crown wheel

noun

, Horology.

1. a wheel next to the winding knob, having two sets of teeth, one at right angles to its plane.
2. 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.

crown wheel

noun

1. horology the wheel next to the winding knob that has one set of teeth at right angles to the other
2. the larger of the two gears in a bevel gear

Word History and Origins

Origin of crown wheel¹

First recorded in 1640–50

Example Sentences

R is the crown wheel or balance wheel acting upon the pallets P and P', which form part of the verge V.

From Project Gutenberg

Plate 147 shows us the oldest known arrangement of a crown-wheel escapement in a clock.

From Project Gutenberg

All these four face wheels are driven by a crown wheel, which is put in motion by a horse.

From Project Gutenberg

When the teeth are arranged upon the radial or side face of the wheel, as in Fig. 4, it is termed a crown-wheel.

From Project Gutenberg