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The Antique Wrench Patent Archive

Every grip the nineteenth century took on a nut

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Socket wrench nut-holder

Patent drawing of a railroad track wrench showing a hooked claw clamping over a rail joint, connected by a long stem with a universal joint to a socket wrench and ratchet handle.

IMPROVEMENT IN COMBINED CLAMPS AND WRENCHES.Ephraim Maguire · November 26, 1872

United States patent drawings and specifications are works of the U.S. government and are in the public domain — they were never copyrighted. Download them, print them, frame them. Our commentary and descriptions are © 2026 The Antique Wrench Patent Archive.

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