Motion picture projection : an elementary text book (1928)

Record Details:

Title:
Motion picture projection : an elementary text book
Date:
1928
Publisher:
New York : Technical Book Company
Volume:
Motion picture projection : an elementary text book
Leaf #:
000691
Language:
English
Subjects:
Motion Pictures, Motion Picture Technology
Collection:
Books
Format:
Books
Contributor:
Niles Essanay Silent Film Museum
Sponsor:
Media History Digital Library
Coordinator:
Media History Digital Library
Description:
Date Added:
September 21, 2023
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MOTION PICTURE PROJECTION 685 line and connections to panels must be made correctly to bring polarity of the instruments and lamp carbons correct. Fuses — Fuse the A. C. motor side of these machines only. The D. C. Generator circuit does not require fuses or switches other than shown on the wiring print. The A. C. fuses at the A. C. motor starting switch must be of large enough capacity to carry the maximum load of the machine. Wiring to Lamps— Use wire of sufficient size to carry rated current of Transverter to connect from L and A on the Transverter to panelboard and lamps. No. 14 or No. 12 size wire may also be used to connect F on Transverter to the F on the Field Regulator in panel board. The Transverter is a motor generator with the motor below and the generator above, the two being built into one unit. The shaft of the generator is supported at its upper end in a radical ball bearing, its lower end taking half of a coupling, the other half of which is located at the top of the motor shaft. The shaft of the motor is supported by two radical ball bearings, top and bottom, and a ball thrust, which takes the combined weight of both rotor and armature. The coupling is so constructed as to carry a centrifugal fan which provides ventilation from above and below, discharging the air out of openings in the side of the unit. Grease cups are provided for each of the bearings, the latter being enclosed in dust-proof housings.