US Patent: 204,386
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| Wrench
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Patentees:
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| Jacob H. Sievers (exact or similar names) - Valparaiso, IN |
| Henry T. Winkler (exact or similar names) - Valparaiso, IN |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Mar. 18, 1878 |
| Granted: |
May 28, 1878 |
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Patent Pictures:
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1 | 2
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Jacob H. Sievers and Henry T. Winkler patent May 28, 1878 |
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Stan Schulz
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Description: |
| The adjustable jaw is a separate piece with a threaded stud. The patent shows pipe and nut jaw pieces. The movable jaw is held by the thumb nut and tapered block. The tapered block cooperates with the thumb nut to tighten the grip of the jaws.
The patent model went through an online auction in 2017. |
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