| US Patent: 979,939 
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| Spiral tool-driver | 
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| Patentees: |  
 | Thomas J. Fegley (exact or similar names) - Philadelphia, PA |  | George O. Leopold (exact or similar names) - Philadelphia, PA |  
 
 
 
 
 
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| Patent Dates: |  
| Applied: | May 22, 1909 |  
| Granted: | Dec. 27, 1910 |  
 
USPTO (New site tip)| Patent Pictures:
	      
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                        Steve Gosselin
 "Vintage Machinery" entry for North Bros. Manufacturing Co.
 
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| Description: |  | The patent drawing shows the #75 Yankee "push brace". Fegley and Leopold's goal was to make a drill to be "....used in places difficult in access but which can be reached by a comparatively long tool, such as in car work, cabinet work, etc....." They also positioned the ratchet selector at the top where the operators hands were. And they installed a heavier, three jaw chuck. In the 1912 catalog they explained why they called this tool a brace. "It excels a bit brace in its greater rapidity and convenience in the lighter work ordinarily done by brace." See Patent#1022311 for improvements |  |