Abstract: The inner spiral wall of each spiral feed duct of a turbine is provided with a slidable extension tongue with an end portion of spiral curvature mounted on a carrier plate for rotation about the machine axis. Movement of the tongue to extend the length of the inner duct wall reduces the exit cross-section of the duct while keeping a spiral shape at the duct end. The tongue may be mounted on a portion of the machine casing that is made integral with the discharge duct that is coaxial with the machine and is mounted axially rotatable on the machine casing. When an axial flow rotor is used, the ducts and tongues have deflecting rims and the tongues have end walls at the rim ends to define the zone of communication between the rotor and each duct. One of the applications of the invention is to exhaust gas driven superchargers for internal combustion engines. A discharge spiral for a rotary pump or compressor may be similarly equipped.

Abstract: An entrance step arrangement particularly for short distance vehicles, especially rail vehicles, which has at least one intermediate step, a cover for covering up the step or steps, a foldable guard plate, and transmission elements interposed between a drive and movable element, and safety devices for preventing faulty actuation of the cover, guard plate, and transmission elements. The axes of rotation of the movable elements are arranged horizontal and parallel to the outer contour of the vehicle. The guard plate which is foldable outwardly carries a step, and the step cover is pivotable inwardly behind the tread edge of the floor of the vehicle.

Abstract: A braking device for four-stroke cycle reciprocating piston internal combustion engines, especially vehicle engines, which for controlling at least each outlet valve include a hydraulically operable driving cylinder-piston unit adapted to be actuated by a camshaft, and a working cylinder-piston unit connected through at least one control conduit with the driving cylinder-piston unit and operable to actuate the outlet valve. The working cylinder-piston unit has a two-step different diameter cylinder and two plungers of correspondingly different diameters reciprocating relative to each other in the two-step cylinder. The braking device also includes a control member, e.g., a valve spool, common to all control conduits, for selectively connecting the control conduits to and disconnecting them from different driving cylinder-piston units and working cylinder piston units to thereby establish or interrupt connection between different driving cylinder-piston units with different working cylinder-piston units.

Abstract: A bogie with a torsion-soft corner-stiff frame for high speed rail vehicles with a wear-resistant means interconnecting the central areas of the longitudinal beams of the bogie together with one wear-resistant means each interconnecting the longitudinal beam ends. Of the wear-resistant means, that means which is located within the region of the vertical transverse plane is designed as an intermediate joint permitting movements solely about the y-axis, whereas the wear-resistant means at the ends form components of horizontal spring leaves which form head pieces of the bogie. The ends of said spring leaves are in a corner-stiff manner connected to stiff corner pieces arranged at the ends of the longitudinal beams.

Abstract: A bogie arrangement for self-propelled high-speed rail vehicles with at least two driving bogies supporting the vehicle body. Each of the driving bogies is powered by at least one electric motor and supports the vehicle body by a spring system while having a common pivot point with the vehicle body. The rotor of the fully spring-cushioned and transversely extending motor is operatively connected to the driving wheel set through the intervention of a transmission and a cardan quill shaft having elastic articulated bearings. The motor is held in the space between the wheel set axle and the vertical central transverse plane of the bogie transversely swingably on the understructure of the vehicle body. The longitudinally acting forces of the motor are transmitted by at least one link of considerable length from the housing of the motor to the adjacent frame section of the vehicle.

Abstract: A shaped metal base component is formed, such as by casting or forging. The component is then thinly coated with a material, such as a ceramic material, having a higher melting point than the material of the shaped component. The coated component is then heated under zero gravity conditions up to a temperature which is below the melting point of the coating, but which is high enough to soften the component, the coating maintaining the shape of the component during the heating step. After completion of the heating step, the coated component is cooled under zero gravity conditions. The forming and coating of the component take place on earth, and the steps of heating and cooling the coated component are performed in space. After cooling the coated component, the coating is either stripped off the component or left on the component to form an integral part of the shaped body.

Abstract: An electromagnet including a magnetizable yoke, an exciter coil system, and a movable armature. The end surface of at least one pole shoe carried by the yoke is divided into at least two discontinuous partial surfaces separated by a space. At least one control coil system includes a coil at least partially within the space and arranged to produce magnetic flux passing through the partial surfaces in opposite directions.

Abstract: A galvanic coating apparatus for coating of relatively long objects. The coating apparatus is provided with a trough for accommodating a bath liquid with the trough including two opposite end walls, each of which are provided with an opening for permitting the long object to pass therethrough. The trough is disposed in a larger container which is also provided with two openings for accommodating the object to be coated. The openings in the trough and the container are arranged such that they are in alignment when the trough is disposed in the container.

Abstract: A method and apparatus test the characteristics of rotors for hysteresis motors. A rotor to be tested is placed in predetermined spaced relation adjacent a testing stator having a stator winding. Predetermined voltage at predetermined frequency is applied to the testing stator winding while the rotor is maintained at standstill. Preferably, such voltage and frequency are the rated voltage and frequency of the motor into which it is intended that the rotor being tested will be assembled. The current thereby produced in the stator winding is measured, and the measured current is compared with a predetermined reference. The reference is preferably the current measured in the testing stator winding under the same conditions using a reference rotor that has been tested in a running motor.

Abstract: A bending-resistant gripper carriage structure is constructed in a fiber sandwich construction of the gripper carriage support. At least one layer of fibers is provided which may be in a shell-type mode with two layers of fibers each having different directions of elongation, one layer having fibers extending in the longitudinal direction of the gripper carriage support, and the other layer having fibers extending crosswise to the longitudinal direction. Several manufacturing techniques can be utilized such as fiber winding and/or lamination of fiber strips or tubes.

Abstract: In order to provide a controlled turbulence or angular momentum of air, air and fuel mixtures or similar fluids to be injected into the cylinder chamber of valve controlled internal combustion engines, control vanes are provided in close proximity to the valve retaining ring. The vanes deflect the flow of the air or air/fuel mixture without restricting the flow thus increasing the fuel flow coefficient. The vanes are curved to accommodate the fluid in-flow while ensuring controlled turbulence or angular momentum of the fluid in the cylinder chamber. The vanes can be arranged on a ring which is fastened in the inlet chamber in close proximity to the valve retaining ring.

Abstract: To prevent splashing off of water and ink emulsion from rollers in the inking system due to feedback of wetting water to the inking system, a roller of the inking system, preferably an ink supply roller accepting ink from a ductor roller, is associated with a return roller which accepts the water-ink emulsion, and a stripping arrangement which strips off that emulsion from the return roller returns the emulsion to the ink well or ink trough of the ink supply system. The stripping element may be the ductor roller itself, rotating in counter direction to rotation of the return roller, intermediate rollers in counter-rotation with respect to the ductor roller, or doctor blades, or the like.

Abstract: A folding triangle made of sheet metal is formed with a central opening through which a deformation roller, for example having teeth for perforation, or an edge for creasing of the paper web traveling over the folding triangle, is secured. A counter roller suitably shaped with respect to the deformation roller is located above the folding triangle, to be engaged by the deformation roller. The rollers are longitudinally as well as height adjustable. The apparatus is preferably associated with paper webs traveling through a printing machine.

Abstract: A flat solar collector arrangement used for collecting solar energy in which a metal tub serving as a carrier and made by a deep-drawn process, is filled with synthetic material. A heat carrier channel system and a collector plate are located on top of the synthetic material. A protective disk is connected by a rubber gasket ring to an edge of the metal tub, and a bellows-shaped device in the metal tub between the collector plate and the protective disk is used for influencing the enclosed volume. The metal tub may be made of galvanized sheet iron, and the upper rim of the metal tub is drawn outward, parallel to the bottom of the tub. The synthetic material, furthermore, may be in the form of a flaky styropor mass which serves as heat insulating material. The channel system and the collector plate are integrated as a single one-plate system. The metal tub, furthermore, has at least one opening which is closed by means of the bellows-shaped device, and is directed inward or outward.

Abstract: To permit, selectively, either continuous application of printing ink to axially oscillating inking distribution rollers of an offset printing machine, or intermittent ink supply by means of a ductor roller, an ink supply roller 6 is driven at a speed matched to the speed of a printing cylinder 13, the ink roller 6 being in continuous contact with a next adjacent roller 8 of the ink train forming the inking system.

Abstract: A plant including a power station with power station buildings of a heavy construction and with a cooling tower surrounding the power station buildings, especially a steam power plant with natural draft-cooling tower for dry cooling. The cooling tower has a manner known per se designed as double mantle construction with an inner bowl and an outer bowl surrounding the inner bowl in spaced relationship thereto. The outer walls of the power plant buildings form a portion of the inner bowl or form the entire inner bowl. The remaining cooling tower portions and the outer bowl are designed as light structures. Any portion of the inner bowl which might possibly extend upwardly from the power plant buildings rest on the power plant buildings while the outer bowl on one hand rests on the ground by way of a support structure, and on the other hand by way of wind bracing members rests on the power plant buildings.

Abstract: A cooling installation for reducing the oil temperature of oil-lubricated damping bearings, in which a cooling element is employed with one portion thereof in heat-conductive connection with a bearing housing portion, and another portion thereof immersed in the lubricating oil. The cooling element, which is preferably formed of metal wire or strips, may have the end thereof which is immersed in the oil contoured so as to increase its surface contact therewith and to thereby enhance the transfer of heat from the oil to the bearing housing.

Abstract: A naturally aspirated eight cylinder internal combustion V-engine in which the cylinders of each bank of cylinders are divided into groups of two cylinders each, and in which the inlet ports of each group pertaining to one and the same cylinder bank are brought together to a joint inlet manifold. Each two cylinders of one and the same group of cylinders have a firing interval which equals or is greater than the opening period of the respective inlet valve pertaining to the respective group of cylinders.

Abstract: An auxiliary drive assembly for use with a vehicle having a drive shaft and a driven shaft. The auxiliary drive assembly includes a flywheel as a source of energy. First and second hydraulic pump/motor units are hydraulically coupled to each other. Summation gearing is provided having a first input connected to the flywheel and to the first motor/pump unit, a second input connected to the second motor/pump unit, and an output from which power can be released. The summation gearing output can be connected to the drive shaft, by means of a releasable coupling, for driving the drive shaft or charging the flywheel. The second motor/pump unit has a brake so that the flywheel can be charged very rapidly by the drive shaft. The drive shaft and driven shaft can be separated to further increase the speed of charging the flywheel.

Abstract: A bending-resistant gripper carriage support structure for offset printing machines is constructed of at least one hollow profiled member. In particular, one arrangement includes two hollow profiled members being connected by the bearing blocks of the gripper shaft for mounting the gripper carriage in the printing machine. A further arrangement includes the use of a single hollow profiled member for the gripper carriage support with an internally disposed web structure for subdividing the single profiled member.