US Patent: 257,414
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| Wrench For Bung Bushes
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Patentee:
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| Charles Trapp (exact or similar names) - Port Washington, WI |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Sep. 27, 1881 |
| Granted: |
May 02, 1882 |
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Patent Pictures:
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Charles Trapp patent May 2, 1882 |
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Stan Schulz
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Description: |
| The wrench has a central tapering core with recesses holding "loose eccentricities" with sharp edges to grip the inner surfaces of barrel bungs. |
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