Abstract: The invention relates to a process for deacidifying a coffee extract without the introduction of foreign products by selective absorption with a natural material, chitosan. In this process, the extract is contacted with chitosan in divided form and the deacidified extract is collected after separation from the chitosan. Preferably the coffee extract is contacted with chitosan for 5 to 30 minutes at a temperature from 10.degree. to 80.degree. C. and in ratios (extract/chitosan) of from 15 to 400 ml per gram. The chitosan may either be suspended in the coffee extract, or the coffee extract may be percolated through a column filled with chitosan.

Abstract: Method and apparatus for removing heavy metals as sulfides from aqueous liquids. The aqueous liquid is introduced into a circulating liquid loop wherein there are established a mixing zone, a controlled precipitation initiating zone, a crystal growing zone and a crystal settling zone. The aqueous feed liquid containing H.sub.2 S dissolved therein and at a pH below that at which the sulfide is precipitated is mixed in the loop with a pH-adjusting liquid; and the degree of supersaturation with respect to the metal sulfide is maintained within the controlled precipitation initiating and crystal growing zones in the metastable condition so that the growth rate of the metal sulfide crystals remains greater than under uncontrolled conditions vis-a-vis the nucleation rate to effect the production of metal sulfide crystals of a character which makes it possible to separate them through clarification and filtration.

Abstract: Primary extraction of ground roasted coffee. The coffee is first extracted with an amount of aqueous extraction liquid sufficient to extract substantially all of the dry soluble solids from the coffee, but preferably not so large that the extract must be concentrated for further processing. The coffee is next extracted with an aqueous extraction liquid to extract hydrophobic flavor components. The hydrophobic flavor components are removed from the resulting extract by stripping and recovered as a concentrated aqueous solution.

Abstract: A rotor for jet engines includes a drum formed by disks and carrying blad Between the blades of two adjacent stages, braces are interspaced, the braces being projections which engage in sockets provided for this purpose on the disks. Each disk has two series of sockets, one receiving the roots of the blades, and the other, interspaced between the preceding, the projections of the braces. The blades are immobilized in translation at the upstream end by one ring and downstream by another ring, against which the roots of the blades of the terminal stages abut. The invention is particularly applicable to the building of axial type compressor rotors having several stages.

Abstract: A heat exchanger comprises an outer chamber having an inlet and outlet for passing a flow of air through the outer chamber. An inner chamber is disposed within the outer chamber and has a second inlet and a second outlet for passing a flow of gas through the inner chamber. Heat exchange tubes are arranged in the inner chamber whereby the flow of gas contacts the outer surface of the tubes. A baffle device is disposed between the inner and outer chamber for directing the flow of air from the inlet, through a first section having heat exchange tubes, into the outer chamber and back into a second section having heat exchange tubes, so that air passes through the heat exchange tubes in the first and second sections.

Abstract: A machine for measuring the dimensions of a workpiece, comprising a base te for receiving the workpiece and a mechanical structure carrying a feeler for movement along three orthogonal axes at right angles by means providing for direct measuring of the amounts of movement of the feeler along the axes. Optical deviation measurement means determine the errors due to deformation of the components, lost motion as well as pitch, yaw and/or roll of the movable components. The corrections to be applied to the data delivered by the measuring means are computed and may be made automatically for the display to be free of errors.

Abstract: A multiple coil electromagnetic pickup converts into signals the flux varions produced by the passing of the teeth of a sound wheel. The pickup comprises at least two assemblies each consisting of at least one coil, one pole piece and one straight magnet all axially aligned, the assemblies being arranged in parallel to each other and magnetically insulated from each other by a screen. Measurement of rotational speed produces two output signals.

Abstract: A lithographic printing plate in which the oleophilic imaging areas are formed as a thin cross-linked block copolymer film adhered to the hydrophilic surface of a backing plate. The block copolymer comprises blocks of copolyacrylate and polyurethane wherein the copolyacrylate blocks are a copolymer of a hydroxy-containing acrylate and a second acrylate component comprising one or more esters of acrylic acid or methacrylic acid or mixtures thereof and the polyurethane blocks are formed of polyoxybutylene as the prepolymer component. In forming the printing plate the block copolymer is deposited as a thin film containing an ultraviolet initiator and a cross linking promoter and the cross-linked imaging areas are formed by exposure to ultraviolet radiation.

Abstract: A method of forming glass bottles from a short parison is disclosed, which method includes the steps of mechanically elongating the parison in a blow mold to an extent that the exterior bottom of the elongated parison is near, but not at, the bottom of the blow mold cavity and subsequently expanding the elongated parison by vacuum on its exterior and/or by air pressure on its interior, and finally removing the blown bottle from the blow mold.

Abstract: An electronic watch movement is formed from a flexible substrate which is enabled to fit the relief of the watch movement frame by openings formed therein. A conductive metal coating is affixed on the substrate covering the openings, and portions of the coating are removed to form an electric conductor grid with some coating sections left over some openings. The coating support the substrate between the openings and mount the substrate in the frame by bending so that the coating supports sections to conform to the frame relief.

Abstract: The invention concerns a method of obtaining manganese alloys with an average carbon content by reacting liquid, carbon-containing ferro-manganese in a fluid tight chamber. Oxygen, mixed with a heat regulating gas such as CO.sub.2, air, nitrogen, argon or steam, is introduced and by controlling the discharge of the gaseous effluent, the pressure in the reactor is adjusted between 1.5 and 15 bars, to avoid volatilization of the manganese and a refined ferro-manganese is produced containing 0.5-2% carbon.

Abstract: The present invention relates to bis(4-demethoxydaunorubicin)dihydrazone of the formula ##STR1## wherein R.sub.1 and R.sub.2 represent hydrogen or alkyl having from 1 to 4 carbon atoms and X represents(a) alkylene having from 3 to 20 carbon atoms and optionally substituted by one or more hydroxy and/or primary amino groups, or(b) alkylene optionally interrupted by one or more secondary amino groups, the total number of carbon and nitrogen atoms in the resultant chain being 3 to 20and to pharmacologically acceptable salts thereof which are potent inhibitors of neoplastic disease and are also useful as antiviral agents.

Abstract: An improvement in movable blast pipes for jet engines, including a fixed element joined to the engine, at the end of which fluid is ejected into a movable element pivotably mounted at the rear of the fixed element following an axis perpendicular to the longitudinal axis of said fixed element. On each side of the pivoting axis are arranged two pairs of guidance, two-way screw jacks whose bodies are mounted and joined to the movable element and include a sliding shaft joined with the middle portion of levers in turn joined at one of their ends to the movable element upstream from the junction point of the screw jacks, with the other end of the levers being joined to one end of rods whose other ends, in turn, are joined with the fixed element.

Abstract: The invention relates to missile guidance and provides a method and system for guiding one or more missiles on to one or more targets. Aim on the targets and missiles is taken by means of two electro-optical pick-ups having a switchable field of view and supported on a stabilized and orientable platform. The pick-ups provide images displayed on screens and the corresponding video signals are processed by deviation measuring circuits which form tracking windows around the image of the targets and the missiles and determine their coordinates, the latter being addressed to a computing unit which generates guidance and steering commands transmitted to the missiles.Application to the automatic guidance of missiles fired as a salvo from an anti-tank helicopter.

Abstract: Method of liquefying a mixture of gas rich in methane by performing an auxiliary cycle and a main cycle in which are used an auxiliary and a main refrigerating fluid of several components. In each cycle are performed the compression, cooling, liquefying and sub-cooling of the refrigerating fluids in counter-flowing relationship with themselves after expansion-vaporization in a heat exchanger. The gas to be liquefied is cooled in parallel with said main refrigerating fluid which has been pre-cooled in the auxiliary cycle. Pre-cooling of said gas is performed in an exchanger cooled by the refrigerating main fluid after its expansion-vaporization in said heat exchanging column of said main cycle and before its re-compression.

Abstract: Apparatus is provided for handling signature bundles. The apparatus is particularly designed to place one signature bundle in end-to-end relationship with another. The apparatus includes a clamping plate at one end of a frame and a pair of pivotal arms at the other end of the frame which can engage and disengage a signature at the end of the bundle without damaging it. This enables a new signature bundle to be stacked on another one at feeding equipment which separates and collates the bundles with other bundles, by way of example.

Abstract: A glow plug driver adapted to be coupled to a power supply and a glow plug comprising first and second conductive leads for coupling the glow plug to the power supply and an electronic switch in the first lead having conductive and nonconductive states so that pulses of electrical energy can be supplied to the glow plug. A resistor and a capacitor are coupled between the leads in parallel with the glow plug so that the capacitor can charge when the electronic switch is in the conductive state and discharge when the electronic switch is in the nonconductive state. A timer is used to place the electronic switch in the conductive state for a predetermined amount of time. The timer is in turn controlled by a transistor having its base coupled to a junction between the resistor and the capacitor.

Abstract: N-Adamantane-substituted tetrapeptide amides and the pharmacologically acceptable salts thereof are disclosed herein. These compounds are analogs of enkephalin wherein the methionine or leucine of position 5 has been substituted by an adamantyl amide and the glycine of position 2 has been substituted by various amino acid residues. Optionally the tyrosine of position 1 and the phenylalanine of position 4 may be substituted by various amino acid residues. These compounds exhibit agonist activity at opiate receptor sites and are useful as analgesics.

Abstract: The invention relates to the method of making a beater roll comprising a body and a saw tooth wire helically fitted to the surface of the body wherein the helical convolutions are in spaced relation and wherein a sealant is employed to seal repetitive gaps or spaces between the base of the wire and the smooth cylindrical surface of the beater roll, such repetitive spaces or gaps being caused by placing the set necessary to accommodate wire clothing to the cylindrical surface of a roll as used in open end spinning.