US Patent: 220,076
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Wrench
Improved Universal Wrench
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Patentee:
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| Andrew Jackson (exact or similar names) - San Francisco, CA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Jun. 21, 1879 |
| Granted: |
Sep. 30, 1879 |
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Patent Pictures:
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Andrew Jackson patent September 30, 1879 |
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Stan Schulz
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Description: |
| The unusual jaw shapes, tension spring attachment to the movable jaw, and location of the adjustment means make this a unique design. The jaw shapes would allow this to grip pipe and a variety of polygonal shaped nuts. |
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