Sheet-handling apparatus

Details Sheet-handling apparatus Sheet-handling apparatus

1977-06-10

1978-05-16

Schacher, Richard A.

Sheet feeding or delivering

Feeding

Pack holders

271 98, B65H 334

Patent

active

040895181

ABSTRACT:
A device for holding down sheets which are stacked on a support has a vertical cylinder mounted above the support and provided with a piston and a piston rod extending from the piston through and to the outside of the cylinder where it carries a sheet-engaging member which exerts pressure on sheets resting on the support. A pair of conduits communicates with the cylinder chambers above and below the piston and a valve is provided which can either connect both conduits with a channel supplying compressed air or which can connect the conduit for the lower chamber with a suction channel. The positive or negative pressure in the respective conduits can be regulated.

REFERENCES:
patent: 2746753 (1956-05-01), Battery
patent: 2995359 (1961-08-01), Gulick

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