Abstract: An electro-analytical measuring process and apparatus for the determination of the concentration and the ion-activity of stationary or flowing solutions or of the partial pressure of gases. The measuring cell of the measuring equipment--connected to an electronic signal processor--comprises, in addition to one or several sensing elements and reference electrodes, at least one fluid clutch capable of galvanically short-circuiting one or more parts of the measuring chain. The measuring cell of the measuring equipment comprises, in a given case, integral sensing unit and standardizing media, being in contact with sensing elements. Further, a control unit for programming short-circuiting belongs to the measuring cell, a fault compensating unit producing signals is connected to the control unit--for calculating the value of the parameter to be measured--is connected to the output of the fault compensating unit.

Abstract: A process and apparatus for recovering the heat content of oil-contaminated waste water wherein the waste water is collected and is conducted through a plurality of waste water carrying ducts with shut-off valves, from an oil manipulating system into a single duct with a shut-off valve; a duct with two branches attached to and leading from said shut-off valve; each branch of said branched duct having therein a magnet valve which operates contrarily to the magnet valve in the other branch; each of said magnet valves connected by means of a cable to an instrument which senses the oil content of the waste water, wherein if the instrument does not sense oil, one magnet valve is open and the other is closed, and if the instrument senses oil, the other magnet valve is open and the one magnet valve is closed; a pressurized sample collector connected via a duct to the one magnet valve intermediate said valve and said sensing instrument; said pressurized collector having therein a sampling place on a float connected b

Abstract: The invention concerns a light-structure building and a supporting frame system therefor, which can be used equally for flat or slightly inclined roofs and is built up of a single C-section support or multiples of such support. Both the supports and their supporting elements are provided with rows of holes and thus work on site consists only of making bolted connections.The beam network of the building is constituted by main supports and auxiliary supports disposed along an orthogonal network the members of which are C-section solid supports or built-up supports obtained by doubling the solid supports in a side-by-side relationship or single-chord Vierendeel girders formed by doubling the solid supports in a superposed relationship or in given cases, divided chord Vierendeel type girders obtained by combining the latter.

Abstract: A display carton formed from a single blank of paperboard or the like having an outer carton structure and an inner product compartment. The outer carton structure has spaced outer front and rear walls separated from each other by a pair of outer carton side walls and said inner compartment comprises a pair of inner side wall panels and a rear panel. The inner compartment is secured to said outer carbon structure so that rear inner compartment panel is not secured to said rear outer carton wall and the inner compartment side panels are not secured to said outer carton side walls so that when the carton is squared and erected said inner compartment may be erected independently of the squaring of said outer carton by snapping said inner compartment into its erected position. A self-centering beam is also provided to insure the automatic centering of the inner compartment.

Abstract: An improved optical system for the light point on an illuminated signal or display device having one or more light points. The system comprises one or more light deflectors optically coupled with the light source of the light point and focussing the light passing through the effective aperture of the deflectors towards a focal point or line, respectively, and one or more light shields arranged in the light path and provided with an aperture in the focal point or line whereas a plurality of the deflectors with the corresponding light shields may be arranged in the rows and columns of a display board. The mantle of the light shield frames a hollow in a manner that its mouth is facing the light deflectors and the mantle is under a bevel narrowing towards the aperture of the light shield and the mantle is arranged parallel to and encircling rays departing from the periphery of the effective aperture of the light deflectors and converging into the focal point or line.

Abstract: A device and process for examining the size of particles suspended in a liquid, in particular for determining the MCV of red blood cells, having a measurement aperture traversed by the suspension and two electrodes arranged in the region of the measurement aperture and connected to evaluation circuitry, each of which electrodes producing one pulse per particle passing therethrough, the amplitude of which pulse is a measure of the volume of the particle. A differential discriminator for the pulse amplitudes and a further discriminator are connected in front of the evaluation circuitry wherein the further discriminator permits the passage of only pulses whose duration is less than the duration of a pulse coming from a single particle which has a maximum amplitude determined by the differential discriminator.

Abstract: The invention relates to a method for utilizing silicon tetrachloride formed as a by-product of the chlorination of aluminium- and silicon-containing minerals. More particularly, the invention relates to a process for the preparation of aluminium trichloride and silicon dioxide by chlorination of alumina with silicon tetrachloride. According to the invention alumina or a material essentially consisting of alumina is reacted with silicon tetrachloride as a single chlorinating agent at a temperature exceeding 400.degree. C., unreacted silicon tetrachloride is separated from the aluminium trichloride formed and is recycled into the chlorination step, silicon dioxide is isolated from the solid residue essentially consisting of the unreacted alumina and silicon dioxide, unreacted alumina is recycled into the chlorination step and aluminium trichlorine obtained is continuously eliminated.

Abstract: A self-advancing support apparatus for protecting mine gate crossings, and optionally for engaging the reversing/driving head of a longwall and/or gate conveyor. The support apparatus has at least two side by side desired construction but expediently of a construction identical with that of the support unit at the longwall face to which said unit is connected via a coupling element. Each unit includes a base, a canopy, and connected between them, expediently by articulation, bracing elements as well as advancing elements and holding devices mounted on the base, and if so desired, for advancing the reversing/driving head of the longwall conveyor, a guide track extending in the direction of the gate conveyor, and an actuating/controlling unit. A holding mechanism is provided for engaging the reversing/driving head of the longwall conveyor and has at least two degrees of freedom of movement.

Abstract: A process for waving or straightening hair in which an anionic surfactant is added to the hair reducing solution and the hair is treated either during a prewetting step or during neutralization, or both with a cationic polymer product which forms a substantially water insoluble complex with the anionic surfactant in the presence of hair.

Abstract: The invention concerns a shiftable element logical puzzle in the form of a cylindrical body comprised of an assembly of sector shaped cylinder forming elements, said elements forming two identical cylinder halves in the form of upper and lower tiers of six elements each, three of said elements in each tier being identical to each other, but different from the remaining elements, and means joining said elements together to form said cylindrical body and enabling various groupigs of six elements, three from each tier, to rotate relative to the remaining three identical elements about three axes passing through the cylinder body axis but perpendicular thereto.

Abstract: A reversible child resistant closure having a child resistant and a non-child resistant mode of use. The closure is characterized by its low profile and tab that extends outwardly from the closure; this tab being engageable from below when closure is rotated into the appropriate position on the container. An upwardly extending relatively low annular rib is provided on the roof of the closure which serves as the means by which the closure is engaged by the container neck when the closure is inserted into the container neck in its non-child resistant mode.

Abstract: Disclosed are silicon-containing nitro dyes for dying organic polymers or organosiloxanes, which are reactive dyes for synthetic or natural fibers of vegetable or animal origin, having the formula: ##STR1## wherein the chromophore component is bonded with the Si-atom by homopolar bonds and wherein X represents the same or different hydrolyzable groups or a siloxane radical, Z is a bivalent alkylene radical with 1-10 carbon atoms which may be interrupted by NR' groups, R is a monovalent organic radical, R' is hydrogen, alkyl with 1-10 carbon atoms, aryl, aralkyl or said substituted radicals, Ar is a substituted or unsubstituted aryl radical, and a and b are integers from 1-3, and a process for making said dyes. Said dyes may be built into a large number of organic and inorganic molecules and color the same without fixation.

Abstract: A composition for lightening or coloring hair comprising a liquid vehicle, an oxidizing agent and at least one di-long chain aliphatic hydrocarbon quaternary amine compound and a method for lightening or coloring hair using this composition.

Abstract: Disclosed are silicon-containing nitro dyes of the formula: ##STR1## wherein the coloring component is bonded with a Si-atom by homopolar bonds and whereinX represents same or different hydrolyzable groups or a silicone radical;Z is a bivalent alkylene radical with 2 to 10 C-atoms, which may be interrupted by oxygen and may also contain cyclic radicals, and wherein .sup.1 C and .sup.2 C may be parts of a cycloalkyl ring;R is a monovalent organic radical;Ar is a substituted or unsubstituted aryl radical;a and b are integers from 1-3;and a process for making said dyes. Said dyes may be built into the polymer molecules or affixed to fibers without additional fixation.

Abstract: In an anti-jackknifing apparatus for an articulated motor vehicle having a device filled with a pressure medium, the volume of which varies according to the magnitude of the jackknifing angle. The device has two movable opposite walls, each connected to one of the vehicle units. The device comprises an air spring connected to a working medium supply source.

Abstract: An analgesic and sleep-aid composition containing an analgesic (e.g. aspirin, APAP or combinations thereof) and diphenhydramine dihydrogencitrate. Discloses several dosage forms including a two layer tablet in which aspirin is contained in one layer and APAP contained in the other layer; the preferred form being such that the diphenhydramine dihydrogencitrate is contained in the APAP layer.

Abstract: There is disclosed a process for the extraction of thick coal seams by means of which coal seams not extractable in one bank or slice and/or located at peripheral areas may also be extracted under improved mine safety conditions and with high productivity.According to the invention the thick coal seam is if required, divided horizontally and/or vertically into extraction blocks which are bounded and separated by stowing pillars arranged according to the direction of advance of the extraction. The cavity of the pillars is advanced at a level higher than the level of the roof of the extraction space, after which the cavity of the pillar is back-filled. Then the block is extracted by means of block caving in a manner known per se. In a preferred embodiment of the invention incombustible material that agglomerates under the effect of the static pressure of the rock is used for stowing.The utilization of the process for extraction according to the invention results in a considerable increase of intensity.

Abstract: There is disclosed an hydraulic drilling motor for well drilling. The motor is of the push-down axial flow type. It is of vibration-free rotary chamber-type construction functioning with high torque wherein the r.p.m. and capacity of the drilling tool are in proportion with the velocity and pressure of the flowing medium. The motor consists of an internally threaded chamber with an arch parallel with the flow direction of an externally threaded spindle of z.sub.o =z.sub.k (arch or thread)+1, or z.sub.o =z.sub.k -1 thread, of identical course with the chamber, arranged in the chamber. The cross section of the spindle or chamber is prolate, peaked or curate cycloid. When the spindle is cycloid cross sectional, the cross section of the chamber is in the same plane, and when the chamber is in cycloid cross sectional the cross section of the spindle is in the same plane. This is limited by the external or internal envelope curve of the surface touched by the cycloid during relative motion.