Society of Motion Picture Engineers : incorporation and by-laws (1927)

Page scan 000283 from Society of Motion Picture Engineers : incorporation and by-laws

Record Details:

Title:
Society of Motion Picture Engineers : incorporation and by-laws
Date:
1927
Publisher:
New York : Society of Motion Picture Engineers
Volume:
Transactions of the Society of Motion Picture Engineers (1927)
Leaf #:
000283
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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Pneumatic Film Squeegee — Crahiree & Ives 273 reel axle and actuated by a foot lever will suffice. The operator must unwind the film rack, progress the squeegee along the drying reel, and control the drying reel speed simultaneously, but this can be accomplished with a little practice. Rate of Drying of the Film With the above mentioned air pressure and nozzle adjustment, the water is thoroughly removed with the film passing through the Fig. 3 machine at a speed of 2 feet per second. When running at higher speeds it is necessary to increase the air pressure, but this increases the propensity of the film to vibrate rapidly between the nozzles, thus increasing the possibility of scratching. About 2 minutes are therefore required to transfer 200 feet of film to the drying reel. While this is somewhat longer than is required for this operation without the use of an air squeegee, no later wiping is required, while the drying time is shortened because drying is welF under way when the film reaches the drying reel. With ordinary methods drying is retarded where the film passes over the reel slats because the latter were wetted during transference of the wet film from the rack.