| 摘要 |
A wrench for container closures such as jar caps and bottle caps comprises a supporting plate and an operating plate that is turned relative to the supporting plate by a handle. The operating plate has arcuate cam slots in which ride projecting portions of opposed oppositely moving grippers such that upon rotation of the handle and operating plate, the grippers are drawn toward or moved away from each other. The grippers are of two-part stamped metal construction, one part having stamped clips that ride in slots in the supporting plate to guide the grippers and also having stamped portions that ride in the arcuate cam slots of the operating plate; while the other gripper part is of stepped construction to provide a plurality of flanges for different sized jar caps and has on its inner edge teeth for gripping a bottle cap.
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