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The Antique Wrench Patent Archive

Every grip the nineteenth century took on a nut

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Worm-nut

Patent drawing of a pipe wrench with a long toothed handle bar, a sliding two-part box, and a swinging trunnion-mounted grip jaw gripping a pipe, with additional cross-section and detail views of the box and jaw parts.

PIPE-WRENCHOramel Charles Stanley · July 12, 1898

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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