上午9:40
Ichihiro
The Harmonious Oscillator: a watchmaking revolution
by Rudis Sylva
Some master watchmakers and watch critics who have seen it comment that it is just as important as the invention of the tourbillion. Rudis Sylva is proud to announce the birth of The Harmonious Oscillator, the groundbreaking horological innovation that offers far better accuracy than conventional tourbillons or carrousels.
Featuring a system with two mechanically interlinked balances driven by a single escapement, The Harmonious Oscillator goes against watchmaking theories, which have always ruled out stress on the balances. With its innovative technicality, this design can boast a more accurate setting capacity than a conventional tourbillon, thanks in particular to the asymmetric deployment of the balance springs in all positions, hence the name "Harmonious Oscillator". This world first with two toothed balances exhibits a resonance effect from the first oscillations.
Developed by watchmaker Mika Rissanen, The Harmonious Oscillator features the following technical specifications:
- Two complete toothed balances are interlinked. This combination ensures the same amplitude. The symmetry and energy of the balance springs are constantly opposed, enabling instantaneous average correction in the vertical position, which eliminates the effects of gravity.
- Frequency: 21,600 vibrations/hour (3 Hz).
- The cage turns 360 degrees in 60 seconds.
- Cage diameter: 17.40 mm.
- 2 flat balance springs, asymmetric deployment.
- 2 specifically shaped toothed balances made from special material.
- 1 escapement with 1 lever positioned at 90 degrees.
- Manual winding mechanism.
- Power reserve: around 50 hours.
While a tourbillon requires a minute to compensate for the effects of gravity, The Harmonious Oscillator enables instantaneous time correction in a vertical position by means of the interconnection of the balances and asymmetric deployment of the balance springs, thus is able to offer far better accuracy than conventional tourbillons or carrousels. This mechanism is close to perfection in terms of setting. Tests performed on various measuring instruments give exceptional results, in particular with regard to amplitude in all positions, or after 24 hours in a vertical position. The amplitude deltas (difference in degrees of amplitude when changing positions) measured on the timing machine are also excellent.
Apart from technical excellence, the movement features exceptional aesthetics as it is designed, built, machined and then decorated by extreme craftsmanship. The bevelling and dashed lines are done entirely by hand, featuring exceptional precision that cannot be produced by machinery. This finish consists of eliminating the edges between the surface and flanks of the piece, forming a 45 degree chamfer (bezel) which will then be polished. The regulator cage bridge has an innovative and extremely complicated decoration. The piece has a black-coloured 45 degree bevel, giving this highly visible bridge clear proof of the perfection of the work undertaken by the Rudis Sylva brand.
On the hour and minute indicating dial, which is hand guilloche with tapering trapezoids, the hour and minute are clearly displayed by two fir tree shaped hands. The plate under the regulator is adorned with a "Clous de Paris" decoration with very fine hand guilloche work, thereby bringing out the richness of the regulating part. An innovative large date developed completely in-house adorns the dial with one of the most practical functions that a watch can carry.
The gold or platinum case back is adorned with an enamelled and hand engraved sun dial. This dial is a reproduction of that adorning the wall of the "Les Rosées" farm, in the village of Les Bois, formerly known as Rudis Sylva. This magnificent structure is one of the most beautiful representatives of the era of the farmer watchmakers, dating from 1750, which subtly points to the historical origin of the brand.
Comments here
