US Patent: 326,978
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Pipe Wrench Improvement in Pipe-Tongs
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Patentee:
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William Harris (exact or similar names) - Pittsburgh, PA |
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Patent Dates:
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Applied: |
Jul. 13, 1885 |
Granted: |
Sep. 29, 1885 |
Patent Pictures:
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William Harris patent September 29, 1885 |
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Stan Schulz
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Description: |
The gripping bit is a hardened piece held to the end of of the jaw by a collar and tapered drive pin. |
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