baber/WOPTO huggingface dataset:
Patent GB-1186610-A (GB)
Title: Conversion of Ethylene to Alpha Olefins in the Presence of a Solvent
IPC: C07C2/30
Filed: 1967-11-08
Abstract: 1,186,610. Alpha-olefins. GULF RESEARCH & DEVELOPMENT CO. 8 Nov., 1967 [9 Nov., 1966], No. 50818/67. Heading C5E. Normally liquid alpha-olefins are produced by oligomerizing ethylene in the presence of a solvent and an organo-metallic or metallic hydride initiator, the ethylene being preheated to reaction temperature prior to mixing with the solvent and initiator, the reaction pressure being at least 35 kg./sq. cm. gauge, and the solvent being present in an amount not exceeding 50 wt. per cent of the total reactor charge and comprising hydrocarbons having at least 18 carbon atoms, e.g. liquid product which is recycled. The reaction preferably takes place in an elongated tubular reactor immersed in a bath of pressurized boiling water, the first section of the tube being the ethylene preheat section. Many initiators are specified, triethylaluminium being preferred, and are stated to participate in the reaction, i.e. by a growth process.
Patent GB-1441516-A (GB)
Title: Fan jet aircraft having means for controlling rolling motion
IPC: B64C29/00
Filed: 1974-11-25
Abstract: 1441516 Controlling jet-propelled aircraft DORNIER SYSTEM GmbH 25 Nov 1974 [20 Dec 1973] 50935/74 Heading B7G An aircraft has a propulsion fan 14 housed in the forward part of a duct 18 formed by an annular wing 6, the duct being formed into laterally spaced sub-ducts 20, 22 by a nacelle 16 which houses the power plant for fan 14 and from which extends forwardly a pay-load nose cone 4. A pair of vertically pivoted flaps 30 are mounted on a hub 28 at the forward end of the nacelle and, as indicated by dotted position 30<SP>1</SP>, they may be pivoted laterally to effect a rolling control on the aircraft. Staggered vanes 24, 26 are arranged in the aft part of the duct for pivotal movement to deflect the fan airflow from vertical lift to forward flight directions.
Patent GB-1163774-A (GB)
Title: Multicountershaft Transmission
IPC: F16H57/023
Filed: 1966-11-15
Abstract: 1,163,774. Variable-ratio gears. EATON YALE & TOWNE Inc. 15 Nov., 1966 [20 Jan., 1966], No. 51205/66. Headings F2D and F2U. A divided-torque gear comprises two or more countershafts 46B, 61B designed to carry equal torque and respectively carrying pinions meshing freely floating gears selectively clutchable to an output, or input, shaft 372, the countershafts also having pinions meshing an input, or output, gear 42B. In order to equalize the torque between the countershafts the input shaft 41B may be floatingly mounted, or the input gear 42B may be radially movable with respect to the shaft 41B, being mounted on the shaft by way of an intermediate sleeve having short internal and external splines engaging the shaft and the gear. Alternatively, and as shown, the countershafts are rotatably mounted in a framework which is slidable relative to a main housing for the input and output shafts 41B, 372, the framework being slidable transversely of a plane containing the countershafts. Specifications 923,267 and 1,069,112 are referred to.
Patent GB-1405763-A (GB)
Title: Intrauterine contraceptive devices
IPC: A61F6/14
Filed: 1972-11-07
Abstract: 1405763 Intra-uterine contraceptive devices A H ROBINS CO INC 7 Nov 1972 51338/72 Heading A5R An intra-uterine contraceptive device 20 comprises a ring 22 formed by a nose portion 24 and a tail portion 26 joined by two side portions 28, 30, and a plurality of spurs e.g. 40, 42 with bulbous terminal portions extending outwardly from each of the side portions. The spurs are thickest in the direction perpendicular to the plane of the ring. The spurs have terminal portions 76 which are thicker than their waist portions 74 enabling the spurs to flex towards the ring. The .spurs are inclined towards the tail portion and decrease successively in length towards the tail portion. Thin webs e.g. 56, 58 are secured to the side portions and attached to adjacent spurs. The ring 22 is of a similar material and shape, and deforms in a similar manner to the ring (22) of Specification 1405762. A membrane 32 or (178) Fig 10, (not shown), may be provided similar to the membranes of the above-mentioned Specification. Apertures 34, 36 facilitate insertion of the device with a stick type inserter (80) Fig 9, (not shown). A plurality of rows of spurs may be provided on each side portion. The spurs may lie in or be inclined to the plane of the ring. The device (220) of Fig 11, (not shown), is provided with two rows of spurs arranged side by side eg. spurs (202, 210). The device (230) of Fig 12, (not shown), is provided with two rows of staggered spurs e.g. spurs (232, 240). The spurs may be provided with sphere-like knobs eg(92, 94) Fig 6, (not shown). The webs may protrude beyond the spurs and be unattached to the spurs. In alternative forms the ring is rectangular with rounded corners. A line may be moulded integrally with the device.
Patent GB-1164910-A (GB)
Title: Industrial Process Controller By-Pass Apparatus.
IPC: G05B9/03
Filed: 1967-11-13
Abstract: 1,164,910. Two-part couplings. FOXBORO CO. 13 Nov., 1967 [2 Dec., 1966], No. 51517/67. Heading H2E. [Also in Divisions G3 and H1] An apparatus for use with an industrial process control system comprises a plurality of process controllers mounted on an instrument panel and a controller by-pass unit separate from the process controllers, the arrangement being such that a process controller can be removed from the panel and the by-pass unit connected into the apparatus in its place. Each process controller 12 includes a high-gain solid state amplifier adapted to receive a deviation signal and produce a control signal which passes to a transducer 60 for operating valve 64. In order to remove one of the controllers 12 for effecting servicing or repairs without cutting off the control signals a by-pass unit 30 is mounted in the same panel, the unit being able to take over manual control of any one of the process valves. A two-element plug 32 secured to the end of a four-wire flexible spring-loaded cable 34 is normally retained in dummy receptacle 36 and when one of the controllers 12 is to be removed from the panel 10 the plug 32 is inserted in receptacle 38 beneath the controller to be removed. As shown in Fig. 2 when plug 32 is inserted in socket 38 plug tips 66, 68 engage contacts 42, 48 to establish connection to the controller output leads 52, 54 and to break the connection through inner contacts 44, 46 to transducer leads 56, 58, plug sleeves 70, 72 engaging outer contacts 40, 50 to establish connection to the transducer leads 56, 58. Before switching the by-pass unit over to the control of process valve 64 the voltage developed across resistor 76 by the control signal current from controller 12 is compared at deviation meter 74 with the voltage developed across resistor 80 by the manual signal from bypass unit 30. Knob 82 is operated to vary the manual signal until the deviation meter reads zero when the automatic to manual switch 102 is shifted to its manual position wherein the current from power supply 86 is switched from dummy load 98 to transducer 60. After this transfer the controller 12, now operating into dummy load 98, is removed from panel 10. When the controller 12 is again returned to the panel 10 a similar operation of comparing voltages is performed.
Patent GB-1211885-A (GB)
Title: Improvements relating to inductive windings
IPC: H01F27/34
Filed: 1967-11-15
Abstract: 1,211,885. Transformers and inductors. GENERAL ELECTRIC CO. 15 Nov., 1967 [22 Nov., 1966], No. 51991/67. Heading HIT The high voltage end of a transformer or other inductive winding 111 comprises coaxiallydisposed pancake coils 120-123, each coil comprising two spirally-wound, interleaved conductors and each conductor being of one or more strands, the or one strand of each of the conductors in the first two coils 120, 121 being interconnected to form a series circuit which traverses both these coils twice before proceeding to any further coils and which is such that it finishes its second traverse of the first coil 120 at a turn immediately adjacent either the radially outermost or innermost conductor turn, whilst the incoming high voltage lead 130 is connected to the turn immediately adjacent the innermost or outermost conductor turn respectively. Fig. 2 shows an arrangement using singlestranded conductors, but in another embodiment (Fig. 4, not shown) each conductor has two strands which are connected in respective series circuits, the two series circuits being connected in parallel.
Patent GB-1209478-A (GB)
Title: A method of making a blade for use in a fluid flow machine
Inventor: BRYANT RODNEY TRENCHARD
IPC: F01D5/28
Filed: 1967-11-16
Abstract: 1,209,478. Making turbine and like blades; welding by pressure. ROLLS-ROYCE Ltd. and IMPERIAL METAL INDUSTRIES (KYNOCH) Ltd. 13 Nov., 1968 [16 Nov., 1967], No. 52261/67. Headings B3A and B3R. [Also in Division F1] A method of making a turbine, compressor or like blade having a working portion and a root portion respectively made of different alloys comprises welding together blanks of the respective portions and then forging to the final blade shape. The weld may be formed by diffusion bonding or by resistance butt, pressure, flash or friction methods. In the latter case, the blanks are placed coaxially end to end and forced together whilst one is rotated at high speed. Each of the different alloys may be based upon a common metal, such as niobium. Thus the working portion may contain by weight 17% tungsten, 3À5% hafnium and 0À08% carbon and the root 10% titanium and 10% molybdenum, the balance of the alloys being niobium. Alternatively, the working portion may be a chromium based alloy and the root an alloy having lower temperature strength. The different alloys have similar coefficients of expansion to prevent fracturing at the joint. The whole of the working and root portions may respectively be made of the different alloys. Alternatively, the working and/or root portion may be made up of a number of parts which have been respectively made of different alloys.
Patent GB-1529838-A (GB)
Title: Rear projection screens
IPC: G03B21/62
Filed: 1975-12-23
Abstract: 1529838 Rear projection screen FUJI PHOTO FILM CO Ltd 23 Dec 1975 [26 Dec 1974] 52730/75 Heading G2X [Also in Division C5] A rear projection screen comprises a lightdiffusing layer of wax mixed with 0À1-80 wt. per cent (based on the wt. of wax) of a polymer which increases the mechanical strength of the wax. The wax layer is preferably 0À2-2À0mm thick and may be self-supporting or laminated to a transparent support (preferably coloured), e.g. using a transparent adhesive. The wax may be natural, petroleum or synthetic (e.g. animal, plant, paraffin, microcrystalline, polyolefine or polyalkylene oxide wax). The polymer may be rosin, a rosin derivative or a terpene, terpene phenol, phenolic, xylenic, petroleum, cumarone-indene or styrene resin, ethylenevinyl acetate copolymer, polyisobutylene, polybutene and atactic polypropylene; the wax may additionally contain an antioxidant, U.V. absorber and/or colourant. One or both surfaces of the wax layer may be mat or have an optical element surface structure (e.g. lenticular, Fresnel or fly-eye lens structure).
Patent GB-527717-A (GB)
Abstract: 527,717. Ignition systems. NAPIER & SON, Ltd., D., and RAMSAY, F. R. F. April 13, 1939, No. 11145. [Class 7 (iv)] At starting current is supplied to the primary windings on one or a pair of magnets A, B. A battery energizes a trembler-coil D and closes an electromagnetic switch C, in shunt with the coil D, for establishing connection with the magnets. The switch C may be mounted at the upper end of the coil D, the contacts being mounted on a spring blade carrying an armature which is sufficiently heavy to remain in contact with the core of the transformer in spite of the intermittent nature of the current due to interruption at the buzzer contacts F. Specification 514,494 is referred to.
Patent GB-1111650-A (GB)
Title: Coating media for underfloor protection of motor vehicles and manufacturing processes
IPC: C09D195/00
Filed: 1966-11-25
Abstract: Emulsions suitable for undersealing motor vehicles comprise 1-9% of a specified clay and 20-70% of bituminous material dispersed in an aqueous phase of pH 6-8.  The clay is an aluminium magnesium hydrosilicate, e.g. a paligorskite or attapulgite, and has a mean particle size of 0.1m , a specific surface area of 210 sq.m./g.m. and needle-shaped crystallites. The bituminous material may be a petroleum distillate. Preferably 15% graphite is included in the composition. Additional materials which may be present are wetting agents e.g. sodium tripolyphosphates, adhesive agents e.g. organic amines, corrosion inhibitors e.g. fatty amine amide compounds, oleyl sarcoside, and sodium nitrate, and in the Examples (1) isopropyl alcohol (2) isopropyl alcohol and KOH are additionally present.
Patent GB-1171946-A (GB)
Title: Improvements in or relating to Sliding-Clasp Fasteners.
Inventor: POREPP HANS
IPC: A44B19/40
Filed: 1966-11-30
Abstract: 1,171,946. Sliding clasp fasteners. H. POREPP. 30 Nov., 1966 [30 Nov., 1965], No. 53725/66. Heading E2S. A sliding-clasp fastener includes two stringers each comprising a carrier tape 3 and a filament of plastics material in the shape of a serpentine of which the return bends on one side have coupling heads and constitute links each of which, viewed along the length of the serpentine, has a shape of a figure eight that is split with the ends of the split being displaced longitudinally of the carrier tape and serving in the case of each intermediate link to couple the link to the adjacent links, said serpentine being secured to its carrier tape by stitching 4, 5. In one embodiment for each stringer, the stitches comprise two separate parallel seams. In another embodiment, for each stringer, the stitching is a double chain stitch seam having two parallel rows of stitches with a locking thread interlinking between the rows of stitches on that side of the serpentine not in contact with its carrier tape. In a modification, a cover strip or cord is disposed on each row on the side facing away from the carrier tape and secured by the stitching.
Patent GB-1274272-A (GB)
Title: Improvements in or relating to propionic acid derivatives
IPC: C07C47/277
Filed: 1969-05-21
Abstract: 1,274,272. Naphthalene derivatives. SYNTEX CORP. 21 May, 1969 [30 July, 1968], No. 54042/71. Divided out of 1,274,271. Heading C2C. Novel 2 - (5<SP>1</SP> - Y - 6<SP>1</SP> - methoxynaphth - 2<SP>1</SP>-yl) -  propylene oxides, where Y is a hydrogen or halogen atom, are prepared by reaction of a 5 - Y - 6 - methoxy - 2 - acetylnaphthalene with dimethyl-sulphonium methylide or dimethyloxosulphonium methylide, and may be heated, optionally with Lewis acid to give 2-(5<SP>1</SP>-Y-6<SP>1</SP>- methoxynaphth - 2<SP>1 </SP>- yl) - propionaldehydes, which are novel when Y is a halogen atom and may be oxidized to give 2-(5<SP>1</SP>-Y-6<SP>1</SP>-methoxynaphth-2<SP>1</SP>-yl)-propionic acids, which are novel when Y is a bromine or iodine atom.
Patent GB-1372488-A (GB)
Title: Dispenser for discrete material
IPC: A21C9/04
Filed: 1973-08-08
Abstract: 1372488 Dispenser for discrete material BURTON'S GOLD MEDAL BUSCUITS Ltd 8 Aug 1973 [22 Nov 1972] 54114/72 Heading A2A A dispenser for discrete material consists of a hopper 1 having front and rear walls 2 and 3 and end walls 4 and 5 which are imperforate, the end walls at their lower end being arcuate and projecting downwardly beyond the lower ends of the side walls. The bottom of the hopper is closed by an arcuate perforate base 6. A rotary brush 7 extends axially throughout the length of the hopper, nests in the lower arcuate portion thereof and has its shaft 8 driven by an electric motor 9 through infinitely variable reduction gearing 10 and a belt or chain drive 11. The discrete material may for example, be flour, sugar, salt or flavouring and the dispenser may especially be used for dusting a continuous feed of sugar or flour confectionery.
Patent GB-1215960-A (GB)
Title: Hermetically-sealed through-passage assembly for transmitting motion through a nuclear reactor vessel wall
Inventor: CAVY CLAUDE
IPC: G21C13/02
Filed: 1968-11-15
Abstract: 1,215,960. Rotary shaft seals. COMMISSARIAT A L'ENERGIE ATOMIQUE. 15 Nov., 1968 [11 Dec., 1967], No. 54281/68. Heading F2B. A shaft 1 for transmitting rotary drive through a wall of a nuclear reactor vessel is centred by a fluid-film bearing 5 and axially located by a fluid-film thrust bearing 7 and sealed by means comprising two sets of labyrinth packing 11 and 13, one packing being located between the bearing 7 and the vessel exterior and the other between the bearing 7 and the vessel interior, an inert gas inlet 9 and shaft sealing rings 46 between the one packing and the vessel exterior, and two leakage ducts, one, 17, between the one packing and the gas inlet 9 and the other, 15, between the bearing 7 and the other packing. The duets 15 and 17 are connected to a source of suction. The shaft is housed in a bushing 33 which is sealed to a member 3 by metallic seals 35 and 37 from which any leakage is drained through ducts 39 and 41 respectively. The member 3 is secured to the nuclear reactor wall. Fluid, e.g. heavy water, is supplied to the bearings 5 and 7 via inlets 19 and 21 and inert gas is admitted to inlet 9 when transmitting drive. When the shaft is not in use, fluid supply to the inlets 9, 19 and 21 is cut off and the shaft is urged upward by the pressure in the vessel and is sealed by a metal seal 23, any leakage being drained off through a suction duct 25.
Patent GB-1173574-A (GB)
Title: Trioxane Copolymers
IPC: C08G2/00
Filed: 1966-12-06
Abstract: 1,173,574. Heterocyclic disulphonamides. FARBENFABRIKEN BAYER A.G. 6 Dec., 1966 [11 Dec., 1965 (2)], No. 54525/66. Heading C2C. [Also in Division C3] Compounds of the formula are obtained by reacting 2 mols. of an alkanolamine of the formula with 1 mol. of a disulphonic acid chloride of the formula Cl.So 2 .R<SP>1</SP>.So 2 .Cl to yield an intermediate of the formula and reacting the intermediate with an aldehyde or ketone at 0 to 130 C. in the presence of an acid catalyst, preferably in an inert solvent, to effect double ring closure. In the above formulµ, R is hydrogen, or an alkyl or halogenoalkyl radical of 1 to 6 carbon atoms, R<SP>1</SP> is a methylene chain with up to 20 carbon atoms or a bifunctional aromatic radical, and n is 1 or 2. In Example 1, 1,3-propanolamine is reacted with 1,4-butanedisulphonic acid chloride, followed by ring closure with a 40% formalin solution in dilute hydrochloric acid to yield 1,4-bis-[tetrahydro - 1,3 - oxazinyl - N - sulphonyl] - butane. In the other examples, the following compounds are prepared: (2) 1,4-bis-[tetrahydro-1,3-oxazinyl - N - sulphonyl] butane, (3) 1,3 - bis- [tetrahydro - 1,3 - oxazinyl - N - sulphonyl]- propane, (4) 1,4 - bis - [6 - methyl - tetrahydro - 1,3 - oxazinyl - N - sulphonyl] - butane, (5) 1,3 - bis - [tetrahydro - 1,3 - oxazinyl - N- sulphonyl]-benzene, and (6) 4,4<SP>1</SP>-bis-[tetrahydro - 1,3 - oxazinyl - N - sulphonyl] - diphenyl ether.
Patent GB-1527228-A (GB)
Title: Apparatus for launching or detecting waves of selected modes in an optical dielectric waveguide
IPC: H04B10/12
Filed: 1974-12-18
Abstract: 1527228 Light guides POST OFFICE 10 Dec 1975 [18 Dec 1974] 54764/74 Heading G2J Apparatus for launching, Fig. 1 or detecting, Fig. 2 radiation in selected modes in a core/cladding waveguide comprises a tapered section 3, 20 of waveguide, long compared to the wavelength, and a prism 6, 21 of R.I. greater than that of the cladding positioned adjacent the waveguide either at, but not overlapping, the tapered section 3, 20 or at least partially overlapping it. To launch radiation, Fig. 1, light from laser 10 passes through prism 16 and enters the waveguide core in a weakly bound mode which is transformed to a selected, strongly bound mode by travelling in the outwardly tapering section 4 before reaching the main waveguide part 5. To detect radiation, Fig. 2, radiation in a selected mode in waveguide 5 is transformed to a weakly bound mode by travelling in the inwardly tapering section 20 and is then extracted by prism 21 so as to impinge on defector 23. An index matching liquid 8 may be present between the prism and the waveguide. The waveguide may be of sodium borosilicate glass having an external diameter tapering from 70-100Ám down to 12-15Ám and a core diameter which tapers from 12Ám to 3Ám.
Patent GB-1287013-A (GB)
Title: Incorporating colour couplers into photographic emulsions
IPC: G03C7/388
Filed: 1969-11-10
Abstract: 1287013 Incorporating colour couplers into photographic emulsions ILFORD Ltd 22 Oct 1970 [10 Nov 1969] 54922/69 Addition to 1262653 Heading G2C A photographic colour coupler containing a carboxylic acid group is incorporated into a photographic emulsion by reacting an alkalimetal salt of the colour coupler with a watersoluble alkaline-earth metal or magnesium salt in an aqueous alkaline alcoholic medium in the presence of gelatin or another colloid compatible therewith and in the presence of an aqueousalkali-soluble synthetic polymer having an acid value of at least 50, to form a dispersion, reducing the pH to precipitate the polymer and incorporating the dispersion into a gelatine silver halide emulsion. In an example, the potassium salt of a coupler is reacted with CaCl 2  in the presence of gelatin and a methyl methacrylate/methacrylic acid copolymer. Other polymers specified are copolymers of methyl methacrylate with maleic anhydride, acrylic acid or itaconic acid, and a polyester of phthalic anhydride and gelatin.
Patent GB-1281977-A (GB)
Title: Method of producing composite bodies from loose heaps of metal-coated particles of fuel and/or fertile material for nuclear reactors
IPC: G21C3/62
Filed: 1970-11-19
Abstract: 1281977 Fuel elements KERNFORSCHUNGSANLAGE JULICH GmbH 19 Nov 1970 [3 Dec 1969] 55049/70 Heading G6C Nuclear fuel bodies are formed from metalcoated particles of fuel and/or fertile material, e.g. uranium or thorium oxide, having a diameter of several hundred microns, by compressing the particles in a vacuum at a pressure of 10<SP>-3</SP> to 10<SP>-5</SP> mm. Hg and a temperature of 800‹ to 2000‹ C. Suitable metals for the particle coatings are Mo, Zr, V and Nb, the coatings having a thickness of 2 to 10 Á. Under the above conditions, the particle coatings diffuse one into the other at their points of contact. The pressure applied is preferably several hundred pounds per cm.<SP>2</SP>, e.g. 300 pounds per cm.<SP>2</SP> The cavities between the individual particles of the fuel bodies allow throughflow of coolant, resulting in efficient heat removal.
Patent GB-1205652-A (GB)
Title: Coating materials
Inventor: MCMILLAN PETER WILLIAM
IPC: C03C8/24
Filed: 1967-12-04
Abstract: 1,205,652. Coating materials. ENGLISH ELECTRIC CO. Ltd. 3 Dec., 1968 [4 Dec., 1967], No. 55100/67. Heading C1M. A glassy material, for coating or bonding a material having approximately the same thermal expansion coefficient, comprises a mixture of at least one uncrystallized solder glass and at least one devitrified glass, in proportions such that it has a net thermal expansion coefficient of not more than 50 Î 10<SP>-7</SP> per ‹C. at room temperature, when fused into a solid mass, the devitrified glass or glasses being chosen to have a resultant coefficient of not more than 30 x 10<SP>-7</SP> per ‹C. The resultant coefficient is the average of the coefficients of each devitrified glass weighted according to their relative proportions. The devitrified glass(es) preferably constitutes 20-80% of the weight of the material. Preferably, the two glasses are powdered and mixed and coated on the substrate by suspending them in a suitable liquid, e.g. methylated spirit and ammonia, and heating to fuse the material. Glass, ceramics, glass-ceramics or other non-metallic substrates, e.g. silicon, may be coated or joined with the material. Examples describe the joining of tubes of borosilicate glass or fused silica articles.