Servicing projection equipment (1932)

Record Details:

Title:
Servicing projection equipment
Date:
1932
Publisher:
New York : Mancall Publishing Corp.
Volume:
Servicing projection equipment
Leaf #:
000149
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 15, 2024
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PROJECTOR 133 14, Baird Speed Control Operates Poorly (a) — In this case, the friction wheel is either too tight against the disc or it is too loose. Adjust it to meet the existing condition. (b) — The pulley belt may be slipping. Examine it and tighten or apply non-slip dressing. 15, Intermittent Wears Excessively ( a ) — This is often due to the use of a graphite lubricant, of cheap, dirty, and poor oils, and of oils which are either too light or too heavy. Failure to change the oil often enough will also cause this. (b) — Friction is caused by setting up the mechanism too tightly, for the mechanism should work easily but without much play. 16, Lower Loop Constantly Lost as Splices Come Through (a) — Dirty sprockets will cause this. Clean them and remove all that have worn teeth. (b) — One side of the sprocket teeth is more worn than the other, therefore it is necessary to replace the sprocket. (c) — Uneven sprocket alignment will also cause this. Correct the alignment. (d) — Bad film splices are a constant source of this trouble.