US Patent: 145,263
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| Pipe-Wrenches
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Patentee:
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| Henry B. Wheatcroft (exact or similar names) - New York, NY |
| USPTO Classifications: |
| 81/99 |
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Patent Dates:
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| Applied: |
Sep. 25, 1873 |
| Granted: |
Dec. 02, 1873 |
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Patent Pictures:
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Henry B. Wheatcroft Pat. Dec. 2, 1873 |
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Stan Schulz
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Description: |
| The patent is a self-adjusting pipe wrench with a swinging hook jaw, and curved gripping face.
A January 29, 1874 "IRON AGE" item indicates J. Austin & Co. produced this wrench. An 1877 hardware supply catalog lists three sizes.
A known example is marked WHEATCROFT PATENT 1873. Another known example is marked WHEATCROFT'S PAT DEC. 2. 1873. They have a leaf spring at the "heel" of the swinging jaw to help keep it in the closed position.
This patent is noted in pat. no. 333,836. |
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