Abstract: A method for producing a filament yarn with alternating S- and Z-twists. The yarn is moved between two twisting stops and submitted alternatively to S- and Z-twisting by at least one false twisting unit. The twists are fixed in a fixing unit situated downstream from the false twisting unit. The twisting stop downstream of the fixing unit is moved synchronously with the yarn and held in a yarn engagement position to stop the twisting until at least the twisting inversion points is fixed in the yarn. At least one other twisting stop oriented at a distance from the above mentioned moving twisting stop is engaged with the yarn in a way to stop the twisting and is moved along with the yarn before said yarn is submitted to an opposite twisting by the false twisting unit.

Abstract: The electromagnetic hysteresis brake, especially a yarn brake for textile machines, comprises a stationary brake magnet (1), which consists of inner and outer pole ring parts (2, 3) and a magnet winding (4), and a rotating armature (8), which is connected to a hysteresis ring (7) of permanent magnetic material. The hysteresis ring (7) projects into an annular air-gap (6) of the brake magnet (1), which is formed between the inner and outer pole ring parts (2, 3). At least one permanent magnet (5) is so arranged adjacent the magnet winding (4) that the magnetic field in the air-gap (6) is formed by cooperation of the magnetic fluxes of the electromagnet (4) and the permanent magnet (5). The magnetic flux of the electromagnet (4) can be adjusted in magnitude and direction in the gap by corresponding poling that it assists or counteracts the magnetic flux of the permanent magnet.

Abstract: A machine vise has lateral cuttings outlets (10). Two wipers are provided on the slide (6). The first wiper (7) cooperates with the surface of a cylindrical region (2) of the spindle (1). The second wiper (8) clears the cuttings from the thread (4) of the spindle (1).

Abstract: A multiple vise includes fixed jaws (7, 8) at the opposite ends of a vise body (1) and movable jaws (5, 6) located between the fixed jaws and cooperating therewith to provide two vises. The two movable jaws (5, 6) and thus the two vises are operated simultaneously by a two-part spindle (11, 12) with opposite screw threads (15, 16). A power amplifier (28, 29, 34) is provided between the spindle parts (11, 12) and, in the clamping position, urges the spindle parts away from each other.

Abstract: A clamping element (4) for the clamping of workpieces on a clamping surface (1b) with receiving recesses distributed over its surface in accordance with a predetermined division (Ra) has on its clamping body at least two attachment openings (9) spaced from each other by the division spacing (a) and at least two clamping holes (10) which are in each case distributed along at least one circle around a longitudinal axis (8) of the clamping element (4) in order to achieve high reproducibility with a great variety of possible uses.

Abstract: A wedge-type mechanical servomotor has a primary member (1) with wedge faces (10) on which roll bodies (7) may move. The roll bodies (7) also engage faces (8) on abutment (9). Further roll bodies (17) engage cooperating wedge faces (16) on abutment (9) and (18) on secondary output member (19), and other roll bodies (5) engage cooperating faces (13) on abutment (9) and (14) on bushing (26), so that the device achieves essentially pure rolling movement of the roll bodies (5,7,17) which move between all faces on abutment (9) and faces (10, 14, 18) opposite to these faces (8, 13, 16) and supporting the roll bodies (5, 7, 17).

Abstract: The upward twisting machine, in particular double twisting machine, comprises for each twisting point a creel (3) and an associated take-up cylinder (6) as well as a carrying arm which is pivotable about a pivot axis arranged on the vertical longitudinal centre plane (M) and extending parallel thereto, which carries the creel (3). The pivot axis (5) of the carrying arm (4) is provided in the region below the conveyor belt (2). The pivot radius (R) of the bobbin axis (S) of a take-up bobbin (7) held in the creel (3) is dimensioned relative to the pivot axis (5) in such a way that the line of contact (B) between the bobbin winding and the take-up cylinder (6) is always located on the side facing towards the vertical longitudinal center plane (M), of a vertical plane (V) passing through the axis (A) of the take-up cylinder (6). Furthermore, a cover plate (9) sloping downwards the conveyor belt (2) is provided between the take-up cylinder (6) and the conveyor belt (2 ).

Abstract: A drive for a machine vice having a vice body (8), a fixed jaw (9) and a movable jaw (4), a drive spindle (1) rotatably mounted in a thrust block (6) at one end of the vice body adjacent the movable jaw, a slide or drive nut (29) for the movable jaw cooperatively engaging drive screw threads (30) on the spindle so that rotation of the latter actuates the movable jaw, these parts extending on one side of the thrust block (6), a threaded sleeve (11) mounted in the thrust block, an extension (13) on the drive spindle extending rotatably and slidably through the thrust collar, a chamber drive unit (15) threadedly engaged (14) with extension (13) at one end and threadedly engaged at the other end with crankshaft (16) driven at its outer end by a crank (3) so that the crank rotates the drive spindle.

Abstract: A cabling machine comprises several cabling stations (2) each of which comprises a spindle (3), a thread combining means (7) which is disposed thereabove on a horizontal support arm (8), a delivery device (20) disposed thereabove, and above the delivery device a take-up device (22, 23). The support arm (8) can be pivoted about a vertical pivot axis (S). On the support arm (8) in extension of the spindle axis (A) are disposed a first guide roller (13), offset in a direction towards the longitudinal center plane (M) of the machine a second guide roller (14), between these two the thread monitor (15) and a thread cutter (16), and a third guide roller (18). The delivery device (20) is offset from the spindle axis (A) towards the longitudinal center plane (M) of the machine.

Abstract: A yarn monitoring device comprises in association with each doubling spindle (1) a sensing arm (7) monitoring the upwardly directed yarn run between yarn guide eye (3) and feed roller (V), which arm is mounted by means of a mounting bush (9) for limited swinging on a rocker shaft (6). The mounting bush (9) comprises a slot (12) extending in its circumferential direction, in which engages a stop pin (11) extending radial to the rocker shaft (6) and fixed relative thereto. In the slot (12) is a lining in the form of a substantially U-shaped clip (13) of spring steel, whose semi-circular connecting part (13b) lies at the end surface (12b) of the slot (12) directed away from the spindle and whose U-arms (13a) extend parallel to the side walls (12a) of the slot (12), abut thereagainst and are inwardly bent at their free ends (13c) so that they grip on to the stop pin (11) in the swung up position of the sensing arm (7).

Abstract: The invention relates to a machine tool vice having a vice body and a slide guided in the vice body, with a clamping mechanism working between the vice body and the slide, in which there are two jaws, which are connected with the vice body and the slide respectively and of which the fixed jaw is designed in a bridge-like design and secured such that it can be detached. The clamping mechanism is arranged beneath the clamping zone formed by the jaws, and the slide is arranged in a longitudinal recess, open at the top, and extending generally over the entire length of the vice body. The vice body or the slide is provided with several means of retention which can be used selectively for the jaws. Alternatively several interchangeable jaws be used selectively, and all jaws are mounted on the vice body and the slide such that they can be detached.

Abstract: A high pressure clamping device having a screw vice body, a fixed jaw arranged on one of the ends of the screw vice body, and a slide, which is retained in a guide on the screw vice body and carries a jaw movable relative to the fixed jaw. A reaction block is provided on the other end of the screw vice body to co-operate with a tensioning drive of the movable jaw, which drive consists of a force intensifier or slave unit and a threaded spindle, which can be driven by means of a common crank. The threaded spindle engages in a spindle nut of the slide. The movable jaw is positioned above the force intensifier in the retracted position of the slide and is arranged in the screw vice body between the reaction block and the threaded spindle. The spindle nut which is formed in an extension of the slide, exerts a forward twisting and downwardly directed tensioned pull on the movable jaw in its clamping position.

Abstract: A bobbin holder (1) having a pivotally mounted bobbin frame (2) is provided at its two support arms (3a, 3b) with a respective freely rotatably mounted tube plate member, of which one plate member (7) has a centering projection (10) for receiving the bobbin tube (5), has axially therebeside at least one thread catch means (12) and has a mounting projection (11) which concentrically surrounds a mounting pin portion (18) and which projects towards the support arm (3a). Over a part of its axial length, the mounting projection (11) is concentrically surrounded by a sleeve-like portion (15) provided on the support arm. In its region which is not surrounded by the sleeve-like portion (15), the mounting projection (11) is provided with a peripheral groove (16) for winding up an overhanging free thread end portion (FE) which is not engaged by the catch means (12, 13, 14).

Abstract: A swingable spool holder for a spool which can be driven on its periphery is controlled by a pneumatic drive device which can swing the spool holder between an operating position and a rest position. A compressed-air line is connected to the pneumatic drive device, and to a control valve which can be moved into two switching positions by a feeler lever which engages the thread which is to be wound up. A throttle valve which is effective in one direction is provided in the compressed-air line, which throttle valve is influenced by pressure in the compressed-air line so that it throttles the compressed-air supply to the pneumatic drive in one switching position of the control valve and, in another switching position, permits the rapid escape of compressed-air from the pneumatic drive device into the compressed-air line.

Abstract: In an apparatus for manufacturing a fancy yarn, a rotary hollow spindle (2) carries a binding thread spool (3) and, at its discharge end, a false twist element (4). Associated with the hollow spindle (2) at the entry end are feed means having a pair (13) of delivery rolls for at least one core thread (G) and at least one fancy thread (E) which is supplied at higher speed than the core thread (G). In addition, arranged downstream of the false twist element (4) is a pair (5) of take-up rolls for taking up the finished fancy yarn at a lower speed than the supply speed of the fancy thread (E). A central drive motor (M2) drives the pair of take-up rolls (5) by way of belt drives (7, 10, 12) and the pair (13) of delivery rolls by way of a stepless control transmission (11). The feed means comprise a drawing system (S) for the fancy thread (E) comprising a pair (16) of entry rolls, a pair (17) of middle rolls and a pair (19) of exit rolls, and a separate pair (13) of delivery rolls for the core thread.

Abstract: A pneumatically driven clamping device, in particular a machine vice, has a clamping member movable in the clamping direction in a stationary housing and an adjusting arrangement for coarse adjustment of the clamping member in the clamping direction with respect to the stationary housing. Between the adjusting arrangement and the clamping member in a drive housing there is provided a power amplifier with a primary element to which pneumatic pressure can be admitted, an abutment provided at one end of the power amplifier and connected to the adjusting arrangement, and a secondary element movable in the clamping direction at the other end of the power amplifier and acting on the clamping member.

Abstract: A twisting machine for twisting several filament yarn strands which are preferably an aramid (aromatic polyamide) and wound on spools, has a creel for supporting the spools, a delivery system which includes several feed rollers, and a first thread guide which is supported before the delivery system along the strand paths for movement back and forth in directions parallel to the axes of the delivery rollers. The first thread guide is a cylindrical first guide roller which has a circumferential guide groove for each yarn strand and is rotatable about an axis which extends parallel to the feed roller axes. A second cylindrical guide roller is arranged following the delivery system along the strand paths, is freely supported for rotation about an axial movement along an axis which is parallel to the feed roller axes, and has a circumferential guide groove for each yarn strand.

Abstract: A double twisting spindle is equipped with a pneumatically operated threading device. An injector nozzle is provided in the spindle rotor, an air stream through which nozzle sucks a thread into a hollow spindle axle and moves the thread through a thread channel in the storage plate. A compressed-air supply device is arranged below the spindle rotor for supplying compressed air to a central connecting channel provided in the spindle rotor and in communication with the injector nozzle. A common operating lever is provided which first operates a spindle brake and then opens a valve of the compressed-air supply device. The connecting channel has at its open lower end a funnel-shaped enlargement.

Abstract: A device for feeding a liquid thread-treating medium to the thread in a double thread twisting machine has a wiping head of a wear-resistant material arranged in a housing and extending from below into an annular recess of the overflow plate and into the thread running plane. The wiping head has an opening in the top thereof which extends substantially parallel to the spindle axis and has an insert in the opening which induces a capillary action that transports the thread-treating medium from a supply pipeline to the upper port of the opening. The insert is a pin made of a rigid material and of noncylindrical cross section so that between the outer surface of the pin and the inner surface of the opening small gaps are formed which produce the capillary action.

Abstract: In an apparatus for producing effect yarn, at least one pair of feed rollers is provided for supplying a yarn component creating the effect, this pair of rollers consisting of a driven feed roller and a pressure roller forced against it. Moreover, the apparatus has at least one supply arrangement for a foundation thread, a hollow spindle carrying a bobbin of binding thread and having a twist limiter, and a pair of draw-off rolls. A deflecting pin extending substantially parallel to the axes of the rollers is provided at the exit of the pair of feed rollers in the wedge formed between the two rollers. This deflecting pin serves to guide the foundation thread which is led past the pair of feed rollers on the outside. This deflecting pin is arranged substantially in the plane of thread movement passing through the line of contact of the two rollers and through the yarn components combined and false-twisted downstream of the line of contact.