baber/WOPTO huggingface dataset:
Patent GB-2073203-A (GB)
Title: Method of producing a polypeptide product and a plasmidic expression vehicle therefor,a method of creating an expression plasmid,a method of cleaving double stranded dna and specific plasmids
IPC: C12Q1/68
Filed: 1981-03-23
Abstract: Plasmidic expression vehicles and methods of using them in the production of useful polypeptides by recombinant bacteria are described. The plasmids employ a bacterial tryptophan promoter-operator system from which the attenuator region ordinarily present has been deleted. Bacteria containing the plasmids can accordingly be repressed by the addition of tryptophan against expression of desired polypeptides coded for by inserted genes while they are grown to levels suitable for industrial-scale production. Additive tryptophan may then be withdrawn, essentially derepressing the pathway and permitting efficient production of the desired product in high yield.
Patent GB-2074830-A (GB)
Title: Microwave oven
IPC: H05B6/72
Filed: 1979-03-16
Abstract: A microwave oven has a rotating microwave radiator which, to improve energy absorption in the cooking load, radiates horizontally polarized waves upwardly from two of three apertures 32 spaced different distances from the axis of rotation (centre conductor 22 of a coaxial line) and vertically polarized waves across the bottom of the oven from a vertical aperture provided by a lip 56 over the third aperture 32. The radiator may be positioned beneath a microwave-transparent protective cover 34. <IMAGE>
Patent GB-2106810-A (GB)
Title: Compensating for longitudinal creep of rotating cylindrical workpieces
Inventor: BODE ERIC
IPC: B23Q1/76
Filed: 1981-09-16
Abstract: A rotator for holding a cylindrical work-piece 12 for welding, includes sets of wheels 14, 16, 18, 20 for supporting the work-piece for rotation about its axis, one of said sets 20 being mounted on a support 30 which is pivotable about an axis transverse to the said axis of the work-piece to cause longitudinal movement of the work-piece. A stylus 22 is biassed against a datum line provided on the workpiece and longitudinal creep of the work-piece sensed by the stylus is transmitted to electronic control means which operate motor 44 and gearing 42, 40, 38 to pivot support 30 about shaft 32 so that the creep is compensated for. <IMAGE>
Patent GB-2084275-A (GB)
Title: Dual-circuit brake systems
IPC: B60T8/94
Filed: 1981-09-17
Abstract: A dual-circuit brake system comprises a booster (1) which has two brake valves (5, 6) which are controlled by the pressure of a dual- circuit tandem master cylinder (2). A pedal travel increasing device (12/13) is disposed in the dual-circuit master cylinder (2) in order to give the brake pedal more travel upon commencement of braking and to improve the driver's braking feel. The single device (12/13) is used for the two brake circuits, (I, II), whereby the mode of operation is rendered more reliable. The device (12/13) can be rendered inoperative upon failure of the pressure medium generator (26, 27). Combination into a single structural unit with other valves such as a safety change-overvalves (14, 15), or with anti-skid solenoid valves (16, 17, 18, 19, 20, 21) and with the pressure medium generator (26, 27) is possible. <IMAGE>
Patent GB-2087257-A (GB)
Title: Method and arrangement for continuous leaching of solid material
IPC: C22B21/00
Filed: 1981-09-28
Abstract: Soluble components in solid material are dissolved continuously in a column comprising one or more stages where the stages are separated by means of perforated plates (2). Solid material and liquid can pass each other countercurrently or cocurrently. The solid material is supplied continuously or periodically to the top of the column at (3) and sinks downwards in the column either by settling through the holes in the plate (or plates) or by hydraulic movement of the current of liquid. The solid material can after the leaching be subjected to a washing process in the lower part of the column or in a separate washing equipment. The ready leached solid material is discharged continuously or batchwise from the bottom of the column, possibly through a separate washing unit. Both the charging and discharging of the solid material can be governed by computer. The leach liquid is pumped into the column from the bottom for countercurrent leaching and from the top for cocurrent leaching. The leach liquid moves in both cases through the length of the column and through the solid material reacting with the latter before it is piped off from the top of the column for countercurrent leaching and from the bottom of the column for cocurrent leaching. <IMAGE>
Patent GB-2091745-A (GB)
Title: Copolymers of ethylene
IPC: C08F4/34
Filed: 1982-01-25
Abstract: Terpolymers of ethylene having a melt index of between 1 and 500 dg/mn comprise:  88 to 98.7 mol % of units derived from ethylene, 1 to 10 mol % of units derived from at least one ester selected from the alkyl acrylates and methacylates, said alkyl group having 1 to 6 carbon atoms, and 0.3 to 3 mol % of units derived from maleic anhydride, and having a polydispersity greater than 6. A process of manufacture is also disclosed. The polymers may be used in the production of film.
Patent GB-2116830-A (GB)
Title: Footwear remover
Inventor: HUME KENNETH JOHNSTONE
IPC: A47G25/80
Filed: 1982-03-16
Abstract: A footwear remover comprising a base (6) and a 'Y' grip (5) which is articulated to the base, both being constructed of metal rods. The base rod is provided with eyelets at each end and formed into a 'U' shape with both arms bent by a small angle out of the plane of the 'U'. A cover plate fits around the 'U' portion. When in use the 'Y' grip extends forward and upward of the base with its end resting against an abutment on the base portion. When not in use the 'Y' grip is rotated under the base. <IMAGE>
Patent GB-2120996-A (GB)
Title: Nestable one-piece can body or lid
Inventor: FOULKES PAUL
IPC: B65D43/02
Filed: 1982-05-27
Abstract: A can body (11) has a circular section side wall (12) including a cylindrical portion (16) and a tapered portion (17) which diverges away from a base (13), the cylindrical portion being adjacent a rim (14), whereby two or more such bodies can be nested. A step (18) may separate the two portions so as to limit the extent of nesting. A lid (30) has a similar construction with a cylindrical portion (36), a tapering portion (35) and a step (37). <IMAGE>
Patent GB-2100612-A (GB)
Title: Mixing apparatus
Inventor: DOBLER HERMANN
IPC: B01F15/04
Filed: 1982-06-10
Abstract: Apparatus for mixing a moistening agent for use in a rotary printing machine comprises a storage vessel (1) for etching solution (2), a metering vessel (9) for metering a variable quantity of the etching solution, and a mixing vessel (22), equipped with a liquid level regulator (28, 29), for moistening agent consisting of etching solution and water. A feed line (26) for the water, which includes a control vales (25) and a jet pump (11) downstream thereof, communicates with the mixing vessel. A suction line of the jet pump (11) is connected to the metering vessel (9). The metering vessel (9) has overflow (7), is installed in the storage vessel (1) and is connected by a pressure line (6) with a pump (5) delivering etching solution (2) from the storage vessel. A displacement body (14) is arranged in the metering vessel (9) to be vertically displaceable in the region between an outlet (12) connected to suction line (10) of the pump (11) and an overflow (7) for the etching solution. <IMAGE>
Patent GB-2101877-A (GB)
Title: Utensils for heating liquids
Inventor: HADEN DENIS HOWARD
IPC: A47J27/21
Filed: 1982-06-22
Abstract: An electric kettle having a peripheral wall 27 a handle 12, an immersion heater 13 and control means 14, in which a lower portion 31 of the control means, a head 24 of the immersion and the wall 27 are mechanically connected by fastener means which includes a ring 25, to mount the control means on the wall 27 so that an upper portion 37, 41, 42 and 51 of the control means is upstanding from and is supported by the lower portion to leave a steam space 36 between the upper portion and the wall. The upper portion is wholly offset from the peripheral wall and the handle and is not connected thereto, so that one form of the control means can be used with vessels having various handles and walls of various depths. <IMAGE>
Patent GB-2125531-A (GB)
Title: Solar heating
Inventor: TROVATO SALVATORE
IPC: F24J2/04
Filed: 1982-08-17
Abstract: A solar panel for supplying or extracting heat from a building comprising a double glazed window having a frame supporting two spaced-apart glass panes (enclosing a space housing a set of louvres, each of which is dark on one side and reflective on the other. The louvres are rotatable through 180 DEG  to absorb or reflect the sunlight. Vents (10, 11) are openable to circulate air into or out of the building through the space, as required for heating or ventilation. The panel also includes a heat exchanger coil (13) of a hot water system. The louvres can be raised to the top part of the frame to leave the space clear and one pane is mounted on a hinged sub-frame so that it can be opened for cleaning. Coils (13) for heating water are located in the path of the air flow. <IMAGE>
Patent GB-2105262-A (GB)
Title: A propelling pencil with automatically propelled lead
Inventor: MULLER HUBERT
IPC: B43K21/033
Filed: 1982-09-02
Abstract: The propelling pencil comprises a lead tube (13) mounted for axial movement in the pencil tip (11), and an axially movable clamp unit (14,17) for the lead (12). A locking device (19) is provided to allow advance of the lead towards the pencil tip but to prevent the backward movement thereof. When the lead has been worn away, writing pressure pushes the lead tube (13) inwardly such that a pivotable lever (15) of a transmission mechanism moves the clamp unit (14,17) relative to the lead (12) inwardly. The transmission mechanism is arranged such that the clamp unit (14,17) moves a greater distance than the lead tube (13). The movement of the clamp unit (14,17) also moves a magnet (16a) fastened thereto towards a fixed magnet (16b) of the same polarity. When the writing pressure is released, the magnet (16a) is repelled and advances the clamp unit (14,17) and the lead tube (13) by way of the transmission mechanism. The clamp unit (14,17) advances the lead (12) by a distance greater than that of the lead tube (13) such that the lead projects from the pencil tip. <IMAGE>
Patent GB-2108125-A (GB)
Title: Preparation of 4-(3-methyl-2- butenyl)-1,2-diphenyl-3,5- dioxopyrazolidine
Inventor: DONETTI ARTURO
IPC: C07D241/34
Filed: 1982-10-28
Abstract: 4-(3-Methyl-2-butenyl)-1,2- diphenyl-3,5-dioxopyrazolidine (Feprazone) is prepared by reacting 3- methyl-2-butenyl acetate with an alkali metal salt of 1,2-diphenyl-3,5- dioxopyrazolidine in the presence of a catalyst, preferably a palladium complex, and a ligand.
Patent GB-2111618-A (GB)
Title: Disc brake pad assemblies
Inventor: BAUM HEINZ WILLI
IPC: F16D65/092
Filed: 1982-12-30
Abstract: A friction pad assembly comprises a backing plate (1) having friction material (2) secured thereto, and an anti-rattle spring having a bent portion (5) intermediate its ends, the bent portion seating in spaced recesses (11) in the backing plate. The bent portion (5) is retained in position thereby. <IMAGE>
Patent GB-2118137-A (GB)
Title: Pallets and palletised containers
Inventor: ROSS HAROLD ABRAHAM
IPC: B65D19/40
Filed: 1983-01-20
Abstract: A pallet or palletised container comprises a deck supported above the ground by a plurality of horizontally extending, collapsible, tubular support spacers (46), each of which is provided with at least one insert (60) which can be fitted in the spacer (46) to hold the spacer erect. The inserts (60) may be box-like structures, or tubular formations which may be collapsible. Fixing of the spacers (46) to the deck may be by tongues and grooves. <IMAGE>
Patent GB-2115609-A (GB)
Title: Semiconductor structure manufacturing method
Inventor: FEIST WOLFGANG M
IPC: H01L21/76
Filed: 1983-02-17
Abstract: A mask comprising an upper layer 20 and a lower layer 18 of different materials is provided over the surface of a semiconductor structure. A window 21 is formed in the upper layer 20 over the portions of the structure wherein isolation regions are to be provided. Using the window 21 in the upper layer 20 as a mask, a larger window 23 is formed in the lower layer 18 by bringing a chemical etchant which etches only the lower layer into contact with the portions of the lower layer 18 exposed by the window 21 in the upper layer 20. The larger window 23 is used as an etching mask to form an isolation groove 28 in the underlying semiconductor structure. The upper layer 20 is used as an ion implantation mask for implanting particles into the bottom portion of the groove 28 while masking the side portions of the groove 28 from the ions. The grooves 28 are then filled with insulation. <IMAGE>
Patent GB-2119881-A (GB)
Title: Anti-skid brake control systems
Inventor: MORTIMER IVAN
IPC: B60T8/50
Filed: 1983-03-24
Abstract: An anti-skid hydraulic brake system includes a single solenoid valve 126 to selectively connect a brake part 136 to a supply port 132 or, in response to a skid signal to a dump port 137 while closing a cut-off valve 134, and a regulator valve 144 to control reapplication of the brake at a constant flow rate and comprising a fixed first orifice 149 and a second variable orifice having a part 148 movable relative to a port 140 in dependence on the pressure drop across the first orifice 149. On cessation of a skid signal the plunger moves far enough initially to cut off the dump port 137 but only moves far enough to open the cut off valve when the pressures across it have equalised. In Figure 10 displacement of the regulating valve plunger downwards cuts off the direct connection through passages 264 and 262 to the brake port 136 until the pressures across the fixed orifice 149 are again equalised. In Figure 11, not shown, the cut off valve is a latch valve released by pressure equalisation across it. <IMAGE>
Patent GB-2120469-A (GB)
Title: Electric cartridge fuse assembly
Inventor: MCGHIE TERENCE VICTOR
IPC: H01H85/25
Filed: 1983-05-11
Abstract: A cartridge fuse assembly is so designed that risk of a cartridge fuse being inserted into electrical connection with the fuse contact of the base without being supported on an insulating carrier is reduced. Each fuse contact of the insulating base is protected by a resilient insulating shroud 14 which is secured to the base and has a normally partially closed opening 17 defined by a pair of oppositely disposed separable edges 18, 19 that are urged closed by the inherent resilience of the plastics insulating material. Normally the opening is closed to such an extent that a blade contact cannot be introduced into the opening. The insulating fuse carrier has wedges for engaging between protruding parts 21, 22 of each shroud so that, as the carrier is detachably engaged with the base, the shroud-engaging wedges on the carrier engage each shroud and urges its edges apart to permit introduction of one of the blade contacts of the cartridge fuse. <IMAGE>
Patent GB-2138366-A (GB)
Title: Load retaining means
Inventor: ROWELL DAVID PATRICE ALAN BRIA
IPC: B60P7/08
Filed: 1984-04-02
Abstract: A load retaining means for a vehicle comprises a curtain-like structure 2 of relatively small mesh material, having suspension means 7 along one edge enabling suspension of the curtain structure from an upper part of a vehicle, attachment means 10 at or near the other edge for attachment to a floor, loading bearing platform or associated part of the vehicle, and tensioning means 11 associated with the attachment means for tensioning the curtain structure. The material has webbing straps 5 attached along its top and bottom edges, and between the suspension and attachment means. The tensioning means is an over-centre buckle. <IMAGE>
Patent GB-2159187-A (GB)
Title: Water closet system
Inventor: TEGLUND LARS
IPC: E03F5/20
Filed: 1984-05-18
Abstract: A water-closet which uses relatively small quantities of flush-water comprises a flush-water metering vessel (11), e.g. of 3 &cirf& 5 litres capacity, which is arranged above a porcelain toilet basin (10) and connected thereto via a pipe (16). Water is supplied to the metering vessel (11) from an overhead supply tank (12). Inlet (19) and outlet (18) valves are interconnected so that one is open when the other is closed. An outlet (44) of the toilet basin (10) is connected to an adjacent end (30) of a discharge conduit (29). The outlet (44) and adjacent conduit end (30) for a water seal (44, 30) having the form of a recumbent-S. The other end of the discharge conduit is connected to a siphon system (13) which incorporates in the vicinity of the toilet basin (10) a closed collecting basin (33) so arranged that when a total volume of flush water e.g. 35 litres is collected, the siphon operates and discharges this as a plug into the sewer. <IMAGE>
Patent GB-2148415-A (GB)
Title: Friction clutch cover assemblies
Inventor: JARVIS ROGER PORTER
IPC: F16D13/71
Filed: 1984-08-31
Abstract: A clutch cover assembly is disclosed in which the cover is fabricated from a number of prefabricated sector members (22) joined together at their ends (26). The ends (26) of each of the sector members (22) are formed to provide either an overlap joint (27a, 28a) as shown or a butt joint (not shown). The diaphragm spring (15a) is conveniently positioned by providing radially extending pips (32) on the outer periphery of the diaphragm spring (15a) which cooperate with windows (33) formed in a wall portion of the cover. The ends may be joined by rivets (31) or by welding or brazing. <IMAGE>
Patent GB-2149123-A (GB)
Title: Improvements in or relating to sensors
Inventor: WILLIAMS DR DAVID EDWARD
IPC: G01N27/12
Filed: 1984-10-30
Abstract: The present invention relates to sensors and more particularly to sensors suitable for use in gases and gaseous mixtures. According to one aspect of the present invention there is provided a sensor suitable for use in a gas or gaseous mixture which sensor includes a gas sensitive material having an electrical characteristic variable in response to the presence of a gas and containing or comprising a material of the general formula:  A2-y By Sn2-x Cx O7-z where the valency combination (A2-y By) is near to 3 and C is a tetravalent element. A and B may be chosen from rare earth elements (e.g. La, Gd, Ce or Y), divalent elements (e.g. Pb or Ca) and monovalent elements (e.g. K). C may be chosen from tetravalent elements such as Ti, Zr and Ru. The oxygen deficiency z is determined by the cation composition and the atmosphere and 2>y>/=O and 2>x>/=O. <IMAGE>
Patent GB-2151294-A (GB)
Title: Stud and socket fastening
Inventor: KLEIN JEAN-LUC RENE GEORGES
IPC: F16B37/08
Filed: 1984-10-31
Abstract: A socket for cooperating with a screw-threaded stud has an umbrella-shaped head 12 mounted on a cylindrical bore 14 profiled on the inside in the form of ribs 26 which are situated opposite one another, are vertically staggered, and extend from the inner wall of the member 3 towards the centre. The effect of these ribs is that little force is required for applying the stud while considerable force is required for its removal. <IMAGE>
Patent GB-2156162-A (GB)
Title: Casing for housing an oscillator circuit of an RF modulator
Inventor: NIGORIKAWA SHIGERU
IPC: H04B15/04
Filed: 1984-11-13
Abstract: A casing for an oscillator of an RF modulator is provided with a compartment (4') for the oscillation circuit and a compartment (5') for the high frequency circuits. A printed circuit board (35) has a substrate (35b) for the oscillation circuit and a substrate (35a) for the high- frequency devices, which substrates are formed integrally with each other. The printed circuit board (35) is accommodated by the casing such that the substrate (35b) for the oscillation circuit and the substrate (35a) for the high-frequency devices are received by the compartments (4', 5'), respectively. <IMAGE>
Patent GB-847476-A (GB)
Title: Improvements in or relating to compositions of matter suitable for the production of moulds
IPC: B22C9/00
Filed: 1956-02-29
Abstract: In forming a metal-casting mould, an intimate mixture of a finely divided refractory material and a binder consisting of a liquid alkali metal silicate and a soluble solid alkali metal silicate in admixture is applied, to a casting-defining surface and then rigidified by application of a gas such as carbon dioxide.  In preferred mixtures, an organic compound such as glycerine or sucrose is included, the refractory material constitutes 90-97% by weight of the mixture, the liquid alkali metal silicate constitutes 60 to 99% by weight of the binder and has a silica to alkali metal oxide molar ratio within the range 1,55 : 1, to 3,41 : 1,0, and the solid alkali metal silicate has a silica to alkali metal oxide molar ratio between 3,41 : 1,0 and 1,0 : 2,0.  According to an example, a silicate binder composition consisting of 90% liquid sodium silicate (1 Na2O : 2,48 SiO2) containing 46,6% solids and 10% powdered anhydrous sodium metasilicate was prepared by adding the solid silicate to the liquid silicate; the resultant silicate mixture had an Na2O : SiO2 ratio of 1 : 2,07 and a solids content of 51,94%.  The compressive strength of a two inch square cube of a sand-silicate mixture prepared by admixing 95% fine and -5% silicate mixture, after exposure to carbon dioxide for 10 seconds was 172 p.s.i; a similarly proportioned sand-silicate mixture employing a silicate binder consisting of 100% liquid sodium silicate had a compressive strength of 55 p.s.i. Specification 847,477 is referred to.
Patent GB-2155004-A (GB)
Title: Improvements in or relating to organic compounds
Inventor: DANNER BERNARD
IPC: D06P1/52
Filed: 1985-02-25
Abstract: A stable silicone-free antifoaming agent comprises (a) di-stearoyl ethylene diamine or a related compound, (b) a polyethylene wax, (c) hydrophobic silica, (d) a mixture of a natural hydrocarbon oil and vegetable oil and (e) a mixture of non-ionic emulsifiers with an average HLB value of from 6 to 12. The antifoaming agents are particularly useful in aqueous textile treatment liquors under HT conditions.
Patent GB-2155789-A (GB)
Title: Etoposide capsules
Inventor: BEGUM SELIMA
IPC: A61K9/48
Filed: 1985-03-18
Abstract: A liquid dosage form suitable for oral administration of etoposide which is sufficiently concentrated to be administered in capsule form and which provides improved absorption of the drug relative to prior oral formulations, comprises etoposide, polyethylene glycol, taurocholic acid, ethanol and a water-soluble acid.
Patent GB-2172949-A (GB)
Title: Device for fixing together two solid bodies one of which non-metallic
Inventor: SCARIONI OSVALDO
IPC: B41F27/12
Filed: 1985-03-28
Abstract: A device for fixing together two solid bodies 10, 14 one of which non-metallic, comprising an U-shaped element 10 at the free ends of which teeth 12 are formed. The non-metallic body 14 is placed inside the U-shaped element 10 and the teeth 12 of said element 10 are engaged in said non-metallic body 14. <IMAGE>
Patent GB-2156989-A (GB)
Title: Device and method for measuring and adjusting lengths
Inventor: SCHUCHARDT GERD
IPC: G01B7/02
Filed: 1985-03-29
Abstract: A method and device for measuring and setting of lengths, comprising a fixed scalp (3), a movable scanning device (4) which includes two detector arrangements 7, 71 and 8, 81, and an evaluation unit. The second of the detector arrangements is separated from the first detector arrangement by a very precise distance A. It is on the basis of the distance A that measurements are established by the device. In operation, eg of a movable support 1 along a lathe bed, primary pulses produced by one detector arrangement are compared with secondary pulses produced by the other detector by means of the electronic evaluating unit to modify the position measuring output to take account of inaccuracies in the operating of the scale 3, eg caused by temperature variations. <IMAGE>