Abstract: A method of operating air-compressing direct-injecting internal combustion engines including at least one piston with a combustion chamber of a shape of a body of rotation, and a fuel injector with a controllable outlet and a throttle member for controlling the fuel injection-pressure is disclosed. The velocity of combustion air rotating about the longitudinal central axis of the combustion chamber and the velocity of the fuel stream when leaving the injector are coordinated to one another. The surface area of the fuel which is contactable by combustion air is controllable so that on increase of the speed of the internal combustion engine the surface area is decreased.

Abstract: A power take-off of an internal combustion engine, typically an Otto-cycle or Diesel engine, for auxiliary machines, such as compressors, pumps, etc., with the input shaft of the auxiliary machine being drivingly connected with the output shaft of the internal combustion engine via gears. To change the step-up/step-down ratio, the shaft center spacing between the input shaft of the auxiliary machine and the output shaft of the internal combustion engine is variable in a manner that the drive pinion is supported in an eccentric bearing bushing which, in turn, is arranged axially displaceably and rotatably in a flanged housing. The eccentric bearing bushing has a flanged part having axial holes to alternatively accept a locating pin.

Abstract: A workpiece of a highly heat-resistant steel containing nickel or of a nickel-base alloy is provided with a hard coating containing titanium. An intermediate layer of an intermetallic phase Ni.sub.3 Ti intervenes between the core material and the hard coating. The deposition of the intermediate layer of the hard coating is achieved by means of separation in a gaseous phase.

Abstract: An apparatus for positioning supply connections such as cables or connecting hoses into operative association with a mining extractor machine which is movable against a working space along a mining longwall by a longwall conveyor and in a mine between adjacent adits and to the stowage side comprises a connection winding and unwinding drum positionable in an adit and having a supply connection thereon which is unwindable from the drum guided to a supply connection conveyor which moves along the longwall with the extractor.

Abstract: In a liquid packing, the inlet pressure of the sealing liquid is substantially increased above the gas pressure at the high pressure side, by means of a centrifugal packing which is enclosed at both sides by an annular floating body and provided, at both sides, with flow passages and, radially farther, with annular flanges to obtain a safe seal. Check valves opening at a definite intermediate pressure effect a flow of the sealing liquid through the high pressure-side sealing gap between the shaft packing and the floating body and passages in the floating body, to mix it with the supplied sealing liquid, whereby the friction heat produced in the sealing gap is removed to a large extent.

Abstract: A valve is provided comprising a nozzle body formed with an internal space having an axis and a single valve seat adapted to receive fuel under pressure. It further includes a single nozzle needle movable in said space relative to and axially of said valve seat; and means including a single spray passage communicating with said valve seat for discharging from said nozzle body a jet of fuel having a spray pattern and an angular orientation relative to said axis which varies as a function of the distance of the single needle from the single valve seat.

Abstract: The twin exhaust-gas-powered turbines (9, 10) driving intake air compressors (1, 2) for an internal-combustion engine are connected together and mounted on central support brackets (47, 48) by a common turbine discharge housing (20) that deflects the discharge of each turbine separately towards an outlet funnel (24) with the help of a guiding structure that contains a median wall (33). Diffuser horns (31, 32) and hollow central plugs provide, in a short axial distance, for establishing a static pressure for causing the gas to flow with uniform pressure distribution out through the discharge funnel (24). The latter portion of the outflow path is enlarged by side pieces (26, 27) fitting over holes in the central piece (20) of the discharge casing through which the diffuser horns (31, 32) protrude with ample spacing from other components.

Abstract: A radiation receiver which includes a hollow body having an opening for the inlet of radiation, and a ceramic absorber arranged within the hollow body adapted to absorb the radiation energy received through the opening and to deliver it to a heat carrier medium in the form of thermal radiation.

Abstract: A device for extending supply lines to winning machines in mining operations comprises a traction chain housing which includes a covered guide for a traction member such as an endless conveyor chain. The traction member rides in the housing and is preferably covered thereby both in respect to its upper and lower reaches. A supply line support bar is secured to the traction members at spaced locations along its length for movement therewith and has a forked support extending outwardly from the housing which has one leg portion defining a support over which the supply lines are laid and another leg portion covering the supply lines. The device may be made with an endless chain conveyor which has upper and lower reaches as well as a chain conveyor having side by side reaches and in each case the housing or a cover for the housing provides for the lateral extension of the forked portion of the supply line support bar.

Abstract: A sea anchoring system for anchoring floating sea stations to a sea bed floor such as on a foundation or a stay block comprises a tension member connected between a floating station and the sea bed foundation or block with a plurality of tension members connected between the bed foundation and the floating station through universal joints. The universal joints include an assembly comprising an inner spherical body and an outer spherical body arranged over and slightly embracing the inner spherical body. The outer spherical body includes an opening on one side and a pin connected to the inner spherical body and extends through this opening and is connected, for example, to the foundation or to the floating body. The outer spherical body has a connection for example to the tension member. The inner and outer spherical bodies have spherical surfaces facing each other and at least one of these surfaces has a lining of a material which permits sliding interengagement with a minimum friction and wear.

Abstract: A power divider gearbox including a planetary differential gear drive, comprising dual planetary gears which mesh with two sun gears having different diameters and with an internal ring gear, wherein the planetary differential gear drive divides the incoming power input transmitted to the power divider gearbox through an input shaft into a mechanical branch and into a hydraulic branch (displacement machine) and in which the last-mentioned branch is connected to the internal ring gear of the planetary differential gear drive.

Abstract: An oil pump arrangement for the pressure oil supply for internal combustion engines, especially a gear oil pump, which includes impeller gears housed in a pump housing. The gears are driven by the internal combustion engine and the pump housing is connected with a suction pipe and a pressure pipe. The pump housing is arranged in an unmachined recess provided at the side of the timing gears in the crankcase. The pump housing is open on the side of the driving means for the impeller gears and is flanged to the timing gear case of the internal combustion engine. The timing gear case forms the closure of the pump housing and the recess, and at least the driving means for the impeller gears is supported in the timing gear case.

Abstract: A device for feeding welding wire in a submerged arc welding operation in which there is a narrow gap between workpieces which are to be welded together comprises a guide support having a plurality of spaced apart welding wire straightening roller assemblies mounted thereon which are in a position at selected angles relative to each other around and in engagement with the welding wire and which define a feed guide path for the passage of the welding wire between the rollers of each assembly. A welding head is pivotally mounted on a support for pivotal movement transverse to the welding direction and the head includes a welding guide and a carrying guide which together define tongs of the head which are mounted on the support for pivotal movement toward and away from each other. Tongs carry a plurality of guide shoes which define a continuing guide path for the welding wire received from the welding wire feed guide and deliver it to the welding zone between the workpieces.

Abstract: An electric furnace or electric arc or resistance melting furnaces comprises a housing with a refractory lining which defines a furnace hearth in the housing and with a plurality of electrodes extending through the refractory having one of their ends terminating in the hearth and the opposite ends extending out of the housing. A plate is arranged in spaced relationship to the housing on its exterior and is connected to the opposite ends of the electrodes. The plate is arranged to define a cooling space outside of the housing which surrounds the electrodes. A cooling fluid is circulated into the cooling space and over the electrodes.

Abstract: A seal device for a shaft rotating with respect to a housing comprises a rotating seal ring having opposite radial side surfaces and a circumferential end surface. The rotating seal ring is connected for co-rotation with the shaft. A non-rotating seal ring is non-rotatably connected to the housing over a yielding packing element and surrounds at least a portion of the rotating seal ring to define axial plane sealing gaps and an annular circumferential gap. Sealing fluid is pumped to each gap over bores communicating with the radial plane gaps. An electromagnet is connected to the housing and attracts or repels magnetic material in a radially extending portion of the non-rotating seal ring for regulating the width of each radial plane gap. Electromagnet is connected over a control unit to a sensor for sensing each gap, to maintain a selected gap width for each gap by regulating the activation of the electromagnet. The non-rotating seal ring is also slidable within a smooth sleeve connected to the housing.

Abstract: In a ball joint accessible for inspection and connecting the service tower of an offshore station to the foundation on the sea bottom, one side of a spherical joint part is firmly connected through a neck to the foot of the tower, and the other side of the spherical part is mounted for universal motion within a joint casing which is anchored to the foundation. The two parts of the joint are connected to each other by a tension member. The spherical joint part is seated on exchangeable supporting bearings 11 which are provided within the joint casing and are well accessible. The top of the joint casing is formed by a cover ring having a collar designed as a spherical zone. From above, the ball joint is sealed and protected by a spherical cap in which an air cushion is maintained. The gap between the cover ring and the spherical joint part is sealed by a stuffing box.

Abstract: A device is disclosed for cutting two parallel partially intersecting bores, such as the bores used in a screw type compressor housing, comprising, a device housing, a pair of spindles rotatably mounted to the housing and a tool holder connected near the end of each spindle. The spindles are engaged with each other through gears so that rotation of one spindle in one direction causes rotation of the other spindle in opposite direction. A drive shaft is connected to one of the spindles for rotating the pair of spindles simultaneously. Each tool holder is elongated along a major tool holder axis thereof which is substantially transverse to an axis of its associated spindle. The major axes of the two tool holders are always substantially perpendicular to each other so that free rotation of the two spindles, in opposite directions is possible.

Abstract: The universal joint construction for use at the bottom of a connection between a surface platform and a foundation anchored on the bottom of the sea comprises an outer top ball cup which is adapted to be connected up to the platform and an inner bottom ball cup disposed within the outer top ball cup enclosing the bottom thereof. The inner ball cup has an exterior in slidable engagement with the interior of the outer ball cup and a bell forming an enclosed pressure space is defined between the exterior of the upper cup and the bottom cup. In addition a ring seal bearing is defined between the inner bottom ball cup and the outer top ball cup adjacent the edge of the outer top ball cup. The interior of the bottom ball cup carries a plurality of shoes which bear in sliding engagement with the interior of the top ball cup.

Abstract: An articulated vehicle such as, a bus having a lead car and a trailer coupled to each other through the intermediary of a central ball joint in the central longitudinal plane of the vehicle. The central ball joint transmits only horizontal forces between the lead car and the trailer and can therefore be supported through comparatively lightweight elements which require little space. The transmission of vertical forces between the lead car and trailer is effected through arms located on both sides of the joint. A cardan shaft is extended along the longitudinal center plane of the articulated vehicle from the lead car to the trailer.

Abstract: Strut of a tubular wrapping of reinforcing fibers in a synthetic resin on a core, with two rounded tension end caps, the wrapping terminating on the rounded portions thereof, and with respectively one compression cap on an outer peg of each tension end cap and around the rounded section of the wrapping, in which strut the wrapping has longitudinal fibers extended over the rounded portions about pins affixed thereat and oriented obliquely toward the outside, and the core is a fiber-reinforced synthetic-resin pipe respectively attached on an inner peg of the tension peg for the concomitant absorption of the longitudinal compression or the longitudinal compression and longitudinal tension.