. Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics . is ol)vious that the nijifjcr of thecomb can not act as well ufion this laj) as if the thickness were uniform throughout, and fur-ther that where the thin places are there is danger of good cotton passing through into wasteon account of the defective nij); also, where the thick [ilaces conu>, the pins are required todo too much work and the quality at once suffers. When the fiatent ribboii-lapj)er is used, the sy


. Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics . is ol)vious that the nijifjcr of thecomb can not act as well ufion this laj) as if the thickness were uniform throughout, and fur-ther that where the thin places are there is danger of good cotton passing through into wasteon account of the defective nij); also, where the thick [ilaces conu>, the pins are required todo too much work and the quality at once suffers. When the fiatent ribboii-lapj)er is used, the system is as follows: The ordinary style ofdrawing-frame is thrown out entirely, and the card-slivers are doubled up into a lap directly COTTON-SPINNING MACHINERY. 141 on the small sliver-lap machine: then six of these laps are placed in the creel of the machineand areTrawn throtigh four lines of rollers in the form o a nbhon nistead of a sliver, and byana ^^^^. , ^ nlaced perfectly even and level on a polished table. X^i-rAait-S htgh railway-head with evener, first introduced by George Drape^k Sons is hardly the same as a drawing-frame, its functions are near enough like it. for it to be considered in the same class. These ^f l^i^^ ^ave been peTfected a^^^^^^ 142 COTTON-SPINNING MACHINERY. 1 belt running over cones in the usual way. Railsvay-heails and machines in the next class haveof late been provided with steel fluted rolls, haviiig collars to prevent the teeth meshing too


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Keywords: ., bookcentury1800, bookdecade189, booksubjectmechanicalengineering