US Patent: 322,256
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| Wrench
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Patentee:
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| Thomas J. Campbell (exact or similar names) - Westfield, MA |
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Patent Dates:
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| Applied: |
Apr. 20, 1885 |
| Granted: |
Jul. 14, 1885 |
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Patent Pictures:
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Thomas J. Campbell patent July 14, 1885 |
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Stan Schulz
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Description: |
| Quick adjusting jaw with pipe gripping teeth; the inner surface is curved with teeth to engage rack teeth on the main shank.
The owner of a known example says it was made by Eaton, Cole and Burnham. |
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