F. H. Richardson's bluebook of projection (1935)

Record Details:

Title:
F. H. Richardson's bluebook of projection
Date:
1935
Publisher:
New York : Quigley Publishing Company, Inc.
Volume:
F. H. Richardson's bluebook of projection
Leaf #:
000237
Language:
English
Subjects:
Motion Pictures, Motion Picture Technology
Collection:
Books
Format:
Books
Contributor:
Media History Digital Library
Sponsor:
{"Media History Digital Library","Jeff Joseph"}
Coordinator:
Media History Digital Library
Description:
Date Added:
August 01, 2024
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THE PROJFXTOR 219 total speed at this point being exactly equal to that of he film above and below sprockets A and G. (45) The intermittent movement film action is made possible by upper loop D and lower loop H, which function to absorb the stoppage of the film between the steadily moving sprockets A and G. (46) While the film is stationary at Figure 64 aperture C, loop D becomes longer and loop H shorter, and since during each cycle of. action by the intermittent sprocket exactly three-quarters of an inch of film is moved down over the aperture, exactly that length of film is fed to upper loop D by sprocket A and taken away from