Handling: hand and hoist-line implements – Grapple – Pivoted jaws
Patent
1992-06-08
1993-11-09
Mitchell, David M.
Handling: hand and hoist-line implements
Grapple
Pivoted jaws
294106, B66C 142
Patent
active
052596540
ABSTRACT:
Tongs for the gripping of articles to be displaced and operable between an open relation in which an article to be displaced can be received and a collapsed relation in which a received article is seized between cooperative gripping members for displacement. Comprising the tongs is a pair of L-shaped lifting arms pivotally secured at their upper ends to a central lifting eye. Lower legs of the lifting arms extend parallel and spaced apart from each other and extend to opposite gripping members at their distal ends. The gripping members are biased toward a collapsed relation in which to grip a received article by a pair of oppositely connected springs in tension. Opposing collapse of the lifting arms and gripping members are a pair of trigger arms each laterally secured from an opposite lifting arm and both pivotally secured to an intervening arm-stop which also restricts displacement of the gripping members between the open and collapsed relation of the tongs.
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Kramer Dean
Mitchell David M.
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