US Patent: 79,724
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Wrench
Improvement in Pipe-Tongs
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Patentee:
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| James R. Brown (exact or similar names) - Boston, MA |
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Patent Dates:
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| Granted: |
Jul. 07, 1868 |
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Patent Pictures:
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James R. Brown patent July 7, 1868 |
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Stan Schulz
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Description: |
| Brown describes this tongs as an improvement on his November 30, 1858 patent (No. 22,157). The thumb screw adjusts the jaw opening, and pins keep the two main pieces together without need for a fixed or adjustable pivot block.
This tongs appears in an 1886 catalog from a Chicago hardware supplier. |
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