Abstract: Dredging or suction of a soil suspension from the sea bottom is effected through a suction conduit connected with a suction head enclosure resting on the sea bottom, there concurrently being supplied to the suction head enclosure and through a separate conduit connected therewith a transport fluid under pressure. Transport fluid is separated from the soil suspension collected at the surface and recycled to the suction head enclosure. Thus the transport fluid flows in a substantially closed recirculating flow course and consequently pollution of the sea is lessened.

Abstract: A down-draught deflector - draught interrupter is described having a tube of circular or rectangular cross-section, an internal baffle element for laterally deflecting down-draught gases and peripheral escape openings for such gases. The tube has a substantially constant diameter and is provided in one end portion (upstream end portion) with an annular combustion gas deflector for deflecting combustion gases towards the tube axis and defines a gas flow path which at the position of its smallest cross-section has a diameter of 0.3-0.9 times the internal diameter of the tube.The baffle element occupies within the tube a position wholly or mainly downstream with respect to said position of smallest flow-path cross-section and has a dimension in a plane normal to the tube axis of 0.2-0.9 times the internal diameter of the tube. The apertures in the tube wall are located so as to be at least in part opposite the baffle element.

Abstract: A method for producing an electrostatic charge pattern on an insulating charge-receiving member comprising the steps of:1. depositing an electron-image or ion-image, resulting from the image-wise exposure to ionizing radiation of a means or medium capable of emitting photoelectrons, onto an electrically insulative layer of a multilayer screen consisting of an array of apertures and comprising at least a conductive screen layer and an adjacent insulative screen layer, said depositing resulting in the formation of an electrical double layer charge on opposite surfaces of the insulative layer, which double layer charge produces fringing fields within the apertures,2.

Abstract: A synthetic leather consisting essentially of three adherent microporous polyurethane layers, including a first base layer of a polyurethane impregnated fibrous fleece or web, a second or intermediate polyurethane layer containing 3-30% by weight of very finely divided insoluble solid particles with an individual volume is less than 2.times.10.sup..sup.-2 mm..sup.3 and with a maximum length generally below about 0.3 mm., preferably less than 0.1 mm., and a third or cover polyurethane layer which can be finished in a conventional manner. The product is especially distinguished by a smooth and uniform surface resistant to the "orange peel" effect. The method is distinguished by the application of the intermediate layer before the base layer is completely coagulated or solidified in the formation of the microporous structure.

Abstract: A perfumed material containing methyl-N-(2-methylpentylidene) anthranilate prepared by incorporating methyl-N-(2-methylpentylidene) anthranilate into mixtures usual for such purpose to impart a citrus like note thereto.

Abstract: A mold for obtaining metallic parts with an orientated crystalline struct by the directed solidification of an alloy is disclosed. The mould comprises a body of refractory mold that is a good heat conductor and on the inner wall of said body is provided a chemically protective lining of dense refractory metal oxide, with a high degree of purity, deposited on said body by blowpipe projection as a thin non-porous layer. The thickness of the metal oxide lining is in the order of a tenth of a millimeter to five tenths of a millimeter, the oxide being choosen in the group constituted by aluminium oxide, zirconium oxide, magnesium oxide and thorium dioxide with a degree of purity at least equal to 99.5 %.

Abstract: A method for preparing a mixture of finely crystallized fat, or a fat blend, and a powder, the fat being cooled in predominantly molten condition to a temperature below the gel point and in plastic form by means of extrusion being shaped into ribbons that without any further cooling at the moment of emerging from the extrusion orifices are simultaneously divided and mixed with the powder.

Abstract: This invention relates to the addition of a nitro-indazole and a polymer containing a plurality of alkylene oxide units and having a molecular weight of at least about 1500, to an aqueous lithographic developer system.

Abstract: A device for testing an endless chain-link mechanism comprises a disc, mounted to a DC-servomotor, which is resiliently urged against the rollers which serve to support the chain-link. The current of the motor is recorded in function of time and the significant part which is a measure of the resistance to rotation is determined. When this value exceeds a predetermined one, the roller is considered to be defective. Auxiliary circuits for signal processing may be provided, if desired.

Abstract: A circular knitting machine for stockings, particularly for the manufacture of stockings closed at the toe directly on the machine, having a coupling joint for disengaging the lower needle cylinder from the upper needle cylinder or from the welt dial. The coupling joint consists of a substantially flanged element rigid with the shaft driving the lower needle cylinder and of a gear wheel mounted idly and axially displaceable on the shaft. The gear wheel engages with a corresponding crown gear for rotation of the upper needle cylinder or the welt dial. The flanged element and the gear wheel have means for mutual engagement and the machine further comprises means for the axial displacement of the gear wheel to disengage it from the flanged element, these means being responsive to the machine program.

Abstract: New compounds having the formula ##EQU1## wherein R.sub.1 represents a hydrocarbon moiety having from 1 to 7 carbon toms, R.sub.2 is hydrogen, methyl or ethyl, and R.sub.3 is hydrogen, formyl or acetyl. The compounds are useful in the preparation, modification and intensification of a great variety of flavor and perfume compositions.

Abstract: A method for the preparation of electrode pitch which includes mixing a highly aromatic residual fraction from petroleum raw materials with a coal tar pitch in a weight ratio of from 1:9 to 9:1 and heating the mixture at a temperature of above 350.degree.C. until a pitch is produced with a softening point above 60.degree.C., an insolubility in anthracene oil and toluene is over 30 percent and a coking value of at least 50 corresponding to binder pitch for the production of carbon, graphite electrodes and refractory material.

Abstract: This is a method, and apparatus for practicing such method, wherein motion of an object may be detected remotely and relative speed of the object may be detected wherein a transmitter having an antenna is attached to the object and changes in the collector current, due to changes in the impedance of the antenna, resulting from changing conditions of the object such as motion and speed, are detected, remotely, so as to indicate conditions of rest, motion, and speed of the object and wherein the change of the impedance, and collector current resulting therefrom, are functions of the motion and/or speed of the object.

Abstract: Two thermoplastic strips are weld together frictionally by positioning the ends of the strips together in overlapping relation. A third strip of thermoplastic is interposed between the overlapping strips. Gripping the ends of the two overlapping strips so as to maintain them stationary while moving the third strip rapidly in a direction longitudinally of said two strips until the third strip is removed from between the two overlapping strips.

Abstract: A recording material is described, which comprises a support of paper or of synthetic polymer and an electroconductive layer on at least one side of the support. The surface resistance of this electroconductive layer is not more than 10.sup.11 ohms per sq. at a relative humidity of 15 %. The layer consists or includes a major proportion of a water-soluble polymer resulting from the amino alkylation of polyethyleneimine with an epoxy compound bearing a quaternary ammonium end group.The electroconductive layers may be used as antistatic layers in a photographic silver halide recording material. When covered with a photoconductive coating the electroconductive layer may be used in electrophotographic recording materials. When an insulating layer is applied on the electroconductive layer an electrographic recording material is formed.

Abstract: A method of recording with an electrostatic imaging device in terms of an electrostatic charge pattern, a charged particles emission pattern representing information to be recorded and generated in the interior of an envelope which contains an ionizable gas medium and comprises an insulating target towards which charged particles are projected. The envelope contains between a means producing the charged particles emission pattern and the insulatng target which is demountable or removable from the envelope a solid state device comprising a plurality of narrow passages of which the input openings are directed to or contacting the means producing the charged particles emission pattern and its windowless output-openings are directed to the insulating target.

Abstract: Hermetically sealed package for photographic sheet materials provided with one or two tearstrips which extend at the end of the package in the form of a loop. In order to facilitate the opening of the package in the dark a small part of the package is scored in the corners where the tearstrip extends, so that it can easily be torn off whereupon a sufficiently long extremity of the tearstrip is freed to open the package without difficulty.

Abstract: Improved heat stability of halogen containing polymers is obtained by applying as stabilizer a synergistic mixture ofA. An organotinstabilizer of the formula R.sub.x S.sub.n Z.sub.(4.sub.-x) andB. A second organotinstabilizer having one of the following formulae ##EQU1## where x may be 1, 2 or 3, X represents the residue of a polyol containing from 2 to 6 hydroxylgroups; Y represents oxygen or sulphur; Z represents one of the following anions: --S(CH.sub.2).sub.n COOR* where n=1 or 2, ##EQU2## --SR and >S and in addition when x=2 ##EQU3## and --S(CH.sub.2).sub.n COO--; R represents an alkyl group containing 1-18 carbon atoms, a cycloalkyl group, an aryl group, an aralkyl or alkaryl group andR* represents the groups represented by R or the residue of a polyol containing from 2 to 6 hydroxylgroups.

Abstract: A mounting bracket for supporting either end of a roller or other blind is formed in two pivotally connected parts one of which is adapted to be secured to a part of the blind mechanism and the other of which is angularly movable through 180.degree. relative to the first part and can be secured to either a horizontal or vertical surface as desired.

Abstract: A heat exchanger having a tubular core around which a helical wire coil is wound, the helix being provided with a reinforcing edge capping wire.