The Clock self-winds and keeps time on temperature change, perpetually spinning the pendulum.
First invented in 1928 by Swiss Jean-Leon Reutter and Jaeger Le Coultre.
But it took the Jaeger-Le Coultre workshop a few more years to convert this idea into a technical form that could be patented.
And to perfect it to such a degree that the Atmos practically achieved perpetual motion. The technical principle is a beguiling one: inside a hermetically sealed capsule is a mixture of gas and liquid (ethyl chloride) which expands as the temperature rises and contracts as it falls, making the capsule move like a concertina.
The ATMOS was called "THE PERPETUAL MOTION CLOCK." Although every mechanical device and machinery eventually wears out, the Atmos is as close as it comes to an everlasting machine.
Its power source is a hermetically sealed capsule containing a mixture of gas and liquid ethyl chloride, which expands into an expansion chamber as the temperature rises, compressing a spiral spring.This are bevelled so that the door may tilt and function.Sometimes owners think these are chips in the glass but they are made that way.This is a stunning piece for any collector or Atmos enthusiast.The high quality Swiss manufacture is unparalleled.