| 摘要 |
An adjustable mechanism is mounted in a wrench. The mechanism comprises a cylindrical projection extended from a head of the wrench, the projection including a bore, a recessed portion on one end, and a plurality of dents on the other end around the bore; and a substantially U-shaped joint means at one end of a handle of the wrench, the joint means including a recess, a hole through two vertical portions of the joint means, an aperture adjacent the hole, an elastic member biased between the recessed portion and an inner side of one of the vertical portions, a pin through the hole and the bore to rotatably secure the projection and the joint means, a threaded aperture adjacent the hole, and a depressible spring detent secured within the aperture for urging against one of the dents in a normal position. Handle is pivotable to move detent from one dent to the other for adjusting an angle of wrench head with respect to handle.
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