baber/WOPTO huggingface dataset:
Patent GB-170825-A (GB)
Title: Improvements in and relating to electric-emergency lighting installations
IPC: H02J9/02
Filed: 1921-08-12
Abstract: 170,825. Das, P. Oct. 28, 1920, [Convention date]. Addition to 162,587, [Class 38 (iv), Electric supply and transmission systems &c.]. Locking, electromagnetic.-The movable contacts 15, 6 of a double-pole switch are connected by an insulating bar 19 provided with a notch 18 into which the core 17 of an electromagnet 14 drops when the contacts 15, 6 are in their intermediate positions and the circuit of the electromagnet 14 is out of order.
Patent GB-382600-A (GB)
Title: Circuit arrangement for the recording and reproducing coils of telegraphones
IPC: G11B5/00
Filed: 1932-07-29
Abstract: 382,600. Magnetic recording and reproducing apparatus. BRITISH BLATTNERPHONE (STILLE SYSTEM), Ltd., 35, Little Newport Street, London. July 29, 1932, No. 21449. Convention date, July 30, 1931. [Class 40 (ii).] The coils of the recording or reproducing head of a magnetic talking machine are provided with a plurality of separate windings connected in separate circuits having different natural frequencies which are so chosen that the circuit arrangement as a whole has approximately constant impedance to all frequencies within the significant acoustic range. The natural frequencies of the individual circuits are arranged to be at the limit or outside of the significant range. The Figure shows the magnets 11, 12 of the device provided with two windings 3, 4 and 7, 8. The winding 3, 4 is in circuit with a blocking condenser 5 and the secondary 2 of a transformer connected with the transmitter or receiver and the winding 7, 8 is in circuit with a blocking condenser 9 and the secondary 6 of the transformer. The two circuits are such that their resonance peaks lie outside or at least at the upper and lower limits of the significant acoustic frequency range.
Patent GB-568466-A (GB)
Title: Improvements in or relating to rotary kilns for burning cement, ore and similar materials
IPC: F27B7/04
Filed: 1943-12-22
Abstract: 568,466. Rotary kilns. VICKERS-ARMSTRONGS, Ltd., and PARKER, L. D. Dec. 22, 1943, No. 21476. [Class 51 (ii)] In a rotary kiln A for burning cement, ore &c., the material is supplied to the kiln through a number of tubes f arranged longitudinally in a circle within the kiln where it is preheated or dried before entering the kiln by hot gases from the kiln passing radially outwards between the tubes on their way to the exit flue. The material is fed into the casing a<1> and delivered by buckets b to a central chamber c provided with helical guides d. It then falls through radial chutes e into the tubes f which convey it to discharge chutes g mounted on a cone h attached to the kiln shell and forming a reduced outlet for the kiln gases. Removable spiral lifters k lead the material away from the chutes g.
Patent GB-407248-A (GB)
Title: Improvements in or relating to chocolate
IPC: A23G1/00
Filed: 1933-07-31
Abstract: Chocolate masses or products are obtained by treating the powder with the reaction product from a polyhydric alcohol, an acid radicle containing phosphorus and oxygen, and a fatty or oily acid.  This process increases the liquidity of the chocolate mass without excessive addition of cocoa butter or lecithine.  In an example, tri-glycerides and glycerol are heated with P2O5 to give a liquid product suitable for working with the chocolate mass.
Patent GB-1093427-A (GB)
Title: Improvements in or relating to gear trains
Inventor: FORSYTH GEORGE HOWARD
IPC: F16H1/22
Filed: 1964-05-25
Abstract: 1,093,427. Bearings; toothed gearing. VICKERS Ltd. May 20, 1965 [May 25, 1964], No. 21588/64. Headings F2A and F2Q. In a reduction gear comprising a pair of diametrically opposed drive pinions meshing a floating pinion on the output shaft 16 backlash is prevented by mounting the shaft 16 between pairs of fixed roller bearings 18, 19 preventing movement of the shaft in a horizontal plane and supporting it on roller bearings 31, 32 capable of limited vertical movement, the bearings 31, 32 being mounted on a block 25 carried by a diaphragm 26 forming the upper surface of a chamber 29 to which pressure liquid is supplied through a duct 30, the vertical movement of the block 25 being limited by stops 36. 38.
Patent GB-276335-A (GB)
Title: Improvements in roof constructions
IPC: E04B7/10
Filed: 1927-08-16
Abstract: 276,335. Kolb, E., Aug. 17, 1926, [Convention date]. Void [Published under Sect. 91 of the Acts]. Addition to 267,123. Roofs. - The arc girders and horizontal bracing members described in connection with the roof construction of the parent Specification are replaced by an arcuate concrete covering plate 21 which is rigidly connected with trusses 4 arranged at intervals, or with the gable walls. The trusses 4 are in the form of reinforced concrete beams. Strengthening. ribs may be provided transverse to the longitudinal axis of the roof, and longitudinal ribs may be arranged at and between the ridge and support. The invention is applicable to flat roofs as shown in Fig. 7, trusses 4 extending from the ridge or crown 10 to rigid abutments 26, which are located above the supports of the arc girders 1. A roof may also consist of curved wood boards 27 extending transversely to the longitudinal axis of the roof and strengthened by beams 29, as in Fig. 8. Two layers of boarding may be employed. Openings for skylights &c. in the concrete roofs are provided with upstanding and depending rims.
Patent GB-717422-A (GB)
Title: Improvements in or relating to n-thioamines
IPC: C07D307/14
Filed: 1951-09-14
Abstract: The invention comprises N-thioamines of the formula <FORM:0717422/IV (b)/1> in which X is oxygen or sulphur, R is an alkyl or alicyclic group and y is an integer.  These compounds are prepared by reacting an amine of the general formula <FORM:0717422/IV (b)/2> with a sulphur halide.  Such amines are obtained by hydrogenation of the Schiff's base resulting from the condensation of a -furfuraldehyde or a -thiophenaldehyde with an alkyl or alicyclic amine.  Monosulphides result when two mols of the amine are reacted with one mol. of sulphur dichloride.  Using sulphur monochloride instead, disulphides are obtained.  Higher sulphides are obtained with higher proportions of sulphur halide, e.g. a tetrasulphide is obtained from equimolecular amounts of the amine and sulphur monochloride.  An acid acceptor, e.g. caustic alkali, or excess amine is preferably present during reaction.  In examples: (1) N,N1-dithio-bis-N-cyclohexyl-tetrahydrofurfurylamine and the corresponding tetra-sulphide, respectively, are obtained by reacting N-cyclohexyl tetrahydrofurfurylamine with different proportions of sulphur monochloride. N,N1-Thio-bis-N-cyclohexyl tetrahydrofurfurylamine is obtained from N-cyclohexyl tetrahydrofurfurylamine and sulphur dichloride; (2) N,N1-dithio-bis-N-isopropyl tetrahydrothenylamine is obtained by reacting N-isopropyl tetrahydrothenylamine and sulphur monochloride. N,N1 - dithiobis, (N - ethyl or methyl tetrahydrofurfurylamines) are obtained similarly from the appropriate amine; (3) N,N1-dithio - bis - N - n - butyltetrahydrofurfurylamine is obtained by reacting N-n-butyltetrahydrofurfurylamine and sulphur monochloride.  Also mentioned are further specific products of the above formula where R represents a methyl, ethyl, isopropyl, butyl, amyl, cyclohexyl, methylcyclohexyl, or ethylcyclohexyl radical.ALSO:N-Thioamines of the general formula <FORM:0717422/III/1> wherein X is oxygen or sulphur, R is an alkyl or alicyclic group and y is an integer are useful as adjuvants for mineral lubricating oils.  The preparation of such compounds is described (see Group IV (b)).  Specific compounds are described having the above formula where y is 1, 2 or 4, and R is a methyl, ethyl, isopropyl, butyl, amyl, cyclohexyl, methylcyclohexyl or ethylcyclohexyl radical.ALSO:N-Thioamines of the general formula <FORM:0717422/V/1> wherein X is oxygen or sulphur, R is an alkyl or alicyclic group and y is an integer are useful as vulcanizing agents for elastomers.  The preparation of such compounds is described (see Group IV (b)).  Specific compounds are described having the above formula where y is 1, 2 or 4 and R is a methyl, ethyl, isopropyl, butyl, amyl, cyclohexyl, methylcyclohexyl or ethylcyclohexyl radical.
Patent GB-1207717-A (GB)
Title: Spring units for mattresses and the like
Inventor: DOCKER LESLIE THOMAS
IPC: A47C27/06
Filed: 1968-05-08
Abstract: 1,207,717. Mattresses. MULTILASTIC Ltd. 29 July, 1969 [8 May, 1968], No. 21668/68. Heading A4M. In a spring unit for mattresses or cushions of the kind comprising parallel bands of wire springs 10 interconnected by helical wires 12 extending transversely of the bands, the springs 10 in each band being formed from a continuous length of wire so that adjacent springs are interconnected by integral wire connectors 11, 17, the wire end 23, formed by cutting through a connector 11 to sever the spring unit from a continuously produced spring unit, is drawn into the endmost helical wire 20 by expanding the end loop 25 or 27 of the endmost spring 28 of the band, the end of the wire 23 being bent into U-shape, as at 24, to limit the extent to which the wire 23 is drawn into the helical wire 20. When engaged with the helical wire 20 the U-bend 24 is further bent to define an eye 26 in which the helical wire 20 is engaged. The connectors 11 and the expanded loops 27 are secured to border frames 14 by bent metal strips 15.
Patent GB-222120-A (GB)
Title: Manufacture of vat dyestuffs containing sulphur
IPC: C09B7/06
Filed: 1924-09-15
Abstract: Thioindigoid dyes are prepared by condensing 8-halogen-1 : 2-naphtho-oxythiophene with isatine-a -derivatives.  In an example isatine is treated with phosphorus pentachloride in benzene and 8-chloro-2 : 2-naphtho-oxythiophene-added; the product dyes cotton in bluish-grey tints from the vat.  The 8-chloro-2 : 1-naphthooxythiophene may be obtained by treating 8-chloronaphthalene-1-thioglycollic acid with chlorsulphonic acid. 8-Chloronaphthalene-1-thioglycollic acid is obtained from 8-chlor-1-naphthylamine by the usual methods.
Patent GB-386901-A (GB)
Title: Improvements in means for facilitating evacuation of exhaust gases from internal-combustion engines of vehicles
IPC: F01N13/08
Filed: 1932-08-03
Abstract: 386,901. Exhaust details. PERRIER, E. H., 39, Rue Dutot, Paris. Aug. 3, 1932, No. 21795. Convention date, Aug. 3, 1931. [Class 7 (ii).] To extract the exhaust from the cylinders an ejector 7 is used, pressure air therefore being collected by a cowl 14 facing in the direction of movement of the vehicle on which the engine is used ; this air enters an annulus 15 surrounding a nozzle 16 which leads the exhaust into a Venturi tube 17. A valve 18 controls the air flow. The ejector 7 may be placed on the exhaust pipe 8 beyond the manifold 6, or an ejector may be used with each outlet from the cylinders ; in the latter arrangement flexible tubes may connect the ejectors with an air supply manifold. A further effort may be exerted on the exhaust gases by air collected by one or more cowls 12 on the pipe beyond the silencer 9.
Patent GB-396083-A (GB)
Title: Improvements in or relating to stokers for solid fuel
IPC: F23K3/14
Filed: 1931-10-30
Abstract: 396,083. Furnace grates and ashpits. AUTOMATIC COAL BURNER CO., Smith Tower, Seattle, Washington, U.S.A.-(Assignees of Peltz, G. M.; Elmhurst, Long Island, New York, U.S.A.) Oct. 30, 1931, No. 21811. Convention date, July 11. [Class 51 (i).] An underfed grate is provided with air passages having a cross-sectional dimension so small that only the smaller pieces of fuel and ash can enter and of such length and form as to prevent immediate passage of such pieces of fuel and ash therethrough by gravity to an air chamber beneath the grate to which air for combustion is supplied at such pressure as to create an air velocity through the passages sufficient to return to the fuel bed any particles which enter the passages. Fig. 3 shows a suitable form of grate for carrying out the invention arranged above an air chamber 15 to which air is supplied by a fan (not shown). The grate consisting of a number of superposed rings spaced apart to form narrow air passages or slits 105 is supported at the bottom on a ring 118 seated on the elbow 51 of the fuel conveyer conduit 4. The upper part of the grate 14 over which ash is discharged has a depending flange 97 secured thereto and dipping into a sealing trough 101. The cross section of the grate rings is shown in Fig. 7, ribs being provided on the lower surfaces of the rings to effect the desired spacing which is less than 3/16 of an inch. The fuel surfaces of the rings are so inclined as to provide recesses 108. The ashes entering the pit 5a are removed by rotary paddle arms 49, 62 mounted on a ring 54 supported on ball bearings on the exterior of the air chamber 15. The ash is carried round by the paddles and crushed against a plate 140 before falling into an ash conveyer conduit (not shown). Specification 396,722 is referred to. The Specification as open to inspection under Sect. 91 describes and shows also driving gear for the fuel and ash conveyers, but this subjectmatter does not appear in the Specification as accepted.
Patent GB-829614-A (GB)
Title: Microwave-radiation absorbers
IPC: H01Q17/00
Filed: 1958-07-08
Abstract: <PICT:0829614/III/1> <PICT:0829614/III/2> A panel for absorbing radio wave energy (see Group XL (c)) comprises a sheet of dielectric material 12.  Recesses 16 extend into the material from one face of the sheet and diminish in cross-section away from the said face.  The recesses may be conical as shown and need not necessarily be all of the same size or regularly arranged.  Only small areas 20 of unrecessed face are allowed to remain on the side of the sheet from which the recesses extend and the whole of this face, including the walls of the recesses, is coated with a layer of energyabsorbing material comprising conductive or semi-conductive particles in a non-conductive binder.  The material forming sheet 12 may be natural or butyl rubber, polyethylene, a butadiene-styrene copolymer, polymethyl methacrylate or polystyrene.  If light weight is important cellular polystyrene, isocyanate foams, formed or expanded rubbers or wood may be used.  Graphite is the preferred material for the absorbing layer particles but particles of conductive or semi-conductive ceramics, iron, amine vulcanizing agents for rubber, lower glycols, or lower alkyl polyol plasticizers may also be used. The particles are preferably applied by spraying, brushing or dipping the surface using a liquid dispersion or solution of binder having the particles therein and then causing the layer so formed to solidify.  Aqueous dispersions or volatile organic-solvent solutions of resins, natural or synthetic rubber may be employed.
Patent GB-878951-A (GB)
Title: Improvements in windscreen wipers
Inventor: BODDY JOHN
IPC: B60S1/40
Filed: 1958-07-09
Abstract: 878,951. Windscreen wipers. TRICOFOLBERTH Ltd. July 9, 1959 [July 9, 1958], No. 22043/58. Class 138(1). The arm 6 of a windscreen wiper is connected to the harness 4 by means of a transverse pin 30 carried by the arm and retained in position in slots 28 in flanges 10 on either side of the harness by the shoulder 20 on a leaf spring 18. This leaf spring, which is secured at the end remote from the shoulder 20 to the harness 4, is flexed by the end of the arm 6 to a position in which the pin 30 is no longer retained in position and the harness 4 can be removed when the latter is swung about the pin 30 in a direction away from the arm 6.
Patent GB-1103268-A (GB)
Title: Apparatus for weighing materials in the course of pneumatic handling
IPC: G01G19/00
Filed: 1965-05-25
Abstract: 1,103,268. Cyclone separators. D. K. MANUFACTURING CO. 25, May, 1965 [26, May, 1964], No. 22091/65. Heading B2P. [Also in Division G1] Apparatus for feeding granular material to weighing receptacles (see Division G1) comprises cyclone separators 3, 2 which are supplied alternately with air-transported material from an inlet pipe 6 having a diverting valve (12) (Fig. 2, not shown). The separators are connected to a common air outlet.
Patent GB-203872-A (GB)
Title: Improvements relating to electric control switches and current regulating means, such as resistances or auto-transformers for use therewith, specially applicable to motor starters
IPC: H02B1/00
Filed: 1922-08-15
Abstract: 203,872. Hirst, J. A., and Brook, Hirst, & Co., Ltd. Aug. 15, 1922. Switch boards. - An enclosed regulating switch C, which may be a motor starter of the type described in Specification 207,232, [Class 38 (iii), Electric motor control systems &c.], is mounted at the top of a vertical tubular member A set into a chambered base B which contains a terminal board and an isolating switch. Conductors extending inside the tubular member connect the motor starter to the terminal board and are taken out to make connection with resistances &c. contained in a separate box D, which is attached to the front face of the member A. Where transformers replace resistances, the transformer casing may rest on flattened portions of the base. Incoming cables are either taken directly into the base compartment through glands, or are taken into connection boxes attached to the member A at a convenient height. The whole structure may be attached to a wall.
Patent GB-1072621-A (GB)
Title: Improvements in a method of heat treating high-carbon stainless steels
IPC: C21D6/00
Filed: 1964-05-28
Abstract: High-carbon martensitic stainless steel containing less than 1.4% of carbon and less than carbon and chromium is first heated to a temperature 50 DEG  to 150 DEG C. above the lowest temperature to which the steel must be heated to produce the maximum as-quenched hardness, the former temperature being not less than 1125 DEG C.  The steel is then cooled to room temperature or below, and finally reheated to a temperature between 400 DEG  and 700 DEG C.  Sub-zero cooling may be to a temperature between -50 DEG  and -80 DEG C.  The method is particularly applied to a steel containing 0.8 to 1.1% carbon, 12.5 to 14.5% of chromium, and one or more of sulphur, phosphorus, manganese, silicon, vanadium, molybdenum, tungsten, antimony, nitrogen, cobalt, nickel, aluminium or titanium in a total amount less than 2.5%.
Patent GB-930091-A (GB)
Title: Improvements relating to the production of semi-conductor devices
Inventor: BETTERIDGE WALTER
IPC: H01L21/00
Filed: 1960-06-24
Abstract: 930,091. Semi-conductor devices. INTERNATIONAL NICKEL CO. (MOND) Ltd. June 13, 1961 [June 24, 1960], No. 22225/60. Class 37. [Also in Groups XXII and XXIII] A conductive joint is made between a wire or similar conductor and a metal layer firmly adherent to a semi-conductor body by placing the end of the conductor against the metal layer and embedding it in a paste-like dispersion of a metal powder in a liquid which is or which contains a thermally decomposable compound, the assembly being heated to decompose this compound leaving the metal to form a bond between the metal layer and the conductor. Conveniently the thermally decomposable compound is itself metal bearing, but the metal is not necessarily that used as the powder in the dispersion. The metal layer on the semiconductor body may be obtained by heating a layer of the metal dispersion but is preferably obtained by heating a layer of metal-bearing compound not containing dispersed metal powder. Examples are given of the conditions of the process. Metal powders mentioned are of silver, gold, platinum metals, nickel, and copper. The wire may be of platinum, palladium, or silver, and metal-bearing compounds of gold and platinum are mentioned. Semi-conductors to which the process is applicable include silicon, germanium, A<SP>III</SP>B<SP>V</SP> compounds, silicon carbide, bismuth telluride, lead telluride (see Provisional Specification), and refractory-like oxides such as nickel oxide and ruthenium dioxide. Specifications 878,821 and 878,822 are referred to.
Patent GB-353251-A (GB)
Title: Fin tubing for heat-exchange apparatus and method of making the same
IPC: F28F1/22
Filed: 1930-07-23
Abstract: 353,251. Gilled tubes for heat exchangers. GRISCOM-RUSSELL CO., 285, Madison Avenue, New York, U.S.A.- (Assignees of Jones, R. C. and Colston, R.; 285, Madison Avenue, New York, U.S.A.) July 23, 1930, No. 22252. Convention date, Aug. 1, 1929. [Class 64 (iii).] Heat exchanger tubes are provided with fins by inserting strips of metal in longitudinal grooves 23 on the surfaces of the tubes and pressing on the metal of the tubes on each side of a groove to cause the .metal to grip the strips. The width of the fins may be adjusted to give a square cross section so that a number of tubes may be built up to form a rectangle as shown in Fig. 14. The fins may also be applied to a rectangular tube as shown in Fig. 13.
Patent GB-448969-A (GB)
Title: Improvements in carburetors
IPC: F02M5/10
Filed: 1935-08-07
Abstract: 448,969. Spray carburetters. TRIGGS, W. W., 57, Lincoln's Inn Fields, London.- (Carter Carburetor Corporation ; 2834, North Spring Avenue, St. Louis, Missouri, U.S.A.) Aug. 7, 1935, No. 22292. [Class 7 (iii)] In a downdraught carburetter, a vent passage 24 rising directly from the base of an inclined fuel nozzle 17 to the atmosphere prevents bubbles of fuel vapour, which may be formed when the engine has been stopped but is still hot, from traversing the nozzle and thereby discharging fuel from it. The vent passage 24 extends more directly upwards than the nozzle and, from a point substantially above the normal fuel level to its junction with the feed passage to the nozzle, has a diameter larger than the bore of the fuel nozzle. A valve 27 at the top of the passage is opened by a loose connection 12 on the throttle whenever the latter is closed, a spring on the pivot 31 of the valve normally keeping it closed.
Patent GB-768371-A (GB)
Title: Improvements in or relating to electromagnetic induction apparatus
Inventor: JACOBY HENRY CHARLES EDWARD
IPC: H02K3/34
Filed: 1954-07-30
Abstract: 768,371. Securing conductors of dynamoelectric machines. GENERAL ELECTRIC CO., Ltd. July 20, 1955 [July 30, 1954], No. 22310/54. Class 35. To retain the edges of slot liners against the slot walls adjacent the entrance to open or semi-open slots, the slots in the laminations at the ends only of the core are notched as at 4 to receive the liner edges. These end laminµ may be non-magnetic.
Patent GB-619219-A (GB)
Title: Bitumen treating agent
IPC: C08K5/20
Filed: 1945-08-30
Abstract: An agent for heating bitumen to facilitate the coating of wet aggregates in the manufacture of paving compositions comprises a mixture of an amine soap and an acyl amide, the latter being preferably a soap of an acylamidoamine.  The bitumen used may be natural asphalt, petroleum still residues, tar, or the like, preferably in cutback condition.  The treating agent is prepared by treating a polyamine, e.g., ethylene diamine, propylene diamine, diethylene triamine, or triethylene tetramine, with an acid capable of forming a soap and containing 8-20 C atoms in the molecule, e.g., tall oil, peanut oil acids, oleic acid, resin acid, or naphthenic acid.  Preferably 100-500 per cent acid in excess of the amount required to combine with the polyamine is used.  The amine and acid are mixed at about 100 DEG  C., and the product is divided into two portions, one of which is heated to eliminate two molecules of water and after cooling, is mixed with the other portion.  The final product is added to the bitumen in amount between 0.5 and 2.5 per cent.  Specification 607,604 is referred to.