| US Patent: 510,104 
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| Tool For Holding Screw Hooks, etc. Improvements in Bit-Stocks or Tools for Holding Screw-Hooks, or Like Articles
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| Patentee: |  |
 | Joseph Uhl (exact or similar names) - Wurzburg,  Germany |  
 
 
 
 
| Manufacturer: |  | Not known to have been produced |  
 
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| Patent Dates: |  
| Applied: | Jan. 13, 1893 |  
| Granted: | Dec. 05, 1893 |  
 
USPTO (New site tip)| Patent Pictures: |  |  |  | Joseph Uhl patent Decembr 5, 1893 |  Google Patents
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                        Stan Schulz
 
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| Description: |  | The patent is for a bit-stock chuck or socket with a side slot and spring presser plate, along with tools and bits designed to coordinate with that holder.
The tool had received French patent no. 222,893 on July 9, 1892. |  |