Definition of crown wheel in English:

crown wheel


  • A gearwheel or cogwheel with teeth that project from the face of the wheel at right angles, used especially in the gears of motor vehicles.

    • ‘It can be confirmed that the first information about clocks with crown wheels was found in Italy and that the noble art of clockmaking was born there.’
    • ‘The grey gearwheels are crown wheels with normal cylindrical gearing on the outside circumference.’
    • ‘Parts of the main drive machinery remain: the main shafts and crown wheels from two of the main water-wheels; and the horizontal shaft which provided power, via belts and lines, to the machinery.’
    • ‘The organisation excels as recognised crown wheel manufacturers that conform to strict national, international and environment standards.’
    • ‘The great spur wheel and the lay shaft crown wheel have wooden teeth turning cast iron pinions.’
    • ‘With our rally development work we have found that the crown wheels and pinions previously available have inherent faults in the gear cutting, materials, design and heat treatment.’
    • ‘As the weight falls, it sets the crown wheel moving round in jerks or ‘ticks’.’
    • ‘The most likely distortion to occur as the result of whacking the ‘other end’ is the rather permanent one of a cast crown wheel resolving itself into at least two parts.’
    • ‘The teeth of the crown wheel act upon the pallets alternately and cause the balance to oscillate.’
    • ‘It had a new back axle with twin wheels out of alignment and double crown wheels and pinion.’
    • ‘The internal diameter of hardened crown wheels are ground by holding the component in pitch line chucks to ensure accuracy of the finished gear.’
    • ‘The hands of the clock are connected to the shaft of the crown wheel by a system of gears.’
    • ‘The ingenious contrivance for this purpose consisted of a crown wheel, rotated by the falling weight, whose teeth drove the pallets of a verge backwards and forwards.’
    • ‘This same product also secures the crown wheel to the differential to prevent fretting (wear caused by small metal particles generated on assembly).’
    • ‘The process is not so straight forward in a clock equipped with a horizontal crown wheel as this one is.’
    • ‘The yarns were attached to the crown wheels on the jack and joined together on the single hook on the cart.’