Sellers, William(1824–1905) manufacturer, engineer; born in Delaware County, Pa. In 1848 he began to manufacture machinists' tools and mill gearing in Providence and in 1886 he formed William Sellers & Co. He developed formulas for machining screw threads and nuts. He was also director of several railroads in the 1860s and 1870s.
The Cambridge Dictionary of American Biography, by John S. Bowman. Copyright © Cambridge University Press 1995. Reproduced with permission.