. 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. r on the bobbin, thering rail moves gradually up and down in such a manner thatthe bobbin is built in the conical shape produced by the mule(see next section). With this object the ascent of the ring railis slow, the downward stroke quicker, and in addition the liftof the r
. 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. r on the bobbin, thering rail moves gradually up and down in such a manner thatthe bobbin is built in the conical shape produced by the mule(see next section). With this object the ascent of the ring railis slow, the downward stroke quicker, and in addition the liftof the ring rail is diminished by the thickness of one threadafter each layer has been wound. The surprising advance made by the ring frame in com-petition with fly frames and self-actors is entirely due to theextensive development of the spindles. The very high speed(6,coo, 10,000 to 13,000 revolutions per minute) of the ringspindle necessitates a perfect and thoroughly reliable spindlebearing, and a reduction of wear in this part by means of longbearings, diminished pressure and continuous lubrication of TEXTILE RAW MATERIALS. 187 the surfaces under friction. The new ring spindles are therefore made on the self-contained bolster and footstep bearing principle. The simplest of this class of spindle is the so-called Rabbeth. Figs. log and no.—The Rabbeth Spindle (vertical section and elevation). spindle, shown in Figs. 109 and 110. The steel spindle, a, whichtapers off at both ends, is provided with a firmly attachedsleeve, d, fitted with a whorl, b, and serving to carry thebobbin, c. The actual bearing, c, is made of cast iron, screwed 188 TEXTILE RAW MATERIALS. on to the spindle rail,/, and contains the bolster bearing, space, /z, forms the oil reservoir ; and i is a hook whichprevents the spindle from drawing- out when the bobbin(represented in the fig. by a conical roll made of paperband) is doffed. When wooden bobbins are used a brass cup is placed onthe whorl, d, in orde
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Keywords: ., bookcentury1900, bookdecade1900, booksubjecttextile, bookyear1901
