baber/WOPTO huggingface dataset:
Patent ES-349550-A1 (ES)
Title: Pneumatic conveying system
IPC: B65G53/66
Filed: 1968-01-20
Abstract: The flow of granular material into an entrainment chamber 101 of a pneumatic conveying system is regulated by a valve 106 actuated by a modulating control mechanism acting in response to pressure variations in the system, the arrangement being such that a valve at the discharge end of the conveying line may be closed and re-opened without any blocking of the conveying line during the period of shutdown. As shown, the control mechanism comprises a valve housing 112 divided into upper and lower chambers, the upper chamber being divided by a flexible sealing sheet 108 into an entrainment chamber 101 and a balance chamber 127 connected by a tube 123 to the air supply duct 23. The lower chamber is divided into control chambers 113, 114 by a flexible diaphragm 111 secured to the stem 107 of the valve 106, which is urged to the closed position by an adjustable spring 115. The control chambers 113, 114 are connected by tubes 118, 119 to the air supply duct 23 at positions upstream and downstream, respectively, of an adjustable pressure differential device 122. In operation, the valve 106 remains closed until the air flow increases to produce a sufficient pressure drop across the device 122 to cause the diaphragm 111 to move down against the action of the spring 115, thereby opening the valve progressively. The introduction of material through the valve increases the flow resistance in the conveying line 24 thereby opposing the free inflow of air through the device 122 and reducing the pressure differential across the diaphragm, which then rises through a corresponding distance. The control device thus modulates the rate of material inflow in proportion to the air flow rate. In a modification, Fig. 4, for use when it is required to operate the system at a substantially constant pressure regardless of changes of line length, material or air supply, an automatically adjustable valve 951 is provided wherein a chamber 84 is connected to the air supply duct 23 by a conduit 89 and has its upper wall constituted by a diaphragm to which the valve gate 81 is connected. An increase in air pressure raises the gate 81 and reduces the pressure differential across the valve, thereby reducing the flow of material through the valve 106 and causing a decrease in pressure in the system.
Patent ES-349778-A1 (ES)
Title: Process for the separation of mixtures of phosphoric and nitric acid
IPC: C01C1/18
Filed: 1968-01-15
Abstract: An aqueous mixture of H 3 PO 4 and HNO 3 , obtained e.g. by treatment of phosphate ore with HNO 3 followed by separation of the Ca salt, is extracted with an alcohol containing 4-8 carbon atoms, the water concentration of the alcoholic extract is adjusted if necessary to 8À5-12% by wt., and ammonia is then added to the extract to precipitate ammonium phosphate. NH 4 H 2 P0 4 , (NH 4 ) 2 HP0 4 , or a mixture, is obtained if NH 3 is added until the pH is 3À0-5À5, 7À5-8À5, or 5À5-7À5 resp. The alcohol may be 2-ethyl 1-butyl alcohol, isobutanol, isoamyl alcohol, or C5 oxo synthesis alcohols (n-amyl, active amyl and isoamyl alcohols). 3 phases are obtained: a ppt. of ammonium phosphate, an aqueous solution containing a little NH phosphate and part of the NH 4 NO 3 , and an alcoholic solution containing the remaining NH 4 NO 3 . In Fig. 1 and Ex.1, mother liquor 1 from the attack of phosphate ore with HNO 3 is cooled to 10 C. to crystallize out Ca(NO 3 ) 2 .4H 2 O and extracted in countercurrent at 2 with alcohol 3. The extract is purified at 5 and part is further extracted with water at 8, aqueous solution 11 being fed back to 5. Alcohol 10, free of H 3 P0 4 is recycled to 2. Remaining extract 12 is treated with NH 3 gas in tank 13. Solid ammonium phosphate 17 is filtered off and the alcoholic phase is washed with water in 19. Alcohol 20 is recycled to 2 and aqueous solutions 21 and 22 are combined and evaporated. In Fig. 2 (not shown) and Ex. 2, the mother liquor is cooled further to - 100 C. to remove more Ca(N0 3 ) 2 and the whole of alcoholic extract 6 is treated with NH 3 . In Fig. 3 (not shown) and Ex. 3, alcoholic extract 4 is passed directly for NH 3 treatment.
Patent ES-352561-A1 (ES)
Title: Device for automatic charging of defibrer magazines with pulpwood
IPC: D21B1/06
Filed: 1968-03-29
Abstract: Hoppers 2 with a defibering stone (not shown) for forming wood pulp are fed with pulpwood by a horizontal endless conveyer 1 and a guide plate 5, the latter having an aperture respective to each hopper 2 under which is positioned a wedge-shaped guide member 12. The latter serves to guide the pulpwood so that its axis is disposed parallel with the axis of the pulp forming stone. The member 12 is suspended by ropes 10 beneath further guides 8, 9.
Patent ES-359428-A1 (ES)
Title: Polymer Latices
IPC: C08C1/07
Filed: 1968-10-23
Abstract: A latex of a polymer, the surface of particles of which can coalesce and containing as emulsifying agent a salt of an organic acid, is mixed with a water-soluble acid anhydride, the acid of the anhydride having a higher dissociation constant than the acid of the salt, and the mixture is allowed to stand with minimal agitation to hydrolyse the acid anhydride and produce agglomeration, whereafter the latex is stabilized either by addition of further emulsifier or by regenerating the emulsifier by the addition of alkali. If desired, the polymer latex may contain an electrolyte. The polymer of the latex can be a rubber, or in the case of a styreneacrylonitrile copolymer, the particle surfaces can be softened by prior contact with styrene monomer. Suitable anhydrides are acetic anhydride and maleic anhydride. Sodium oleate is the exemplified first emulsifier.
Patent ES-364479-A1 (ES)
Title: Circuit arrangement for receiving electrical signals
IPC: H03F1/44
Filed: 1969-03-07
Abstract: In an input circuit arrangement a signal is applied via input terminals 2, 3, a coupling network having a series inductor La, a parallel resonant circuit Ct, Cv, Co, Lp tuned by at least one variable capacity diode Cv and including at least one element capable of dissipating a portion of the power of the signal and an impedance inverting transformation network having a series inductor Li to the input of a common base transistor T, the coupling network, the inverting transformation network and the element or elements capable of dissipating signal power are proportioned such that the input impedance of the circuit substantially matches the impedance of the source of input signal and also provide a substantial optimum noise level in the transistor. The element or elements capable of dissipating signal power are at least partially formed by the natural losses of the variablecapacity diode Cv which may be represented as a resistor in series with Cv. The series inductors La, Li transform the resistance of the signal source to the input resistance of the transistor T to produce across the resonant circuit conductances which are inversely proportional to the square of the frequency. At least one additional loss resistor R I , R III may be provided which may be transformed across the resonant circuit to produce a conductance (Gp, Fig. 2, not shown), which is inversely proportional to the square of the frequency. Loss resistors may be provided in series with Lp or Cv branches or in series with the parallel circuit of Lp and Cv. In the television tuner shown, switch S I , S III provides variable capacity diode Cv I with a reverse bias-tuning voltage for Band I reception whereas variable capacity diode Cv III is forward biased so as to short out the Band III tuned circuit Lp III , Ct III , Co III , Cv III , R III . The opposite occurs for the other position of band switch S I , S III where transistor T receives Band III signals as tuned by Cv III . The input to the Band III tuned circuit is via a HPF8 which passes signals of Band III and above. The input to both Band I and Band III circuits is via a HPF 7 passing signals of Band I and above. In an alternative input circuit (Fig. 4, not shown), the inductors La I and La III are fed from input terminal 2 via separate circuits each including a capacitor and an inductor tuned to the respective Bands I and III. In a single tuned circuit arrangement (Fig. 1, not shown), transformer coupling may be provided between input terminals 2, 3 and inductor La, between La and the parallel tuned circuit, between the tuned circuit and inductor Li and between Li and transistor T. The dispersion inductance of these transformers can form at least part of the inductors La, Li or Lp and the series inductors La or Li or the variable capacity diode may be connected to a tap of the inductor Lp. Specification 1,099,890 is referred to.
Patent ES-373121-A1 (ES)
Title: Processes for the manufacture of organotin compounds
IPC: C07F7/22
Filed: 1969-11-03
Abstract: A process for preparing a tricyclohexyltin halide, the cyclohexyl rings of which may be inertly substituted, comprises reacting an organotricyclohexyltin with a tin tetrahalide, usually in equimolar quantities at 0-120 C. in a solvent. Specified inert substituents are methyl, isopropyl, n-butyl, t-butyl and phenyl groups. The organo group in the first reactant may be alkyl, alkenyl, cycloalkyl, aralkyl, aryl or alkaryl and may be inertly substituted, many such groups being specified. The first reactant is usually obtained by reacting an organotin trihalide and a cyclohexyl magnesium halide in a hydrocarbon solvent, the organotricyclohexyl tin being recovered by hydrolysis of the reaction mixture with aqueous citric acid. The organotin trihalide may be prepared by reacting a tetraorganotin with a tin tetrahalide. In the examples, tricyclohexyltin chloride is prepared from (a) SnCl 4 and C 6 H 5 Sn(C 6 H 11 ) 3 , the latter being prepared from C 6 H 5 SnCl 3 (from SnCl 4 and (C 6 H 5 ) 4 Sn) and C 6 H 11 MgCl and from (b) SnCl 4 and C 4 H 9 Sn(C 6 H 11 ) 3 .
Patent ES-381380-A1 (ES)
Title: Development electrode
IPC: G03G15/06
Filed: 1970-07-02
Abstract: A development electrode placed in a xerographic development zone in close parallel relation with a moving latent image bearing member having a potential thereon between the image potential and background potential on the member and having means to redirect the flow of developer material moving through this region so that the developer material impinges against the surface of the member.
Patent ES-398434-A1 (ES)
Title: Method and apparatus for separating particles from a liquid
IPC: B01D21/00
Filed: 1971-12-29
Abstract: Method for the separation of particles from a liquid in a basin with a central feed of the mixture of liquid and particles, the outflow being directed outwardly and horizontally thereby creating a centrifugal flow towards the periphery of the basin, upon which flow a velocity component in tangential direction is imparted thus producing a horizontal vertex field.
Patent ES-401051-A1 (ES)
Title: Electrical display devices
IPC: G09G5/22
Filed: 1972-03-22
Abstract: An addressing circuit arrangement for an electrical display device comprising a two-dimensional matrix of light-emitting elements which are connected at respective crosspoints formed by two groups of row and column conductors and each of which can be illuminated selectively by suitable energizing signals applied contemporaneously to the two conductors, one in each group, between which the element is connected. The arrangement includes, a circulation memory for storing character data in respect of a plurality of lines of characters to be displayed and for supplying in turn the character data for each line of characters serially character by character in a recurrent cycle, a character generator which is responsive to the supplied data for each character to produce a group of coded electrical signals that determine the discrete parts of the character to be displayed in the row of elements concerned, and a row store for storing in each fill period of each row period the several groups of coded electrical signals for the whole of the row of elements concerned.
Patent ES-404794-A1 (ES)
Title: Heterocyclic substituted xanthone carboxylic acid compounds
IPC: C07D409/04
Filed: 1972-07-12
Abstract: Compounds containing and methods employing, as the essential ingredient, heterocyclic substituted xanthone carboxylic acid compounds which are useful in the treatment of allergic conditions. Methods for preparing these compounds and compositions and intermediates therein are also disclosed. 7-(2-Tetrahydrofuryl)-xanthone-2-carboxylic acid is illustrated as representative of the class.
Patent ES-411078-A1 (ES)
Title: Method and apparatus for vertically drawing a glass ribbon
IPC: C03B15/08
Filed: 1973-01-22
Abstract: In the manufacture of sheet glass by drawing a ribbon of glass upwardly from a molten glass bath via a meniscus located at the glass surface in the drawing zone, a pool of molten material is contained in the bath beneath the drawing zone by a refractory member and the molten material pool is thermally conditioned to maintain a predetermined temperature profile in at least part of the drawing zone.
Patent ES-421499-A1 (ES)
Title: Ice cream
IPC: A23G9/44
Filed: 1973-12-14
Abstract: Acid ice cream produced using protein that is not acid-precipitable, for example whey protein, or using protein that is acid precipitable but using an acid-stable water-binding stabiliser to reduce coagulation of the protein.
Patent ES-424878-A1 (ES)
Title: Optical projectors
IPC: G03B21/20
Filed: 1974-04-02
Abstract: Optical projectors of the kind which supply a beam of radiation whose total angular field 2 rho ' is determined in at least one reference plane, the angular field containing all the radiant flux, the projector also incorporating a source of radiation associated with a reflecting optical collector system, a conoid or pyramidoid mirror which has at least the reference plane as a plane of symmetry and the minor base of which in conjunction with the reflecting optical collector system, entirely contains optically the source of radiation. The mirror is made to conform to the following dimensional relationships which apply to each cross-section of the mirror through a plane of symmetry: D sin ( theta - gamma ) SIMILAR , d sin ( theta ' - gamma ) WHERE D and d are respectively the cross-sectional lengths of the major and minor bases of the mirror in the cross-sectional plane in question, gamma is half the mean apex angle of the mirror in the cross-sectional plane in question, and theta is half the maximum pre-determined angle of the angular extension of the radiant beams received at the minor base of the mirror.
Patent ES-429072-A1 (ES)
Title: Lubricant cooling apparatus for a vertical electric motor
IPC: F16C37/00
Filed: 1974-08-08
Abstract: A vertical motor having a heat-generating thrust bearing that is immersed in liquid lubricant is provided with a lubricant cooling apparatus comprising a plurality of articulated U-shaped ducts both legs of which are vertically mounted in the liquid lubricant to afford maximum heat exchange exposure therewith. The legs of each of the U-shaped ducts are radially aligned with the motor drive shaft and the mouths of each of the outermost legs are in communication with the exterior of the motor whereas the mouths of the innermost legs are in communication with the interior of the motor. Thus, fan blades associated with the motor rotor are operable to draw air through both legs of the U-shaped ducts to the interior of the motor housing, causing the air to flow over heat exchanger fins in the U-shaped ducts thereby to efficiently cool the liquid lubricant and the thrust bearing.
Patent ES-430362-A1 (ES)
Title: Preparation of pure bromine from aqueous hydrobromic acid solutions
IPC: C01B7/09
Filed: 1974-09-24
Abstract: Pure liquid bromine is produced directly from an acidic aqueous bromide mother liquor by reacting it with about 80 to about 90% of the amount of chlorine stoichiometrically equivalent to the bromide present in the whole supplied mother liquor and collecting the liquid bromine which separates out of solution the remaining mother liquor free from liquid bromine is steam distilled in the presence of sufficient chlorine to convert the rest of the bromide to bromine and to condense crude liquid bromine which is purified by washing with sufficient fresh mother liquor. Production capacity is increased by about 20% compared to conventional process in which all the bromine is submitted to steam distillation.
Patent ES-441238-A1 (ES)
Title: Method of manufacturing resin tubes alternately having a thick wall portion and a thin wall portion
IPC: B29C48/09
Filed: 1975-09-24
Abstract: Resin tubes having thick walled portions and thin walled portions are formed by providing a specially configured orifice on an extruder and varying the rate at which the extruded resin tube is pulled from the extruder. The orifice is shaped to form a thin tubular opening and a thick tubular opening communicating with one another, the thick tubular opening being adjacent and down-stream of the thin opening. When the extruded resin tube is pulled at a high speed the thin tubular opening is filled with resin that passes through but does not fill the thick tubular opening. At the slow pulling speed the resin fills at least the open-end portion of the thick tubular opening thereby forming a thick walled portion of the resin tube.
Patent ES-447007-A1 (ES)
Title: Purification of sucrose esters
IPC: C09K23/00
Filed: 1976-04-14
Abstract: A soap-free sucrose ester-containing surfactant is obtained by transesterifying sucrose with at least one fatty acid triglyceride to produce a solid material containing sucrose esters, glycerides and fatty acid soaps, and treating this material with a solution of a metal salt in water or an alkanol to produce a second solid material and separating the soap-free product containing sucrose esters by dissolving the esters present in an alkanol and evaporating the alkanolic solution to dryness. Glycerides are removed, where desired, by extracting with an organic solvent.
Patent ES-450252-A1 (ES)
Title: Transmission-regulating device for motor vehicle
IPC: F16H61/662
Filed: 1976-07-29
Abstract: A device for regulating the transmission of a vehicle incorporating a speed variator and a reverse gear has a hydraulic regulating member and an electrically operated valve disposed in a discharge conduit of the member. Two parallel normally open arms of the energizing circuit of the valve may be closed by two switches respectively operated by a member connected to the accelerator of the vehicle and by a member connected to the reversing gear, energization of the electrically operated valve leading to an interruption of the discharge conduit of the device.
Patent ES-450434-A1 (ES)
Title: Vapor generator
IPC: F22B37/24
Filed: 1976-07-24
Abstract: A bottom supported vapor generator having tubular platens communicating with upper and lower headers and including rigid members fixedly connecting the lower headers to a grid slidably supported on concrete pedestals.
Patent ES-453729-A1 (ES)
Title: Solar-thermal power plant
IPC: F24S23/00
Filed: 1976-11-27
Abstract: A solar-thermal power plant, comprises an open air circuit wherein the effective heat obtained from solar energy is supplied to the air current between a compressor and an expansion machine. The construction includes a solar heater which is exposed directly to solar radiation and which is traversed by the air current and provides a means for the direct solar heating of the air current which is conveyed from the compressor to the expansion machine.
Patent ES-454719-A1 (ES)
Title: Apparatus for discharging smokes, fumes and greases from kitchens
IPC: F24F7/04
Filed: 1976-12-30
Abstract: The invention relates to a new device for discharging smokes, fumes and greases from various indoor premises and comprising a set of ceiling elements arranged with smoke, fumes and grease discharging slits therebetween.
Patent ES-457170-A1 (ES)
Title: Absorption rate of absorbent polymers by treating with glyoxal
IPC: C08F8/00
Filed: 1977-03-24
Abstract: Water-absorbent crosslinked polymers are improved in their wicking capacity by treatment of their surface with glyoxal. The polymer can be a polysaccharide-acrylamide graft copolymer or a polymer or copolymer of acrylamide and/or sodium acrylate or sodium methacrylate.
Patent ES-458821-A1 (ES)
Title: 6-Aryl-pyrrolo{8 1,2-a{9 Imidazole derivatives which possess anti-hypertensive activity
IPC: C07D487/04
Filed: 1977-05-16
Abstract: 6-Aryl-pyrrolo[1,2-a]imidazole derivatives, processes for their manufacture, pharmaceutical compositions containing them and a method of using them to lower blood pressure in warm-blooded animals. Representative of the compounds disclosed is 6-(2,6-dichlorophenyl)-2,3,6,7-tetrahydro-5H-pyrrolo[1,2-a]imidazole.
Patent ES-460079-A1 (ES)
Title: Induction heating apparatus with adjustable flux concentrators
IPC: C21D9/60
Filed: 1977-06-23
Abstract: An induction heating apparatus for induction heating a strip metallic sheet material having a given width from one end to the other end of the material in the longitudinal direction while the material is transferred in the longitudinal direction, comprising a high frequency source, a high frequency coil coupled to the high frequency source and including at least one turn winding formed of two coil portions extending along the surface of the material in the lateral direction of the material to exceed the side edges of the material, a first magnetic flux concentrating member provided in the vicinity of one coil portion extending along the one coil portion to exceed the side edges of the material, and a second magnetic flux concentrating member provided in the vicinity of the other coil portion provided locally in the vicinity of the side edges of the material, whereby heating distribution is adapted to be made uniform throughout the width of the material.
Patent ES-464871-A1 (ES)
Title: Liquid sampling apparatus
IPC: G01N1/14
Filed: 1977-12-07
Abstract: The invention relates to an apparatus for sampling a liquid conveyed by a plurality of tubes. The sampling apparatus comprises a cylindrical enclosure with a vertical axis and a circular cross-section having a given length. The enclosure has a lower planar wall, a side wall and a cover which seals the upper part of the enclosure. One of the walls is perforated by a plurality of orifices whose number is at least equal to the number of tubes. The end of each tube issues into one of the orifices which are regularly disposed along a portion of a single curve without a double point. The length of this curve portion exceeds that of the given length. The sampling device also comprises a movable sampling member in the form of a single suction tube having a free end associated with means for simultaneously rotating the suction tube about the axis of the enclosure and for translating the tube in such a way that its free end remains in contact with the wall provided with orifices and moves along the curve. A particular application is to a system for locating breaks in the jacket of a reactor, particularly a liquid sodium-cooled reactor.
Patent ES-466521-A1 (ES)
Title: Crankcase ventilation valve for internal combustion engines
IPC: F01M13/00
Filed: 1978-01-31
Abstract: Crankcase ventilation valve for internal combustion engines with a valve casing which is divided into a first and a second chamber by a displaceable wall sealingly attached at the periphery, wherein the first chamber is in communication with the atmosphere and the second chamber is in communication on the one hand through an inlet tube with the crankcase and on the other hand through an outlet tube with the suction device by way of a cylindrical tubular member disposed in the second chamber, the displaceable wall and the tubular member being constructed as a non-return valve and the valve seat being surrounded by a concentric ring space which is connected to the inlet tube.