The outer ring of the balance wheel is brass and the inner ring is steel and the two metals are tightly@mimo.su

Above the balance of the technical requirements of the hairspring, in addition to the balance of the balance wheel, in the disassembly process with the magnifying glass can be observed through the magnifying glass. If you do not meet the above requirements must be trimmed or replaced, Replica Cartier Earrings otherwise the table machine is not good, let alone accuracy.
In addition, the balance of the technical requirements of hairspring there are many. Such as: the balance of the balance wheel, the curly hair into the horn, gossamer in the speed of the needle within the box, pendulum axis axial clearance and other technical requirements, we can learn through theoretical knowledge for more in-depth understanding.
Balance spring system (vibration system) – A brief history of development
Mature watches should start from the British clock
Since the 17th century that famous “sailing astronomical clock” game, the British clock was once the world’s best. The early British balance wheel system is a metal with a closed light pendulum made of iron-based flat hair (blue), that is, the Dutch scientist Huygens Fake Cartier Love Earrings invented the balance of the round of the clock. Often, the balance wheel of the senior British table is made of precious metals (k gold) to increase the inertia of the balance wheel and can achieve the exact purpose of walking. To now retain these precious watches to see, the daily travel time error will be about 5 minutes.
Late British table also used bimetallic truncated balance wheel
Bimetallic truncated balance wheel
Balance wheel
This balance wheel is also invented by the British (who specifically forgot). The outer ring of the balance wheel is brass and the inner ring is steel, and the two metals are tightly joined together by screws. This round the wheel more than a dozen screws, not only fixed metal, but also can adjust the balance of the balance wheel. This design cleverly compensates for the change in temperature due to temperature changes in the gossamer, and the rigidity of the change will bring no small travel time error. When the temperature rises, the hairspring becomes longer, and the balance wheel due to the expansion coefficient of copper is greater than the steel, will shrink inside. Conversely, the temperature decreases, Cheap Cartier Juste un Clou Earrings the hairspring becomes shorter, the balance wheel will expand outward. This design lasted until the invention of the tile alloy.
Such a sophisticated design is also common in the “sailing astronomical clock”, and the sky clock is a kind of around the cylindrical gossamer, commonly known as “barrel hairspring.” The barrel-shaped gossamer is very difficult to produce, but the benefits of this gossamer are also obvious – can greatly reduce the difference caused by the divergence of the heart of diarrhea. But this gossamer is usually not used on portable watches, because he occupied the volume is too large, a decent gentleman, his pocket pocket pocketed a large piece of it, it is not elegant.
Balance wheel
Balance wheel
To the 18th century, the British have not occupied an absolute advantage in the clock, the other a sudden army – the French watch also occupies a seat status. One of them is familiar with the master figures: Mr.cartier. He solved the gossamer heart and barrel bucket hair volume is too large problem:cartier-style Shangrao gossip.
Balance wheel
(Picture shows the traditionalcartier gossamer around the map)
The advantage of this gossamer is that he solved two problems: gossamer concentric, small size. The most primitivecartier-style gossamer Shangrao part is a straight line (above)
Later, with a different variant, that is, to cancel this line, but the function is complete.
As for thecartier in order to completely solve the problem of the existence of this phenomenon and the story of the tourbillon, here is not described.
But here is worth mentioning that not only Mr.cartier to solve the troubled people for many years the gossamer concentric problem. LOSSIER (LOSSIER) gossip also have the same purpose,Amulette de Cartier Earrings Outlet although his focus is not to solve the problem of concentricity, according to the only information to discuss, this invention, the main solution to thecartier gorgeous easy to suffer the problem of hanging pile The Balance wheel
(In the inner ring is clearly there is a different curve and the vicinity of the other gossamer)
In 1896 the Swiss physicist Charles Guillaume invented an alloy whose thermal expansion coefficient was significantly reduced near the magnetic temperature, that is, the Curie point, and the so-called anomalous thermal expansion (negative anomaly) Which can be in the vicinity of a wide temperature range around the room temperature, to obtain a small or even close to zero expansion coefficient, the composition of this alloy is 64% Fe and 36% Ni, the face of the heart structure, its grade 4J36, Its Chinese name is Yin Gang, the English name is Invar alloy (invar), meaning the same volume. The excellent contribution of this excellent alloy to scientific progress was so great that the discoverer (Swiss physicist Guillaume) won the 1920 Nobel Prize in Physics and was the first and only scientist in history Due to a metallurgical results and won the award.
The invention was quickly applied to the watch, and the bimetallic truncated balance wheel had become history because the hairspring made by Inva alloy did not require a balance wheel to compensate for the temperature change. Balance wheel
(This balance wheel also left for the fine adjustment of the screw but the balance wheel body has been used in tile alloy)
People gradually Knockoff Cartier Trinity Earrings found that get rid of the balance wheel on the heavy screws, the frequency can be increased to an unprecedented speed, light pendulum once again back to the people’s eyes, and frequency records are constantly refreshed from the original 1 \ 2 seconds, 1 \ 4 seconds, in a short time quickly increased to 1 \ 6,1 \ 8,1 \ 10 even incredible 1 \ 100 seconds! The accuracy of the watch is again improved.
From ancient light to modern light pendulum, is also an interesting reincarnation.
But now with the balance of the balance wheel and quietly return, by the Patek Philippe invention weight balance wheel, has been favored by the senior table. This balance wheel generally with no card to use the gossamer, the benefits of no card gossamer is that there is no traditional gossamer, there is no gossamer and the gap between the gap caused by the movement of the clip, the other caused by accidental collision caused by the gap The phenomenon of error is also completely eliminated. And the weight of the weight through the inside and outside the imbalance to control the balance of the balance wheel to achieve the purpose of adjusting the rhythm. Balance wheel
ap high-frequency balance wheel structure, used to put the weight, in order to enhance the stiffness of the hairspring and compensation flat hair silk bit difference, the use of a veritable double gossamer!