baber/WOPTO huggingface dataset:
Patent GB-791198-A (GB)
Abstract: 791,198. Variable capacitors. AMRON (ISRAEL), Ltd. June 6, 1956 [June 15, 1955; March 5, 1956], No. 17503/56. Class 37. A trimmer capacitor, as shown in Fig. 1, comprises a cylindrical metal sleeve 1 embedded in a body of thermoplastic material and a cylindrical member 3 which moves coaxially within the sleeve 1. The body provides the mounting means 10 and the dielectric layer 11 between the electrodes 1, 3. The cylindrical member 3 is threaded inside and engages with a screwed pin 5. Alternatively the member 3 can be replaced by a screwed rod 14 as in Fig. 3. Compression of the dielectric between the electrodes enables the temperature coefficient of the capacitor to be controlled. The temperature coefficient may be varied by making the electrodes of unlike metals, or by varying the dimensions of the electrodes or the width of a longitudinal slot in the outer electrode.
Patent GB-2030234-A (GB)
Title: Railway bearings
IPC: B61F15/00
Filed: 1979-04-18
Abstract: A railway vehicle journal box 40 and bearing assembly is described wherein a conventional "brass" type of bearing may be replaced to an uprated cylindrical bearing liner assembly without undue modification to the journal box. The bearing proper comprises an axle running within a cylindrical bearing liner in a bearing housing, the housing being located within the existing journal box by means of various wedging assemblies. The housing is located in a first direction parallel to the axis of the axle by a wedge 41 which abuts a flange 56 on the housing and a face 57 on the journal box. Movement of the housing in a second direction parallel to the axis of the axle is prevented by a U-shaped member whose limbs 47,48 engage abutment surfaces on the housing and the journal box. The limbs are joined by a spring strip 51 which extends across one end of the housing. <IMAGE>
Patent GB-2022024-A (GB)
Title: Electrostatic Recording
IPC: B41J2/39
Filed: 1979-05-29
Abstract: A backup electrode arrangement 13 comprises a resilient insulating member 18 across one surface of which are a plurality of electrode segments separated from one another and comprising an electrically resistive material forming a shoe 22. The electrode shoes 22 provide pressure engagement against an array 12 of recording electrodes in an electrostatic recorder with a recording medium 11 disposed therebetween. The electrical resistivity of the shoes is sufficiently high to protect the recording electrodes from pinhole shorts in the dielectric layer of the recording medium 11. With the backup electrode positioned directly opposite to the recording electrode array 12, the charging path impedance is reduced permitting reduction in writing time and a corresponding increase in overall recording time. <IMAGE>
Patent GB-2054353-A (GB)
Title: Improvements relating to liquid containers such as chalices
IPC: A47G33/00
Filed: 1979-06-27
Abstract: A container for a liquid comprises a transparent tube (1) which is closed at both ends (2), one end of the tube being retained within the base portion (3) of the chalice, cup or the like, whilst the other end of the tube is retained by the bowl portion (4) of the chalice etc so that the tube (1) forms a stem. The tube may contain water from a well-known well and may be part of an article of jewellery having a chain with two ends connected to the bowl portion (4). <IMAGE>
Patent GB-2026690-A (GB)
Title: Chemiluminescent-labeled conjugates for use in specific binding assays
IPC: G01N33/58
Filed: 1979-07-06
Abstract: Chemiluminescent-labeled conjugates of the formula:  Chemi-R-L wherein Chemi represents a moiety which is capable of undergoing a change in chemical structure with the production of light, R is a linking group, and L is a specifically bindable ligand, such as an antigenic protein or polypeptide, a hapten or an antibody or a binding analog thereof, or a hormone, vitamin or drug or a receptor therefor, are used in arrays for the ligand or for a binder for the ligand. The chemiluminescent moiety may be luminol, isoluminol, pyrogallol or luciferin. Preferred labelled conjugates are of the formula:   <IMAGE> wherein one of R<1> and R<2> is hydrogen and the other is -NR<3>R<4>; R<3> is hydrogen or straight chain alkyl containing 1-4 carbon atoms and R<4> is   <IMAGE> wherein n=1-3 and L(CO)- is the ligand or analog bound through an amide bond. Intermediates produced in the synthesis of such preferred conjugates are also disclosed.
Patent GB-2054461-A (GB)
Title: Silk screen printing machine
IPC: B41F15/42
Filed: 1979-07-25
Abstract: A silk screen printing machine comprises an impression cylinder 20 and a doctor-blade 3B arranged parallel to it. The doctor-blade 3B is supported on a beam 21 which is supported at opposite sides respectively on columns 7 which are connected to the respective pistons of pneumatically operable piston and cylinder devices 8. These devices may be fed either from an air compressor forming part of the machine or from a central air compressor through electrically controlled valves in order to lift and lower the doctor- blade 3B relative to the impression cylinder 20. Further piston and cylinder devices 1, 2 may be provided to further control the doctor. <IMAGE>
Patent GB-2040987-A (GB)
Title: Solid detergent composition for improved greasy soil removal
IPC: C11D1/22
Filed: 1978-06-20
Abstract: Built laundry detergent compositions containing specific mixtures of selected anionic, nonionic and water-soluble cationic surfactants. The compositions are especially effective in removing greasy soil from fabrics.
Patent GB-2065747-A (GB)
Title: Improvements in or relating to tunnelling
IPC: E21D9/08
Filed: 1979-11-27
Abstract: Shield apparatus (10) comprises a first shield portion (11) the second shield portion (12) and means (15) to move the shield portions relative the one to the other to expand or contract the shield apparatus along the direction of tunnelling. The shield portions (11, 12) telescopically engage the one with the other to provide continuous protection along the length of the shield (10) for all relative separations of the first and second shield portions (11, 12). <IMAGE>
Patent GB-2037532-A (GB)
Title: Image Reproduction Systems With Digital Enlargement
IPC: H04N1/393
Filed: 1979-11-28
Abstract: In image reproduction apparatus of the kind in which an original on a drum is scanned by an analysing head and the resulting electric signals are converted into digital form, stored, thereinafter extracted, and reconverted to analogue form to control an output drum exposing scanner, it is ensured that the store capacity is utilized to the fullest extent compatible with other limiting factors by calculating a trial output resolution (Ro/p), based on the store capacity and the required picture height; deriving a trial input sampling frequency (Fi/p) from the trial output resolution and from the required enlargement (E), output drum rotary speed (S), output drum circumference (C), and ratio of output drum diameter to input drum diameter (D); comparing the maximum rate of analogue-to-digital conversion (FADC) with the maximum input sampling rate for a minimum signal-to-noise ratio (FS/N) and selecting the lower of these rates as a limiting input sampling frequency; comparing the calculated trial input sampling frequency (Fi/p) with the said limiting input sampling frequency and using the smaller as the actual input sampling frequency from which are calculated multiplier and divider factors for controlling the read and write rates for the store and the rate of traverse of analysing and exposing heads parallel to the axes of the analysing and exposing drums. <IMAGE>
Patent GB-2059489-A (GB)
Title: Apparatus and method for feeding insulating material into the gap of a cavity wall
IPC: E04B1/76
Filed: 1979-12-05
Abstract: Apparatus for feeding insulating material into the gap (1) of a cavity wall (2), comprises a feed line (3) for a gas flow induced by a blower, to which gas flow a dry insulating material is added the feed line dividing into a plurality of branch lines (10), each of which is equipped with a separate outlet (13) which can be brought into communication with the gap of the cavity wall through openings (5) in one of the leaves (4) of the cavity wall. <IMAGE>
Patent GB-2040960-A (GB)
Title: Emulsion Process for Preparing Elastomeric Vinyl Acetate-ethylene Copolymers
IPC: C08F2/00
Filed: 1979-12-28
Abstract: Elastomeric vinyl acetate- ethylene copolymers having high Mooney viscosity and low gel content are prepared by the process which comprises:   a) copolymerizing from 40% to 70% by weight of vinyl acetate with from 60% to 30% by weight of ethylene in an aqueous emulsion reaction medium to provide a latex, the reaction medium containing:   (i) at least one surface active agent in an amount above 2.0% by weight of the total monomer.   (ii) a polymerization catalyst, and (iii) at least one protective colloid in an amount of less than one part for each part by weight of total surface active agent, with the total weight of the surface active agent and vinyl acetate being present in the reaction medium at the commencement of copolymerization; and,   b) recovering the vinyl acetate- ethylene elastomer from the latex.
Patent GB-2046149-A (GB)
Title: Improvements In Or Relating to Low-pressure Diecasting Machines for Non-Ferrous Metals
IPC: B22D17/22
Filed: 1980-03-20
Abstract: A casting machine comprises a melting furnace and a separately supported carrying column 4. The column 4 is axially fixed but capable of rotation. A supporting frame 5 secured on the column 4 comprises a guiding device 5c parallel to the axis a of the column, on which guiding device a head bearing 6 is displaceable in a vertical direction. A carrying support 7 comprising a cross- member 7a is mounted on the head bearing 6 so as to be pivotable around a horizontal axis c of said head bearing. Two bearers 8 which may be displaced towards and away from each other along the cross-member 7a, which are pivotable moreover around the axis d of the cross- member, are located in the cross- member. Each of the two bearers 8 carries a die carrier 9, these being rotatable around their axes e on the one hand, and on the other hand being pivotable around an axis f at right angles thereto, from an aligned position of their axes e into a parallel position. <IMAGE>
Patent GB-2051474-A (GB)
Title: Mounting arrangements for electrical components
IPC: H01L23/42
Filed: 1980-04-08
Abstract: Thermal stresses which could lead to fracture of a plate 6 of boron nitride forming part of a thermally conductive electrically insulating mounting for an electrical component 1 such as a high power thyristor, are minimised by providing thin sheets 7, 8 of a material of relatively low coefficient of expansion (eg Mo or W) between plate 6 and adjacent massive bodies 4, 5 which typically are of Cu. A casing 9, 10, 11 may surround the boron nitride plate to contain an electrically insulating oil in which it is immersed. <IMAGE>
Patent GB-2049409-A (GB)
Title: Frame for a purse
IPC: A45C13/04
Filed: 1980-04-11
Abstract: A frame for a purse or the like in which two hingedly connected members are provided, each member being folded from a blank to form a pair of side members 10, 10a and a cross- member 11 in which the cross members are of channel section with one leg of the channel lying in the plane of the side members, the cross member having a web 16 at right angles to the leg which lies in the plane of the side members and the other leg folded about a notch 15 which extends across the full length of the top member and is spaced from and parallel to the junction 14 between the web and the other leg. <IMAGE>
Patent GB-2047103-A (GB)
Title: Dartboard
IPC: F41J3/00
Filed: 1980-04-15
Abstract: The invention provides target areas by using fine high tensile wires for the grid. The grid is formed in such a manner that the fine wires are not easily bent on impact but can be easily replaced should they become bent. The grid (11) has straight high tensile radial wires (17) running from an inner ring (20) to an outer ring, endless high tensile wires (18, 19) defining doubles and trebles and a plurality of pegs (18c, 18d, 19c, 19d) projecting in concentric circles from the board, the endless wires being held in tension around the circles of pegs. The endless wires preferably overlie the radial wires and are held clear of the dartboard surface. <IMAGE>
Patent GB-2051083-A (GB)
Title: Polyether-based Polyurethane Foams
IPC: C08G18/00
Filed: 1980-04-21
Abstract: A high-resilience, flexible or semi- flexible, flame-retardant, polyether- based polyurethane foam derived from a diol- or triol-based polyol which is at least 50% end-tipped with primary hydroxyl groups contains a flame- retardant system comprising, by weight, per 100 parts of the polyol:  30-80 parts alumina trihydrate;  5-20 parts antimony trioxide; and 3.6-36 parts chlorine provided by at least one, preferably liquid, chlorinated paraffin.
Patent GB-2051099-A (GB)
Title: Improvements in magnetic recording media
IPC: G11B5/702
Filed: 1980-05-15
Abstract: The magnetic tape consists of a base coated with ferromagnetic particles dispersed in a ternary binder composition the constitution of which falls within the shaded area of the accompanying constitution diagram. The binder composition consists of 35 to 70% polyurethane resin, 10 to 40% phenoxy resin and 10 to 40% of a nitrocellulose blended with vinyl chloride-vinyl acetate copolymer, the percentages being by weight of the binder. <IMAGE>
Patent GB-2061716-A (GB)
Title: Vehicle seats
IPC: B60N2/12
Filed: 1980-08-14
Abstract: A front vehicle seat (12) having a mounting arrangement including slides (35) slidably mounted on sideways (36) fixed to the vehicle structure to permit normal lockable fore and aft adjustment. The rear legs (20) of the seat are supported, e.g. by rollers 21, on intermediate sideways (22) rigidly mounted on the slides (35) and the front end of the seat is supported on pivotal links (16) pivotally connected to brackets (19) on the vehicle floor, as shown, or on the forward ends of the slide 35. The rear legs (20) of the seat are normally locked to the slideways (22) by a latch (29) but on release of the latch, the seat legs can move forward along the sideways (22) and, in so doing, the links (16) swing forwardly and downwardly until they extend generally horizontally forwardly of the brackets (19) in which position the front end of the seat is moved both forwardly and downwardly beyond its normal range of adjustment and the seat back is tilted forwardly by a corresponding amount to provide access to the rear seat. <IMAGE>
Patent GB-2061475-A (GB)
Title: Refrigerating Apparatus
IPC: F25B5/04
Filed: 1980-09-26
Abstract: Refrigerating apparatus includes freezing and refrigerating compartments to be controlled to different temperatures and with respective evaporators. During operation of a compressor (20), liquid refrigerant is always fed to the freezer evaporator (52), but is selectively fed to the refrigerator evaporator (48) by a feed control system including a vapor bubble pump (A), a tank (24) for storing liquid refrigerant prior to feeding it to the respective evaporators, and a conduit for feeding refrigerant to the freezer evaporator (52) by operation of the vapor bubble pump (A) whose continued operation acts to cut off the supply to the refrigerator evaporator (48) by reducing the level in tank (24). A part (38) of the conduit extends through the tank in heat exchange relation with the refrigerant stored in the tank to enhance efficiency of the refrigerating cycle. <IMAGE>
Patent GB-2064866-A (GB)
Title: Field effect semiconductor device
IPC: H01L21/268
Filed: 1980-11-28
Abstract: A field-effect semiconductor device comprises a source region (21), a drain region (23), a channel region between the source and drain regions and two control electrodes respectively overlying (19a) and underlying (7a) the channel region, these electrodes being insulated from the channel region by means of insulating layers (9, 15). The source to drain current of the device in operation is dependent on the potential of both the control electrodes, leads for external connection (7b, 19b) being normally provided for both electrodes. The device is suitable for use in logic circuits. One of the control electrodes may also be used to compensate for changes in device characteristics due to radiation. <IMAGE>
Patent GB-2068841-A (GB)
Title: Tactile element and keyboard including the tactile element
IPC: G06F3/02
Filed: 1981-01-26
Abstract: A tactile snap-action element for use in keyboards, the element comprising an arcuately shaped invertible first dome 126 and a second dome shaped actuating protrusion 128 extending from the invertible first dome 126, the actuating dome 128 protrusion being integral with the invertible dome 126 and being non-invertible. The element is operated by an actuation force which acts directly or indirectly through the non-inverting second dome to invert the first dome and to provide tactile feedback. The keyboard includes a plurality of keys 120, each key comprising an element, a conductive circuit 124 associated with the first dome 126 and movable with the inversion of the first dome to electrically contact a second conductive circuit 114 associated with the element. <IMAGE>
Patent GB-2076791-A (GB)
Title: Alpha calcium sulfate hemihydrate production
IPC: C01F11/46
Filed: 1981-04-08
Abstract: Light-weight  alpha -type calcium sulfate hemihydrate in a fibrous form, the fibres of which may intertwine to give a spherical particle form is continuously produced by a hydrothermal treatment in a tubular reactor of an aqueous slurry of a calcium sulphate starting material. The heating for the hydro-thermal reaction is provided by injection of steam into the slurry in the reactor.
Patent GB-2081023-A (GB)
Title: Reflector antenna
IPC: H01Q19/02
Filed: 1981-06-02
Abstract: A reflector antenna such as a Cassegrain or parabolic antenna (fig 1) which is intended for use in the microwave or millimeter wavebands has a supporting post or strut 4 which supports a component of the antenna and is located in the plane wave produced by the main reflector 1. The plane wave is therefore scattered and in order to improve the performance of the antenna the surface of the strut is modified (fig 5A) so as to cause random scatter of the primary wave so that the field strength of the scattered waves is reduced. <IMAGE>
Patent GB-2100456-A (GB)
Title: Dye image receiving elements comprising polymeric mordants
IPC: C08F289/00
Filed: 1981-06-17
Abstract: Dye image receiving elements for photographic material are described which have mordant layers comprising a graft polymer which contains gelatin, a monomer which when homopolymerised yields a water-insoluble polymer such as a vinyl or acrylic monomer, and a sulphated acrylate or methacrylate monomer.
Patent GB-2079695-A (GB)
Title: Axially adjustable steering wheel for vehicles
IPC: F16B7/14
Filed: 1981-07-08
Abstract: A steering wheel for vehicles is made axially adjustable on a steering column (1), by means of a polygonal- section element (3) which is clamped to the steering column and serves to connect the steering column (1) to a hub (4) of the steering wheel, the steering wheel hub (4) comprising a complementary shaped polygonal bore (5), being mounted with a sliding fit on the polygonal-section element (3) coaxially with the steering column, and being clamped in shape-locking manner to the said element. <IMAGE>
Patent GB-2087475-A (GB)
Title: Device for Closing and Opening Blinds, Shutters, and Hinged Window Members in General
IPC: E06B9/92
Filed: 1981-09-23
Abstract: A device for closing and opening blinds, shutters, and hinged window members comprises first and second linkages (3, 4, 5, 6) having each a first lever (3, 4), hinged to supporting means substantially rigid with a room wall or window frame, and a second lever (5, 6), operatively interconnected and cooperating with the first lever and being hinged to a respective blind or shutter element 19, 20, the first and second linkages being operatively interconnected together, an actuating means (21) being provided for controllably actuating said linkages to substantially simultaneously open, or close, the blind or shutter elements, and a locking mechanism effective to lock the blind or shutter in the closed position thereof. <IMAGE>
Patent GB-2095885-A (GB)
Title: Magnetic disc memory apparatus
IPC: G11B19/20
Filed: 1979-04-20
Abstract: A magnetic head is driven across a rigid magnetic disc with high track density by a stepper motor through a band structure including a spring bias for coupling the stepper motor drive to apparatus supporting magnetic heads above and/or below the spinning disc and for temperature compensating for disc/apparatus expansion and contraction. Viscously-coupled inertia apparatus damps the stepping motor's step- rotary motion, and spinning motion associated with the disc is used for cooling purposes. <IMAGE>
Patent GB-2088157-A (GB)
Title: Electric Flash Device
IPC: H05B41/32
Filed: 1981-10-13
Abstract: An electric flash device comprises a voltage converter circuit B for converting a direct current voltage to an alternating current voltage, a rectifier C, storage capacitor 22, a flash tube circuit F and trigger signal generating circuit E for triggering the flash tube. The electric flash device further comprises oscillation stop timing control means I and trigger signal control means J. According to the invention power loss is avoided, by stopping oscillation after a set time, and erroneous operation of the flash tube is avoided by the trigger signal control means. <IMAGE>
Patent GB-2086798-A (GB)
Title: Microporous cellulose membrane
IPC: A61M1/16
Filed: 1981-11-05
Abstract: A microporous membrane which has pore diameters of from 0.01 to 5  mu m, an ultrafiltration capacity of from 40 to 2000 ml/m<2>. h . mm Hg and an adjustable exclusion limit for molecular weights of from 70,000 to 3 million and which comprises hydrate cellulose regenerated from cuoxam solutions to which polyethylene glycol having an average molecular weight of from 100 to 1500 has been added is disclosed. A process for the production of such a membrane which comprises extruding a cellulose cuoxam solution, the spinning solution containing a copper salt in a quantity of from 40 to 60%, by weight, of copper, based on the weight of the cellulose, ammonium in a quantity of from 50 to 300%, by weight, of ammonia, based on the weight of the cellulose, and from 30 to 400%, by weight, based on the weight of the cellulose, of polyethylene glycol having an average molecular weight of from 100 to 1500 and from 4 to 7%, by weight, of cellulose into a coagulation bath is also disclosed. The present membranes offer certain advantages particularly in plasmaphoresis and microfiltration.
Patent GB-2091855-A (GB)
Title: Chaff rocket
IPC: F42B12/70
Filed: 1981-12-23
Abstract: A rocket for distributing metallized chaff has a chamber 3 containing the chaff, means 8 for ejecting the chaff and means 4 for actively spinning the rocket at high speed during flight so as to distribute the chaff effectively on release. The chaff is preferably contained in individual packets 9 which fly apart when ejected. <IMAGE>
Patent GB-2085287-A (GB)
Title: Barbecue spit
IPC: A47J37/07
Filed: 1981-05-19
Abstract: Gas fired barbecue spit comprising a housing (2) a spit shaft (22) which is rotatable relative to the housing, radiant heating means (32) such as gas burners distributed along the length of the housing but spaced laterally relative to the spit shaft. The spit also has removable covers which, when in position, act to retain heat within the housing and so enable more efficient cooking.