baber/WOPTO huggingface dataset:
Patent GB-467601-A (GB)
Title: Improvements in or relating to magnetron circuit arrangements
IPC: H03D1/26
Filed: 1935-12-20
Abstract: 467,601. Valve detecting circuits. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE. Dec. 20, 1935, No. 35393. Convention date, Dec. 20, 1934. [Classes 39 (i) and 40 (v)] A magnetron, adapted to act as a rectifier, is brought approximately to selfexcitation and is operated in the spacecharge-current region of its characteristic. The magnetron comprises a cathode K, Fig. 1, and split anodes A1, A2 which are energized in opposite phase by the high-frequency signal. When operated at saturation, the variations in the separate anode currents Ja1 Ja2, Fig. 2, are equal and opposite, and the total anode current Je remains constant. By operating with a space charge, the variations in the separate anode currents Ja1 Ja2, Fig. 5 are rendered unequal and the total anode current Je varies in accordance with the low-frequency modulation of the high frequency signal. The space charge is obtained by reducing the anode voltage to 65 per cent of that required to produce saturation with a given field. The radius of the anodes A1, A2 is small enough to reduce the anode voltage for selfexcitation to be less than that for saturation. To prevent their radius being too small, the magnetic field may be increased to extend the space charge region of the characteristic into higher values of anode voltage. Such a detector may have its output fed back to a solenoid S, Fig. 7, at right-angles to the field solenoid so as to vary the angle of the field to vary the anode current and so obtain amplification of the low-frequency. A quenching frequency is introduced at P or may be generated by the magnetron, and the demodulated signal is taken off at Nf. A filter DQ may prevent high frequency current passing through the coil S.
Patent GB-757871-A (GB)
Title: Improvements in and relating to combustion chambers
IPC: F23R3/14
Filed: 1954-12-07
Abstract: 757,871. Generating combustion products under pressure. GENERAL ELECTRIC CO. Dec. 7, 1954 [Dec. 7, 1953], No. 35434/54. Class 51(1). In an air jacketed type of combustion chamber, such as a combustion chamber of a gas turbine engine, the flame tube 11 has a dome-shaped closed end portion 14 and inclined vanes 18 are inserted in an annular passageway 17 formed between the overlapping ends of the dome portion 14 and a cylindrical main portion of the flame tube for directing air from the space 16 between the outer wall and the flame tube into the dome-shaped portion so as to provide a swirling and reversing. vortex flow. Means 15 are provided to inject fuel into or near the flow. In Fig. 1 the air flow produced is indicated by the arrows 20, 21, 22, 23, 24, 28. Secondary and dilution air enters through orifices 19 in the flame tube wall, the air flow being indicated by the arrows, 25, 26, 27. Ignition means are disposed in the zone of the reversed flow of fuel and air mixture indicated at 24. In a second embodiment additional fuel is injected through two fuel injectors which inject through diametrically-opposed air inlet orifices in the flame tube wall, semi-circular air deflectors being disposed on the downstream sides of the orifices around the injectors. In another embodiment, the fuel injector 15 at the centre of the dome-shaped portion is replaced by pilot burner or flame igniter. In Fig. 6 the fuel injector in the end dome is omitted, the whole of the fuel being supplied through the two radially-disposed fuel injectors 15<SP>1</SP>.
Patent GB-746794-A (GB)
Title: Improvements in or relating to submarine escape apparatus
IPC: B63G8/40
Filed: 1953-12-21
Abstract: 746,794. Respiratory appliances. DAVIS, Sir R. H., and SIEBE, GORMAN & CO., Ltd. Dec. 21, 1953, No. 35541/53. Class 81(2). Submarine escape apparatus incorporating underwater breathing equipment has a valve permitting communication between the mouthpiece and the surrounding water so that, after initially filling his lungs, the user can equalise the pressure in them with the pressure of the surrounding water as he rises to the surface. The flexible member 26 is strapped over the mouth and an inhalation tube is gripped between the teeth. The two-way, manually operated valve 15 then provides communication either with self-contained breathing apparatus through a pipe 12 or with the surrounding water through a pipe 10, which is led over the shoulder or under the arm. Specification 626,872 is referred to.
Patent GB-784215-A (GB)
Title: Formulations for use in radiography
IPC: A61K49/04
Filed: 1953-12-22
Abstract: A radiopaque formulation comprises an aqueous solution of polyvinyl pyrrolidone and a water-soluble salt of an iodinated aliphatic, aromatic or heterocyclic compound, e.g. salts of alkali metals, trimethyl ammonium, mono-, di-or tri-ethanolamine salts, and salts of organic cations in general, having a viscosity after sterilization of 50 to 300 centipoises at 37 DEG  C. and containing 150 to 325 mg. iodine per gram; the polyvinylpyrrolidone having a viscosity coefficient of 20 to 33, a molecular weight range of 15,000 to 80,000 and an average molecular weight of about 20,000 to 40,000.  The formulation may have a viscosity after sterilization of 175 to 200 centipoises at 37 DEG  C. and contain 225 to 275 mg. iodine per gram; the polyvinylpyrrolidone having a viscosity coefficient of 30 to 33, a molecular weight range of 20,000 to 80,000 and an average molecular weight of about 40,000.  Specified salts are diethanolamine salt of 2,4-dioxo-3-iodo-6-methyl-tetra-hydro-pyridine-N-acetic acid; diethanolamine and diethylamine salts of 3,5-diiodo-4-pyridone-N-acetic acid; sodium ortho-iodohippurate; disodium N-methyl-3,5-diiodo-4-pyridoxyl-2,6-dicarboxylate, sodium mono-iodo-methanesulphonate, and alkali metal, ammonium and trimethylammonium salts of 2-acetylamino-2,4,6-triiodobenzoic acid.
Patent GB-1267814-A (GB)
Title: Improvements in and relating to needle bearings for example for universal joints
Inventor: BATT ROBERT STANLEY
IPC: F16C21/00
Filed: 1968-07-26
Abstract: 1,267,814. Bearings; universal Joints. TORRINGTON CO. Ltd. 22 July, 1969 [26 July, 1968], No. 35696/68. Headings F2A and F2U. A roller bearing 22, Fig. 1, has an outer race 28 having a closed end 30 and an end having a radially inwardly directed flange 32 on which is snap-fitted a washer 34. The latter has a radial portion 36, Fig. 2, which abuts the outer radial surface of the flange 32 and has a detent portion 38 having a radially outwardly directed surface 40 which engages the inner radial surface of the flange 32. The detent portion 38 may be provided with an inclined surface 42 which facilitates the assembly of the washer on to the flange. The rollers may be trunnion ended or may be spherical ended and provided with a cage 44, Fig. 4 (not shown). In modifications the radial portion 36 of the washer 34 may be replaced by a shorter radial portion 35, Fig. 3 (not shown), and the end 30 of the outer race 28 may be replaced by a shaped end 48, Fig. 5 (not shown). In an embodiment a universal joint has a central block 10 which is bored to receive shafts 12 and has a fork member 20 which is provided with arms 18 each carrying a bearing 22.
Patent GB-490892-A (GB)
Title: Improvements in and relating to tooth brushes
IPC: A46B9/04
Filed: 1937-12-24
Abstract: 490,892. Toothbrushes ; handles. HOLZBOCK, E. Dec. 24, 1937, No. 35721. [Classes 19 and 61 (i)] A toothbrush has an S-shaped handle a with the front part curved to correspond with the curve of the teeth and one or more bundles of bristles b rotatably arranged on the front part of the handle at right-angles thereto. The bristles b have inwardly inclined upper edges c and are fixed by a bolt f and plate h in rotatable cups g set on the handle, as shown in Fig. 3, or arranged in depressions on the handle. The latter has a thumb depression d set on an incline causing the user to tilt the brush through about 25 to 30‹. This result may also be obtained by making the handle part helical or twisting the part carrying the bristles with respect to the handle part, Fig. 6, or setting the bristle cups on an inclined ledge.
Patent GB-821618-A (GB)
Title: Improvements in or relating to boats hulls and other structures composed of reinforced plastic material
IPC: B63B7/06
Filed: 1955-12-13
Abstract: 821,618. Laminating. ALLDAY, G. J. Dec. 5, 1956 [Dec. 13, 1955; May 14, 1956], Nos. 35803/55 and 14990/56. Class 140. [Also in Groups XV and XXXIII] A boat or other structure comprises at least one layer of glass fibre material embedded in a thermo-setting resin material and one or more wood members totally enclosed and hermetically sealed by a covering of thermo-setting resin material. A " Gell " coat of synthetic resin material is applied to a mould, after two coats of polyvinyl alcohol have thoroughly dried, and a fine surfacing mat of fibreglass pressed into the resin. The first main layer of fibreglass is laid on to a thick coating of resin lay-up mix and wooden inner floor members 11, seat pads 12, gunwales 13 and buoyancy packs 14 wrapped in fibreglass are placed into position. A second layer of fibreglass is applied and additional strips placed on the wooden members and buoyancy packs and a second thick coat of resin lay-up mix is applied. The assembly is covered with a layer of reconstituted cellulose material to prevent adhesion to a rubber bag which is sealed to the assembly by clamping. A vacuum applied between the assembly and the bag forces the resin, after heating, through the glass fibre material. After a temperature of 200 F has been retained for 30 minutes, the material becomes hard and the hull with the hermetically sealed wooden structural members is allowed to cool before being removed from the mould.
Patent GB-1500675-A (GB)
Title: Process for producing carbon fibres
IPC: D01F9/22
Filed: 1976-08-27
Abstract: 1500675 Carbon fibres JAPAN EXLAN CO Ltd 27 Aug 1976 [1 Sept 1975] 35829/76 Heading C1A Carbon fibres are made by spinning an acrylonitrile copolymer containing at least 85 mol. per cent acrylonitrile and copolymerized with a carboxyl group-containing unsaturated monomer into filaments, washing the filaments with water, stretching them in hot acid aqueous solution at above 80 C. and at a-pH below 3À5, and thermally stabilizing, carbonizing and graphitizing the filaments. The copolymer may contain 0À1 to 10 mol. per cent of the carboxyl group-containing unsaturated monomer which is suitably acrylic or methacrylic acid, and nitric, phosphoric or sulphuric acid solutions may be used in the hot acid aqueous solution, stretching being effected therein suitably at stretch ratios of 2 to 8. A steam stretching and drying step, suitably at not less than 110 C. and at a stretch ratio of not less than 1À2 times, may be incorporated. Thermal stabilization may be effected by heating in a non-oxidizing atmosphere at 150 to 400 C., and carbonization in a non-oxidizing atmosphere at 800 to 2000 C. followed if desired by graphitizing in a non-oxidizing atmosphere at from 2000 C. to 3500 C. All three stages may be carried out under tension; the preferred oxidizing atmosphere is air and the preferred non-oxidizing atmosphere is nitrogen.
Patent GB-1469516-A (GB)
Title: Nitrochromeno pyrazole compounds their manufacture and use
IPC: B41M5/30
Filed: 1974-08-15
Abstract: 1469516 Nitro-chromenopyrazole colour formers CIBA-GEIGY AG 15 Aug 1974 [6 Sept 1973] 36023/74 Heading C4P [Also in Divisions C2 D2 and G2] Nitro-chromenopyrazole colour formers have the formula  wherein R 1  and R 2 , which may be identical or different, each represents a hydrogen atom, an alkyl radical with up to 12 carbon atoms, an alkoxyalkyl radical with from 2 to 8 carbon atoms, a cycloalkyl radical with 5 to 6 carbon atoms, a benzyl radical or a phenyl radical, and X and Y, which may be identical or different, each represents an alkyl radical with up to 12 carbon atoms, an alkoxy radical with up to 12 carbon atoms, an unsubstituted phenyl radical or phenyl radical substituted by one or more, identical or different, substituents selected from halogen atoms and alkyl radicals having up to 4 carbon atoms, nitro groups, unsubstituted amino groups and amino groups substituted by one or two, identical or different, substituents selected from alkyl radicals with up to 12 carbon atoms, acyl radicals with from 2 to 12 carbon atoms and benzyl radicals. These compounds, which are water-insoluble, give orange, orange-red or brown-orange colours, and may be used as pressure-sensitive materials encapsulated on the back of a transfer sheet, with the electron accepting substance coated on the front. The accepting substance may be, e.g. attapulgus clay, silton clay, silica or a phenolformaldehyde resin. The compounds may also be used in a thermoreactive copying material.
Patent GB-759937-A (GB)
Title: Improvements in or relating to travelling wave tubes
IPC: H01J25/40
Filed: 1953-12-29
Abstract: 759,937. Waveguides. WESTERN ELECTRIC CO., Inc. Dec. 29, 1953 [Dec. 30, 1952], No. 36054/53. Class 40 (8). [Also in Group XL (a)] A travelling-wave tube has a delay line comprising a rectangular sectioned waveguide having secured to one internal face thereof a hollow ridge formed with an array of slot resonators extending along the direction of wave propagation, the individual resonators being transverse to this direction and the beam is projected along the guide parallel with the wave. In one embodiment, Fig. 1, a rectangular waveguide 11 has a hollow ridge 12 brazed or soldered to the bottom wall thereof, and the ridge has #/4 slot resonators 14. Slit 15 provides a path for the beam, or alternatively there may be no slit. The envelope is completed by windows (not shown) in guide ends 20, 21 which are curved so that the ridge ends decrease in height for impedance matching. The lower wall of the guide has openings for the insertion of ridge 12 during assembly. The guide parts are of copper, or of silver-plated molybdenum. A magnetic focusing field is provided by polepieces integral with and at either end of the envelope, Fig. 3 (not shown). The mode used is a conventional mode, or preferably a spatial harmonic, of positive or negative phase velocity and the device may be an amplifier or oscillator. In another embodiment, Fig. 2 (not shown), wire of cylindrical or ribbon section is wrapped helically around a U-shaped channel; the wire lengths across the open end of the U are #/2. This structure forms a ridge fastened to the bottom wall of the guide, and the beam passes on both sides of the wires. Alternatively, lengths of wire can be laid across the open side of the U and secured thereto by a frame. The circuit may be used in a backward wave oscillator, Fig. 3 (not shown), when its end adjacent the collector is terminated by wedges of loss material on either side of ridge 32, and its end adjacent the gun is bent through 90 degrees and continued outside the envelope. Frequency modulation is effected by suitable modulation of the beam velocity. The waveguides need not be of rectangular cross-section. The devices may work at millimetre wavelengths. The design is discussed mathematically, and a numerical example is given.
Patent GB-1235046-A (GB)
Title: Endless conveyors
Inventor: POTT RICHARD
IPC: B65G17/12
Filed: 1969-07-17
Abstract: 1,235,046. Endless conveyers. WESTLAND GUMMIWERKE G.m.b.H. & CO. 17 July, 1969 [31 July, 1968], No. 36086/69. Heading B8A. An endless bucket conveyer comprises an endless belt 1 and a plurality of buckets each with corrugated side walls 2, eyelets 4 for securing the bucket to the belt, and transverse walls 3 inclined at 45 degrees to the belt in the direction of movement. The corrugations of the side walls are also inclined to the belt 1 in the direction of movement and the transverse walls of adjacent buckets are in abutment and are secured together in their upper regions. The belt 1 and the buckets are made from rubber or plastics material.
Patent GB-1056730-A (GB)
Title: Process for polymerizing isobutylene and catalyst composition therefor
IPC: C08F10/00
Filed: 1965-08-23
Abstract: Isobutylene homopolymers or isobutylene copolymers are prepared by polymerizing isobutylene or isobutylene and at least one monomer copolymerizable therewith in the presence of a catalyst comprising BF3 and an alkoxide or aryloxide of a Group VIII metal. Specified monomers are 1-butene, 2-butene, butadiene, isoprene, cyclopentadiene, styrene and a -methylstyrene.  Bulk or solution polymerization techniques are suitable for polymerizing or copolymerizing isobutylene.  Inert hydrocarbons or halocarbons are suitable polymerization media, e.g. ethane, propane, butane, pentane, hexane, petroleum ether or naphtha. Examples describe the polymerization of isobutylene alone or together with isoprene.ALSO:A polymerization catalyst comprises BF3 and an alkoxide or aryloxide of a Group VIII metal.  Examples describe the preparation of complexes containing Fe, Co or Ni.  The alkoxide or aryloxide may have the Formula M(OR)m in which R=alkyl, aryl, cycloalkyl, aralkyl, alkaryl. M is a Group VIII metal and m is the valency of M.
Patent GB-428433-A (GB)
Title: Improvements in the production of fibres and threads from glass, slag and the like meltable materials
IPC: C03B37/05
Filed: 1934-12-17
Abstract: 428,433. Making glass threads. NAAMLOOZE VENNOOTSCHAP MAATSCHAPPIJ TOT BEHEER EN EXPLOITATIE VAN OCTROOIEN, 57, Zeekant, The Hague. Dec. 17, 1934, No. 36141. Convention date, Dec. 18, 1933. Addition to 373,932. [Class 56] [See also Group V] Relates to apparatus, described in the parent Specification, for making threads or fibres of glass, slag, or like fusible material by flowing the molten material from an outlet b in a furnace on to the surface of a rapidly rotating disc d. The molten material is thrown outwards by centifugal force and forms fine fibres which settle around the disc. According to the present invention, jets of air, steam, or the like are directed on to the surface of the disc d in order to promote and accelerate the distribution and division of the liquid material. For this purpose. an annular pipe g is provided with a number of nozzles i which are inclined downwards and are preferably directed towards the edge of the disc d.
Patent GB-1002862-A (GB)
Title: Method and apparatus for producing self-sustaining multi-cell textile fabric sheath material
IPC: H01M4/76
Filed: 1963-09-16
Abstract: 1,002,862. Conveyer chains &c. L. A. BORIOLO. Sept. 16, 1963 [Sept. 21, 1962], No. 36320/63. Heading B8A. [Also in Division F2] The ends of heatable forming rods 42, which are inserted in transverse holes in a web of heat-shrinkable material (see Division F2) rest in recesses 52 formed between links of a chain conveyer, the links being pivotally interconnected by pins 51 which engage the teeth of sprockets 50.
Patent GB-356052-A (GB)
Title: Improvements connected with watch cases
IPC: G04B45/00
Filed: 1930-12-03
Abstract: 356,052. Watch cases. WACHTER, F., 4, East 28th Street, New York, U.S.A. Dec. 3, 1930, No. 36383. [Class 139.] A watch casing includes a transparent tubular member 17 forming the watch crystal and receiving the movement 18 edgewise, and has a frame 20 to carry the tubular member and a closure 21. The movement frame 18 is mounted on a closure 19 for the tubular member into which it may snap. The closure 19 may alternatively be secured to the frame 20 by screws or otherwise. The frame cover 21 may fasten with a snap or otherwise.
Patent GB-1124419-A (GB)
Title: Improvements in devices for the operation of setting members in housings for gear changing or the like
IPC: G05G5/06
Filed: 1967-08-09
Abstract: 1,124,419. Drilling machine details. METABOWERKE K.G. CLOSS, RAUCH & SCHNIZLER. 9 Aug., 1967 [10 Sept., 1966], No. 36557/67. Heading B3C. [Also in Divisions B4 and E2] A device for use in a hand-held drill for gear changing, comprises a gear changing sliding rod 3, and an operating knob 5, connected to the rod by a spring 4. The drill housing 2 has two recesses 11, 11<SP>1</SP>, into which a stop 9 is placed, in the two axial positions of the rod. Knob 5 has rocker portions 15 which slide along surfaces 16 in the housing. In operation, the knob is depressed so as to pivot about portions 15, and stop 9 is disengaged from recess 11. The knob and rod are shifted axially to change gear, and stop 9 snaps into recess 11<SP>1</SP>.
Patent GB-1346539-A (GB)
Title: Container
IPC: B65D77/20
Filed: 1972-08-07
Abstract: 1346539 Food package U WAGNER 7 Aug 1972 [6 Aug 1971] 36710/72 Heading B8C The lid 11 of a lidded container 10 having a peripheral flange 12 with rounded corners is provided with a peripheral bead for engagement with the flange 12 and a tab 22 on at least one end of the lid 11 by means of which the lid can be detached from an end of the container and slid off the container along the flange 12 at the sides thereof. The base of the tab may extend partly or wholly over the rounded corners of the container. Grooves 29 formed transversely of the lid extend between notches 27 in the beading to facilitate removal of the end of the lid from the flange.
Patent GB-854522-A (GB)
Title: Improvements relating to vertically-slidable doors
IPC: B66B13/06
Filed: 1956-11-30
Abstract: 854,522. Door operating mechanisms. GUTEHOFFNUNGSHUTTE STERKRADE A.G. Nov. 30, 1956 [Dec. 5, 1955], No. 36781/56. Class 65(1). A vertically slidable door is moved to the open or closed position by means of an endless chain, belt or other flexible member passing over two wheels mounted above the opening provided when the door is opened, at least one of the wheels being driven by an electric or other motor, and by a connection to the flexible member which is attached to the door at a point on or close to the vertical passing through the centre of gravity of the door. A vertically sliding door 1 is guided at its edges in U-section iron guides provided with guide rollers. An endless chain 2 passes over two guide wheels 3, 4, the wheel 3 being mounted vertically above the wheel 4 which is driven by an electric motor 8. One link 2a of the chain 2 is formed with a plate 10 to which is pivoted by a pin 11 an upper rod member of the connecting rod system 9. The rod member is laterally offset from the plane of the chain so that the door may be opened or closed without reversing the direction of rotation of the motor 8. The articulated connecting rod system 9 "gives" laterally and allows a short final run or lost motion for the link 2a. In a modification, the connecting rod system is arranged in the plane of the chain. In this case the motor 8 must be reversible.
Patent GB-1441762-A (GB)
Title: Method of supplying mould or die surfaces in chipless forming processes with a parting medium
IPC: B21C23/32
Filed: 1973-08-03
Abstract: 1441762 Injection moulding KLUBER LUBRICATION MUNCHEN KG 3 Aug 1973 [5 Aug 1972] 37090/73 Heading B5A [Also in Division C5] A parting agent for use in the injection moulding of plastics is micro-encapsulated. The microcapsules may be made to stick to the relevant surface by being fused thereto by heat, or by means of a binder. Mixtures of microcapsules that rupture at different temperatures or different pressures may be used to release the parting agent at different stages or places in the process, or microcapsules containing a coolant may be mixed with those containing the parting agent.
Patent GB-1454623-A (GB)
Title: Preparation of antimony glycoloxides electric timepiece
IPC: C07F9/90
Filed: 1974-08-23
Abstract: 1454623 Antimony glycoloxide N L INDUSTRIES Inc 23 Aug 1974 [24 Aug 1973] 37275/74 Heading C2C Antimony glycol oxide is made by reacting a mixture of one or more antimony triscarboxylates and at least 1À5 molar equivalents of ethylene glycol.