F. H. Richardson's bluebook of projection (1935)

Record Details:

Title:
F. H. Richardson's bluebook of projection
Date:
1935
Publisher:
New York : Quigley Publishing Company, Inc.
Volume:
F. H. Richardson's bluebook of projection
Leaf #:
000505
Language:
English
Subjects:
Motion Pictures, Motion Picture Technology
Collection:
Books
Format:
Books
Contributor:
Media History Digital Library
Sponsor:
{"Media History Digital Library","Jeff Joseph"}
Coordinator:
Media History Digital Library
Description:
Date Added:
August 01, 2024
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COMPONENT PARTS OF A SOUND SYSTEM 487 record, whether film or disc, it requires a driving motor to move the record at precisely the proper rate of speed. (20) Gears, belts or shafts are always used to transmit the motor power. Special governors may be employed to keep the motor speed constant in spite of accidental changes in the voltage of the power line that drives it. Mechanical devices of various kinds keep the record moving smoothly under the needle and keep the film moving precisely in its proper place before the photo-cell. All these contrivances, taken together, may be said to constitute the sixth, and perhaps the most important part, of a complete sound installation.