US Patent: 643,522
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Wrench
Improvement in Pipe-Wrenches
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Patentee:
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| George McKercher (exact or similar names) - Jackson, MI |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Jun. 24, 1899 |
| Granted: |
Feb. 13, 1900 |
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Patent Pictures:
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George McKercher Pat. Feb. 13, 1900 |
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Stan Schulz
McKercher Pipe Wrench (IRON AGE) - FLICKR
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Description: |
| Teeth on the "arm" of the movable jaw engage a pin in the frame opening. The jaw is held in adjustment by a spring. The wrench bearing this patent date actually matches McKercher's subsequent May 26, 1903 patent (no. 729,504). |
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