. The principles and processes of cotton yarn manufacture. ^ them, passed through calender rolls, and formed into a lap aspreviously described. The finisher picker or lapper is the exact counter-part of the intermediate, and in mills, where the production is small, thesame machine may be used to perform both processes. Fig. 27 shows asectional view of the finisher or intermediate lapper. The close resem-blance to the breaker lapper will be seen and the differences usuallyrecognized. The one shown is a German and English type. Americanmakers now commonly construct the dust cages of the same siz
. The principles and processes of cotton yarn manufacture. ^ them, passed through calender rolls, and formed into a lap aspreviously described. The finisher picker or lapper is the exact counter-part of the intermediate, and in mills, where the production is small, thesame machine may be used to perform both processes. Fig. 27 shows asectional view of the finisher or intermediate lapper. The close resem-blance to the breaker lapper will be seen and the differences usuallyrecognized. The one shown is a German and English type. Americanmakers now commonly construct the dust cages of the same size. All through the picker room processes the aim is to remove all theforeign substances from the cotton, and to produce a roll of cotton everjyard of which should be of a uniform weight and thickness. At the sametime it is essential that the cotton fibres be not injured. A consideration. Fig. 27. of each object above set forth may well be made here, and importantprinciples of working be emphasized. Cleaning, as already described, is done by means of beaters, grid barsand dust cages, and can be only partially regulated after the machine hasbeen constructed. There must be a relation between the beaters and thegrid bars beneath, but this relation is usually fixed by the machine makerand is unchangeable. The grid bars, within whose action the cotton firstcomes, are placed nearer to the beater than those farther around. Theirinclination is also sharper. Sonie machine builders make it possible toadjust the grid bars in their relation, both to the beater and to each principle underlying their adjustment is that the dirtier the cotton,the nearer must the grid bars approach the line of action of the beater,yet never must they be so near as to injure the fibre. The length of thefibre and the thickness of the sheet of cotton will be additional factors in 32 COTTON YARN
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Keywords: ., bookauthorwinchest, bookcentury1900, bookdecade1900, bookyear1902
