Device for discharging sheets from the bottom of a stack

Details Device for discharging sheets from the bottom of a stack Device for discharging sheets from the bottom of a stack

1991-09-27

1993-01-26

Olszewski, Robert P.

Sheet feeding or delivering

Feeding

Separators

271 99, 271105, 271171, B65H 314, B65H 346

Patent

active

051817110

ABSTRACT:
A holder for receiving sheets and discharging sheets therefrom one-by-one from the bottom of a stack of sheets is provided including a carrier having a rear portion, an intermediate portion and a front portion, providing a carrying surface for the sheets, the carrier being bent at the intermediate portion thereof, transverse to the direction of conveyance of the sheets, so as to create a deepened section between the rear portion and the front portion. Lateral supports extend from lateral edges of the carrier, with at least one elevated part provided in the deepened section at the intermediate portion extending transverse to the direction of conveyance on the carrying surface of the carrier. At least one aperture is provided in the carrier near at least one of the lateral supports in the vicinity of the deepened section of the carrier and the elevated part, beneath at least one edge area at a side of the stack of sheets accommodated in the holder, such that a partial vacuum can be produced, by way of the aperture using a vacuum device. A device for introducing and blowing air across the deepened section of the carrier against the side of the stack of sheets creates an air layer between the bottom sheet in the stack of sheets and the remaining sheets in the stack. A transport mechanism discharges the bottom sheet.

REFERENCES:
patent: 2812178 (1957-11-01), Hagren et al.
patent: 3099442 (1963-07-01), Wendricks et al.
patent: 3163414 (1964-12-01), Lingenbrink
patent: 3583696 (1971-06-01), Runzi
patent: 4506875 (1985-03-01), Capdebosco et al.
patent: 5050853 (1991-09-01), LaVos et al.

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