US Patent: 632,847
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| Wrench
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Patentee:
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| William H. Preston (exact or similar names) - Valley Junction, WI |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Jun. 05, 1899 |
| Granted: |
Sep. 12, 1899 |
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Patent Pictures:
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William H. Preston patent Sept. 12, 1899 |
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Stan Schulz
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Description: |
| Quick adjust with a prominent spring on the back of the movable jaw. Rack teeth on the inner face of the movable jaw engage rack teeth on the main shank.
Corresponding Canadian patent CA-65,166 was granted Dec. 1, 1899. |
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