Society of Motion Picture Engineers : incorporation and by-laws (1923)

Page scan 000394 from Society of Motion Picture Engineers : incorporation and by-laws

Record Details:

Title:
Society of Motion Picture Engineers : incorporation and by-laws
Date:
1923
Publisher:
New York : Society of Motion Picture Engineers
Volume:
Transactions of the Society of Motion Picture Engineers (1923)
Leaf #:
000394
Language:
English
Subjects:
motion pictures, Cinematography -- Periodicals
Collection:
Technical Journals
Format:
Periodicals
Contributor:
Library of Congress, MBRS, Moving Image Section
Sponsor:
Library of Congress, Motion Picture, Broadcasting and Recorded Sound Division
Coordinator:
Media History Digital Library
Description:
Preceeded by an unnumbered issue published in 1916 called: Incorporation and by-laws
Date Added:
September 12, 2024
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MOTION PICTURE FILM IN MESH WITH FILM SPROCKET Poor c ndition. Pitch of film greater than that o'' s. rocket. Fig. 5. MOTION PICTURE FILM IN MESH WITH FILM SPROCKET. Interference due to the little shrinkage. Pitch of film greater than that of sprocket. Fig. 6. percentage of shrinkage, is run on a sprocket designed for film having a rather high shrinkage. This is a bad running condition, and any stage between this and perfect mesh is not good, as it results in a forward slip or pushing forward of the film by the successive entering teeth, by an amount equal to the difference between the pitch of the film and the pitch of the sprocket as "B", Figure 5. Figure 7 shows excessive interference on back of leaving tooth at "E" and also on entering tooth at "F", due to too little shrinkage. MOTION PICTURE FILM IN MESH WITH FILM SPROCKET Excessive interference, due to too little shrinkage or too much swell. Pitch of film much greater than that of sprocket. Fig. 7. 58