US Patent: 364,765
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Wrench
Improvements in Screw-Wrenches
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Patentee:
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| Rufus B. Marks (exact or similar names) - Newark, NJ |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Sep. 30, 1886 |
| Granted: |
Jun. 14, 1887 |
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Patent Pictures:
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Rufus B. Marks patent June 14, 1887 |
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Stan Schulz
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Description: |
| The shank is trapezoidal with threads cut on the corners. The adjusting nut is threaded, with provisions for ability to slide freely at some point in its rotation. A secondary nut or abutment collar provides additional adjustment capability. |
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