baber/WOPTO huggingface dataset:
Patent GB-1281747-A (GB)
Title: Radio frequency generator circuits and components therefor
IPC: H05B6/04
Filed: 1969-08-19
Abstract: 1281747 Valve amplifying circuits INTERNATIONAL PLASMA CORP 19 Aug 1969 [19 Aug 1968] 41241/69 Heading H3W [Also in Division H1] In a radio-frequency generator 11, Fig. 2, feeding a load via a tuned pi-network comprising variable capacitor 23, inductor 24, and a bank of capacitors 26a and a line 27, the losses in the inductor 24 and capacitors 26a are made sufficient to prevent excessive voltages arising on the valve if the loading varies or disappears. The valve 11 is coupled to the tuned circuit via choke 17 and capacitor network 22a. The grid of the valve is driven with R.F. applied to terminal 41, Fig. 1, via a tapped inductor 43 which is tuned by means of capacitor 44, the tapping points being chosen to match the driving impedance and input impedance of the valve, which is loaded down by means of resistors 42. A variable capacitor 46 in series with inductor 43 forms with capacitors 53, 54 a neutralizing circuit. In a construction, the capacitor 53 comprises an L-shaped metal strip 53a, Fig. 4, adjacent extension 58 of the anode of the valve 11. The container for the arrangement comprises two compartments, separated by a partition in which is a window 67 of insulating material through which passes the lead 66 from the anode 58 of valve 11 to one plate of the coupling capacitor network; this comprises three generally circular plates 226 coupled together by pairs of tubular capacitors 22a.
Patent GB-842255-A (GB)
Title: Caisson for submerged pipelines
IPC: B63C11/44
Filed: 1958-12-23
Abstract: 842,255. Caissons. ESSO RESEARCH & ENGINEERING CO. Dec. 23,1958 [March 10, 1958], No. 41458/58. Class 68(2). A caisson for providing dry working access to a submerged pipe line comprises an upper base section 9 in the form of a truncated conical shell surmounted by a cylindrical shell and a lower base section constructed in halves 19 and 20, which are each attached to the upper base section by a pair of hinges. In the closed position (shown in solid lines in Fig. 1) the halves form an open-topped bowl, the top inside diameter of which is slightly larger than the outside diameter of the lower edge of the upper base section 9. A flexible collar 29 forms a water-tight joint between the upper and lower sections and the joint faces of the halves 19 and 20 close on to a sealing strip 43. Two piston and cylinder assemblies 15 and 16 are provided, pivoted at 17 and 18 to lugs provided on the cylindrical shell and pivoted at 33 and 34 to lugs on the hinged lower base halves and provide the power to move the halves to the open position shown in dotted lines in Fig. 1. Each half 19 and 20 of the lower base section has semi-circular apertures which co-operate when the halves are closed to form circular apertures which provide entrance for horizontal or vertical pipes. The apertures are fitted with adapters to suit pipes of various diameters and contain a collar of sealing material. Horizontally opposite apertures allow a pipe to pass right through the caisson and a single aperture in the bottom accommodates vertical pipes. In use, divers clear away silt from the section of pipe to be worked on, the caisson is lowered over the pipe with the lower base halves open and the halves closed on to the pipe. As many sections as necessary are added to the cylindrical shell to bring the top above the water and the caisson is pumped dry. A flooding 49 which can be operated from the surface is provided, and a band 45,46 is provided on which ballast weights 48 are hung.
Patent GB-1005847-A (GB)
Title: Improvements in packaging of self-dischargeable wire
Inventor: GILMORE WILLIAM JOHN
IPC: B21C47/00
Filed: 1963-10-21
Abstract: 1,005,847. Package. AMERICAN CHAIN & CABLE CO. Inc. Oct. 21, 1963, No. 41489/63. Heading B8M. [Also in Divisions B3, E1, F2 and F3] A package of self-dischargeable wire, e.g. for use as a throwing line, helically wrapped into a multi-layer cylindrical winding held together by releasable restraining means is characterized in that said wire is flat and possesses elastic energy tending forcibly to produce a longitudinal twist about an axis extending within the flat wire so that the faces of the wire define helical surfaces, said wire producing the twist in itself progressively from one end to the other upon release of the restraining means, whereby the wire hurls itself rapidly outwardly under the cumulative impulse of its own released energy. The package is made (see Division B3) from a continuous strip 10 of flat high carbon spring steel, e.g. 0À25 inches wide cut from 0À025 inches thick rolled stock, in a quenched and tempered condition which may be provided with a serrated edge. The trailing end of the wire is anchored to the winding or an outer wrapping is applied about the package. When in use the package is held with its axis in the desired direction of discharge and the core collapsed to remove the inner restraining force on the inside circumference of the winding thus releasing the leading end of the flat wire which forcibly and instantaneously snaps itself into its inherent sixinch twist outwardly from the package followed by the remaining convolutions which throw the wire at least 80 feet at speeds of about 40 m.p.h. If the wire meets an obstacle within ts maximum range the flat wire will pile up to form an entanglement 19. In a modification two continuous strips 31, 32 having spring steel elements 42, with or without barbs formed on the sides of their pointed portions, spot welded to the inner faces thereof in staggered relationship are superimposed twisted together and coiled to form a package, the pointed portions of the elements being resiliently flattended during the operation (Fig. 7) alternatively the pointed portions are pressed up out of the strip. If more than two strips are superimposed the inner strips may have pointed elements on both sides thereof. Barbed or serrated edges may be produced along one or both edges of at least one of the strips.
Patent GB-1449004-A (GB)
Title: Method of forming hollow cylindrical bodies eg pipes and hollow cylindrical bodies produced by the method
IPC: B29C41/22
Filed: 1973-09-04
Abstract: 1449004 Centrifugally moulding hollow articles SOFFRA ETABS 4 Sept 1973 [13 Sept 1972] 41533/73 Heading B5A [Also in Divisions E1-E2 and F2] A hollow cylindrical article is formed by introducing a resin into a mould along its length while the mould is rotating, to form a first cylindrical hollow shell 3; introducing a foamable resin into the mould along its length to form a foamed second cylindrical hollow shell 5; forming annular or helical grooves 6a in the foamed layer 5 to expose the first shell 3; filling each groove 6a with thermosetting resin and reinforcing material; introducing a resin into the mould to form a third cylindrical hollow shell 12 bonded to the groove filling 6a; and removing the article from the mould, to use as a pipe, tank, silo, or hollow building element. Layers 3 and 12 comprise a polyester resin embedding cut or continuous helical fibres; layer 5 is a foamed polyester or polyurethane resin. The grooves 6a are reinforced with cut or continuous glass or metal fibres. Additional layers 4, 11 of a thermosetting resin including pumice, expanded clay or glass, slate or sand, and external and internal gel coats 7, 13 can be provided. The mould is arranged to rotate about a horizontal axis, and the layers applied by a head making several passes to pour or spray the material. The foamed layer 5 is ground and the grooves 6a cut in.
Patent GB-1186041-A (GB)
Title: Flame Spray Gun
IPC: B05B7/20
Filed: 1967-09-13
Abstract: 1,186,041. Spray-producers. METCO Inc. 13 Sept., 1967 [14 Nov., 1966], No. 41783/67. Heading B2F. A powder-fed flame spray gun comprises a mixing plug body 17 defining a central powder supply conduit 18, separate fuel gas. and oxidizing gas passages 12 and 13 respectively leading to an annular mixing chamber 25 surrounding the conduit 18, a baffle 34 located in a chamber 33 downstream of the chamber 25, and a burner nozzle having a ring of jets 40. The fuel gas and the oxidizing gas reach the mixing chamber 25 via passages 26 and 27 respectively and by further passages (31) Fig. 3 (not shown) which are aligned with passages (32) leading from the chamber 25 to the chamber 33. The chamber 25 is defined between the plug 17 and a sleeve 24 which is fluted on its external surface, Fig. 5 (not shown). The powder is transported through the conduit 18 by a gas selected using the apparatus disclosed in Specification 1,186,042 and is discharged through diverging holes 39. The baffle 34 is formed by a washer and causes complete mixing of the fuel gas and the oxidizing gas before they are discharged through outlets 40. Air for cooling &c. the spray is discharged from a plurality of converging jets 42 defined by a member 15. The jets 42 may be made diverging by reversing the member 15. The powder is fed from a cylindrical pow der container (2) Fig. 1 (not shown) to a powder feed chamber (10) via a pinch-type shut-off valve (7) controlled by a trigger (9).
Patent GB-1429250-A (GB)
Title: Magnetic materials
IPC: G11B5/706
Filed: 1973-09-05
Abstract: 1429250 Cobalt substituted ferric oxide MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 5 Sept 1973 [7 Sept 1972 (6) 20 Sept 1972 (2)] 41838/73 Headings C1J and C1A Magnetic material consisting mainly of cobalt substituted γ-ferric oxide is prepared by dispersing 75À05-99À075 mol per cent of vercular goetrite powder in an aqueous solution of 0À425 to 9À95 mol per cent of a cobalt compound, precipitating the cobalt ions as cobalt hydroxide, filtering the mixture of cobalt hydroxide and goetrite, adding 0À5 to 15 mol per cent of at least one of NH 4 Cl, CuCl, LiCl, PbCl 2 , SnCl 2 , BuCl 2 , CdCl 2 , SrCl 2  and ICl 3  or the corresponding bromine, iodine or fluorine compounds to the mixture, heating at 300- 600‹ C. in a reducing atmosphere and oxidizing in air or oxygen at 150‹ to 350‹ C. The cobalt compound may be CoSO 4 , CoCl 2 , Co(NO 3 ) 2 , or Co(CH 3 COO) 2 . Numerous examples are given. Comparative examples describe the use of chlorides of Ag, K, Na, Pd, Ni, Zn, Ca, Mg, Mn, Y, Gd and In.
Patent GB-1361891-A (GB)
Title: Telephone actuating mechanism
IPC: H04M1/02
Filed: 1972-09-08
Abstract: 1361891 Sets AMERICAN TELECOMMUNICATIONS CORP 14 Aug 1972 [3 Jan 1972] 37751/72 Heading H4J A candlestick telephone instrument (Fig. 1, not shown), has an electromechanical switching device 23 (Fig. 2) in the base, together with actuating mechanism in the column 32 for actuating the switching device 32 in response to up and down movement of the hook 12. A pedestal base housing 18 (Figs. 2, 9) his an opening 24 for receiving a dial mechanism (11) Fig. 1 (not shown). The tubular column 32 fits into an adapter 20 fitting into a circular opening 27 in the base housing 18. A top cap 50 is supported at the top end of the column 32 and carries a transmitter (14), Fig. 1 (not shown). A top insert 42 is positioned within the upper end of the column 32 and has an inclined lower surface 46 with a central opening 44 and a depending portion 47 having a supporting notch 48. A hook 12 has a generally rectangular end 60 located within the column 32. The end 60 has a central aperture 59 and its outer edge is pivotally supported in notch 48. A metal tube 62 extends through the top cap 50, the top insert 42, the central aperture 59, through the column 32 into the base housing 18. An actuator sleeve 68 is slidably supported on the tube 62. The upper end of the actuator sleeve 68 has a projection 71 fitting into a recess 72 on the underside of the hook 12. A compression spring 75 has its upper end contacting an inner shoulder 74 on the sleeve 68. A washer 76 on the end of the tube 62 is retained by the base housing 18 and is contacted by the lower end of the spring 75. The washer 76 has a cut-out 78 and the lower end of the sleeve 68 has a projection 79 extending through the cut-out 78. In the on-hook condition, as shown in Fig. 2, the switching device 23 is actuated by projection 79 contacting a face 87 of arm 83 against the action of a spring 88. In the off-hook condition (Fig. 8, not shown) spring 75 urges the sleeve 68 upwardly so that projection 79 is out of contact with face 87 and spring 88 is relieved to change switching device 23 to its other condition.
Patent GB-1161361-A (GB)
Title: Carpet Construction
Inventor: KRUCE BENJAMIN ANTHONY
IPC: D04H11/08
Filed: 1966-09-20
Abstract: 1,161,361. Laminated carpet. B. A. KRUCE. 20 Sept., 1966 [29 Sept., 1965], No. 41933/66. Heading B5N. A method of making carpet comprises assembling in parallel side-by-side relation a plurality of elongate elements 12 of rubbery base material having filamentary cords embedded therein, the upper end portions of the cords projecting upwardly from the base to form a pile; coating the bottom surfaces of the elements with an adhesive; and pressing the coated bottom surfaces on to a woven backing sheet 52 to form a unitary carpet strip. In one apparatus for performing the method, Fig. 1, elements 12, which have been formed by cutting pneumatic tire casing circularly or spirally into strips, abrading one face of such strips in order to remove rubbery material and expose the end portions of reinforcing cords embedded therein, and joining such strips end to end by staples, are fed from reels 11 to a table 22 on to which they are guided into closely spaced parallel relationship by upstanding pins at one end and convergent walls at the sides of the table. The bottom surfaces of the elements are coated with adhesive, e.g. neoprene, by a roller 43 and the elements are fed via heaters 46 to the nip of pressure rollers 53, 54 where they are bonded to a backing sheet 52 of woven fibreglass, which may have been pretreated with isocyanate to improve the bonding. The carpet strip so formed is cut longitudinally at 60, cooled by air from a fan 62 and cut transversely into carpet tiles by a rotatable knife 70. The elements 12 may be of natural or synthetic rubber, and include cotton, nylon or rayon reinforcing cords. Cords of non-hygroscopic material are preferred and the backing sheet also has this property. If desired the carpet tiles formed are secured to a concrete floor by a permeable adhesive, such as neoprene which contains ammoniated carbonate as a decomposition agent, the backing sheet also being permeable to allow the floor to "breathe".
Patent GB-1108760-A (GB)
Title: Electrolysis of salt solutions
IPC: C25B1/36
Filed: 1966-09-20
Abstract: A method of electrolyzing brine in a cell using a mercury cathode comprises mixing part of the dilute salt solution obtained at the outflow end of the cell with saturated alkaline solution from which impurities have been removed, and recirculating said mixture to the inlet end of the electrolytic cell.  The ratio of the quantities of alkaline salt solution and spent dilute salt solution, which is acid, forming said mixture may be selected so that the pH of the mixture is approximately 7.
Patent GB-1061067-A (GB)
Title: Construction of roads and associated surfaces
Inventor: DOLPHIN JOHN ROBERT VERNON
IPC: E01C1/00
Filed: 1964-10-16
Abstract: 1,061,067. Prefabricated multilevel roadways. T. I. (GROUP SERVICES) Ltd. Oct. 29, 1965 [Oct. 16, 1964], No. 42218/64. Heading E1G. A multilevel thoroughfare is constructed on an existing roadway by the use of prefabricated units having pedestrian ways P, the units are mounted back to back on a wheeled base J for transport to the site, moved apart on the base J to leave a vehicle way between and the base finally grouted and concreted to the existing road surface. Pedestrian bridgeways may be added and provision may be made in the base J for service conduits.
Patent GB-1030499-A (GB)
Title: A building and flashing unit for pipes
IPC: E04D13/147
Filed: 1961-11-25
Abstract: 1,030,499. Pipe connections. F. D. BRINDLE. Feb. 22, 1963 [Nov. 25, 1961], No. 42244/61. Heading F2G.  A preformed flashing unit of polyvinyl chloride for a vent pipe comprises a plate a and an open-ended shell b having an axis inclined to the plane of the plate, the dimensions of the shell decreasing towards the circular rim d thereof. A bead e indicates the point at which the end of the shell is removed for adaption of the unit to a larger size pipe.
Patent GB-949461-A (GB)
Title: Inclined disc-type centrifugal pumps
IPC: B02C19/00
Filed: 1959-12-14
Abstract: 949,461. Cutting-tools; turning. G. NEIDL. Dec. 14, 1959 [Dec. 29, 1958; Aug. 5, 1959], No. 42369/59. Headings B3B and B3T. [Also in Divisions B2 and F1] A pump impeller comprises a flat plate 1<SP>1</SP>, Fig. 2, mounted obliquely on a shaft 4<SP>1</SP> so as to execute a swashplate motion when the shaft is rotated. Teeth are formed in the periphery of the impeller by mounting the shaft 4<SP>1</SP> in a lathe chuck 5<SP>1</SP> and cutting successive pairs of grooves 9<SP>1</SP> in the arcuate edges 7<SP>1</SP>, 81 by a tool 6<SP>1</SP>. Similarly, pairs of grooves such as 13<SP>1</SP> are cut in the flat end edges by a tool 12<SP>1</SP>. The pump casing is formed with annular grooves engaged by the teeth on the impeller. Two sections 116, 117, Fig. 11, of a four-section pump casing are shown attached to a lathe faceplate 123<SP>1</SP>. The cutting tool 124<SP>1</SP> shown in Fig. 13 is used to cut annular grooves 113 one at a time, the tool being indexed in either direction 126<SP>1</SP> between each cut. Alternatively, the tool 127<SP>1</SP>, Fig. 12, may be used to cut all the grooves 113 simultaneously, but in this case some of the grooves will be incomplete or absent, necessitating a further cutting operation. Specification 949,463 is referred to.
Patent GB-1313079-A (GB)
Title: Stabilization of soft drinks
IPC: A23L33/15
Filed: 1971-09-13
Abstract: 1313079 Stabilized soft drink MERK & CO Inc 13 Sept 1971 [18 Sept 1970] 42622/71 Heading A2D  A soft drink contains a food colour and or vitamin C and an amount of tartrazine sufficient to stabilize the vitamin C and exert a protective effect on the food colour. The tartrazine may be added along with vitamin C and/or a beverage dye to flavoured water to constitute a beverage. Examples illustrate the above in respect of grape juice concentrate, punch, and orange juice preparation.
Patent GB-1350717-A (GB)
Title: Citric acid
IPC: A23L5/10
Filed: 1972-09-18
Abstract: 1350717 Citric acid MONTECATINI EDISON SpA 18 Sept 1972 [20 Sept 1971] 43109/72 Heading C2C Citric acid is prepared by reacting acetone with carbon dioxide at from 0 to 60 C. in a dipolar aprotic medium and with at least 4 mols. of a phenate per mol. of acetone, and reacting the resultant 3-keto-glutarate at from 0 to 10 C. with excess hydrogen cyanide, and hydrolysing the resultant cyanhydrin with excess sulphuric acid. The medium may be dimethylformamide, N-methyl-pyrrolidone or dimethyl sulphoxide. The product which may contain citramalic acid, may be separated by selective precipitation as a salt of calcium, barium or cadmium.
Patent GB-1529578-A (GB)
Title: Chemically haemoglobin compounds and a process for the production thereof
IPC: A61K35/18
Filed: 1975-10-21
Abstract: 1529578 Preparation of dials and suberic acid dichloride BIOTEST-SERUM-INSTITUT GmbH 21 Oct 1975 [21 Oct 1974] 43122/75 Heading C2 [Also in Divisions A5 and C3] Suberic acid dichloride is prepared by the action of thionylchloride on suberic acid. References are provided to the preparation of: propanedial from malondialdehyde bis(diethylacetal), butanedial from 2,5-diethoxytetrahydrofuran, hexanedial from adipic acid dichloride, octanedial from suberic acid dichloride.
Patent GB-1432078-A (GB)
Title: Production of cold soluble tea concentrates and powders
IPC: A23F3/20
Filed: 1974-10-04
Abstract: 1432078 Tea concentrate R L WICKREMASINGHE 4 Oct 1974 [12 Oct 1973] 43200/ 74 Heading A2B  A tea concentrate is prepared by forming an aqueous solution of soluble solids of tea from which are removed high molecular wt. non-phenolic constituents of the tea cream, whilst retaining the low mol. wt. constituents and evaporating the solution to a syrup or dry powder. The high molecular weight phenolic constituents are preferably removed by gel filtration through a gel of polymerised dextran or polyacrylamide, adsorption chromotography, reverse osmosis or ultrafiltration.
Patent GB-975530-A (GB)
Title: Improvements relating to internal combustion engines
IPC: F02B13/00
Filed: 1962-11-16
Abstract: 975,530. Fuel injection systems. GES FUR LINDES EISMASCHINEN A.G. Nov. 16 1962 [Nov. 16, 1961; May 23, 1962; Aug. 24, 1962], No. 43406/62. Heading FIB. In an engine in which fuel from an inlet pipe 9 is sucked into a storage chamber 4, connected to the main combustion chamber by a duct 10, and on the compression stroke is forced through a duct 5 into the transfer flange 3 or auxiliary chamber 2, at least two of the ducts 5, 6, 9 are arranged substantially in line. In Fig. 1 the duct 6 is formed in an insert 7 fitted in a bore coaxial with the duct 5 and the inlet pipe 9 is tangential to the storage chamber 4. The upper end of the insert 7 is frusto-conical to prevent fuel flowing down the bore 6. In a modification the duct 6 is formed by an annular space around the insert 7 which has a narrower diameter elongation on its upper end. In Fig. 3 the fuel inlet 33 is coaxial with the delivery duct 36 which has a helical groove 35 to cause shorting of the fuel. The tubes 25, 34, 32, may be formed of steel, ceramic, or metal-ceramic, and the end of the tube 34 may be lined with a catalyst to facilitate ignition. A throttle member 30 prevents fuel flowing downwards through duct 26. In further modifications the insert 25 may be spring-loaded, or actuated mechanically, so as to slide inwards on the compression stroke to displace fuel from the chamber 24, or an insert may be adjustable to vary the size of the space 24. The ducts 5, 6, Fig. 1, may alternatively be formed by flat slots formed between the cylinder head and the port 10 which may be adjustably mounted to permit adjustment of the width of the slot.
Patent GB-1392778-A (GB)
Title: Butyl polyglycosides
IPC: C09K23/56
Filed: 1973-09-17
Abstract: 1392778 Butyl polyglycosides ICI UNITED STATES Inc 17 Sept 1973 [15 Dec 1972] 43488/73 Heading C2C The invention comprises butyl polyglycosides containing an average of 1À1 to 4 monosaccharide units per molecule and their preparation by refluxing a mixture of butanol and a monosaccharide or a compound hydrolysable thereto in the initial molar ratio 1 : 1 to 25 : 1 in the presence of an acid catalyst and removing butanol to reduce the molar ratio to 0À3 : 1 to 20 :1.
Patent GB-1437326-A (GB)
Title: Transfer materials
IPC: B44C1/16
Filed: 1972-09-20
Abstract: 1437326 Decalcomanias LETRASET INTERNATIONAL Ltd 12 Sept 1973 [20 Sept 1972] 43608/72 Heading B6C In a decalcomania comprising a layer of adhesive over ink indicia on a temporary support or ink indicia on a support film transferable with the indicia the ink indicia and/or the support film comprises a material which includes epoxy polymer which has been formed in situ on the temporary support. The adhesive may be pressure sensitive and a support film may be either on one side or both sides of the indicia.