Whether you were gifted an Atmos clock or inherited one, you likely know a bit about your timepiece’s history. However, you may not know much about how the clock came to be: produced by Jaeger-LeCoultre, this time-keeper has become a staple in offices and homes around the world. Here is a closer look at the history and nature of this special object.

What Makes the Atmos Clock Special?

The magic of the Atmos clock is that it can work continuously without human or electronic intervention. It generates all the energy it needs to operate by leveraging small atmospheric pressure changes. The mainspring that moves the clock is not wound by a human hand; instead, it expands and contracts thanks to the presence of ethyl chloride. When it becomes hot enough, the liquid ethyl chloride vaporizes, creating enough pressure to propel a spring. As it gets cooler, the spring goes back to rest, and the continual back and forth creates enough power to keep the time.

How Did It Come To Be?

The system of perpetual motion, which governs the Atmos clock, had been a subject of tinkering by renowned inventors and scientists dating back to Leonardo Da Vinci. The big breakthrough arrived in 1928 thanks to an engineer by the name of Jean-Léon Reutter. Inspired by the then-widespread 400-Day Anniversary Clock, Reutter used it as a starting point, but then he added his signature contribution: mercury. While it has since been replaced by the safer ethyl chloride, mercury was the original substance that responded to atmospheric pressure in a locked silo known as the bellows. As the Atmos clock became more well-known, it found its way into many great homes of the world, including those of kings and popes.

If you have an Atmos clock in your home or office that needs repairs, contact Tic Toc Shop in Mason, OH. Serving the Indian Hill, West Chester, and Western Hills communities since 1963, the timepiece professionals can repair Atmos, grandfather, and antique clocks. To schedule an in-home appointment, call (513) 398-1474. Learn more about the clock restoration options by visiting their website.