John Wilton was a patient at a California state mental hospital (Stockton State Hospital). He described himself as an important inventor in petitions for his release sent to a San Joaquin County superior court judge, the governor of California and others (1930-1932). Collection also includes drawings and descriptions of his inventions, which include a reversible rotary propellor for helicopters and ships, a puncture-proof tire and a closing tire valve.
From the description of John Wilton (pseud.) papers, 1930-1932. (University of the Pacific). WorldCat record id: 35191727