GENERAL KNOWLEDGE

Detailed explanation-1: -Elisha Graves Otis didn’t invent the elevator; he invented something perhaps more important – the elevator brake – which made skyscrapers a practical reality. Born near Halifax, Vermont, Otis made several failed attempts at establishing businesses in his early years.

Detailed explanation-2: -Elisha Graves Otis, introduced a safety device in 1853, he made the passenger elevator possible. Otis’ device, demonstrated at the Crystal Palace Exposition in New York, incorporated a clamping arrangement that gripped the guide rails on which the car moved when tension was released from the hoist rope.

Detailed explanation-3: -However, in 1852, Elisha Graves Otis invented a safety brake that revolutionized the vertical transport industry. In the event that an elevator’s hoisting rope broke, a spring would operate pawls on the car, forcing them into position with racks at the sides of the shaft and suspending the car in place.