Pipe wrench locking device

Details Pipe wrench locking device Pipe wrench locking device

1978-02-13

1979-05-01

Jones, Jr., James L.

Tools

Wrench, screwdriver, or driver therefor

Pivoted outer jaw

81167, B25B 1328

Patent

active

041517644

ABSTRACT:
On a conventional pipe wrench, an L-shaped lever arm has the short bisected arm segment cooperatively disposed over and secured by a fixed pivot to a linear extention of the threaded section of the adjustable pipe jaw. A free pivot disposed at the terminus of the bisected arm secures a roller between and in the short bisected arm segment. The L-shaped lever arm and pivoted roller are adaptively sized and shaped to provide a lock means for the pipe jaw when the lever handle is pressed down against the pipe wrench handle, locking the roller against the wrench handle by compressing the roller in detent against the wrench handle.

REFERENCES:
patent: 1036585 (1912-08-01), Dolan
patent: 2102287 (1937-12-01), Smethers
patent: 3578307 (1971-05-01), Lock

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