Core gripper

Handling: hand and hoist-line implements – Grapple – Expanding

Patent

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Details

294 67A, B66C 154

Patent

active

042458617

ABSTRACT:
A device for gripping the insides of cores of rolls of materials, and comprising a polygonal central cam, multiple gripping cylinders which are held against the cam by resilient retainer rings and a cylindrical sleeve which retains the gripping cylinders in longitudinal slots passing through the sleeve. The gripping cylinders are caused to move radially inward and outward when the sleeve is rotated relative to the cam and the cylinders are urged outward by the corners of the cam or inward by the resilient retainer rings as the cylinders move from the corners of the polygon to the sides of the polygon.

REFERENCES:
patent: 2561745 (1951-07-01), Lerch
patent: 3006565 (1961-10-01), Pelletier
patent: 3007652 (1961-11-01), Heckman
patent: 3792868 (1974-02-01), Flagg

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