US Patent: 329,221
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| Pipe Wrench
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Patentee:
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| Franz A. Schramm (exact or similar names) - Philadelphia, PA |
| USPTO Classifications: |
| 81/99 |
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Patent Dates:
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| Applied: |
Jul. 24, 1885 |
| Granted: |
Oct. 27, 1885 |
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Patent Pictures:
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1 | 2
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Franz A. Schramm patent October 27, 1885 |
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Stan Schulz
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Description: |
| This self-adjusting swinging hook jaw pipe wrench has a coil spring beneath a side cover plate.
A known example has appeared in a collection dispersal auction. |
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