Abstract: A glue is disclosed which comprises a solution of at least one water-insoluble synthetic organic polymer, such as PVC or ABS, in a solvent which essentially consists of one or several compounds selected from the group consisting of 5- or 6-membered water-miscible lactones or lactams having a melting point of at the most -10.degree. C., a boiling point of at least 200.degree. C. and a flash point of at least 90.degree. C., such as N-methyl-2-pyrrolidone or .gamma.-butyrolactone. The polymer or polymers may be present in a concentration of between 0.5 and 50% by weight, in particular about 10% by weight.The glue may be used at tropical temperatures without problems arising from solvent vapours and without fire risks. The glue is particularly useful for gluing soft PVC articles to hard PVC articles without loss of the soft character of the soft PVC, and for gluing different polymers, such as PVC on polycarbonate or polycarbonate on polyacrylate.

Abstract: The invention relates to a hydrostatic power steering unit of the type having a gerotor gear set forming a metering motor and a valve unit for routing pressurized fluid from an inlet port selectively via expansible chambers of the gerotor gear set to either one of two motor ports while connecting the other one of the motor ports to an outlet port. The housing of the valve unit, which has inner and outer rotary sleeve members, is arranged adjacent the gerotor gear set. A cardan shaft which connects the outer sleeve member to the gerotor star member has a gear head connected to the adjacent end of the outer sleeve member but the shaft itself is disposed mostly in the gerotor star member. The bore of the inner sleeve member has a smaller diameter than that of the shaft head connected to the outer sleeve member and the annularly and axially extending valving grooves of the inner valve member may thus have relatively greater radial depths and thereby relatively greater capacity.

Abstract: A clean cassette for cassette tape recorders comprising a holder for a cleaning member, which holder is pivotally connected at one end with a spring-biased pivot arm. The opposite end of the spring-biased pivot arm engages a cam device which in the operative position of the cassette is engaged by one coil shaft of the tape recorder. The opposite end of the holder is intermittently engageable with a second pivot arm. The second pivot arm is influenced in the operative position by a second cam device engaged by the second coil shaft of the tape recorder. Upon actuation of the second coil shaft, an end of the second pivot arm moves the holder against the action of the spring bias of the first pivot arm.

Abstract: The invention relates to a steam heating system and particularly to a vent control unit for a radiator in a one pipe type steam heating system. The vent control unit includes a thermostatically controlled valve for modulatingly venting air from the radiator to control the entrance of steam into the radiator in accordance with the heating requirements of the room. A check valve which bypasses the thermostatically controlled valve is provided to insure the admittance of air to the radiator during certain light heating conditions when the thermostatically controlled valve may be closed during a period when air must be admitted to the radiator to facilitate proper operating conditions.

Abstract: Process for the recovery of valuable metals, particularly rare earths and similar metals, which occur in a finely distributed condition in a raw material containing calcium carbonate.The raw material with the valuable elements is subjected to vigorous heating to decompose calcium carbonate and is allowed to react with sulphur oxides, particularly SO.sub.2, so that the calcium present is converted to insoluble calcium sulphate. The valuable metals are extracted from the calcine by extraction with dilute acid or water, whereafter the valuable metals are recovered from the extract in a per se known manner.The heating and the reaction with sulphur oxides may be carried out by mixing the raw material containing the valuable elements with sulphur or a combustible sulphurous material, such as pyrite, and subjecting it to exothermic combustion.

Abstract: The invention relates to an apparatus for measuring a force wherein the force to be measured is applied to a beam in an axial direction. Oscillating forces applied transversely to the beam sets the beam in its resonant state and the resulting resonant frequency is an indication of the magnitude of the force.

Abstract: A device for gripping or locking a rope or wire comprises a pair of rope engaging members or jaw members defining a pair of oppositely arranged wire engaging surfaces forming a passageway for the rope. The jaw members are mounted in the frame of the gripping device by means of a swinging link suspension including a pair of swinging links. The jaw members are suspended so that the frictional forces acting between the rope and the jaw members cause displacement of the rope engaging surfaces thereon in mutual parallel relationship towards each other, when a pulling force is applied to the rope in a first direction, while the rope engaging surfaces are displaced away from each other, when a pulling force is applied to the rope or wire in a second opposite direction. This means that the rope is pinched between the rope engaging surfaces, when the rope is pulled in the said first direction, and released, when pulled in said second direction.

Abstract: p-Amino phenols of the formula ##STR1## wherein R.sub.1 nd R.sub.2 are independently hydrogen, optionally substituted alkyl, halogen, COOH, SO.sub.3 H or NO.sub.2, are produced by electrolytic reduction of p-phenylazophenols of the formula ##STR2## wherein R.sub.1 and R.sub.2 are as defined above, in an aqueous basic medium at a pH value at least equal to the pKa value of the p-phenylazophenol and at a temperature of at least 50.degree. C., preferably 70.degree. to 100.degree. C.The compounds (I) can hereby be produced without problems, in particular of an environmental nature, which are associated with the chemical reducing methods.The process is particularly useful for the preparation of the compound 5-aminosalicylic acid which is a valuable active component of certain medicaments for the treatment of colitis ulcerose and Crohn's disease.

Abstract: A device for injecting gas into a hot melt, particularly molten metal, is suitable for being installed in the wall, particularly the bottom wall, of the container holding the melt. The device has three main sections includinga front section of refractory material which is resistant to the melt in question, and which has a number of perforations (10) for introduction of gas into the melt,a middle section which at least partly consists of heat conductive material and possesses a number of perforations communicating with the perforations of the front section, anda rear section at least the outer (peripheral) part of which is of heat conducting material, which rear section in or close to its peripheral part has a helical duct communicating with the perforations of the middle section and adapted to pass the gas from an external gas source.

Abstract: New oxadiazolyl imidazobenzodiazepine derivatives having the formula ##STR1## wherein R.sup.3 has the formula ##STR2## wherein R" is hydrogen, C.sub.1-6 alkyl C.sub.1-6 alkoxymethyl or C.sub.3-6 - cycloalkyl;R.sup.4 is hydrogen;R.sup.5 is C.sub.1-6 alkyl or R.sup.4 and R.sup.5 together form a 2-4 membered alkylene bridge; and R.sup.A is C.sub.1-6 alkyl, C.sub.1-6 alkoxy, or C.sub.1-3 trifluoroalkyl, pharmaceutical compositions thereof, and method of treating therewith, are disclosed.The compounds and pharmaceutical compositions are useful in the amelioration, mitigation, or elimination of central nervous system disorders related to benzodiazepine receptors and especially as anticonvulsants, anxiolytics, hypnotics, and nootropics.

Abstract: The invention relates to a thermostatic type of mixer tap having hot and cold water inlets and outlets for discharging water at an intermediate temperature controlled by a thermostatic valve unit. The mixer tap has a mixing chamber to which apportioned amounts of hot and cold water are admitted by the thermostatic valve unit and outlet valve for controlling the flow from the mixing chamber to the outlet. For drinking purposes there is provided a bypass conduit which extends from the cold water inlet to the outlet valve which bypasses the mixing chamber. The outlet valve is operable to selectively connect either the mixing chamber or the bypass conduit to the outlet as desired.

Abstract: Described for use as a key ingredient in an animal control composition and more particularly in an animal repellent composition, is the genus of steroids defined according to the structure: ##STR1## wherein X completes a substituted cyclopentyl moiety and is one of the moieties: ##STR2## wherein Y represents methylene, carbinol or keto; and wherein Z completes a substituted cyclohexyl moiety and is one of the moieties:hydroxycyclohexyl;ketocyclohexyl;ketocyclohexenyl;hydroxyphenyl;cyclohexenyl; orbicyclohexyland wherein the dashed line represents a carbon-carbon single bond or a carbon-carbon double bond.Also described are animal control articles consisting of one or more members of the above mentioned steroid genus and imbedded in a compatible polymer.

Abstract: A dry particulate sulfite-containing material produced in a flue gas desulfurization process is oxidized and agglomerated in a fluidized bed reactor, wherein the material is fluidized in an oxygen-containing gas. The oxygen-containing gas which is supplied to the fluidized bed has a temperature below the agglomeration temperature of said particulate material. Due to the exothermic character of the oxidation, the temperature of the fluidized bed is maintained above the agglomeration temperature of the particulate material. Gas with entrained particles leaving the fluidzed bed are cooled during its passing through the freeboard of the fluidized bed reactor, whereby problems due to sticking of said entrained particles are avoided. At least a part of said entrained particles are recycled to the fluidized bed reactor.A fluidized bed reactor is provided suitable for performing the combined oxidation and agglomeration.

Abstract: Apparatus for recovering heat or cooling from a room space and ventilating it, consisting of heat accumulators in which the outgoing air releases its heat and from which the incoming air picks up heat or vice versa and which are alternatively connected by one end with the exhaust duct and intake duct of the room space, the direction of flow in these ducts being the same all the time under control by two flaps, and the opposite ends of the heat accumulators being connected to the fresh air intake duct and the outgoing exhaust duct, the direction of flow being the same in these latter ducts all the time under control by the two flaps. The heat accumulators consist of elements which may be added or taken off two and two, in accordance with the required capacity of the apparatus, and that the intake and exhaust ducts carried to the room spaces can correspondingly in a manner known in itself be lengthened or shortened by means of branch pieces.

Abstract: A method for production of an immobilized enzyme by means of a crosslinking agent wherein the following components are brought together in aqueous medium:(a) an enzyme preparation;(b) a crosslinking agent; and(c) an inert water soluble salt in a relatively high concentration.The salt hinders solubility of the enzyme in the medium, yet the enzyme is fully accessible to the crosslinking agent. High enzyme activity recovery may be obtained.

Abstract: A packaged enema solution or suspension consisting essentially of an effective amount of 5-ASA or a pharmaceutically acceptable salt or ester thereof, a chelating agent, an antioxidant and a buffer, the solution or suspension having a pH value of from 4 to 7 and being contained in a plastic bottle under an inert gas, the plastic bottle being packaged in a diffusion-tight light-impervious package in the same inert gas as is present in the bottle.

Abstract: A tilting mechanism for a chair seat or the like of the kind where said tilting mechanism comprises a rigid metal plate being connected to a chair support via a retaining means and where said chair seat is pivotally connected to said tilting mechanism by the aid of said retaining means, first and second flexibly resilient and coaxially arranged members e.g., rubber pads or springs, being provided for cooperation with the metal plate and the attaching frame or the like of the chair seat and both said members being provided in front of and spaced from said retaining means so that said first member is compressed when the seat is tilted backwards and that said second flexibly resilient member is compressed when the seat is tilted forwards. Said members are precompressable by the aid of an adjusting member for the adjustment of the tilting rigidity. Said tilting mechanism is provided with locking means to enable locking the seat in a forward tilted, a neutral, or a backward tilted position.

Abstract: An electrical foil heating element has a terminal box attached directly to the element. Power leads may be connected to the heating element after it has been installed through sockets in the box. The terminal box is also provided with screwless contacts or push wire connectors.

Abstract: Assembly composed of a rod (6) and a tubular sleeve body (1), such as a terminal holder for a rod-shaped insulator core, wherein one end of the rod (6) is inserted into and retained in the interior of the sleeve. The interior of the sleeve (1) comprises a guide portion (9) of a diameter essentially corresponding to the diameter of the rod (6), and a widened portion (12) arranged inside of the guide portion (9). The end portion of the rod (6) is formed with a portion (7) of reduced diameter and a portion (8) widened therefrom towards the end of the rod. A plurality of locking bodies in the form of spheres (21) are disposed in the annular space (23) formed between the widened portion (12) of the sleeve body (1) and the rod portion (7) of reduced diameter, and in a locking position these spheres bear against the inner wall of the sleeve and the outer wall of the rod (6), these spheres being kept in place by a hardened binding agent (22) filling said annular space (23).