picture and
Television Engineers.
Subjects of interest to projection-
ists include:
"Application of Motion Pictures
and Television to Education" under
0. S. Knudsen of Iowa State Univer-
sity.
"New Instrumentation in Tele-
vision" under R. L. Pointer of Ameri-
can Broadcasting Co.. New York.
"New Technology of 8mm Com-
mercial Motion Pictures" under Dr.
C. Loren Graham. Eastman Kodak
Co., Rochester. N. Y.
In a move to accommodate an
increasing number of industrial firms
and government agencies requesting
exhibit facilities at its 93rd Conven-
tion, the SMPTE has. arranged for
an additional 1,500 sq. ft. of display
space.
The equipment exhibit will include
a variety of high-speed and instru-
mentation devices, film laboratory
control and processing tools, tele-
vision cameras, television tape and
film recording equipment, as well
as special motion-picture and tele-
vision devices and 8mm motion-
picture equipment.
Among those manufacturers that
have already contracted for display
space at the convention are the fol-
12
lowing: Animation Equipment Com-
pany; Arriflex Corp. of America:
Bell & Howell Co.; Birns & Sawyer
Cine Equipment Co.: CBS Labora-
tories: Camera Equipment Co.:
Camera Mart; Canon Camera Co. of
Japan; ColorTran Industries; Com-
prehensive Service Corp.; Ehren-
reich Optical Industries; Elgeet
Optical Co.: Filmline Corp.: Oscar
Fisher Co.: Florman & Babb, Inc.:
Hi-Speed Equipment Co. ; Hollywood
Film Co.: Houston-Schmidt. Ltd. of
Canada: Lipsner-Smith Corp.; Mag-
nasync. Inc. ; Motion Picture Enter-
prises; Photo-Sonics, Inc.; Precision
Laboratories; Quick-Set. Inc.; Shiba
Electric Co. of Japan; S.O.S. Photo-
Cine-Optics; Sylvania Electric Pro-
ducts; Time Automated Mfg.. Inc.:
Wollensak Division. Revere Camera
Co.: and Zoomar. Inc.
IP
Motion Pictures Being
Lost Through Neglect
Large numbers of historically
significant motion pictures are deter-
iorating through neglect. John Flory.
Eastman Kodak non-theatrical film
advisor, told participants at the 92nd
convention of the Society of Motion
Picture and Television Engineers at
Chicago's Drake Hotel.
"Mile after mile of motion picture
film is turned out each year for fic-
tional, informational, and documen-
tary productions," Flory said. "Little
is being done to preserve these im-
portant records of our times. A coor-
February, 1963
International Projectionist
dinated, national program of motion
picture archives is desperately need-
ed."
Flory commended the work of the
Library of Congress, the National
Archives, several private museums,
and a number of government agen-
cies. But he said that these few insti-
tutions could not cope with the econ-
omic and engineering problems
posed by ever increasing numbers of
films.
'"The current output of new motion
pictures in the U. S. is nearly 30,000
per year," he said, "more than double
the number of books published an-
nually in this country."
"We will reach a point-of-no-return
unless orderly channels can be set
up to cope with the problems of
housing, preserving, and cataloging
this material," Flory stated. "The
task is too great for one or a small
number of groups. It must be under-
taken at local, state, regional, and
national levels."
Flory recommended a broad pro-
gram to include : 1 ) efforts to make
archivists more aware of the histori-
cal significance of film; 2) better
dissemination of technical informa-
tion; 3) the development of person-
nel qualified to serve as film archi-
vists; 4) the collection of films by
specialized institutions; 5) the col-
lection and publication of a list of
institutions where films exist; and
6 1 an immediate catalog of films
now held in archives. iP
Harwald Develops
"Coordinator" for
Auto. Film Inspection
A further stride in the automation
of motion picture film inspection and
maintenance is offered in the new
dual-unit "coordinator" developed
by the Harwald Co.. Evanston, 111.,
manufacturer, to increase the effici-
ency and reduce worker fatigue in
film libraries where one man operates
two of the firm's widely used film
inspection and cleaning machines.
The new coordinator unit is designed
to fill the corner created by two
adjacent Inspect-O-Film machines
set at right angles to each other. It
adds to their already ample table
space, keeps a record of the time each
machine has been run, and affords an
indisputable graphic paper record
of an inspected film's physical con-
dition.
When an expert inspector works
by hand he passes the film slowly
through his gloved fingers to "feel"
for tears, thick spices, burned frames,
punch marks, bad sprocket holes —
the machine does all this automatical-
ly by means of jewelled feelers with
an electronic control that stops a
film instantly, without coasting,
whenever such defects appear. Fur-
thermore, it does this many times
faster than the most expert manual
inspector, and much more accurately.
Professional engineering counsel
is offered on all film inspection and
cleaning problems, and on film
library layout and operating routines,
on a non-obligation collect phone-
call basis, to Evanston, 111. Area Code
312, DAvis 8-7070. iP
SOS Has New Front
Projector Editor
NEW YORK— A new way of direct
front projection editing by means of
a small bench or table mounted unit
has been announced by S.O.S. Photo-
Cine-Optics, Inc. This device, mea-
suring 7 in. by 6 in. by 7 in. is said
to project a large image without
flicker or distortion. Called the
S.O.S. Projectola, it is designed for
viewing by a number of persons
simultaneously.
A four element projection lens with
front objective 40mm diameter com-
prises the optical system which has
been coated and corrected for high
illumination and sharp, brilliant
pictures.
The film guiding elements have
grooves for the picture and sound-
track, thus safegarding the film
against damage and ensuring uni-
formly sharp pictures with forward,
reverse or still projection. Little
adjustment is required. The gate
holds the picture in focus at all times.
The S.O.S. Projectola for 16mm
silent and sound films, left to right
operation, including lamp and pro-
jection case sells for $169.50. Re-
winds, rods and a splicing table for
the unit cost $29.95 additional.
iP
MARTIN KIRCHNER
SPRINGFIELD, MO. — Martin A.
Kirchner, 63, suffered a fatal heart
attack while working at the Gillioz
Theatre here. He had been employed
at the Gillioz since it opened 36 years
ago.
Mr. Kirchner was a member of IA
local 447, Springfield, for most of
that time.
Surviving are his widow. Edna M..
two daughters, a brother, two sisters
and two grandchildren.
A. J. Hatch of Strong
Electric Details Xenon
Lamp to Dealers
CLEVELAND— The place of the
new Xenon projection lamp in
motion picture theatres was the sub-
ject of an address by Arthur J.
Hatch, president of the Strong Elec-
tric Corp., before more than 30 inde-
pendent theatre supply dealers at a
special meeting at the Allied-TESMA
TEDA meet at the Sheraton-Cleve-
land. Hatch also presented a low
current economy model projection
lamp. k
The dealers were briefed on the
Strong sales policy, new prices and
discounts.
Cliff Callender, sales manager
discussed the blown arc type lamp
and cold type reflectors. William
White, sales, and Harold Plumadore,
projection lighting engineer, were
also in attendance. A question and
answer session also was on the pro-
gram.
Dealers registered at this special
session included Jack Dusman of
Baltimore; Hal Hornstein of Miami;
George Hornstein, New York City;
Lou Walters. J. H. Elders and J. C.
Skinner, Dallas; Joe Birdwell, El
Paso; Dick Sutton, Des Monies;
William Edmondson and A. E. Geis-
sler. Atlanta; Harold Wayne and
Tom Graham. Charlotte; H. J.
Ringold, Grand Rapids: Roy Smith,
Jacksonville; Vivian Harwell, Birm-
ingham; S. L. Contos. Lou Watke,
and J. E. Miller, Los Angeles; A.
Weiss and N. Lubich, Cleveland; Al
Boudouris. Toledo; Bob Tanker-
sley, Denver; Phil Wicker, Greens-
boro; John Kinney, Detroit; Al
Morton, Houston; Ernest J. Comi
and Peter E. Comi, Boston; Armond
Besse, Montreal. . IP
Norelco
projection
equipment
Available from
leading theatre supply
dealers
North American Philips Co., Inc.
Motion Picture Equipment Division
100 E. 42nd St., New York 17, N.Y.
International Projectionist February, 1963
13
THEATRE ORGAN
** EDDIE LAYTON AT THE MIGHTY
WURLITZER. Eddie Lay ton. Mercury SR-
60105 (stereo). Old and new pops played
on the organ in the broadcasting studio
above the Music Hall, not the giant organ
in the Radio City Music Hall, itself. The
added percussive accompaniment seems
unnecessary, considering the percussive re-
sources of a theatre organ. One of the
numbers ("I'm a Little Teapot") is musi-
cally a mess; another ("Baubles, Bangles,
and Beads") is spoiled by the presence
of low frequencies which may cause
groove-skipping and other tracking diffi-
culties. Most of this record is very good,
however.
PIPES AND PEDALS, Charles Rand.
Coronet CXS-152 (stereo). Classical melo-
dies somberly and unimaginatively styled.
Definitely too "'churchy" for the theatre.
Limited display of organ voices, and no
vibrato is used. As might be expected,
Handel's "Largo," famous showpiecs for
the classical organ, is present, but cut
off in the middle of a bar at the end
of the second side! From the musical
point of view, this is equivalent to de-
capitating Handel, himself. I cannot re-
commend this record, and mention it only
because so many stores have it on their
"bargain" shelves.
** ORGAN MAGIC, Kenneth Lane.
Tops L-1707 (monaural). Standard pop
tunes well played on the Palace Theatre
organ.
*** SOPHISTICATED PIPES, Don
Baker. Capitol T-1171 (monaural). The
famous organist Don Baker has never been
heard to better advantage on a recording.
His superbly masterful stylings are redo-
lent of the dramatic eloquence we associ-
ate with the theatre organ. This is a
thrilling and often haunting evocation of
organ moods on the beautiful Robert
Morton pipe organ, considered by many
to be the finest theatre organ ever made.
Marvelous!
*** AMERICA'S FAVORITE ORGAN
HITS, Don George. Reprise R-6008 (mon-
aural). Meltingly moody interpretations
of older pops very beautifully played by
a master of the theatre organ. Wonder-
fully enjoyable.
* LEON BERRY AT THE GIANT
WURLITZER ORGAN, VOL. 4, Leon
Berry. Audio Fidelity AFSD-5845 (stereo).
The Wurlitzer recorded on this disc is not
exactly a giant, but a rather small one
located in the basement of Organist Berry's
home near Chicago. The great variety of
percussion attachments which have been
added to this organ are overdisplayed,
making the older pop tuns distinctly
mechanical and unexpressive in rendition.
JOHN KILEY PLAYS BIG PIPE
ORGAN, VOL. I, John Kiley. Diplomat
2203 ( monaural ) . Old standards and
chestnuts muddied by "nervous" phrasing
and a tiresomely "quivery" pipe organ
which doesn't seem to be quite in tune —
the "calliope" in the Keith Memorial
Theatre, Boston. Not even one star for
this record.
JOHN KILEY PLAYS BIG PIPE
ORGAN, VOL. II, John Kiley. Diplomat
2207 (monaural). It may be only a matter
of personal taste, but this writer feels that
Vol. 1 (above) is quite enough. Kiley's
phrasing often appears nervously hurried,
and some of the melody chords seem con-
fused. But perhaps the organist is not so
much to blame as the organ. The vibrato
14
from page 7
is so excessively quivery that tonal purity
is lost and some of the pipes sound
slightly out of tune. The music some-
how fails to "communicate," and tends to
become irritatingly tiresome as it goes on
— and on and on.
MAGIC FINGERS OF MERLIN, Mer-
lin. Grand Prix K-141 (monaural). Mer-
lin's fingers are not nearly as magical as
his identity. All the selections on one
side of this disc are duplicated exactly by
numbers on John Kiley's Diplomat 2203,
and all on the other side by Kiley's Diplo-
mat 2207. They are exactly the same. The
out-of-tune vibrato is the same, and this
reviewer's estimation of the music is the
same.
Worse than this, five of Kiley's Diplomat
renditions have popped up on ORGAN
FANTASIES— JESSE CRAWFORD (Spin-
orama S-102). John Kiley may be Merlin,
but he is not Jesse Crawford!
Organ recordings with precussive
accompaniments (bongo drums,
traps, cowbells, rattles, etc.) are not
recommended for use where theatre-
organ solos are desired. In general,
these percussion-accompaniment re-
cords sacrifice musical quality to
show off high-fidelity recording or
the stereophonic effect. These are
"sound samples," not works of music,
and hence generally fail to perform
the functions of music, which are
esthetic, not scientific. There is no
place for these in the theatre.
There may be a difference of opin-
ion with regard to organ music ac-
companied by some other instrument
— a piano, harp, saxophone, harmon-
ica, etc. Many people feel that the
organ is sufficient unto itself, and
that no independent accompaniment
is needed. Pianos and harps, for
example, are built into most pipe
organs, and may be played from the
keyboard by the organist. An inde-
pendent accompanist tends to subdue
the organ because the organist, aware
of the power of his instrument, is
always on guard against "drowning
out" the accompanist. A full organ
played with the swell pedal open is
even louder than a large orchestra!
If you want to try out something a
bit off the beaten track of indepen-
dently accompanied pipe organ, how-
ever, vou mav find ORGAN IN THE
MODERN MANNER by Perry Bur-
gette with trio of pleasing listening
experience. ( Hi-Life HLS-36, stereo. )
It features organ stylings of romantic
favorites with instrumental accom-
paniments sandwiched between the
straight organ solos on the disc. And
there is something strangely be-
witching about the organ — fluty and
celestially remote like music from the
stars. An odd one, but worth trying.
iP
Skouras Building
Theatre in
New York Suburb
NEW YORK — Skouras Theatres
Corp., will build a theatre in Lefrak
City, near Rigo Park, Queens, Long
Island, it was announced by Salah
M. Hassanein. president of the cir-
cuit. The theatre will be located in
the heart of a vast apartment house
complex which is presently under
construction by the Lefrak Organiza-
tion.
According to Mr. Hassanein, the
theatre will be one of the most luxur-
ious showcases ever built in the
metropolitan area. Included in the
plan is provision for roof-top parking
with direct access to the theatre.
The attraction signs will face the
Long Island Expressway. iP
New Brochure
A new brochure on a complete line
of incandescent and carbon arc spot-
lights for theatres has just been pro-
duced by the Strong Electric Corp.
It includes a description and illus-
tration of each model, together with
range of focal length lens system, and
specifications.
A copy will be sent to anyone ad-
dressing a request to the Strong
Electric Corp.. 31 City Park Avenue,
Toledo 1, Ohio. iP
Sound Service Men
Get Wage Increase
Sound service engineers employed
by Altec and RCA this month are re-
ceiving first benefits of a two-step
wage increase negotiated by the
IATSE general office. The raise
amounts to $5 per week for 1963. to
be followed by another $2.50 in
1964. That will bring the minimum
weekly pay of IA sound men to
$160.
The automobile allowance has been
increased from 7c to 8c per mile.
Special meal periods have been pro-
vided, and the clause covering com-
pensation for work on holidays has
been strengthened.
The contracts with Altec and RCA
normally become the pattern for
later settlements with other sound
service companies. iP
MONTHLY CHAT
(Continued from Page 3)
of today's new developments in
screen presentation. It's time for the
film industry to launch a public rela-
tions campaign to recognize the the-
atre projectionist as an important
man in the film house. iP
International Projectionist February, 1063
» AUTHORITATIVE
» COMPREHENSIVE
» PRACTICAL
Acclaimed by leading technicians in
the industry as the most comprehen-
sive and down-to-earth handbook pub-
lished to date on the subject of motion
picture projection. Ideally suited for
study and reference by your opera-
tors.
ROBERT A. MITCHELL'S
MANUAL OF PRACTICAL PROJECTION
HANDY 51/2" x 8l/2" SIZE — 450 PAGES
ILLU STRATED
CROSS INDEXED FOR EASY REFERENCE
*k Here is one of the most help-
ful works ever published for
the motion picture projection-
ist. A handsomely bound and
profusely illustrated compila-
tion of the BEST of the Robert
A. Mitchell articles that have
appeared in "International
Projectionis t," revised,
brought up to date.
* The author covers clearly
and thoroughly every aspect of
motion picture projection, pre-
senting his material in easily
understood language — not too
technical, yet technically ac-
curate. The Manual is divided
in 8 sections and contains 30
chapters — a valuable refer-
ence work no progressive pro-
jectionist should be without.
!
SECTION HEADINGS
(1) Film; (2) The Projector; (3) Projection-Optics. Screens: (4) The Arc Lamp;
(5) General Projection Practice; (6) Motors, Generators, and Rectifiers; (7)
Sound Reproduction Systems; (8) Projection of Color and 3-D Films, Formulas.
ORDER YOUR COPY TODAY * USE THIS HANDY FORM
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Gentlemen: please send me copy (copies of ROBERT A. MITCHELL'S MANUAL OF
PRACTICAL PROJECTION. Enclosed is my check (or money-order) for $
NAME
ADDRESS
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International Projectionist February, 1963
15
WHY PAY 25%
MORE FOR
PROJECTION
LAMPS AND
RECTIFIERS?
SAVE BIG MONEY
PROOF:
(See any published list prices of all makes)
on
LOW CURRENT • HIGH INTENSITY
PROJECTION LAMPS
AND BI-POWR RECTIFIER
See Your Independent Theatre
Supply Dealer Today or send for
details on this complete booth
equipment
BY FAR THE LOWEST IN COST
and having every desirable
feature, is
WORTH MANY TIMES THE PRICE
YOU GET MORE LIGHT
AND RADICALLY CUT
OPERATING COSTS
Here's why:
-Ar Burns a 20-inch (not just a 17%") black 11 mm. positive carbon
at 85 amperes, consuming only 7 inches per hour, insuring 214
hours' operation at only 15.7c per hour. Projects about
10% MORE SNOW WHITE LIGHT
than lamps burning 8 mm. copper coated carbons at 70 amperes,
which costs 23c per hour.
• OBTAINS SCREEN UNIFORMITIES OF UP TO 100%
• FULL 18-INCH DIAMETER REFLECTOR.
An Optical System Acknowledged To Have No Peer In Efficiency.
• Both positive and negative drive motors are Bodine geared
head— the finest. Each motor has a separate feed controL
ELECTRIC CORPORATION
31 City Park Avenue • Toledo I, Ohio
The World's Largest Manufacturer
of Carbon Arc Lamps
ALWAYS FIRST
with new and efficient developments.
INTERNATIONAL
iitilMP
j*
Daniel Rehklau and Art Partis of IA Local 228 check Strong Electric Corp. lamps — Story on page 8.
(X896°) UOTSTAXa *z>vzo
sssj3uoo jo iCiBiqx'i
MARCH
VOLUME 38
40c A COPY
1963
NUMBER 3
$3.00 A YEAR
SHARP NEGATIVES RATE SHARP PRINTS! That's the only way to get and hold audience attention-to
do full justice to a script. Answer: Go Eastman all the way— negative and print-stock. And give the
print-maker time to do his job right. Also, in the case of questions— production, processing, projec-
tion—always get in touch with Eastman Technical Service.
For more information, write or phone: Motion Picture Film Department, EASTMAN KODAK COMPANY,
Rochester 4, N. Y. Or— for the purchase of film: W. J. German, Inc. Agents for the sale and distribution
of Eastman Professional Film for Motion Pictures and Television,
Fort Lee, N. J., Chicago, III., Hollywood, Calif.
EASTMAN FILM
International Projectionist March 1963
INTERNATIONAL
PROJECTIONIST
Including a special Audio-Visual section relat-
ing to the operation and maintenance of A-V
equipment in the educational and industrial
fields.
Volume 38 March, 1963 No. 3
FRANK W. COOLEY, JR.
Editor and Publisher
RAY GALLO
Executive Publisher
AL BLOOM
Managing Editor
TOM KENNEDY
Equipment Editor
RAY GALLO ASSOCIATES
National Advertising Representatives
545 Fifth Avenue, New York 17, N. Y.
Telephone Murrayhill 7-7746
(Area Code 203)
IN THIS ISSUE
Arc Lamps and Power 4
By ROBERT A. MITCHELL
The Cover Story 8
Theatres arrd Pay TV 10
Letters to the Editor 12
New Cinerama Theatre 15
"Talaria" for Pay TV 16
News Notes — Technical Hints — Miscellaneous Notes
INTERNATIONAL PROJECTIONIST, published monthly by the
International Projectionist Publishing Co. division of The
Northern Publishing Co., Post Office Box 6 1 74, Minneapo'is
24, Minnesota. Editorial offices, 1645 Hennepin Avenue,
Minneapolis 3, Minn. Subscription Representatives: AUS-
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be submitted four weeks in advance of publication date to
insure receipt of current issue. Second-class postage paid at
Minneapolis, Minn. INTERNATIONAL PROJECTIONIST as-
sumes no responsibility for personal opinions appearing in
signed articles, or for unsolicited articles. Entire contents
copyrighted 1963 by INTERNATIONAL PROJECTIONIST
PUBLISHING CO.
1
VVVVV%VVVVVVVVVVVVVVVVVVVVVVVV%VVVVVVVVVVVVVVVVVVWVM
MONTHLY CHAT
vvvvv»v»vvvvvvvvvv»vvvv»»vv»v»v»vvvvvv»v»vvvvvvvvww<
FILM HANDLING BEGINS AT HOME
No useful purpose would be served at this stage by
opening up the perennial question: who is responsible
for the poor condition of prints which are delivered to
the theatres — the projectionists or the exchanges?
Leaving aside the exchange's lack of care, a minority
of operators, so the conscientious projectionists say,
mutilate the prints with cue marks and sloppy patches
and badly done repairs.
The projectionist knows that the print and his equip-
ment is the bloodstream of the film industry, because
the paying customer sees the print the operator is project-
ing and that is what the customer will see whether its
perfect print or a scratchy and mutilated one.
So the good craftsman will handle the print carefully
in the many operations in the booth, such as its inspec-
tion, projection, rewinding, repair and storage.
The consensus of veteran projectionists is that about
eight operators in ten will handle the film with the
utmost care in addition to the operations in the booth
such as repair of breaks, badly made splices and tears.
So he can send it to the next projectionist in runable
condition at least.
Then maybe the laggards in the booths have been
disgusted in the prints delivered to the theatre; have
gotten tired of spending two or three hours to put the
prints in running condition. Maybe the exchanges could
give a good lesson to the minority of operators who don't
handle film with care by delivering prints in fine run-
ning condition. The laggards in the booth have the per-
fect alibi for continuing their slouchy ways if the ex-
changes have the very same attitude.
While there is just as much need from the projection-
ists to exercise greatest care in handling prints as for
exchanges to do so. There is one factor of negligence
which is more glaring when the fault is with the ex-
change. The exchange is the real sponsor of the picture
and should set a good example by seeing that the print
is in good running condition before delivering it to the
theatre.
The Projectionist Responsible
But the projectionist is responsible for screening a
picture for the theatre customers in the best condition
with the poor or good print and the condition of his
equipment.
The projectionist has to be conscientious in inspect-
ing the film when it's first delivered, and repair breaks
and loose splices to put the print in running condition.
The boothmen are responsible from the minute the print
is delivered to the time that it goes out of the projection
room. It's their responsibility to carefully handle the
print during its operation in the projection booth.
The big city showcase houses do not have the print-
problem the subsequent runs do, but patrons of the subse-
quent run theatres pay the admission price and their
right to see the same picture is as valid as the city
folks, because the picture is advertised in the national
magazines as glowingly as in the city newspapers.
Sad to say, many of the subsequent run theatres
have worn-out projectors, lamps and sound systems. But
the skilled craftsman makes the best of it and carefully
handles the print.
(Continued on Page 9)
International Projectionist March 1963
Volume 38
March, 1963
Number 3
ARC LAMPS ARE 'FUSSY" ABOUT
THE POWER THEY BURN!
By ROBERT A. MITCHELL
It doesn't take much projection experience to teach
the lesson that the carbon arc is mighty particular about
the electric power supplied to it. So narrow is the mini-
mum-maximum current range for any one trim of car-
bons, that it's inviting trouble to ignore the current
ratings specified by the carbon manufacturers. And mat-
ters are complicated by the fact that the carbon arc,
like any other gaseous discharge, is a greedy "current
hog"!
We can burn an ordinary household light bulb at
a certain standard voltage, and that is that. The bulb
takes just so much current (amperes) from the line,
and consumes electric power at a constant rate. A 100-
watt bulb never takes it upon itself to burn up 150 or
200 watts! The electrical resistance of the filament re-
mains constant (for all practical purposes) over a wide
range of supplied voltages. The carbon arc behaves very
differently — the more current it gets, the more it wants!
Apply a certain voltage across the terminals of an arc
lamp, then strike the arc to start it burning. This voltage,
if supplied by a powerful source of direct current, results
in the passage of a certain number of amperes in the
arc-lamp circuit. But as the arc stream (composed of
gases and electrons) gets hotter, it becomes more con-
ductive, and the resistance of the arc to the passage of
current decreases. More current (amperes) then flows
through the arc, making the arc stream still hotter and
more conductive. Almost immediately (if the fuses don't
blow or the wiring doesn't burn up) the arc becomes a
virtual short circuit, flaming violently along the length
of the carbons. A "fixed resistance," such as a light-bulb
filament, never behaves like this.
In order to burn properly, therefore, the carbon arc
must be electrically controlled in an automatic fashion.
The supply of current must be automatically limited as
the arc stream loses resistance and tends to pass more
and more current. Rectifiers limit the current by means
of the reactance of the transformer coils. The greater the
current consumed by the arc, the greater the opposing
counter-electromotive force which limits the voltage (and
hence the current) in the rectifier circuit. This process
is a continuous one, and results in a constant current in
the arc-lamp circuit as long as the carbon-feeding mecha-
nism of the lamp maintains a constant arc-gap length —
the distance between the tips of the positive and negative
carbons.
The flow of current is automatically limited when a
generator is used by a "ballast rheostat" which is con-
nected in series with the arc lamp. The ballast is a
"fixed" ohmic resistor having sufficient resistance to the
flow of arc current to develop a "voltage drop" across
its two terminals. As more current flows through the arc,
more flows through the ballast rheostat, too. More cur-
rent means a higher voltage in the circuit, and hence a
proportionately greater voltage drop across the ballast.
This limits the voltage (and hence the current, or am-
peres) which can flow through the arc. The arc stream
then stops getting hotter and more conductive, and a
constant current is established.
Unfortunately, a ballast rheostat wastes valuable pow-
er by converting it to heat (as any resistance does), but
its use is absolutely necessary in an arc circuit supplied
by a multiple-arc motor-generator set.
Wiring Requirement for Arcs
A high-amperage current needs heavy wires, connect-
ing lugs, and switches to conduct it without loss from
its source (generator or rectifier) to the unit in which
it is used (carbon arc or xenon lamp).
B & S wire size No. 3 is the smallest that should ever
be used between the power supply and an arc lamp,
no matter how low-powered the lamp may be. This size
will serve for all arc currents up to 100 amps. No. 2
wire, still heavier, should be used for currents in the
100-120 amp. range, while No. 1 wire is needed for
120-140 amps. Arc currents more powerful than 140
amps, require No. 0 wire. Most lamp manufacturers
recommend that wires one size larger be used whenever
the transmission line between the source and the lamps
exceeds 15 or 20 feet in length. This recommendation
is important for those theatres having a motor-generator
set located in the cellar, far removed from the pro-
jection room.
The xenon lamp equipments presently on the market
have power ratings ranging from 900 to 2500 watts.
These xenon lamps are served by No. 3 leads from the
rectifiers to the lamps.
It is always better to use transmission wiring larger
than required by immediate needs. If the wires are
heavy enough, they will still be serviceable when a
International Projectionist March 1963
change is made to more powerful lamps. Undersize
wires warm up when carrying the 40 to 180 amps,
burned in an arc lamp. This is dangerous, particularly
when the heat is confined by insulation, cable sheathing,
conduits, etc. The temperature may rise high enough
to char the insulation and render the transmission wiring
more unsafe than ever.
A corroded or loose connection anywhere in an arc-
lamp circuit will cause serious operating difficulties
even when the transmission wires from the rectifier or
generator to the arc lamp have adequate current-carrying
capacity. And the heavier the arc current, the more
likely that a bad connection will offer erratic resistance
to the current and cause the arcs to behave unpredictably.
Thus the projectionist is never allowed to forget that his
projection lamps are the most sensitive of electrical de-
vices. They brook no deviations whatever from their
normal current requirements.
Are the Carbons at Fault?
Time and again the carbons get unfairly blamed for
electrical defects in the arc-lamp circuits. If the carbons
escape the projectionist's wrath, the current source or
the lamps, themselves, may be the targets of a few choice
cuss-words. And while it is true that carbons, generators,
rectifiers, and lamp mechanisms can be at fault, a mis-
behaving arc is usually only reacting to current variations
or inadequacies caused by a bad connection at the current
source, the ballast rheostat, the fuse blocks, or in the
lamp, itself.
The heat of the arc is very bad for the wiring inside
FOR CURRENTS FROM
75 TO 90 AMPERES
90 TO 110 AMPERES
110 TO 135 AMPERES
FOR RUNS UNDER
15 FEET
USE WIRE SIZE
• 3RH
• 2 RH
" I RH
FOR RUNS OVER
15 FEET
USE WIRE SIZE
Courtesy Strong Electric Corp.
FIG. 2 — A current-controlling ballast rheostat and a lamp-
house table switch are absolutely necessary in each arc -lamp
circuit powered by a motor-generator set. Rectifiers, on the
other hand, require no heat-producing, current-wasting
ballast. Many rectifier manufacturers also recommend elimi-
nation of the usual table switch, the current being turned
on and off at the rectifier, either directly or by means of
a relay button at the lamp.
International Projectionist March 1963
Binding post tightened /
for better contact
ndin^-
post lu£
FIG. 1 — An electrical binding post should be tightened se-
curely in order to insure good electrical conductance. Note
how the contact area of a round wire (shown in cross-sec-
tion) is gready increased by squeezing it out of shape
when the binding post nut is tightened. A sufficiendy large
contact area is best established by use of a washer-shaped
binding-post lug. Insufficient contact may offer enough
resistance to the flow of current to develop heating and
"burning" of the connection. This is especially true of arc-
lamp circuits because of the heavy currents involved.
the lamphouse. The flexible stranded-wire leads are espe-
cially liable to deterioration. The individual copper
strands are rather fine, and consequently expose a large
total surface to the oxidizing influence of the air. Badly
oxidized wires offer increased resistance to the flow of
current, and hence hasten their own destruction by
heating up.
Flexible wires will last for many years if large
enough to carry the current without heating, but may
in some cases deteriorate rapidly in a hot, poorly venti-
lated lamphouse. (Another good reason to heed the
manufacturer's advice on lamphouse ventilation ! ) Ex-
amine the arc leads in each lamphouse to make sure that
they are stiff and springy. If the individual strands are
dark brown in color, and seem to be brittle and crumbly
when bent sharply, the wiring should be replaced.
The carbon-holder or feed-head binding posts should
be examined several times a year for evidence of loose-
ness or corrosion. Lugs and other contact surfaces
should be polished with extra-fine, or No. 00 sandpaper,
and the binding-post nuts brought up tight when re-
placed. A loose contact "burns" and fails to transmit the
power properly.
Never use emery paper or cloth for polishing or
cleaning electrical contacts. Emery dust conducts current
to a slight extent. Sandpaper is safe because quartz sand
( unless molten ) is a non-conductor of electricity.
Inasmuch as the same number of amperes flow in
all parts of a circuit, the connections should also be
clean and tight at the generator or rectifier terminals, the
ballast rheostat, and at all fuse blocks and switches. In
cases where the binding posts are so badly corroded that
the lug nuts cannot be loosened without damage, a few
drops of kerosene and thin lubricating oil applied to
the binding post and left on for several hours often
works miracles.
The carbon-holding jaws of simplified HI lamps and
the contacts of rotating-positive HI lamps should normal-
ly never be filed or sandpapered. Filing roughens them
and may get them "out of true" or spoil the fit. Rough-
ened metal, by the way, oxidizes more rapidly than
smooth, highly polished metal.
Carbon holders are usually made of special heat-
resistant bronzes; and certain high-powered lamps have
water-cooled contacts of pure silver, which is the best
conductor of electricity known. The dull brownish color-
ation produced by a microscopically thin film of copper
oxide (or silver sulfide) on the surface of the metal
need cause no concern, and should not be removed.
It offers no measurable resistance to the passage of
current; and its formation is a normal occurrence. The
copper commutator bars of motors and generators are
5.
considered to be in good condition only when this red-
dish-brown oxide film is present!
Generators Good, But Wasteful
Motor-generator sets are still retained in many the-
atres using simplified HI arc lamps. Motor-generators
have the advantage of delivering extremely smooth direct
current relatively unaffected by AC line-voltage fluctu-
ations. This is important in neighborhoods where the
main current is poorly regulated. But motor-generators
are noisy, they are relatively costly to purchase and to
maintain in good working order, and they require the
use of current-wasting ballast rheostats. Even though a
motor-generator set, considered by itself, may have the
same 85% power-converting efficiency of a selenium,
tube-type, or silicon diode rectifier, it is much less effi-
cient than a rectifier in actual service because of the
unavoidable ballast losses.
The voltage drop across a ballast rheostat (when
the arc is burning normally) is the difference between
the generator output voltage (indicated by the volt-
meter in the control cabinet) and the actual voltage
drop across the arc. This difference should never be less
than 15 volts for the smallest simplified HI ("Suprex")
arcs, or less than 25 volts for the most powerful rotating-
positive HI arcs. An excessively large ballast drop insures
stable burning of the arcs, but also wastes electric
power unnecessarily.
In general, the ballasts should be adjusted so that
the arcs burn at their maximum rated current or, better,
at 2 or 3 amperes above the rated maximum. Then the
generator voltage is slightly decreased by means of the
field rheostat (usually located in the generator control
cabinet) until the current drawn by the normally burn-
ing arc is at the desired value in the current range
recommended by the carbon manufacturer for the size
of trim being used. The voltage drop occasioned by the
very slight resistance of the transmission line is so small
that it may be ignored.
"Creeping" Arcs in Suprex Lamps
Certain lower-priced simplified HI arc lamps have
a fixed positive-negative carbon feed ratio. The lamp
manufacturer has assumed that the positive carbon will
be consumed just so much faster than the negative car-
bon, and accordingly has threaded the carbon-feed shafts
Positive
electrode
UXl
ijiary^
mirror
?1
Film
aperture
Negative
electrode
PIG. 3 —The optical system of a xenon-bulb light source
is similar to the optics of a carbon-arc reflector lamp. The
spherical auxiliary mirror, not used in a carbon arc lamp
except the "blown-arc" type, nearly doubles the luminous
output of the lamp and smoothes the screen illumination
by superimposing an inverted image of the xenon arc upon
the light source, itself.
Unlike the carbon arc, which emits most of its light
from a crater in the tip of the positive electrode, the xenon
lamp emits its light from the gaseous discharge between
two tungsten electrodes.
r
+-
Rectifier
iii
3-phase A.C.
\ ,\ Xenon
bulb
1 — r
Igniter
' I Combination con->
© trol pushbutton
for igniter and
rectifier.
FIG. 4 — The carbon arc has movable electrodes which are
brought together and then separated to establish a current-
conducting arc, but the xenon bulb has fixed electrodes. The
low-voltage, high-amperage current needed for this lamp
cannot pass until a conducting path has been established
through the xenon gas by a high-voltage spark. This is
furnished by an ignition device which automatically cuts
in the low-voltage operating circuit the moment a spark
jumps between the electrodes. Actual operation of a xenon
projection lamp is extremely simple — just press a button!
No optical adjustments are necessary once the long-life
bulb has been installed and "lined up".
to correspond with this particular ratio. Actually, this
ratio (whatever it may be) obtains only at one definite
arc current. Other positive-negative feed ratios are ob-
served at other arc currents even when the same trim
of carbons is used.
If the current be decreased or increased in a lamp
having a fixed feed ratio, the positive-negative burning
ratio will be changed. No way is provided for the pro-
jectionist to compensate for the change in such a lamp:
all he can do is make sure that the current is maintained
at a value which will hold the arc in focus.
Suppose that the current is increased for some reason,
perhaps to get a brighter picture or to get a whiter,
more efficient light. The rate of positive consumption
then increases over the rate of negative consumption
relative to the feed ratio at which the lamp was set at
the factory. What happens? The entire arc creeps out of
focus away from the mirror, and the light on the screen
gradually becomes dim and bluish. The reverse happens
when the current is decreased, perhaps for the purpose
of saving money on carbons — a false economy, by the
way. The positive burning rate decreases over that of
the negative, and the entire arc creeps toward the mirror.
The screen light then becomes dim and brownish.
If a radical increase or decrease in arc current is
desired in a fixed feed-ratio Suprex lamp, it is best to
use the next larger or smaller trim of carbons. This is
sometimes possible without having to replace the carbon
holders, but not always. At all events, we suggest that
the size of trim chosen be burned as close to the
maximum rated current as possible in order to get the
brightest, whitest light. It has been determined by actual
test that a 7- and 6-mm Suprex (copper-coated) trim
burned at 50 amps, gives fully 30% more screen light
than an 8- and 7-mm Suprex trim burned at 60 amps!
There is more leeway in the choice of arc currents
for burning any particular Suprex trim if the lamp has a
separate feed control for the negative carbon. Even so,
it is best to hang pretty close to the maximum rated
current for the carbons in order to obtain the kind of
light that pleases the cash customers.
Arc Gap in Rotating HI Lamps
Higher-powered HI arc lamps — those having rotating
positive carbons — respond to current variations in a
(Continued on Page 11)
International Projf.ctionist March 1963
A Scene From America's Projector Carbon Center.
Testing for arc consumption and light distribution
"Every day is 'double -feature' test day at
our projection booth in Fostoria, Ohio"
Bill Brenner
You're looking into the motion
picture industry's most unusual
projection booth. We run the
same "double-feature" every
day —fifty-two weeks a year. Our
program covers two important
phases of "National" projector carbon produc-
tion — the testing of arc consumption and light
distribution. Their ultimate results are to help
you obtain the finest picture quality!
Tests are conducted on representative sam-
ples from every lot of projector carbons manu-
factured in Fostoria, Ohio. This specialized
says BILL BRENNER
National Carbon Sales Engineer
quality control effort not only pays dividends
to the theatre owner in projection carbon econ-
omy, but assures movie patrons the best-lighted
indoor or outdoor presentations that carbon
dollars can buy !
Quality manufacturing and precision testing
are only a part of the "National" projector car-
bon story. For 45 years National Carbon has
backed theatre owners with the industry's most
dependable technical service.
Our Sales Engineers are equipped with to-
day's most modern test devices ... to assure you
maximum light efficiency on your screen.
Contact
Mr. National Carbon * »**"
UNION
CARBIDE
"National" and "Union Carbide" are registered trade-marks for products of
NATIONAL CARBON COMPANY
Division of Union Carbide Corporation • 270 Park Avenue • New York 17, N. Y,
In Canada: Union Carbide Canada Limited, Toronto
The Cover Story:
Local 228 at the Valentine Theatre
IATSE Local #228 had been organ-
ized but one year when Daniel
Rehklau. shown at the left in the
cover illustration, became a member
in 1912. For the next half century he
worked in the booths of many Toledo
theatres. In fact, he has never oper-
ated outside that city. During the
last 12 years he has been at the
Valentine Theatre, until recently a
Loew's operation.
He particularly recalls when he was
employed at the Vita-Temple, the
first theatre outside New York City
to present talking pictures.
With Rehklau in the Valentine
booth is Art Partis, business agent of
Local 228. Although he has worked
in Toledo theatres since 1945, he has
just joined the Valentine crew.
These craftsmen are shown operat-
ing the recently installed new low
current Strong Electric Corp. pro-
jection arc lamps using a standard
20" by 11 mm carbon trim. These
lamps provide what both the men
claim to be by far the most evenly
distributed screen light they have ever
enjoyed. Actual light readings at the
Valentine have proven a distribution
of 87% over the 40-foot screen.
Rehklau also says that these lamps
are the easiest to operate of any he
has had during 50 years as a pro-
jectionist.
Controls on the lamps are "self-
suggestive," providing ease of ad-
justment. The lamps have 18-inch
reflectors and improved carbon
imager screen and carbon control
system.
The Valentine is owned by Jack
Armstrong, who operates 23 theatres
in Northwestern Ohio. Armstrong
was recently elected president of
Allied States. He got his start in the
theatre projection business as an
operator in the Cla-Zel Theatre, Bowl-
ing Green. Ohio.
Born in Napoleon, Ohio, he started
there as an usher 35 years ago in
1928, and worked up to management
with Clark M. Young. Later went to
work for Butterfield as manager in
1932 at Jackson, Mich., and manager
for the Schine Circuit.
Mr. Armstrong was associated with
Carl Schwyn for 14 years in opera-
tion of theatre circuit as general
manager, booking and buying, and
subsequently a partner upon Mr.
Schwyn's retirement from theatre
operations and purchased the balance
S
Jack Armstrong
of theatres. The circuit's headquar-
tered in Bowling Green, Ohio, oper-
ates 11 drive-ins and 14 indoor
theatres, all located in northwestern
and central Ohio and served from the
Cleveland exchange area.
Additionally he is a director and
vice president of Theatre Owners of
Ohio, member of Variety Tent No. 6,
Cleveland, member of Bowling Green
Country Club, director of Downtown
Toledo Associates, also member and
past president of Bowling Green
Chamber of Commerce, and member
of Port Clinton Yacht Club.
His home is in Bowling Green. He
married Dorothy Wilken in 1935;
they have one married daughter and
Jack is the proud grandfather of two
young grandsons. iJP
C. W. Handley Retires
From National Carbon
NEW YORK— Charles W. Handley,
recognized as an authority on carbon
arc light sources for the motion
picture industry, has retired after 42
years of service with National Carbon
Co., division of Union Carbide Corp.
Mr. Handley had been special rep-
resentative for National Carbon in
Los Angeles for a number of years.
In addition to his work with motion
picture theatre owners and managers
on the use of carbon arcs for projec-
tion, Mr. Handley devoted a great
deal of time to motion picture studio
lighting, and was the author of sev-
eral technical papers on the subject.
He was active in the American
Society of Cinematography, and was
recently designated a Life Fellow in
the Society of Motion Picture and
iP
Television Engineers
Jamestown Local
Celebrates Its
50th Anniversary
JAMESTOWN, N. Y.— Local 266
of the IATSE is celebrating its 50th
anniversary as a member of the mo-
tion picture projectionists union in
conjunction with the New York State
Association of Motion Picture Pro-
jectionists spring meeting.
Tentatively, the program will be-
gin with registration at the Hotel
Jamestown at 10 a.m. Monday, May
20. Following luncheon, an educa-
tional meeting will be held at 2 p.m.,
with the ladies' auxiliary planning a
fine tour. A cocktail hour will pre-
cede the banquet in the hotel's Cry-
tal Ballroom at 6:30 p.m., and there
will be entertainment during and
after the banquet.
R. Monaco, business agent of Local
337, Utica, N. Y. emphasizes that
the ladies' tour will be through the
Union-National Furniture Co., one of
the top high-grade furniture plants in
the country. They specialize in Italian
and French Provencial Furniture.
Here the group may see the machin-
ing and the assembling of these fine
products up to their completion.
Those driving to Jamestown will
be in for a spring treat, Mr. Monaco
points out. Take New York State
throughway to Westfield. (For scenic
Route) Take Route 17 or 17J. Either
route goes on one side of Beautiful
Chautauqua Lake. Route 17J passes
Chautauqua Institution, and those ar-
riving on Sunday may go through the
gates without charge and drive
around the grounds, as the season
is not yet open. iP
Ballantyne to Distribute
Norelco FP-20 Projector
NEW YORK — North American
Philips Co. Inc.. and Ballantyne
Instruments & Electronics Inc., elec-
tronics division of ABC Vending
Corp., have signed an agreement
whereby Ballantyne will become the
distributor for the Norelco Model
FP-20 35mm projector, and Ballan-
tyne in their factory at Omaha, Neb.,
will make components for the Norelco
35mm projector, under the specifica-
tions of Norelco.
The agreement was announced
jointly by Neils Tuxen, general man-
ager of the motion picture equipment
division of North American Philips,
and bv J. Robert Hoff, executive vice
president of the Ballantyne Co.
The agreement calls for the pur-
chase by Ballantyne of a number of
Norelco 35mm projectors, and Norel-
co will purchase from Ballantyne
International Projectionist March 1963
®
assemblies and sub-assemblies for its
projector line.
Ballantyne will sell the FP-20 pro-
jectors to indoor theatres and the
FP-20 projectors will be adapted to
high intensity arc lamps for use in
drive-in theatres.
The Norelco FP-20 has many ad-
vanced features, among which are
claimed the smallest number of parts
in the film path, simple driving mec-
hanisms, curved and water-cooled
film gate. iP
Technical Equipment
Set For SMPTE
Convention
NEW YORK — Displays of new
film and laboratory equipment will be
an important feature of the 93rd
Convention of the Society of Motion
Picture and Television Engineers, to
be held April 22-25, at the Traymore
Hotel, Atlantic City, N. J.
According to SMPTE Exhibit Com-
mittee Chairman, Dennis Kealey, of
Reevesound, Inc.. L. I. City, N. Y.,
the exhibition area will be comprised
of 40 booths. Manufacturers will
show: motion picture and television
devices; film laboratory test, con-
trol and processing tools; instru-
ments for time lapse and high and
ultra-high frequency photography ;
means of making and using 8mm
small format motion pictures; ap-
paratus used in special motion picture
and television technology, data re-
cording and data reduction; color
and black-and-white television cam-
eras and television tape and film re-
cording equipment.
Comprehensive
Canon Camera Co.
Corp. of America,
Ltd. (Canada), Camera
Service Corp.,
Japan ) . Arriflex
Houston-Schmidt
Mart, Inc.,
Hi-Speed Equipment, Inc.. Lipsner-
Smith Corp.. S.O.S. Photo-Cine-
Optics. Inc. and Motion Picture
Enterprises, Inc., are among the
manufacturers who have already an-
nounced that they will show their
equipment at the convention. iP
MONTHLY CHAT
{Continued from Page 3)
Tip To Help Will
Rogers Hospital
I.A.T.S.E. locals around the coun-
try collect scrap carbons with the
copper salvaged and the money do-
nated to the Will Rogers Memorial
Hospital.
If the projectionist would strip the
carbons, the salvage operation would
be more efficient. Also, it would help
the collectors — who volunteer their
time picking the '"scrap-n-drippings"
from theatre projection booths. iP
International Projectionist March 1963
BalCOLD
REFLECTORS
CUT HEAT
IN HALF
Read this Hollywood test report. "Film gate heat at 1.85 aperture,
is 280° F. with silvered reflectors, but only 140° F. with BalCOLD."
And look at the benefits when BalCOLD Reflectors cut heat in half:
NO FOCUS DRIFT. As much as 5400 feet of film have been run
without refocus. Cooler film gate cuts down film bulge — keeps con-
stant focus.
GREATER DEPTH OF FIELD. Less film bulge means better back-
ground resolution, color fidelity, and clearness of detail.
NO END-OF-REEL CONTRACTION. Lens and projector parts
can't cool off and contract (thus changing focus) because BalCOLD
Reflectors don't let them get hot enough to expand!
NO EMULSION PILE-UP. Green film never gets hot enough to
leave emulsion coatings on film tracks and shoes.
LONGER REFLECTOR LIFE. Theatres all over the country report
up to 17 months and more constant, top-quality performance.
LONGER FILM LIFE. Theatres report film life doubled with
BalCOLD Reflectors. Means a lot when prints cost up to $10,000 ea.
Next time you replace silvered reflectors, replace them with
BalCOLD — the only reflector whose proven contribution to the
advancement of motion picture projection has won for its designers
the highly regarded technical award from the Academy of Motion
Picture Arts and Sciences.
BAUSCH & LOME ^
BAUSCH & LOME
61639 Bousd. Sr.,
INCORPORATED
Rochester 2, N. Y.
□ Send me BalCOLD Data Brochure E-35.
Name .
Theatre
Address
City
Zone State
Century Has New Power Amplifier
Century Projector Corp. announces
new and exclusive additions to their
line of all-transistor 50 watt power
amplifiers, which now have built-in
insurance against failures from exces-
sive overloads or other abnormal
operations.
Also engineered into these 50 watt
amplifiers are four special indicator
lamps (shown in the illustrations)
for observation of any overload, low
impedance or short circuit conditions
in the output circuit.
The red indicator lamps light up
when an overload (volume) or some
other abnormal condition develops or
exists. This visual observation warns
the projectionist or service engineer
of any abnormal condition which may
be present. The lamps will automati-
cally go off when the difficulties have
been cleared.
If during a performance someone
or something introduces a short cir-
cuit into the speaker system or the
power amplifier output, the indicator
lamps will light up. The lamps will
go off when the abnormalities are
removed.
The Century 50 watt all-transistor
power amplifier with indicator lamps
plus plug-in provisions ( another
Century exclusive) has been coded
W6-13.
% %
/"""**
NEW POWER AMPLIFIER— The new Century Projector Corp. 50 watt
power amplifier is shown here, featuring indicator lamps to instantly pinpoint
system malfunctions. One view of the equipment shows the open top of the
amplifier, the other indicator lamp viewing ports and plug-in provision, described
in the article.
Davee Says Theatres Can
Own a Toll-TV System
NEW YORK— Larry Davee, presi-
dent of Theatre Equipment & Supply
Manufacturers Assn., said that
TESMA has a patented Pay-TV
system and it will be available to any
theatre or group of theatres interested
in research and development of the
patent.
According to the patent, Davee
stated, the system ties in with the
existing community antenna — systems
in areas where signals from a regular
broadcasting TV station cannot be
received in homes in the area — with
an unused TV channel in the area.
Davee said that the equipment can
be manufactured for sale to theatres
at a "very reasonable" cost, followed
by amortization of research and
development costs.
If a theatre or theatres were in the
area of existing CATV system, the
theatre owner could have home sub-
scribers for his first run pictures, if
he were to set up a pay-TV station.
Thus, a first run theatre in any
10
area could widen its audience and
be paid for it to the extent of the
number of homes that are subscribers
to the local community antenna
system.
It is estimated that there are now
licensed by the FCC as many as 3,000
CATV systems, each having hundreds
and some case thousands of homes in
the area subscribing to the system.
The CATV System
For the benefit of projectionists
who are not familiar with it, a Com-
munity Antenna Television system
exists in areas where signals from a
regular broadcasting television station
cannot be received in the home with-
out a re-broadcast over wires of a
CATV system. The CATV antenna, a
high tower or in many cases perched
atop a mountain, picks up the regular
broadcast from the originating sta-
tion, amplifies it and sends it by
wire into subscribing homes, which
pay for the service usually on a
monthly basis. In some areas there
are as many as seven channels avail-
able to subscribing homes.
In areas where this kind of system
exists, theatres may now or in the
near future make a deal with the
CATV system, whereby the theatre
pick-up system will be enabled to
channel exactly what is on its screen,
over the wires and into subscribing
homes for a fee.
A Theatre Opportunity
There are many systems (electroni-
cally ) that will enable the theatre and
its CATV cooperating system to col-
lect their money from subscribing
families. These charges would be in
addition to regular monthly service
fees under which the CATV system
normally makes its money.
"It can be seen upon examination of
the patent that there is no other way
in existence, and none in the foresee-
able future, under which theatres can
supply television into homes, without
the expenditure of enormous sums of
money, except under the new patent.
Under the projected, patented sys-
tem now in the hands of TESMA for
disposition, theatres are in a position
to compete economically, and with
considerable profit to themselves,
with any Pay TV system now on the
market," Mr. Davee says. iP
Eugene Levy Head of
Camera Equipment Co.
NEW YORK— Directors of CECO
Industries, Inc. have elected Eugene
H. Levy president of Camera Equip-
ment Company, Inc., major operat-
ing subsidiary, it was announced by
Robert B. Bregman, board chairman.
The company is the world's larg-
est rental and sales service organiza-
tion serving the motion picture and
television industry with professional
equipment used for theatrical and TV
production. It maintains facilities at
Hialeah. Fla.. Hollywood. Cal., New
York City and Syosset, N. Y.
Mr. Levy succeeds Frank C. Zuck-
er, who retires to become president of
Local 644, International Photograph-
ers of the Motion Picture Industry.
The new Camera Equipment presi-
dent has been associated with the firm
since its founding in 1936. Prior to
assuming his new post, he was vice
president for sales and national direc-
tor of advertising and promotion.
Mr. Levy is a member of Local
644, International Photographers of
the Motion Picture Industry, and The
Pioneers of the Motion Picture In-
dustry.
He also holds membership in the
Society of Motion Picture and TV
Engineers, the National Audio Visual
Assn. and the Industrial Film Pro-
ducers Assn. iP
International Projectionist March 1963
LAMPS AND POWER
from Page 6
different way. Most reflector lamps of this type have
an automatic optical crater-positioning device which
insures that the positive crater remains in the focus of
the mirror at all times. If the current supplied to the
trim is too low, the arc gap becomes gradually shorter
than normal; if the current is too high, the gap lengthens.
Some lamps have independent negative-feed controls:
others have positive-negative feed rate selectors for a
number of different trims and currents.
The optimum length of arc gap (the distance be-
tween the tips of the two carbons) is about % inch for
arc currents between 40 and 50 amps., % inch for
currents between 60 and 120 amps., and % inch for
currents between 130 and 180 amps. A variation in
gap length not exceeding 1/16 of an inch does not
appear to be important. However, the use of an ex-
cessively long arc gap may allow the arc to waver,
causing the screen illumination to flicker in an an-
noying manner.
To sum up: If your arcs burn in an unstable man-
ner, with erratic feeding of the carbons, check the
electrical system before blaming the lamps or the car-
bons for the difficulty. A cracked carbon will certainly
give trouble, but damaged carbons can usually be dis-
covered by inspection. Water does no permanent damage
to carbons, but they must be thoroughly dry when
burned. It is a good idea to keep a few dozen carbons
under the lamphouse or in some other warm place to
insure a supply of dry carbons.
Check the System Methodically!
How to go about checking the electrical system?
A measurement of arc amperage and voltage comes
first. Arc voltage drop is measured with a DC voltmeter
across the lamp lead wires or table switch when the
arc is burning normally. This voltage is less than
generator output voltage (as indicated by the voltmeter
in the control cabinet ) . and should be 15 volts less for
the smaller lamps and about 25 volts less for the larger
ones. This voltage difference happens to be the ballast-
rheostat voltage drop spoken of earlier.
An ammeter is ordinarily present in the system,
either in the generator control cabinet or in the lamp-
house, itself. An ammeter is absolutely essential for
keeping the projectionist informed as to the current
being drawn by his arcs.
All connections everywhere in each arc circuit are
then checked for evidence of corrosion, looseness, un-
due heating, etc., special attention being given to the
wires and terminals exposed to the heat of the arc
in each lamphouse. Perfect performance of the arcs
is not guaranteed by a perfect electrical system, of
course, — the lamp and carbon control and feed mech-
anism may be worn, out of adjustment, clogged by
dust, incrusted with grime, or improperly lubricated.
But no matter what the age or physical condition of the
lamps may be, satisfactory burning of the arcs is man-
ifestly impossible unless the electrical factors to which
the carbon arc is extremely sensitive are all in A-l order.
iP
There is a FIRST BEST in Anything!
In ARC LAMPS
IT IQ TUP ADTlfikllY IMTEAPATEn
I 1 I** 1 lib %f¥^ I l%MlHk 1 1 lH 1 Ea^^l%#%l cy
C S. ASHCRAFT'S
^^^^■■HB^m^HmnBEI^^HHHBV (Paten
(Patent Pending)
Trademark registered and copyrighted. Patent applied lor.
The C. S. Ashcraft Mfg. Co., Inc.
36-32 Thirty Eighth Street, Long Island City, N. Y.
It does unheard of things in screen lighting. Such as ... up to
100% increase in screen side-lighting.
It works on any current from 78 to 115 amperes. It does it
on a single size positive carbon, 11mm in diameter.
It will exceed accepted industry standards in lighting an out-
door screen 52 feet wide. It is the answer to the ill-lighted
Drive-ln screen up to 95 feet in width.
It is a miserly brute in its operating expenses. Saves you up
to 50% in carbon costs.
Want proof? Call your National Theatre Supply Co. man. He
will prove the CORE-LITE worth in indoor or drive-in theatres
with existing screens and lenses.
International Projectionist March 1963
11
Letters to the Editor
Editor, IP
Dear Sir:
While making magnetic sound in-
stallations for various theaters in the
past few years I have become aware
of the great amount of confusion
among exhibitors, distributors, and
the public in general about current
motion picture sound. For instance;
one exhibitor of my acquaintance, on
the strength of three mag-optical
prints in a row culminating in the 35
mm. release of "Ben-Hur," invested
several thousand dollars in stereo-
phonic equipment in 1960. In 1961
he was not able to get a single mag-
netic print and has had only one in
1962. In this respect the exhibitor is
at the mercy of the distributor who is
often equally uncertain as to which
pictures are available in stereo.
Here are some questions I have
which might serve as a guide to a
future article on soundtracks in your
magazine.
1. Is magnetic stereo sound being
soft pedaled or phased out by the
major producers or is there still a
general enthusiasm for this type of
sound?
2. Where can one obtain a listing
of the type of sound that is avail-
able on current and future releases?
In this regard the various trade pub-
lications such as Greater Amuse-
ments, Variety, Box-Office, Exhibitor,
and even the press books and adver-
tising copy carry no mention of stereo
sound when such is available.
3. How is six-track sound re-mixed
to four-track and single track sound
for the 35 mm. version?
4. How much actual stereo is con-
tained in current release tracks, that
is, is only music recorded using three
channels with dialogue and effects
recorded mono and then shifted to
follow the action during re-record-
ing?
5. Are there any general rules that
producers use in determining what
material to put on the fourth or
effects track?
Sincerely,
William E. Lobb
* * *
The views of this writer anent the
present-day neglect of magnetic
stereophonic sound for CinemaScope
motion pictures closely parallel those
implied by Mr. Lobb. In an article
published in the February 1962 issue
of INTERNATIONAL' PROJEC-
TIONIST I wrote: "In view of the
demand for stereophonic sound, we
cannot refrain from wondering why
the great majority of movie producers
have so neglected the CinemaScope
magnetic sound process. The mag-
netic reproducers in thousands of
theatres remain idle most of the time.
ALLEN SMITH HONORED— Allen G. Smith of National Theatre Supply
Co., recently featured in an IP profile, is shown above receiving a presentation
from W. J. Turnbull, left, president of National Theatre Supply Co. On the
right, Arthur Baldwin, vice president in charge of export and New York op-
erations, looks on.
12
and in their failure to utilize fully a
stereosound system already at their
disposal, all too many movie moguls
are guilty of the shortsightedness for
which Hollywood is notorious."
To reply specifically to Mr. Lobb's
first question, we can say that the
neglect of stereosound by the major
producers is deliberate. The movie-
going public is far more enthusiastic
about stereophonic sound for pano-
ramic pictures than the producers,
themselves, appear to be. Hollywood
film producers have a well-known
tendency to consider immediate costs
rather than the quality of their
product or long-range results in the
theatre.
It might be assumed that the great
popularity of stereosound in the
home through the media of binaural
phonograph records, multitrack
sound tapes, and dual-channel FM
radio broadcasts would stimulate the
use of magnetic 4-track prints for
stereosound in the theatre. As things
actually turned out, producers began
to neglect movie stereosound from the
very moment that multichannel repro-
duction of music in the home soared
to the zenith of popularity.
CinemaScope stereosound admit-
tedly suffered from technical inepti-
tudes which proved distracting to
audiences, but some of the early
attempts in this sound medium were
pleasing and effective. We know that
optical-track recording is more ser-
viceable than magnetic for monaural
motion-picture sound, but the 4-track
magnetic process is more convenient
than multitrack optical for stereo-
phonic reproduction, and the extra
cost of magnetically striped prints is
not excessive. Nevertheless, the pro-
ducers seem unable to look beyond
the added costs to the realism of the
results and the benefits of patron
satisfaction. Stereophonic sound may
contribute little or nothing to stan-
dard non-anamorphic projection, but
it is a definite advantage to specta-
cular CinemaScope pictures in natural
color.
Question 2: There are not at pre-
sent any complete listings of the type
of sound available on current and
future releases. This lack is just
another example of the narrow-
visioned. dead-head policies of an
industry which goes on and on court-
ing financial disaster through a deli-
berate process of business stagnation.
Exhibitors' trade publications should
be pressured into obtaining and pub-
lishing this vital information, inas-
much as the thousands of theatre
owners who have gone to the expense
of installing stereosound equipment
have an indisputable right to know of
International Projectionist March 1963
Investment Opportunity
You are looking at a part of your employee benefit pro-
gram. It's part of your neighbors', too. And your suppliers'
and your customers' and your competitors'. It is there for
all Americans to enjoy.
A healthy economy is a bulwark of the freedom it sym-
bolizes— and of our freedom to enjoy it.
American businessmen like you can protect the invest-
ment you have in this benefit program by promoting the
Treasury's Payroll Savings Plan for U.S. Savings Bonds.
It makes for a strong America and a sound America. And
it engenders a sense of thrift and independence and con-
servation that helps us all to fathom the real significance
of monuments like that set in the beautiful Black Hills.
When you bring the Payroll Savings Plan into your
plant — when you encourage your employees to enroll — you
are investing in the most precious of America's natural
resources. In the vastnesses of its mountains and plains
and coasts that offer physical and spiritual recreation to us
and our children. You are investing in the heritage and the
future of America. In freedom itself.
Don't pass this investment opportunity by. Call your
State Savings Bonds Director. Or write today to the
Treasury Department, U.S. Savings Bonds Division,
Washington 25, D.C.
in your plant... promote the PAYROLL SAVINGS PLAN for U.S. SAVINGS BONDS §§||)|)
°«c s[(^
The U. S. Government does not pay for this advertisement. The Treasury Department thanks, for their patriotism. The Advertising Council and this magazine.
INTERNATIONAL PROJECTIONIST
International Projectionist March 1963
13
the availability of all stereophonic
releases — what few there are.
Question 3 : Although not the usual
procedure, a 6-track stereophonic re-
cording can be converted to a 4-track
CinemaScope recording by omitting
tracks 2 and 4 (left center and right
center channels ) and transferring the
remaining four tracks to the four
CinemaScope tracks. By taking
special pains to insure accurate phas-
ing, however, tracks 1 and 2 and
tracks 4 and 5 of the 6-track record-
ing can be electrically combined for
tracks 1 and 3 (left and right chan-
nels ) of the CinemaScope recording,
none of the six tracks then being
omitted.
A 4-track CinemaScope recording
can be converted to a single monaural
track by electrical combination of all
signals, the fourth "surround" sound-
effects track usually being omitted. A
more common method is to utilize
track 2 (center channel) alone for
the monaural transcription. This is
made possible by the admixture of
some sound from the left and right
channels ( tracks 1 and 3 ) in the
center-channel track. (The intro-
duction of side-channel signals into
the center-channel track has been
criticized because it decreases the
sound-separation, or directional, ef-
fect.)
Question 4: Most movie stereo-
phonic sound is recorded monaurally
in a single channel and afterward
"pan-potted" by a sound-following
technique to obtain the effect of direc-
tional sound in the four Cinema-
Scope channels. In this case, the
monaural optical-track version is
transferred directly from the magnetic
single-track original recording.
About the only actual stereophonic
recording made with a multiple-
microphone setup in CinemaScope
pictures involves musical sequences
in which an entire orchestra is photo-
graphed. Because a multiple-mike
setup is acoustically "tricky" and
rather time-consuming for the studio
sound technicians, the pan-pot method
of faking stereosound from a single-
track original recording is nearly al-
ways used for action-and-dialogue
scenes. The pan-pot method saves
time and money and simplifies the
"sound-mixing" operation wherein
the original records are combined
with effects and background music.
In general, the pan-pot method
gives a stereophonic effect which is as
good, and sometimes better, than is
obtainable by multiple-channel origi-
nal recording. Trouble in encountered
in scenes where players located at op-
posite sides of the screen speak simul-
taneously, but even these difficult sit-
uations can often be faked reasonably
14
well by use of the center channel.
When perfection is mandatory, how-
ever, complex scenes of this nature
must be set up for multiple-channel
recording on the set.
Question 5: The general rules gov-
erning material to be put on the
"surround," or "effects," track reside
mainly in the artistic intuition of the
director and sound recordist. Natur-
ally, all sounds which should emanate
off screen are placed on this track —
the sound of an unseen orchestra, of
a roiling sea, of a distant locomotive
whistle, or the voices of off-screen
actors. A novel use for the fourth
track involves what may be termed
"psychological audio," that is to say,
voices and other sounds heard only
in the mind of a character in the
story.
The use of the fourth track is there-
fore largely a matter of artistic crea-
tivity which strives to produce dram-
atic effects in the photoplay and an
emotional response in the audience
through the medium of sound which
comes from speakers located at a
distance from the screen.
—Robert Allen Mitchell
iP
Trans-Lux To Open
New Theatre in April
A new theatre, "The Trans-Lux
East," located at 58th St. and Third
Ave., will open during the first part
of April, it is announced by Thomas
Rodgers, vice president of Trans-Lux
Corp. Said to be the finest theatre
ever to be constructed in Manhattan.
The architect, planned a "theatre with
a personality," and the results are
both striking and dramatic. Total
investment for the 600-seat house, will
be in excess of $500,000.
An unusual feature of the theatre
will be a viewing window in which
the heart of the theatre, the sound
and projection equipment, may be
seen by the public.
The Trans-Lux East is the first
theatre ever to be constructed as part
of an office and apartment building.
iP
Eastman Kodak Sales
Top Billion Mark
ROCHESTER, N. Y.— William S.
Vaughan, president of Eastman Ko-
dak Co., has announced that company
sales and earnings topped the billion-
dollar figure for the first time in its
history last year.
In a report also signed by Albeit
K. Chapman, board chairman, Kodak
disclosed that sales of $1,056,072,473
were 7% higher than the $989,171.-
969 reported for the previous year.
Net earnings were $140,342,438, or
almost 8% above the 1961 total of
$130,203,447 for 1961. The total was
figured at $3.64 per share as com-
pared to $3.38 per share in 1961.
The report also disclosed a favor-
able cash position with working capi-
tal available totaling $412,000,000.
up $25,000,000 in the last year. In-
ventories were $18,700,000 higher
than at the close of 1961. iP
POLY GROOVE PULLEY
PROJECTOR MAIN DRIVE SHAFT-
POLY V MOTOR DRIVE BELT
STABILIZER SHAFT
(FLYWHEEL OMITTED)
MOTOR
MOTOR MOUNTING BRACKET-
LOWER MAGAZINE
PROJECTOR DRIVEN GEAR
(VERTICAL SHAFT)
RECT DRIVE FLEXIBLE
COUPLING
DIRECT DRIVE SHAFT,
BALL BEARINGS AND
BRACKETS
SOUND SPROCKET SHAFT
TAKE UP BELT
ADJUSTING ARM
TAKE UP BELT
PROJECTOR MECHANISM ' SOUND REPRODUCER
DIRECT-DRIVE
DIRECT DRIVE projector mechanisms and sound reproducers have been
made available by Century Projector Corp. Detailed in this illustration, the
mechanisms were described fully in the February issue of IP. The new Century
drive is said to be easily adapted for interlock or synchronous operation. A
timing belt drive between motor and reproducer is no longer necessary, it is said.
INTERNATIONAL PROJECTIONIST MARCH 1963
CINERAMA DOME THEATRE revealed by Nicolas
Reisini, Cinerama, Inc. president. This radically-new movie
theatre is based upon the "geodesic dome" concept.
Revolutionary New
Theatre Idea Revealed
A radically-new design for motion
picture theatres has been disclosed to
a special meeting of more than 100
leading movie exhibitors by Nicolas
Reisini, president of Cinerama, Inc.
The new Cinerama theatre is based
upon the "Geodesic Dome" principle
developed by R. Buckminster Fuller.
A model-and-plans of a typical Cin-
erama Dome Theatre of 1,000 seats,
to be constructed of precast concrete,
was displayed by Mr. Reisini, who
stated that the new Cinerama theatre
will cost approximately $250,000,
said to be one-half as much as a
conventional motion picture theatre
of comparable size, and it will take
half as long to construct.
Cinerama is making its patented
designs and blueprints available to
selected exhibitors desiring to build
these unique Cinerama showcases in
the U. S. and Canada.
The revolutionary new motion pic-
ture theatre presents a new approach
to geodesic dome design and the use
of relatively - inexpensive precast con-
crete as a building material. The
designs were produced by Geome-
tries, Inc., Cambridge, Mass. archi-
tectural and engineering firm, in
association with Cinerama's own
technical staff. Also present at the
meeting was John J. McNamara.
prominent theatre architect.
The model of the Cinerama Dome
Theatre shown to the assembled
movie executives was of a 1,000-seat
theatre approximately 140 ft. in dia-
meter and 52 ft. high. It is assembled
from some 300 precast concrete
panels fitted together to form the
dome shape.
Reisini stated that "Cinerama's
goal is to see that at least 300 of these
dome theatres are built in the U.S.
and Canada in the next two years,
and that an equal number are con-
structed abroad. The new and econ-
omical geodesic dome theatre will
also enable exhibitors to bring Cin-
erama to many smaller localities
which hithertofore could not afford
to sustain a large house."
He added, "We hope to greatly en-
large the family of Cinerama exhibi-
tors this way. The philosophy behind
Cinerama's thinking is that we must
concentrate not only in producing the
best Cinerama films possible, but
also in seeing that these films are
exhibited in the most appropriate new
theatres throughout the world."
The dome is constructed by bolting
the panels together flange-to-flange.
Resilient anchor plates are used for
mounting the dome onto the founda-
tion. After assembly, the joints
between the panels are packed with
an expoxy mortar. This transfers the
loads between panels and forms a
watertight seal. After the dome is
assembled, an interior coat of sprayed
BRIGHTER LIGHT
LONGER BURNING
SHARPER PICTURE
Free Test Samples
n*w*
F Wf ■» » 1IWVT1 W» » f » ■ WF»
asbestos plaster is applied which pro-
vides thermal insulation, acoustical
absorption and fireproofing.
The fire-resistant characteristics of
concrete make it particularly advant-
ageous for theatre use.
The geodesic dome is the creation
of R. Buckminster Fuller, an archi-
tect-engineer, mathematician and
philosopher whose work is based
upon an analysis of the principles of
structure as found in nature. The
design is based on mathematical
principles embodying force distribu-
tions similar to those found in atoms,
molecules, and crystals. It is consi-
dered one of the lightest, strongest
and most economical of all construc-
tion forms.
A geodesic dome has the structural
advantage inherent in a spherical
shape, which presents an almost ideal
configuration for withstanding wind,
snow and dead loads. Applied loads
are transferred in an arc manner
(Continued on Page 18)
$2k
CURTAIN CONTROLS,
TRACKS and SPECIAL
OPERATING DEVICES
VALLENjnc.
AKRON 4, OHIO '
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projection
equipment
Available from
leading theatre supply
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North American Philips Co., Inc.
Motion Picture Equipment Division
100 E. 42nd St., New York 17, N.Y.
WUUHC
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International Projectionist March 1963
STEADIER LIGHT
LESS ATTENTION
PERFECT COLOR BALANCE
Free Carbon Chart
15
"Talaria" Offers Pay TV to All Theatres
NEW YORK — National General
Corp.. owner of theatre circuits on
the west coast and the continental
divide (220 theatres), has announced
that it is pushing ahead with plans to
form a theatre pay television network
utilizing General Electric's new
Talaria light valve projector system.
Eugene V. Klein. National Gen-
eral president, said that by next year
the company hoped to have approxi-
mately 100 of its houses in a pay
television web which would include
programming "52 weeks of the year."
Although Talaria was developed by
General Electric and uses some of the
patents included in the Eidophor
process to which 20th Century-Fox
has American rights, it is understood
that GE carries it further, adding its
own secret processes. National Gen-
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EV 8-1550
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PROJECTOR
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RINGSDORFF CARBON CORP. East McKeesport, Pa.
16
TALARIA— New General Electric
color projector which makes possible
the nation's first full-scale pay TV
network will be used in movie theater
chain of National General Corp. Pro-
jector has wide range of possible uses
outside the commercial entertainment
field, including medical and other in-
struction, military briefings, long-dis-
tance business meetings and political
conventions.
eral will handle the franchising, leas-
ing and selling of Talaria on a nation-
wide basis but servicing of the
equipment will be from GE shops
located around the country.
Talaria makes possible, the joint
announcement said, for the projection
of both color and black and white
television images on the large-size
theater screens. It is National Gen-
eral's plan to include in its program-
ming Broadway shows, national
sports events and other special fea-
tures which it may purchase or pro-
duce itself. Transmission of the pro-
grams to theatres joining NG's net-
work will be by leased telephone
wires.
Klein said that he believed that
admission prices can be held "sub-
stantially lower" than those currently
charged for conventional film product
shown in metropolitan theatres.
"This new network makes pay TV
a fact of today rather than a complex
dream of tomorrow," Klein said. "It
puts major entertainment events
where they belong and can achieve
their greatest effect — in the theatre.
"Our present theatre operations
show that the American public wants
to get out of their homes to be enter-
tained. The type of entertainment
now planned will prove this beyond a
doubt." Klein declared.
The large-screen capability of
G. E.'s new Talaria projector is ex-
pected to have important implications
for the entertainment industry, as
well as for education ( particularly
medical education), military and
business communications.
Until perfection of the projector by
G.E.'s Technical Products Operation,
Syracuse. N. Y., display of TV pic-
tures on full size (25-by-33-footj
screens with adequate brightness was
limited to black and white. Previous-
ly most color systems were limited to
screens about one-fourth this size and
thus were impractical for large
audiences.
Robert L. Casselberry, general
manager of TPO, said the Talaria
projector provides a picture with
brightness, contrast ratio, geometric
accuracy and color fidelity that com-
pares very favorably with color film.
National General has signed multi-
million-dollar contracts under which
General Electric will supply projec-
tors and service.
The key factors which make possi-
ble the capabilities of this projector
are the development of a special con-
trol fluid, the development of a novel
light gathering system to utilize the
very high light output of a 5-kw
BIG-SCREEN COLOR TV— Unique
color television projector developed by
General Electric throws high-quality
picture on theater-size screen. National
General Corp., 220-theater movie ex-
hibitor, plans to use the new Talaria
projector in a nationwide pay theater
television network. Before G. E. de-
veloped the projector, only black-and-
white TV projection was possible on
large screens. Color projection was
limited to one-fourth the size of stand-
ard movie screens. Talaria produces the
three primary colors (red, green and
blue) from only two light beams (green
and magenta). Simplified projection op-
tics make it possible to get primary
red and blue from the single magenta
beam.
International Projectionist March 1963
xenon arc lamp, and a simplification
of the projection optics wherein all
three primary colors are projected
with onlj two output light beams.
This dual-beam method results in a
simpler and more reliable projector,
and substantial!) simplifies the prob-
lem of achieving and maintaining
precise color registration. This is
particularly important for large-
screen projection where minute errors
would be greatl) magnified.
The Talaria projector has a high-
power light source and an optical
projection system similar to that of a
motion picture projector. But in
place of the motion picture film, a
thin la\ei of viscous fluid is used.
This control fluid was developed by
General Electric for this particulai
application and is said to have unique
electrical, mechanical, chemical and
optical properties.
This control layer is continuously
scanned lt\ an electron beam in the
COMPARISON— Diagram compares
operation of new General Electric Ta-
laria (light valve) projector with stand-
ard film projector and with TV sys-
tem using cathode ray tube. In Talaria
system, a layer of special viscous fluid
is continuously scanned by electron
beam. Light from high-power source,
is controlled by layer which takes place
of printed film in standard movie pro-
jector. Third system at bottom projects
light directly from cathode ray tube and
is limited in brightness. The Talaria
projector is similar to a standard movie
projector in that both use a high-power
light source and a system of lenses to
direct the light beam through the film
and produce a picture on the screen.
For practical purposes, the Talaria light
valve projector works the same way,
except that the printed motion picture
film is replaced by a transparent thin
layer of viscous control fluid. An elec-
tron gun operating as it does in a TV
picture tube scans the surface of the
control layer. Instead of producing a
picture directly on the layer as it does
on the phosphor face of a TV picture
tube, the electron beam causes the fluid
layer to control the light so that the
picture is projected onto the screen.
International Projectionist March 1963
same manner as the phosphor on the
face of the picture tube in a conven-
tional TV set. But instead of produc-
ing a picture directly on the control
layer, the scanning process controls
the light from the lamp which passes
through the control layer in such a
manner that a live picture is instan-
taneously produced on a large screen
in full color and brightness.
The projector uses an optical pro-
jection system so arranged that all of
the light from the source is intercept-
ed by sets of stops so that no light is
projected onto the screen as long as
the control layer is smooth. The elec-
tron beam deforms the surface in
accordance with the incoming picture
information. Electrostatic forces
produce these deformations which
cause the light to be deflected around
the stops and onto the screen to re-
produce the original scene.
The technique of employing a high
efficiencj 5-kw xenon lamp at the
source <>f light for the projected pic-
ture and utilizing the- electrical pic-
ture signal to control or modulate this
light overcomes the limitations nor-
mall) encountered regarding screen
brightness and picture size.
I he xenon lamp can convert far
greater electrical power into light
with much higher efficiency than can
he accomplished on the phosphor face
of a projection cathode raj tube. The
xenon lamp has an intrinsic peak
brightness of 730.000 candles per
square centimeter, which is five times
the apparent brightness of the sun.
For comparison, tungsten lamps have
a brightness of onl\ .1000 candles per
square centimeter.
Persistence, or storage character-
istics of the Talaria projector depends
on the rate at which deformations of
the control fluid decay or subside.
Control fluids can be compounded
which allow the persistence to be
made correct for the fast frame rates
required in live television presenta-
tions, or very long for long storage or
slow rewriting cycles. This long stor-
age characteristic prevents objection-
able "flicker" when the projector is
being used for static display in which
much of the picture may remain un-
changed for long periods.
The Talaria projector is a highly
flexible unit that can be used for
PROJECTIONISTS
PREFER
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HEYER-SHULTZ
UNBREAKABLE METAL REFLECTORS
TOP SCREEN
ILLUMINATION
WILL NOT
PIT OR TARNISH
5 YEAR
GUARANTEE
FACTORY
REFINISHING
SERVICE
5m Tour
Theatre Supply Dealer
Manufactured by
HEYER-SHULTZ, Inc. c.()'< drop-
ped to 65', after one winter. This is a change in color
from a bright silver) white to light gray. Then. too. the
initial light gain of 3 of thi> screen la center-screen re-
Oectivit] of 300^5 measured on the optical axis 1 dropped
to l1^ l center-screen reflectivity of 15095 in the same
length of time. Even though the extreme ends of the
ramps received a hit more light than they did when the
aluminum paint was fresh, the overall reflectance was
down, and the middle of the viewing area suffered ex-
cessive dimming of the picture.
Aluminum paint manufacturers mav claim that the
particular brand of paint used on this screen was of
poor quality, but this severe loss of reflecting power
and gain in a 12-month period is entirely in line with
our experience with several brands of aluminum screen
paints used out of doors. Indeed, we are reluctant to
assign a center-screen reflectance greater than 150% •
to any weathered aluminum-painted drive-in screen even
when the screen is properly tilted so as to give the
audience the benefit of this admittedly moderate light-
gain. An aluminum-screen reflectivity of 150%, con-
servative though it may be. is a very safe one to guide
us in the choice of a suitable screen size and a set of
arc lamps to insure the standard minimum brightness
of 41 L. FL.
Therefore, if the aluminum screen has an axial
reflectivity of 150%. it should be no wider than 90
feet when the lamps burn regular 13.6-mm carbons at
about 160 amps., or no wider than 105 feet when the
lamps are of the blown-arc type. Of course, a higher
gain than 1 j L> will permit the projection of still larger
pictures having a brightness of at least 4VL> FL, but we
refuse to count on a gain much exceeding 1% for out-
door aluminum screens.
The foregoing maximum screen-width recommenda-
tions are for 35 - mm non - anamorphic projection, and
are based on the assumption that the light transmission
of the projector shutter is at least 50% ( it is usually
a little more in drive-in projectors I. that there are
no physical obstructions in the path of the light beam
a- it comes from the arc lam)) I onlv modern mechanisms
fill this requirement), that the projection lens is anti-
reflection coated and has an optical speed of at least
f 1.''. and preferably f 1.7. If projector-port glasses
are used in the drive-in projection building to prevent
urilt\ du-t from blowing in and settling upon the lenses,
LUMENS FOR H F00TLAMBERTS
LUMENS FOR 10
F00TLAMBERTS
SCREEN
WIDTH
Q5%
CARBON
150^
CARBON
85%
CARBOl
150^
CARBON
(Feet)
MATTE
AND
ALUMINUM
AND
MATTE
ANI
»
ALUMINUM
AND
SCREEN
AMPERAGE
SCREEN
AMPERAGE
SCREEN
AMPERAGE
SCREEN
AMPERAGE
20
1 ,600
7mm 40A
900
1,400
7mm 40A 3,500
7mm
42A
2,000
7mm 40A
25
2,500
7mm 40A
7mm 40A 5,500
7mm
50A
3,100
4,500
7mm 40A
30
3,600
4,900
6,400
7mm 42A
2,000
7mm 40A 8,000
9mm
80A
7mm 46A
8mm 60A
3
7mm 46A
2,800
7mm 40A 11 ,000
10mm
110A
6,100
8mm 60A
3,600
7mm 42A 1 4,000
13.6
145A
8,000
9mm 80A
±5
8,100
9mm 80A
If, 600
7mm 46A 18,000
13.6
165A
10,000
10mm 100A
50
10,000
10mm 100A
5,600
7mm 50A 22,000
Blowr
i arc
13,000
11mm 115A
55
12,000
10mm 105A
6,800
8mm 65A (27,000)
15,000
13.6 150A
60
14,000
11mm 120A
8,000
9mm 80A (32,000)
18,000
13.6 165A
65
17,000
13.6 160A
9,500
9mm 85A (37,000)
21 ,000
Blown arc
70
20,000
Blown arc
11,000
10mm 110A(43,0O0)
25,000
Blown arc
V
23,000
Blown arc
13,000
1 1f, 000
11mm 115A(50,000)
(28,000)
80
(26,000)
11mm 120A(57,000)
13.6 155A(64,000)
(32,000)
85
(29,000)
16,000
(36,000)
(41 ,000)
90
(32,000)
18,000
13.6 165A(72,000)
95
(36,000)
(40,000)
20,000
Blown arc (80,000)
(45,000)
100
23,000
Blown arc (88, 000)
(50,000)
105
(44,000)
25,000
Blown arc (97, 000)
(55,000)
110
(48,000)
(27,000)
(110,000)
(61,000)
115
(53,ooo)
(30,000)
(120,000)
(66,000)
TABLE 1 — Required screen lumens (projector run-
ning without film) and suggested sizes of positive carbons
and arc currents for screen widths of 20 to 115 feet for
either 4J/2 or 10 footlamberts brightness on white and
International Projectionist
April 1963
aluminum screens. (Lumen values in parenthesis exceed
the capacities of the most powerful arc lamps.) MULTIPLY
ALL LUMEN VALUES IN THIS TABLE BY 2 TO
EQUATE WITH MANUFACTURERS' RATINGS.
5
Reasonably uniform illumination
on drive-in screens is desirable.
Side -to -center light distributions
of less than 60% results in a
center -screen "hot spot"
they should be of the finest quality flat-ground and
polished colorless optical glass. Anti-reflection coating
of projector-port glasses is desirable, but not abso-
lutely necessary.
All available methods of reducing heating of the
film and projector gate should be utilized in drive-in
projection, otherwise it will be impossible to get sharply
focused pictures on the screen. Air cooling of the film
is optional, however, as there is some doubt as to its
efficacy in reducing film flutter. Water cooling of the
gate and aperture is a necessary adjunct to successful
drive-in projection: and the use of either heat filters
or cold arc-lamp mirrors must be regarded as an abso-
lute necessity.
Interference-type heat filters ( not the older absorp-
tion type! ) should be used with Suprex-type lamps burn-
ing 8-mm positive carbons at 70 amps, and with Suprex
lamps burning 9-mm carbons at 75 or 80 amps. The
more powerful rotating-positive high-intensity mirror
lamps require either heat filters or cold mirrors, but
the latter being preferred because they reduce heat as
effectively as the best filters without wasting light as
filters do. Light, it must always be remembered, is
at a premium in drive-in projection.
Filters and Cold Mirrors Compared
Old-fashioned infrared-absorbing filters reduce heat-
ing of the film by about 40% with an accompanying
light loss of 20% . Interference, or "dichroic,"* heat
filters do not absorb infrared radiation, but reflect it
tack toward the lamphouse. These reduce the heat by ap-
proximately 45% with a 15% light loss. Cold mirrors,
on the other hand, allow the invisible heat-producing
infrared rays to pass through into the rear of the lamp-
house, and thus reduce heating of the film by about
46% with no loss of light relative to the efficiency of
ordinary silvered mirrors.
In order to reduce focus-ruining heat on the film
without the light losses occasioned by heat filters, we
urgently recommend that interference (dichroic*) cold
mirrors be installed in all rotating-positive reflector
lamps, and that heat filters be eliminated. As a matter
of fact, the successful operation of all the more power-
ful high-intensity arc lamps, including those of the
blown-arc type, absolutely requires the use of cold mir-
rors.
Because of their prodigal consumption of power and
relatively low luminous efficiency, condenser-type arc
lamps are not recommended for drive-in use. A few
of the larger indoor theatres retain these old power-
eaters because they are relatively insensitive to small
errors in arc focus, making their operation very simple,
and because they provide exceptionally uniform illumina-
tion on the screen. Frequent replacement of chipped
and cracked condensing lenses adds to the cost of their
operation.
60% — 80% Light Distribution
All high-powered mirror lamps of American manu-
facture provide a reasonably uniform distribution of
light without a conspicuous "hot spot" in the middle
of the screen. When the arc is focused for maximum
screen light, Suprex-type lamps having 14-inch mirrors
give a side-to-center light distribution of 60% with 7-
and 8-mm positive carbons, and 65% with 9-mm car-
bons. Rotating-positive lamps having 16- or 18-inch
mirrors provide a distribution of 55% with 9-mm car-
bons, 60% with 10-mm carbons, 65% with 10-mm Hi-
tex and 11-mm regular carbons, and 70% to 80% with
13.6-mm carbons, the more uniform light distribution
being obtained at currents close to the rated maximum
for this size.
A new lamp on the market gives a side-to-center
distribution in excess of 75% by shifting the "spot,"
or arc-image focus, ahead of the aperture. The Strong
Jetarc blown-arc lamp, which burns 10-mm Hitex car-
bons in the 130-138 amp. range, and 10-mm Ultrex
carbons in the 155-160 amp. range, provides a light dis-
tribution of 80% and higher on the screen. This ap-
pears perfectly uniform to the eye.
It was previously stated that the drive-in minimum
light-level standard of 41/>> footlamberts can be ob-
tained on matte white screens 65 feet wide with mirror
lamps burning 13.6-mm carbons at 160 amps., or 75
feet wide with blown-arc lamps. The maximum widths
for the same light level with the same types of lamps
on aluminum screens of 150% center reflectivity are
90 and 105 feet. If the screen width is substantially
smaller, the attainment of the indoor minimum standard
of 10 footlamberts is entirely feasible, providing a bril-
liance of projection which will prove an eye-opener to
most drive-in patrons, and gain considerable favor for
the theatre. Audiences appreciate seeing motion pic-
tures at their best!
"Indoor" Brightness for Drive-Ins?
How wide can the screen be to have not less than
10 FL of center-screen brightness when the more power-
ful arc lamps are used? If the screen is matte white
(85^ refl. ), it may be up to 45 feet wide for a 10 FL
level when 13.6-mm carbons are burned at approxi-
mately 160 amps, in mirror lamps, or up to 50 feet
wide when blown-arc lamp equipment is used. If the
screen is of the 150% aluminum-painted type (properly
*The word "dichroic" actually means "two-colored," and
should be restricetd to mean only interference filters and mirrors
which transmit one color, or portion of the visible spectrum, and
reflect another. The term "color" does not properly apply to
infrared or any other invisible radiation. All colors are perforce
visible: the terms "invisible colors" and "invisible light" are
absurd.
(Please turn to page 18)
International Projectionist
April 1963
The Cover Story:
Simplex Projector
Line Humming
If you wanted to see some evidence
. >f the recent upswing in the motion
picture theatre industry, all you
would have to do is \ isit the produc-
tion line of Simplex XL projection
mechanisms. Hundreds of XLs in
various stages of completion and
testing were in evidence at the Plea-
santville. New York plant of National
Theatre Supply's fellow subsidiary of
the General Precision Equipment
Corp., the Pleasantville Instrument
Co.
\t one end of the production line.
■ in- could see a i emarkable $45,000
Bui'irmaster machine, which i> con-
trolled hv magnetic tape and auto-
matical drills, taps and does other
operations on castings. In the final
stages "I the assemblj process, vou
find experts utilizing test film to
check ever) mechanism for the
steadiness that the Simplex \l. mech-
anisms have become famous for. No
projector can he shipped out unless
it nicety the most rigid standards of
perfection set up for this equipment.
\\ il la id J. Turnhull. president of
National Theatre Suppl) Company, is
extremelv enthused about prospects
of the motion picture- industry. Last
summer, for example, his companv
supplied Simplex \l. projection and
Cover Story:
John Conway, member of local 306,
Motion Picture Machine Operators,
I.A.T.S.E., is shown on the cover in
the projection room of Cinema II, the
lower level theatre in the structure that
houses two theatres in one building.
The upper level theatre is called
Cinema I.
Located on Third Avenue in New
York City, Cinema I and Cinema II
were opened last June by Rugoff
Theatres, Inc. Both theatres are equip-
ped with Simplex XL projection and
sound systems. Conway, who has been
a projectionist since 1923, feels very
strongly that a pair of Simplex XL's
are the best friends a projectionist can
have. Their smoothness and reliability
are unexcelled, in his experience.
Cinema I and Cinema II are two of
) the seven new theatres opened in the
New York City area during a six week
period last summer. All seven of the
theatres chose Simplex XL projection
equipment. National Theatre Supply's
New York City bran;h handled all
the installations.
"Remarkable Reliability"
At New York's famed Radio City Music Hall, chief projectionist Ben Olevsky put it this
way. "The reliability of the Simplex X-L projector is remarkable. Our projectors were
installed by National Theatre Supply in 1950 and have been maintained by our staff
since then. In 11 years of operation they have never been removed for overhaul!"
Similar opinions and experiences are reported all the time by projection "pros" like
Ben at most top theatres throughout the country. The facts are that no other mechanism
on the market is designed and built to the engineering perfection achieved in the X-L.
Incorporating every new advance in projection, the X-L is your assurance that you'll
have a dependable, up-to-date projector for many years to come.
projection and
SOUND SYSTEMS
NATIONAL THEATRE SUPPLY COMPANY Branches Coast to Coast
50 PROSPECT AV ENU E • TAR RYTOWN, N.Y.'MEDFORD 1-6200
SUBSIDIARY OF GENERAL PRECISION EQUIPMENT CORPORATION
International Projectionist
April 1963
sound equipment for seven new thea-
tres that opened during one six week
period in the New York City area
alone. Turnbull pointed out the
growing awareness on the part of the
industry for the need to have projec-
tion and sound of the finest quality.
He stated "Brilliant projection and
excellent sound reproduction are two
vital elements of motion picture pre-
sentation that no other entertainment
media can compete with. A theatre
owner that shows a jumpy, out-of-
focus film, with poor quality sound,
is selling shoddy goods. Customers
The Simplex XL production line where parts and major sub-assemblies are added
to the main frame.
don't like it and won't come back
even if the best feature pictures are
being shown. This is one reason why
many of our orders for new equip-
ment are for replacement of 20 and
30 year old projectors."
In the final stage of assembly, the
shutter is installed prior to putting the
outside covers and doors in place.
SPEED
IN PROJECTION
Kollmorgen lenses rate tops in the motion
picture industry. Used exclusively with
Cinerama, they are standard equipment
in more than 70% of American theaters.
High light uniformity and less light loss
on the screen— the whole screen— are typ-
ical of the outstanding performance of
super snaplite'I" lenses.
Other advantages that add up to supe-
rior screening with super snaplite are:
Wire sharp contrast
Uniform illumination
Crystal clarity
Wide range of focal lengths
Sealed construction
All mechanisms are run-in and final
adjustments or touching up is com-
pleted at this stage of the production
line.
Bulletin 222 describes Kollmorgen
lenses in detail. See your equip-
ment dealer, or write us direct.
CORPORATION
NORTHAMPTON, MASSACHUSETTS
The mechanisms are now ready for the
steadiness test. The projectors shown
here are part of over a million dollars
worth of Simplex XL projectors in
various stages of assembly.
International Projectionist
April 1963
Every mechanism is cxactingly tested
for steadiness. Experts use special test
films to check for picture jump and
side weave.
Three Get New Kodak
Executive Positions
ROCHESTER, N. Y. — Appoint-
ment of three Eastman Kodak execu-
te ea to new positions within the com-
parn have been announced here.
Mechanisms are thorougly cleaned by
means of a spray bath with special
chemicals.
This $45,000 Burgmaster machine is
controlled by magnetic tape. It auto-
matically drills, taps and does other
operations on the castings. il*
\\ illmont. Moss, eastern regional
assistant credit manager since L954,
has been appointed manager of the
western credit region. R. G. Van
Duyne, office manager for the south-
eastern sales division with headquart-
ters at (lhamhiee. (la., has been
brought to Rochester as credit man-
ager for the midwestern division.
He will be replaced by Louis B.
Stahlman who moves from the Kodak
Distribution Center to the office
managership at Chamblee. il*
CMcMfL PROVED BYTEST...BYFARTHE BEST
Arc Lamps and Rectifiers for Every Projector... for Every Theatre... The World's Finest
HERE ARE THE FACTS
SUPER CINEX ... The masterpiece
of the most experienced projection lamp
designer. No other lamp has even re-
motely approached its perfection from
every point of view— mechanically, elec-
trically, optically, hydraulically or its fine
air-conditioned system. Its durability and
stamina have been proved. More and more
fine theatres and drive-ins are re-equip-
ping with Ashcraft Super Cinex daily due
to their fine reputation for perfect screen
light and service. Current range with 1 3.6
mm carbon, 125-165 amperes.
CORE-LITE ... the latest and most
phenomenal producer of white light at
lowest possible operating cost in the fam-
ily of Great Ashcraft Arc Lamps. Same arc
burner and arc controls as the SUPER-
CINEX. Same quality and built-in reliabil-
ity. The lamp is optically designed to give
greater white light distribution at less cost
for carbons and electricity. There is none
better— anywhere! 70-110 amp.
CINE X 35/70 SPECIAL . . . The
Great of the Ashcraft Arc Lamps is a modi-
fied Super Cinex. Like the Super Cinex no
third element or relay lens is necessary
regardless whether 35 mm or 70 mm film
is being projected. Uses a 13.6 mm ^^
high intensity positive carbon at
current ranges between 1 25 and
1 40 amperes.
RECTIFIER ...THE SPECIAL CORE-
LITE 1 2 PHASE HIGH REACTANCE
"fCTIrltK . . . designed for the require-
ments of the Core-Lite lamp, this rectifier wi
give the best results. Low reactance 6 phase
rectifiers should not be used. Certain motor gen-
erators, but not all, are acceptable. The special
Core-Lite S/1212 rectifier will give you long,
excellent service with an absolute minimum of
expense. Other Ashcraft rectifiers available for
every power need. The cost is no more than for
inferior rectifiers.
SOLD EVERYWHERE IN THE UNITED STATES BY LEADING RECOGNIZED THEATRE SUPPLY DEALERS
CS. ASHCRAFT MFG. CO., INC. • 36-32 38th STREET- LONG ISLAND CITY 1, N.Y.
International Projectionist
April 1963
23
22
21
20
19
18
17
24
25
26
27
28
29
30
W. J. GERMAN, INC
. . . agent for the sale and distribution of
FORT LEE, N. J.
Jane Street
LOngacre 5-5978
CHICAGO, ILL.
6040 N. Pulaski Rd.
IRving 8-4064
HOLLYWOOD, CALIF.
6677 Santa Monica Blvd.
HOllywood 4-613 1
EASTMAN FILMS
that you should
specify for the
best of motion
picture and tele-
vision quality from
photography thru
release printing.
EXHIBITS
AT THE 93RD SMPTE CONVENTION, ATLANTIC CITY,
Company Booth
Mr. Edword Willerte 9
Animation Equipment Corp.
38 Hudson Street
New Rochelle, N. Y.
Mr. Victor Jomes 24, 25
Arriflex Corp. of America
257 Park Ave. South
New York 10, N. Y.
Mr. James L. Wossell 29
Bell & Howell Co.
7100 McCormick Rd.
Chicago 45, III.
Mr. Clifford Sawyer 34
Birns & Sawyer Cine Equipment, Inc.
6424 Santa Monica Blvd.
Hollywood 38, Calif.
Mr. Elliott R. Kurtz 12
CBS Laboratories
High Ridge Road
Stamford, Conn.
Mr. Lou Girola 5
Camera Equipment Co.
315 West 43rd Street
New York 36, N. Y.
Mr. Paul Meistrich 17
Camera Mart, Inc.
1 845 Broadway
New York 23, N. Y.
Mr. George Kyotow 16
Canon Camera Co., Inc.
30 East 42nd Street
New York 17, N. Y.
Mr. Herbert A. Hollander 23
ColorTran Industries
P. O. Box 188
Burbank, Calif.
Mr. Jules Leni 4
Comprehensive Service Corp.
245 West 55th Street
New York 19, N. Y.
Mr. Stuart Held 7
Ehrenreich Photo-Optical
Industries Inc.
1 1 1 Fifth Avenue
New York 3, N. Y.
Mr. Manny Kiner 26
Elgeet Optical Co., Inc.
303 Child Street
Rochester 11, N. Y.
Mr. Edward B. Krause 1 4, 1 5
Filmline Corp.
Erna Street
Milford, Conn.
Mr. Stephen G. Fisher 30
Oscar Fisher Co., Inc.
P. 0. Box 426
Newburgh, N Y.
Intern ^tional Projectionist
Compon ,
Mr. Arthur Florman
Florman & Babb, Inc.
68 West 45th Street
New York 36, N. Y.
Booth
21, 22
Mr. Ralph T. Jope
Hi-Speed Equipment,
73 Pond Street
Waltham 54, Mass.
Inc.
Mr. Harry Teitelbaum
Hollywood Film Co.
956 N. Seward Street
Hollywood 38, Calif.
Mr. Guenter Schmidt
Houston-Schmidt Ltd.
1450 O'Connor Drive
Toronto 16, Ont., Canada
Mr. E. Werner
Lipsner-Smith Corp.
3475 W. Touhy Ave.
Chicago 45, III.
Mr. Richard P. Sullivan
Logos, Inc.
1017 New Jersey Ave., S. E.
Washington 3, D. C.
28
39, 40
36
Company
Mr. D. J. White
Magnasync Corp.
5546 Satsuma Ave.
North Hollywood, Calif.
Mr. T. H. Truesdell
D. B. Milliken Co.
131 North Fifth Avenue
Arcadia, Calif.
Mr. Herbert Pilzer
Motion Picture Enterprises, Inc.
Tarrytown 83, N. Y.
Mr. Walter Braun
Paillord Incorporated
100 Sixth Avenue
New York 13, N. Y.
Mr. A. Potter
Photographic Applications, Inc.
160 Herricks Road
Mineola, L. I., N. Y.
Mr. A. M. Urenovich
Photo-Sonics, Inc.
95-25 Georgia Ave., Suite 201
Silver Springs, Md.
Booth
10
38
32
18
THE REVOLUTIONARY XENON LIGHT SYSTEM
FOR SUPERIOR MOTION PICTURE PROJECTION
check these big zeiss-ikon
xenosol advantages:
■ COLOR FIDELITY
■ LOW CURRENT CONSUMPTION
■ SUPERIOR QUALITY PROJECTION
■ TROUBLE-FREE CLEAN OPERATION
■ IMMEDIATE STARTING
ZEISS-IKON XENOSOL equipment -for new installations and
existing carbon arc housings— is available in 900 watt, 1,600 watt
and 2,500 watt sizes to fit every theatre's need.
For complete information: CINE ELECTRONIC SYSTEMS, INC.
225 East 46th Street, New York, New York. Phone: PLaza 8-1561
April 1963
11
Animation Stands*
*OXBERRY
For Slide-Filmstrip . . .
For Full Animation.
Available with Aerial
Image Projector.
Models Built to tit all
requirements . . .
all budgets.
America's finest ani-
mation studios use
only Oxberry.
FOR TECHNICAL INFORMATION
AND BROCHURE ... WRITE
the ANIMATION EQUIPMENT corp.
DEPT. P 38 HUDSON STREET
NEW ROCHELLE, N. Y.
West — 7445 Sunset Blvd., Hollywood, Calif.
England — 33 Liberty Lane,
Addlestone, Surrey
You Name It...
S.O.S. Has It!
Everything from A to Z
Here, under one roof, an entire building de-
voted to all your needs for producing pro-
cessing, recording, editing, lighting and show-
ing motion picture films . . . and at WORTH-
WHILE SAVINGS IN PRICE!
i
Amplifiers
Anamorphic Lenses
Animation Stands,
Titlers
Arc Lamps
Auricon Cameras
Books, Technical
Booms, Micro-
phones
Cameras, Profes-
sional
Colortran Lights
Dollies, Cranes,
-Tripods
Drive-ln Theatre
Equipment
Film Magazines
Film Printers
Film Cleaning
Machines
Film Cabinets
Film Editing
Equipt.
Film Lab Equipt.
Film Numbering
Machines
• Film Processors
± Visit S.O.S. Booth No. 1
^ S.M.P.T.E. Convention
S.O.S.
PHOTO-CINE-OPTICSJNC.
formerly S.O.S. CINEMA SUPPLY CORP.
602 West 52nd St., N.Y. 19— Plaza 7-0440
Western Branch: 6331 Holly'd Blvd.,
Hollywood, Calif.
12
Generators
Hot Presses
Lenses, All Sizes
Lighting Equipt.
Marquee Letters
Moviola Editors
Projection Equipt.
Projection Lamps
Projector
Mechanisms
Rectifiers
Reels, Cans, Film,
Tape
Reflectors
Sound Cameras
Soundheads
Sound and Speaker
Systems
Stage Equipmnet
Stripping Machines
Synchronizers,
Splicers
Technical Books
Theatre Equipt.
Viewers, Sound
Readers
Zoom Lenses, etc.
Mr. Irwin R. Sheldon 1 1
Precision Cine Equipment Corp.
928-930 East 51st Street
Brooklyn 3. N. Y.
Mr. A. J. Briglia 19, 20
Quick-Set, Inc.
8121 N. Central Park
Skokie, III.
Mr. Dominick J. Capano 1
S. O. S. Photo-Cine-Optics, Inc.
602 West 52nd Street
New York 19, N. Y.
Mr. T. Tanabe
Export Section
Shiba Electric Co., Ltd.
Hibiya-Kaikan Bldg., 20, 2-chome
Uchisaiwai-cho, Chiyoda-ku
Tokyo, Japan
Mr. David V. Hall
Photolamp Division
Sylvania Electric Products, Inc.
730 Third Avenue
New York 17, N. Y.
Mr. Fred Emens
Wollensak Division
Revere Camera Co.
850 Hudson Avenue
Rochester 21, N. Y.
Mr. Walter Steuer
Zoomar, Inc.
Sea Cliff Rd.
Glen Cove, N. Y.
Neils Tuxen
N. A. Philips Corp.
100 East 42, NYC.
Al Nathanson
Camera Service Center
333 West 52, St., NYC.
George Vanoni
Permacel, Inc.
New Brunswick, N. J.
George Vaughn
Time Automated Mfg. Co.
Woodside, N. Y.
Allen Processors
Milford, Conn.
27
35
31
13
37
33
48
49
50
iP
PROJECTIONISTS
PREFER
ETHYLOID
Film Cement For
BEST RESULTS
Available from
Supply dealers
FISHER MFG. CO.
1185 Mr. Read Blvd.
Rochester, N.Y.
3 NEW CAMERA MART ACCESSORIES
newGTC-59
LENS CLEANER
& PROTECTOR
• Anti-Fog • Anti-Static
Ideal for lenses, cameras,
condensors, reflectors, optical
equipment, etc.
6 oz. can with Spray Applicator $1.65 each
Case of 12/ $ 1.00 each
m-hmi) liquid
INSULATING TAPE
lust Brush it on Those
Hard-To-Tape Places
Designed for use in electrical in-
stallations, maintenance and re-
pair. Prevents shorts, shocks.
2 oz. Bottle $1.65 each Case of 12/$1.00 each
Restores,
Quiets,
Lubricates
cnmzft
f/zn/
'•aiil^
Completely safe for sound pro-
jectors, amplifiers, studio rec-
ording equipment and editing
equipment. Non-inflammable.
Used for all gummy parts —
instantly cleans and deposits a
hard bonded dry lubricant.
2 oz. Bottle $1.00 each Case of 12/75C each
Write for complete literature. All Prices F.O.B. N. Y.
tinman mum*
1845 BROADWAY (at 60th St.)
NEW YORK 23, NX • PLaia 7-6977
PUCES
NOT
HOLDING
$
?
Film breaks are costly.
Play safe by using
JEFRONA
All-purpose CEMENT
Has greater adhesive
qualities. Don't take
our word for it. Send
for FREE sample and
judge for yourself.
Camera Equipment
Company, Inc.
Visit SMPTE Booth — #5
315 W. 43rd St. New York 36, N.Y.
JUdson 6-1420
6510 Santa Monica Blvd., Los Angeles
51 E. 10th Ave., Hialeah, Fla.
International Projectionist
April 1963
SMPTE Studies Wide Range
Of Technical Projection Subjects
\ wide range of motion picture
and television technical topics will
he discussed when scientists and
engineers meet this spring at the
Travmore Hotel in Atlantic City,
\. J.. April 21-26. for the 93rd
semiannual convention of the Society
of Motion Picture and Television
Engineers.
The format of the meeting is based
on these subject areas, handled b\
these topic chairmen:
"Application of Motion Pictures
and Television to Education" under
0. S. Knudsen of Iowa State L ni-
versirj .
"Current Trends in Laboratory
Send
for complete
information
NATIONAL STUDIOS
42 West 48 Street, NYC
You want to project
a good picture?
Install a
Hurley Screen
HURLEY SCREEN CO., INC.
96-17 Northern Blvd.
Corona 68, New York
See your theatre supply dealer
Practice under John J. Kowalak of
Movielab, Inc.. New York.
"Instrumentation and High-Speed
Photography" under Morton Sul-
tanoff of Ballistic Research Labora-
tories. Aberdeen. Md.
"New Instrumentation in Televi-
sion under R. L. Pointer of Ameri-
can Broadcasting Co., New York.
"New Technology of 8mm Com-
mercial Motion Pictures under Dr.
('. Loren Graham. Eastman Kodak
Company, Rochester. N. Y.
"Recent Motion Picture and Tele-
vision Developments in Outer Space
rechnology" under H. M. Gurin.
RCA Astro-Electronic Division Prin-
• eton, Y .1.
I he program will open April 22.
with a session ol papers in the area
of film processing and laboraton
developments. The next session will
cover 8mm md 16mm technical and
engineerini; developments.
Motion pictures and television in
outer space and instrumentation and
high-speed photograph) comprise
three «.~M,,n^ on Tuesday. Three
television sessions on Vi ednesdav ami
llunxlav cover circuit development:
color and monochrome TV, and
automation ; and motion pictures tor
television, and video tape. Beginning
Hiursda) evening and finishing on
Iiidav are three sessions on motion
pictures and television in education.
iP
Miss M. B. Reilly to
Head W. J. German
\IA\ YORK — Miss \l. 15. Reilly,
associated with Jules Brulatour and
the sale of Eastman kodak raw film
since I'M), has been elected president
ol \\ . J. German, Inc. as the suc-
cessor to the late William J. German
who died on the West Coast last
month.
Miss Reilly. who is Mrs. James F.
Burns in private life, served as execu-
tive secretary of the German com-
pany. Her entrance into the raw film
business preceded that of German by
nine years, German having left
Kodak in 1922 to join the Brulatour
organization. In 1952 she and Ger-
man joined to form the German
(Continued on Page 15)
the only
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process
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• Originals
• Negatives
RAPIDWELD for scratched
film: We remove scratches
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improper splices, and apply
our exclusive protective
coating.
8mm Service Now Available
"The Film Doctors"
rapid Film Technique Inc.
37-02 27th St., L.I.C. 1, N. Y.
STillwell 6-4600
New Life For Old Film
Long Life For New Film
CREATE THE RIGHT MOOD EVERY TIME WITH THE
Major Mood Music Library
MAJOR offers you a full thirty-five hours of mood music for
titles, bridges, backgrounds.
Write for Free Catalogue
THOMAS J. VALENTINO, INC.
Established 1932
150 West 46th Street CI 6-4675 New York 36, N. Y.
International Projectionist
April 1963
13
PROJECTED HIGHLIGHTS
By Ray Gallo
The 93rd SMPTE convention and Spring Equipment
Exhibit now going on at the Hotel Traymore in
Atlantic City. N. J., displays some unusual motion pic-
tures, highspeed photography and television instru-
mentation for conventional and "outer space" uses.
Nearly every conceivable invention has been utilized
first for military purposes — now we use these same
techniques to make civilian amusements more perfect
and enjoyable. For instance, take the telephone, the
radio, the phonograph and the latest, television. Once
they served the needs of our national defense in World
Wars I and II and in between skirmishes, and now
all have been combined to make film and tape record-
ing an integral part of our sound and sight develop-
ment to record data and to serve our generation in
developing a better appreciation of music and photog-
raphy as part of our American culture. All this and
more is well displayed in 8mm - 16mm - 35mm - 70mm
equipment at the SMPTE exhibit of commercial and
military systems now available to all branches of amuse-
ment. The dedicated scientist and engineer who works
quietly in the laboratory has made this all possible,
and this week was an active member of the SMPTE,
his work is on display and speaks for itself. Among
the many exhibitors are firms such as Animation
Equipment Corp., leaders in the field of animations
instruments: Arriflex Corp. of America, distributors
of the Siemens & Halske West German 16/16 single
and double sound system projector: Camera Equip-
ment Co.. headquarter and distributors of a complete
line of production, laboratory and studio equipment:
S. 0. S. Photo-Cine Optics, Inc.. America's department
store of motion picture and television equipment for
all blanches of the arts; Camera Mart Inc., sponsors
of the Annual Film Editing Workshop Seminar and
equipment rental firm. And there are many other
interesting displays. More than 60 booths will exhibit
domestic and foreign and U. S. government develop-
ments. Jack H. Freeman, sales vice president of Radi-
ant Manufacturing Corp. just appointed Charles R.
Horwritz. formerly with Graflex. district manager
of the Chicago projection screen firm. Nicholas Rei-
sini, present head of Cinerama, another U. S. govern-
ment development that has given the American mo-
tion picture industry a real "shot in the arm" received
a "Congressional Record" tribute by Senator Hum-
phrey for his public spiritedness. To demonstrate how
America produces top high-grade furniture of the
Italian and French Provincial style, the New York State
Association of Projectionists will take a tour through
Jamestown, New York, furniture plants during their
50th anniversary convention in May. William J. Red-
dick of the W. J. German Inc. Eastman Film Sales
Agency, has been elevated to the post of vice president.
Reddick has been one of the important working mem-
bers of the SMPTE since 1952. Word comes from Rav
Brian, business agent of the Peoria and Pekin. Illi-
nois local #434 of the IATSE, projectionist unit, that
he has received an invitation to make available some
of his "antique projectors" as permanent exhibits for
the new Hollywood Museum. This is the outfit be-
ing sponsored by leaders of the motion picture indus-
try. Arthur Knight is the curator. Cinerama. Cine-
mascope. Todd-AO and many other systems have made
wide screen projection extremely popular — the screen
in Constitution Hall, the National Geographic Society,
in Washington. D. C. measures 23 feet wide by 13
feet, 8 inches high. It provides a throw of about
160 feet for lectures, utilizing both 16mm black and
color. 35mm film, color and slides. If any member
of the SMPTE has a book or literature that explains
how sound motion pictures are made and projected,
it would help William M. Burt. Director of Film Equip-
ment Exchange at the Dept. of the Army at Vallev
Forge General Hospital, prepare lectures for his post
projectionists. In fact, any films on the subject would
be very welcome. You can address Mr. Burt at Pheo-
nixville, Pa. c/o MEDFV-PT. Another person very
much interested in receiving catalogs and data on ail
types of motion picture equipment is Jean Audie Fabius
fo Port Au Prince in Haiti. He is learning the business
and can be reached by mail c/o P. 0. Box 1124.
Recordak, another new Eastman product is the world's
fastest microfilmer. It is specially designed for high
speed recording of continuous forms produced bv
modern computers in high volume. New product re-
leases which have come to our attention recently are
the "Edling Teachers Console" for group reading and
the "Keystone View" both audio-visual equipment.
The former is designed by Staples-Hoppmann, Inc.
of Alexandria, Va. and the latter by Mast Develop-
ment Co. of Davenport. Iowa. Dennis Kealey of
Reevesound Co., ( one of the many units developed
by Hazard Reeves, and now headed by Boyce Nemic.
former executive secretary of SMPTE ) should be com-
plemented for his wonderful work as exhibit chair-
man at the current SMPTE convention. The job was
so well done that an upper section exhibit had to be
added for extra displays. Nathan D. Golden, who is
retiring this month as Director of the Scientific Photo-
graphic and Business Equipment Division of the De-
fense Services Administration. U. S. Dept. of Com-
merce, is one of the best known and liked Washington
officials who has served the motion picture industry
interests for so many years and will be missed by
SMPTE members who worked with him so well — Good
Luck. Nate, on your future plans. Besides General
Electric, Sylvania will make the theatre screen type
of television soon. In fact, plans are now being formu-
lated to install theatre TV screens from coast to coast
in selected key spots as a counter move against pay-
TV in the home. So far. the many toll-TV systems
tried out for home subscribers have not been very suc-
cessful, but to offset any possible "real threat" theatres
will now compete to control their "friendly enemy."
iP
BRIGHTER LIGHT
LONGER BURNING
SHARPER PICTURE
Free Test Samples
l11Tf**»»»»»'»»n*»'ui»Ti
(?a>z&Hte
CARBONS INC., BOONTON, N. J.
Illll'^'--1liiiliii i inn i - I
STEADIER LIGHT
LESS ATTENTION
PERFECT COLOR BALANCE
Free Carbon Chart
14
International Projectionist
April 1963
*tf
• "LET'S TWIST "I
Yes, That Easy to Use-No Tools Needed
Just Twist The Stub In & Out . . .
NO GRINDING— NO OIRT
& r s *
IF YOU ARE NOT USING The
"Little Miser" Carbon Saver
YOU are losing several Hundred Dollars
Each Year!
4 Sizes 9-10-llm.m. $3.00 Each
13.6m.m. $4.50 Each
ORDER Now— Stort Saving Money $$
(We Suggest 3 In Bach Projection Room)
LOU WALTERS
Sales & Service Co.
MOTION PICTURE EQUIPMENT
EV 8-1550
4207 Lawnview Ave. Dallas 27, Texas
PROJECTOR
CARBONS
Better
Light!
Lower
Costs!
RINGSOORFF CARBON CORP. East McKeesport. Pa
Norelco
projection
equipment
Available from
leading theatre supply
dealers
North American Philips Co., Inc.
Motion Picture Equipment Division
100 E. 42nd St., New York 17, N.Y.
International Projectionist
W. J. GERMAN
from page 13
company which was successor to J.
E. Brulatour. Inc.
The company also announced the
election of Morris H. Bergreen. a
hoard member and general counsel.
to the post of senior vice president.
It is understood that Eastman
Kodak will take over sales and dis-
tribution of raw film from the W. J.
German company Jan. 1. 1964. but
the German organization will con-
tinue to administer its other holdings
and enterprises.
Norelco Projector
Gets Academy Award
SANTA MONICA, CM. IF. — The
Norelco Universal 70 35mm. projec-
tor received one of the special awards
from the Academv of Motion Picture
\rt> ami Sciences in recognition of
outstanding technical achievement
for the showing of the newer wide
gauge tilms. It is the first such
award in the projection field since
1959.
Accepting a plaque for the North
\merican Philips Co. was lied I.
Pfeiff, technical manager of the
motion picture equipment department
of the firm. Mr. Pfeiff has been
closelv associated with the develop-
ment of the 70 35 mm. projection
system since it first became available
in L955. Original!) designed and
developed through the joint efforts
ol the American Optical Co. and
l'hilip>. this projector introduced the
70mm. Todd- M) process — a 1957
\c -adernv Ward winner— into movie
theatres. Jan Kotte of Norelco was
commended as the original designer
of this equipment.
Today there are more than 1,50
installations of the Norelco Uni-
versal 70 >5 projector in 35 states,
Canada and other countries.
In receiv ing the award. Pfeiff stres-
sed that motion picture audiences the
world over are enjoying greater
claritv and better quality of screen
images with less eye strain, thanks to
the wider films and the award-win-
ning Norelco projection equipment.
And there are important benefits
to the exhibitor. Pfeiff pointed out.
explaining that a single 70mm. print
has been played for as many as 1600
runs, film damage is greatly reduced,
and the Norelco 70/35 Projector may
be converted in minutes for either 70
mm. or 35mm. operation, providing
the theatre owner with greater ver-
satility in presenting the latest films.
North American Philips Company,
Inc. also produces the new Norelco
35mm. Pulse-Lite shutterless projec-
April 1963
tor for smaller theatres, a 35mm.
projector for arc lamp operation, as
well as professional 16 mm. equip-
ment.
Built primarily for 70mm. with
the added convenience of 35mm., the
Norelco Universal 70/35 Projector
enables audiences to see easily the
tiniest photographic details in such
current films as "Lawrence of Ara-
bia." '"Mutiny on the Bounty," the
forthcoming "Cleopatra." and many
more now in production. il*
— THE ENEMY —
HEAT
A 10 DEGREE REDUCTION
iN HEAT WILL TRIPLE
TRANSFORMER LIFE.
ARC AND SOUND SYSTEM
POWER SUPPLIES RUN
COOLER. A MODEL TO
REPLACE ANY BULB.
Write
BROWN ELECTRONICS
1717 South St., ALLENTOWN, PA.
THE VERY
FINEST
IN
PRO
4635 WEST LAKE ST., CHICAGO, ILLINOIS
15
Century Announces JJ-2 Model
to Project 70/35mm fill
^ NEW YORK— Century Projector
Corp. has announced a new Ameri-
can-made universal projector for pro-
jection of 70 and 35 mm films.
The new projector is called the
Century JJ-2. and according to
distribution vice president Frank E.
Cahill Jr.. is unique in design with
film traps and film gates with direct
coupling to the mechanism and opti-
cal sound reproducer with a Poly
"V" motor drive belt to the projector
main drive shaft.
Both the film trap and gate can
be easily removed for changing, in-
spection and cleaning without dis-
turbing any other units.
The Century designed water-cell
and aperture plate are positioned in
the projector so the film is as close to
the aperture plate as desired for
sharper focus all around the edges.
It is also possible to "set" the film
gate to provide a soft edge aperture.
With these new film traps and film
gates it is possible to run both 70mm
and 35mm films with ever-so-lisht
ims
tensions for better overall in-focus
picture. Film tensions can be easily
adjusted and set to the desired posi-
tions for optimum screen results.
A less complicated method has
been engineered into the Century
JJ-2 for changing from the standard
24 frames per second to 30 frame
speed.
Conversion kits are available to
adapt 3-D Sync projection if and
when needed.
Century's features are incorpor-
ated in Century JJ-2 models such as:
double rear shutters; water-cells;
separate 70/35mm Ampex magnetic
clusters; less gears and other Cen-
tury refinements. iP
New Theatre Opens
In New York
Walter Reade-Sterling. Inc., has
opened a new theatre, the Continental
in Forest Hills, N. Y. in the populous
and fast-growing Borough of Queens.
DO YOU BUY
fled
T^^U ON PRIC
ON PRICE OR COST?
2-YEAR COATING
GUARANTEED FIRST SURFACE
DICHROIC REFLECTORS
They're a bargain because everything an ordinary
reflector does TUFCOLD does better and longer. That's
why they're worth more yet actually
COST 43% LESS
based on life expectancy. So, since your old reflectors, by wasting power,
carbons, and light, cost more than new TUFCOLDS, replace them now.
THE STRONG ELECTRIC CORPORATION
31 City Park Avenue • Toledo 1, Ohio
16
Architect John J. McNamara de-
signed the new deluxe 600-seat
motion picture theatre. The Contin-
ental is of split-level construction,
is believed to be the first theatre in
the U. S. with its own roof-top park-
ing, and has a permanent art gallery
for the exhibition of works by Queens
artists.
The Continental opened March 21
and it will operate on a first-run
policy. Its inaugural attraction was
the screen version of "The Balcony"
starring Shelley Winters, Peter Falk
and Lee Grant. Incidentally, The
Continental shared the world pre-
miere of "The Balcony" with 20
other theatres in the greater New
York area.
Capital Motion Supply Corp., of
New Y®rk, supplied and installed the
specialized theatre equipment, con-
sisting of two Century projectors
complete with full Century transis-
torized sound equipment; Peerless
Magnarc arc lamps, Kneisley silicon
rectifiers, two sets of Bausch & Lomb
lenses, and Neumade rewind equip-
ment. VP
NEW ENTRY...
Kinoshita offers the
70/35 mm Japanese
Projector in U, S.
NEW YORK — Kinoshita & Co.,
Ltd., USA will distribute in the
United States the Japanese projec-
tion and sound equipment made by
the Nichion Co., Ltd., Tokyo and
Osaka.
The Pherex Crown-S 70/35mm
projection equipment was shown in
the New York office of the Kinoshita
company. The Nichion company's
managing director Nakama explained
the projector.
The all purpose projector comes
with a 70/35 head machine, water
and air cooling: magnetic sound-
head; 35mm conversion kit; Phirex
optical soundhead with drive motor;
two 70 mm film pressure band; two
35mm pressure band; exiter lamp;
upper magazine: lower magazine;
70/35 reel; Super Prominar 70,
70mm projection lens, Phirex pedes-
tal.
The Nichion company makes a
Cineron Xenon lamp equipment in
5kw and 4kw power, and the makers
said a life of 1,500 hours for 5kw is
expected. iP
International Projectionist April 1963
New Film Equipment
At SMPTE Meeting
Demonstration* of new camera.
lighting projection, editing and TV
equipment will hold the stage at the
April 2 1 morning session of the semi-
annual convention of the Society of
Motion Picture and Television En-
gineers at the Travmore. Atlantic
City, April 21-26.
Eight engineering committees will
meet during the convention. Commit-
tees have been appointed by Dr.
Deane R. Vt bite, associate director of
du Ponts Photo Products research
laboratory, who is SMPTE engineer-
ing vice-president. Dr. White and
SMPTE Staff Engineer Alex E. Alden
aranged the schedule of meetings.
Committee chairmen are:
Laboratory Practice. William D.
Hedden. Vive-President, Calvin Pro-
ductions. Inc. Kansas Cit) : televi-
sion. William T. \\ intringham, Bell
Telephone Laboratories. Murrav Mill.
\. J.: lumm and f Engineering Laboratories.
Bell & Howell Co.. Chicago: color.
Dr. LeRoj M. Dealing. Studio City.
Calif.: film projection practice: C. E.
Heppberger. National Carbon Co.,
Chicago; sound. J. L. Pettus. RCA.
Burbank. Calif.: instrumentation and
high-speed photography, Morton Sul-
tanoff, Terminal Ballistics Labora-
tory, Aberdeen Proving Ground,
\ld.: film dimensions. Walter C.
Brandsma. E. I. du Pont de Nemours
8 Co.. Inc.. Parlin. N. J.
Also meeting during the week will
be committees planning subsequent
convention papers programs, the
board of editors of SMPTE's Journal.
an dadministrative committees.
BACK NUMBERS, ANYONE ?
Homer Neal, Jr., of Columbus,
Ohio, an IP subscriber for 16 years,
has a two-foot stack of back num-
bers he wishes to sell. Interested per-
sons should contact Neal direct.
His letter to IP follows:
"Until a few months ago I was
a subcriber to IP continuously since
1945, except for a while in 1951.
Your magazine has served me well
and I value it. Now that I no longer
have a need for it, I know that this
two-foot stack has value to others.
Would you be kind enough to
mention in IP that I would like to
sell these for a reasonable offer?
"Best wishes and kindest regards,"
HOMER NEAL, Jr. (386)
867 Wainwright Drive
Columbus 24, Ohio
International Projectionist
NEW YORK — SOS Photo-Cine-
Optics. Inc. announces that Alan C.
Macauley and Jan T. Macauley to-
gether recently acquired approximate-
ly 53% of the outstanding common
stock of the company. Eight years
ago, the Macauleys opened an office
in Hollv wood and became the first
representatives for SOS in the 13
western states. Prior to 1955, the
Macauleys were actively engaged in
the motion picture production bus-
iness.
Alan Macauley has become a di-
rector of the companj and its new
president. Joseph A. Tannev. who has
been president of SOS since its found-
ing 37 years ago. has become chair-
man of the board. The other new of-
ficers of the compan) are: Dominick
J. Capano, vice president and general
manager: William H. Allen, engineer-
ing vice president and secretary; and
Jan T. Macauley, treasurer. Mr. Ca-
pano and Mr. Allen have each been
with the company for over 25 years.
Claude C. Pitts has been engaged as
sales engineer with headquarters in
the Hollywood office.
S. O. S. Shows Auricon
Camera Improvements
NEW YORK — Two new improve-
ments for the Auricon Camera have
been announced by S.O.S. Photo
Cine Optics. These are balanced cine-
voice conversion and an improved
transisto-sound amplifier with an
exclusive built-in limiter. They will
be demonstrated at the SMPTE Con-
\ ention.
Levine, Mage Constructing
New York "Intimate" Theatre
\K\\ YORK— Joseph E. Levine.
president of Embassj Picture, in as-
sociation with James I. Mage, film
producer and exhibitor, are construct-
ing an intimate theatre on 57th St.
near Fifth Ave.
The name will be Festival Theatre.
and it will seat (>()(! patrons. The
Festival is scheduled to open June
I ■>. with the American Premiere of
Fillini's "!! '■_."*. a Joseph E. Levine
presentation and an Embassy release.
Simon B. Zelnik. New York archi-
tect, has designed the Festival Thea-
tre, which is in an existing building.
The facade will be of colored Dur-
anodic aluminum, with a "'flower-
box" arrangement projecting from
the building above the lobby en-
hance, to make it blend with the rich-
flowing architecture of the build-
ing it occupies.
There's Plenty for You At
CENTURY!
. . and from CENTURY only
dramatic, New ALL TRANSISTOR
sound systems
'True high-fidelity,
distortion free.
'Low installation cost,
minimum space needs.
Increased reliability,
less maintenance.
No vacuum tubes, no
photoelectric cells.
and the only American-made 70 mm 35
theatre projection systems
SEE
YOUR CENTURY
DEALER
. . . for bigger, brighter projection.
CENTURY PROJECTOR CORP.
New York 19, N. Y.
April 1963
17
vertical aluminum screen in
a drive-in wastes li^ht by re-
flecting it up into the sky.
Projection
building"
QJor maximum picture brightness, an
aluminum screen should be tilted to
race the projection axis sauarely.
Drive-In Projection . . . from page 6
tilted, of course), the corresponding maximum widths
are 60 and 70 feet. Just imagine indoor projection qual-
ity on a drive-in screen! It is easily possible to have
brilliantly lighted pictures in the smaller drive-ins and
to fill these theatres every night with satisfied patrons.
Although we have implicitly specified the use of
modern projection mechanisms, modern "fast" lamps,
and coated "fast" lenses for drive-in use in order to
achieve satisfactory light levels, we have purposely
avoided being too specific or dogmatic.
Slight departures from optimum lamp or lens speed
can usually be compensated by the use of projector
shutters having the blades trimmed especially for drive-
in use, a small increase in arc current, the elimination
of light-wasting heat filters in favor of cold mirrors,
the elimination of projector-port glasses, the use of a
more highly reflecting or slightly directional screen
surface, etc.
Lumen and Lamp Calculations
The lumens of projector light output required for
any particular footlambert light level (e.g. 4.5 or 10
f ootlamberts ) may be easily calculated when the width
of the projected picture and the reflectance of the
screen are known. A safe figure for the reflectance
of a good white-painted matte screen is 0.85, and that
for the on-axis reflectance of an aluminum screen is
1.5. (These correspond to reflectivities of 85% and
1 50 % , respectively . )
For the reflectance or gain of an unusual screen
paint or surface, consult the manufacturer of the ma-
terial.
The "screen area" ( in square feet ) needed in the
following formula is found by multiplying the width
of the projected picture by three-fourths of the width
of the projected picture. This gives the projected-
picture area on the basis of the standard Academy
35-mm aperture (0.600" x 0.825"), and should be used
in this formula even though a widescreen aperture is
used in actual projection. The reason for this is simply
that lamp lumen ratings are nearly always specified on
the basis of the Academy aperture. To repeat, just
ignore the fact that you are using a widescreen aper-
ture, and carry through the lumen calculation on the
basis of the standard Academy aperture, as directed.
Area x Desired footlamberts
Lumens = 5 j, — :
screen retlectance
When you have thus calculated the required projector
light output in lumens for the desired footlambert
brightness level, you are ready to select an arc lamp,
carbon trim, and amperage to supply this number of
lumens. But note that the lamp and carbon screen-
lumen ratings published by manufacturers and trade
papers are for projectors without any shutter (that is,
not running ) , whereas the above formula gives the
number of lumens with the shutter running. Screen
brightness standards always specify that the projector
be running, but without film, when the light is measured.
Therefore, to correlate the lumen result you get by
using the above formula with manufacturers' screen-
lumen ratings, multiply your result by 2. This is valid
because the average projector shutter halves the amount
of light reaching the screen — a shutter transmission of
50%.
Lamp, carbon trim, and arc-current light output
data in lumens are furnished by the Strong Electric
Corp., 87 City Park Ave., Toledo 1, Ohio for lamps
of their own manufacture, by the National Carbon Co..
30 East 42nd St., New York 17, N. Y. (Bulletin No. 3 K
and by the very complete and trustworthy tables in the
article titled "Screen Light Requirements in Modern
Projection, Part I" in IP for June 1959. Consult any
or all of these sources, but reject all suspicious or
unverified advertising claims.
Example Shows How Simple It Is
Suppose that you are operating in a small drive-in
having a 60 ft. white-painted screen of about 0.85 re-
flectance, (a) How many lumens of light (projector
running without film ) are needed to give the drive-in
minimum of 4% footlamberts of brightness? (b) What
lamps, carbon trims, and currents will serve to give
this screen brightness?
The area of this 60-ft. screen ( on the basis of the
Academy aperture, as explained above ) is 60 x ( 0.75
x 60) = 60 x 45 = 2,700 square feet. Therefore:
2,700 x 4.5
Lumens = ^
= 12,150/0.85 = 14,294 lumens
(a) This result may be "rounded off" to 14,000
lumens. Because lamp and carbon light outputs are
measured without the projector shutter running, we
should select a carbon-trim and current combination
rated at approximately twice 14.000 lumens, that is.
28,000 lumens.
( b ) Consulting any of the available trustworthy
lamp and carbon tables, we find that 28,000 lumens
( approximately ) are supplied by ( 1 ) an 18-inch mirror
lamp burning 11-mm regular positives at 120 amps.,
(2) by an 18-inch mirror lamp burning 10-mm Hitex
positives at 125 amps., or (3) by an 18-inch mirror
lamp burning 13.6-mm regular positives at 145 amps.
The projection lens should be coated and of f/1.9 — f/1.7
speed.
The accompanying table gives suggested carbon
sizes ( regular carbons only except for blown arcs ) and
currents which, burned in modern large-mirror lamps
used with projectors having f/1.9 or f/1.7 coated
lenses, will give 4% and 10 footlamberts of brightness
on 85% white and 150% aluminum screens. This table
is intended to be only suggestive, but may neverthe-
less be used as a trustworthy guide in the correction
of the serious lighting deficiencies which prevail in
far too many of the nation's drive-in theatres. Because
no account was taken of side-to-center screen light dis-
tribution in the computation of this table, it favors a
slightly brighter-than-minimum-standard light level at the
center of the screen, which is all to the good. iP
{TO BE CONTINUED)
18
International Projectionist
April 1963
America's First and Oldest Motion Picture Trade Journal
Established 1914
- GREATER AMUSEMENTS -
News about the motion picture industry, new products
and new methods, for exhibitors and projectionists alike.
John
mufffljf/jr
* ^fflfc*!' ft *
20th
r? *°^xz: ^
GREATER AMUSEMENTS supplies an every-theatre audience to the na-
tion's motion picture industry, features equipment, theatre projection and
film servicing products of interest to the projectionist who wants to keep
up with the general news of the industry.
YOU NEED only one publication to inform you about the other side of
the theatre picture — for $3 a year, 26 issues, plus a special introductory
rate to subscribers to International Projectionist.
PUBLICATION OFFICE
1645 Hennepin Avenue
Minneapolis 3, Minn.
FE. 2-8401
NEW YORK OFFICE
Suite 410
545 Fifth Avenue
New York 17, N.Y.
MU. 8-7746
WEST COAST OFFICE
1206 N. Orange Grove
Hollywood, Calif.
jQ®W7 0® '
®(°][IDQD@@D®D0
^K\
on
°lc^^oUtnake
*Ure ti«t uou I,
&°" have a,
C/ea" House
^'°rtao/e Seat/ng
^ ***** Ff0nt
Courteous Em i
"~~*"' wkat
irt
n^mIm
4*0*).
S3
ca
Which projection lamps should you be using? It depends on one that exactly matches your requirements — the one that ■will
several factors — size and type of screen, length of throw, size project ever-so-much brighter pictures in your theatre. Your
and shape of the viewing area. patrons will SEE the difference.
The complete line of Strong projection arc lamps includes the
WRITE FOR LITERATURE
THE £%0f& ELECTRIC CORPORATION
\^^ 31 CITY PARK AVENUE • TOLEDO 1, OHIO
"The World's Largest Manufacturer of P r ojection Arc Lamps"
INTERNATIONAL
Drive-ins
Deserve
Good
Sound
Europe's most
luxurious theatre
MPAA SCREENING
ROOM HAS
EVERYTHING
J. Al Pratt, MPO Local 224 of
Washington, DC, discusses the op-
eration of his Century Projector
Corp. 70/35mm projector with J.
William Garcia, also of the Wash-
ington IATSE local. Story on page 10.
I
■
1
Cont
Copj
/
o
w.%
&
%r\
X
1
',
ss©o3uoq jo £reaqx!
MAY
VOLUME 38
40c A COPY
1963
NUMBER 5
$3.00 A YEAR
A Scene From America's Projector Carbon Center...
Pyrometric cones accurately check baking cycles
" This sure-fire test is one of the ways we
know a projector carbon is perfectly baked"
^■k*V^Bk^
This photo isn't an abstract
rendering of an artist's idea. It's
a picture of one of the many
important steps in projector
carbon production at our Fos-
tOria, Ohio, plant. Jim Hoynes
These three-sided figures are called pyromet-
ric cones. Because they react in a predeter-
mined way to high temperatures, we use them
to help tell us exactly when National projector
carbons have reached the end of their baking
cycle.
When one cone is leaning and the other is
sagging, we know it's time to remove the pro-
-says JIM HOYNES
National Carbon Sales Engineer
jector carbon material from the baking furnaces
for cutting and further processing.
Every step of the baking cycle, of course, is
constantly watched over by standard heat
checking instruments, such as thermocouples
and highly sensitive optical devices.
In the manufacture of top quality projector
carbons it is very important to know the precise
moment they reach the peak point in baking.
That's why at Fostoria we take every precau-
tion in quality control to provide theatres with
perfectly baked carbons. Only the finest quality
can give movie audiences the finest screen light-
ing—indoors or outdoors.
Contact
Mr. National Carbon
UNION
CARBIDE
"National" and "Union Carbide" are registered trade-marks for products of
NATIONAL CARBON COMPANY
Division of Union Carbide Corporation • 270 Park Avenue • New York 17, N. Y.
In Canada: Union Carbide Canada Limited, Toronto
INTERNATIONAL
PROJECTIONIST
Including a special Audio-Visual section relat-
ing to the operation and maintenance of A-V
equipment in the educational and industrial
fields.
Volume 38 May, 1963 No. 5
FRANK W. COOLEY, JR.
Editor and Publisher
RAY GALLO
Executive Publisher
AL BLOOM
Managing Editor
TOM KENNEDY
Equipment Editor
RAY GALLO ASSOCIATES
National Advertising Representatives
545 Fifth Avenue, New York 17, N. Y.
Telephone Murrayhill 7-7746
(Area Code 212)
IN THIS ISSUE
Good Sound for Dnve-lns
By ROBERT A. MITCHELL
The Cover Story
Exhibitors Must Remodel
Core-Lite Evaluations
New Century Projector
News Notes — Technical Hints — Miscellaneous Notes
10
12
13
14
INTERNATIONAL PROJECTIONIST, published monthly by the
International Projectionist Publishing Co. division of The
Northern Publishing Co., Post Office Box 6174, Minneapolis
24, Minnesota. Editorial offices, 1645 Hennepin Avenue,
Minneapolis 3, Minn. Subscription Representatives: AUS-
TRALIA— -McGills, 183 Elizabeth St., Melbourne; NEW
ZEALAND — Wixon's, Ltd., 64 Courtnay Place, Wellington;
ENGLAND and ELSEWHERE — Wm. Dawson & Sons, Ltd.,
Macklin St., London, W. C. 2. Subscription Rates: United Stotes,
Canada, and U. S. Possessions, $3.00 per year (12 issues) and
$5.00 for two years (24 issues). Foreign countries: $4.00
per year and $7.00 for two years. Changes of address should
be submitted four weeks in advance of publication date to
insure receipt of current issue. Second-class postage paid at
Minneapolis, Minn. INTERNATIONAL PROJECTIONIST as-
sumes no responsibility for personal opinions appearing in
signed articles, or for unsolicited articles. Entire contents
copyrighted 1963 by INTERNATIONAL PROJECTIONIST
PUBLISHING CO.
MONTHLY CHAT
Craftsman Taken for Granted
The projection booth houses the most expensive the-
atre equipment, and the projectionist rules over this
costly inventory.
The theatre owner or the house manager have not
the skills to adjust and clean the booth equipment. That's
up to the projectionist. The good craftsman treats his
machines like a baby, because he knows he is in charge
of costly machines, and that dust grinds down his
delicate parts in his equipment.
Electrical contacts get dirty, so he cleans them.
The lamp reflectors get pitted and grimy and the
lamphouse must be cleaned.
\nd the same goes for the sound system with its
electrical contacts.
The booth craftsman has the responsibility for the
inventory of spare parts and outside service, if needed
to repair the equipment under his care.
To insure proper and smooth operation, all projectors
should be kept clean and well lubricated and in proper
adjustment. Cleaning should be carried out as a daily
routine. Otherwise the hardening of lubricating oils
under the heat of the projection lamp will bake onto
any surface, and that is difficult to remove.
The modern projector requires very few adjustments,
but the daily routines of the hoothmen are an important
chore. They include the timing of the shutter, focusing
the lens, proper tension of the film path and other parts
of the projector.
The condition of the projector and soundhead
sprocket teeth should be carefully inspected at frequent
intervals, and if there is any visible undercutting of a
small notch at the base on the contact side of the teeth,
the sprocket should be replaced, as any teeth consider-
ablj reduced in width at their base will cause an unsteady
picture and will damage the sprocket holes in the film.
The lamp optical surfaces should he kept clean and
a regular routine before the day's program begins is a
must, feed relay contact points should be checked regu-
larly, and cleaned with fine sandpaper if any sparking
is visible. Persistent arcing across the relay points is
the warning sign that the resistor bridging has de-
teriorated and should be replaced. If the relay contact
is faulty then noise gets in the sound system. This calls
for cleaning the relay points and adjusting the tension,
and in extreme cases for installation of filter condensers
connected with either across the points or from each
point to ground. All moving parts of the lamphouse
should be carefully lubricated.
Rectifiers of the bulb type requires these procedures:
keep the rectifier clean and dry, clean the bulb and
socket contacts periodically with 00 sandpaper, keep
all connections tight, pre-test all spare bulbs.
The soundheads must be kept clean, and the face
of the photocell must be optically clean; any oil should
be thoroughly cleaned off or it will attack the rubber
insulation of the photocell wiring.
Those are a few fundamentals which projectionists
well know, they are cited here because the theatre owner
or the house manager does not have the skills and know-
how that the projectionist has to know about this com-
plex machinery before he goes on the job.
(Continued on Page 9)
International Projectionist May 1963
Volume 38
INTERNATIONAL PROJECTIONIST
May, 1963
Number 5
Good Sound for Drive-ins
The Paramount Consideration in motion-picture
pi ejection is the quality of the picture itself — its bright-
ness, uniformity and color of illumination, clarity of
focus, reproduction of photographic contrasts, and rock-
steadiness. The movies are primarily a visual art; and
the picture on the screen is what the public pays for
at the boxoffice. Nevertheless, the quality of the sound
reproduction must in no wise be relegated to second
place, for sound and picture go together to create a life-
like illusion and to tell a story in audiovisual terms.
Bad sound reminds the audience that it is only looking
at a picture.
There are important technical differences between
the reproduction of sound in a drive-in, with its hun-
dreds or thousands of separate speakers, and the pro-
duction of high-fidelity sound in a conventional the-
atre. The management of an indoor theatre need con-
sider only one "focal point" of sound reproduction,
namely, the stage-speaker installation which provides
the sound for every patron in the house. The system of
amplifiers is built up to match a speaker assembly having
a power capacity and sound-radiating characteristic best
^Matching
transformer
Speaker
voice
coil
i — wmrm
Rheostat
volume control
Ivlatching
transformer
Speaker
voice
coil
Potentiometer
volume control
for constant impedi
ance
/
FIG. 3 — A potentiometer is preferred to a simple rheostat
for an in-car speaker volume control because of its constant
impedance and load on the sound amplifier regardless of
volume setting.
4
By Robert A. Mitchell
suited to the size and acoustic properties of that partic-
ular auditorium.
Adequate Sound Power Essential
A drive-in theatre must not only have amplifiers of
sufficient power output to provide an adequately strong
sound signal to all of its many hundreds of individual
in-car speakers, but should also have a reserve power
which will minimize the "power robbing" effects of
accidental variations in electrical load. Such variations
are certain to occur when the speaker volume controls
are of the simple rheostat, rather than the constant-
impedance potentiometer type.
The in-car speakers purchased for drive-in use should
be large enough to give an acceptably strong reproduc-
tion of the low-frequency bass tones in the sound. In no
case should the cone of the speaker be under 4 inches in
diameter: 5-inch cones are recommended, though the
quality of the sound reproduction by a speaker does not
depend on the size of the cone alone. It should always
be remembered that the smallest, cheapest speakers re-
quire more watts of power from the amplifiers to give
the same volume of sound, that they usually give "tinny,"
distorted sound, and that they are constructed in such a
way that it is impossible to re-cone or otherwise repair
them. Speakers of good quality are more economical
in the long run, and certainly satisfy the patrons in a way
that cheap speakers can never do.
Assuming an average consumption of 0.25 watt by
each speaker and associated matching transformer (mea-
sured at 1000 cycles, 90 per cent soundtrack modula-
tion), the following amplifier power outputs should be
provided for drive-ins of various sizes:
400-car theatres, 100 watts.
500-car theatres, 125 watts.
600-car theatres, 150 watts.
800-car theatres, 200 watts.
1000-car theatres, 250 watts.
1200-car theatres, 300 watts.
1500-car theatres, 375 watts.
2000-car theatres, 500 watts.
In addition to the amplifiers needed to supply the
minimum required audio power, there should be at least
one stand-by amplifier of 25 watts output for emergency
use. An amplifier of this size is large enough to serve
100 cars ( 1 to 4 ramps) in the event of amplifier break-
down.
Each drive-in speaker is powered through a matching
transformer usually located in the junction box on the
speaker post. Accidental short circuits in the speakers
or their connecting cords cannot, therefore, render other
speakers on the same ramp inoperative.
Leeway in Impedance Matching
The way the speaker-matching transformers are inter-
connected depends upon the impedances of their primary
(input) windings and upon the output impedance of the
International Projectionist May 1963
power amplifier serving them. The total impedance of a
number of individual ""loads'" is greater than the in-
dividual impedances when thev are connected in series.
less when thev are connected in parallel.
For the maximum transfer of power, the two im-
pedances, source and load, must be of equal ohmic value.
If the "'load resistance" has a value (ohms) substantially
lower than the impedance of the source, the current
(amperes) flowing through the circuit will be relative!)
great, but the load voltage drop will be small. Electrical
power in watts is found by multiplying amps, by volts:
and in a case like this flow voltage, high amperage I .
the watts of power expended in the load resistance will
be small.
On the other hand, if the load resistance has an
ohmic value substantial!) higher than the impedance of
the source, the voltage drop across it will be great, but
the amount of current able to force its way through the
high resistance will be small. Here we have a case of
high voltage and low amperage: and the mathematical
product of amps, times volts equals watts will again be
small.
When the ohmic resistances are equal, however, the
watts of power obtained bv multiplying the voltage drop
across the load bv the current in the circuit will be at a
maximum. Matched impedances accordingly permit the
maximum transfer of power. \everthele>s. quite a bit
of leeway in the match of ohmic values is allowable. One
impedance mav have a resistance I ohms i as low as one-
half that of the other, or as high as twice that of the
other, and the power loss through mismatch will amount
to only about 10 per cent. This is well below the maxi-
mum power variation which can be detected in sound
reproduction bv the human ear.
Rad mismatches between sound-circuit components
have a much more serious effect than the mere loss of
audio power, however. The impedance of transformer
coils and the voice coils of speakers varies with the
frequency of the audio signal. When we say, for ex-
ample, that a certain speaker has an impedance of 6
ohms, we mean that the voice coil of the speaker has
a resistance of 6 ohms to AC at a frequency of 1000
cycles per second. The resistance will be less than 6
ohms at lower frequencies, and higher than 6 ohms at
higher frequencies. Now. if a speaker or its matching
transformer is improperly matched to the output trans-
former of the amplifier, the frequency characteristics
of the system will be altered. The result is distorted,
unnatural sound.
It is generallv believed that the human ear is unable
to detect harmonic distortions in sound reproduction
amounting to less than 5 per cent of the total power
output. Distortion is much reduced in certain amplifier
circuits bv the use of deliberate impedance mismatching!
For example, it has been found that second-harmonic
distortion is greatly reduced by making the impedance
of a load resistance about twice as great as the plate
resistance of the tube supplying it.
By a thoughtful choice of impedances and by the
use of degenerative feedback, modern theatre amplifiers
have an overall distortion factor of less than 2 or 3
per cent. A drive-in theatre absolutely requires ampli-
fiers of the same high quality as those used in indoor
theatres.
Speakers Weak Link in Chain
Drive-in sound seldom equals the high quality of
good indoor-theatre sound even when the very best
amplifiers are used. As in all sound systems from the
International Projectionist May 1963
jwtmr
#1
jwwwwv-
*3
Impedances in series:
R= Rx+ Rz + R3+ . . .
R\ Rz /?3
Impedances in parallel:
FIG. 1 — When impedances (resistors, transformer wind-
ings, speaker voice coils, etc.) are connected in series, the
total impedance in ohms is the simple sum of the indi-
vidual impedances. When connected in parallel, however,
the ohmic values of individual impedances are each divided
into 1, the quotients added, and the sum divided into 1.
Thus three 25-ohm resistors in series have a total impedance
of 25 + 25 + 25 = 75 ohms; in parallel, 1/(1/25 + 1/25
+ 1/25) = 1/0.12 = 8.33 ohms.
mightiest public-address system to the smallest home
"hi-fi." the speaker, itself, is the weakest link in the
chain of sound components. Even when the amplifiers
introduce no perceptible distortion in the reproduction,
the sound may have a slightly unnatural quality. This
is due entirely to distortions arising in the speaker.
Because a loudspeaker is a mechanical device as well
as an electrical one, it is extremely difficult to design
one which perfectly translates the fluctuating sound-
signal currents into air-pressure waves.
It is therefore unfair to expect an "unbaffled" drive-
in speaker having a 4-, 5-, or 6-inch cone, and no
separate "woofer," or low-frequency unit, to equal the
sound-reproducing quality of a large and carefully engi-
neered indoor-theatre speaker assembly. But in spite of
these unavoidable physical limitations, we have a right
to expect acceptably good sound in the drive-in theatre.
In-car speakers should be specially designed and
constructed for drive-in use. Cheaply priced speakers
"adapted" from units originally designed for small
radio sets or phonographs are unsatisfactory in almost
every respect. Drive-in speakers should be completely
waterproof in order to resist the effects of the rain
and damp weather to which they will be exposed. They
must also be reasonably heat-resistant — the summer
sun is sometimes hot enough to fry an egg! And last
but not least is ruggedness. In-car speaker units must
hold up under the rough usage that the rank and file
of the public accords to property not its own.
Spare Speakers and Amplifiers
Prospective purchasers of in-car speakers should
make certain that the units they intend to buy have
constant electrical impedance regardless of the setting
250
£ 200
IA
c
? 175
Jj 150
O
0-125
<0
.^ 100
u
-P
ju 75
o
$
50
25
10
20 30 40 50 60 70 80 90 100
Ohms load resistance for 10-ohm source
FIG. 2 — This graph reveals that the maximum transfer of
electrical power (watts) is achieved when "source" and
"load" impedances are the same. It is here assumed that
the source impedance is 10 ohms; the number of watts
developed when different load resistors are used may be
read from the curve. Thus a 10-ohm load resistor gives a
maximum power of 250 watts; both 5-ohm and 20-ohm
loads (one-half and twice the source impedance, respec-
tively,) give 221.77 watts.
of the volume control. In other words, the volume
control should be of the potentiometer, not the simple
rheostat, type. If a simple dead-end reostat is used,
the load on the amplifiers will increase with the number
of speakers turned up loud, thus causing annoying
variations in system output and, worse, in the fre-
quency characteristics of the system.
No matter how much is done to prevent it, a num-
ber of speakers are damaged and stolen every season.
Deliberate theft cannot be prevented if the larceny-minded
patron brings along a pair of wire cutters. Accidental
severance of speaker cords can nevertheless be min-
imized by using waterproof coiled cord instead of the
ordinary flexible cord which may loop down and catch
on automobile bumpers and door handles.
A number of spare in-car speakers are an absolute
necessity to avoid losing parking spaces when some-
thing goes wrong with speakers previously installed.
To play it safe, there should be at least one spare speaker
for every hundred speaker posts. The projectionist must
also have a spare speaker known to be in perfect work-
ing order for his own use in checking ramp and junc-
tion-box circuits — this in addition to the permanently
installed projection-room monitor speaker.
We do not believe that it is desirable to complicate
the sound wiring to the extent of having a separate
on-off switch for each and every ramp, together with
loading resistors to preserve system impedance; but it
is certainly necessary to provide switching for each
individual power amplifier.
The most convenient arrangement is a plug-in switch-
board having one heavy-duty plug for the output term-
inals of each amplifier. If, for example, there are four
amplifiers, there must be four output plugs, each supply-
ing audio power to one-fourth of the drive-in. The plug
arrangement permits very rapid replacement of an ailing
amplifier with an emergency stand-by amplifier of the
same type and power output. (Two other plugs must also
be provided for each power amplifier, one for the
current which operates the amplifier, and the other for
the sound input from the preceding driver or voltage-
gain stage.)
Even though the plug-in arrangement is preferable
for drive-ins in which all the equipment is removed at
the end of the season and re-installed at the opening of
the next one, permanently wired emergency amplifiers
connected through a main switchboard are recommended
both for indoor theatres and for those drive-ins in
southern climates which operate the year around.
The presence of a spare power amplifier in good
working condition does much to reduce the projectionist's
worries, to prevent ticket refunds because of sound loss,
and to allow repairs to the sound system to be made in a
careful, unhurried manner in the daytime instead of
under stress and the pressure of time while a show is in
progress.
Sound Service Indispensable
The services of a good sound-maintenance organiza-
tion are a "must" because the projectionist, already
burdened with the duties involved in his work, cannot
rightly be expected to jeopardize the condition of films
and equipment or the presentation of the show to
"double" as a sound engineer. Sensitive electrical ad-
justments in amplifier circuitry, the correction of noise
and distortions arising from electrical, optical, or mech-
anical causes, and the balancing of amplifier outputs are
not normally a part of the projectionist's job.
It is nevertheless quite proper for the projectionist
to familiarize himself with the types of vacuum tubes
used in his system, and with the locations of their
sockets in the rectifier and amplifier units. A full com-
plement of all rectifier and amplifier tubes, together
with soundhead photocells and exciting lamps, should
be stored in the supply cabinets ready for instant use.
And do not forget spare fuses!
It is very doubtful that frequent or routine sand-
papering or burnishing of vacuum-tube prongs is at all
necessary. The prongs of tubes are made of a plated
alloy which does not corrode. If the prongs are wiped
clean when the tubes are inserted into their sockets,
and if the socket contacts are sufficiently tight to begin
with, the amplifier tubes can be left alone during the
season — except, of course, for the testing and replace-
ment of the few tubes which may go bad or be sus-
pected of defects.
If at any time the tubes are removed from an ampli-
fier chassis for the purpose of cleaning it, cover the
prong holes of the tube sockets with strips of mask-
ing tape or "Scotch" tape to prevent dust and dirt from
going inside the chassis through the holes.
Big Power Tubes Have Shortest Life
Transistorized preamplifiers and voltage-gain "driv-
ers" eliminate tube troubles and filament ("A") circuits
from the first two stages of the system, and also re-
duce hum and distortion due to "microphonic" and
gassy tubes.
The power amplifiers, on the other hand, usually
employ vacuum tubes to provide the audio power (watts)
required by a large number of in-car speakers. Power-
gain tubes are larger and more expensive than voltage-
gain tubes, and they get rather hot in operation. They
are more likely to deteriorate and cause distortion than
International Projectionist May 1963
are the voltage-gain tubes. But the faint bluish glow
sometime- seen in power tubes, and which flickers with
the varying le\el of the sound being reproduced, is en-
tiieU normal and does not necessarib indicate exces-
sive "gassines9.
Except for the replacement of noisj volume-control
potentiometers, damaged in-car speakers cannot ordinar-
ill\ be repaired in the theatre, but must be sent to a com-
panj specializing in speaker re-coning, i Write to the
manufacturer or to his distributor for advice before
\ou need work done! i V torn or punctured cone mended
with a patch of adhesive tape cut from a plastic Band- \'u\
will work temporarily, but it maj distort the sound b\
weakening certain frequencies and overemphasizing
others.
\ll speaker-post junction boxes should be brushed out
clean at the beginning of the season when the speakers
are connected, and again whenever damaged speakers
are replaced. \ weatherproof junction box of respon-
sible manufacturer is not likeb to admit enough dust
during the 3-to-5-month drive-in season to require mid-
season cleaning. Naturally, a "spot check" is a good
idea after a sandstorm or a spell of high winds which
mav stir up clouds of dust!
120 V Dangerous in Junction Boxes
\lo>t junction boxes are fitted with small lights
which permit the patron to locate the speakers easily
for removal and replacement on the hangers. Some
boxes also have additional lamps for signalling con-
cession attendant-. Ml of these lamps are ideally sup-
plied 1>\ a 2-wire system COmpletelj independent of
the sound circuitry, but in practice it is usual to have
a common-ground 3-wire system. Une of the three wires
is the "live" power wire for the post lamps, the second
is for the sound, and is connected to the speaker trans-
formers, while the third wire is the common ground
shared by both the lights and speakers.
It is recommended that 30-volt post lamps be used
when the 3-wire system is employed. A pressure of 120
volts presents a hazard which would become positively
dangerous in the event that the "earthed" ground be-
comes accidentia disconnected or electrically weakened.
A patron handling a speaker case or other conductor
connected to the common-ground wire might then re-
ceive a shock, or be seriously injured if he happens to
be standing on wet earth.
It is undeniably a time-consuming job to check all
of the speakers in a 1000-or-2000-car drive-in. Such a
check cannot be made every day without the help of a
special crew : but we do suggest that such a check be
made once a week, if possible, and all defective speakers
replaced from the stock of spares. Phonograph records
of good quality can be played in the projection building
to furnish sound during the time it takes to inspect
the speakers.
The care and servicing of the projector soundhead
units is. of course, exactb the same in a drive-in as in a
conventional theatre. The soundheads may need more
frequent cleaning because of the presence of gritty dust
in the air; but in-drafts which sweep dust-laden air over
the projectors can be minimized b\ using ground and
polished optical glass in the projector ports, and a good
grade of plate glass in the observation ports. iP
2»WE PROVED BYTEST...BYFARTHE BEST
Arc Lamps and Rectifiers for Every Projector... for Every Theatre... The World's Finest
HERE ARE THE FACTS
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designer. No other lamp has even re-
motely approached its perfection from
every point of view — mechanically, elec-
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air-conditioned system. Its durability and
stamina have been proved. More and more
fine theatres and drive-ins are re-equip-
ping with Ashcraft Super Cinex daily due
to their fine reputation for perfect screen
light and service. Current range with 1 3.6
mm carbon, 125-165 amperes.
CORE-LITE ... the latest and most
phenomenal producer of white light at
lowest possible operating cost in the fam-
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burner and arc controls as the SUPER-
CINEX. Same quality and built-in reliabil-
ity. The lamp is optically designed to give
greater white light distribution at less cost
for carbons and electricity. There is none
better— anywhere! 70-1 10 amp.
CINEX 35/70 SPECIAL .. .The
Great of the Ashcraft Arc Lamps is a modi-
fied Super Cinex. Like the Super Cinex no
third element or relay lens is necessary
regardless whether 35 mm or 70 mm film
is being projected. Uses a 13.6 mm
high intensity positive carbon at
current ranges between 1 25 and
1 40 amperes.
RECTIFIER ...THE SPECIAL CORE-
LITE 7 2 PHASE HIGH REACTANCE
RcCTIrltR . . . designed for the require-
ments of the Core-Lite lamp, this rectifier will
give the best results. Low reactance 6 phase
rectifiers should not be used. Certain motor gen-
erators, but not all, are acceptable. The specia
Core-Lite S/1212 rectifier will give you long,
excellent service with an absolute minimum of
expense. Other Ashcraft rectifiers available for
every power need. The cost is no more than for
inferior rectifiers.
SOLD EVERYWHERE IN THE UNITED STATES BY LEADING RECOGNIZED THEATRE SUPPLY DEALERS
;.S. ASHCRAFT MFG. CO., INC. • 36-32 38th STREET- LONG ISLAND CITY 1, N.Y.
eun \Tio.\AL Projectionist
May 1963
FRANKLY, YOU'RE DOING JUST THAT, if you're buying top-quality negatives-and "economizing" on prints. Fact
is: to do its job, a crisp, clear negative must have top-quality prints. Otherwise, your message falls flat and
you've wasted negative and print costs. Moral: Go Eastman all the way-negative and print-stock. And in the
case of questions - production, processing, projection - always get in touch with Eastman Technical Service.
I
losing dollars?
IE
For further information, please write or phone: Motion Picture Film Department,
EASTMAN KODAK COMPANY, Rochester 4, N. Y. Or-for the purchase of film:
W. J. German, Inc. Agents for the sale and distribution of Eastman Professional
Film for Motion Pictures and TV, Fort Lee, N.J., Chicago, III., Hollywood, Calif.
EA^TlvllAlSj FILM
The Cover Story:
Century Projectors at MPAA
This classically beautiful private screening room is in the offices of the Mo-
tion Picture Association of America in Washington, where under Eric Johnston
the American motion picture industry is represented to the world, and where
many pictures are evaluated as to their effect, and chances of success, in the
world market. The projection room is equipped with Century Projector Corp. s
70/35 projector, staffed by the MPO Local 224 gentlemen featured on the front
cover. This screening room entertains the leaders of the motion picture industry,
government officials, as well as diplomats from all over the world.
The Motion Picture Association of
America, Inc.'s screening room in
Washington, D. C. is one of the out-
standing screening rooms in the world
— in fact, those who have visited this
exquisite room come away with the
feeling that they have enjoyed Ameri-
ca's pastime (movies) in the atmos-
phere of a beautiful living room.
As for motion picture presentation
facilities, the MPAA projection booth
has everything from 16mm to 70mm
equipment.
The new Century American-made
70/35mm projectors as well as the
Century multiple 6-4-1 channel All-
Transistor sound equipment was sup-
plied and installed by H. C. Dusman
of the firm of J. F. Dusman Co. of
Baltimore, Md., established in 1912.
The Dusman Co. has been a Century
dealer for over 35 years. In addition to
the 70/35mm equipment, auxiliary in-
terlocks for 3D or separate sound heads
were installed, which makes this room
unique in every respect.
J. Al Pratt, consulting projection
engineer, member of Local 224 MPO,
was in direct charge of the installation
completed March 15, 1963. iP
10
J. Al Pratt, member of Local 224
M.P.O. congratulating H. C. Dusman
of J. F. Dusman Co., Century's Balti-
more dealer who sold and installed
the Century 70/35mm projectors and
the All-Transistor 6-4-1 channel sound
equipment.
EDITORIAL
from page 3
The projectionist in the smaller
and late-run theatres has to struggle
with damaged film, because the ex-
changes don't carefully inspect the
film that goes out to theatres.
The craftsman in run-down the-
atres struggles with worn-out pro-
jectors, lamp houses and sound sys-
tems.
It's a fine tribute to the projec-
tionist that many film theatre patrons
see tolerable pictures, and that's due
to the craftsman's skills and know-
how about wet-nursing these worn-
out projectors, lamps, sound system
and rectifiers. iS8
Ernest Lang, secretary of Local 306 and treasurer of the Projectionist Square
Club, New York, was presented with a Gold Card by the Club recently. Photo
shows Mr. Lang, Harry Apsel, president of Projectionist Square Club, pre-
senting the Gold Card to Lang; Steve DTnzillo and Harry Garfman, Local
306 business agents for New York and Brooklyn, and Izzy Schwartz, secre-
tary of Projectionists Square Club.
International Projectionist May 1963
Investment Opportunity
You are looking at a part of your employee benefit pro-
gram. It's part of your neighbors', too. And your suppliers'
and your customers' and your competitors'. It is there for
all Americans to enjoy.
A healthy economy is a bulwark of the freedom it sym-
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American businessmen like you can protect the invest-
ment you have in this benefit program by promoting the
Treasury's Payroll Savings Plan for U.S. Savings Bonds.
It makes for a strong America and a sound America. And
it engenders a sense of thrift and independence and con-
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of monuments like that set in the beautiful Black Hills.
When you bring the Payroll Savings Plan into your
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are investing in the most precious of America's natural
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and coasts that offer physical and spiritual recreation to us
and our children. You are investing in the heritage and the
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Don't pass this investment opportunity by. Call your
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Treasury Department, U.S. Savings Bonds Division,
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: in your plant... promote the PAYROLL SAVINGS PLAN for U.S. SAVINGS BONDS ||
The V. S. Government does not pay for this advertisement. The Treasury Department thanks, for their patriotism, The Advertising Council and this magazine,
INTERNATIONAL PROJECTIONIST
HEYER-SHULTZ
UNBREAKABLE METAL REFLECTORS
TOP SCREEN
ILLUMINATION
WILL NOT
PIT OR TARNISH
5 YEAR
GUARANTEE
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Theatre Supply Deafer
Manufactured by
HEYER-SHULTZ, Inc. cedar s,„vC, N. j.
How electrical noise is produced . • .
calculated . . . measured . . . controlled
Here are the basic facts about electrical noise — how it originates
in circuits . . . what terms describe it . . . how to measure it . . .
how to design circuits to minimize its undesirable effects. The
physical nature of the various sources of noise are clearly de-
scribed, including such sources as thermal agitation or resistance
noise . . . shot noise in vacuum tubes and semiconductor junctions
. . . noise from spontaneous emission of electromagnetic radiation
. . . and noise in gas discharges. This practical book also explains
auxiliary mathematical techniques, and discusses the relation of
signal and noise in various types of communication systems. For
ease in use, the simple tuned circuit associated with a device for
measuring average power is made the basic tool for analyzing
noise.
ELECTRICAL
270 pages, 6x9
105 illustrations
$10.00
By WILLIAM R. BENNETT
Data Communications Consultant, Bell Telephone Laboratories, Inc.
Each chapter in this helpful book begins in
a simple, practical manner and works toward
more complicated examples. For example, prop-
erties of thermal noise and its relation to black-
body radiation are deduced from basic laws
of thermodynamics and statistical mechanics.
You also will find a clear treatment of elemen-
tary quantum mechanics in discussions of the
maser and of noise in semiconductors. And, in
describing noise properties of various devices,
the book fills in your working background with
basic facts on junction diodes — transistors —
gas discharge tubes— klystrons— traveling wave
amplifiers— and others. Both independent and
dependent noise sources are analyzed.
In addition to the standard theory of noise
figure and its significance, a treatment is given
of the more comprehensive Haus-Adler theory
of noise measure. Throughout, the book stresses
the universality of noise-like phenomena. Noise
formulas for diodes and transistors; noise gen-
eration to meet specifications; design of ampli-
fiers for minimum noise effects— these and many
other topics "are covered. A comprehensive re-
view of noise in the various methods of signal
transmission such as amplitude modulation . . .
frequency modulation . . . and the different
kinds of pulse modulation is included.
12
CONTENTS
1. General Properties of Noise
2. Thermal Noise
3. Distribution of Magnitudes in Noise Sources
4. Noise in Vacuum Tubes
5. Noise in Semiconductors
6. Noise in Electromagnetic Radiation
7. Noise-generating Equipment
8. Noise Measurements and Techniques
9. Design of Low-noise Equipment
10. Application of Fourier Analysis to Noise
Problems
11. Noise in Communication Systems
INTERNATIONAL PROJECTIONIST
Post Office Box 6174
Minneapolis 24, Minnesota
Please send me a copy of "Electrical Noise"
by William R. Bennett. (I enclose $10.00.)
Name
Address
City & State ,.
CONSTANT FLIGHT . .
Exhibitors Must
Remodel Theatres,
Walters Says
DALLAS — Lou Walters of Lou
Walters Sales & Service here, con-
stantly emphasizes the need for many
exhibitors to remodel and refurbish
their theatres and install new equip-
ment.
"You have to spend money to make
money," Walters said. "How many
times have we heard this? Yet, we do
not heed this good advice. We hear
exhibitors complain every day about
bad business, when they could help
themselves considerably at the box-
office.
"A great deal of the equipment
most theatres are using is old, worn-
out and obsolete. This not only is
true in the projection room, but the
seats and carpets as well, and the
general appearance of the theatre is
run-down.
"There is nothing wrong with most
good pictures but that better projec-
tion would add to the boxoffice take.
Pictures that are poorly projected
with obsolete equipment don't do the
theatre any good. The customers soon
find a theatre with up-to-date and
modern equipment."
There is no question, Walters said,
that 70mm pictures are the best pro-
jection. "The sooner the theatre own-
ers realize this and equip the projec-
tion room with 70mm projectors,
the sooner they will reap the bene-
fits. We know the producers have,
in many csaes, put the same picture
on 35mm prints, but this is partly the
fault of the theatre owner for not
Lou Walters
International Projectionist May 1963
having equipped his theatre or the-
atres to run 70mm prints."
"' I here is," he said, "a difference
r in the two projected pictures and
there is also a difference in good
projection and better projection.
Main advantages are to be had in
the installation of 70mm equipment
for the indoor theatre such as mag-
netic sound reproduction which is
considered the best and. too. he gets
the benefit of the surround speakers.
I here is also a big advantage for
the drive-in theatres with their large
screens and long throw. That advant-
age i? light, which is so badh needed
in the drive-in theatre. The 70mm
projectors will improve the projec-
tion not only in increased light but
also with a sharper and steadier pic-
ture.'"
Walters also sa\s it is possible now
because of recent changes of the loan
rules in the Small Business Adminis-
tration enabling motion picture the-
atre- to lift low interest mone\ sim-
|)l\ bj applying to their local bank,
which will handle all necessary ap-
plication paper work for them. With
this money, the) can then re-equip
and refurbish their theatres.
Walters Sale- \ Service last year
moved to a new location. 1207 Lawn-
view We., Dallas 27. The company,
he said, has received dealer appoint-
ments from even manufacturer to
CURTAIN CONTROLS,
TRACKS and SPECIAL
OPERATING DEVICES
VALLEN, Inc.
AKRON 4, OHIO
— THE ENEMY —
HEAT
A 10 DEGREE REDUCTION
iN HEAT WILL TRIPLE
TRANSFORMER LIFE.
ARC AND SOUND SYSTEM
POWER SUPPLIES RUN
COOLER. A MODEL TO
REPLACE ANY BULB.
Write
BROWN ELECTRONICS
1717 South St., ALLENTOWN, PA.
which it has applied, including Nor-
elco. Strom; and Diamond carbon.
iP
Brightness Gains for
Philadelphia Theatre
PHILADELPHIA— Evaluations of
a recent installation of the C. S. Ash-
craft Manufacturing Co.'s Core-Lite
Lamps in the Stanley Warner cir-
cuit s Logan Theatre here showed
marked screen brightness gains, said
Henry Eberle. the circuit's chief
sound engineer. Philadelphia zone.
The new lamps were installed by
the Stanle\ \^ arner Service Dept..
and are being sold throughout the
countrv 1>\ National Theatre Supplv
Co.
Eberle said readings indicated an
average increase of 20' « more light
on the theatre's 16.!! ft. by 38 ft.
screen. A gain of 35% in side light-
ing was recorded.
In addition to the increased screen
brightness, Eberle said the lamps cost
less to operate than the ones that
were removed. He said carbon con-
sumption records kept by Logan pro-
jectionist William Singer I 1ATSE Lo-
cal 307). show a 2595 savings on
carbon costs, despite the fact that the
Core Lite uses larger carbons than
the Super Powers, which were re-
moved.
The Core-Lites are being operated
on 80 amperes of current supplied In
motor generator.
Carbon trims used are 11mm x
17'L." positive rotating and ."> 16x0"
negative, and have \ ielded an operat-
ing cost-per-hour figure of 26c. This
compares to a 34c cost-per-hour fig-
ure for the old lamps.
Suggested current range for the
Core-Lite is 75 to 110 amperes.
Eberle said the <>0 ampere operat-
ing level had proven highlv satisfac-
tory for the Logan's requirements.
I he theatre is equipped with Sim-
plex projectors using Kollmorgan
1.5" back-up lenses and Kollmorgan
F 1.9's up front for CinemaScope.
Bausch \ Lomb E 1.8's are used for
standard 35mm presentations. Screen
brightness increases cited apply to
the C-Scope setup.
Eberle said the Core-Lites met all
the claims of Ashcraft and NTS. and
were well suited for a medium-sized
theatre such as the Logan.
Ashcraft attributes the absence of
brown and blue rays with Core-Lite
to the lamps ability to completely
cover the aperture with pure white
light only. Magnification of the car-
bon core makes possible the high per-
centage of white light distribution
and the elimination of brown, yellow,
and red rays of the hard rim or shell
of the carbon. iP
PROJECTIONISTS
PREFER
ETHYLOID
Film Cement For
BEST RESULTS
Available from
Supply dealers
FISHER MFG. CO.
1185 Mr. Read Blvd.
Rochester, N.Y.
%v £>( ; "LETS TWIST"!
Yes, That Easy to Use-No Tools Needed
Just Twist The Stub In & Out . . .
NO GRINDING— NO DIRT
*****
yr if.
IF YOU ARE NOT USING The
"Little Miser" Carbon Saver
YOU are losing several Hundred Dollars
Each Year!
4 Sizes 9-10-1 lm.m. $3.00 Each
13.6m.m. $4.50 Each
ORDER Now— Start Saving Money $$
(We Suggest 3 In Each Projection Room)
LOU WALTERS
Sales & Service Co.
MOTION PICTURE EQUIPMENT
EV 8-1550
4207 Lawnvlcw Ave. Dallas 27, Texas
PROJECTOR
CARBONS
Better
Light!
Lower
Costs!
RINGSDORFF CARBON CORP. East McKeesport, Pa
International Projectionist May 1963
13
CHRISTIE
since 1 a a a ®
Also 200 ofher Models of Power Supplies
and Battery Chargers. Write for Catalog.
CHRISTIE ELECTRIC CORP.
341 6 W. 67th St., Los Angeles 43, Calif.
Norelco
projection
equipment
Available from
leading theatre supply
dealers
North American Philips Co., Inc.
Motion Picture Equipment Division
100 E. 42nd St., New York 17, N.Y.
n»»JMWBI«*JlillBI».M«fTC
BRIGHTER LIGHT
LONGER BURNING
SHARPER PICTURE
NEW CENTURY
70/35 PROJECTOR
A new model 70/35 projector has
been announced by the Century Pro-
jector Corp., New York. A further
development of the Century JJ-Z, it
has been designed, according to
Frank E. Cahill, Jr., vice president in
charge of distribution, to embody all
that is desired by American stand-
ards as well as by experienced Ameri-
can projectionists and service engi-
neers. Features of the new projector
cited in the announcement are unique
designs of the film traps and film
gates (70mm and 35mm), and the
direct coupling of the mechanism and
the optical sound reproducer in con-
junction with a poly "V" motor
drive belt to the projector main drive
shaft.
Accompanying photographs show
the new mechanism as well as the new
70mm film trap, the new curved film
gate and the 70mm sprocket pad as-
Century JJ-2 mechanism with new
70mm trap and gate mounted.
sembly. Both the film trap and gate can
be easily and quickly removed from the
projector for inspection, cleaning and
changing to 35mm, without disturb-
ing any other units. The new projec-
tor has been tested in actual theatre
operation by competent projection-
ists.
The film gate has solid hardened,
polished heavy-duty steel runners for
longer life. The Century-designed
watercell and aperture plate are po-
sitioned in the projector to allow the
film to come as close to the aperture
plate as desired for sharp focus all
mmwwwiv*i*rmT*>i*wT¥'
around the edges. It is also possible
to "set" the film gate to provide a
soft edge aperture focus if so desired.
These same designs are also in-
corporated in the 35mm film trap
and film gate for sharper pictures,
less film wear and for fast and easy
The 70mm film trap, gate and (bot-
tom) intermittent pad assembly.
removal from the projector when
changing to 70mm films. With these
new film traps and film gates, it is
possible to run both 70mm and
35mm films with extremely light ten-
sions ( feather touch ) ; even with
buckled films, tensions are held to a
minimum, it is pointed out. Film ten-
sions can be readily adjusted and set
to desired positions for optimum
screen results.
In addition, a method has been en-
gineered into these projectors for
changing from the standard 24
frames per second to 30-frame speed
without extra motor or change of
parts. Transfer is made by slipping
the new multiple "V" belt over to
the proper pulley, which is already
mounted in place.
Provisions also have been included
to adapt 3-D synchronous projection
and synchronized separate sound re-
producers if needed. Conversion kits
are available.
The new design retains such Cen-
tury features as double rear shutters,
watercells, dual purpose sprockets
(70mm-35mm) and pad roller arms,
separate 70mm and 35mm Ampex
magnetic clusters, simplified thread-
ing, unit construction of vertical and
shutter shaft assemblies; absence of
oil baths except for the intermit-
tent movement, and separate 7/16
and 5/16 magazine spindles for all
reels. iP
OVtCUHC
&Vt6o*t&
Free Test Samples
CARBONS INC., BOONTON, N. J.
STEADIER LIGHT
LESS ATTENTION
PERFECT COLOR BALANCE
Free Carbon Chart
14
International Projectionist May 1963
» AUTHORITATIVE
» COMPREHENSIVE
» PRACTICAL
Acclaimed by leading technicians in
the industry as the most comprehen-
sive and down-to-earth handbook pub-
lished to date on the subject of motion
picture projection. Ideally suited for
study and reference by your opera-
tors.
ROBERT A. MITCHELL'S
MANUAL OF PRACTICAL PROJECTION
HANDY 5'/2" X 8!'2" SIZE
450 PAGES
ILLU STRATED
CROSS INDEXED FOR EASY REFERENCE
* Here is one of the most help-
ful works ever published for
the motion picture projection-
ist. A handsomely bound and
profusely illustrated compila-
tion of the BEST of the Robert
A. Mitchell articles that have
appeared in "International
Projectionis t," revised,
brought up to date.
* The author covers clearly
and thoroughly every aspect of
motion picture projection, pre-
senting his material in easily
understood language — not too
technical, yet technically ac-
curate. The Manual is divided
in 8 sections and contains 30
chapters — a valuable refer-
ence work no progressive pro-
jectionist should be without.
J
SECTION HEADINGS
(1) Film; (2) The Projector; (3) Projection-Optics, Screens; (4) The Arc Lamp;
(5) General Projection Practice; (6) Motors, Generators, and Rectifiers; (7)
Sound Reproduction Systems; (8) Projection of Color and 3-D Films, Formulas.
ORDER YOUR COPY TODAY * USE THIS HANDY FORM
INTERNATIONAL PROJECTIONIST
Post Office Box 6174
Minneapolis 24, Minnesota
Gentlemen: please send me copy (copies of ROBERT A. MITCHELL'S MANUAL OF
PRACTICAL PROJECTION. Enclosed is my check (or money-order) for $
NAME
ADDRESS
CITY ZONE
STATE
$6.oo
per copy
including postage
WHY PAY 25%
MORE FOR
PROJECTION
LAMPS AND
RECTIFIERS?
SAVE BIG MONEY
PROOF:
(See any published list prices of all makes)
on
LOW CURRENT • HIGH INTENSITY
PROJECTION LAMPS
AND BI-POWR RECTIFIER
See Your Independent Theatre
Supply Dealer Today of send for
details on this complete booth
equipment.
BY FAR THE LOWEST IN COST
and having: every desirable
feature, is
WORTH MANY TIMES THE PRICE
YOU GET MORE LIGHT
AND RADICALLY CUT
OPERATING COSTS
Here's why:
-k Burns a 20-inch (not just a 17'/2") black 11 mm. positive carbon
at 85 amperes, consuming only 7 inches per hour, insuring VA
hours' operation at only 15.7c per hour. Projects about
10% MORE SNOW WHITE LIGHT
than lamps burning 0 mm. copper coated carbons at 70 amperes,
which costs 23c per hour.
* OBTAINS SCREEN UNIFORMITIES OF UP TO 100%
* FULL 18-INCH DIAMETER REFLECTOR.
An Optical System Acknowledged To Have No Peer In Efficiency.
ic Both positive and negative drive motors are Bodine geared
head— the finest. Each motor has a separate feed control.
ELECTRIC CORPORATION
31 City Park Avenue • Toledo 1, Ohio
The World's Largest Manufacturer
of Carbon Arc Lamps
ALWAYS FIRST
with new and efficient developments.
INTERNATIONAL
Testing in the XeTRON Division of Carbons, Inc,: Story on Page 4
ary of Congress
Order livision (o368X)
Washington 25, D.C»
JUNE
VOLUME 38
40c A COPY
1963
NUMBER 6
$3.00 A YEAR
WHY PAY 25%
MORE FOR
PROJECTION
LAMPS AND
RECTIFIERS?
SAVE BIG MONEY
PROOF:
(See any published list prices of all makes)
on
LOW CURRENT • HIGH INTENSITY
PROJECTION LAMPS
AND BI-POWR RECTIFIER
BY FAR THE LOWEST IN COST
and having every desirable
feature, is
WORTH MANY TIMES THE PRICE
YOU GET MORE LIGHT
AND RADICALLY CUT
OPERATING COSTS
Here's why:
-k Burns a 20-inch (not just a 17'/2") black 11 mm. positive carbon
at 85 amperes, consuming only 7 inches per hour, insuring 2V2
hours' operation at only 15.7c per hour. Projects about
, . . 10% MORE SNOW WHITE LIGHT
than lamps burning 8 mm. copper coated carbons at 70 amperes,
which costs 23c per hour.
* OBTAINS SCREEN UNIFORMITIES OF UP TO 100%
* FULL 18-INCH DIAMETER REFLECTOR.
An Optical System Acknowledged To Have No Peer In Efficiency.
* Both positive and negative drive motors are Bodine geared
head— the finest. Each motor has a separate feed control.
ELECTRIC CORPORATION
31 City Pork Avenue • Toledo 1, Ohio
The World's Largest Manufacturer
of Carbon Arc Lamps
ALWAYS FIRST
with new and efficient developments.
i i
INTERNATIONAL
PROJECTIONIST
Including a special Audio-Visual section relat-
ing to the operation and maintenance of A-V
equipment in the educational and industrial
fields.
Volume 38
June, 1963
No. 6
FRANK W. COOLEY, JR.
Editor and Publisher
RAY GALLO
Executive Publisher
AL BLOOM
Managing Editor
TOM KENNEDY
Equipment Editor
RAY GALLO ASSOCIATES
National Advertising Representatives
545 Fifth Avenue, New York 17, N. Y.
Telephone Murrayhill 7-7746
(Area Code 212)
IN THIS ISSUE
XeTRON Lamp System 4
Xenon Projection Lamps 6
By ROBERT A. MITCHELL
New South Carolina Theatre 12
London's Empire Theatre 1'
News Notes — Technical Hints — Miscellaneous Notes
MONTHLY CHAT
CLEAN EQUIPMENT MINIMIZES
TROUBLE
The clean equipment minimizes extra work, as the
projection craftsman well knows!
Electrical devices, unlike wine, do not improve with
age. One of the essentials of electrical circuits is to
maintain the flow of electrical energy in the circuits, and
if permitted to stray by dust or dirt, only trouble will
result.
Only a routine cleaning of the electrical contacts can
avoid extraneous interferences in the sound system. A
surge of noise at the inopportune time will ruin the finest
picture, and the same holds good for faulty projection.
If the craftsman has years of experience, he knows
that dirt or dust allowed to collect on his equipment
means trouble ahead, and wasted time at an inconvenient
time. The \eteran craftsman is not a philanthropist. He
can be selfish, knowing that such painstaking methods for
cleaning his equipment means he doesn't have to work so
hard at sen icing dirt] machines.
Atmosphere and Oxidation
\tmopsherc attacks the terminals, causes oxidation,
and oxidized terminals mean poor contacts. Unboxed
tubes kept on the shelves for months should be cleaned,
else when the tubes are placed into the socket the contact
is poor between the tube and socket prongs.
The veteran projectionist has a routine check-up of
all of his equipment, including a check of sound ampli-
fiers, sound heads, corrosion on all switches, all tubes
(the} do not leave any doubtful lube in service), lenses,
lamp reflectors, condensers and fuses, and many other
parts of his machines. Hell tightl) close the oil cans so
atmospheric moisture cant condense in the lubricant
i main cases of rusting equipment are traced to that
condensed in open oil cans).
And he can't take chances on fire, from time to time
he'll inspect the film cabinet to make sure it is still in A-l
condition, and he will periodically inspect the rectifiers,
generators or other apparatus located outside the booth.
INTERNATIONAL PROJECTIONIST, published monthly by the
International Projectionist Publishing Co. division of The
Northern Publishing Co., Post Office Box 6174, Minneapolis
24, Minnesota. Editorial offices, 1645 Hennepin Avenue,
Minneapolis 3, Minn. Subscription Representatives: AUS-
TRALIA— -McGills, 183 Elizabeth St., Melbourne; NEW
ZEALAND — Wixon's, Ltd., 64 Courtnay Place, Wellington;
ENGLAND and ELSEWHERE — Wm. Dawson & Sons, Ltd.,
Macklin St., London, W. C. 2. Subscription Rates: United Stores,
Canada, and U.S. Possessions, $3.00 per year (12 issues) and
$5.00 for two years (24 issues). Foreign countries: $4.00
per year and $7.00 for two years. Changes of address should
be submitted four weeks in advance of publication date to
insure receipt of current issue. Second-class postage paid at
Minneapolis, Minn. INTERNATIONAL PROJECTIONIST as-
sumes no responsibility for personal opinions appearing in
signed articles, or for unsolicited articles. Entire contents
copyrighted 1963 by INTERNATIONAL PROJECTIONIST
PUBLISHING CO.
1
International Projectionist June 1963
Dust Deteriorates
The usual thing is a painted floor in the projection
room, and when the paint is worn to the point that walk-
ing on the floor will scuff concrete dust into the equip-
ment, the projectionist has an insurmountable task. The
effect of dust upon electrical apparatus is of greater
importance at the seashore, where the atmosphere is very
moist.
The new and older large installations, carry all wires
though conduit, but in many cases with open wiring the
wires develop puncture due to moisture absorption.
The projectionist cannot coordinate electrical distur-
bance with dirty equipment. The projectionist should take
a firm stand with the exhibitor or the manager if dust gets
in the booth. He is powerless to keep the equipment clean.
And why should the exhibitor permit dust and dirt on his
own equipment — assuming his projectionist cleans the
equipment regularly? iP
XeTRON
Frank H. Riffle, general
manager of the XeTRON
Division of Carbons, Inc.,
points out the simplicity
of the pushbutton starting
device of the XeTRON
CX unit, designed main-
theatres'' 35mm, 16mm
and 8mm operations. The
unit has a 40 watt lamp-
house.
Carbons, Inc. announces the
launching of its XeTRON Division as
its entry into the Xenon light field.
This will be in addition to the Lor-
raine Arc Carbon Division which
supplies the "Orlux" arc carbons to
the motion picture industry; "Ac-
tina" carbons to the graphic arts in-
dustry, and "Solar" carbons to the
environmental sciences industry.
The XeTRON Division will be built
around the sale of Xenon short arc
bulbs, highly efficient XeTRON
lamphouses, XeTRON silicon power
supplies and associated items.
Heading up the XeTRON Division
as technical director and general
manager will be Frank H. Riffle, a
veteran of 35 years in theatre projec-
tion and sound work. Mr. Riffle is
Lorraine Carbon Enters
Xenon Lamp Field
a professional registered engineer
whose experience includes 20 years
with ERPI and Altec Service, eight
years as chief engineer with Motio-
graph, Inc. and three years as field
engineer with Carbons, Inc. He is an
active member in the Society of Mo-
rion Picture and Television Engineers,
as well as IATSE Local 163.
Edward Lachman, president of
Carbons, Inc. said recently: "The
growing interest in Xenon as a new
source for motion picture projection
and other applications cannot be ig-
nored. During the past years we have
watched carefully the development of
the enclosed-short arc and have seen
it improved through the use of pat-
ented features to a point where it
is a very reliable high quality light
source suitable for color as well as
black and white projection, in the
range of 1 to 2 kilowatts. For the
present time, needless to say, for the
large theatre or drive-in, the carbon
arc remains still unmatched and can-
not be replaced.
"Our laboratories in France and
Italy have cooperated to develop
these advances in this Xenon field.
The lamphouses and the enclosed
short arcs have been proven and are
now used the world over. Originally
there may have been some deficien-
cies in the spectral output but by
careful lamp and optic design this |
was corrected and/or changed to
match the color quality of the high
intensity carbon arc lamp.
"We feel that the XeTRON lamp-
house can meet the very exacting
requirements for screen brightness
and color demanded by the studios of
Hollywood and a great number of
theatres in America.
"Therefore, Carbons, Inc. through
its new XeTRON Division, proudly
An inside view of the new unit
ON THE COVER:
Gathered in front of the neiv Lamp are chief projectionist
Charles Bachert of the State Theatre, Boonton, N.J.,
a member of IATSE Local 502, Frank Riffle, Lorraine
Carbon engineer and general manager of the XeTROI\
Division, and Edward Lachman, president of Carbons.
Inc., Boonton, N.J. Several of the other illustrations
were taken in the experimental and test laboratories
of the division in the State Theatre.
International Projectionist June 1963
Frank Riffle Heads New Division;
Will Distribute Cinemeccanica Lamp
announces that it is the distributor
for the XeTRON lamphouses, manu-
factured by Cinemeccanica of Milan.
Italy.
"These lamphouses will he avail-
able in two basic sizes. The XeTRON
CX unit will use a 150 watt Xenon
bulh and is destined for the 16mm
and 8mm projection. The larger
The lamphouse closed
XeTRON lamphouses are designed
for 900, 1600 or 2500 watt Xenon
bulbs, and can be used with screen
sizes up to 40 feet wide. Specially
designed, patented front surface
"cold" reflectors are standard equip-
ment. The coating is "super hard"
and withstands repeated cleaning
without losing its characteristics.
"XeTRON is also happy to an-
nounce that they have been selected
by the Christie Electric Co. of Los
Angeles, as the exclusive distributor
for their power supplies for those
fields in which the XeTRON Divi-
sion is primarilv concerned."
The XeTRONPOWER units use
Silicon rectifiers. They have the prop-
er volt-ampere characteristics, cur-
rent ripple and the Vc RMS or less,
current regulation as specified for
proper Xenon operation. These fea-
tures provide XeTRON equipment
users with maximum protection as far
as trouble-free, low cost operation is
concerned.
Mr. Lachman said the same type
of customer service by field techni-
I.VTERNATIONAL PROJECTIONIST
cians ?upplied by Lorraine Carbons,
will be available from the XeTRON
l)i\ ision.
For those not familial with the
\enon short arc and it> character-
istics, the following information ma\
be helpful.
The Xenon bulb consists of a
quartz envelope containing two
tungsten electrodes in an atmosphere
ol Xenon gas.
Some of the important character-
istics are outlined:
I. Average color temperature is 6,-
000 degrees Kelvin, which is con-
sidered best for motion picture pro-
jection. 2. Color remains unchanged
even when input power is varied o\cr
a wide range. ^. Maximum arc sta-
bility I. Constant light output over-
rated average life when hull) is oper-
ated according to specifications.
The bulbs must he operated from
direel current with the proper polar-
ity. The power supplies an- designed
especially for the Xenon operation
and must meet several requirement.
sucb as:
(a) Proper no load voltage, (b)
Satisfactory voltage regulation to re-
duce arc voltage to proper operating
level after arc i- established, id how
current ripple to prevent damage to
Xenon bulb and give a flicker-free
picture, id I Provide a fine type of
current control in order to adjust the
bulb current to the needed value.
The current design of the power
supply is of utmost importance to a
successful Xenon operation, such as
Christie's, otherwise it can reduce
bull) life considerably and create
several hazards to a normal opera-
tion. Due to electrode spacing and
pressure of Xenon gas inside the
bulb, a certain procedure should be
followed to start the arc. When the
start button is depressed a high
voltage of high frequency of 40.000
volts is developed and applied across
the bulb electrodes for a fraction of
a second. This ionizes the gas in the
bulb and reduces the resistance of
the gap. If the power supply, no load
voltage, is sufficient, current will
flow between the electrodes and
establish an arc. Due to the regula-
tion characteristics of the power sup-
ply, the arc voltage will immediately
June 1963
Operating details of the
Cinemeccanica lamp are
shown here, with the
lamp in place in front of
the reflector, and the
entire lamphouse.
drop to the proper operating level.
While the ignition voltage is very
high, it is of such a nature that it
is not considered hazardous when
normal precautions are employed. It
is similar to the spark from an auto-
mobile ignition system or the fly-
back voltage in a television receiver.
In normal operation, full protection
is provided to avoid unpleasant re-
action.
For the first time a real "push
button" operation is available for a
high intensity type light. About two
seconds after the arc is established
it settles down to a high degree of
stability and needs no further atten-
tion.
It appears that the "Xenon Age"
is approaching and we feel sure that
many people will be amazed with the
results being obtained and with the
potential that exists in this field. iP
XENON
Projection
Lamps
PART I
CHARACTERISTICS AND BASIC PRINCIPLES
By ROBERT A. MITCHELL
Professionally alert, the projection craft is always
intrigued by new technical developments which show real
promise of improving the presentation of motion pictures.
Exhibitors, by and large, do not evince an interest until
the innovations have been adequately tested by actual use
for a long period of time. The xenon "short-arc" pro-
jection lamp is just such a development. Although new,
it has already proved its worth by years of gratifyingly
satisfactory use in theatres. Its use is rapidly expanding.
Introduced in Germany nearly 10 years ago, the
xenon lamp quickly won acceptance as an adequate, and
in some respects superior, substitute for the smaller
carbon-arc lamps burning relatively low currents. When
substituted for the low-intensity carbon arcs which were
still used in many European theatres a few years ago,
the superiority of xenon lighting was impressively ap-
parent. The push-button ease of operation, the constant
color temperature of its daylight-white light, and the
absence of moving parts together with is cleanliness and
The name "xenon" comes
word xenos, meaning "stranger.'
from the Greek
This refers to
the rarity of xenon gas in nature, for the xenon
short arc is no longer a stranger in the projection
room. Clean and easy to operate, this novel source
of dependable daylight- white projection light has
proved its worth by actual use over a period of
years, and is now the preferred illuminant in
studio and laboratory preview rooms and in many
of the smaller theatres.
This, the first of two articles on xenon, explains
the basic spectrophotometric principles of gaseous-
discharge light sources. Though xenon cannot com-
pete in light output with high-intensity carbon arcs
burning more than 55 amperes ( 12,500 screen
lumens without shutter under standard conditions),
it represents a distinct improvement over the small-
er "simplified" HI arc lamp, which it may one day
replace.
operating economy also commended the xenon lamp as
a more-than-adequate substitute for the smallest "simpli-
fied" high-intensity mirror lamps burning 7-mm positive
carbons.
Carbon Arcs for Large Screens
Even though the advantages of the xenon lamp over
the very smallest carbon arcs are obvious, it must be
borne in mind that there is not now, and probably never
will be, any substitute for the high-intensity carbon
arc for the larger screens. It is possible that the intrinsic
brightness of the xenon light source will be somewhat
increased in the future, but there appears to be a
definite limit as to the feasible maximum luminosity of
a light source which already has the maximum radiating
area permissible for optical projection — a fan-shaped
"flame" of ionized gas enclosed in a quartz-glass bulb.
In the present state of the art, therefore, the xenon
lamp offers its marvelous advantages only to those
theatres where the screen is small enough to be adequately
illuminated with Suprex carbon arcs burning no more
than 55 amperes. Theatres requiring from 60 to 80
amps, in Suprex lamps, or 75 or more amps, in rotating-
positive lamps, must retain the high-intensity carbon
arc.
The excellence of the xenon lamp in its rather more
modest range of luminous outputs nevertheless merits
the greatest attention. The projectionist, in particular,
should familiarize himself with the picture-illuminating
and operating characteristics of this new light source.
If his theatre has a matte screen of 0.85 reflectance no
wider than 27 feet, or a pearl or low-gain aluminum
screen of 1.5 reflectance no wider than 35 feet, the
possibility that he may one day be operating on xenon
equipment most assuredly exists! Xenon lamps are easier
to operate than carbon arcs.
Xenon a True Arc
All of the different illuminants heretofore used for
the projection of motion pictures in theatres derive their
light from brilliantly incandescent solids. In the old-
fashioned limelight, a solid "pin" of quicklime is heated
International Projectionist June 1963
A Scene From America's Projector Carbon Center...
Equipment for coaling carbons with copper
if
Coating projector carbons with the right amount
of copper is a top-billing production step"
Sid Morley
This equipment performs the
important task of coating pro-
jector carbons with copper— not
for eye appeal, but for the vital
purpose of assuring more de-
pendable screen lighting. The
coating helps conduct current from the jaws of
the lamp to the arc. For maximum light effi-
ciency the copper coating must be of precision
thickness — no more — no less!
From the coating operation at National Car-
bon's plant in Fostoria, Ohio, projector carbons
move on to an automatic resistance test, where
a direct reading instrument measures in ohms-
-says SID MORLEY
National Carbon Salt's Engineer
per-inch the coating on each carbon. If the coat-
ing is too thin or too thick, the unwanted carbon
is ejected from the line.
How is this rigid test related to good lighting?
First, if the coating is too thin, the carbon might
spindle back to the holder, resulting in freezing
and a possible lamp shutdown. Secondly, if too
thick, it might produce copper dripping and
cause the arc to wander.
In coating and all other manufacturing steps,
National Carbon utilizes today's most reliable
quality control methods. We want to be sure
your patrons get the finest screen lighting that
projector carbon money can buy !
Conlact
Mr. National Carbon
UNION
CARBIDE
"National" and "Union Carbide" are registered trade-marks for products of
NATIONAL CARBON COMPANY
Division of Union Carbide Corporation • 270 Park Avenue • New York 17, N. Y.
In Canada: Union Carbide Canada Limited, Toronto
*
International Projectionist June 1963
FIG. 1 — Two sizes of xenon
bulb manufactured by the
firm of Osram in Germany.
The bulbs are made of heat-
resistant quartz, the metal
electrodes of tungsten. The
bulbs are filled with pure
xenon gas at a pressure of
from 8 to 10 atmospheres.
to incandescence by an oxyacetylene flame which, by
itself, is only feebly luminous in spite of its high tempera-
ture. The "mazda" light bulb used in small projectors
emits its radiation from a solid tungsten-wire filament
heated to incandescence by an electric current.
The low-intensity carbon arc produces its light from
the white-hot tip of a solid carbon rod heated, like an
incandescent-bulb filament, by the passage of electricity.
The solid carbon does indeed slowly vaporize and burn
away, but the "arc" of current-conducting gas between
the tips of the two carbons, although luminous, is much
less bright than the glowing positive crater. Even the
high-intensity arc is a solid emitter. Some of its light
comes from the solid carbon of the crater, but most comes
from a cloud of electrically excited cerium oxide particles
suspended in a film of carbon gas covering the crater
floor. Inasmuch as the low-intensity crater light is
yellowish, and the high-intensity cerium light is bluish,
varying the electrical load varies the color of the high-
intensity carbon arc.
The xenon light source, on the other hand, is a true
gaseous-discharge type of illuminant, and "arc light" in
the true sense of the term. All of the radiation is emitted
from an arc of glowing gas between the two metal
electrodes, not from the electrodes, themselves.
Bluish
violet
400 436
Yellow- „
£reenYellow
546 578V
700
SPECTRUM OF MERCURY
400 436 546 578
700
SPECTRUM OF MERCURY
(VAPOR UNDER PRESSURE)
FIG 2 — The spectrum of mercury vapor con-
sists of bright colored lines on a dark back-
ground. The three most intense lines are
bluish violet, yellowish green, and yellow. If
the pressure of the vapor is greatly in-
creased, the lines broaden to give a more
satisfactory light for illuminating purposes.
Nevertheless, the absence of red rays in
mercury light causes all red objects illumin-
ated by it to appear dark brown or black in
color. This diagram is for illustrative purposes
only: there is no mercury in a xenon bulb.
Common Discharge Lamps Colored
Most of the common gaseous-discharge illuminants,
such as the neon-type tubes used for illuminated signs, are
manifestly unsuitable for projection purposes. First, they
aire not sufficiently concentrated (low luminosity per
unit area ) . and hence cannot be focused to a small,
intensely bright "spot" by mirrors or lenses. Second,
they emit a strange sort of light which usually appears
more or less colored and which, when analyzed with a
spectroscope, is seen to consist only of a few intensely col-
ored "emission lines" (Separate wavelengths of light) on
an otherwise dark spectral background.
The mercury-vapor lamp used for blueprinting is
another common example of an electric gaseous-discharge
light source. Electricity passes through mercury vapor
and excites the mercury atoms into emitting radiation.
The light of a mercury-vapor lamp has a ghastly green-
ish white color, but this is not its worst feature as an
illuminant. It makes most colored objects illuminated by
it, look horribly discolored and blackish.
The discoloring effect of mercury-vapor light is due
to the absence in its spectrum of all but a very few colors.
The mercury spectrum consists chiefly of only three
bright colored lines on a black background — yellow,
yellowish green, and bluish violet. (The strong ultraviolet
lines, useful in a few special applications, are invisible. I
In mercury light, all objects which are bright blue, bluish
green, orange, or flesh-colored appear grav or brown;
and all red objects look black for the simple reason that
mercury light is almost completely devoid of red rays!
An improvement in both the illuminating intensity
and visual quality of mercurv light results when the
pressure of the electricity-conducting vapor, or gas, is
greatly increased. Not only does the mercury-vapor
tube then give more light, but the spectral emission lines
(yellow, green, and violet) widen into relatively broad
bands which include more colors. The light then has a
less ghostly appearance and gives a somewhat better
(though still very far from perfect) rendition of colored
objects illuminated by it.
This is why the mercurv vapor in modern street-
illuminating lamps and in the "pulsed-light" tube for
shutterless motion-picture projectors is excited under high
pressure. But even so, the extreme weakness of the red
region of the mercury spectrum and the absence of pure
blue are serious handicaps from the visual point of view.
The light from a high-pressure mercury bulb may have a
daylight-white appearance, but it is spectrally too selec-
tive to behave in a natural manner as an illuminant. This
is true even when cadmium has been added to the mer-
curv to supply the missing red wavelengths, or rubidium
and cesium to supply both red and blue.
The mercury arc and its spectrum have been described
here only to clarify the basic spectro-colorimetric prob-
International Projectionist June 1963
lems peculiar ti> gaseous-discharge light sources. That the
tenon arc is free from the energy-distribution limita-
tion- of the mercury are will soon he apparent. Vo
mercury is used in the xenon lamp.
Xenon Satisfactory for Projection
Xenon is an invisible, heavy, odorless, non-poisonous,
Don-combustible, and verj rare gas of the helium family
of chemically inert elements (helium, neon, argon.
krypton, xenon, radon); and it. too, emits light when
excited In the passage of electricity. And as is the case
with mercury vapor, the emission lines of xenon are
broadened and improved for illuminating purposes by
pressurizing the gas.
However, there are very important differences
between xenon light and mercury light — differences which
serve to impress us with the very satisfactory visual
qualiu of the light emitted In pressurized xenon gas when
an electric current of the proper voltage characteristics
is passed through it.
Unlike mercurj light, which has onl\ three brighl
•■mission lines, xenon lignl has a large number of lines
evenhj distributed throughout the entire \ i-il >!«• spectrum.
\nd when the xenon gas is placed under pie— me. the
lines broaden and merge into one another to form a
continuous spectrum containing all of the color- associ
ated with the different wavelengths of lighl from TOO
millimicrons (deep red) to 400 millimicrons (intense
violet). None are missing. The result is a daylight-
white light of continuous energy distribution which is
visually pleasing and ui\e- a complete!) natural rendi-
tion of the colors recorded on dye-image color films,
Violet
Blue Cya
n Green
YdlowOrui^*
Red
,^
&*
'I
_i -*»■
. ^ — — ■
~^z£
;"'-%
_>UN
.
2^
"*«"**
;r0\
3
f L.I. ArtC s&P
/"V
400
300 600 700
Nanometer*
FIG. 3 - - Spectrophotometric curves in the
visible spectrum of average noon sunlight, the
high-intensity and Ion-intensity carbon arcs,
ami the tungsten-filament (mazda) lamp. The
weakness of mazda illumination in the short-
it arc end of the spectrum ! violet to blue)
results in a distinctly yellonisli li^ht.
such
color
as
Eastman Color,
erraniacolor. etc.
Technicolor. Gevacolor, \ufa-
Quality of "White": Color Temperature
The ideal color-quality of illumination for motion
ja&aa& PROVED BYTEST...BYFARTHE BEST
Arc Lamps and Rectifiers for Every Projector... for Every Theatre... The World's Finest
HERE ARE THE FACTS
SUPER ClrMEX . . . The masterpiece
of the most experienced projection lamp
designer. No other lamp has even re-
motely approached its perfection from
every point of view— mechanically, elec-
trically, optically, hydraulically or its fine
air-conditioned system. Its durability and
stamina have been proved. More and more
fine theatres and drive-ins are re-equip-
ping with Ashcraft Super Cinex daily due
to their fine reputation for perfect screen
light and service. Current range with 1 3.6
mm carbon, 125-165 amperes.
CORE-LITE ... the latest and most
phenomenal producer of white light at
lowest possible operating cost in the fam-
ily of Great Ashcraft Arc tamps. Same arc
burner and arc controls as the SUPER-
CINEX. Same quality and built-in reliabil-
ity. The lamp is optically designed to give
greater white light distribution at less cost
for carbons and electricity. There is none
better— anywhere! 70-110 amp.
CINEX 35/70 SPECIAL ... The
Great of the Ashcraft Arc tamps is a modi-
fied Super Cinex. Like the Super Cinex no
third element or relay lens is necessary
regardless whether 35 mm or 70 mm film
is being projected. Uses a 13.6 mm
high intensity positive carbon at
current ranges between 1 25 and
1 40 amperes.
RECTIFIER . . . THE SPECIAL CORE-
LITE I 2 PHASE HIGH REACTANCE
RECTIFIER . . . designed for the require-
ments of the Core-Lite lamp, this rectifier will
give the best results. Low reactance 6 phase
rectifiers should not be used. Certain motor gen-
erators, but not all, are acceptable. The special
Core-Lite S/1212 rectifier will give you long,
excellent service with an absolute minimum of
expense. Other Ashcraft rectifiers available for
every power need. The cost is no more than for
inferior rectifiers.
m^kmWkmWkmlkm^km^kmWkmWkmmm^m
SOLD EVERYWHERE IN THE UNITED STATES BY LEADING RECOGNIZED THEATRE SUPPLY DEALERS
I.S. ASHCRAFT MFG. CO., INC. • 36-32 38th STREET- LONG ISLAND CITY 1, N.Y.
International Projectionist June 1963 9
picture projection is ordinarily described as "daylight
white." An illuminant will give this quality of light when
it emits all visible wavelengths about equally. If the light
is weak in the shortwave end of the spectrum (violet,
blueviolet, blue), it will be yellowish in color. If weak
in the longwave end (red scarlet, orange), the light will
be bluish. If weak at both ends, the middle green and
yellow rays will preponderate, and the light will look
greenish. Less frequently, the middle part of the spec-
trum may be weak. In this case, the preponderance of
red and violet rays will impart a purplish or pinkish
color to the light.
For the purpose of measuring light, particularly with
reference to its color, scientists have agreed upon three
standard illuminants designated as Source A, Source B,
and Source C. Source A is amber-yellow tungsten-lamp
illumination. Source B is direct noon sunlight. Source
C. the one we are most interested in, is diffused daylight
(direct sunlight plus blue skylight). Compared with
lanmplight. Source C illumination has a bluish cast, but
it is actually the near-neutral whiteness of skylight on a
heavily overcast day.
Unless they are perceptibly purplish, pinkish, or
greenish, illuminants may also be rated on the basis of
the temperature to which a perfectly absorbing "Planc-
kian-type radiator" must be heated to match them in
color. Thus the light of a candle flame may be said
to have a "color temperature" of 3,015° Fahrenheit, or
1,657° Centigrade; and because the glowing carbon par-
ticles in a candle flame actually have this high tempera-
ture, carbon may be said to be a near-perfect Planckian
radiator.
In practice, color temperatures are specified on the
absolute, or Kelvin, thermometer scale, which is the same
as the Centigrade plus 273 degrees. In the example
above, 3,015° F = 1,657° C = 1,930° K. Zero on the
Kelvin scale is particularly significant: it is the tem-
perature at which all heat vanishes — the absolute and
unsurpassable cold. (0° K = -273° C = -460° F.)
It can readily be understood that reddish and yel-
lowish light sources have lower color temperatures than
pure white and bluish white sources. The standard tung-
sten mazda lamp ( Source A ) , for example, has a color
temperature of 2,854° K, while a 1000- watt mazda pro-
jection lamp has a color temperature of about 3.200° K,
Ultra
violet
-<— VIsib
e —
Infrared
H.I
.AC
\c
f I
\
V.
1 XI
:nc
)N
:■ :
C
1
\'i>
\ *I
_C
1
;
:1:
;
?•
ij-
.-'*
•+*•**—'
>..
,»..
i
X
/,
X
ENC
)N
**.
'•4
d^*3
/
"c
•-"**
^*as
*•—•"
!.!»»
300 -4O0 500 600 70O 800 900 100O 120O 140O 1600
Wavelength in nanometers (millimicrons)
FIG. 4 — Ultraviolet, visible, and infrared
energy distribution for the high-intensity
carbon arc and the xenon short-arc bulb
(dotted line). The energy distribution of
xenon light is continuous and nearly level in
the visible spectrum. Xenon light is therefore
daylight-white in color and very satisfactory
for the correct rendition of the colors in
color-film prints.
10
and hence emits a somewhat whiter light. Nevertheless,
the "white" light of a mazda projection bulb is de-
finitely yellowish in comparison with direct noon sun-
light (Source B = 4,870° ) or diffused daylight (Source
C = 6,740° ) . The color temperature of clear blue sky
is said to be about 25,000°, while an "infinitely hot"
body would emit a light just perceptibly bluer than the
clear blue sky. (Even this is far from a "saturated"
spectrum blue ! )
Co9or Temperatures of Carbon Arcs
The color temperature of the low-intensity carbon
is 3,900°, which is, in fact, the actual temperature of
solid carbon heated to the temperature at which it va-
porizes. (3,900° K = 3,600° C = 6,800° F in round
figures. ) The LI carbon arc is thus whiter than a
tungsten-filament bulb, though slightly yellowish in
comparison with the high-intensity carbon arc or with
daylight.
Except for solid carbons, tungsten-lamp filaments,
and other Planckian radiators, color temperature has no
connection with the actual temperature of light sources.
Thus clear blue sky, which has the enormously high
color temperature of 25,000°, is actually freezing cold!
But a lump of matter heated to a temperature of 25,000°
(as in certain stars) would have exactly the same bluish
color.
Unlike the low-intensity arc. the high-intensity carbon
arc does not obey Planck's rule. It is a non-Planckian
radiator. The actual temperature of the crater of a HI
positive carbon is the same as that of the crater of a
LI positive carbon (3,900°). but the color temperature
of a HI arc is quite a bit higher than that of a LI arc.
This means that the HI carbon arc gives a less yellow-
ish, or "whiter," light than the LI carbon arc does.
The blue-white component of the light of a high-intensity
carbon arc comes mainly from cerium atoms in an elec-
trically excited state.
As a matter of fact, the pure white light of a properly
operated HI carbon arc is similar to direct sunlight
(color temperature about 5,000°) both in appearance
and in spectral energy distribution — no empty "gaps"
or sharp emission "peaks" in the spectrum. This makes
the HI carbon arc very satisfactory for color-film pro-
jection. Unfortunately, however, two important operat-
ing factors familiar to all projectionists militate against
the achievement of an invariably constant color tempera-
ture for HI carbon-arc screen illumination.
Color Temperature of HI Arc Varies
One of these carbon-arc operating factors is electrical
load. If HI carbons are burned at the minimum recom-
mended currents, the color temperature may be as low
as 4,500°. This represents a distinctly yellowish light,
and only just a bit "whiter" than LI arc radiation. On
the other hand, HI carbons burned at the maximum re-
commended currents emit a blue-white light of about
6,500° in color temperature. This is substantially the
same as diffused daylight (Source C) in color.
Readers of IP mav recall that we have always recom-
mended that HI positives be burned at. or very close to,
their maximum current ratings in order to obtain this
snow-white daylight quality of light on the screen. The
picture will also be brighter, the screen illumination more
uniformly distributed, and the reproduction of color
films more vivid and lifelike.
The second carbon-arc factor affecting the color
temperature of the light on the screen is arc focus.
If the positive crater advances too far toward the mirror,
the light will become brownish — a very low color tem-
perature. If the crater recedes too far away from the
(Continued on Page 16)
International Projectionist June 1963
MPAA Officials
Praise Century
Projection Booth
WASHINGTON — Following the
installation of the Century projection
booth for the Motion Picture Associ-
ation ot America's screening room
here, MP A \ officials expressed their
satisfaction with the installation, de-
tailed in the May, 1963, issue of IP.
Kenneth (Mark, executive vice presi-
dent ot MPAA, disclosed his satisfac-
tion with the Century-equipped pro-
lection booth in a letter to Frank E.
Cahill, Jr. ot Century:
"It's the talk of the town . . . the
Century-equipped projection booth in
our screening room.
"Now. with this marvelous new in-
stallation, we can show everything from
lonim to 70mm. The transistorized
sound system is also perfect.
"A top I. S. Government official
who attended a screening here the
other night came out smiling and said:
"'It this is how it is in theatres. I'm
becoming a movie Fan again. It's al
most like attending a live stage show.
only better in many respects. I reali/e
now how much I've been missing from
passing up too many motion pictures.'
"When theatres ha\ e equipment such
■ is you have installed lor us. I am sure
it will lure back customers who have,
as our friend said, been passing up
too many mm its.
"We are delighted with it all."
Ih-' Motion Picture Association of
America. Inc's screening room in
Washington, D.C. is one of the out-
standing screening rooms in the world
— in fact, those who have visited this
exquisite room come awaj with the
feeling that the) have enjoyed Amer-
ica's pa-time f movies) in the atmos-
phere of a beautiful living room.
\- for motion picture presentation
facilities, the MP \ \ projection booth
has everything from 16mm to 70mm
equipment.
The new Century American-made
'» '>imm projectors as well as the
Centurv multiple 6-1-1 channel All-
Transistor sound equipment was sup-
plied and installed by H. C. Dusman
of the firm of J. F. Dusman Co. of
Baltimore. Md., established in 1912.
The Dusman Co. has been a Centurv
dealer for over 35 years. In addition
to the 7<> 35mm equipment, auxiliarv
interlocks for 3D or separate sound
heads were installed, which makes
J. Al Pratt, consulting projection
this room unique in even respect,
engineer, member of Local 224 MPO.
was in direct charge of the installa- .
tion completed March 15. 1963.
International Projectionist June 1963
IF YOU ARE NOT USING THE
"LITTLE MISER" CARRON SAVER
YOU ARE LOSING SEVERAL
HUNDRED DOLLARS EACH YEAR
AN
NEW
ILLUMINATED SCREW DRIVER
Just twist the stud in and out
No grinding — No dirt
4 sizes, 9-10-1 1mm, $3.00 ea.
13.6mm, $4.50 ea.
for working on speaker post after dark . . . com-
plete with 4 driver bits; two sizes flat head and
Phillips head and two No. 135 batteries, $3.35
each.
LOU WALTERS
Sales and Service Co.
4207 Lawnview Ave., Dallas 27, Texas
Phone EV 8-1550
Post paid when check is sent with order.
*'
CRYSTAL
CLARITY
IN PROJECTION
Kollmorgen lenses rate tops in the mo-
tion picture industry. Used exclusively
with Cinerama, they are standard equip-
ment in more than 70% of American
theaters. Crystal clarity of projection
on the screen — the whole screen — is typ-
ical of the outstanding performance of
super snaplite" lenses.
Other advantages that add up to
superior screening with super snaplite
are:
Fastest tens speeds
Crystal clarity
Wire sharp contrast / 1^
Wide range of focal lengths I "
Sealed construction \ | £
Bulletin 222 describes Kollmorgen
lenses in detail. See your equip-
ment dealer, or write us direct.
CORPORATION
NORTHAMPTON. MASSACHUSETTS
11
THE CINEMA THEATRE
LOBBY CONCESSION AREA
Well-Chosen Location, Top-Flight Projection
Equipment Pay Off for South Carolina Theatre
LOBBY LOUNGE AREA
AUDITORIUM AND STAGE
Stewart & Everett Theatres, Char-
lotte, N. C, has a new, modernistic
theatre in Rock Hill, S. C, the Cinema
Theatre.
Charles H. Wheatley & Associates,
architects in Charlotte, designed and
supervised the construction of the
theatre. The architects were given
freedom by Stewart & Everett to give
expression to "something new and
different, yet incorporating in the
design the proved principles condu-
cive to good theatre operation and
good presentation."
The Cinema Theatre has a fine
location on Oakland Avenue, which
is a thoroughfare bringing traffic
into Rock Hill from the more popu-
lous outlying area. It's one block
from Winthrop College, a South
Carolina State girls' college with an
enrollment of 2,100 students. Rock
Hill has a population of 30,000 and
a drawing radius of approximately
60,000.
All equipment, both sound and
BRIGHTER LIGHT
LONGER BURNING
SHARPER PICTURE
Free Test Samples
|^lW*»*f w'rmwi'iwTf
■
Double 84 inch relay racks for stereo
pre-amplijier anil controls. No. 2,
and No. 3 amplifier channels to stage
speakers, and output selector panel.
On the right is the optical stereo
selective monitor and input controls
to the optical power amplifier.
projection and intercommunication
system was installed l>\ Carolina
Sound Kquipment Service. Charlotte,
under the direction of the firm's
engineer, R. W. Ramsey, and John L.
Shaver. Jr.. assistant to Ramsey.
The Cinema Theatre has a seating
capacity of 600. The cost of the
building was $133,500, exclusive of
land. The cost of the equipment was
approximatel) S 10,000.
The exterior was constructed of
glass, ceramic tile, brick and con-
crete, with the main sign and marquee
huilt in Plexiglas with Wagner glass
H
THE VERY FINEST
PROJECTOR PARTS
The ultimate in precision, long life and dependability—
they keep projectors in top operating condition essential
to good pictures, patron satisfaction and good business.
Available through your Theatre Equipment Dealer.
SINCE 1908
MACHINE WORKS
463S W. LAKE ST., CHICAGO 44, ILL.
TELEPHONE— AREA 312— ES 8-1636
How electrical noise is produced • • .
calculated . . . measured . . . controlled
Here are the basic facts about electrical noise — how it originates
in circuits . . . what terms describe it . . . how to measure it . . .
how to design circuits to minimize its undesirable effects. The
physical nature of tbe various sources of noise are clearly de-
scribed, including such sources as thermal agitation or resistance
noise . . . shot noise in vacuum tubes and semiconductor junctions
. . . noise from spontaneous emission of electromagnetic radiation
. . . and noise in gas discharges. This practical book also explains
auxiliary mathematical techniques, and discusses the relation of
signal and noise in various types of communication systems. For
ease in use, the simple tuned circuit associated with a device for
measuring average power is made the basic tool for analyzing
noise.
ELECTRICAL
270 pages, 6x9
105 illustrations
$10.00
By WILLIAM R. BENNETT
Data Communications Consultant, Bell Telephone Laboratories, Inc.
Rear of right projector assembly
wiring and booth intercommunica-
tion and house lighting control. (No
horizontal conduit runs.)
International Projectionist June 1963
Each chapter in this helpful book begins in
a simple, practical manner and works toward
more complicated examples. For example, prop-
erties of thermal noise and its relation to black-
body radiation are deduced from basic laws
of thermodynamics and statistical mechanics.
You also will find a clear treatment of elemen-
tary quantum mechanics in discussions of the
maser and of noise in semiconductors. And, in
describing noise properties of various devices,
the book fills in your working background with
basic facts on junction diodes — transistors —
gas discharge tubes— klystrons— traveling wave
amplifiers— and others. Both independent and
dependent noise sources are analyzed.
In addition to the standard theory of noise
figure and its significance, a treatment is given
of the more comprehensive Haus-Adler theory
of noise measure. Throughout, the book stresses
the universality of noise-like phenomena. Noise
formulas for diodes and transistors; noise gen-
eration to meet specifications; design of ampli-
fiers for minimum noise effects— these and many
other topics "are covered. A comprehensive re-
view of noise in the various methods of signal
transmission such as amplitude modulation . . .
frequency modulation . . . and the different
kinds of pulse modulation is included,
CONTENTS
1. General Properties of Noise
2. Thermal Noise
3. Distribution of Magnitudes in Noise Sources
4. Noise in Vacuum Tubes
5. Noise in Semiconductors
6. Noise in Electromagnetic Radiation
7. Noise-generating Equipment
8. Noise Measurements and Techniques
9. Design of Low-noise Equipment
10. Application of Fourier Analysis to Noise
Problems
11. Noise in Communication Systems
INTERNATIONAL PROJECTIONIST
Post Office Box 6174
Minneapolis 24, Minnesota
Please send me a copy of "Electrical Noise"
by William R. Bennett. (I enclose $10.00.)
Name
Address
City & State
13
MODERNIZE
POWER UNITS
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BROWN ELECTRONICS
1717 South St., ALLENTOWN, PA.
PROJECTIONISTS
PREFER
ETHYLOID
Film Cement- For
BEST RESULTS
Available from
Supply dealers
FISHER MFG. CO.
1185 Mr. Read Blvd.
Rochester, N.Y.
Norelco
projection
equipment
Available from
leading theatre supply
dealers
North American Philips Co., Inc.
Motion Picture Equipment Division
100 E. 42nd St., New York 17, N.Y.
Edward L. Taylor of Rock Hill,
S. C. is the projectionist, with 10
years operating experience since the
service. He was formerly employed
as projectionist at the Stevenson
Theatre, Rock Hill, S. C.
panels and letter frames, and Wag-
ner's changable letters.
The accompanying illustrations
show the design of the front; lobby
with its oval refreshment counter, and
the auditorium with its Ideal chairs,
and its carpeted aisles.
The projection room is 18 by 20
feet, with ceiling height 10 ft. It is
completely fireproof, of finished
block wall and cement. Floors and
walls sealed and painted.
Projection, sound and arc lamp
equipment include: Century CC pro-
jectors with Century R5 reproducers.
Magna-Sync penthouse reproducers
for stereo. Lamps are Peerless Mag-
na-Arc and 65 amperes D. C. power
supply is from ventilated Strong
vertical selenium rectifiers.
Circuitry of the equipment is com-
posite but conventional, with im-
provement modifications added by
Carolina Sound Equipment Service,
who designed, engineered, and super-
vised installation of all booth equip-
ment at the Cinema. This includes
all projection and sound equipment,
theatre intercommunication System,
close-in screen curtain controls, auto-
matic screen masking;, remote con-
trols, and "High Fidelity Ceiling Sur-
round" speakers.
Century W5-17 optical and Cen-
tury-Altec stereo magnetic four chan-
nel sound amplifiers, sold by Stand-
ard Theatre Supply Co., are being
used in two 84 in. rack mountings.
Special sound control pre-amplifiers
and switching panels custom designed
by Carolina Sound Equipment Ser-
vice permit operation of front stage
public address and "Sound Reinforc-
ing" facility through the optical
sound amplifier channel and the
ceiling "surround" speakers.
A booth microphone also is provid-
ed for use in paging or making an-
nouncements to the audience through
the "surround" auditorium speakers.
This reinforcement and its PA func-
tion works very well with minimum
acoustic feedback when cardioid
directional microphones are used.
Special loading switches are provided
to transfer the output of the optical
amplifier from the center stage
speaker channel to the ceiling "sur-
round" speakers since these are also
used as fourth track effects channel
from stereo-magnetic film operation.
The optical amplifier rack is pro-
vided with a selective channel stereo-
optical - PA output monitor with
level control.
Special input selector switch is
provided to permit use of the Century
Also 200 other Models of Power Supplies
and Battery Chargers. Write for Catalog.
CHRISTIE ELECTRIC CORP.
34123 W. 67th St., Los Angeles 43, Calif.
14
International Projectionist June 1963
» AUTHORITATIVE
» COMPREHENSIVE
» PRACTICAL
Acclaimed by leading technicians in
the industry as the most comprehen-
sive and down-to-earth handbook pub-
lished to date on the subject of motion
picture projection. Ideally suited for
study and reference by your opera-
tors.
ROBERT A. MITCHELLS
MANUAL OF PRACTICAL PROJECTION
HANDY 5' 2"
SIZE — 4<50 PAGES
ILLUSTRATED — CROSS INDEXED FOR EASY REFERENCE
* Here is one of the most help-
ful works ever published for
the motion picture projection-
ist. A handsomely bound and
profusely illustrated compila-
tion of the BEST of the Robert
A. Mitchell articles that have
appeared in "International
Projectionis t," revised,
brought up to date.
* The author covers clearly
and thoroughly every aspect of
motion picture projection, pre-
senting his material in easily
understood language — not too
technical, yet technically ac-
curate. The Manual is divided
in 8 sections and contains 30
chapters — a valuable refer-
ence work no progressive pro-
jectionist should be without.
!
SECTION HEADINGS
(1) Film; (2) The Projector; (3) Projection - Optics, Screens; (4) The Arc Lamp;
(5) General Projection Practice; (6) Motors, Generators, and Rectifiers; (7)
Sound Reproduction Systems; (8) Projection of Color and 3-D Films, Formulas.
ORDER YOUR COPY TODAY * USE THIS HANDY FORM
INTERNATIONAL PROJECTIONIST
Post Office Box 6174
Minneapolis 24, Minnesota
Gentlemen: please send me copy (copies of ROBERT A. MITCHELL'S MANUAL OF
PRACTICAL PROJECTION. Enclosed is my check (or money-order) for i
NAME
ADDRESS
CITY
ZONE
STATE
$6.oo
per copy
including postage
Booth Left Projector Assembly with Sound and Control wiring Channel
Box Method shown.
W5-17 optical amplifier with mon-
Aural phonograph input, pre-ampli-
fier PA input, mixer or FM radio
and the fourth channel stereo mag-
netic pre-amplifier switcher. Normal
function of the Amplifier is optical
sound from number 2 stage center
speaker.
Stereo-phono record player repro-
duction ( 2 channel ) is used for inter-
mission or incidental music record-
ings. A novel and enhanced reproduc-
tion effect is secured from stereo re-
corded records through use of the
number 2 stage channel speaker for
the number 1 channel stereo and the
Hi Fi flush ceiling "surround" speak-
ers for the number 2 stereo-phono
channel. The public is very congni-
zant of the improvement in sound
reproduction quality, often question-
ing whether recordings heard are
from tape or film.
The Cinema Theatre auditorium
has some "live" acoustic resonant
tendencies at voice fundamental fre-
quencies due to the absence of drape
or wall fabric materials on side and
rear walls or ceiling.
Acoustic plaster is used over the
rear curved auditorium cement wall.
The ceiling consists of eleven tilted
panels in three large sections. These
panels consist of steel angle iron
frames and metal lath, covered with
acoustic plaster. They are spaced
from and suspended by steel wire
and anchor bolts from the pre-cast
concrete ceiling beams and cement
beam stems. This spacing and "tilt"
installation provides a variable acous-
tic pocket but with negligible surface
absorption. The side walls to ceiling
consist of perforated and corrugated
aluminum over fiberglass insulation,
decorative as well as fireproof.
Resonant damping so acoustically de-
sirable to securing intimate screen
presence from stage speaker repro-
duction is minor, but the decorative
effect and new commercial materials
design is modern and unique. In-
direct auditorium lighting is provided
around ceiling panels and is best
controlled using conventional Mazda
multi-colored tungsten lighting strips
and motorized dimmer. iP
XENON Projection Lamps
Continued from Page 10
mirror, the light will become bluish — an excessively high
color temperature. In either case, the light will become
annoyingly dim.
Xenon Arc Always Daylighr-Whire
The xenon arc is free from both these causes of color
change. It emits light having a constant color tempera-
ture of about 7,000° regardless of current changes,
which affect only the brightness of the emitted light.
There are no variations in color over the emitting area
( the xenon arc between the two tungsten electrodes ) , and
there is no burn-away of electrodes to introduce dis-
turbances in the optical focus.
Though smooth and continuous, the spectrum of the
high-pressure xenon discharge reveals a moderate emis-
sion peak in the blue; but the spectrum has no dark
gaps; and the blue peak introduces no perceptible visual
effects or distortion of the colors in color prints.
The invisible portions of the xenon-lamp spectrum
produce unimportant physical effects. Xenon radiation
is proportionately richer in ultraviolet radiation than
is the HI carbon arc, and quartz transmits ultraviolet
rather freely. Ultraviolet rays act upon the oxygen of
the air to produce ozone, a gas which is perceptible
to the projectionist by its chlorine-like, but not un-
pleasant, odor. Ozone does no harm in the small quan-
tities produced by projection light sources.
just beyond the red end of the visible spectrum
16
of xenon we find a rather large energy peak. This is in
the infrared region. Infrared rays contribute nothing
to the luminance of a light source, but increase the
heating effect of its radiation. The xenon infra-
red peak is nevertheless neither intense enough nor broad
enough to require use of heat filters where these would
not be required by other considerations. Lumen for
lumen, xenon radiation is a trifle more heat-producing
than HI carbon-arc radiation, rather cooler than LI arc
radiation, and considerably cooler than tungsten-filament
radiation.
Its color temperature of 7,000° K makes xenon light
an extremely close match for diffused daylight or Stand-
ard Source C. The match is probably exact after the
xenon light has passed through film, lenses, and port
glass, and undergone reflection from the screen surface
as well as from the silvered lamphouse mirrors, all of
them elements which tend to yellow the light and thereby
lower the color temperature. It is interesting to note that
diffused daylight (approximately 6,500° K) has been
chosen as the standard white for both black-and-white and
color TV picture tubes.
The physical structure and operation of the xenon
short-arc bulb will be described next month — mighty im-
portant considerations for the thousands of projectionists
who may soon be called upon to operate this clean,
convenient, and very pleasing light source.
(To Be Concluded)
International Projectionist June 1963
The grand foyer retains the sweep of the old Empire
Theatre promenade, and features curved sales counter for
soft drinks, confections and cigarettes.
The projection room with two Philips 70-35 mm projec-
tjrs, fitted with Ashcraft Super Cinex arcs, a Philips FP7,
and a Westrex transistorized sound system.
MGM's New Empire Theatre in London
Occupies a Famous Site in Leicester Square
LONDON. ENGLAND— Only the
outside walls remain of the Metro-
Goldwyn-Mayer old Empire Theatre
in Leicester Square, and the new
Empire Theatre on this famous site
is advertised as the most luxurious
cinema in Europe. Ii opened in late
December with "Jumbo" the attrac-
tion.
The new Empire shares the build-
ing space with the Mecca Ballroom.
with the theatre above the ballroom —
the cinema is a few steps from the
street level.
The architect had to design the
theatre within a theatre, leaving the
existing structure without altering it.
\n\ interference with the foundations
on Lisle Street and Leicester Place
would have affected the stability of
the retaining walls.
I he heating and air conditioning
equipment is in the sub-basement, and
above this is the Mecca Ballroom.
which operates many ballrooms in
London. North Ireland and Scotland.
The new Empire has a seating cap-
acity of L,330 seats, whereas the old
Empire could accommodate 3,500.
In other words, the new theatre is in
step w ith the today's economy in the
industry .
The old Empire's gilt columns,
(lassie freizes and ornate ceiling are
all pone. In what was originally the
circle of the old theatre is a new
luxuriously modern cinema, with the
finest in projection and sound, the
latest type of super-comfort seating
and generous leg room throughout.
Construction of the auditorium
floor is insulated so that it excludes
any noise from the dancing in the
ballroom, below the auditorium. Its
base is a slab of concrete five inches
A rear view of the auditorium from the stage showing
the concealed lighting and the projection booth, designed
in consultation with IP columnist Stanley Perry.
International Projectionist June 1963
A view of the auditorium, which now seats 1,330 peo-
ple— the old Empire could accommodate 3,500 — in modern
decor with its ceiling and walls of plaster tile.
17
thick, steel girders form walls separa-
ting the auditorium and the grand
foyer.
The lobby contains four cashiers
booths, faced with blue Beige marble,
along the left-hand wall. The vesti-
bule contains two short flights of
stairs across its full width. Up the
stairs the patrons get a view of the
grand foyer. The grand foyer is 130
feet long and features a curbing re-
freshment counter where ice cream,
confectionery, soft drinks and cigaret-
tes are sold. It's decorated in modern
style and preserves the large prom-
enade of the old Empire.
The auditorium is the stadium type
with 642 seats in the ground floor
and 688 chairs in the stadium. The
auditorium is fan-shaped and like
the Radio City Music Hall — which
pioneered the lighting design — the
concealed lighting spreads to the six
facets in a rainbow of colors by the
18 three-color circuits.
Seating is staggered. The Ameri-
can Seating Co.'s lounge chairs are
PROJECTOR
CARBONS
Better
Light!
Lower
Costs!
RINGSDORFF CARBON CORP. East McKeesport. Pa.
installed. The seats are installed at
a distance of three feet back-to-back.
The auditorium color scheme is
mink and gold. The contour curtain
— it will operate electrically to any
pre-determined shape — is gold. The
curtain has 15 vertical lines, so it can
raise, tableau or drape. The vertical
lines are controlled by 15 separate
motors operated from the projection
room.
Stanley Perry, who is M-G-M pro-
jection supervisor, and well known
to IP readers because of his contribu-
tions to this journal, has designed a
projection room which is roomy.
Perry, who had charge of the booth
when the old Empire opened in 1928,
is the only person from the original
staff still with the theatre.
The new Empire's projection room
accommodates two Philips 35-70 mm
projectors, a Philips FP7 projector, a
spotlight, Westrex sound and the
usual accessories.
The Philips 35-70 mm projectors
are mounted with arc lamps by Ash-
craft Manufacturing Co., Super Cinex
running at 135A. The water supply is
taken from the mains, but Ashcraft
water-coolers are provided for stand-
by supply.
The Westrex sound system picks
up its signals from the magnetic
heads, but for optical sound a Wes-
trex photo-transistor is installed. A
pre-amplifier and line amplifier are
fully transistorized. A knob on the
operating side of the pre-amplifier
gives change-over between the six-
track, four-track and optical sound.
Four picture sizes: the wide-screen
picture, with a ratio of 1.75 to 1,
measures 40 ft. by 23 ft. ; the Cinema-
Scope ratio is 2.32 to 1, the picture
measuring 50 ft. by 21 ft. 6 in.; Pana-
vision ratio is 2.7 to 1. and the screen
size is 64 ft. by 23 ft. 6 in.; Todd-AO
INTERNATIONAL PROJECTIONIST
Post Office Box 6174
Minneapolis 24, Minnesota
□ 1 year (12) issues — $3.00
□ 2 years (24) issues — $5.00
FOREIGN: Add $1.00 per year
Enter my subscription for
Na
me
Address
City
Zone
State
18
the actual ratio is 2.21 to 1, the
picture measuring 60 ft. by 27 ft.
The screen, a Perlux. measures 63
ft. by 30 ft.
Alongside the projection room is
the rectifier room. It contains four
Hewittic silicon rectifiers, all operat-
ing from 415V three-phase supply. At
the end of the projection room is a
compact control system for the house
and stage lighting.
Other Westrex equipment installed
in the new Empire includes two stage
amplification systems, record playing
system feeding to 18 loudspeakers
in the foyer, and a manager's an-
nouncement system. iP
Demand Reported for
Ashcraft Core-Lite Lamp
Since the first installation of Ash-
craft Core-Lite arc lamps and rec-
tifiers was made in the Palace theatre
in Orange, N. J., eight other theatre
owners located in the New York sales
area have installed them, or have
signed orders for them, the National
Theatre Supply Co. reports:
Cinema I, New York City; Cen-
tral theatre, Cedarhurst, N. Y. ; Stan-
ley-Warner Theatres, New York;
Strand Theatre. Astoria, New York
City; Plainfield theatre, Edison
Township, N. J.; Turnpike theatre,
East Brunswick, N. J.; Walter
Reade-Sterling's Barclay Farms the-
atre, Cherry Hill, N. J., and a new
Skouras Theatre at Closter, N. J.
Interested theatre owners were in-
vited to visit theatres where tests were
conducted.
The report states that in a compar-
ative test recently conducted at
Charles Moss' Central theatre in
Cedarhurst, between a Core-Lite lamp
burning an 11mm x 17%" black ro-
tating positive carbon, and a lamp
burning a 9mm x 14" copper-coated
positive carbon, the Core-Lite gave
notably uniform light distribution de-
spite the necessity to use projection
lenses of S^-inch E. F. for Cinema-
Scope, and 214-inch lenses for stand-
ard because of a 47-ft. picture at 90
ft. throw.
Foot-lambert readings were taken
by Larry Orthner of the C. S. Ash-
craft Manufacturing Co.; Milton
Berk, supervisor of projection of B.
S. Moss Theatres; and Allen Smith
of National Theatre Supply. Accord-
ing to the readings reported, the Core-
Lite developed an increase of 61%
in side lighting over the lamp burn-
ing the 9mm copper-coated carbon.
Core-Lite distribution was 81%,
compared with 53%. iP
International Projectionist June 1963
Today's audiences respond to technical quality in showmanship. . .quality that starts with sharp
negatives and sharp prints. So, go Eastman all the way— negative and print stock. And always give
the laboratory time to do its job right. Most important, it you have questions— production, processing,
and projection— always get in touch with Eastman Technical Service. For more information on this
subject, write or phone: Motion Picture Film Department, EASTMAN KODAK COMPANY, Rochester
4, N. Y. Or— for the purchase of film: W. J. German, Inc., Agents for the sale and distribution
of EASTMAN Professional Film for Motion Pictures and Tele- ■■■■■■■■■»■■■■■■■■■»■■ ■ ■ rr
vision. Fort Lee, N. J., Chicago, III., Hollywood, Calif. ^35!^lPSy2,^E^BSE^3
« ■ ■■■■«»«■■■»»■■■■■■»
CARBONS, INC
Thru Lorraine Arc Carbons, distributors of
"ORLUX" arc carbons to the_ Motion Picture Industry
"ACTINA" carbons to the Graphic Arts Industry
"SOLAR" carbons to the Environmental Sciences Industry
'PtaucUty rf" COMPETITOR^
Only 1 in 20 Drive-Ins, {perhaps your competitor) has even the minimum
screen illumination (4.5 foot lamberts at the center of the screen with a stand-
ard width aperture and the shutter running, measured from a midpoint on
the ramp center line), recommended by The Society of Motion Picture & Tele-
vision Engineers.
Which of these projection lamps will properly illuminate YOUR screen?
Here's a guide:
PICTURE WIDTH
50 FOOT
60 FOOT
70 FOOT
PROJECTION ARC
_14" REFLECTOR 65 AMPERES.
80 FOOT.
90 FOOT.
.18" REFLECTOR 11 MM LOW CURRENT RANGE.
_18" REFLECTOR 11 MM HI CURRENT RANGE OR
13.6 MM LOW CURRENT RANGE.
_18" REFLECTOR 13.6 MM HI CURRENT RANGE.
.21" REFLECTOR BLOWN ARC LOW RANGE.
100 FOOT AND UP_
.21" REFLECTOR BLOWN ARC HI RANGE.
IF YOU'RE FED UP—
with a dismal boxoffice, brighten it up by brightening up your screen. The
theatres with inadequate screen lighting are the theatres with the anemic
boxoffices.
Strong's complete line of lamps, includes one which will project the brighter,
patron-pleasing pictures in your theatre. Discuss your needs with your equip-
ment dealer now.
FOR LITERATURE WRITE—
THE
ELECTRIC CORPORATION
31 CITY PARK AVENUE
TOLEDO 1, OHIO
A SUBSIDIARY OF GENERAL PRECISION EQUIPMENT CORPORATION
luminous powers of lamps, the lumen values indicate
:he light flux from the projector without the shutter.
(Divide by 2 to find the approximate value with the
shutter running.)
Table 2 supplies similar data for the three models of
xenon projection lamp equipment produced by the Strong
Electric Corporation of Toledo, Ohio.
TABLE 1
SIMPLIFIED HI CARBON-ARC LAMPS
Carbon Trim
Amps
Lumens
(No shutter)
Screen Width for 10 Footlamberts
85% Matte
150% Directional
7 mm-6
mm
40
7,000
20'
26'
7 mm-6
mm
42
8,600
22'
29'
7 mm-6
mm
46
10,000
24'
32'
7 mm-6
mm
50
11,700
26'
34'
7 V2 mm-6 Vi mm
55
12,500
27'
35'
8 mm-7
mm
60
13,100
28'
36'
TABLE 2
XENON
LAMPS
Xenon Bulb Wattac
ie
Lumens
(No shutter)
Screen
Width for 10 Footlamberts
85% Matte
150% Directiona
900 W
4,500
16'
21'
1600 W
9,000
23'
30'
2500 W
12,500
27'
35'
LACK -A A +
WIRING DIAGRAM
PLATE 1799
NO. 14
STRANDED
WIRE
NO. 4
STRANDED
WIRE
±i±
LINE 000
SAFETY
SWITCH
FIG. 2 — Wiring schematic for a xenon projec-
tion lamp powered by a 3-phase rectifier.
A comparison of these two tables serves to show that
the highest-powered xenon projection lamp (the 2500-W
model) is equivalent to a Superex-type lamp burning a
hypothetical 7% mm - 6V2 mm carbon trim at 55 amps,
to give 12,500 screen lumens without the projector shutter
running. This is why we say that theatres needing more
than 55 amps, of arc current for adequate screen illumina-
tion must make use of high-intensity carbon arcs.
Xenon lamps have already proved popular in hundreds
of the smaller theatres in Europe and in dozens of preview
rooms in the United States. Their use in American
theatres has only just begun, and with extremely gratify-
ing results from the point of view of all concerned —
the moviegoer, the projectionist, and the theatre owner.
And once again we must point out the fact that color
films are seen at their best when projected by pure day-
light-white xenon light. The xenon lamp is undoubtedly
very desirable for the critical visual evaluation of color
prints in studio and laboratory projection rooms because
of the freedom from color-temperature changes of this
light source.
Anatomy of Xenon Bulb
The structure of the xenon short-arc bulb is simplicity,
itself. The transparent "envelope" is made of fused
quartz, a material which is more resistant to the softening
effects of heat than ordinary glass, and much less likely
to crack from sudden temperature changes. Even so,
it is plain commonsense to protect the bulb by preventing
down-drafts and rain from entering the lamphouse
through ventilating pipes.
The two cone-shaped electrodes inside the strong
quartz envelope are made of pure tungsten, a silvery-gray
metal which has a very high melting point. The larger
electrode is the positive one (anode) , and is positioned
above the smaller negative electrode {cathode) when the
bulb is installed in the lamphouse.
The bulb is filled with the chemically inert gas xenon
under a pressure of from 8 to 10 times that of the
atmosphere. The pressure increases to 20 or 30 atmos-
pheres when the bulb is in operation. Any increase in
the current at which the bulb is burned increases the
temperature, and hence the pressure of the gas inside it.
Xenon, itself is a very rare constituent of the air ( 1
cubic foot of xenon in 15,000,000 cu. ft. of air), and is
obtained by the fractional distillation of liquefied air.
This is the only way to get it because xenon, like
its sister elements of the helium family, forms no chemical
compounds whatever.
Igniting the Xenon Bulb
The flamelike arc in a xenon bulb is started by a
high-voltage discharge which breaks down the electrical
resistance of the gas and establishes a conducting path
between the two tungsten electrodes. The source of
momentary high voltage (20,000 - 30,000 volts) is an
"igniter" device consisting of an induction coil and
capacitors, and is usually installed as a compact unit
inside the lamphouse to keep the high-voltage leads as
short as possible.
Once a conducting path has been established by the
high-voltage spark (applied for only a fraction of a
second), the regular current supply for the lamp takes
over. This is ordinarily a rectifier designed to furnish an
initial voltage of 60 to 75 volts to establish a direct-
current discharge. The arc thus established, the voltage
spontaneously drops to the normal operating value of 20
to 30 volts in a current range of 30 to 70 amperes, de-
(Please turn to page 16)
International Projectionist July, 1963
WILL ROGERS TOUR — Ned
Depinet (left), president of Will Rogers
Memorial Hospital and O'Donnell
Memorial Laboratories, exchanges greet-
ings with Richard F. Walsh, interna-
tional president of IATSE, during a
tour of the hospital and laboratories at
Saranac Lake, N. Y. During the meet-
ing Walsh was appointed chairman of
the executive committee and reelected
to his post as chairman of the board of
directors. iP
K. \. ROSENBLATT
Edward \. Rosenblatt ~>2. of Sher-
brook Drive. Charlotte, N. C. died
in late spring in a loeal hospital.
"Eddie" a> he was well known to
motion picture exhibitors and pro-
jectionists and his many friends
throughout the two Carolinas. was a
sound engineer and assisted many
independent exhibitors to achieve
good operation during the period
when television was making its
strongest debut in the Carolinas.
I.oved bv all who knew him or
ever had dealings with him, "Ed"
began to diversify in business about
1959 and established with his associ-
ates a manufacturers agency distri-
buting parking gates and municipal
fire and police department technical
equipment, a business in which he
was very successful. In addition to
his mother, survivors include his
wife, Marv Nell Rosenblatt: two
sons, James \shlej and John Ed-
ward at home. His wife. Mary Nell
lias long been associated with the
Carolina and Atlanta "Wompis"
and heartfelt sympathy by the indus-
try is ixraciouslv extended. R.W.R.
iP
H. A. HARTMAN DIES
Harry A. Hartman. 70. retired
tiieatre engineer for the Wil-Kin
J heatre Corp. for many years and
traveling engineer for theatres in the
Carolinas for the past 20 years, died
recently at his home at 1100 Andover
Road. Charlotte. N. C. Mr. Hartman
made many friends in the Carolinas
durins the early transition to sound
and Cinemascope motion pictures and
his many friends express sympathy
to his surviving family. R.W.R.
iP
You Get More
For Your Money
WITH
IBIGAWA
CINEMA
CARBONS
It Will Brighten Up Your
Screen At The Least Cost
MAKE YOUR OWN TEST
AT OUR EXPENSE
SEND FOR FREE SAMPLE
•
WRITE FOR DETAIL FOLDER
NOSAWA & CO., LTD. Sole U. S. A. Agent
180 Madison Ave., New York 16, N.Y.
IBIGAWA ELECTRIC INDUSTRY CO.; LTD.
Manufacturer — Japan
NOTICE: we welcome inquiries for
TERRITORIES FROM SUPPLIERS AND
DISTRIBUTORS.
International Projectionist July. 1963
BETTERS TO THE EDITOR
For a second time I find myself
tempted to contribute something to
IP of a nostalgic rather than scienti-
fic nature. | See WHO REMEMBERS
WHEN? in IP for September 1959,
page 20). However my recent acqui-
sition of an old Powers 6-B mechan-
ism as a museum piece brought to
mind a most amusing incident of the
silent days which I cannot resist
passing along.
In the early 20's I served for a
time as projectionist I they called me
"that operator" then) for a mid-
western college where movies, open
to the general public, were run each
week-end in the gymnasium. The pro-
jectors consisted of a pair of used
Powers, with hand-fed AC arcs ener-
gized bv one Bell and Howell com-
pensator. (One arc had to be turned
off as the other was struck, a pro-
cedure which gave a nice fading ef-
fect on changeovers.
The "projection room"' which was
located at and partially over the edge
of a small gallery at one side of the
gymnasium, was an asbestos board
enclosure with holes sawed out. more
or less rectangular in shape, for pro-
jection and observation.
Drop fire-shutters were conspicu-
ous bv their absence. "Ventilation"
was provided by the simple expedi-
ent of leaving the door open so that
"fresh" air from the audience would
flow in through the open ports.
Now this little incident that I am
about to recount couldn't possibly
have happened had it not been for a
series of existing conditions to all
intents and purposes completely un-
related. (Note: Those of the young-
er generation who never ran a Pow-
ers projector will either have to use
the imagination or refer to the early
editions of Richardson's Handbook
of Projection to visualize some of
the action. ) Here, then, were the
existing conditions:
1. There was no glass in the ports.
2. There was a shelf extending
from just below the mechanism of
each projector to the bottom of its
port, forming a convenient place for
tools, oil can, etc.. but when the
ensuing events took place there was
■Just try to scratch or destroy the harder
than glass front coating of a
TUFCOLD
FLAKE AND PEEL-PROOF
FIRST SURFACE
COLD REFLECTOR
—then you'll see why it's
Guaranteed 2 Years
-TWICE AS LONG against
coating deterioration
Replace uour
old reflect or 4 now
nothing on the shelf of the right-
hand projector.
3. The Powers mechanism ( we
oldsters will recall I had two remov-
able plates on the front. One carried
the lens mount, and a smaller one
below bore the patent information. I
had removed the latter to facilitate
cleaning inside the mechanism.
4. The Powers mechanism had a
"loop-setter." Again, for the younger
generation, let me explain that this
device consisted of a roller between
the intermittent and take-up sproc-
kets around and clearing which the
lower film loop was formed. If the
lower loop became lost, the tighten-
ing of the film lifted the roller which
in turn threw the take-up sprocket
out of gear until a new loop formed.
The re-forming loop permitted the
roller to drop back to its normal
position thus starting the take-up
sprocket again. "The whole train of
operation is automatic — its results
instantaneous." ( Richardson's 4th
Edition Handbook of Projection,
page 649, Instruction No. 40.)
Now for the action. One evening
when the first show was well along
and I was threading the left projec-
tor, an unearthly scream sounded
from the audience. I thought little of
this, however, since the feature was
a mystery melodrama and there was
a large sprinkling of youngsters in
the audience. But all of a sudden an
usher rushed into the booth shout-
ing: "Stop the show, quick!" Not
being unduly excitable I asked him:
"How Come?," since I had a good
picture on the screen and the ma-
chinery sounded normal. He got as
far as: "A woman . . ." when an-
other scream hit the air. Coin-
cidently my eye caught a strip of
film gliding snake-like from the open
mechanism of the right-hand pro-
jector along my empty tool-shelf and
out the open port.
Instantly I flipped the dowser, shut
off the motor, and rushed out to the
edge of the gallery and looked over.
By this time the house lights had
been turned on and all eyes were
focused on two dear old ladies who
were sitting under the gallery just
below the right-hand projector port.
They were petrified with fright, with
\ irtually a hundred feet of nitrate
film entwined about their necks and
arms with more draped over their
laps and on down around the floor!
I rushed down and extricated the
ladies, tried to calm them down,
apologized for the annoyance, clean-
ed up the film and then went back
upstairs to see what had actually
happened. Then I discovered that the
loop-setter had been activated and
then become stuck, thus immobiliz-
International Projectionist July, 1963
ing the take-up sprocket while per-
mitting the film to run off the inter-
mittent sprocket, and. because of the
shelf, the lack of a front plate, and
the open port, to continue on out and
downward.
This was one occasion when two
members of an audience certainly go/
the feel of the picture.
Dm. C. Blanchard
Department of Audio Visual
Education
Claremont Graduate School
Claremont, California
There are lots of old-tirners in the
projection game that had experi-
ences such as this, and we think it's
pleasant reading about them. We
thank Mr. Blanchard and offer this
column for others' reminiscences.
Ed. iP
Spirit of 1-7-7-6
At 25-30 Club
The Spirit of 76 prevailed at the
final meeting of the summer for the
25-30 Club at the Hotel Claridge in
New York. Good will toward all was
the keynote of the speeches, short
and inspiring.
To an assemblage well aware of a
troubled world, the speakers stressed
their gratitude to the projectionists
for a minimum of labor, health and
political worries. "For this we should
be thankful." declared president
William C. Anderson.
Abraham Kalmus. returning from
a world-tour of camera wonders, was
honored. His work was looked upon
as a credit to all. Little else to do
by way of appreciation but for Abe
and Bea Kalmus to throw a party,
which they did. As Morris J. Rotker
pointed out, "It does us all good to
see the smiling faces of the boys as
they entered this room."
"How much better it is to hear
the wisecracks our members heard
on the way to the meeting than sly
digs and unpleasant rumors." added
Mr. Rotker. the recording secretary.
And in good humor the champ
moocher, name kept secret, who bor-
rows cigarettes. brought hearty
laughter. All but the man's name was
revealed, although it didn't mean
anything because his theatre' was
mentioned and his own laughter was
loudest.
The second Thursday in January,
1%4, was avowed for the announced
big annual event at a New York
hotel. iP
IA Takes Firm Stand
On Uninspected Film
The following letter has been sent
to all IATSE Operators and Mixed
locals. Film Exchanges, General
Managers and the Minister of Travel
Publicity for the Province of On-
tario in Canada bv the International
vice president A. L. Pat Travers in
his capacity as business manager of
Toronto Operators Local 173:
"The condition of film being
shipped to theatres has. over the past
years, become progressively worse.
This is understandable, as the in-
specting personnel has been reduced
considerably.
"Appeals to the distributors, while
being recognized, have not produced
the desired results. The director,
Theatres Branch, has apparently
withdrawn from film exchange su-
pervision, which has certainly not
helped.
"The projectionist, usually work-
ing alone since the reduction of
booth personnel, and with ever in-
creasing responsibilities, does not
have the time to repair film which
should be received in good condition
from the supplier.
"A motion has therefore been
passed by Focal 173. Toronto Mo-
tion Picture Projectionists Union, at
a regular meeting: 'That film will be
run as received from the exchange
or repaired on an overtime hourly
basis charged to the theatre.' This
rule will become effective at once."
iP
Strong Electric Has
New Brochure on
Rectifier Models, Uses
A new brochure on rectifiers for
use as powrer supply for projection
arc lamps has been made available by
The Strong Electric Corp. Featured is
the Bi-Powr silicon stack transformer-
rectifier for use with two lamps, now
available in four ratings: 60-85
ampere /35-45 volts, 75-105 ampere
7 48-61 volts, 90-135 ampere / 56-70
volts, and 120-160 ampere / 58-75
volts.
The Bi-Powr employs two silicon
stack assemblies, one for each out-
put. The life expectancy is greatly
lengthened due to the fact that there
is no "aging" of the elements. Since
there is no aging, there can be no un-
balance in the units, and hence, no
flicker on the screen caused by un-
balance in power supply.
A copy of the brochure will be sent
to anyone addressing a request to the
Strong Electric Corp., 31 City Park
Avenue. Toledo 1. Ohio. iP
There's Plenty for You At
CENTURY!
. . and from CENTURY only
dramatic, New ALL TRANSISTOR
sound systems
*True high-fidelity,
distortion free.
*Low installation cost,
minimum space needs.
Increased reliability,
less maintenance.
No vacuum tubes, no
photoelectric cells.
*and the only American-made 70 mm 35
theatre projection systems
SEE
YOUR CENTURY
DEALER
. . . for bigger, brighter projection.
CENTURY PROJECTOR CORP.
New York 19, N. Y.
International Projectionist July, 1963
Specialists in Light Projection
CARBONS, >nc.
through
division
PRESENT THEIR NEW
DIVISION
for
LAMPHOUSES & POWER SUPPLIES
employing the compact Zenon Arc!
featuring
^/LeTRO-N LAMPHOUSES
by Cimeneccanica of Milan, Italy,
leading motion picture equipment mfgrs.
yLxTJZOJPf POWER SUPPLIES
by Christie Electric Corp., makers of
the finest power supply units.
XeTRON Lampnouse with 450 watt bulb. Equip-
ped with 5" reflector and diffuser. Replaces 750^
1,000 watt incandescent lamps and provides three
times the light flow with Kelvin temperature,
similar to hi intensity carbon arc.
XeTRON 1600/2500 Lamphouse
c.mplete with associated optics,
hear transmitting, hard, front-
ccated 16" reflector, auxiliary
mirrors and starting devices.
XeTRON Silicon Power Supply by
Christie Electric Corp.
\ theatre supply deal-
er- in all parts of the U. S. In fact,
installations of the new Model \\ll
70 35"s are in process in Pittsburgh,
I'a.: Portland. Oregon: San Juan.
Puerto Rico and Poughkeepsie. !Y Y.
In a joint announcement from Niels
lu' en. general manager of Norelcos
motion picture equipment division,
and Fred Pfeiff, technical manager, it
was stated that more than 1 <"> impor-
tant technical improvements have
be 'ii incorporated into the equipment
by the famed engineering section of
the North American Philips Co.
Vmong them are: New dual split
70 35 magazine shafts which elimin-
ates need for theatres to purchase
special 35mm reels with 70mm
flanges: new non-glare plexiglass
observation window in projector
door: new threading guards on mag-
netic shield and idler roller: new im-
proved intermittent assembly: new
oil vapor leak protection: new dowser
assembly: simplified built-in water
cooling circuit: heavier main drive
gear set: new single motor drive;
new 2-speed clutch : new reduced tor-
que motor: new 4-pole motor start
contactor: optional optical pre-ampli-
I INTERNATIONAL PROJECTIONIST J
fier: new easy installation lower
compartment door: new cast alumin-
um lamphouse bracket with adjust-
able slide for easy alignment of lamp:
new spiral gear take-up drive; new
graphite impregnated nylon idler and
pad rollers: and a pre-wired magnetic
cluster block.
The increasing amount of 70mm
product in release and in production,
plus exceptionally large boxoffice
grosses these pictures have experien-
ced, heralds a bright future for 70mm
projection. Norelco states. With over
150 theatres in the U. S.. and some
300 others throughout the world
equipped with Norelco 70 35"s. Nor-
elco's experience in this field is ex-
tensive. In Vpril of this year, the
•Vcadenn of Motion Picture Arts and
Sciences presented a special award
for outstanding technical achievement
to the North American Philips Corn-
pan) for the design and engineering
of the Norelco Universal 70 35mm
motion picture projector. I See story. I
Previous Projector
Wins Academy Award
The Norelco Universal 70 35 mm.
projector received one of the special
awards from the Aeadeim of Motion
Picture Arts and Sciences in recogni-
tion of outstanding technical achieve-
ment for the showing of the newer
wide gauge films. It is the first such
award in the projection field since
1059.
Accepting a plaque for the North
American Philips Co. was Fred J.
Pfeiff. technical manager of the
motion picture equipment depart-
ment of the firm. Mr. Pfeiff has been
closely associated with the develop-
ment of the 70/35 mm. projection
system since it first became available
in 1055. Originally designed and
developed through the joint efforts
of the American Optical Co. and
Philips, this projector introduced the
70 mm. Todd-AO process — a 1957
Academy Award winner — into movie
theatres. Jan Kotte of Norelco is to
be commended as the original de-
signer of this equipment.
Today there are more than 450
installations of the Norelco Universal
70/35 Projector in 35 states, Can-
ada and other countries.
In receiving the award, Mr. Pfeiff
stressed that motion picture audi-
uly, 1963
ences the world over are enjoying
greater clarity and better quality of
screen images with less eye strain,
thanks to the wider films and the
award-winning Norelco projection
equipment.
And there are important benefits
to the exhibitor, Pfeiff pointed out.
explaining that a single 70 mm. print
has been played for as many as 1600
runs, film damage is greatly reduced,
and the Norelco 70/35 projector may
be converted in minutes for either 70
mm. or 35 mm. operation, providing
the theatre owner with greater ver-
satility in presenting the latest films.
North American Philips Company.
Inc. also produces the new Norelco
25 mm. Pulse-Lite shutterless pro-
jector for smaller theatres, a 35 mm.
projector for arc lamp operation, as
well as professional l<> mm. equip-
ment.
Built primarily for 70 mm. with
the added convenience of 35 mm.,
the Norelco Universal 70/35 pro-
jector enables audiences to see easily
the tiniest photographic details in
such current films as "Lawrence of
Arabia", "Mutiny on the Bounty".
'"Cleopatra", and many more now in
production. iIB
NORELCO Wins Academy Award —
Fred J. Pfeiff, technical manager of the
motion picture equipment department
of Norelco, proudly holds award re-
ceived at the 35th Annual Academy
Awards. The Technical Award was
presented to Mr. Pfeiff for his firm's
development of the Norelco Universal
70/35 mm. projector, an innovation in
the showing of wide gauge films.
11
HEYER-SHULTZ
UNBREAKABLE METAL REFLECTORS
TOP SCREEN
ILLUMINATION
WILL NOT
PIT OR TARNISH
5 YEAR
GUARANTEE
FACTORY
REFINISHING
SERVICE
S«e TOUr Manufactured by
TAeOfre Supp/y Deafer HEYER-SHULTZ, IllC. Cetfar Grove, N. J.
How electrical noise is produced . . .
calculated . . • measured . . . controlled
Here are the basic facts about electrical noise — how it originates
in circuits . . . what terms describe it . . . how to measure it . . .
how to design circuits to minimize its undesirable effects. The
physical nature of the various sources of noise are clearly de-
scribed, including such sources as thermal agitation or resistance
noise . . . shot noise in vacuum tubes and semiconductor junctions
. . . noise from spontaneous emission of electromagnetic radiation
. . . and noise in gas discharges. This practical book also explains
auxiliary mathematical techniques, and discusses the relation of
signal and noise in various types of communication systems. For
ease in use, the simple tuned circuit associated with a device for
measuring average power is made the basic tool for analyzing
noise.
ELECTRICAL
270 pages, 6x9
105 illustration*
$10.00
By WILLIAM R. BENNETT
Data Communications Consultant, Bell Telephone Laboratories, Inc.
Each chapter in this helpful book begins in
a simple, practical manner and works toward
more complicated examples. For example, prop-
erties of thermal noise and its relation to black-
body radiation are deduced from basic laws
of thermodynamics and statistical mechanics.
You also will find a clear treatment of elemen-
tary quantum mechanics in discussions of the
maser and of noise in semiconductors. And, in
describing noise properties of various devices,
the book fills in your working background with
basic facts on junction diodes — transistors —
gas discharge tubes— klystrons— traveling wave
amplifiers— and others. Both independent and
dependent noise sources are analyzed.
In addition to the standard theory of noise
figure and its significance, a treatment is given
of the more comprehensive Haus-Adler theory
of noise measure. Throughout, the book stresses
the universality of noise-like phenomena. Noise
formulas for diodes and transistors; noise gen-
eration to meet specifications; design of ampli-
fiers for minimum noise effects— these and many
other topics "are covered. A comprehensive re-
view of noise in the various methods of signal
transmission such as amplitude modulation . . .
frequency modulation . . . and the different
lands of pulse modulation is included.
12
CONTENTS
1. General Properties of Noise
2. Thermal Noise
3. Distribution of Magnitudes in Noise Sources
4. Noise in Vacuum Tubes
5. Noise in Semiconductors
6. Noise in Electromagnetic Radiation
7. Noise-generating Equipment
8. Noise Measurements and Techniques
9. Design of Low-noise Equipment
10. Application of Fourier Analysis to Noise
Problems
11. Noise in Communication Systems
INTERNATIONAL PROJECTIONIST
Post Office Box 6174
Minneapolis 24, Minnesota
Please send me a copy of "Electrical Noise"
by William R. Bennett. (I enclose $10.00.)
Name
Address
City & State
Ibigawa Theatre
Carbons Introduced
To U.S. Market
NEW YORK— Projection carbons
which have been in use in Japan and
internationally for many years have
been introduced to the U. S. market
through the import agents here,
Nosawa & Co., Ltd., 180 Madison
Ave., New York 16, N. Y. Telephone
is LE 2-1198.
Produced by the Ibigawa Electric
Industry Co., Ltd., Ogaki, Japan, the
Ibigawa carbons are said to provide
brilliance, steadiness and correct
color balance, thus affording excellent
projection light with economy. High
intensity AC and DC carbons are
available, the latter in non-rotating or
rotating positive type. Brochures
from the agents here describe trims
and lengths available. Carbons for
spotlight and studio lamps are also
available.
Ibigawa cinema carbons were
granted the Ohkouchi commemorative
award in 1958 because of the produc-
tion methods used. iP
SPECIAL RATES
On group subscriptions to IP for
IATSE Locals and audio - visual
groups. Write for details.
GIVE UP? — If you like guessing
games, we'll give you three tries at
identifying these weird-looking tri-
angles. Or if you give up easily, as we
do, here's the answer — they are pyro-
metric cones used for telling exactly
when a batch of motion picture projec-
tor carbons is ready to leave the oven
after the baking cycle. They are but
one of the quality control techniques
used by National Carbon Co., division
of Union Carbide Corp., to produce
projector carbons that provide motion
picture audiences with today's finest
screen light. Two of the heat-sensitive
cones are placed in every baking fur-
nace, and when one is leaning and one
sagging, as shown, the proper tempera-
ture has been reached and the projector
carbons are removed for further pro-
"~ cessing.
International Projectionist July, 1963
New \ oik — The Baronet and the Coronet
Theatres occupy a single building on Third Ave. at
59th St. Both theatres share a facade which rises
to a height of 68 ft., but they have different en-
trances at street level.
The cost was $1,500,000 when the Walter Reade-
Sterling Group remodeled the Baronet and put a
tw in theatre above it.
Instead of entrance doors the Coronet has an
"air curtain" which gives an unobstructed view of
the vestibule and lobby. Through the marquee
soffit warm air is blown at high velocity, passing
continuously, to form an air barrier to prevent the
infiltration of cold air in the wintertime.
The Coronet's seating capacity is 598, larger
than the Baronet which has 118 scats. The Coronet
is equipped with Centur) 35mm projectors with
\>hcraft Cinex lamps. Century's transistorized
sound system, Ashcraft rectifiers and stereophonic
surround horns.
The facade of the twin theatres. The upper wall
is faced in wide alternate stripes of black and white.
CAMERA VIEWS
OF THE PIGGY-
BACK CORONET
/ estibule u ith steps to the Coro-
net's lobby and gallery.
Coronet lobby with its escalator leading to the auditorium, features the
Proscenium Gallery where paintings and sculptures are exhibited and sold.
The Coronet's auditorium, like its tivin, the Baronet, is a stadium-type
theatre. Walls are blue perforated aluminum. The curtain is gold and blue.
International Projectionist July, 1963
Rear view of the auditorium, show-
ing the projection room.
13
New York's Festival Theatre So Luxurious
It Includes Private Art Gallery
Showman Joseph E. Levine cele-
brated "New York is a Summer Festi-
val" by opening his new Festival
Theatre. 57th St.. just west of Fifth
Ave., recently with Federico Fellini's
"S1/)" as the inaugural attraction.
Built in the former location of the
Milgrim store, the Festival Theatre
will hold just under 600 seats. De-
scribed as the most luxurious of inti-
PROJECTIONISTS
PREFER
ETHYLOID
Film Cement- For
BEST RESULTS
Available from
Supply dealers
FISHER MFG. CO.
1185 Mr. Read Blvd.
Rochester, N.Y.
ASHCRAFT
equipment
Available from
leading theatre supply
dealers
North American Philips Co., Inc.
Motion Picture Equipment Division
100 E. 42nd St., New York 17, N.Y.
mate cinemas in New York, it boasts
the largest, most elaborate lounge
space of any East Side theatre. In
addition to an upstairs gallery lounge
with windows facing 57th Street, the
theatre will have a downstairs coffee
lounge running the entire length of
the building.
Designer of the Festival Theatre is
Simon B. Zelnik, New York architect.
A unique marquee fronts the new
cinema. Blending in with the rich-
flowing architecture of the existing
building will be a flower-box arrange-
ment, projecting from the building
SUPPLIERS FOR
FESTIVAL THEATRE
Architect Simon B. Zelnik
Steel Work . . Irvington Steel & Iron
Consulting Engineer .... Strobel &
Rongved
General Contractor lenkin Con-
tracting Co.
Electrical Charles Hyman
Heating & Air Cond. . . Weathermatic
Corp.
Acoustical Work . . Jacobson & Co.
Inc.
Seating Joe Hornstein Inc.
Sign .... Interstate Neon Sign Co.
Terrazzo V. Foscato, Inc.
Plumbing . . L. Parhman & Sons. Inc.
Store Front E. K. Anderton
Decorator . . Mrs. Ellen McCluskey
above the lobby entrance, made of
a new material. Duranodic aluminum,
providing fixed. weather-proofed
metallic colors. The facade will also
be of colored Duranodic aluminum.
Byzantine glass mosaics and etched
terrazzo will grace the lobbv area,
inside. The two lounges, with decor
designed to enhance the living-room
comfort of patrons, will be an inte-
grated part of the theatre's architec-
ture. Featured in the downstairs
lounge will be two separate areas,
decorated respectively in French and
Italian motifs. Special areas in the
lounges will be devoted to coffee bars,
picture galleries, and seating.
The Festival Theatre will be located
Projection equipment in booth of
Festival Theatre.
at the apex of the exclusive depart-
ment-store, office-building and resi-
dential area uptown.
According to Zelnik. a veritable
engineering "miracle" was required
to transform the store space into a
cinema. Six supporting columns were
removed from the structure and re-
placed with transverse beams, without
occasioning any settlement in the
stories above.
Paintings covering a span of five
centuries and representing a value in
excess of $100,000 are on display in
the lounge.
Front of Festival Theatre, 6 West
57th St., New York City.
BRIGHTER LIGHT
LONGER BURNING
SHARPER PICTURE
Free Test Samples
PHV**w
Tn»»'iiii»»
wuUtteWk(2antf>t 1 1 1 i — precaution
is to prevent cracking ami explosive destruction of the
bulb from the chilling effects of drafts. For tin- same
reason, the ventilating system must be arranged so that
down-drafts cannot force their \\a\ into the lamphouse.
The ventilating requirements of the xenon lamp are
modest, inasmuch as the xenon bulb, unlike a carbon arc.
generates no gases to be expelled.
Once a xenon lamp has been connected to a suitable
rectifier, power-suppl) problem- seldom arise. There are
no electro-mechanical feed mechanisms to go wrong.
The quench spark gap of the high-voltage igniter unit maj
need adjustment or replacement after long periods of use,
but there are no moving parts in the xenon lamp aside
from the expected mirror-adjusting controls. No lubri-
cation of the lamp is needed. There are no carbon-core
ashes to soil the lamphouse. hence cleaning is an excep-
tional eas) chore. The large main reflector and the
small auxiliary mirror ordinarily require no cleaning
beyond a fortnightly wiping with a clean, soft, dry cloth.
Adjustment of Mirrors
Detailed instructions for "lining up" 900-, 160U-. and
| 2500-watt xenon lamps are given in the Strong operating
manuals for these lamps. Initial alignment of the xenon
lamphouse is best accomplished with the aid of a special
aligning tool supplied by the lamp manufacturer.
The three control knobs for the main reflector are
| located on the operating side of the lamphouse at the
' rear: the three for the auxiliary reflector are at the
front of the lamphouse. So critical is the adjustment of
the auxiliary mirror that its controls should be locked in
place once the adjustment has been made.
The large main reflector is adjusted first. To prevent
the appearance of confusing patterns of light on the
screen, the optical effect of the auxiliary mirror is
eliminated bv mo\ ing this smaller mirror toward the front
of the lamphouse.
The xenon bulb is switched on and the light centered
on the screen with the main-mirror horizontal and vertical
adjusting knobs, then focused with the focus knob to
obtain the smallest "V" pattern of light. After this is
done, the auxiliary mirror is returned to its normal posi-
tion, and its optical adjustment effected bv means of the
horizontal, vertical, and focus knobs for this mirror, as
described below.
Optical adjustment of the auxiliar) mirror is very
critical and must be performed with great care. The
horizontal and vertical controls are adjusted until the
bright "cathode spots" are aligned vertically, one above
the other, on the imager screen in the side door of the
lamphouse. The two bright spots should be about 1/8
inch apart on this little screen, and care should be taken
not to focus the bright spot of the cathode directly upon
the tip of the anode. To do so will overheat the anode and
harm the xenon bulb.
This done, further adjustments ol the auxiliary mirror
are made bv observing the projected light on the theatre
screen. After giving a finishing touch to the auxiliary-
mirror horizontal adjustment, if nccessarv. the auxiliary-
mirror focus knob is adjusted to obtain the brightest pal-
tern of light on the screen. This will be superimposed
upon the "V" pattern formed bv the main reflector. To
"disentangle" the two patterns, it is advisable to run
through the focal position of the auxiliar) mirror a lew
limes before a fine adjustment is made.
\lter these patterns of light from the main and auxili-
ary reflectors are obtained, the last step in the adjust-
ment of the reflectors is to turn the auxiliary-reflector
focus knob one-half turn to the right, and the main-
reflector focus knob two turns to the right — that is to say.
in a clockwise direction. This will then provide a screen
light of utmost uniformity, and all is in readiness for the
projection of pictures.
Pushbutton Starting
\etual operation of the xenon lamp is simplicitv itself.
There are two switches directlv beneath the three main-
reflector adjusting knobs. One is the rectifier-relay ON —
OKI switch for the power. This is turned on first. Then
the igniter button is pressed [or not more than half a
second. There will be a distinct buzzing sound, and the
xenon bulb will light up. What could be easier?
Because of the slow evaporation of tungsten from the
hot electrodes, the quartz envelope of a xenon bulb gradu-
ally darkens — just the same as with an ordinary tungsten-
filament mazda lamp. To maintain a constant high light
output, therefore, the current is graduallv increased by
small increments at the rectifier. When the current has
been boosted to a stated maximal value, after many
months or even a year or so of service, the bulb must be
replaced.
Too high a current destroys the tip of the tungsten
cathode and dangerously increases the pressure of the gas
inside the bulb. Xenon lamp equipments manufactured
by the Strong Electric Corp. have a running-time meter
which shows the time in hours that the xenon bulb has
been burned. The running-time meter is conveniently
located on the back of the lamphouse beside an ammeter
which shows at what current the lamp is operating.
Imbalance in the light outputs of xenon-equipped pro-
jectors is corrected by increasing the current of the dim-
mer lamp, decreasing the current of the brighter lamp,
or by a combination of both measures.
All things considered, the xenon lamp is a welcome
boon to projection in theatres which formerly found the
smaller simplified high-intensity carbon arcs adequate for
satisfactory screen brightness. It is designed to produce
an ideal light for motion-picture projection and to
provide long periods of service with an absolute minimum
of attention. iP
International Projectionist July, 1963
17
Another Wide-Screen
Process - - Now It's
"Dimension 750"
Todd-AO and Dimension 150 have
combined forces to furnish motion
picture producers with all of the
finest features of wide screen motion
picture processes according to an
announcement from George P.
Skouras, president of the Todd-AO
Corp. and Dr. R. Vetter and Profes-
sor Carl Williams, developers of the
new Dimension 150 process.
Dimension 150 was developed by
Dr. Vetter and Professor Williams,
members of the faculty of the Uni-
versity of California at Los Angeles
as a process that requires the use
of only one camera and can be pro-
jected with a single projector on all
screens, including the most deeply
curved screen, without distortion.
The Dimension 150 system in-
cludes the use of numerous wide
angle lens up to a 150-degree bugeye
lens which will give producers the
widest camera range ever developed
in the history of motion picture-
making.
In addition, pictures produced in
Todd-AO or Dimension 150 will of-
fer to producers and exhibitors the
facility and flexibility of presenta-
tion without incurring conversion
costs in theatres currently equipped
for 70 mm. projection on deeply
curved screens used in several exist-
ing processes.
Dr. Vetter and Professor Williams,
who specialize in audio-visual educa-
tion at UCLA, have concluded the
development of Dimension 150 and
have patents pending on the process.
Arrangements are being made to
present the process and demonstrate
its possibilities, flexibility and eco-
nomics to members of the motion
picture industry within the near
future.
Negotiations have been concluded
with Louis de Rochemont for the
production of three films in Dimen-
sion 150, one of which will be "All
The World's A Stage," a large-scale
spectacle-drama based on the real life
of a famous Broadway-Hollywood
personality. iP
New Strong Rectifier
Operates 2 Arc Lamps
From Single Supply
One of the first installations of the
new Strong Bi-Powr silicon stack
rectifier is that of the Astro Theatre.
Omaha, Nebr., shown with Richard
Smith operating. This new type recti
fier was developed for the operation
of two projection arc lamps off oi
a single power supply. It employs two
silicon stack assemblies, one for each
output. The life expectancy of the
equipment is greatly lengthened due
to the fact that there is "no aging."
Hence there can be no unbalance in
the units and no flicker on the screen
caused by unbalance in power supply.
The Bi-Powr is designed for opera-
tion on 220V 50/60 cycle three phase
AC and is available in four ratings:
/6i
vttL
T>)
INTERNATIONAL PROJECTIONIST
1 Post Office Box 6174
VWW^MK Jf
Minneapolis 24, Minnesota
Enter my
□ 1 year (12) issues — $3.00
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ie
Add
ress
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60-85/ 60-85 ampere/ 35-45 volts:
75-105/ 75-105 ampere/ 48-61 volts;
90-135/ 90-135 ampere/ 56-70 volts;
and 120-160 120-160 ampere/ 58-75
volts.
A novel "Lo-Strike" feature associ-
ated with each output on the 90-135
and 120-160 ampere models protects
the silicon stacks from overload and
prevents the destruction of the carbon
crater upon striking the arc. An ex-
clusive automatic reset permits im-
mediate restriking in the event that
the arc is not established on first
strike.
Literature may be obtained by
addressing the Strong Electric Corp.,
31 City Park Ave., Toledo 1, Ohio.
iP
Christie Electric
Features New Xenon
Power Supplies
Christie Electric Corp. is featuring
a new line of xenon arc lamp power
supplies, said to be ideally suited for
such applications as solar simulators,
data display systems, flight simulators
and star tracking systems.
These extremely versatile units may
be used equally well with xenon or
mercury xenon lamps (inset) and fea-
ture automatic current regulation and
18
extremely low current ripple. Each
unit is designed to work with two or
more lamp sizes. Output character-
istic may be adjusted for operation of
all lamps.
Further information may be obtain-
ed by writing Christie Electric Corp..
3410 W. 67th St., Los Angeles 43, |
Calif. iP
International Projectionist July, 1963
» AUTHORITATIVE
» COMPREHENSIVE
»
PRACTICAL
Acclaimed by leading technicians in
the industry as the most comprehen-
sive and down-to-earth handbook pub-
lished to date on the subject of motion
picture projection. Ideally suited for
study and reference by your opera-
tors.
ROBERT A. MITCHELL'S
MANUAL OF PRACTICAL PROJECTION
HANDY 5'/2" X S'V SIZE
450 PAGES
ILLU STRATED
CROSS INDEXED FOR EASY REFERENCE
* Here is one of the most help-
ful works ever published for
the motion picture projection-
ist. A handsomely bound and
profusely illustrated compila-
tion of the BEST of the Robert
A. Mitchell articles that have
appeared in "International
Pro jectionis t," revised,
brought up to date.
* The author covers clearly
and thoroughly every aspect of
motion picture projection, pre-
senting his material in easily
understood language — not too
technical, yet technically ac-
curate. The Manual is divided
in 8 sections and contains 30
chapters — a valuable refer-
ence work no progressive pro-
jectionist should be without.
!
SECTION HEADINGS
(1) Film: (2) The Projector: (3) Projection-Optics, Screens; (4) The Arc Lamp;
(5) General Projection Practice; (6) Motors, Generators, and Rectifiers; (7)
Sound Reproduction Systems; (8) Projection of Color and 3-D Films, Formulas.
ORDER YOUR COPY TODAY * USE THIS HANDY FORM
INTERNATIONAL PROJECTIONIST
Post Office Box 61 74
Minneapolis 24, Minnesota
Gentlemen: please send me copy (copies) of ROBERT A. MITCHELL'S MANUAL OF
PRACTICAL PROJECTION. Enclosed is my check (or money-order) for $
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*r
A/oreft
presenting the NEW /VOretCOAA U UNIVERSAL 70/35
Leave it to famed Norelco engineering to take a projector
that has just received an Academy Award for design and en-
gineering . . . and improve it!
That's right. ..the new Norelco AAH 70/35 projector has 18
major technical improvements including: new dual-split maga-
zine shafts that eliminate need for special 35mm reels with
70mm flanges; new intermittent assembly; new single motor
dual drive; new adjustable lamphouse bracket for moving
lamp without realignment; new threading guards; new oil
vapor leak protection; new reduced torque motor; and others.
Most of today's top boxoffice attractions are 70mm releases.
Even more are coming. By equipping with Norelco AAH
70/35's you'll be able to show them in all their spectacular
brilliance and cash in on their tremendous drawing power.
What's more, in a quick 4-minute changeover, you also have
the most modern, rugged and trouble-free 35mm mechanism!
No matter how you look at it... for today and tomorrow,
Norelco AA n 70/35 projectors are your wisest investment.
Get all the facts from your theatre supply dealer or write
Norelco today.
The Academy of Motion Picture Arts and Sciences presented this
award for outstanding achievement to the North American Philips
Company for the design and engineering of the Norelco Universal
70/35mm motion picture projector.
®REG. UNITED STATES PATENT OFFICE BY NORTH AMERICAN PHILIPS COMPANY, INC. NORELCO IS KNOWN AS PHILIPS IN CANADA. 100 E. 42nd Street, New York, N.Y. • Phone: 212-OX 7-3600
I
INTERNATIONAL
/I
J
\
During the National Carbon tour, the Star-Lite Drive-In in Fostoria, Ohio, owned by
Virgil P. Fau, was visited. Left to right in the booth are Phil H. Freeman, sales manager
for arc carbon products, National Carbon Co. division of Union Carbide Corp.; E. A. Bowen,
local sales manager for the division; Carl E. Short, local 267 IATSE, Tiffin, Ohio, and
J. W. (Bill) Cosby, marketing manager for arc carbon products. Story begins on page 8.
Library of Congress
Order Division (o368X)
Washington 25, D.C.
AUGUST
VOLUME 38
40c A COPY
1963
NUMBER 8
$3.00 A YEAR
Investment Opportunity
The hand holding the hammer will someday make
products for you.
Long years of training will have to go into making
those chubby fingers productive. Much care, much love,
much planning and money.
But no matter how lean and hard and skillful they
become, it will signify little if the fruits of their skill
are produced in anything but a free society.
You have an investment in those hands. To protect
your investment, you can join with other leading Amer-
ican businessmen to promote the Treasury's Payroll
Savings Plan for United States Savings Bonds. The
Treasury Department's Plan works for soundness in
our economy, strength in our defenses, and thriftiness
and self-reliance in our thinking.
When you bring the Payroll Savings Plan into your
plant — when you encourage your employees to enroll
— you are investing in the hands of tomorrow's tool
makers and tool users. You are investing in America's
next generation of machine operators, mechanics, metal
workers — in all of America's skilled labor force. You
are investing in America's future. In freedom itself.
Don't pass this investment opportunity by. Call your
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in your plant... promote the PAYROLL SAVINGS PLAN for U.S. SAVINGS BONDS f||
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The U. S. Government does not pay for this advertisement. The Treasury Department thanks, for their patriotism, The Advertising Council and this magazine.
INTERNATIONAL PROJECTIONIST
INTERNATIONAL
PROJECTIONIST
Including a special Audio-Visual section relat-
ing to the operation and maintenance of A-V
equipment in the educational and industrial
fields.
Volume 38 August 1963
No. 8
FRANK W. COOLEY, JR.
Editor and Publisher
RAY GALLO
Executive Publisher
AL BLOOM
Managing Editor
TOM KENNEDY
Equipment Editor
RAY GALLO ASSOCIATES
National Advertising Representatives
545 Fifth Avenue, New York 17, N. Y.
Telephone Murrayhill 7-7746
(Area Code 212)
IN THIS ISSUE
Film Shrinkage, Frame Registration 4
By ROBERT A. MITCHELL
National Carbon Tour 8
History of the Carbon 8
Screen Design Developments 17
News Notes — Technical Hints — Miscellaneous Notes
INTERNATIONAL PROJECTIONIST, published monthly by the
International Projectionist Publishing Co. division of The
Northern Publishing Co., Post Office Box 6174, Minneapo'is
24, Minnesota. Editorial offices, 1645 Hennepin Avenue,
Minneapolis 3, Minn. Subscription Representatives: AUS-
TRALIA — McGills, 183 Elizabeth St., Melbourne; NEW
ZEALAND — Wixon's, Ltd., 64 Courtnay Place, Wellington;
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signed articles, or for unsolicited articles. Entire contents
copyrighted 1963 by INTERNATIONAL PROJECTIONIST
PUBLISHING CO.
MONTHLY CHAT
WHY NOT TRY
BOOTH SHOWMANSHIP
The low dollar volume at the boxoffice in movie the-
atres all around the country is the prime worry of the
film industr) .
The exhibitor says "give 'em a big picture and the
public will bin tickets." And that checks out when the
movie attraction catches the fancy of the mass public
in this country and abroad, for the "big picture" grosses
more millions today than ever in the "past.
But the men with investments in theatre properties
might well ask themselves "what are we doing about the
situation of complete dependence on the people who make
films?"
IP would like to suggest that the theatre owner
would give a try at Booth Showmanship. Since its pretty
plain that there are millions of people who attend the
movies infrequent!) (for instance when the "big picture"
comes along) and certainl) not for the reason that
they don't have the admission price — according to Wash-
ington the income is at an all-time high.
Booth Showmanship is a good presentation of all pic-
tures the theatre presents to the patrons. A picture that
is bright from margin to margin of the bigger screens.
The booth craftsmen's skill is at an all-time high and
is capable of Booth Showmanship if onl\ the theatre
owner would give him a chance with the modern tools
ol his craft.
Available are high standard projectors, sound sys-
tems, light sources, power converters and necessary booth
accessories
W ilh man) theatres in deplorable out-moded and
well-worn projection equipment many industry men
place the blame mi the low-dollar \olume at disappoint-
ing grosses of good pictures, not necessarily with the
automatic drawing-power, right at the theatre whose
projection equipment is not up to modern standard and
whose unattractive surroundings don't invite the public
to the patrons of the house.
To meet present-day standards all pictures, even the
new -reel presented at movie theatres should be bright,
with good distribution, and color rendition.
Mam a theatre has too large screens for the light
source being used. This stems from the neglect when the
theatre put in a large screen without stepping up the
light source. There are cases when screen area was more
than doubled using existing lamps. Naturally, the screen
illumination was reduced radically, the projectionists, the
patrons of the house, noted the dimness when they saw
a black and white film especialh. when the low-key and
night scenes, with color film dim at the margins.
The equipment dealer is the best source for the the-
atre owner to get good advice to upgrading, at minimum
cost, his booth equipment.
According to informed equipment men. more than
M'' of the arc lamps in theatres in this country are
more than 20 years old. And the projector manufactur-
ers say the same thing holds for projectors.
During the last decade a lot of improvements in
techniques have gone into the motion picture, particu-
larly by the equipment manufacturers and the film
makers.
For all of the know-how of the production men, with
their costly pictures, not every film attraction turns
(Please turn to page 18)
International Projectionist August, 7963
Volume 38
August, 1963
Number 8
FILM SHRINKAGE AND FRAME
REGISTRATION
By ROBERT A. MITCHELL
Improvement in the rocksteadiness of theatre motion
pictures during the past few decades is due in great
measure to improvements in the aging characteristics of
the film, itself.
Other refinements in the art which have exerted a
decidedly beneficial effect upon the quality of professional
projection include more accurate camera and projector
intermittents, improvements in film processing and print-
ing, the use of film stock perforated by the manufacturer
instead of by the studios and laboratories, and a better
understanding of optimum storage conditions for all the
different types of film stock in use.
As far as theatre-release positive film stock is con-
cerned, the substitution of high-acetyl acetate safety film
for the relatively unstable and dangerous nitrate film
formerly used has been a significant factor because of
the relatively low and comparatively uniform shrinkage
of triacetate base.
The film shrinkage problem still exists, of course, be-
cause all known cellulose-ester plastic materials shrink
to some extent with time and upon exposure to varying
conditions of heat and moisture. The film processer wor-
ries about the difficulties resulting from the stretching
and shrinking of film in his developing and drying ma-
chines. The special-effects man is concerned about the
rocksteady superposition of mask films. The color lab
technician is likewise concerned with the registration of
his three color separations, and in black-and-white work
with the bad effects resulting from negative shrinkage.
And the projectionist has anxieties of his own: variations
in the normal shrinkage of the positive print films he
projects will cause unsteadiness of the pictures on the
screen.
Film is Perforated Accurately
Assuming that all camera, printer, and projector units
are correctly designed and maintained in top-notch op-
erating condition, the accuracy with which the succeed-
ing frames of a film are registered, one after another,
is determined by the accuracy of the perforations punched
in the margins of the film. Shrinkage of the film stock
alters the "pitch," and if the shrinkage is irregular,
the accuracy, of the perforations. When film shrinkage
disturbs the accuracy of frame registration in printing
or projection, the bad effects result directly from ensu-
ing inaccuracies in the pitch of the perforations — the
distance from the edge of one perforation to the corres-
ponding edge of the succeeding one.
Film is perforated accurately by the manufacturer,
the errors in pitch, if any, being well below the 0.00015-
inch tolerance specified by the American standards for
perforations in 35-mm motion-picture film stock. This
statement probably applies to all the leading brands of
film, European as well as American.
It would not be an easy job to discover any inac-
curacies in the perforating job done by the film manu-
facturer, and would be impossible if the film samples
had been processed, used, or stored for any length of
time. Check-tests on perforation accuracy must be made
on unprocessed raw stock immediately after it is per-
forated, and under the same conditions of temperature
and humidity maintained in the perforating rooms. Such
check-tests are made at frequent intervals by the film
International Projectionist August, 1963
manufacturer to insure a consistently high quality of
product.
All film, even triacetate, swells in processing solu-
tions and shrinks upon drying. More important, film
normally swells when the moisture-content of the air
is high, shrinks when it is low. and keeps on shrinking
w ith the passage of time. Old or processed film can pro-
\ ii U» no clues whatever as to the accuracy of the per-
forating process.
Nitrate Film Shrank Severely
Certain samples of nitrate film of very ancient vintage
reveal apparent shrinkages in excess of 1', in length, but
we cannot he sure that the films in question really shrank
so much — we do not know what the original perforation
pitch may have been. But we do know that nitrate film
shrank much more badlv than modern triacetate stock,
and in a more irregular manner.
The irregularity of shrinkage is easily discovered
l>\ projection with a mechanism specially modified to
increase the length of film between the intermittent
sprocket and the projector aperture, inasmuch as shrink-
age registration errors add up algebraically, sometimes
cancelling one another and sometimes stacking.
\- all old-timers in the projection craft remember.
nitrate film had undergone considerable improvement
since the earliest days of the art. Although triacetate film
is better in main ways, nitrate was prettv good stuff at
the time acetate supplanted it. After five years of stor-
age under good conditions of temperature and relative
humidit) I 7!!: F and (>()', Rlli. \ essed positives
on the best nitrate stock shrank longitudinal]} about
0.0',. Ordinarv projection use with repeated shipping
and storage intervals under diverse conditions un-
doubted!) accelerated the shrinkage of nitrate and mav
have aggravated irregularities in the rate of shrinkage,
but unless very old or much abused in use. nitrate theatre-
release prints gave fairlv pood screen results.
It is doubtful, however, that the shrinkage character-
istics of nitrate release stock would permit this type of
film to be used with satisfactory results under modern
conditions of high-intensitv widescreen projection, or in
large drive-in theatres. For these conditions triacetate
stock is preferable.
Normal and Low-Shrinkage Acetate
Triacetate release-positive film, processed and stored
at 7!! F and Oil', KH. shrinks onlv 0.1', in a 5-year
period. Continued storage due-- not appear to result in
appreciable additional shrinkage.
Triacetate negative stock shrinks less than 0.2',
after 3 years of storage at 78° and 60', RH: and
no further shrinkage normallv occurs. The sharpness
of modern color-film prints is largely due to the low
shrinkage of triacetate negative, for large and irregu-
lar shrinkages in the separation masters, duplicate nega-
tives, imbibition positives, etc. might result in mis-
registrations which would blur the images.
Special low-shrink base may not be quite tough
enough to withstand the wear and tear and intense
heating of the projection process, but it is now nearly
always used for duplicating films as well as for camera
negative stock to insure rocksteady photographic images
in the final prints.
Since there are 16 frames per linear foot of stand-
ard 35-mm film, the frame pulldown distance amounts
to three-quarters of an inch. And with 4 sprocket holes
per frame, the standard perforation pitch must be one-
quarter of three-quarters of an inch, namely. 0.1873"
between corresponding edges of two adjacent perfora-
tions. In actual practice, however, a slightly smaller
perforation pitch has been agreed upon and universally
used.
International Projectionist August, 1963
B&H
DH
Fig. I — Shapes of film perforations in present-day use.
The B & II < Bell & Howell) perforation, oldest of the
jour, is the preferred type of perf. for most negative film.
It was also universally used for positive stock until the
mid-1920's. and continued to be used for Technicolor
prints until about 1950.
The KS I Kodak standard) rectangular perforation
leas devised by J. C. Jones of Eastman Kodak in 1923,
and put into use almost at once for release-print stock.
The improved Hearing qualities of the KS perf. is due to
the roundei/ corners; and the increased height (from
0.073 inch to 0.078 inch) eliminated the mechanical in-
terference experienced with B & II perfs. in one make
oj projector.
The 1)11 ( Dubray-Houell ) perforation was proposed
in the eurh I930's to provide a long-life perforation
which could be used in precision step-printers designed
for B & H perfs. The DH perf. was adopted for color
prints in 1 '>!(>. and resembles the KS perf. except for a
height corresponding to that of the old B & H perf. The
CS (CinemaScope) perforation is a reduced-width version
oj the Dll per). The use of CS-perforated prints requires
the narrow-tooth sprockets now used almost everywhere.
This diagram and notes on perforations suggested by
"Pin Registration" by A. C. Robertson, JOURNAL OF
THE SMPTE, Feb. 1963.
"Long" and "Short" Pitches
The regular ■"long*' pitch for the perforations
punched in all positive stock and some negative and
intermediate-film stocks is 0.1870". A special "short"
pitch of 0.1866" is also available for negative films.
Short-pitch negative gives optimum results in con-
tinuous-type printers having curved exposure gates to
compensate for the average amount of negative shrink-
age encountered in the days of nitrate film.
Although the maximum amount of shrinkage en-
countered in triacetate theatre-release prints is not very
great, certainly not much greater than about 0.4%,
projectionists have sometimes wondered whether this
normal shrinkage is deleterious to the quality of the
picture on the screen. The answer is definite: it is not
harmful in any way and cannot be perceived on the
screen so long as the amount of shrinkage, whatever it
may be, is uniform. Neither will there be any mechani-
cal difficulties in the running of the film. The 0.943" — ■
and 0.945" — diameter intermittent sprockets in general
FIG. 2— Evolution of the B&H perf.
Old~