US Patent: 56,166
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| Improved Tool
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Patentee:
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| Byron Boardman (exact or similar names) - Norwich, CT |
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Patent Dates:
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| Granted: |
Jul. 10, 1866 |
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Patent Pictures:
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Byron Boardman patent July 10, 1866 |
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Stan Schulz
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Description: |
| Boardman's improvements to A.W. Park's combination tool patented May 30, 1865 (48,027) include a pipe gripping insert in the jaw, a retaining pin for the adjusting knurl, a square socket in the end of the handle, and a hardened screwdriver tip. Few of the extant examples have the knurl retaining pin feature. |
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