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1945 Theatre Catalog, 4th Edition, Page 336 (312)

1945 Theatre Catalog, 4th Edition
1945 Theatre Catalog
1945 Theatre Catalog, 4th Edition, Page 336
Page 336

1945 Theatre Catalog, 4th Edition, Page 336

chosen will again depend on local conditions. Where a plentiful supply of clean, cool air is available, the copperoxide rectifier will give long and dependable operation. On the other hand, the rectifier tubes in a bulb-type rectifier are easy to replace when their useful life is expended.

All these factors must be taken into account when ordering projection equipment. Each unit must be carefully chosen to perform properly its own function when used with its associated equipment. Careful planning in this respect will pay dividends for many years, both in superior screen results and in economical booth operation.


During the war years, the entire manufacturing facilities of the Weber Machine Corp. were devoted 100% to the manufacture of precision war work. Once again, the entire organization has been converted back to the manufacture of projection and sound equipment.

The Weber Machine Corporation announces a complete new line of Syncrofilm projection and sound equipments, which includes a SyncroaDynamic theatre sound projector, Syncrofilm 400 sound heads, syncrofilm 60 and 20 theatre amplifiers, and a well-matched speaker system.

Syncro-Dynamic theatre projector combines in one compact unit, projection and sound. Many new features are incorporated in Syncro-Dynamic, which includes a new hinged type film gate, adjustable film shoes, and a method of cooling aperture with cooling vanes on shuts ter. All intermittent parts and sprockets are standard, and are interchangeable. The sound system which is built in the mechanism, uses a new tyype cylindrical lens system, and utilizes a new and patented dynamic filter, which has proven to be a superior method of dampening action for rotary film drum. The projector is driven by a silent gear tooth chain for positive and quiet drive.

Syncrofilm 400 sound heads represent the latest developments in sound reproduction, and are adaptable to any standard

theatre projector. Syncrofilm 400 sound Head is driven by a new type tooth and link design chain, to assure a smooth, positive action. Dual exciter lamps facilitate instantaneous change should a lamp burn out. The photo-electric cell is mounted in a shock absorbing material, within which photo cell is protected against mechanical and exterior electrical disturbances. The dynamic filter is used for exacting control of rotary film drum.

Syncrofilm theatre amplifiers are supplied in two models, with an output of 20 and 60 Watts. The latest improvements in the field of Electronics are incorporated in these amplifiers to make it an outstanding theatre amplifier. Modern in design, construction and materials.

A well matched speaker system can also be suppled in conjunction with this equipment. making possible a complete Syncrofilm Projection and Sound Installation.


In the years immediately preceding World War II considerable progress had been made in the manufacture of projector carbons. This is amplified by the development of the simplified high intensity arcs, the low wattage (1-kw.) high intensity are and the development of improved carbons which greatly increased the efficiency of the high powered high intensity arcs. In addition high intensity arcs were also made available for the projection of 16-min. film.

These developments brought high quality, high intensity projection within the reach of every theatre, large and small. The installation and operating costs were remarkably low, amounting to only a little more than 2 per cent of the total expense of theatre operation. The brilliant snow-white light of daylight quality from these high intensity arcs was ideally suited to the projection of the modern color features and greatly improved black and white projection as as well. A higher level of screen illumination was also obtained which along with the other advantages offered by these arcs made seeing easier and added great NATlONAl CARBON'S TRADE MARK

1y to the comfort of the theatre audience. This higher level of screen illumination also permitted more light for the general illumination of the theatre auditorium thereby eliminating the necessity for groping in the dark to find seats and adding to the general safety of the audience in other ways. All of this was an effective boxofiice stimulant. Regardless of the size of the theatre the patrons could be sure of a clear, natural and pleasing portrayal of the pictures on the screen. ,

This progress in projection lighting was advancing until the early part of 1942 when government requirements for copper for war purposes made it impossible to continue the productionpf carbons with the thickness of copper coating formerly supplied. Every effort was made to comply with the order to conserve this vital metal and the situation was met successfully by the introduction of the new Victory carbons with reduced thickness of copper coating. As a result of cooperation on the part of all concerned these new .Victory carbons have done remarkably well in maintaining a high standard of screen illumination. In some cases, the screen lighting was actually improved by the use of the Victory carbons without the necessity of any adjustments in the equipment. An ample supply of projector carbons has been maintained throughout this emergency, thereby allowing every theatre to operate regardless of the type of projection equipment used.

From the carbon point of view therefore, the motion-picture show has gone on without any curtailment in supplies or in the quality of the light on the screen. This represents a real contribution to the success of the motion picture industry whose product is so useful in these times as a medium of education, morale building and recreation. It is fitting also to pay tribute to the arc lamp manufacturers, distributors, theatre owners and projectionists for the excellent support they have given to this entire program. The nation's war effort was helped very materially by the large amount of copper diverted and salvaged by the motion picture industry. This eEort should continue even in the years of peace.

While it is difficult to list definitely at this time any of the new developments in projection arcs to be expected in the immediate post-war period it can be said that the possibilities for improvement can be measured to some extent by those made in the years immediately preceding the present war. Greater latitude in operation can be expected when full copper coating of carbons can be resumed. There will undoubtedly be new developments in projection lamps, are controls and optical systems which in combination with carbon developments can lead to more efficient operation, and to screen light of higher intensities than are now available. The carbon arc is an extremely versatile and efficient light source easily adapted to many conditions of operation in both small and large units. The power that can be concentrated in a single arc is limited only by the capacity of the equipment with which it is used. Carbon arcs with an intrinsic brilliancy greater than that of the sun have already been attained.



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1945 Theatre Catalog, 4th Edition, Page 336