| US Patent: 1,234,190 
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| Wrench | 
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| Patentee: |  |
 | Edwin Macneir (exact or similar names) - Philadelphia, PA |  
 
 
 
 
| Manufacturer: |  | Not known to have been produced |  
 
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| Patent Dates: |  
| Applied: | Oct. 24, 1914 |  
| Granted: | Jul. 24, 1917 |  
 
USPTO (New site tip)| Patent Pictures: |  |  |  | Edwin Macneir patent July 24, 1917 |  Google Patents
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                        Stan Schulz
 
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| Description: |  | Another take on an internal mechanism for the head of a self-adjusting nut wrench. |  |