Stack elevating apparatus

Details Stack elevating apparatus Stack elevating apparatus

1976-03-01

1977-07-05

Saifer, Robert W.

Sheet feeding or delivering

Feeding

Pack holders

271 34, 271125, B65H 130

Patent

active

040335780

ABSTRACT:
A stack elevating apparatus for a sheet feeder. A tray for supporting a stack of sheets is arranged for movement between at least one elevated position and a lowered position. The tray is arranged to descend to the lower position by gravity. An inertial force is provided for controlling the rate of descent of the tray. In one embodiment the inertial force is provided by an inertial member which is arranged to rotate in response to the descent of the tray and for continued rotation after the tray has stopped. In another embodiment a system is provided for amplifying the inertial force provided by the inertial member. A selectively engageable friction drive system for elevating the tray forms yet another embodiment.

REFERENCES:
patent: 1065085 (1913-06-01), Steere
patent: 1647506 (1927-11-01), Coughtry
patent: 1689729 (1928-10-01), Kelly
patent: 3301551 (1967-01-01), Cassano et al.

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