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Tool patents online

Monday 23 June 2003

Some of my cheerful companions on the OldTools mailing list have helped to build the Directory of American Tool and Ma­chinery Patents. This is a searchable database that opens the historical records of the US Patents Office. Here you’ll find patent specifications for great leaps in American tool design (like Justus Traut’s 1888 plane iron lateral adjuster, used ever since by the Stanley company), and for thousands of smaller steps forward.

Patent drawing

Illustrations to Justus Traut’s patent 386,509 for improvements to bench planes

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