| 摘要 |
A wrench (10) including first (11) and second (12) jaw members each having first and second gripping portions (23) for gripping an article to be rotated about a work axis and a leverage portion spaced from the gripping portion; one or two handles, the one handle (13) being connected to the leverage portion of the first jaw member for pivoting movement relative thereto about a leverage axis parallel to the work axis and the other handle (29) (where provided) extending from the leverage portion of the second jaw member in the plane of rotation of the first handle; engagement means on the handle for movement therewith for engagement with the leverage portion of the second jaw member to urge the first and second leverage portion apart, and connecting means (14) connecting the first and second jaw members and holding them in opposed disposition, the connecting means being operatively interposed between the respective opposed gripping portions and the opposed leverage portions and being arranged to allow pivoting of the jaw members with respect to each other, the connecting means being adjustable in length to vary the distance between the gripping portions to suit different sized articles. Preferably, the connecting means is in pivotal engagement with at least one jaw member, the connecting means is in the form of a length adjustable nut and bolt assembly, the nut being in the form of a cylindrical pin having a diametral bore for receiving a length adjustable bolt comprising a sleeve (26) and a screw (27) in threaded engagement with a threaded bore extending axially into the sleeve. |
