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 #:
000116
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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566 HANDBOOK OF PROJECTION FOR from one reel to another, or at any other time during the performance, except at its beginning and end. One machine naturally will be running idle while the arc to which it is attached is dead. The actual current consumed by this machine is approximately 350 watts. The opening of the projector table switch not only disconnects the generator from the arc, but opens the field circuit of the generator as well. There is no change over resistance loss with the twin type, _F J^X MOTOR■ GENERATOR FEET "^/aU^ Figure 181 A Cut of Platform to absorb vibration of motor generator set and prevent it from communicating to the floor and walls of the building. B is a 4" x 6" timber (two of them) of suitable length. These timbers are joined by cross pieces J, J. C, C, C and D, D is a frame to carry platform, B, J, by means of iron rods and springs. E, E and G, G. The springs should be rather long and not too stiff. Harley-Davidson motorcycle front fork springs should serve very well, or sufficiently heavy diamond shape buggy or auto springs would serve perfectly. WARNING— It is essential the platform, B, be tested with a level about once a week and kept perfectly level by means of nuts F, F. TOO MANY MEN HAVE A WISHBONE INSTEAD OF A BACKBONE.