US Patent: 253,500
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| Wrench
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Patentees:
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| William Harman Bielefeld (exact or similar names) - Moulton, OH |
| David Clark Hinkle (exact or similar names) - Moulton, OH |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Dec. 29, 1881 |
| Granted: |
Feb. 14, 1882 |
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Patent Pictures:
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W. H. Bielefeld and D.C. Hinkle patent February 14, 1882 |
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Stan Schulz
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Description: |
| This adjustable brace wrench has a coil spring around the adjusting screw. The spring spreads the jaws. |
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