Sheet feeding or delivering – Feeding – Separators
Patent
1977-06-02
1979-03-27
Stoner, Jr., Bruce H.
Sheet feeding or delivering
Feeding
Separators
271 90, 271107, B65H 308
Patent
active
041462173
ABSTRACT:
An improved mechanism for feeding paper sheets from a stack by suction, wherein the mechanism includes a manifold provided with a plurality of spaced sheet pickup devices carried by the manifold and in fluid communication therewith. Each device includes a main member having an L-shaped element provided with a flexible suction cup on the lower end thereof. The element is shiftably mounted on and extends through the member for movement fore and aft relative to the member, and is releasably secured to the member in anyone of a number of operative positions relative to the member by a set screw or the like so that the suction cup thereof can be spaced relatively close or relatively far from the member. A preferred embodiment utilizes a U-shaped tube coupled at one end thereof to the element and at the opposite end thereof to a short tube projecting laterally from the member near the upper end thereof. A passage extending downwardly from the upper end of the member to the lateral tube permits fluid communication with the manifold. A valve is shiftably mounted on the member and is movable into and out of a passage-closing position. A locking nut is carried on the upper end of the member for releasably locking the latter to the manifold when the member is threaded into the bottom of the manifold.
REFERENCES:
patent: 2097587 (1937-11-01), Dearing
patent: 2698175 (1954-12-01), Rowell
patent: 2867438 (1959-01-01), Hori
patent: 3531103 (1970-09-01), Walton
patent: 3991997 (1976-11-01), Barber
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