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 #:
000267
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:
March 28, 2024
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MANAGERS AND PROJECTIONISTS 1191 then, remembering that fingers 21 and 22 press against the film opposite openings 25 and 27, all Fig. 433, it will readily be understood that the film will "give" a bit as the fault passes, which again operates to close contact points 14, Fig. 432, and stop the machine. In stopping, the armature 33, Fig. 434, is pulled down when the points close, and the other end of the rocker arm to which it is attached kicks up toggle 34, Fig. 434, mercury switch is tipped back into upright position, the motor circuit thus broken and the brakes applied to both the motor and upper reel. The action is so rapid that the defective spot which caused all this disturbance will usually be found within three or four inches of the bottom of the detector box. All that may sound a bit complicated, but it really is simple and — it works. I would say that if this machine be handled with reasonable care, it will provide a better inspection than film is ordinarily given in even the best theatres and an inspection far, far better than that ordinarily given by the projectionist.