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            With the invention of the pendulum, watchmakers noticed that their beat often interfered with the environment and it was not

unusual for a pendulum clock to stop, on its own, when it entered into resonance with the driving-weight hanging from the cords. 

            The first to get the feeling that one might turn this disadvantage into an asset was Antide Janvier, a particularly brilliant watch-

maker or “mechanical engineer” as he described himself born in 1751, in St. Claude, France. His idea was to build two complete move-
ments with two precision escapements and place them close to each other, ensuring that the two pendulums were hanging from the
same construction. Just as he imagined, the pendulums recovered the energy dissipated by one another and began to beat together,
thus entering into resonance. 

            Functioning as such, the movements are protecting themselves from outside vibrations, considerably enhancing their preci-

sion. Around 1780, Antide Janvier built two precision regulators, one of which is preserved at the Paul Dupuy museum in Toulouse,
while the second belongs to the private collection of Montres Journe SA in Geneva. A third regulator is kept at the Patek Philippe 
Museum in Geneva. 

            Thirty years later, Abraham-Louis Breguet built a resonance regulator for Louis XVIII, King of France, which is now part of the

collection of the Musée des Arts et Métiers in Paris. He built a second piece for the King of England, George IV, which is housed at
Buckingham Palace. He also made a pocket-watch based on the same principle for each of these famous characters. 

            To my knowledge, no-one else in watch making took any further interest in this fascinating physical phenomenon! The advan-

tages of the resonance in terms of precision led me to pursue my own personal research and attempts. After fifteen years of work, I was
able to adapt this very phenomenon to a wristwatch for the second model of the Souveraine collection: the Chronomètre à Resonance.
I felt that this resonance system was particularly well suited for the various wrist movements; especially the repeated shocks that can
occur on the watch mechanism that are so detrimental to its smooth running.

            
            

François-Paul Journe

Preface

           Chronomètre à Résonance
           

An emblematic timekeeper_

Summary of Contents for Invenit et Fecit Chronometre a Resonance

Page 1: ...User manual Chronomètre à Résonance A unique design based on an exclusive mechanism English 1 ...

Page 2: ...l Dupuy museum in Toulouse while the second belongs to the private collection of Montres Journe SA in Geneva A third regulator is kept at the Patek Philippe Museum in Geneva Thirty years later Abraham Louis Breguet built a resonance regulator for Louis XVIII King of France which is now part of the collection of the Musée des Arts et Métiers in Paris He built a second piece for the King of England ...

Page 3: ...r the watchmaker to gain the maturity and experience that is required to meet the standards of actual wrist wear and provide high performance chronometry Fifteen years that allowed him to present as a world premiere the very first resonance wristwatch pushing the limits of chronometry where they had never gone before Each of the two balances alternately serves as exciter and resonator When the two...

Page 4: ... by Droz in the Palais Granvelle Several years later Janvier became a member of the Academy In 1770 A Janvier developed a large planetarium representing the inequalities of the planets their eccentric orbits their equinoctial points the revolutions of their satellites etc This machine was presented to Louis XV Janvier then started an internship with M Devanne to perfect his knowledge in clock maki...

Page 5: ...5 Antide Janvier Born 1751 in Briva Jura 1835 Paris ...

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Page 7: ...tides several other planetariums and clocks of extraordinary ingenuity and astronomical complications The cases of all his clocks were crafted by the best craftsmen of that time He passed away in Paris in September 1835 at the age of 84 years old In 2002 François Paul Journe gathered a very rare resonance regulator signed Antide Janvier The acquisition of this regulator was extremely moving for me...

Page 8: ...efining precisely the hours of day and those of night The dial at 3 o clock in silver guilloche indicates the local time but can also be used for the same time zone In 2018 anticipating the 20th anniversary of the Chronomètre à Résonance in 2020 F P Journe creates this new version with two analogic dials with a 24 hour display indicator at 9 o clock and 12 hour display indicator at 3 o clock The s...

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Page 10: ...e classic configuration of Marine Chronometry the power reserve hand indicates the number of running hours since the last winding Setting the time Pull the crown at 12h00 out to position 2 Adjust left dial by winding crown towards the left and towards the right for the right dial Reset both seconds to zero By pulling crown at 4h00 3 the seconds will be reset to 60 simultaneously Please note Push t...

Page 11: ...1 Position Winding Position Reset both seconds to zero 2 3 Position Time setting 11 Operating instructions ...

Page 12: ...o the resonance effect and naturally begin to beat in opposition The movements negative effects due to the wearing of the watch are thus considerably reduced The resonance point is obtained by an extremely precise adjustment of the parting between the right and the left balance The narrowing pinion is specifically meant for this purpose This particularly meticulous adjustment is exclusively made i...

Page 13: ...ators The hour dial in plain silver guilloché is maintained by a polished steel circle screwed on the 18K gold face Patended system Silver 18K Gold Polished Steel Seconds Hours and minutes Crown Crown Power reserve indicator ...

Page 14: ...Characteristics_ 2 x balances with 4 inertia weight 2 x flat micro flamed Anachron balance spring 2 x mobile stud carriers free sprung 2 x spring laser pinned to Nivatronic collets Pinned GE studs Frequency 21 600 v h 3Hz Inertia 10 10 mg cm2 Angle of lift 52 Amplitude 0h dial up 320 24h dial up 270 Main characteristics_ 2 independent gear trains 2 positions winding stem Correction of the hour in ...

Page 15: ...nds at 6h00 Power reserve at 11h00 Power Reserve_ 40 hours 2h Finishing_ Circular graining on base plate Screw heads polished and bevelled with chamfered slots Pegs with polished rounded ends Case_ Platinum or 18K red gold Diameter 40 mm Total height 9 0 mm Number of parts_ Jewels 40 Movement without dial 299 Cased up with strap 336 Préface Tourbillon Souverain À la conquête de la précision_ ...

Page 16: ...sion with a power reserve indicator 33 these three coaxial wheels 23 25 26 pivoting freely around their common rotation axis the third wheel 26 containing equidistant openings placed on a concentric circle to its piv oting axis and sized to receive balls freely 27 with a diameter exceeding the thickness of the third wheel 26 and a medium 28 to exert two antagonistic strengths on the first two coax...

Page 17: ...24 1d 1g 1g 21 26 27 23 28 25 1a B 22 1f 1 17 ...

Page 18: ...e warranty card or certificate The warranty is valid only on presentation of the original card or certificate duly filled out by the authorised retailer serial number date of purchase retailer s stamp The warranty does not cover normal wear or damage resulting from abnormal use of the watch accidents or alterations Warranty extension_ If your F P Journe Invenit et Fecit watch was purchased at an F...

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