| US Patent: 147,059 
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| Improvement in Screw Drivers | 
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| Patentee: |  |
 | George P. Loomis (exact or similar names) - Utica, NY |  
 
| USPTO Classifications: |  | 81/32 |  
 
 
 
| Manufacturer: |  | Not known to have been produced |  
 
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| Patent Dates: |  
| Applied: | Oct. 17, 1873 |  
| Granted: | Feb. 03, 1874 |  USPTO (New site tip)
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| Description: |  | Utilizes a disk that engages a double reversible toothed pawl to provide the ratchet feature.
Loomis disclaims Hildreth's patent 112,143 in his application. |  |