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

Record Details:

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126 SOUND MOTION PICTURES ninth hole from the "Start" frame. Then, when you line up this splice with the lower edge of the aperture place track, the "Start" frame will be at the aperture. 5. Set up the record on the turntable. In doing this, the following method must be strictly observed to avoid rush of imperfect synchronism or damage to records: the motor must never be turned when the adjusting record is on the turntable. Hold the record with both hands and lay it on the turntable so that the starting arrow is at the place where the needle comes. Wipe off the record lightly with the cleaner provided. Pick up the forward end of the reproducer unit between the thumb and forefinger of your left hand so that the tips of the thumb and finger project about one-half inch below the bottom of the unit. Move the unit over until the needle point is above the starting groove. Rest the tips of the thumb and forefinger on the record surface in such a way as to hold the needle point just oflFthe record. Place your right hand with the fingers resting lightly on the underside of turntable, near the edge, and the thumb on the tip of the record, near the edge. Hold the turntable steady and, by moving the thumb, turn the record so that the starting arrow comes exactly below the needle point. Lower the needle gently into the starting groove, at this point, by slowly opening the thumb and forefinger between which it is held. Do not push the point into the groove by sliding it sidewise across the uncut record surface, but lower it straight down. When it is in place, rest the fingers lightly on the top of the reproducer and gently press it toward each side to make sure the needle point is in the groove. Put the record clamp over the centre pin of the turntable and press it down on the record firmly, but not too heavily. Turn the motor flywheel by hand until the turntable and record have revolved about half a turn.