Motion picture projection : an elementary text book (1928)

Record Details:

Title:
Motion picture projection : an elementary text book
Date:
1928
Publisher:
New York : Technical Book Company
Volume:
Motion picture projection : an elementary text book
Leaf #:
000625
Language:
English
Subjects:
Motion Pictures, Motion Picture Technology
Collection:
Books
Format:
Books
Contributor:
Niles Essanay Silent Film Museum
Sponsor:
Media History Digital Library
Coordinator:
Media History Digital Library
Description:
Date Added:
September 21, 2023
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MOTION PICTURE PROJECTION 619 AUTOMATIC SHUTTER The shutter covering the aperture in gate of machine and controlled by the centrifugal movement. It is so arranged that the shutter will be held up by centrifugal force as long as the machine is in motion, but should the machine stop for any reason then the shutter falls and cuts off the light 625 73-1 Fig. 246 The Centrifugal Movement with Cover Removed from film. It is a fire prevention device. Should the automatic shutter refuse to work and same cannot be remedied by oiling, it will then be necessary to take the cover off the centrifugal movement 624 Fig. 246, then examine springs and shoes 741 Fig. 246, and see if the shoe track Y Fig. 246 is not scratched.