Motion picture handbook; a guide for managers and operators of motion picture theatres (1910)

Record Details:

Title:
Motion picture handbook; a guide for managers and operators of motion picture theatres
Date:
1910
Publisher:
New York : The Moving picture world
Volume:
Motion picture handbook; a guide for managers and operators of motion picture theatres
Leaf #:
00030
Language:
English
Collection:
Books
Format:
Books
Contributor:
University of California Libraries
Sponsor:
Internet Archive
Coordinator:
Media History Digital Library
Description:
Date Added:
July 19, 2022
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20 MOTION PICTURE HANDBOOK commonly encountered, but it comes in many forms. The "snap" switches which are enclosed in a small, round metal case and operate with a button are one form of this switch. A, Fig. 6, is arranged for link (A, Fig. lo) and B for cartridge (Fig. 9) fuses. Fig. 7, A, shows the triple pole, single throw knife switch; Fig. 7, B, the single pole, single throw knife switch, and Fig. 7, C, the double pole, double throw knife switch. Fig. 7, A, is arranged to carry cartridge fuses (Fig. 9), while Fig. 7, B and C, must have link fuses (A, Fig. 10) or plain fuse wire. Where a switch is made with two sets of contacts, as in C, Fig. 7, so that it may be thrown clear over making another contact on the other side, it is called a "double-throw" switch; otherwise it is a "single-throw." Taking A, Fig. 6, as an example: the wires attach to bind- ing posts 1-2-3-4, being intended, in this case, to be soldered into the lugs (called "Terminals") shown. These lugs are by no means necessary, however, as the wires may be attached