US Patent: 218,106
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| Bung-Bush Wrench
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Patentee:
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| David Ackerman (exact or similar names) - Chicago, IL |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Dec. 12, 1878 |
| Granted: |
Aug. 05, 1879 |
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Patent Pictures:
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David Ackerman patent August 5, 1879 |
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Stan Schulz
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Description: |
| The wrench is in two halves that are loosely connected, with a wedge-shaped expansion feature at the top.
This is simpler than Ackerman's March 11, 1879 patent (no. 213,026), and also simpler than F. P. Bump's April 29, 1879 patent (no. 214,755). |
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