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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.
