escapement
30 teeth and two pallets
An escape wheel of 30 teeth and a pair of pallets spanning 4 and a half tooth pitches. The heavier line at each pallet is the locking face, here an arc about the arbor; the lighter one is the impulse face the tooth slides along once it is let go. The wheel is drawn where the contact puts it, not where it looks well: at this pallet angle the tooth in play sits on the lock face and the wheel is -0.0320° from it. Dragging the pallet through its whole engagement moves the wheel by 0.106° of recoil. Of the 6.0° the wheel turns each beat, 65.9% is drop and does nothing.
Motion that stopsdraggable: palletwide
Where it is used
- The mechanism that waits Motion that stops
- A joint that works one way Motion that stops
- What one contact forbids Contacts that only push
- The resolution is the pitch Motion that stops
- The arc that is concentric with the pivot Motion that stops
- The escapement that could not alternate Drawn wrongly
- Where the tooth lets go Motion that stops
- The wheel that goes backwards Motion that stops
- The angle that holds the lock Motion that stops
- A clock is a factorisation Teeth
- Detached, and safe while detached Motion that stops
- One test, three mechanisms Motion that stops
- Where the input stops deciding Motion that stops
- What a drop cannot be smaller than As built
- A ratchet with no teeth Motion that stops
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