Journal of the Society of Motion Picture Engineers (1930-1949)

Record Details:

Title:
Journal of the Society of Motion Picture Engineers
Date:
1930-1949
Publisher:
New York, N.Y. : The Society
Volume:
Journal of the Society of Motion Picture Engineers
Leaf #:
000345
Language:
English
Collection:
Technical Journals
Format:
Periodicals
Contributor:
Prelinger Library
Sponsor:
MSN
Coordinator:
Media History Digital Library
Description:
The Journal of the Society of Motion Picture Engineers (SMPE)Êdocuments the technological progress of the film industry, highlighting technical developments in production and exhibition. Of special interest are articles about special effects, theater practices, lighting, and the introduction of the 16mm format. Initially titled "Transactions of the Journal of the Society of Motion Picture Engineers."Digitized by the Prelinger Library and the Library of Congress Motion Picture, Broadcasting and Recorded Sound Division.
Date Added:
July 19, 2022
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328 M. W. PALMER [J. S. M. P. E. This device consists essentially of an illuminated counter, mounted in a box on the outside of the camera, a lens, and a prism inside the camera to carry the image of the counter face to the edge of the film. The counter, lens, prism, and film all move in synchronism about the same axis, thus making it possible to put the number on while the film is moving. Fig. 1 is a diagram of the mechanism. A is the re-set counter, B is a small lamp to illuminate the face of the counter, C is a lens FIG. 2. Numbering device attached to camera. focussed on the face of the counter, and D is a prism which diverts the light rays so that the image falls on the edge of the film which is riding on the sprocket E. All these elements are revolving about the same axis, thus producing an image which is moving at the same angular velocity as the film which is receiving it. Fig. 2 shows the device attached to a motion picture camera. The, cover is removable, so that the counter can be reset to any particular reading desired. Fig. 3 shows the camera door open. The member containing the lens and the prism is screwed on to the end of the sprocket shaft and