F. H. Richardson's bluebook of projection (1935)

Record Details:

Title:
F. H. Richardson's bluebook of projection
Date:
1935
Publisher:
New York : Quigley Publishing Company, Inc.
Volume:
F. H. Richardson's bluebook of projection
Leaf #:
000548
Language:
English
Subjects:
Motion Pictures, Motion Picture Technology
Collection:
Books
Format:
Books
Contributor:
Media History Digital Library
Sponsor:
{"Media History Digital Library","Jeff Joseph"}
Coordinator:
Media History Digital Library
Description:
Date Added:
August 01, 2024
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530 RICHARDSON'S BLUEBOOK OF PROJECTION often runs through a fader that is built as a double potentiometer and therefore serves as a volume control also. One device of that kind is diagrammed in Figure 125. (35) Figure 125 represents one of a number of essentially similar devices created to serve simultaneously as volume control and as changeover. The projectionist who takes the trouble to follow the circuits of this simple diagram should have no trouble tracing out the wiring of any of its cousins. VIEW LOOKING AT INSIDE OF BOX WITH TOP OF BOX OPEN. Figure 125 Along the left-hand side of Figure 125 are eleven terminal contacts, drawn as small rectangles. The top terminal is labelled "G" and connects to the grounded