baber/WOPTO huggingface dataset:
Patent GB-2025714-A (GB)
Title: High-power DC to DC converter
IPC: H02M3/335
Filed: 1979-07-02
Abstract: To provide high-power low- voltage DC supplies, from AC mains, the mains are rectified (60) and drive a transistorized DC to DC converter comprising a plurality of DC to AC inverters 63, 64, with their outputs connected in series to feed a common rectifying and smoothing stage 61. The inverters produce a frequency much higher than mains frequency to reduce the size of their power transformers T1, T2. The power transformers may each have two secondaries which are mutually connected in series or in parallel as is necessary to provide the required value of output from the converter. <IMAGE>
Patent GB-2055519-A (GB)
Title: Digital Frequency Synthesiser
IPC: H03L7/23
Filed: 1979-07-17
Abstract: An indirect digital frequency synthesiser has an offset frequency synthesiser with a programmable frequency divider 11, which is repeatedly stepped through a predetermined sequence of division factors. The output of the offset synthesiser is fed to two sample and hold circuits 31, 35. One of the sample and hold circuits, 31, is operated after each step in the division sequence, and its output is fed via a fixed frequency divider, 33, to provide, as the offset frequency, the output frequency at the preceding step in the sequence divided by ten. The other sample and hold circuit, 35, is operated at the end of each sequence to hold the output of the offset frequency synthesiser until the end of the next sequence. <IMAGE>
Patent GB-2026902-A (GB)
Title: Support assembly
IPC: B32B7/04
Filed: 1979-07-20
Abstract: In a system for attaching articles (7; 23; 37; 39; 57; 65) to a support surface (1; 11; 27; 61; 71), an adhesive layer (3; 43; 53; 63; 79) of a thickness of at least 0.35 mm is applied to the supporting member (1; 11; 27; 61; 71) or the article (39). The invention also relates to a method of releasing an adhesive layer from a support surface in a system of this kind, in which a fluid is forced between the surface and the adhesive layer adhering thereto. The support surface may be a table-top, shelf, tray, emergency windscreen, display device or pallet. <IMAGE>
Patent GB-2055693-A (GB)
Title: Printing press
IPC: B41F1/02
Filed: 1979-08-06
Abstract: A printing press comprises a pair of nip rollers (1,2) and a bed plate (3) arranged between the nip rollers, the bed plate having a longitudinal stiffener (6) extending the length of the bed plate at each side thereof, and upper and lower guide means for each stiffener (6) both upstream and downstream of the nip rollers. The bed plate (3) carries parking an image plate and a sheet of paper to be printed the guide means are preferably rollers (7). The provision of the longitudinal stiffeners (6) allows the main section of the bed plate to be formed of a relatively thin material, e.g. a stainless steel member (4). <IMAGE>
Patent GB-2038434-A (GB)
Title: Flange Type Duct Joint Assemblies to Connect the End Portions of Generally Rectangular Ducts
IPC: F16L23/14
Filed: 1979-08-10
Abstract: A joint assembly for connecting the ends of a pair of generally rectangular sheet metal ducts (10) includes a pair of frames (26) secured to each other and connected to the respective duct ends. The frames (26) each include four flange portions (28, 30,32,34), each flange portion having an upstanding channel shaped leg portion (36) and an angularly extending duct receiving leg portion (44). A corner piece (66) connects adjacent flange portions and extends into channel portions of the upstanding leg portions (36) to form the generally rectangular frame (26). The end portions of the ducts (10) are inserted into longitudinal openings of the duct receiving leg portions (44). A flowing type gasket material (64) is positioned longitudinally in the flanges in a longitudinal pocket (62) formed between an inturned rebent portion and the upper horizontal surface of the bottom wall of the duct receiving leg portion (44). The end of each duct wall partially displaces the gasket material (64) so that the gasket material extrudes outwardly around the upper and lower surfaces of the duct wall and between the ends of the flange portion and the corner piece (62). The surface of the corner piece flange portion is displaced from the front vertical wall of the upstanding channel shaped leg portion (36) so that the edge of the duct extends beyond the flange portion and penetrates an outside gasket (106) positioned on the upstanding channel shaped leg portion and the corner piece (62). This provides an effective seal to prevent air within the duct (10) from flowing around the end of the duct and between the outer surface of the duct and the surface of the flange portion of the corner piece. <IMAGE>
Patent GB-2057545-A (GB)
Title: Portable steps
IPC: E06C1/397
Filed: 1979-09-07
Abstract: A portable step ladder mounted on wheels or casters (17) includes a movable brake or anchorage (23) to hold it static on the floor and operated by lever (22), and a movable guard (25) also operated by lever (22) to block access to the step at the bottom end, unless the brake is engaged. When the brake is engaged the wheels are lifted clear of the ground. <IMAGE>
Patent GB-2061842-A (GB)
Title: A protective device for a cyclist's foot
IPC: B62M3/08
Filed: 1979-10-09
Abstract: A protective sleeve 5, e.g. of rubber or plastics, to enclose the front part of a cyclist's shoe 4 when on a pedal 1, has a tongue 8 which extends to the opening of the shoe 4 and is provided with a lip 9 to prevent water flowing onto the shoe 4. The sleeve 5 has a portion 6 which covers the lower surface of the pedal 1, and is fixed to the pedal 1 by openings in the portion 6 through which the strap 3 of the pedal toe-clip passes and/or by a lug on its inner surface which tucks under a part of the toe clip. Perforations, preferably on the undersurface of the sleeve 5, may be provided to ventilate the cyclist's foot in use. <IMAGE>
Patent GB-2039004-A (GB)
Title: Pressure responsive valve assembly
IPC: F16K15/16
Filed: 1979-12-18
Abstract: A pressure responsive discharge valve assembly for use in reciprocating gas compressors, includes a discharge passage valve seat (18) of frusto conical shape in which a generally complementary shaped lightweight valve member (30), preferably formed from a polymeric material, is disposed. The included angles of the valve and seat are slightly different to provide progressive closing and sealing without permanent deformation. The materials used and the relative geometry of the valve seat and member are such as to reduce clearance or reexpansion volume, provide quiet closure with good sealing; long life and high speed operation, and still have the required flow areas at low valve lifts. <IMAGE>
Patent GB-2067912-A (GB)
Title: Catalysts for removal of ozone from the atmosphere
IPC: B01D53/86
Filed: 1980-01-21
Abstract: Ozone, which is present in the atmosphere and may be an irritating factor, may be removed from air by utilizing a filter material comprising a combination of at least one catalytic metal or metal oxide, preferably selected from Group VIII of the Periodic Table, and a carbonaceous pyropolymer with a solid support such as an alumina.
Patent GB-2047441-A (GB)
Title: Electronic timepiece
IPC: G04C21/20
Filed: 1980-01-24
Abstract: An electronic timepiece has an optical display device for displaying time in digits and an alarm time indicator for setting an alarm time in terms of the position of a pointer. The position of the pointer is electronically detected and is applied as alarm time data to a time counting circuit. When current time is coincident with the alarm time set by the pointer, the alarm is given.
Patent GB-2046130-A (GB)
Title: Container for Dispensing Particulate Material
IPC: B65D83/06
Filed: 1980-02-15
Abstract: A container for dispensing particulate material by inverting and shaking has a dispensing aperture (3) through which extends a rod (9) of smaller diameter than that of the aperture. The rod has portions (7, 8) disposed externally and internally with respect to the aperture (3) both portions being of greater diameter than the aperture, so that, in a non- inverted position of the container, the outer portion (7) of the rod (9) blocks the aperture (3) and, in an inverted position of the container, the inner portion (8) causes the rod to oscillate when the container is shaken to scatter the contents from the container through the aperture. The container may be made at least partly of a transparent, synthetic resin. <IMAGE>
Patent GB-2045254-A (GB)
Title: A plasmid and its microbiological preparation
IPC: C07H21/04
Filed: 1980-03-03
Abstract: The plasmid pUC 9 can be obtained from the microorganism Streptomyces fradiae, NRRL 11446. The plasmid can be used as a cloning vehicle in recombinant DNA work. By way of example, the insulin gene can be inserted into the plasmid and then a suitable host containing the resulting plasmid can be used to produce insulin.
Patent GB-2077225-A (GB)
Title: Cassettes for light sensitive webs
IPC: G03B27/58
Filed: 1980-06-04
Abstract: A cassette for delivering or receiving light sensitive film or web which eliminates the requirement for any means to pull film into the cassette. Film is delivered through a light trap feed slot 34 in the casing 32 and is fed between plates 14 and 15 tangentially onto a rotatable drum 19, a plurality of resiliently mounted guides 41 positioned circumferentially around the drum 19 allowing the film to be wound evenly upon itself on the drum. The guides 41 may be strips carried by rollers 22 which are themselves resiliently urged towards the drum surface, or pulleys carried by rods spaced from the drum may urge the film towards the drum surface. <IMAGE>
Patent GB-2057416-A (GB)
Title: Method of, and apparatus for, treating polluted water
IPC: C02F3/06
Filed: 1980-07-29
Abstract: Apparatus for treating polluted water from, for example a fish pond, comprises a tank 1 divided into three chambers 3, 4 and 5 by means of two vertically-spaced grids 6 and 7. The central chamber 4 is filled with a particulate, porous filtering medium 13. The upper chamber 3 contains a water inlet pipe 8 and a water outlet pipe 9. The water inlet pipe 8 is positioned above the water outlet pipe 9, and is provided with a plurality of holes 11, through which water to be treated is sprayed into the upper chamber 3. Return pipes 15 are provided for returning treated water from the region of the lower grid 7 to the water outlet pipe 9. The filtering medium 18 converts organic impurities into gases and harmless soluble products, and mud and silt collects in the lower chamber 5. <IMAGE>
Patent GB-2060387-A (GB)
Title: Insecticidal synergistic mixtures of o,o-diethyl o(3 5,6-trichloro-2-pyridinyl)phosphorothioate and 3-phenoxybenzyl(+)-cis-trans-2,2-dimethyl-3-(2,2-dichlorovinyl)cyclopropane carboxylate
IPC: A01N57/16
Filed: 1980-09-26
Abstract: Insecticidal compositions containing a mixture of O,O-diethylO- (3,4,5-trichloro-2-pyridinyl) phosphorothioate and 3- phenoxybenzyl(+/-)-cis-trans-2,2- dimethyl-3-(2,2-dichlorovinyl) cyclopropane carboxylate are disclosed. Such active agents and other pesticides may be included in the compositions. Such compositions are useful in the killing and control of insects, particularly insects of the Lepidoptera order and especially of the genus Heliothis.
Patent GB-2063279-A (GB)
Title: New Thermoplastic Elastomers Based on Aliphatic Copolyetheresteramide Blocks of High Molecular Weight
IPC: C08G69/44
Filed: 1980-10-01
Abstract: Elastomers based on aliphatic polyetheresteramide blocks, having good elasticity properties and resistance to shock at low temperatures resulting from a regular alternation of linear aliphatic polyamide blocks of M.W. 500 to 3000 and polyoxyalkylene blocks of M.W. 500 to 5000 interconnected by ester groups and of which the weight ratio of the polyether to polyamide blocks is from 45/55 to 85/15.
Patent GB-2059136-A (GB)
Title: A method of aligning an indexing pin of a record player
IPC: G11B17/025
Filed: 1978-10-12
Abstract: A record bearing card 100 having a record 102 thereon has centering element 104 to be engaged with an indexing pin P in a record player. Initially the indexing pin P is moved out of the path of movement of said record bearing card 100 which is so placed that the surface of the record 102 faces the record player. The card is pressed against biasing means 30. The indexing pin is moved into engagement with the centering element 104 and the card 100 is released whereby the biasing means 30 causes the centering element 104 to engage the indexing pin P which prevents further movement of the card 100. <IMAGE>
Patent GB-2064085-A (GB)
Title: Cooling device for the supercharging air of an internal combustion engine
IPC: F02B29/04
Filed: 1980-11-14
Abstract: A heat exchanger 11 for the cooling of compressed supercharged air of an I.C. engine comprises a regenerative matrix rotor 56 rotatably mounted in a chamber (formed e.g. of two half-shells 18, 19) having therein opposed surfaces in which are formed two pairs of apertures (viz 30,31 and 32, 33) respectively conveying cooling air and compressed air to and from the matrix for heat exchange therein, sealing means being provided between the rotor and said surfaces. The sealing means may comprise pads 62 pressed against the rotor end faces by resilient gaskets 65 (e.g. of rubber tubing) which may be open ended or filled with compressed air. The rotor may be rotated by an electric or hydraulic motor or by a turbine driven by the engine exhaust. In a unit (e.g. Figs. 1 & 2) comprising an I.C. engine (1) and a compressor-turbine unit (4-7) operated by the engine exhaust gas in order to feed compressed air to the intake manifold (2) of the engine, the compressed air leaving the compressor (4) is cooled by said air- to-air heat exchanger (11). <IMAGE>
Patent GB-2088325-A (GB)
Title: Elevating working platforms
IPC: B66F3/22
Filed: 1980-11-26
Abstract: In lifting apparatus comprising a base (1), a platform (5), and a pantographic lifting mechanism (4) disposed between the base and the platform, the lifting mechanism, which comprises superimposed X-link units, is operated by lever arms (18, 19) rotatably mounted intermediate the central and end pivot points of a link arm 7, and rotated by means (29) provided on the link arm. The free end of each lever arm (18, 19) slides along an adjacent link arm, whereby the rotation of the lever arm expands the lifting mechanism. <IMAGE>
Patent GB-2070622-A (GB)
Title: Silica and fibrous polyolefin thickening agent
IPC: C08L33/00
Filed: 1981-02-18
Abstract: A thickening agent for organic liquids such as styrene-polyester resin liquids used in iaminating or gel coating applications comprises a mixture of a finely divided silica and a finely divided fibrous polyolefin.
Patent GB-2082138-A (GB)
Title: Band inserting mechanism in a banding machine
IPC: B65B13/18
Filed: 1981-03-20
Abstract: A pair of grooved rollers (17,23), one roller (17) being driven, feed a band (B) between biased band guides (not shown) so as to insert the free end of the band into a band melt-bonding station. The undriven roller (23) is biased by a spring (27) towards the driven roller (17) and is restrained by a stop (28), which can be adjustable to accommodate various widths of band (B). During tensioning, the band (B) pushes the undriven roller (23) away from the driven roller and is thereby released. <IMAGE>
Patent GB-2095370-A (GB)
Title: Gas main shut-off valve
IPC: F16K3/316
Filed: 1981-03-25
Abstract: The valve is intended for closing off a gas main for an operation in which a rod and a winch cable are passed through an old main for pulling a new main through the old main. it is required to shut off the gas near an end of the old main at times whilst the cable or rod is extending through the main. The valve has a closure member 20 provided with a main aperture 24. The member is slidable to move the aperture 24 in and out of registry with a passage 14 through the valve. The member has an additional small diameter aperture 26 for receiving the cable or rod. The member comprises a pair of resilient outer elements, between which is sandwiched a rigid element. Between the small aperture 26 and the main aperture 24, there is a slot 30 in the rigid element for passage of the cable or rod and slits in the resilient elements which reclose after passage of the cable or rod. <IMAGE>
Patent GB-2096779-A (GB)
Title: Photographic enlarger
IPC: G03B27/54
Filed: 1981-04-15
Abstract: Slightly diverging light beams of different wavelengths are mixed by means of a transparent member 6 having an upper surface of serrated cross-section and a lower convex, concave or fresnel lens surface. The mixed light passes through a transparency 8 to an objective 9 either directly from member 6 (as shown) or after passing through a light converging member (12, Fig. 4). The angle between the axis of the light beam and the axis of the objective lens is preferably 60 DEG  and the angle between each serrated surface and the axis of the objective lens is preferably 30 DEG . <IMAGE>
Patent GB-2077572-A (GB)
Title: Filter attachment machine
IPC: A24C5/47
Filed: 1981-06-11
Abstract: In a filter attachment machine which initially forms double filter cigarette assemblies requiring to be cut in half to produce individual filter cigarettes, there is a drying drum (24) formed with an odd number of flutes of which alternate flutes are arranged to receive the double assemblies (29); a further fluted drum (28) which is arranged to receive rods (cut double assemblies) from alternate flutes of the drying drum after the rods have passed the further drum once without being transferred to the further drum; and a cutting device (30) arranged to cut the double assemblies after they have passed the further drum and are still being carried by the drying drum. <IMAGE>
Patent GB-2105294-A (GB)
Title: Extensible and retractable gantry for mounting in a vehicle
Inventor: PRATT JONATHAN JAMES
IPC: B60P1/54
Filed: 1981-06-13
Abstract: An extensible and retractable gantry can be mounted in or on a vehicle. The gantry comprises two frames (12, 13, 14) each mounted one behind another in the vehicle. Bracing beams (17) tie the two frames to one another. One of the frames stands adjacent the load- receiving entrance to the vehicle body. A beam (18) can travel along the top members (11) of the two frames within the vehicle body. The beam (18) supports a further beam (21) which is extensible and retractable out of and back into the vehicle body. When extended, the beam (21) projects out of the back of the vehicle, and a hoist (26) can travel towards the projecting end of the beam (21) to pick up a load initially standing on the ground adjacent the back of the vehicle and transfer it into the vehicle. The projecting end (28) of the beam (21) may be supported by a prop (28a) whilst the hoist (26) is being operated. When not in use, and with the beam (21) fully retracted, the travelling unit (18, 21) can be locked in a position adjacent one or other of the vehicle body sides and so interferes minimally with the loading area inside the vehicle body. <IMAGE>
Patent GB-2085675-A (GB)
Title: An electrically conductive plug pin
IPC: H01R4/34
Filed: 1981-10-09
Abstract: A pin (1) for a re-wirable plug, formed from a folded sheet preform, has an integral apertured lug (3) in which a conductor is held by a clamping screw screwed into either the aperture or into a separate nut. The lug may have upstanding side walls to prevent rotation of a nut. <IMAGE>
Patent GB-2089375-A (GB)
Title: Autogenous oxygen smelting of sulphide materials containing base metals
IPC: C22B5/14
Filed: 1981-10-30
Abstract: A base metal sulphide concentrate, especially of nickel or copper, is mixed with roasted concentrate and the mixture is autogenously smelted, e.g. by flash smelting, with oxygen-containing gas and a flux for iron oxides, e.g. silica, to give a matte, a siliceous slag and a strong sulphur dioxide off-gas. The addition of the roasted concentrate facilitates control and improvement of the matte grade.
Patent GB-2090474-A (GB)
Title: Radio antennae
IPC: H01Q9/04
Filed: 1981-12-11
Abstract: The present invention provides a radio antenna for use, for example, in aircraft for the reception of radio signals from navigation satellites. The radio antenna comprises a microstrip disc resonator having upper and lower spaced conductor discs (18, 28), feed connection means (19, 20) connected to the upper disc (18), and support means (26) for supporting the disc resonator above a ground plane (27), which may comprise the metal skin of an aircraft, such that the discs are parallel to the ground plane and the lower disc is spaced at a distance d, between 0.25 lambda  and 0.1 lambda , but preferably 0.16 lambda  from the ground plane; this gives the optimum gain at low elevations. <IMAGE>
Patent GB-2113486-A (GB)
Title: Static inverter
Inventor: YATES BARRY
IPC: H02M7/48
Filed: 1982-01-13
Abstract: The inverter converts a D.C. supply to an A.C. supply and is particularly adapted for use to act as a standby electrical A.C. supply in the case of interruption of mains A.C. supply. The A.C. supply is generated by the inverter to have a square wave form with the desired peak voltage and frequency. The relationship between peak voltage (VpK) and the RMS voltage Vrms is Vpk =  2ROOT 2Vrms. The inverter includes two inverter means 17, 18 each generating a square wave form A.C. output which are superimposed on one another additively. The length of three consecutive cycles of the wave form of one inverter means is the same as the length of one cycle of the other wave form. The peak voltage of one inverter means is added to the peak voltage of the other inverter means to provide the peak voltage of the resultant A.C. supply. <IMAGE>
Patent GB-2114359-A (GB)
Title: Refuelling arrangements for nuclear reactors
Inventor: BOLEY WILLIAM EDWARD
IPC: G21C3/12
Filed: 1982-02-05
Abstract: A fuel stringer for a gas cooled nuclear reactor and comprising a chain of clusters of fuel elements within graphite sleeves wherein the sleeves are externally roughened or grooved to reduce vibration problems during refuelling of the reactor.
Patent GB-2094960-A (GB)
Title: Electrical resistance furnaces
IPC: F27D11/02
Filed: 1982-03-18
Abstract: An electrical resistance furnace includes a number of electrical resistance heating elements (11) arranged around the sides and surrounding a space (12) containing a crucible (13) or similar container to be heated. The elements (11) are supported at least at their ends by fire- brick material 19 and are surrounded by heat insulation (21, 22, 23, 33). Both ends of each resistance element (11) extend through apertures in the fire-brick material (19) so that by removing part of the heat insulation (23, 33) access may be gained to both ends of the element (11) from the exterior of the furnace to permit removal and repair or replacement. <IMAGE>
Patent GB-2097858-A (GB)
Title: A fuel injector for an internal combustion engine
IPC: F02M63/02
Filed: 1982-05-05
Abstract: A fuel injector includes a hydraulically controlled injector valve 7 controlling flow of fuel from a gallery 20 via passages 12''', 12'', 12' to the injector valve which are connected through a safety valve 19 controlled by an electromagnetic changeover valve 41. The valve 41, when operated, applies gallery pressure to a piston 44 to overcome the load of a spring 45 which keeps the safety valve normally open. The valve 19 may be closed in response to an excessive drop in pressure in the gallery 20, as detected by an electrical resistance strain gauge 48, corresponding to jamming of the valve 7 or response to excessive engine speed. The output of the pump 22 supplying the gallery may be reduced in response to a gallery pressure, as detected by the gauge 48, exceeding a value set at a controller 30 which regulates operation of the valve 7. <IMAGE>