Elevator 02
Elevator 02 : History: Elevator design by the German engineerKonrad Kyeser (1405) The first reference to an elevator is in the works of the Roman architect Vitruvius, who reported that Archimedes (c. 287 BC - c. 212 BC) built his first elevator probably in 236 BC. In some literary sources of later historical periods, elevators were mentioned as cabs on a hemp rope and powered by hand or by animals. It is supposed that elevators of this type were installed in the Sinai monastery of Egypt. In 1000, the Book of Secrets by al-Muradi in Islamic Spain described the use of an elevator-like lifting device, in order to raise a large battering ram to destroy a fortress. In the 17th century the prototypes of elevators were located in the palace buildings of England and France. Ancient and medieval elevators used drive systems based on hoists or winders. The invention of a system based on the screw drive was perhaps the most important step in elevator technology since ancient times, leading to the creation of modern passenger elevators. The first screw drive elevator was built by Ivan Kulibin and installed in Winter Palace in 1793. Several years later another of Kulibin's elevators was installed in Arkhangelskoye nearMoscow. In 1823, an "ascending room" made its debut in London. Starting in the coal mines, by the mid-19th century elevators were operated with steam power and were used for moving goods in bulk in mines and factories In 1823 in London, an "ascending room" was built and operated by two architects, Burton and Hormer. It was designed as a tourist attraction to elevate paying customers to a panoramic view of the city. The "Teagle" - a belt-driven elevator with a counterweight was developed in 1835 by Frost and Stutt in England
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