Abstract: In the case of thermal power installations in which a gas turbine and a steam turbine jointly drive a turbo generator, the slip rings (8, 9) are arranged on a separate slip ring shaft (14) which is connected to the actual shaft or machine shaft (10) of the electric machine by means of a first detachable coupling (11). The slip ring shaft is provided on its end averted from the electric machine with a coupling flange (15) which is not connected to the slip ring shaft (14) by welding until after the slip rings (8, 9) have been pushed on.The use of an expensive shrink-on coupling between the turbo generator and steam turbine is avoided in this way without increasing the overall length of the turbo generator.

Abstract: The invention relates to a method and to apparatus for processing a specimen, particularly an integrated circuit, in which an area of the specimen to be processed is scanned with a corpuscular beam and at least one gas is supplied above the area to be processed so that with the aid of the corpuscular beam a chemical reaction takes place on the area to be processed. The processing speed can be markedly increased by the use of a magnetic field in the region of the probe.

Abstract: In gas-cooled electrical machine with an axial fan (9) at one shaft end and with a rotor (1) and a stator body surrounded by a machine housing (14), a gas-guide device (18) arranged coaxially to the rotor shaft is provided in the outflow space (17) of the axial fan (9), out of which gas-guide device the cooling gas conveyed by the axial fan is fed to the rotor and to the stator body and stator winding. Said gas-guide device (18) comprises a plurality of guide rings (19-25) in the form of a cone envelope and spaced radially from one another and a ring part (27) likewise in the form of a cone envelope, which rings and ring part are connected to one another and to the machine housing (14) directly, or indirectly by means of bars (28, 29) extending essentially radially and/or guide plates (36, 36'). Ring-shaped channels (K.sub.1, . . . , K.sub.

Abstract: In the case of a gas-cooled electrical machine, the effective flow cross-section of the connection from the outer hot-gas chambers to the cooler is provided with an adjustable restrictor device (29, 31; 32, 33). In this way, the splitting of the various cooling-air flows within the machine can be influenced, without intervention in the actual machine, such that equalization of the temperature level in the machine longitudinal direction is achieved.

Abstract: The device for holding the ends of the turns of a stator winding in a dynamoelectric machine comprises an inner ring (15) and a segmented outer ring (10). The stator winding, which consists of bottom and top bars (5, 6), is supported at the end side on the said outer ring (10), which in turn is supported by brackets (8) which are fastened to the machine end face. The bottom and top bars are spaced from one another by pressure hoses (13) filled with synthetic resin. The inner ring (15) consists of two rings having a closed inner conical ring (15b), an outer, preferably multipartite conical ring (15a) and support segments (15c), it being possible for the two conical rings to be braced axially with one another. A winding overhang support constructed in such a way fulfils all practical requirements and can also be reclamped subsequently.

Abstract: In order to cool a rotating electrical machine having an open cooling circuit, mechanically filtered environmental air is normally passed through the cooling ducts in the stator and rotor and the machine air gap (22) by means of fans (15) which are arranged on both ends of the rotor shaft. If the air which is taken from the environment is contaminated with hazardous materials, it is proposed to supply the prefiltered air directly to the stator and the machine air gap and to subject only the cooling air which is to be supplied to the rotor to refiltering in an activated charcoal filter (30). In this case, the mechanically filtered cooling air which is to be supplied to the stator and possibly the machine air gap is passed through the fans, while the refiltered cooling air which is to be supplied to the rotor is passed into the rotor on a separate route. The cooling air for the rotor is in this case preferably conveyed by the rotor's own ventilation.

Abstract: The winding overhang support of a turbo-generator comprises an inner ring (12) which fits closely, either directly or with the insertion of an interlayer (14), against the ends of the turns of the stator winding (4, 5), which ends widen like an internal taper, and a multipart external support comprising rings (9, 27) and supporting brackets (7). The supporting brackets (7) are attached to the end of the stator core end plate (3) of the laminated core. The first outer ring (9), which is composed of insulating material, fits closely against the outside of the free ends of the supporting brackets (7). The second outer ring (27) is manufactured from high-strength nonmagnetic steel and is supported on a shoulder (26) on the stator core end plate (3) and is attached to the supporting brackets (7). There are double-wedge clamps (16, 17, 20) between the inward-facing surfaces (18, 19) of the supporting brackets (7) and the ends of the turns.

Abstract: A rotor of a turbogenerator having direct gas cooling of an excitation winding conductor. An insulating strip is provided between a slot base and the excitation winding conductor. A resiliently elastic intermediate layer, which may be in a form of a corrugated spring, is provided between the insulating strip and the excitation winding conductor in order to compensate for seating phenomena of the excitation winding. This corrugated spring extends in a direction of the rotor body center, originating from the body end. In order to fix this corrugated spring axially without the cross section of the keyway being constricted, the corrugated spring has a pair of projections which point downwards and engage in lateral recesses in the insulating strip.

Abstract: Horizontal-axis electrical machine having a stator laminate core (1) which is arranged in a housing (2, 3) which is split horizontally, which stator laminate core (1) is clamped by means of fastening wedges (35), which are distributed over its circumference, in supporting rings (32), which are arranged orthogonally to the machine longitudinal axis and are spaced apart from one another. The supporting rings are connected on their external circumference, via fastening parts (39, 40), to the housing lower part (2) of the machine. The supporting rings (32) have azimuthal fastening plates which run symmetrically with respect to the vertical plane of symmetry of the machine.In order to decouple the stator laminate core (1) from the housing lower part (2), the fastening plates (40) are fastened to the said supporting rings such that they are sprung horizontally in the radial direction, the fastening plate (40) itself being constructed as a leaf spring, or acting as such.

Abstract: In the arrangement for fastening a machine part on a foundation by using vertical anchor studs, a multiplicity of vertical anchor tubes are cast into the foundation and these are connected to one another, at least in groups, by means of an auxiliary frame. Provided at the lower end of each anchor tube, there is a ring whose inner diameter is greater than the outer diameter of the anchor stud and whose outer diameter is greater than or at least equal to the outer diameter of the anchor tube. A space with an essentially square outline is recessed in the foundation underneath this ring. Laid in this space with clearance, there is a threaded nut with an essentially square external contour and a height smaller than the clear height of the space mentioned, the lower end of the anchor stud being able to be screwed into this threaded nut. This design makes it possible to omit expensive templates when casting the foundation.

Abstract: In gas-cooled electric machines having a stator (3) and a rotor (6) on which an axial ventilator (9) is arranged, the cooling gas flows unevenly into the end-winding cavity (13) seen in the circumferential direction. By providing upstream of the axial ventilator (9), when seen in the direction of flow of the cooling gas, and coaxially with said ventilator an annular air guide member (1) having baffles (17), and reducing the flow cross section for the cooling gas flowing through the air guide member (1) in the main direction of the approach flow on a part of the outer circumference of the air guide member (1) by means of a covering (23), the cooling effects becomes more even and the axial ventilator (9) is better utilized.

Abstract: In the gas-cooled electric machine, the stator winding bars, which are connected to one another electrically and mechanically outside the stator core assembly (2) in the overhang space by means of metallic lugs, are provided with caps (8) which virtually completely surround the lugs while leaving free one or more approximately axially extending ducts (9). These ducts (9) are open towards the stator core assembly (2). At its end on the partition side, the cap (8) has an opening (10) which is freely connected to said ducts (9). A flexible line (11) leads from this opening directly into the suction chamber (14) of the fan (5).As a consequence of the pressure difference between the suction chamber (14) and overhang space (13), some of the coolant conveyed by the fan (5) flows through said ducts and cools the rod ends and lugs (7).

Abstract: In horizontal-axis electrical machine, a laminated stator core is provided with a stator frame consisting of support rings and axial support bars. The frame is suspended in a housing by means of a bolt arrangement. In this arrangement, the construction is suspended in such a manner that the stator is held in place elastically in the axial direction, and rigidly in the radial and circumferential directions.

Abstract: A stator laminated core (1) of a horizontal-axis electrical machine is supported by means of at least two parallel bearing plates (3), perpendicular to the axis of the electrical machine and at a distance from each other. In order to minimize vibrations and thermal stresses occurring during the operating state of the electrical machine, the bearing plates (3) are of annular design and are connected to the bottom casing section (8) only in two regions of their horizontal plane of symmetry, on either side, via vertical linear extensions (4) by means of attachment parts (5). By far the greatest part of the circumference of the bearing plates (3) is at a distance from the bottom casing section (8) and the top casing section (9). The stator laminated core (1) is braced in the bearing plates (3) by means of attachment wedges (6) evenly distributed around its entire circumference. The attachment parts (5) include attachment plates (15) which are each welded to the extensions (4) of the bearing plates ( 3).

Abstract: A pick-up unit in a printed sheet transport device for a printing machine includes a gripper shaft, a number of grippers and a number of corresponding counter gripping members, and a traverse which encloses the gripper shaft and the grippers at three sides. The traverse has a front wall, an upper wall and a rear wall; the latter extends to a plane of transporting of the printed sheet at an acute angle and is formed with a projection which extends inwardly from the rear wall of the traverse.

Abstract: A jogger for lateral alignment of sheets in a sheet-delivering device of a sheet-processing machine, such as a printing machine, has displaceable diaphragm; resiliently yieldable member; and a pusher member connected with the diaphragm and the resiliently yieldable member so that upon displacement of the diaphragm in one direction, the pusher member first moves toward a sheet-delivery device against the force of the resiliently yieldable member and then tilts after contacting a sheet stack in the sheet-delivery device, wherein the diaphragm is elastic and pneumatically impingeable to perform the displacement, so that the pusher member automatically adjusts upon the sheet stack.

Abstract: A device for positioning sheets in a stack in a sheet-processing machine includes a number of stops positioned at the front edges of the sheets being stacked for aligning the front edges of the sheets, and two joggers located at lateral sides of the stack. Each jogger includes an oscillating plate having a horizontal arm and a vertical arm which extends towards the upper end of the stack. The plate is provided with a drive imparting the oscillating movement to the vertical arm thereof.

Abstract: Grippers pull the leading ends of sheets along a sheet transport path, and a guidance structure facilitates sheet travel. The guidance structure comprises a plurality of longitudinally extending guide bars provided with suction openings, the ribs spaced apart transverse to the sheet-transport direction. Intermediate the bars are large-surface-area plates having suction openings. When guiding sheets printed on only one side, the intermediate suction plates are at about the same level as the longitudinally extending guide bars, and the entire face of the sheet is engaged, with the help of suction force. When guiding sheets printed on both sides, the imtermediate suction plates all drop down out of contact with the sheet, leaving only the spaced apart and narrow longitudinal guide bars to engage the sheet. The guide bars are furthermore transversely shiftable, so that they can be brought into engagement with parts of the sheets bearing no printing.

Abstract: A printing machine has a plurality of printing stations which print images on both major surfaces of each sheet passing through the printing machine. A reversing arrangement turns the respective sheet between two of the printing stations so that the major surface of the respective sheet having a fresh image thereon faces downwardly. A support arrangement is provided which supports this sheet during its advancement to the next following printing station, and includes a blow casing having upwardly oriented passages through which air issues in upward direction to create an air cushion between the respective sheet and the blow casing for supporting the respective sheet during its advancement. An elongated bracket is arranged upwardly of the blow casing and supports a region of the respective sheet which is devoid of the image, during the advancement of the sheet in a path portion located upwardly of the blow casing.

Abstract: A housing of the apparatus has two sections which are relatively pivotable between an open and a closed position. A drive is provided in one of these sections for rotating the record carrier and includes a rotary support for the record carrier and a spindle which extends through a center opening of the record carrier. A self-centering element is provided in the other housing section, being mounted therein with freedom of play so that it can center itself relative to the spindle in response to movement of the housing sections towards their closed position, the element being adapted to snap in its centered position against a record carrier on the support when the housing sections move to their closed position, so that the element rotates with the support and record carrier.