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The Antique Wrench Patent Archive

Every grip the nineteenth century took on a nut

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San antonio texas patent

Patent drawing of a ratchet wrench showing five figures: a perspective view of the assembled tool with adjustable jaws and knurled screw, two cross-sectional views revealing internal pawls and ratchet teeth, a small circular cross-section, and an enlarged perspective of the head with parts broken away to show the sliding jaw mechanism.

WRENCH.Ernest Frederick Rettberg and Charles Carroll Ellis · February 2, 1886

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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