. 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. , a^, a^, etc.), from the finisher card, are passed throughguide holes in a rail, c, into the machine, and are drawnby the feed rollers, d, e, over the one end of movable spoonlevers,/. The united slivers then pass through the drawing. Fig. gg.—Cotton Drawing Frame (vertica
. 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. , a^, a^, etc.), from the finisher card, are passed throughguide holes in a rail, c, into the machine, and are drawnby the feed rollers, d, e, over the one end of movable spoonlevers,/. The united slivers then pass through the drawing. Fig. gg.—Cotton Drawing Frame (vertical section). rollers, of which there are here four pairs, /, g, h, i, the speedof which is graduated so as to draw out the sliver longitud-inally, and thus effect the desired degree of attenuation ; andas the cotton fibres are thereby compelled to slide by oneanother, they are, consequently, obliged to straighten outmore and more, and assume a parallel position. A pairof delivery, or calender rollers, k, draws the resulting sliverthrough the conical extremity, /, of a swing lever, in, and 1/2 TEXTILE RAW MATERIALS. delivers it through an opening, n, in the fixed head of thepresser, to ensure its uniform deposition in the coihng can,0. The presser works in the manner already described indealing with the finisher card. The coupled bottom rollersof the drawing frame are of hardened steel, and are heavily weighted upper rollers—pressure rollers—are alsoof steel, but are covered with flannel and varnished leather,and are thereby enabled
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Keywords: ., bookcentury1900, bookdecade1900, booksubjecttextile, bookyear1901
