Suction air control device for use with sheet feeds

Details Suction air control device for use with sheet feeds Suction air control device for use with sheet feeds

1976-06-14

1978-05-23

Stoner, Jr., Bruce H.

Sheet feeding or delivering

Feeding

Separators

271 96, B65H 308

Patent

active

040907023

ABSTRACT:
A suction air control device used in conjunction with feed tables for feeding individual sheets in paper processing machines is arranged between a source of vacuum and a sheet feed suction bar. The device incorporates the use of a three-way valve which may be controlled by electric switching pulses, for example, in response to movement of the main operating lever or response to a monitoring device for monitoring double and incorrectly fed sheets in the event two sheets are disposed on top of each other or a sheet is disposed at an angle.

REFERENCES:
patent: 1747809 (1930-02-01), Aldrich
patent: 2670203 (1954-02-01), Banthin
patent: 2844368 (1958-07-01), Dexter et al.

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