US Patent: 9,030X
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Wrench
Improvement in screw wrench
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Patent Dates:
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| Granted: |
Aug. 17, 1835 |
| Reissue Information: |
| Reissued as RX-38 (May 17, 1842) |
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Patent Pictures:
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Solyman Merrick patent August 17, 1835, Reissue May 1842 and August, 1849. Renewed 1851 . 12 inch example |
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Description: |
| The internally threaded adjusting nut engages thread cut on the shank of the wrench. The adjusting nut attaches to the moveable jaw with a strap. This is the first U.S. Screw adjust wrench patent. Reissued 17 May 1842; Extended 7 years from 17 August 1849 ; Renewed 2nd time 25 November 1851.
The wrench based on this patent and subsequent modifications was produced into the mid-20th Century. |
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