Sheet feeding or delivering – Delivering – With transfer means between conveyor and receiver
Patent
1976-10-18
1977-12-13
Saifer, Robert W.
Sheet feeding or delivering
Delivering
With transfer means between conveyor and receiver
271197, B65H 2954
Patent
active
040625354
ABSTRACT:
Apparatus for handling sheets of material in which the sheets are received at a pick-up station and conveyed to a discharge station by means of a carrier, in combination with means to maintain a differential of pressure between the sheets and a plenum chamber beneath which a flight of the carrier operates. The invention also contemplates means to discharge the sheets at the discharge station comprising a stripper which enters between the sheet of material being conveyed and the plenum, thus to admit air under atmospheric pressure between the two, permitting the sheet to drop off. The invention contemplates also the use of means to release the vacuum on the sheet of material being conveyed by momentarily shutting off the suction fan from the plenum chamber, permitting the sheet to drop.
REFERENCES:
patent: 3228273 (1966-01-01), Huffman
patent: 3285607 (1966-11-01), Lindemann
patent: 3419265 (1968-12-01), Greco et al.
patent: 3452982 (1969-07-01), Bischoff
patent: 3918586 (1975-11-01), Tyler et al.
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