| 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, has one or two handles, 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, and an engagement mechanism on the handle for movement therewith for engagement with the leverage portion of the second jaw member to urge the first and second leverage portions apart, and a connector 14 connecting the first and second jaw members and holding them in opposed disposition, the connector 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 connector being adjustable in length to vary the distance between the gripping portions to suit different sized articles, where the connector is preferably in pivotal engagement with at least one jaw member, and 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
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