Sheet feeding apparatus

Sheet feeding or delivering – Feeding – Separators

Reexamination Certificate

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Reexamination Certificate

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08962077

ABSTRACT:
Apparatus for feeding sheets and other flat articles, especially with varying thickness, or from stacks of varying height, includes a device called a prompter. The prompter (136) comprises a body (137), a drive roller (142), mounted on and driven by shaft (135), an opposing idler roller (141), and a ribbed belt (138) stretched around the rollers. The body pivots about shaft (135) at the driven roller end. The prompter may alternatively feed articles from a stack to a singulator or other device, or it may comprise the driver of a singulator. A prompter (136), used as driver, combines with a retarder (120), called a dancer, to form a singulator (133). The dancer moves back and forth along the article flow path (121), responsive to thickness of articles, or to pull force on an article by a downstream takeaway device, to thereby automatically adjust the gap at the nip (144) of the singulator.

REFERENCES:
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Caudill et al, Sheet Paper Feed System, IBM Technical Disclosure Bulletin, vol. 14 No. 5, p. 1445, Oct. 1971.
Habich et al, Envelope Picker-Separator, IBM Technical Disclosure Bulletin, vol. 19 No. 3, pp. 746-747, Aug. 1976.

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