Abstract: The invention relates to a receiving element for receiving an interchangeable yarn drawing nozzle that can be magnetically locked. According to the invention, the receiving element is configured as an adapter (26), which can be screwed into a central threaded bore (37) of a thread channel plate (12) in an open-ended rotor spinning device (1), the latter being designed to receive a conventional yarn drawing nozzle that is equipped with an external thread. The adapter (26) comprises centring bores (27) for receiving ferromagnetic centring lugs (28) of a yarn drawing nozzle (13) in addition to a continuous bore (33), whose internal diameter (d) is adapter to the external diameter (D) of the shaft (39) of the yarn drawing nozzle (13). The adapter is also equipped with permanent magnetic pins (30), which correspond with the ferromagnetic centring lugs (28) of the yarn drawing nozzle (13).

Abstract: The invention relates to a receiving element for receiving an interchangeable yarn drawing nozzle that can be magnetically locked. According to the invention, the receiving element is configured as an adapter (26), which can be screwed into a central threaded bore (37) of a thread channel plate (12) in an open-ended rotor spinning device (1), the latter being designed to receive a conventional yarn drawing nozzle that is equipped with an external thread. The adapter (26) comprises centring bores (27) for receiving ferromagnetic centring lugs (28) of a yarn drawing nozzle (13) in addition to a continuous bore (33), whose internal diameter (d) is adapter to the external diameter (D) of the shaft (39) of the yarn drawing nozzle (13). The adapter is also equipped with permanent magnetic pins (30), which correspond with the ferromagnetic centring lugs (28) of the yarn drawing nozzle (13).

Abstract: A spinning device comprising a spinning box housing; a spinning rotor having a spinning cup on a rotor shaft; a cover element; a traveling belt acting tangentially on the rotor shaft; a rotor brake; a pivotable expander roller moveable within a maximum pivot angle via a pressure lever system connected to the brake gear of the rotor brake between an operative position when the spinning box is closed in an inoperative position wherein the expander roller is automatically lifted off the tangential belt and the rotor brake is applied to the rotor shaft when the spinning box is opened; a brake and locking lever having a locking recess in contact with an arresting roller arranged on the cover element; and an arrangement in the pressure lever system for absorbing shock-like forces acting on the expander roller and for preventing the forces from being transmitted to the brake and locking lever.

Abstract: An improved shoe, promoting a heel-to-toe motion of a foot, comprising an outsole and an upper part. The outsole has a contraction extending to a first area where a back of the foot is located. The upper part has a heel guide, including one of a heelplate and a flexible heel brace, which are arranged in a second area where the heel of the foot is located, such that an Achilles tendon of the foot is free.

Abstract: A spinning device comprising a spinning box housing; a spinning rotor having a spinning cup on a rotor shaft; a cover element; a traveling belt acting tangentially on the rotor shaft; a rotor brake; a pivotable expander roller moveable within a maximum pivot angle via a pressure lever system connected to the brake gear of the rotor brake between an operative position when the spinning box is closed in an inoperative position wherein the expander roller is automatically lifted off the tangential belt and the rotor brake is applied to the rotor shaft when the spinning box is opened; a brake and locking lever having a locking recess in contact with an arresting roller arranged on the cover element; and an arrangement in the pressure lever system for absorbing shock-like forces acting on the expander roller and for preventing the forces from being transmitted to the brake and locking lever.

Abstract: A conduit plate adapter (10) for an open-end spinning device (1) which device comprises a vacuum-loadable rotor housing (2) which can be sealed by a cover element (5) and which device comprises a spinning rotor (3) rotating at high speed in the rotor housing (2). The replaceable conduit plate adapter (10) is arranged in a receptacle (7) of the cover element (5) and comprises, as is customary, the mouth area (32) of a fiber guide conduit (12) as well as a yarn withdrawal nozzle (11). The fiber guide conduit section running inside the conduit plate adapter (10) has an entrance opening (28) with a non-circular cross section in the area of the conical contact surface (19) of the conduit plate adapter (10).

Abstract: An open-end spinning device (1) with a spinning rotor (17) which is mounted with its rotor shaft (8) in the V-slots of a support-disk bearing (5) and whose spinning cup (17) rotates at a high speed in a rotor housing (6) which is open to the front and can be loaded by suction. The rotor housing (6) can be closed by a pivotably mounted cover element (10) which comprises a sliver opening device and is arranged so that it can be disengaged if required. The cover element (10) can be attached to the spinning box (2) via a mounting device (20) comprising fork-shaped connecting brackets (22) and pivot bolts (30) rotatably seated in the housing wall (38) of the open-end spinning device (1). If required, the cover element (10) can be easily removed after securing means (32), which are easily accessible, have been loosened.

Abstract: A process for the preparation of N,N'-disubstituted 1,4-diaminoanthraquinones has been found which is characterized in that 1,4-dihydroxyanthraquinones are reacted with aliphatic or aromatic amines in the presence of a hydroxycarboxylic acid as a condensation auxiliary.