Abstract: A substrate of a paper machine clothing has a usable region formed with through-channels that are non-cylindrical with a cross-sectional area becoming smaller from an upper side to a middle region of the substrate. An upper rim of at least one of the through-channels directly contacts an upper rim of at least one neighboring through-channel and the upper rims have common local maximum. A sectional plane parallel to the thickness direction of the substrate defines an intersecting line with a sidewall of a neighboring through-channel. The intersecting line has a convexly shaped first portion, a concavely shaped second portion, and a third portion that is again convexly shaped going from the at least one common local maximum toward the middle region of the substrate. There is also described a method of producing such a paper machine clothing.

Abstract: A hydrodynamic retarder having a rotor and a stator or a rotor and an oppositely running rotor, which together form a toroidal working chamber to filled with working medium, in order to transmit a torque by means of a hydrodynamic working chamber working medium circuit. An external working medium circuit has a heat exchanger that discharges heat from the working medium. The external working medium circuit is connected by a working medium inlet and a working medium outlet to the working chamber. The working medium inlet and outlet open to the working chamber at a torus outer diameter of the working chamber. A working medium feed line opens into the external working medium circuit. A core ring filling line is connected in working-medium-conducting fashion to the working chamber. The core ring filling line opens into a core ring of the working chamber radially within the torus outer diameter.

Abstract: The invention relates to a roller for producing a fibrous web, in particular a paper web including a rotationally symmetrical base body which is rotatable about a longitudinal axis and has a shell surface on which there are arranged at least two elastically deformable and/or deflectable ring-shaped lamellas which extend away from the shell surface in the radial direction and which surround the base body in the circumferential direction, wherein the lamellas are arranged at least in sections at an angle relative to a center plane of the roller aligned perpendicular to the longitudinal axis of the roller, thus forming an angle of inclination.

Abstract: A method for producing a web of fibrous material includes the steps of: bringing the web into contact with a heated cylinder, the web being able to be elongated in a transverse direction; guiding the web, together with an elastic belt, over the heated cylinder, the web being between the elastic belt and a cylinder surface; pressing the web against the heated cylinder by the elastic belt; subjecting the elastic belt to a pre-tensioning—which is at least one of variably adjustable and controllable—in the transverse direction before being brought into contact with the web; and relieving the pre-tensioning of the elastic belt generated in the transverse direction again after formation of a steam cushion between the web and the heated cylinder, such that the web is shrunk with the elastic belt in the transverse direction in a sliding manner over the steam cushion on the heated cylinder.

Abstract: A machine for producing a fibrous web, such as a tissue web, has pressing device with a pressing element and a counter-element with a closed surface for forming a pressure nip. A water-absorbing belt with a web side and an opposite pressing element side is guided together with the fibrous web through the pressure nip and the fibrous web is separated at the end of the pressure nip from the web side of the water-absorbing belt and runs further with the counter-element. The water-absorbing belt has at least a first ply and a second ply, and, as viewed in the thickness direction of the water-absorbing belt, a layer in or on the belt half which faces the pressing element, which layer has a higher specific throughflow resistance than the first ply and/or the second ply.

Abstract: A paper machine clothing has a substrate with an upper side, a lower side, two lateral edges and a usable region between the two lateral edges. The usable region is formed with a plurality of through-channels extending through the substrate and connecting the upper side with the lower side. The through-channels are non-cylindrical with a cross sectional area becoming smaller when going in a thickness direction of the substrate from the upper side to a middle region of the substrate between the upper side and the lower side, wherein a shape of the cross sectional area of at least one through-channel, preferably of all through-channels, of the plurality of through-channels changes proceeding in the thickness direction of the substrate from the upper side to the lower side.

Abstract: An electric machine contains a rotor winding head and a device for monitoring same. The device contains a microwave radar system which has a transceiver unit, a sensor, and a cable. The sensor is lance-shaped, and the longitudinal axis of the sensor is arranged in the radial direction. The sensor extends between the stator winding elements, and the sensor contains a lance-shaped support, an antenna, and electric conductors. The support is made of non-magnetic and non-conductive materials, and the antenna is arranged on the sensitive end of the sensor and is connected to the support. The electric conductors connect the antenna to the cable and are connected to the support, and the sensor contains a voltage insulation which surrounds the support, the antenna, and the conductors.

Abstract: A woven fabric for use in a machine to produce a fiber web, such as a tissue fiber web. A paper side of the fabric has warp yarns and weft yarns interwoven in a weave pattern, and twill lines, each formed by neighboring warp yarn flotations. Each warp yarn flotation of the weave pattern that contributes to the formation of the twill lines passes over a first weft yarn, which passes over a first warp yarn that directly neighbors the warp yarn flotation on a first side and passes below a second warp yarn that directly neighbors the warp yarn flotation on a second side opposite the first side. The warp yarn flotation also passes over a second weft yarn that directly neighbors the first weft yarn, and the second weft yarn passes below the first warp yarn and over the second warp yarn.

Abstract: A method for controlling a hydrodynamic machine, including the steps of: providing a hydrodynamic machine which includes a bladed primary wheel and a bladed secondary wheel, which together form a working chamber, which can be filled with a working medium from a working medium supply contained in a working medium reservoir, to transfer drive power hydrodynamically from the bladed primary wheel to the bladed secondary wheel by forming a working medium circuit in the working chamber; applying a control pressure to the working medium supply in order to force the working medium from the working medium supply into the working chamber; detecting, at least indirectly, a pressure increase in the working medium reservoir, when the control pressure is applied to the working medium supply; and determining, as a function of the pressure increase that has been detected, a fill level of the working medium supply in the working medium reservoir.

Abstract: A valve drive with a snap function includes a rotary drive input, a lead screw connected to or formed by the rotary drive input, a slide in threaded engagement with the lead screw to form a screw thread, the slide being mechanically connected or connectable to a valve body and being movable in the direction of a longitudinal axis. A bearing housing is provided in which the lead screw is mounted so as to be rotatable about the longitudinal axis and stationary in the direction of the longitudinal axis. The bearing housing is held against a displacement along the longitudinal axis by a releasable locking device, countering the preload force of a snap spring.

Abstract: An installation and a method for selectively producing a single-ply or alternatively a multi-ply nonwoven includes an inclined wire former configured to deposit a sheet of wet-laid fibre material on a first circulating belt, a further belt configured to receive the sheet of wet-laid fibre material from the first circulating belt, a roller card arranged downstream in the material transport direction and configured to introduce a roller card web into the installation, a hydroentanglement arranged downstream in the material transport direction and including at least one water beam configured to entangle, bond and/or structure a single sheet of fibres or a plurality of sheets of fibres, and a dryer arranged downstream in the material transport direction

Abstract: A universal joint contains a first joint yoke and a second joint yoke. The first joint yoke and the second joint yoke are connected by a journal cross, ends of the journal cross being mounted in the joint yokes by bearings. In order to lubricate at least one of the bearings, at least one lubricant feed-through is provided, which is provided outside of a central bore of the journal cross.

Abstract: A method of manufacturing a wet-laid nonwoven web includes the following steps: feeding a pulp suspension onto a forming screen for depositing a fibrous web thereon, wherein the pulp suspension has industrially produced, inorganic fibers or fibers of synthetically produced polymers and the pulp suspension is substantially free from binders, such as chemical binders, and hydraulic consolidation of the fibrous web to generate the nonwoven web through water jet needling of the fibrous web.

Abstract: A system for purifying a fibrous suspension consists of multiple hydro-cyclones arranged adjacent to one another in a row, each of the hydro-cyclones having at least one feed connection, one accepted stock connection and one reject material connection, and having at least one supply manifold which is connected to multiple feed connections and/or having at least one accepted stock manifold which is connected to multiple accepted stock connections and/or having at least one reject material manifold which is connected to multiple reject material connections, the manifold being elongated and the corresponding connections discharge at their longitudinal side into the corresponding manifold. At an end of at least one manifold which follows the final hydro-cyclone, a fluid or a suspension is guided via at least one flushing connection into or out of the manifold.

Abstract: The invention relates to an installation and a method for selectively producing a single- or multi-ply nonwoven includes an inclined wire former configured to deposit a sheet of wet-laid fibre material on a first circulating belt, a further belt configured to receive the sheet of wet-laid fibre material from the first circulating belt, a roller card arranged downstream in the material transport direction and configured to introduce a roller card web into the installation, a hydroentanglement arranged downstream in the material transport direction and including at least one water beam configured to entangle, bond and/or structure a single sheet of fibres or a plurality of sheets of fibres, and a dryer arranged downstream in the material transport direction.

Abstract: A wicket gate for a hydraulic turbine or pump contains a blade being defined by a pressure surface, an oppositely facing suction surface, a leading edge and a spaced apart trailing edge, a first trunnion, a second trunnion, an air inlet aperture, an air passage and at least one air outlet aperture. The profile of the suctions side surface of the blade along a cross section through a point P1 and a point P2 is concave. Whereas point P1 is located on the suction side surface of the trailing edge where an air outlet aperture is located and point P2 is spaced apart from point P1 by less than 10% of the wicket gate length D and point P2 is located upstream of point P1 on a line perpendicular to the trailing edge starting at point P1.

Abstract: A woven fabric is used in a machine to produce a fiber web. The woven fabric has a machine direction, a cross machine direction, a paper side and a machine side. The paper side is formed by interwoven warp yarns and weft yarns. The paper side contains a plurality of twill lines, each twill line being formed by a plurality of neighboring flotations of warp yarns. The twill lines contain an MD vector component directed in the machine direction and a CD vector component directed in the cross machine direction. At least some twill lines are diagonal twill lines meaning that the CD vector component is unequal to zero. The plurality of diagonal twill lines contains first diagonal twill lines and second diagonal twill lines, the CD vector components of the first diagonal twill lines have an opposite sign to the CD vector components of the second diagonal twill lines.

Abstract: A method for producing an edge protector on a clothing for a machine producing or finishing a fibrous, paper, cardboard or tissue web, includes providing a clothing formed substantially from a woven fabric with crossing weft and warp threads and opposite side edges, applying a film strip onto a surface of one side edge and, immediately before bringing the film strip into contact with the clothing, surfaces of the film strip and the clothing facing each other are heated to slightly melt the surfaces. A pressing force exerted on the film strip applied to the surface of one of the side edges, results in the film strip penetrating at least partially into the woven fabric. That side edge of the clothing with the film strip is cooled, resulting in a stable, particularly integrally joined and form-locking connection between the film strip and the side edge of the clothing.

Abstract: A clutch device with friction linings includes: a clutch housing, the friction linings including a first friction lining and a second friction lining, the first friction lining being arranged on the clutch housing, the clutch housing including a stop surface; a tapered ring, the second friction lining being arranged on the tapered ring, the plurality of friction linings being arranged relative to one another so that the plurality of friction linings can be brought into full contact with one another in a contact plane, the tapered ring including a reference surface; a spring element; a clutch actuating device, a wear gap being formed between the stop surface and the reference surface, the wear gap configured for becoming wider as the friction linings wear; and a locking element configured for being moved into the wear gap when the wear gap exceeds a definable maximum width.

Abstract: A roll covering includes a functional layer formed of a polymer which is a blend of at least one rubber and one millable polyurethane rubber. The polymer includes from 65% by weight to 85% by weight of the at least one rubber and from 15% by weight to 35% by weight of the millable polyurethane rubber. A roll having the roll core, a method of using the roll and a combination of the roll and a heated drying cylinder are also provided.