baber/WOPTO huggingface dataset:
Patent GB-1528390-A (GB)
Title: Fluid control ball valve
IPC: F16K5/06
Filed: 1976-10-26
Abstract: 1528390 Valves PEGLER-HATTERSLEY Ltd 26 Oct 1976 [19 Dec 1975] 52203/75 Heading F2V A rotary spherical floating ball valve, Fig. 1 (not shown), is provided with resilient annular sealing inserts 23 provided with low pressure 25 and high pressure 26 seating surfaces of concave-convex form and with a peripheral recess 24 of semicircular crosssection to equalize stress distribution on the seal. A groove 27 communicates the recess 24 with the line pressure and the seal part 22b can "valve open" to equalize pressures on the inlet and ball chamber sides to prevent high actuating torques. The seals are preferably of P.T.F.E.
Patent GB-1535749-A (GB)
Title: Battery plates
IPC: H01M4/76
Filed: 1975-12-22
Abstract: 1535749 Tubular plates for lead-acid batteries CHLORIDE GROUP Ltd 22 Dec 1975 [23 Dec 1974 15 Oct 1975] 52326/75 and 52325/75 Heading H1B A lead acid tubular battery plate comprising a porous envlope enclosing a lead or lead alloy current collector and a lead oxide active material between the current collector and the envelope has a ratio of the length of tube in cms. to free cross-sectional area in sq. cms. of 100 : 1 to 295 : 1, and a degree of stratification of the active material of less than 5%. The tubes are filled by the filtration method described in Specification 1,530,120 The tubes may be of a non-woven batt of polyester fibre impregnated with a polyacrylic binder and then, after forming into tubes by stitching two sheets, impregnating with phenolic resin. Alternatively spun woven fabrics may be used.
Patent GB-1287002-A (GB)
Title: Acoustic energy translating devices
Inventor: FAIR IRVIN ERNEST
IPC: H03H3/04
Filed: 1969-10-27
Abstract: 1287002 Electromechanical filters WESTERN ELECTRIC CO Inc 27 Oct 1969 [30 Oct 1968] 52467/69 Heading H3U A bandpass filter, Fig. 2, comprises a quartz crystal wafer 18 having resonators formed by a pair of input electrodes 10, 12 and a pair of output electrodes 14, 16. The resonators vibrate in the thickness shear mode and are " controlled coupled", i.e. the spacing between the electrode pairs is great enough to ensure that coupling between the resonator is less than a certain amount. Preferably the coupling between the resonators is small enough to ensure that their antiresonant frequencies fall outside the passband (Figs. 9-11, not shown). The pass-band may be varied by varying the mass of the electrodes. However, this method also varies the mid-band frequency and to overcome this difficulty fine adjustment of the pass-band is obtained by varying the mass of the wafer 18 in the space situated between the resonators. Thus, a deposition 24 of the required mass is plated in the wafer, this mass causing only a slight variation in the mid-band frequency. In another embodiment, Fig. 20, utilizing four resonators, fine adjustment of the pass-band is obtained by removing material from the wafer 82 in the form of recesses 84 and also by adding a deposition 86.
Patent GB-1262780-A (GB)
Title: Method of producing hypodermic needles with a plastics neck
Inventor: MITTENDORF ECKART
IPC: B29C65/48
Filed: 1969-10-29
Abstract: 1,262,780. Hypodermic needles. INJEKTA KLINGENTHAL VEB. 29 Oct., 1969, No. 53002/69. Heading A5R. In attaching a plastics hub 4 to a hypodermic needle 1 softening chemicals are applied to a knurled portion 2 of the needle, remote from the point, from a proportioning device, before the needle is totally inserted into the bore 3 of the hub. The needle is then pushed through the hub so that the knurled portion engages in the bore. The chemicals soften the plastics hub deforming it, so that after evaporation of the chemicals the needle and hub are non-displaceably engaged.
Patent GB-1057810-A (GB)
Title: Process for the production of a thyristor of the pnpn-type
IPC: H01L21/263
Filed: 1965-12-15
Abstract: 1,057,810. Semi-conductor devices. SIEMENS-SCHUCKERTWERKE A.G. Dec. 15, 1965 [Dec. 16, 1964], No. 53332/65. Heading H1K. In a PNPN thyristor, recombination centres are produced in the central P-type zone by diffusion and in the central N-type zone by irradiation; As shown, gold is diffused into the central P-type zone 13a during the alloying of an antimony-containing gold emitter electrode 17 to one face of a silicon body 1 which is then exposed to a beam of high-energy electrons, fast neutrons, protons, or gamma radiation.
Patent GB-1192858-A (GB)
Title: Brushless Direct-Current Motor
Inventor: WUTHERICH WERNER
IPC: H02P6/08
Filed: 1968-11-11
Abstract: 1,192,858. Control of motors. LICENTIA PATENT - VERWALTUNGS - G.m.b.H. 11 Nov., 1968, No. 53396/68. Heading H2J. A brushless motor has star-connected phase windings 2-5 which are opposed in pairs by 180 electrical degrees and are commutated by thyristors 7-10 associated with inductor 11 and battery 6. Quenching capacitors 12-15 are connected to the free ends of the windings, and diodes 16-19 connect the phase windings directly to the battery, in anti-parallel with the thyristors. When the thyristors 8, 9, are respectively made conductive and non-conductive, for example, voltage peaks appear in the windings 5 and 3. The voltage peak in the winding 3 opposes the battery voltage so that current passes through the diode 16 to the battery. This reduces the voltage peaks caused by commutation. The opposite phase windings may be wound in the same slots, the two windings being wound side by side with the wires parallel.
Patent GB-1368263-A (GB)
Title: Process for dyeing cellulose fibres
IPC: D06B11/00
Filed: 1971-11-19
Abstract: 1368263 Dyeing cellulose with azoic dyes FARBWERKE HOECHST AG 19 Nov 1971 [20 Nov 1970] 53836/71 Heading D1B Wound packages of cellulose yarn or sliver are injected with one or more aqueous solutions each comprising an alkaline substance and at least two azo coupling components of different diffusibility and are then impregnated with a weakly acidic aqueous liquor comprising one or more diazonium compounds derived from an aromatic amine. The preferred alkaline substance is sodium hydroxide and preferred coupling components are arylamides or aromatic or heterocyclic o-hydroxy carboxylic acid or of an acylacetic acid, or an aromatic or heterocyclic hydroxy compound or a compound containing an neolisable or enolized ketomethylene group in a heterocyclic ring. Preferably the package is allowed to dwell while moist after the injection and before impregnation, e.g. for 5 to 10 minutes. The impregnation may be effected at 20 to 50‹C for 10 to 45 minutes. Multi-colour effects are obtained.
Patent GB-1475559-A (GB)
Title: Cement compositions
IPC: C04B24/16
Filed: 1974-12-12
Abstract: 1475559 Cement compositions NITTO CHEMICAL INDUSTRY CO Ltd 12 Dec 1974 [13 Feb 1974] 53864/74 Heading ClH A cement composition contains cement and from 0À0003 to 0À02%, by weight of the cement, of an air-entraining water-reducing agent consisting of a higher secondary alcohol oxyalkylene sulphate of formula wherein R and R<SP>1</SP> are alkyl groups with the sum of the total number of carbon atoms of R and R<SP>1</SP> being from 10 to 20, n and m are each an integer of from 0 to 15. with n+m being from 1 to 15, and M is an alkali metal atom, an ammonium group or an amine group. The amine group may be mono-, di- or trimethylamine, mono-, di- or triethanolamine, butylamine or propanolamine. The composition may additionally include 0À5-7 parts by weight, per part by weight of the alcohol oxyalkylene sulphate, of an alkali metal salt of resin acid, a sulphonated ester salt of a higher primary alcohol or an alkylene oxide addition product thereof, an alkylbenzene sulphonate, a salt of a petroleum sulphonic acid, a fatty acid or proteinaceous substance, an organic salt of a sulphonated hydrocarbon, a polyalkyl aryl sulphonate, a sulphonate of a melamineformaldehyde condensate, a polycondensate of aminotriazine sulphonic acid, a polyamiopolycarboxylic acid compound, a ligninsulphonate, an oxycarboxylate, a polyoxyethylene alkylaryl ether, a derivative of carbohydrates and polyols or glyoxal. The cement may be Portland, blast furnace, alumina, silica, slag or regulated set cement, or a mixture thereof. The examples are directed to Portland cement compositions and concrete containing the higher secondary alcohol oxyalkylene sulphate and in some examples sodium resinate also.
Patent GB-1195076-A (GB)
Title: Conducting Thermoplastic Articles
Inventor: REDDISH WILSON
IPC: H01B1/24
Filed: 1967-11-28
Abstract: 1,195,076. Electrically conductive thermoplastics. IMPERIAL CHEMICAL INDUSTRIES Ltd. 18 Nov., 1968 [28 Nov., 1967], No. 54122/67. Heading C3P.  Electrically conductive organic thermoplastics articles having a grained structure comprise a non-conducting thermoplastics material incorporating a minor proportion by weight of a different organic thermoplastics material containing at least 20 weight per cent of one or more conductive fillers, and may be prepared by melt shaping mixtures of granules of the materials under conditions which avoid substantial intermixing in the molten state. Specified polymers are polyethylene, polypropylene, polybutene and polyvinyl chloride. Specified fillers are carbon blacks, graphite, iron, copper, tin, aluminium, germanium and doped silicon. In an example, articles are moulded from mixtures of granules of polypropylene and acetylene black filled polyethylene.
Patent GB-1375984-A (GB)
Title: Parachute
IPC: B64D17/14
Filed: 1971-11-23
Abstract: 1375984 Parachute AERAZUR CONSTRUCTIONS AERONAUTIQUES 23 Nov 1971 [23 Nov 1970] 54423/71 Heading B7G A parachute has a canopy with diametrically opposed slots 4, lobed gores 10 at the leading edge to prevent the formation of inwardly directed pockets caused by horizontal movement and a cut-out region E at the trailing edge to allow a corresponding escape of air at the rear. Halyards S 7 , S 18  attached to gores adjacent the slots 4 are adjustable by the parachutist to cause rearward airstreams F 1 , F 2 , to effect horizontal movement.
Patent GB-1372275-A (GB)
Title: Electrostatic spraying
IPC: B05B5/025
Filed: 1971-11-23
Abstract: 1372275 Electrostatic spray guns NORDSON CORP 23 Nov 1971 [23 Nov 1970] 54474/71 Heading B2F [Also in Divisions H1 and H2] In an electrostatic spray gun which has an electrode 32, a power pack is provided comprising a combined transformer and oscillator circuit 42B which converts a low voltage d.c. supply entering through a cable 46 to an intermediate high frequency a.c. supply, and a multipler circuit 42A which transforms the latter voltage to a high d.c. voltage for charging the electrode 32. Spray material is supplied by a pump to a nozzle 60 through a conduit 38, cavity 56 and a valve 61 which includes a ball 61B and a seat 61A, the valve being opened by retraction of a spring-biased plunger 58 under the action of a trigger 30 joined to the rear of the plunger. Operating the trigger 30 also causes a cylinder 86 to engage and close a switch 80 to energise the circuit 42B. In a modification the multiplier circuit (42A'), Fig. 8 (not shown), is located in a semi-circular cavity (54') which partly surrounds a central cavity (56') in the barrel of the gun.
Patent GB-1189176-A (GB)
Title: The manufacture of Gear Wheels by Cold-Forming Processes
Inventor: LAWRENCE JOHN OWEN NAPIER
IPC: B21H5/02
Filed: 1967-12-01
Abstract: 1,189,176. Rolling gear-wheels. VICKERS Ltd. 19 Feb., 1969 [1 Dec., 1967], No. 54795/67. Heading B3M. In a method of cold-forming gear teeth in the periphery of a cylindrical metal blank, an initial series of projections are pressed into the centre portion of the periphery, two further series of projections then being pressed into the two edge regions of the periphery to complete the teeth. The projections can be formed on a pair of rolling platens which are reciprocated on opposite sides of the blank. Each platen has a rolling face 1 on which a series of central projections 5 are provided, the projections increasing in height in groups from the leading end 6 of the platen. On a continuation 4 of the platen, further series of projections 2 are located. They extend inwardly from the platen edges towards a tapered central depression 8. Merging of the projections 2 into teeth 2<SP>1</SP> and 2<SP>11</SP> occurs at the trailing end of the platen, the last teeth serving to burnish the rolled blank. The projections 2 may be tapered inwardly (as shown) or of uniform cross-section.
Patent GB-1311704-A (GB)
Title: Collapsible reel
IPC: B65H75/14
Filed: 1970-11-18
Abstract: 1311704 Collapsible reels S L EIFRID 18 Nov 1970 [24 Nov 1969] 54808/70 Heading B8M A reel 16 comprises in combination two inflexible flat flanges 18 spaced apart in parallel planes normal to a common axis extending through centres of the flanges, a plurality of elongated fingers 19 of equal length connected at opposite ends to said flanges at angularly spaced points around the axis, the fingers 19 being formed of stretchable material and foldable transversely of their lengths to permit movement of the flanges toward each other, and a hollow axially inflexible tubular spacer 20 encircling the fingers 19 on their outer sides with its ends engaging opposed surfaces on said flanges to hold the flanges spaced apart, the axial length of the spacer 20 being correlated with and slightly greater than the relaxed length of the fingers 19 between the flanges to space the flanges a distance great enough to place said fingers under tension whereby the fingers exert a force urging the flanges against the spacer ends. The spacer 20 is preferably formed as two beric-cylindrical halves which engage radially inside a shoulder 21 provided in the inner surface of each flange. The fingers 19 are preferably formed as radial projections on a hub member 23, the hub member 23 being positioned adjacent the outer surface of the flange with the fingers 19 projecting through slots 24 in the flange. Alternative fingers are provided at their ends with tabs 28 and slots 29 respectively and the fingers are passed through the slots 24 so that opposed fingers can be interlocked by means of the tabs and slots. The flanges 18 are preferably made of laminated corrugated cardboard and the fingers 19 of resilient plastics material or metal permitting flexing of the fingers.  In a further embodiment, the shoulder 21 is omitted and a flat spacer support is positioned against the inner sides of each flange, each spacer support having radially extending slots to receive the fingers to support the inner side of the spacer at the spacer ends. In an alternative embodiment, the fingers are in the form of separate elements formed with a tab at each end, which tabs engage in slots provided on the flange face. In a further embodiment, the fingers are formed integrally with the flange and alternate round the flange with slots for the reception of the babs on the fingers of the opposed flange. To facilitate bending of the fingers without breaking at the line of bending, the fingers are preferably hinged along such lines by a coining operation.
Patent GB-1244338-A (GB)
Title: Sealing packages
IPC: B65D77/20
Filed: 1968-11-20
Abstract: 1,244,338. Seaming non-metallic sheet material. SWISS ALUMINIUM Ltd. 20 Nov., 1968 [22 Nov., 1967], No. 55085/68. Heading B5K. [Also in Division B8] A thermoplastic coated metal foil package having a tear tab, is closed by heat sealing, e.g. by a heated die, a layer of polyethylene to a layer of polypropylene. The coatings themselves may be of polypropylene and polyethylene or they may be of the same material, in which case a strip of the other material, or a metal foil strip coated with the other material, is located between the coatings. As shown, the package comprises polyethylene lined aluminium sheets 11, 12 welded to form a seam 13. A strip 14 of polypropylene or polypropylene coated aluminium foil is welded into the seam 13 along one edge or at one corner only if a limited opening is to be formed. The strip 14 may project beyond the seam 13 to replace tear tabs 15. In a modification, Figs. 1-3 (not shown), the package takes the form of a container body and lid having a tear handle and an annular sealing area.
Patent GB-1375240-A (GB)
IPC: G03B17/26
Filed: 1972-11-30
Abstract: 1375240 Cinematography EASTMAN KODAK CO 30 Nov 1972 [30 Nov 1971] 55354/72 Heading G2E In a super-8 type cine film cartridge having a ratchet 36 and pawl 34 to prevent clockspringing of film on the take-up spool 24, the spool 24 is rotatable and axially movable against the action of a spring 38 Fig.1 or spring fingers 51 Fig.3. By depressing the spool 24 from the position shown in Fig.1, 3, in which the teeth 44 of ratchet 36 are engageable by the pawl 34, thus moving against the action of spring 38 or fingers 51, the ratchet 36 and pawl 34 can no longer engage and the spool 24 may freely rotate in either direction. This depression of the spool 24 may be accomplished by the engagement of a camera with the cassette.
Patent GB-1280655-A (GB)
Title: Cement composition and method
IPC: H01J25/38
Filed: 1969-11-13
Abstract: 1280655 Cements RESEARCH CORP 13 Nov 1969 [27 March 1969] 55588/69 Heading C1H A freely workable expanding cement paste is obtained by grinding clinker with at least (in parts/part cement) 0À0025 of an aid to a surface area 6000-9000 cm.<SP>2</SP>/g., then mixing with at least 0À0025 of alkali metal or alkaline earth metal lignosulphonate, and finally with 0À2 of water containing at least 0À0025 of alkali metal carbonate. Specified grinding aids are Et 2 CO 3 , polyglycol derivatives, sulphonates, alkyl NH 4  salts, and a mixture of amine salt isopropanol and a sulphosuccinate.
Patent GB-1328365-A (GB)
Title: Porous plate made of metal fibres
IPC: B01D39/20
Filed: 1970-11-24
Abstract: 1328365 Sintered metal fibre plates MITSUI MINING & SMELTING CO Ltd 24 Nov 1970 [28 Nov 1969] 55813/70 Heading C7D A porous plate of metal fibres is made by felting the fibres (e.g. of Cu, Pb, Zn or alloys thereof) sintering and pressing the felted platelike mass in a mould with higher pressures being applied to some portions of the plate than to other portions to give the first portions a density of at least 70% of that of the metal and containing sintered bonds, the density of the rest of the mass being up to 60% of that of the metal wherein there is substantially no sinter bonding. The fibre diameter may be 30-150 microns. Uses:- Catalyst carrier, electric cell electrode, sound absorbent or filter for gases or liquids.
Patent GB-1199090-A (GB)
Title: Process for Etherification and Gelatinization of Starch
Inventor: HJERMSTAD ERLING TORMOD
IPC: C08B31/08
Filed: 1968-11-29
Abstract: 1,199,090. Cross-linked starch. PENICK & FORD Ltd. 29 Nov., 1968, No. 56704/68. Heading C3U. Starch in the form of cold-water insoluble, native, ungelatinized granules is cross-linked with either divinyl sulphone or an urea-formaldehyde resin under non-swelling conditions of temperature and alkalinity until it is sufficiently insolubilized to settle out after soaking at 5% concentration for 30 min. at 75‹ F. in 1% by wt. aq. NaOH, and the insolubilized product is etherified in a water suspension without swelling it to an unfilterable state with a monofunctional reagent to an ether group D.S. of at least 0À2 and is recovered by filtration. Optionally the product may be gelatinized by heating either in aqueous alkali of 0À1-4À0% by wt. concentration if divinyl sulphone was the cross-linking agent, or in aqueous acid at a pH below 5À0 when an U-F resin was used. Gelatinization is believed to break the cross-links. In examples the etherifying agents are: ethylene or propylene oxide, 1,2-epoxybutane, sodium monochloracetate, acrylonitrile, allyl chloride and methyl chloride.
Patent GB-1339903-A (GB)
Title: Method of producing fibrous sheet material
IPC: B29C48/08
Filed: 1970-12-01
Abstract: 1339903 Fibrous sheet KURARAY CO Ltd 1 Dec 1970 [19 Dec 1969 (2)] 57105/70 Heading D1R [Also in Division B5] A fibrous sheet is formed by laminating at least two sheets of an extruded film so that the angle between the directions of molecular orientation of adjacent sheets is from 60 to 120, and fibrillating the laminate by biaxially stretching it from two to four times. The film is formed from a mixture of 30 to 70 volume per cent of a crystalline polymer (1) and 10 to 30 volume per cent of another polymer (2) the polymer (1) forming an included phase in polymer (2) in the film. The sheets may be laminated by heating to a temperature higher than the initial flow temperature of polymer (2) and lower than the melting point of polymer (1). The stretched laminate may be heat treated at a temperature higher than that at which the stretching was carried out, and may be contacted by a solvent in which polymer (1) is insolvent and which extracts 50 to 99 volume per cent of polymer (2). Polymer (1) may be polyethylene, polypropylene, a polyamide or polyethylene terephthalate. Polymer (2) may be an ethylene copolymer, polystyrene, a styrene copolymer, a methacrylate resin, a polyamide or cellulose acetate.
Patent GB-1150380-A (GB)
Title: Platinum Group Metal Catalysts supported on Rare Earth Carbonates
IPC: C07C209/48
Filed: 1966-12-21
Abstract: 1,150,380. Reduction catalysts. E. I. DUPONT DE NEMOURS & CO. 21 Dec., 1966 [23 Dec., 1965], No. 57276/66. Heading B1E [Also in Divisions C2 and C5] Reduction catalysts comprise a platinum group metal or compound thereof supported on either a rare earth metal hydroxy carbonate carrier having a CO 3 " content of 20-95% or a mixture of a R.E. metal oxide and 80% R.E. carbonate. Specified are Pt, Pd, Os, Ir, Ru, Rlr and all the elements Atomic No. 57-71 inclusive + Y. Proprietary R.E. mixtures e.g. didymum are used in examples. The catalysts may be calcined to partially convert hydroxy carbonate to the corresponding oxide.
Patent GB-1254118-A (GB)
Title: Methods of etching oxide or nitride layers
Inventor: LEPSELTER M
IPC: H01L21/311
Filed: 1968-12-04
Abstract: 1,254,118. Coating with metals. WESTERN ELECTRIC CO. Inc. Dec.4, 1968 [Dec.8, 1967], No. 57509/ 68. Heading C7F. [Also in Division B6] A layer of oxide or nitride on a support is coated with a metal prior to inducing a chemical reduction in selected areas and etching away the reacted material in those areas. An embodiment involves depositing zirconium, titanium or hafnium on a silicon oxide or silicon nitride layer of a semi-conductor device by sputtering or vacuum evaporation, selectively irradiating with an electron or laser beam, and removing the resulting reaction products in those areas with dilute H. F. or hot cone H 2 SO 4  containing a trace of H. F. The irradiation results in the formation of a solid solution of silicon and the oxide or nitride of the coating metal in the coating metal.
Patent GB-1249678-A (GB)
Title: Improvements in or relating to methods of molding
Inventor: REDPATH JAMES DESMOND
IPC: C08J9/04
Filed: 1968-12-06
Abstract: 1,249,678. Moulding cellular articles. AMF Inc. 6 Dec., 1968, No. 57995/68. Heading B5A. [Also in Divisions A6 and C3] A method of forming a moulded article in a moulding machine, e.g. a reciprocating screw extruder comprises introducing into a thermoplastic polymer having a molecular weight in excess of 100,000 a blowing agent in an amount in a range of 0À01 to 5À0% by weight, based on the weight of the polymer, subjecting the polymer to increasing temperature and pressure to melt the polymer, the blowing agent being gaseous or forming a gas at the melt temperature, introducing the molten polymer into a mould and allowing the polymer melt to fill the mould to form the moulded article. The mould may be preheated or heated during or after formation of the article, at ambient temperature and atmospheric pressure.