| 摘要 |
A yarn threading apparatus is disclosed which is adapted for threading a yarn onto a yarn treatment device, such as the heating and cooling plates of a yarn false twist crimping machine. The threading apparatus comprises an elongate tube having a continuous longitudinal slot extending through the wall thereof, and a plurality of air injection nozzles positioned at longitudinally spaced locations along the length of the tube for forming a helical airstream through the interior of the tube. The yarn may thus be inserted into one end of the tube and entrained in the helical airstream so as to be advanced thereby through the tube and outwardly from the opposite end thereof, and with the helical configuration of the advancing yarn preventing it from withdrawing through the slot. The yarn may thereafter be withdrawn from the tube through the slot and onto the yarn treatment device, by imparting an axial force to the yarn.
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