Friction paper feeder

Details Friction paper feeder Friction paper feeder

B - Operations, Transporting

65

H

270/27

B65H 7/12 (2006.01) B65H 3/52 (2006.01)

Patent

CA 1145783

Abstract of the Disclosure 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 suit- ably adjusted in response to changes in the biasing torque.

351248

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