Multiple plane corrugation-vented bottom vacuum corrugation feed

Details Multiple plane corrugation-vented bottom vacuum corrugation feed Multiple plane corrugation-vented bottom vacuum corrugation feed

1987-10-29

1989-03-21

Rolla, Joseph J.

Sheet feeding or delivering

Feeding

Separator and conveyor

271 20, 271 94, 271 98, 271105, 271161, 271165, B65H 106, B65H 312

Patent

active

048136603

ABSTRACT:
A bottom vacuum corrugation feeder includes a vacuum chamber with a bi-level support surface that support a plurality of apertured belts. The bi-level support surface has a series of raised members on a portion of its surface that corrugate the bottom sheet of a stack of sheets that are supported on a stacking tray. The stacking tray inclues raised members on its stack support surface that allow the venting of air from an air knife positioned in front of the sheet stack for separating the bottom sheet in the stack from the remainder of the stack. Recesses are included in the stack support surface of the stacking tray in order to reduce vacuum leak around the front edge of the sheet stack.

REFERENCES:
patent: 2817519 (1957-12-01), Beck
patent: 3405935 (1968-10-01), MacNeill
patent: 4005794 (1977-02-01), Lundquist
patent: 4305576 (1981-12-01), Hamlin
patent: 4324395 (1982-04-01), Silverberg
patent: 4336929 (1982-06-01), Hanzlik
patent: 4381893 (1983-05-01), Silverberg
patent: 4411417 (1983-10-01), Browne
patent: 4418905 (1983-12-01), Garavuso
patent: 4560158 (1985-12-01), Wilson
patent: 4595190 (1986-06-01), Amarakoon
patent: 4660819 (1987-04-01), Allocco, Jr. et al.

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