Abstract: An improvement in a wire winding apparatus of the type which includes a means for supporting and winding a flanged spool, a wire guide arranged to traverse the wire back and forth lengthwise of the spool in use and two end sensors which are operative to automatically reverse the direction of the operation of the guide at the end of each traverse, which improvement comprises (1) means for automatically moving each end sensor away from the other end sensor by a first predetermined distance after every actuation of the first mentioned end sensor, (2) means for detecting an accumulation of the wire adjacent either end of the spool and (3) means for automatically moving the end of the sensor associated with the flange toward the other end sensor by a second predetermined distance which is greater than the aforesaid first distance when such an accumulation is detected.

Abstract: Evaporite minerals comprising mixtures of relatively coarse salts are treated in a manner such that certain of said salts are converted by recrystallization to very finely divided form and then separated from the coarse salts by size classification such as elutriation, the treatment being especially useful in a process for the recovery of potassium sulfate from marine evaporite mixtures such as kainite and halite.

Abstract: A sintered ceramic article which comprises internal electrodes and/or conductors is formed by producing a sintered ceramic body that has areas of ceramic material extending to an outer face thereof, said areas having an open structure characterized by interconnected voids, and thereafter providing a conductor in said porous areas. The ceramic body may be formed by depositing, for example by screen printing, on sheets of a powdered dielectric or insulating ceramic material bonded with a temporary bond, an area of a temporarily bonded powdered ceramic material which on firing becomes porous, i.e. open-structured, consolidating a plurality of such sheets, and sintering them. Subsequently, electrodes or conductors may be provided in the open-structured areas by impregnating said areas with a metal or alloy and providing a termination electrode on the said outer face. If desired, an open-structured permeable barrier can be provided on said outer face before such impregnation.

Abstract: A process is disclosed for the preparation of granular or pulverulent organic peroxides which are solid at temperatures ranging from -20.degree. to 55.degree.C by solidifying the peroxide in liquid form with a liquid cooling medium which at most hardly dissolves the peroxide, which is liquid at a temperature of -20.degree.C or lower, and which is gaseous at the storage temperature of the peroxide to be solidified. An example of the liquid cooling medium is liquid nitrogen and an example of the organic peroxide is diisopropylperoxydicarbonate. The present process permits the formation of granular or pulverulent solid organic peroxides without traces of liquid peroxide which can cause safety problems.

Abstract: A sliding patty griller has a frame on which are horizontally mounted a lower heated platen and an upper heated platen parallel to each other and partially overlapped in plan. A conveyor slides patties first over the lower platen, then between the two platens and finally under the upper platen. The patties are supported, when off the lower platen but still under the upper platen, on a bar grid providing drainage. The conveyor has cross bars acting as pushers and in one instance the bars are scalloped to conform to the trailing wall of each patty. Weight bars over the initial portion of the lower platen hold the patties thereon in close contact therewith.

Abstract: Carbonization of coal in travelling grate furnace with hot gas inlets below the grate. A refractory screen is provided above the grate to provide a flame propagation base for the volatile gases withdrawn from the coal on the grate. The combustion zone above the refractory screen provides radiant heat to vaporize volatiles present in the coal on the grate.The coal to be treated may be in the form of briquettes or an extruded slab. When an extruded slab of slurried coal is used the thermal shock on first entering the carbonization chamber results in the formation of carbon granules.

Abstract: New azetidine derivatives of the formula: ##EQU1## wherein R.sub.1 represents a penicillin- or cephalosporin-amido group, R.sub.2 represents one of the groups of the following formulae: ##EQU2## wherein R.sub.4, R.sub.5 and R.sub.6 are the same or different and each represents a hydrogen atom or a lower alkyl or alkenyl group, n represents 2 or 3 and - in case formula IIB represents a phenyl group - this group may carry one to four further substituents selected from the group consisting of halogen atoms and lower alkyl, lower alkenyl and phenyl groups, R.sub.3 represents an amino group of the formula ##EQU3## wherein R.sub.7 represents a hydrogen atom or a lower alkyl group and R.sub.8 represents a lower alkyl group, or R.sub.3 represents a N,N'-disubstituted hydrazino group wherein the substituents are lower alkyl groups, e.g. the N,N'-diisopropylhydrazino group, or R.sub.3 represents the group -OR.sub.9, wherein R.sub.

Abstract: Drum for washer-extractor machines comprising: two end plates; connecting means between these plates; and a shell consisting of a series of panels hinged with their longitudinal sides one to another, the first panel of the series being anchored to a component of said connecting means and the last panel being fitted with locking means cooperating with said component of said connecting means.

Abstract: In a process for reacting an aromatic or hydroaromatic alicyclic or heterocyclic dicarboxylic acid or its anhydride with an aliphatic or aromatic alicyclic or heterocyclic mono- or di-amine to produce an N-substituted dicarboxylic acid imide with a splitting off of water, the improvement of carrying out the reaction in a liquid solvent mixture consisting essentially of a non-polar organic solvent and a strongly polar organic solvent which together form a ternary azeotrope with water at reaction temperatures between about 40.degree.C. and 160.degree.C. The imide products are generally known for use as intermediates and final products in a number of industries.

Abstract: Novel yellow forming color couplers for use in silver halide color photography are described which correspond to the formula:R--COCHXCONH--Ar--SO.sub.2 OYwherein R represents alkyl or phenyl, X represents hydrogen or a displaceable group; Ar represents phenylene and Y represents a carbocyclic aryl group.

Abstract: Ore pellets are delivered by a conveyor to the chain grate of a continuously operating baking plant, said pellets being supplied to the conveyor from a pellet former at a fluctuating rate independent of the speed of the conveyor. To afford as nearly constant a flow of the pellets to the baking plant as possible, the quantity of pellets about to be delivered by the conveyor at the delivery station is measured, more particularly by measuring the speed of the conveyor and weighing the conveyor load near said delivery station, and is represented by a first signal which is passed through a high-permeable filter and a proportional control means, to provide a second signal which is combined with a signal representative of a belt speed calculated for an average load, and applied to adjust the belt speed in the direction to maintain said flow as nearly constant as possible.

Abstract: A connection between the end of a cylindrical pipe inserted into a hole in a plate for connection there with, the connection being fluid-tight and capable of resisting a torsional couple; the connection is effected by first expanding the pipe-end with respect to the original pipe profile and by shaping the cross-section of the outer circumference of the expanded pipe-end and the inner wall of the hole in the plate such that the projection of the zone of contact upon a plane perpendicular to the axis of the pipe differs from a pure circular form.

Abstract: The back-up wrench comprises a stationary jaw having an angular gripping wall adapted to grip two adjacent sides of different size connectors, and a rotatable jaw having a concave wall adapted to grip limited portions of two symmetrically-opposite sides of the connectors. The rotatable jaw is pivotally mounted on a cylindrical bearing surface provided by a forward extension of a plate whose rearward end is pivotally mounted on a stationary handle forming integral part with the stationary jaw. A rotatable handle is pivotally coupled to the plate. Conventional means are provided in and between the handles for applying and releasing the gripping action of the jaws against the four sides of the connector.

Abstract: This invention provides for an analytical apparatus for serial determination of nitrogen in samples by the Kjeldahl method, characterized in that it comprises from 4 to 7 flasks suspended vertically in a rotatable roundabout, each provided with a cover and a side tube extending into a common central container for the collection of combustion products, the roundabout being connected to a device which at regular intervals turns the roundabout one step forward to the next position, means for heating the flasks in one or two of the positions, means for blowing cooling air against the flasks, means for feeding diluent water to the flasks in a following position, means for introducing neutralising chemicals, means for generating and feeding steam to the flasks in the next following position, means for collecting and titrating the distillate, blowing means for emptying the flasks in the last position, and means for opening the covers on completion of the decomposition and for introducing diluent water into the flask

Abstract: A developing material for use in the development of electrostatic images comprising toner particles and carrier particles is described wherein the developing material incorporates at least one solid hydrophobic bivalent or trivalent metal salt of a half-ester of a branched-chain or straight-chain aliphatic dicarboxylic acid and/or at least one bivalent or trivalent metal salt of a monoester or diester of a phosphorus oxyacid. The images obtained by means of this developing material have an improved image contrast, solid area coverage and surface smoothness. The toner particles show less tendency to cake and agglomerate and have improved mechanical strength. Cleaning of the imaging surface between use and re-use is also facilitated.

Abstract: A radiographic film cassette suited for being used in combination with a daylight unloading system is presented. It comprises a cover and a bottom frame which are hingedly connected to each other in such a way that not only a rotation at the hinges occurs, but also a lifting up of the cover near the hinges. In this way the sheet of X-ray material becomes completely free. Further, two deformable pins are provided in the bottom part in order to permit the air to flow under the sheet, avoiding thereby a sticking of the latter to the screens. The cassette is advantageously used with a simple unloading device, placed in front of the entrance slit of a processing machine; the unloading device itself may be supplementarily equipped with means to print identification data on the sheet of X-ray material.

Abstract: A thermographic recording process in which a dye is produced by bringing image-wise into reactive contact with the aid of heat a dye precursor compound and a compound with acid reaction corresponding to the following general formula: ##EQU1## wherein : Z represents the necessary atoms to close an unsubstituted benzene nucleus, a halogen-substituted benzene nucleus or a nitro-substituted benzene nucleus, andR represents an unsubstituted aliphatic group containing at least 4 carbon atoms, a cycloaliphatic group or an aliphatic group substituted with hydroxyl, with an etherified hydroxyl group or with an acyloxy grup.

Abstract: The pharmaceutical composition has a dipeptide or a pharmaceutically-acceptable salt thereof as an active ingredient. The depeptide has the general formula ##EQU1## wherein R.sub.1 and R.sub.2 are the same or different and each is either phenyl or indolyl. administration composition may be in a solid form for oral administraion in which case the active ingredient is surrounded by an enteric coating. The composition may also be in a liquid form for administration by injection in which case the active ingredient is dissolved in a physiologically compatible sterile liquid. The composition is useful in the treatment of inflammation in mammals and may be administered daily in an amount of about 40mg of the dipeptide or salt per kilogram weight of the mammal.

Abstract: A spreader for liquid or solid farmyard manure. The spreader comprises a manure container, an unloading rotor and a manure pusher. The rotor is spaced above the level of the bottom of the container and discharges over the rear wall of the container. The pusher keeps the rotor immersed in manure to the correct depth. In this way both solid and liquid manure can be spread. The rear wall of the container slopes up to the rotor to guide solid manure to the rotor.

Abstract: Direct-positive silver halide emulsions are described which have been fogged so that a test portion thereof when coated at a coverage of 0.50 to 5.50 g of silver per sq.m. gives a density below 0.50 upon processing without exposure for 6 min. at 20.degree.C in a developer I and an identical coated test portion gives a density that is at least twice that of the first test portion with a minimum of 0.50 upon processing without exposure for 3 min. at 20.degree.C in a developer II.The emulsions have high photographic speed and though fogged to a very low degree can yield direct-positive images of satisfactory density.