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The Antique Wrench Patent Archive

Every grip the nineteenth century took on a nut

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Right-and-left-hand screw

Patent drawing of a combination nut and tap wrench showing a tapered shank with two side arms holding opposing jaws adjusted by right-and-left-hand screws with milled and T-shaped heads, alongside a front and end view of the same mechanism.

IMPROVEMENT IN NUT AND TAP WRENCHESJoseph Goodrich · December 10, 1878

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