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    scott
    3.
    发明授权
    scott 失效

    公开(公告)号：US284906A

    公开(公告)日：1883-09-11

    申请号：US284906D

    CPC分类号： A43D21/125 ,  Y10S12/03

    Pneumatic thread tensioning device
    5.
    发明授权
    Pneumatic thread tensioning device 失效
    气动螺纹张紧装置

    公开(公告)号：US4637229A

    公开(公告)日：1987-01-20

    申请号：US700452

    申请日：1985-02-11

    申请人： James W. Taylor, Jr.

    发明人： James W. Taylor, Jr.

    IPC分类号： D04B15/44 ,  B65H51/16 ,  B65H59/10 ,  D03D47/34

    CPC分类号： B65H51/16 ,  B65H59/105 ,  B65H2701/31 ,  Y10S12/03

    摘要： A pneumatic tensioning device (10) maintains a desired tension in a thread (18) as it is fed from a spool to a knitting or fabric weaving machine. A first tubular member (40) has an inner passageway (42) extending the length of the tube (40) that permits thread advancement therethrough. A second tubular member (46) surrounds the first tubular member (40) so that the inner walls of the second member and the outer walls of the first member define an outer passageway (48). An airflow is directed through the outer passageway in a direction that is the same as the direction of thread advancement. An orifice (54) communicates the airflow from the outer passageway (48) into the inner passageway (42) in a manner so that the direction of the airflow is reversed. The airflow thus flows in a direction that is opposite to thread advancement, wherein such opposing airflow causes a certain amount of tension in the thread.

    摘要翻译： 气动张紧装置（10）在线（18）从线轴馈送到针织或织物编织机时保持期望的张力。 第一管状构件（40）具有延伸管（40）的长度的内部通道（42），其允许螺纹通过其进入。 第二管状构件（46）围绕第一管状构件（40），使得第二构件的内壁和第一构件的外壁限定外部通道（48）。 气流沿与螺纹前进方向相同的方向引导通过外部通道。 孔54将气流从外部通道（48）传送到内部通道（42）中，使气流的方向相反。 因此气流沿与螺纹前进相反的方向流动，其中这种相对的气流在螺纹中引起一定量的张力。