Sheet feeding or delivering – Feeding – Separators
Patent
1991-11-12
1993-04-20
Olszewski, Robert P.
Sheet feeding or delivering
Feeding
Separators
271274, B65H 352
Patent
active
052038467
ABSTRACT:
A media feed roll apparatus is provided for the transfer of articles such as envelopes, magazines and newspapers, one by one, from a stack to a transport which conveys these articles to a work station for printing or labeling. The apparatus and methodology according to the invention allow for independent adjustment of the roller nip between upper drive rollers and lower facing rollers so that an article such as an envelope can be inserted into the nip with the roller pairs providing substantially equal nip pressure on the article. Roller nip pressure is achieved through a mechanism allowing raising and lowering of the upper drive rollers, preferably by a pivotal action, which are independently suspended. Upon being released from the mechanism, the rollers are biased toward the article thereby creating substantially equal nip pressure on the article even if the nip spacing is different as a result of the article having different thicknesses.
REFERENCES:
patent: 2635874 (1953-04-01), La Bore
patent: 3933350 (1976-01-01), Mignano
patent: 4050690 (1977-09-01), Michelson
patent: 4324396 (1982-04-01), Albright et al.
patent: 4522520 (1985-06-01), Takenoya et al.
patent: 4961566 (1990-10-01), Labombarde
patent: 5011129 (1991-04-01), Holbrook
Kuhns Richard J.
Polit Neil A.
A. B. Dick Company
Olszewski Robert P.
Reiss Steven M.
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