US Patent: 34,498
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Nut Wrench
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Patent Dates:
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Granted: |
Feb. 25, 1862 |
Patent Pictures:
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Hollen & Pierce. Pat Feb. 25, 1862 |
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Stan Schulz
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Description: |
The jaws open with a scissors type action. A spring tends to close the jaws. The jaws have opposite facing "steps" so the wrench will catch the corners of square nuts and bolt heads only.
A known metal handle example is marked boldly with the patent date. |
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