| 摘要 |
An improved method for pneumatic threading in a two-for-one twisting spindle comprising a double hollow mandrel (14,40), said method comprising seizing the initial portion (1) of wound yarn from a bobbin positioned on the lower hollow mandrel (40) in the spindle basket and feeding a sufficient length of it through the upper hollow mandrel (14) to enable it to be then placed alongside the initial wound yarn portion (3) unwound from the bobbin (2) mounted on the upper hollow mandrel (14), the two said initial yarn portions (1,3) then being held jointly and rested on the mouth of the upper hollow mandrel, on which a head (25) connected to a compressed air source is placed and pressed, in order to achieve pneumatic yarn threading. <IMAGE>
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