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The Antique Wrench Patent Archive

Every grip the nineteenth century took on a nut

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No screw shank

Two patent drawings labeled A and B show a wooden-handled pipe wrench with a curved hooked jaw at top, a notched lever-bar sliding through a slot in the hook, and lettered parts f, g, z, i, h, c, d, and a marking the jaw, head, notches, pivot tooth, slot, hook, and lever-bar.

IMPROVEMENT IN PIPE-WRENCHESDaniel E. Eaton · November 5, 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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