TOURBILLON
AND SPECIAL ESCAPEMENTS

THE
TOURBILLON

Developed by Abraham-Louis Breguet in 1801, the tourbillon compensates for the effect of gravity on a pocket watch held in the vertical position. The operating principle has not fundamentally changed since that time: the elements that distribute the energy (escapement wheel and anchor) as well as the regulating system (balance wheel and the ‘Breguet curb’ balance spring) are united inside a rotating cage that turns around its axis at a rate of one revolution per minute. By its rotation, this cage makes it possible to offset the running differences caused by the effects of gravitation.

Audemars Piguet played a pioneering role in the development of tourbillon wristwatches with the release of the world’s first selfwinding tourbillon wristwatch in 1986. This tourbillon is still one of the smallest in the world today with a diameter of 7.2 mm. This wristwatch forged a new path for the entire high-end watchmaking sector, which renewed ties with this complicated mechanism.

A rare find in Haute Horlogerie, the tourbillon has remained a symbol of watchmaking art and excellence, as only a few watchmakers are trained to perfect this mechanism today.

AUDEMARS PIGUET
ESCAPEMENT

In 2006, the Manufacture released a new direct-impulse escapement in the Tradition d’Excellence N° 5. The escapement serves to transmit the energy from the barrel to the movement in a smooth and linear way. Inspired by the work of 18th-century French clock maker Robert Robin, Audemars Piguet's new escapement combines the high efficiency of a direct impulse escapement, which transmits energy directly from the escape wheel to the balance wheel, with the reliability of a traditional Swiss lever escapement. In blending the two, the Manufacture has succeeded in reducing energy loss and in eliminating the need to lubricate the pallet stones. These technical advances have enhanced rating accuracy, long-term stability and shock resistance.

This new escapement is also distinguished by the atypical construction of the regulating organ which is composed not just of one balance spring, but of two placed top to tail. This flat, opposite-facing double spring system notably ensures automatic compensation for potential balance flaws and does away with the imprecision resulting from the vertical position of the watch without needing to resort to a complex device such as a tourbillon.