What materials did Elisha Otis use?

Answer 1

Elisha Otis primarily used steel and wood in his inventions, particularly for his safety elevator system. He designed a mechanism that utilized a series of pulleys and a braking system made from these durable materials to prevent the elevator from falling if the cable broke. This innovation revolutionized vertical transportation and made skyscrapers feasible. Otis's use of robust materials ensured reliability and safety in his elevator designs.