US Patent: 608,520 
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| Monkey Wrench
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	        Patentee:
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 | Joseph A. Hensler (exact or similar names) - Akron, CO |  
 
 
 
 
 
| Manufacturer: |  
| Not known to have been produced |  
 
 
 
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        Patent Dates:
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| Applied: | 
Jan. 27, 1898 | 
 
| Granted: | 
Aug. 02, 1898 | 
 
 
 
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		  Patent Pictures:
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Joseph A. Hensler patent August 2, 1898  |  
 
USPTO (New site tip) Google Patents 
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                        Stan Schulz 
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        Description: |  
| The swinging lever handle attached to the movable jaw has a cam to clamp the movable jaw to rack teeth on the main shank.  That lever handle is marked to serve as  rule, and has a screwdriver tip. There is optional provision for a saw blade in the handle. |  
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