Abstract: An adjustable wrench is provided which provides several advantageous aspects. One aspect of the wrench is to facilitate rapid adjustment of the jaws, which are typically spring biased toward one another. Another aspect is the ability to adjust the jaws according to Metric system measurements or English system measurements or the like. A further aspect is the quick and effective tightening of the jaws.

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.