Learn about Atmos Clock

The Atmos clock is 'The Clock That Runs on Air'.

For centuries scientists had experimented with the idea of perpetual motion and watchmakers and clockmakers yearned for a timekeeping device that would work without the need of manual winding; in short a timepiece that would continue to run under its own power.

By the 1920's the closest they had come to this was the 400 day clock. In the late 1920s, Jean-Leon Reutter, a young Paris engineer produced a clock with a timekeeping mechanism designed specifically to consume the smallest possible amount of power to keep the clock running satisfactorily.

As well as changes to the mechanism, Reutter's clock included a mercury and gas filled bellows that would react to the most sensitive changes in temperature and atmospheric conditions, and in so doing, created a gentle rocking motion that gave power to the clock when needed.

The result of Reutter's achievement was an ingenious new clock that could run dependently and continuously, and so incredibly sensitive that it could be rewound by the slightest fluctuations in the atmosphere or by the slightest changes in temperature, hence the name 'Atmos Clock'. more...
These items are not for sale and the descriptions, images and prices are for reference purposes only.

A Jaeger le Coultre Atmos clock, Swiss, 20th century, with original case and papers, 22.5 cm high

A gilt brass Jaeger Le Coultre Atmos clock, gilt brass movement. Round gilt dial with silver painted outer rim, applied gilt hour markers and numeral quarter hour markers. Dial and movement signed. Engraving to the front of base., 23 x 19 x 14 cm

A Jaeger Le Coultre brass cased 'Atmos' clock, circa 1960 the gilt-finished movement wound by changes in air pressure, the 11 cm dial with Arabic and dagger numerals centred by a stylised compass, the case decorated with a star chart to front with famous a

An Atmos Jaeger Lecoultre mantel clock in working condition. 23.5 cm high, 21 cm long, 18 cm depth

A modern Atmos 'Classique' Goldtone Jaeger-LeCoultre perpetual clock, traditional gold plated brass case with glass panels to all sides and top, spirit level to base of case, adjustable feet, the chapter ring with Roman numerals, 15 jewels, open worked gol

An Jaeger-LeCoultre 'Atmos' mantel clock, the four-glass case enclosing the patent perpetual movement, the annular dial with Roman numerals at the quarters and spear point batons indicating the other hours. 19 cm x 14 cm x 23.5 cm

A Swiss Jaeger-Le Coultre Atmos clock in gilt brass and glass case. Height 23 cm

A Jaeger LeCoultre 'Marina' Atmos clock. Manufactured Switzerland, with acrylic and brass case, with original makers box. Note: AF, movement not working. Height 23 cm

A Jaeger LeCoultre Atmos clock. Manufactured Switzerland, serial #461363, with glass panel, polished brass case, white chapter ring, and polished brass movement, with original makers box. Height 22 cm

Jaeger-LeCoultre Atmos clock, movement 237086, gilt finished case and movement, 15 jewel white chapter ring, brass hands, case, dial and movement signed. Height 22 cm

A J'ger LeCoultre 'Marina' Atmos clock, manufactured Switzerland, with aquarium theme Lucite panels, white enamel, dial and polished brass case. Height 23 cm

A J'ger LeCoultre Atmos clock, manufactured Switzerland, serial #82247, with polished brass case and chapter ring, glass panel case. Height 22 cm

A 1960's J'ger-Le-Coultre 'Atmos' mantel clock, the gilt brass framed glazed cabinet of rectangular form, the cream finished chapter ring with Arabic numerals to the quarters, the gilded perpetual movement run by changes in temperature and atmospheric pres

J'ger Le Coultre Atmos mantel clock in original fitted case

J'ger Lecoultre Atmos clock (AF) c.1970, with fitted manufacturers case. Height 23.5 cm

A Swiss gilt-brass Atmos clock fully glazed case with hinged front door, applied gilt-brass chapters and gilt-brass hands, the front plate stamped 'J'ger LeCoultre, Atmos, Swiss made' 23 cm high

A Swiss gilt-brass Atmos clock fully glazed case with hinged front door and fish decorated perspex panels to the front and sides, applied gilt-brass chapters and hands, the front plate stamped 'J'ger LeCoultre, Swiss made' 24 cm high

J'ger-Le-Coultre Atmos clock with map detailed design, stamped to base Le Coultre & Cie Swiss metal caliber 526/5, c1950s, some wear to brass. Dimensions 22 x 12 x 16.5 cm

J'ger-Le-court Atmos clock with fish and underwater themed decoration in a fitted case. Height not including case - 23 cm

A J'ger-Le Coultre Atmos classic clock, circa 1970, the brass framed five glass body exposing the internal mechanism within, centred by a white enamelled chapter ring and Arabic gilt numerals, includes original service manual, 22 cm high.

A J'ger le Coultre Atmos clock, mid 20th century, the brass and glass cased clock with circular painted chapter ring with Arabic numerals. in original box with papers. Height 26 cm

J'ger Le-Coultre Atmos 5 classic mantle clock. 'The Clock That Runs on Air', the only clock of its kind in the world, the constant changes in the temperature of the air are enough to keep it permanently wound, with original manuals and in stunning conditio

A J'ger Le Coultre Atmos clock with Arabic and baton numeral dial mounted in a brass bound case with Chinoiserie panels, 23 cm high.

A Swiss brass and plexiglass Chinoiserie 'Atmos' clock by J'ger-LeCoultre, with a perpetual movement. Height 23 cm

An Atmos clock by Le Coultre, four glazed sides, a brass case with a square face. 23.5 x 18.5 cm.

A J'ger Le Coultre Atmos clock, the. Height 23 cm clock with 13 jewel movement and calibre 590, serial number 680805, circa 1998.

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