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US Patent: 1,139,392
Improvement in Screw-Drivers
Process For Making Hand Tools
George A. Wood - Southington, CT

USPTO Classifications:
72/340, 72/362, 76/119

Tool Categories:
screwdrivers : screwdriver handles
woodworking tools : chisels


G. E. Wood Tool Co. - Plantsville, CT

Arthur B. Jenkins
A. E. O'Brien

Patent Dates:
Applied: Feb. 25, 1914
Granted: May 11, 1915

Patent Pictures: [ 1 | 2 | 3 ]
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This Patent relates to the construction of tools,Screwdrivers,chisels etc.The blade, bolster and shank being made so any exposed part will always present a smooth and continuous surface.A screwdriver example marked with both 9/19/1916 Patent date1,198,609 as well as the 5/11/1915 patent date, it was also marked 'NO-Bust'.

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