The appearance of an easy-to-ride tricycle in 1876. The first tricycle mass-produced by Coventry Lever, it was equipped with a Lever gear built by James Starley. The three-wheeled Salvo built by Starley, incorporated innovations such as a lighter frame, spoke wheels, and a highly advanced chain drive. It also placed emphasis on performance. In particular, the use of a balance gear or double-drive gear enabled smoother turning on curves because the outer wheel in respect to the curve was able to spin faster than the inner wheel. It was also equipped with a lamp for nighttime rides, and became a popular vehicle because it was more convenient and accessible than a horse carriage.