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- Ferguson Cole Duplex is a very complicated form
- of the duplex, and again it is hard to see that
- it haas any advantages.
- The action is that as the balance turns the
- locking roller is turned, the arm on the pinion
- is released and flies round, and the other arm
- is immediately locked. Thus the pinion turns half
- a turn and releases 4 leaves, and thus the 4
- teeth of the wheel of 60. This means that the
- raised tooth gives impulse to the pallet on the
- balance.
-
- A - Fourth wheel with each 4th tooth double height.
- B - Locking arm.
- C - Single pallet.
- D - Balance Staff.
- E - Wheel fitted on balance staff and wheel fitted
- to arbor carrying ruby roller.
- F - Locking or ruby roller.