B - Operations – Transporting – 65 – H
Patent
B - Operations, Transporting
65
H
B65H 31/08 (2006.01) B65H 29/14 (2006.01)
Patent
CA 2142591
The invention relates to over and under delivery sheet accumulators. Prior sheet accumulators required considerable time to adjust the accumulator for pass-through, under or over sheet delivery. The present invention solves this problem by providing a retractable ramp mechanism which allows for quick and easy adaptability to optionally over or under accumulate and to optionally pass-through sheets without accumulation into stacks. The retractable-ramp accumulator includes driven endless elastic belts (10, 12) to feed sheets therebetween along a sheet-feeding path (24), a sheet stacker (26) having a stacking location and including a selectively releasable stop gate (16), and at least one selectively retractable ramp (14) for selectively deflecting sheets out of the sheet feeding path (24) for selectively feeding under or over previous sheets that are stopped in the stacking location by the stop gate (16). In one embodiment, an upper and lower set of ramps (37, 76) are arranged such that while one set of ramps is retracted, the other set of ramps is interposed in the sheet feeding path (24), so that sheets can selectively be "over" ar "under" accumulated.
Bell & Howell Phillipsburg Company
Bell And Howell Llc
Kirby Eades Gale Baker
LandOfFree
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