B - Operations – Transporting – 65 – H
Patent
B - Operations, Transporting
65
H
270/164
B65H 3/06 (2006.01) B65H 3/52 (2006.01)
Patent
CA 1217789
ABSTRACT OF THE DISCLOSURE 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 eccentric (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.
443082
Macrae & Co.
Runzi Kurt
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