baber/WOPTO huggingface dataset:
Patent GB-1355829-A (GB)
Title: Process for fixing electrophotographic images
IPC: G03G11/00
Filed: 1971-12-29
Abstract: 1355829 Fixing a toner image FUJI PHOTO FILM CO Ltd 29 Dec 1971 [29 Dec 1970] 60558/71 Heading G2H A toner image is fixed by the application of a transparent hydrophobic thermoplastic resin layer carried by a temporary support from which the layer is released by the application of heat, pressure or liquid. The resin layer may be 5-30 microns thick. An intermediate layer situated between the resin layer and the temporary support may be released with the resin layer (forming the top fixing layer) or retained on the temporary layer. The temporary support may be of polyethylene terephthalate, diacetylcellulose, cellulose triacetate, polycarbonate, polypropylene, polyamide, polyethylene, regenerated cellulose, polystyrene, polyvinyl chloride or silicone-coated paper. The resin layer may be of vinyl acetate, alkylacrylate, alkylmethacrylate, styrene, acrylic acid or alkylstyrene homo or copolymer. An adhesive property controlling monomer (acrylic acid, methacrylic acid, diethylaminoethyl methacrylate, or hydroxyalkyl acrylate, or methacrylate) may be present. The intermediate layer may be of polystyrene. The releasing temperature is that sufficient to soften the resin, the releasing pressure may be 10-500 gm/in<SP>2</SP> and the releasing liquid may be residual rinsing or developer liquid.
Patent GB-1292140-A (GB)
Title: Improvements in or relating to polyurethane foam
IPC: C08G18/16
Filed: 1969-12-16
Abstract: 1292140 Boots &c BOSTIK Ltd 16 Dec 1969 [17 Dec 1968] 61363/69 Heading A3B [Also in Division C3] Shoes soles may be moulded using a polyurethane foam formulation (see Division C3) and preferably using equipment as illustrated in Figs. 1 and 2. The soles 10 may be moulded onto shoe uppers using an enclosed moulding chamber 25 defined in part by tread forming mould members 28 and in part by the shoe bottom of a lasted shoe upper 12 supported on a foot form 26. Measured quantities of the polyurethane foam-forming reactants are supplied from chambers 14 and 16 to a high speed mixer 22 and the mixture is discharged through conduit 24 into the moulding chamber 25 where it foams and establishes adhesive engagement with the bottom of the shoe upper.
Patent GB-658698-A (GB)
Abstract: 658,698. Stockings. BURD, S. I. April 13, 1949, No. 10029. [Class 141] A fully-fashioned stocking has a first double 'thickness welt 26, 30 at the upper edge of the leg portion 38, an intermediate portion 22 extending from the base of the first welt to a second upper double thickness welt 12, 16, and openwork run-resisting borders 32, 24, 20 at the junction of the first welt with the leg portion and in the intermediate portion 22. This construction renders the stocking adjustable in length as the upper part may be folded inwardly along the border 24. The back seam 39 preferably extends into the first welt 26, 30, a separate seam 41 being provided in the intermediate portion 22 and second welt 12, 16. This arrangement is stated to prevent the seam 39 from twisting in wear. The first welt may be on the outside of the stocking as shown, or on the inside.
Patent GB-2000825-A (GB)
Title: Well-treating process and aqueous solution for use in said process
IPC: C09K8/72
Filed: 1978-07-03
Abstract: A process for stimulating a hydrocarbon containing underground formation comprising siliceous material, by treating the formation with an aqueous solution in which a mud acid is generated from a fluoride salt and a relatively slowly-reactive acid-yielding material formed by chloro-carboxylate material from which chlorine is relatively easily hydrolyzable.
Patent GB-2008037-A (GB)
Title: Selective printing
IPC: B41J25/308
Filed: 1978-08-07
Abstract: Printer in which the impression devices (head 15, carriage 16) and the paper feed devices (including the striking cylinder 9) are constructed in two juxtaposable blocks. The carriage includes a lower L-shaped part (160) on which an upper part (161) slides transversely, connected to the lower part by two flexible plates (162, 163). An adjustable stop (166) limits the extent of slide. There may be more than one paper path (card holder 6, paths 7, 8). <IMAGE>
Patent GB-2004080-A (GB)
Title: Electrochemical display device
IPC: G02F1/153
Filed: 1978-08-18
Abstract: In a electrochemical display device a layer (12) of ceramic fibrous material impregnated with electrolyte is disposed between a front plate (11), provided with an electochromic layer, and a base counterelectrode plate (16). The layer (12) is held in place by a spacer (13) provided with nozzles (14 and 15) for the supply of electrolyte to the layer (12). The ceramic fibrous material preferably has a refractive index greater than 2, and is made of for example, zirconium oxide. The ceramic fibrous material has a high resistance to the electrolyte. Also, it has a high resistance to the heat treatment used in the manufacture of the device. <IMAGE>
Patent GB-2011828-A (GB)
Title: Acrylonitrile polymer semipermeable membranes
IPC: B01D71/42
Filed: 1978-12-28
Abstract: A method for the preparation of semipermeable membranes comprises sulphonating porous membranes of acrylonitrile polymers containing 40 to 100 mole percent of acrylonitrile. A heterogeneous membrane which can be prepared by such a method comprises an acrylonitrile polymer membrane which has a dense surface layer of less than 1  mu  in thickness and has pores increasing in size gradually away from the said dense surface layer of the membrane and is cross-linked more than 0.1  mu  in thickness from the surface. The semipermeable membranes are useful e.g. for separating substances by reverse osmosis or ultrafiltration.
Patent GB-2038698-A (GB)
Title: Aspherical optical elements
IPC: B29C39/22
Filed: 1978-12-28
Abstract: A method of producing an aspherical optical element comprising a light transmissive glass substrate having an irregular surface finish with a profile which follows in part a desired aspherical profile and a coating of a light transmissive polymeric material thereon. The glass substrate 2 is first prepared with the part aspherical profile 3 for example by casting, machining or grinding and then the substrate is supported in a mould tool in close proximity to an optically polished surface of a negative profile of the desired aspherical profile. The region between the facing surfaces of the glass substrate and mould is filled with the polymeric material 1 and the polymeric material is bonded to the surface of the glass substrate. Thereafter the topical element thus formed is released from the mould tool. The surface of the glass substrate may be produced in the first process stage by mass production methods using automatically controlled machine tools. The surface may have a tolerance defect band width of not less than 400 microns and the polymeric coating material may comprise an epoxy resin of between 100 and 450 microns thickness. <IMAGE>
Patent GB-2040829-A (GB)
Title: Inflatable dinghy
IPC: B63B43/10
Filed: 1979-02-01
Abstract: To improve the buoyancy of an inflatable dinghy and to make it unnecessary for the inflatable structure thereof to be compartmented to avoid complete loss of bouyancy upon being punctured, the dinghy comprises an outer tubular inflatable annulus 10, with a flexible floor 11 and a non inflatable buoyant body 14 secured to the floor 11.The body (14) is buoyant by hollow (as shown) or may be made solidly of a light weight material such as expanded polyvinyl chloride, expanded polyurethane, or cork. If the body 14 is made flat-topped as shown, it can serve as a seat for one or more occupants of the dinghy. <IMAGE>
Patent GB-2043739-A (GB)
Title: Moulded coping stones for swimming pools
IPC: E04H4/14
Filed: 1979-03-10
Abstract: A swimming pool coping element wholly made from concrete in the form of a slab having a non-slip facing formed by a pattern of dimples or small hollows which are provided on the upper face of the slab continuously around a slab nosing. The slab is produced in an open-topped mould having a recessed edge portion integrally formed with its bottom, these mould portions carrying a pattern of raised pimples corresponding to the dimples to be produced on the finished slab. Removable parts 21 and 22 allowing removal of the slab from the mould. <IMAGE>
Patent GB-2046577-A (GB)
Title: Method and apparatus for fumigating
IPC: A61L9/12
Filed: 1979-06-22
Abstract: A preparation of metal phosphore prepacked preferably in crap paper bags is sealed between two layers of a moisture-free, non-hygroscopic, flexible, plastic sheet band, of which at least one layer let moisture pass through. Pockets for the preparation are formed by means of welding beads made at regular intervals transversally to the band. The welding beads arranged between the pockets make up inflexion points. Then, the band (1) containing the bags and having a length comprised between 3 and 10 m. is wound so as to form a cylindrical body (39) which is introduced into an air tight tin box. The box is open only just before making use of the preparation at the location of the gas treatment. The band is unwound onto the surface of, for example, a bulk material to be treated such as wheat and is extended freely. The gasing bottle is kept sealed until the end of the gasing, i.e. during several days. Following a reaction of the preparation with the air moisture, very toxic gases phosphorous hydrogen are formed which, during gasing, diffuse slowly through all the bulk material. A the end of the gasing, the band containing eventually remains of the preparation is removed, wound and evacuated for destruction.
Patent GB-2034449-A (GB)
Title: Improvements in battery-operated lighters
IPC: F23Q2/28
Filed: 1979-10-12
Abstract: A battery-operated lighter comprises a housing 2, a high voltage spark generating element 1, and means including a sensing electrode 3 for automatically cutting off the spark generation on flame ignition and consequent lowering of electrical resistance in the region of the flame 4. To lower the resistance still further and ensure more reliable operation, a component 5 of barium oxide or similar low electron work function material, mounted on a thermally insulating support 7, is disposed in the region of the flame 4. Alternatively, Fig. 2 (not shown), the component 5 can form the periphery of the flame hole. <IMAGE>
Patent GB-2042981-A (GB)
Title: Electrochromic Imaging Method
IPC: B41M5/20
Filed: 1979-12-21
Abstract: In an imaging method, a solution in methanol of a bicyclic compound having two nitrogen containing aromatic rings, such as N,N' di(p- cyanophenyl)-4,4' bipyridylium dichloride, is subjected to electric currents in image configuration at a potential above a threshold potential to produce a black coloration (reduced material), rather than the green colour provided by an aqueous solution under the same conditions. As shown, a latent image, is written on conductive surface 1 using methanolic solution 4 of stylus array 6, is electrically developed using a similar solution 9 and is transferred to a paper web 14. Larger currents through the array 6 may obviate the development step. Also disclosed is the production of a green colouration from aqueous solution followed by electrical treatment in contact with pure methanol to produce the black colouration. <IMAGE>
Patent GB-2048650-A (GB)
Title: One-piece watch strap
IPC: A44C5/14
Filed: 1980-02-18
Abstract: A one-piece watch strap adapted to be threaded through the attachment bar loops on opposite sides of a watch case 2 includes a pair of spaced slots 12 in and extending transversely across the rear strap surface to receive and positively locate the transverse attachment bars 3, 4 of the watch and a contoured watch case recess 14 in the top strap surface. <IMAGE>
Patent GB-2073503-A (GB)
Title: A contact spring for an electrical connector
IPC: H01R13/658
Filed: 1980-03-27
Abstract: An electrical connector consisting of two complementary members comprises a member 1 having a contact spring 11 in the form of a band which is located in a recess (13, figure 1, not shown) and may be secured by means of releasable interengaged elements (17, 19) formed at respective ends of the band. The contact spring 11 is formed with contact members 25 extending radially outwardly therefrom, when secured in the recess, so as to contact an inner surface of the other member of the connector. <IMAGE>
Patent GB-2047140-A (GB)
Title: Conveying system in die-casting plant
IPC: B22D33/00
Filed: 1980-04-09
Abstract: In production of die-castings, particularly low pressure or gravity die- castings, moulding cores are assembled on a travelling pallet at a loading station (7A) on an input conveyor (5). The loaded pallet is then moved to a feed station (7B) from which it is transferred into a die assembly (1) as a further pallet and casting is removed therefrom and deposited at a removal station (7C) on an output conveyor (6). The die assembly then closes and molten metal is supplied thereto. While the casting in the die assembly is cooling, the pallet at the removal station (7C) is moved to an eject station (7D) where the casting and cores are separated, the pallet is cleaned and returned to the input conveyor (5) by an overhead crane (9) ready for re-loading and returning to the feed station (7A). The number of pallets used will depend on the cooling time of the casting but three is the preferred number. A suitable pallet is described. <IMAGE>
Patent GB-2052826-A (GB)
Title: Teaching kit
IPC: G09B1/06
Filed: 1980-04-21
Abstract: A kit for teaching infants or other children particularly for teaching languages comprises a base sheet 1 covered with a plastics film or material 3 and a plurality of outline elements or images 2 depicting houses, animals or other objects, e.g. geometrical Figs. The outline elements or images are of e.g. felt, with a contact adhesive on the surface of the outline elements or images facing the base sheet which is protected by a release paper 2a which is removed before use. The outline elements or images are removable and replaceable in new positions to pictorially illustrate the use of words without the addition of further adhesive. <IMAGE>
Patent GB-2055472-A (GB)
Title: Methods and apparatus for monitoring the condition of dielectric liquid in electric discharge machining
IPC: G01R27/26
Filed: 1980-06-12
Abstract: A continuous sample of dielectric liquid is withdrawn from a tank containing the EDM electrode and workpiece and is passed between electrodes (10, 11 and 12) of a capacitance cell before being returned to the tank. The capacitance between the electrodes gives an indication of the amount of metal particles resulting from EDM in the dielectric liquid. In another arrangement a magnetic field is used to direct most ferrous particles through a capacitance cell or part of a capacitance cell while most non- ferrous particles pass through another cell or another part of the cell. Measurement of the capacities of the cells or parts of cells provides an indication of the relative amounts of ferrous and non-ferrous particles in the dielectric liquid. The relative concentrations of particles of different sizes can be measured by passing the sample dielectric through a number of cells with each cell having a different pore-size filter at its inlet. The capacitance of each cell then indicates the amount of particles within a predetermined range in the dielectric liquid. In Fig. 6 a pair of electrodes 43, 44 may be immersed in the EDM tank 45 and a voltage supplied thereto which is just below the breakdown voltage of pure dielectric liquid. When in use the strength of the liquid falls discharges between the electrodes are detected 52 and supply to EDM electrode 47 is changed. <IMAGE>
Patent GB-2080050-A (GB)
Title: Reduction of electrical power consumption
IPC: H02M5/25
Filed: 1980-07-02
Abstract: An electric power consumption reduction circuit receives power from an AC electricity supply and provides power output to an electrical appliance via switch 14 and semiconductors 12, 13. The circuit is cyclically controlled to reduce power by periodically terminating the supply of power to the output. The control may provide reduced power by allowing only one half cycle from an output via diode 12 and/or by allowing only a predetermined number of whole AC cycles in a given period to be passed to the output via thyristor 13 dependent on the period determined by pulse generating timer 10 and the position selected for switch contacts 14. Diode 12 and thyristor 13 may be replaced by a triac. <IMAGE>
Patent GB-2053794-A (GB)
Title: Method and apparatus for heat sealing or welding surfaces
IPC: B29C65/02
Filed: 1980-07-17
Abstract: In a method for the heat-sealing or welding of a surface consisting of an olefinic polymer to a surface consisting of a polar synthetic or cellulose material, the surface consisting of the olefinic polymer is firstly subjected to a corona treatment and the surfaces are subsequently joined under heat and pressure. Apparatus for closing containers or bags having surfaces of the aforedescribed materials, comprises conveying means for the containers or bags, sealing jaws for effecting the heat-sealing, and a corona for treating at least one of the sealing surfaces located upstream of the sealing jaws. The jaws may be heatable or may heat seal ultrasonically. Specified olefinic polymers are polyethylene, polypropylene and copolymers of ethylene or propylene with vinyl acetate or acrylic acid ester. The polar surface may consist of a polymer based on vinyl acetate or vinyl chloride, polyester, e.g. polybutylene terephthalate, or paper or cardboard with or without laquer or a pigment coating.
Patent GB-2082342-A (GB)
Title: Optical fibre connector manufacture
IPC: G01B11/27
Filed: 1980-08-14
Abstract: Optical fibre connectors often use beam expanders at the ends of the fibres to be coupled since this gives a larger cross-section light beam to be conveyed from one fibre end to the other. Hence losses in the connector are minimised. To adjust the alignment of the fibre end (1) with respect to its lens expander (2), a light beam therefrom passes to a quadrant photo-cell (4). The latter's output indicates any imbalance in the light falling on the photo-cell (4), and this imbalance, via a control circuit (5) control motorised slides (6) which adjust the fibre to bring it into alignment with the lens (2). The light which reaches the quadrant photo-cell (4) does so via a beam splitter (3). Some of the light reaching the beam splitter (3) passes through it to a Fresnel bi-prism (7) with a close-up lens (8) over half its face, from which that light passes on to a TV camera (9). This gives two images which are observed and the results of this observation are used to adjust the angular orientation of the fibre end (1). <IMAGE>
Patent GB-2057242-A (GB)
Title: Coupling flexible elements, e.g. teats, to supply pipes
IPC: A01K9/00
Filed: 1980-08-28
Abstract: An arrangement for preventing undesired disengagement of a tubular flexible element such as a teat (1) from an outlet pipe (8) includes a flanged sleeve (22) which enters the mouth of the element or teat (1). The element or teat is held in place by a retaining nut (11). The arrangement can also include an extension flange ring (24) which provides extended area contact of the flange 7 of the unit (1) with the wall (3). <IMAGE>
Patent GB-2061057-A (GB)
Title: Apparatus for use in scanning a cinematograph film
IPC: H04N3/38
Filed: 1980-10-07
Abstract: Where a cinematograph film is to be raster scanned frame by frame while the film is being moved in a continuous manner to produce a television video signal, apparatus is provided which processes signals representative of the direction of film movement, rate of film movement, position of each film frame in a film gate, times for television fields to begin, and rate of vertical deflection in a raster suitable for scanning a stationary film frame, to produce a composite output signal suitable for effecting the vertical deflection and positioning of each raster. The processing is effected by using an up/down position counter 52 in which the number represents the current position of a reference point in the film frame which is entering a scanning region defined by the film gate, and a composite signal counter 56 in which the counting is started at the beginning of each television field from the loading of the current number in the position counter 52, and is effected from this number by clock pulses, some of which are representative of the rate of vertical deflection in a raster suitable for scanning a stationary film frame, and others representative of the rate of movement of the film. The direction of counting of the pulses representing the stationary frame raster rate is predetermined in accordance with the orientation of the film frame pictures relative to the apparatus. The direction of counting of the pulses representing the film rate is determined in dependence upon the direction of movement of the film, and consequently will normally be opposite to that for the pulses representing the stationary frame raster rate when the film is moving forward, and vice versa. The number in the composite counter 56 is converted into an analog signal which is supplied to vertical deflection circuitry determining the vertical deflection of the beam of the cathode ray tube producing the scanning raster. <IMAGE>
Patent GB-2087317-A (GB)
Title: Angler's trolley
IPC: A01K97/22
Filed: 1980-10-21
Abstract: The trolley has two frame members (20, 21) pivotally attached to each other. One frame member (21) is adapted to form a seat or support for a tackle carrier and is provided with a downwardly extending group support (23). The vertical frame member (20) carries the wheels (13) and may be provided with a back rest (17). The trolley can be folded by moving frame member 21 in the direction of the arrow R. <IMAGE>
Patent GB-2064194-A (GB)
Title: A matrix type liquid crystal display device
IPC: G02F1/1362
Filed: 1979-02-07
Abstract: A matrix type liquid crystal display includes an array of transistors on one substrate controlling individual picture elements, orthogonal source lines and gate lines for controlling the transistors, and a plurality of common electrodes on the opposite substrate, each of the common electrodes being associated with elements along a respective gate line. In use, the transistors apply voltages (line (d)) to selected picture elements in e.g. odd frames, and in the even frames voltages (line (f)) of the same polarity are applied to the common electrodes to cause successive reversals of the effective voltage (line (g)) across the selected picture elements. For voltages to non-selected elements, odd and even are interchanged (line (e)), providing zero p.d. (line (h)). Modulation of all voltages (lines (i), (j)) allows half-tone display. <IMAGE>
Patent GB-2069733-A (GB)
Title: Conditional instruction execution in a pipelined processor
IPC: G06F9/38
Filed: 1981-02-11
Abstract: A pipelined digital processor includes control circuits which during a first processor cycle decode a single conditional instruction for controlling performance of a specific condition test during the next (second) processor cycle and decode another instruction word during the second processor cycle for controlling all processing section operations during the subsequent (third) processor cycle. A circuit performs the condition test by comparing conditions existing in the digital processor during the second processor cycle with the specific condition information included in the conditional instruction for selectively disabling control of at least one section of the digital processor during the third processor cycle depending on the result of the condition test. As described the processor is a multiplier using Booth's algorithm. The pipelined sections include a multiplier forming succcessive partial products, an accumulator accumulating those products, and a rounding circuit to round the accumulated product.