Sheet feeding or delivering – Feeding – Separators
Patent
1986-03-12
1987-12-01
Skaggs, H. Grant
Sheet feeding or delivering
Feeding
Separators
221259, 221268, 91402, 60594, B65H 324
Patent
active
047099127
ABSTRACT:
In order to accomplish the separation and further conveyance of the uppert sheet of a stack of sheets by the simplest possible means, an elastic friction finger resting with slight pressure on the uppermost sheet of the stack is provided, which is set into reciprocating motion in a direction (A-B) that is inclined by a certain angle (.alpha.) relative to the surface of the stack, the movement having a low amplitude and a relatively high frequency. The stack itself is inclined backward relative to the horizontal by a certain angle (.beta.). The drive of the friction finger may be effected by means of a bellows connected to a valveless pump, by a pneumatic cylinder, or by a crank drive. It is also possible to connect a pneumatic cylinder, provided with vent bores controlled by the piston, to a supply line that is at constant negative pressure or overpressure.
REFERENCES:
patent: 1230070 (1917-06-01), Gottschalk
patent: 2208299 (1946-07-01), Marcus
patent: 2467740 (1949-04-01), Haller
patent: 3513658 (1970-05-01), Okura
patent: 3910567 (1975-10-01), Songer
patent: 3966190 (1976-06-01), Grant
patent: 4167239 (1979-09-01), Bihler
patent: 4290593 (1981-09-01), Irvine
patent: 4591140 (1986-05-01), Illig et al.
Illig Egon
Kniep Volkmar
Fraumhofer-Gesellschaft zur Forderung der angewandten Forschung
Skaggs H. Grant
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