05203846 is referenced by 14 patents and cites 7 patents.

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.

Title
Media feed roll apparatus and method for its use
Application Number
7/791036
Publication Number
5203846
Application Date
November 12, 1991
Publication Date
April 20, 1993
Inventor
Neil A Polit
Crystal Lake
IL, US
Richard J Kuhns
Crystal Lake
IL, US
Agent
Jones Day Reavis & Pogue
Assignee
Dick Company
IL, US
IPC
B65H 3/52
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