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US Patent: 979,939
Spiral tool-driver
Patentees:
Thomas J. Fegley (exact or similar names) - Philadelphia, PA
George O. Leopold (exact or similar names) - Philadelphia, PA

USPTO Classifications:
74/127

Tool Categories:
woodworking tools : hand drills

Assignees:
North Brothers Manufacturing Co. - Philadelphia, PA

Manufacturer:
North Brothers Manufacturing Co. - Philadelphia, PA

Witnesses:
William E. Shupe
William A. Barr

Patent Dates:
Applied: May 22, 1909
Granted: Dec. 27, 1910

Patent Pictures: [ 1 | 2 ]
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"Vintage Machinery" entry for North Bros. Manufacturing Co.
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

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