Control means for the supply of operating mediums and sheet feed

Details Control means for the supply of operating mediums and sheet feed Control means for the supply of operating mediums and sheet feed

1977-10-04

1980-01-22

Schacher, Richard A.

Sheet feeding or delivering

Feeding

Separators

271108, B65H 308

Patent

active

041846729

ABSTRACT:
Control means for the supply of at least two operating mediums comprises a main valve for controlling the supply of one of the operating mediums and a subsidiary valve for controlling the supply of the or each other operating medium. The or each subsidiary valve is biased into its open or closed state and is adapted for connection to the main valve or the flow of the operating medium therefrom so that its state is reversed by the flow of that operating medium under the control of the main valve. The control means may be employed for controlling the supply of vacuum and compressed air to the lifting and/or forwarding suckers and one or more air blasts respectively of a sheet feeding machine.

REFERENCES:
patent: 3294396 (1966-12-01), Staines
patent: 3419263 (1968-12-01), Weidman

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