Constant spacing document feeder

Details Constant spacing document feeder Constant spacing document feeder

1982-03-15

1984-05-29

Stoner, Jr., Bruce H.

Sheet feeding or delivering

Feeding

Separator and conveyor

271122, 271259, 271270, 271274, 198461, 198575, 198577, B65H 352, B65H 534

Patent

active

044510276

ABSTRACT:
An improved document feeder employs sets of rollers between which it feeds documents of different lengths to generate and maintain gaps of equal length between the documents while transporting them at a constant speed. A first group of rollers separate stacked documents and start the documents moving at a low speed along the track. A second group of rollers, operated at a higher speed, receive documents from the first group of rollers and increase the speed of the first document relative to a second document, still in contact with the first group of rollers, thereby providing an initial gap which continues to lengthen until the second document reaches the second group of rollers. A third group of rollers receives the documents after they leave the second group, imparting a constant system transport speed to them. The first and second groups of rollers are then able to further adjust the gap by changing the speed of a second document, and after the desired gap has been established, reverting to transport speed before transferring the second document to the third group of rollers.

REFERENCES:
patent: 3771783 (1973-11-01), McInerny
patent: 3827545 (1974-08-01), Buhayar
patent: 4077620 (1978-03-01), Frank et al.
patent: 4113244 (1978-09-01), Ruenzi
patent: 4140310 (1979-02-01), Schroter
patent: 4158456 (1979-06-01), Holland-Letz
patent: 4318540 (1982-03-01), Paananen et al.
patent: 4331328 (1982-05-01), Fasig

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