1,161,433. Typewriters. GRAPHIC TECHNOLOGY Ltd. 5 Oct., 1967 [7 Oct., 1966], No. 44805/66. Heading B6F. Feeding page-width transfer material.-In a typewriter or line machine in which continuous stationery is fed past a printing station and where such movement tends to draw off carbon papers from supply spools, the carbon papers are fed at a slower rate than the stationery by an independent motor which is energized only during actual movement of the stationery. The carbon paper supply spools are mounted on spindles 18 and have fixed thereon, helical spur gears 20 which mesh with gears 19 on a common shaft 21 driven by a gear 30 from the independent motor 33. The common shaft is biased so the gears 19, 20 are not in engagement so that manual manipulation of the carbon webs is possible. A knob 25 permits the gears 19 to be axially shifted into engagement and latched thereby a lever 27 engaging a slot in the spindle 21. Such axial movement causes a collar 34 to engage a lever 36, close a switch 38 and light a lamp 40 which indicates that power is connected to the feed device and to the typewriter. A further collar 35 operating a lever 37 and a switch 39 moves an additional distance to the left, Fig. 2, only when there is actual feeding movement of the stationery. This closes the switch, lights a second lamp 41 and starts the independent motor. The additional movement is derived from the axial thrust of the helical gears 19 due to the rotational pull on the spindles 18 caused by the feeding of the stationery. When the stationery feed stops, the drive of the motor 33 causes a reverse axial thrust and the switch 39 is opened and the motor 33 stops.
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