baber/WOPTO huggingface dataset:
Patent GB-935596-A (GB)
IPC: F02C5/12
Abstract: 935,596. Gas turbine plant. W. H. JONES. March 21, 1962 [March 20, 1961], No. 10016/61. Class 110 (3). In a gas turbine engine of the type comprising a series of combustion chambers disposed around a shaft coupling air compressor and turbine rotors together, each combustion chamber having a single pressure-actuated inlet valve associated with it for the purpose of admitting fuel and air simultaneously to the 'combustion chamber, each inlet valve has an axially extending bore formed in it and opening into the combustion chamber and pumping means associated with it whereby, during each opening movement of the valve, a charge of fuel is injected through the bore into the combustion chamber at the same time. as air is admitted to the combustion chamber. The gas turbine engine shown in Fig. 1 comprises a first-stage turbine rotor 14 during an air compressor rotor 11 and a second-stage turbine rotor 25 driving an output shaft 16. Each combustion chamber 12 has an air inlet valve 21, Figs. 1 and 2, lightly closed by a spring 45. Fuel is supplied through a duct 34 to a cylinder 27 at a rate which is controlled by a spring- loaded ball valve 38 opened to the required extent by a control rod 37. When the valve 21 opens to admit air to the combustion chamber, a piston 28 carried by the valve stem pumps the fuel from the cylinder 27 past a non-return ball valve 31 and through an axial bore 23 in the valve 21 and thence into the combustion chamber. On combustion of the mixture of air and fuel, the valve 21 is closed by the rise in pressure in the combustion chamber, and the combustion gases pass through a discharge opening 20 to drive the turbines. As the gases expand, the pressure in the combustion chamber falls and a momentary partial vacuum is set up, causing the valve 21 to open again. The cycle then re-commences. Glow plugs 48 for igniting the mixture are switched off when the engine has warmed up, the walls of the combustion chambers then being hot enough to cause ignition.
Patent GB-2278675-A (GB)
Title: Combustion chamber with separate combustion and vaporation zones
Inventor: ZARZALIS NIKOLAOS
IPC: F23R3/34
Filed: 1994-06-03
Abstract: A combustion chamber (1) for a gas turbine has a pilot stage and a main stage for low-emission lean-burn operation. The pilot stage is separate from the main stage and is formed by a flame tube (2) with an upstream first fuel injection means (3a) and a secondary combustion zone (7a). The main stage includes a vaporization chamber (4) and a combustion chamber (5), a second fuel injection means (3b) being provided at the upstream end of the vaporization chamber (4). The vaporization chamber (4), which is spaced from the combustion chamber (5), produces a homogenous fuel-air mixture which does not burn until in the combustion chamber (5). In lean-burn operation of the combustion chamber (1) this separate arrangement of the two chambers (4, 5) significantly reduces the formation of nitrogen oxides. For use in aircraft gas turbine engines the combustion chamber (1) preferably has the shape of an annular combustion chamber (1' Fig. 2b) having several main and pilot stages. A common burnout zone (8) is provided for combustion gases of the main and primary stages. <IMAGE>
Patent GB-2277192-A (GB)
Title: Discharge-excited laser apparatus
Inventor: HARUTA KENYU
IPC: H01S3/0971
Filed: 1994-06-03
Abstract: A discharge-excited laser apparatus, comprises at least one pair of discharge electrodes 216 and a solid-state switch 21, 211 through which a discharge energy is transmitted to a space between said discharge electrodes 216. The switch 21, 211 includes two or more switching elements installed on both sides of a virtual line drawn to pass through the discharge electrodes 216 when viewed in a section crossing the optical axis at a right angle. The switching elements are associated with heat radiator plates 22, 212, conductive plates 220, 221, 213, 214a charging capacitor 24 and a further conductive plate 26. <IMAGE>
Patent GB-2280150-A (GB)
Title: Stabilising marine lifting equipment
Inventor: MARTIN ROBERT
IPC: B66C23/53
Filed: 1994-06-20
Abstract: A system for performing marine lifting operations comprises a lift vessel (16) equipped with lifting gear (22, 24) and adapted to be coupled by means of a jib (26) to an adjacent vessel (12) which acts as a counterweight to stabilise the lift vessel while a load (10) is lifted from a barge (14). The lift vessel may be a pontoon, a tug or a dynamically positioned vessel. The jib may be adapted to be compressible and extensible, and its end may be mounted on a movable carriage on the lift vessel. <IMAGE>
Patent GB-2279823-A (GB)
Title: Resilient electrical contact
Inventor: MATSUOKA NORIYUKI
IPC: H01R13/115
Filed: 1994-06-28
Abstract: An electric contact 1 comprising a first resilient contact element 2 and a second resilient contact element 3 extending in an opposing relation to each other and being connected together 4 at one end thereof, the elements being provided with a first and a second press contact portions 7, 8 respectively, for resiliently clamping a lead pin 6 therebetween, the press contact portions being displaced with respect to each other axially of the lead pin, a spring portion extending from the first press contact portion to the connected and thereof being different in a length from a spring portion extending from the second press contact portion to the connected end thereof, and the spring constants of the resilient contact elements being generally equal. The equalisation is effected by reducing the width of element 2 evenly or progressively from the connecting portion 4. The lead pin 6 is inserted into a taper between the elements 2, 3 from the side (figure 1(c)) or the end (figure 5(A)). <IMAGE>
Patent GB-2284418-A (GB)
Title: Anti-inflammatory pyridine derivatives
Inventor: CROSSLEY ROGER
IPC: C07D401/06
Filed: 1994-11-25
Abstract: Compounds having the Z-configuration of formula:   <IMAGE> or salts thereof, wherein R represents an optionally substituted aryl or heteroaryl radical, R<1>, R<2> and R<3> each independently represent hydrogen, C1-C6 alkyl, C1-C6 alkoxy, (C1-C6 alkoxy)carbonyl, carboxy, hydroxy (C1-C6) alkyl, halogen, halo(C1-C6)alkyl, carboxy(C1-C6)alkyl, optionally substituted aryl or heteroaryl or optionally substituted aralkyl or heteroarylalkyl; n represents O, 1 or 2; R<4> and R<5> each independently represent hydrogen or a substituent selected from lower alkyl, optionally substituted aryl and optionally substituted arakyl or R<4> and R<5> are geminal C1-C6 alkyl substituents and R<6> is hydrogen or C1-C6 alkyl, possess antiinflammatory activity.
Patent GB-945519-A (GB)
Abstract: 945,519. Bridge circuits. ROBERTSHAWFULTON CONTROLS CO. April 4,1961 [April 29, 1960], No. 12041/61. Heading G1U. A circuit for connection to the output terminals of a null balance bridge-circuit comprises an indicator for connection to one output terminal of the null balance bridge, a phase discriminator circuit for connection to the outher output terminal of the null balance bridge, the indicator and the phase discriminator circuit being connected in series, and means for applying a voltage to the phase discriminator circuit which is in phase with and of the same frequency as the alternating voltage applied to the input of the null balance bridge. An inductance-capacity bridge 1 for measuring a capacity 12 has an input supplied from a generator 14 through a transformer 11, which has an additional winding 17 forming part of a phase discriminator circuit 16. The discriminator also contains two silicon diodes 18,19 connected in series across the winding 17 with their point of connection joined to one output terminal 2 of the bridge. The other output terminal 3 of the bridge is connected through the indicator 7 to the discriminator at 21. The diodes will only be able to conduct during the half cycles when the point 22 is positive and the point 23 is negative. If during these half cycles the output 2 is positive diode 11 conducts and the current through the indicator flows one way, if the output 2 is negative diode 18 conducts and the current through the indicator flows the other way, thus showing in which direction the bridge is out of balance. The inductance 24 provides a D.C. current path for the current that flows through the indicator.
Patent GB-2297924-A (GB)
Title: An incineration system
Inventor: COX STUART EDMOND
IPC: A47J36/38
Filed: 1995-02-18
Abstract: An incineration apparatus for exhaust gases from a food process, for example a chicken or fish fryer, comprises an inlet pipe 1 leading to a separator 5, where at least some of the solid and liquid particles in the indrawn flow are separated-out. The flow of exhaust gases with remaining particles passes along ducting 4b through a filter 14 (for solid and liquid particles, especially frying oil droplets), a heat exchanger 12 and ducting 13 to a low-temperature combustion chamber 15. The ducting 13 decreases in crosssection to increase the flow velocity before it enters a short, fat, substantially conical, gas flame of a burner 16 in the chamber 15. The combustion product flow passes through a perforated plate 26, via ducting 17, to a catalytic convertor 18. The outflow from the convertor 18 passes through the heat exchanger 12 and a flow-inducing fan 20 to ducting 21 and a chimney 22. For compactness, the interiors of the chamber 15, the convertor 18 and the heat exchanger 12 are aligned with each other, and the projected entry areas of the convertor 18 and the exchanger 12 are substantially equal to each other.
Patent GB-2285973-A (GB)
Title: Beneficiation of flake graphite
Inventor: GRONDIN TONY
IPC: C01B31/04
Filed: 1994-08-02
Abstract: This invention concerns a method of beneficiating graphite to a higher purity level by dislodging the impurities from graphite attrition preferably in an attrition cell which has at least one set of opposing pitched impellers. A pulp is formed preferably essentially consisting of a flake graphite:attrition adjuvant:water in a ratio of 1:2:0.8 to 10 and this pulp subjected to attrition in an attrition cell. <IMAGE>
Patent GB-2303690-A (GB)
Title: An oxy:fuel melting furnace
Inventor: GUBB LEIGH FRANCIS
IPC: C21B13/14
Filed: 1995-07-21
Abstract: An oxy:fuel melting furnace (2) comprising a rotatable furnace body (4), a normally stationary non-rotatable furnace roof (6) for fitting on the furnace body (4), dynamic sealing means (8) for dynamically sealing the furnace roof (6) on the furnace body (4) such that the furnace body (4) can rotate with respect to the furnace roof (6), tiltable support means (10) for supporting the furnace body (4) such that tilting of the support means (10) causes tilting of the furnace body (4) for tapping and slagging, moving means for moving the furnace roof (6) up and down with respect to the furnace body (4), heating means (12) which is mounted on the furnace roof (6) and which is for providing heat for the melting of material such as scrap steel and ore, and pre-heater means (14) for pre-heating the material prior to its introduction into the furnace body (4), and the oxy:fuel melting furnace being such that at least one of the heating means and the pre-heating means is such that it burns oxy:fuel. <IMAGE>
Patent GB-2303819-A (GB)
Title: Portable mortice machine
Inventor: DAVISON CRAIG
IPC: B27F5/12
Filed: 1995-08-01
Abstract: A portable hand held mortice machine has a powered driving body (A), a variety of releasably mounted mortice bits (B) which lock into place when mounted, and are to be used for the purpose of forming mortice holes. Where practical, a releasably mounted adjustable guide (not shown) may be used. The mortice machine when in operation is used in similar fashion to a power drill to form square edged holes or slots which will aid in the installation of a variety of joinery components and the like.
Patent GB-2304745-A (GB)
Title: Brick laying frames
Inventor: HOWARD MAURICE EDWIN
IPC: E04B2/02
Filed: 1995-09-08
Abstract: A frame 21 which holds and aligns bricks during bricklaying and becomes incorporated in a completed course of brickwork comprises a base spacer 22 and at least one end spacer 23 which extends perpendicularly from the base spacer. Each spacer 22,23 in use presents a void 30 for receiving mortar applied to cement together adjacent bricks and aligns and holds a brick 20 in position prior to setting of the mortar. The frame also spans gaps between neighbouring bricks on an exposed surface of the brickwork. The frame for one course of bricks has alignment means 32 for aligning another frame when laying a subsequent course of bricks, e.g. a socket in a lower frame may receive a stud in an upper frame to join them together.
Patent GB-2295154-A (GB)
Title: Hydrogenation of polymers
Inventor: AUSTGEN DAVID MICHAEL
IPC: C08F8/04
Filed: 1995-11-15
Abstract: A method for hydrogenating a polymer containing ethylenic unsaturation comprises providing a solution or suspension of the polymer with a Group VIII metal alkoxide or carboxylate and metal alkyl hydrogenation catalyst; exposing the polymer solution or suspension to hydrogen for a time sufficient to hydrogenate greater than 90 percent of the ethylenic unsaturation; adding additional Group VIII metal alkoxide or carboxylate and metal alkyl hydrogenation catalyst to the polymer solution or suspension; mixing the solution or suspension with an aqueous solution of an acid; and separating a hydrogenated polymer solution or suspension that contains less than 0.8 percent by weight water from the aqueous solution.
Patent GB-2296499-A (GB)
Title: Water-blown polyurethane sealing devices and compositions for producing them
Inventor: NARAYAN THIRUMURTI
IPC: C08G18/79
Filed: 1995-12-21
Abstract: A prepolymer composition particularly suitable for use in polyurethane compositions for producing microcellular molded articles particularly suitable for use as sealing devices is the result of reacting an isocyanate blend (a) having     (i) 0 to 10 pbw 2,4'-diphenylmethane diisocyanate;   (ii) 30 to 80 pbw 4,4'-diphenylmethane diisocyanate;   (iii) 1 to 10 pbw of a mixture of uretonimine with from 10 to 70 parts by weight of a polyol (b) having a number average molecular weight of between 1000 and 10,000, and a hydroxyl number of between 10 to 75. The resulting isocyanate prepolymer (I) has a free NCO of less than 20% and a viscosity of from 200 to 1000 cPs.
Patent GB-2302981-A (GB)
Title: Magnetic tape apparatus for eliminating slack when changing winding direction
Inventor: NAWA IKUICHIRO
IPC: G11B15/30
Filed: 1996-06-26
Abstract: A magnetic tape apparatus of the rotary drum kind includes a tension regulating unit 58, 59 which regulates the tension of the magnetic tape when the magnetic tape is run, the tension regulating unit pressing the magnetic tape at a first position in a tension-applying direction. A slack preventing unit, eg an extra spring 63, exerts a rotating force on the tension regulating unit at a second position such that the rotating force exerted at the second position acts on the tension regulating unit at the first position to further press the magnetic tape in the tension-applying direction, thus providing further force to prevent slack in the magnetic tape when changing a tape winding direction of the magnetic tape.
Patent GB-2316980-A (GB)
Title: Automatic propeller blade control
Inventor: VAGG BERNARD WILLIAM
IPC: B64C11/34
Filed: 1996-09-03
Abstract: An aircraft or model aircraft propeller blade is either mounted to swivel against a stop, about an axis near its leading edge and extending at 90 degrees to the axis about which the propeller rotates, or the blade is incorporated near the tip of a fixed pitch blade, the concave surface of which acts as a stop. The blade relies upon external air pressure to cause it to swivel. Scimitar-like blades may be used in an electrically powered model aircraft.
Patent GB-2317320-A (GB)
Title: Rotary mower
Inventor: O'NEIL BELL CHRISTOPHER
IPC: A01D34/82
Filed: 1996-09-24
Abstract: A rotary lawn mower, has a grass alignment device 9 fitted towards the back of the mover, relative to the direction of travel, and protruding below the main body of the mower 1 to align the cut grass 10 with the direction of travel 11 of the mower. The purpose of the device 9 is to provide the same striped effect on a lawn as a more expensive cylinder mower.
Patent GB-2320080-A (GB)
Title: Fluid control valve
Inventor: DARLING BRIAN JAMES
IPC: F04B49/22
Filed: 1996-12-07
Abstract: A fluid control valve (10) for a fluid pump (12) comprises a housing (18) having a longitudinal bore (20). An outlet port (16) connects with the bore for delivering pressurised fluid. An inlet port (42) connects with the bore for receiving pressurised fluid. A piston (26) is slidable within the bore to control flow of fluid from the inlet to the outlet. The piston has at least two axially spaced lands (32, 34) engaging surface (36) of the bore, and at least one circumferential groove (44, 46) in each land. Each groove has a first side (48) defining the opening of the groove, a second side (50) defining a radially inner surface, and a third side (52) connecting the first and second sides. The third side is at an obtuse angle to the first side and at an acute angle to the second side. An undercut region (56) in each groove traps any particles in the hydraulic fluid. Grooves (44, 46) retain hydraulic fluid for lubrication.
Patent GB-2312061-A (GB)
Title: Semiconductor memory device and method of operation
Inventor: LEE JOO SOCK
IPC: H01L27/11
Filed: 1997-04-09
Abstract: A semiconductor memory device is described which is capable of reducing power consumption. The semiconductor memory device has a memory cell array divided into cell array blocks 40A-40C and applies different voltage levels to the cell array blocks through a voltage divider. The voltage difference between the supply voltage level of each of the cell array blocks and a ground voltage level of each of the cell array blocks is (1/N)* Vdd voltage, where N * <------ solidus * 2 is the number of cell array blocks. The different voltage levels are provided by a transistor circuit including a current mirror circuit (Q12, Q15, Q16 and Q19, Fig 6).
Patent GB-2313420-A (GB)
Title: A friction clutch having a pressure plate with vibration damping means
Inventor: GRUPP MATTHIAS
IPC: F16D13/58
Filed: 1997-05-20
Abstract: A friction clutch 1 comprises an automatic wear adjuster 16 which shifts seats 11, 12 axially toward a counter pressure plate 6 to an extent determined by sensor spring 13. Damping means 27, which may be integral with sensor 13, has curved tongue-like resilient protuberances 13e that are in frictional engagement with portion 3b of pressure plate 3. This frictional engagement opposes stray radial and/or axial movements, caused by high frequency low amplitude vibrations when the clutch is engaged, of the pressure plate 3 relative to the sensor 13 and clutch spring 4. During disengagement the pressure plate moves axially away from the counter pressure plate 6 and the protuberances 13e slide against portion 3b causing a frictional force having a magnitude dependent upon their friction coefficient which may be varied according to the portions surface finish, eg an unfinished or partially finish or highly finished surface, and/or the stiffness of the protuberances 13e.
Patent GB-2313442-A (GB)
Title: Monitoring the relative position of moving machine parts
Inventor: BRAUN PAUL-WILHELM
IPC: G01D3/08
Filed: 1997-05-22
Abstract: A device for measuring the relative position of two parts comprises at least two code bearing segments 1a, 1b each with equally spaced code marks scannable by sensors 4, 8 arranged as to minimise errors when traversing from one code bearing segment to the next. The first sensor is connected through a first comparator 12 to a counter 5. Likewise the second sensor is connected through a second comparator to a second counter 11. Each signal from the sensor is compared against a first and second test signal 12', 10' to determine a transition of the respective sensors from one code bearing segment to the next. Upon detecting a transition under the first sensor, the first counter is disconnected from the first comparator and the second counter is connected to the second comparator. Similarly the first counter is reconnected and the second counter disconnected when a transition is detected at the second sensor. The two counts are summed in a transfer unit 13.
Patent GB-2315867-A (GB)
Title: Electromagnetic induction well logging
Inventor: FORGANG STANISLAV
IPC: E21B41/00
Filed: 1997-06-30
Abstract: A method of measuring the conductivity of earth formations 4 penetrated by a wellbore 2 comprises selectively passing an alternating current through transmitter coils inserted into the wellbore. Each of the transmitter coils has a magnetic moment direction different from the magnetic moment direction of the other ones of the transmitter coils. The alternating current includes components at first and second frequencies, the amplitude at the first frequency having a predetermined relationship to the amplitude at the second frequency. The method includes selectively receiving voltages induced in a receiver coil having a sensitive direction substantially parallel to the axis of the corresponding transmitter coil through which the alternating current is passed. A difference in magnitudes between a component of the received voltage at the first frequency and a component of the voltage at the second frequency is measured, and conductivity is calculated from the difference in magnitudes of the components of the received voltage at the two frequencies.
Patent GB-2332361-A (GB)
Title: Preventing overturning or displacement of table articles
Inventor: PURCHASE DARRELL KENNETH
IPC: A47G23/03
Filed: 1997-10-22
Abstract: Table articles such as drinking glasses, cups, plates, cutlery are kept in the position required without spillage or breakage taking place, by placing magnets into the bases of the above listed items or in a supporting surface such as a table top, beer mat, table cloth or drip towel. A receptive metal or other material is provided in the other of the item and support to respond to the magnet.
Patent GB-2315229-A (GB)
Title: Internal mixers
Inventor: BROWN CHRISTOPHER JOHN
IPC: B29B7/18
Filed: 1996-05-13
Abstract: An internal mixer comprising at least one rotor supported to rotate about a predetermined axis within a mixing chamber, at least one projection mounted on the or each rotor and extending towards an internal wall of the chamber, and means for rotating the or each rotor about its axis, the said at least one rotor defining projection edges of different geometries and being rotated such that each of the said edges is a leading edge in at least part of a mixing cycle, whereby material within the chamber is subjected to different mixing actions by the edges of different geometries.
Patent GB-2317127-A (GB)
Title: Resin coated fastener
Inventor: DUFFY RICHARD J
IPC: B05B14/10
Filed: 1995-01-25
Abstract: The present invention relates to a reusable prevailing torque, self-locking fastener (60). The fastener (60) comprises a fastener body (62) having a continuous internal cylindrical surface (64) and a continuous external cylindrical surface (66); ```a first set of threads (68) disposed on said internal cylindrical surface (64); and ```a second set of threads (70) disposed on said external cylindrical surface (66). The fastener (60) further comprises first and second patches (72,74) of resilient thermoplastic resin material adheringly applied to said first and second sets of threads respectively by spraying a stream of powdered resin onto said first and second sets of threads (68,70) that have been preheated to a temperature above the melting point of said resin. The present invention thereby provides an insert which is both less expensive to produce and more effective than conventional self-locking fasteners.