====== A. Lange & Söhne Cabaret Tourbillon ======
{{wst>image_r|A_Lange_&_Söhne_Cabaret_Tourbillon|A. Lange & Söhne Cabaret Tourbillon}}
The **Cabaret Tourbillon** is a luxury watch by [[A. Lange & Söhne]]. It extends the Cabaret series with its rectangular case and [[form movement]] not just by a model with [[tourbillon]], but it also provides the world's first tourbillon calibre with [[hacking seconds]].

===== The benefits of hacking seconds =====
[[1997]] the [[A. Lange & Söhne Cabaret]] gained much attention with its elegant rectangular shape that evoked the luxury, beauty and perfection of the [[Art Déco]] epoch. Eleven years after its conception, the **Cabaret Tourbillon** by A. Lange & Söhne sets the scene for a world premiere, which main character is the [[balance wheel]] in the bogie. With the new Calibre [[Lange L042|Lange L042.1]] it is in fact possible for the first time, to tame the "whirlwind" - the literal translation of [[tourbillon]] - with one second stop.

But first things first Behind the patented invention of the carriage escapement from [[1801]] hides a brilliant idea. It was tailored to [[pocket watch]]es which were always carried upright in the same position in the pocket. By letting the precision-determining parts - [[balance wheel]] and [[escapement]] - turn in a cage frame around the fixed seconds wheel, the position error, caused by the influence of gravity on the never perfectly balanced [[balance wheel]], can be compensated, leading to improved accuracy. Although the need for response correction no longer stands in the foreground with today's [[wristwatch]]es worn in constantly changing positions, the tourbillon in its intricate complexity has lost nothing of its original fascination.

However, one question remained if the tourbillon stands for highest accuracy, why is no device so far invented that allows such a watch instantly to stop to adjust it precisely. These question unanswered in the 200-year history of the tourbillon has challenged the designers at Lange - and can eventually find a solution. The possibility of stopping the entire mechanical tourbillon cage in the full movement was ruled out. Because of this rather simple solution, the [[balance wheel]] would commute and eventually lose its energy. It would have to run again, get an external pulse. No satisfactory solution so.

To retain the potential energy of the [[balance spring]] during the braking process, only the direct, instantaneously brake of the [[balance wheel]] rotating in the cage came into question. This was the only way to assure that the [[balance wheel]] immediately begins to oscillate on its own again, after releasing the "brake".

===== How to stop a tourbillon? =====
{{wst>image_l|A_Lange_Tourbillon_Sekundenstopp|Second stop mechanism of the Cabaret Tourbillon}}

But how to stop the oscillating [[balance wheel]] of a tourbillon [[escapement]] in a rotating cage, especially if every 20 seconds one of the three pillars of the cage is in the way? Till then all specialists who studied the tourbillon [[escapement]] so far had surrendered to this problem - and leave it to the designers of Lange to find, more than two centuries after the invention of the tourbillon, an answer Pulling the crown releases a complex lever movement that puts on a stop lever with two V-shaped spring arms on the external balance wheel and thus stops the [[balance wheel]] instantly.

This procedure is complicated by the fact that the V-shaped brake spring could meet with one arm of the three posts of the tourbillon cage. For this reason, the fine stop spring in steel is mounted movably with its two arms on a rotation point of the brake lever. That is, in this case, an arm is resting on the cage pillars, while the other descends to the outside of the [[balance wheel]] and stop it just as reliably as if both arms would meet the balance wheel.

The asymmetric curve shape of the two spring ends was determined after long trials. It was exactly formed in a way to develop an optimum pressure in all positions of the brake spring relative to the [[balance wheel]]. In addition, the ends of the brake spring are bent so that they can not get caught when stopping and releasing the [[balance wheel]]. It's not just a smart [[complication]], aesthetically staged at the dial side of the **Cabaret Tourbillon**, but also a useful innovation in best Lange tradition. Because the patented invention finally makes it also possible to measure accurately the improved performance of the tourbillon.

===== Double barrel for a power reserve of five days =====

{{wst>image_cr|Lange|L042.1}}
{{wst>image_cr|Lange|L042.1 ZB|L042.1, dial side}}

The Cabaret Tourbillon can come up with even more features The [[double barrel]] of the newly developed [[manual winding]] movement [[Lange L042|Lange L042.1]], when fully wound, delivers the impressive power reserve of [[5 days|five days or 120 hours]]. A [[power reserve indicator]] at 4 o'clock reminds the owner when it is time to feed new energy to his masterpiece.

Below the 12, the famous Lange [[big date]] forms a visual equilibrium to the tourbillon, which is visible in a recess of the dial. The [[form movement]] is manufactured and finished to the highest Lange quality standards, and is a true feast for the eyes on the fine decorated [[three-quarter plate]] in untreated [[German silver]] spread six screwed gold [[chaton]]s. Three more are on the hand-engraved intermediate-wheel and tourbillon cocks as well as on tourbillon bridge with a black polish on the dial side. The pins of the [[balance staff]] are held by two [[diamond]] endstones. A rectangular case 29.5 x 39.2 mm large in [[platinum]] or [[red gold]] offers the perfect setting for the world premiere of the first tourbillon with [[hacking seconds]].

//Text partly by A. Lange & Söhne//

<WRAP ud ud_mod>
**Reference:**
  * 703.025 ([[platinum]]), 703.032 ([[red gold]])

**Movement:**
  * [[Manual winding]] movement [[Lange L042|L042.1]], [[form movement]], 21,600 A/h
  * 47 [[jewels]], including 2 diamond endstones
  * 9 screwed gold [[chaton]]s
  * [[Big date]], [[tourbillon]] with [[hacking seconds]]
  * [[Glucydur]] [[screwed balance]], in-house manufactured [[hairspring]] with [[swan-neck precision regulator]]
  * Patented beat adjustment
  * Glashütte [[three-quarter plate]] in untreated [[German silver]]
  * Power reserve 5 days (120 hours) 
  * 373 components, including 84 in bogie

**Case:**
  * [[Platinum]] / 18ct [[red gold]]
  * 39.2 x 29.5 mm, height 10.25 mm
  * [[Sapphire crystal]]
  * [[Sapphire crystal]] caseback

**Dial:**
  * Solid [[silver]], rhodié or argenté
  * Lancet hands in [[rhodinated]] gold or [[red gold]]

**Functions:**
  * Hours, minutes, [[small seconds]] at the 8
  * Minutes [[tourbillon]] with patented [[hacking seconds]]
  * [[Big date]] at the 12
  * Power reserve indicator at the 4

**Bracelet:**
  * Black crocodile leather strap with massive Lange [[folding clasp]] in massive [[platinum]] or red gold

**Price:**
  * [[Platinum]] ca. 265.400 $, [[red gold]] ca. 235.600 $
</WRAP>

{{tag>Watch_models Watches_with_tourbillon A._Lange_&_Söhne_models}}