THE NEW MEANING OF AUTOMATIC.
The calibre 106.0, a classic pillar movement with a 2/3 plate, is the manufacture’s first automatically wound calibre. The bidirectional automatic hammer mechanism, Hamatic for short, is configured such that the movements of the hammer head and of the entire system can be observed both through the dial aperture and on the rear side of the movement. In every detail, the Hamatic mechanism was seamlessly integrated in the movement, which was totally redesigned explicitly for this purpose. The mainspring barrel is a service-friendly unit suspended on a barrel arbor. Between the barrel and the pallet lever, the train wheels are arranged in such a manner that all components of the automatic winder are optimally exposed for the observer. The manual winder is a traditional yoke winder.
THE HAMATIC MECHANISM
The bidirectionally acting automatic hammer mechanism relies on the interaction of the hammer body with the hammer head and the hammer spring. The oscillation of the hammer spring is transferred to the hammer body via a sapphire roller. Hallmarks of the system are efficiency and dependability. In the event of a gentle motion and low amplitude of the hammer, energy transmission is nearly loss-free. Should fast movements and high acceleration rates occur, excessive deflections are attenuated by a catch bracket and limited by fixed end stops.
THE REDUCTION GEAR
The Hamatic system features a click mechanism integrated in the rotary axis of the hammer body; it serves as a bidirectional winder. The oscillations of the hammer body are picked up by two click levers and converted into a continuous rotary motion powered by the alternating direction of rotation of the click wheels. The rotary motion is transferred to the free wheel via the reduction wheel and then to the ratchet wheel of the mainspring barrel.
THE YOKE WINDER
For perfect reconciliation with the Hamatic mechanism, the manual winder is designed as a yoke winder that is mounted on a separate bridge. When the Hamatic system is active in response to motion, the manual winder is uncoupled from the ratchet wheel by the yoke. In the manual winding mode, the reduction gear is isolated from the ratchet wheel by a click-pawl idler. When the crown is pulled, the balance is stopped to enable handsetting. At the same time, the crown wheel and the ratchet wheel are disengaged by the yoke. When the crown is pushed home again to the winding mode, the balance stop is deactivated and the yoke pivots into the ratchet wheel. The simple and functionally reliable design of the yoke winder has proved to be an ideal complement to the automatic winder.