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Elisha Graves Otis (August 3, 1811 – April 8, 1861) was an American industrialist and founder of the Otis Elevator Company. [1] In 1853, he invented a safety device that prevents elevators from falling if the hoisting cable fails.
Elisha Otis demonstrated an elevator equipped with a device called a safety brake, which revolutionized the industry completely; David Alter displayed a method to manufacture and purify bromine from salt wells, highly useful in the iron industry; The world's first pedal quadracycle was shown
The company pioneered the development of the "safety elevator", invented by Elisha Otis in 1852, which used a special mechanism that locked the elevator car in place against hoisting rope failure. The Otis Elevator Company was acquired by United Technologies in 1976, but it was spun off as an independent company 44 years later in April 2020 as ...
1852 Elevator brake. An elevator or lift is a vertical transport vehicle that efficiently moves people or goods between floors of a building. In 1852, Elisha Graves Otis invented the first safety brake for elevators which prevents an elevator from spiralling into a free fall between numerous floors inside a building. [119] 1853 Burglar alarm
A water pump supplied a variable level of water pressure to a plunger encased inside a vertical cylinder, allowing the platform, carrying a heavy load, to be raised and lowered. Counterweights and balances were also used to increase lifting power. Elisha Otis demonstrating his safety system, at the New York Crystal Palace, 1853
Coat of Arms of Norton P. Otis. Otis was born in Halifax, Vermont. His father was Elisha Otis, inventor of the safety elevator and a descendant of the Otis family that is counted among the Boston Brahmin families. He attended public schools in Halifax, Albany, Hudson, and Yonkers, New York.
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The most common vehicle uses of master cylinders are in brake and clutch systems.. In brake systems, the operated devices are cylinders inside brake calipers and/or drum brakes; these cylinders may be called wheel cylinders or slave cylinders, and they push the brake pads towards a surface that rotates with the wheel (this surface is typically either a drum or a disc, a.k.a. a rotor) until the ...
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