Richardson's handbook of projection (1930)

Record Details:

Title:
Richardson's handbook of projection
Date:
1930
Publisher:
New York : Chalmers Publishing Company
Volume:
Richardson's handbook of projection
Leaf #:
000141
Language:
English
Subjects:
Motion Pictures, Motion Picture Technology
Collection:
Books
Format:
Books
Contributor:
Media History Digital Library
Sponsor:
Media History Digital Library
Coordinator:
Media History Digital Library
Description:
Date Added:
August 01, 2024
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MANAGERS AND PROJECTIONISTS L06S Figure 396. Sound Gate Compartment Western Electric Reproducer Set. This compartment is joined upon its left by the exciting lamp compartment. They have been separated for purposes of illustration because if they were kept together the page illustrations would not permit of sufficient enlargement to enable you to see the details. D is the slit in the projector mechanism base through which the film comes down from the lower sprocket of the projector mechanism. B is a guide roller. A is the sound gate assemblage containing the usual tension springs, etc. This assemblage may be pulled out sidewise in its entirety. C is the sound sprocket which moves the film past the sound aperture. It is very essential that this sprocket be kept immaculately clean. Dirt adhering to its surface will have the effect of throwing it out of round, insofar as concerns the film, and this will result in injury to the sound. G is the tension pad release — the lever by means of which the sound gate may be opened or closed. L is the slit assembly.