Abstract: A method of controlling the heating effect of high temperature gases such as gases obtained in the partial oxidation of oil asphalt, oil shale or coal and the like which are to be used for the heating of another media such as for superheating steam comprises passing the high temperature gases into a space on the way to the heating of the media and circulating a heat absorbing media such as water into the space in quantities to have a selected heat exchange with the high temperature gases and control the temperature thereof on its way to its use in a heat exchanger or superheater. The apparatus include a vessel which is connected between a superheater and a steam producing gas cooler which has an inlet for the high temperature gases which are circulated through the vessel through tubes on its way to the superheater which is disposed over the vessel and advantageously connected to it.

Abstract: An airfoil for transonic speeds includes a porous top surface extending from a location about 50 to 60% of the chord length from a leading edge of the airfoil to a location about 80 to 90% of the chord length from the leading edge. A cavity is defined under the porous surface in the airfoil which has a depth of from 0.05 to 0.2% of the chord length. The porosity of the porous surface is chosen to be from 1 to 3% of the total airfoil surface and may be variable. The presence of the porous surface and cavity decrease airfoil drag at transonic speeds by providing a pathway between a high pressure area downstream of a shock wave formed on the airfoil at transonic speeds to a low pressure area within a bubble on the airfoil upstream of the shock wave.

Abstract: The slanted closing rim of a valve plate includes a cylindrical portion at the rear side, having a diameter D1 which corresponds to the width of the plate and slightly exceeds the diameter D3 of the passage throat. A groove in the casing guides the narrow sides of the valve plate and accomodates a seal strip. The grooves partly closed at the front side by a guide strip which in the bottom zone of the passage throat is a semicircularly extending strip. The inside diameter D4 of this cylindrical strip approximately corresponds to that of the valve plate and its axis a extends at a level which is higher by half the difference between diameters D1 and D3 than that of the axis b of the throat passage. A slanted closing rim of the valve plate is provided with shear arcs on its frontal points on each of the side edges. The two shear arcs form a kind of a plowshare deflecting the medium from the seal.

Abstract: In medical apparatus important parameters are monitored by special systems. In case of irregularities, signaling urging remedy occurs. The signal is to be limited to the persons monitoring the apparatus to the extent possible and should not disturb persons not involved or present in the same room, from any delicate work they may be doing. Freedom of movement of the monitoring persons is to be preserved. To accelerate corrective measures, the signal gives them information which is easy to understand about the type of disorder. For this purpose the signal transmitters for the monitored limit values are connected to a signal converter, through which a describing text in intelligible language is assigned to each signal case. These announcements are conveyed to the monitoring persons through an output means movable with them and limited to their area, such as single earphones. The earphone is connected to the signal converter through a wireless or wire-bound movable connection.

Abstract: A power operated chuck for lathes comprises a chuck body which has a central bore with at least one groove radially extending from the bore in which a jaw is moved toward and away from the bore for clamping a workpiece in the vicinity of the bore. A receiving pocket is defined in the chuck body adjacent the groove and a key bar is movable in the pocket and has a serrated edge engaged with a serrated edge of the jaw along an engagement line which will effect shifting of the jaw and its associated groove during displacement of the key bar. The shifting element has a portion which engages the key bar for causing the displacement thereof in a controlled amount.

Abstract: A method of and apparatus for producing a controlled pressure level in a respirator for human patients which is equipped with a tracheal tube 3 connected to the respirator and connectable to the trachea, comprises producing an oscillatory gas stream by means of two opposite gas jets in an attachment tube 4 which has two end openings. By controlling the pressure and/or frequency of the gas jets, a varying pressure level propagating into the tracheal tube is modulated onto the gas stream. The respirator for carrying out the method comprises two gas jet pipes 20, 21 having nozzle tips 24, 25 of which one discharges or points within the attachment tube 4 substantially in the direction of the tracheal tube 3 and the other substantially in the opposite direction.

Abstract: In an impedance transformer circuit which is intended for capacitive voltage sources having a high output impedance, particularly for capacitor microphones, comprises two sequential amplifier stages with an overall gain of close to one. The output of the first amplifier stage having a large input impedance, and of itself, a high gain, is applied to the inverting input 2 of the second amplifier stage V.sub.2, which, of itself, again exhibits a high gain and whose output is fed back to its non-inverting input through at least one feedback loop containing the first amplifier as a resistor controlled by the capacitive transducer. Further, in AC current terms, the load resistor of the first amplifier stage is located between the inverting input and the non-inverting input of the second amplifier stage, and the reference potential "0" for the input and output AC voltage signals is not provided by any of the inverting or non-inverting inputs of the two amplifier stages.

Abstract: An improved ground-plane antenna with a quarterwave resonant radiating rod (1) made of a hollow tube in which a central earthing rod (7) is arranged to form with the internal cylindrical wall of the radiating rod a line section short-circuited at the upper end, and a further line section (16) open at the lower end is arranged in the extension of the short-circuited line section to form a combined tapped line section therewith having an electrical length substantially equal to the quarterwavelength, in which the combined line section is coupled with its tapping points in parallel to the input terminals of the antenna, whereby the susceptance represented by the combined line section is capable of compensating the changes of the antenna reactance within a fairly wide band.

Abstract: The type wheels provided on a postage or franking head of a postage meter or franking machine are adjusted in stepwise manner from outside the franking head by means of adjusting push rods, which in each case engage a pinion associated with a type wheel. The engagement and adjusting movement of the adjusting push rod is performed by electromagnets. The engagement movement takes place by pivoting a guide plate carrying the adjusting push rods, on which the rods are displaceable by means of the electromagnet counter to the tension of a tension spring. The electromagnets can be energized on the basis of an electrical pulse, which is simultaneously used for adjusting an electronic display, provided on the franking machine casing.

Abstract: A projectile particularly for automatic firearms in high performance machine guns comprises a cylindrical projectile body which has an annular groove around its circumference with rib portions extending radially outwardly of the bottom of the groove which are of radial extent no greater than the outer surface of the projectile body. The groove has end walls which are substantially perpendicular to the exterior surface of the body. A plastic rotating band has its inner periphery anchored in the groove with the rib portions extending to receiving recesses or grooves of the band. The ribs are advantageously radially extending elements which have their outer ends bent in axial directions and they are arranged so that there are portions of the groove of the body on each side thereof. In accordance with the method of manufacturing a projectile body, a form tool is used to effect the recessing of the projectile body or jacket to produce the intermediate ribs which are of substantially rectangular cross section.

Abstract: A method of dry cooling coke using a coke transporting bucket which has a removable cover with an exhaust pipe extending from the interior of the bucket to an exterior exhaust connection and a cooling shaft for the coke comprises directing red hot coke into the bucket, covering the bucket with the cover and transporting the coke to the cooling shaft and connecting the exhaust pipe to the exhaust system while the bucket is in the shaft and emptying the bucket into the cooling shaft. The coke transporting bucket comprises a container having a bottom discharge which is closable by a flap and a removable cover which seats around the rim of the container to seal it. An exhaust pipe is carried by the cover and it extends into the interior thereof for removing gases from within the bucket and delivering them to an exterior connection which is connectable to an exhaust line.

Abstract: A small car body comprises a lower half part which is integrally molded of a synthetic resin, and a front panel, a roof panel and a roll bar panel which are jointed to the lower half part. The small car body includes a chassis frame in the lower half part which is provided with a front wheel suspension arrangement. The lower half part has a central indented area for accommodating seats and outwardly extending skirts for accommodating the chassis frame.

Abstract: A commutator device for miniature motors comprising commutator segments, each segment having an arc-shaped commutator part and a terminal part standing upright from the commutator part; the commutator part being mounted on an insulating cylinder and the terminal part being bent to hold a lead wire connected to an armature winding wherein the terminal part of the commutator segment has a neck portion at which the transverse crosssectional area of the terminal part is made smaller than the transverse crossectional area of other portions therof, and an arrangement for easily bonding the lead wire to the neck portion is provided so that the lead wire is held in position by bending the terminal part at the neck portion thereof, and welded to the terminal part with resistance welding.

Abstract: A web punched by a fin press and continuously fed therefrom is intermittently fed by increments equal to a desired number of tiers of punched holes in the web into a space below a pressure plate. The web is then held under suction by the pressure plate and cut off by a cutter into a plate fin. The pressure plate with the cut-off plate fin held thereby is horizontally fed along an interval in the direction in which the web is fed. The plate fin then is released from the pressure plate so as to drop onto a mobile carriage below the pressure plate until hairpin pipes carried by the mobile carriage in upstanding disposition are inserted through the punched holes in the plate fin. The pressure plate moves back to its original position. The above cycle of operation is repeated until a prescribed number of plate fins are fitted over the hairpin pipes. Thereafter, the pressure plate is lowered to depress the plate fins for thereby stacking the plate fins on the hairpin pipes.

Abstract: There is provided a cyclone which has a guide plate for conducting a fluid into a fluid-discharge pipe, the guide plate taking the place of a portion of a fluid-discharge pipe extending vertically downwardly in the main body of the cyclone. The fluid-discharge pipe has any shape of its own in cross section. This cyclone may include a fluid-discharge pipe installed in a position away from the center of main body of the cyclone and inclined against the direction of central axis of the cyclone.

Abstract: A respirator device particularly for use in association with a tube insertable into a person's trachea comprises a trachea tube having an inflatable cuff which seals the tube with the person's trachea. A line for ventilating gas extends into the tube and terminates in a jet nozzle directed to the trachea. The opposite end of the tube is provided with a connection to atmosphere which also makes it possible to provide a controlled vacuum pressure at this end particularly in the expiration phase. Control is effected between the ventilating gas and the vacuum for regulating the respiration. With the inventive method the vacuum is provided at the outer end of the trachea tube particularly during respiration and it is effected by directing a vacuum pressure gas supply connection through a Venturi connection to the tube which produces the vacuum in the tube and communicates the tube to atmosphere. This gas connection is controlled along with a ventilating pressure gas connection to provide the desired respiration.

Abstract: A process for producing a water-insoluble polymer of uniform shape having high strength and a desired geometric form is disclosed. This process comprises the steps of dissolving or partially suspending in water (a) a water-soluble salt of alginic acid, (b) a hydrophilic, crosslinkable vinyl monomer having two or more radical-polymerizable vinyl groups per molecule, and (c) optionally a hydrophilic, radical-polymerizable vinyl monomer; bringing the resulting aqueous solution or suspension into contact with an aqueous solution capable of causing gelation of the water-soluble salt of alginic acid and thereby forming an water-insoluble gel of uniform shape; and subjecting the gel to radical polymerization to produce a water-insoluble polymer.

Abstract: A projectile particularly for automatic firearms in high performance machine guns comprises a cylindrical projectile body which has an annular groove around its circumference with rib portions extending radially outwardly of the bottom of the groove which are of radial extent no greater than the outer surface of the projectile body. The groove has end walls which are substantially perpendicular to the exterior surface of the body. A plastic rotating band has its inner periphery anchored in the groove with the rib portions extending to receiving recesses or grooves of the band. The ribs are advantageously radially extending elements which have their outer ends bent in axial directions and they are arranged so that there are portions of the groove of the body on each side thereof. In accordance with the method of manufacturing a projectile body, a form tool is used to effect the recessing of the projectile body or jacket to produce the intermediate ribs which are of substantially rectangular cross section.

Abstract: The invention relates to controllably degradable polymer compositions, especially suitable for making film products, comprising a vinyl polymer, and at least one first complex which is a non-ionic organosoluble antioxidant complex of a chain-breaking, peroxide-decomposing, metal ion deactivating or ultraviolet light stabilizing compound and of a metal such that the metal complex is a photoactivator and at least one second complex which is a non-ionic organosoluble ultraviolet light stabilizing complex of a metal such that the metal complex is a photostabilizer, the concentrations of the two complexes being co-ordinated to produce a desired embrittlement time for the composition.The first complex is an iron complex and the second a nickel complex or a cobalt complex.

Abstract: High frequency welding apparatus which includes a transformer and four transistor switches. The switches and the primary winding of the transformer are connected in a self oscillating or free running bridge configuration the operation of which is load dependent. Component damage due to overload conditions is thereby prevented and the voltage rating of the components may be equal to the voltage supplied to the bridge.