Sheet feeding or delivering – Feeding – With means to align sheet
Patent
1977-12-12
1979-10-16
Saifer, Robert W.
Sheet feeding or delivering
Feeding
With means to align sheet
271195, B65H 900
Patent
active
041711319
ABSTRACT:
In a first embodiment a stop having a plurality of ports is connected to and covers an end of a rectangular sleeve. In a region near the stop a narrow wall of the sleeve also has a plurality of ports. A nozzle coupled to a pump provides a flow of air into the other end of the sleeve and the air exits through the ports. With this arrangement, a rectangular sheet inserted into said other end of the sleeve is fluidly brought into registration with the narrow wall and stop. As the sheet is brought into registration fluid injected or drawn through holes in a wide wall of the sleeve is used to force at least a part of the sheet against one of the wide walls and the resulting friction serves to brake the traveling sheet, thereby minimizing impact forces between the sheet, the narrow wall, and the stop. In a second embodiment, similar to the first, the narrow wall and stop include internal projections against which an inserted sheet is registered. In a third embodiment, similar to the first, a manifold is coupled to the ports and a vacuum pump is coupled to the manifold to accelerate registration. In a fourth embodiment, similar to the third, the pumps are replaced with a reversible pump to register and discharge a sheet.
REFERENCES:
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patent: 3173683 (1965-03-01), Tebbs
patent: 3405977 (1968-10-01), Albright
patent: 3422411 (1969-01-01), Smith, Jr.
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patent: 3784189 (1974-01-01), Thiel
patent: 3834799 (1974-09-01), Blosser et al.
patent: 3918706 (1975-11-01), Craft
patent: 4066254 (1978-01-01), Stange et al.
Cassano James R.
Hamlin Thomas J.
Smith Richard E.
Stange Klaus K.
Saifer Robert W.
Xerox Corporation
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