Discussion on “direct-current motors for coal and ore bridges” (Mclain), Detroit, Mich., June 23, 1914. (see proceedings for June, 1914)

D. B. Rushmore: There is a fairly sharp dividing line which distinguishes motor application work from other fields of engineering, except railway work, which must be considered as a specific field in itself. The field of motor application is very largely that of driving machines which either perform work themselves or are very actively connected with the work performed, and machines engaged in conveying material.