baber/WOPTO huggingface dataset:
Patent GB-2162653-A (GB)
Title: Optical switching arrangement
Inventor: WOOD ROGER MICHAEL
IPC: H01S3/00
Filed: 1985-07-31
Abstract: An optical switching arrangement for controlling the transmission of an incident light beam in dependence on its intensity consists of a slab (1) of a photo-emissive material positioned in the light path of the beam such that an increase in the intensity of the beam above a predetermined threshold will cause a photo-electron to be emitted by the slab (1). A plasma in the neighbourhood of the slab (1) is thereby initiated, the plasma being effective to restrict further transmission of the beam through the slab (1). The photo-emissive material may be a solid e.g. germanium or sodium chloride, a coating on a solid, a fluid, gas or colloidal liquid, or a sharp edge of a material having a low work function. The plasma may be produced from ions of the photo-emissive material or from ions of a fluid surrounding the photo-emissive material. <IMAGE>
Patent GB-2164464-A (GB)
Title: Phosphor screens
Inventor: KATO HIROSHI
IPC: G03F1/92
Filed: 1985-09-03
Abstract: A method of making a phosphor screen 1 includes the steps of coating a photo-sensitive phosphor paste 5 on the screen 1, exposing the coated phosphor paste 5 through a photo-mask 8, and developing the exposed phosphor paste 5 thereby to form a phosphor stripe. The phosphor paste 5 comprises polyvinyl alcohol, ammonium dichromate and at least one glycol selected from glycol groups of 1,2-propanediol; 1,3- propanediol; 1,3-butanediol; and 2- methyl-2,4-pentanediol in a weight ratio of 0.1 to 2.0 relative to the solid component of polyvinyl alcohol in phosphor paste 5. <IMAGE>
Patent GB-2188261-A (GB)
Title: Manufacture of a bead chain
Inventor: WONG MIN-LU
IPC: B21L11/12
Filed: 1986-03-26
Abstract: In the method (a) at each of equidistant consecutive first segments of a first tube 301 two adjoined flanges 302 connected by a weakened joint are formed by dies 33; (b) the tube 301 is inserted into a second hollow tube 304 of larger diameter; (c) and the tube 304 is pressed by dies 36 to form a series of consecutive second segments constituted of alternate enlarged portions 366 and narrow portions 367, with each narrow portion 367 located between the flanges 302 of a first segment; and (d) each pair of said adjoined flange portions 302 is separated by tapping by a rod 37 along the weakened joint. The tube 301 is bent in a hollow tube- forming member 32, and the second tube is bent in a hollow tube-forming member 35. The resultant chain has beads connected by hollow members. <IMAGE>
Patent GB-2175605-A (GB)
Title: Aluminium alloy sheet having good platability
Inventor: USUI EIKI
IPC: C22C21/06
Filed: 1986-06-06
Abstract: The alloy consists essentially of 2 to 6 wt% of Mg, 0.1 to 0.5 wt% of Zn, 0.1 to 0.30 wt% of Fe and the balance of Al, and it may be used as the substrate for magnetic or optical discs. Also disclosed are compositions as above, wherein Zn is replaced by 0.03 to 0.4 wt% of Cu and wherein both Zn and Cu are included and the Fe range is extended to 0.01 to 0.3 wt%.
Patent GB-2187537-A (GB)
Title: Process of manufacturing seal members having a low friction coefficient
Inventor: KNAPP ALFONS
IPC: C04B41/87
Filed: 1986-02-07
Abstract: A process for manufacturing a pair of seal members (10 and 12) such as a pair of disks which control the fluid flow of a faucet. The two seals are formed of a moderately hard material (14), such as stellite, ceramic materials, metal materials or synthetic materials, which can be precisely ground to a particular finish. At least one of the seal members (10) is coated with a thin layer (16) of very hard material such as silicon carbides, metal carbides, metal nitrides, or cubic crystallographic lattice carbons. The coating layer is applied through either physical or chemical vapor deposition. This process provides seal disks with low friction coefficients thereby eliminating the need to provide a lubricant between the cooperating surfaces of the disks. In addition, adhesion between the seals is eliminated despite the smooth surface finish of the disks. Thus, the disks formed through the process improve operation of the faucet or valve utilizing cooperating seal disks.
Patent GB-2178785-A (GB)
Title: Well drilling fluids, fluid loss additives therefor and preparation of such additives
Inventor: WILLIAMSON ROBERT
IPC: C09K8/20
Filed: 1986-08-04
Abstract: A fluid loss additive for well drilling fluids consists of air blown tall oil pitch, preferably having a softening point (ring and ball) of 100 DEG  to 165 DEG C.
Patent GB-2198905-A (GB)
Title: Radar jammer apparatus
Inventor: MCEWEN COLIN DOUGAL
IPC: G01S7/38
Filed: 1986-09-09
Abstract: A radar jammer apparatus comprises a CW oscillator 11 the output of which is coupled to a biphase modulator 12 fed with pseudorandom digital noise 13. This provides an output signal whose bandwidth may be controlled by control of the noise characteristics to provide spot or barrage jamming. Thus, jamming may be effected against radars whose characteristics may or may not be known. <IMAGE>
Patent GB-2187382-A (GB)
Title: Extendible garment hanger
Inventor: KODET JOHN
IPC: A47G25/44
Filed: 1985-05-10
Abstract: A garment hanger comprising laterally extending arms (3) which are adjustable through a range of positions to vary the length thereof and adapt to the size of the garment displayed thereon. The adjustable arms comprising laterally extending ribs (3A) and a slide member (5) which is movable to extend or reduce the effective length of the arms.
Patent GB-2195057-A (GB)
Title: Door latch or lock with electromagnetic interference shield
Inventor: HENDERSON WILLIAM IAIN MACKIE
IPC: H05K9/00
Filed: 1987-08-28
Abstract: A door latch or lock designed to exclude electromagnetic interference (e.m.i.) has cooperating sliding annular surfaces (3A, 7A) on the door handle (3) and on a bearing block (7) in which the door spindle rotates. These surfaces are electrically conductive and are urged together under spring (15) action to provide an effective shield against e.m.i. The door spindle (6) is of insulating material which prevents electromagnetic interference being transmitted along it from the outside to the inside of the door. <IMAGE>
Patent GB-2195626-A (GB)
Title: Cementitious compositions and products
Inventor: RIRSCH DR ERIC
IPC: C04B28/02
Filed: 1987-10-01
Abstract: An uncured cementitious dough or paste, which is substantially free of particulate components having a diameter greater than 100 microns, said paste comprising in admixture;     a) At least one hydraulic cement; b) at least one polymer latex, the polymer being present in an amount of 1 to 20 parts by weight per 100 parts of the cement; c) total water in an amount from 8 to 20 parts by weight of water per 100 parts by weight of cement. A cured cementitious composition may be produced by heating said dough or paste at a temperature of above 100 DEG C and may be used for products such as roofing elements, for cladding the exterior walls of buildings and other building products.
Patent GB-2201414-A (GB)
Title: 1, 4-Benzodioxane-2,3-dimethanols
Inventor: CRAME ANDREW JAMES
IPC: C07D491/04
Filed: 1985-04-24
Abstract: Compound of formula (III> <IMAGE> (R<1>and R<2> are independently halogen, alkyl, alkoxy, hydroxyl, cyano, niro or -NR<3>R<4> where R<3> and R<4> are independently H or alkyl and R<2>,may be H) are described. Compounds of formula (III) are intermediates in the preparation of therapeutically useful benzodioxinopyrrole derivatives.
Patent GB-2217813-A (GB)
Title: A valve
Inventor: MCCALLUM ROSS
IPC: B60H1/24
Filed: 1988-03-14
Abstract: A valve for rear air extraction vents for motor vehicle body shells, which may be assembled without the aid of additional fasteners is provided having a body (3) with a first wall defining a first aperture (4) therein, a second aperture (7) in the body and a valve member (5) selectively to open and close said first aperture. The valve member (5) has a flap portion (9) to lay across and close the first aperture (4) and a plug (6) to seat in the second aperture (7) to attach the valve member (5) to the body (3). The plug (6) is connected to the flap (9) by a hinge (8) in order to allow the flap to open and close the first aperture (4). <IMAGE>
Patent GB-2204338-A (GB)
Title: Mobile grandstand with one half able to be pivoted onto the other
Inventor: MOLLISON MICHAEL HAROLD
IPC: E04H3/12
Filed: 1988-03-25
Abstract: The invention provides a mobile grandstand having a bank of seats 6 on a fixed sloping floor 5. A platform 10 extends downwardly, as a continuation of the floor 5, to the ground. For transport, the platform 10 can be folded back to lie above the floor 5 with the rows of seats 6a that are carried by the platform lying between the rows of seats 6 that are carried by the floor 5. The platform 10 is in two parts that are connected together lengthwise by a hinge 9 Fig 2. The means for folding the platform back acts on the upper part. As that is raised, the lower part first hangs down from the upper part and then rests on the underside of the upper part when the platform 10 is in its completely folded condition. <IMAGE>
Patent GB-2223132-A (GB)
Title: Improved rewirable plug
Inventor: HAYES DEREK
IPC: H01R4/24
Filed: 1988-06-08
Abstract: A rewirable plug a plug base (1) and a removable lid, has unsheathed but unstripped wires of an electrical cord (16) trapped in respective piercing terminals (3N, 3E, 3L) where electrical contact between the conductor strands of the wire core and plug pin (not shown) is achieved. Each terminal includes a colour-coded wire-receiving cradle (4) captive in a recess (5) but movable therein relative to a wire-insulation piercing blade (6a) and at least one insulation displacement slotted plate (6c) which acts to clamp the wire strands to the blade. The lid slides on the base (1) via dovetails (8) and is kept closed by a locking pin (9) which is non-releasable when the plug is in use. The pin (9) is spring-urged to a lid- retaining position after sliding via a lid cam (9a), and is released by a manually gripped post (not shown) or pin end (12). A cooperating socket masks the pin end to prevent access and/or movement needs for lid release. A grip based on opposed turnable toothed cams 13, 14 is provided for the cord 16, and the cams are turnable to accommodate differently-sized cables. <IMAGE>
Patent GB-2213326-A (GB)
Title: Adjustable brush pressure in an electric motor
Inventor: BAINES ROGER FREDERICK
IPC: H02K13/10
Filed: 1988-12-01
Abstract: In a fractional horsepower PMDC motor a brush 40, (137) is supported in contact with a commutator on a brushleaf 39, (138) mounted on a frame 33, (113). A spring 44, (138) bears against the brushleaf 39, (138) to urge the brush 40, (137) against the commutator 27, (111). The spring pressure is adjustable to allow a user to maintain a uniform and optimum brush pressure as the brush wears. Adjustment is by means of the pegs 46 or by an adjusting screw (149, Fig 6). The frame 33, (113) is movable circumferentially of the commutator to adjust motor timing. <IMAGE>
Patent GB-2225644-A (GB)
Title: Process for producing a light-shielding thin film pattern
Inventor: MOTAI NOBORU
IPC: H01L29/786
Filed: 1989-01-09
Abstract: A process for producing a pattern (12b) by imagewise exposing a positive photo-resist (13) on a light-shielding thin film (12) e.g. Cr, and a light-transmitting substrate (11); developing to form a photo-resist pattern (13a) on the light-shielding thin film (12); etching the light-shielding thin film (12) by using the photo-resist pattern (13a) as a mask, thereby forming a light-shielding thin film pattern (12a); exposing the photo-resist pattern (13a) through the light-transmitting substrate (11) by using the light-shielding thin film pattern (12a) as a mask; developing the exposed edge areas of the photo-resist pattern (13a) so as to form a reduced size photo-resist pattern (13b); and etching e.g. plasma dry etching the light-shielding thin film pattern (12a) by using the reduced size photo-resist pattern (13b) as a mask. The pattern may be used as a gate electrode. The process may be repeated by applying a Si thin film and positive resist to the gate electrode to form source and drain electrodes (Fig 2 not shown) or to form a photo-sensor (Fig 3, not shown). <IMAGE>
Patent GB-2217394-A (GB)
Title: Improvements in fire extinguishing apparatus
Inventor: LEE G D
IPC: B05B15/30
Filed: 1989-02-17
Abstract: A dip tube for the bottle of fire extinguishing apparatus, comprising a tube 10 of woven glass fibre, whereby in use normal flow of the fire extinguishing material is maintained regardless of the orientation of the bottle. A brass pick-up tube 14 at one end serves as a weight. A shape-maintaining tensionless coil 18 may be located within the tube 10, and the outside of the tube may be covered by a thin-walled impervious sleeve, e.g. of PTFE. <IMAGE>
Patent GB-2217778-A (GB)
Title: A window stay
Inventor: DAVIS RONALD PERCIVAL
IPC: E05D15/46
Filed: 1989-04-13
Abstract: A window stay for use in mounting a window sash to a window frame comprises a lower arm 2 and an upper arm 1 pivotally connecting a frame mounting member 3 to a sash mounting member 5. The upper arm 1 has a sliding pivot connection 6 to the sash mounting member 5. A control arm 7 extends between the lower arm 2 and the upper arm 1. The upper end of the sash mounting member 5 has a cut-out 9 adapted to engage a pillar 8 on the frame mounting member for a 'full-in' effect on closing. An arm 23 carries a protrusion 24 engaging in a slot 25 to limit the opening angle of the stay. The pivots 4, 4a are friction pivots. Such pivots may include a rotatable button 16 with non-uniform wall thickness between a shoulder 13 and bushing 15 so that rotation of the button adjusts the relative positions of the arms 11, 12. <IMAGE>
Patent GB-2220758-A (GB)
Title: Vehicle on-board weighing means
Inventor: WOOD JOHN
IPC: G01G19/08
Filed: 1989-06-26
Abstract: In an onboard vehicle weighing system comprising one or a number of strategically located load sensitive means e.g. transducer 1 mounted on chassis 6, in association with a load bearing area or container, each load sensitive means has mounted thereon a bearing block 8 provided with a cylindrically bored rotatable ball 10 through which load may be applied from the load bearing area or container to the load sensitive means in the optimum direction (normal to transducer 1) irrespective of the disposition of the load bearing area or container. Each transducer 1 is secured to a mounting plate 3 with an interposed resilient layer 4 and the plate is welded to a locating plate 5 secured to chassis 6. An axle of a platform or container on the chassis can extend through bores 11 in rotatable balls 10 of load sensitive means mounted at either side of the chassis. At the front end of a tipper vehicle a load sensitive device may be mounted on the chassis and an axle on which the operating ram is located extends through the bearing block 8. Weighing in the tipper vehicle only commences when the container is raised from its normal position hard down on the chassis. A processor receives signals from the transducers during tipping enabling weighed partial loads to be delivered. <IMAGE>
Patent GB-2221320-A (GB)
Title: Single-lens reflex camera with strobe
Inventor: SATOH MASAO
IPC: G03B15/03
Filed: 1989-07-26
Abstract: A single-lens reflex camera having a strobe light emitter incorporated therein, located above a pentagonal prism on a camera body, wherein the camera body is provided on its upper portion with mounting seats 21, 22 for the strobe light emitter. The strobe light emitter is provided with securing legs 30 which can be secured to the corresponding mounting seats of the camera body. <IMAGE>
Patent GB-2224953-A (GB)
Title: Constructional toy
Inventor: MOTT JONATHAN CHRISTOPHER
IPC: A63H33/10
Filed: 1989-09-11
Abstract: A constructional toy comprises a plurality of main building elements in the form of triangular-, square- and hexagonal-section building blocks, each having flat side surfaces containing a dovetail-shaped groove 20. The blocks can be joined together to form a variety of interesting shapes by means of elongate double dovetail-shaped connecting members 30. Each longitudinal half of each connecting member is shaped to be a tight sliding fit in the grooves of the blocks, to permit the blocks to be joined together face-to-face. <IMAGE>
Patent GB-2227808-A (GB)
Title: An apparatus for damping vibrations
Inventor: FRIEDMANN OSWALD
IPC: F16D3/10
Filed: 1990-01-22
Abstract: In an apparatus for damping vibrations a divided flywheel has two flywheel masses 1503 and 1504 interconnected by a damper which includes two sets of springs 1513 and 1513a which engage abutments on the flywheel mass 1503, are arranged side-by-side and abut projections on flange plates 1541, 1541a rivetted to the flywheel mass. The springs 1513, 1513a are housed in an annular chamber containing a viscous medium. <IMAGE>
Patent GB-2228943-A (GB)
Title: Cyanoacrylate compositions for bonding porous or non-active substrates
Inventor: HARRIS STEPHEN J
IPC: C09J4/00
Filed: 1990-02-19
Abstract: One-part cyanoacrylate adhesive compositions suitable for bonding porous or non-active surfaces containing a phase transfer catalyst of the formula  C<+> A<-> wherein C<+> is a cation other than sulfonium, e.g. ammonium, a quaternary chlorometallate, pyryllium, thiopyryllium, iodonium, phosphonium, metallocenium, or diazonium; and A<-> is an anion of relatively low nucleophilicity which does not initiate polymerisation of the cyanoacrylate monomer, e.g.  BF<->4, PF<->6, SbF<->6, SbCl<->4, AsF<->6, SbCl<->6,  SnCl<->6, FeCl<->4; or CF<->3SO3. It is believed that upon contact with a surface such as paper or wood the anion A<-> is exchanged for a more nucleophilic anion present on the surface to be bonded. As this other anion is transferred into the composition it initiates anionic polymerisation of the monomer which leads to bonding.
Patent GB-2242082-A (GB)
Title: "An uninterruptible power supply"
Inventor: HARDCASTLE PETER KEITH
IPC: H02J9/06
Filed: 1990-03-12
Abstract: An uninterruptible electrical power supply of the on-line type comprises an inverter 5 having an input for receiving rectified AC power from a primary commercial mains supply 1 via a rectifier 2 in normal operation of the power supply. A back-up battery 4 is connected to the output 6 of the inverter 5 via a battery charger 3 which maintains the battery 4 charged during normal operation. The battery 4 is connectible to the input of the inverter 5 to power the inventor 5 in the event of an interruption in the primary power source. The recharging of the battery 4 from the output of the inventor in normal operation enables the battery charger 3 to be simplified. <IMAGE>
Patent GB-2242501-A (GB)
Title: A friction clutch
Inventor: NASH IAN ANTHONY
IPC: F16D13/38
Filed: 1990-03-29
Abstract: A friction clutch includes a hub and driven plate assembly in which three carbon driven plates (60, 61, 62) are mounted on a hub (8), the hub (8) has radially outwardly extending splines (18) thereon and the driven plates have radially inwardly extending teeth (64) for engagement with the splines (18) such that the hub can slide axially relative to the driven plates (60, 61, 62) when the driven plates are held axially by driving plates (73, 74, 76, 78). Roll pins (30, 36, 38, 40) are each held in holes through two adjacent splines such that the roll pins are between the driven plates (60, 61, 62) and limit axial movement of the hub relative to the driven plates.
Patent GB-2243064-A (GB)
Title: An ohmic heater
Inventor: SIMPSON DAVID PRESTON
IPC: F24H1/10
Filed: 1990-04-10
Abstract: An ohmic heater comprises at least two electrodes 1 contained within a vessel 2 such that the electrodes lie along the length of the vessel 2. The vessel 2 has inlet and outlet ports 4 and 12 in the top and bottom through which a fluid to be heated flows, passing through the vessel 2 along the length of the vessel 2. The electrodes 1 are equally spaced about the axis of the vessel 2 and when in use, are connected to a power supply, such that the total voltage at any point in time at the electrodes is near or at zero. Hence, when in use, a current passes perpendicular to the flow of the fluid, but the electric potential on the axis is near to zero, and hence the leakage current from the ohmic heater is substantially reduced.
Patent GB-2235555-A (GB)
Title: Circuit for performing parallel multi-byte write test of a semiconductor memory device
Inventor: CHOI YOON-HO
IPC: G11C29/28
Filed: 1990-06-13
Abstract: A circuit for multiple-byte-wide parallel test writing of data to memory cell array blocks 10-40 has a plurality of data input buffers C1-C4, a plurality of data bus selectors A1-A4, and a plurality of clock pulse generators AA1-AA4 for generating control clocks for individual data input drivers B1-B16 in response to a test mode enable signal and a column/ row address signal. The drivers B1-B16 apply the outputs of the data bus selectors A1-A4 to all of the block input/output lines 100 at the same time. Thereby, the circuit may write into the memory blocks 10-40 data having a greater number of bit lines than that of the data buses AB1-AB4 without increasing the layout area nor increasing the load on the bus lines. <IMAGE>
Patent GB-2236588-A (GB)
Title: Fuel vapouriser
Inventor: MILLENER PHILIP JAMES
IPC: F23R3/32
Filed: 1990-07-23
Abstract: A fuel vapouriser is formed from two concentric tubes 9, 10 and a mixture of fuel and air having a high proportion of fuel passes along the annular space 11 between the two tubes while air alone passes along the inner tube 10. Fuel is directed into the annular space 11 by nozzles 20 of an injector 14, the two streams mixing at the discharge end 19 of the vapouriser. Strakes 15 form a plurality of gas flow passages in the annular space 11. The vapouriser may be of T-shape (Figs 4 to 5c, not shown). <IMAGE>
Patent GB-2252417-A (GB)
Title: Test cell for applying an angularly variable compressive load
Inventor: SMART BRIAN GEORGE DAVIDSON
IPC: G01N3/02
Filed: 1991-02-01
Abstract: The present invention relates to a test cell (1) suitable for use in applying directionally variable three dimensional stress fields to cylindrical test specimens (6) normally obtained by conventional coring techniques used for sample recovery. The test cell (1) comprises a cell body (2) having a barrel (4) extending therethrough for receiving a test specimen (6). The barrel (4) has an array (8) of elongate tubes (10) mounted side-by-side so as to line the inside wall (12) of the barrel. The tubes (10) have flexible sidewalls (14) and are formed and arranged for connection to a pressurised fluid supply (16). The test cell (1) also includes a control system (15) so that at least one tube (10a) can be supplied with pressurised fluid at a different pressure to that in another tube (10b) so as to provide an angularly variable radial pressure loading on the test specimen (6) mounted in the barrel (2).
Patent GB-2241006-A (GB)
Title: Steering a mining machine
Inventor: LEWINS FOSTER
IPC: E21C35/10
Filed: 1991-02-11
Abstract: A method of steering a double-ended ranging drum mining machine includes the steps of positioning a first current out roof follower means (15) at or adjacent the centre of the machine and a second previous cut follower means (19) at or adjacent the centre of the machine, measuring the machine tilt using third means, estimating coal thickness using fourth means (14) and generating algorithms therefrom whereby the height differences between the points on the current and previous cut roof can be calculated to control and steer the leading cutting drum, the algorithms being generated in such a manner that cumulative errors along or towards the face are minimised or eliminated. <IMAGE>