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 #:
000705
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 699 the overflow gauges rather than through the hinged covers in the bearings. This method will prevent waste and annoyance from overflowing of the oil reservoirs. Pour in enough oil to show in the gauges, the thin oil furnished for the moving picture machine, sewing machine oil and similar light oils are not heavy enough. It is better to purchase a can of "light dynamo oil" and keep it for the compensarc. See that the armature turns freely in the bearings and that the machine is level. Make sure that all the connections are tight and correspond with the diagram of connections for the outfit supplied. When starting up see that the armature starts to rotate in the direction marked on the coupling. The direction of rotation of two-phase motors can be reversed by interchanging two line leads of the same phase. In the case of single and three-phase motors it is only necessary to interchange any two line leads of the motor. Immediately after starting, see that the oil rings revolve and carry the oil up to the shaft. Always keep the oil at the proper level in the well, that is, nearly to the lip of the overflow gauge. STARTING THE COMPENSARC In starting up the A. C. to D. C. Compensarc, have the switches at the lamps open. If a singlephase outfit, close the main switch and move the starting arm on the starting box from the "off" position to the split segment which will introduce the necessary starting coils to cause the armature