US Patent: 504,232
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| Wrench
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Patentee:
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| George McKercher (exact or similar names) - Jonesville, MI |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Jan. 07, 1893 |
| Granted: |
Aug. 29, 1893 |
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Patent Pictures:
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George McKercher patent August 29, 1893 |
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Stan Schulz
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Description: |
| The main feature of the patent is the replaceable gripping surfaces for both jaws.
McKercher continued working on wrench designs, and produced a pipe wrench based on patent nos. 643,522 and 729,504. |
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