Single line grapple

Details Single line grapple Single line grapple

1988-03-15

1989-02-28

Cherry, Johnny D.

Handling: hand and hoist-line implements

Grapple

Pivoted jaws

294112, 37182, B66C 310

Patent

active

048079189

ABSTRACT:
A single line grapple is provided comprising an upper and lower block operatively connected to a plurality of arms and tines whereby drawing the blocks together closes the tines. The blocks are drawn together by a cable reeved between an upper sheave assembly connected to the upper block and a lower sheave assembly which engages the lower block by interlocking mechanical components. When it is desirable to open the tines, the lower block assembly is disengaged from the lower block. An automatic disengagement feature is provided whereby lowering the grapple to the ground provides enough clearance between the interlocking components for the disengagement feature to operate.

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