Sliding door system

The fascination of a mechanical system that works by gravity!
Here everything is running without apparent secrets, a steel cable is responsible for the transmission of movements, but combines a pendulum that is in charge of the automatic closing of the door.
The movement of the door opening produce the lifting of an weight.
Releasing the door, it starts a movement of closing with a soft final damp.
The whole process involves the rise of a pendulum and its subsequent fall dragging the door and creating a line of mechanical movements that it is
impossible not impress the observer!
Truly a timeless and eternal system.
The door opens and closes manually operated by gravity.