International projectionist (Jan-Dec 1954)

one, if frayed and oil-soaked. Tighten takeup action. Replace belts having more than one splice or coupling. Disassemble the takeup assembly. Inspect all parts for wear. Clean and oil the takeup spindle shaft. Scrub the clutch surfaces with carbon tetrachloride and do not oil them. Wash dirt and oil from the leather friction disk with carbon tetrachloride, dry thoroughly, and oil only one side. Reassemble the takeup and adjust the tension to the correct degree. This may be done by placing a fully-loaded 2000-foot reel of film in the lower magazine and switching on the projector motor. The reel should indeed turn (start turning of its own accord ) , but it should also be easily restrained. 7. Complete Lubrication. Oil and grease the motor, drive transmission, projector mechanism, and soundhead according to manufacturers' instructions, using the proper type of lubricant in every case. Drain the intermittent well and refill with fresh oil, if this has not already been done. Run-in the projector for 30 minutes and note the "feel" of the machine. 8. Automatic Fire Shutter. The projectionist should assure himself that the lifting and dropping action of the safety shutter is perfect. When checking this device by switching the motor on and off, do not turn the motor on while the projector is coasting to a standstill. In other words, wait until the machine is absolutely motionless before turning the motor on again. Failure to observe this precaution may result in injury to the gears. (The timing of the occulting shutter, will be left until projection tests are conducted. It suffices for the present to see to it that undue backlash and endplay are eliminated from the shutter shaft, and that all the bearings have received proper lubrication.) 9. Motor Check. The starting action of the projector motor is an extremely important consideration. A faulty cutout or centrifugal switch must be corrected at this time. All JACKSON'S Reel-End Alarms Automatic, not Eleclricl Projectionists' Fovoritel Patented — truly Dependablel $21.50 per pair on money back guarantee Tesf one at your dealer or write fo American Theatre Supply Co., Inc. 2300 First Ave., Seattle 1, Wash. electrical connections are examined — the starting rheostat requiring special attention — and of course, more than a passing glance must be given the motor switch. An unduly loose or otherwise defective switch should be replaced, and no attempt made to repair it. 10. Film-Flovp Test. This step serves as a final check on the mechani cal functioning of the projector. Thread up the projector with a reel of film and run it off with magazine, mechanism, and soundhead doors open. Observe the flow of the film and the action of all working parts on the film side of the machine. If minor defects are discovered, they are now corrected. The film-flow test also provides an opportunity to ascertain the VIDOSCOPE ANAMORPHIC (Cinemascope) ADAPTORS APPROVED BY: 20th Century-Fox Loew's Sta n leyWa rner Walter Reade Circuit and many others IMMEDIATE DELIVERY DOUBLE DISCOUNT TO DEALERS VERY SPECIAL DISCOUNTS FOR EXPORT Also a complete line of Wide-Angle and Long-Focus projection lenses in all focal lengths from ^V2" to 8" at competitive prices and excellent discounts. WALTER FUTTER 511 5TH AVENUE NEW YORK 17, N.Y. Telephone MU. 2-3056 INTERNATIONAL PROJECTIONIST APRIL 1954 29