Conveyors: power-driven – Conveyor section – Reciprocating conveying surface
Patent
1984-08-29
1986-07-15
Valenza, Joseph E.
Conveyors: power-driven
Conveyor section
Reciprocating conveying surface
1984686, B65G 2502, B65G 2510
Patent
active
046000992
ABSTRACT:
A conveyor for transporting an elongated workpiece in a normal horizontal transport direction and generally perpendicular to the workpiece has a rail extending horizontally in the normal transport direction. A carriage rides on the rail in the transport direction and pivotally carries a pair of end links at respective generally parallel support axes extending horizontally generally perpendicular to the transport direction and spaced apart in the transport direction. A lifting member is pivoted on the end links at respective member axes generally parallel to and offset from the support axes. A lower link pivoted on the end links below the lifting member forms with the lifting member and end links a parallelogrammatic linkage which is movable between a raised position with the member projecting above the rail and a lowered position with the member below the upper rail surface. A spring urges the linkage into the upper position. A stop pawl is pivotal on one of the links in the lowered position of the linkage between an up position projecting upward beyond the upper rail surface and a down position below the upper rail surface. This stop pawl lies below the upper rail surface in the raised position of the linkage. Thus on movement of the carriage along the rail opposite to the transport direction with the linkage in the lowered position the pawl can be deflected against the force of its spring into its down position so the carriage can pass under a workpiece and on movement in the transport direction the stop pawl engages a workpiece sitting on the upper rail surface without such downward deflection and can push it.
REFERENCES:
patent: 671440 (1901-04-01), Huber
patent: 1567473 (1925-12-01), Starr
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patent: 4075949 (1978-02-01), Davis et al.
patent: 4114767 (1978-09-01), Fur
patent: 4353457 (1982-10-01), Haley
patent: 4440292 (1984-04-01), Regenbrecht
patent: 4523672 (1985-06-01), Navarro
Alexander Daniel R.
Dubno Herbert
Ross Karl F.
Valenza Joseph E.
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