Typewriter carriage actuating mechanism

Details Typewriter carriage actuating mechanism Typewriter carriage actuating mechanism

1975-04-21

1976-09-07

Burr, Edgar S.

Textiles: fiber preparation

197 92, B41J 1926

Patent

active

039789616

ABSTRACT:
Typewriter carriage actuating mechanism includes ratchet teeth which are successively pushed by an actuating-type pawl to move the carriage. The actuating pawl is swingable toward and away from the ratchet teeth, to permit the teeth to move beneath it, and is also movable parallel to the path of carriage movement to actuate the carriage. A detent pawl positions the carriage after each forward actuation and prevents reverse movement thereof. The teeth and the tooth-engaging portions of the pawls are inclined in such manner that the carriage is movable in both directions by force applied directly to the carriage. At such time the ratchet teeth cam the pawls out of the spaces between the teeth.

REFERENCES:
patent: 752753 (1904-02-01), Moya
patent: 2007359 (1935-07-01), Berger
patent: 2186048 (1940-01-01), Sweeney et al.
patent: 2287185 (1942-06-01), Lohr
patent: 3441119 (1969-04-01), Schweizer

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