elevator
Mechanical apparatus with a car that provides automated movement of people between the levels of a building.
car guide rail 
Metal bar along which the car slides, preventing it from rocking from side to side.
speed governor 
Mechanism that triggers the car safety in the event the car moves too quickly.
car safety 
Security device that stops the elevator car in the event that it moves too fast or the hoisting rope is severed or damaged.
counterweight 
Mobile unit comprised of a heavy mass whose weight counterbalances that of the elevator car and its passengers.
counterweight guide rail 
Metal bar along which the counterweight slides; it prevents the counterweight from rocking from side to side.
limit switch 
Switch that allows the elevator car to stop at every floor.
governor tension sheave 
Device that serves to keep the speed governor cable taut.
buffer 
Piece of equipment that brings the elevator car to a stop and absorbs the impact.
elevator car 
The elevator’s mobile compartment, designed to transport passengers.
hoisting rope 
Cable that allows the vertical movement of the elevator car.
winch 
Mechanism that moves the car by means of the hoisting rope.