American Broach & Machine Company 575 South Mansfield Ypsilanti, Michigan 48197


The factory building at 408 West Washington, now the home of numerous arts groups, including the Performance Network, was from 1919 to 1963 the headquarters of American Broach, a pioneer machine-tool maker. American Broach flourished during the heyday of the U.S. auto industry, supplying broaches (specialized metal-cutting tools) and broaching machines to the Big Three auto companies, their suppliers, and farm machinery manufacturers. At its peak during World War II, American Broach employed 500 people and ran around the clock making equipment for munitions factories. Unlike many of its competitors, it weathered the long decline of the U.S. auto industry, and it still survives, on a smaller scale, in a modern factory on Jackson Road.

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