Transfer tail apparatus for use with textile yarn winders

In a transfer tail apparatus of the type disclosed in the Newman et al. U.S. Pat. application Ser. No. 524,902, filed Nov. 18, 1974, now U.S. Pat. No. 3,971,518 and having first and second yarn guides each movable in a path from an unlatched position to a latched position and upon release and in ret...

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Hauptverfasser: SPALLER, JR., ALBERT E
Format: Patent
Sprache:eng
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Zusammenfassung:In a transfer tail apparatus of the type disclosed in the Newman et al. U.S. Pat. application Ser. No. 524,902, filed Nov. 18, 1974, now U.S. Pat. No. 3,971,518 and having first and second yarn guides each movable in a path from an unlatched position to a latched position and upon release and in return to the unlatched position, the one yarn guide translates a yarn into engagement with the outer axial end of a rotating yarn package tube for subsequent snagging by a slit in the end of the tube and the other yarn guide guides the snagged yarn onto an end portion of the yarn tube to form a waste bunch to secure the snagged yarn to the yarn tube and then along the end portion to form a transfer tail and finally releases the yarn for subsequent pickup by a yarn traverse guide to form the yarn package; the improvement comprising a readily visible and accessible single cocking mechanism for moving both yarn guides essentially simultaneously to their respective latched positions and including a lost motion arrangement by which a time delay is provided between the return movement of the first yarn guide to the unlatched position and the return movement of the second yarn guide to the unlatched position, which lost motion arrangement also includes a latching arrangement for the second yarn guide, further includes a back travel arrangement for the yarn laying guide to provide tying wraps across the waste bunch and still further includes an arrangement to give an impetus to the second yarn guide to overcome its inertia when released from its latched position to bring it up to a desired speed in return to the unlatched position.