Gripper finger for the gripper spindle of a sheet-fed printing p

Details Gripper finger for the gripper spindle of a sheet-fed printing p Gripper finger for the gripper spindle of a sheet-fed printing p

1991-08-19

1993-04-06

Stormer, Russell D.

Handling: hand and hoist-line implements

Grapple

Fixed and moveable jaw

271 82, 271277, 101409, B65H 2906

Patent

active

051997576

ABSTRACT:
A gripper finger for a gripper spindle in a sheet-fed printing press includes first and second components. The first component has a gripper finger extension which contacts a gripper finger support at a transfer point. The first and second components cooperate to form an enclosure angle for enclosing the gripper spindle, with the first component contributing a maximum of 180 degrees to the enclosure angle and the second component supplementing the enclosure angle. The second component is fastened to the gripper spindle. A first compression spring is disposed between the ends of the first and second for exerting an adjustable, first spring force approximately in a direction of the transfer point. An adjustment screw is threadably engaged with one of the components and has a tip which lies against the supporting plane of the other component for exerting a screw force approximately in a direction of the transfer point. The first spring force and the screw force combine to form a resultant force in the direction of a line connecting the center point of the gripper spindle and the transfer point. A second compression spring clamped between the first component and the gripper spindle urges the first component against the gripper finger with a force greater than the first spring force and in a direction which essentially coincides with the direction of the resultant force.

REFERENCES:
patent: 2882049 (1959-04-01), Koch
patent: 3536321 (1970-10-01), Straube
patent: 4253396 (1981-03-01), Wieland
patent: 4372209 (1983-02-01), Jentzsch et al.
patent: 4647031 (1987-03-01), Smith et al.
patent: 4718342 (1988-01-01), Raab et al.
patent: 4781370 (1988-11-01), Weisgerber
patent: 4813353 (1989-03-01), Raab et al.
patent: 4873926 (1989-10-01), Simeth et al.
patent: 4968081 (1990-11-01), Beight et al.

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