rack hookn.²

Brit.

/ˈrak hʊk/, U.S.

/ˈræk ˌ(h)ʊk/

Origin: Formed within English, by compounding. Etymons: rack n.⁴, hook n.¹

Etymology: < rack n.⁴ + hook n.¹

Clockmaking.

A hooked lever which engages in the rack of the striking mechanism of a clock.

ΘΚΠ

the world > time > instruments for measuring time > clock > [noun] > part(s) of

nut1428

peise1428

plumbc1450

Jack1498

clockwork1516

larum1542

Jack of the clockhouse1563

watch-wheel1568

work1570

plummeta1578

Jack of the clock1581

snail-cam1591

snail-work1591

pointer1596

quarter jack1604

mainspring1605

winder1606

notch-wheel1611

fusee1622

count-wheel1647

jack-wheel1647

frame1658

arbor1659

balance1660

fuse1674

hour-figure1675

stop1675

pallet1676

regulator1676

cock1678

movement1678

detent1688

savage1690

clock1696

pinwheel1696

starred wheel1696

swing-wheel1696

warning-wheel1696

watch1696

watch-part1696

hoop-wheel1704

hour-wheel1704

snail1714

step-wheel1714

tide-work1739

train1751

crutch1753

cannon pinion1764

rising board1769

remontoire1774

escapement1779

clock jack1784

locking plate1786

scapement1789

motion work1795

anchor escapement1798

scape1798

star-wheel1798

recoil escapement1800

recoiling pallet1801

recoiling scapement1801

cannon1802

hammer-tail1805

recoiling escapement1805

bottle jack1810

renovating spring1812

quarter-boy1815

pin tooth1817

solar wheel1819

impulse-teeth1825

pendulum wheel1825

pallet arbor1826

rewinder1826

rack hook1829

snail-wheel1831

quarter bell1832

tow1834

star pulley1836

watch train1838

clock train1843

raising-piece1843

wheelwork1843

gravity escapement1850

jumper1850

vertical escapement1850

time train1853

pin pallet1860

spade1862

dead well1867

stop-work1869

ringer1873

strike-or-silent1875

warning-piece1875

guard-pin1879

pendulum cock1881

warning-lever1881

beat-pin1883

fusee-piece1884

fusee-snail1884

shutter1884

tourbillion1884

tumbler1884

virgule1884

foliot1899

grasshopper1899

grasshopper escapement1899

trunk1899

pin lever1908

clock spring1933

1829 I. Brown Brit. Patent 5851 (1856) 10 The rack hook k, has a curved tail that comes in contact with a short arm of the regulating lever.

1881 F. J. Britten Watch & Clockmakers' Handbk. (ed. 4) 114 The rack hook is lifted free of the first tooth only at the half-hour.

1958 Chambers's Techn. Dict. (ed. 3) 697 Just before the hour, the lifting piece lifts the rack hook, which allows the rack to fall.

1977 E. Smith Clocks vi. 150 The rack is kept from falling back as it is gathered up by a pivoted lever, an unsprung click, which catches in the rack's teeth and is known as the rack hook.

This entry has been updated (OED Third Edition, June 2008; most recently modified version published online March 2022).

单词	rack hook
释义	rack hookn.² Brit. /ˈrak hʊk/, U.S. /ˈræk ˌ(h)ʊk/ Origin: Formed within English, by compounding. Etymons: rack n.⁴, hook n.¹ Etymology: < rack n.⁴ + hook n.¹ Clockmaking. A hooked lever which engages in the rack of the striking mechanism of a clock. ΘΚΠ the world > time > instruments for measuring time > clock > [noun] > part(s) of nut1428 peise1428 plumbc1450 Jack1498 clockwork1516 larum1542 Jack of the clockhouse1563 watch-wheel1568 work1570 plummeta1578 Jack of the clock1581 snail-cam1591 snail-work1591 pointer1596 quarter jack1604 mainspring1605 winder1606 notch-wheel1611 fusee1622 count-wheel1647 jack-wheel1647 frame1658 arbor1659 balance1660 fuse1674 hour-figure1675 stop1675 pallet1676 regulator1676 cock1678 movement1678 detent1688 savage1690 clock1696 pinwheel1696 starred wheel1696 swing-wheel1696 warning-wheel1696 watch1696 watch-part1696 hoop-wheel1704 hour-wheel1704 snail1714 step-wheel1714 tide-work1739 train1751 crutch1753 cannon pinion1764 rising board1769 remontoire1774 escapement1779 clock jack1784 locking plate1786 scapement1789 motion work1795 anchor escapement1798 scape1798 star-wheel1798 recoil escapement1800 recoiling pallet1801 recoiling scapement1801 cannon1802 hammer-tail1805 recoiling escapement1805 bottle jack1810 renovating spring1812 quarter-boy1815 pin tooth1817 solar wheel1819 impulse-teeth1825 pendulum wheel1825 pallet arbor1826 rewinder1826 rack hook1829 snail-wheel1831 quarter bell1832 tow1834 star pulley1836 watch train1838 clock train1843 raising-piece1843 wheelwork1843 gravity escapement1850 jumper1850 vertical escapement1850 time train1853 pin pallet1860 spade1862 dead well1867 stop-work1869 ringer1873 strike-or-silent1875 warning-piece1875 guard-pin1879 pendulum cock1881 warning-lever1881 beat-pin1883 fusee-piece1884 fusee-snail1884 shutter1884 tourbillion1884 tumbler1884 virgule1884 foliot1899 grasshopper1899 grasshopper escapement1899 trunk1899 pin lever1908 clock spring1933 1829 I. Brown Brit. Patent 5851 (1856) 10 The rack hook k, has a curved tail that comes in contact with a short arm of the regulating lever. 1881 F. J. Britten Watch & Clockmakers' Handbk. (ed. 4) 114 The rack hook is lifted free of the first tooth only at the half-hour. 1958 Chambers's Techn. Dict. (ed. 3) 697 Just before the hour, the lifting piece lifts the rack hook, which allows the rack to fall. 1977 E. Smith Clocks vi. 150 The rack is kept from falling back as it is gathered up by a pivoted lever, an unsprung click, which catches in the rack's teeth and is known as the rack hook. This entry has been updated (OED Third Edition, June 2008; most recently modified version published online March 2022). < n.²1829
随便看	frequencymodulated frequencymultiplying frequencyselective frequent frequent flyer frequent to frequentable frequentage frequentance frequentation frequentations frequentative frequentatives frequented frequenter frequenters frequentest frequenting frequentist frequentless frequentlier frequentliest frequently frequently asked question frequentness

rack hookn.2

rack hookn.²