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Volume 1, Issue 2
Displaying 1-12 of 12 articles from this issue
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Shigeki Tashiro1955 Volume 1 Issue 2 Pages 1-4
Published: 1955
Released on J-STAGE: July 08, 2008
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Masayuki Kohzaki1955 Volume 1 Issue 2 Pages 5-10
Published: 1955
Released on J-STAGE: July 08, 2008
JOURNAL FREE ACCESSDownload PDF (653K) -
Giichi Takamasa1955 Volume 1 Issue 2 Pages 11-15
Published: 1955
Released on J-STAGE: July 08, 2008
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Hiroshi Ohnishi, Isao Hayashi1955 Volume 1 Issue 2 Pages 16-23
Published: 1955
Released on J-STAGE: July 08, 2008
JOURNAL FREE ACCESSThe O. S. carding engine can increase its productivity by more than 50% over that of the conventional type without lowering the quality of carding sliver or increasing wastage. Its flat is divided into two sections, which rotate independently of each other. One worker and one stripping roller are installed at a point between the two sections of the flat.
These constructional characteristics are helpful to good carding action and control the irregularities which exist in the feeded lap.
The O. S. carding engine makes it possible to reduce operating expenses, costs of materials and inventory, depreciation reserves, and interest charges.View full abstractDownload PDF (877K) -
Choji Nozaki, Akira Aino1955 Volume 1 Issue 2 Pages 24-31
Published: 1955
Released on J-STAGE: July 08, 2008
JOURNAL FREE ACCESSThe problem of yarn irregularity has been studied over the world for 30 years. In the following articles the authors describe briefly the causes of yarn irregularity and introduce 13 methods of measurement and eight methods of evaluation referring to literatures published in various countries.View full abstractDownload PDF (850K) -
Kiyohisa Fujino, Hiromichi Kawai, Tsuneo Horino, Kihachiro Miyamoto1955 Volume 1 Issue 2 Pages 32-39
Published: 1955
Released on J-STAGE: July 08, 2008
JOURNAL FREE ACCESSApparatus available for measuring the dynamic mechanical properties of textile fibers over a range of frequency from subsonic to supersonic are described in the following article. As an example of the results of experiments with the apparatus, some findings on Nylon-6 fiber are presented briefly. From these findings it appears that the so-called “Relaxation spectrum” of Nylon-6 belongs to the category of the so-called “Box type distribution”, which is a special feature of textile fibers, at least, over a range of relaxation time corresponding to the range of frequency measured.View full abstractDownload PDF (858K) -
Ichiro Ohno, Takashi Matsumoto1955 Volume 1 Issue 2 Pages 40-44
Published: 1955
Released on J-STAGE: July 08, 2008
JOURNAL FREE ACCESSThe study described in the following article has been made with an aim to ascertain experimentally whether a two-for-one twister for silk yarn, rayor yarn, etc. can be used to twist hairy worsted yarn.
Another aim of our study has been to design a simple and economical spindle of a special type to be fitted to a two-for-one twister.
Our study has led to an economical two-for-one twisting-spindle, which has been made by slightly improving the traditional spindle for the ringtwister.
We have also contrived a new method of drawing yarn out of a yarn-package while twisting hairy worsted yarn with the newly-designed twisting-spindle.
The new method of drawing yarn out of a package, in turn, has given birth to a new twisting-machine. Equipped with a large package and being entirely automatic, the new twisting-machine increases-not decreases-productivity by 36% even when worked from 10 p.m. to 5 a.m. without an attendant.View full abstractDownload PDF (487K) -
Ryo Hirako1955 Volume 1 Issue 2 Pages 44-46
Published: 1955
Released on J-STAGE: July 08, 2008
JOURNAL FREE ACCESSThis article describes a rational method of collecting test samples for drawing up Staple Diagrams and shows a simple geometric analysis in getting the Ratio of Cut Fibres and Average Staple Length which are necessary when comparing Staple Diagrams.View full abstractDownload PDF (255K) -
Teruwaka Ogawa, Nori Matsumoto, Yukimatsu Miyamoto1955 Volume 1 Issue 2 Pages 47-53
Published: 1955
Released on J-STAGE: July 08, 2008
JOURNAL FREE ACCESSThe purpose of this article is to discuss why the draft of cotton spinning machines is affected by variations in temperature and relative humidity, and to fix a reasonable roll distance of the drafting element which will eliminate irregularity of draft.
Our inquiry has shown a correlation between the tensile strength of the fiber bundle and the unevenness of the weight of delivered sliver and roving due to variations in temperature and relative humidity. Tests of the tensile strength of sliver and roving, and measurements of the draft effeciency, have revealed that the effect of variations in temperature and relative humidity can be reduced by fixing a proper roll distance in the break draft zone and a proper degree of roller-gripping force. Application of these results to spinning machines has reduced unevenness of yarn.View full abstractDownload PDF (607K) -
Yukio Hori1955 Volume 1 Issue 2 Pages 54-57
Published: 1955
Released on J-STAGE: July 08, 2008
JOURNAL FREE ACCESSThe problem of yarn breakage during spinning is quite serious, but it is difficult to predict the number of yarn breakages, because the tension and strength of the yarn always vary. The author has used simple mathematical models of the variation of the tension and the strength of the yarn, and calculated the probability of yarn breakages. The result has shown that the variation of the yarn strength influence yarn breakages most. Thus the evenness of the yarn is needed much more than the lower tension on spinning frames to lessen the number of yarn breakages.View full abstractDownload PDF (348K) -
Torao Nakahara, Tunehiko Okamoto1955 Volume 1 Issue 2 Pages 58-63
Published: 1955
Released on J-STAGE: July 08, 2008
JOURNAL FREE ACCESSIt has not been possible to produce the same designs on both sides of an interlock knit fabric without “tucking.” A means has now been devised whereby this is possible without “tucking.” It is a “multiple-rib fabric, ” as distinct from a “double-rib fabric.” The same designs can be produced on both sides of a “multiple-rib fabric” without “tucking” but only by the use of colored yarns. A “multiple-rib” fabric has many characteristics suitable for practical use.
This article gives formulas on the production of “double-rib fabrics.”View full abstractDownload PDF (531K) -
Tomoya Ohta, Masayoshi Tanimura, Minoru Hamada, Akio Shindoh1955 Volume 1 Issue 2 Pages 64-69
Published: 1955
Released on J-STAGE: July 08, 2008
JOURNAL FREE ACCESSMany attempts hitherto made to operate rice-straw mat looms by electric power have ended in a failure, because of difficulty of picking mechanism.
We have recently made investigations, theoretically and experimentally, into the parts particularly related to picking motion and devised a suiable picking mechanism consisting of a shuttle, picker and pick cam of some special structure. The investigations have shown that the values of speed fluctuations, torqu_??_, etc., measured with an experimental model loom, coincide closely with the designed value, although there is some difference between the value of shuttle speed and its running resistance.View full abstractDownload PDF (520K)
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