Apparatus for the lifting of coils, spools and the like

Details Apparatus for the lifting of coils, spools and the like Apparatus for the lifting of coils, spools and the like

1984-06-14

1986-01-14

Cherry, Johnny D.

Handling: hand and hoist-line implements

Grapple

Expanding

B66C 154

Patent

active

045642311

ABSTRACT:
Apparatus for the lifting of coils, spools and the like of the type which have an interior opening includes a carrying shaft, guide tracks arranged circumferentially about the carrying shaft, and clamping segments disposed on the guide tracks for movement in a radial and a vertical direction, the clamping segments and guide tracks having a cooperable aperture and a cross shaft accommodated in the aperture such that the cross shaft moves in the aperture during relative movement between the guide tracks and the clamping segments. The carrying shaft has an outer conical surface and the clamping segments have an inner conical surface engaging the outer conical surface on the carrying shaft. A locking device is operable to lock the clamping segments into a radially inwardly disposed position such that when the locking device is released, the clamping segments are extended radially outwardly relative to the carrying shaft as the inner conical surface of the carrying segments slide on the carrying shaft to thereby engage the interior opening.

REFERENCES:
patent: 1489705 (1924-04-01), Leonard
patent: 1527130 (1925-02-01), Griffith
patent: 2158814 (1939-05-01), Ashcraft
patent: 4057279 (1977-11-01), Pykala
patent: 4235469 (1980-11-01), Denny et al.
patent: 4460210 (1984-07-01), Miechur

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