baber/WOPTO huggingface dataset:
Patent GB-1364679-A (GB)
Title: Direct current electrical machines
IPC: H02P6/14
Filed: 1971-07-27
Abstract: 1364679 Control of AC and DC motors W SCHADE 27 July 1971 [27 July 1970 30 July 1970 31 Oct 1970] 35100/71 Heading H2J A brushless electrical machine includes a plurality of armature windings, e.g. 1, 2, sequentially energized through respective thyristors 9, each thyristor being controlled by a respective trigger circuit which comprises a transformer 8 whose secondary winding is connected to the gate electrode of the thyristor and whose primary winding is connected in series with a diode 7, and a capacitor 5 connected in parallel with the diode and primary winding and arranged to be charged from a D.C. source when the preceding thyristor in the commutation sequence is rendered conducting, each thyristor being connected to a commutating capacitor 10 so that, in use, the thyristor is quenched when the next following thyristor in the commutation sequence is rendered conducting. The capacitor 5 is connected in series with the preceding thyristor across the D.C. supply for the machine. The diode 7 triggers at a predetermined voltage so that the switching frequency of the thyristors 9 and hence the speed of the machine are dependent on the supply voltage. Further control of the switching frequency of the thyristors is obtained by varying a bias voltage of the trigger diodes 7. The machine may operate as an induction motor or as a synchronous motor, the rotor in the latter case including either a permanent magnet or a D.C. energized coil. In a modification, Fig. 2 (riot shown), there is a thyristor at each end of each winding 1, 2, (3, 4) and the associated transformer has two secondary windings, each connected to a respective one of the two thyristors.
Patent GB-1274295-A (GB)
Title: A method of producing the heel and/or sole of a shoe
Inventor: GIANNINI MICHELE
IPC: B29D35/06
Filed: 1969-07-11
Abstract: 1,274,295. Moulding footwear. M. GIANNINI. 11 July, 1969 [12 July, 1968; 17 Feb., 1969; 16 June, 1969], No. 35119/69. Heading B5A. In a method of making a shoe sole and/or heel, sheet material 6 intended to cover a part of the external surface of the sole and/or heel is placed against a substantially vertical surface of a mould so that all the sheet material is substantially vertical, and moulding material is caused to take up the shape of the mould. In the example shown the moulding material is injected through an opening 10. The sheet material 6 may be located in the mould by means of pins 9 or thin metal blades 14 projecting from the walls of the mould. The sheet material may be covered by an adhesive on the surface to be bonded to the moulding material.
Patent GB-827463-A (GB)
Title: Polymerisation process
Inventor: JENKINS PHILIP ALDWYN
IPC: C08F110/02
Filed: 1955-12-07
Abstract: Catalysts used in polymerizing ethylene (see Group IV (a)) are formed by mixing a titanium, zirconium or vanadium halide with a calcium or barium compound of formula Ar-M-X, wherein Ar is an aromatic residue such as phenyl, tolyl or naphthyl, X is a halide atom and M is the metal.  Specified catalyst components are the tri- and tetra-chlorides of titanium, zirconium and vanadium, and phenyl calcium and barium iodides.  Catalyst may be formed in situ in the polymerization vessel, e.g. in an inert medium such as pentane, hexane, cyclohexane, tetrahydronaphthalene, decahydronaphthalene, paraffins, benzene, toluene, xylene, dichlorobenzene, chlorinated naphthalene and mixtures thereof. Oxygen, carbon dioxide and water are preferably excluded. Catalyst residues may be removed after polymerization, with ethyl alcohol and hydrochloric acid.  In the Provisional Specification the titanium, zirconium or vanadium compound may be an oxyhalide, complex fluoride, oxide, hydroxide, alcoholate, acetate, benzoate, or acetoacetate.  Specification 827,464 is referred to.ALSO:Ethylene is polymerized with a catalyst formed by mixing a titanium, zirconium or vanadium halide with a calcium or barium compound of formula Ar-M-X, wherein Ar is an aromatic residue such as phenyl, tolyl or naphthyl, X is a halide atom and M is calcium or barium.  Specified catalyst components are the tri- and tetra-chlorides of titanium, zirconium and vanadium, and phenyl calcium and barium iodides.  The polymerization may be batchwise or continuous and is preferably effected in an inert medium such as pentane, hexane, cyclohexane, tetrahydronaphthalene, decahydronaphthalene, paraffins, benzene, toluene, xylene, dichlorobenzene, chlorinated naphthalene and mixtures thereof. Oxygen, carbon dioxide and water are preferably excluded. Ethylene may be added during the polymerization and, if desired, the catalyst may be formed in situ.  Catalyst may be destroyed and the product purified by treatment with ethyl alcohol and hydrochloric acid.  The products are linear polymers which may be formed into films, fibres and moulded articles.  In the Provisional Specification the titanium, zirconium or vanadium compound may be an oxyhalide, complex fluoride, oxide, hydroxide, alcoholate, acetate, benzoate or acetoacetate. Specification 827,464 is referred to.
Patent GB-1494416-A (GB)
Title: Adjustment of rolling error in a spur gear wheel
IPC: F16H57/00
Filed: 1975-08-26
Abstract: 1494416 Measuring gear-wheels GETRIEBEFABRIK COSWIG VEB 26 Aug 1975 [30 Aug 1974] 35164/75 Heading G1M A rolling error spur gear testing device, Fig. 1, comprises a motor rotated support 9 on which the spur wheel 2 to be tested is mounted, a master gear 4 mounted on a slidable carriage 3 and provided with a brake 6 to ensure single flank engagement of the gear teeth without backlash, and measurement transmitters 7 associated with recorders 8. By controlled adjustment of the wheel 2 relative to the support 9 the pattern of deviations due to eccentric drilling of the spur wheel and skew clamping may be reduced from the error pattern in Fig. 2 to that of Fig. 3a and an equal pattern of error is obtained for each 180 degrees phase of rotation of the wheel 2. When the error has been reduced to an acceptable pattern a central recess 11 is ground into the wheel 2, Fig. 4, to be coaxial and concentric with the adjusted axis of rotation of the wheel 2 the grinding being carried out while the wheel 2 is held in its adjusted position.
Patent GB-1007240-A (GB)
Title: Harvester
IPC: A01D45/26
Filed: 1964-08-27
Abstract: 1,007,240. Crop harvesters. W. W. PORTER. Aug. 27, 1964 [Dec. 2, 1963], No. 35169/64. Heading AlF. A harvester for brussel sprouts comprises a circular saw 82 rotating about a vertical axis and cooperating with an oppositely rotating disc 78 to cut the stalks of the sprouts which are fed by laterally disposed conveyers with fingers 148 on to a conveyer 160. The sprouts are then placed on a transverse conveyer 20 by operators standing on platforms 196, 198. A tiltable platform 242 supports crates into which the sprouts are fed by the conveyer 20. The cutter frame is movably supported from the main frame by rams 64 and a ground skid 400 is adjustable to control the height of cut. The cutter assembly is driven from a shaft 47 through gear-box 210, shaft 216 and gear-box 90 but the other moving parts may be driven by by separate hydraulic motors.
Patent GB-1282825-A (GB)
Title: Method of making relief printing plate
IPC: B41C3/06
Filed: 1970-07-21
Abstract: 1282825 Thermographic production of printing plates BURROUGHS CORP 21 July 1970 [4 Aug 1969] 35170/70 Addition to 1235537 Heading G2C [Also in Division B6] Relief printing plates are prepared by (a) coating a base sheet with a heat-sensitive polymer dispersion, (b) pre-gelling the dispersion to form a stable coating, (c) either (i) encoding ir. absorbing indicia on the base sheet or (ii) contacting the dispersion with a master having ir. absorbing indicia thereon, (d) exposing to near ir. radiation to fuse the dispersion in the indicia areas leaving the background areas unfused, (e) placing a ir. absorbing medium over the dispersion, (f) exposing to ir. radiation so that the previously unfused areas fused to the ir. absorbing medium, and (g) separating the medium to remove the previously unfused areas of the dispersion.
Patent GB-1407202-A (GB)
Title: Under water connector
IPC: H01R13/523
Filed: 1971-07-27
Abstract: 1407202 Two-part couplings BRITISH PETROLEUM CO Ltd 26 July 1972 [27 July 1971] 35196/71 Heading H2E An electrical connector for underwater use comprises a plug 15 for connection to a socket 16, the plug 15 having at least one contact member 2, and a channel through the plug body for a liquid sealant to flow therethrough, to adjacent the contact member, the plug body further comprising a positioning member 5 to co-operate with a corresponding member 7 in a socket 16 to facilitate correct alignment of plug and socket before uniting. In one embodiment, contacts 1 in the form of metallic sleeves surrounded by rubber sleeves 13 are engaged by contact members 2 to form an electrical connection, spigot 5 being located in socket 7, guide peg 6 ensuring an accurate fitting. Silicone grease is squeezed through part 10 through channel 14 to fill any gaps within the plug and socket. A switch 5 only allows passage of current through the contact members when magnet 9 actuates reed relay 8, that is when the spigot 5 is fully inserted into locating socket 7. An O-ring 12 fitted within a retaining ring 11 holds the joint firm. When the connection is to be broken, more grease is hydraulically forced through channel 14 to force the plug and socket apart, and switch 5 operates to isolate the circuit. The plug and socket, if desired may then be separated manually by pulling and twisting the plug away from the socket. A further protection against sea water may be provided by bellows 17 and 18, which have perforations to allow movement of contacts 2 therethrough. These perforations are sealed with grease as the assembly is twisted and so provided watertight protection of the mating surfaces.
Patent GB-915005-A (GB)
Title: Improvements in or relating to leaf springs and their manufacture
Inventor: MORRISON CHARLES ATHOLL
IPC: C21D9/02
Filed: 1960-10-14
Abstract: 915,005. Making leaf-springs; curving. TOLEDO WOODHEAD SPRINGS Ltd. Sept. 21, 1961 [Oct. 14, 1960], No. 35217/60. Classes 83 (2) and 83 (4). A method of making a hardened, tempered and cambered leaf-spring comprising hardening and quenching a shaped spring steel plate, reheating it to a tempering temperature and passing it lengthwise through bending rolls to impart the camber. A spring steel plate X is traversed on a series of endless conveyers through a hardening furnace A into an oilquenching bath B, through a temperating furnace C, between straightening and descaling rolls 5 and through a cambering machine E. The machine E comprises a pair of driven rolls 8, 18 having band-shaped peripheries, an adjustable guide bed 39 and an adjustable inclined deflector assembly 43 having a tungsten carbide or hardened roller contact member 46. The roll 8 is detachably secured to the journalled shaft 9 and the roll 18 attached to a shaft 19 journalled in a trunnion block 27 and tiltable in a bearing 20 vertically adjustable in guides 21 by a wedge 24. A lever 31 pivoted at 32 connects the trunnion assembly with the pneumatic cylinder 35 pivoted at 36, lead applied to the cylinders is transmitted through the linkage causing the shaft 19 to pivot in the bearing 20 and the roll 18 to approach the roll 8. A combined relief and reducing valve 49 comprising an adjustable spring-loaded valve plate 52, a secondary pressure chamber 57 having a supply outlet 58 to the cylinders and a spring- loaded relief plate 62 maintains a constant pressure supply to the cylinders regardless of the displacement of the pistons 50 due to variation in plate thickness. A final tempering operation may be carried out in a furnace after cambering. An hydraulic load applying arrangement may be used.
Patent GB-1139407-A (GB)
Title: Aminodiphenyl-indolyl-methane dyestuffs
Inventor: RAUE RODERICH
IPC: C09B11/26
Filed: 1967-08-01
Abstract: 1,139,407. Aminodiphenyl-indolyl-methane dyestuffs; inks. FARBENFABRIKEN BAYER A.G. 1 Aug., 1967 [3 Aug., 1966], No. 35323/67. Headings C4A and C4P. The invention comprises aminodiphenylindolyl methane dyestuffs free from sulphonic and carboxylic acid groups of the general formula wherein R is H, alkyl, aralkyl, aryl, N0 2 , CN, carboxylic acid ester, optionally N-substituted carbonamide, acyl, alkylsulphonyl or arylsulphonyl; R 1  is H, alkyl, cycloalkyl, aryl, aralkyl; R 2  is H, alkyl, cycloalkyl or aralkyl; R 3  is H, alkyl or aryl, carboxylic acid ester, optionally N-substituted carbonamide or alkoxy; R 4  is H, alkyl, cycloalkyl, aryl or aralkyl and X is an anion, the dyes being optionally further substituted by non-ionic substituents. They are prepared by condensing (i) a 4-aminobenzophenone with an indole, (ii) a benzoyl 1 indole with an aniline derivative or (iii) a benzanilide compound with an aniline derivative and subsequently an indole compound, at 40- 160‹ C. in presence of an acidic condensing agent e.g. hydrochloric or sulphuric acids, phosphorus oxychloride, thionyl chloride, phosgene, zinc, aluminium or tin chlorides, or p-toluene sulphonic acid optionally in presence of an inert solvent. The dyestuffs may be used to dye polymers or copolymers of acrylonitrile (see also Specification 1,139,408), leather, tannin treated cotton, cellulose acetate, polyamides and polyurethanes, lignin containing fibres, acid modified polyesters, in blue, green and red shades and for the production of pigments using anionic precipitants; and for colouring, writing and stamping inks and ball-point pastes. In Example 5, a stamping ink comprises by weight 60 parts glycerol, 20 parts water, 20 parts spirit and 2 parts of the dyestuff obtained by condensing 4-N,N-dimethylamino benzophenone with 1 -methyl-2-phenylindole.
Patent GB-877726-A (GB)
Title: Improvements in and relating to gear-finishing tool
IPC: B23F21/03
Filed: 1957-11-13
Abstract: A gear-finishing tool comprises a gear-like body in which at least the surface portions of the teeth to a substantial depth are formed of a rigid moulded synthetic resin compound in which are embedded abrasive particles, some of which have portions exposed at the surfaces of the teeth, the abrasive-containing material comprising 100-150 parts of abrasive particles, 15-25 parts of hardener and 100 parts of a 'composition' consisting of 100 parts of epoxy resin and 25-100 parts of fine grit abrasive filter. Alternatively, the 'composition' consists of 100 parts of epoxy resin and 35-130 parts of filler; the filler may include 10-30 parts of short glass fibres. In an example, the abrasive-containing material comprises:- <TABS:0877726/IV (a)/1>
Patent GB-1495683-A (GB)
Title: Fast reactor having a structure for reducing convection currents of coolant within the reactor
IPC: G21C15/00
Filed: 1975-08-27
Abstract: 1495683 Reducing coolant convection currents in reactors COMMISSARIAT A L'ENERGIE ATOMIQUE 27 Aug 1975 [3 Sept 1974] 35426/75 Heading G6C In a fast reactor comprising a core 18 surrounded by an inner tank 30 contained within the primary vessel 12, a hollow, metallic, annular structure 34 with perforated walls is placed in the space between the core and the inner tank to reduce convection currents in this region. The structure is spaced slightly from both the wall of the inner tank 30 and the external surface of the neutron shield 28 of the core, and has horizontal and vertical internal baffles (44, 48, Fig. 2, not shown).
Patent GB-788824-A (GB)
Title: Improvements in or relating to horizontally polarized directional antennas
IPC: H01Q13/28
Filed: 1955-12-09
Abstract: 788,824. Aerials. COMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL. Dec. 9, 1955 [Dec. 14, 1954], No. 35501/55. Class 40 (7). An antenna system for radiating horizontally polarized directional energy comprises a plurality, preferably 6 or 8, of rectangular conductive plates of length greater than twice the operating wavelength, #, and width between #/2 and #. The plates are arranged horizontally and parallel to each other and so spaced apart that the sum of two consecutive spacings is approximately #. Means for exciting the plate structure are arranged opposite one end-plate 1a and may consist of a horn 5 fed by means of a waveguide; the mouth of the horn is arranged to be between #/4 and #/2 from the plate 1a and substantially parallel thereto. The energization of the horn is such that the electric field E is parallel to the longer sides of the horn mouth and plates. The axis of the radiation pattern is parallel to the plates and the pattern may be reduced to a single main lobe by the provision of a vertical sheet-metal reflector 6 spaced #/2 behind the plates. The gain of the system may be improved by tilting the mouth of the horn to face slightly towards the reflector 6 (Fig. 3, not shown). The horn feed may be replaced by a dipole arranged parallel to the longer plate sides and mounted centrally in, and at right-angles to, the horizontal focal axis of a " cheese " reflector (Fig. 1, not shown). In another modification energization is effected by a plurality of dipoles 9 placed above a reflector 5<SP>1</SP> (corresponding to the plane of the reflector mouth in previous embodiments) and energized in phase. This embodiment has high directivity and is suitable for metre wavelengths. The plates may be mounted on supports 2b and 2d and the spacing between adjacent plates and the precise plate width determined empirically to give the required directional pattern.
Patent GB-964195-A (GB)
Title: A process for the polymerisation of polymerisable water-insoluble organic compounds containing at least one ch=c< group
IPC: C08F2/32
Filed: 1962-09-18
Abstract: Water-insoluble compounds containing at least one CH2=C< group are polymerized by emulsifying them in water to form an emulsion of the water-in-oil type by means of a graft copolymer obtained by grafting a styrene hydrocarbon on to from 10 to 500%, by weight of the styrene, of a water-soluble polyalkylene oxide containing polyethylene oxide units and having a molecular weight of at least 300, the reversed emulsion containing from 5 to 4,000% by weight of water, based on the weight of monomer, and polymerizing the emulsion with the aid of form 0.1 to 5% by weight (based on the weight of monomer if monomer-soluble, or the weight of water if water-soluble) of a free radical-forming compound.  Monomers specified are styrene, alkyl styrenes, vinyl acetate and propionate, methyl, ethyl, n-propyl, n-butyl and cyclohexyl acrylates and methacrylates, vinylidene chloride, divinyl and trivinyl benzene and acrylonitrile, and mixtures thereof with one another and with unsaturated polyesters, maleic anhydride, maleic and fumaric acid half-esters, glycol dimethacrylate, triallyl cyanurate and triacrylyl-s-perhydrotriazine. Catalysts specified are azodiisobutyronitrile, cyclohexanone benzoyl and lauroyl peroxides, tert.-butyl, cumene and p-menthane hydroperoxides, combinations of peroxides with amines and metal compounds, e.g. cobalt naphthenate, and alkali metal persulphates and combinations thereof with pyrosulphites, formaldehyde sulphoxylate and trethylamine.  The examples describe the use of styrene/polyethylene oxide and styrene/poly(ethylene oxide-co-propylene oxide) graft copolymers in the reversed emulsion polymerization of (a) styrene + a polyester derived from maleic and phthalic acids and butanediol-1, 3; (b) divinyl benzene + the mixture as in (a); (c) methyl acrylate + ethyl acrylate + the mixture as in (a); (d) divinyl benzene + maleic anhydride + the mixture as in (a); (e) methyl methacrylate; (f) acrylonitrile; (g) vinyl acetate + methyl methacrylate; (h) vinylidene chloride + ethyl acrylate; (i) styrene + divinyl benzene; and (j) styrene.  The Specification describes the preparation of graft copolymers by polymerizing styrene, or a mixture thereof with alpha-methyl styrene, in a tert.-butanol or methanol solution of polyethylene oxide or an ethylene oxide/propylene oxide copolymer, in the presence of benzoyl peroxide or a mixture thereof with dicumene peroxide.  Specification 928,621 is referred to.
Patent GB-1079078-A (GB)
Title: Improvements in manufacture of refractory shell molds
IPC: B22C13/08
Filed: 1965-08-19
Abstract: 1,079,078. Refractory slurries formed on patterns. HOWMET CORPORATION. Aug. 19, 1965 [Sept. 21, 1964], No. 35609/65. Heading B5A. A refractory-mould forming machine for automatically producing sanded refractory slurry coatings on patterns comprises a rotatable mount 25 with indexing means for turning the mount through a series of hold positions 22, one rotatable spindle 16 for each pattern 17 which may be pivotally fixed on the mount, radially disposed thereon, and adapted to hold the associated pattern at the outer end of the spindle, at least the outer end of each spindle being translatable dip tanks for refractory slurry 29 and sanding material 28, each located adjacent to the mount at different hold positions of the mount, drive means for rotating each spindle, means for displacing at least the outer end of the spindle when adjacent to the dip tanks to dip the pattern thereinto. The spindles may be spaced at uniform angular intervals corresponding to the angular spacing between hold positions. The spindles may be individually rotatable by a motor and are preferably rotated continuously, preferably between 5 and 25 r.p.m. The sanding material may be fluidized in its dip tank so as to apply sanding without disturbing the slurry coating. There may be a track 44, Fig. 12, (not shown), surrounding the mount on which the spindles are supported by rollers 39A except where it is indexed adjacent the dip tanks, where lift means 37, are provided on to which each spindle support rolls. The pattern on the spindle may be lowered into the slurry to an angle of 20- 50 degrees, preferably 30 degrees, below the horizontal and then raised to an angle of 20-50 degrees, preferably 30 degrees, above the horizontal. There may be means for hardening the slurry coating between the sanding material dip tank and the slurry dip tank, preferably comprising an arcuate chamber 64 containing a gas conducive to hardening the coating, extending concentrically around the greater part of the mount. The chamber preferably has a pair of extended resiliently engaged displaceable seating members 91, 92 covering a slot around the inner chamber wall to permit the spindles to project through and move along the slot without substantial escape of gas, and entry and exit doors 85 at each end of the chamber adapted to open before and close behind each pattern as it is carried into and out of the chamber.
Patent GB-367893-A (GB)
Title: Surface cooling elements for electro transformer and like tanks
IPC: H01F27/02
Filed: 1930-11-27
Abstract: 367,893. Electric-transformer and like tanks with radiator elements. STOLTENHOFF, C. E. F., 6, Furst Pucklerstrasse, Lindenthal, Cologne, Germany. Nov.27, 1930, No. 35733. [Classes 29 and 64 (iii).] A radiator element traversed by an air tube 1 and with top and bottom connections 2, 3 to the tank is formed with deep longitudinal hollow ribs 4 on two sides and inwardly directed hollow ribs 5 at right-angles to the first ribs along the other sides.
Patent GB-1079253-A (GB)
Title: Improvements in or relating to aerosol dispensing valves
IPC: B65D83/14
Filed: 1964-09-01
Abstract: 1,079,253. Pressurized dispensing container valves. N. W. SEAQUIST. Sept. 1, 1964 [Sept. 3, 1963], No. 35740/64. Heading F1R. The depending tail portion 12 of the valve body 10 of an aerosol dispensing valve is provided with an internal annular projection 16 and a substantially rectangular internal cross-section 18, above the projection, to secure and prevent rotation of the dip tube 14. The valve stem may be of the solid mushroom shaped type.