crown wheeln.

Brit.

/ˈkraʊn wiːl/, U.S.

/ˈkraʊn ˌ(h)wil/

Forms: see crown n. and wheel n.

Origin: Formed within English, by compounding. Etymons: crown n., wheel n.

Etymology: < crown n. + wheel n.

1. Originally: (in a traditional clock or watch) a wheel having a number of pointed teeth around its edge, at right angles to its plane, forming part of the escapement. In later use also: any wheel with cogs or teeth at right angles to its plane.

ΘΚΠ

the world > time > instruments for measuring time > watch > [noun] > parts of

barrel1591

motion1605

bezel1616

fusee1622

string1638

crown wheel1646

out-case1651

watch-box1656

nuck1664

watchwork1667

balance-wheel1669

box1675

dial wheel1675

counter-potence1678

pendulum-balance1680

watch-case1681

pillar1684

contrate teeth1696

pinion of report1696

watch-hook1698

bob-balance1701

half-cock1701

potence1704

verge1704

pad1705

movable1709

jewel1711

pendant1721

crystal1722

watch-key1723

pendulum spring1728

lock spring1741

watch-glass1742

watch-spring1761

all-or-nothing piece1764

watch hand1764

cylinder1765

cannon?1780

cannon1802

stackfreed1819

pillar plate1821

little hand1829

hair-spring1830

lunette1832

all-or-nothing1843

locking1851

slag1857

staff1860

case spring1866

stem1866

balance-cock1874

watch-dial1875

balance-spring1881

balance-staff1881

Breguet spring1881

overcoil1881

surprise-piece1881

brass edge1884

button turn1884

fourth wheel1884

fusee-sink1884

pair-case1884

silver bar1884

silver piece1884

slang1884

top plate1884

karrusel1893

watch-face1893

watch bracelet1896

bar-movement1903

jewel pivot1907

jewel bearing1954

society > occupation and work > equipment > machine > parts of machines > wheel > [noun] > cog or gear > with axles or teeth set at specific angle

crown wheel1646

mitre wheel1825

mitre1844

skew gearinga1877

helical gear1888

spiral gear1888

skew gear1908

helical1913

spiral bevel gear1915

1646 N. Lockyer Eng. faithfully watcht With 157 Action speaks out affection..: if the heart be drawn, the foot will run; the crown wheel moving though but slowly, the little wheels run apace.

1696 W. Derham Artific. Clock-maker i. 5 The Contrate-Wheel, is that Wheel in Pocket-Watches, which is next to the Crown-Wheel, whose Teeth and Hoop lye contrary to those of other Wheels.

1728 E. Chambers Cycl. at Watch-work The Crown-Wheel, in Pocket Pieces, and the Swing-Wheel in Pendulums; serving to drive the Balance or Pendulum.

1769 W. Emerson Mechanics v. 109 D the crown wheel acting against the palats C, C.

1808 C. Vancouver Gen. View Agric. Devon v. 130 Perpendicular shaft..[with] crown wheel of two-inch plank, with six cast iron segments, composing a crown-wheel of 108 cogs.

1881 F. J. Britten Watch & Clockmakers' Handbk. (ed. 4) 150 The few verge trains with crown wheel of nine have escape pinions of 6.

1951 Notes & Rec. Royal Soc. 8 167 It was the invention of a new escapement in place of the crown-wheel and verge which Huygens had used which made tolerably accurate astronomical clocks practicable.

2004 Gazette (Montreal) (Nexis) 16 Aug. a4 Laid out..are the various parts of a 1929 Elgin pocket watch—the hour plate and screws;..crown wheel;..and an enamel face showing intricate Masonic symbols.

2. spec. A wheel in the differential gear of a motor vehicle with teeth at right angles to the wheel; the larger gear wheel in a pair of bevel gears.

ΘΚΠ

society > travel > means of travel > a conveyance > vehicle > powered vehicle > parts and equipment of motor vehicles > [noun] > transmission > specific gear > gear-wheel

crown wheel1899

1899 Automotor & Horseless Vehicle Jrnl. June 458/2 To one end of the armature spindle is keyed a compressed leather pinion which gears with the crown wheel of the differential gear.

1908 Westm. Gaz. 29 Dec. 4/1 The transmission [of a motor-car] being by chain,..crown-wheel, and differential gears.

1990 W. A. Livesey GCSE Motor Vehicle Stud. xi. 92/1 The final drive gear ratio is the ratio of the speed of the pinion to that of the crown wheel.

2001 Automobile June 80/1 (advt.) We are gear cutters who specialise in making crownwheel & pinion sets & differential gears for all types of classic cars.

This entry has been updated (OED Third Edition, June 2014; most recently modified version published online March 2022).

单词	crown wheel
释义	crown wheeln. Brit. /ˈkraʊn wiːl/, U.S. /ˈkraʊn ˌ(h)wil/ Forms: see crown n. and wheel n. Origin: Formed within English, by compounding. Etymons: crown n., wheel n. Etymology: < crown n. + wheel n. 1. Originally: (in a traditional clock or watch) a wheel having a number of pointed teeth around its edge, at right angles to its plane, forming part of the escapement. In later use also: any wheel with cogs or teeth at right angles to its plane. ΘΚΠ the world > time > instruments for measuring time > watch > [noun] > parts of barrel1591 motion1605 bezel1616 fusee1622 string1638 crown wheel1646 out-case1651 watch-box1656 nuck1664 watchwork1667 balance-wheel1669 box1675 dial wheel1675 counter-potence1678 pendulum-balance1680 watch-case1681 pillar1684 contrate teeth1696 pinion of report1696 watch-hook1698 bob-balance1701 half-cock1701 potence1704 verge1704 pad1705 movable1709 jewel1711 pendant1721 crystal1722 watch-key1723 pendulum spring1728 lock spring1741 watch-glass1742 watch-spring1761 all-or-nothing piece1764 watch hand1764 cylinder1765 cannon?1780 cannon1802 stackfreed1819 pillar plate1821 little hand1829 hair-spring1830 lunette1832 all-or-nothing1843 locking1851 slag1857 staff1860 case spring1866 stem1866 balance-cock1874 watch-dial1875 balance-spring1881 balance-staff1881 Breguet spring1881 overcoil1881 surprise-piece1881 brass edge1884 button turn1884 fourth wheel1884 fusee-sink1884 pair-case1884 silver bar1884 silver piece1884 slang1884 top plate1884 karrusel1893 watch-face1893 watch bracelet1896 bar-movement1903 jewel pivot1907 jewel bearing1954 society > occupation and work > equipment > machine > parts of machines > wheel > [noun] > cog or gear > with axles or teeth set at specific angle crown wheel1646 mitre wheel1825 mitre1844 skew gearinga1877 helical gear1888 spiral gear1888 skew gear1908 helical1913 spiral bevel gear1915 1646 N. Lockyer Eng. faithfully watcht With 157 Action speaks out affection..: if the heart be drawn, the foot will run; the crown wheel moving though but slowly, the little wheels run apace. 1696 W. Derham Artific. Clock-maker i. 5 The Contrate-Wheel, is that Wheel in Pocket-Watches, which is next to the Crown-Wheel, whose Teeth and Hoop lye contrary to those of other Wheels. 1728 E. Chambers Cycl. at Watch-work The Crown-Wheel, in Pocket Pieces, and the Swing-Wheel in Pendulums; serving to drive the Balance or Pendulum. 1769 W. Emerson Mechanics v. 109 D the crown wheel acting against the palats C, C. 1808 C. Vancouver Gen. View Agric. Devon v. 130 Perpendicular shaft..[with] crown wheel of two-inch plank, with six cast iron segments, composing a crown-wheel of 108 cogs. 1881 F. J. Britten Watch & Clockmakers' Handbk. (ed. 4) 150 The few verge trains with crown wheel of nine have escape pinions of 6. 1951 Notes & Rec. Royal Soc. 8 167 It was the invention of a new escapement in place of the crown-wheel and verge which Huygens had used which made tolerably accurate astronomical clocks practicable. 2004 Gazette (Montreal) (Nexis) 16 Aug. a4 Laid out..are the various parts of a 1929 Elgin pocket watch—the hour plate and screws;..crown wheel;..and an enamel face showing intricate Masonic symbols. 2. spec. A wheel in the differential gear of a motor vehicle with teeth at right angles to the wheel; the larger gear wheel in a pair of bevel gears. ΘΚΠ society > travel > means of travel > a conveyance > vehicle > powered vehicle > parts and equipment of motor vehicles > [noun] > transmission > specific gear > gear-wheel crown wheel1899 1899 Automotor & Horseless Vehicle Jrnl. June 458/2 To one end of the armature spindle is keyed a compressed leather pinion which gears with the crown wheel of the differential gear. 1908 Westm. Gaz. 29 Dec. 4/1 The transmission [of a motor-car] being by chain,..crown-wheel, and differential gears. 1990 W. A. Livesey GCSE Motor Vehicle Stud. xi. 92/1 The final drive gear ratio is the ratio of the speed of the pinion to that of the crown wheel. 2001 Automobile June 80/1 (advt.) We are gear cutters who specialise in making crownwheel & pinion sets & differential gears for all types of classic cars. This entry has been updated (OED Third Edition, June 2014; most recently modified version published online March 2022). < n.1646
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