Business screen magazine (1938)

NEW DEVELOPMENTS in EQUIPMENT ♦ The new DeVry "Interpreter" features a new device which represents a major change in projector operation, applying an entirely new principle. Quality of sound has been greatly enhanced through use of the new "film stabilizer." Not onlj' is sound improved, but it also has proven invaluable in eliminating strain on film, actually making it possible to run "green" (untreated) film without difficulty. The DeVry film stabilizer, in exhaustive tests, has shown a remarkable effect on quality of sound. Basically, it nuikes the film travel in an "undirectional" manner, completely eliminating lateral and vertical "whip". In other words, it keeps the film traveling at an even, constant rate of speed over the sound aperture, keeps it also tightly held to the sound drum, and assures its traveling in a perfectly straight line, thus doing away with "waves" and unwanted variations in pitch due to lateral or vertical whip, or variations in speed of the film as it travels over the soundhead. The new .\utomatic Loop Setter completely eliminates the possibility of tearing film or sprocket holes. The moment a variation in speed occurs, due to imperfections in the film or loop, it is only necessary for operator to press a button which opens the aperture gate an instant, push the gate back, and automatically the film makes its own adjustment to correct posi tion. This is all done without stoppintj the motion of the film, or the continuity of the image on the screen. Bearings are new glass-hard steel, bearing shaft self-lubricating by special self-oiling units which keep bearings thoroughly oiled at all times for a period of at least two years. Xon-tarnishable chrome used on important exposed metal parts. New easy threading ("Synchrophonic threading") . A flick of the index finger opens all threading units of soundhead segment. 16min Projection Advances ♦ A brief glance at the accompanying chart of a typical 16mm. sound projector reveals the many changes which have taken place in 10mm. talking picture projectors for industrial use. Today, for as little as $'275.00, there are available efficient sound-on-film projectors incorporating features formerly not found in much more expensive machines. As exemplified by one of these, ( the new Model "X" Amprosound developed by Ampro) the new type sound-on-film projectors offer, in addition to low cost, extreme compactness and portability plus a remarkable simplicity of operation. The Model "X" projector with all accessories, including speaker, is contained in one case and weighs only 49 pounds. All operating controls are centralized on one illuminated panel. Threading is very simple. DiAGRAMATic cHABT SHOWING PRINCIPAL poiDts of improvement oo a typical modern 16nun. sound projector, in this case the Amprosound, a product of Chicago's Ampro Corporation. Lower prices are another important feature of the great strides made by commercial film equipment in recent months. SHOW SLIDEFILMS WITH 3 00 WATT PROJECTORS FOR more brilliant projection of slidefilms, S. V. E. Picturol Projectors are now available with 300 watt lamps. Built on time-proved principles, the new high powered S. V. E. projectors provide greater brilliance, yet without increasing the heat on the film or the slide. The patented S. V. E. heat filter and releasing glass which moves back automatically when the film is turned, provides maximum protection for your film strips. Three styles of projectors are available, the AA Tri-Purpose unit which shows single or double frame film strips and 2" x 2" glass slides, the G which shows only single frame strips and the AK wiiich shows only 2" X 2" glass slides. The AA and the G have as standard equipment the new S. V. E. re-wind take-up which re-winds the film in the proper sequence as it is being shown. S. V. E. Model G 300 watt projectors are available in sound slidefilm equipment. Send for complete facts now. Use the convenient coupon! Mof7 r/ifs Coupon Now! #M^ , M.^L^ I SOCIETY FOR VISUAL EDUCATION, Inc. I I Dept. 3B, 100 East Ohio Street, Chicago, III. | I Without obligation to us, send complete facts about the new 300 watt I j S. V. E. projectors and the name of the nearest Producer-Dealers. . I Name I I Address | ♦31