Journal of the Textile Machinery Society of Japan
Online ISSN : 1881-1159
Print ISSN : 0040-5043
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Volume 22, Issue 4
Displaying 1-6 of 6 articles from this issue
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  • Open-End Spinning Frames Driven by Air-Jet
    Part 1: Driving Methods for Obtaining High Speed Rotation
    Akira Horikawa, Osamu Yaida, Toshiyuki Shimizu, Noriyuki Sugiura
    1976 Volume 22 Issue 4 Pages 81-86
    Published: 1976
    Released on J-STAGE: October 24, 2006
    DOIhttps://doi.org/10.4188/jte1955.22.81
    JOURNAL FREE ACCESS
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    Various devices driven and supported by air jet were tested for a high speed open-end spinning frame. Two types of rotors were prepared: the upper fluting rotor and the under fluting rotor. Each rotor was driven by air jet running against the fluting directly from the nozzles drilled on the inner surface of a stator. The rotor was supported by the dynamic pressure of air. A series of tests were made by changing conical angles, number and angle of the flutings, and driving air pressure. The results were as follows.
    (1) The rotor speed increases with increasing the air pressure. (2) When the stator conical angle is 92°, the optimum rotor conical angle is 108° for the upper fluting, and 102° for the under fluting. (3) The suitable number of flutings is about 40 for the upper fluting, and 20 for the under fluting. (4) The angle of flutings exerts influence considerably on the driving torque, and the most suitable angle is 45° for the upper fluting, and 25° for the under fluting.
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  • Vibrations Caused by Looms
    Noboru Inui, Hidenori Yokoi
    1976 Volume 22 Issue 4 Pages 87-94
    Published: 1976
    Released on J-STAGE: October 24, 2006
    DOIhttps://doi.org/10.4188/jte1955.22.87
    JOURNAL FREE ACCESS
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    To investigate the transmission of loom vibrations to the ground as well as the characteristics of the influence of vibrations on houses near a weaving mill, measurements were made of the oscillating frequencies of the ground and of the neighbouring houses, when many looms were run simultaneously.
    The experimental results showed that: 1) The natural frequency of wooden houses is 2-3Hz in the horizontal vibration. So, if the ground is so soft as to resonate with such low frequency as loom's forced vibration having 2-3Hz, houses vibrate heavily, resulting in serious environmental problems. 2) The countermeasure of this problem is only to install looms on floating slabs. 3) If the ground is firm enough not to resonate easily with 2-3Hz, the vibration is limited in a small area. The use of vibration-free devices already developed is considered effective in this case to some extent.
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  • A Flammability Tester and Effects of Several Factors on Burning Rate of Cotton Fabrics
    Atsuo Konda, Toshimasa Misaizu, Sadamu Sekiguchi
    1976 Volume 22 Issue 4 Pages 95-102
    Published: 1976
    Released on J-STAGE: October 24, 2006
    DOIhttps://doi.org/10.4188/jte1955.22.95
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    An apparatus was composed in our laboratory, with which the time required for a flame to propagate a definite distance along a fabric can be automatically recorded. Using this apparatus, the burning rate of cotton fabrics was measured to get the following results:
    1. The burning rate of cotton fabrics increases with increasing specimen width and becomes nearly constant for wider specimens than 70mm. Therefore specimens of 70mm width are appropriate to test the burning rate of cotton fabrics.
    2. The burning rate v of cotton fabrics can be represented empirically by v=A*w-α and A*=A'(1+K'' sinθ), where w is the weight of a sample per unit area, θ the inclination angle of the sample, and α, A', and K'' constants.
    3. The burning rate of specimens placed above or below an aluminium plate or a cotton fabric was measured, and it was found that it is influenced by various factors such as: a. What material is the adjacent object made of? b. How far is the object apart from the fabric? c. Whether is the object present above or below the fabric?
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  • “F-INDEX TESTER, ” an Optical Hairiness Counter
    Shikibo Ltd.
    1976 Volume 22 Issue 4 Pages 103-104
    Published: 1976
    Released on J-STAGE: October 24, 2006
    DOIhttps://doi.org/10.4188/jte1955.22.103
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  • FRAY COUNTER (Model DT-104)
    Instrument and System Products Department
    1976 Volume 22 Issue 4 Pages 105-107
    Published: 1976
    Released on J-STAGE: October 24, 2006
    DOIhttps://doi.org/10.4188/jte1955.22.105
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  • A New Hairiness Tester, Cross Section Projecting Type
    Takashi Hiramatsu, Tetsuji Shimizu, Kenichi Kinoshita
    1976 Volume 22 Issue 4 Pages 108-109
    Published: 1976
    Released on J-STAGE: October 24, 2006
    DOIhttps://doi.org/10.4188/jte1955.22.108
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