单词 | rag wheel |
释义 | rag wheeln. 1. Mechanics. A wheel with projections around the rim that catch into the links of a chain passing over it, as in a chain pump; a sprocket wheel. Now historical.In quot. 1672: a wheel whose projections engage in and so turn another wheel. ΘΚΠ society > occupation and work > equipment > machine > parts of machines > wheel > [noun] > cog or gear > used with chain fusee1622 rag wheel1656 fuse1674 rag1705 sprocket wheel1765 chain-wheel1845 chain geara1877 trammel-wheel1877 1656 Rep. Petition W. Potter (P.R.O. SP 18/124/100) f. 170 An engine for Raysing of water by Tankards Barrells Buckits or other vessells..hanging upon a chayne and turning about with a continuall motion upon a Ragge wheele and lying shaft. 1672 G. Sinclair Hydrostaticks 299 There is an outter-wheel moved..by the water of the river: upon the end of the axle-tree of which wheel there is a ragg-wheel, turning vertically as doth the outer wheel. This ragg-wheel by a nutt or trinle turns another which moves horizontally. 1734 J. T. Desaguliers Course Exper. Philos. I. 76 This is of Use in a Chain of Buckets going round an Axis or Rag-wheel to draw Water from a Depth and deliver it in a Trough above. 1759 B. Martin Nat. Hist. Eng. I. i. 10 Here great Labour is required in digging away the Earth, and producing artificial Streams of Water by Means of Rag-Wheels and other Contrivances. 1812 Niles' Reg. 2 393/2 A rag wheel [of a mill machine] of three feet diameter is kept in complete motion. 1873 J. M. Bailey Life in Danbury 9 He employed a carpenter from a place twenty miles distant to make a new rag-wheel. 1995 Technol. & Culture 36 241 The technology of colliery drainage shows a fine and satisfying logic. Inheriting a system of mill, rotating chain, and buckets, it first replaced buckets by a pipe, keeping chain and rotation. Next, chain and rag wheel gave way to spears and beam. 2. A polishing wheel of a soft material, typically rags. ΘΚΠ the world > physical sensation > cleanness and dirtiness > cleaning > polishing > [noun] > implement for polishing > implements for polishing metal Flanders tilea1399 white brick1468 Flanders brick1651 scratch-brush1797 buff1831 Bath-brick1837 scratch card1839 buffer1854 rag wheel1869 bob1879 buff-stick1881 scratch-knot1905 1869 Manufacturer & Builder Nov. 327/3 Thence they [sc. spoons and forks] go to the buffing-room, to undergo a course of rag-wheels and rouge, which impart the finish. 1945 J. Sasso & M. A. Brown Plastics in Pract. 140/2 Finishing operations are confined to removing the flash and light rag-wheel polishing. 1998 Product News Network (Nexis) 1 Jan. It is available in 3 lb. tubes and is an ideal polishing compound for cloth belts and rag wheels. This entry has been updated (OED Third Edition, June 2008; most recently modified version published online March 2022). < n.1656 |
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