Sound motion pictures : from the laboratory to their presentation (1929)

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78 SOUND MOTION PICTURES can be insured only if all objections are eliminated. Management cannot, therefore, expend too much effort to guarantee a performance of quality. In the management of the FoxWest Coast Theatres, the operation of projection of sound equipment has been standardized. The following details have proved practical and conducive to the best results. These instructions are intended to give a complete operation in the handling of sound projection from the beginning to the first changeover and, of course, are to be repeated with each succeeding reel: Fox Movietone and Vitaphone Installations i. Place the film in the upper magazine, emulsion side toward light. 2. Be certain that the main blade of the shutter is up in position and that the intermittent has just completed one full movement. 3. Thread the mechanism in the usual manner. 4. Be sure that the STARTING MARK on the film is in frame at the aperture. 5. Make the loop between the intermittent and the lower sprocket, so that the film rests against the index finger held across the opening of the lower film shield. It is important that this loop be of proper length so that the film between aperture and the sound gate will measure 14J inches. 6. Thread the film to the left lower idler under the lower sprocket. Draw tight to the sound gate sprocket. Then raise the film two holes before closing the idlers. 7. For film-recorded sound pictures, it is important that film be perfectly centred on the slit in the sound gate and that the gate be tightly closed. 8. Select the disk corresponding to the number of the film. 9. Place the disk on the turntable and clean it with the especially provided record cleaner.