Apparatus for supporting and controlling the grabbing device of

Details Apparatus for supporting and controlling the grabbing device of Apparatus for supporting and controlling the grabbing device of

1977-09-20

1980-01-01

Spar, Robert J.

Implements or apparatus for applying pushing or pulling force

Step-by-step traveling bar

Pawl actuated

37184, 414624, B66D 126

Patent

active

041812913

ABSTRACT:
The one ends of the closing rope and holding rope of the jib or other hoisting gear-suspended grab of a winch are wrapped about a common drum and travel equivalent paths for syncronization of rope movement as the grab is raised and lowered. The opposite end of the closing rope is wrapped about an auxiliary drum or other extensible, retractible load rope anchoring device, equipped to be rotated, on command by an amount sufficient to open or close the grab.

REFERENCES:
patent: 1000677 (1911-08-01), Hayward
patent: 1058539 (1913-04-01), Botten
patent: 1401951 (1922-01-01), Armstrong
patent: 1441023 (1923-01-01), Poland et al.
patent: 1914613 (1933-06-01), Neffendert et al.
patent: 2808166 (1957-10-01), Stine
patent: 3523614 (1970-08-01), Walker

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