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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.
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
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Word History and Origins
Origin of crown wheel1
First recorded in 1640–50
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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
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