baber/WOPTO huggingface dataset:
Patent GB-1342006-A (GB)
Title: Process for producing a sinter which contains waelz oxide and is to be processed in a shaft furnace for smelting zinc
IPC: C22B19/34
Filed: 1971-08-27
Abstract: 1342006 Sinter containing Waelz oxide METALLGESELLSCHAFT AG 27 Aug 1971 [10 Sept 1970] 40354/71 Heading C1A A sinter containing Waelz oxide as hereinafter defined which is to be processed in a shaft furnace for smelting zinc is produced in a process wherein Waelz oxide is subjected to a separate step in which the Waelz oxide is simultaneously homogenized, moistened and compacted and is then added to a mixture to be sintered the mixture comprising a sulphide zinc ore or concentrate whereafter the mixture is sintered. Waelz oxide is an oxidic material produced by the Waelz process and normally having a metal content of 60 to 70% by weight. Preferably the homogenizing, moistening, and compacting step comprises a pelletizing and fuel is incorporated in the pellets. The percentage of fuel incorporated in the pellets may be lower than the percentage of fuel incorporated in the mixture to be sintered. The fuel is preferably a sulphur-containing material. The pellets may have a size up to 10 millimetres. The homogenizing, moistening and compacting step may advantageously comprise an ageing step, the mixing time used in the ageing step being longer than the mixing time used to mix the sinter mixture. The moisture content of the mixture which is being aged may amount to 3 to 20% by weight.
Patent GB-1013455-A (GB)
Title: A heat curable composition
IPC: B29C48/21
Filed: 1963-10-14
Abstract: A heat curable composition comprises (1) an ether or an ester of an alcohol of the formula <FORM:1013455/C3/1> where n is 1 or 2 and (2) an amine having at least two nitrogen bonded hydrogen atoms. The esters (1) generally contain another five-or six-membered ring. Specified compounds (1) are 3,4 - dihydro - 1,2 - pyranyl - 2 - methyl-3,4 - dihydro - 1,2 - pyran - 2 - carboxylate; 3,4 - dihydro - 1,2 - pyran - 2 - methyl - 2,3-dihydrothiophene - 2 - carboxylate; 3,4 - dihydro - 1,2 - pyran - 2 - methyl - N - methyl-2,3 - dihydropyrrole - 2 - carboxylate; 3,4-dihydro - 1,2 - pyran - 2 - methyl - 2,3 - dihydrofuran - 2 - carboxylate; dimethyldi - (3,4-dihydro - 1,2 - pyran - 2 - methoxy) silane; tri-(3,4 - dihydro - 1,2 - pyran - 2 - methyl) ether.  Examples of amines are metaphenylene diamine, methylene dianiline, diaminodiphenylsulphone, triethylenetetramine, di - (hexamethylene) triamine, 1,3 - diamino-(methyl) cyclohexane and 1,3 - diaminocyclohexane. The composition is prepared by mixing the two components together with or without a solvent.  Suitable amounts of amine are 0.8 to 1.5 equivalents per ethylenic group adjacent to the heteroatom.  Other materials, e.g. fillers, dyes, plasticizers, stabilizers, vinyl resins, tars, pitches, distillate oils and alkyd resins may be added. Resinification is by heating to 90 DEG  to 250 DEG  C., accelerators or catalysts may be added.  Uses.-Laminates, adhesives, mouldings and surface coating compositions.
Patent GB-1510939-A (GB)
Title: Pilocarpine salts
IPC: C07D405/08
Filed: 1976-09-29
Abstract: 1510939 Pilocarpine salts MERCK & CO Inc 29 Sept 1976 [8 Oct 1975] 40447/76 Heading C2C The novel pilocarpinium 2-naphthalenesulphonate, 2,5 - dihydroxybenzoate, dihydrogenphosphate, 2 - chloro - 4,6 - disulphamoylphenoxide and 3,5 - di - tert - butylsalicylate salts are prepared by reacting pilocarpine with the appropriate acid or phenol in solution. Anti-glaucoma compositions for topical use comprise an above novel salt together with a topical ophthalmic carrier.
Patent GB-1456597-A (GB)
Title: Process for polymerizing norbornene derivatives
IPC: C08G61/06
Filed: 1974-09-18
Abstract: 1456597 Polymerization of substituted norbornenes JAPAN SYNTHETIC RUBBER CO Ltd 18 Sept 1974 [19 Sept 1973] 40658/74 Heading C3P A norbomene derivative having at least one substituent which is an ester group, an amide group, an imide group, a nitrile group, a carboxylic acid anhydride group or a halogen atom is polymerized in the presence of a catalyst comprising (A) at least one W, Mo, Ta or Re compound, (B) at least one organo-metallic compound of a metal (including boron) of Group Ia, IIa, IIb or IIIb of the Mendeleef Periodic Table and (C) at least one aldehyde or ketone. The derivative may be homopolymerized or copolymerized with one or more of said derivatives or with a cyclic olefin. The polymerization may be carried out in the presence of a solvent and a molecular weight regulator in an inert atmosphere of nitrogen, helium or argon. Many derivatives and catalyst components are specified. In the examples, methyl-5-norbornene-2- carboxylate, 5-norbornene-2-nitrile or N,N- dimethyl-5-norbornene-2-carboxylic acid amide is polymerized in toluene, n-heptane, monochlorobenzene, ethyl acetate or dichloroethane using WCl 6 , triisobutyl- or triethylaluminium and one of acetone, diacetyl, acetylacetone, acetonylacetone, benzophenone, methyl vinyl ketone, benzaldehyde, acrolein, cyclohexanone, n-butraldehyde, methyl isopropyl ketone, benzalacetone, cinnamaldehyde or ophthalaldehyde with or without hexene-1 as molecular weight regulator.
Patent GB-1210226-A (GB)
Title: Improvements relating to power assisted steering systems
Inventor: ADAMS FREDERICK JOHN
IPC: B62D5/09
Filed: 1967-09-07
Abstract: 1,210,226. Power-assisted telemotor steering. CAM GEARS (LUTON) Ltd. 14 Aug., 1968 [7 Sept., 1967], No. 40875/67. Heading B7H. In an hydraulic steering system comprising a manually-operated reversible pump 4 connected to a double-acting servomotor 18, a separate power-driven uni-directional pump 20 and valve means to direct working fluid from the power pump 20 to one or other side of the manual pump in dependence on the sense and magnitude of the torque applied to the reversible pump 4, the valve means comprises two valves 23 which are normally closed when a sub-critical torque is applied and either one of which is opened, preferably through a push-rod 27, by a valveactuating element 26 rotatable by a steering- wheel 1, the valves being carried by and seating in a body element 22 which is also rotatable by the steering wheel and is rotatable relative to the actuating element 26 by reason of torsional strain in a coupling between the body element 22 and the valve actuating element 26. In operation, when, for example, an above-critical torque is applied clockwise to the pump 4, the right-hand valve 23 is opened, permitting pressure fluid to pass from conduit 21 to conduit 25, through a spool valve 8 past a non-return ball valve 11, displacing the valve spool 10 to the left, and through a conduit 6 to the pump 4 from which it passes through a conduit 5, into a second spool valve 7 and through a conduit 16 to the servomotor 18 exhaust fluid from which passes through conduits 17 and 14 and round the displaced valve spool 10 to a fluid reservoir 15. The torsional coupling between the steering column parts 2 and 3 may comprise a pair of opposed springs acting on the lever 26 within the body 22 to centralize it relative to the body 22.
Patent GB-1278353-A (GB)
Title: Preparation of dicarboxylic acids
IPC: C07C51/12
Filed: 1969-08-15
Abstract: 1278353 Dicarboxylic acids MONSANTO CO 15 Aug 1969 [15 Aug 1968] 40881/69 Addition to 1234641 Heading C2C Dicarboxylic acids are prepared by reacting non-vicinal glycols (3-20 C), their halogen substituted derivatives, or their ester and ether derivatives with carbon monoxide in a solution containing a rhodium or iridium compound as catalyst with a promotor selected from halogen and halogen compounds at a temperature of from 125‹ to 250‹ C. and where the compound is a derivative of a glycol in which both OH radicals are substituted, water at a temperature of 125‹ to 250‹ C. Glycols, preferably with 2 less carbon atoms than the desired acids, may be, e.g., 1,3- propanediol to yield glutaric acid, or rescorcinol or hydroquinone to yield phthalic acids, and derivatives may be tetrahydrofuran, 1,4-dibromobutane, 1,6-diiodohexane, 1,4-butaneglycol diacetate, 1,3-dibromobutane, 1,4-dichlorobutane; paradiiodobenzene and 1,5-dichlorooctane. The rhodium or iridium compounds may be co-ordination complexes which may include suitable ligands, e.g. complexes of rhodium, carbon monoxide, and iodide. Adipic acid may be prepared using a feedstock with derivatives of butane-1,4-diol such as 1,4-dichlorobutane, 1,4 - dibromobutane, tetrahydrofuran, and combinations thereof.
Patent GB-1193365-A (GB)
Title: Liquid-Fuel Injection Nozzles
Inventor: SIMMONS HAROLD CUTHBERT
IPC: F23D11/26
Filed: 1968-08-27
Abstract: 1,193,365. Spray burners. PARKERHANNIFIN CORP. 27 Aug., 1968, No. 40952/68. Heading F4T. A liquid fuel injection nozzle 1 comprises a diaphragm 9 which flexes in response to increasing pressure of fuel in an annular chamber 6 to allow an increasing flow of fuel through an annular orifice defined between a central aperture 12 in the diaphragm 9 and a seat 8, the fuel thereafter flowing to a spin chamber 17, where it is caused to be swirled by fuel passing into the spin chamber 17 through tangential slots 19 in the seat 8, and thence through a restricted exit orifice 18, whereby the diaphragm 9 is subjected to only a portion of the total fuel nozzle pressure drop. As shown in Fig. 2, the seat 8 is formed by the bevelled end face of a central extension 7 of a body portion 4 which has passages 15 and 16 for the intake of fuel into chamber 6. At fuel pressures below a predetermined pressure the diaphragm 9 abuts the seat 8 and fuel flows to the spin chamber 17 only through the slots 19; at higher fuel pressures the diaphragm 9 flexes within a limit imposed by abutment against a wall of a counter-bore 25 in a cap 5 attached to body portion 4 at the downstream end of the nozzle 1. In an alternative construction the end face of extension 7 is flat and the diaphragm aperture is closely spaced radially therefrom to avoid preload. In the construction shown in Fig. 6, the fuel chamber 37, and tangential slots 29 are formed in a replaceable insert 27 in the cap 30; the exit orifice 31 being provided in a further replaceable insert 33, the two inserts 27 and 33 clamping a diaphragm 32 therebetween and being held against a conical socket 44 in the body portion 39 through the intermediary of a ball joint 42 which permits compensation for any slight misalignment of the components. The inserts 27 and 33 may be replaced by differently dimensioned inserts to vary the operational characteristics of the nozzle.
Patent GB-1438355-A (GB)
Title: Rubber additives and vulcanizates
IPC: C08L33/00
Filed: 1973-08-31
Abstract: 1438355 Coupling agents for rubber compounds PPG INDUSTRIES Inc 31 Aug 1973 [31 Aug 1972] 40995/73 Headings C3P and C3Q  Additives for curable rubbers comprise (a) siliceous pigment, and (b) a coupling agent which is a catalytic reaction product of (1) a hydrosilane of formula in which X is halogen or -OR, R and M are H, alkyl, cycloalkyl, aryl, aralkyl, alkaryl or acyl groups, any of which may be halogen substituted, and n is 1, 2 or 3, and (2) a synthetic unsaturated rubber polymer having at least 1 wt. per cent of its unsaturated groups as pendant vinyl groups, said reaction product having from 0À03-50 parts by weight of hydrosilane per 100 parts of synthetic unsaturated rubber. The coupling agent (b) may be either mixed with, or coated on to, the siliceous pigment (a). The additive may be blended with a further rubber. Examples 1-3 describe the preparation of coupling agents by reaction of SBR with triethoxy silane in the presence of hexachloroplatinic acid as catalyst, and (Ex. 3 only) mixing the product with natural rubber. Example 4 describes the coating of a siliceous pigment with a benzene solution of the silanated rubber of Example 1. Examples 5 and 7 describe the mixing of the product of Example 4 with SBR. Example 6 describes the mixing of a curable rubber which is SBR or natural rubber with the products of Examples 4 or 5 or with both a siliceous pigment and the products of Examples 1, 2 or 3, the compositions also containing other conventional rubber additives including curatives.
Patent GB-1187486-A (GB)
Title: Device for Washing Tanks
Inventor: MARCHAM JAMES SYDNEY
IPC: B05B3/16
Filed: 1967-09-07
Abstract: 1,187,486. Cleaning tanks. SAMUEL HODGE & SONS Ltd. 31 July, 1968 [7 Sept., 1967], No. 40999/67. Heading A4F. [Also in Division B2] A tank washing device comprises a rotary turret 10 carrying nozzle heads 13, 14 mounted for rotation about a horizontal axis and having nozzles A. B, C for directing jets of washing fluid in different directions, and a drive system powered by the washing fluid supplied to the nozzles to rotate the turret and drive the nozzle heads, the turret carrying two nozzle heads mounted for rotation about a common axis and the drive system being constructed to oscillate each nozzle head over an angular range such that one nozzle always discharges upwards partially to counteract the downward discharge of another, the nozzle heads being so arranged and so driven that the nozzles of one head are symmetrical with respect to those of the other about a vertical plane through their axis of oscillation. Preferably each nozzle head supports three nozzles in fixed acute angled relation between adjacent nozzles.
Patent GB-1178770-A (GB)
Title: Control Arrangement for Electro-Erosive Working
IPC: B23H7/18
Filed: 1967-09-07
Abstract: 1,178,770. Spark erosion. INDUSTRIELLE ELEKTRONIK AGIE LOSONE BEI LOCARNO A.G. 7 Sept., 1967 [11 July, 1967], No. 41032/67. Heading B3V. [Also in Divisions G3 and H3] In a control circuit for an electro-erosion apparatus the width of the gap between the tool electrode and a workpiece is automatically regulated in dependence upon a parameter of an electrical or physical condition at the gap, e.g. voltage, current, pulse length or the like for spark erosion apparatus, and electrolyte pressure, temperature or the like for electrolytic erosion apparatus, and the circuit includes a number of switching stages connected in parallel to which the chosen parameter is applied, each stage being adapted to respond to a respective differing predetermined value of the parameter and the output of the switching stages being connected to a device for adjusting the width of the gap. As shown, a signal representative of the voltage at the work gap is derived from a potentiometer 13 connected across the gap and is applied by way of a filter 14 and an amplifier 141 to three switching stages 151, 152, 153 whose outputs are connected, over summing circuits 154, 155, to a differential amplifier 156 having its output connected to energize the coils 102, 103 of a solenoid valve controlling the hydraulic drive of the electrode feed mechanism (Fig. 1, not shown). Switching stage 151 is set to respond when the gap voltage is relatively high, e.g. 5 to 8 V., indicating no-load conditions; stage 152 is set to respond to a voltage, e.g. 4 V., representing equilibrium conditions, and stage 153 is set to respond when the gap voltage is relatively low, e.g. 2À5 V., representing short-circuit conditions. Thus, when the gap is too large, stage 151 responds and coil 102 is energized so that the electrode is moved towards the workpiece, and when the gap is too small coil 103 is energized and the electrode is retracted ; in the equilibrium position the arrange-  ment is such that cyclically recurring signals are applied to the coils 102, 103 from the stage 152 through the circuits 154, 155 and amplifier 156, resulting in a vibratory motion of the electrode. The electrode feed mechanism may be electrically driven (Fig. 4, not shown) so that the electrode moves in discrete steps, and in this instance a separate coil may be provided to superimpose vibratory motion on the electrode. The switching stages 151, 152, 153 may be constituted by Schmitt triggers, and a suitable transistor arrangement for the control circuit is described with reference to Fig. 5 (not shown).
Patent GB-1186989-A (GB)
Title: Process for Producing L-Homoserine and L-Lysine
IPC: C12P13/06
Filed: 1968-08-28
Abstract: 1,186,989. L-Lysine and L-homoserine by fermentation. KYOWA HAKKO KOGYO CO. Ltd. 28 Aug., 1968 [12 Sept., 1967], No. 41046/68. Heading C2C. L-Lysine and L-homoserine are prepared by culturing a hydrocarbon-assimilating microorganism of the genus Corynebacterium, that requires L-threonine for its growth, under aerobic conditions in an aqueous nutrient medium containing at least one hydrocarbon as the main carbon source and L-threonine. A preferred micro-organism is C. hydrocarboclastus ATCC 21267, and the culturing is normally conducted between 25‹ and 50‹ C. at pH, ca. 7, using as hydrocarbon source aliphatic hydrocarbons having from 10 to 45 carbon atoms (particularly n-paraffins of 11 to 18 carbons), gaseous hydrocarbons or crude petroleum mixtures, e.g. kerosene. The L-lysine and L-homoserine produced may be sequentially recovered by ion-exchange resin treatment.
Patent GB-975223-A (GB)
Title: Surfaces for road and pavement construction
IPC: E01F9/506
Filed: 1963-10-17
Abstract: 975,223. Road surfaces. FARBWERKE HOECHST A.G. Oct. 17, 1963 [Oct. 17, 1962], No. 41113/63. Headings E1G and E1V. A road or the like surface of tar, bitumen or asphalt has particles of a plastic pressed therein while the surface is at an elevated temperature. The particles may be partially melted before pressing or rolling into the surface which may be heated from laying or heated subsequently. Particles having diameters between 3 and 8 millimetres are preferably of a polyolefine, or a copolymer formed from two or more monomers selected from ethylene, propylene and 1- butene, or composed of an elastomeric copolymer with cross-linking brought about in the particles. The particles may contain a filler, a pigment, a luminescent substance, or a light reflecting substance such as aluminium bronze. The invention may be applied to road sign markings in the road surface.
Patent GB-1277109-A (GB)
Title: Multiremanent ferroelectric ceramic optical devices
IPC: G11C11/22
Filed: 1969-08-18
Abstract: 1277109 Modulating light; ferroelectric storage apparatus UNITED STATES ATOMIC ENERGY COMMISSION 18 Aug 1969 [11 Sept 1968] 41137/69 Headings H3B and H4F [Also in Division G5] An optically birefringent ferroelectric ceramic plate 10, e.g. of Pb 0À99 Bi 0À02 (Zr x Ti 1-x ) 0À99 O 3 , where x is 0À45 to 0À95, having a multiplicity of domains and grams, has an average grain diameter of less than 2 microns, a plurality of stable electric polarization states 28a-28e above zero polarization and an initial remanent electric polarization at one of said states, so that on application of an electric field between electrodes 22 and 24 on the plate, the magnitude of polarization of the domains and the birefringence of the plate varies. A generator 26 may provide pulses to switch the plate from one state to the other or the plate may be initially polarized at saturation remanence and operated reversibly above saturation remanence, e.g. above point 28a. The birefringence of the plate increases nearly linearly with polarization on the initial polarization cycle, Fig. 4 (not shown). Together with an analyser 14 and polariser 16, the plate may act to intensity modulate monochromatic light, e.g. a shutter, or to transmit selected wavelengths of white light. Such a modulator operates about some fixed retardation of light, depending on the remanent polarization. For small and large signal fields, the variations in retardation follow a linear or square law, respectively. On switching the remanent polarization by a discrete amount from its initial value, the relationship between retardation and applied field, i.e. the modulation index, also charges by a discrete value, i.e. the plate has an electrically variable modulation index. The construction of a matrix of electrodes on one plate is described with reference to Figs. 6 and 7 (not shown), e.g. for a colour display or matrix of light shutters. Two such plates may be used in a coincidence addressed memory, with a permanent memory on one plate and an alterable memory on the other. The two plates may replace plate 10 of Fig. 1. If the individual bits on each memory coincide spatially but are switched relatively by 90 degrees, and the retardations produced are equal, complete extinction is obtained with crossed polarizers 14, 16. Reference has been directed by the Comptroller to Specification 1,180,529.
Patent GB-1466438-A (GB)
Title: Fabrication of liquid crystal devices
IPC: H01L21/28
Filed: 1974-09-20
Abstract: 1466438 Controlling light RCA CORPORATION 20 Sept 1974 [27 Sept 1973] 41149/74 Heading G2F In a "twist" nematic liquid crystal device a layer of metal such as will induce a parallel nematic alignment is provided over the surfaces of two electrode bearing plates bounding the liquid crystal layer, and the plates are sealed together by fusion of an intermediate glass frit beading in air, the metal layer being converted to an oxide layer which retains its aligning properties but is more transparent. As particularly described, the metal layer is produced by oblique evaporation, e.g. of Zn, Ni, Cr, Sn, Pb, Ti or Al, but reference is also made to the orientation properties of grooves and scratches.
Patent GB-983193-A (GB)
Title: Improvements in or relating to tape feeding arrangements
IPC: G11B15/61
Filed: 1962-10-31
Abstract: 983,193. Feeding magnetic tapes. AMPEX CORPORATION. Oct. 31, 1962 [Nov. 24, 1961], No. 41247/62. Heading G5R. The coaxially arranged feed and take-up spools 12, 13, winding magnetic tape relatively to a helicalwrap scanning assembly of known type 57, are supported and rim-driven by at least three rollers 21-24 engaging grooves 18 in the spool checks, the tape leaving the spools tangentially where a reel radius intersects one of the rollers. Normal compliance means 32,34 regulate the feed and take-up torques at the reel motors 24 and a capstan 33, engaged by the tape twice, at the respective level of each reel maintains a tight loop system about the scanning assembly 57 in conjunction with deflection rollers 58, 59, 59a, 58a. To prevent tape edge crimping, the deflection rollers are preferably slightly crowned, Fig. 5, the additional elastic stretching of the tape at its centre line preventing the tendency to transverse tape migration.
Patent GB-1517418-A (GB)
Title: Sealed flange joint
IPC: F16L23/036
Filed: 1976-10-05
Abstract: 1517418 Welded flange joint STEIN INDUSTRIE SA 5 Oct 1976 [22 Oct 1975] 41338/76 Heading F2P Parts 1 and 3 of, e.g., a pressurized vessel are joined by providing respective flanges 2, 4 and joining the flanges with screw studs 9 having split centring rings 14 of spring steel, wherein sealing is effected by a lip weld 16 between plates 17, 18, respectively, welded at 19 to flanges 2 and 4.
Patent GB-930096-A (GB)
Title: Improvements in couplings and junctions for co-axial and like electric cables
Inventor: CHIFFEY EDWARD
IPC: H02G3/06
Filed: 1960-12-01
Abstract: 930,096. Mechanical couplings for cables. KAY & CO (ENGINEERS) Ltd. Sept. 27, 1961 [Dec. 1, 1960], No. 41347/60. Class 38 (1). A coaxial or like cable coupling comprises a cylindrical box (Fig. 1, not shown) with sockets e (Fig. 2) having a bore in which the bared end of a cable is inserted, each socket being engaged by a nut f having an inturned rear flange l abutting a ring g<SP>2</SP> such that on tightening the nut the ring is wedged against the sloping faces e<SP>1</SP> and I causing it to deform and grip both the cable sheath b and cover skin d. In a modification (Fig. 4, not shown) for use with braided cable the socket member has only one sloping face and the braiding is folded around the ring and gripped between the ring and the sloping face on tightening the nut.