Sheet feeding or delivering – Delivering – To receiver for pack of sheets
Patent
1978-04-28
1980-02-19
Schacher, Richard A.
Sheet feeding or delivering
Delivering
To receiver for pack of sheets
271197, B65H 3108
Patent
active
041891406
ABSTRACT:
An apparatus for forming thin paper sheets or signatures into an upright stack first arranges said sheets on a generally horizontal endless belt conveyor in a shingled stream with the leading edge of each sheet beneath the immediately preceding sheet and the trailing edge portion of each sheet projecting behind the trailing edge of said preceding sheet, and moves said conveyor continuously forwardly to bring the sheets successively into abutment with a stop so the driving force of the conveyor causes a stack to form from the bottom. The endless belt conveyor has a perforate bet, and a vacuum system below the perforate belt draws the sheets constantly and firmly downwardly against said perforate belt in a part of the path which ends at the stop, so that each sheet is conveyed positively forwardly against the stop. In one form of the apparatus a driven feedroll bears upon and frictionally engages the projecting trailing edge portion of each sheet as it enters the stack to apply a feeding force which assists in driving each sheet against the stop.
REFERENCES:
patent: Re26004 (1966-04-01), Hoffswell
patent: 2772880 (1956-04-01), Garrett
patent: 2867438 (1959-01-01), Hori
patent: 2987314 (1961-06-01), Monaghan
patent: 3781005 (1973-12-01), Stobb
patent: 3947018 (1976-03-01), Stange
IBM Technical Disclosure Bulletin, vol. 12, No. 8, Jan. 1970, p. 1226, "Bottom Stacking Apparatus for Documents", Jurgens, Krause, and Newsom.
R.R. Donnelley & Sons Company
Schacher Richard A,.
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