| US Patent: 431,236 
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| Monkey Wrench | 
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| Patentee: |  |
 | Richard Wayland Smith (exact or similar names) - Kenwood, NY |  
 
 
 
 
| Manufacturer: |  | Not known to have been produced |  
 
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| Patent Dates: |  
| Applied: | Mar. 05, 1890 |  
| Granted: | Jul. 01, 1890 |  
 
USPTO (New site tip)| Patent Pictures: |  |  |  | Richard Wayland Smith patent July 1, 1890 |  Google Patents
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                        Stan Schulz
 
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| Description: |  | The adjustable jaw is hinged to the shank of the stationary jaw; the frame holding the movable jaw and adjusting nut is pressed against the stationary jaw and shank by a heavy leaf spring.  This would allow for a kind of ratchet action as the jaws would open on "reverse" motion. |  |