Herbert Thacker Herr

Herbert Thacker Herr (born March 19, 1876, Denver, Colo., U.S.—died Dec. 19, 1933, Philadelphia) was a U.S. engineer who made important improvements in steam turbines. After working for various U.S. railroads as a machinist and draftsman for seven years, Herr became a general superintendent of the Norfolk & Western Railway, Roanoke, Va., in 1906. Two years earlier he had invented a braking device to control trains having several locomotives and had devised a mechanism that...