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

Page scan 000310 from F. H. Richardson's bluebook of projection

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 #:
000310
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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292 RICHARDSON'S BLUEBOOK OF PROJECTION other end, and the circuit opens. This switch is mounted on a suitable hinge, together with a light metal vane that is placed directly in the path of the breeze from the 23.0 V SlIJuUUuJ tiLuUUU IuJLUjL tWTjWljDlfl TV ARC Fig. 741. Circuit drawing of a 3-phase, copper oxide disc rectifier. Should the blower stop for any reason the mercoid switch will act in cooperation with the magnetic switch to cut off the primary current and thus save the units. fan. With the fan inoperative, the mercoid switch is open. When the external master switch is closed and starts the fan, the pressure of the breeze acting upon the