lifts or elevators

http://en.wikipedia.org/wiki/Elevator

http://www.pbs.org/wgbh/theymadeamerica/whomade/otis_hi.html

 
http://www.ideafinder.com/history/inventions/elevator.htm
http://www.ideafinder.com/features/smallstep/index.htm

http://www.otis.com/_layouts/ProjectNewsPopup.aspx?ID=22&siteURL=http://www.otis.com/site/in/Pages/default.aspx

http://www.eastindiaelevators.com/bungalow-elevators.html