Moving Picture World (Jan-Mar 1912)

THE MOVING PICTURE WORLD 383 ^^M' Projection Department Edited by F. H. RICHARDSON. Projection Machine Mechanisms Part 2 rHIS week the entire department is given over to the second of a series of instructions on mechanisms, designed to cover the latest model of all the leading achines. Herewith we give instructions on the Standard echanism, Model No. 4. Either the Edison, Simplex or lotiograph will follow, depending on which one we can :t ready first. Part i, covering the Powers Six, appeared the issue of January 6th. The numbers refer to parts id plates, thus; 437, P 2, means that part No. 437 will be und on Plate No. 2. nstructions for the Staitdard Mechanism, Model No. 4 topyright, 1912, by F. H. Richardson. All rights reserved.) No. I. Removing the Gate. To remove the gate, loosen 'rew 525, P I, and pull gate and spindle off to the left. INo. 2. Removing Lower Sprocket, Film Chute and Gear. o remove lower sprocket, film chute and gear, drive taper n out of sprocket 453. P 2. Drive taper pin out of gear 454, 2, and pull spindle 452, P 2, oflf to the left. In driving pins ;e a small steel punch. A heavy hammer is undesirable for jich work, A light sharp blow from a small hammer is most ,ifective and least likely to do damage to the parts. Be sure iid drive the taper pins the right way. No. 3. Removing Film Slide and Cradle. To remove ;lm slide and cradle 437, P 2, loosen screws 501, P i; screws e6, P 2, and screw 527, P 2, and the parts will come off. No. 4. Removing Star and Spindle. To remove star and )indle 401, P 2; bushing 402, P i; intermittent sprocket 403, 2, and bushing 404, P 3, first remove film slide and cradle see instruction No. 3); then loosen screws 509, P 2, holding ip 497, P 2, and 498, P 3. The parts (star, sprocket, spindle nd bushings) may then be lifted out. In replacing same, le sure that spindle carrying star 401, P 2, is set exactly Iquare with the aperture. This may be accomplished by 'irning bushings 402, P i, and 404, P 3, which are eccentric, ntil the star 401, P 2, hugs the cam 410 P i, and opposite Sprocket teeth are exactly the same distance from lower dges of strips for film slide 438, P 2. This is important ince if one side of the intermittent sprocket 403, P 2, is )wer than the other, it will necessarily do most of the work if pulling down the film. Another and perhaps better way |f leveling sprocket 403, P 2, is to have a thin piece of metal. xactly square on one end and just wide enough to fit snugly ,1 the film track. Slip this down until it touches the sprocket teeth. If it only touches on one side, manipulate bushing 02, P I, and bushing 404, P 3, until both teeth touch the end f the metal strip. To make this efifective, however, the end 'f the metal strip must be exactly square and it must fit in lie film slide snugly. Still a third way of doing this is as bllows: On the two bushings will be found a scratch mark funning lengthwise on their outer circumference. These Scratch marks should be kept parallel or level with each Jther. These scratch marks may be seen on the inner ends n the two bushings next to the intermittent sprocket. \ No. 5. To Remove Flywheel Spindle. To remove fly yheel spindle 405, P 2 and 4, drive taper pin (see instruction ,~Io. 2) out of hub of cam 410, P i, and loosen screws in collar f09, P 2. Spindle, carrying flywheel, may then be pulled out ;o the left. ! No. 6. To Remove Cam Pin. Cam Pin 411, P 2. in cam 1 10, P I, may be removed by loosening screw 412, P 2. Pin ,vill then slide out to the left. Tap gently, using a small ^lunch if it sticks. ' No. 7. Removing Cam Shaft Bushings. To remove ronze bearings carrying cam or flywheel shaft, same being ocated under cap 496 and 497, P 2, proceed as per instrucion No. 5. No. 8. Top Plate and Flap. Top plate and flap 513, P 3, ire removable by taking out six screws holding same. No. 9. Removing Upper Sprocket and Spindle. Upper sprocket 443, P 3, may be removed from its spindle by driving out taper pin (see instruction No. 2) in its hub. Its spindle, 442, P 2, may be removed by first taking off the sprocket, then driving taper pin out of gear 444, P 3. Spindle then slides out to the left. No. 10. Removing Upper Sprocket Idler Complete. To remove upper sprocket idler bracket and rollers complete, 448, 449 and 450, P 3, loosen screw holding idler lever 446, P 4, and the whole thing will slide out to the right. No. II. Outside Shutter. Outside shutter may be removed from its shaft by loosening screw 522, P 3. No. 12. Shutter Shaft. To remove shaft carrying outside revolving shutter 470, P 4, tap lightly on either side of the shaft with screwdriver handle, at the same time pulling on the shaft. Do not strike the shaft heavily. Tap lightly while you pull on the shaft. No. 13. Outside Shutter Yoke-Holder. To remove yokeholder for outside shutter casting 464, P 4, loosen screws .Soo, P 4. and the part will come away. No. 14. Shutter Casting. To remove outside shutter casting 463, P 4, follow instruction No. 13 and then loosen screws 528, P 4. Part will then come away. No. 15. Front Plate. Front plate 529, P 4, may be removed by first following instructions 13 and 14 and then loosening screws holding plate in place. No. 16. Governor. To remove governor lever 510, P 2, loosen screw 511, P 2, and lever will come oflf. Governor spindle 427, P 5, may be removed by first taking oflf the lever and then driving out taper pin holding gear 428, P 5 Next drive straight pin 432. P 5, out of wings 430, P 5. Next drive taper pin out of collar 433, P 5, and spindle may be pulled out downward. Replacing same is a reversal of the above process. No. 17. Transmission Spindle. Transmission spindle 420, P 5, may be removed by driving taper pin out of gear 423, P 5, driving taper pin out of gear 422, P 5, and driving taper pin out of gear 421, P 5. Spindle will then slide out to the left. No. 18. Driving Shaft. To remove driving shaft 414, P S, drive taper pin out of sprocket 415, P 5. and taper pin out cif gear 417, P 5. You can then slide the spindle out to the left. No. ig. Framing Device Spindle. To remove framing device spindle 456, P 5, take out cotter pin 530, P 5, and pull spindle out, with framing device eccentric 457, P i, on it. You can then also slip the sliding box 459, P i, out to the left if you wish. No. 20. Outside Shutter Horizontal Shaft. Outside shutter horizontal shaft 469, P 4, may be removed by driving taper pin out of gear 475, P 4. Shaft will then slide out to the left. No. 21. Outside Shutter Vertical Gear. Outside shutter vertical gear 474, P 3, may be removed by complying with instruction No. 20, and then loosening screws 523, P 4, and bronze bearing 471, P 3. No. 22. Vertical Shutter Shaft. To remove vertical shaft .j68, P 4, follow instruction No. 13, then drive taper pin out of gear 475, P 4, and slide shaft out, upward, at the same time sliding gear 472, P 4, oflf. No. 23. Magazine Shoe. Magazine Shoe 465, P 4, is removed by loosening screws 531, P 3. No. 24. Tension Strips. Tension strips on gate above tension shoes 489 and 490, P 2, are held in place by screws. Remove the screws and the strips will come off. The bottom end of the tension shoe goes through the metal of the gate and is held by a small pin in either shoe. These shoes may be taken out by removing these small pins. No. 25. Idler Bracket Tension Spring. Idler bracket tension spring 534, P i, will come oflf when screw 533, P i, is removed. No. 26. Idler Bracket. Idler bracket 487, P 2, may be removed by following instruction No. 25. then pull pin 535, P I, out and bracket will come away.