Saddle stitching machine for signatures and the like
AssigneeGrapha-Holding AG
InventorHeinz Boss
Life of this patent
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Abstract
A saddle stitching machine wherein the pitch of the chain conveyor which transports successive signatures through the stapling station can be changed by changing the ratio of a transmission which receives torque from the timing shaft of the machine. The conveyor transports the signatures along a straight path and the machine has a reciprocable carriage which is moved back and forth along such path by an adjustable crank drive so that the stroke of the carriage can conform to the selected pitch of the conveyor. The tools which are carried by the carriage are actuated by cams which are movable independently of each other at right angles to the straight path. The cams extend in parallelism with the path of signatures at the stapling station.
Claims20
A convertible cyclically operated saddle-wire stitching machine for the application of wire staples across the folds of a series of stacked groups of sheets, comprising a variable-pitch conveyor for accommodating different numbers of groups of sheets, said conveyor defining an elongated straight path for advancement of the groups of sheets;
- means for driving said conveyor;
- a reciprocable carriage arranged to perform a back-and-forth stroke along said path during each cycle of the machine;
- means for reciprocating said carriage, including means for varying the length of said strokes so as to conform the length of said strokes to the selected pitch of said variable-pitch conveyor;
- staple applying and deforming devices provided on said carriage and actuatable to drive staples through successive groups of sheets on said conveyor and to thereupon clinch such staples;
- and means for actuating said devices, including elongated cams extending longitudinally of said path and means for moving said cams substantially transversely of said path.
Dependencies are inferred from the claim text.