Abstract: A staple fiber cutting machine has a cutter supporting member which suppo a plurality of cutters and is driven in rotation by a drive, a gap formed so that a cable can be introduced into the gap, and a pressing member which is driven in rotation during idle running of the machine, prior to introduction of a cable into the gap. The machine works so that not only the cutter supporting member rotates, but also the pressing member rotates during the starting phase or the idle running of the machine.

Abstract: A multifilament yarn of improved bulkiness is provided. The yarn is composed of two portions, i.e., a relatively dense portion and a blooming, relatively sparse portion, alternately occurring along the length of the yarn. The relatively dense portion is in a partially twisted state and individual filaments in this portion are irregularly entangled and cohere to a greater extent than in the relatively sparse portion. The relatively dense portion has protruding filament ends on the yarn surface in a larger number than the relative sparse portion.The yarn is prepared by first passing a multifilament yarn through a high velocity fluid jet nozzle and then subjecting it to a combination of the steps of false twisting and frictional contact.