baber/WOPTO huggingface dataset:
Patent GB-1529335-A (GB)
Title: Suppressed carrier double sideband modulator for use in a vor goniometer
IPC: H03C1/58
Filed: 1975-09-05
Abstract: 1529335 Amplitude modulators; V.O.R. beacon WILCOX ELECTRIC Inc 5 Sept 1975 [30 Sept 1974] 36576/75 Headings H3R and H4D A modulator producing a double sideband suppressed carrier output suitable for use in a goniometer in a VOR guidance system comprises a pair of attenuator devices 52, 56 e.g. PIN diodes, a control arrangement 32, 42, 44 for blocking conduction of a respective one of the devices 52,56 for an entire corresponding half cycle of the low frequency signal at 18 and for conducting RF carrier signals at 24 with variable attenuation through the other device alternately with a modulation envelope corresponding to the amplitude of the modulation signal, the modulated output from device 52 being combined with the modulated output from device 56 phase inverted at 74 to produce the double sideband suppressed carrier output at 38. Square wave signals at the modulation frequency fully back bias the diodes 52, 56 when not conducting. The arrangement for variably attenuating the diodes 52, 56 comprise a function generator 44 connected to receive the modulation signal from 18 and a modulation signal reconstituted by demodulation at 80, 82 from the modulated output and combined via analog switches 88, 94. This feed-back arrangement also linearizes the envelope of the modulated output. The modulated output at 38 along with a similar output at 40 phase shifted by 90 degrees are applied to a pair of slotted aerials (Fig. 3 not shown) to derive a rotating figure of eight pattern and a composite modulated signal at 20 is also applied as the omnidirectional feed to the same aerials.
Patent GB-1455390-A (GB)
Title: Polyesters self-cooling wheel
IPC: C08L101/00
Filed: 1974-08-22
Abstract: 1455390 Plasticizers for polyvinylchoride CIBA-GEIGY AG 23 July 1975 [22 Aug 1974] 36885/74 Heading C3P [Also in Division C2] A thermoplastic polymer, for example polyvinyl chloride contains as a plasticizer a compound of the formula in which M is the residue of one or more aliphatic monocarboxylic acids or one or more saturated straight or branched chain monohydric alcohols containing from 4 to 12 carbonatoms, P is the residue of one or more saturated straight or branched chain aliphatic diols containing from 2 to 4 carbon atoms, D is the residue of one or more aliphatic dicarboxylic acids containing from 4 to 6 carbon atoms, or the residue of one or more such acids with a proportion not exceeding 10 mole per cent of the total acids used, of one or more aromatic dicarboxylic acids containing from 8 to 16 carbon atoms, L is the residue of 6-hydroxycaproic acid, each of the residues being joined together by ester linkages, residues P, D and L being distributed at random throughout the molecule, a, b and c each having a value greater than zero, the amount of residue of hydroxy acid being from 10 mole per cent to 90 mol per cent, based on the total number of moles of reactants, and the molar ratios of the remaining reactants being chosen so that the average molecular weight of the product is from 500 to 1400 and the ratio of monofunctional component to difunctional component is from 55 mole per cent to 220 mole per cent.
Patent GB-342059-A (GB)
Title: Improvements in chairs for metal trough sleepers
IPC: E01B9/54
Filed: 1929-12-02
Abstract: 342,059. Permanent way. JOYCE, H. W., Hotel Metropole, Naini Tal, India. Dec. 2, 1929, No. 36916. [Class 104 (ii).] Chairs consist of a spring holdfast which both secures the rail 18 and also holds the support 11 to the trough sleeper. The holdfast is made from spring-steel ribbon and includes two open or closed loops 4, 8 for engaging the rail and key, or both loops may engage the rail. The support 11 may be flanged and may be in one or two parts, while the ends 13 may be bent over the holdfast after insertion through the slots in the sleeper, or the support may form part of the sleeper. The rail is inclined by bending the sleeper ends or by the use of a cant-plate, while insulation 17 may be provided around the holdfast.
Patent GB-369911-A (GB)
Abstract: 369,911. Sparking plugs ; electric couplings. HAHN, L. F., 741, West End Avenue, Manhattan, New York, U.S.A. Sept. 24, 1930, No. 28550. Convention date, Oct. 3, 1929. [Class 7 (iv).] A brass sleeve c extends from within the casing a to the high-tension cable e, covering the connection of the latter to the conductor f. At the lower end the sleeve is flanged and clamped by the gland b, and also internally flanged for fitting within mica washers and wrappings. A cap d is spun at its lower edge into the wall of the sleeve c and split above for clamping to the cable covering e<1>. Both the disc f<2> on the conductor f and the ring a<4> secured within the casing a are eccentric.
Patent GB-619707-A (GB)
Title: Manufacture of new polyamides of the nylon type
IPC: C08G69/26
Filed: 1946-12-16
Abstract: A dicarboxylic acid having at least 4 carbon atoms between the carboxyl groups, is heated with a dialicyclic diamine having the general formula <FORM:0619707/IV(a)/1> where X is zero or an integer from 1 to 6 and R1, R2, R3, R4 are hydrogen atoms or methyl radicals, until the resultant polyamide has an intrinsic viscosity of at least 0.4.  Either or both ingredients may be replaced by the corresponding polyamide-forming derivative or the salt-prepared as by mixing ethanol solutions of the corresponding ingredients-may be used. Filaments made from such polyamides have a high resilience, which may be measured by the work recovered when a filament recovers from bending-flexor value-or from stretching.  The products obtained when the diamine is a mixture of stereoisomers of the general formula and is liquid at 25 DEG  C., are clear and transparent in massive form and soluble in chloroform/methanol mixture.  Dialicyclic amines include bi-(p-aminocyclohexyl); di-(p-aminocyclohexyl) methane; 2 : 21-dimethyl-4 : 41-diaminodicyclohexylmethane; 2 : 2 - di - (p - aminocyclohexyl) propane; 1 : 2 - di - (p - aminocyclohexyl) ethane; 1 : 6 - di - (p - aminocyclohexyl) hexane; 1 : 6 - di - (2-methyl-4-aminocyclohexyl) 1 : 1 : 2 : 2 : 3 : 3 : 4 : 4 : 5 : 5 : 6 : 6-dodecamethylhexane and mixtures of stereoisomers thereof; dicarboxylic acids include adipic; suberic; azelaic; sebacic; 4 : 41-biphenylenedicarboxylic acids.  In examples: (1) the salt of di-(p-aminocyclohexyl) methane and sebacic acid was heated at atmospheric pressure under nitrogen and then at 2 mm. pressure; (2) and (3) the same salt was heated under different conditions; (4) the salt of bi-(p-aminocyclohexyl) and sebacic acid; (5) the salt of 1 : 2-(p-aminocyclohexyl) ethane and sebacic acid; and (6) the salt of di-(p-aminocyclohexyl) methane and adipic acid was heated to produce a polyamide.  The dialicyclic diamines may be prepared by hydrogenating a liquid organic solvent solution of the appropriate diaryl diamines as in Specification 619,706.  Specification 461,237 also is referred to.
Patent GB-966433-A (GB)
Title: Improvements in or relating to ultrasonic signal transmitters
Inventor: CARLSON REUBEN CARL
IPC: B06B1/02
Filed: 1962-10-01
Abstract: 966,433. Ultrasonic signal transmitters. ADMIRAL CORPORATION. Oct. 1, 1962, No. 37166/62. Heading G4F. An ultrasonic signal transmitter comprises a D.C. generator 12, which excites a tuned circuit having impedances 50, 58 &c. selected to produce oscillation at a first predetermined frequency, the circuit containing a transducer 46 for producing a compressional airborne energy wave; first and second manually operable arrangements 26a and 26 for driving the generator, and a switch 40 operated with the second arrangement in response to a manual movement to introduce additional impedance 52, 54 into the circuit in order to change the oscillation frequency. Thus either of two frequencies may be applied to the transducer 46 according to which of the two manually operable arrangements is actuated. The oscillatory circuit described includes a transistor 44 and is of the Hartley type, with feedback from the emitter to base circuit by means of a tapped inductor 50, and the sound transducer 46 is of the piezo-electric type. The whole arrangement may be included in a small box through a wall of which protrude the gear-wheels 26 and 26a and switch arms 32 and 32a, so that it may be used as a remote control apparatus for wave changing in a T.V. receiver.
Patent GB-1414213-A (GB)
Title: Urea derivatives processes for their preparation and compo sitions incorporating them
IPC: C07C275/64
Filed: 1973-08-06
Abstract: 1414213 Cyclic N-phenyl-urea derivatives ROUSSEL UCLAF 6 Aug 1973 [4 Aug 1972] 37189/73 Heading C2C The invention comprises an N-phenyl-urea derivative of the general Formula (I) wherein: A represents a straight- or branchedchain alkylene group containing from 2 to 6 carbon atoms; X, which may be at any available position in the benzene ring, represents a hydrogen or halogen atom, a trifluoromethyl radical, a nitro group, an acyl radical containing from 1 to 6 carbon atoms, an alkyl or alkoxy radical each containing from 1 to 6 carbon atoms, or an unsubstituted or halo-substituted alkenyloxy radical containing from 2 to 6 carbon atoms; Y, which may be at any available position in the benzene ring, represents a hydrogen or halogen atom, or an alkyl or alkoxy radical each containing from 1 to 6 carbon atoms; and R represents an alkoxy radical containing from 1 to 4 carbon atoms, an alkoxycarbonyl radical containing from 1 to 6 carbon atoms, or a chloroacetyl group. Compounds of general Formula (I) where R is an alkoxycarbonyl or monochloroacetyl group R<SP>1</SP>, may be prepared by reacting an appropriate N-phenyl cyclic compound of Formula (V) with an appropriate halide R<SP>1</SP>-Hal<SP>1</SP>, where Hal<SP>1</SP> is Cl or Br, in the presence of a strong base. Compounds of general Formula (I) where R is an alkoxy radical R<SP>2</SP> may be prepared either by condensing an appropriate N-R<SP>2</SP>-N<SP>1</SP>-phenylurea of general Formula (II) with an appropriate alkyl halide Z-A-Hal<SP>2</SP> where Z is a halogen atom or hydroxy group, and Hal<SP>2</SP> is a halogen atom, in the presence of a strong base, or by cyclizing an appropriate N-R<SP>2</SP>-N-substituted-alkyl-N<SP>1</SP>-phenyl-urea of general Formula (IV) in the presence of a base. The compounds of Formula (II) may be prepared by reacting an appropriate o-alkylhydroxylamine R<SP>2</SP>-NH 2  with an appropriate phenyl isocyanate of Formula (VI) The compounds of Formula (IV) may be prepared by condensing an appropriate phenyl isocyanate of Formula (VI) with an appropriate N-alkoxy-N-hydroxyalkyl-amine of formula R<SP>2</SP>-NH-A-OH to give a compound of Formula (III) and then reacting the latter with a chlorinating agent such as thionyl chloride, sulphuryl chloride or oxalyl chloride. The compounds of Formula (I) are used in herbicidal compositions for use in agriculture.
Patent GB-1025744-A (GB)
Title: Sound suppressing device for air actuated percussion tools
IPC: B25D17/12
Filed: 1963-09-23
Abstract: 1,025,744. Silencers for gaseous flow. CONSOLIDATED MINING & SMELTING CO. OF CANADA Ltd. Sept. 23, 1963 [Sept. 28, 1962], No. 37296/63. Heading FIB. A sound suppressing device for a compressed air percussive tool comprises an elastic sleeve 22 surrounding the body 11 of the tool in the vicinity of the exhaust ports 14 and engaging at its ends on collars 20, 21, formed or mounted on the body, the air escaping between at least one of the collars and the end of the sleeve. The handle 13 of the tool is mounted on a boss 18 extending through a slot in the sleeve 22, which sleeve may be formed to engage the collar 21 at the chuck end of the tool more tightly than the other collar 20 so as to force all the air to escape past the collar 20. Slots 30, 30a, Fig. 4 (not shown) may be provided in collar 20 to reduce the extension of the sleeve at the collar by the escaping air, alternatively a small extension tube 31, Fig. 5 (not shown), may be provided to allow a portion of the air to by-pass the collar.
Patent GB-855253-A (GB)
Title: Coupling device
IPC: F16D43/14
Filed: 1958-11-21
Abstract: 855,253. Powder clutches. SOC. MEDITERRANEENNE MINIERE METALLURGIQUE ET COMMERCIALE. Nov. 21, 1958 [Nov. 22, 1957], No. 37497/58. Class 80 (2). A powder clutch comprises interengaging cupshaped driving and driven members 6, 7 with a small radial clearance 8, the torque-transmitting medium consisting of small balls 14 of a diameter greaterthan the clearance 8, but preferably not exceeding two millimeters. In the arrangement according to Fig. 1 member 6 is provided with circumferential openings 13 enabling the balls 14 to make contact with the inner periphery of member 7, while in the alternative form shown in Fig. 3 members 6, 7 are axially adjustable to control the slip. The. balls may be barrel polished and lubricated with'graphite or silicone grease, and the internal, surfaces of members 6, 7 may be metallized to increase friction.
Patent GB-1001879-A (GB)
Title: Switch point for railways
Inventor: BOUGHTON DONALD HENRY
IPC: E01B25/26
Filed: 1961-10-20
Abstract: 1,001,879. Switch point for overhead railways. BOATS FITTINGS CO. Ltd. Oct. 16, 1962 [Oct. 20, 1961], No. 37738/61. Heading B7L. A switch point for a single track overhead railway has switch-rails 11, 14 pivoted at 16, 17 to outgoing rails 12, 13 and being pivotal to engage at 18 an incoming rail 10 so that as one switch-rail is raised the other is lowered. A frame 19 fixed to supports 15 for carrying rails 10, 12, 13 carries a rotatable shaft 21 having extensions 23, 24 connected through ball-joint links 23a, 24a to switch-rails 11, 14, respectively. The shaft 21 rotatably carries a weight 28 having abutment faces 29, 30 co-operating with a lever 27 fixed to shaft 21. As shown in full lines switch-rail 11 is held engaged with rail 10 by weight 28 whose face 29 engages lever 27. To change the point, a sharp pull on a cord 32 causes the weight to swing over a top dead-centre position to drop into a position 28a, Fig. 3, in which face 30 engages lever 27 to rotate shaft 21 to raise switch-rail 11 and lower rail 14. Should a loaded runner 33, Fig. 3, run against a raised switch rail 11 or 14 then the rail is lowered to allow the runner to pass to rail 10 but the weight does not pass over the dead centre position so the weight returns the same switch rail to its raised position after passage of runner 33.
Patent GB-1485080-A (GB)
Title: Hydraulic braking system with antiskid device
IPC: B60T8/1761
Filed: 1975-09-15
Abstract: 1485080 Dual hydraulic braking systems FIAT SpA 15 Sept 1975 [25 Sept 1974] 37835/75 Heading F2F An hydraulic braking system including antiskid control comprises a rear circuit 101 fed from pump 53 and controlled by the throttling of a chamber 41 in response to the pressure in a first chamber 31 and, a front circuit 105 fed from chamber 97 whose pressure is dependent on that in a third chamber 81 which is at rear brake pressure. Depression of pedal 111 causes a first piston 9 to move to the left generating a pressure increase in chamber 31 which is communicated via passage 7 to raise a piston 11 restricting flow from transmission driven volumetric pump to reservoir 49 and causing a consequent pressure increase in pipe 57 which communicates with rear brakes 99 via switch valve 61, antiskid device 73 the third chamber 81. The pressure increase in chamber 81 causes leftward movement of piston 81 to operate front brakes 103. If, however, the vehicle is stationary, i.e. the pump 53 is inoperative, pedal depression causes passage of fluid from chamber 31 via constricted passage 65 and switch valve 61 to operate the brakes as before. If a failure occurs in the rear brake circuit the front brakes are still operable as piston-rod 25 may contact piston 87 and cause leftward movement thereof.
Patent GB-1153008-A (GB)
Title: Method of and apparatus for Measuring and Sorting the Individual Elements in a Semiconductor Wafer
IPC: G01R31/316
Filed: 1966-08-24
Abstract: 1,153,008. Programmed control of testing. TELEFUNKEN PATENTVERWERTUNGS G.m.b.H. Aug.24, 1966 [Sept. 18, 1965], No.37898/66. Heading G3N. Individual components of a semi-conductor wafer are scanned automatically and the data relating thereto is stored; the components are then automatically sorted into groups, determined by a characteristic which has been scanned in dependence on the data stored. In the embodiment, a semi-conductor wafer, comprising a plurality of components in a grid pattern, is fixed to a table which is movable, by an automatic programmed control device, in quadrature relative to a probe of an automatic measuring device by increments equal to the spacing of the components. The values measured by the probe are evaluated by the measuring device to determine the desired characteristics of the components e.g. current amplification factor, which are digitally recorded on a punched card. The wafer is then broken into the individual components which are retained in the grid pattern. Suction pincers are automatically positioned with respect to the wafer, in the same sequence as for the measurement, by control device responsive to signals from an instruction unit. The instruction unit is connected to a master clock which ensures the rhythmic feed of a set programme, determining the data forming the basis of the sorting, the punched card, bearing the evaluated characteristics, and the table bearing the wafer. It is stated that the punched cards can be replaced by punched or magnetic tape, or drum, core or plate stores.
Patent GB-1078317-A (GB)
Title: Polyurethane materials
Inventor: BLOMEYER FRIEDRICH
IPC: C08G18/08
Filed: 1965-09-06
Abstract: A non-caking mixture of P2O5 and a filler and/or pigment is added as water binding agent to a liquid or pasty, solvent containing or solvent-free, polyurethane, or at any stage in the preparation of said polyurethane, by the reaction of an organic polyisocyanate and a polyhydroxyl compound.  The fillers and pigments may be ZnO, MgO, CaO, chromatographic grade Al2O3, silicic acid, BaSO4 and BaMnO4, bentonite, montmorillonite, TiO2, chrome yellow talcum, zinc chromate, CaCO3, microtalcum and microasbestos.  Other known drying agents, e.g. triethylorthoformate, may be used in addition to the phosphorus pentoxide mixture.  The polyurethanes may be derived from polyethers, polyesters and epoxy resins by reaction with a polyisocyanate.  The polyurethanes may be used in both one component and two component lacquers.
Patent GB-1213063-A (GB)
Title: Apparatus for coking compacts or shaped bodies of fuel
IPC: C10B53/08
Filed: 1967-11-13
Abstract: 1,213,063. Apparatus for coking coal. L. & C. STEINMULLER G.m.b.H. 13 Nov., 1967 [12 Nov., 1966], No. 38031/70. Divided out of 1,213,062. Heading C5E. The apparatus described in the Parent Specification 1,213,062 is claimed.
Patent GB-884781-A (GB)
Title: Polyurethanes
IPC: C08J9/00
Filed: 1959-11-10
Abstract: Cellular polyurethanes are prepared from a mixture containing an organic polyisocyanate, water, an organic compound having at least two reactive hydrogens, a molecular weight of at least 500, an OH equivalent of 100 to 3,000, and an acid number of not more than 10, and an organo-silicon fluid containing at least one amino group per molecule there being an excess of -NCO groups over that required to react with all of the reactive hydrogens of the organic compound. Lists of suitable components are given, the organic compounds including polyethers, polythioethers, polyacetate and polyesters, whilst the polyisocyanates include the addition product of a polyhydric alcohol and a polyisocyanate, the reaction product of a polyisocyanate and an acetal, and polymers of polyisocyanates. Accelerators, e.g. tertiary amines; emulsifiers; pore regulators, e.g. paraffin or silicone oils; fillers; dyes; plasticizers and metal catalyst may also be present.  Specifications 769,680, 769,681, 769,682, 843,841 and 867,156 are referred to.ALSO:Cellular polyurethanes are prepared from a mixture containing an organic polyisocyanate, water, an organic compound having at least two reactive hydrogens, a molecular weight of at least 500, an OH equivalent of 100 to 3000, and an acid number of not more than 10, and an organo silicon fluid containing at least one amino group per molecule, there being an excess of -NCO groups over that required to react with all of the reactive hydrogens of the organic compound. Lists of suitable components are given, the organic compounds including polyethers, polythioethers, polyacetals and polyesters; whilst the polyisocyanates include the addition product of a polyhydric alcohol and a polyisocyanate, the reaction product of a polyisocyanate and an acetal, and polymers of polyisocyanates. Accelerators, e.g. tertiary amines; emulsifiers; pore regulators, e.g. paraffin or silicone oils; fillers; dyes; plasticizers, and metal catalysts may also be present.  Specifications 769,680, 769,681, 769,682, 843,841 and 867,156 are referred to.
Patent GB-1338298-A (GB)
Title: Light-sensitive diazo planographic printing plate
IPC: G03F7/016
Filed: 1971-08-16
Abstract: 1338298 Photographic materials for printing plates OCE -VAN DER GRINTEN N V 16 Aug 1971 [15 Sept 1970] 38342/71 Heading G2C A photo-sensitive material for producing printing plates comprises a support coated with a layer of water-insolubilized polyvinyl alcohol with more than 98% hydroxayl groups and an inorganic filler and then with a layer of colloidal silica and a 4-benzoylamino-2, 5-dialkoxybenzene diazonium salt. The support may be coated with layer(s) containg a polymer e.g. styrene-butadiene copolymer or melamine resin and a filler before applying the polyvinyl alcohol layer. The material may be imagewise exposed and developed with an phlorogulcinol solution to produce an ink-accepting dye image as disclosed in Specifications 1249382 and 1249381.
Patent GB-1141054-A (GB)
Title: Line oscillator for a television receiver
IPC: H03K4/32
Filed: 1966-08-26
Abstract: 1,141,054. Valve and transistor sawtooth circuits. INTERNATIONAL STANDARD ELECTRIC CORP. 26 Aug., 1966 [8 Sept., 1965], No. 38411/66. Headings H3P and H3T. In a line deflection circuit for a television receiver, a negative flyback pulse is fed from the output transformer 21 to the grid of the output valve 11 and is isolated from the transistorized line oscillator by means of a diode 7. This arrangement ensures that the line output valve 11 is blocked during the flyback period whilst diode 7 enables a low voltage transistor to be used at 1. Transistor 1 preferably has a resonant circuit 2, 3 in the base circuit but may be replaced by a blocking oscillator or multivibrator.