| 摘要 |
A reversible adjustable wrench comprises a handle, which has a fixed jaw and a guiding groove at an end thereof. The fixed jaw has a gap and two cover pieces secured at lateral sides of the fixed jaw to form a chamber having an opening. The chamber has a guiding face therein, which has a stop portion at an end thereof closing to the tip end of the fixed jaw. A movable jaw has an end thereof slidable received in the guiding groove of the handle. An adjusting worm is pivoted at the handle for driving the movable jaw moving toward and away from the fixed jaw. A roller is received in the chamber of the fixed jaw, which has a part thereof exposed out of the chamber via the opening and is against the guiding face at opposite side, and two elastic members are received in recesses on the interior side of the cover pieces having an end thereof being against the fixed jaw and the other end thereof being against the roller for providing the roller a force substantially orientating to the tip end of the fixed jaw, whereby the roller will be stopped by the stop portion and only be driven move along the guiding face.
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