. 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. with a row of about 120 spindles and their double frame of this kind is shown in vertical section inFig. 107. The bobbins filled with rove are mounted in two adjoiningrows on wooden spindles in a frame or creel. From eachbobbin, a, a rove thread, a, is passe
. 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. with a row of about 120 spindles and their double frame of this kind is shown in vertical section inFig. 107. The bobbins filled with rove are mounted in two adjoiningrows on wooden spindles in a frame or creel. From eachbobbin, a, a rove thread, a, is passed into the drawing mechan-ism, b, which is of the usual type, and attenuates the threadto the necessary degree of fineness. After leaving the finalpair of rollers the thread is passed through a wire eye, c, onthe hinged eyeboard, c\ and then vertically downwards to thespindle, d. Here the thread enters into the flyer head at thetop, e, and issues again at /, afterwards taking two or threeturns about the one limb of the flyer, g, and finally arriving at TEXTILE RAW MATERIALS. 183 the bobbin, h, though sometimes the thread is passed directfrom the eye, c, to the limb of the flyer. The bobbin isplaced loosely on the spindle, its lower flange resting on thebobbin rail, i, sufficient friction being set up between them s. -Double Fly Frame (vertical section). by means of the interposed leather or felt washer, k, to offera corresponding resistance to the revolution of the rapid speed of the spindle twists the thread comingfrom the drawing rollers, and winds it on the bobbin as fast 184 TEXTILE RAW MATERIALS. as it comes. As,, however, the spindle has to run at a muchquicker rate than is required for mere winding, it draws thebobbin round in its train by the intervening length of thread,and thus sets the bobbin rotating, though at a much lowerspeed than the spindle itself. Consequently the thread hasnot only to overcome the dead weight of the bobbin, but alsothe friction bet
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Keywords: ., bookcentury1900, bookdecade1900, booksubjecttextile, bookyear1901
