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单词 endless screw
释义

> as lemmas

endless screw
b. Mechanics. endless band, endless-cable, endless-chain, endless-strap: one whose ends are joined for the purpose of continuous action over wheels, etc. endless knife, endless saw: a continuous band of steel with either a sharp, or a toothed edge for a similar purpose. endless screw: a short length of screw revolving on an axis, by which continuous motion is imparted to a toothed wheel.
ΘΚΠ
society > occupation and work > equipment > machine > parts of machines > wheel > [noun] > cog or gear > with endless screw > endless screw
endless screw?1575
perpetual screw1648
worm1730
?1575 R. Eden tr. J. Taisnier Bk. Nauigation Ded. sig. ⁂3 An engin..wherewith a man with the strength of onely one hande, by helpe of the instrument called Trispaston (which in our tongue some cal an endlesse Scrue), brought a Shyp..from the lande into the sea.
1815 J. Smith Panorama Sci. & Art I. 98 A rapid motion is communicated..by means of an endless strap from a large fly wheel.
1822 T. Webster Imison's Elem. Sci. & Art (new ed.) I. 58 Screws with sharp threads, have more friction than those with square threads; and endless screws have more than either.
1833 J. Holland Treat. Manuf. Metal II. 144 (Cabinet Cycl.) Projecting points..acting in the links of an endless chain.
1867 J. Hogg Microscope (ed. 6) i. ii. 142 By a slight variation in their positions produced by an endless-screw motion.
1884 Internat. Health Exhib. Official Catal. 113/1 One Brazing Machine for endless knives.
1885 Law Times 80 101/1 The cloth..being caught in an endless leathern band running over a pulley on the shaft.
1887 Daily News 8 Feb. 6/3 The cars will be worked on the successful endless-cable principle.
extracted from endlessadj.adv.
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