Elevator
device · 1852 · Industrial Revolution
A lift with a car; Otis’s safety brake made it safe.
What it is made of
- Elevator safety brake — has part. Otis’s safety brakes.
- Pulley — has part. The rope runs over a pulley.
- Electric motor — has part. An electric motor turns the winch.
- Wire rope — has part. The car hangs on cables.
Principles and materials it uses
- Counterweight — uses. A counterweight balances the car.
- Wood — is made of. The car of Otis’s lift is wooden.
- Cast iron — is made of. The guide rails are iron.
Where it is used
- Skyscraper — is part of. A skyscraper is impossible without a lift.
- Eiffel Tower — is part of. Lifts.
- Panel building — is part of. Lifts.