The art of weaving, by hand and by power, with an introductory account of its rise and progress in ancient and modern times . s of novelty in this part of Mr. Croftss ma-chinery are, the points and hooks above described, for selecting anddrawing up the threads ; the application of the additional back LACE MANUFACTURE. 281 points, for the purpose of keeping the spots and meshes of the netin correct form ; and also in arranging the various parts of the ad-ditional machinery, which is requisite for working spots in bobbin-net lace; also, in combining such arranged spotting machinery,with the usua
The art of weaving, by hand and by power, with an introductory account of its rise and progress in ancient and modern times . s of novelty in this part of Mr. Croftss ma-chinery are, the points and hooks above described, for selecting anddrawing up the threads ; the application of the additional back LACE MANUFACTURE. 281 points, for the purpose of keeping the spots and meshes of the netin correct form ; and also in arranging the various parts of the ad-ditional machinery, which is requisite for working spots in bobbin-net lace; also, in combining such arranged spotting machinery,with the usual parts of rotary machinery, so that the spotting ma-chinery may be put in action to produce patterns in the lace, by thesame rotary impulse which causes the plain net to be made, throughthe ordinary evolutions of the machinery to which the spotting ap-paratus is appended ; and also in arranging in like manner, thevarious parts of spotting machinery, so as to dispense with anyselection of particular bobbins and carriages, and combining sucharranged spotting machinery with the ordinary fluted roller machi-nery. Fig. The improvements shown in Fig. 137, consist in a method of 36 282 THE ART OF WEAVING. combining the spotting machinery with ordinary fluted roller ma-chinery. In fluted roller machinery, no selection can be made ofthe bobbin carriages, which are to be used in spotting : becauseall the carriages must go backward and forward, in complete rows;therefore, whilst the spotting is going on, all the warp threads mustremain motionless, without shogging, except those particular warpthreads which are hooked up to form spots. To effect the shogging of particidar warp threads, four extraseries of guides and guide bars, marked w, x, y, z. arc provided andare applied close against the ordinary guide bars f, t. in the usualmanner of applying extra guide bars, for selvage threads. A rackingor shogging motion is given to two of these extra guide bars ateach time of spotting. In
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Keywords: ., bookcentury1800, bookdecade1840, booksubjectweaving, bookyear1844
