F. H. Richardson's bluebook of projection (1942)

Record Details:

Title:
F. H. Richardson's bluebook of projection
Date:
1942
Publisher:
New York : Quigley Publishing Company, Inc.
Volume:
F. H. Richardson's bluebook of projection
Leaf #:
000311
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:
July 11, 2024
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THE PROJECTOR 295 merely drains it out and re-fills the reservoir. The gear arrangement seen below the window includes a mechanical "fuse." If binding of the film, a poor patch or any other condition threatens to bind up the mechanism or strip any of its gears, a thin pin (not clearly seen in the illustration) will break, cutting off the mechanical connection of the driving motor. The projectionist locates and cures the difficulty, and replaces the mechanical fuse. (27) Fig. 133 shows the driving side of the Century projector. The horizontal shaft is the shutter shaft. The gears through which the vertical shaft drives the lower sprocket, intermittent movement and upper sprocket arc Figure 133 clearly seen. These shafts rotate on ball-bearings. The picture represents the Century single-shutter model; the double-shutter Century has very nearly the same appearance. Lubrication is largely taken care of by the fact that the ball bearings are of the self-lubricating type — that is, sealed in for life with a proper supply of lubricant which no dirt can reach to contaminate. The Intermittent Movement (28) The means by which the intermittent sprocket is made to operate with a stop-start, stop-start motion has