Abstract: An improved clamping chuck for bobbins on thread winding machines wherein a bobbin carrier is removably mounted and held on an expandable chucking spindle by means of a plurality of clamping elements distributed in an annular cylindrical inner space formed between the spindle and an outer cylindrical sleeve mantle, each clamping element moving radially outwardly and inwardly of the mantle surface through openings which define the clamping position.

Abstract: An apparatus for turbocharging an internal combustion engine, and which is characterized by the ability to avoid excessive heat transfer to the bearings and any other heat sensitive components. In the preferred embodiment, the lubricating oil for the bearings in the turbocharger housing is directed through a passageway in the bearing shaft and is discharged onto the end wall of the bearing housing in a circular pattern, to thereby cool the end wall and minimize heat transfer from the turbine to the bearings in the housing. Also, the end wall of the bearing housing is spaced from the adjacent rear wall of the turbine housing to define a cooling air gap therebetween, and apertures are provided in the housing for permitting air to flow through the cooling gap to cool the opposing surfaces of the two adjacent walls and thereby minimize heat transfer therebetween.

Abstract: An improved means for mounting the induction coil of an inductively heated, rotatable godet about the magnetic core thereof so as to prevent internal overheating and preferably also to avoid any movement or play between the core and the coil as caused by heat expansion and vibration during operation of the godet. The improvement comprises cooling means for cooling the laminated pack acting as the magnetic core and for thermally isolating the pack from the coil and outer godet shell or casing, said cooling means including at least one hose-like tube wound around the laminated pack with means to conduct a fluid coolant therethrough. An elastic intermediate member is preferably introduced at some point between the coil and magnetic core in order to compensate for any unequal thermal expansion of these elements in the axial and/or radial directions.

Abstract: Traversing device in a thread winding apparatus having a housing encircling a rotatably driven cam roller which operates a traversing thread guide means mounted to project outwardly through a traverse slot or opening in the housing, with means to generate and direct an air stream to flow outwardly from said traverse slot in order to prevent the thread being wound or broken filaments thereof from entering the housing and being wrapped around the cam roller or interfering with the traversing thread guide.

Abstract: An improved clamping chuck for use in a thread winding device wherein a bobbin carrier is removably mounted and held on an expandable chucking spindle by means of swingable, elongated clamping elements which are distributed about the outer circumferential mantle of the chucking spindle and move radially outwardly and inwardly of the mantle surface through openings defining each clamping position. The improvement comprises a combination of these special clamping elements with means to apply two torque-producing forces causing each clamping element to swing into its clamping position outwardly of the mantle, preferably under a spring tensioned force, and another force transmitting means to counteract the torque-producing forces to return the clamping elements into their retracted or release position below the mantle surface in order to change bobbin carriers.

Abstract: Devices and processes for feeding freshly spun and/or stretched filaments, which are delivered to the devices at more than 1000 meters/min., in helices to a receptacle, said devices embodying a rotating member with curvate passage extending from its upper inlet, which lies in the axis of rotation, to its outlet opening at a radial and axial spacing from the inlet, the axis of the outlet opening facing opposite to the direction of orbit thereof and the tangent of the passage's radially outer wall surface contiguous to said outlet opening forming an angle between 30.degree. and 80.degree. with reference to the radius, drawn through the outlet opening, of the circle of rotation of the outlet opening.

Abstract: A thrust bearing assembly for use in an exhaust gas turbocharger or the like, and which includes a holding plate fixed to the turbocharger housing, a shaft rotatably mounted in the housing and extending through an opening in the plate, and a pair of flat, annular rings mounted on the shaft and receiving the plate therebetween to define a pair of opposing bearing surfaces on each side of the plate. A lubrication system supplies pressurized lubricant to the opposing bearing surfaces, and at least one of each pair of opposing bearing surfaces includes a plurality of generally radially directed channels, whereby a hydrodynamic load bearing pressure is developed in the lubricant between the bearing surfaces during relative rotation thereof, to thereby minimize frictional resistance and wear.

Abstract: Process and apparatus for spinning fibers into a yarn in a yarn forming zone in the gap between air permeable surfaces of two rollers or on a single, air permeable roller surface while drawing a current of air adjacent said zone through said surface or surfaces by suction means, a feed channel with a narrow mouth adjacent the yarn forming zone for feeding an air stream and individual, separated fibers therein to the yarn forming zone from a carding roller rotating in a carding chamber to which a sliver or tow of fibers is fed, a casing about the rollers and the mouth of the channel with means for maintaining a desired subatmospheric to superatmospheric pressure in the casing and especially in the free flight interval of the fibers from the channel mouth to the yarn forming zone, a pressurizable casing about the carding unit and at least one air passage from the casing to the carding chamber, and using sequential, cascade-type, pressure decreases in the carding chamber, the feed channel, the free flight interv

Abstract: A process and apparatus for conveying a plurality of parallel individual strands into a composite strand, each individual strand being conducted between a delivery means and a draw-off means in common to all strands, all of the individual strands as well as the composite strand having adjustable speeds, wherein means are provided for measuring, comparing and controlling the speeds and tensional forces in the individual strands and in the composite strand to ensure a high quality plied or composite strand.

Abstract: An improved means for mounting the induction coil of an inductively heated godet about the magnetic core thereof so as to eliminate any movement or play therebetween in operation caused by heat expansion and vibration. The improvement comprises placing an elastic intermediate piece between the coil and magnetic core which compensates for any unequal thermal expansion of these elements. In the preferred embodiment of the present invention, the intermediate piece is constructed of a hose-like hollow chamber through which a coolant under pressure is circulated from an external source.

Abstract: An improved chucking spindle arrangement for use in a thread winding device wherein a removable bobbin carrier is slipped about the chucking spindle. The improvement comprises an actuating means for moving the bobbin carrier clamping elements, which are axially distributed about the outer circumference of the chucking spindle, into their retracted or released position when it is desired to change the bobbin carrier. In the preferred embodiment, the actuating means is a compressed air operated annular piston ring which is slidably mounted about the chucking spindle and which engages the bobbin carrier clamping elements which are mounted in common cages. These clamping elements may operate according to the so-called "freewheeling" principle which assures the self-locking of the bobbin carrier.

Abstract: Bobbin transport devices with a swingable carrier and a bobbin receiving member adapted in a first pivot position to align with a bobbin on a winding machine, a second swingable carrier with its own bobbin receiving member which aligns with the first bobbin receiving member, a shifting member for varying the distance between the two bobbin receiving members, e.g., a piston rod adapted to engage the bobbin on a slide or trolley member for one swingable carrier, and a rack and pinion or pressurized fluid operated lift for the aforementioned structures.

Abstract: Winding machines having a traversing member, a contact roller, said roller or a winding tube chuck being mounted on a linearly movable carriage moved by piston-cylinder members, pneumatically operated control systems connected with said piston-cylinder members to move said carriage horizontally or vertically relative to the winding package or the contact roller, and frictionlessly operating membrane cylinder(s) mounting a support member for the carriage-mounted chuck or contact roller on the carriage, the pneumatic control system and membrane cylinder(s) maintaining constant pressure between the winding package and contact roller.

Abstract: A filament winding machine having a winding spindle driven by an rpm-controllable electric drive motor, a contact roller in frictional contact with the rotating winding being formed and driven by a synchronous or an asynchronous, 3-phase electric motor and an electric control circuit responsive to deviations in the measured effective power absorption of the latter motor for maintaining a constant linear take-up velocity of the filaments onto the winding.

Abstract: Holding means for a nozzle plate in apparatus for extruding a thermoplastic polymer melt, especially in melt-spinning apparatus for producing synthetic filaments from a fiber-forming polymer, said holding means essentially including a housing having a cavity open at its discharge end to receive the nozzle plate arranged perpendicularly to the axial direction of the flow of the polymer melt therethrough and having a peripheral groove near its discharge end for removably inserting a plurality of supporting ledge elements for seating the nozzle plate, preferably in a self-sealing assembly with a sealing ring or gasket contacting the directly adjacent bearing surfaces of each of the nozzle plate, the supporting ledge elements and the inner wall of the housing.

Abstract: Melt spinning apparatus for producing polymer filaments from a plurality of spinning nozzle units connected in parallel to a common melt extruder through a common metering pump and filter arranged in sequence in the melt feed line, each spinning nozzle unit having individual pressure regulating means at its feed side such as a throttle, adjustable valve or the like.

Abstract: A thread winding machine or similar winding apparatus with a bobbin revolver carrying at least two chucks rotatable or pivotable between a winding position and an inoperative position, the machine including ejector means automatically dislodging a finished bobbin package from its chuck upon reaching said inoperative position, e.g. by means of a push member engaging the inboard end of a bobbin tube on which the package is wound, and take-up means maintained in close proximity below the finished package at the inoperative position to act as a package receiving cradle mounted slidably on the machine for movement axially outwardly of the chuck and to support the dislodged package in a rest position forward of the chucks, i.e. in front of the outboard end of the chucks, and free of interference from a new package being wound on the chuck in the operative winding position.

Abstract: A winding machine comprising a traversing mechanism, a yarn-contact roller acting as a measuring and/or drive roller and adapted to be brought into contact with the winding tube or bobbin, and a bobbin revolver which is adapted to be rotated and locked in position and on which are mounted for rotation at least two tube chucks which are alternately brought into friction contact with the contact roller in a bobbin-changing position.

Abstract: Ejector mechanisms coaxially mounted about shafts of a winding tube-holding chuck having tube-engaging means releasable upon rotation of the tube relative to the chuck, and the ejector having an ejector head with a concentric tube-engaging surface moveable into contact with the end of a tube and simultaneously imparting rotation to the tube in the tube-releasing direction of rotation.

Abstract: Simultaneous production of a large number of winding packages of filaments of flat, round or profiled cross section by apparatus including extrusion devices, at least one cooling device, guide means, after-treatment devices (stretching, heating, etc.) and winding devices.