![]() The torsion pendulum executes only two torsional oscillations per minute, which is 1/30th the rate of the pendulum in a grandfather clock. For timekeeping it uses a torsion pendulum, which consumes less energy than an ordinary pendulum. In order to run the clock on this small amount of energy, everything inside the Atmos has to work in as friction-free a manner as possible. A temperature variation of only one degree in the range between 15 and 30 degrees Celsius, or a pressure variation of 3 mmHg, is sufficient for two days' operation. Its power source is an internal hermetically sealed capsule containing a mixture of gaseous and liquid ethyl chloride, which expands into an expansion chamber as the temperature rises, compressing a spiral spring with a fall in temperature the gas condenses and the spring slackens. This motion constantly winds the mainspring. It gets the energy it needs to run from temperature and atmospheric pressure changes in the environment, and can run for years without human intervention. It is a clock which does not need to be wound manually. ![]() Height 9 inches x Width 9 inches x Depth 7 inchesĪtmos clock - invented in 1928 by Jean-Léon Reutter, and then perfected and manufactured by Jaeger-LeCoultre. Height 24 x Width 22 x Depth 18 Dimensions in inches: In really excellent condition and in working order, keeps perfect time. It is a delightful clock which never needs winding. The Empire style has been glamorously revived by Jaeger Le Coultre in this delightful and rare Atmos clock. The clock has a circular Arabic signed dial with open centre revealing the jewelled movement, sword hands and milled balance and comes in its original box with the directions for use. ![]() The clock self-winds and keeps time on temperature and environmental changes, perpetually spinning the pendulum hence the name 'Atmos'. The clock is displayed in a polished gilt rectangular brass case with a removable front door that opens to allow access to the movement. ![]() This is a very elegant Vintage Atmos perpetual mantle clock by Jaeger-LeCoultre, with a jewelled movement bearing their ref No. ![]()
0 Comments
Leave a Reply. |