| US Patent: 523,691 
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| Pipe Wrench | 
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| Patentee: |  |
 | Daniel P. Stanton (exact or similar names) - Warwick, RI |  
 
 
 
 
| Manufacturer: |  | Not known to have been produced |  
 
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| Patent Dates: |  
| Applied: | Jun. 01, 1894 |  
| Granted: | Jul. 31, 1894 |  
 
USPTO (New site tip)| Patent Pictures: |  |  |  | Daniel P. Stanton patent July 31, 1894 |  Google Patents
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                        Stan Schulz
 
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| Description: |  | The pivot for the hook jaw slides in a slot in the main shank; the ring nut serves to clamp the hook jaw against the pipe, and the set screw in the hook jaw limits "crushing" tendency. |  |