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730 HANDBOOK OF PROJECTION FOR
they did before, by observing mark you made on face of flywheel gear. If gears grind in spots only, then apply grinding powder to tight spots only.
CAUTION. — These gear grinding, shaft-fitting directions are not recommended by us, except under conditions where they are absolutely necessary. Our advice is to have a spare intermittent movement and send the one requiring repairs to a service station or to the factory. We have given them because there are circumstances where the projectionist may be compelled to attempt a repair which will involve these things.
The rotten stone (Tripoli) and Arkansas powder may be had from the Simplex factory or from a Simplex distributor.
LUBRICATING AND ADJUSTING DOUBLE BEARING INTERMITTENT MOVEMENT.— For the oil box end of
the movement all lubrication is applied through the main oil cup, which is the cup covered by a cap. Oil placed in this cup reaches all the shafts and bearings at that end of the movement, as well as the star and cam.
TAKE NOTICE.— Before oiling through this cup, set the intermittent movement casing, by means of the framer, so that the oil cup is in central position and pointing straight up.
With the cup in correct position, as above, watch the glass oil gauge on the cover of the intermittent oil well, while you feed oil into the cup until the oil level reaches the mark, which is just half way up the glass.
WARNING. NEVER PUT IN SO MUCH OIL THAT IT REACHES THE TOP OF THE OIL GAUGE GLASS. HALF WAY UP IS JUST RIGHT.
THE OUTER BEARING of the intermittent sprocket shaft is oiled by means of an oil cup located on top of the flange of the outer bearing arm. This cup is closed by means of a steel ball, which must be pressed down by the tip of the oil can snout when injecting oil. ONE OR TWO DROPS IS ENOUGH. Over-oiling will result in oil reaching the film, hence must be avoided.
TO ADJUST THE MOVEMENT, remove it from the mechanism. See instruction No. 2, page 708. Place movement on bench, with main oil cup in central position and pointing straight upward. Place the movement "on the lock." That is to say, rotate the flywheel until the intermittent sprocket cannot be moved, setting it as nearly as you ean midway between the two points where the sprocket may be moved.