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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.
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
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.
In 1852, Elisha Otis introduced the safety elevator, which prevented the fall of the cab if the cable broke. He demonstrated it at the New York exposition in the Crystal Palace in a dramatic, death-defying presentation in 1854, [ 10 ] [ 11 ] and the first such passenger elevator was installed at 488 Broadway in New York City on 23 March 1857.
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 ...
The concept of brake pads or disc brakes as an alternative to drum brakes had been around at least as early as a patent by F. W. Lanchester in 1902. [2] However, due to high cost and inefficiencies compared to drum brakes they were not commonly implemented until after World War II. [3]
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