Document feeder employing a variable load applicator and an endl

Details Document feeder employing a variable load applicator and an endl Document feeder employing a variable load applicator and an endl

1992-03-05

1993-04-06

Olszewski, Robert P.

Sheet feeding or delivering

Feeding

Separators

271149, 271160, 271256, B65H 304

Patent

active

051996987

ABSTRACT:
An apparatus for feeding documents from a stack of documents, in single file, into a document track, with the apparatus employing an endless belt. The endless belt is mounted on a drive roller and an idler roller to provide a linear portion of the belt which is parallel to the first document to be fed from the stack. The apparatus also includes a retard mechanism which includes a first portion to engage the documents in the stack and also includes a second portion which is parallel to the linear portion of the endless belt and is biased towards the linear portion by a tension spring. The endless belt is made of a material which is designed to wear instead of "glazing" which provides for a positive feed. The endless belt and the retard member are designed to be replaced by an operator of the terminal in which the apparatus is located so as to avoid a service call by a maintenance person. The apparatus also includes a velocity sensor to detect the speed at which a pusher in the apparatus is moving the stack of documents towards the linear portion of the endless belt. If too fast, a motor driving the endless belt is disabled until a time has elapsed to permit stabilization of pressure on the first document to be picked from the stack.

REFERENCES:
patent: 2614837 (1952-10-01), Cuthbert, Jr.
patent: 3219339 (1965-11-01), Gutierrez
patent: 3874732 (1975-07-01), Muller
patent: 3988017 (1976-10-01), Kyhl
patent: 4919412 (1990-04-01), Weigel et al.

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