![]() The Roman Colosseum, completed in AD 80, had roughly 25 elevators that were used for raising animals up to the floor. Sources from later periods mention elevators as cabs on a hemp rope, powered by people or animals. ![]() 212 BC) built his first elevator probably in 236 BC. The earliest known reference to an elevator is in the works of the Roman architect Vitruvius, who reported that Archimedes ( c. History Pre-industrial era Elevator design by the German engineer Konrad Kyeser (1405) Some elevators can also travel horizontally in addition to the usual vertical motion. High-speed elevators are elevators that move faster than regular elevators and are common in skyscrapers and towers. Wheelchair access laws often require elevators in new multistory buildings, especially where wheelchair ramps are not possible. Languages other than English, such as Japanese, may refer to elevators by loanwords based on either elevator or lift. Several types exist, such as the chain and bucket elevator, grain auger screw conveyor using the principle of Archimedes' screw, or the chain and paddles or forks of hay elevators. In agriculture and manufacturing, an elevator is any type of conveyor device used to lift materials in a continuous stream into bins or silos. They are typically powered by electric motors that drive traction cables and counterweight systems such as a hoist, although some pump hydraulic fluid to raise a cylindrical piston like a jack. This elevator to the Alexanderplatz U-Bahn station in Berlin is built with glass walls and doors, exposing the inner workings.Īn elevator ( North American English) or lift ( British English) is a machine that vertically transports people or freight between levels.
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