Journal of the Textile Machinery Society of Japan
Online ISSN : 1881-1159
Print ISSN : 0040-5043
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Volume 6, Issue 1
Displaying 1-11 of 11 articles from this issue
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  • The Textile Machinery Society of Japan: An Appraisal
    Kiyohisa Fujino
    1960 Volume 6 Issue 1 Pages 1-4
    Published: 1960
    Released on J-STAGE: July 08, 2008
    DOIhttps://doi.org/10.4188/jte1955.6.1
    JOURNAL FREE ACCESS
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    The Textile Machinery Society of Japan is essentially an academic organ dedicated to contribution toward the advancement of knowledge and technique in the textile and textile machinery industries.
    The membership of the Society comprises engineers and researchers of universities, research institutes, textile manufacturing companies, textile machinery manufacturing companies, or individuals of expert knowledge and experience connected with these organizations.
    The Society takes a modest pride in the contributions it has made to the textile and textile machinery industries.
    As part of its work, the Society has been publishing a monthly journal in Japanese, setting forth the results of researches, studies and experiments by its members.
    Public reaction to the vernacular edition prompted us to start an English edition containing information on the Society's activities and proceedings, articles and treatises considered of special international interest. The English edition, first published in March 1955, is issued semi-annually. The present publication dates are June and December. The English edition enjoys a wide foreign circulation and has many exchange partners abroad. -Ed.
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  • The Shape and Parallelization of Fibers in Slivers and Their Directional Properties
    Masaki Tabata, Kameo Hayakawa, Toru Takizawa
    1960 Volume 6 Issue 1 Pages 5-10
    Published: 1960
    Released on J-STAGE: July 08, 2008
    DOIhttps://doi.org/10.4188/jte1955.6.5
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    The authors have studied the shape and parallelization of fibers in slivers and rovings and drafting-induced changes in parallelization and shape. Short dyed yarns were used as tracers in the observation of the shape of fibers. The Orientation Index (O. I.) was measrued by modifying Lindsley's method, but the measuring was made in the directions of plus (O. I. (+)) and minus (O. I. (-)).
    Our inquiry has shown that the straight fibers in a sliver and the mean value of their O. I. increases by drafting, but there seems to be a sizable difference in quantity between fibres with leading hooks and fibers with trailing hooks. There is also a difference in value between O. I. (+) and O. I. (-). These differences. however, decrease gradually in the subsequent processes.
    The results of our experiments guggest that O. I. (+) and O. I. (-) had better be measured and discussed separately. We also find that the direction in which slivers are fed has a considerable bearing on the quality of finished yarn.
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  • Continuous Control of Sliver Thickness
    Fumio Murakami, Toshio Shoman, Susumu Kase
    1960 Volume 6 Issue 1 Pages 11-16
    Published: 1960
    Released on J-STAGE: July 08, 2008
    DOIhttps://doi.org/10.4188/jte1955.6.11
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    This is an attempt to approximate the characteristics of two major types of servo-draft systems the open-loop system and the closed-loop system-by comparatively simple mathematical models consisting of linear transfer functions. The effectiveness of servo-draft systems in terms of the frequency response of the mathematical models has been investigated with the following results:
    (1) Sinusoidal variations in input sliver thickness cannot be effectively attenuated by the servo-draft system if the frequency of such variations exceeds a certain limit. This limit frequency is fixed by the time constants of the system components.
    (2) The open-loop servo-draft system is much higher in limit frequency than the closed-loop system if their time constants are equal. In other words, the open-loop system can attenuate sliver irregularities of higher frequencies than the closed-loop system can.
    (3) In most servo-draft systems there are frequency ranges in which the normalized amplitude of input thickness variations is magnified, rather than attenuated.
    (4) The open-loop and closed-loop systems can be combined Into one servo-draft system to make use of the advantages of the two systems. The characteristics of such a combined system are easily predictable from the characteristics of the two constituent systems.
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  • Measuring and Correcting Sliver Irregularity by Frictor-Using Equipment
    Kazuo Mihira, Hiraku Takeda
    1960 Volume 6 Issue 1 Pages 17-30
    Published: 1960
    Released on J-STAGE: July 08, 2008
    DOIhttps://doi.org/10.4188/jte1955.6.17
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    This is an attempt to explain the relation between “frictor” designed by the authors and the properties of slivers. The frictor is a trumpet-type tube which controls bundles of fibers.
    (1) The static resistance force of frictors of various shapes against slivers was measured with a magnetic strain meter by passing slivers through the frictors without fiber slippage.
    (2) A tentative plan of frictor-using sliver irregularity testers of two types is described. These testers have been devised on trial to express in two ways resistance force of the frictors against sliver-drawing: (a) by converting the resistance force of a frictor into a displacement variation of a spring and (b) by converting the resistance force into a current variation of a magnetic strain meter.
    (3) An automatic frictor-using controller of sliver irregularity has been devised on trial and tried by the open-loop system on a card. The performance of this controller has been analysed theoretically and experimentally, and the variations in its controlling effect are discussed.
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  • Control of Short-Wave Length Irregularity of Slivers
    Shoichi Ishikawa, Jiro Shimizu
    1960 Volume 6 Issue 1 Pages 31-34
    Published: 1960
    Released on J-STAGE: July 08, 2008
    DOIhttps://doi.org/10.4188/jte1955.6.31
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    This article inquires theoretically into the transfer function of the servo draft system and into the influence of fiber length on draft control.
    Figure 1 illustrates the existing model roller system. Its differential equation is given by formula (1).
    The transfer function of the servo draft system is obtainable thus:
    ΔN1(s)=1/D(1-sT2/1-sT1)ΔN2(s)-N1/v1(1/1+sT1)ΔU1(s)
    This article discusses, with the use of Bode diagrams (Figs. 5, 6, 7, 8 and 9), the influence of fiber length on ΔN2(s) and ΔU1(s).
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  • Measurement of the Diameter of a Packaged Roving Being Wound on a Running Flyer Frame
    Toshio Isshi
    1960 Volume 6 Issue 1 Pages 35-39
    Published: 1960
    Released on J-STAGE: July 08, 2008
    DOIhttps://doi.org/10.4188/jte1955.6.35
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    The author describes two methods of measuring the diameter of a packaged roving while it is being wound on a bobbin on a running flyer frame.
    The first method -a trial method-consists of the following processes: Project a ray of light on a mirror pasted on a presser-weight of a flyer. The reflected light is cast on sensitive paper placed in a dark box during the rotations of the flyer in a dark chamber.
    The other method-a practical one consists of the following processes: A ray of light comes from a lamp situated above a flyer, which has a silicon photo-cell fixed to the leg and a shutter plate fixed directly over the cell-to the presser-weight. Variations in the photo-electric current during the rotations of the flyer are recorded by a micro-recorder.
    Measurements have proved that the practical method measures the exact diameter of a packaged roving being wound and examines the characteristics of the packaged roving.
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  • Friction between Self-Lubricating Rings and Travellers and Their Wear
    Keiji Kanai, Hiroyuki Kanai, Yasuhiro Kanbara
    1960 Volume 6 Issue 1 Pages 40-44
    Published: 1960
    Released on J-STAGE: July 08, 2008
    DOIhttps://doi.org/10.4188/jte1955.6.40
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    The purpose of this research is to discover experimentally the characteristics of the friction between self-lubricating rings and travellers and their consequent wear.
    With the aid of a Ring Traveller Friction Tester, the authors have investigated the degree of friction between rings and travellers and the amount of their wear. Lubricating oil of various viscosity degrees was used in the investigation. Findings:
    (1) The viscosity degree of lubricating oil has no bearing on the wear of rings, although their wear varies with the type of the ring.
    (2) The viscosity degree of lubricating oil and the type of the oiling mechanism used do have a bearing on the wear of travellers.
    (3) The viscosity degree of lubricating oil has no bearing on the coefficient of ring-traveller friction, although the coefficient of friction varies with the type of the ring.
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  • Problems in the Designing of ALD Ring Spinning Frame
    Toshio Kawabata, Kenzo Kamizeki
    1960 Volume 6 Issue 1 Pages 45-50
    Published: 1960
    Released on J-STAGE: July 08, 2008
    DOIhttps://doi.org/10.4188/jte1955.6.45
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    This article is a report of experiments looking to practical use of ALD Ring Spinning Frame which uses no aprons but slide piece assemblies. The experiments have been made with attention directed particularly to the following points:
    (1) The conditions necessary for continuous feeding of slivers by four slide pieces.
    (2) How ALD should be designed so that the cross section of the grooves through the slide pieces pass can be automatically adjusted to the thickness of slivers.
    (3) How ALD should be designed so that all its parts can run continuously without mishaps.
    (4) What increase (in percentage) in the thickness of slivers during spinning lifts up the two top slide pieces and expands the cross section of the grooves. A diagram has been drawn to show the amount of pressure on the top slide pieces when they are lifted by an increase in the thickness of slivers.
    (5) Progress of the wear of the slide pieces.
    (6) Spinning of mock-twist yarns, core yarns and combination spun stretch yarns.
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  • Vibrations and Horsepower Consumption of High-Speed Spinning Frames
    Minoru Nakamura
    1960 Volume 6 Issue 1 Pages 51-54
    Published: 1960
    Released on J-STAGE: July 08, 2008
    DOIhttps://doi.org/10.4188/jte1955.6.51
    JOURNAL FREE ACCESS
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  • Howa Type High Speed Ring Spinning Frame
    Hatsutaro Yagami
    1960 Volume 6 Issue 1 Pages 55-56
    Published: 1960
    Released on J-STAGE: July 08, 2008
    DOIhttps://doi.org/10.4188/jte1955.6.55
    JOURNAL FREE ACCESS
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  • Reedmeter: A Reed-Measuring Instrument
    Seijiro Wakabayashi
    1960 Volume 6 Issue 1 Pages 57-59
    Published: 1960
    Released on J-STAGE: July 08, 2008
    DOIhttps://doi.org/10.4188/jte1955.6.57
    JOURNAL FREE ACCESS
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