Hairiness suppressing device for automatic winder

A hairiness suppressing device provided in a running path for a yarn formed by twisting fibers, the device comprising:

• a body having a yarn passage through which said yarn passes and a nozzle means having holes from which a gas is jetted to cause a whirling current in the yarn passage, and a twisting stop means provided at at least either the inlet or outlet of said yarn passage, said twisting stop means providing means operative to hold said yarn to thereby substantially stop twisting movement applied to said yarn by said whirling current from propagating beyond at least either said inlet or said outlet.

An automatic winder for unwinding a spun yarn wound around a supplying bobbin to rewind it into a package, wherein the winder comprises:

• a body having a yarn passage provided in a path for the unwound yarn said yarn passage containing holes from which a gas is jetted to cause a whirling current in the yarn passage, and
• a twisting stop means provided at least either the inlet or the outlet of said yarn passage to hold said yarn at least either the inlet or the outlet of said yarn passage to substantially stop twisting applied to said yarn by said whirling current from propagating beyond at least either said yarn passage inlet or outlet so that said yarn is located at the center of the circular cross section of said yarn passage.

A yarn processing device comprising:

• a body forming a whirling air current generation member,
• a vertical hole in said body, and
• means for holding a spun yarn substantially at the center of the vertical hole including a fixed guide member having an edge disposed in substantial alignment with said center of said vertical hole, a movable guide member having an edge operative to engage said yarn and for moving it into engagement with said edge of said fixed guide member, and means for moving said movable guide member.