Friction paper feeder

Details Friction paper feeder Friction paper feeder

1981-11-27

1983-01-18

Stoner, Jr., Bruce H.

Sheet feeding or delivering

Feeding

Separators

271125, 192 56C, B65H 352

Patent

active

043688810

ABSTRACT:
Apparatus for individually feeding sheets in which a friction feed roller positively driven in the direction of feed opposes a friction retarding roller biased in the reverse direction with a predetermined torque and urged against the feed roller with a predetermined force. The reverse bias torque is regulated by means of a spring and a controllable clutch which is disengaged in response to a predetermined strain in the spring. The spring and controllable clutch may comprise a helical spring clutch. In another aspect of the disclosure, the retarding roller is carried by an arm for rotation about a pivot center located such that the normal force urging the two rollers together is automatically suitably adjusted in response to changes in the biasing torque.

REFERENCES:
patent: 2468193 (1949-04-01), Goff
patent: 2626029 (1953-01-01), Gutterman
patent: 2892629 (1959-06-01), Osgood et al.
patent: 3754754 (1973-08-01), Peterson
patent: 3857559 (1974-12-01), McInerny
patent: 3957366 (1976-05-01), Taylor et al.

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