“ Together with his genius for mechanical invention Sax seems to have combined a knowledge of self-advertisement, and his name was often prefixed to successful types of instrument for the invention of which he was not primarily responsible. In 1845 he patented his saxhorn and a family of cylinder instruments called saxotrombas. On the 22nd of June 1846 he registered the saxophone. He also effected various improvements in piston instruments, of which the most important was the substitution of a single ascending piston for a number of descending ones. ”