Richardson's handbook of projection (1927)

Record Details:

Title:
Richardson's handbook of projection
Date:
1927
Publisher:
New York : Chalmers Publishing Company
Volume:
Richardson's handbook of projection
Leaf #:
000256
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:
July 18, 2024
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703A HANDBOOK OF PROJECTION FOR specially graduated scales, an upper scale indicating the speed of the machanism in feet of film per minute and the lower scale showing the number of minutes per thousand feet of film corresponding to the various speeds on the upper scale. By means of these two scales the projectionist can tell at a glance the speed at which the picture is being projected as well as the time required to project one thousand feet of film at that speed. For instance, if it is desired to project one thousand feet of film in ten minutes it will be seen by looking for the figure 10 on the lower scale of the indicator that the projector will have to be run at a speed of one hundred feet per minute. In figure 251A the various parts of the speed indicator are shown as supplied for the Power's Projector. A special tool tray, A, figure 251A, having an extension, B, is attached to the projector stand immediately back of the lower fire shield and takes the place of the regular tool tray originally furnished • T.-,ri' . Figure 251A