Richardson's handbook of projection (1930)

1262 HANDBOOK OF PROJECTION FOR intermittent movement out until this oil tube is in proper position or you will probably ruin the tube. Aside from this you have only to follow the instruction above noted in order to take the intermittent movement out of the mechanism. ADJUSTING INTERMITTENT MOVEMENT.— The intermittent movement should be so adjusted that whereas there will be no binding whatsoever between the star and cam, still when the movement is fully on the lock no rotational movement can be felt in the intermittent sprocket. In other words, the movement must be adjusted as tight as it is possible to adjust it without setting up binding or undue friction between the star and cam. To accomplish this adjustment it is best to remove the intermittent movement in its entirety from the mechanism. To do this proceed as follows : First, open the door on the non-operating side including its lower part. If the attachment of sound equipment prevents the opening of this door, it will be necessary to remove it by taking out the three screws which hold it on. Next remove the knurled thumbscrew which holds the large diameter pulley and gear. Pull this gear off its spindle. Next, insert a screw driver through the hole in the casing under the projection lens and loosen the screw holding the set collar on the end shaft holding the formica gear just back of the flywheel. Next, remove the set collar. Next, remove the part which carries the shutter controlling knob (see Fig. 445) by taking out the screws at the top and bottom which hold it to the frame. Then looking in at the face of the oil well, you will see two large flat head screws holding steel lugs or fingers. These lugs or fingers when in operation impinge upon the