US Patent: 302,842
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Monkey-Wrench
Improved Serrated Pipe-Gripping Jaw
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Patentees:
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| Robert C. Hayton (exact or similar names) - East Saginaw, MI |
| William H. Hayton (exact or similar names) - East Saginaw, MI |
| Samuel H. Heginbottom (exact or similar names) - East Saginaw, MI |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
May 05, 1884 |
| Granted: |
Jul. 29, 1884 |
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Patent Pictures:
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S. H. Heginbottom, R. C. Hayton, and W. H. Hayton patent July 29, 1884 |
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Stan Schulz
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Description: |
| The patent is for the pipe-gripping insert, and the modifications to the fixed jaw that allow it to be slipped on and off the wrench. |
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