Elevators began as simple rope or chain
hoists. In the past elevator drive mechanisms were powered by steam
and water hydraulic pistons. In 1823, an "ascending room"
made its debut in London. In 1853, Elisha Otis introduced the safety
elevator, which prevented the fall of the cab if the cable broke.On
March 23, 1857 the first Otis elevator was installed at 488 Broadway
in New York City.