US Patent: 126,425
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| Improvement in Hand-Clamps
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Patentee:
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| Stephen L. Thompson (exact or similar names) - Lowell, MA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Granted: |
May 07, 1872 |
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Patent Pictures:
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Stephen L. Thompson Pat. May 7, 1872 |
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Stan Schulz
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Description: |
| The patent is a wooden hand-screw type clamp with a wrench or crank to provide extra force on one screw, and a metal cocollar to protect that screw. |
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