Motion picture handbook; a guide for managers and operators of motion picture theatres ([c1916])

Record Details:

Title:
Motion picture handbook; a guide for managers and operators of motion picture theatres
Date:
[c1916]
Publisher:
New York City, The Moving Picture World
Volume:
Motion picture handbook; a guide for managers and operators of motion picture theatres
Leaf #:
000671
Language:
English
Collection:
Books
Format:
Books
Contributor:
University of California Libraries
Sponsor:
MSN
Coordinator:
Media History Digital Library
Description:
Date Added:
July 19, 2022
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652 MOTION PICTURE HANDBOOK In Fig. 307 we see two fire bells, one located, let us suppose, in the manager's office, and the other on the stage, or at any other suitable point. We also see an ordinary push-button at A, and a form of contact more suitable to such work at B, either of which will ring both bells. As many of these may be attached as desired, locating them at any point in the house. Attach one ffi r Figure 307. side of the button to upper wire and the other side to the battery wire, as shown. In the illustration we see four batteries connected in series. This being a fire alarm system, it is desired that the bell or buzzers ring very loudly, hence several batteries are connected in series. Employees should be made to understand that it will mean instant dismissal to ring these bells, except in case of actual necessity. The system can be arranged for any number of bells, from one to a dozen, and there can be as many push-buttons as desired. Figure 308. Fig. 308 illustrates the method of connecting a bell so that it may be rung by more than one button. By this plan as many buttons may be installed as desired, any one of which will ring the bell, provided the wire from push-button to battery wire be not connected between battery and bell. A-A-A are push-buttons. In Fig. 309 we see the method of wiring an ordinary annunciator. The plan is too plainly shown to require explanation. The buttons may, of course, be located anywhere in the building, and are ordinarily widely separated.