Cotton weaving: its development, principles, and practice . Fig. 171.—Shewing Gearing-End and Cover Removed. In the larger machines the quantity can be increased to300 lb., the time for dyeing being no longer. The vat is charged with dye liquor from the pan on theleft-hand side of the machine, figs. 170, 172, in which thedye-stuff is dissolved, and from which it passes into thevat whilst the machine is in operation. There is no need towithdraw the yarn from the vat whilst the fresh dye liquoris being added, as is the case in the skein-dyeing machines 308 COTTON WEAVING. generally in use. The r
Cotton weaving: its development, principles, and practice . Fig. 171.—Shewing Gearing-End and Cover Removed. In the larger machines the quantity can be increased to300 lb., the time for dyeing being no longer. The vat is charged with dye liquor from the pan on theleft-hand side of the machine, figs. 170, 172, in which thedye-stuff is dissolved, and from which it passes into thevat whilst the machine is in operation. There is no need towithdraw the yarn from the vat whilst the fresh dye liquoris being added, as is the case in the skein-dyeing machines 308 COTTON WEAVING. generally in use. The revolution of the yarn cylinderquickly and thoroughly diffuses the added liquor through-out the vat, immediately making it all of uniform the machine has been charged, and sufficient dye-stuff has been added to match the shade required, nofurther attention is needed until the dyeing is finished. Fig. 172.—Shewing Feed-Pan. and the yarn is ready to be removed. Here, too, a gainof time results from the power of adding the dye-stuffwithout stopping the machine. Having loaded the machines, the attendant can peiformother work, and his boy assistant can attend to from twoto four machines, having nothing to do after helping toload and unload until it is time to take a matching off YARN BLEACHING AND DYEING. 309 for the dyer to compare with his pattern. This is done asquickly as by the open vat process. It is part of theboys duty also to attend to the alarm bell5 but this maynot be heard more than once in a week. The boy inattending to these machines does the work of many menon the old systems, and the gain from the saving oflabour alone in one year will more than recompense theoutlay upon the machine. Even in dyeing small lots thelabour of the boy displaces that of two men. In dyeing by open vats it is well known that the tem-perature cannot be raised above 204 degs. without theya
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