baber/WOPTO huggingface dataset:
Patent GB-2077033-A (GB)
Title: Cathode unit for fluorescent tube
IPC: H01J61/04
Filed: 1980-11-06
Abstract: Cathode unit intended for use in a fluorescent tube and designed in such a way that the service life of the tube is increased markedly as a result of a reduction in the loss of emmission material from the cathod (3). These material losses are caused by, inter alia, ion bombardment and by vaporization of the emission material. In order to achieve a marked increase in the reflection of released ions and molecules back to cathod surface, both ions and molecules which have been released through ion bombardment a ions and molecules which have been released vaporized from the cathod surface, the cathode (3) is surrounded by an electrically conductive cathode shield (6) in the form of a box-shaped casing which is, however, electrically insulated from the cathod. A opening (8) is made in the bottom of the shield for inserting the cathod (3). The open end of the shield (6) is sealed by means of a disc (9), preferably made of mica and provided with a centrally located hole (19). The hole diameter of the mica disc (9) should be selected so that it is as small as possible while bearing in mind the fact that the starting voltage for the tube should not exceed a predetermined value. The opening (8) in the bottom of the shield (6) should be of at least the same area as the hole in the mica disc (9).
Patent GB-2080223-A (GB)
Title: Air cushion vehicle
IPC: B60V1/11
Filed: 1981-07-06
Abstract: Means for effecting rapid changes in the geometry of a flexible wall structure 18, 19 forming at least a part of the cushion sealing means on an air cushion vehicle are comprised by one or more inflatable members 31 co-operating with the flexible wall structure and means 36 for rapidly introducing pressurised air into the or each inflatable member. The or each inflatable member 31 may be constituted by a wall structure portion of hollow construction, and the means 36 for rapidly introducing pressurised air into the or each inflatable portion may comprise an air ejector. The invention finds particular application in assisting directional control of an air cushion vehicle, by enabling the centre of pressure of the air cushion to be movable relative to the centre of gravity of the vehicle. <IMAGE>
Patent GB-2102478-A (GB)
Title: A spring clip or securing a bullhead railway rail
Inventor: CONROY BRIAN GEORGE
IPC: E01B9/58
Filed: 1981-07-20
Abstract: A spring clip which is suitable for use in securing a bullhead railway rail in a bullhead rail chair comprises a bent piece of sheet metal having a central portion 10 which is to lie between a web of the rail and a facing surface of a wall upstanding from the base of the chair. At opposite ends of the central portion 10 there are locking portions 11 between which the wall lies, these locking portions resisting movement of the clip along the rail. Beyond the locking portions, there are end portions 12; the parts of which that are shown lowermost bear on the web of the rail. The clip is driven, one end foremost, in a direction substantially parallel to the length of the rail, into the space between said wall and the web of the rail, with the two end portions 12 in contact with the web and one locking portion 11 in contact with the surface of the wall, until that locking portion emerges from that space and snaps away from the web of the rail. <IMAGE>
Patent GB-2081175-A (GB)
Title: Production of Crimped High Tenacity Rayon Fibres
IPC: D01F2/06
Filed: 1981-07-21
Abstract: Rayon fibres having a wet modulus of at least 0.5 grams per denier are prepared by spinning a viscose solution having a salt index between 2.5 and 6 into a coagulating spin bath containing 0.8 to 3.9% sulphuric acid 1-6 wt% ZnSO4 and 10-20% Na2SO4, stretching the resulting incompletely regenerated filaments and completing the regeneration of the cellulosic filaments in an acid bath at above 80 DEG C. The viscose solution is prepared from an unbalanced ratio of sodium hydroxide to cellulose of from 0.60 to 0.87:1. The ratio of acid in the spin bath to sodium hydroxide in the viscose solution ranges from 0.20 to 0.66:1.
Patent GB-2084800-A (GB)
Title: Method of making marginless multi-layer ceramic capacitors
IPC: H01G4/30
Filed: 1981-07-28
Abstract: A method of making a multi- layer ceramic capacitor comprises the steps of providing or fabricating green ceramic sheets and imprinting or otherwise depositing on such sheets patterns (11, 12, 13) of electrode material, the patterns (11, 12, 13) each defining a continuous electrode area many times the anticipated area of the final capacitor. A multiplicity of layers of the ceramic and electrode are stacked and increments of the composite mass are cut therefrom in the direction perpendicular to the axis of elongation of the electrodes, which increments are thereafter fired, terminated and glazed or enveloped in an insulating coating. Preferably the capacitors are fabricated to value by severing an increment of predetermined width, finishing a capacitor therefrom and measuring its value, and thereafter sizing the subsequently severed increments as a function of the capacitance measurement derived. <IMAGE>
Patent GB-2083707-A (GB)
Title: Circuit interrupters
IPC: H01H33/68
Filed: 1981-09-02
Abstract: An electric circuit interrupter incorporates at least one pair of separable contacts (1) immersed in a liquid perfluoroalkane (5), such as perfluoropentane, sealed in an insulating container (2), said container being capable of expansion to accommodate a volume of vapour formed during circuit interruption. Said container is at least partially elastic or is only partially by said liquid, the remaining volume being occupied by either the vapour of the perfluoroalkane or by an inert gas (such as nitrogen or argon) and perfluoroalkane vapour. <IMAGE>
Patent GB-2105871-A (GB)
Title: Speed control device for a stepping motor
Inventor: GOMI YOSHIFUMI
IPC: H02P8/04
Filed: 1981-09-11
Abstract: A speed control device for a stepping motor comprises a timing detector (3,3') for producing timing pulses representative of the incremental advance of the stepping motor; a motor driving circuit (25), and a speed control circuit periodically actuating said motor driving circuit at least in part in response to said timing pulses during acceleration of the stepping motor. The speed control circuit includes a memory (43) for storing the time interval between respective actuations of the motor driving circuit during acceleration and actuates the motor driving circuit during deceleration of said stepping motor at intervals which are a function of the stored acceleration intervals, applied in reverse order. <IMAGE>
Patent GB-2088320-A (GB)
Title: Elongate, abrasion-resistant, shaped members of reinforced plastics material, and processes for the production of same
IPC: B29C53/78
Filed: 1981-11-18
Abstract: A hollow elongate body (1) of abrasion-resistant material is wound on a rotating drum (3). The body (1) is of U-shaped cross-section to define a groove (10) which, as the body (1) is wound round the drum (3), is filled with high-strength filaments (11) which have been previously impregnated with a cross-linkable plastics material capable of adhering to the interior of the groove (10). The body (1) passes through an oven (14) to cause cross-linking of the plastics material. Before entering the oven (14), a cover (15a) may be applied to the body (1). To make the product more flexible, adhesion between the plastics material and the surface of the groove (10) can be prevented, e.g. by coating the interior of the groove (10) with an anti-adhesion substance. <IMAGE>
Patent GB-2110339-A (GB)
Title: Changeover valve
Inventor: BROWN DUDLEY WILLIAM
IPC: B63H21/38
Filed: 1981-11-18
Abstract: In order to allow a water cooled marine engine (2) to run without risk of overheating when the craft is out of the water, an on board cooling water supply is connected via a pipe 7 with a first inlet port (4) of a change over valve (3). A second inlet port (5) provides for sea-water (normal) supply of cooling water and an outlet (6) directs the water to the engine. When the craft is launched, water is supplied via the second port (5) to the outlet 6, and when the craft is not launched, water supplied via the port 4 urges a piston closure member to a position in which the ports 4 and 6 communicate and the port 5 is isolated. <IMAGE>
Patent GB-2093376-A (GB)
Title: Surface treatment of granulated or compressed products
IPC: A23G3/26
Filed: 1981-12-15
Abstract: Liquid treating agent admitted at 24 is applied to granular material within drum 10. The drum contains a helical mixing and conveying device (not shown) which is rotatable by a reversible motor 14. In use the drum is swung about axis 12 and the direction of rotation of motor 14 and hence the device is reversed each time drum axis 13 passes through the horizontal, so that the material is always conveyed towards the higher end of the drum. The drum is evacuated through fitting 16, the material enters at 22 and the treated product is removed at 26. Products treated are exemplified as acetyl salicylic acid treated by hydroxypropylmethyl cellulose and talc in methylene chloride, sugar pellets treated with zein and talc in alcohol and tablets treated with hydroxypropylmethyl cellulose and talc in methylene chloride and acetone. <IMAGE>
Patent GB-2095630-A (GB)
Title: Vehicle underride protective device
IPC: B60R19/30
Filed: 1982-03-31
Abstract: The device 4 comprises an elongate member 7 pivotally connected to and depending from mounting means 8, such as an inverted channel-section box member 12 for attaching the elongate member 7 to a vehicle. Energy absorbing means, such as a block 19 of solid butyl rubber, is arranged between the elongate member 17 and an abutment member 14 so as to absorb energy of an impact to the elongate member. Movement of the elongate member 7 is limited by the abutment member 14. <IMAGE>
Patent GB-2106421-A (GB)
Title: Spray tip for aerosol can
Inventor: SMRT THOMAS JOHN
IPC: B05B9/04
Filed: 1982-04-13
Abstract: A spray tip (26) for an aerosol can (25) has two pairs of flexible and resilient wings (38-41) which extend outwardly from opposite sides of a spraying orifice (47) in the tip. The tip may thus have an H-configuration, with the wings extending parallel to the long dimensions of a rectangular spray orifice (47). The wings cooperate with inclined surfaces in the bottom wall (27) of a can holder 24 in a spraying apparatus to orient the spray tip so that the spraying orifice is properly aligned with respect to the direction in which the spraying apparatus is moved. The wings can also cooperate with a sliding actuating bar which will engage the wings and align the spray tip. <IMAGE>
Patent GB-2113110-A (GB)
Title: Liquid filter
Inventor: MORGAN HOWARD V
IPC: B01D29/23
Filed: 1982-05-07
Abstract: A filter basket comprising a porous wall 70 and an upper peripheral ring 68 locates in a housing closed by a lid and having, just below the upper edge 20 of the housing, an internal shoulder on which the flange 86 of basket ring 68 rests. The housing wall and the ring 68 each carry either a series of pins 82 or a corresponding series of slots 72, and the pins 82 are received into slots 72 and then ride up cam surfaces 74 when the basket is inserted axially and then rotated slightly in the housing, to urge flange 86 down on to the shoulder, compressing seal ring 76 to establish a seal between the basket ring and the housing. <IMAGE>
Patent GB-2099589-A (GB)
Title: A meter for monitoring the heating value of fuel gases
IPC: G01N33/00
Filed: 1982-05-20
Abstract: The fuel gas is sampled, the sample mixed with an excess of oxygen and completely burnt, and either the oxygen consumed or the excess oxygen remaining after combustion is measured. As shown, the sample is mixed with air at 20 and fed to heated chamber where the oxidation is catalysed by catalytic measuring electrode 34 of solid electrolyte sensor 32, the sensor output being a measure of oxygen consumed. In an alternative embodiment the oxygen for combustion is supplied by a solid electrolyte oxygen pump. <IMAGE>
Patent GB-821621-A (GB)
Abstract: 821,621. Assemblies of electrical components. SKILLMAN & CO. PTY. Ltd., T. S. Dec. 28, 1955 [Dec. 29, 1954], No. 37147/55. Class 37. A unit in an electrical assembly, e.g. a carrier telephone system, comprises a U-shaped sheetmetal member 1, an apertured front panel 2, a bracket 12 attached at one end by screws 15 to the member 1 and at the other end by screws 14 to the front panel 2 and a partition wall 8 arranged between the upright portion of the bracket 12 and the rear wall of the U-shaped member 1. Thermoplastic strips 16 and 17 are attached as shown to the bracket 12 and components are mounted between them by pressing their leads into the thermoplastic material with the application of heat. Components which need to be readily accessible such as valves 5 and potentiometer shaft 6 are mounted upon the vertical wall of the bracket 12 so as to be accessible through the aperture in the panel 2. In the arrangement shown the unit comprises two largely similar amplifiers which are separated by the partition 8 which is made of a material providing magnetic and/or electric shielding. The unit may be secured in a suitable rack by means of screws 3, the plug unit 24 engaging with a complementary socket on the rack.
Patent GB-2101558-A (GB)
Title: Mobile lifting device
Inventor: GAIR ALAN
IPC: B66F15/00
Filed: 1982-06-17
Abstract: A mobile lifting device for use in lifting and transporting heavy objects manually, comprises a frame made up of an operating arm (1) and a load- carrying arm carried on wheels which provide both mobility and the centre about which the frame moves as a lever for the manual movement of a load, the whole being preferably fitted with an additional wheel (9) carried on a movable member (10) attached to the frame so that it is movable by the operator between a retracted position in which it does not interfere with the lifting operation and an extended position which provides a stable configuration for maintaining the load clear of the ground and allowing the device with its load to be moved about. A spring (16) or its equivalent, and a latch (17), to lock the additional wheel in the load-carrying position may be provided. <IMAGE>
Patent GB-2125572-A (GB)
Title: Optical fibre sensors
Inventor: EPWORTH RICHARD EDWARD
IPC: G01L11/02
Filed: 1982-08-03
Abstract: A perturbation (P), such as pressure or vibration, is employed to periodically deform an optical fibre (1) supporting two modes, or two polarisations of one mode, of optical power launched into the fibre by, for example, urging it against an undulating support (2). The period of the undulations is chosen to match the beat length between the two modes, or polarisations, at a predetermined optical frequency. When the fibre (1) is thus deformed coupling between the modes, or polarisations, is achieved; the extent of coupling being a measure of the perturbation causing the deformation. A distributed sensor comprising a number of such sensors is also described; the optical fibre comprising both the sensing elements and the means interconnecting them. Since the beat length varies with optical frequency, the different sensing elements of such a distributed sensor may be resolved by using correspondingly different optical frequencies. <IMAGE>
Patent GB-2128657-A (GB)
Title: Drilling methods and equipment
Inventor: WILLIAMS DAVID RONALD
IPC: E21B10/32
Filed: 1982-10-22
Abstract: A cutting adaptor (4) mounted adjacent to a cutting bit (1), of a drill string excavating rock or mineral to form a borehole, is provided with radially outwardly extendable cutting elements (20) arrangeable to enlarge the diameter of the borehole (10, 11). In a second operational mode the cutting elements can be withdrawn. The cutters (20) are extended and retracted by movement of a stepped plunger (30). <IMAGE>
Patent GB-2113526-A (GB)
Title: Milled rice
Inventor: MEINARDUS ELMOND FRANK
IPC: B02B3/00
Filed: 1982-01-21
Abstract: Milled rice (80) which is free of bran and contains part of the germ in tip (81) is preferably produced in the apparatus of speci no. 2092429 by rubbing of the grains against each other. Conventional milled rice (e.g. by abrasion) have the tips (81) broken off (of Fig. 6). <IMAGE>
Patent GB-2113701-A (GB)
Title: Ink for planographic printing without the use of fountain solution and method of using the same
Inventor: SPENCER ALEXANDER
IPC: B41M1/08
Filed: 1982-12-03
Abstract: Lithographic printing may be carried out without the use of fountain solution if the plate used has a non- absorbent hydrophilic surface and the ink is supplied to the plate in the form of a dispersion of a solution in a polyhydric alcohol of one or more inert deliquescent inorganic materials (e.g. a chloride of Li, Ca, Mg or Zn) in a continuous phase of lithographic printing ink comprising a chlorinated or cyclized rubber or a rosin-modified phenolic resin, a solvent or vehicle for the resin, and a pigment. After imaging, the plate is primed, and may then be used for printing without fountain solution.
Patent GB-2113594-A (GB)
Title: A razor blade assembly
Inventor: DUNCAN DAVID STEPHEN
IPC: B26B21/22
Filed: 1983-01-05
Abstract: A razor blade assembly, in the form of a complete razor or a shaving unit for mounting on a razor handle, has a blade platform (13) supporting a blade (15), preferably a twin blade (16), and is mounted in a razor head frame (12) for rolling movement between a shaving position in which the blade or each blade is correctly positioned, relative to a guard bar (18) and a top cap 28, for shaving, to a retracted position in which the blade or each blade is withdrawn from the shaving position. <IMAGE>
Patent GB-2135529-A (GB)
Title: Cable clamp for flat cables
Inventor: FOX STUART DOUGLAS
IPC: H01R12/70
Filed: 1983-02-16
Abstract: A cable clamp for a flat cable has a moulded base (fig. 1, not shown) and a moulded cover as shown, each of which is of the form of a shallow tray. The walls of the tray have projections (7, 8) and recesses so located that the base and the cover can be fitted together in snap-action manner. Three of the walls when fitted together have a shallow aperture via which a flat cable can pass so that the clamp can be fitted over a T-ed joint between two flat cables. One edge of each wall is curved with a large recess so that the cables are each gripped as they pass through an aperture but are not pinched. A crossed-cable clamp with four apertures is also disclosed. <IMAGE>
Patent GB-2123231-A (GB)
Title: Gain control of audio-amplifying systems
Inventor: ANTONIAZZI PAOLA
IPC: H03G3/30
Filed: 1983-06-07
Abstract: The gain of a conventional power amplifier AP is reduced, by means of a feedback circuit RT, as soon as the amplified signal overcomes a prefixed threshold value, determined by a peak detector C, near the saturation level of the same amplifier AP. An audio amplifier projected for a given maximum power can thus be used as if it was able to supply a higher power. When, at a signal peak, the threshold value (preferably fixed from 3 to 6dB below the saturation level of the amplifier) is exceeded the output of the comparator C acts on attenuator AT with a time constant determined by T so as to reduce the gain of the amplifier AP. The time constant circuit T enables the output signal of the comparator to charge a capacitor (C1, Figure 2) very quickly (nano <0> sec) and as the output of the comparator C falls to zero the capacitor (C1) discharges slowly (e.g. 200 m sec) through resistor (R1). The variable attenuator AT may be of CMOS type. <IMAGE>
Patent GB-2125409-A (GB)
Title: Genetic engineering
Inventor: BROWNLEE GEORGE GOW
IPC: C12N9/64
Filed: 1983-08-03
Abstract: It has been a problem to find an alternative, less time-consuming, and more reliable source of factor IX, a polypeptide which is essential to the human blood-clotting process and necessary for the treatment of patients with Christmas disease. In order to aid in the solution of the problem, there is provided recombinant DNA containing a DNA sequence occurring in the human factor IX genome, and includes recombinant DNA comprising substantially the whole sequence of human factor IX genome, which is inserted in a cloning vehicle and transformed into a host, such as Escherichia coli. Other fragments of the sequence have also been cloned and the invention includes DNA molecules comprising part or all of the human factor IX DNA. There is also described cDNA derived from human factor IX RNA. Uses include the provision of an intermediate of value in the genetic engineering of a factor IX polypeptide precursor and thence manufacture of the factor IX polypeptide, and in making probes for use in diagnosing the presence of normal or abnormal factor IX DNA in patients with Christmas disease.
Patent GB-2134259-A (GB)
Title: Seismic data processing
Inventor: ALAM MUHAMMED SHAFIQUL
IPC: G01V1/28
Filed: 1984-01-23
Abstract: Conventionally processed seismic data help discover the large hydrocarbon traps but they are not always sufficiently useful to delineate minor but subtle and important geologic features and also details of discovered fields. The invention discloses, as a solution, a pre-stack process applied to the CDP gather records of a seismic line after NMO and static corrections. Within specified time gates including the reflections and/or within any zone of interest the undesirable trace-segments are zeroed and others multiplied to make up, if necessary, for the zeroing of the trace-segments and to retain full fold multiplicity. Each gate is slightly wider than the main lobe of the reflection refined. Its width is varied, if necessary along the line. The width and time of each gate are submitted at a few points of the line. At other points they are interpolated.
Patent GB-2137279-A (GB)
Title: Valve for an internal combustion engine
Inventor: LAING OLIVER
IPC: F01L3/02
Filed: 1984-01-25
Abstract: A valve for an internal combustion engine having a mechanically highly stressed valve stem of metallic material and a non metallic valve head which is positively connected thereto and which consists of e.g. silicon carbide or silicon nitride. The stem may comprise tube 2 and rod 5, clearance gaps 6, 7 being established so that the valve may self centre. <IMAGE>
Patent GB-2134616-A (GB)
Title: A fastener such as a reinforcing grommet
Inventor: RUTGERSSON GORAN
IPC: A44B13/00
Filed: 1984-02-03
Abstract: A fastener, such as a fastener for laminated materials, or a reinforcing grommet for cloth materials, comprises a tubular portion (10) which is intended to extend through a hole made in the material (22) and flange portions (12, 24) on either side of the material. The material is positioned intermediate the flange portions, an annular area being arranged to press against the surface of the material to form a frictional bond. This surface is formed on a part (1) which is provided with pin-shaped prongs arranged to be pressed through the material (22) by the force exerted by the flange portions, whereby a positive bond will also be obtained. An anchoring ring (4) is arranged to be positioned on the opposite side of the material (22) in relation to the part (1) provided with the prongs. This ring is made from a material having a hardness and a thickness as compared with the material of the prongs and the length of the latter that as a result of the pressure exerted by the flange portions (12, 24) they may be made to pierce the material of the anchoring ring. Consequently, the anchoring force holding the outermost portions of said prongs is obtained from the material of the anchoring ring (4), which material, when pierced through, is pressed against the surface of the prongs. <IMAGE>