Apparatus for changing the spacing between the leaders of succes

Details Apparatus for changing the spacing between the leaders of succes Apparatus for changing the spacing between the leaders of succes

1981-12-10

1987-05-26

Schacher, Richard A.

Sheet feeding or delivering

Feeding

With means to align sheet

271237, B65H 906

Patent

active

046679502

ABSTRACT:
A stream of partially overlapping paper sheets is advanced below one or more wheels which are driven by the sheets and transmit torque to one or more rotary disc cams which cooperate with a roller follower provided on an intercepting device having a pallet which can be moved into and retracted from the path of movement of oncoming leaders of successive sheets. The periods of dwell of the pallet in the path of movement of the leader of each sheet are selected in such a way that the spacing between successive leaders is equalized to match the sum of spacings of successive leaders divided by the number of such leaders. A leaf spring biases the roller follower against the periphery of peripheries of the cam or cams. The transporting unit which advances the stream past the equalizing station for the pallet of the intercepting device is driven independently of the conveyor or conveyors which deliver sheets to the transporting unit and/or of the conveyor or conveyors which receive equalized sheets from the transporting unit.

REFERENCES:
patent: 672529 (1901-04-01), Hunter
patent: 3716228 (1973-02-01), Bottcher
patent: 4046369 (1977-09-01), Kluge
Xerox Disclosure Journal, vol. 2, No. 3, p. 49, "Document Feeder Without Register Gates", Charles J. Mahler.

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