Servicing projection equipment (1932)

Record Details:

Title:
Servicing projection equipment
Date:
1932
Publisher:
New York : Mancall Publishing Corp.
Volume:
Servicing projection equipment
Leaf #:
00027
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) H FILM DURING PROJECTION 1. Film Pulls Apart in the Projector (a) — A weak splice made with a too narrow margin of film is sometimes the cause for this trouble. To remedy this make a wider lapover on the splice. (b) — A poor grade of cement is used and therefore does not hold as tightly as a higher grade cement. (c) — Improper, insufficient pressure is applied while the film is in the process of welding. A patch held between the fingers while setting seldom holds. It is advisable to use a standard splicing machine for all splicing jobs. (d) — Because of careless scraping the emulsion is not entirely removed and therefore the cement does not actually weld the two film surfaces properly. (e) — Failure to match the sprocket holes causes the splice to jam and, if it is weak, to pull apart.