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Text File  |  1999-08-05  |  374 b   |  10 lines
  1. Unusual crown-wheel lever escapement with
  2. five very pointed teeth, each engaging
  3. alternately on the vertical with the
  4. impulse points of the pallet stones.
  5. The impulse to the balance-wheel is
  6. transmitted by a wheel fixed to the axis
  7. of the balance wheel. This system results
  8. in one oscillation per second and allows
  9. the face wheel to make two revolutions
  10. per second.