Handbook of projection for theatre managers and motion picture projectionists ([1922])

Page scan 000913 from Handbook of projection for theatre managers and motion picture projectionists

Record Details:

Title:
Handbook of projection for theatre managers and motion picture projectionists
Date:
[1922]
Publisher:
New York, Chalmers
Volume:
Handbook of projection for theatre managers and motion picture projectionists
Leaf #:
000913
Language:
English
Collection:
Books
Format:
Books
Contributor:
Gerstein - University of Toronto
Sponsor:
MSN
Coordinator:
Media History Digital Library
Description:
14
Date Added:
July 19, 2022
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878 HANDBOOK OF PROJECTION FOR (B) All cables, pulleys and the curtain should be examined, to make sure nothing has become fouled. After locating the trouble and repairing same, close the main line switch and start the machine to make sure everything is all right. Should the mechanical clutch slip under the load the machine is pulling, turn adjusting screw I to the right onequarter of a turn at a time until the slipping stops. CAUTION. — The adjustment of the mechanical clutch is important. Screw I must be so adjusted that the clutch will just pull the normal load the machine is called upon to handle. The clutch is a safety device and must not be tight enough to pull anything more than its normal load. If the curtain does not open and close completely, do not adjust the clutch differently, but locate the cause that has made it slip.