Fritz Huber (engineer)

First World War. Between 1918 and 1921 he developed a single-cylinder hot-bulb engine for stationary work. This engine was later used in the Lanz Bulldog, the first German heavy-oil tractor in mass production.^[1] Because of the First World War, the testing of the concept had to be postponed but, from 1920, the development and construction of the Bulldog got under way. The tractor got its name because of its external resemblance to a bulldog and Fritz Huber is considered the "Father of the Bulldogs". In 1942, Huber retired because of illness. He died on 14 April 1942 in Mannheim.^[2][3]