baber/WOPTO huggingface dataset:
Patent ES-293279-A1 (ES)
Title: Parametric amplifier with lumped constant turnable resonant loop in idler cavity
IPC: H03F7/04
Filed: 1963-11-07
Abstract: In a parametric amplifier the idler circuit is tunable to the natural resonant frequency of the variable impedance element, and is electrically isolated from the signal circuit. The idler circuit is tunable by plunger 18, varying the capacitance between the plunger and varactor 10, the latter forming with its holder an inductive load. If the varactor is capacitive at the idler frequency tuning is by means of a variable inductor comprising a short-circuit of variable thickness or width. The central member 22 of the coaxial signal circuit 12 contains a spring- loaded plunger 24 contacting a shoulder contact on varactor 10. A radial type choke 14 presents an open circuit to the idler frequency and isolates the idler circuit from the signal circuit, and hides plunger 18 from the signal circuit, so that the latter is insensitive to the plunger position. Pump waveguide 16 is dimensioned to reject the signal and idler frequencies, and the varactor is magnetically coupled into the sinusoidal pump wave. It is stated that only a low level of pumping is required and that a tunnel diode oscillator forms a suitable pump source. A double quarter wave transformer 20 is provided for impedance matching. The resonant frequency of the varactor unit may be varied by changing the varactor holder and/or the position of choke 14. In a modification (Fig. 3, not shown) a cup choke is used instead of a radial choke. In addition a pump choke is provided in the upper end of the signal circuit to reject the pump frequency, and transformer 20 is formed on the central member of the coaxial signal circuit, rather than on the outer wall. Preferably the transformer tunes out the reactive element of the varactor at signal frequency. The varactor may be replaced by a ferrite element an LCLC ladder network may be used instead of a radial or cup choke and a rectangular waveguide may be used for the signal and idler circuits.
Patent ES-314829-A1 (ES)
Title: Machine for making a row of holes in a pack of sheets or leaves
IPC: B26F1/16
Filed: 1965-07-01
Abstract: In a machine for making a row of holes in a pack of sheets comprising a work-table 1, a vertically-movable clamping beam 2 and a vertically-movable drilling complex equipped with a row of drills 16 spaced equidistantly from each other, the drilling complex being continuously displaceable in the axial direction of the drills and displaceable stepwise in a direction normal to the drill axes, the work-table and the clamping beam each having a row of guide holes 3 or 4 for the drills and the distance between each two neighbouring drills being a multiple of the distance between the axes of each two neighbouring guide holes, each drill is a hollow tubular punch drill the cutting edge 16a of which tapers inwardly to form a frusto-conical hollow 17a. The drill chuck 7 has an opening 7a through which the punched-out chips pass to a channel 8 to which a suction device is connected. The drive pulleys, e.g. 9a are operated together in groups of five by means of an endless belt and a driving pulley driven by its own electric motor and each belt being provided with a tensioning belt which can be retracted by means of a manually-operable spring-influence lever. The raising, lowering and advancing movements of the drill complex can be effected hydraulically.
Patent ES-317684-A1 (ES)
Title: Improvements relating to hydro-pneumatic suspension devices
IPC: B60G17/048
Filed: 1965-09-22
Abstract: In a telescopic hydropneumatic suspension strut comprising a working cylinder 12 with a piston 13 slidable therein and which communicates, through two-way valve controlled ports in a head 14, with the inner 11 of two compartments in an outer cylinder 1, which compartments are divided by a tubular elastic diaphragm 2 to form an outer air spring 3, the piston 13 has a barrel-shaped head 18 which bears on the inner surface of the cylinder the piston projecting through a ball member 10 movable in corresponding bearing members 20 housed in a cylindrical plug 9 for the lowest end of the cylinder 1. A swivel joint 7 is mounted by means of a strap 8 to a top cover 6 for the cylinder 1, and a ball joint 26 is carried at the lower end of the piston 13 as well as a stub axle 25, sealing packings 22, 23 being accommodated in a closure plate 21 for the cylindrical plug 9. An oil-filler nipple 30 may be connected to an hydraulic slide valve adjusted in accordance with the height of the vehicle body and may lead either to a high pressure oil source or to a reservoir at atmospheric pressure. During a compression stroke oil passes through a duct 19 in the piston into a clearance between the cylinder 12 and the piston 13. Oil leakage past the packing 22 may be returned to the reservoir through a groove in the closure plate 21 and a pipe 29. Alternatively, leakage oil may be recovered in a compartment enclosed by a bellows 28. In a modification, Fig. 2, not shown, the piston (13) acts as a stub axle king pin, the ball joint (26) being mounted on a swingable arm (31) pivoted on the frame of a vehicle.
Patent ES-338213-A1 (ES)
Title: Moulding Compositions for the Production of Foamed Articles
IPC: C08J9/00
Filed: 1967-03-18
Abstract: Particulate moulding compositions, for the production of foamed articles, consist essentially of a mixture of a styrene polymer and an expanding agent, wherein the particles comprise 0À001-0À1% by weight on the styrene polymer, of bromination products of butadiene and/or isoprene polymers whose content of vinyl or isopropenyl groups is at least 50% prior to bromination. The moulding materials according to the invention are heated by conventional methods in moulds which are not gas-tight when closed, causing the particles to expand and fuse together to form articles whose dimensions correspond to those of the mould's internal cavity. In the examples the pre-expanded particles are moulded into a block, in a rectangular mould, by treatment with steam for 30 seconds at a pressure of 0-8 atmosphere gauge. Incorporation of the brominated products into the composition allows removal of the moulding from the mould after a short period of time, compared with previous known processes, without fear of subsequent deformation.
Patent ES-340950-A1 (ES)
Title: Polyurethane foams prepared from mixtures of polyether polyols
IPC: C08G18/48
Filed: 1967-05-24
Abstract: Polyurethane foams are obtained by reacting ethylene oxide and 1,2-propylene oxide and/or 1,2-butylene oxide with a polyol to produce a polyether-polyol (a) having an equivalent weight of from 300-2000 per terminal hydroxyl group, 20% to 60% by weight of the oxide condensed with the polyol being ethylene oxide, mixing this polyether polyol with a polyetherpolyol (b) having an equivalent weight of from 300 to 2000 per terminal hydroxyl group and which has been prepared by reacting 1,2- propylene oxide with a polyol, 10% to 75% by weight of the resulting mixture being comprised of the polyether polyol containing groups derived from the ethylene oxide and then reacting the mixture with an organic polyisocyanate to produce a foam. The polyether polyol (a) may be prepared by reaction of the alkylene oxides on polyols such as diethylene glycol, dipropylene glycol, glycerine, trimethylolpropane, pentaerythritol or sorbitol either in succession or in the form of a mixture of oxides. Preferably the ethylene oxide is firstly reacted followed by treatment with the other oxides. The reaction is carried out at 5-10 kg./cm.2 pressure and at a temperature of 80- 160 C. in the presence of an alkaline catalyst in amounts of 0À1-1% by weight based on the total reactants. The polyol (b) may be an addition product of 1,2-propylene oxide with dipropylene glycol, glycerine, trimethylolpropane, pentaerythritol or sorbitol. Flexible polyurethane foams are prepared by reacting with polyisocyanates such as toluene diisocyanate or diphenylmethane di-isocyanate with water or halogenated hydrocarbons such as trichloromonofluoromethane as swelling agent, silicone oil as surfactant and tertiary amines or contain tin salts such as the octoate as catalysts.
Patent ES-345755-A1 (ES)
Title: Processes for whitening and retarding sunlight yellowing of protein fibers by treatment with a fluorescent brightening agent,thiourea,and a source of formaldehyde
IPC: D06L4/30
Filed: 1967-10-04
Abstract: Protein fibres, e.g. wool or silk in the form of fabric or slubbing, are whitened and/or their sunlight yellowing is retarded by a process comprising the steps of (a) treating them with thiourea or a derivative thereof, e.g. N-methylthiourea, N,N'-dimethylthiourea, ethylenethiourea, a methylol thiourea or a disulphide of thiourea, and at least two of the steps of (b) treating them with formaldehyde or a source of formaldehyde, e.g. paraformaldehyde, dimethylol ethyleneurea, methylolated hydroxyethyl carbamate or tetrakis (hydroxymethyl) phosphonium chloride, (c) applying thereto a fluorescent brightening agent, e.g. a pyrazoline, stilbene, coumarin or triazine type brightening agent, or (d) bleaching them with a reductive bleaching agent e.g. sodium hydrosulphite or sodium formaldehyde sulphoxylate. The steps may be carried out sequentially or simultaneously. The fibres may be treated by heating them in the treating solution at or near the boiling point of water and drying, padding them with the solution and heating them in air at a temperature near the boiling point of water and subsequently drying, or padding them with the solution and drying in an air oven at or near 80 C for 5-10 minutes. The fibres may previously have been bleached with hydrogen peroxide which may contain sodium pyrophosphate. They may also be treated with a solution of a polyvalent metal cation, e.g. by soaking for -1 hour in a 0.5% by weight aqueous solution of aluminium sulphate, treated with a shrinkproofing resin, e.g. a polyacrylate, or shrinkresist agent, e.g. a permanganate, permonosulphate or dichloroisocyanuric acid or a salt thereof, or dyed in pastel colours. When applying thiourea and formaldehyde or a source thereof separately, the thiourea is preferably applied first and at least the thiourea applied from a solution of dilute formic acid at pH 1-2.
Patent ES-348048-A1 (ES)
Title: Method of controlling plant growth with carboxamidothiazoles
IPC: C07D277/32
Filed: 1967-12-07
Abstract: A plant growth regulating composition comprises a solid carrier, or a liquid carrier and a surface active agent, together with a carboxamidothiazole of formula wherein X is alkyl, substituted alkyl, amino or substituted amino, and R1 and R2 are H or substituted or unsubstituted hydrocarbon or R1 + R2 together with the N form an heterocyclic ring. The substituents on the hydrocarbon groups may be halo, nitro, carboxyl, ester, ether, alkoxy or carboxylic acyl. The invention comprises the application (e.g. to plants, seeds or the soil) of the above compositions or the carboxamidothiazole compounds per se.
Patent ES-349798-A1 (ES)
Title: Method of manufacturing a fabric-like material
IPC: D04H13/00
Filed: 1968-01-26
Abstract: A textile material is made by impregnatng fibrous material with an aqueous dispersion of polymeric material, removing part of the water to form an adhesive elastomeric surface and pressing thereon without heating a layer of tissue paper (or loose fibres, see Division B2). The base material may be a non-woven rayon, cotton or nylon web or tissue paper. The impregnant may be used in amount 15-20 gm./m.2 and may be plasticized natural rubber latex, polyisobutylene, polyvinyl ester or polyacrylic ester, and the dispersion thereof may include petroleum resin and an antioxidant. The surface layer may comprise creped tissue paper. The impregnant may be applied by roller or by immersion, excess being removed by squeeze rollers or air blade. Water may be removed by evaporation in a drying cupboard. Tissue paper can be applied to both sides of the base, or tissue paper can be applied to one side and loose fibres to the other.
Patent ES-356972-A1 (ES)
Title: Forming Holes in Hot Pressed Articles
IPC: B28B7/18
Filed: 1968-08-06
Abstract: Hard refractory compounds are moulded to high density articles by the hot pressing thereof, and are formed with a hole therethrough or a cavity therein by incorporating a removable insert of a mixture of carbon, e.g. graphite powder, with a hard refractory compound powder having at least as high a coefficient of thermal expansion as the refractory of the article and a melting point above the hot pressing temperature, the insert being removed by sand blasting. The refractory of the article may comprise Al 2 O 3 , B 4 C, TiB 2 , TiC, ZrO 2 , for which insert mixtures are specified comprising graphite with the same refractory or a mixture thereof with a different refractory. The article refractory and the insert mixture preferably incorporate a binder, e.g. wax. The article and the insert may both be separately preformed prior to the hot pressing. Alternatively the article refractory may be disposed around the insert prior to the hot pressing. An example is given wherein the article and insert are respectively preformed, with wax binder, from boron carbide, and a mixture of 50% B 4 C and 50% C. The assembly is hot pressed at 1000 to 2000 p.s.i. at 2200 C. for 5 minutes within a graphite mould coated with a mould release agent comprising flake graphite slurry in a polyethylene glycol/methylene chloride vehicle.
Patent ES-359390-A1 (ES)
Title: System for suppressing multiple pulse in marine seismic sources by injection of additional air
IPC: G01V1/387
Filed: 1968-10-22
Abstract: In a seismic energy generating device a burst of gas is released underwater to form a bubble and oscillation of the bubble is reduced by introducing a further burst of gas into the bubble. The Fig. 1 embodiment comprises an air gun 12 which is supplied with high-pressure (e.g. 2000 p.s.i.) air from source 14 and is fired by closing switch 32 to open solenoid valve 28. Oscillation-suppressing gas in a tank 18 supplied from low-pressure (e.g. 150 p.s.i.) source 20 is released by the opening of solenoid valve 24 (preferably when bubble 27 has reached its maximum size) after a delay determined by circuit 38. In various modifications (a) tank 18 is omitted and gun 12 is fired a second time to provide the oscillation-suppressing gas and (b) alternative electrical firing circuits or an hydraulic or air-actuated firing circuit may be used. Several of the seismic energy generating devices may be operated together and supplied from a single compressor.
Patent ES-366959-A1 (ES)
Title: Method of, and machine for, rivetting wire terminals to a substrate
IPC: H05K13/04
Filed: 1969-05-08
Abstract: A terminal 3 is formed from a length of wire 11 fed through a bed-plate 8 and between opposed dies 9, 10 which form a shoulder 5 on the wire and sever the previous terminal from the wire. The wire is fed by a pneumatically operated collet (23), Fig. 6 (not shown), until the shoulder abuts the surface of the insulating plate 1. The dies 9, 10 are moved towards each other by cam or pneumatic means so that the edges 13, 14 co-operate to sever the wire and the surfaces 15, 16 form a shoulder on the next terminal portion. The plate 1 is simultaneously fed on guides 6 so that the terminal is positioned under a die head 19. The terminal is supported on the surface 18 of the die 10 and the die head 19 heated by an electrode 20. The electrode and die head are both moved pneumatically. The plate 1 is preferably glass or ceramic which is coated either before or after the terminal insertion. The wire is copper or brass coated with solder.
Patent ES-367807-A1 (ES)
Title: Tracking roller
IPC: G03G15/00
Filed: 1969-05-28
Abstract: A tracking roller 110 for a xerographic belt 1 is mounted'by spherical bearings 105 on mutually inclined stub shafts 103, 104 to permit angular adjustment of the roller axis without distortion of the roller. The roller shell 110 is engaged by end plates 111, 112 and carries a resilient sleeve 115 supporting the belt 1 whose edges engage metallic flange rings 123, between which and the end plates are resilient cushioning rings 122. In operation if the belt deviates laterally and rides over either of the flange rings 123 controlled corrective angular adjustment of the roller axis is effected by spring-loaded bellcranks 102 carrying the stub-shafts 103, 104.
Patent ES-372448-A1 (ES)
Title: Process for production of an artificial leather and product
IPC: C08L75/04
Filed: 1969-10-13
Abstract: Process of producing an artificial leather by coagulating or hardening a polyurethane gel applied to a substrate into a microporous layer which is permeable to water vapor, wherein a silicone oil is added to the initial gelable solution of the polyurethane in an organic solvent.
Patent ES-379392-A1 (ES)
Title: Electromagnetic voltage regulator switches
IPC: H02J7/22
Filed: 1970-05-06
Abstract: An electromagnetic switch of the kind used for voltage regulation has a biasing spring blade 5 mounted on the armature 4 and engaging an adjustable cam 10 similar to that of Specification 832,393 is provided with a compensating bimetal strip 11 mounted on the armature 4 and disposed in spaced relationship to the spring blade without any point of contact therewith but linked thereto at their free ends by an attachment member 12. The member 12 fits in notches 5b, 5c, 11b, llc, of the spring and bimetal strip.
Patent ES-382063-A1 (ES)
Title: Spinning frames
IPC: D01H1/24
Filed: 1970-07-22
Abstract: A spinning frame having spindles comprising a fixed part for the admission of slivers, and a rotary spinning bowl part, is so arranged that the bowl can be belt driven at relatively high speeds, and the two parts can be pivoted apart for inspection or cleaning, without handling of driving belts, and so that the drive is automatically disengaged.
Patent ES-397310-A1 (ES)
Title: Antifriction bearing assembly for electric motors
IPC: F16C33/66
Filed: 1971-11-24
Abstract: A worn grease containing chamber is formed in an outside bearing cover of an antifriction bearing, which chamber extends horizontally towards a peripheral portion thereof and opens to an axial outside portion of the antifriction bearing. The bottom portion of the worn grease containing chamber inclines towards the lowest inner surface of the outer race of the antifriction bearing. The height of the lowest surface of the bottom portion of the worn grease containing chamber is selected to be at least even with or higher than that of the lowest surface of the inner surface of the outer race.
Patent ES-398196-A1 (ES)
Title: Meat analog apparatus
IPC: A23J3/22
Filed: 1971-12-21
Abstract: An apparatus for continuously producing a slab of fibrous, meat-like product in which amorphous heat coagulable dough is forwarded from a hopper by converging conveyors which induce substantially unidirectional transverse distension of the dough which distended dough, upon being heated sufficiently to induce coagulation, is transformed into a meat-like slab of substantially parallel, bonded, fibers.
Patent ES-398714-A1 (ES)
Title: Loading of fuel rods
IPC: G21C21/08
Filed: 1972-01-10
Abstract: A method of loading fuel rods of the nuclear variety with radioactive pellets wherein the rod is evacuated, subsequently filled with an inert gaseous atmosphere, loaded with such pellets in linear array, and sealed. The pellets in this method are brought in linear array from a supply station to a predetermined situs and then are transferred in such array into a linear bed which is subsequently sealed, evacuated of atmosphere and then filled with helium. The pellets are then transferred in such linear array from the bed to a communicating fuel rod and the latter is sealed in form for use in the core of a nuclear reactor.
Patent ES-400559-A1 (ES)
Title: Vibration damper
IPC: H02G7/14
Filed: 1972-03-08
Abstract: There is disclosed a vibration damper for an electrical transmission line or the like comprising a pair of weights supported at opposite ends of a rod and a pair of helically preformed dead-end appliances each having a pair of helical leg portions and an intermediate bight portion. One leg portion of each appliance is wrapped about the transmission line and the other leg of each appliance is wrapped about the rod, the appliances being applied so as to face in opposite directions with their respective bight portions overlapping to form a central loop.
Patent ES-403628-A1 (ES)
Title: Retention devices for sheet material
IPC: E04C5/12
Filed: 1972-06-08
Abstract: A retention device for gripping, anchoring and/or tensioning sheet material, particularly plastics sheeting, comprises a wedge the thin end of which is extended for manipulation, the wedge including the extension thereof being split in at least two parts for successive insertion through a slot with sheet material wrapping surfaces of the wedge.
Patent ES-404036-A1 (ES)
Title: Tumbler plate lock
IPC: E05B29/04
Filed: 1972-06-10
Abstract: A lock wherein a flat key acts on tumbler plates, slidable in a core, to slide these several plates in one direction while an elastic biasing element or return spring, surrounding the structure, urges them in the opposite direction. The elastic element can directly contact a small boss on each tumbler plate. It urges each tumbler plate to return in the direction of the plate's axis, thereby minimizing looseness of the core and tumbler structure.
Patent ES-421455-A1 (ES)
Title: Clearance-sensing slack adjuster for a vehicle brake-actuating pneumatic cylinder-piston unit
IPC: B60T17/08
Filed: 1973-12-14
Abstract: A clearance-sensing slack adjuster operated by an air cylinder brake application stroke has two linearly disposed spindles axially aligned. A screw threaded adjuster spindle is rotatably mounted in a rotationally immovable adjustment nut with a clearance space separating the spindle end in a normal position from the end of the other push spindle member which is rotatable within the brake push rod, so that the two spindles members can axially engage each other and rotate in a direction selected by one way clutch arrangements to adjust slack on the return stroke. Means is provided to prevent adjustment during the elasticity part of the release stroke. The screw threads of the two spindles have the same pitch but different diameters so that only the adjuster nut is non-self-locking.
Patent ES-434686-A1 (ES)
Title: Apparatus for reading a record carrier on which information is stored in an optically readable structure
IPC: G11B7/1365
Filed: 1975-02-13
Abstract: An apparatus is described for reading a record carrier on which information is stored in an optically readable structure. Between a radiation source and an objective system, a polarization-sensitive beam splitter and a lambda /4 plate are disposed. The optic axis of the lambda /4 plate is perpendicular to the end faces, so that the plate may be thick and may be rotated in its own plane.
Patent ES-447234-A1 (ES)
Title: Anticaries piperidino compounds
IPC: A61P1/02
Filed: 1976-04-22
Abstract: Novel alkyl 1-(hydroxyalkyl)piperidines and acid addition salts thereof, useful as inhibitors of dental plaque and therefore also useful against dental caries and periodontitis, are disclosed. Methods of making same, orally-acceptable compositions thereof, a method of treating therewith, and important and novel intermediates for the production thereof are also disclosed.