crown wheel
noun Horology.
a wheel next to the winding knob, having two sets of teeth, one at right angles to its plane.
any of various wheels having the form of a hoop or short cylinder with a serrated edge, as the escape wheel in a verge escapement.
Origin of crown wheel
First recorded in 1640–50
Words nearby crown wheel
Example sentences from the Web for crown wheel
When the teeth are arranged upon the radial or side face of the wheel, as in Fig. 4, it is termed a crown-wheel.
Modern Machine-Shop Practice, Volumes I and II |Joshua RosePlate 147 shows us the oldest known arrangement of a crown-wheel escapement in a clock.
Watch and Clock Escapements |Anonymous
British Dictionary definitions for crown wheel
crown wheel
noun
horology
the wheel next to the winding knob that has one set of teeth at right angles to the other
the larger of the two gears in a bevel gear