Abstract: A ship propulsion system in which the ship's propeller is connected with its propeller shaft directly to a drive mechanism. A thrust bearing in the drive mechanism receives directly the thrust of the propeller shaft. An auxiliary drive with an electrical machine is operable selectively as a motor or as a generator, and a coupling is provided between the electrical machine and transmission linkage in the auxiliary drive. A gear on the transmission surrounds the propeller shaft, and a flexible coupling connects the transmission to the propeller shaft. Mounted on a separate section of the propeller shaft between the transmission and the drive mechanism, is a shiftable coupling which is free of play and transmits torque from the drive mechanism to the propeller shaft as well as the thrust of the propeller shaft. An auxiliary thrust bearing is connected to the shiftable coupling and is actuated when the ship is in auxiliary or emergency operation during which the propeller shaft has a reduced thrust.

Abstract: A method of manufacturing helical springs from steel wire. The springs' skin is thermomechanically hardened by shot peening the unstressed springs followed by thermally destressing them, and shot peening them again. The second shot peening is carried out in at least two steps. The method produces springs that are just as strong as conventional but smaller and lighter in weight. The first one of the steps is a rough shot peening with shot that is coarser than in the second one of the steps which is a fine shot peening was shot at a lower speed than in the first step. This increases compression of the wire's surface and polishes the wire's surface.

Abstract: A roller grate arrangement for garbage-incinerating plants, in which a plurality of rollers with horizontal and parallel axes lie in an inclined plane. Primary air is fed to interiors of the rollers by air boxes located below the grate. The rollers have surfaces with air gaps for supplying the primary air, and the rollers are positioned to form a space between adjacent rollers. A component in the space between adjacent rollers, bridges the space between adjacent rollers. The component is free of air passages. Blast pipes are positioned in spaces between adjacent rollers and are connected to a separate system for feeding supplemental air.

Abstract: A burner for the combustion of coal dust in which a stream of primary air and coal dust mixture is conducted through a dust conduit connected to a primary dust tube. A secondary air tube surrounds the primary dust tube, and a tertiary air tube surrounds the secondary air tube. The secondary and tertiary air tubes are connected to a helically-shaped input housing, and a conically flared section extends from each of the secondary and tertiary air tubes. An angular momentum is applied in the dust conduit divides the primary air and coal dust mixture into high-dust and low-dust partial streams, so that the high-dust partial stream flows through the primary dust tube, and the low-dust partial stream flows through the primary gas tube.

Abstract: The compass according to the invention comprises a compass top and two compass legs (1,2) mounted rotatably in the compass top, the compass top comprising two top-halves (3,4). Provided in each compass-top half is a bearing pivot (19) for respectively bearing a compass leg, as well as a counter-core (20) which, in the assembled state, engages in the bearing pivot of the corresponding compass-top half. A permanent and even radial frictional clamping is thus produced. At the same time, the counter-cores bring about a limitation to the opening of the compass due to corresponding in the compass legs.

Abstract: A roller grate arrangement for garbage-incinerating plants, in which a plurality of rollers with horizontal and parallel axes lie in an inclined plane. Primary air is fed to interiors of the rollers by air boxes located below the grate. The rollers have surfaces with air gaps for supplying the primary air, and the rollers are positioned to form a space between adjacent rollers. A component in the space between adjacent rollers bridges the space between adjacent rollers. The component is free of air passages. Blast pipes are positioned in spaces between adjacent rollers and are connected to a separate system for feeding supplemental air.

Abstract: An opening arrangement in which a sliding plate accommodates a soot blower lance to be inserted into a medium-pressure gas-accommodating space through a tube cage in a boiler heated by waste heat. A soot blower box is provided with an elongated slotted hole. A frame is located between the sliding plate and the slotted opening, and a sheet of ceramic fiber is secured in the frame.

Abstract: A method of injection-molding three-layer moldings, especially bottle blanks, having inner and outer layers of a "material A" and of a "material B". Material B can be a material that acts as a barrier against the gases O.sub.2, CO.sub.2, and SO.sub.2, and against water vapor (H.sub.2 O). The method employs a device that comprises at least one mold and at least one flat hot runner. The mold has several cavities and the hot runner has the same number of dies. Material A is supplied to the cavities (1.1) through an annular gap between the inner (2.1) and the outer (2.2) component of each die. Material B is forced into the cavities through a hollow needle (3) that extends through the center of the inner die component by a piston (4) that is integrated into the die and cannot rotate. The needle has a port (6) that opens into it at a right angle and remains open as long as the needle remains advanced, in a closing position, and that is blocked when the needle is retracted. A reservoir (3.

Abstract: A proportional valve for a hydraulic dashpot, with a piston that slides back and forth on the end of a piston rod in a shock-absorbing cylinder. The piston is provided with pressure-sensitive valves for the exchange of fluid during suction and compression states and separates the cylinder into two compartments. Passages are provided for the fluid that applies pressure to the valves to flow through. Space that communicates with whichever compartment it faces and supplies regulating pressure to the particular shock-absorbing valve is provided on the side of the shock-absorbing valve that faces away from the passages. The piston is mounted on a control bolt. The control bolt has two valve seats and two bypass systems. One seat is associated with an electromagnetic spool accommodated in the first bypass system and chokes the fluid flowing through it.

Abstract: A continuously operated boiler heated with a pressurized circulating fluidized bed firing consists of a fluidized bed burner chamber (1) and one or more cyclones (5) connected in series after the fluidized bed burner chamber (1) and on the flue gas side. A fluidized bed cooler (12) is connected in series after each cyclone (5) which cooler is connected by way of a dip pot (8) with the solids output of the cyclone on one hand and with the fluidized bed burner chamber 91) on the other hand. A return conduit (10) is connected with the dip pot (8) which opens into the fluidized bed burner chamber 91). Pressure vessels (18, 19) house the fluidized bed burner chamber (1), the cyclone (5) and the fluidized bed cooler 912). The fluidized bed cooler (12), the cyclone (5) and the dip pot (8) are thereby combined into a unite which is housed in the common pressure vessel (19).

Abstract: A transmission for a twin-screw extruder with a housing (1) that accommodates a take-off shaft (5) driven by a gear and another take-off shaft (11) driven by the first take-off shaft and two distributor shafts (9) on each side. The housing is divided along a sectional joint (18) into directly connected halves (19 & 20). The housing has only one sectional joint, which is vertical and extends along the second take-off shaft. The second take-off shaft and the distributor shafts are accommodated in the sectional joint, the first take-off shaft in one housing half (20), and the driveshaft in the other housing half (19).

Abstract: The invention proposes a body showing an antibacterial effect for application as a medical or surgical aid, wherein the body is designed as a flexible synthetic-material hose (8) that is provided with an antibacterially-acting coating, and the hose (8) is provided with a slit (8a) over its entire length.

Abstract: A method of producing cold-rolled, high-strength steel strip with good plasticity and isotropic properties out of steel comprising no more than 0.08% carbon, no more than 10% silicon, no more than 1.8% manganese, between 0.010 and 0.10% phosphorus, no more than 0.02% sulfur, no more than 0.08% aluminum and no more than 0.008% nitrogen by weight plus one or more of the elements titanium, vanadium, niobium, and zirconium, the remainder being iron, by hot rolling, cold rolling, and recrystallization annealing; followed by temper rolling. The steel contains either three times as much titanium or six times as much niobium or zirconium as nitrogen.

Abstract: Apparatus of injection molding three-layer moldings, especially bottle blanks with an inner and an outer layer of polyethylene terephthalate and a middle layer of recycled polyethylene terephthalate, employing a mold with several cavities. The material (component A) for the inner and outer layers is supplied through one molten-component conveying channel and the material (component B) for the middle layer through another molten-component conveying channel. The channels are separately heated and their temperatures independently regulated. The melt for component A flows the same distance as the melt for component B. The melts flow into the injection-molding dies such as to ensure a uniform front.

Abstract: The invention concerns a device for the regulation of a constant outflow from a liquid container, in particular from a rain reservoir, with an outflow opening for the liquid, wherein to the outflow opening is assigned a movable throttle element, which in dependence on the liquid level regulates the outflow of the liquid from the container.According to the invention, it is proposed that a component part (2) that is form-changeable in dependence on the fluid pressure control the throttle element, wherein takes place the stopping-down movement of the throttle element against a restoring force (spring 5).A device of this sort makes possible a regulation of a constant outflow from a fluid container, without requiring for this the use of a float.

Abstract: An elongated element, for example, a soot blower for the cleaning of wall surfaces, is guided along a predetermined, meandrical blow figure. The element is supported in two spaced-apart cardanic joints (3, 4) the first of which is stationary and the second axially moveable on a first spindle (6) the ends of which are axially moveable on two parallel second spindles (8). The first and one of the second spindles (6, 8) are each provided with two non-mechanical, inductive proximity switches or end switches (11-14) which are connected with a controller (16) having a memory and being programmable. The end switches (13, 14) detect a reference point in horizontal and vertical directions, and two end switches (11, 12) detect the rotations of the spindles (6, 8) as a measure of the distance travelled by the second cardanic joint (4).

Abstract: A ballistic beam used in special purpose vehicle in which a core with kinetic energy absorbing strength is positioned inside, and the outer shell with shock absorbing property surrounds entirely the core. The core is made of steel or other alloys of iron, other metal, metal alloys, cermets, ceramics, or combinations thereof that are either treated or untreated. The outer shell can be made of fabrics and is made of glass fiber, carbon, aramid, polyamid, polyester, polyethelene or hybrids of these materials. Bullets or splinters can be stopped effectively and cannot penetrate inside the vehicle. It is also possible to achieve minimized weight of the ballistic grill.

Abstract: The objects are a reliable and economical method of and device for manufacturing helical springs that are curved when unstressed from sections of wire or rod heated to coiling temperature. The spring is coiled straight and then curved it to its final shape. The device consists of a hot-coiling production line comprising a kiln (1), a series of rollers (2), a coiling bench (4), and a quenching tub (6). A tool (5) for curving helical springs (10 or 14) is integrated into the production line between the coiling bench and the quenching tub.

Abstract: Drive with a belt-driving wheel and a belt-motion deflector with a transmission member in the form of a belt wrapping around them in a continuous loop. The belt is in form-fit engagement with and is driven by at least the belt-driving wheel. Structures are distributed at least part-way along the belt and form fit matching structures on at least the belt-driving wheel. The belt is woven and the structures are applied to the belt in a separate step.

Abstract: The invention concerns a device for rinsing a fluid-storage space that is provided with a rising chamber fillable with a fluid arranged in the region of the high point of the storage-space floor, which chamber, when the storage space runs empty, abruptly lets the fluid run out through a rinse opening as a rinsing torrent. The rinsing device has a container that serves to hold the rinse fluid; the container is either raisable, so that rinse fluid floods out through its bottom opening, or else the upper edge of the container is lowerable, so that the rinse fluid, coming forth from here, can flood out radially.