Handbook for motion picture and stereopticon operators (1908)

Record Details:

Title:
Handbook for motion picture and stereopticon operators
Date:
1908
Publisher:
Washington, D.C. : The Knega Company, Inc.
Volume:
Handbook for motion picture and stereopticon operators
Leaf #:
00065
Language:
English
Subjects:
Motion Pictures, Motion Picture Technology
Collection:
Books
Format:
Books
Contributor:
Niles Essanay Silent Film Museum
Sponsor:
Media History Digital Library
Coordinator:
Media History Digital Library
Description:
Date Added:
November 16, 2023
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Operator's Handbook 59 will accommodate lenses of different foci. The rewinding device in the magazine should be one which can be trusted, and, if a belt is used, it should be so made and fitted that it will not come off accidentally. The machine should be turned by hand so as to require the attention of the operator. When he stops turning, the film stops, whereas, in case of a fire, a motor would continue to feed the inflammable film out of the fire-proof magazines and into the flame after the operator had fled. Cracked Condensers. Another important consideration in a projecting machine is the ability to change the condensing lenses quickly, especially the one close to the light, and substitute a new one for a cracked one. No suitable devices have ever yet been found which absolutely guarantee that the lens next to the arc will not break, and obviously, this may happen soon after starting the exhibition; and in this event, if the lenses cannot be quickly changed, a whole two-hour performance must be spoiled by a cracked lens. It has been found that to have the back lens supported between asbestos-lined rings to prevent the glass coming into contact with metal materially helps to prevent breaking. Have extra lenses at hand and ready to slip in quickly.