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  1. What Elisha Otis invented?

    2. A.
    The brake used in modern elevators
    B.
    Jet Engine
    C.
    Turbine
    D.
    Hydraulic Crane

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    Workspace

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    Answer : Option A

    Explanation :

    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.

    Many people think that he invented the elevator, but the truth is, he invented the elevator brake. He also invented the railway safety brake.

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