Sheet feeding or delivering – Feeding – Separators
Patent
1975-05-05
1976-11-02
Love, John J.
Sheet feeding or delivering
Feeding
Separators
271120, B65H 302, B65H 354
Patent
active
039892379
ABSTRACT:
A buckling type paper sheet feeding mechanism wherein the top sheet of a stack is separated from the underlying sheet by first driving the front sheet edge in a rearward direction against a rear restraint, causing the top sheet to buckle, and then reversing the direction of sheet drive, causing the top sheet to be fed in a forward direction over a front stack edge restraining or hold-down means. The top sheet is moved rearward by a variable force means which provides a progressively increasing buckling force, to thereby ensure reliable feed of paper of varying types, weights and humidity content, while at the same time minimizing the possibility of double sheet feed. A variable position rear restraint moves rearward, in synchronism with operation of the variable force means, to increase the column length of the top sheet as the buckling force increases.
REFERENCES:
patent: 418942 (1890-01-01), Crane et al.
patent: 1517254 (1924-12-01), Scholin
patent: 3325164 (1967-06-01), Kedzierski
patent: 3350089 (1967-10-01), Niccoli
patent: 3425685 (1969-02-01), Liva
patent: 3649003 (1972-03-01), Muller et al.
Froula, J. D. and L. M. Simson, "Variable Force Sheet Feeding Mechanism", IBM Technical Disclosure Bulletin, vol. 18, No. 2, July 1975, p. 329.
Goff, Jr. Willie
Simson Lowell M.
International Business Machines - Corporation
Love John J.
Sirr Francis A.
Stoner Jr. Bruce H.
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