In the entirely mechanical watches with so slim structure to make the planetar mechanism visible from double sides the usual crown-wheel winding system is become unacceptable. So to make all its units on the same level, in the center of its coaxial planetary reducer is placed the rotary barrel with clockwork spring and using the cage with the escapement(s) on external planetary gear all mechanism with the tourbillon is realized. The winding of the mechanism is made by bilateral rotation of the barrel, time setting – by the torque more than winding force, what additionally acts as a safety lock for a clockwork spring, moreover the barrel walls are made transparent for power reserve visualization.
|Diameter of the case, mm||29.2|
|Height of the case, mm||2.4|
|Diameter of the mechanism, mm||27.2|
|Height of the mechanism, mm||1.4|
|Possibilities||Second’s fractions, seconds, minutes, hours, week days, power reserve|
|Timekeeping element||Resonance tourbillon escapement 21600 b/h|
|Energy source||Barrel spring|
|Minimal gear diameter, mm||1.5|
|Power reserve||48 hours|
|Winding way||Bilateral rotation of the barrel|
|Time setting way||Bilateral rotation by the torque more than winding force|
The rendering and disassembling movie of the Mechanical-Tourbillon watch.
One minutes movement with the full gearing engagement.
The barrel mechanics are presented as the unit, also removed some not important details have not influence on the understanding of the timepiece principles.