Sheet feeding or delivering – Feeding – Separators
Patent
1990-11-05
1991-12-24
Skaggs, H. Grant
Sheet feeding or delivering
Feeding
Separators
271 2, 271177, B65H 304
Patent
active
050745409
ABSTRACT:
Apparatus for singulating respective documents fed thereto, wherein each of the documents is uprightly oriented on an edge thereof and has oppositely facing upright surfaces, and wherein each successive document is slidably movable relative to a next successive document against an interdocument frictional force developed therebetween, the apparatus comprising: first document feeding structure including two first belts, the first feeding structure including first structure for moving the first belts downstream relative to a path of travel in vertically spaced first belt runs; second document feeding structure including a second belt, the second feeding structure including second structure for moving the second belt upstream relative to the path of travel in a second belt run, the second feeding structure including structure for resiliently urging the second belt run into interleaving relationship with the first belt runs; and the first belt runs exerting a downstream frictional force greater than the interdocument frictional force on an upright surface of each successive document for feeding thereof downstream in the path of travel, the second belt run exerting an upstream frictional force greater than said interdocument frictional force on the oppositely facing upright surface of each successive document for feeding thereof upstream relative to said path of travel, and the downstream frictional force exceeding the upstream frictional force, whereby the first belt runs tend to successively feed each successive document downstream in the path of travel against the interdocument and upstream frictional forces.
REFERENCES:
patent: 4909499 (1990-03-01), O'Brien et al.
patent: 4930764 (1990-06-01), Holbrook et al.
patent: 4978114 (1990-12-01), Holbrook
Belec Eric A.
Wright William J.
Pitchnik David E.
Pitney Bowes Inc.
Scolnick Melvin J.
Skaggs H. Grant
Walker Donald P.
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