Handling: hand and hoist-line implements – Grapple – Collar-engaging
Patent
1975-07-28
1977-06-28
Ward, Jr., Robert S.
Handling: hand and hoist-line implements
Grapple
Collar-engaging
214 1P, 214 25, 269126, 269237, B66C 142, B66C 162
Patent
active
040321835
ABSTRACT:
Disclosed is an elevator for handling pipe with enlarged ends by gripping the end of the pipe with the enlargement between two hinged arm pieces. In the specific embodiment shown, one arm piece fits into the end of the pipe with enlarged end in the form of a collar, and cooperates with a C-shaped receptacle which is fixed to the end of the other arm piece, and which fits around the pipe and catches the pipe collar to prevent the pipe from separating from the first arm inserted into the pipe end. A spring-actuated lock prevents the arms from opening and releasing the pipe.
REFERENCES:
patent: 1106130 (1914-08-01), Clinger
patent: 1528145 (1925-03-01), Davidson
patent: 1572616 (1926-02-01), Mohnkern
patent: 3532229 (1970-10-01), Scaggs
patent: 3779594 (1973-12-01), Monroe
Baugh Hollis A.
Baugh John L.
Brown Oil Tools, Inc.
Ward, Jr. Robert S.
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