US Patent: 483,222
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| Wrench
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Patentee:
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| James C. Johnson (exact or similar names) - Concord Church, WV |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Feb. 18, 1892 |
| Granted: |
Sep. 27, 1892 |
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Patent Pictures:
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James C. Johnson patent September 27, 1892 |
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Stan Schulz
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Description: |
| The adjusting means is a central threaded shaft with a separate rod extending through the handle. It can be slid out to provide additional gripping surface.
The movable jaw slides on parallel rods which serve instead of a central shank to support the head with fixed jaws. |
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