Typewriting machines – Typing by other than type-face or type-die – Character formation by impact
Patent
1981-12-21
1984-05-15
Schacher, Richard A.
Typewriting machines
Typing by other than type-face or type-die
Character formation by impact
226175, 226191, 271274, B61J 302
Patent
active
044485549
ABSTRACT:
An apparatus having a track for guiding a sheet therealong and means for feeding a sheet along the track. The feeding means includes a rotatable member having a shaft mounted for rotation, with the rotatable member having a driving periphery extending into the track. The feeding means also includes a coupling unit and means for rotatably mounting the coupling unit at the track, with the coupling unit having an expansible periphery. Also provided is a means including an endless coiled spring for selectively moving the expansible periphery between a first position in which the expansible periphery is uncoupled from the driving periphery and a second position in which the expansible periphery is expanded to form a driving coupling with the driving periphery of the rotatable member to feed a sheet positioned therebetween along the track when the rotatable member is rotated.
REFERENCES:
patent: 1085908 (1914-02-01), Hoe
patent: 2341636 (1944-02-01), Luehrs
patent: 2428316 (1947-09-01), Minkow
patent: 3178173 (1965-04-01), Kalman
patent: 3360099 (1967-12-01), Barr
patent: 4279496 (1981-07-01), Silverberg
Cavender J. T.
NCR Canada Ltd - NCR Canada Ltee
Schacher Richard A,.
Sessler Jr. Albert L.
Wargo Elmer
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