| US Patent: 55,739 
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| Wrench Improvement in Screw-Wrenches
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| Patentee: |  |
 | George C. Taft (exact or similar names) - Worcester, MA |  
 
 
 
 
| Manufacturer: |  | Not known to have been produced |  
 
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| Patent Dates: |  
| Granted: | Jun. 19, 1866 |  
 
USPTO (New site tip)| Patent Pictures: |  |  |  | George C. Taft patent June 19, 1866 |  Google Patents
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                        Stan Schulz
 
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| Description: |  | The patent is for the internal configuration of an adjusting cylinder nut, and its connection to the moveable jaw. 
The initial visual comparison is to Taft's Oct 16, 1860 patent no. 30,431; that patent had a "double screw" adjusting nut whereas this patent has a single screw engaging threads on the shank. |  |