US Patent: 118,891
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| Improvement in Pipe Wrench
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Patentees:
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| Walter S. Wilcox (exact or similar names) - Hartford, CT |
| James A. Wilcox (exact or similar names) - Rocky Hill, CT |
| USPTO Classifications: |
| 81/99 |
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Patent Dates:
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| Granted: |
Sep. 12, 1871 |
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Patent Pictures:
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Walter S. and James A Wilcox Pat. Sept. 12, 1871 |
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Stan Schulz
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Description: |
| A compression spring keeps the hook jaw engaged with the work piece. The patent is an improvement to James Wilcox's Sept. 3, 1861 (no.33,223) and June 28, 1870 (no. 104,913) patents.
Known examples marked WILCOX'S PAT. Sept. 12, 1871 Mf'd by COLT'S Pt.F.A. Mfg. Co. HARTFORD, CT. actually have the secondary screw adjustment shown in patent no. 104,913. |
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