Abstract: An apparatus (100) for cooling long products is provided, the apparatus (100) having a coolant supply line (42) for supplying a coolant and a plurality of cooling devices (70), each connected to the coolant supply line (42) via an individually adjustable control valve (90), whose coolant delivery depends is each case on a degree of opening of the respective control valve (90), so that distribution of the coolant delivery along the travel direction can be flexibly adjusted by individually setting the degrees of opening of the control valves (90).

Abstract: The present invention relates to a rack change system for changing of roller racks of a rolling block with a rail system along which change carriages can be moved, wherein the rail system includes a first track and a second track, which extend in different directions and are connected to one another via a switch, wherein the first track runs parallel to the rolling line of the rolling block, wherein a roller rack can be moved from the rolling block to the change carriage or a roller rack can be moved from the change carriage to the rolling block when the change carriage is standing on the first track and/or on the switch.

Abstract: The present invention relates to a rack change system for changing of roller racks of a rolling block with a rail system along which change carriages can be moved, wherein the rail system includes a first track and a second track, which extend in different directions and are connected to one another via a switch, wherein the first track runs parallel to the rolling line of the rolling block, wherein a roller rack can be moved from the rolling block to the change carriage or a roller rack can be moved from the change carriage to the rolling block when the change carriage is standing on the first track and/or on the switch.

Abstract: A core chuck for a web-winding machine has a drive shaft extending along an axis and having an outer periphery of polygonal shape seen axially and a hub having a central hole with a polygonal shape substantially complementary to the shaft and fittable with limited clearance over the shaft. A plurality of outwardly directed faces on the hub engage respective jaws and are angled such that relative rotation between the hub and the jaws radially displaces the jaws. A retaining screw extending along an axis of rotation of the shaft through the hub has a threaded shank seatable in the shaft and a head engageable axially in one direction with the hub. A cover disk axially fixed on the hub is formed on the axis with a hole of smaller diameter than the head of the screw. The screw head is captured axially between the disk and the hub.

Abstract: An apparatus for slitting a web moving along a path in a transport direction has a support transversely shiftable relative to the web adjacent the path, a drive shaft extending transversely of the direction adjacent the path and substantially nonmovable transversely of the path, and a drive gear on the support rotationally coupled gear to the drive shaft and shiftable along the shaft. A mount shiftable toward and away from the shaft on the support carries at least one driven gear and a driven blade fixed to and rotatable with the driven gear. Another blade is juxtaposed with the driven blade and flanks the path therewith. An actuator can shift the mount between a cutting position with the blades closely juxtaposed and the driven gear meshing with the drive gear and a retracted position with the blades separated and the driven gear out of mesh with the drive gear.

Abstract: The invention relates to a chuck for a roller-type slitting and winding machine with a plurality of chuck jaws (10) mounted such that they can be radially shifted and supported on curved contact faces, a central support hub (7) being provided according to the invention that has a central hole (6) in the form of a polygonal hub and curved outer faces (11) on which the chuck jaws (10) are supported.

Abstract: The invention relates to a longitudinal cutting device for cutting out strips (15) in a moving web of material. Said device comprises at least one carriage (5) which is mounted in such a manner that it can be displaced on a guide element (7) which extends transversally in relation to the direction of movement of the web of material. Said device also comprises a support (3, 20) with a freely rotatably mounted upper blade (2). Said device further comprises a drive shaft (8, 29, 39, 46) which extends over the entire width of the machine and which enables the upper blade (2), especially a circular blade, to be driven by means of a gear mechanism. Said upper blade (2) can be operated in a displaceable manner until a toothed wheel (14) which is connected to the circular blade and to the toothed wheel (13, 21) which drives the circular blade (2), is decoupled.

Abstract: An apparatus for heating an advancing thermoplastic yarn led over heating ridges along a heated surface. An essential feature of the invention is that the heating ridges can be maintained at a temperature as high as that of the heating surface, in particular at a temperature sufficient for ensuring a self-cleaning effect, without damaging the yarn. If required, the heat flow on the yarn may also be regulated by adjusting the height of the heating ridges and/or by modifying the length of contact with the yarn.

Abstract: A heater (1) for an advancing thermoplastic yarn which is guided along a heated surface over ring segments (2). The flow of heat to the yarn is adjustable by changing the geometric parameters of the heat transfer.

Abstract: A high pressure sealing arrangement of the type in which a rotor sealing ring end face generates a gas pressure with a stator sealing ring end face at a functional gap between a cylindrical portion of the seal housing and the stator sealing ring bridged by an O-ring of reduced hardness. The gap width is less than 0.4 mm and preferably less than 0.3 mm. The sealing O-ring additionally serve as a compensation or centering ring and has a material hardness which is greater than the extrusion threshold of this material through the gap and is less than a hardness of 90 Shore A according to German Industrial Standard DIN 53505. Preferably the hardness of the O-ring is less than 80 Shore A under this Standard.

Abstract: A high pressure sealing arrangement of the type in which a rotor sealing ring end face defines a gas pressure with a stator sealing ring end face has a functional gap between a cylindrical portion of the seal housing and the stator sealing ring bridged by an O-ring of reduced hardness. The polar or geometric moment of inertia of the stator sealing ring is sufficiently large that the gap width of the functional annular gap between the shaft-side cylindrical part of the sealing ring in the operational state and under the operational differential pressure corresponds to the structurally predetermined gap width of the mounting ring gap between the cylindrical part of the sealing housing and the stator sealing ring in all operational states and is less than 0.4 mm and preferably less than 0.3 mm.

Abstract: A turbocompressor shaft seal, especially for a high-pressure turbocompressor, has each of its gas-side and atmosphere-side slide rings biased toward a rotor ring of the shaft and associated with blocking-liquid compartments which are interconnected by an annular passage around the rotor ring. The compartments are connected in a closed circulation path with a circulating pump and a cooler and leakage liquid is returned by a feed pump to the liquid circulation with the aid of a pressure transformer biased on one side by the gas pressure to be sealed and an adjustable spring force and, on the other side, by the pressure of the blocking liquid.

Abstract: A turbocompressor shaft seal, especially for a high-pressure turbocompressor, has each of its gas-side and atmosphere-side slide rings biased toward a rotor ring of the shaft and associated with blocking-liquid compartments which are interconnected by an annular passage aroung the rotor ring. The compartments are connected in a closed circulation path with a circulating pump and a cooler and leakage liquid is returned by a feed pump to the liquid circulation with the aid of a pressure transformer biased on one side by the gas pressure to be sealed and an adjustable spring force and, on the other side, by the pressure of the blocking liquid. The surface area ratio K between the area of the atmosphere-side slide ring biased by the blocking liquid pressure toward the rotor ring and the sealing area of the atmosphere-side slide ring is substantially 0.45 to 0.60, the thermal conductivity of the slide rings and rotor rings is greater than 250,000 N/mm.sup.

Abstract: A high pressure sealing arrangement of the type in which a rotor sealing ring end face defines a gas pressure with a stator sealing ring end face has a functional gap between a cylindrical portion of the seal housing and the stator sealing ring bridged by an O-ring of reduced hardness. The conditions are such that torsional deformation of the stator sealing ring is practically zero under all operating conditions so that the recesses, grooves or the like of the end faces or at least one of them need not be defined to provide a twist-restoring force by reason of the pressure in the sealing gap.