baber/WOPTO huggingface dataset:
Patent GB-2159609-A (GB)
Title: Gun sights
Inventor: DE ATH MERVYN CHRISTOPHER
IPC: F41G3/06
Filed: 1979-01-26
Abstract: In a tank gun sighting system there is a visual sight 2 having a boresight mark permanently aligned with the gun and an electronic aiming mark is superimposed on the visual target scene, the aiming mark being controllable by the gunner with effectively zero inertia for laying onto the target very quickly. The gun control equipment 1 is directed by a signal which is the difference between the aiming mark off-boresight signal and the gun movement signal derived from a rate gyro in the gun control loop. The aiming mark is thus stabilised on the target scene, and in particular on the target, as the gun slews round to reduce the boresight/aiming mark error. An aim-off signal is calculated and added in to the gun control to lay the gun at the required angle off the aiming mark. <IMAGE>
Patent GB-2017798-A (GB)
Title: Supporting furniture on an elevated floor
IPC: A47B91/08
Filed: 1979-02-14
Abstract: An elevated floor for computers, e.g., comprises a plurality of floor panels e.g. 20c supported by a support means above a base floor. The floor panels rest freely upon the support means in non- attached relationship therewith, and include as part thereof means e.g. a socket 58 for supporting a furniture item. An item of furniture may replace one or more of the floor panels and be supported by the floor panel support means. In Fig. 2, a device 32 attached to the panel 20a supports the hollow pedestal 30 of a desk 28. Weights 32a are attached to the panel to balance the desk, or the device 32 may be weighted. A table may be attached to the panel so as to be movable therewith, (Fig. 6, not shown). A desk may be attached in a similar way, with an adjustable bellows built in to a pedestal therefor, (Fig. 10, not shown). <IMAGE>
Patent GB-2029857-A (GB)
Title: Nickel-based high-temperature alloy containing platinum group metal
IPC: C03B40/00
Filed: 1979-02-28
Abstract: The invention relates to nickel- chromium based gamme prime alloys consisting in percentages by weight (apart from impurities) of aluminium (4 to 13.5%), chromium (trace to 6%), one or more metals of the platinum group (trace to 20% total) and balance nickel. Alloys according to the invention possess good corrosion resistance at elevated temperatures in excess of 900 DEG C. They may also contain up to 5% Hf, 6% Ti, 12% Ta, 6% Nb, 0.15% C, 0.1% B, 10% Co, 14% Mo, 14% W, 1.75% Zr, 0.25% Si and/or 3% of one or more of Sc, Y, R.E. metals. Those elements listed from Nb onward may be present wholly or partially as their oxides.
Patent GB-2016450-A (GB)
Title: Production of 2,2',4,4',6,6'- hexanitrostilbene
IPC: C07C205/06
Filed: 1979-03-19
Abstract: A process for the preparation of 2, 2',4,4',6,6'-hexanitrostilbene comprises the steps of:-   a. reacting an alkali or alkaline earth metal hypochlorite with 2,4,6-trinitrotoluene in an aqueous organic solvent; b. allowing said reactant mixture to stand for a period of at least 30 minutes; c. after said standing period, adding a solution of a mineral acid, with stirring, to said reactant mixture to acidify said mixture to a final pH of less than 5, so as to cause agglomeration of the hexanitrostilbene; d. allowing the mixture obtained in step c. to settle and separate into two layers; e. passing at least the lower of said two layers through a filter to filter off the suspended product.   Washing the product afforded hexanitrostilbene that has a surface area of between 3 and 6 metre<2>gm<-1> when measured by gas adsorption techniques.
Patent GB-2044935-A (GB)
Title: Abrasion testing
IPC: G01N27/04
Filed: 1979-03-21
Abstract: Abrasion testing, and hence particle content of fluids including liquids and gases is carried out by abrading a thin film 25 of an electrical conductor with the fluid, and measuring the resulting change in electrical resistance of the film. The method can be used to monitor metal particles in oil, and hence the state of wear of oil-lubricated metal parts, and the level of particulate pollution in the atmosphere.
Patent GB-2024023-A (GB)
Title: Constructional toys
IPC: A63H33/08
Filed: 1979-04-12
Abstract: A constructional toy for children intended to be used mainly outdoors for assembly of structures such as a house or fort is constituted by a number of panels each being rectangular with slots extending inwardly from one side by which two or more panels may be assembled in intersectional engagement by virtue of the coaction between two slots. Some panels may have apertures through which a child may crawl and rods or pegs may also be provided by which panels can be further interconnected.
Patent GB-2022405-A (GB)
Title: Collapsible arm-chair
IPC: A47C4/02
Filed: 1979-06-07
Abstract: A foldable arm-chair or lounger which can be readily adjusted from an upright to a reclining position. The arm-chair comprises a foldable tubular frame 1 supporting a detachable flexible seat 5. The backrest 7 of the seat is adjustably supported by a telescopically adjustable upright member 10 mounted on the tubular frame 1 to pivot from the front to the rear. The arm-chair has arm rests 33, 54 which are adjustable so that they are maintained at a predetermined distance from a seat-part 6 of the flexible seat 5 when the arm-chair is adjusted from an upright to a reclining position. <IMAGE>
Patent GB-2029092-A (GB)
Title: Piezo-electric oscillator assembly
IPC: H03H9/19
Filed: 1979-07-13
Abstract: An oscillator assembly comprising a piezo-electric oscillator member (10) having a tuning fork portion (10a) the base (10d) of which is integral with a frame portion (10e) which extends around the tuning fork portion (10a); two plates or box-shaped containers (8, 9) between which the oscillator member (10) is sandwiched; and an electrode (10g) (not visible) which has been provided on (the underside of) the oscillator member (10) and which is connected through a through-hole (13) in the said frame portion (10e) to an external electrode (16b). The other oscillator electrode (10f) directly contacts the other external electrode (16a) on the case (9). The through-hole (13) may be at the frame edge or spaced therefrom. The case may also have through-holes, when the electrodes are on outer surfaces. <IMAGE>
Patent GB-2039847-A (GB)
Title: Dispensing Device
IPC: G01F11/28
Filed: 1979-10-23
Abstract: A vending machine of the inverted container type includes means for indicating the presence of ingredients in the container in the form of a light source such as light emitting diode 22 and a sensor such as a phototransistor 23 which together define a light path 25 across the neck portion 34 to a suitable ingredient container 31. The ingredient container is secured to a dispensing nozzle assembly comprising a sleeve 44 carrying a dispensing nozzle 41 and an inner valve block 50 incorporating a valve member 60, when the ingredient level falls below the light path 25 the incident light falling upon sensor 23 is increased thereby providing an indication that the ingredients are "sold out". In a particular embodiment of the invention the light source is an infra red emitter which may be presented using a micro processor unit thereby inducing a level of the emitter. <IMAGE>
Patent GB-2042277-A (GB)
Title: Transformer for use in a static inverter
IPC: H05B41/282
Filed: 1979-12-05
Abstract: A transformer is described for use in a static inverter in association with one or two switching devices, typically transistors, as in a high frequency switching series ballast circuit for a gas discharge lamp 12. The transformer produces an output for control of the transistor 13 which changes in sense as a function of the flux level in the transformer core. The arrangement is applicable to figure "8" cores, such as are assembled from two "E" cores, and requires only a single aperture 28 located at the base of the central leg. Control is effected by a single primary 16 and single secondary winding 17 wound through the aperture. With two switching devices, two apertures are normally provided. In operation, transistor 13 is switched on at 22KHz by an oscillator 20 and current flows therethrough to the aperture primary winding 16, main winding 15 in series therewith, and lamp 12. The windings 16 and 15 produce fluxes  phi c and  phi m that reinforce over one area (31), Fig. 4A (not shown) adjacent the aperture 28, eventually producing saturation there. The main flux  phi m is thereupon diverted to pass round the aperture in the opposite sense, Fig. 4B (not shown), thereby reversing the current induced in the aperture secondary winding 17 and turning the transistor 13 off. Current to the lamp 12 is, however, maintained until the transistor 13 is again turned on, by current flow through a diode 19 and the main winding 15. Trigger pulses from the oscillator 20 are fed to a third winding 18 in the aperture 28. <IMAGE>
Patent GB-2045260-A (GB)
Title: >Bitumen Composition
IPC: C08L95/00
Filed: 1980-01-04
Abstract: The invention relates to a bitumen composition suitable for coating purposes, as well as to the process for producing sealing compounds containing said compositions. The bitumen composition according to the invention comprises bitumen and linseed oil varnish, paraffin, stearin, and optionally a stabilising agent against oxidisation, polyisobutylene, spindle oil and a silicone resin. The composition prepared according to the invention is applied onto a soft cellular polyurethane substrate with open pores in such a manner that 2.5-4 parts of the product having the composition previously described are applied to 1 part of the substrate at a temperature of 60-90 DEG C. The coated substrate is cooled by air or it is allowed to cool. The sealant thus obtained is particularly suitable for use in the building industry and civil engineering for sealing gaps and as a waterproof product.
Patent GB-2045252-A (GB)
Title: A plasmid and its microbiological preparation
IPC: C12P21/00
Filed: 1980-03-03
Abstract: The plasmid pUC2 can be obtained from the microorganism Streptomyces fradiae, NRRL 11444. The plasmid can be used as a cloning vehicle in recombinant DNA work. By way of example, the insulin gene can be inserted into the plasmid and then a suitable host containing the resulting plasmid can be used to produce insulin.
Patent GB-2073514-A (GB)
Title: Excess voltage ripple detecting apparatus
IPC: G01R19/22
Filed: 1980-04-02
Abstract: The presence of excessive ripple on a rectified a.c. supply 1, for example the traction power supply of an electrified railway in a fail-safe manner is detected by modulating 12 a carrier signal 9, having a frequency near to that of the supply, using for example square wave modulation, and superimposing it on the supply signal. The combination signal is subsequently detected, passed through a band-pass filter, 13 and demodulated 14 to provide the energising voltage of a relay 17. If there is no or relatively little ripple the output voltage from the filter and demodulator is nearly the full square wave and is sufficient to maintain relay energisation. When the ripple voltage exceeds a threshold the filter and demodulator output is significantly less than the full square wave and is insufficient to maintain energisation of the relay. <IMAGE>
Patent GB-2083536-A (GB)
Title: Cavity Wall Fasteners
IPC: G09F7/18
Filed: 1980-09-06
Abstract: A supporting device suitable for mounting on a cavity wall, for example a dry-lined interior wall, comprises a supporting element 6 and at least one retaining element 7 adapted to be insertable through an aperture in the wall into the cavity of the wall, the or each retaining element being connected to the supporting element by a flexible cord 8. As shown, there are three retaining elements, each in the form of a spiked ball. Each spiked ball is pushed through the aperture in the wall in turn; the supporting element, conveniently shaped in the form of a disc with serrations on one side, is then rotated to tighten the flexible cords, Figure 5, and bring the serrated side of the disc into gripping engagement with one surface of the wall, while the spiked balls are simultaneously brought into gripping engagement with the other surface of the wall inside the cavity. A fixing member 5 comprising a hollow cylindrical body adapted to be inserted through the aperture in the wall may also be employed. <IMAGE>
Patent GB-2062493-A (GB)
Title: Improvements in or relating to pipette means
IPC: B01L3/02
Filed: 1980-10-23
Abstract: A pipette, suitable for use in automatic chemical (more especially bio-chemical) analysis, e.g. for the sampling, diluting and dispensing of liquids, such as blood serum, comprises a circumferentially compressible tube (10) communicating through the lower of two connecting tubes (22) with a pipette tip, and, optionally through the upper with a source of diluent. The tube (10) is arranged to be compressed circumferentially and elastically, e.g. by fluid pressure applied through a connector (24) into a space (16) surrounding the tube (10) inside a block (12). Relief of the pressure allows tube (10) to expand and draw a sample into said pipette tip, the sample volume being dependent on the fluid pressure applied. Re-application of pressure expels the sample from the pipette tip. A suitable material for the tube (10) is latex rubber. It may be lined with silicone rubber to reduce moisture absorption. In an alternative embodiment, the tube (10) is compressed by tightening a surrounding helical filament. <IMAGE>
Patent GB-2064044-A (GB)
Title: Composite pipe coupling
IPC: F16L13/00
Filed: 1980-11-26
Abstract: A composite pipe coupling has a liner 132, which seals pipes (10, 12) to be coupled by the utilization of heat recoverable metallic-drivers (120 to 128), and a complementary external support-structure (113) that allows high tensile loading of the coupling. A pair of complementary heat recoverable metallic tensile rings (118, 130) may further supplement the tensile strength of the liner (132). <IMAGE>
Patent GB-2066634-A (GB)
Title: Apparatus for recovering grain
IPC: A01F12/44
Filed: 1980-12-19
Abstract: Apparatus for recovering grain from a mixture of grain and straw comprises a conveyor (2); a downwardly inclined chute (4) arranged so that said mixture discharged from the conveyor falls onto the chute (4), the chute (4) having a floor that is imperforate to the passage of grain; a trough (5) covered by a grille and adapted so that when the mixture of grain and straw passes down the chute (4), grain is collected by the trough (5) and straw passes over it; and a rotor (7) provided above and adjacent to the rear end of the chute (4) and driven so as to assist the discharge of material, the rotor (7) being adjustable towards and away from the chute (4) to vary the space therebetween for different types of crop and crop conditions. The rotor (7) may be carried between downwardly extending pivoted arms (10). <IMAGE>
Patent GB-2092009-A (GB)
Title: Face masks and kits therefor
IPC: A41D13/11
Filed: 1981-01-30
Abstract: A respirator includes a mask 10 of fibrous material and retaining straps 20 of flexible extensible material that may be inserted into aperture a 16 in a peripheral flange or lip of said mask and held in position by means of bars 22. The masks and straps may be packaged together as kits. <IMAGE>
Patent GB-2066204-A (GB)
Title: Improvement to forage feeders
Inventor: KIDD ARCHIBALD WATSON
IPC: A01F29/00
Filed: 1979-04-18
Abstract: A forage feeder 2 fitted with the usual up and over beater 6 has an auger 10 for conveying the material from the feeder 2 to the outlet. In order to prevent waste of material between the beater 6 and the auger 10 there is a concave shield 14 under the lower beater the upper edge 18 of which is scraped by the flights 22 of the auger 10. The lower edge 24 of the shield 14 bears on the floor 4 of the feeder 2 and in order to ensure that the edge 24 is always in contact with the floor 4 the end portion is provided with saw-cuts to provide individual plates 30, each spring-pressed into contact with the floor 4. <IMAGE>
Patent GB-2073264-A (GB)
Title: Orthocyclic coil winding machine
IPC: B65H54/28
Filed: 1981-04-02
Abstract: The machine comprises a bed (1), Fig. 1, on which is mounted a turntable (2) with several mandrels (3) installed radially thereon, each mandrel, Fig. 3, comprising a body (13) with a tapered supporting sleeve (14), a slotted head flange (15), a removable tail flange (16), a carrier (17) with radial slots (18) and sectors (19) received in the carrier slots and having inclined inner surfaces cooperating with the taper surface of the support sleeve so that the sectors are retracted radially inwardly when the flange (16) is removed. Teeth (20) on the sectors form, when the sectors are expanded through axial slots in a bobbin having flanges 25, 25_, orthocyclic grooves (21). Elastic rings (22) are fitted around the sectors (19). The machine also includes a mechanism for correcting the winding pitch during the winding of a coil, and a wire placer (7) which acts as a wire tensioner and is adapted to ensure the correct initial winding pitch. The bobbin may be omitted. <IMAGE>
Patent GB-2098149-A (GB)
Title: Vehicle immobilising device
IPC: B60R25/00
Filed: 1981-05-08
Abstract: A pedal blocking member is in the form of a U-shaped strip 10 having two arms 11 and 12, in which are respective holes 14 and 15, and a curved portion 13. To immobilise a vehicle the member is positioned around pedal stems 18, 19 and 20 with the arms 11 and 12 at each side of the stems and with the curved portion 13 abutting the pedal stem 20. A padlock 21 locks the device in place so inhibiting independent movement of the pedals. <IMAGE>
Patent GB-2075891-A (GB)
Title: Stop-off compound for vacuum welding processes
IPC: B23K20/20
Filed: 1981-05-14
Abstract: A stop-off material 18,20 prevents adhesion between metal surfaces 12,14 during high temperature processing, as in brazing and diffusion bonding, and is comprised of a fine ceramic particulate, a binder, a solvent, and a diluent. The binder is a polymer which degrades by chain depolymerization or unzipping at low temperatures in vacuum. Vaporization of the solvent and diluent leaves the binder to hold the ceramic particulate in place during assembly. Heating to low temperatures in vacuum degrades the binder to volatile constituents which are carried away without interaction with the metals, thus leaving the non-reactive ceramic particulate in place to prevent adhesion at high temperatures. A preferred stop-off is comprised of levigated alumina particulate, polystyrene binder, toluene solvent, and ethyl acetate diluent. <IMAGE>
Patent GB-2083775-A (GB)
Title: Trimming knife
IPC: B26B5/00
Filed: 1981-06-22
Abstract: A retractable blade trimming knife comprises an elongate handle and a rack 15 and meshing wheel 11 or 11A for retracting a blade into the handle or for extending a blade from the handle. <IMAGE>
Patent GB-2085438-A (GB)
Title: Chromanol derivatives
IPC: C07D311/68
Filed: 1981-08-18
Abstract: A compound of the formula (I):   <IMAGE> and pharmaceutically acceptable salts thereof wherein R1 is hydrogen or C1-6 alkyl or an acyl group of 1 to 8 carbon atoms; n is 2, 3 or 4; X is halogen; and the OR1 and HN(CH2)nX moieties are trans; has antihypertensive activity and a low level of cardiac side-effects.
Patent GB-2084596-A (GB)
Title: Low Viscosity Epoxide- polyurethane Blends
IPC: C03C25/326
Filed: 1981-09-18
Abstract: A cured low viscosity epoxide- polyurethane blend suitable for the impregnation of fibres, such as glass or carbon fibres, is prepared by a method which comprises   (i) curing the polyurethane content only of an uncured epoxide- polyurethane blend under conditions such that gelation of the polyurethane does not occur; and (ii) subsequently curing the epoxide content of the blend by means of a curing agent of low viscosity. The curing agent for step (i) may be an aromatic amine, and for step (ii) an anhydride. The invention also relates to an epoxide-polyurethane blend, wherein each of the epoxide and polyurethane content is cured, the blend having a viscosity of 4 poises or less at 90 DEG C. i
Patent GB-2113840-A (GB)
Title: Thermally responsive trigger device
Inventor: FORD JAMES
IPC: G21C9/027
Filed: 1982-01-28
Abstract: The device comprises a sodium- filled bellows (10). The bellows has freedom to expand with temperature rise to a threshold temperature at which point further expansion of the bellows operates a trigger (17) which is preferably re-cockable. The trigger may support one or more control rods (23) in a nuclear reactor. A compact form of the invention has a bellows expandable to move a closure (13) through an unrestrained portion of travel within a cup (16) which is surrounded by a partial cup-shape spring trigger (17) until the bottom of the cup is engaged and further movement depresses the spring trigger to reduce the rim diameter of its wall parts, and thus allow e.g. a control unit 23 to fall into a reactor core. The device can be set to operate at a given temperature by inserting a shallower or deeper cup (16). The device is resettable. <IMAGE>
Patent GB-2096650-A (GB)
Title: Hand-operated knitting apparatus
IPC: D04B7/08
Filed: 1982-04-13
Abstract: Mounted on a frame 10 are a pair of flat needle beds which are disposed in a V-configuration. Each needle bed includes a plurality of needles 17 which can be extended and retracted by manually grasping parts 23 thereof. When the needles of both beds are extended, a generally V-shaped recess is defined therebetween along which a yarn to be knitted is laid by hand. For single knitting, one of the flat needle beds can be omitted and an attachment can be secured to the frame 10 having a plurality of fingers which co-operate with the needles 17 in the remaining bed. The needle bed may alternatively have a curved shape. <IMAGE>
Patent GB-2114220-A (GB)
Title: Internal combustion engine with a compressor-turbine assembly
Inventor: HOFBAUER AUGUST
IPC: F02B39/02
Filed: 1982-06-30
Abstract: Valve 1 is disposed in a bypass line circumventing the turbine element of an i.c. engine exhaust driven turbo-charger thereby to influence air intake boost pressure. Valve 1 is of a pneumatic type having pressure chambers 18 and 17 separated by diaphragm 15. The pressure in chamber 17 is that prevailing upstream of the turbine and said pressure is communicated via through bore 25 in valve element 7.   <IMAGE>
Patent GB-2103730-A (GB)
Title: Improvements in hydraulic pressure converters
Inventor: HARRISON ANTHONY WILLIAM
IPC: F04B9/107
Filed: 1982-08-11
Abstract: An hydraulic pressure converter incorporates a differential intensifier piston (3) which is reciprocable in a bore (2) in a housing (1) to draw fluid into a pump chamber (9) and discharge fluid from the chamber (9), and reciprocation of the piston (3) is determined by a supply of hydraulic- operating fluid under pressure for generating a force to urge the piston (3) in a first direction. A control valve (16) responsive to the displacement of the piston (3) in that direction to reduce the magnitude of the force when the displacement attains a predetermined value is normally biassed towards a closed position by the pressure differential acting across the piston (3). The control valve (16) comprises a valve member (17) for engagement with a seating (19), a valve-operating member (24, 26) for operating the valve member (17), and a spring assembly acting between the valve member (17) and the valve- operating member (24, 26). The spring assembly may have at least two different rates and may comprise a compression spring (28) acting in series with a Belleville or like spring washer (31) which has a higher rate than the compression spring (28). <IMAGE>