Handling: hand and hoist-line implements – Grapple – Fixed and moveable jaw
Patent
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.
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Kramer Dean J.
Man Miller Druckmaschinen GmbH
Stormer Russell D.
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