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Westrex Film Editer
By G. R. CRANE, FRED HAUSER and H. A. MANLEY
This paper describes a film-editing machine which employs continuous projection resulting in quiet operation. It accommodates standard-picture and photographic or magnetic sound film as well as composite sound-picture film. Differential synchronizing of sound and picture while running, automatic fast stop and simplified threading features in the film gates with finger-tip release materially increase operating efficiency.
JL HE WESTREX EDITER has been developed to provide facilities for editing 35mm motion-picture film, in a single integrated unit, for meeting the various and often conflicting requirements of the motion-picture field. The unit described in this paper is the result of extensive field surveys supplemented by consultations with many members of the film-editing profession in Hollywood. Noteworthy among the many improvements offered by this machine is the elimination of noisy operation by the use of continuous optical projection and the substitution of timing belt drives for gear-driven mechanisms.
It was generally accepted that the picture should be projected from the rear on a conveniently located screen and should be visible through a fairly wide
Presented on April 29, 1953, at the Society's Convention at Los Angeles by G. R. Crane (who read the paper), Fred Hauser and H. A. Manley, Westrex Corp., Hollywood Div., 6601 Romaine St., Hollywood 38, Calif. (This paper was received on June 5, 1953.)
viewing angle and with sufficient screen brightness to permit operation in a normally lighted room. It is felt that this has been accomplished to a very satisfactory degree. In addition, means have been provided for projecting an enlarged picture on a wall, the projection distance and resultant picture size being accommodated by the selection of a simple spectacle lens. Considerable attention has been given to simplicity and efficiency in operation and to the convenience of the operator. Threading of film has been reduced to a minimum of effort. Placing the film in the film trap automatically locks the film to the drive sprocket so that the position of the film cannot be lost inadvertently. Closing the film gate completes the operation. Removal of the film is accomplished with one sweeping motion of the hand. As the hand approaches the film, a flat lever is depressed which completely releases the film. The hand continues in the same direction and removes the film. Touching a different lever opens the film gate without releasing the film from the sprocket to permit the film to be inspec
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September 1953 Journal of the SMPTE Vol. 61