Grapnel

Details Grapnel Grapnel

1981-05-14

1983-04-12

Cherry, Johnny D.

Handling: hand and hoist-line implements

Grapple

Well type

102504, 114305, 294 66R, 294 97, 294116, B66C 110, F42B 1356

Patent

active

043795803

ABSTRACT:
A grapnel is disclosed which comprises a plurality of arms pivotably mounted on a substantially rod shaped body. The arms have at their free ends catching points forming an angle with the arms and near the foot of the catching points auxiliary catching claws extend substantially in the direction of the arms. A piston and cam-shaped portions of the grapnel arms co-operate to urge the arms into an outwardly extending position upon a traction on the grapnel rope.

REFERENCES:
patent: 19659 (1858-03-01), Williams
patent: 858009 (1907-06-01), Meyer et al.
patent: 890499 (1908-06-01), Clough
patent: 999795 (1911-08-01), Jones
patent: 1295076 (1919-02-01), Sherman et al.
patent: 1753737 (1930-04-01), Bohm
patent: 4057024 (1977-11-01), Adams

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