Suction sheet separator with adjustable feed restraint and stack

Details Suction sheet separator with adjustable feed restraint and stack Suction sheet separator with adjustable feed restraint and stack

1984-02-29

1987-12-15

Rolla, Joseph J.

Sheet feeding or delivering

Feeding

Separators

271104, 271165, 271171, B65H 908, B65H 308

Patent

active

047127830

ABSTRACT:
Sheet feeding apparatus for feeding sheet material one at a time from the bottom of a stack including a horizontal support for a stack of sheets, the horizontal support retaining a vertical stack of sheet material and terminating short of the front end of the stack providing a feed opening which exposes the front end portion of the bottom sheet in the stack. A support ledge for supporting the weight of the front end of the stack of sheets, confronts the feed opening. Suction cups engage the bottom surface of the exposed end portion of the bottommost sheet in the stack and pull the sheet downwardly from the stack through the feed opening. An upstanding front wall engages the front end of the stack of sheets. A movable ledge support has a resilient, flexible and adjustable lip projecting rearwardly into the feed opening from the front wall so that the degree to which the lip projects into the feed opening varies. The front wall is longitudinally moveable rearwardly beyond the front wall to vary the relative position between the front margin of the stack of sheets and the suction cups so that the suction cups can be brought fully within a closure flap where the sheets used are envelopes orientated with the closure flaps on the bottom sides thereof.

REFERENCES:
patent: 920154 (1909-05-01), Kent
patent: 1283659 (1918-11-01), Cameron
patent: 2378306 (1945-06-01), Leonhart
patent: 3458042 (1969-07-01), Mestre
patent: 3893664 (1975-07-01), Thomsen
patent: 3934868 (1976-01-01), Selak
patent: 4027872 (1977-06-01), Bueker

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