US Patent: 20,379
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Improved Screw-Wrench
Reverse double screw nut wrench
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Patentee:
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| George C. Taft (exact or similar names) - Worcester, MA |
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Patent Dates:
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| Applied: |
Oct. 30, 1857 |
| Granted: |
May 25, 1858 |
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Patent Pictures:
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1 | 2
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George C. Taft patent May 25, 1858 ,with 6-inch example |
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Stan Schulz
Vintage Machinery entry for George C. Taft
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Description: |
| Adjusting 'rosette' is threaded to bear against a rack on shank, and has second set of threads engaging threads in the adjustable jaw. In the specifications, Taft distinguishes his patent from Coes' earlier patents 2,054, 9,945 and 11,208, and his own earlier patent 17,609.
This patent, along with 23,725 and 23,798 was "licensed" to Daniel Hawkins, Jr. in 1859. |
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