Colonel Crompton's Superheated Steam Tractor
A superheated steam tractor built by Colonel Crompton. The boiler, located in the front, heats the water, then the steam enters the piston near the rear wheel. The large rear wheel is connected to the gears by a drive chain.
Encyclopaedia Britannica (11th ed., vol. 18) (New York, NY: The Encyclopaedia Britannica Company, 1910)