| US Patent: 56,838 
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| Hammer | 
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| USPTO Classifications: |  | 81/23 |  
 
 
 
| Manufacturer: |  | Not known to have been produced |  
 
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| Patent Dates: |  
| Granted: | Jul. 31, 1866 |  
 
USPTO (New site tip)| Patent Pictures: |  |  |  | W. G. Ward patent July 31, 1866 |  Google Patents
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                        Stan Schulz
 
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| Description: |  | A groove and spring on the underside of the hammer head hold a nail.  The patent drawing shows the hammer being used by a one-armed person. |  |