US Patent: 39,900
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Wrench
Improvement in Screw-Wrenches
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Patentee:
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| Thomas H. Dodge (exact or similar names) - Washington, DC |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Granted: |
Sep. 15, 1863 |
| Antedated: |
Apr. 08, 1863 |
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Patent Pictures:
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Thomas H. Dodge Pat, Apr. 8, 1863 |
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Stan Schulz
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Description: |
| A large "rosette" with internal gears drives a geared version of a Coes adjusting screw on a monkey wrench. The patent is claimed to enable the wrench to be adjusted by dragging the adjusting "rosette" across an "unyielding surface." |
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