Tools – Wrench – screwdriver – or driver therefor – Slidable jaw adjustments
Patent
1986-03-03
1987-12-15
Schmidt, Frederick R.
Tools
Wrench, screwdriver, or driver therefor
Slidable jaw adjustments
81138, 81139, 81143, 81145, B25B 1314, B25B 1318
Patent
active
047124555
ABSTRACT:
A sliding jaw pipe wrench has a jaw adjustment mechanism comprising a longitudinally extending series of transverse recesses formed in one surface of a elongate shank on which the movable jaw of the wrench is formed. The shank is received in a retaining pocket in the wrench handle on which the stationary jaw is formed, and the handle includes a transverse locking pin for engagement in, and disengagement from the respective recesses to retain the movable jaw in position when engaged in a recess and allow the shank to be moved to adjust the jaws when disengaged from the recesses. The locking pin is operated by a trigger-like lever pivoted on the handle and connected to a locking pin by an elongate actuating rod. The wrench is provided with a fine adjustment mechanism in the form of a stud threaded transversely through an aperture in the handle so that the inner end of the stud can be tightened against an edge of the shank opposite the recesses. The fine adjustment mechanism takes up slack in the movable jaw when gripping a pipe.
REFERENCES:
patent: 468601 (1892-02-01), Gorsuch
patent: 643632 (1900-02-01), Cooper
patent: 761868 (1904-06-01), Atkinson
patent: 794067 (1905-07-01), Ackerman
patent: 1471413 (1923-10-01), Palmeter
patent: 1643002 (1927-09-01), Beszczak
Meislin Debra S.
Schmidt Frederick R.
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