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FOR MANAGERS AND OPERATORS 571
collar 395, P. 2, whereupon you can pull star 394, P. 6, and its shaft out to the right.
Caution. — In replacing the intermittent sprocket or putting in a new one be sure to get the felt washer between the eccentric bushing and brass collar, and be sure to get the taper pin in hub of sprocket right end to. I would strongly advise managers and operators against attempting to fit a new intermittent sprocket to the old shaft. These parts are presumed to be standard, but the intermittent sprocket and star are literally the heart of the moving picture machine, and the variation of only so much as 1/1000 of an inch would be very perceptible on your screen. It would be much better and would cost but a few cents to send the star and shaft to the factory by parcel post and have a new sprocket fitted to the shaft when the old one wears out. See General Instruction No. 8.
~No. 13.— To Remove Eccentric Bushings 396, 397 and 398, or either one of them, follow Instruction No. 12, and then loosen the screws 'in caps, 497, 498, P. 2, which will release the bushing. It may be necessary to tap the right hand cap lightly, since it may be stuck to the oil well casing by shellac which is used to make the joint between the frame and the oil well tight. At the right hand end of intermittent sprocket 399, P. 2, is a brass collar, 396, P. 2, which rests snugly against the end of eccentric bushing 397, P. 2. Between these two is a thin felt washer. This washer is for the purpose of preventing oil from leaking out of the oil well. In replacing oil well cover, clean the edges thoroughly, and smear edge of cover with thick shellac (to be had from any painter). After clamping cover on let stand a few hours betore putting in oil.
Caution. — Don't put on too much shellac or it will squeeze out inside the well and may break off and injure the intermittent movement, as these small pieces are very hard.
No. 14.— Adjusting the Intermittent. See General Instruction No. 5. In order to accomplish this adjustment loosen cap screws 509, P. 2, and, using a punch set in the holes provided in eccentric bushings 397 and 398, P. 2, gently tap the bushings in such way that the side toward you will move in an upward direction. Be very sure and turn both these bushings the same amount, since otherwise you will raise one end of the shaft more than the other, thus not only throwing the star out of square with the cam, but throwing the work of pulling the film down on the teeth on one side of