Conveyors: power-driven – Conveyor section – Unit load conveying surface means moved about an endless or...
Patent
1993-03-15
1994-11-01
Bidwell, James R.
Conveyors: power-driven
Conveyor section
Unit load conveying surface means moved about an endless or...
1984701, B65G 4786
Patent
active
053601017
ABSTRACT:
A gripper conveyor includes a moving conveyor chain (1) which is provided with grippers (3). Each of the grippers (3) includes a fixed clamping jaw (31), a pivotal clamping jaw (33) and a spring (36) which biases the grippers (3) towards their closed positions. The conveyor includes an opening means (40) which functions to open selected grippers (3) while the conveyor chain moves, and the pivotal clamping jaw (33) of respective grippers (3) has a maneuvering arm (37) which is activated by the opening means (40). The movable clamping jaw (33) is pivotally mounted on a shaft (32) for limited, free pivotal movement in the pivoting direction. Because the center of gravity (331) of the movable clamping jaw (33) is distanced from the shaft (32) the movable jaw (33) is able to swing downwardly and outwardly into abutment with the support surface (N1, N11) on which the article, for instance a newspaper, to be gripped lies. Optionally, the outward swinging movement of the movable jaw (33) is assisted by a spring (35). The maneuvering arm (37) may be arranged to swing outwardly away from the movable jaw (33) after having reached its end position in the gripping direction.
REFERENCES:
patent: 3204756 (1965-09-01), Lesch
patent: 3269524 (1966-08-01), Canfield
patent: 4381056 (1983-04-01), Eberle
patent: 4921294 (1990-05-01), Klopfenstein
patent: 4982834 (1991-01-01), Jacobsen
patent: 5064187 (1991-11-01), Muller
patent: 5178262 (1993-01-01), Merkli et al.
Bidwell James R.
Idab Wamac AB
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