| 摘要 |
A double twisting frame for a flange bobbin, in which a yarn unwound from a yarn supply bobbin is guided to a central hole of the bobbin, passed through a tension device and a yarn guide hole wound on the periphery of a rotary board, then travelled upward, and then twisted while being ballooned. A flyer is rotatably mounted on the upper side of the yarn supply bobbin and the flyer has a yarn guide portion located outwardly of the peripheral surface of the upper flange of a flange bobbin.
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