Cyclopedia of textile work : a general reference library on cotton, woolen and worsted yarn manufacture, weaving, designing, chemistry and dyeing, finishing, knitting, and allied subjects (1907)
Chicago : American Technical Society · leaf 257
rolls. Between the middle and front rolls what is termed a porcupine roll is placed. There are a number of brass rings, through which steel pins are inserted, fixed on the porcupine roll, hence its name. The sliver passing from the back and middle rolls to the front roll passes between these pins,… … Fig. 129. First and Second Frencli Drawing Frames. than the nip of the rolls. The reason for this is to support the slivers and to ensure a thorough combing. The greatest care is needed in setting these machines, to be sure that the porcupine rollers are placed in their correct position or eleva-…
Textile industry · Textile fabrics · Textile industry -- Encyclopedias · Textile fabrics -- Encyclopedias
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
