Could This Manual Elevator Replace Stairs?
The concept device from Rombout Frieling Lab uses human power to move a chair up two vertical poles
This contraption fits one person and climbs up and down floors using a complex system of simple machines. Relying solely on muscle power, it’s an elevator powered by you. The manual elevator concept was designed at the Rombout Frieling Lab. Named the Vertical Walking Machine, the set-up involves a chair suspended on poles. Using a hand-cranked mechanism, it climbs up and down the poles at considerable speed.
Unlike stairs, this machine uses your excersion purely for going up and down, not moving horizontally. Although it does look a lot like advanced gym equipment, it requires only one-tenth of the effort needed when compared to braving a standard staircase.