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April 1, 2024
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Jacob
⟶ mise à jour avec succès 2 oct. 2017 ⟶
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Les événements
Harry Waterman invented the elevator
Elisha Otis invented and patented a safety brake for the elevator
Otis demonstrated his safety brake elevator that was steamed powered
First skyscraper in Chicago with Otis elevator made the building possible
Otis developed the gear-less traction system involving cables and electricity that would become the most common way to run an elevator.
Otis invented an elevator that would be todays design of an elevator
57 of otis's elevators were installed in the tallest buildings