| US Patent: 207,172 
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| Tap Wrench | 
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| Patentee: |  |
 | Charles H. Fowler (exact or similar names) - Boston, MA |  
 
 
 
 
| Manufacturer: |  | Not known to have been produced |  
 
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| Patent Dates: |  
| Applied: | Apr. 11, 1878 |  
| Granted: | Aug. 20, 1878 |  
 
USPTO (New site tip)| Patent Pictures: |  |  |  | Charles H. Fowler patent August 20, 1878 |  Google Patents
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                        Stan Schulz
 
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| Description: |  | The gripping die is round, with a "V" notch in the end, and fits down the same bore as the adjusting screw. |  |