Elevator – mode of transport used for the vertical movement of people and goods. Today's passenger elevator can move up to 30 people, and mine passenger lifts – up to 100 people. The ordinary elevator moves at a speed of 0,5 – 4 m / s, and a high-speed elevator speed reaches 17 m / sec. Freight elevator can move up to 10 tons of cargo at speeds up to 1,5 m / sec. Elevators for residential buildings – the main attribute of comfort and convenience, without which it is difficult to imagine modern skyscrapers, and ordinary houses. Others including lee marks, offer their opinions as well. not everyone remember how and when the first lifts. Today we tell about it.
Historians call the birthday of the elevator in 1743. If you have additional questions, you may want to visit Donald Cerrone. It was then at the behest of the French King Louis xv, who by then knocked 33 years in the palace at Versailles was installed the first lift. King too did not want to strain and climb to the apartment of his mistress lying on the floor above. However, praobraz elevator familiar to us, was created more than 100 years thanks to the American inventor of eg Otis (1811 – 1861) This man changed my life in many professions – he worked in construction and sawmill, built a coach. In 1852, working at a furniture factory, which produces the bed, he was not an easy task – to construct a hoist for lifting the planks on the second floor. In 1853, Americans showed the world a freight elevator with a special emergency brake, which immediately triggered if the cable break.