Projection engineering (Jan-Dec 1931)

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$1,000 for Junior Talkie Portable Projector $1,150 for junior, with amplifier and speaker. $2,150 for two projectors, with amplifier and speakers. F.O.B. Derby, Conn. Announcing the BELL PORTABLE TALKIE The Latest Achievement of Sound Equipment Based on Compactness and Quality The sound and projection heads are built in one unit. The Photo Electric Cell assembly on the outside of the case conveys the impulse to the amplifier circuit. Film running over an idler connected to a circuit breaker keeps the circuit open ... a film break releases and shuts off the entire unit. An ingenious rear shutter is built in, while the aperture is constantly cooled byforced draft. Entirely assembled in double sheet steel, asbestos lined, fireproof and noiseless operation is assured besides eliminating the use of a fireproof booth. All moving parts are ball bearing, hermetically sealed in grease. Special condensers handle the intense light from the 1000 watt projection lamp and throw a full theatre size picture on a screen 100 to 125 feet distant. Bell Equipment is sold complete in every detail. I — VERY salesroom/ advertising agency/ church/ school/ hotel/ hospital/ auditorium and community center can now have perfect sound and visual projection. With this added educational and amusement attraction/ you have revenue producing facilities which will spell profits. We introduce this most modern series of talkie projectors in response to popular demand. Learn more about Bell Equipment! You will profit from the introduction. In construction/ every engineering problem has been surmounted— from the very portability of the apparatus to the prevention of fire hazard. Perfection in sound AND visual projection was our aim — price, the secondary consideration. We believe that the many features incorporated in both the Junior and De Luxe models, made possible by years of actual working experience/ will convince you that the ultimate of perfection has been achieved. Now is the time to see and hear the portable talkie equipment by which others will be judged and valued. REPRESENTATIVES WANTED FOR FOREIGN AND STATE RIGHTS BELL EQUIPMENT CORPORATION ^Portable Talkie Equipments Suite 605 .. . 729 SEVENTH AVENUE . . . NEW YORK Telephone BRyant 9-9890 Telegram WESENOJ