Abstract: An individual wheel suspension is disclosed for a non-steered wheel of a motor vehicle such as an automobile which undergoes a change in camber by spring travel. The individual wheel suspension comprises a trailing arm which is articulated in the direction transverse to the lengthwise axis of the vehicle by at least one wishbone and connected in the lengthwise direction of the vehicle to the vehicle body via a lengthwise arm with a swivel bearing having a swivel axis which lies essentially in the direction transverse to the lengthwise axis of the vehicle, and an auxiliary device which engages the lengthwise arm at a distance from the swivel axis and by means of which the lengthwise arm is pivoted in the direction transverse the lengthwise axis of the vehicle along the swivel axis as the wheel goes up and down.

Abstract: An independent suspension for steered wheels of motor vehicles in which the wheel carrier that serves for the guidance of the wheel during spring and steering movements is connected with the vehicle superstructure in its lower area by means of a cross guide member and in its upper area by way of two individual guide members for achieving an ideal steering axis; the symmetry line with respect to the two upper guide members thereby subtends in the straight driving position of the wheel--as viewed in plan view--an acute angle to the wheel axis and is located to the rear of the wheel axis as viewed in the driving direction.

Abstract: In accordance with the teachings of the present invention an internal combustion engine comprising at least a combustion chamber, a piston, a turbulence chamber provided inside the overhead cylinder above the piston, and an ignition device leading to the turbulence chamber is provided. The invention is characterized in that at least one channel provided at the base of the overhead cylinder, opens tangentially along the walls of the turbulence chamber. The channel has, at its origin, a width substantially equal to the diameter of the seat of the intake valve and narrows as it goes deeper in the direction of the turbulence chamber. This engine embodies an improvement of the Otto type engines.

Abstract: A process for preparing 11.beta.,21-dihydroxy-2'-methyl-5'.beta.H-1,4-pregnadieno(16,17-d)-oxazole -3,20-dione, comprises fermenting 11.beta.,21-dihydroxy-2'-methyl-5'.beta.H-4-pregneno (16,17-d)-oxazole-3,20-dione with a living culture of Arthrobacter simplex.

Abstract: A ceramic burner includes a fuel gas supply conduit having a gas delivery region opening into a mouth portion and a mixing and aspiration region communicating with the gas delivery region, and an air supply conduit having nozzles opening into the mixing and aspiration region of the fuel gas supply conduit. The mixing and aspiration region has an angular configuration including a first segment inclined with respect to the axis of a combustion chamber of an air heater within which the burner is positioned and a second segment inclined with respect to the first segment and in communication therewith at a position of directional change. The gas delivery region extends coaxially with respect to the combustion chamber.

Abstract: A gate valve includes a water cooled valve casing coaxially attachable to a conduit and a valve plate mounted in the valve casing for sliding movement relative thereto between open and closed positions of the conduit. The valve casing includes a pair of annular mounting flanges adapted to be connected to the conduit and a pair of annular U-shaped sealing rings. Each sealing ring is positioned radially inwardly of a respective mounting flange, and the sealing rings are positioned on opposite axial sides of the valve plate. Each sealing ring includes a web portion, an inner leg portion extending generally radially outwardly from the web portion and forming a sealing surface for the valve plate, and an outer leg extending generally radially outwardly from the web portion. Each outer leg is connected to a respective mounting flange. The valve casing defines therein an enclosed interior space through which cooling water is adapted to flow.

Abstract: Method for the use of flue gas desulfurizing gypsum occurring in flue gas desulfurizing installations operated on a lime basis, characterized by mixing the flue gas desulfurizing gypsum with dehydrated natural gypsum after its partial or complete dehydration.

Abstract: A freewheel clutch includes a ladder-like guide band, and a cage for receiving and retaining a group of wedging gripping members in an annular space between a pair of concentric races, preferably the cage is formed from a flexible flat strip having windows defined therein including supports and resilient biasing lugs formed by the edges of the windows and having radially extending supports all unitary with the strip, opposite end windows being over-lappable and interlockable with each other to form an annular cage, the guide band may be formed of a rubber-like material or a combination of a molded material and wire, or by a continuously coiled wire defining a group of adjacent coils alternately joined by their ends forming spacers for the gripper elements.

Abstract: Apparatus for drying products of various types including particulate materials having varying degrees of moisture content including those moistened throughout, as by organic solvents, and which may be tacky in nature; the apparatus including a generally cylindrical vessel with a downwardly conical lower portion terminating in a dried product discharge opening, and a gas inlet conduit arranged to deliver a drying gas to the vessel in the region of and slightly above the discharge opening at relatively low pressure but with auxiliary screw or propeller arrangements for preventing access of the product, particularly if tacky, to the gas inlet conduit and also serving to assist in distribution of the drying gas throughout the product as it is agitated and distributed in the vessel and in countercurrent as it tends toward the discharge opening.

Abstract: A process for the simultaneous production of fructose and of gluconic acid from glucose-fructose mixtures and/or from invert sugar by the selective oxidation of the glucose proportion, wherein oxygen and/or air, activated by noble metal catalysts, are utilized as the oxidizing agents; the oxidation is conducted in a pH range of about 8 to 10; and the oxidation is terminated after the formation of 1 equivalent of carboxylic acid per mole of glucose employed.The thus-obtained gluconic acid can subsequently be separated from the unchanged fructose in a simple way and practically quantitatively, and can be isolated as the salt.

Abstract: In a process for preparing 21-hydroxy-20-methylpregnane derivatives by fermenting a zoosterol or a phytosterol with a culture of Mycobacterium spec. NRRL B-3683 or NRRL B-3805 or a variant or mutant thereof,an improvement comprises conducting the fermentation at a pH value of 6.0-8.0 in the presence of an amount of borate ions or an organic boron compound effective to increase the yield of the 21-hydroxy-20-methylpregnane derivatives produced.

Abstract: Sterol derivatives of the formula ##STR1## wherein R.sub.1 is a hydrogen atom and R.sub.2 is lower alkoxy, or R.sub.1 and R.sub.2 collectively are lower alkylenedioxy and R.sub.3 is a sterol hydrocarbon side chain are converted to the corresponding androsten-17-ones by the oxidative degradation activity of a species of microorganism which degrades sterol side chains, preferably of the genus Mycobacterium. The ether group of those compounds wherein R.sub.1 is a hydrogen atom and R.sub.2 is lower alkoxy, and the corresponding 17.beta.-hydroxy and 17.alpha.-hydrocarbon-17.beta.-hydroxy compounds is cleaved by reaction with an alkanoic acid chloride or anhydride in the presence of a Lewis acid.

Abstract: A plurality of regenerative hot blast stoves are operated under a staggered-parallel process wherein each stove is alternately operated under a fixed heating cycle wherein no cold blast is supplied to the stove and no hot blast issues therefrom and a fixed blasting cycle wherein cold blast is supplied to the stove and issues therefrom as hot blast. The initiation of the cycles of the stoves is staggered in time with respect to each other such that at any given time hot blast issues from more than one of the stoves but at different temperatures.

Abstract: In order to provide a more accurate representation of aircraft pitch attitude for use in aircraft head up display devices, a circuit for generating a computed pitch signal responds to a longitudinal accelerometer and a vertical gyroscope within the aircraft wherein the computed pitch signal is generated by adding to the gyro pitch signal a correction factor computed by subtracting the value of the computed pitch signal from an inertial pitch signal derived from the longitudinal accelerometer. In order to compensate for the effects of aircraft acceleration on the longitudinal accelerometer signal, a computed acceleration signal derived from the difference between the longitudinal accelerometer signal and the gyro pitch signal is subtracted from the longitudinal accelerometer to generate the inertial pitch signal.

Abstract: An aircraft instrument with a reflective screen on which the pilot views a collimated head up display of flight guidance information against a background of the outside world, for low altitude maneuvers. The guidance information includes a pitch stabilized reference indicia and a flight path indicia. The pitch reference and flight path indicia are positioned on the screen in accordance with aircraft operating parameters and pilot inputs to provide for a flare maneuver to touchdown or to direct the pilot in a path parallel with the surface of the ground, as for ejecting cargo.

Abstract: An improved process for isolating 3-hydroxy steroids and 3-keto steroids from mixtures thereof with lipids by dissolving the mixtures in an organic solvent, mixing the dissolved mixture with a metal salt to form insoluble adducts of the steroids, separating the insoluble adducts and splitting the adducts to regenerate the free steroids, which comprises using methyl isobutyl ketone and/or methyl n-amyl ketone as the solvent and calcium bromide as the metal salt.

Abstract: A housing, connectable to a pipe, has therein an opening, a chamber, a stationary sealing seat, and a movable sealing seat displaceable toward and away from the stationary sealing seat. A slide plate is movable from an open position, exterior of the housing, through the opening to a closed position between the sealing seats to block the pipe. A closing element closes the opening and seals the chamber when the slide plate is in the open position.

Abstract: In a blast preheater for a blast furnace, a control housing has at least one open ended cylinder vertically mounted therein. The cylinder, or each of several cylinders has several axially spaced rows of circumferentially spaced slots, extending through the wall of the cylinder. A slider is slidable in the cylinder for opening, restricting or closing such slots. Wall means are mounted in the housing and are so arranged that in each position of the slider, a first part of the housing surrounding at least one of said rows of slots is separated by the wall means from at least one other part of the housing which communicates with the interior of the cylinder.

Abstract: Alkali percarbonates are prepared from aqueous alkali carbonate and hydrogen peroxide solution in the presence of polymeric carboxylates, especially those that contain in addition to carboxylate or carboxylic groups hydroxyl groups and if desired carbonyl groups and which have an average degree of polymerization of 5 to 5000.

Abstract: A shutoff and control slide includes a cylinder having at least one row of circumferentially spaced elongated openings, and a sliding sleeve mounted for axial displacement in the cylinder. Rings are sealed to the inner surface of the cylinder on opposite axial sides of each row of openings, and each ring has an axially facing abutment surface. Abutment members, each having an axially facing abutment surface, extend outwardly from the sliding sleeve. Sealing members are provided on at least one of the ring and abutment member abutment surfaces.