Motion picture projection : an elementary text book (1928)

Page scan 000465 from Motion picture projection : an elementary text book

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 #:
000465
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:
July 04, 2024
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MOTION PICTURE PROJECTION 459 each manufacturer having his own ideas on this subject, and to attempt to describe each type in a work of this kind would prove to be a hopeless task, we will however devote a little space to the handy suitcase model. THE ACME PORTABLE PROJECTOR To thread the Acme pull out the round film guard between the gate marked No. 4 and the lens, push down the three guide rollers numbered Fig. 165 The Safety Shutter (B) drops and covers the aperture plate opening, cutting off the light rays, whenever the Acme is not being operated. While the machine is being operated the Shutter is held by centrifugal force in position shown by dotted lines "A." In threading the film, the "pull-out" (D) is opened into position C, thus allowing the greatest accessibility in getting the film in place. But as soon as the film is threaded this "pull-out" slips back into place and is held there by a coil spring, preventing any of the film from ever getting in the path of the light