Typewriting machines – Including type-set-assemblage mounted on carrier and... – Plural type-heads mounted for selective individual...
Patent
1981-12-23
1983-12-13
Pieprz, William
Typewriting machines
Including type-set-assemblage mounted on carrier and...
Plural type-heads mounted for selective individual...
4003326, 400328, 101 9311, 101 9317, B41J 150, B41J 734
Patent
active
044202679
ABSTRACT:
A serial printer of the type in which a column shift of a carriage carrying a type wheel is effected through a mutual engagement between the rack and the screw member. A first and a second screw members are splined to a common shaft adapted to be driven by a suitable power source. The first and second screw members are rotatably carried by a first and a second carriages having reset positions defined at opposite ends of the printer. The first and the second screw members have screw threads inclined in opposite directions and adapted to mesh with the teeth of a common rack which is slidable over a predetermined stroke in the column-shift direction and adapted to be driven by a suitable driving member. By making the type wheels rotate by a number greater than that required for ordinary type selecting operation, the rack is slided by the driving member to selectively engage one of the first and second screw members thereby to shift the selected one of carriages.
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Pawletko et al., "High Speed Printer" IBM Technical Disclosure Bulletin, vol. 19, No. 9, pp. 3355-3356, 2/77.
Alps Electric Co. ,Ltd.
Dunne Gerard F.
Pieprz William
Shoup Guy W.
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