US Patent: 110,914
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| Wrench
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| USPTO Classifications: |
| 81/77 |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Jun. 21, 1870 |
| Granted: |
Jan. 10, 1871 |
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Patent Pictures:
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John Goodin Pat. Jan. 10, 1871 |
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Stan Schulz
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Description: |
| The jaws of this double open-end operate in inverse ratio to each other -- as the jaws at one end open jaws on the other end close. The adjusting screw that connects them has right- and left-hand threads. |
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