"My invention is particularly designed for the stator-core structure of a'high-speed light-weight motor or generator for use in propelling an airplane, in electrical airplane propulsion-apparatus of the type described and claimed in an application of L. A. Kilgore, F. W. Godsey, Jr., F. B. Powers and myself, Serial No. 474,474, filed February 2, 1943, assigned to the Westinghouse Electric 8: Manufa" . . . .