US Patent: 513,354 
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| Monkey Wrench
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	        Patentee:
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 | Edward C. Wells (exact or similar names) - Boston, MA |  
 
 
 
 
 
| Manufacturer: |  
| Not known to have been produced |  
 
 
 
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        Patent Dates:
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| Applied: | 
Jun. 23, 1893 | 
 
| Granted: | 
Jan. 23, 1894 | 
 
 
 
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		  Patent Pictures:
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Edward C. Wells patent January 23, 1894  |  
 
USPTO (New site tip) Google Patents 
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                        Stan Schulz 
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        Description: |  
| Screw adjust nut wrench, with a spring at the base of the movable jaw which allows the movable jaw to disengage from the adjusting screw for rapid adjustment. |  
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