Sheet feeding or delivering – Feeding – Separators
Patent
1983-12-12
1985-10-22
Schacher, Richard A.
Sheet feeding or delivering
Feeding
Separators
271122, 271125, 271126, B65H 352
Patent
active
045483973
ABSTRACT:
To separate sheets from a stack, for example being fed upwardly, two separating stages are provided: one separating stage is formed by a driven third feed roller (28) located immediately above a fixed separating element (30), for example a rubber block. If, by chance, two sheets should be fed, the sheets are then fed to a second separating stage which includes a driven second roller (16) which, for example, may drive the third roller, and a first roller (20) therebeneath which can freely rotate in feeding direction. It is secured to a shaft by a one-way clutch, preventing reverse rotation. To impart limited reverse rotation to the first roller (20), the shaft thereof is rocked backwardly by an eccenter (50, 52) coupled to the shaft (18) which drives the entire apparatus. To feed sheets from a stack, the stack is height-adjustable by sensing deflection of the third roller (28) upon engagement with the topmost sheet of the stack, and controlling switching of an electric elevator motor, raising the stack, in accordance with sensed deflection.
REFERENCES:
patent: 3583696 (1971-06-01), Runzi
patent: 3754754 (1973-08-01), Peterson
patent: 3995952 (1976-12-01), Schoppe
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