Richardson's handbook of projection (1927)

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776 HANDBOOK OV PROJECTION FOR sion on the framing handle is increased. Later design has a plate supported by two lugs in place of the half round support, the adjustment being the same. INSTRUCTION NO. 46.— Where it is desirable to use halfsize lens the company furnishes a special mount with a revolving shutter. The half-size lens cannot be used with the regular mount as shown at 318P, P. 1 and 3. INSTRUCTION NO. 47.— To remove motor drive unit disconnect wires leading to switch and remove belt 659P, P. 4, by taking out pin 669P, P. 4. Looking under casting 621P, P. 4, you will see a horizontal link connected to a vertical lever by a screw. Remove this screw. Next take off nut securing upper end of toggle link to casting 621P, P. 4. Remove screw 658P, P. 4. Motor unit may now be taken out as a whole. Motor may be removed from casting 621P, P. 4, by removing screws in bottom of casting 62 IP., P. 4, and screws in coupling 650P, P. 4. INSTRUCTION NO. 48.— In order to remove driving friction wheel which bears on friction disc 622P, P. 4, first follow Instruction No. 47, then remove 638P, P. 4, from shaft 635P, P. 4. This key is held in position by a screw in its face. Next remove three screws in the face of the leather washer 633P, P. 4, which will release disc wheel. INSTRUCTION NO. 49.— To remove the friction material on face 625P, P. 4, follow Instructions Nos. 47 and 48 and then remove screws in the outer end (you cannot see them in the cut) of the friction wheel. This releases the friction material, which may be removed and new material be secured from the manufacturer and put in its place. The friction material will need no turning or trueing up after being put in. INSTRUCTION NO. 50.— To remove disc wheel 622P, P. 4, release the set screw in the belt pulley on the shaft of the disc, after first having released the screw in the rim of knurled adjusting nut on the rear end of the shaft. Back this nut off, whereupon you may pull the friction disc and shaft away. INSTRUCTION NO. 51.— To adjust the intermittent sprocket and cam in order to eliminate lost motion in the intermittent, first loosen screw 201P, P. 2, and screw 49P, P. 1, after which slightly turn eccentric sleeve 43P, P. 1, by pressing down on projecting pin 50P, P. 1, at the same time revolving the flywheel by hand. When you think you have