Daniel Halladay (born November 24, 1826 in Marlboro, Vermont – March 1, 1916 in Santa Ana, California was an American engineer, inventor and businessman, best known for his innovative 1854 self-regulating farm wind pump at Ellington, Connecticut. Versions of this windmill became an iconic part of the rural landscape in the United States, Argentina, Canada, New Zealand, and South Africa - mostly because of the role they play in a natural source of electricity. His invention of the windmill was a crucial key to the old steam trains as back then, they were mainly powered by water, so the water pumping mechanism (the windmill) helped the advance of trains.
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