Richardson's handbook of projection (1927)

Record Details:

Title:
Richardson's handbook of projection
Date:
1927
Publisher:
New York : Chalmers Publishing Company
Volume:
Richardson's handbook of projection
Leaf #:
000251
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 18, 2024
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MANAGERS ANL7 PROJECTIONISTS 699 INSTRUCTION NO. 4— TENSION.— It is, of course, necessary that there be sufficient tension, or friction between material R-15 and driving disc R-13, P-14, to drive the projection mechanism, but anything more than sufficient to accomplish this purpose will merely result in undue wear of the friction disc, friction material and unnecessary consumption of power in the motor. The tension or amount of friction between friction material R-15 and friction disc R-13, P-14, is regulated by thumb screw R-32, P-12. Proceed as follows: Loosen lock nut R-33, P-12, and loosen up on tension screw R-32, P-12, until friction material R-15 and disc R-32 are out of contact. Now, start your motor running and having set the controlling lever down so that the friction driving wheel is pretty well in on the friction disc, slowly tighten up on tension screw R-32, P-12, until the projection mechanism at PART L-H FIGURE 251 OIL CUP MOTOR BELT TIGHTENER MOTOR .OIL CUP 1/2"FLAT MOTOR Bf.LT Figure 250.