Jean Joseph Leon Farcot
of Farcot and Sons, Engine Works, 13 Avenue de la Gare, St. Ouen, France.
Jean Joseph Léon Farcot (23 June 1824 – 19 March 1908), the son of the engineer Marie-Joseph Denis Farcot (1798–1875), was a French inventor, engineer and industrialist. He had many patents to his name, and was one of the pioneers of servomechanism.
After his death in 1908 the factory in Saint-Ouen ran into difficulties. It was sold in 1915, and in 1924 was acquired by André Citroën.
A sectioned model of Joseph Farcot's servo-motor, dated 1868, is on display at the Musée des Arts et Métiers.