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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 #:
000248
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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1172 HANDBOOK OF PROJECTION FOR ferent from "start" to A. However, the exact distance may be easily determined by laying a strip of film on the aperture plate, with one frame in position over the aperture, and counting the number of sprocket holes to bottom of aperture plate, or other locating point selected. (c) The projectionist should start his amplifier equipment as follows : (1) See to it that all starting switches are in "off" position. (2) See to it that the battery switch is ready for use as per the Electrical Research Products, Inc. (ERPI), instruction book. (3) Close A. C. supply switch. (4) Close filament switch and let filament warm up for at least five minutes. (6) Switch on plate current. (7) Close horn safety switch and make certain that relay switch in fader panel is set for disc reproduction. (8) Make sure that disc-film transfer swifch is set at "Disc." Having attended to all these matters, in their order as set down, you are now ready for disc sound reproduction in synchronism with motion pictures, in so far as concerns the amplifying equipment. However, there is much which must be done before setting up for reproduction, if perfection in results are to be insured, and unless the things we shall set forth are all done, there will be no insurance of perfect reproduction.