摘要:
A balance locking device for an electro-dynamically maintained balance/balance-spring assembly comprises a stopping member movable between a first position in the immediate vicinity of the balance, and a second position spaced away from the balance. The balance carries at least one permanent magnet and a plate of soft magnetic material between which a soft magnetic part of the stopping member is located when the stopping member is in the first position, the magnetic forces set up locking the balance.
摘要:
Synchronizable clock with a mechanical resonator as regulator, especially receiver clocks synchronized by wireless signals and synchronous clocks driven by alternating current having a mechanical regulator forming a principal part of a running reserve. A coupling is provided between the resonator and the hand mechanism, which only transmits one half of the counting impulses. There is also a regulating mechanism which is connectable to the resonator and which alters the spring force in the resonator according to intensity and position in proportion to the oscillating masses in such a manner that a reversal of the motion of the oscillating masses occurs in the region of the normal dead center.