Abstract: The nut (3) is rotatable on the external thread (4) on the conical pin (1). A shackle (6) is mounted on the said nut and is pivotable about an axis (7) transverse to and at a distance from the central axis. The shackle engages behind the swelling (5) on the conical sleeve (2) and can be tightened by turning the nut (3). The nut (3) is formed so as to be divisible and is held together by a clamping device (8).

Abstract: Method and apparatus for cooling of a thread between a heating device and false twist spindle of a texturing machine. A part of the cooling medium (30) is guided in the direction of the thread transport and another part is guided against the direction of the thread transport through parts of a duct (11). The duct (11) is provided with rectangular chambers (14), arranged mutually offset, causing repeated flow of the cooling medium (30) across the thread (1) under vigorous vortex formation.

Abstract: A friction false-twist device for texturing textile yarns of thermoplastic synthetic material comprises a main friction element mounted to rotate about a first fixed axis and formed as a sphere or ellipsoid with at least one circular groove centered on the axis, into which projects the rim of a friction disc rotatable about a second fixed axis parallel to the first. Yarn to be twisted is wrapped partially over the curved surface of the main friction element and past the edge of the friction disc to a yarn-guide unit adjustable over substantially half the curved surface of the main friction element at a constant distance from that surface. The yarn-guide unit includes a guiding disc which causes the yarn to deviate after leaving the main friction element. To avoid excessive yarn tension the guide unit is adjusted to provide a comparatively small wrap angle over the curved surface during threading, and is then adjusted to provide a larger wrap angle for effective twisting.