Handling: hand and hoist-line implements – Grapple – Expanding
Patent
1993-11-05
1995-08-08
Kramer, Dean J.
Handling: hand and hoist-line implements
Grapple
Expanding
294 8625, B66C 154
Patent
active
054392640
ABSTRACT:
Prior lifting probes are heavy and awkward to manipulate and operate, and require that the paper roll be destroyed if the probe is jammed in the core of the roll. The present invention allows the main body of the device to be removed if the probe jams to have access to the core, and release the load automatically when the load is set down. It provides an apparatus for lifting objects having a vertically oriented, hollow cylindrical core comprising a) an aperture for connecting a hook or other lifting device; b) a face plate provided with a horizontal aperture; c) a body secured to the face plate having a threaded passageway extending Vertically therethrough for receiving a threaded rod; d) a linkage connecting the hook-connecting aperture to the face plate; e) a hollow sleeve dimensioned to be inserted into the core and comprising at the lower end thereof a plurality of jaw segments forming a diametrically expandable lower end; f) a transverse flange attached to the end of said sleeve having a diameter greater than that of the core; g) a latch assembly attached to the transverse flange and provided with a horizontally extending bolt biased to extend into the aperture in the face plate and a handle for releasably retracting the bolt; h) a rod extending through the sleeve threadably received by the threaded body at the upper end thereof and having at the lower end thereof an outwardly tapered end; and i) a spring biasing the rod downwardly in the sleeve.
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