| US Patent: 167,717 
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| Improvement in Monkey-Wrenches | 
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| Patentee: |  |
 | Richard J. Welles (exact or similar names) - St. Joseph, MO |  
 
 
 
 
| Manufacturer: |  | Not known to have been produced |  
 
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| Patent Dates: |  
| Applied: | May 28, 1875 |  
| Granted: | Sep. 14, 1875 |  
 
USPTO (New site tip)| Patent Pictures: |  |  |  | Richard J. Welles Pat. September 14. 1875 |  Google Patents
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                        Stan Schulz
 
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| Description: |  | The adjusting nut is in line with the main bar of the wrench; the handle has interior threads and can be screwed up to provide a stop-nut for the adjusting nut.  The end of the main bar extends beyond the handle as a screwdriver. |  |