Elevator

—A lift or hoist consisting of a platform or cage, working between vertical guides, operated either through ropes driven by steam, electricity, compre ed air, or water power, or by the direct thrust or lift of a hydraulic plunger. An electric elevator is usually provided with a switch and rheostat by which it is started, stopped and reversed. Pulling the rope downwards as far as po ible causes the car to ascend. A slight pull in the opposite direction opens the switch, allows the brake to apply and the car comes to a stop. Pulling the rope upwards as far as po ible causes the ear to descend. —forwards or backwards.