Abstract: This comprises a single V-shaped tube (1) bent in a plane and having an inlet section (11), an outlet section (12), an inlet bend (13), an outlet bend; (14, a vertex bend, (15) and a respective tube section (16, 17) between the inlet bent and the outlet bent. Therefore, the distance between the vertex of the vertex bend and the inlet/outlet axis can be practically arbitrarily great; nevertheless, a high measurement accuracy, e.g., an accuracy of the order of ±0.5%, is attainable. Two clamping bodies (2, 3) are clamped onto the tube sections for defining a measuring length forming a tube section of the measuring tube. A respective flat body (31, 32) is fixed onto the clamping bodies (2, 3a).

Abstract: Surprisingly, silver-copper-palladium brazing alloys, which have hitherto been used only for the brazing of components of the same material, are also very well suited for brazing directly titanium to stainless steel if, the latter component clasps the titanium component tightly, so that the cold joint is under constant compressive stress. In a method for forming the titanium-steel compound the titanium component is provided with a cylindrical end which has a smaller out-side diameter than an adjacent main portion whose external surface is a first surface to be brazed. The cylindrical steel component is a sleeve whose inside diameter is equal to the outside diameter of the main portion and whose internal surface is a second surface to be brazed. A silver-copper-palladium brazing alloy is placed around the end of the titanium component. The steel sleeve is slipped thereover.

Abstract: This method of fastening a metal body to a an outer circumference of a single straight measuring tube, consisting of titanium or zirconium, of a Coriolis-type mass flow sensor does not need any heating, for example soldering, welding or brazing, process. The metal body has a circumferential surface and a bore adapted to the outer circumference. The metal body cooperates with an exciter arrangement or with a sensor arrangement or serves as a cantilever mass or as an end piece of the measuring tube. The metal body is pushed on to the measuring tube and is subsequently pressed on to the latter at ambient temperature. A pressure sufficient for fastening but not reducing substantially the lumen of the measuring tube at the fastening position is exerted on at least part of the circumferential surface.

Abstract: A process for pickling a strip which is produced in a thin slab installation and subsequently hot-rolled, especially a low-carbon steel strip, in a continuous process immediately following the rolling process. The process includes the following sequence of steps: gently cooling the strip exiting the rolling mill at .gtoreq.880.degree. C. in a first cooling zone to 850.degree. to 680.degree. C., balancing surface temperature and core temperature of the strip in a first recovery zone to a uniform cross section temperature of approximately 680.degree. C., gently cooling the strip in an immediately adjoining second cooling zone from 680.degree. to 480.degree. C., and balancing surface temperature and core temperature in a second recovery zone to a uniform cross section temperature of approximately 480.degree. C. The process continues by drastically cooling the strip from 480.degree. C. to approximately 95.degree. C.

Abstract: This method of fixing the ends of measuring tubes in associated transition pieces of a Coriolis-type mass flow sensor eliminates the risk of stress-corrosion cracking in these areas as completely as possible. The ends of the measuring tubes are inserted into associated bores of the respective transition pieces and are press-bonded to the walls of the respective bores without heat supply using a rolling tool which is inserted into the respective ends.

Abstract: This mass flow sensor, which can be installed in a fluid-carrying conduit of a given diameter so as to be axially aligned with the conduit, and whose production costs are drastically reduced, has an inlet tube and an outlet tube which serve to connect the mass flow sensor with the conduit, an inlet manifold and an outlet manifold, an external support tube whose end portions are fixed with their inside surfaces to the inlet manifold and outlet manifold, respectively, and with their faces to the inlet tube and outlet tube, respectively, two parallel, straight measuring tubes of the same inside diameter and the same wall thickness each having its two end portions fixed in parallel bores of the inlet manifold in alignment with the inlet tube and in parallel bores of the outlet manifold in alignment with the outlet tube, respectively, two node plates interconnecting the two measuring tubes near the inlet manifold and the outlet manifold, respectively, two vibration exciters, one per measuring tube, which excite th

Abstract: In a method and apparatus for manufacturing a yarn from fiber material at least two spinning devices arranged adjacent to one another are provided. Fiber material is dissolved and fed to the at least two spinning devices. Each spinning device generates an individual spun fiber. The individual spun fibers are combined at the inlet opening of a hollow spindle axis to form a yarn. The yarn undergoes a two-for-one twisting operation by being passed in a first yarn feeding direction through the hollow spindle axis to an outlet opening of the hollow spindle axis, then radially guided from the outlet opening, and guided in a second yarn feeding direction counter to the first yarn feeding direction to form a yarn balloon rotating in a direction of rotation about the at least two spinning devices. A centering element is arranged on an axis extending along the hollow spindle axle so as to be spaced from the inlet opening of the hollow spindle axle.

Abstract: A spindle for manufacturing yarns has a spindle rotor with a central axis. A fiber guide duct extends substantially from the central axis radially outwardly for guiding a first fiber radially outwardly. The first fiber, after exiting the fiber guide duct, is guided under formation of a fiber balloon to a centering point that is located on an extension of the central axis of the spindle rotor. At least one inlet line that extends substantially radially toward the fiber balloon is provided for introducing a flowable medium into a space limited by the fiber balloon.

Abstract: A textile yarn processing machine has a plurality of spindle assemblies for processing of yarn. Each spindle assembly includes mechanisms for forming a balloon of yarn which rotates around a spindle assembly central axis as the yarn travels through the spindle assembly during processing and a balloon limiter device surrounding the rotating balloon of yarn and having a generally cylindrical inside surface for frictional contact with the rotating balloon of yarn to restrict the size thereof. Devices are provided which reduce frictional contact between the rotating balloon of yarn and the inside surface of the balloon limiter so as to avoid the necessity of the use of lubricators on the yarn.

Abstract: A textile yarn processing machine has a plurality of spindle assemblies for processing of yarn. Each spindle assembly includes mechanisms for forming a balloon of yarn which rotates around a spindle assembly central axis as the yarn travels through the spindle assembly during processing and a balloon limiter device surrounding the rotating balloon of yarn and having a generally cylindrical inside surface for frictional contact with the rotating balloon of yarn to restrict the size thereof. Devices are provided which reduce frictional contact between the rotating balloon of yarn and the inside surface of the balloon limiter so as to avoid the necessity of the use of lubricators on the yarn.

Abstract: A spindle rotor is adapted (1) for use in a spindle of a textile thread processing machine, such as a two-for-one twister, in which the running thread being processed passes through an axially and radially extending thread passageway in the spindle and formed a rotating balloon around the spindle and includes means for supplying a flow of thread conditioning medium, fibrous material or other medium adapted to flow in a generally axial direction through the spindle and (2) to receive, guide and enhance the flow while performing the thread processing functions. The spindle rotor includes a hub member for rotatably mounting the spindle rotor in the machine spindle, a plurality of spaced-apart guide blades attached to the hub member and extending radially outwardly therefrom in a spoke-like manner for receiving the thread conditioning medium, and a radially extending thread passageway through the hub and one of the guide blades for receiving the running thread being processed.

Abstract: A pre-take-up roller mechanism is provided for varying the tractive force and tension on running thread being wound by a take-up mechanism in a thread processing machine. The mechanism includes a variably driven rotating drive shaft carried by the machine, a thread pre-take-up roller rotatably mounted on the drive shaft for receiving the running thread on the surface thereof and for being driven by the running thread through adhesion, and an eddy current clutch or a combination eddy current and hysteresis clutch operatively connecting the drive shaft and the pre-take-up roller for varying the torque on the pre-take-up roller and thus the tractive force and tension on the running thread by varying the driven rotational speed of the drive shaft without affecting the constant winding speed of the running thread being wound by the take-up mechanism.

Abstract: A yarn wetting device, particularly for a two-for-one twisting spindle assembly, has a reservoir and a porous member which has capillary action and over which yarn is drawn for the purpose of receiving wetting agent or the like which is fed from below by suction from the reservoir to the porous body. In order to ensure uniform transfer of the wetting agent, irrespective of the level of the wetting agent in the reservoir, a line system leads into the reservoir and has an opening which opens into the atmosphere above the reservoir and an opening located at a distance above the bottom of the reservoir, and the reservoir is sealed relative to the atmospheric pressure when the level of the wetting agent in the reservoir is above the bottom opening of the line system.

Abstract: In a splice between ends of multi-ply yarn, each ply end (G1a, G1b) of an end of the multi-ply yarn (Z1) is disposed adjacent to an associated ply end (G2b, G2a) of the end of the other multi-ply yarn (Z2) so as to overlap it over a predetermined length (U1, U2), and each of these two ply ends (G1a, G2b, or G2a, G1b) has the respective other ply end (G1b or G2b) of the multi-ply yarn wrapped around it in the region of overlap (U1, U2), different regions of overlap (U1, U2) of a splice being disposed in the longitudinal direction of the multi-ply yarn without overlaps.

Abstract: In a pneumatically threadable yarn brake, in which a substantially capsular brake cartridge (7) abuts against an upper (8) and lower (9) brake surface ring in a brake housing, the lower brake surface ring (9) is connected to an annular diaphragm (16) which is downwardly adjustable or movable under the action of a vacuum, at the same time carrying along the lower brake surface ring (9).

Abstract: In a process and apparatus for bulking, more particularly high-bulking, of textile yarns having fibers of different shrinkage characteristics including the step of and apparatus for temporarily heating the yarn sufficiently to obtain differential shrinkage and thus bulking of the yarn; the improvement of the steps of and apparatus for soaking the yarn with water and/or other liquid having dielectric properties similar to water while fully and evenly saturating the yarn throughout with a predetermined amount of such liquid, and applying microwave energy to the saturated yarn for heating of the yarn. With this process and apparatus, heating is uniformly applied throughout the yarn and an energy savings can be realized over conventional yarn bulking processes. This process and apparatus may be utilized in conjunction with a two-for-one yarn twisting apparatus in which the process is carried out and the apparatus is disposed between the steps of and the apparatus for twisting and taking-up of the yarn.