contrate wheel
/ˈkɒntreɪt
/noun
Another term for crown wheel.If the pivot guard needs to be rotated to suit a contrate wheel to one side, carefully remove the balance cock, complete with hairspring, balance wheel etc....
- Note how the balance wheels are in a horizontal position being driven by the movement train through a contrate wheel which allows for the change in position.
- The ivory contrate wheel drives the metal pinion for the ivory crown wheel.
Origin
Late 17th century: contrate (a rare adjective meaning 'opposed, contrary') from medieval Latin contrata 'lying opposite', from Latin contra 'against'.
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