John Ernst Worrell Keely

John Ernst Worrell Keely (1827–1898) was an American inventor and self-proclaimed inventor of a revolutionary power generation system in the late 19th century. He is best known for his claims regarding a machine he developed, which he referred to as the "Keely motor." Keely claimed that his machine could harness a form of energy that he described as "vibrational force," and he asserted that it could produce perpetual motion.