Steam Operated Wagon with Transmission Gearing with Double Helical Gear Small 320×144 Medium 640×287 Large 1024×460 Download Tiff Original 2400×1077 | (394.8 KB) Description A steam operated wagon with two speed gear. The gears are located at the intermediate shaft, moving the back wheel by a chain drive. The gearing is enclosed to protect it from dust exposure during use. Keywords engine, engines, steam engine, Steam Operated Wagon with Transmission Gearing with Double Helical Gear Galleries Motor Vehicles Source: Encyclopaedia Britannica (11th ed., vol. 18) (New York, NY: The Encyclopaedia Britannica Company, 1910)