| US Patent: 168,741 
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| Improvement in drill-stocks | 
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| Patentee: |  |
 | Jonathan Hammond (exact or similar names) - Belleville, IN |  
 
| USPTO Classifications: |  | 81/34 |  
 
 
 
| Manufacturer: |  | Not known to have been produced |  
 
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| Patent Dates: |  
| Applied: | Jun. 26, 1875 |  
| Granted: | Oct. 11, 1875 |  
 
USPTO (New site tip)| Patent Pictures: |  |  |  | Hammond 168,741 |  Google Patents
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                        Steve Gosselin (GL)
 
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| Description: |  | An eggbeater style drill with the pinion gear housed in the cast frame. |  |