Abstract: The filling thread distributor mechanism employs a stationary part having arcuate channels through which filling threads are continuously delivered. In addition, the mechanism has a rotatable part mounted on the weaving rotor which is provided with a plurality of circumferentially disposed transfer channels for sequential alignment with each connecting channel of the stationary part. Each transfer channel also communicates with a picking tube through which filling thread can be picked into a picking channels on the weaving rotor. A cutting mechanism is disposed between a picking tube and a picking channel in order to sever the filling thread and form a new tip for subsequent delivery to the next picking tube of the rotating part.

Abstract: The laser welding device is used for welding or coating workpieces. The device includes a nozzle for feeding powder to the operating area of a workpiece for melting within a laser beam directed onto the workpiece. The axis of the laser beam and the axis for the direction of movement of the laser beam on the surface of the workpiece, as well as an axis mutually perpendicular to the two axes, define a coordinate system having an origin at the point of incidence (EL) of the laser beam on the surface of the workpiece. A controllable and adjustable device maintains the positions of the nozzle largely constant in the coordinate system even when the relative movement of the laser beam and the workpiece are complex. This enables weld joints and welded-arm layers of a complex form and a largely homogenous quality to be produced.

Abstract: A driving and supply unit is provided with an air channel for drawing in hot air and delivering the air via a fan to a spray cooler with spray nozzles for spraying droplets of water into the conveyed air for cooling the air. Cooling water is delivered via a high-pressure water pipe and is first fed via a control to an impulse turbine with a reduction gear for driving the fan. The water is collected downstream of the turbine and is fed via a water pipe to the spray nozzles of the cooler.

Abstract: An implant for ingrowth of osseous tissue is constructed of a hollow skeletal three-dimensional support member having a plurality of openings for the ingrowth of osseous tissue into an interior cavity. The surfaces of the beams defining the openings may also be roughened to promote the fusion of tissue.

Abstract: In a device for a drawing a weft yarn (2) into a loom a continuous guide duct combined from tubular members (54, 55) is interrupted at places so that various operating elements such as a yarn brake (62) or a yarn tensioner (72) can act on the weft yarn (2). The weft yarn (2) is in these cases deflected transversely to the direction of movement through the tubular members, and so the tubular members (54, 55) are formed near the deflection station with slots extending from one deflecting station (63) to the other (63'). The device enables the weft yarn to be drawn in automatically by means of compressed air.

Abstract: A substrate based on aluminum (Al) is given a surface coating of aluminum (Al) and silicon (Si) and of at least one element X from the group iron (Fe), nickel (Ni), cobalt (Co), manganese (Mn and chromium (Cr), the total proportion of elements X being 1 to 35 wt.%. Depending on the concentration (C) of elements X in wt.%, the minimum hardness over at least 50% of the coated surface, measured in HV 0.05, can be calculated from the formula;HV 0.05=134+2.6 . C+0.44. C.sup.2The surface coating with the required minimum hardness greatly improves the mechanical and/or chemical properties of the substrate.

Abstract: The wire mesh is welded to the metal substrate via step-like protuberances formed on the outer surface of the substrate. The wire mesh is permanently deformed in the regions over the protuberances to facilitate forming of spot welds while the remainder of the mesh outside the zones of the protuberances remains porous for the intake of bone cement or the ingrowth of bone tissue.

Abstract: A rapier loom has rapier heads which are moved by picking tapes into an open shed. Spacing elements are provided for the rapiers to ensure that when the shed is fully opened, a space is present between the tape and the bottom shed to reduce frictional contact between the warp yarns and the picking tape edges when the shed closes. The spacing elements can be in the form of slidable members which are disposed on the underside of the rapier head and/or in the form on spacing teeth which are secured to the sley and which can enter the shed between the warp yarns of a bottom shed.

Abstract: A shaft for a hip joint prosthesis is provided with a square cross-section in the distal region of the shaft. In addition, teeth are provided along each corner of the shaft to provide support on a cortical bone. At least some of other teeth are directed in the proximal direction to displace the osseous tissue rather thanto exert a cutting force on the osseous tissue. The angular stresses occurring when the shaft is inserted in a bone are reduced without the loss of the spaces between the sides of the shaft and bone for the growth of osseous tissue and a revascularization of the bone.

Abstract: A hip joint prosthesis in the form of a femur head prosthesis or acetabulum has a mesh secured over at least part of the implant surface to define a cavity between the mesh and the supporting member of the prosthesis. The mesh is made of elastically deformable material to permit inward deformation during implantation. In addition, bone cement can be injected into the cavities so that the mesh then follows the individual shape of the cavity in the bone to mesh into the internal structure of the bone with hardened bone cement.

Abstract: A giver for a gripper loom having horizontal weft feeding has a head open at the top. A wide slideway ensures gentle treatment of the warp yarns and the low center of gravity reduces the tendency of the head to disengage from the slideway when the weft yarn is being drawn into the shed. A yarn clamp which keeps the weft yarn horizontal has a fin-like member which deflects the weft yarn downwards before entry into the clamp.

Abstract: The invention relates to a packing (2) for a material and heat exchange column (1), in which a gas phase and a liquid phase are brought into contact with one another, said packing comprising a multiplicity of identical packing elements (4) which are substantially in the form of a circular hollow cylinder whose annularly extending wall (6) is outwardly concave and inwardly convex and forms two outer edges (11) extending therearound, said hollow cylinder having a high ratio of outside diameter (D) to height (H). In order to reduce the pressure drop and to increase capacity and effectiveness, provision is made for the packing (2) to consist of a multiplicity of superimposed layers (3) of packing elements (4) which lie flat, are distributed randomly in each layer (3), and internally have a free passage cross-section, and in which the ratio of outside diameter (D) to height (H) is from about 6:1 to about 10:1.

Abstract: The apparatus comprises a conduit connected to a containment vessel to supply air to a water bath contained in a basin. The conduit is connected to a plurality of air nozzles in the water bath, each of which forms a unit together with a perforate baffle plate disposed above the nozzle to intensively mix the emerging air with water. A set of static mixer elements enclosed by a jacket is disposed in the water bath above the baffle plate.

Abstract: The gas/liquid distributor for a counter-current column has tubes for the liquid with outlets extending almost to the column portion underneath. At least ten flues per square meter of area of the distributor base are provided for guiding and distributing the upward-flowing gas. The total flow cross-section of the flues is not more than 10% of the area of the base which fills the entire column cross-section. The flow cross-sections of the flues are constricted in addition to their relatively narrow inlet cross-sections.

Abstract: The hydraulic jackhammer is provided with a rotor turbine which is driven by a liquid stream in order to activate the tup for driving against a jumper rod. After passing by the turbine rotor, the liquid stream is mixed with air and passed through a nozzle into a guide channel under pressure in order to cool the casing. Some of the liquid-air mixture is passed through the hollow jumper rod for spraying onto a jumper bit and sprayed onto the rock being drilled.

Abstract: The fuel cell battery has cells connected in series and is comprised an axially symmetrical stack of gas and air feed members and electrochemically active plates arranged alternately. Each feed member has an air heat exchanger in which the supplied air is heated. Gas and air may be made to flow in parallel on both ides of the electrochemically active plates. For each feed member, only one sealing ring is required to separate the air and gas spaces. The fuel cell battery has the advantage that induced stresses due to thermal expansion are small.

Abstract: The pull-through appliance is made of a mesh structure formed of at least one continuous thread and a pullout thread disposed at one end of the mesh structure to prevent unraveling of the mesh structure. A hollow tube is used to facilitate drawing in of the synthetic strand and autologous strand of the prosthesis. After removal of the hollow member, the resulting package can be readily threaded through a bore in a bone. After implantation, the pull-out thread is removed and the mesh structure unraveled so as to remove the mesh structure from within the bone.

Abstract: A sley drive for a loom has a shaft which is eccentric to an axis of rotation in order to provide partial weight balancing for the pivoting movement of the sley. Sley levers are mounted on the sley shaft with each having a clip-shaped part for clamping about the shaft by a screw which passes through legs of the sley levers on the side of the reed relative to the axis of the rotation. Intermediate bearings may also be secured to the sley shaft in the same manner as the sley levers.

Abstract: The ligament anchor is used for fastening an artificial ligament in a bone. The ligament anchor is formed of a clamp sleeve which tapers on the outside and is deformable radially to a smaller inner diameter. The clamp sleeve has projecting saw tooth segments on the inside with steep flanks against the direction of loading for engaging in the inserted ligament. The clamp sleeve is supported by an anchoring sleeve which tapers internally and is inserted in the opening of the bone. For anchoring, the ligament is pulled outwards under pressure against the direction of loading and the clamp sleeve is pressed into the anchoring sleeve in the direction of loading until the saw tooth elements embrace and hold the ligament such that under the built-up pressure and the ligament tension in the direction of loading, self locking of the sleeves take place.

Abstract: In a loom having at least two weft accumulators (10, 11) disposed lengthwise adjacent the loom, and a bobbin holder (2) to receive weft bobbins (220, 221), one of the weft bobbins (220, 221) mounted on a table (21) is moved into the operative position to deliver weft yarn (31) to a weft accumulator (10). The bobbin holder is disposed compactly in a space which is bounded by the weft accumulators (10, 11) and transversely thereto by the loom (1) and which is longitudinally adjacent the same and laterally adjacent the accumulators (10, 11). At least two tables (21) with the weft bobbins (220, 221) are received one above another in the bobbin holder (2) and the weft yarn (31) are guided substantially transversely to the loom longitudinal axis from the bobbin holder (2) to the weft accumulators. This arrangement increases the number of weft bobbins which can be stored adjacent the loom (1) without any appreciable increase in the amount of space required as compared with a bobbin holder with only one table.