. Textile raw materials and their conversion into yarns : (the study of the raw materials and the technology of the spinning process) a text-book for textile, trade and higher technical schools, as also for self-instruction ; based upon the ordinary syllabus and curriculum of the Imperial and Royal Austrian weaving schools. lving flat card. In order to auto-matically clean the cylinder itself a second licker-in, s, is placed TEXTILE RAW MATERIALS. 163 below the first, and below this again a cleaning-roller, t, which,revolving at a higher velocity than the cylinder, cleans thelatter of fibres,
. Textile raw materials and their conversion into yarns : (the study of the raw materials and the technology of the spinning process) a text-book for textile, trade and higher technical schools, as also for self-instruction ; based upon the ordinary syllabus and curriculum of the Imperial and Royal Austrian weaving schools. lving flat card. In order to auto-matically clean the cylinder itself a second licker-in, s, is placed TEXTILE RAW MATERIALS. 163 below the first, and below this again a cleaning-roller, t, which,revolving at a higher velocity than the cylinder, cleans thelatter of fibres, and transfers them to s, whence they arereturned to the cylinder. A grid, u, placed underneath thecylinder, enables dust, other impurities and short fibres tomake their escape. 3. The Combination or Union Card. Whereas in double carding the roller card is particularlysuitable as a breaker, and the flat card as a finisher in theproduction of fine yarns, the combination or union card isadvisable for use in single carding inferior cotton. This typeof carder unites in itself the higher productive capacity ofthe roller card with the advantages of the flat card, inasmuchas it not only yields a cleaner fleece, but also because theresulting yarn is less rough in appearance than those producedsolely by means of roller Fig. 91.—The Combination or Union Card (longitudinal vertical section). The arrangement and working of the union carder canbe readily gathered from the longitudinal vertical section,shown in Fig. 91, and need no further description than [64 TEXTILE RAW MATERIALS. that already given in respect of the two systems thereincombined. Cleanins:, Grindins^ and Setiins: Card Clothins. This operation is performed from time to time, in orderto clear the rollers and cylinder from the cotton fibres andimpurities (cleaning waste) accumulated in the card clothing,
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Keywords: ., bookcentury1900, bookdecade1900, booksubjecttextile, bookyear1901
