(1) How to determine the staple diagram in the stretch-breaking process, including the pseudo-stretch-breaking process has been analyzed and theoretical formulas of the staple diagram are shown.
(2) When the breaking points of fibers truly stretch-broken concentrate in the position of the breaking accessory, the short fiber content of the staple diagram may possibly decreases or increases.
(3) The short fiber content on Turbo Stapler increases frequently if the probability that one breaker bar pseudo-stretch-breaks the fibers by contacting the fiber bundle only once is more than about 0.06 (assuming the front roller and the breaker bar are about 15cm apart).

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This article concerns blend irregularity along a yarn composed of two kinds of fibers. Part 1 reported that blend irregularity arose markedly in the drafting process and that it was very similar in characteristics to the thickness irregularity of drafted slivers. Part 2 evaluated the model of the drafting process by means of a block diagram and analyzed it by the simulation method.
The present instalment concerns study of the mechanical properties of blended fibers and statistically analyzes shorter-period thickness irregularity and blend ratio irregularity caused by drafting. 1. The distribution of the thickness of a blended yarn and its component in each cross section fit in with the normal distribution or the gamma distribution. 2. Assuming that a thickness irregularity curve is a triangular wave having a period of two times the average fiber length, and that the distribution of thickness of each yarn section fits in with the normal distribution, then the probability density function of the minimum value of thickness along the yarn cut into a constant length which is integer times the period in thickness irregularity can be obtained.

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This report collects and arranges the technical papers and data on the knitting elements and knitting motions of circular knitting machines. The knitting motions of knitting machines are classified into the 6 primary motions of knitting machines and 4 supplementary motions. These motions are transfererd by triangular cams to the knitting needles. The knitting needles are the most important knitting element for the circular knitting machines. There have been, therefore, a good many published works on the needles and cams. They are important data for designging and adjusting of the machines.

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The load distribution and the deflection of rubber-covered pressure rollers running together under pressure are investigated analytically under the assumptions which simplify mathematical treatment. In this series of investigations, the authors deal with the problems exclusively in the case of symmetric bending where the deflections of a pair of pressure rollers are the same.
Basic equations on the bending of covered rollers have been derived by modifying the theory of bending of beams on an elastic foundation. They have been solved for pressure rollers supported at both ends and for those supported at the center. As a result, it is proved that the flexure of covered rollers is determined by two dimensionless parameters which are the ratios of the stiffness of three principal components of mangles.
The theory thus derived is easily extended to explain the flexural behavior of pressure rollers having a multiple-layer covering. The bending of covered rollers which process a sheet of material between them has been investigated as a special case of the mutual contact of two pressure rollers having a multiple-layer covering. It has been revealed that fabrics processed by a conventional mangle have no appreciable effect on the flexure of pressure rollers.
Another application of the theory has been attempted to clarify the effect of end shafts fixed to the ends of the core of conventional type rollers supported at both ends. The presence of end shafts makes the working width of the covered rollers and the distance between the supports unequal, and renders the mangle less rigid. This deterioration of nip uniformity has been calculated and some numerical results are explained.

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