Richardson's handbook of projection (1927)

Record Details:

Title:
Richardson's handbook of projection
Date:
1927
Publisher:
New York : Chalmers Publishing Company
Volume:
Richardson's handbook of projection
Leaf #:
000140
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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.590 HANDBOOK OF PROJECTION FOR THE FIVE POINT DIAL SWITCH, Plates 1 and 2, is used to change the connections to the reactance coil in such way as to vary the arc current to any desired value within the limits of the machine. This switch, as its name indicates, Plate 3, Figure 194. A, positive D. C. lead; B, negative D. C. lead; C, relay contact disc; D, transformer lead tags; E, rear end of bulb holder shaft in ball bearing; F, reactance lead tags; G, fibre clamping blocks for reactance coil; H, A. C. leads; I, relay magnet; J, relay contact stud; K, transformer iron; L, transformer coil; M, clamping block for transformer iron; N, mounting bolt for transformer; P, cotter pin; Q, reactance coil; R, reactance iron; S, reactance coil leads.