A Perpetuum Mobile Railroad

Perpetuum mobile railroad

The March 1925 issue of Science and Invention featured this Aerial Railroad. By a combination of inclined ramps and overhead suspension from cleverly curved tracks the “trolley car” passenger vehicle could go forever without power. It falls while suspended in the air from the downward inclined track, swinging forward as it does. When it contacts the lower tracks its momentum carries it up the inclined track until the whole process repeats. Source.