. 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. Fig. 139.—Gilling Machine for Flax (vertical longitudinal section). broad. The lower feed rollers alone are driven, the upper setbeing heavily weighted and moving slowly by friction. Be-tween them they seize the sliver and convey it to the gills, e,consisting of about fifty
. 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. Fig. 139.—Gilling Machine for Flax (vertical longitudinal section). broad. The lower feed rollers alone are driven, the upper setbeing heavily weighted and moving slowly by friction. Be-tween them they seize the sliver and convey it to the gills, e,consisting of about fifty-two metal bars or fallers, / (see alsoFig. 141), which, at four places, each extending for a length of. Fig. 140.—Flax Gilling Machine (plan view). four to six inches, are fitted with two rows of sharp-pointedsteel hackling pins about as large as sewing needles. Thesefallers are set in motion, in their proper order and at suitablespeed, by two pairs of endless screw spindles, g, h, in the 248 TEXTILE RAW MATERIALS. threads of which the ends of the fallers are mounted. Theworking field usually consists of thirty-six fallers, which aredriven forward up the incline and draw out the flax, the fibresof which are pressed down in the gills by a light roller, i. Thefibres are thus delivered to the quick-running draft rollers, k, /,which further attenuate the sliver. The lower roller is of castiron, and is driven by gearing, whilst the upper one, of hardalder (or pear) wood, is heavily weighted and runs by frictionalcontact. The surface of these rollers is kept clean by thefelt-covered wooden rails, m, which are pressed against thecircumference of the rollers by the influence of weighted lever
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Keywords: ., bookcentury1900, bookdecade1900, booksubjecttextile, bookyear1901
