Richardson's handbook of projection (1930)

Record Details:

Title:
Richardson's handbook of projection
Date:
1930
Publisher:
New York : Chalmers Publishing Company
Volume:
Richardson's handbook of projection
Leaf #:
000246
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:
August 01, 2024
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1170 HANDBOOK OF PROJECTION FOR The switch handle beside the figure "2" is switch J, Fig. 425; the switches shown between the figures u5" and "6" are switches A-B, etcetera, Fig. 425. In Fig. 426, 1 is the amplifying panel, access to which is had either from the top or side, doors being provided at both places. 2 is the compartment or panel containing the switch mechanism by means of which transfer is made from one amplifier to the other. 3 is the panel or compartment containing the power supply for No. 1 amplifier. Access is had to it from its side. 4 contains the power supply for amplifier No. 2. 5 contains the "B" batteries for the photo-electric cell and its amplifier. In 6 is the charger for the "A" battery, while compartment 7 contains the "A" battery for the complete system. DISC REPRODUCTION.— See pages 1171 to 1181. There is, of course, a turntable for disc record sound reproduction. It is both mechanically and electrically coupled to, or interlocked with, the motion picture projector. The mechanical locking is accomplished by means of a flexible shaft connecting the motion picture synchronous motor and a similar synchronous motor mounted within the disc turntable. Not a very satisfying setting forth of the arrangement, but all sound equipment manufacturers are tremendously busy and it is difficult to get things just the best way.