US Patent: 902,799
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| Wrench
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Patentee:
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| Ralph S. Barrett (exact or similar names) - Indianapolis, IN |
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Patent Dates:
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| Applied: |
Jul. 17, 1908 |
| Granted: |
Nov. 03, 1908 |
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Patent Pictures:
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Ralph S. Barrett patent Nov. 3, 1908 |
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Stan Schulz
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Description: |
| The patent covers multiple details of the construction. Two prominent features are the adjusting screw with right- and left-hand threads, and the side flanges which protect the handle and adjuster from some incidental damage.
Advertised as the Double-Speed Monkey Wrench. |
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