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 #:
000570
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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May, 1939] NEW MOTION PICTURE APPARATUS 569 manually controlled switches. This automatic switch is installed on the front wall of the projection room and is connected with the automatic shutter control FIG. 1. Automatic emergency shutter switch for theater fan and light control. operated by the melting of a fusible link so that in the event of fire the action is automatic, instantaneous, and positive. This development was primarily instigated by the Inspection Department of the Connecticut State Police, who have felt for some time that there was a defi Witmo DMMMtPM t«R6tNcr SWITCH IN rnojtcTiotiRooM W«r tnrRCrncr LI&KTJ AND Am CONOITIONINO CouiriirKTARt CONTHOU.K h«M*f«ieAl.l.V HfUDCoBTACTOUJ TMKOU4H MECH HtLD CONTACTORS ^^ ^[^l CMIRAINCY&NITCN ' — f INrROJtCTlOMRoOM *J ToSAMt SlBt Of LlNt. 2.0 • OPfNIKG COIL OR BuTTOIt. 3. C -CLOsma COIL on BUTTON I HCLOCOHTACTOI!5AI!tT», FIG. 2. One of many possible arrangements of the switching circuits. nite need and requirement for a safety device of this type. This Department spent considerable time and effort in study and experimental work on the problem, with the primary objective of producing a device that would speed up emergency