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780 HANDBOOK OF PROJECTION FOR
motor is running, tighten the screw in this clamp bushing sufficiently to hold the rod in place and prevent the knob from moving through vibration of parts.
INSTRUCTION NO. 61.— On the operating side of the projector at the bottom of the magazine is a horizontal lever, the purpose of which is to raise the discwheel end of part 621P, P. 4, thus releasing belt 659P, P. 4, which operates as follows : When ready to start the show raise the lever up and start your motor by throwing in the handle of switch 329P, P. 4, next set speed regulating knob 512P, P. 4, in running position, if it is not already there. Now when you are ready to project the picture drop the lever slowly down with one hand and as the fire shutter raises raise the dowser with the other hand.
INSTRUCTION NO. 62.— Belt 334P, P. 4, operates the takeup The take-up gear 342P, P. 4, is on take-up spindle, 348P, P. 4, which carries the lower reed. This spindle is supported by bar 346P, P. 4, which is hinged to the machine casting on the opposite side, just back of the figures 342P, P. 4. The front end of this lever, including the take-up spindle, rests in and is supported by belt 334P, P. 4. The result is that when the reel in the take-up magazine is empty there is very little friction on this belt, but as the film is wound on the reel the weight increases, and thus an automatically regular takeup tension is supplied in excellent form.
INSTRUCTION NO. 63.— Any angle may be given the projector as a whole by loosening the clamps which secure the legs and raising or lowering the projector to secure the desired setting.
INSTRUCTION NO. 64.— The condenser is supported in a metal casing which forms a heat reservoir and will go far toward reducing lens breakage. The casing is so designed that it may be adjusted to suit various conditions. It is advisable that the lens be kept about one-sixteenth of an inch apart.
INSTRUCTION NO. 65.— On the top of the carbon clamp of your lamp, under the clamping screw, is a hole which should be kept filled with powdered graphite at all times. Do this and you will have no trouble with your carbon clamp screws working hard.
INSTRUCTION NO. 66.— The cups on the motor should be kept filled with a good grade of medium oil.