A.Lange & Sohne invented a mechanism that used two discs to solve the problem. This system is still in use by the brand. The mechanism's two discs each have their own "program wheels" which index the two discs, the circular ones and the cruciform 10s discs, to ensure a smooth changeover.Audemars Piguet Replica Watches In turn, the program wheels are both indexed by one central date wheel. This means that the teeth of the one date wheel's teeth will pass the ones date wheel's teeth on the switchover from 31 to 1st. This is done by using different length teeth on the program wheel for each ones date disc.
A. Lange & Sohne's date mechanism has two discs -- one circular, the other cruciform.
The intricately designed jeweled jumper springs keep the wheels and discs in their place until the time for the switchover. You can adjust the whole mechanism using a pusher at 10 o'clock.breitling replica watches The date can also be switched instantly.
The watch's Lange big date mechanism adds an additional 66 components. A simple, non-instantaneous, date wheel is common in older watches that don't allow quickset date adjustment from crowns.A.Lange & Sohne Replica It only has three parts - the day wheel, a gear that rotates once per 24 hours to index the wheel and a jumper spring. This is why A.Lange & Sohne is proud to have introduced the big date mechanism in 1994.
A.Lange & Sohne Replica model of the outsize date mechanism