B - Operations – Transporting – 65 – H
Patent
B - Operations, Transporting
65
H
B65H 29/68 (2006.01) B65H 31/32 (2006.01)
Patent
CA 2047715
2047715 9109804 PCTABS00005 This invention solves the problem that when a temporary support is inserted across a stacker, that stacker may damage vertically falling sheets. In the invention, a vertically movable table (11) is located such that the conveyor propels the sheets falling downwardly to form a pile of sheets thereon. A fork unit (14) moves inwardly across the stacker as a temporary support during pile removal. A brake (48) and clutch (49) unit is connected to the pulleys. A sheet control includes pivoted fingers (20) aligned with the belts (24) and secured to a shaft. An actuating unit (35) pivots the shaft to move the fingers into engagement with said aligned belts on the downstream side of the pulleys. To reduce or eliminate sheet damage, a pneumatic control provides a conjoint control to actuate said brake and pivot the finger shaft for momentarily stopping sheet movement in synchronism with the actuation of the fork. Thus, no sheets will be in the area of the moving fork.
Borden Ladner Gervais Llp
John Brown Inc.
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