York - 1831 --- Phineas Davis was the inventor who designed and built the first practical American coal-burning railroad locomotive. His design, 'York' was a 0-4-0, vertical boiler steam locomotive and featured two vertical cylinders that drove vertical main rods. These in turn connected to horizontal side rods that powered the wheels. The first locomotive to burn coal, York was also the first with coupled wheels and a double instead of a single pair of drivers. It weighed 3.5 short tons (3,200 kg) and attained velocity by gearing, using a spur wheel and pinion on one of the axles of the wheels. Davis' upright "cheese boiler" consisted of a water jacket surrounding a central furnace, and a shallow drum suspended above the grates. The drum, when viewed through the fire door, was thought to resemble a cheese, thus giving the entire assembly its name. This replica of the original loco is kept at Chicago Museum of Science & Industries. Photographed by Abhi in April 2013.