Educational film magazine; (January-December 1920)

Record Details:

Title:
Educational film magazine;
Date:
January-December 1920
Publisher:
[White Plains, N.Y.
Volume:
Educational film magazine;
Leaf #:
00035
Language:
English
Collection:
Non-Theatrical Film
Format:
Periodicals
Contributor:
Prelinger Library
Sponsor:
Internet Archive
Coordinator:
Media History Digital Library
Date Added:
July 19, 2022
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Jiitrodi ucin '3 -the neweil Projection Maclaine The Heart o/^ "the Rotary An improvement in mo- tion picture mechanism is found in the new "Rotary" presser movement, which replaces the present-day "geneva or "s!ar-and-cam" device. The "Rotary' is eo origin al in design, so simple in construction and so success- ful in operation, that com parisons are interesting and enlightening. For example, the usual "star-and-cam" has TEN wearing surfaces, in direct comparison with the TWO simple bearings of the "presser' movement. In the "Rotary" presser mechanism, the film is treated as a continuous rib- bon. Sprockets and sprock- et-holes are disregarded; the film is gently PUSHED down—picture by picture — by the CONTINUOUS ap- plication of the revolving presser to the entire width of the film. «* The Rptary Portable Projector —"The size and weight of a suitcase; the strength and quality of a professional machine " —• with exclusive, patented features that are in advance of every mechanism. Easiest to thread and operate; the projector for portable use. TorDetailed Information r/lddress Rptary Dept. Educational Films Corporation oT^Jm erica - y 2 cj - y ^ Ave. New York ff Simplicity Safety Satisfaction THERE is opportunity for live-wire representatives throughout the Un.ted States and Canada—men who can grasp a man's-size opportunity, and make the most of it. Territory is being rapidly disposed of—to men with the right qualifications. 2';