Tray tier stacking apparatus

Details Tray tier stacking apparatus Tray tier stacking apparatus

1989-09-27

1991-01-08

Spar, Robert J.

Material or article handling

Apparatus for moving intersupporting articles into, within,...

Stack forming apparatus

4147975, 74128, 74577S, 74578, B65G 5906

Patent

active

049830970

ABSTRACT:
A tray stacking apparatus includes a pawl having a projection piece, a roller for opening the pawl, a roller for returning the pawl, and an urging device for urging the pawl into an open position or a closed position. The pawl is opened during its descent, and is returned to its original closed position at a bottom limit position. The tray stacking operation is effected by one driving operation without the pawl rubbing against the tray and thus, powder is not produced by a rubbing of the pawl against the tray so that a clean working environment may be maintained.

REFERENCES:
patent: 3363781 (1968-01-01), Magnetti
patent: 3858732 (1975-01-01), Kemper

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