Sheet feeder devices

Details Sheet feeder devices Sheet feeder devices

1990-05-02

1991-10-15

Skaggs, H. Grant

Sheet feeding or delivering

Feeding

Separators

271121, 271124, 271127, B65H 332

Patent

active

050566040

ABSTRACT:
A device for extracting sheets seriatim from the top of a stack of sheets and feeding them to a downstream sheet-using device, includes a pivoted tray which supports a stack of sheets; a nudger roll disposed at a fixed location above the tray and with which the top sheet of the stack can be brought into contact to slide the top sheet in a sheet-feed direction by frictional engagement when the nudger roll is rotated in a feed direction; a retard pad mounted for pivotal movement about an axis at or near the movable end of a first lever of which its other end is mounted for pivotal movement about a fixed support, the pad being biased into frictional engagement with either the nudger roll or a separate sheet-feed roll, the retard pad having movable with it a first arm of which movement about the pivotal axis of the pad is effective to increase the mechanical bias on a pivotally-mounted second lever adapted to urge the tray towards the nudger.

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patent: 4801134 (1989-01-01), Yokoyama et al.
patent: 4815724 (1989-03-01), Sumida et al.
patent: 4822023 (1989-04-01), Miyoshi
patent: 4830353 (1989-05-01), Hendriks et al.
patent: 4922291 (1990-05-01), Adachi
patent: 4925062 (1990-05-01), Tsukamoto et al.

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