baber/WOPTO huggingface dataset:
Patent GB-1190469-A (GB)
Title: Capacitive Transducer.
IPC: G01D5/24
Filed: 1968-11-27
Abstract: 1,190,469. Variable capacitors. BAUSCH & LOMB Inc. 27 Nov., 1968 [6 Dec., 1967], No. 56394/68. Heading H1M. [Also in Division G1] A capacitive transducer for measuring angular displacement comprises two fixed outer plates 26, 28 (Fig. 2), and a rotatable centre plate 30 acting as a shield. The fixed outer plate 28 consists of an insulating disc covered on one side with a thin film of copper 52; centre plate 30 consists of an insulating disc with one half of one side covered with a thin copper coating 50, outer plate 26 consists of an insulating disc covered on one side with a copper film divided into a semi-circular ribbon 44 (Fig. 4), and the remainder 42. The three plates are assembled in a housing with a shaft 16 attached to centre plate 30 by a bushing. An A.C. voltage is applied to end plate 28 (Fig. 10) and a voltage is developed on ribbon 44 depending on the capacitance between the ribbon and plate 28, which depends on the length of ribbon not shielded by centre plate 30. This voltage is therefore indicative of the angular position of shaft 16. The effect of the capacitance between the ribbon 44 and the plate 30 is eliminated by a high-gain amplifier 62 with negative feed-back via capacitor 64 connected to the ribbon, whereby the ribbon is maintained at substantially earth potential, i.e. at the same potential as plate 30. In modifications, the ribbon may be duplicated (Fig. 5, not shown) to measure over 360 degrees, or it may be wedge-shaped (Fig. 6, not shown) for a non-linear relationship.
Patent GB-1185300-A (GB)
Title: Rotary Electric Pump
IPC: H02K5/167
Filed: 1967-03-08
Abstract: 1,185,300. Pump motors. UNELEC. 8 March, 1967 [24 Nov., 1966], No. 56700/69. Divided out of 1,184,176. Heading H2A. [Also in Division F1 In an electric motor-pump in which the pump impeller 13 is mounted on the same bearing bush 8 as the planar motor rotor, impurities are deflected away from the rotor into the delivery by a deflector 29 on the rotor. An additional baffle 30 prevents dirt getting into the air-gap, and the bearing is protected by a cover 28. The bearing is of a material, e.g. graphite or ceramic, lubricated by the pumped liquid.
Patent GB-1166520-A (GB)
Title: Coupling Construction
IPC: F16D25/08
Filed: 1967-12-13
Abstract: 1,166,520. Controlling positive clutches. MITSUBISHI JUKOGYO K.K. 13 Dec., 1967 [17 Dec., 1966], No. 56735/67. Headings F2C and F2L. A positive clutch comprises a sleeve 5 rotatably supported in a ring 9 and having internal straight teeth (6), Fig. 2, (not shown), in constant engagement with teeth (3) on the driving shaft, and helical teeth (7) co-operating with similar teeth 4 on the driven shaft 2, the sleeve 5 being moved by a lever 10 having a pin-and-slot connection with a second lever 13 having a fixed pivot 14 and its free end connected by a spring 19 to the free end of a third lever 17 pivoted by means of a fluid, e.g. hydraulic, piston and cylinder so that, when the speed of the driving shaft 1 slightly exceeds the speed of the driven shaft 2, e.g. by 5 r.p.m., a control 22, not further described, directs oil to the cylinder 21 to pivot lever 17 to the right, and the spring 19, which initially urges the sleeve 5 to the disengaged position, passes over centre to urge the clutch into engagement and hold it there with a relatively greater spring bias than that initially holding it disengaged. The helical teeth are directed to increase the engaging force. To disengage the clutch, hydraulic pressure is removed from the cylinder and lever 17 moves back to its initial position but, as the spring 19 does not pass over centre the clutch remains engaged until the shaft 2 over-runs shaft 1 when the helical teeth overcome the small spring bias to move the sleeve to the left. The spring then passes over centre and the sleeve 5 is moved to the left until lever 10 abuts a stop (25). As described, the clutch couples a generator (2<SP>1</SP>), Fig. 1 (not shown), to a main engine (1<SP>1</SP>), the generator being also driven by an auxiliary engine (3<SP>1</SP>). With the clutch disengaged, the engine (3<SP>1</SP>) drives the generator up to the speed of engine (1<SP>1</SP>), when the clutch is engaged and the engine (3<SP>1</SP>) output reduced. To disengage the clutch, the output of engine (3<SP>1</SP>) is increased and that of engine (1<SP>1</SP>) decreased until engine (3<SP>1</SP>) drives the generator.
Patent GB-1334866-A (GB)
Title: Preparation of titanium dioxide concentrates and oxide pigments from ilmenite
IPC: C22B34/12
Filed: 1970-11-20
Abstract: 1334866 TiO 2  concentrates; Fe oxides BAYER AG 30 Nov 1970 [2 Dec 1969] 56777/70 Headings C1A and C1N TiO 2  concentrates and iron oxide pigments are produced by subjecting ilmenite to reducing roasting, and oxidizing the iron with nitrobenzene at 20-100 C. and at a pH of 3-7. The ilmenite may have a particle size of 40- 200 Á and may be preoxidized at 800-1100 C. It may be reduced at 700-1200 C. using H 2 , CO, natural gas, or coal. The iron oxidation may be effected in the presence of FeCl 2 , AlCl 3 , or a seed suspension (e.g. produced from FeSO 3  and NaOH), to produce black, yellow, or red pigments respectively. The solids are then decanted, and residual aniline removed by steam distillation. The pigment may be separated from the TiO 2  by screens, hydrocyclones, or overflow thickeners, and may then be washed and dried at 100-110 C. It may have a particle size of 0À5-0À6 Á, or of 0À7-1 Î 0À2 Á. The TiO 2  concentrate may be washed with HCl or HgSO 4  (e.g. sulphate process waste acid) to remove residual iron, and may then be chlorinated.
Patent GB-1205256-A (GB)
Title: Process for the controlled reaction of a metal with a liquid
Inventor: LEMKE CHARLES HAROLD
IPC: C01B3/10
Filed: 1967-12-15
Abstract: 1,205,256. Controlled reaction of metal and liquid. E. I. DU PONT DE NEMOURS & CO. 15 Dec., 1967 [15 Dec., 1966], No. 57194/67. Heading C1A. Sodium, potassium or lithium, or alloys thereof, or calcium, are reacted by contacting with an aqueous liquid which is dispersed in a continuous liquid phase which does not react with either the metal or aqueous liquid. The dispersion preferably contains between 1% and 50% by volume of the aqueous liquid. The non-reactive liquid is preferably a hydrocarbon oil and the aqueous liquid may be water or an aqueous solution of an acid, base, alcohol or hydrogen cyanide, or a mixture of such compounds. The reaction is preferably carried out at a temperature of between 0‹ and 100‹ C. The rate of reaction is controlled by adjusting the temperature of the liquid mixture or by adjusting the ratio of aqueous liquid to the non- reactive liquid. In order to prevent explosive mixtures of hydrogen and oxygen forming on the surface of the liquid mixture, the surface may be swept with air. Examples describe the application of the process to the disposal of sodium from sodium filled plastic tubes of the type used for electrical conduction, the disposal of sodium and calcium on metal surfaces resulting from alloy coating processes, the disposal of sodium sludge filter resulting from the manufacture of sodium by electrolysis of molten sodium chloride, and in cleaning heat exchange media such as sodium-cooled reactors.
Patent GB-1209110-A (GB)
Title: Independent suspension arrangements for suspending automobile wheels
IPC: B60G3/24
Filed: 1968-12-04
Abstract: 1,209,110. Vehicle suspensions; mounting vehicle differentials. NISSAN JIDOSHA K.K. 4 Dec., 1968 [4 Dec., 1967], No. 57540/68. Headings B7D and B7H. A vehicle has wheels independently suspended by means of a suspension member 6 to which is pivoted a suspension arm 8, said arm at its free end having a bearing in which the wheel is journalled, and there being a coil spring shock absorber between the arm and the vehicle body, the suspension being set up such that the inward force on the wheel due to the camber angle equals the outer cornering force due to the wheel toe angle, and to achieve such a set up the following relation must be satisfied:- cosαcos#/sinα = N/C wherein α is the angle between the pivot axis of the suspension arm and the horizontal; # is the angle between the projection of this axis on to a horizontal plane and the longitudinal vehicle axis; N is the cornering force per degree of toe angle and C is the thrust per degree of camber angle. The wheel is driven by shaft 2 from a differential 3 which is supported from the vehicle body by a mounting 5. Member 6 suspended from the body by mounting 7. Alternatively the arm 8 may be pivoted directly to the body.
Patent GB-1199670-A (GB)
Title: Improvements relating to Radio Frequency Tubes
Inventor: LUEBKE WILLIAM ROBERT
IPC: H01J23/083
Filed: 1968-12-05
Abstract: 1,199,670. Two-part couplings. VARIAN ASSOCIATES. 5 Dec., 1968 [18 Dec., 1967], No. 57882/68. Heading H2E. [Also in Division H1] A detachable coupling arrangement for making connection to the leads of one or more electrostatic focusing lenses in a klystron (see Division H1), for permitting the application to the lenses of desired potentials, incorporates ferrite attenuators for suppressing the propagation along the leads of radio-frequency energy from the klystron. The detachable portion 31 of the coupling is shown plugged into the shielding conductive tubes 25 surrounding the leads 23 of two lenses, each tube 25 being hermetically sealed by a ceramic insulator 32 which is sealed at one end to its lead 23 by a conductive disc 33, and at the other end to the tube 25 by a tubular conductor 34. For each lens lead, an end-section 36 in the detachable portion 31 is coiled into a spring provided at its end with a disc 37 for contacting a disc 38 mounted in the fixed portion of the arrangement. In portion 31 the leads are strung with ferrite attenuator beads 28 potted in silicone rubber.
Patent GB-1121518-A (GB)
Title: Improvements in or relating to apparatus for measuring the slip of asynchronous machines
IPC: G01R31/34
Filed: 1966-12-29
Abstract: 1,121,518. Control of A.C. motors. BROWN BOVERI & CO. Ltd. 29 Dec., 1966 [31 Dec., 1965], No. 58137/66. Heading H2J. [Also in Division G1] In an arrangement for deriving the slip frequency of an asynchronous machine 1, and which may alternatively be used to obtain a control frequency for speed control of the machine, the rotor shaft n of the asynchronous machine is coupled to that of an auxiliary measuring machine 4, which has symmetrical multiphase windings mounted on its rotor connected via slip rings to a multiphase source PQR. The auxiliary machine has no stator winding, but has Hall plates 8 symmetrically arranged in the air gap between stator and rotor which produce an output directly related to the induction in the gap at either the slip or control frequency, depending on the arrangement of the supply at PQR. To derive slip frequency, PQR is fed with the same frequency as that used to supply the asynchronous machine at RST, and arranged to rotate in the same way as the shaft n. The Hall plate output is then at a frequency fx-fn, the slip frequency. To provide a speed control frequency, PQR is fed with a desired slip frequency arranged to rotate in the opposite direction to the shaft n. The Hall plate output is then at a frequency fx+fn, the frequency which should be supplied to the machine 1 to produce the desired slip.
Patent GB-1246974-A (GB)
Title: Process of depositing metal on insulating substrates
Inventor: SAVAGE JOHN
IPC: H05K3/10
Filed: 1967-12-22
Abstract: 1,246,974. Printed circuits. NATIONAL RESEARCH DEVELOPMENT CORP. 17 Feb., 1969 [22 Dec., 1967], No. 58398/67. Heading H1R. [Also in Division C7] Metals such as Ag are deposited in a predetermined pattern of network circuits on insulating substrates such as Al 2 O 3 , BeO, Si 3 N 4  by coating the substrate with an oxidizing heat decomposable metal nitrate, e.g. AgNO, and melting and decomposing the salt by means of an electron beam traversing the substrate in the required pattern and then removing the residual salt by washing, e.g. in hot water. The salt may be applied as a powder with or without a volatile dispersing agent, by dipping or by precipitation from a solution or dispersion. The salt coating is then melted, e.g. by heating to 250-350‹ C. for AgNO 3  and then traversed by an electron beam in a vacuum of 10<SP>-3</SP> Torr. The metal tracks formed had a line width of 0À001-0À02 inch and a thickness of 3-7 microns for a nitrate coating thickness of 10-20 microns.
Patent GB-1235909-A (GB)
Title: Purification of boric acid
Inventor: RUSSELL JOSEPH L
IPC: C07C67/00
Filed: 1968-12-10
Abstract: 1,235,909. Purification of boric acid. HALCON INTERNATIONAL Inc. 10 Dec., 1968 [11 Dec., 1967], No. 58578/68. Heading C1A. [Also in Division C2] Boric acid, contaminated with organic compounds, is purified by forming an aqueous slurry with from 1-20 parts of water per part by weight of boric acid, maintaining the thus formed slurry at a temperature between 0‹ and 60‹ C. while maintaining the boric acid in suspension and thereafter separating the boric acid from the water. The boric acid is held in suspension for at least 2 minutes.
Patent GB-1438709-A (GB)
Title: Silicon carbide ceramice
IPC: C04B35/565
Filed: 1973-12-18
Abstract: 1438709 Silicon carbide ceramics GENERAL ELECTRIC CO 18 Dec 1973 [21 Dec 1972] 58585/73 Heading C7D [Also in Division C1] A dense fine-grained SiC ceramic comprises # SiC and an additive consisting of B or B4C (the additive equivalent to 0À5-3À0 parts by wt. B to 100 parts SiC) having a density of at least 98% of the theoretical density. The ceramic is formed by hot pressing a homogeneous dispersion of submicron powders of SiC and B or B 4 C in an inert atmosphere at 1900-2000C and 5,000-10,000 psi. The inert gas is Ar, He, or N2
Patent GB-1193700-A (GB)
Title: New Spiro (4,5) Decane Derivatives and Process for Preparing them
Inventor: REGNIER GILBERT
IPC: C07D498/10
Filed: 1967-12-29
Abstract: 1,193,700. 1 - oxa - 2 - oxo - 3,8 - diazaspiro- (4,5) - decanes. SCIENCE UNION ET CIE, SOC. FRACAISE DE RECHERCHE MEDICALE. 23 Dec., 1968 [29 Dec., 1967], No. 58994/67. Addition to 1,100,281. Heading C2C. Novel compounds of formula and acid addition salts thereof wherein R is either a radical of formula Ar<SP>1</SP>-(CH 2 ) 2 - where Ar<SP>1</SP> is 2-pyridyl, 4-pyridyl or is phenyl substituted by nitro, amino, acetamido, propionamido, benzamido, p-chlorobenzamido, o-hydroxybenzamido, methylsulphonamido, sulphamyl or dimethyl or diethyl-, sulphamyl or R is a radical of formula Ar-X-(CH 2 ) n - where n is 1, 2 or 3 and X is carbonyl, -CH(OH)-, -CH(OCH 3 )- or and Ar is phenyl optionally substituted by one or two halogen atoms, are prepared by reaction of a compound of formula and a compound of formula R-Z where Z is a chlorine or bromine atom optionally followed by salt formation. Pharmaceutical compositions in conventional forms for oral, rectal and parenteral administration having bronchodilator, analgesic, antiinflammatory and central nervous system depressant activity comprises an above novel compound or salt and a carrier therefor.
Patent GB-1192850-A (GB)
Title: Copolymerisation of Allyl Fluoride
Inventor: WATERMAN JACQUES A
IPC: C07C17/20
Filed: 1969-01-27
Abstract: 1,192,850. Allyl fluoride copolymers. ISRAEL MINING INDUSTRIES INSTITUTE FOR RESEARCH & DEVELOPMENT. 27 Jan., 1969 [1 Feb., 1968], No. 59096/68. Heading C3P. An allyl fluoride copolymer is prepared by copolymerizing allyl fluoride at a temperature below 55 C. in the presence of a free radicalforming catalyst. The copolymerization may be effected in aqueous dispersion or in an organic solvent medium. Suitable catalysts are azocompounds such as azobisisobutyronitrile, peroxides, hydroperoxides, oxygen, persulphates, percarbonates, carbon halides and chloroformates. Suitable comonomers are vinyl esters, e.g. vinyl acetate, ethylene and sulphur dioxide. In the examples allyl fluoride is copolymerized with vinyl chloride, vinyl acetate, vinyl pivalate, ethylene and sulphur dioxide in the presence of aqueous sodium laurate, azobisisobutyronitrile, benzoyl peroxide, boron triethyl/cumene hydroperoxide, methanol/CCl 4 /H 2 O 2 /H 2 O/Fe 2 (SO 4 ) 3 / ascorbic acid, benzoyl peroxide/dimethyl-ptoluidine, methanol, tert.-butanol, potassium laurate, water, Na 3 PO 4 .12H 2 O, sodium-formaldehyde-sulphoxylate, disodium salt of ethylene diamine tetracetic acid, Fe 2 (SO 4 ) 3 .7H 2 O, potassium hydroxide, sodium dioctyl sulphosuccinate, carboxyl methyl cellulose, sodium bicarbonate and lauroyl peroxide.
Patent GB-1308983-A (GB)
Title: Remote control system for load manipulating vehicles
IPC: E02F9/22
Filed: 1970-03-24
Abstract: 1308983 Remote control apparatus for vehicles CATERPILLAR TRACTOR CO 24 March 1970 [7 May 1969] 59268/70 Divided out of 1308982 Heading B7H The subject-matter of this Specification is identical with Specification 1,308,982, but the claims relate to an apparatus for operating a control of a vehicle from a remote location by means of a circuit having two distinct signal channels.
Patent GB-1318710-A (GB)
Title: Current regulating device
IPC: H01C10/14
Filed: 1970-12-16
Abstract: 1318710 Motor controllers HUSQVARNA VAPENFABRIKS AB 16 Dec 1970 [16 Dec 1969] 59814/70 Heading H1N A device for regulating the current to a portable, electrically operated machine (such as a sewing machine) comprises a base 1 and a movable upper portion 3 defining a compartment housing the electrical components for current regulation and an adjacent compartment 8 housing electric leads 9 connected to the electric components and having an opening for storage and removal of the leads 9. The compartments are separated by wall 7 of upper portion 3. Device 10 is a plug for connection to the machine. In a second embodiment, Fig. 2 (not shown), a couple of holders 12 for the plugs are provided fixed to base 1.
Patent GB-598171-A (GB)
Abstract: 598,171. Galvanometers ; potentiometers. BRISTOL'S INSTRUMENT CO., Ltd. July 7, 1944, No. 13020. Convention date, July 7, 1943. [Class 37] A galvanometer has a moving coil adapted for deflection in a magnetic field which has both a unidirectional and an alternating component ; the unidirectional component reacts with the D.C. in the coil to produce a deflection and the alternating component links with the coil according to the magnitude of the deflection so as to induce an alternating E.M.F. adapted for amplification for purposes of measurement or automatic control. As shown in Fig. 1, a coil 10 is mounted to surround a core 11 and rotate about an axis 12 and is connected to terminals 16, 17. The field structure comprises a pair of polar projections 18, 19 forming air gaps with the core 11, a permanent magnet 20, and yokes 21, 22. Wound upon the polar projections 18, 19 are coils 23, 24 excited from an A.C. source 25 so as to superimpose an alternating flux on the unidirectional flux produced by the permanent magnet 20. With the coil in the position shown no E.M.F. is induced in it by the alternating field, but the coil has maximum sensitivity for deflection by the reaction of a D.C. current flowing therein with the unidirectional component of the magnetic field. Deflection of the coil causes an alternating E.M.F. to be induced, the magnitude depending on the extent of the deflection and the phase position with regard to the exciting current depending on the direction of the deflection. The permanent magnet 20 may be replaced by a ferro-magnetic member excited by a D.C. winding. This member may also carry the A.C. windings 23, 24, or a single winding may be excited simultaneously from A.C. and D.C. sources, a condenser being in series with the A.C. source and an inductance in series with the D.C. source. In another arrangement the mixture of D.C. and A.C. is obtained from a full-wave dry rectifier bridge with two opposite arms shunted by variable resistors. The moving coil 10 may be connected in series with a thermocouple exposed to a temperature to be measured and with the primary winding of the coupling transformer of an amplifier the output of which is connected through a transformer to an A.C. measuring instrument. The output of the amplifier may be supplied to the motor of a self-balancing potentiometer. Fig. 5 shows an instrument in which the magnetic circuit is so arranged that the permanent magnet is not traversed by an alternating flux. Permanent magnets 106<1>, 1071 are connected at their lower ends by a bridge 108 and at their upper ends carry polar structures 106, 107 provided with portions 109, 110 which approach one another so as to form a magnetic shunt containing an air gap 111. Wound on the portions 109, 110 are coils 112, 113 supplied with A.C. from a source 114. The movable coil may comprise two coils, which may be electrically separate or may have a common connection.
Patent GB-1277620-A (GB)
Title: Electrodes for electric arc furnaces
IPC: H05B7/085
Filed: 1969-12-12
Abstract: 1277620 Carbon composition and body thereof C CONRADTY 12 Dec 1969 [31 Jan 1969] 60668/69 Heading C1A [Also in Division H5] A solid, coreless arc furnace electrode of graphite or carbon has a titanium compound incorporated into the whole of the electrode, the titanium content of the finished electrode being not more than 20% by weight (preferably 0À5- 6% or specifically 3%), and the titanium either having beein introduced into the starting mixture used for the production of the electrode as titanium metal and/or titanium dioxide and/or as a compound of the general formula Ti(OR) 4  or Ti(NR 2 ) 4 , in which R is an alkyl radical with not more than 6 carbon atoms, e.g. a methyl or ethyl radical, or having been introduced into the finished electrode by impregnation with the latter compound.
Patent GB-1331103-A (GB)
Title: Polyester composition
IPC: C08K5/42
Filed: 1970-12-22
Abstract: 1331103 Polyester compositions KURARAY CO Ltd 22 Dec 1970 [29 Dec 1969 28 Feb 1970 (3)] 60897/70 Heading C3R A composition suitable for forming into fibres or films having good antistatic and dyeing properties comprises an aromatic polyester and 0À2-3% by weight of a compound of the Formula 1 in which A is an alkylene group, optionally having aliphatic and/or aromatic side chains, the polyoxyalkylene unit having an average molecular weight of 450-10,000, R and R<SP>1</SP> are the same or different alkylene or arylene groups, optionally having aliphatic substituents, M and M<SP>1</SP> are alkali or alkaline earth metals, m is an integer greater than 3 and h and n are 0, 1 or 2 such that h+n z 1. The aromatic polyester may be prepared by the reaction of terephthalic acid, naphthalene 2,6-dicarboxylic acid, diphenyl dicarboxylic acid, diphenyl ether dicarboxylic acid, ethylene-1,2-bis-(p-carboxylic phenoxide) or bis-(p-carbonyphenyl) sulphone with a pplymethylene glycol having 2-10 carbon atoms, cyclohexane dimethanol, p-xylene diol or benzene-1, 4-bis-(#-hydroxy ethoxide) or by the condensation of an aromatic hydroxycarboxylic acid, e.g. p-(#-hydroxyethoxy) benzoic acid, optional components of the polyester being isophthalic, phthalic, oxalic, adipic, sebacic acid or bis - (5 - carboxypentyl) sulphone and diethylene glycol, triethylene glycol, neopentyl glycol or bis-phenol A. The compound I may be added to the polyester in an amount of 0À5-5 mole per cent based on the acid component of the polyester, during its preparation or after polymerization. The polyester may also contain a delustrant, e.g. titanium dioxide, and a heat stabilizing agent, e.g. phosphoric acid or an ester thereof.