baber/WOPTO huggingface dataset:
Patent GB-1440438-A (GB)
Title: Cleaning process
IPC: C23G5/04
Filed: 1972-09-07
Abstract: 1440438 Cleaning with non-aqueous solvents IMPERIAL CHEMICAL INDUSTRIES Ltd 9 Aug 1973 [7 Sept 1972] 41484/72 Addition to 1399867 Heading D1P Printed circuits comprising lines of flux on resin-bonded paper boards are cleaned by immersion in a heated non azeotrope-forming mixture of a halogenated hydrocarbon solvent and at least 2.5 parts by weight per 100 parts of halogenated hydrocarbon of an auxiliary solvent and rinsing the article in a second liquid containing a lower proportion of the auxiliary solvent. In one embodiment the rinsing mixture is also heated and the two mixtures have a common vapour zone from which condensate is directed to the rinsing mixture which overflows into the first mixture. A plurality of rinsing mixtures may be employed. Alternatively rinsing may occur in the vapour zone and the printed circuit may be withdrawn from the apparatus and allowed to cool before being rinsed by the vapour. In a further embodiment the two mixtures have separate vapour zones, condensate from both zones being returned to the second mixture. Preferably the auxiliary solvent comprises on a weight basis 5 to 90% of the first mixture and 0.5 to 10% of the second mixture. Preferred solvents are fluorochlorohydrocarbons containing 2 or 3 carbon atoms, especially 1, 1, 2, 2, tetrachloro-1, 2-difluoroethane and 1, 1, 2-trichloro-1, 2, 2-trifluoroethane. Preferred auxiliary solvents are n-butanol, 1- 4-dioxane, 2-methoxy ethanol, 2-ethoxy ethanol and 2-butoxy ethanol. The mixtures are maintained at 30‹ to 50‹C or higher, preferably at their boiling points. Exemplified mixtures are first mixture T.C.T.F.E. containing In example 1 the two mixtures comprise 1, 1, 2-trichloro-1, 2, 2, trifluoroethane with 14.8% and 1.2% respectively of n-butanol, a mixture containing 8.4% n-butanol being added to replace losses. In example 2 the mixtures comprise 9.3% and 2.7% of 1, 4-dioxane and are topped up by a mixture containing 9.8% 1, 4-dioxane.
Patent GB-1247308-A (GB)
Title: Polyethylene terephthalate film for roentgen photographic film support
IPC: G03C1/795
Filed: 1969-08-20
Abstract: 1,247,308. Mass colouring polyethylene terephthalate. FUJI PHOTO FILM CO. Ltd. 20 Aug., 1969 [21 Aug., 1968], No. 41595/69. Heading C3R. [Also in Division G2] A film of polyethylene terephthalate suitable for use as a support for a film for radiography (Division G2) is produced by mixing polyethylene terephthalate with at least one colouring compound of the Formula I wherein A is hydrogen or a hydroxyl group, B is hydrogen or a hydroxyl, phenyl amino, methylphenylamino or methoxyphenylamino group, C is a phenylamino, methylphenylamino or methoxyphenylamino group when B is hydrogen and is otherwise a hydroxyl group, and R 1  is hydrogen or a methyl or methoxy group; and forming the mixture into a film.
Patent GB-1082234-A (GB)
Title: Electrostatic precipitator
IPC: B03C3/38
Filed: 1964-10-12
Abstract: 1,082,234. Electrostatic precipitators. HITACHI Ltd. Oct. 12, 1964 [Oct. 11, 1963 (2); Oct. 15, 1963 (2)], No. 41624/64. Heading B2J. In order to reduce the electrification demand for dust particles in an electrostatic precipitator used for the purification of dust-laden air and comprising grounded electrodes 1, high voltage electrodes 2 and ionizing wires 3, a perforated member, such as a screen 4, Fig. 1, or a perforated plate 7, Fig. 3, is provided in front of (as seen in the direction of air flow) the wires 3 in order to remove part of the dust particles from the dust-laden air prior to its passage through the precipitator proper, the perforated member being insulated relative to the ground and having a very low draught resistance and a very small electrostatic capacity. The perforated member may be made of  metal or of insulating material. In Fig. 2, two perforated plates 5 are used separated by a layer of fibrin or porous mechanical filter element such as glass wool or polyurethane. In another embodiment, the high voltage electrodes are Y-shaped in cross-section when viewed in a direction at right angles to the direction of air flow.
Patent GB-1062556-A (GB)
Title: Method of preparing 1,1-disubstituted diunsaturated compounds and polymers and novel products thereof
IPC: C08F20/02
Filed: 1964-10-13
Abstract: Compounds CH2 = CR1 . CR2 = CXY or CH­C.CR2=CXY and homopolymers thereof, wherein R1 is hydrogen,halogen, phenyl or C1- 5 alkyl, R2 is hydrogen or methyl, X and Y are CN, COOEt, SO2Et, SO2Ph, CHO, COCH3, COPh, PO(OEt)2, or CONH2 or X may also be phenyl, are prepared by reacting CH2 = CR1COR2 or CH­C.COR2 with XCH2 in the presence of at least one metal salt having a cation which is Zn, Cu, Mn, Cr, Co, Ni, Ca, Mg or Li and an anion which is Cl, Br, I, No3 or C1- 18 carboxylate; when X is phenyl, R1 and R2 are hydrogen and the salt is a carboxylate.  Solvents, mineral acids, antioxidants and drying agents may be present.  Novel compounds.-Compounds as above in which X and Y are dissimilar are claimed as novel.  The Diels-Alder adduct of 1-cyano-1-carbethoxy butadiene-1,3 with anthracene is referred to The products of the invention are of use in adhesives and coatings.ALSO:Homopolymers of compounds of the formula CH2 = CR1.CR2 = CXY or CH = C.CR2 = CXY where R1 is hydrogen, halogen, phenyl or C1- 5 alkyl, R2 is hydrogen or methyl and X and Y are CN, COOEt, SO2Et, SO2Ph, CHO, COCH3, COPh, PO(OEt)2 or CONH2 or X may also be phenyl, are prepared by reacting CH2 = CR1. COR2 or CH = C.COR2 with XCH2Y in the presence of at least one metal salt having a cation which is Zn, Cu, Mn, Cr, Co, Ni, Ca, Mg or Li and an anion which is Cl, Br, I, NO3 or C1- 18 carboxylate; when X is phenyl R1 and R2 are hydrogen and the salt is a carboxylate. Solvents, mineral acids, antioxidants and drying agents may be present.  Homopolymers of compounds as above in which X and Y are dissimilar are claimed as novel.  Reference is also made to polymerization of the monomers.ALSO:Protective coatings for metals (aluminium in examples) are produced by treating the metal with one of brominated 1-cyano-1-carbethoxy-3-n-amylbutadiene; 1-cyano-1-carbethoxy-3-chlorobutadiene; 1-cyano-1-carbethoxy-2 -methylbut-1-en-3-yne; or 1-acetyl-1-phenyl-butadiene, each containing 10% of accelerator (the first two the 1:1 adduct of piperazine with di-N-nitroso-p-phenylene dihydroxylamine; the third methylaniline; and the fourth hexamethylenediamine), and heating these coatings protected the metal against attack by 5% HCl.
Patent GB-1110729-A (GB)
Title: Improvements in or relating to filters
IPC: B01D27/06
Filed: 1966-09-22
Abstract: 1,110,729. Fluid filter. PRECISION MECANIQUE LABINAL. 22 Sept., 1966 [23 Sept., 1965], No. 42311/66. Headings B1D and BIT. A disposable filter, stated to be applicable to petrol or lubricating oil circuits in I.C. engines and to circuits carrying gases containing radioactive contaminents, comprises a hollow element 1 in a casing whose end consists of a thin annular cover 6, crimped to the casing body and a moulded central portion 8 adapted to be screwed on to a mounting spigot 4. An internal rubber or plastics gasket 20 seals between element 1 and portion 8 and overlaps fluid inlets 18 to form a non-return valve. Cover 6 and portion 8 may be force fitted together, or cover 6 may be moulded into portion 8 (Fig. 7, not shown). The two parts may overlap in various ways (Figs. 2-7, not shown) so that sealing gasket 11 is located in either cover 6 or portion 8. Cover 6 is metal, portion 8 may be plastics or a Zn/Al alloy.
Patent GB-1331461-A (GB)
Title: Method of manufacturing lattice girders
IPC: E04C3/04
Filed: 1970-09-03
Abstract: 1331461 Making lattice girders; welding by pressure RHEINBAU GmbH 3 Sept 1970 [3 Sept 1969 6 March 1970] 42328/70 Headings B3A and B3R A lattice girder is made from a steel mat comprising longitudinal 1, 1<SP>1</SP> and transverse 2 rods by bending a longitudinal section separated from the mat about an axis substantially parallel to, or substantially coincident with, the axis of a longitudinal rod 1, Fig. 2. The mat is made by spot welding and the longitudinal rods are arranged in groups, the mat being severed between the groups to form the girder sections and the spacing between adjacent groups being less than that between the longitudinal rods forming a group. The transverse rods are preferably disposed at an angle other than a right angle to the longitudinal rods. The mat may be severed so as to leave stubs on all, none or alternate ones of the transverse rods 2 of a section. The stubs may be bent partially or wholly to lie in the longitudinal direction of rods 1<SP>1</SP> and to secure the girder to a reinforcing mat. The bent stubs may be bent again, downwardly at (11), Fig. 9 (not shown), to act as spacers and may be coated with synthetic plastics material. Alternatively push-on or fixed plastics spacers may be mounted on the stubs. A section may be bent through 180 degrees, preferably about an axis slightly spaced from the axis of a rod 1, and the rods 1<SP>1</SP> welded together. A girder may comprise only two longitudinal rods 1, 1<SP>1</SP>, Fig. 10, both ends of the transverse rods 2 being bent to engage under transverse rods 6 of a reinforcing mat. To achieve the desired angular disposition of the rods 1 and 2 in the initial mat either the spot welding machine is pivotable about a vertical axis or the longitudinal rods are fed to a fixed machine at the desired angle.
Patent GB-1143375-A (GB)
Title: Phenolic phosphites
IPC: C07F9/145
Filed: 1966-09-23
Abstract: 1,143,375. Phosphites-containing hydroxyphenyl groups. UNIROYAL Inc. 23 Sept., 1966 [8 Nov., 1965], No. 42442/66. Heading C2C. [Also in Division C3] The invention comprises a phosphite ester having at least one hindered phenolic hydroxyl group and represented by the general formula (A-O) x (B-O) y ,P, wherein A is a mono- or ditertiary alkyl substituted p-hydroxyphenyl group, B is a hydrocarbon group, x is 1 to 3 and y is 0 to 2, x+y being equal to 3. The radical B may be alkyl, cycloalkyl, aryl, alkaryl or aralkyl, and is preferably an alkyl phenyl group. The esters may be obtained (a) by reacting PCl 8  with a mono- or di-tertiary alkyl hydroquinone, (b) by reacting PCl 3  consecutively with a hydrocarbon-substituted phenol and the substituted hydroquinone, (c) by treating a mixture of a phenol (including a hydrocarbon-substituted phenol) and the tertiary alkyl hydroquinone with the appropriate amount of PCl 3  or (d) by heating an aliphatic or aromatic phosphite triester or mixed aryl alkyl phosphite with the tertiary alkyl hydroquinone or with a mixture thereof with a phenol, if desired in the presence of a catalyst. Several phosphite ester products are specified and examples are given for the production of tris-(2,5-di-(tertiary butyl)-4- hydroxyphenyl) phosphite and the corresponding tris-(2,5-di-(tertiary amyl) compound, mono- (2,5 - di - (tertiary amyl) - 4 - hydroxyphenyl) diphenyl phosphite, bis-(nonylphenyl) mono- (2,5 - di - tert. - butyl - 4 - hydroxyphenyl) phosphite, mono - (2,5 - di - tert. - butyl - 4 - hydroxyphenyl) diphenyl phosphite and phenyl dodecyl- (2,5 - di - tert. - amyl - 4 - hydroxyphenyl) phosphite, the latter being obtained by reacting triphenyl phosphite with 2,5-di-tert.-amylhydroquinone in equimolar proportion and then reacting with 1 mol. of n-dodecyl alcohol. The products are useful in the stabilization of polymers, especially polypropylene.
Patent GB-1522444-A (GB)
Title: Detector circuit for reading signals on data lines
IPC: G11C11/4091
Filed: 1976-10-13
Abstract: 1522444 Transistor sense amplifiers ROCKWELL INTERNATIONAL CORP 13 Oct 1976 [9 Feb 1976] 42592/76 Heading H3T A sense amplifier for a memory employs metal oxide semiconductor devices having their body nodes connected to bit lines of the memory array so as to form a differential input to the sense amplifier. An input clock signal CL is applied directly to point A and via a delay 5 and inverter 6 to point B. When points A and B are both at a high level, transistors Q3, Q4, Q5, Q6 are all conductive clamping nodes 8, 10, 12, 13 to earth and turning Q1, Q2 off to reset the circuit. When A and B are both at a low level, Q3, Q4, Q5, Q6 are all off unclamping the nodes 8, 10, 12, 13 from earth. Nodes 12, 13 now take up potentials determined by a cell selected to be read out, which potentials determine the thresholds of transistors Q1, Q2. Nodes 8, 10 also rise in potential until bistable Q1, Q2 sets to a state with one of the transistors Q1, Q2 on and the other off, the conducting transistor being determined by the relative threshold values, and hence by the data stored on the cell. A then reverts to a low level, but the state of the read-out cell still remains stored in the state of Q1, Q2 until B returns to its high level to reset the circuit again.
Patent GB-1505797-A (GB)
Title: Electric switch
IPC: H01H13/56
Filed: 1976-10-14
Abstract: 1505797 Mechanical switches SWF-SPEZIALFABRIK FUR AUTOZUBEHOR GUSTAV RAU GmbH 14 Oct 1976 [16 Oct 1975] 42721/76 Heading H1N In a steering column switch the manual control lever 3 Fig. 2a moves a contact carrier 11 through a spring 12, the lever 3 and carrier 11 being interconnected through a pin 18 on a resilient arm 17 of the carrier engaging in a heart-shaped cam track 19 on the lever 3 whereby the carrier 11 is successively released in the down position and then withdrawn on successive up and down movements of the lever 3. In operation with the sliding contacts 20 Fig. 1 on the carrier 11 bridging fixed contact 56, 56a for headlights, movement of the lever 3 in direction 22 brings the contacts 20 to bridge fixed contacts 56, 56b for dipped headlights. Engagement of the projection 24 on the carrier 11 with a fixed stop 25 limits movement of the carrier whereby the pin 18 is released from its upper position in the cam track 19. The carrier 11 is thereby forced to the lower position by the spring 12 the lever 3 then being restored to its operative position as by a spring loaded plunger 7 running over cam 8. The lever 3 also carries a sliding contact 10 movable over fixed contacts 56a, 30 for operating a headlight flasher circuit.
Patent GB-1160175-A (GB)
Title: Brake Pressure Proportioning and Boosting Device
IPC: B60T8/26
Filed: 1967-09-20
Abstract: 1,160,175. Fluid pressure brakes. KELSEYHAYES CO. 20 Sept., 1967 [2 Nov., 1966], No. 42785/67. Heading F2F. A brake pressure proportioning and boosting device for inter-position between a master cylinder and a brake cylinder includes a differential area piston movable in a bore between an inlet and an outlet so as to increase the pressure of brake fluid in the bore and a power unit for assisting the differential piston and controlled in response to the piston movement. As described, when the foot pedal is depressed, fluid from a master cylinder (not shown) flows through a valve to a line 16 feeding the front brake cylinders. Further depression of the brake pedal causes fluid to flow through slots in a sleeve 36 to reach the left hand side of a piston 28 so as to deflect the piston against the bias of a spring 91, closing the valve so that the difference in cross-sectional area of the left hand end of the piston 28 from its main body causes a greater pressure to occur in line 16. Further depression of the brake pedal causes the diaphragm 61 to engage a spring 93 which closes a valve seat 84 against a diaphragm 69 so as to prevent air entering the chamber 96, further deflection of diaphragm 69 allowing the air in chamber 96 to be evacuated via tube 87 connected to the engine inlet manifold, hence diaphragm 61 gives power assistance to the piston 28. Valve 82 will open intermittently so as to maintain equilibrium. Still further depression of the brake pedal results in engagement of the diaphragm 61 with a spring 92, which maintains valve 82 closed so as to give an increased vacuum in chamber 96 and a further boost to the pressure in line 16. The rate of increase in pressure on line 16 applied to the front wheel cylinders thus increases in four stages (Fig. 5, not shown) whilst the pressure supplied to the rear wheel cylinders bears a linear relationship to the deflection of the brake pedal.
Patent GB-1003998-A (GB)
Title: A method of producing a panel containing polyester resins and panels produced by thismethod
IPC: B29B13/00
Filed: 1963-10-30
Abstract: 1,003,998. Moulding resin impregnated materials. JAUKER & CO. S.p.A. Oct. 30, 1963 [Nov. 2, 1962], No. 42827/63. Heading B5A. A method of producing a panel of inert powdered or particulated material, e.g. crushed granite and onyx, or metallic materials and wood in the form of particles and turnings, containing from 5% to 35% inclusive of one or more polyester resins, comprises the steps of (a) pouring a liquid homogeneous catalyzed polyester resin into a pre-heated mould to form a thin film on its bottom surface and leaving this film to gel; (b) pouring a powdered or particulated material, mixed under pressure with a catalyzed polyester resin, on to the gelled film in the mould; the mould being vibrated during this operation to distribute the material substantially uniformly over the film; (c) closing the mould and allowing the resulting panel to polymerize; (d) opening the mould and cooling the panel with air streams, before its removal from the mould by, for example, a suction system. The mould may be heated after closure to assist in polymerization. The material may be extruded after mixing with the resin to embed the resin therein and to eliminate any trapped air. Colouring pigments, oxidation inhibitors and dielectric materials such as graphite and black carbon may be added to the resins before they are mixed with the inert materials. The catalysts suggested are methylethyketone peroxide in a 60% admixture with dimethyphthalate and benzoylperoxide in a 50% admixture with tricresilphosphate. Inserts of any dimensions may be placed in the mixture of material and resin before polymerization to provide particular decorative effects. Examples are given in the Specification using particular resins in particular quantities and moulds heated to specific temperatures.
Patent GB-1486890-A (GB)
Title: Catalysts and their use in hydrogenation
IPC: B01J37/18
Filed: 1973-09-12
Abstract: 1486890 Iron oxide catalyst IMPERIAL CHEMICAL INDUSTRIES Ltd 4 Dec 1974 [12 Sept 1973 28 Nov 1973] 42881/73 and 55082/73 Heading C1A [Also in Division C2] The hydrogenation of adiponitrile to hexamethylenediamine is catalysed by a catalyst which consists of fused, solidified iron oxide particles containing not less than 96À5% iron oxide and having a O : Fe atomic ratio of 1À2-1À4 : 1 which have been activated by heating in the presence of hydrogen at a temperature of 200-600‹ C. The fused particles preferably contain not less than 97À5% iron oxide and have an O : Fe ratio in the range 1À3-1À39 and especially 1À33-1À37 : 1. The oxide is preferably substantially free from haematite and has a spinel structure. The composition may be obtained by fusing an iron oxide or mixture of iron oxides or a mixture of an iron oxide and metallic iron. The fused iron oxide is suitably crushed to a size of 5-16 BSS mesh and activated by hydrogen until at least 85%, preferably at least 95% of the available oxygen has been removed. The activating hydrogen suitably contains 0À25- 25% volume NH 3  and less than 1% vol. of water is conducted at a pressure of 1-15 atmospheres and 250-500‹ C. over the oxide at a rate of at least 7À5 ml/min/g. of oxide.
Patent GB-1484862-A (GB)
Title: Cold start fuel/air mixture supply devices for internal combustion engines
IPC: F02D33/00
Filed: 1973-09-12
Abstract: 1484862 Spray carburetters ZENITH CARBURETTER CO Ltd 11 Sept 1974 [12 Sept 1973] 42888/73 Heading F1H A starting carburetter comprises a valve 18 mounted in an air supply passage 10, 11, 12 and biased to an open position against the effect of engine suction tending to move the valve to close the passage, a thermostat 45 which positions a stop 41 limiting closing of the valve and a fuel metering orifice 31 which is in communication with the air passage upstream of the minimum cross-section defined by the valve when the valve closes or provides maximum restriction of the passage. A spring-biased valve 19 controls the inlet to the passage 10, 11, 12 to provide a substantially constant suction in the passage upstream of the valve 18 and the orifice is controlled by a needle movable conjointly with the valve 18. A sealing ring 34 on the needle may seal the outlet of the orifice 31. The lever 39 carrying the stop 41 has a stop 43 biased into engagement with a flange 48 on the thermostat rod 46 by the spring 44 and a stop 40 which limits opening movement of the valve 18 by the spring 36 due to abutment by the arm 37 carrying the valve and the fuel metering needle. A by-pass passage 51 connects the air passage portions 10 and 11 and an idling mixture passage 53 opens to the air passage downstream of the valve 18. The lever 39 may hold the valve 19 open when the thermostat 45 is heated to the normal engine operating temperature. In another embodiment, Figs. 2 and 3 (not shown), the arrangement of the parts is modified such that the thermostat rod 46 extends in a direction perpendicular to the direction of movement of the valve 18 and the downstream end of the air passage is at 90 degrees to the portion immediate downstream of the valve. The thermostat operated lever is replaced by a pair of arms (70, 71) pivoted on a common pin 42 and spring-biased to maintain a relative adjustable angle. In a further embodiment, Figs. 4 and 5 (not shown), the air valve (80) upstream of the valve 18 in addition to being subject to the suction between the valves has a stem (83) subject to the suction downstream of the valve 18 so that the substantially constant suction between the valves is a function of the downstream suction. The thermostat 45 may be heated by engine cooling water or an electric heater.
Patent GB-1477830-A (GB)
Title: Indane-1,3-dione derivatives
IPC: C07C45/45
Filed: 1973-09-12
Abstract: 1477830 Indane-1,3-dione derivatives SOC D'ETUDE ET D'EXPLOITATION DE MARQUES MAR-PHA 30 Aug 1974 [12 Sept 1973] 42904/73 Heading C2C The invention comprises compounds having the general formula wherein R 1  and R 2 , which may be the same or different, are hydrogen or C 1  to C 3  alkyl, and R 3  is hydrogen, halogen, C 1  to C 3  alkyl, methoxy, trifluoromethyl or nitro. They may be prepared by acylating indane-1,3-dione or a sodium salt thereof with a compound of formula the reaction being carried out in an organic solvent when the sodium salt is used, or by condensing a compound of formula wherein X is halogen, with a compound of formula in an organic solvent. The compounds of the invention exhibit hypoprothrombinaemia-inducing activity and may be administered orally in admixture with a pharmaceutically acceptable carrier or diluent.