Come and learn how a traction elevator works! We'll also explore the history and different types of elevators. Elevators have been around for almost 2000 years. In the 1850s, Elisha Otis invented a ...

Hydraulic elevators operate using a piston that pushes the elevator upwards from below. Trump says framework deal on Greenland will last 'forever' and 'gets everything we wanted' Eight myths about ...