SJX Watches
Jaeger-LeCoultre Introduces the Atmos Transparente
As crucial to Jaeger-LeCoultre’s identity as the swivelling Reverso wristwatch, the Atmos clock remains a unique and intriguing invention almost a century after its invention – a clock that runs on air. Having been offered in a variety of iterations over the years, including several by industrial designer Marc Newson, the latest is the Atmos Transparente, a clean, modernist reinterpretation of a longstanding model in the line-up. Despite being synonymous with Jaeger-LeCoultre, the Atmos was actually invented by someone else, who was inspired by a much older idea. Clocks wound by changes in atmospheric temperature were invented sometime in the 17th century, but remained largely experimental until French engineer Jean-Léon Reutter invented the Atmos in 1928. His idea was actually an evolution on the 400-day clock, which is regulated by an exceptionally slow pendulum and need only be wound once a year. The magic of air The genius of Reutter’s invention was a sealed metal bellows containing mercury, which expanded and contracted with changes in temperature, thus winding the clock’s mainspring. Despite its novelty, Reutter’s clock met with little commercial success – early Atmos clocks marked “J.L. Reutter” are rare but not especially valuable – leading him to sell the idea to LeCoultre in 1935 (and two years later the company joined forces with Edmond Jaeger to form Jaeger-LeCoultre). The company refined his concept, with the key improvement being the repl...
