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CARDING

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Originally appearing in Volume V05, Page 324 of the 1911 Encyclopedia Britannica.
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CARDING , the See also:

process of using the " card " (See also:Lat. carduus, a See also:thistle or See also:teasel) for combing textile fibrous materials. The practice of carding is of such See also:great antiquity that its origin cannot be traced. It consists in combing or brushing See also:fibres until they are straight and placed in parallel lines; in doing this, imperfect fibres are separated from perfect ones, all impurities are removed, and the See also:sound fibres are in See also:condition for further treatment. The teasels once used have See also:long given See also:place to See also:hand See also:cards, and these in turn to what, in the rudest See also:form, were known as " stock cards," namely, two See also:wire brushes, each 4 in. broad by 12 in. long, and having See also:teeth See also:bent at a See also:uniform See also:angle. One was nailed upon a See also:bench with the teeth sloping from the operator, the other was similarly secured upon a two-handled See also:bar with the teeth sloping towards the operator. The material to be treated was thinly spread upon the fixed card, and the movable one See also:drawn by hand to and fro over it. When sufficiently carded, a See also:rod furnished with parallel projecting needles, called a " See also:needle stick," was pushed amongst the card teeth to See also:strip the fibres from the See also:comb. The strip thus procured was rolled into a sliver and spun. See also:James Hargreaves, the inventor of the See also:spinning jenny, suspended the movable comb by passing two cords over pulleys fixed in the See also:ceiling and attached See also:balance weights to opposite ends of the cords. This enabled him to lengthen the cards, to apply two or three to the same stock and to manipulate the See also:top one with less labour, as well as to produce more and better See also:work. In May of 1748, See also:Daniel Bourn, of See also:Leominster, patented a See also:machine in which four parallel rollers were covered with cards, and set See also:close together. Fibres were fed to the first rotating See also:roller, each in turn See also:drew them from the preceding one, and a grid was employed to remove the carded material from the last roller.

This introduced the principle of carding with revolvin g cylinders whose surfaces were clothed with cards working point to point. In See also:

December of the same See also:year See also:Lewis See also:Paul, of See also:Birmingham, the inventor of See also:drawing rollers, patented two types of carding engines. In one, parallel rows of spaced cards were nailed upon a See also:cylinder which was revolved by a winch handle. Beneath the cylinder a See also:concave trough had a card fixed on the inside, so that as the fibres passed between the two See also:series of teeth they were combed. This was the origin of "See also:flat-carding," namely, nailing strips of stationary cards upon transverse pieces of See also:wood and adjusting the strips or flats by screws to the cylinder. In 1762, the See also:father of See also:Sir See also:Robert See also:Peel, with the assistance of Hargreaves, erected and used a cylinder carding See also:engine which differed in some important particulars from Bourn's invention. But although roller-carding and flat-carding are the only principles in use at the See also:present See also:time, to Sir See also:Richard See also:Arkwright belongs the merit of introducing an automatic carding engine, for between the years 1773 and 1775 he combined the various improvements of his predecessors, entirely remodelled the-CARDS, PLAYING machine, and added parts which made the operation continuous. So successful were these cards that some of them were in use at the beginning of the present See also:century. Not-withstanding the numerous and important changes that have been made since Arkwright's time, carding remains essentially the same as established by him. (See See also:COTTON-SPINNING MACHINERY.) (T. W.

End of Article: CARDING

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