baber/WOPTO huggingface dataset:
Patent GB-2165721-A (GB)
Title: A speech facility for a facemask
Inventor: DICKINSON CHARLES WILLIAM
IPC: H04R1/08
Filed: 1985-10-10
Abstract: A method and apparatus for imparting a speech facility to a face mask or the like in order to reproduce outside the mask the voice of a wearer. Electronic circuitry 31 is employed in conjunction with a microphone 35 and a speaker 25 to reproduce the voice of the wearer. By using electronics incorporating an amplifier, the desired output sound level can be achieved without the need for the wearer to shout. The electronic components are accommodated within an airtight casing 21 which is adapted to be secured to the mask in an airtight manner. An airtight membrane 27 is provided over the speaker and forms part of the airtight casing. In one embodiment the microphone 35 is disposed within the face mask and connected to the electronics by wires. In another embodiment, the wearers voice is communicated to the microphone by way of a sound transmission tube which extends from the apparatus into the face mask. <IMAGE>
Patent GB-2169417-A (GB)
Title: Liquid crystal lens having a variable focal length
Inventor: OKADA TAKAO
IPC: G02F1/1347
Filed: 1985-12-20
Abstract: A liquid crystal lens having variable focal length includes a cell in which a liquid crystal (6) is confined. The magnitude of a voltage applied across the liquid crystal may be changed to control the focal length of the lens. The cell is defined by transparent plates (1, 2), at least part of which is formed of a photochromic material or a material which acts as a barrier to harmful rays. In this manner, the amount of transmitted light can be controlled reversibly in accordance with the amount of incident light so that harmful rays, such as ultraviolet rays, infrared rays or dazzling rays can be filtered out. The filter may comprise an acrylic resin with neodymium, or a separate liquid-crystal cell. <IMAGE>
Patent GB-2185539-A (GB)
Title: Pumping apparatus
Inventor: WALKER BRIAN KNOWLES
IPC: F04B43/12
Filed: 1986-01-17
Abstract: The apparatus includes a peristaltic type pump having a flexible pipe 11 with its inlet end 27 located above the region of compression thereof and continuously supplied via an elevated reservoir 26, whereby there is no need for the pipe to be highly resilient to generate suction forces. The apparatus is used for pumping water from a river 17 to an irrigation channel or the like without the use of an external power supply and comprises a rotor 12 mounted on a floating structure 15, 16. The lower part of the rotor is submerged in the river and water pressure on rotor blades 20 causes rotation of the rotor. A cavity 22 formed in each blade transfers water from the river to the elevated reservoir. A pumping part 19 of the rotor has rollers 28 on its periphery whereby each roller in turn contacts, compresses end rolls along a length of the flexible pipe, thereby forcing water in the pipe towards the outlet end 30 thereof. <IMAGE>
Patent GB-2171660-A (GB)
Title: Railway vehicle
Inventor: LATHAM JOSEPH
IPC: B61F1/10
Filed: 1986-02-17
Abstract: A railway vehicle (1) has a load carrying body (2) and headstocks (4) at each end of the body. At least one of the headstocks (4) has at least one compartment in which brake equipment for the vehicle may be located. The body (2) is mounted on two small-wheel bogies (3) and is equipped to carry containers. The compartment may carry brake control equipment. <IMAGE>
Patent GB-2188310-A (GB)
Title: A process for the preparation of silica particles
Inventor: KOUWENHOVEN HERMAN WOUTER
IPC: C01B33/16
Filed: 1986-03-27
Abstract: A process for the preparation of silica particles which comprises:     a. preparing a silica hydrosol by mixing an aqueous solution of an alkali metal silicate with an aqueous solution of an acid and allowing the reactants to react,   b. converting the hydrosol into droplet form, c. shaping the droplets in air or in a liquid which is not miscible with water, d. partially pre-drying the hydrogel particles by contacting the hydrogel particles with a water miscible organic solvent (e.g. an alcohol, ester or ketone) at a temperature below 100 DEG C and allowing to extract a part of the water from the hydrogel, e. subjecting the partially pre-dried particles to a hydrothermal treatment,   f. decreasing the cation content of the hydrogel particles and   g. drying and optionally calcining the silica particles. o
Patent GB-2185255-A (GB)
Title: Pyrazolo-isoquinoline compounds
Inventor: TULLY WILFRED ROGER
IPC: C07D471/04
Filed: 1987-01-13
Abstract: Compounds of the formula I   <IMAGE>  [wherein R represents a hydrogen atom, a C1-8 alkyl group or a C2-8 alkenyl group (either of these groups being optionally substituted by a C6-10 monocyclic or bicyclic aryl group, or represents a C3-6 cycloalkyl group or a C1-8 haloalkyl group; R3 represents a hydrogen atom, a C1-8 alkyl group or a C6-10 monocyclic or bicyclic aryl group; R4 represents a C1-8 alkyl group or a C2-8 alkenyl group (either of these groups being optionally substituted by a C6-10 monocyclic or bicyclic aryl group), or represents a C3-6 cycloalkyl group or a C6-10 monocyclic or bicyclic aryl group (optionally substituted by a C1-6 alkyl group or by a halogen atom); and R5 represents a hydrogen or halogen atom, a C1-8 alkyl group, a C1-8 alkoxy group or a nitro group] and acid addition salts thereof exhibit anti-inflammatory activity.
Patent GB-2202373-A (GB)
Title: Field effect transisitor structure
Inventor: LEE WONG SANG
IPC: H01L27/06
Filed: 1987-03-19
Abstract: The absolute magnitude of the frequency dependent conductance component of a primary Schottky field effect transistor (11) is reduced by the provision of an auxiliary transistor 12 coupled with its source-drain path in series with the primary transistor 11. The threshold voltage of the primary transistor is more positive than that of the auxiliary transistor. The structure has improved high frequency properties and can be used as an amplifier, as the current source of a differential amplifier, and in switched capacitor filters. <IMAGE>
Patent GB-2204611-A (GB)
Title: Apparatus for washing a toilet seat
Inventor: MAK CHAI-LEUNG
IPC: E03D9/00
Filed: 1987-04-14
Abstract: A water closet has a seat 6 mounted on a support 5. A pipe 25 feeds flushing water from a cistern 2 through a conduit 15 surrounding the seat and through apertures 29 onto the seat 6 to wash it. The conduit is part of a guide 8 which guides the water into the bowl 1. A hot air blower may be provided to dry the seat. <IMAGE>
Patent GB-2210877-A (GB)
Title: Cephalosporins
Inventor: LOOKER BRIAN EDGAR
IPC: A61K31/545
Filed: 1987-10-14
Abstract: Cephalosporin compounds are disclosed of the general formula (I> <IMAGE>  wherein  R<1> represents a hydrogen atom or a carboxyl blocking group;  R<2> represents a hydrogen atom or an amino protecting group; R<3> and R<4> each represents a hydroxy or substituted hydroxy group or R<3> and R<4> together represent a cyclic protected diol group; Z is @S or @S->O ( alpha - or  beta -); the dotted line bridging the 2-, 3-, and 4-positions indicates that the compound is a ceph-2-em or ceph-3-em compound; and non-toxic salts and solvates thereof.
Patent GB-2199354-A (GB)
Title: Enhanced oil recovery process
Inventor: BOCK JAN
IPC: C09K8/588
Filed: 1987-12-22
Abstract: Oil recovery from a production well is enhanced by injection of aqueous solution of a hydrophobically associating, water-soluble polymers containing one or more water soluble monomers and a water insoluble monomer group. The water-insoluble group is a higher alkylacrylamide and the water soluble groups are (a) acrylamide and (b) a salt of (i) acrylic acid or (ii) a salt of an ethylenically unsaturated sulfonic acid. The polymers have the general formulae:   <IMAGE>   where R1 is a C6 to C22 alklylcycloalkyl group; R2 is hydrogen or a C6 to C22 alkyl or cycloalkyl group, or a C1 to C3 alkyl group; A is SO3-M???, phenyl-SO3-M??? or CONHC(CH3)2 CH2 SO3-M??? M??? is an alkali metal or ammonium cation; X is 5-98 mole per cent, y is 2-95 mole per cent and Z is 0.1-10 mole per cent or   <IMAGE> where R1, R2, A & M are as defined above and W to 1-80 mole per cent, X is 10-90 mole per cent Y is 2-40 mole per cent and 2 is 0.1-10 mole per cent
Patent GB-2227453-A (GB)
Title: Franking machine communication system
Inventor: HERBERT RAYMOND JOHN
IPC: G07B17/00
Filed: 1988-12-30
Abstract: A franking system comprises a franking machine unit and peripheral units such as a weighscale, printer and computer. The franking machine unit and each peripheral unit is provided with a modem 23 coupled to the mains supply connection 20 for each unit. When the units are powered from a common mains electricity supply 19, data communication between the units is accomplished via the common mains power supply connections 20. Thus, there is no requirement for separate data input and output ports for data transmission with the secure housing of the franking machine; one access point is sufficient for both power supply and data transmission. <IMAGE>
Patent GB-2216097-A (GB)
Title: Portable dual wound hose reel
Inventor: POOLE GEOFFREY GORDON
IPC: B65H75/40
Filed: 1989-02-21
Abstract: In a portable hose reel, the hose is turned on itself to form two single windings in adjacent, discrete sections between reel flanges 5, 7. A framework supports the reel on spiked feet 4 and permits it to be rotated about a vertical axis from a stable horizontal position. The hose in its two sections are withdrawn together for use, extended further when needed without interruption of supply and rewound for convenient storage after use. Hose guides, e.g. rollers, are mounted on the framework. Hose exit guides may be diametrically located on the framework which, in conjunction with runners or wheels supporting the framework, allows the reel to be trailed to dispense hose. <IMAGE>
Patent GB-2216932-A (GB)
Title: Inspection and repair of tubular bracing members of submerged marine structures
Inventor: RENAULT JEAN-PIERRE
IPC: E02B17/00
Filed: 1989-03-07
Abstract: In a submerged marine structure 1 of the tubular trellis type for supporting an off-shore platform the bracing members, in the form of hollow bars 3 are provided at both ends with respective connectors 4 and 5 fitted with protective caps 7, one of the connectors 5 being provided with a non-return valve 8. To check the sealing-tightness of the bars 3, the connector 5 which is fitted with a non-return valve 8 is connected to a compressed air source and a watch maintained to note any release of air bubbles or any drop in pressure. In the event of damage, repair entails injecting cement through one of the connectors 5, the excess being drawn off through the second connector 4, so that the interior of the bar is filled. The injection of the cement makes it possible to restore the strength of the bar. The bar may be sealed externally during the injection of the cement by a two piece steel sleeve (9, fig 4 not shown) lined with a flexible material. <IMAGE>
Patent GB-2232749-A (GB)
Title: Water heaters using waste heat: cleaning heat exchangers
Inventor: RUTHERFORD MATTHEW STEPHEN
IPC: F28D21/00
Filed: 1989-05-31
Abstract: A heat exchanger (61) suitable for use with a domestic hot water shower comprises a casing (2), and an element assembly (6). Warm waste water from the shower is passed through the casing (2) cavity over the element assembly (6) and acts to warm the flow of primary water which passes through the element assembly (6). A pump may act to increase the velocity of the waste water relative to the element assembly (6) and/or the casing (2), and to prevent the build up or deposition of sludge and/or dirt therein/thereon. The pumping action may be provided by a cleaner (64) comprising one or more rotating areas (8) fitted with flexible fibres (9). Energy extracted from the primary water flow may be used to power the pump/cleaner. A valve may be provided for maintaining the predetermined level of waste water within the casing cavity. <IMAGE>
Patent GB-2220391-A (GB)
Title: A wheelbarrow
Inventor: RIGGER ROSS STEWART
IPC: B62B1/18
Filed: 1989-06-09
Abstract: A wheelbarrow (2) comprises a front wheel (4), axle means (6) on which the front wheel (4) rotates, a pair of handles (8), a pair of rear legs (10) positioned between the front wheel (4) and the handles (8), a hopper (12) and chassis means (14) for supporting the hopper (12), the chassis means (14) including a front portion which extends in front of the axle means (6). The hopper (12) may optionally be releaseably secured to the chassis means (14), in which case the wheelbarrow (2) includes a platform portion (20) for carrying goods when the hopper (12) is not in position. The platform portion may be a metal mesh. <IMAGE>
Patent GB-2237375-A (GB)
Title: Stabilizing draught in flue systems
Inventor: STOKES KEITH HARRY
IPC: F23L11/02
Filed: 1989-09-07
Abstract: The products of combustion of a heat source 2 are diluted by air entering the chimney 4 via a stub flue portion 10 to maintain the draught substantially constant. The entry of air into the stub flue portion 10 is controlled by a valve member 20 carried by a diaphragm 24 separating chambers 26 and 28 which communicate respectively via pipes 30, 32 with the chimney 4 and with the room in which the heat source is located. The position of the diaphragm 24 and hence of the valve member 20 is dependent upon the pressure difference between the chimney and the room. A valve responsive to the rate of flow rather than pressure in the flue system may alternatively be provided. <IMAGE>
Patent GB-2223401-A (GB)
Title: Folding table
Inventor: SHAKESHAFT DAVID JOHN
IPC: A47B3/083
Filed: 1989-10-06
Abstract: A folding table comprising a plurality of flap sections 3, 4 & 5, and a main section 2, each of the sections being provided with two converging edges 8 & 11, 10 & 13, 12 & 9 and 6 & 7 the sections being arranged adjacent to one another with the converging edges of adjacent sections being located adjacent one another, the converging edges of adjacent flap sections being connected hingedly 14 & 15, the converging edge 8 of a first flap section 3 being connected to a first converging edge 7 of the main section 2 and the converging edge 9 of a second flap section 5 being located adjacent to but separable from the second converging edge 6 of the main section 2, the main section being supported by a plurality of fixed legs 16, 16' and 17 to at least one of which is connected for rotational movement an additional leg 20. <IMAGE>
Patent GB-2271831-A (GB)
Title: Explosive mine including shaped charge warhead
Inventor: HALKETT WILLIAM ALEXANDER MCRA
IPC: F42B1/036
Filed: 1989-11-01
Abstract: A land mine 10 including a shaped charge warhead 12 has a metal charge liner 15 to be effective against vehicle armour and the mine is made unsusceptible to detection by mine detection apparatus, which relies upon induction and detection of eddy currents or the like in metallic parts of the mine, by making the liner so that detectable eddy current flow is impeded. The liner may be formed by moulding epoxy resin coated particles of copper powder into a liner shape or by deforming a laminated preform sheet the layers of which are metal sheets separated by an adhesive or insulator such as epoxy resin or metal oxide. The sheets may be thin metal laminae having high sheet resistivity or thicker sheets having apertures, such as a mesh. Such laminated preform, a single sheet preform or a machined liner may be apertured with slots or other apertures to interrupt eddy current paths in the liner. <IMAGE>
Patent GB-2239889-A (GB)
Title: Self levelling step ladders
Inventor: MEDLICOTT PAUL GEOFFREY
IPC: E06C1/22
Filed: 1990-01-09
Abstract: A set of aluminium step ladders which may be placed down on any uneven or sloping surface whereupon all of the four legs of the step ladder will find their own footing automatically. As shown in Fig 3, two U-shaped frames 10 are hinged together by a slidable hinge, and each includes a steel coil interconnecting telescopic feet 11. When the user climbs the steps the weight of that persons body will cause the sub frame 13 on the front frame to move downwards and so locking the legs in position until that weight is removed whereupon the legs will be free again. The coil in the rear frame is locked by pressure in the coil acting against a brake shoe. <IMAGE>
Patent GB-2231893-A (GB)
Title: Link for reinforcement cages
Inventor: PALMER GEOFFREY WALTER JOHN
IPC: E04C5/06
Filed: 1990-01-15
Abstract: A link is described for use in assembling reinforcement cages for concrete. The link 10 is in the form of a rod bent around the perimeter of a regular polygon and looped at each apex of the polygon to form a loop lying within the perimeter of the polygon for receiving and locating a reinforcement bar. U-shaped bends 30 in the sides of the polygon may be provided to act as axles for spacer wheels 20 so that the wheels can not slide along the link nor cant about their axles. <IMAGE>
Patent GB-2243858-A (GB)
Title: Semi-automatic locking car parking bollard
Inventor: FALZON ROBERT ALFRED
IPC: E01F13/08
Filed: 1990-02-16
Abstract: The semi-automatic locking car parking bollard has a push button locking mechanism 10 so that the owner does not have to use keys to relock the bollard but only to unlock it. The bollard has a detachable top plate enabling maintenance at a later date if needed. <IMAGE>
Patent GB-2237467-A (GB)
Title: Electromagnetic transducer for surface waves
Inventor: PRITCHARD SUSAN ELIZABETH
IPC: G01H5/00
Filed: 1990-08-20
Abstract: An electromagnetic transducer 30 comprises a single coil of wire defining two spaced-apart detection portions 40 and magnets 34 arranged to create a magnetic field in the vicinity of the detection portions. For use at frequencies above 1 MHz the coil should be wound so as to minimize the enclosed area, and hence the inductance, and can be tuned by a capacitor 46 across its terminals. The transducer enables the speed of surface waves in a material under test to be measured, from the time (or phase) difference between generation of an emf in the two detection portions by the passage of a surface wave in the material. <IMAGE>
Patent GB-2235679-A (GB)
Title: Apparatus for feeding packaging machines with stacks of sheet material
Inventor: BOLDRINI FULVIO
IPC: B31B50/04
Filed: 1990-09-03
Abstract: An apparatus for feeding a cigarette packaging machines with stacks 2 of cardboard blanks (2' Figs 4, 5) includes a centering means (9, 10, Fig. 6) for locating a supporting member 4 bearing a plurality of stacks 2 of blanks, the stacks being arranged mutually side by side so as to form parallel and mutually adjacent rows 5; and a vertically and horizontally displaceable unit 12 for removing and transferring individual rows, provided with a head fitted with dependent pushers 20 which are arranged vertically side by side and are adapted to move a single row (5) of stacks (2) in a horizontal transfer direction onto a head-mounted platform 24, and then across the platform onto a conveyor 3 for input to the packaging machine when the platform together with the head has been raised to the level of the conveyor. Layers of stacks are separated by sheet which may be removed by grippers and shredded. in another embodiment (Figs 9-11) the loaded support member is loaded onto a turn-table and centred, and the vertically and horizontally movable unit 12 mounts a plurality of suction devices for lifting and transporting the individual row and plurality of dependent levers for pushing the row across a platform constituted by a plurality of strips onto the conveyor. <IMAGE>
Patent GB-2240546-A (GB)
Title: Epoxy resin adhesive composition
Inventor: YAMAZAKI HAJIME
IPC: C09J163/00
Filed: 1991-01-17
Abstract: Adhesive compositions useful in electronic applications comprise an epoxy resin, a carboxylic group-containing acrylonitrile-butadiene or methacrylonitrile-butadiene copolymer, a maleimide derivative and an imidazole compound, each component being present in a specified amount. The resultant composition is electrically insulative, thermally resistant, highly capable of fabrication at low pressure and stably storable.
Patent GB-2240291-A (GB)
Title: Drill device having intermittent feed
Inventor: SHOJI MICHIHIRO
IPC: B23B47/20
Filed: 1991-01-24
Abstract: A drilling operation is effected by means of a drill feed motor (72) under the control of an oscillation signal which is repeatedly set to "H" and "L" in a preset period corresponding to an output of an oscillator circuit (62). This is supplied to the control terminal (48C) of a firing pulse generator (48) which interrupts supply of the control signal to the control terminal of a triac (52) in the above preset period to interrupt supply from a commercial AC power source (100) to a bridge-type rectifier (54) so as to intermittently drive the motor (72). As a result, a drill spindle motor (22) can be intermittently fed towards a to-be-worked object by means of the feed motor (72), and. when the feeding operation is interrupted, a cutting operation can be instantaneously stopped and swarf can be cut apart. <IMAGE>
Patent GB-2256346-A (GB)
Title: Sub-carrier broadcast system
Inventor: GURYEL ALI
IPC: H04H20/81
Filed: 1991-04-19
Abstract: A broadcast system for transmitting receiving signals particularly suitable for FM radio, in which a sub-carrier carries auxiliary program me material such as background music for use as "music-on-hold" in a telephone PBX system, and data such as electronic advertising, news or the like. The data can be displayed to individual users on the telephone system, by means of displays incorporated in their telephone units or independent display units. Background music, similarly data can be utilised independent of telephone system for general background music and display means in various applications such as reception areas, bank/building society, public areas etc. The signals may include a code which must be decoded in the receiver and validated before proper reception is enabled.
Patent GB-2245738-A (GB)
Title: Flexible sheeting
Inventor: MACPHERSON HUGH
IPC: B65D65/40
Filed: 1991-05-31
Abstract: Flexible sheeting 10 suitable for use in forming a security enclosure comprises a plurality of flexible layers which are laminated together. Layer 11 is made of an electrically insulating material and its opposite surfaces are laminated to layers 12, 13 each of which is made of an electrically-conductive material which is solid at ambient temperatures and which fluidises at comparatively low temperatures. Layers 14, 15 are electrically insulating outer coverings. Penetration of the sheeting using e.g. a laser beam will cause melting of the immediately adjacent electrically-conductive material, which will then flow through the hole produced, bridging the gap between layers 12 and 13. This may be detected by a monitoring circuit. Further, two layers 31, 32 of electrically responsive fibrous material may be included. The length of the fibres is greater than the combined thickness of layers 11, 12 and 13 so that if the enclosure is pierced, fibres from one layer will be forced into contact with fibres from the other layer. This may also be detected by the monitoring circuit. <IMAGE>