“ The profits of two years of this work enabled him to continue his researches and experiments. In 1835, having perfected a six-barrelled rotating breech, he visited Europe, and patented his inventions in London and Paris, securing the American right on his return; and the same year he founded at Paterson, New Jersey, the Patent Arms Company, for the manufacture of his revolvers only. As early as 1837 revolvers were successfully used by United States troops, under Lieut.-Colonel William S. Harney, in fighting against the Seminole Indians in Florida. ”