Servicing projection equipment (1932)

Record Details:

Title:
Servicing projection equipment
Date:
1932
Publisher:
New York : Mancall Publishing Corp.
Volume:
Servicing projection equipment
Leaf #:
00029
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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FILM (During Projection) 13 (g) — The guide rollers may be either incorrectly set or loose. 3. Film Pulls Apart Where Old Style Friction Take-up is Used (a) — Excessive tension may be the cause in this type of take-up, for even fairly strong splices may give. Therefore, adjust the friction take-up very carefully and thus avoid much film damage and splicing trouble. 4, Film Rips and Tears While Being Projected (a) — A loose splice, the edges of which are not secure, may be catching on the sprocket idler. Be sure that all patches are tight not only in the center but the full width across. (b) — Improperly matched sprocket holes may be the cause. The film may, as a result, wrap around the sprocket teeth, jam, snarl up, and rip or split. Care in matching the sprocket holes will save much trouble, especially if the matching is perfect at both sides of the patch. (c) — Split sprocket holes are apt to catch on the sprocket idler. When inspecting the film take out all dangerous sections so that bad film docs not have to go through. (d) — The groove is worn in the fire valve casting and may be causing the film to catch on the edge. Examine and correct the cause of the trouble.