Richardson's handbook of projection (1930)

Page scan 000257 from Richardson's handbook of projection

Record Details:

Title:
Richardson's handbook of projection
Date:
1930
Publisher:
New York : Chalmers Publishing Company
Volume:
Richardson's handbook of projection
Leaf #:
000257
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 1181 but that it is slight, it may be adjusted merely by swinging the entire reproducer arm bracket slowly backward or forward. If the effect is "late," then the arm must be swung forward; if it be "early," then swing it backward — backward as the record turns. NOTE. — This latter applies only to the earlier types of Western Electric apparatus. However, if the out-of-synchronism is out so much that it cannot be thus remedied, then it is up to the judgment of the projectionist whether to continue, or to bring the fader to zero, stop and re-set both film and record, remembering that if he continues it will be impossible to regain synchronism until the entire reel has been projected. (15) IMPORTANT.— Never attempt to stop or slow up a projector by holding your hand on the turntable with a braking effect. If you do you may and very likely will damage the apparatus. Certainly you will strain it, besides throwing the record out of synchronism with the film. The turntable will rotate several times after the current has been switched off the projector driving motor and projectionists have been known to damage the apparatus badly by applying their hand to the turntable as a brake. Don't do it! (16) The disc turntable used with Western Electric Equipment rotates 33^ times to each 90 feet of film projected — in other words, 33j^ times per minute at the normal speed of projection.