| 摘要 |
The escapement includes first ( 1 ) and second ( 2 ) escape wheels each driven by independent gear trains and barrels. The system includes a brake lever ( 8 ) cooperating with an impulse pin ( 7 ) of the roller ( 4 ) and with the escape wheels via locking pallet stones ( 12, 13 ). The roller carries pallet stones ( 10, 11 ) for receiving impulses from the escape wheels. When the wheels are locked, the brake lever occupies a centred position relative to said wheels. Means ( 16, 30, 31 ) for re-engaging the locking pallet stones in the toothing of the wheels are provided to ensure proper operation of the system.
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