Search over 40,000 articles from the original, classic Encyclopedia Britannica, 11th Edition.
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: 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. Additional information and CommentsThere are no comments yet for this article.
» Add information or comments to this article.
Please link directly to this article:
Highlight the code below, right click, and select "copy." Then paste it into your website, email, or other HTML. Site content, images, and layout Copyright © 2006 - Net Industries, worldwide. |
|
[back] CARDINAL VIRTUES (Lat. cardo, a hinge; the fixed po... |
[next] CARDIOID |