| US Patent: 528,398 
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| Wrench | 
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| Patentee: |  |
 | Julius Locke Stambaugh (exact or similar names) - Standart, TX |  
 
| USPTO Classifications: |  | 81/76 |  
 
 
 
| Manufacturer: |  | Not known to have been produced |  
 
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| Patent Dates: |  
| Applied: | Jul. 16, 1894 |  
| Granted: | Oct. 30, 1894 |  
 
USPTO (New site tip)| Patent Pictures: |  |  |  | Julius Locke Stambaugh patent October 30, 1894 |  Google Patents
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                        Stan Schulz
 
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| Description: |  | Axle nut wrench with a lever-controlled spiral conical spring that would grip the inner surface of the wheel hub.
The operation of the tool is described on pg. 309 of the November 17, 1894 Scientific American. |  |