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1947-48 Theatre Catalog, 6th Edition, Page 346 (332)

1947-48 Theatre Catalog, 6th Edition
1947-48 Theatre Catalog
1947-48 Theatre Catalog, 6th Edition, Page 346
Page 346

1947-48 Theatre Catalog, 6th Edition, Page 346

The Gaumont-Kalee 2] Projection and Sound

Whole New Line of British Booth Equipment ls Offered for American Theatres, Studios


Too frequently, albeit often without realizing it, Americans assume the idea that only that which is produced in the United States is of especial signijicance and of particular value. Yet that idea stems not infrequently from ignorance rather than from blind, unreasoning bias, as is indicated by the reception given many Ojferings from the various J Arthur Rank picture-producing units.

A similar eye-opening came to the equipment business last October when, at the 62nd semi-annual convention of the Society of Motion Picture Engineers, the Gaumont-Kalee 21 projection and sound equipment was unveiled before American theatre and technical men.

So perhaps it was that what might have been Hone of these thingsll turned out to be an event of singular importance, for interest ran at an intensity not general at such events, so completely unusual was this new equipment regarded.

Although the time was short, too short for complete editorial coverage, authoritative descriptive material was obtained through the cooperation and courtesy of Edward L. Harris, general manager of Gaumont-Kalee, Ltd., in Toronto, and of Charles H. Bell, general manager of G. B.-Kalee, Ltd., in London. It is from this graciously provided material (much of it esoteric) that the following sumv mary descriptions of various items of the new equipment have been prepared.


The worlds newest projection and sound equipmentethe Gaumont-Kalee 21 -is not only modern in every sense of the word, but revolutionary in thought and principle, and boldly conceived in design, style, and coloring. This complete sound and picture projector is a new conception in motion-picture equipment which may set the standard.

Totally enclosed, the Gaumont-Kalee 21 presents a graceful, streamlined appearance, in striking contrast to any other available equipment, providing complete silence in operation with utv most fire protection, and ensuring a greater cleanliness throughout.

The new equipment is a high example of what can be achieved by the close collaboration between experts in the two fields of projection, sound and picture. Gaumont and Kalee scientists and designers have joined forces to produce an equipment which functions as a complete unity.

The improvements incorporated in the new mechanical and optical design result in the highest attainable performance and faithfulness in picture and sound presentation, as well as that of reliability, efficiency, and simplicity in operation.

To see the new Gaumont-Kalee 21 in action is to acclaim it a veritable mas

terpiece of British motion-picture development, precision engineering, and scientific skill.

The Projector

The Gaumont-Kalee 21 is an advance in design and performance over all previous Kalee projectors, with the following items set forth as the special features of the new equipment:

The projector is designed to use the new wide-aperture Kalee coated lens and the large-diameter arc-lamp mittor.

Two rear shutters, to give the utmost light efliciency, are provided.

The mechanism is totally enclosed, for cleanliness and silence in operation, with lamps being provided for internal illumination.

All mechanical parts run in an oil bath. A mechanical pump, distributor, and filter ensure a continuous distribution of clean oil.

The intermittent movement is quickly detachable.

Pressure rollers are self-sustained in an open position. The parallel gate is detachable.

An electrically operated changeover is incorporated with the fire shutter, and both arranged for remote control. Provision has also been made for a specially designed Pyrene fire equipment arranged as an integral part of the projector. A,

The magazines will accommodate 2,000-foot reels which rotate on 3/8or 5/15-inch spindles incorporated as part of the projector design.

All parts of the equipment are readily accessible for servicing, and all wiring for both projector and are lamp is totally enclosed. l

The equipment is finished in an attractive, cellulosed color combination of beige, maroon, and silver, with the exposed parts chromium plated.

The Stand

The base portion of the stand has bolted to it the central column of pillar, and bolted to the top of the column is the bearing piece for the trunnion pin about which the rest of the assembly pivots.

The base portion of the stand and the central column are of cast iron. The rest of the stand, including the magazines and magazine doors, are of cast aluminum.

Three different lengths of center columns are made, to give three different stand heights. On level rake, the height from floor level to lens center, and consequently the height from the fioor to center of porthole, is 511/; inches with the high stand, 481/; inches with the medium stand, and 451,4 inches with the low stand.

The maximum downward rake possible is 30 degrees with the tall stand, 25 degrees with the medium stand, and

20 degrees with the low stand. An upward rake of 5 degrees is possible with all stand heights.

The Arc Lamp

The arc lamp incorporates a 16-inch diameter mirror, giving a greater light output than has heretofore been attained, and requiring less critical focusing.

Any carbon current combination, up to 80 amperes, can be accommodated.

The streamlined lamphouse has an enclosed dowser. The flush doo'rs, when opened, expose the full length of the lamphouse.

The working parts of the lamp are readily withdrawable as complete units for cleaning and adjustment.

Conveniently grouped at the back of the lamphouse, the controls include twin knobs for adjustment of the carbon alignment, a switch for the feed motor, potentiometer control of rate of speed with a tachometer showing the actual feed, micrometer adjustment for positive-negative feed ratio, and a pushbutton striker for the arc.

Interior illumination is provided, and is controlled by a door-operated switch.


A complete single-channel sound system comprises two soundheads, one voltage amplifier with volume-control panel, and one rack with power amplifier, metal panel, power supply panel, dividing network, and two exciter supply panels.


The soundhead has been designed not only to satisfy the most rigorous cinema requirements, but to meet the even more exacting needs of film studio re-recordmg.

The soundhead incorporates features such as the fluid flywheel and enlarged image optical system, but is a completely new design. Externally it is of clean and attractive line, closed on the operating side by tw0 doors with transparent Windows.

The purpose animating the design was to secure a high-grade performance which should remain utterly stable over long periods and long life due to robust construction of all parts subject to wear. From the maintenance engineers, point of View the soundhead is one which can be kept in service for 20 years without going back to the factory, and without the necessity in that period of using a file, reamer, hammer, or drift.

There are three rotating shafts in the soundhead, the one carrying the fluid flywheel and the scanning drum, and two which carry a film sprocket at one end and a gear wheel on the other. These three shafts are not carried in bearings located in the soundhead casting, but the shaft with its bearings, is Contained in a long, flanged housing of

1947-48 Theatre Catalog, 6th Edition, Page 346