Society of Motion Picture Engineers : incorporation and by-laws (1927)

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776 Transactdons of S.M.P.E., Vol XI, No. 32, 1927 the perforations which might result if a sprocket were used. The pressure of these rollers can be released quickly by an attachment on the top of the machine permitting manipulation of the film by hand during threading. The entire operation takes 43^ minutes for 1000 feet of film. If the film breaks, an idler running on the film operates a lever which opens a switch, thus stopping the machine immediately. There is another switch which can be opened at any time by hand. The film is enclosed in magazines, and the entire machine is operated by one Fig. 2. The Buffing Machine. 3^ H.P. motor. The machine is made of aluminum and measures 50 inches X60 inches X 36 inches and v/eighs only 95 pounds complete. We manufacture a number of different machines for the film industry, and together with the film renovator our buffing machine is probably the most valuable. This is also simple, efficient, economical and fool-proof. The bufiing machine is intended for the processing of new film by waxing and pohshing the emulsion side. First, the film passes over an idler, emulsion side down. This idler rotates another idler in a shallow tank of wax solution, thus passing a thin film of the solution from one idler to the other, and thence to the emulsion side of the film. All excess is scraped from the idler by a knife. The tank is refilled