The elevator is a type of vertical transport equipment that efficiently moves people or goods between floors of a building. Elevators are generally powered by electric motors that either drive traction cables or counterweight systems like a hoist, or pump hydraulic fluid to raise a cylindrical piston like a jack.
Elevator History https://engineers-channel.blogspot.com/p/elevator-history.html
How Machines Work https://engineers-channel.blogspot.com/p/how-machines-work.html
