Journal of the Society of Motion Picture Engineers (1930-1949)

Record Details:

Title:
Journal of the Society of Motion Picture Engineers
Date:
1930-1949
Publisher:
New York, N.Y. : The Society
Volume:
Journal of the Society of Motion Picture Engineers
Leaf #:
00018
Language:
English
Collection:
Technical Journals
Format:
Periodicals
Contributor:
Prelinger Library
Sponsor:
MSN
Coordinator:
Media History Digital Library
Description:
The Journal of the Society of Motion Picture Engineers (SMPE)Êdocuments the technological progress of the film industry, highlighting technical developments in production and exhibition. Of special interest are articles about special effects, theater practices, lighting, and the introduction of the 16mm format. Initially titled "Transactions of the Journal of the Society of Motion Picture Engineers."Digitized by the Prelinger Library and the Library of Congress Motion Picture, Broadcasting and Recorded Sound Division.
Date Added:
July 19, 2022
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MILITARY AMPLIFIER DESIGN 11 enough, so that they can be operated with a gloved hand. It gets a bit chilly showing pictures in the open with the thermometer hovering around freezing. The mechanical design of typical military amplifiers is much more sturdy than that of their commercial equivalent. Heavier chassis stock and reinforcements to prevent flexing are used. Generous use is made of lock washers, stop nuts, and other means of securing parts to insure their holding together under vibration. Official U. S. Marine Corps Photo FIG. 1. Truck-mounted, portable 16-mm sound motion picture projectors, such as this, are used to show training and morale films by the U. S. Marine Corps. Now, you may question the need for all this, but typical examples of the use to which military motion picture amplifiers may be put are the mounting of a projector and a small gas-driven generator on jeeps or trucks which drive around from area to area showing training and entertainment films as necessary. A typical example of a Marine Corps unit of this type is shown in Fig. 1 . The Air Forces require that portable projectors be capable of continuous transportation for periods as long as 14 hr by air. Unless equipment has been properly designed, one or two such trips will head it for the scrap heap.