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 #:
000426
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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Nov., 1933] NEW DEVELOPMENTS IN GENERATORS 415 sufficient power to suit the various requirements. The plant illustrated in Fig. 1 is capable of delivering 350 amperes at 125 volts as operated under motion picture conditions, and under continuous operation will deliver 250 amperes at that voltage. The essential characteristics of the booster plant are light weight, minimum size, reliability, and quietness of operation. The plant, the interior of which is shown hi Fig. 2, is equipped with a Ford V-8 engine, capable of producing 70 hp. at 3250 rpm. This motor was selected because of FIG. 2. Interior view, 40-kw, gas-electric generator set. its compactness and the reliability that it has demonstrated for motor car use. It is connected to an electric generator which is specially designed to match the power output of the motor. This generator attains its rated voltage at 1200 rpm. Its armature shaft is flexibly connected to the engine crank -shaft. The frame of the generator is rigidly attached to the end bell of the generator so that the enginegenerator assembly may be mounted on a three-point support. The supporting points rest on suitable rubber pads to reduce the transmission of sound. The radiator and fan are mounted on the