The “James Toleman” was designed by Frederick Charles Winby to test the installation of a long firebox between uncoupled axles. Each axle had its own cylinders, with the inner cylinders driving the first driving axle. Thus lone coupling rods could be avoided. The boiler was oval in cross-section to be fitted between large wheels. After attending the Columbian Exposition, it was given to the Milwaukee Road for trials. However, it quickly became apparent that it repeatedly had too little steam and parts regularly broke. Even a lengthy visit by Winby to the USA could not solve the problems that had arisen. 