Crane grab

Details Crane grab Crane grab

1977-01-31

1978-11-28

Marbert, James B.

Handling: hand and hoist-line implements

Grapple

Pivoted jaws

294 70, 37186, B66C 110

Patent

active

041272986

ABSTRACT:
A crane grab suspended by a single crane wire includes an operator-activated control means shiftable between a first position, in which open grab halves will be closed for digging in response to the crane wire being hoisted, and a second position, in which the grab halves are allowed to open themselves when placed on the ground and thereafter hoisted again.

REFERENCES:
patent: 226557 (1880-04-01), Seward
patent: 512825 (1894-01-01), Hunt

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