US Patent: 272,408
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| Tap Wrench
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Patentee:
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| Merritt S. Brooks (exact or similar names) - Chester, CT |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Dec. 08, 1882 |
| Granted: |
Feb. 20, 1883 |
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Patent Pictures:
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Merritt S. Brooks patent February 20, 1883 |
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Stan Schulz
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Description: |
| The gripping jaws are hinged and the exterior edges threaded. The corresponding bore of the handle is also threaded. The direction of the threads is such that the jaws are tightened as the tap is driven into the work piece. |
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