Device for transferring a lithographic plate

Details Device for transferring a lithographic plate Device for transferring a lithographic plate

1988-04-08

1989-10-17

Spar, Robert J.

Conveyors: power-driven

Conveyor for changing attitude of item relative to conveyed...

For changing both the elevation and the posture of...

198410, 198399, 1984861, 101477, 271225, 271185, B65G 1500

Patent

active

048740772

ABSTRACT:
A device is provided for transferring a lithographic plate (S) from a horizontal conveyor (1) to an overhead conveyor (25). The transfer device has orienting means (2) for receiving a transversely extending lithographic plate from the horizontal conveyor (1) and positioning a folded over end portion (12) of the lithographic plate in the path of a hook member (13) carried by an endless chain (30) of an elevator (3), so that the plate (S) is lifted into a vertical position and then deposited on a positioning bed (4). An upper part (23) of the bed (4) is pivotable by a pneumatic or hydraulic cylinder (22) to position the end portion (12) of the plate (S) inwardly of the locus of the hook member (13) as the hook member passes around a lower sprocket wheel (15) of the elevator, so that the hook member passes by without again picking up the lithographic plate. Thereafter, the pivotable portion (23) is pivoted back into alignment with the rest of the positioning bed to present the lithographic plate for collection by the overhead conveyor (25).

REFERENCES:
patent: 2682946 (1954-07-01), King
patent: 4223779 (1980-09-01), Hopkins
patent: 4602774 (1986-07-01), Kobler
patent: 4605212 (1986-08-01), Kobler

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