| 单词 |
over-wind |
| 释义 |
over-wind, v.|ˌəʊvəˈwaɪnd|
[over- 26.]
trans. To wind too tight, as in tuning a musical instrument; to wind (a watch, or other mechanism) beyond the stop or point at which it is fully wound up; to wind too far; in Mining, to wind (the rope or chain bearing the cage) above its proper place so that the cage is drawn over the drum.
1682Dryden Dk. of Guise iii. i, Love to his tune my jarring heart would bring, But reason over-winds and cracks the string. 1717Entertainer No. 19. 128 Like a Watch over-wound he strains his Voice. 1816L. Hunt Rimini iii. 529 His wearied pulse felt over-wound. 1883Gresley Gloss. Coal Mining, Overwind, to draw a cage or bowk up into the headstocks.
Hence ˌover-ˈwound |-ˈwaʊnd|, erron. ˌover-ˈwinded ppl. a.; ˌoverˈwinding vbl. n., also attrib. overwinding check (see quot. 1884). Also ˈoverˌwinder, (a) attrib. = overwinding above; (b) a device which guards against overwinding.
1858Morris Geffray Teste-Noire Poems 145 So piercing sharp That joy is, that it marcheth nigh to sorrow, For ever, like an overwinded harp. 1884Knight Dict. Mech. Suppl., Over-winding Check, a device to cast loose a cage from the hoist when a certain height is attained, to avoid accident by carrying the cage over the drum. Ibid., In the overwinder check at the Justice mine on the Comstock..the cage moves a lever and half the steam is shut off at the engine. 1896Westm. Gaz. 20 Feb. 5/1 Eight miners have been killed through the overwinding of a cage at the West Leigh Colliery Lancashire. 1912McCulloch & Futers Winding Engines xv. 328 On overwinders working in pits in which double or treble decking takes place, a ‘fourth attachment’ is added. 1935G. Poole Haulage & Winding xiii. 309 If..the cage is exceeding the predetermined speed at a particular point, the speed hook engages with the winged nut moving on the screw, and the overwinder comes into action. 1958I. C. F. Statham Coal Mining Pract. II. iv. 343 The Whitmore overwinder is shown in Fig. 59, from which it may be seen that there is a separate swinging overspeed arm and travelling nut for each cage or skip. |
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