baber/WOPTO huggingface dataset:
Patent GB-1158839-A (GB)
Title: Improvements in or relating to E.H.T. voltage Generators
Inventor: DUDDRIDGE GEOFFREY
IPC: H04N3/185
Filed: 1967-12-20
Abstract: 1,158,839. E.H.T. generators. STANDARD TELEPHONES & CABLES Ltd. 20 Dec., 1967, No. 57881/67. Heading H2F. An E.H.T generator comprises a thermionic valve 20 periodically driven into conduction by a sawtooth voltage on its grid and coupled via a transformer 21 to a rectifier 2, and including a voltage regulator comprising a positive feedback network 11 arranged to change the grid bias of valve 20 in response to change in E.H.T. output current and a negative feedback loop 28 arranged to maintain the loop gain less than unity. The valve 20 is preferably the line output valve of a colour television receiver, components 4 representing the cathode-ray tube. Diode D2 ensures that the stabilization is a function only of the reverse current of the voltage multiplier 2, the reverse current being rectified by diode D1 and stored in capacitor C1. In Fig. 1 (not shown), the stabilizing signal is derived by a capacitor coupled between the anode of D1 and the first stage of the multiplier 2. In Fig. 3 (not shown), the stabilizing circuit 11 is connected in series with the lower end of a separately wound EHT winding of transformer 21. In Fig. 4 (not shown), R1 is replaced by a series chain of selenium rectifiers so that the stabilization characteristic is independent of the voltage/ current characteristic of the selenium E.H.T. rectifiers 2.
Patent GB-1448830-A (GB)
Title: Process for preparing an exhaust catalyst
IPC: B01J37/02
Filed: 1973-12-19
Abstract: 1448830 Oxidation catalysts W R GRACE & CO 19 Dec 1973 [19 Dec 1972] 58908/73 Heading B1E [Also in Division C1] Catalysts are prepared by impregnating a support comprising silica and/or alumina or zirconia with a solution of a Ce<SP>III</SP> salt to give a cerium oxide content (calculated as Ce 2 O 3 ) of 1-50 wt %, calcining the impregnated support in air at 500-2000F, reimpregnating with a Ce<SP>III</SP> salt and either before or simultaneously with this impregnation, impregnating with a solution of a Pt, Pd, Rh and/or Ru salt to give a noble metal content of 0.01-5 wt % (the percentages being based on the weight of the support) and heating the thus impregnated support to 900-1250F. In a modification the first impregnation step is replaced by the coating of a monolithic carrier with a slip of active alumina containing 5-50 wt % of Ce (calculated as CeO 2 ) in the alumina.
Patent GB-1329736-A (GB)
Title: Semiconductor devices
IPC: H01L21/00
Filed: 1970-12-18
Abstract: 1329736 Semi-conductor device manufacture INTERNATIONAL BUSINESS MACHINES CORP 18 Dec 1970 [30 Dec 1969] 60211/70 Heading H1K In making a semi-conductor device layers of first and second insulating materials are successively formed on a semi-conductor substrate, a plurality of apertures etched in the upper (second) layer using an etchant to which the first layer is resistant, at least one aperture extended down to the semi-conductor using a second etchant to which the second layer is resistant, a device region formed beneath this aperture and the remaining apertures then extended to the substrate with the second etch. In the embodiment the first and second layers are of silicon dioxide and nitride respectively and their respective etchants a mixture of ammonium fluoride and hydrofluoric acid, and ammonium hypophosphate. The apertures are defined by photoresist and etching steps and arsenic is diffused at 1000‹ C. for 85 minutes in a sealed capsule into the area exposed by the first extended aperture to form an emitter zone. In the final step contact metal is deposited overall to extend to the semi-conductor via the extended apertures and etched to define the contacts.
Patent GB-2002191-A (GB)
Title: Electronic pulse generators
IPC: H03K17/12
Filed: 1978-06-30
Abstract: A fast-rise high current pulsing circuit includes a transistor, means for connecting the load between the collector of the transistor and a direct- current power supply, and a transformer having a first secondary winding connected to carry the base current of the transistor and a second of the said secondary winding connected to carry either the emitter current or the collector current of the transistor so that voltages induced in both secondary windings will cooperate additively to control the development of collector current pulses in the transistor. A battery- powered converter may provide appropriate power supplies to the circuit, e.g. in a hand-held laser illuminator. <IMAGE>
Patent GB-2004393-A (GB)
Title: Improvements in material processing methods
IPC: G01N21/31
Filed: 1978-09-14
Abstract: In a process for monitoring and/or controlling the moisture content of a material 64, such as powdered milk, falling from a chute of a material processor (46, Fig. 1 not shown) onto a window 58 on a sight tube 60, the moisture content of a selected number of samples of the processed material is measured by an apparatus employing an infra red source and a filter wheel 88 containing two interference filters 87. An air nozzle 66 connected to a air source removes each sample. A running average value 10 over the selected number of the most recent sample moisture content measurements is used to control a drier unit 20 of the material processor (Fig. 1 not shown) and to supply an analogue indicator 110, a digital indicator 108 and a tape printer 111. <IMAGE>
Patent GB-2006238-A (GB)
Title: Anion exchanger material and method of preparing the same
IPC: C08G65/48
Filed: 1978-09-21
Abstract: An anion exchanger is based on a poly(arylethersulfone) of formula   <IMAGE> where R<1> and R<2> are each hydrogen atoms or alkyl or phenyl groups, x is 1, 2 or 3 and y is 0 or 1, and having N- substituted alkylamino or alkylammonium groups of formula   <IMAGE> where R<3>, R<4> and R<5> are alkyl or hydroxyalkyl groups, n is an integer and Y theta  is an anion, substituted on aromatic rings separated from the sulfone groups by at least one aromatic ring. The anion exchangers are prepared by reacting a poly(arylethersulfone) with a halogenodialkylether or a mixture of HCl and a para- formaldehyde to form a halogenoalkylated polysulfone and aminating said halogenoalkylated polysulfone.
Patent GB-2009777-A (GB)
Title: Low-Temperature Carbonisation Tar of Low Dust Content
IPC: C10B49/18
Filed: 1978-11-17
Abstract: Dust and tar-containing gas and vapour 14 produced in the low temperature carbonisation of a finely granular material such as coal or oil shale is fractionally condensed in a first cooling stage 7 to produce a dust- laden tar 15 which is recycled to the carboniser 1 and a tar 18 of low dust content is recovered from a downstream electrostatic precipitator or washer 9. The carbonisation is carried out (e.g. at 500-600 DEG C) by contacting the material with a hot circulating granular heat carrier 20 in a mixing screw 1; coarse dust is removed from the vapour streams 13a and 13b in a cyclone 6 to leave the stream 14 which can be scrubbed and cooled to 150-240 DEG C by spraying with recirculated tar in the first cooling stage 7. <IMAGE>
Patent GB-2010284-A (GB)
Title: Coating compositions
IPC: C09D11/101
Filed: 1978-11-20
Abstract: A process for the preparation of an esterified resin for ultraviolet light curable coating compositions which comprises reacting an ethylenically unsaturated five-membered cyclic compound, such as cyclopentadiene, with a compound having both at least a double bond and hydroxyl group in the molecule, such as allyl alcohol, to obtain a hydroxyl group-containing resin which is then esterified with a carboxyl group-containing benzophenone derivative and, if desired, further esterified with an unsaturated carboxylic acid thereby to obtain the esterified resin. This invention also relates to the esterified resin so obtained and ultraviolet light curable coating compositions containing the same.
Patent GB-2012460-A (GB)
Title: Apparatus for Processing a Digitized Analog Signal
IPC: G11B20/18
Filed: 1979-02-02
Abstract: An apparatus for processing a digitized analog signal to be recorded or transmitted enables error correction to be effected, particularly for eliminating dropouts in a tape- recorded digitized audio signal. The digitized analog signal is formed into blocks A, B, A and B blocks alternating. A third, C, block is formed from each pair of A and B blocks by applying a simple parity check across the blocks. All blocks have a cyclic redundancy check code appended to them. On reception or playback, the check codes make it possible to detect any block which is in error. If an A or B block is in error, erroneous bits therein are corrected by use of the parity check across blocks A, B and C. The blocks can be compressed and serialized before recording or transmission, preferably in sets such that there is a set of A blocks, a set of B blocks, and a set of C blocks, and so on in cyclic sequence, the sets being large enough to ensure that a dropout is unlikely to spread across corresponding A and B blocks. <IMAGE>
Patent GB-2041747-A (GB)
Title: Plastic Christmas tree
IPC: A47G33/06
Filed: 1979-02-06
Abstract: The invention relates to a new type plastic Christmas tree which comprises a tree trunk mounted on a supporting base, an upper disc with notched peripherial ring, a lower notched disc, a tree top and branch panels, wherein each branch panel further comprises a wrap and small branches loaded with leaves and so arranged to form, in cooperation with the upper disc and the lower disc, a cut-top circular cone with branches flare outwardly and orderly; the tree top further comprises a trunk and small branches loaded with leaves and tapering upward to an apex with the branches flare outwardly and orderly; the tree trunk further comprises a lower trunk section mounted on a supporting base and a mid-section trunk loaded with the upper disc and the lower notched disc and mounted on the lower trunk section by insertion. A conical Christmas tree is formed by mounting the tree top on the trunk and hooking the branch panels onto the upper disc provided with hooking holes and resting the same in the notches provided on the periphery of the notched disc. <IMAGE>
Patent GB-2014309-A (GB)
Title: A Method of Determining the Drift of a Gyro of a Vehicle Position Determining System, and an Apparatus Operable with the Method
IPC: G01C21/12
Filed: 1979-02-12
Abstract: A method of determining the unknown drift of a gyro of a system for determining the position of a vehicle, involves the taking of a dead reckoning measurement to establish a position PD which is subject to error due to the unknown drift D and an additional dead reckoning measurement with a predetermined drift value DK to establish a position PK. The unknown drift D is determined from the coordinates of the true position PS and the positions PK and PD. The invention also includes a navigation apparatus for determining the position of a vehicle which comprises a directional gyro and means for generating a predetermined drift value employing which the method to determine the gyro drift. <IMAGE>
Patent GB-2019214-A (GB)
Title: Anti-diabetic use of anthranilic acid derivatives
IPC: A61P3/08
Filed: 1979-04-18
Abstract: Pharmaceutical compositions containing anthranilic acid derivatives of formula I,   <IMAGE>  in which  R0 is fluorine, chlorine, bromine, nitro or trifluoromethyl,  R is hydrogen, C1-6alkyl or C2-4 alkanoyl, and  R1 is hydrogen or C1-6alkyl, provided that   a) when each of R and R1 is hydrogen, R0 is other than 5-chloro; and   b) when R is acetyl and R1 is hydrogen, R0 is other than 5- or 6-chloro, 5-bromo or 5-trifluoromethyl, are indicated for use in treating diabetes.
Patent GB-2028328-A (GB)
Title: Fluorine-containing 1,3-dienes, process for their preparation and polymers thereof
IPC: C07C21/19
Filed: 1979-08-10
Abstract: New 1,3-dienes have the formula   <IMAGE> in which Rf is a C1-22 perfluoroalkyl group and each of R<1>, R<2>, R<3> and R<4> is hydrogen, or a C1-10 alkyl, cyclohexyl, benzyl, phenyl, naphthyl, (C1-5 alkyl) phenyl or (C1-5 alkyl) naphthyl group.   The compounds are prepared by reacting alkenes of the formula Rf-CF2-CR<1> = CR<2>-CR<3>R<4>X in which X is Cl, Br or I with a metallic halogen- acceptor, preferably zinc/copper, in an inert, aprotic solvent at 40 to 150 DEG C. Polymers of the 1,3-dienes are thermally and chemically stable and oil- and water-repellent, and may be elastomeric or vitreous.
Patent GB-2030071-A (GB)
Title: Making assemblies of bottomless paper pots
IPC: A01G9/10
Filed: 1979-08-14
Abstract: An apparatus for making collapsed assemblies of a plurality of bottomless paper pots comprises a paste applying device (2) for applying transverse bands of paste at longitudinally spaced intervals to a web (M) which has been formed by partially transversely overlapping and pasting a plurality of strips of flattened tubes, a cutter (41) for transversely severing the web (M) into pieces (N), a reversing device (50) having carrier tables for the cut pieces (N) alternate ones of said carrier tables being rotatable for turning alternate pieces (N) received by the device (50) through 180 DEG  in their own plane, and serrated delivery and pressing wheels (87) for depositing the pieces (N) on edge on a table (89) and pressing the thus delivered pieces together so that they become adhered to one another by the previously applied paste. <IMAGE>
Patent GB-2029892-A (GB)
Title: Securing straps
IPC: A44B11/18
Filed: 1979-08-22
Abstract: An arrangement for securing a strap, particularly a binding strap, to a structural part, has a region where the strap doubles back on itself to form two layers, there being three arms 3, 4, 5 for guiding and supporting the strap; a first of the arms (eg 4) resting in contact with the inner surface of an endloop 12 of the strap; a second of the arms having a portion of the strap slung at least partly around it in such a way that when tension is applied to the projecting end this portion of the strap squeezes a further, inner portion 9 tightly against the surface of the second arm. One of the arms 3 is fixed to the structural part, or is a part of it, the other two arms 4, 5 being opposite portions of an approximately oval clenching ring 6, made of round- section bar, which is in itself separate from the structural part but is attached to it, when the parts of the arrangement have been assembled together by slung-around portions of the strap. The loop may be formed over the bar not formed by the ring 6, Fig. 9. Other embodiments define more elaborate threading arrangements. <IMAGE>
Patent GB-2051632-A (GB)
Title: Improvements in metal bending
IPC: B21D7/022
Filed: 1979-08-24
Abstract: A desired angle of bend is set into a tube bending apparatus comprising a fixed former 3 a bending arm 12 with adjustable bar 13, by inserting pin 8 into a selected pair of aligned holes 7 in flanges on the former periphery. <IMAGE>
Patent GB-2032653-A (GB)
Title: Thermally actuating device
IPC: G05D23/24
Filed: 1979-09-07
Abstract: A thermally actuated radiator valve includes a positive temperature coefficient thermistor (22) and a thermally responsive unit (17) including a mass (20a) of thermally expansible semisolid material packed in a casing (18) and heated by the PTC thermistor to expand to drive a piston rod (20) inserted in the casing. The movement of the piston rod is transmitted to a valve member (8) to open the valve. A negative temperature coefficient thermistor (24) is mounted on the casing (18) in thermally conductive relation, to detect the displacement of the valve member in terms of the temperature of the thermal unit. A control circuit (Fig. 5 not shown) is responsive to the detected displacement of the valve member to energise the PTC thermistor so as to put the valve member at a desired position. The control circuit includes a further NTC thermistor (37) for sensing room temperature. <IMAGE>
Patent GB-2033554-A (GB)
Title: Compressed gas cartridges
IPC: B65D83/14
Filed: 1979-09-12
Abstract: The invention is concerned with an arrangement for creating a propellant force and includes a reusable cartridge 34 for a pressurised gaseous medium and a plunger 26 for breaking a seal 43 of the cartridge. In an application these components are used in a hypodermic dart, inertia which results from the dart striking an animal, causing relative movement to break the seal. The gaseous medium released then expels a drug from the dart. In another application the components are located in a gun and operation of the gun causes the relative movement. The gaseous medium released is under such a pressure as to propel a bullet from the gun. <IMAGE>
Patent GB-2032956-A (GB)
Title: Bioreactor and Method of Performing Bioreactions
IPC: B01J19/18
Filed: 1979-09-21
Abstract: A bioreactor possesses a reaction chamber formed by a substantially ring-shaped tube or pipe having a substantially circular cross-sectional configuration. A hollow shaft (12), carrying a drive screw (14), is arranged within the reaction chamber tangentially with respect to the centre line (11) of the pipe (2). This hollow shaft is operatively connected with a drive motor and, furthermore, is provided with outlet connections or studs communicating with a gas source. The pipe 2 is provided over part of its circumference with an equally circular or ring-shaped jacket or shell through which flows a heat exchange medium, namely a heating or cooling medium. <IMAGE>
Patent GB-2048475-A (GB)
Title: Oscillating crystal transducer systems
IPC: G01L1/16
Filed: 1979-09-27
Abstract: In an oscillating crystal transducer system, a single plate-like crystal (21) has two oscillating portions defined by electrodes (22, 23). A force is applied by two seatings (27, 28) situated at opposite sides of the edge of the crystal in a direction generally along the face of the crystal. The difference in the changes in the oscillating frequencies of the crystal portions resulting from force application provides a measure of the force. The two crystal portions are selected and arranged so that the signals compensate for temperature variations in the response of the crystal portions. In one embodiment, the force applied to the crystal is derived from pressure applied to a diaphragm. <IMAGE>
Patent GB-2037921-A (GB)
Title: Improvements in or Relating to Flexible Hoses
IPC: F16L37/00
Filed: 1979-10-31
Abstract: This invention relates to hoses of flexible material having a lateral take- off device comprising a tubular stub having an internal socket 2 abutting the internal face of the wall of the hose 3 and an external clamping washer 4. The hose is reinforced locally at the take-off point by means of a non-extendable ring 5 encircling the hose over an axial length which is at least equal to the diameter of the socket 2. <IMAGE>
Patent GB-2045094-A (GB)
Title: Respirators
IPC: A62B18/08
Filed: 1980-02-22
Abstract: A respirator, particularly one of the type comprising a head enveloping hood, a substantially rigid face covering visor and an oronasal mask carried within the visor is provided with a fluid sustenance intake facility comprising a tube penetrating the respirator in sealed manner but movable with respect thereto to bring the end of the tube within the respirator from stowed to mouth-engaging locations.
Patent GB-2070652-A (GB)
Title: Apparatus for controlling the transverse movement of a fabric supporting carriage in a quilting machine
IPC: D05B11/00
Filed: 1980-02-29
Abstract: A fabric supporting carriage in a quilting machine is coupled to a d.c. electric motor M for transverse movement of the carriage by a rack and pinion arrangement and the motor is fed by width modulated current pulses having fixed amplitude under control of a programmable microcomputer P, the width of the pulse being established by a comparator CP eg acting through gates A and switches T and R, the polarity of the pulse and hence direction of movement being determined by the microcomputer by means of an inverter A4 whereby the appropriate gate and switches are actuated. <IMAGE>
Patent GB-2076037-A (GB)
Title: Wall block
IPC: E04C2/38
Filed: 1980-05-17
Abstract: A modular wall block comprises a frame D at least one side of which is covered by a panel E, the panel being secured to the frame by means of rivets, the frame having rivet holes C by means of which the block may be joined to other such blocks to form a wall. The blocks are easy to join together to form walls for refineries, chemical fire and blast walls, heat treatment chambers etc. <IMAGE>
Patent GB-2049430-A (GB)
Title: Fungicidal compositions of low phytotoxity containing cuprammonium carboxylates and metal carboxylates
IPC: A01N37/02
Filed: 1979-05-30
Abstract: The present invention relates to a water-based fungicidal composition of low phytotoxicity containing cuprammonium complexes of carboxylic acids and an alkaline earth metal, zinc or manganese carboxylates. The compositions are useful for protection of crops such as vines, coffee, tea, tobacco, peanuts, potatoes, apples, pears, cereals and hops against fungal infections due to their low phytotoxicity. In addition they may be used as a wood preservative, to sterilise fungus infected walls and masonry, as a paint biocide, to prevent mildew on fabrics and to counteract growth of algae and marine fouling. Because they are water based they are relatively easy to handle and free from fire-hazards and environmental problems associated with fungicides based on organic solvents.
Patent GB-2052360-A (GB)
Title: Improvements in or relating to manufacture of reinforced hose
IPC: B29C48/09
Filed: 1980-06-03
Abstract: The hose comprises an inner liner 11 of elastomeric material, a reinforcement structure 13 and an outer cover 15 of elastomer. The outer cover 15 is formed by extrusion and the heat imparted to the assembly of liner 11 and reinforcement structure 13 during said extrusion is utilised to effect simultaneously bonding of the liner 11 to the reinforcement structure 13, either by activating an adhesive on the liner and/or the reinforcement, or by softening of the liner. <IMAGE>
Patent GB-2059990-A (GB)
Title: Enhancement of the sensitivity of viable microbial cell count by bioluminescent assay of ATP and its use for identification of microbes by means of a short incubation in nutrient media
IPC: C12Q1/06
Filed: 1980-07-22
Abstract: A method of increasing the sensitivity and accuracy of the measurement of viable microbial cells by the bioluminescent assay of ATP by means of activating the metabolism of inactive viable cells and by increasing the number of microbial cells or biomass during a short incubation period in a microbiological nutrient medium. The utilization of a short incubation of the sample in specific nutrient media that support or prevent the growth of particular species of microbes allows the detection and identification of specific species in a few hours.
Patent GB-2059550-A (GB)
Title: Cooker Control Means
IPC: F24C3/12
Filed: 1980-09-08
Abstract: Control means for controlling the operation of a gas-fired cooking stove cooking stove comprises a timing mechanism (10) which is connected to a gas valve (11) to which, in use, gas will flow from a thermostat control (14) and from which gas will flow to a burner (20) of the cooking stove. The timing mechanism has a manually operable control member (12) which can be set either to a time control position in which the gas valve is opened by the timing mechanism to permit a relatively high rate of gas flow for a determined time, dependent upon the setting of the timer (10), and at the end of which the gas valve (11) assumes a position in which there is a relatively low rate of gas flow through the valve via throttle 17 only, or alternatively the manual control member (12) can be set to an 'on' position in which the gas valve (11) will remain in its open position corresponding to the high rate of gas flow until either said manually operable control member or the thermostat control is turned to an 'off' position. <IMAGE>