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Elisha Otis.
Either for elevator and on for escalator, since you can't be in it.
Elisha invented the elevator brakes so people could safely ride elevators.
Of the maximum weight capacity of an elevator in a skyscraper (tensile strength of the elevator cable). you don't want it to snap when people are on it and send them hurtling hundreds of meters downwards.
The invention of the elevator and the invention of steel.
The cast of Elevator Ride - 2011 includes: John Venable as Cecil Laurel Whitsett as Beth
The invention of the elevator and the invention of steel
(1) Steel and (2) the Elevator. Those are the most significant.
The lift (or elevator).
The elevator. Without the elevator to allow people to easily move upwards, advances in structure elements like steel and concrete would have been useless. Indeed, it was possible to build very tall structures from wood or bricks. Otis and his elevator made tall building practical.
Hot Mess - 2009 Elevator Ride 2-2 was released on: USA: 15 October 2010
The cast of The Longest Elevator Ride in the World - 2011 includes: Ethan Rush as Ned Alison Titulaer as The Girl from his Building