baber/WOPTO huggingface dataset:
Patent GB-953111-A (GB)
Title: Improvements in and relating to polymerisation
IPC: C09D131/04
Filed: 1960-08-30
Abstract: Vinyl esters are polymerized in aqueous emulsion using a dispersing agent and at least 10% of the mixture of a low molecular weight 70 to 90% hydrolyzed polyvinyl ester protective colloid having a 4% aqueous solution viscosity of 1.2 to 3.0 centipoises at 20 DEG C. to produce a polymer emulsion comprising up to 60% of the emulsion of polymer particles having an average size of 1 to 1.5 microns diameter, the emulsion having a viscosity not exceeding 1,000 centipoises at 25 DEG C. for an emulsion containing 55% total solids.  The vinyl ester may be vinyl acetate, propionate, butyrate, valerate, hexoate, benzoate, stearate or phenylacetate and these may be copolymerized with one another or with other monomers such as dibutyl maleate, diethyl fumarate, dioctyl maleate, and mono-alkyl maleates.  The dispersing agent may be sodium sulphosuccinate dioctyl ester or other anionic, cationic or nonionic types and the catalyst may be hydrogen peroxide, lauroyl peroxide or sodium, potassium, urea, acetyl or oleyl peroxide or peracetic acid or sodium or potassium perborate or sodium persulphate.  An alkaline material may be added to the polymerization medium e.g. sodium and potassium bicarbonates carbonates and hydroxides or amines such as ethylene diamine.  The polymer emulsions may be used to produce adhesive coatings. Examples describe the polymerization of vinyl acetate in aqueous media in the presence of partially hydrolyzed polyvinyl acetate, sodium dioctyl sulphosuccinate, sodium bicarbonate and (1, 2 and 4) hydrogen peroxide and (3) lauroyl peroxide.
Patent GB-1485522-A (GB)
Title: High voltage insulated electrical conductor
IPC: H01B7/00
Filed: 1974-07-05
Abstract: 1485522 Reducing stress in electrical insulation WESTINGHOUSE ELECTRIC CORP 5 July 1974 [18 July 1973] 29847/74 Heading H1A [Also in Division H2] Electrical stress at the edge of a high voltage electrical conductor 34 where it is coextensive with, but spaced from a second conductive member 30, which extends beyond the first conductor and is insulated by layers of resin bonded tape, is reduced by the insertion of a material 40 of higher dielectric constant than that of the tape proximate to the edge of the first conductor. The insert may end at the edge of the first conductor, Fig. 3, or extend beyond it (Fig. 4). An additional insert beyond and below the first insert may also be provided (Fig. 5). The preferred insulating tape comprises mica. The preferred insert comprises barium titanate in a resin binder compatible with the resin used in the mica tape and giving a dielectric constant for the insert in the range 40-60. A dynamoelectric machine core with a slot may form the first member, and a conductor in that slot the second.
Patent GB-1142197-A (GB)
Title: Insulating copper strip conductors with a resinous composition using a powder coatingtechnique
Inventor: KENNEDY ANGUS GEORGE
IPC: H01B13/00
Filed: 1965-07-15
Abstract: 1,142,197. Coating apparatus, coated copper conductors. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. 20 June, 1966 [15 July, 1965], No. 30091/65. Headings B2K and B2L.  A bare electrical conductor formed from rectangular cross section copper strip and of a desired configuration is insulated by first subjecting the conductor to a cleaning and passivating treatment, then depositing a coating of electrostatically charged resin powder, e.g. epoxy or polyester resin, on the conductor to a required thickness, and thereafter fusing and curing the resin on the surface of the copper. Coating is effected by transporting the conductors 1, held in clamps 3, by means of a conveyor 2 through a tank 4 containing a cloud of electrically charged resin powder. The tank has a base consisting of a porous plate 5 through which air is blown to keep the powder in suspension, and which also holds a number of electrodes 6 which raise the powder to a negative potential. The copper strip may be of continuous length.
Patent GB-973490-A (GB)
Title: Gallium-arsenide semi conductor device
IPC: H01L21/00
Filed: 1961-08-21
Abstract: An alloy used in the manufacture of gallium arsenide tunnel diodes consists of 80% by weight gold and 20% tin.
Patent GB-630776-A (GB)
Title: Improvements in or relating to coffee percolators
IPC: A47J31/30
Filed: 1947-11-12
Abstract: 630,776. Coffee-infusing machines. MORPHY-RICHARDS, Ltd., PRINCE, N. M., and ANHOLT, H. Nov. 12. 1947, No. 30120. [Class 129] A coffee-infusing machine comprises a boiler A having an infusion cup D fitting detachably in the mouth thereof, the infusion cup being provided with a tube D<SP>1</SP> and the annular joint between the mouth of the boiler and the infusion cup is sealed by a releaseable pressure cap or lid F which comprises a receiving chamber F<SP>2</SP> having a discharge orifice F<SP>3</SP> and a strainer G formed as a single unit. The pressure cap may be clamped in position on the boiler by a clamping member H<SP>1</SP> provided with a head screw H, an annular seal F<SP>1</SP> being inserted between the pressure cap and the mouth of the boiler and the infusion cup. The pressure in the boiler forces water up the tube, through the lateral holes D<SP>3</SP> into the infusion cup, through the base plate E on which the coffee grounds are placed, and thence through the strainer G to the receiving chamber F<SP>2</SP> and the discharge orifice F<SP>3</SP>. Bleed holes D<SP>2</SP> are provided in the tube D<SP>1</SP> just below the infusion cup, through which low pressure steam and water can pass until the temperature and pressure are sufficient to force water up the tube D<SP>1</SP>. The boiler may be heated by an electric coil B<SP>4</SP>, controlled by a temperature-responsive device fitted between the boiler and the base of the outer casing.
Patent GB-1190573-A (GB)
Title: Vehicle Anti-Skid Braking Systems.
Inventor: DAVIS JOHN WALTER
IPC: B60T8/50
Filed: 1966-07-05
Abstract: 1,190,573. Anti-skid br@ system for road vehicles. DUNLOP CO. Ltd. 3 July, 1967 [5 July, 1966], No. 30121/66. Heading F2F. In an anti-skid braking system incorporating a skid sensing device arranged to release at least one of a vehicle's brakes to avoid locking, there is provided a sensitivity control valve 12 (Fig. 1) (detailed in Fig. 2) to control air pressure to the brake operating mechanism. The control valve 12 has an inlet port 24 connected to a reservoir 7 (Fig. 1) via a driver's valve 6 and an outlet 23 connected to a chamber 2 of brake operating mechanism 1. A restrictor member 25, movable by a diaphragm actuator 41 when supplied with air under pressure via inlet 13 and non-return valve 47 from a valve 9 when a plunger 10 therein is actuated by an inertia type skid sensor (not shown), provides a variable restriction to the flow of air through passage 22 for operating the brakes. The restrictor has a head 27 for engagement with a valve seat 28 and is provided with a recess 29 which permits only a restricted flow from inlet 24 to outlet 23 when head 27 is seated. The non-return valve 47 has a bleed orifice 50 to permit an exhaust flow of air from chamber 42 at a predetermined rate following each anti-skid operation. Anti-skid operation (Fig. 1).-When a skid is sensed plunger 10 of valve 9 is moved and causes air pressure from a reservoir 8 to be admitted to a chamber 3. Simultaneously air pressure is applied via line 13 to chamber 42 of actuator 41, thereby the restrictor member is moved to restrict flow to chamber 2. When the skid tendency is overcome plunger 10 is released and chamber 3 is connected to exhaust. The rise in pressure in chamber 2 is delayed by the restrictor to ensure that the rise does not occur in a period when anti-skid control valve 9 is operating cyclically to apply and release the brakes. Alternatively, the restrictor valve actuator may include a piston (Fig. 3, not shown) instead of a diaphragm, and a needle valve may be provided by means of which a restricted exhaust flow from the actuator is adjustable, to adjust the period of time in which the restrictor offers the greatest restriction. Specification 1,151,223 is referred to.
Patent GB-945711-A (GB)
Title: Emulsion paint
Inventor: DAVIDGE HAROLD
IPC: C09D131/04
Filed: 1960-09-01
Abstract: Emulsion paints are prepared by adding to a pigment paste of one or more pigments in water a binder comprising 0.5 to 10 parts per part by weight of pigment of an aqueous emulsion of a terpolymer of 60 to 90% wt. of vinyl acetate, 3 to 20% of an acrylic ester and 3 to 20% of a diester of maleic acid, the emulsion containing 40% to 65% by weight of polymer. Specified acrylic esters are butyl and 2-ethylhexylacrylate; specified maleic esters are dioctyl and dibutyl maleate; specified pigments are titanium dioxide, lithopone, china clay, blanc fixe, talc and mica. Optional ingredients mentioned are dispersants, e.g. sodium hexametaphosphate and sodium dioctylsulphosuccinate, and stabilizers and thickeners e.g. starches and water soluble salts of polyacrylates, polymethacrylates and partially substituted celluloses.
Patent GB-1314212-A (GB)
Title: Welding and cutting machines
IPC: F15B11/02
Filed: 1970-06-23
Abstract: 1314212 Seaming non-metallic sheet material; cutting sheet material; laminating BRITISH UNITED SHOE MACHINERY CO Ltd 23 June 1970 [23 June 1969] 30290/70 Headings B4B B5K and B5N In a high frequency welding and cutting machine comprising upper and lower platens which serve as electrodes, control means are provided so that, in operation, with a tool located on a workpiece postioned on the lower platen, the platens are closed and the tool is pressed against a workpieoe under a first pressure so that welding can be effected; then under a sharply increased pressure which is gradually restored to the first pressure so that the workpiece while still in a heated condition is pressed under a higher pressure without being cut through by the tool, the restored first pressure being maintained for a dwell period during which the workpiece is allowed to cool; and finally under a second higher pressure so that a cutting operation is effected on the workpiece.  The workpiece may comprise two thermoplastic layers or non-thermoplastic layers having a heat-sensitive adhesive therebetween. The weld may be an overall weld. The control means comprises an hydraulic circuit, the Fig. (not shown), including a first valve arrangement having a throughflow position, in which a spring-return piston-andcylinder arrangement for effecting relative movement of approach between the platens is caused to operate under a first pressure, and a shut-off position, in which the piston-andcylinder is caused to operate under the second higher pressure. The hydraulic circuit also includes a second valve arrangement which, upon termination of the high frequency welding operation, is switched to a shut-off position to cause the piston-and-cylinder to operate under a sharply increased pressure which is gradually restored to the first pressure by a pressure control valve. An electric circuit (not shown) includes a variable time relay for controlling the duration of the welding operation and the arrangement is such that the second valve arrangement is caused to move to its shut-off position upon timing out of the relay. Alternatively, a variable time relay for controlling the duration of the dwell period during which the workpiece is allowed to cool is provided and the arrangement is such that the second valve arrangement moves to its shut-off position upon the relay being energized. The machine may comprise an upper platen mounted on a driven carriage movable between two operating stations and a lower platen at each station.
Patent GB-1398321-A (GB)
Title: Process for the partial combustion of a fuel in a reactor
IPC: C10J3/04
Filed: 1972-06-28
Abstract: 1398321 Combustible gases SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ NV 28 June 1972 [30 June 1971] 30301/72 Heading C5E Gas mixtures containing CO and H 2  are produced by partially combusting a fuel containing free and/or bound carbon, e.g. coal dust suspensions, gasoline, naphtha, fuel oil, natural gas, in a reactor at 1 to 20 kg/cm.<SP>2</SP> absolute, in the presence of an oxygen containing gas, wherein the fuel component and oxygen containing gas component are fed separately through a burner nozzle which produces a central jet of one component and a hollow stream surrounding this jet of the other component, this latter hollow stream being fed to the burner at a pressure which is 0À1 to 3À0 kg/cm.<SP>2</SP> higher than the pressure prevailing in the reactor.
Patent GB-1048287-A (GB)
Title: Improvements in or relating to the manufacture of elongated mouldings
IPC: B29C48/09
Filed: 1963-07-31
Abstract: 1,048,287. Extrusion moulding. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. July 31, 1963 [Aug. 3, 1962], No. 30370/63. Heading B5A. In a method of forming elongated mouldings, synthetic material is extruded through a metal - tube of constant cross-section at such a rate that the temperature of the moulding immediately subsequent to extrusion is such that the synthetic material may expand elastically but is not substantially deformable under its own weight. In an example, polyethylene granules are fed from a funnel 4 into a chamber 5 having heating channels 6 and extruded through a brass tube 2 of 50-100 cm. in length and 0À5- 5 cm. in diameter, the extruded rod being transported by a conveyer 3. The temperature of the polyethylene on entering the tube was 160 C. and on emerging at 8, 90 C. The tube is of copper, copper alloy or steel and circular, elliptical or semi-circular or elliptical in X- section.
Patent GB-1157206-A (GB)
Title: Improvements in or relating to Electromagnetically Operated Brakes
IPC: F16D55/28
Filed: 1967-07-03
Abstract: 1,157,206. Electomagnetic brakes. BARUFFALDI FRIZIONI S.p.A. 3 July, 1967 [2 July, 1966], No. 30512/67. Heading F2E. A device for the automatic adjustment of a safety brake comprises a helically threaded member 9 coupling the armature 11 to the thrust plate 4 to permit relative axial movement if the armature 4 is rotated. A spiral spring 13 is wound up as armature 11 is wound on to the hub 9, and tends to rotate the armature in a direction towards the electromagnet 12 until it meets studs 14. De-energization of the electromagnet, e.g. by power failure of a hoist motor, allows springs 8, 15 to urge thrust plate 4 against brake disc 5 to press it against casing 2, the tension in springs 15 preventing the armature 11 rotating. As the friction surface wears armature 11 rotates until it is again in contact with studs 14 to maintain the gap d constant.
Patent GB-409363-A (GB)
Title: Improvements in or relating to rotary compressed air motors
IPC: F01C1/344
Filed: 1932-10-31
Abstract: 409,363. Rotary engines. BROOM, H. S., Temple Orchard, Amersham Hill, High Wycombe, and BROOM & WADE, Ltd., High Wycombe, Buckinghamshire. Oct. 31, 1932, No. 30518. [Class 110 (ii).] A compressed air engine 6 of the outwardlysliding vane type which is adapted to drive the spindle 1 of a drilling machine or the like, is provided with a manually operated sleeve valve 21 to control the ports and passages leading air to drive the engine in one direction or the other and to exhaust the same. Balls 29 of a governor press upon a conical member 30 to rock a lever 31 and thus actuate valves on the inlet and exhaust sides of the engine to throttle the admission and exhaust air and control the engine speed. Compressed air passes through one or more valves 36 to a chamber 5<1> and then through ducts to press out the vanes in their slots, when the engine is started up or running slowly. An auxiliary exhaust port is provided on each side of the main exhaust port, the latter being always open to atmosphere, but only one of the auxiliaries being opened at a time. The main exhaust may be in the centre of the crescent-shaped working chamber, or to one side of this position so that different degrees of expansion of the air may be secured for clockwise or anti-clockwise running. A spring 27 forces the sleeve 21 on to the tapered admission pipe E. The sleeve valve controls four ducts leading to the air admission ports, and also the auxiliary exhaust ports. The air supply to chamber 5<1> may be controlled by a centrifugal governor, or by the sleeve valve 21.
Patent GB-484992-A (GB)
Title: Separating and grading solid particles from suspensions in liquids by centrifugal means
IPC: B04B5/10
Filed: 1936-11-09
Abstract: 484,992. Centrifugal separators. BIRD MACHINE CO. Nov. 9, 1936, No. 30521. Addition to 456,420. [Class 23] In the method of separating and grading, by centrifugal means, finely divided solid particles in suspension in liquids as described in the parent Specification, arrangements are made to maintain substantially constant the rate of flow of the suspension in each stage of centrifugal action. The method is particularly applicable to the treatment of aqueous clay suspensions but may be used with other pigments and fillers. A number of centrifuges are used, three, 25, 34, 37 being shown in the Figure. Each has a frusto-conical bowl which is open at its smaller end for the entry of the feed pipe, and for the discharge of the deposited solids brought there by an helicoidal discharge blade. The fluid mixture supplied to each bowl is delivered under a constant head of pressure so that the rate of flow through each bowl is constant. The fluid or slurry is passed from the vat by the pipe 26 to the tank 27 from which it is circulated to a constant level tank 29 by a pump 28 at such a rate that there is always a flow back by the pipe 30 to the tank 27. From the tank 29 the fluid flows through the valved pipe 31 to the bowl of the centrifuge 25. The separated coarse solids pass to the trough 32 and can be removed for further treatment as desired. The fluid with the finer solids passes to the tank 27a from which it is passed to the constant level tank 29a by the pump 28a, and a valved pipe 31a conducts it to the bowl of the centrifuge 34. The separated solids pass to the trough 35 and the liquid is carried forward for further treatment in centrifuges as often as desired. The last centrifuge is preferably arranged so that electric action aids centrifugal force to deposit solids on the bowl wall as described in the parent Specification and in Specification 456,353. The sequence of operations may be reversed and the first separation then produces a liquid containing particles of the finest size and a deposit of all the coarser solids. This deposit is then re-suspended in water and again treated to produce a liquid containing the next finest grade of particles and a deposit of the remaining solids. The deposit can be treated as often as required.
Patent GB-1401701-A (GB)
Title: Twisting and stranding of cable
IPC: H01B13/02
Filed: 1972-06-29
Abstract: 1401701 Binding conductor pairs WESTERN ELECTRIC CO Inc 29 June 1972 [29 June 1971] 30537/72 Heading B8G [Also in Divisions D1 and H1] Pairs 23 of conductors are bound together by passing them through a rotating spindle 223 of a binder 220. Binder material 238a is led from spindle-supported cup 237 through opening 239 in a separately driven cup 241. To maintain constant binder material tension, the cup speed is varied with reducing cup diameter. Two binders 220 may be used, winding on binder material in the same or in opposite directions.
Patent GB-505281-A (GB)
Title: Improvements in and relating to portable electric table, standard and like lamps
IPC: F21V21/06
Filed: 1937-11-09
Abstract: 505,281. Electriclamp standards. ROWLEY, L. A. J., and ROWLEY GALLERY OF DECORATIVE ART, Ltd. Nov. 9, 1937, No. 30716. [Class 75 (iii)] The base 1 of an electric-lamp standard is provided with a peripheral groove 2 of width and depth to accommodate the flexible lead 6 in separate turns or coils located side by side, the lead 6 passing through a central hole 5 and a hole 4 at right-angles thereto leading into the groove. The bottom of the groove may be circular or square with rounded corners. For applying the invention. to an existing standard, a member having a lateral boss of smaller diameter, or three members, of which the intermediate one is of smaller diameter, may be secured to the base.
Patent GB-841903-A (GB)
Title: Method of increasing the water vapour porosity of fat components and a composition therefore
IPC: A61Q17/00
Filed: 1957-10-02
Abstract: In making compounds to increase the water vapour porosity of the fat component of cosmetic preparations (see Group VI) 2-methyl dodecanol is converted into its bromide by treatment with 48% HBr and reacted with sodium malonic ester to give 2-methyldodecyl malonic acid ester which is then saponified to give 2-methyl-dodecyl malonic acid which, on heating at 10 mm. pressure, decarboxylates to 4-methyl-myristic acid.  This may be converted to the ethyl ester by boiling with an ethanol-toluene-mixture, the ester being reduced with lithium aluminium hydroxide to 4-methyl tetradecanol which is converted to the bromide which, with sodium malonic ester gives 4-methyl tetradecyl-1-malonic ester which, on saponification and decarboxylation gives-6-methyl palmitic acid from which, as above, 6-methyl hexadecanol may be produced and, as above, through the bromide and 6-methyl hexadecyl-1-malonic ester, and saponification and decarboxylation, give 8-methylstearic acid. This may be converted to its ethyl ester which is reduced to give 8-methyl octadecanol.  Dihydro citronellol myristinate is prepared by reacting myristic acid chloride with dihydro citronellol in pyridine.ALSO:The water vapour porosity of the fat component of cosmetics is increased by adding thereto 1 to 10% by weight of a branched chain aliphatic compound having 5 to 20 carbon atoms in the open chain and having a branch chain containing less than 3 carbon atoms spaced at least 1 carbon atom from the end carbon atoms in the open chain and bring an alcohol or an acid or a straight chain ester of said alcohol or acid with said straight chain having 5 to 20 carbon atoms.  The fat component may be the conventional fatty materials used in cosmetic creams, lotions and salves, such as lanolin, petrolatum, vegetable oils, waxes and fatty acids.  Lists of acids alcohols, and esters are given and examples of the preparation of 4-methyl myristic acid, 6-methyl palmitic acid, 8-methyl stearic acid: 8-methyl octadecanol, 6-methyl hexadecanol: dihydro citroneleol myristate are given.
Patent GB-403512-A (GB)
Title: Improvements in spring balances or weighing machines
IPC: G01G3/02
Filed: 1932-11-02
Abstract: 403,512. Indicating apparatus. SALTER & CO., Ltd., G., and BACHE, T. W., 144, High Street, West Bromwich. Nov. 2, 1932, No. 30815. [Class 106 (iv).] The movable dial or pointer of a spring balance or other machine is connected to its actuating spindle by a number of resilient arms or blade springs, the object being to absorb the momentum of the dial or pointer and thus to avoid damage to the teeth of the driving gearing. As shown in Fig. 4, the dial is in the form of a conical rim 1 connected to its spindle by blade springs 12 free to slide in notches 14 in the rim to permit of the necessary flexing in action. In Fig. 5 the blade springs are shown applied to a pointer. Specification 402,930, [Group XVIII], is referred to.
Patent GB-300635-A (GB)
Title: A process of, and apparatus for, stretching, pressing, steaming and drying webs of fabric
IPC: D06C15/04
Filed: 1928-10-24
Abstract: 300,635. Maly, H. Nov. 17, 1927, [Convention date]. Drying fabrics in long lengths.-Wet fabric a is passed over a suction tube c, connected with a moisture receiver d, to a spreading-device e comprising - chains having pins or clips, and thence over a heated roller g and press m, which. may be heated, to a collecting beam. Heated guide rollers may be placed on either side of the press.