. 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. bracket, c), and at the lower endin a socket, d, on the bearing frame, e, is caused to rotate bythe action of cone wheels, /, g, actuated by the shafting, h,which is fitted with fast and loose pulleys, k, i. On this shaftis mounted the double blade, /, which carries round w
. 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. bracket, c), and at the lower endin a socket, d, on the bearing frame, e, is caused to rotate bythe action of cone wheels, /, g, actuated by the shafting, h,which is fitted with fast and loose pulleys, k, i. On this shaftis mounted the double blade, /, which carries round with itthe conical rollers, m, n, revolving on the arms, 0, p, hinged onto /. As the shaft rotates, the rollers are carried round andrevolve in the annular trough, q, on their own axis. Theplaited tresses of hemp laid out radially on the bed of thetrough are frequently turned while the machine is at work, z^ TEXTILE RAW MATERIALS. and are left exposed to the rubbing, pressing and crushingaction of the rollers until they begin to get warm. The woodenbed, q, consists of blocks, r, set on end upon a heavy stonefoundation, s; Ms the mill-room floor. 3. Cutting.—The crushed hemp is generally too long (40to 70 inches) to be spun with advantage ; it is thereforedivided into two or three equal parts by tearing or Fig. 19.—Hemp Crusher (view and vertical section). This is performed in a tearing or cutting machine, such asis shown as a vertical section in Fig. 20. The principal partsof this double-sided machine are—attention being first devotedto the left-hand side—the two pairs of grooved or frictionpulleys, ah and cd, and the intermediately situated cuttingdisc,/, armed on its circumference with cylindrical steel pegs. TEXTILE RAW MATERIALS. 37 e. A vertical section of the two pairs of grooved pulleys isshown in Fig. 21 ; and the dotted line, g, indicates the central
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Keywords: ., bookcentury1900, bookdecade1900, booksubjecttextile, bookyear1901
