Sheet feeding or delivering – Delivering – Reciprocating conveyors
Patent
1999-02-17
2000-11-28
Ellis, Christopher R.
Sheet feeding or delivering
Delivering
Reciprocating conveyors
271 317, 414753, B65H 2910
Patent
active
061524417
ABSTRACT:
In a method and apparatus for moving gripper bars for the advance of sheet material in a sheet-processing machine with processing stations having upper portions and lower portions, the gripper bars are cyclically advanced in an advance plane which extends between the upper and lower portions of the processing stations. The gripper bars are then returned in the same cycle in the opposite direction to the advance direction in a return plane which is displaced in respect of height with respect to the advance plane. The gripper bars are returned between the upper portions and the lower portions of the processing stations. The advance plane is not connected to the return plane. After termination of the advance movement the gripper bars are set from the advance plane to the return plane and after termination of the return movement they are set from the return plane to the advance plane.
REFERENCES:
patent: 5555969 (1996-09-01), Yerly
patent: 5667211 (1997-09-01), Reist
patent: 5669754 (1997-09-01), Croteau et al.
patent: 5820335 (1998-10-01), Croteau et al.
patent: 5829576 (1998-11-01), Rodier et al.
patent: 5884747 (1996-02-01), Sandstedt et al.
Ellis Christopher R.
Sharma Rashmi
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