US Patent: 589,228 
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| Wrench
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	        Patentees:
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 | John N. Stephens (exact or similar names) - Crystal Falls, MI |  
| Samuel Prudhomme (exact or similar names) - Crystal Falls, MI |  
 
 
 
 
 
| Manufacturer: |  
| Not known to have been produced |  
 
 
 
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        Patent Dates:
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| Applied: | 
Dec. 17, 1896 | 
 
| Granted: | 
Aug. 31, 1897 | 
 
 
 
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		  Patent Pictures:
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John N. Stephens and Samuel Prudhomme patent August 31, 1897  |  
 
USPTO (New site tip) Google Patents 
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                        Stan Schulz 
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        Description: |  
| The sliding jaw works in a central slot in the main shank. Adjustment is set by teeth on the pivoted lever handle that engage teeth on the handle.  A spring clip that engages a catch in the pivoted lever handle holds the adustment. |  
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