Moving Picture World (Jan-Mar 1912)

38 THE MOVING PICTURE WORLD (P 2), loosen screw 718 (P 2) and back it out several turns, as it is countersunk into the shaft. Set machine so that gear 621 (P 4) will not strike spokes of gear 630 (P 4) and then tap gently on end of shaft 622 (P 2 and 3), using a soft punch or a piece of wood. A washer is sometimes placed between casing and cover hubs. Don't lose it; also don't forget to put it back. No. 29. — Automatic Shutter. Should automatic shutter fail to drop, examine lever 627 and connecting link 628 (P 7) and see that they work freely and are not bent. Take off cover 623 (P 2) (see instruction 28) and see if springs 741 (P 7) are in good condition. Also examine inside edge of friction casing and see if it is as it should be and not rough or scratched. Should automatic shutter fail to raise properly, first try a drop of heavy oil. The clutch acts by centrifugal force throwing out weights 626 (P 7), overcoming action of springs 741 (P 7) and forcing friction shoes 625 (P 7) out against interior rim of casing 624 (P 7). This revolves the casing, forcing lever 627 (P 7) ahead and raising shutter flap 697 (P i). Do not use thin oil in automatic shutter friction casing as it tends to reduce friction too much. Use a heavy oil sparingly. No. 30. — To Remove Framing Carriage. To remove the framing carriage from the machine, first take off aperture plate 687 (P 2). Remove the gate by taking out the three screws holding its hinge. Remove the flywheel (see instruction No. 2). Take out screw 651 (P 4). Next loosen the screws holding upright support rods (two of them) upon which framing carriage slides up and down, pulling rods out from below. The whole framing carriage may then be lifted away. After removing old carriage a new one may be installed by reversing the process of taking it out. Two of the screws holding support rods may be seen by looking in through projection lens hole in front plate of machine. No. 31. — Removing Framing Lever and Its Connections. To remove framing device proceed as follows: Remove lower sprocket shaft 645 (P 3) by loosening screw 738 in sprocket 646 (P 2) and pulling shaft out to the left. Take off wing-nut 652 (P 5) and bolt. Remove latter by backing it out with screw-driver; 651 (P 3) is head of this bolt. Remove screws 651 and 730 (P 4) and the whole thing will then come away. No. 32. — Anchoring Machine Table. Machine table should be perfectly rigid. To accomplish this, set legs in floor sockets (to be had of Nicholas PoAver Company), spreading the legs slightly before fastening sockets to the floor. If the table is not set solidly, there may be vibration and a slight swaying of the head under the pressure of the crank which will cause side motion of the picture on the screen. No. 33. — Keep Sprockets Clean. The face of all sprockets, but particularly that of the intermittent sprocket must be kept scrupulously clean. This is of the utmost importance. Dirt and gum on face of intermittent sprocket are likely to cause picture to jump on the screen. Dirt and gum on upper or lower sprockets are likely to cause film to run off the sprocket, thus losing the loops. An ordinary toothbrush is best for cleaning the sprockets. It sliould be used every day. Just a little kerosene on the brush will help if there is gum on the sprockets. No. 34. — The Film. The upper magazine must be so set sidewise that the film will come down to the upper roller straight and without any side pull. It must leave the lower sprocket and enter the lower magazine without touching either side of the magazine valve. The machine is threaded by bringing film down from upper magazine under large roller in front of top sprocket, and up over the sprocket, closing top sprocket idler down on film. Carry film down across aperture and engage sprocket holes with teeth of intermittent sprocket, it will form upper loop of proper size. Close inIf you stretch the film down tight and then raise it a little more than two pictures before engaging with intermittent sprocket, it will form upper loop of proper size. Close intermittent idler down and then close gate. Next bring film up over lower sprocket and close its idler, leaving a loop between the intermittent and lower sprockets long enough to reach down an inch below top of lower sprocket. Carry end of film on through valve of lower magazine and attach to lower reel in usual way, taking up all slack by revolving lower reel. No. 35. — Lower Magazine. The lower magazine should be so set that it hangs straight up and down and in line, front and back, with the table. The belt must be crossed so that as you look into the magazine the front of the reel travels down, the reel traveling clockwise. No. 36. — Take-Up Tension. The take-up tension is adjusted by setting the collar on pulley end of spindle in or out, thus applying more or less pressure to the spring which holds the two halves of the grooved, split pulley together. Tension is not regulated by the belt but by the two halves of the pulley rubbing together under more or less friction, according to how much is supplied by the spring. Take off the belt and pull the two halves of the pulley apart a little and you will see how it works. There should be no more tension than barely enough to revolve the reel when it is full. Anything more is very hard on the film and tends to cause loss of the lower film loop. No. 37. — The Lamp. The lamp should not be allowed to become dry from lack of lubrication. It is next to impossible to properly handle the light using a dry lamp? Once a week take the lamp apart, all but the insulated joints, which should not be disturbed, and grease all screws and moving parts with vaseline, wiping all surplus ofif. Then drop all screws and moving parts into a box of good graphite. Shake ofif the surplus graphite, but do not wipe it off, and put lamp together again. You will be surprised at how much better you can handle the light. Keep metal clean where carbons make contact with it. Scrape and clean thoroughly at least once a week. Dirty carbon contacts induce heating and loss of power and light. Be sure the wires make good electrical contact with lamp binding posts. When terminal lugs become burned, throw them away and put on new ones. It does not pay to use burned lugs. When wires inside lamphouse become burned (the life gone out of them), cut away the burned portion. Burned wires cause high resistance and loss. Unless removed they will eventually burn off entirely, causing vexatious delay. No. 38. — Setting Lens. Screws 704 (P s) holding lens-ring should be loosened after lens is screwed into place and turned until handle of lens is in most convenient position. The screws may then be set up just tight enough to hold the ring firmly in place. NAMES AND NUMBERS OF PARTS. Order parts by number. 601 Main Frame Casting. 602 Top Frame Casting, incl. Thumb screws. 603 Framing Carriage. 604 Top Frame Supporting Rods (2). 605 Stereo Bracltet Holder with Thumbscrew. 606 Stereo Bracket with Thumb screw. 607 Stereo Collar Casting. 608 Stereo Lens Rod. 609 Small Top Roller. 610 Sm.all Top Roller Spindle. 611 Set Collar for Small Top Roller. 612 Top Roller Bracket. 613 Large Top Roller. 614 Large Top Roller Spindle. 615 Top Roller Bracket Spring. 616 Set Collar for Large Top Roller. 617 Top Sprocket. 618 Top Sprocket Spindle. 619 Top Sprocket Feed Gear (Large). 620 Top Sprocket Feed Gear (Small). 621 Pinion for Automatic Shutter Spindle. 622 Spindle for Automatic Shutter. 623 Friction Case Cover for Style B Automatic Shutter. 624 Friction Case Cover for Style B Automatic Shutter. _ 625 Friction Shoe with Spring for Style B Automatic Shutter. 626 Friction Weight for Style B Automatic Shutter. 627 Lever for Style B Automatic Shutter. 628 Link for Style B Automatic Shutter. 629 Counter-Weight for Style B Automatic Shutter. 630 Crank Shaft Driving Gear. 631 Crank Shaft. 632 Crank with Handle, complete. 633 Small Gear Meshing in Driving Gear. 634 Large Gear for Front Shutter. 635 Small Gear for Front Shutter. 636 Spindle for Front Shutter. 637 Bracket for Front Shutter. Set 638 Set Collars (2) for Front Shut ter Spindle. 639 Stud with Screw for Front Shutter Bracket. 640 Large Idler Gear. 641 Large Idler Gear Spindle. 642 Large Idler Gear Spindle Collar. 643 Take-up Feed Driving Gear. 644 Take-up Feed Pullev. 645 Take-up Feed Spindle. 646 Take-up Feed Sprocket (same as No. 617). 647 Framing Device Clamp. 648 Framing Device Lever Socket. 649 Framing Device Lever Socket Link. 650 Framing Device Lever. 651 Framing Device Screw. 652 Framing Device Wing Nut. 653 Take-up Roller Bracket. 654 Take-up Roller Carrier. 655 Take-up Roller Spindle. 656 Set Collar for Small Spindle (same as No. 611). 657 Take-up Rollers (2). 658 Take-up Roller Bracket Spring. 659 Intermittent Roller Bracket. 660 Intermittent Roller. 661 Intermittent Roller Bracket Spindle. 662 Intermittent Set Collar for Shaft. fy63 Intermittent Spring. 664 665 Intermittent Spindle (not sold separate from No. 666)*. 666 Geneva (with Spindle No. 665). 667 Intermittent Sprocket. 668 Gate Spring Support. 669 Apron Complete with Roller. 670 Intermittent Bushing (Large). 671 Intermittent Bushing (Small). 672 Fly-Wheel. ' Oil " ment. 673 Cup for Intermittent MoveIntermittent MoveIntermittent Movc 674 Cover foi ment. 675 Cam for ment. 676 Kly-Wheel Spindle.