Vertical rise sheet feeder

Details Vertical rise sheet feeder Vertical rise sheet feeder

1975-10-24

1977-02-15

Saifer, Robert W.

Sheet feeding or delivering

Feeding

Pack holders

271126, 271171, 214 85A, B65H 108

Patent

active

040079252

ABSTRACT:
A vertical rise sheet feeder is provided comprising means responsive to the weight of a stack of sheets for positioning and maintaining the stack at a feed level for the feeding of a single sheet at a time from the top of the stack. The sheet feeder includes a fixed platform and a vertically movable platform for supporting the stack. The movable platform is powered by a stabilizer means and its movement is regulated by linkage means interconnected by a torsion bar. The torsion bar controls operation of the linkage means in unison and provides a degree of freedom to the movable platform for maintaining the top of the stack in an aligned position such that a feed roller means exerts uniform and equal forces on the sheets to provide for accurate and positive feeding of the sheets from the stack. The feeder also includes a sheet locating and guiding means for maintaining the stack of sheets centered on the movable platform and for guiding the sheets as they are fed from the stack.

REFERENCES:
patent: 1130109 (1915-03-01), Rolier
patent: 1307261 (1919-06-01), Lee
patent: 1811428 (1931-06-01), Dibble
patent: 2850203 (1958-09-01), Eurey
patent: 3285601 (1966-11-01), Zeuthen
patent: 3406964 (1968-10-01), Eichorn
patent: 3843115 (1974-10-01), Di Fulv io et al.

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