US Patent: 420,867
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| Wrench
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Patentee:
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| Roy Dodson (exact or similar names) - St. Louis, MO |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
May 01, 1889 |
| Granted: |
Feb. 04, 1890 |
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Patent Pictures:
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Roy Dodson patent February 4, 1890 |
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Stan Schulz
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Description: |
| The hinged jaw or jaws is closed by the wedge action of a tapered tongue on the inner end of the handle against a cam face on the inner end of the jaw(s). A coil spring provides opening force on the jaw(s). |
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