The elevator system comprises a threaded bar disposed in a hoistway in the vertical direction, an elevator car accommodated in the hoistway and guided by guide rails, a nut firmly fixed at the elevator car and adapted to be threadedly engaged with the threaded bar, upper and lower drives rotating the upper and lower end of the threaded bar in the same direction and disposed at upper and lower portions of the hoistway respectively. So a compact and simple elevator system is disclosed which does not require a counterweight, a hoistway rope, a winding drum, safety devices such as an emergency stopping device, a speed governor or the like, and in which the installation space as well as the production costs thereof can be reduced, and which is most suitable for installation in private homes. |