请输入您要查询的英文单词:

 

单词 overcoil
释义

overcoiln.

Brit. /ˈəʊvəkɔɪl/, U.S. /ˈoʊvərˌkɔɪl/
Origin: Formed within English, by derivation. Etymons: over- prefix, coil n.3
Etymology: < over- prefix + coil n.3
Watchmaking and Clockmaking.
The last coil of a Breguet hairspring, having the outer quarter turn raised and curved towards the centre to improve timekeeping.
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
1881 F. J. Britten Watch & Clockmakers' Handbk. (ed. 4) 63 The overcoil of a Breguet spring..is sometimes carried much farther into the spring. In some springs it is not unusual to see the overcoil more than a complete turn in extent.
1884 F. J. Britten Watch & Clockmakers' Handbk. (new ed.) 181 Overcoil, the last coil of a Bréguet spring which is bent over the body of the spring.
1929 G. H. Baillie Watches vii. 168 Properly, a Breguet spring should have no regulating curb pins, because the curve of the overcoil is correct only when it is of one definite length.
1948 A. L. Rawlings Sci. Clocks & Watches (ed. 2) ix. 179 By making the overcoil the right shape, it is possible to cause the spring to dilate equally all round as the balance swings; or, by modifying the shape, it can be caused to dilate most in one direction like a flat spring.
1984 Antiquarian Horol. Dec. 149/2 The balance spring has a self-adjusting stud clamped by a cover and has a Breguet overcoil.
This entry has been updated (OED Third Edition, December 2004; most recently modified version published online March 2022).
<
n.1881
随便看

 

英语词典包含1132095条英英释义在线翻译词条,基本涵盖了全部常用单词的英英翻译及用法,是英语学习的有利工具。

 

Copyright © 2004-2022 Newdu.com All Rights Reserved
更新时间:2024/12/24 10:13:49