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 #:
000695
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 689 For Obtaining Two Arcs Simultaneously. — Assuming that one arc is already in operation: Adjust that arc to about a 55 volt length; Bring the carbons of the second arc lamp together and while in that position open the switch Pig. 288 controlling that lamp, then slowly separate the carbons to about 1-16 of an inch, gradually increasing the separation as the carbons heat up until this second lamp also has a 55 volt arc. length. (Note : The Voltmeter on the panel board