baber/WOPTO huggingface dataset:
Patent GB-1439714-A (GB)
Title: Torch ignition type internal combustion engine
IPC: F02B19/10
Filed: 1974-04-05
Abstract: 1439714 IC engines - torch ignition type NISSAN MOTOR CO Ltd 5 April 1974 [10 April 1973 (2)] 15222/74 Heading F1B The invention relates to torch ignition type I.C. engines which comprise main and auxiliary combustion chambers, a weak combustible mixture being supplied to the main combustion chamber and a rich combustible mixture being supplied to the auxiliary combustion chamber, the mixture in the latter chamber being ignited by a spark igniter the resulting flame passing into the main combustion chamber whereby the weak mixture therein is ignited. The engine shown in Fig. 2 comprises an inlet valve 17 which opens to admit mixture into the main combustion chamber 15; also an auxiliary combustion chamber 25 which opens into the main chamber 15 and has air and  fuel inlets, also a spark igniter 26. The auxiliary combustion chamber is formed with a threaded stud portion by which it is detachably mounted on the engine. The auxiliary combustion chamber shown in Fig. 6 comprises an air inlet 27 and a fuel inlet 29 which are simultaneously controlled by a valve 54b, the valve stem 54a having a diaphragm 51 mounted thereon and being spring- loaded in the closed direction by means of a spring 57. A spark igniter 26 projects into the chamber 53. As the piston moves downwardly on the suction stroke the diaphragm deflects so causing the valve 54b to open and to admit fuel and air. The mixture is compressed during the compression stroke and the mixture fired at the appropriate time whereby flame projects from the auxiliary chamber to ignite the weak mixture which has been compressed in the main combustion chamber. The valve shown in Fig. 3 is solenoid-controlled, the valve 32a being held in the closed position closing off the air inlet 27 and the fuel inlet 29 by means of a spring 33. The valve is opened when the solenoid 34 is energized by closing of the electric circuit.
Patent GB-903468-A (GB)
Title: Improvements in or relating to electric amplifier circuits
Inventor: HUNT GEORGE JAMES
IPC: H04N7/10
Filed: 1960-05-02
Abstract: 903,468. Automatic gain-control. GENERAL ELECTRIC CO. Ltd. April 27, 1961 [May 2. 1960], No. 15354/60. Class 40 (4). [Also in Group XL (c)] The invention relates to a television relay system in which a number of television signals, modulated upon different carrier frequencies, are amplified in an amplifier comprising cascaded stages 1, 2, 3 of which 1 is linear and 2, 3 are normally linear but are liable to be driven into non-linear operation. According to the invention, beat frequencies between the various carrier frequencies generated by non- linear operation are separated from the output of stage 3 by means of a filter 4, are amplified by an amplifier 5 and rectified by a rectifier 6 to produce a control voltage which when smoothed is used to control the gain of stage 1, in such a manner that the input to stages 2, 3 is reduced, so reducing the amount of non- linear operation. The filter 4 may alternatively be tuned so as to pass the beat frequency produced between the sound and vision carriers of any one of the television signals. The controlled stage 1 may alternatively comprise a variable attenuator.
Patent GB-885261-A (GB)
Title: Improvements in or relating to polarimeters
IPC: G01J4/04
Filed: 1960-05-02
Abstract: 885,261. Automatic light intensity control systems. UCLAF. May 2, 1960 [Dec. 18, 1959], No. 15389/60. Class 38 (4). [Also in Group XL (b)] The intensity of the light source of a polarimeter in which for measurement the plane of polarization is oscillated at a frequency f is maintained constant by detecting intensity variations of light transmitted at a frequency 2f. Light passing from the source S to a photomultiplier P.M. is modulated at 50 c.p.s. by a Faraday cell Z. The 100 c.p.s. output of photomultiplier P.M. is rectified in a rectifier T, amplified in a differential amplifier Q and supplied to a motor MF which varies the width of the inlet and outlet slits of the monochromator M to control the light transmitted.
Patent GB-1413001-A (GB)
Title: Coating compositions
IPC: C09D125/00
Filed: 1973-03-30
Abstract: 1413001 Curable coating compositions ATLANTIC RICHFIELD CO 30 March 1973 [13 April 1972] 15427/73 Heading C3P A curable coating composition contains (a) a partial ester of styrene-maleic anhydride copolymer resin esterified to 25 to 125 per cent half-ester with a saturated or olefinically unsaturated alkanol of 12 to 30 carbon atoms, the styrene-maleic anhydride copolymer resin having a mole ratio of styrene to maleic anhydride of 1 : 1 to 4 : 1, and a molecular weight of 500 to 4000, the partial ester having an acid number in the range 20 to 300, and (b) an olefinically unsaturated fatty acid triglyceride, the triglyceride being a semi-drying oil or drying oil and having an iodine value of greater than 90; the oil being present in an amount of 33 per cent to 300 per cent by weight with respect to the esterified styrene-maleic anhydride copolymer resin. The composition may be an aqueous electrophoretic coating composition wherein the partial ester copolymer resin has an acid number of 20 to 300 and is at least partially neutralized to the extent of 20 to 120 per cent based on the acid number of the partial ester, with a neutralizing agent which is ammonia, C 1 -C 5  alkyl amine, C 1 -C 5  alkanol amine or an alkali metal hydroxide, the partial ester and the triglyceride being present in an amount of 5 to 30 per cent by weight of the total composition. In the examples a zinc phosphated cold roll steel or a European steel panel is coated using an electrocoating bath comprising stearyl alcohol and mixed C 16  to C 20  alcohol half-esters of styrene and maleic anhydride resins which have been neutralized with triethylamine, alkali refined linseed oil, maleinized linseed oil, ethylene glycol monobutylether and water. The panel is rinsed and baked at 350‹ F.
Patent GB-1119251-A (GB)
Title: Glass treatment process
IPC: C03C17/25
Filed: 1966-04-06
Abstract: A process for rendering glass-scratch-resistant comprises contracting a glass surface at a non-deforming temperature of at least 400 DEG C with an inert organic solvent solution of a titanium ester complex, cooling the glass surface and developing the scratch resistance; the titanium ester complex being the reaction product of 1 mole of a tetraalkyl titanate which is soluble in the organic solvent and at least one mole of a chelating agent having the formula RCOCH2COCH3, CH3COCH2 CO2 R, R1CH(OH)CO2 R or ROCH2CH2OH, where R is an alkyl group of one to six carbon atoms having the structure <FORM:1119251/B1-B2/1> where each of XX and Y is hydrogen or an alkyl group, and R1 is H or R.  The preferred tetraalkyl titanates are those of the formula Ti (OR1)4 where R1 is a C2 - C4 alkyl group. Preferred solvents are hydrocarbons, halogenated hydrocarbons and alcohols.  The titanium complex is preferably applied by spraying and the scratch-resistance may be developed by beeswax, adducts of ethylene oxide with stearic acid or soap solution.
Patent GB-529597-A (GB)
Title: Improvements in and connected with shutters or shields for electric socket outlets
IPC: H01R13/453
Filed: 1939-05-25
Abstract: 529,597. Two-part couplings. CRABTREE & C.O., Ltd., J. A.. McLOUGHLIN, H. F., HARRISON, B. G., and MORGAN, R. W.; May 25, 1939, No. 15514. Addition to 510,377. [Class 38 (i)] A shutter b having flat surfaces bl that normally cover the live sockets f and bevelled surfaces b<2> that are brought into line with the sockets f by the movement of an independent member actuated by the introduction of the earthing pin into its socket g, as claimed in the parent Specification, has the actuating member in the form of a pivoted arm or lever d: The lever is pivoted at d<2> to the base and has its free end d<1> formed to engage one wing of the pivoted shutter b.
Patent GB-510676-A (GB)
Title: Improvements in tools or appliances for rolling screw-threads
IPC: B21H3/04
Filed: 1939-05-25
Abstract: 510,676. Rolling screw-threads. WOLSELEY MOTORS, Ltd., and GOULD, G. May 25, 1939, No. 15520. Addition to 499,277. [Class 83 (iv)] In screw threading a rotating workpiece by laterally moving a pair of threaded rolls 1 into contact therewith as in the parent Specification the roll threads of each roll are caused to track in the same thread being formed on the work, by automatic rotatable adjustment, the roll spindles 2 being formed with a double bevel wedge end which co-operates with an interfitting projection 10 on a spring-pressed lever 9 to cause the rolls to come to rest in correct angular relationship ready for the next threading operation. The thrust of the spring lever 9 is counterbalanced by a spring 18 so tending to prevent jamming. Pass adjustment of the rolls is provided by making the portion of the carrier at 21 thin so that it will yield to the pressure of adjusting screws 20. The gap in the carrier opposite 21 accommodates a keyhole-sectioned bar 14 whereby the carrier can rock on a pivot 15 the amount of rocking being restrained by an adjustable stop pin 17.
Patent GB-1390237-A (GB)
Title: Photographic emulsions
IPC: G03C1/30
Filed: 1972-04-05
Abstract: 1390237 Photographic silver halide emulsions ILFORD Ltd 5th April 1973 [5th April 1972] 15616/72 Heading G2C Latent image regression in photographic silver halide emulsions hardened by a hardening agent containing a halogen-substituted 6-membered heterocyclic ring containing 2 or 3 ring nitrogen atoms e.g. 2:6-dichloro- or -dibromo-4-methoxytriazine, 2:6-dichloro-4-p-sulphophenyltriazine, 2:6-dichloro- or -dibromo-1:3-diazine or hexahalotriphospha-1:3:5-triazine, with or without 1:4- diaza-bicyclo-(2:2:2)-octane, is reduced by the addition of a compound of one of the following general formulae:- wherein R 1  and R 2  are each H, alkyl or aralkyl, both of which may be substituted, allyl, alkyloxycarbonyl, aralkyloxycarbonyl, or R 3 CO- where R3 is alkyl, aralkyl or aryl, any of which may be substituted, B is O or S, X is an anion and n is 0 or 1. Specified compounds are cystine and N:N<SP>1</SP>-dicarbobenzyloxy-1-cystine.
Patent GB-1167141-A (GB)
Title: Reflective Surfaces.
Inventor: PAXTON WILLIAM
IPC: E01F9/012
Filed: 1965-07-12
Abstract: 1,167,141. Reflective coating. W. PAXTON. 12 Oct., 1966 [12 July, 1965; 5 Oct., 1965; 7 April, 1966], Nos. 29497/65; 42226/65 and 15686/66. Headings B2E and B2K. [Also in Divisions El and G2]. A reflector comprises a sheet of white polyvinyl chloride, wood, hardboard, paper, metal, fabric or other fibrous material to which is applied a coating of white polyvinyl chloride paint, a coating of white acrylic paint, a layer of light reflecting beads, and a covering layer of a translucent, clear or tinted plastics material. The reflector is used for example on road marker cones, clothing, or car cushions adapted to be supported in frames so as to provide a warning of a stationary vehicle. The reflector sheet may be applied to the interior surface of a transparent road marker cone and be held in place by means of tongues projecting inwardly from the upper and lower edges of the cone or by an inner cone of foam rubber. Alternatively, the reflector may be formed as a sleeve which is placed over the cone. The cone itself is made of resilient material.
Patent GB-920841-A (GB)
Title: Diphenyl-methane derivatives and process for their manufacture
IPC: C07C233/00
Filed: 1959-05-07
Abstract: The invention comprises compounds of the formula <FORM:0920841/IV(a)/1> in which X is an alkylene radical of at most 3 carbon atoms, and R is an aliphatic acyl radical of at most 10 carbon atoms which contains a carboxylic group, an amino group (which may be substituted by methyl or ethyl groups or by a dimethyl- or diethyl-aminoethyl group), or a hydroxyl group (which may be acylated by succinic acid); and their salts.  They may be prepared by acylation of the corresponding secondary amines.  The acylating acid or derivative thereof may be substituted by a halogen atom or a keto group, when this is subsequently replaced by or converted into an amino or substituted amino group (including quaternary ammonium) or a hydroxyl group, respectively. The hydroxyl group may subsequently be acylated e.g. with succinic anhydride.  When the products of the invention contain a free carboxyl group this may be converted into a corresponding salt e.g. an alkali metal salt, while when they contain a basic radical they may be converted into salts with mineral or organic acids.  Detailed examples are given and a list of saltforming acids is also provided.  The amides of the invention, which are stated to dilate the coronary and peripheral blood vessels, may be made up with suitable carriers, into pharmaceutical preparations. These may take the form of tablets, dragees or injection solutions. Specification 916,644 is referred to.
Patent GB-990622-A (GB)
Title: Sleeve packer for chemical grouting
Inventor: III EDWARD BARNES STRINGHAM
IPC: F16L55/1645
Filed: 1964-04-16
Abstract: 990,622. Repairing pipes; pipe joints. PENETRYN SYSTEM Inc. April 16, 1964, No. 15831/64. Headings F2G and F2P. A sleeve packer for chemical grouting operations in underground conduits comprises a cylinder 6, a resilient expandable outer bladder 10 at each end thereof, a pipe connection 23 through the cylinder walls for inflation of said bladders into circumferential contact with a conduit 1 to form an annular space therebetween, and a pipe connection to the cylinders for the supply of a chemical grouting to said space. The two bladders are formed from a single sleeve 9 bonded and clamped by split rings 11 and flexible straps 13 to the cylinder at each end and similarly clamped at an intermediate point by ring 16 and straps 19. Pressurizing fluid, e.g. air, is pumped through a flexible hose and connections 23 to inflate the said bladders. Two chemical grouting pipe connections 33, 39 are incorporated in the described embodiment which are connected by check valves and couplings to flexible hoses. The chemicals, one which is in the nature of a catalyst, are supplied independently through each hose to mix in the annulus and form a fast-gelling seal in and around a conduit joint 2. A catalyzed aqueous mixture of acrylamide and N,N<SP>1</SP>-methylene-bisacrylamide is stated as being a suitable low-viscosity, fast-gelling grout. The apparatus may be used to seal leaks in conduits.
Patent GB-789787-A (GB)
Title: Production of oil-soluble sulfonates
IPC: C07C309/62
Filed: 1956-05-23
Abstract: Oil-soluble sulphonates are prepared by reacting synthetic petroleum resins of molecular weight at least 800, preferably at least 1000, with a sulphonating agent.  The petroleum resins are obtained by polymerizing, using a catalyst such as aluminium chloride, a fractionated cracked petroleum oil such as gas oil, in particular a highly unsaturated liquid fraction composed essentially of C5, C6, C7 hydrocarbons, half or more of the fraction comprising aromatic, olefinic and conjugated diene hydrocarbons, the balance containing olefines of lesser polymeric activity and the conjugated diene content being about 15 per cent.  Sulphonating agents such as sulphur trioxide and concentrated or fuming sulphuric acid are used in such amount that the sulphur trioxide equivalent is from 0.75 to 2.5 mols. per mol. of resin.  The sulphur trioxide is preferably carried by an inert gas such as air, nitrogen, carbon dioxide and sulphur dioxide. The resin may be dissolved in an inert solvent such as hexane, naphtha, petroleum ether, tetrachlorethylene, trichlorofluoromethane and nitrobenzene.  The product, separated and neutralized with a base such as caustic soda, potash, ammonia and amines, is recovered by distillation, preferably in vacuo and dried by azeotropic methods. The sulphonates are soluble in oils and organic solvents and may be used as lubricating additives, emulsifiers and rust-proofing compounds.
Patent GB-584069-A (GB)
Title: Improvements in grids or trays for cooking ovens
IPC: F24C15/16
Filed: 1944-08-21
Abstract: 584,069. Oven shelves. STOVES, Ltd., and RICHARDSON, W. Aug. 21, 1944, No. 15932. [Class 126] A skeleton tray or grid for an oven comprises two telescopic parts, a grid part 1 having lugs 5 adapted to engage studs 10 on the oven wall so that it can be held locked in the oven to form a fixed guide for the shelf 2 sliding horizontally upon it. The grid part 1 has auxiliary side members 6, 7 forming guides for the other side members 8, 9 and if desired, either of the side members 4 or 9 may have guard pieces 12.
Patent GB-492209-A (GB)
Title: Improvements in method of and machine for making multi-ply belts
IPC: C14B9/00
Filed: 1937-06-09
Abstract: 492,209. Belt making machines. WEBB BELTING CO., Inc., J. A. June 9, 1937, No. 16028. Convention date, May 10. [Class 140] A process of making multi-ply belting comprises coating the surfaces with cement, inserting sheets of dry cement between the plies, and intermittently applying pressure to the assembled structure. The plies 20, 21 pass between positioning rolls 49, Fig. 3, and applicator rolls 45, 46 respectively, rotating against the direction of movement of the plies and dipping in cement baths 63. They then pass over a driven roll 61 where the cement coated faces are brought together with the interposition of a sheet of dry cement 113, and are then pressed in a platen press P. A traction mechanism C, Fig. 1, comprising a carriage 140 oscillated on rails 141 by a compressed air piston A, draws the belt through the press. The carriage 140 comprises a lower plate and an upper plate mounted thereon by four pairs of toggle arms 188, Fig. 7, the pairs on each side being connected by a bar 193 which by striking a bar 204 causes the upper plate to lift and release the belt at the end of the working stroke, and by striking the press to release the upper plate which then falls and grips the belt at the end of the return stroke. A safety device prevents the plate from falling if the press is not open. The cylinder A and the platen press P are operated in timed relation by an electric motor B which drives a cam 220 controlling the opening and closing of their valves. The positioning and applicator rolls are intermittently driven from the pulley 157 which is rotated by the rope 155 attached to a weight (not shown) and the carriage 140. A chain 169 attached to the pulley 157 rotates the sprocket 165, which acts through a ratchet mechanism on a sprocket mounted on the same shaft and connected to the driving sprockets of the rolls by a chain 93. Specification 485,245 is referred to.
Patent GB-1310437-A (GB)
Title: Photo-sensitive material for electrophotography
IPC: G03G5/08
Filed: 1970-04-06
Abstract: 1310437 Electrophotographic material RANK XEROX Ltd 6 April 1970 [5 April 1969] 16143/70 Heading H1K [Also in Division C1] An electrophotographic photosensitive layer comprises zinc oxide prepared by moistening zinc oxide powder with water, optionally together methanol and/or ethanol and heating the powder, optionally after a drying step, to 400 to 700 C. The layer also has an insulating film forming binder, e.g. a styrene-alkyd resin, and may have a sensitizing dye, e.g. blue triphenylmethane, incorporated. A layer of the treated material is coated on to a support having an electroconductive layer thereon, e.g. paper coated with aluminium.
Patent GB-1525102-A (GB)
Title: Dewatering of sludge and like flowable material
IPC: C02F11/15
Filed: 1976-07-19
Abstract: 1525102 Dewatering sludges ELECTRICITY COUNCIL 19 July 1976 [ 18 April 1975] 16149/75 Addition to 1414564 Heading C7B Sludge e.g. P.V.C. emulsion is dewatered in an apparatus comprising at least one cathode structure, at least one anode structure adjacent the cathode and a porous electrically non- conductive element chemically inert with respect to the sludge extending over the anode between the anode and the cathode with means for traversing the porous element with respect to the cathode structure, means for maintaining a D.C. potential between the cathode and the anode or anodes and means for feeding the sludge into the region between the cathode structure and the porous element, and scraper means for removing solid material from the porous element as it passes the scraper means. The apparatus may comprise a cylindrical anode 14, Fig. 1 of graphite, lead dioxide, stainless steel, platinized titanium or ruthenium contained in a cylindrical membrane of woven nylon, polypropylene carbon fibre mesh or may be a ceramic material, scraper means 17 and stainless steel cathode 13 the sludge being supplied via weir 12. Alternatively the anode may be in the form of a hollow stainless steel mesh anode 30, Fig. 3 within rotating nylon mesh member 37 attached to tension roller 38 and adjoining scraper 40, a rotatable inner nylon mesh belt 37 adjoining the anode structure. The apparatus may comprise a single anode with its associated cathode or a plurality of electrodes in which a single cathode is provided between adjacent anode structures the sludge material being fed to the bottom of a tank containing the electrodes and excess removed via a weir overflow. The anodes may be sprayed with water to prevent binding of the movable membrane.
Patent GB-1496682-A (GB)
Title: Drive transmission device
IPC: F16H3/00
Filed: 1974-04-11
Abstract: 1496682 Change speed gear P B BETTINSON & CO Ltd 27 March 1975 [11 April 1974] 16172/74 Heading F2D  Transmission of power between members 21, 22 either of which may serve as the input member, is effected through a series of rotary elemerits interconnected to rotate together, e.g. intermeshed toothed wheels 11 to 17, and drive means 26, e.g. intermeshed toothed wheels 27, 28, which couples the member 21 with a selected one of the rotary elements. As shown, the wheel 27 is driven by the member 21 through a hexagonal shaft portion 32 and drives the output member 22 through the wheel 28, a hexagonal shaft 33, the wheel 12, wheels 13, 14, 15, and a hexagonal shaft 25. Different transmission ratios are obtainable by removing a pin 35 and partially withdrawing the drive means 26 to disengage the shaft 33 from the wheel 12 and then turning the drive means to engage the shaft 33 with another of the wheels 11 to 17. Further ratios may be obtained by removing the drive means 26 and replacing it with the positions of the wheels 27, 28 interchanged, or by replacing it with a different drive means. Also, the housing 10 for the wheels 11 to 17 may be partially withdrawn and turned to connect another of the wheels 11 to 17 with the member 22. The wheels 11 to 17 and 27, 28 are made of nylon &c. A modification employing sprockets and chains instead of intermeshed wheels is described, and further modifications using belts and friction wheels are referred to.
Patent GB-972993-A (GB)
Title: Improvements in or relating to devices for separating in a solid state constituents from a flow of gas mixture
IPC: F24F5/00
Filed: 1961-05-04
Abstract: 972,993. Cold separation of gas mixtures. PHILIPS GLOEILAMPENFABRIEKEN N.V. May 4, 1961 [May 7, 1960], No. 16204/61. Heading F4P. Readily condensable impurities e.g. water vapour and carbon dioxide are separated from a gas mixture e.g. air to be rectified or merely liquefied by passing the mixture through a layer of snow 10 formed at one end 6B of a roll 6 of apertured strip material having its other end 6A connected to a source of cold e.g., a liquid air bath 2; the mixture being admitted in the direction of the arrows p parallel to the axis of the roll 6 and being discharged radially in the direction of arrows q. Snow formation is assisted by layers 8 of relatively coarse gauge projecting from the inflow end 6B of the roll 6. In a modification the endwall 6A of the roll 6 is cooled by being connected to the head of a gas refrigerator.