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- One Tooth Esc. Wheel Lever
- The tooth or crankpin V is locked on the
- receiving pallet R. As the impulse jewel E
- enters the fork and makes a slight movement
- of the lever, the pallet R moving to the
- left unlocks the tooth V which at V'
- delivers impulse R'. Having delivered the
- impulse the tooth as at V" drops on and locks
- the pallet as at D". When the impulse
- jewel E" moves the D" pallet to the right
- the tooth is unlocked and delivers impulse
- as at V"' and locks as at V.