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Jaeger LeCoultre, Atmos Clock, Nickel Plated, Manufactured 1950

About the Item

Atmos II from Jaeger LeCoultre Switzerland Nickel-plated brass Year of manufacture 1950 Dimensions: H x W x D: 23.5 x 21 x 16.5 cm Description: Atmos II in a new nickel-plated case. Removable glass bell, blued screws, rotating pendulum with small round recesses. Regulation by means of a slide between movement and pressure box. Dial ring with horizontal 3 and horizontal 9. Serial number: 32653 Year of manufacture: 1950 A second number is engraved under the serial number: 11908 Condition: The clock has been freshly overhauled and runs absolutely reliably and accurately. The case and movement have been newly nickel-plated and are in mint condition. Interesting facts: In 1927, the young engineer Jean-Léon Reutter presented the prototype of the Atmos clock he had developed. The response in the press was great and so he signed a contract with the Compagnie générale de radiologie, which built and sold the "Atmos I" from 1930 under Reutter's direction. As there were repeated problems with the clocks, the movements were manufactured by Le Coultre et Cie in Switzerland from 1933 and in 1935 the production rights for the Atmos clock were transferred to Ets. Ed. Jaeger in 1935. The focus was on developing a simpler and more robust motor, and from 1938 the era of the Atmos by Jaeger-LeCoultre began. The "clock that lives from the air" uses the "breathing movements" of a gas-filled bellows caused by temperature fluctuations to wind the movement. The movement of the clock stands out with its cylindrical box on the back. Inside, a bellows-shaped expansion chamber contains chloroethyl, a gas that expands particularly strongly between 10 °C and 27 °C. A temperature difference of just one degree Celsius winds the watch for 48 hours. This interesting winding mechanism is complemented by an exquisite movement of extreme precision with a heavy torsion pendulum (rotating pendulum). The condition for the accuracy of the clock is a stable and vibration-free installation. Also worth mentioning is the absolute environmental friendliness of the clock, which, despite its unlimited running time, does not require a battery or any other electrical drive. For decades, the Atmos has been Switzerland's official state gift to prominent visitors, e.g. politicians from abroad. [Source: Jean Lebet - Living on Air / Jürgen Abeler - Ullstein Uhrenbuch]
  • Creator:
    Jaeger-LeCoultre (Manufacturer)
  • Dimensions:
    Height: 9.06 in (23 cm)Width: 8.27 in (21 cm)Depth: 6.3 in (16 cm)
  • Style:
    Mid-Century Modern (Of the Period)
  • Materials and Techniques:
  • Place of Origin:
  • Period:
  • Date of Manufacture:
    1950
  • Condition:
    Refinished. The clock has been freshly overhauled and runs absolutely reliably and accurately.
  • Seller Location:
    Greven, DE
  • Reference Number:
    1stDibs: LU5419238420972
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