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Q.

The details and History of elevators& Who invented elevators?

Tags: details, elevators, history of elevators
Asked by jameel ahmed, 16 Sep '07 06:23 pm
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Answers (3)

 
1.

Primitive elevators were in use as early as the 3rd century BC, operated by human, animal, or water wheel power. From about the middle of the 19th century, power elevators, often steam-operated, were used for conveying materials in factories, mines, and warehouses.

In 1853, American inventor Elisha Otis demonstrated a freight elevator equipped with a safety device to prevent falling in case a supporting cable should break. This increased public confidence in such devices. Otis established a company for manufacturing elevators and patented (1861) a steam elevator. In 1846, Sir William Armstrong introduced the hydraulic crane, and in the early 1870s, hydraulic machines began to replace the steam-powered elevator. The hydraulic elevator is supported by a heavy piston, moving in a cylinder, and operated by the water (or oil) pressure produced by pumps.

Electric elevators came into to use toward the end of the 19th century. The first one was built by the German inventor Werner von S ...more
Answered by anupama kumar, 16 Sep '07 06:27 pm

 
  
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2.

Elisha Graves Otis invented the elevator and also the elevator brake, which was the start of the regular usage of elevators.
HISTORY
The first reference about the elevator is located in the works of the Roman architect Vitruvius, who reported that Archimedes built his first lift or elevator, probably, in 236 B.C. In some literary sources of later historical period lifts were mentioned as cabs, on the hemp rope and powered by hand or by animal's force. It is supposed that lifts of this type were installed in the Sinai monastery of Egypt. In the 17th century the prototypes of elevators were located in the palace buildings of England and France. In 1793 Ivan Kulibin created the elevator with the screw lifting mechanism for the Winter Palace of Saint Petersburg. In 1816 the elevator was established in the main building of sub Moscow village called Arkhangelskoye. In 1823, an "ascending room" made its debut in London.
Henry Waterman, of New York, invented the lift (elevator) in 1850. ...more
Answered by L KINI, 16 Sep '07 06:33 pm

 
  
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3.

Elisha Graves
Answered by mohd yousuf, 18 Sep '07 04:07 pm

 
  
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