baber/WOPTO huggingface dataset:
Patent GB-893389-A (GB)
Title: Improvements in and relating to granular fertilizers
Inventor: WATERHOUSE PETER
IPC: C05C13/00
Filed: 1959-07-17
Abstract: Hard granules of ammonium sulphate-nitrate (equimolar proportions) are prepared in a continuous process by feeding ground ammonium sulphate and an aqueous ammonium nitrate solution in the requisite proportions together with previously prepared dry ammonium sulphate-nitrate and a minor quantity of water into a granulator while maintaining (a) the material therein at not less than 55 DEG C. and (b) the concentration of the solution and the quantity of water such that material leaving the granulator has a 2-2,5 wt. per cent moisture content, then drying the granules to below 0,1% moisture and screening to size 1,5-3,5 mm.ALSO:Hard granules of ammonium sulphate-nitrate (equivolar proportions) for use as fertilizers are prepared in a continuous process by feeding ground ammonium sulphate and an aqueous ammonium nitrate solution in the requisite proportions together with previously prepared dry ammonium sulphate-nitrate and a minor quantity of water into a granulator while maintaining (a) the material therein at not less than 55 DEG C. and (b) the concentration of the solution and the quantity of water such that material leaving the granular has a moisture content of 2-2,5% wt., then drying the granules to moisture content below 0,1% and screening to size 1,5-3,5 mm.
Patent GB-417220-A (GB)
Title: Improvements in the manufacture or treatment of artificial filaments, threads, ribbons, fabrics and like materials made from or containing organic esters of cellulose
IPC: D06M11/38
Filed: 1933-02-20
Abstract: Artificial filaments, threads, ribbons, and the like of organic esters of cellulose, are subjected to saponification by means of liquid media containing organic bases.  Suitable bases are methylamine, dimethylamine, trimethylamine, ethylamine, diethylamine propylamine, amylamine, allylamine, tetramethyl ammonium hydroxide, ethanolamines particularly triethanolamines, piperidine, and cyclohexylamine.  The base is preferably applied in aqueous media, although other, e.g. aqueous alcoholic or alcoholic, media may be employed.  With methylamine, concentrations of about 20 per cent, and temperatures of the order of 50--60 DEG  C. are preferred.  The saponifying agent may be applied by means of a bath treatment, and where the process is sufficiently rapid, the materials are passed continuously through the bath.  Threads may be passed through the bath in warp formation.  The process can be applied to the treatment of materials made from cellulose derivatives of high or low viscosity characteristics, which materials may have been made by a process involving stretching of the filaments, either during production, as for example, by the process of Specifications 340,324, 340,325, 340,326, 340,436, 340,437, 343,062, or 378,858, or subsequently to production, as is described in Specifications 323,790, [Class 2 (ii)], 370,430, and 371,461.  The filaments may have been stretched, e.g. from 200 per cent up to 500 per cent or more of their original length.  If desired, the stretching process may be followed by a shrinking process, as described in Specification 389,823.  The unsaponified stretched threads may have a tenacity of 2,5 to 3,5 or more grams per denier.  The extent of saponification varies with the object in view, and may correspond to a loss in weight of 10 per cent or less when an affinity for cotton colours is required, or may amount to complete removal of the ester groups.  The saponified filaments can be subjected to further treatments, e.g. shrinking treatments as described in Specifications 380,504, 380,505, and 389,823.  In an example, cellulose acetate yarns which have been stretched are passed in warp formation through a bath containing a 20 per cent aqueous solution of methylamine at 60 DEG  C. Specifications 207,562, 277,089, 316,521, 318,468, [all in Class 2 (ii)], and 411,094 also are referred to.
Patent GB-1411730-A (GB)
Title: Process for separating highly pure paracumylphenol
IPC: C07C37/84
Filed: 1974-06-04
Abstract: 1411730 Separation of highly pure paracumyl phenol SOC ITALIANA RESINE SIR SpA 4 June 1974 [15 June 1973] 24764/74 Heading C2C A process for separating highly pure p-cumylphenol from high-boiling bottoms obtained in the production of phenol from cumene via cumene hydroperoxide, wherein said bottoms comprise p-cumylphenol, phenol and tarry substances as relevant components, comprises the steps of : (i) submitting said bottoms to quick vaporization at a temperature not exceeding 200‹ C., at a subatmospheric pressure with a residence time under vaporization conditions not exceeding one minute, thereby separating the phenol and p-cumylphenol as a vapour phase from a liquid phase consisting essentially of the tarry substances; (ii) condensing from the vapour phase a liquid fraction comprising as major component, p-cumylphenol; (iii) and recovering p-cumylphenol from the liquid fraction by crystallization.
Patent GB-1396606-A (GB)
Title: Apparatus for treating parts and materials and for the  thorough separation of the constituents
IPC: B24B31/023
Filed: 1972-05-26
Abstract: 1396606 Tumbling OXY METAL FINISHING INTERNATIONAL SA 26 May 1972 [28 May 1971] 24861/72 Heading B3D [Also in Divisions B1-B2 C7 and F4] Apparatus for treating large solids with smaller solid particles or liquids in a variety of ways comprises a vessel divided into inner and outer zones by a part-conical or part-pyramidal screen 5 and tiltable about horizontal axis V-V<SP>1</SP>. The large solids are placed in the inner zone and retained therein by the screen, which is pervious to the liquid or smaller particles. The treatment is then performed with the vessel oriented as in Fig. 1 or Fig. 2 (not shown), and rotating or oscillating about axis O-O<SP>1</SP> and/or vibrating. Either of two covers may be fitted, cover 8 in Fig. 1 extending the outer zone by an annular space 9 but allowing large solids to be discharged from the inner zone 11 on removing lid 14 and tilting the vessel about axis V-V<SP>1</SP> (Fig. 3, not shown). Alternative cover (10) (Fig. 4, not shown), closes the inner zone only to allow the contents of the outer zone to be poured off. This separation of the materials and separate discharge may involve or be preceded by rotation of the vessel about axis O-O<SP>1</SP> to effect centrifugal straining or tumble drying of the large solids or dry screening of a solids mixture. The vessel may be spherical or tapering, and removable dome 2 enables the screen to be withdrawn. The apparatus may be washed and dried after use with or without dismantling. Applications include grinding or deburring of metal parts with abrasives, pickling, dyeing, varnishing, cleaning and drying small parts.
Patent GB-978956-A (GB)
Title: Purification of melamine
Inventor: CHRISTOFFEL IVAN
Filed: 1961-07-10
Abstract: Crude melamines produced by heating an aquo-ammono carbonic acid and containing genetic impurities which include hydroxy-triazines is purified by stripping off carbon dioxide from said crude melamine and then digesting said melamine under super-atmospheric pressure in 8 to 28% by weight aqueous ammonia at temperatures of 140 to 230 DEG C. and crystallizing the melamine therefrom, the carbon dioxide content of the aqueous ammonia/melamine not being allowed to rise above 3% by weight. The carbon dioxide may be stripped from the crude melamine by means of steam.  Suitable aquo-ammono carbon acids are urea, biuret, cyanuric acid, ammelide and ammeline.  The mother liquor remaining after crystallization of the melamine therefrom is preferably distilled to recover ammonia, cooled to crystallize ammelide and ammeline therefrom for use as aquo-ammono carbonic acid starting material, and then used to quench a hot melamine effluent foamed melamine synthesis prior to treatment as above.
Patent GB-1435495-A (GB)
Title: Oil clean-up method
IPC: E02B15/10
Filed: 1972-05-26
Abstract: 1435495 Scavenging vessels; automatic buoyancy control BRITISH PETROLEUM CO Ltd 17 May 1973 [26 May 1972] 24936/72 Headings B7A and B7M [Also in Divisions B1 and F1] A floating oil slick is trapped by a floating boom 1 (Fig. 2, not shown) and the oil picked up by a device 6 comprising a plurality of flat discs 11, radially oriented along a pitch circle and supported by floats 15-19 so as to dip into the water, the discs being rotated about their respective axes to pick up the oil which is then removed therefrom by fixed scrapers (20) and pumped in a tanker or dracone 7. Boom 1 comprises elongated air-filled tube (10) and water-filled tube (9), presenting a figure of eight section, and further air tube (41) of much smaller diameter. Tube (41) is internally ribbed and may be inflated before or during the laying of the boom in the water. The boom is laid from a barge on which it is folded zig-zag and which carries an engine driving respective pumps, which inflate tubes (9, 10) once the boom is laid, and a cylinder to inflate tube (41, Fig. 6, not shown). The free end of the boom is attached to a drogue to assist laying the boom. Either one boom is laid at right angles to the path of the slick, or two booms are layed in a V formation and secured together. The boom(s) are laid downwind of the slick and the drogues brake the drift of the boom(s). Once the slick is trapped against the boom(s) the free ends are brought together to close the circle (Fig. 1). In device 6 the discs 11 are mounted on bearings 12 and made of polyvinyl chloride. The disc peripheries have teeth engaging a worm ring 13, which is rotated to turn the discs by pinion 14 engaging teeth on its inner periphery. A device with 78 discs of 10 foot diameter can pick up 100 tons of oil per hour. Float 15 may be open at the bottom and have an automatic system (Fig. 5, not shown) which pumps air in to maintain a constant immersion of discs 11 as the oil is removed from the surface. A float controlled bleed (40, 51) is normally open to maintain pneumatic valves (33, 38) closed, but as the device sinks the bleed touches the surface and closes, causing valve (38) to open valve (33) and deliver air to the float expelling the water.
Patent GB-934975-A (GB)
Title: Apparatus for the flanging of metal drums and containers
Inventor: RIGG NORMAN
IPC: B21D51/26
Filed: 1962-06-29
Abstract: 934,975. Flanging. CROSSHALL ENGINEERING CO. Ltd. June 29, 1962, No. 24964/62. Class 83 (4). Apparatus for flanging the ends of metal drum or container bodies comprises a first series of circularly arranged forming elements adapted to fit within a drum body and to be expanded against same, a second and cooperating series of circularly arranged forming elements adapted to fit circumferentially around said drum and to be contracted there against, means for locating the drum and a fluid-  operable power cylinder for effecting radially outward and inward-operative movements of the forming elements. The apparatus comprises a base frame 10 supporting a doubleacting hydraulic or pneumatic power cylinder assembly 11 and an apertured platform 13 supported by pillars 14 and which supports two coacting series of circularly arranged sectoral forming elements 15, 16 suitably guided by keyways 17. The formers 15, 16 are slidably located upon the plate 13 by ring members 35, 37 respectively. Each outer face of the formers 15 is provided with a groove 15a and each former 16 with a complementary flange 16a. A piston-rod 18 carries an adjustable frustoconical wedge member 19 and an apertured plate 23 to which is attached a ring 20 by screws 22. The ring 20 has a coniform inner face 20a which co-operates with a series of rollers 21 carried by the formers 16. Vertical movement of the rod 18 causes the formers 15, 16 to be moved radially outwardly and inwardly under the influence of the member 19 and ring 20 respectively. The formers 15, 16 are biased in their open condition by individual extension springs 31 and a garter spring 32 respectively. In operation, the drum is located on a number of adjustable blocks 30 and the piston-rod 18 actuated vertically upwards to radially operate the formers 15, 16 to reduce the diameter of the drum and form a flange x<SP>1</SP> having a diameter less than that of the drum body. The return stroke of the rod 18 is effected automatically by a stop pin 40 contacting a return valve 41.
Patent GB-798048-A (GB)
Title: Improvements in arch and heel supports for footwear
IPC: A43B23/22
Filed: 1956-08-15
Abstract: 798,048. Boots &c. FRIEDMANN, M. Aug. 15, 1956, No. 25006/56. Class 17(2) A shank and heel unit 12 is moulded in plastic or other light weight material and is provided with a metal reinforcing stay 44 embedded in heel-supporting portion 22, shank 20 and heel tread 24 and passing therethrough. The unit is placed between the insole and outsole. In a modification, the tension surface T only is reinforced by a metal wire mesh strip located in a groove. The colour of the moulded portion may contrast with the toe and heel portions of the shoe.
Patent GB-1438184-A (GB)
Title: Method of manufacturing load-carrying elements of stabilizing  and steering components of aircraft
IPC: B64C11/26
Filed: 1973-05-25
Abstract: 1438184 Moulding hollow components N I KAMOV N N PRIOROV A F KOVALEV M A KUPFER A G SATAROV I S SHERMAN A F VAKULENKO I I KOVYRYALKIN S I STETSENKO V B GOLSTMAN and K N GUSKOV 25 May 1973 25186/73 Heading B5A Hollow load-carrying aircraft components, e.g. helicopter rotors, are made by forming blanks 12 and 13 from sheets 11, e.g. of glassfibre mat, each having a layer of adhesive applied thereto, e.g. an epoxy phenolic binder, placing the sheets on a mandrel 15 and subjecting the sheets to a preliminary compression during which the sheets adhere to each other and the blanks are shaped into an open profile, bringing together the ends of the blanks to form a closed profile with a cavity a, arranging an elastic bag (21), Fig. 9, not shown, in the cavity, placing the resultant component in a mould having an inner shape corresponding to the final shape of the component, and pressurizing the elastic bag to finally press the component into shape. The sheets are shaped on the mandrel 15 by placing a rubber band 16 therearound and enclosing the assembly in an elastic bag 17 which can be connected to vacuum in an autoclave 18. Structural components such as the balance weight 5 can be incorporated into the assembly by further layers 11. Metal blade roots (4), Fig. 1, not shown, can be secured by reinforced blanks (20), Fig. 7, not shown. Boxshaped beams and tubular spars can be made by the process, as well as hollow panels, Fig. 14, not shown.
Patent GB-533968-A (GB)
Title: Improvements in or relating to the manufacture of ceramic products
IPC: C04B33/02
Filed: 1939-09-07
Abstract: 533,968. Porcelain compositions. GARBISCH, N. S. Sept. 7, 1939, No. 25229. [Class 70] Chinaware or porcelain is formed from a mixture of clay or kaolin with finely-divided siliceous material obtained in grinding or polishing glass with sand. The material may be digested with alkali such as sodium hydrate, carbonate or silicate to remove part of the glass particles or with acid to remove particles of iron. Alternatively, iron particles may be removed by magnetic separation. Potter's flint and feldspar may be added.
Patent GB-540082-A (GB)
Title: An improved grab for working bulk cargoes and the like
IPC: B66C3/12
Filed: 1939-09-07
Abstract: 540,082. Grabs. REYNOLDS, E. Sept. 7, 1939, No. 25242. Convention date, Sept. 23, 1938. [Class 78 (iv)] A pivoted slotted lever 17 on the lead frame of a doublechain grab, which is actuated and controlled directly by the joint action of the hoisting and opening ropes, permits lowering with the buckets open. When the grab rests on the heap of material, the lever 17 falls over by gravity into the position shown in Fig. 5 in which the button 20 passes freely through the slot when the hoisting rope 19 is tensioned to close the buckets and hoist the grab. On transferring the pull to the opening rope 23 and paying out the hoisting-rope to discharge the load the lever 17 is swung about the pivot 26. In this position the button 20 can pass downwards through the slot as the buckets open, but is arrested when the hoisting-rope is re-tensioned. Thus the grab can be lowered with open buckets by paying out both ropes 19, 23 under tension until it rests on the heap, after which the cycle of operations is repeated.
Patent GB-322449-A (GB)
Title: Improvements relating to grinding wheels and similar abrasive articles
Filed: 1928-09-03
Abstract: 322,449. Brockbank, C. J. Sept. 3, 1928. Compositions containing abrasives and an elastic bond.-Grinding wheels are made by mixing the abrasive with a solution in diethylene glycol mono-ethyl ether of rubber, shellac or an artificial resin or a mixture of one or more of them, moulded in the cold and baked.
Patent GB-1425611-A (GB)
Title: Power switches
IPC: H01H33/664
Filed: 1973-05-29
Abstract: 1425611 Arcing electrode and switching contact units SPRECHER & SCHUH AG 29 May 1973 [22 June 1972] 25343/73 Heading H1N The opposed contacts 59, 63, 64 in Figs. 9 and 11 respectively of a power switch, preferably of the vacuum type, have rigidly attached thereto opposed arcing electrode assemblies 50 and 65, 66 respectively each consisting of spaced metal plates extending parallel to the direction of relative movement of the contacts, the edges of the plates taking the roots of the arc until extinction on opposed edges, the spaces between the plates of each electrode assembly being not less than the thickness of the plates. The contacts may be annular with radial electrode assembly plates (Figs. 7. and 8 not shown) or may comprise U-shaped members defining separated contact surfaces with intermediately disposed parallel plates (Fig. 9). The Fig. 11 embodiment has contacts shaped to provide a loop path for current and the arcing electrodes (which overlap when the switch is closed) have a divergent shape which extends the current loop when the switch contacts are opened.  Punched protuberances 51, Figs. 9, and 67, Fig 11, maintain the spacing of the plates. The vacuum switch with stationary arcing electrodes disclosed in Specification 1,363,010 is repeated with reference to Figures 1-6 which are common to both Specifications.
Patent GB-153165-A (GB)
Title: Improvements in or relating to box kites
IPC: B64C31/06
Filed: 1919-10-16
Abstract: 153,165. Gibson, W. R. Oct. 16, 1919. Kites.-In a boxkite having disconnectible parts, the box members 5 and 6 are in the form of open-ended cylinders composed of circular hoops 1, 2, 3, 4 connected together in pairs by fabric. The bars 8, 9, 10, 11 are connected to the hoops by wire loops 12, which pass through slots 7 and are then turned through a rightangle. Two triangular wing members 13 and 14 are attached to diametrically opposite loops 12 and are rigidly supported apart by the wind-strut 17, which has its ends in pockets 18, 19. A rotatable member, composed of four circular wind vanes 21, attached to a circular wooden cylinder 22 and rotatable on the axle 23, adds to the stability of the kite.
Patent GB-298153-A (GB)
IPC: C10C1/04
Filed: 1928-09-06
Abstract: 298,153. Barrett Co., (Assignees of Miller, S. P.). Oct. 4, 1927, [Convention date]. Condensing processes; materials for purifying; pitch.-Pitch is recovered from hot coke oven gases by cooling them to such a temperature that particles of pitch of a desired composition are formed, and scrubbing the gases at such temperature with hot pitch of similar composition to that carried in suspension in the gases. The gases are subsequently cooled to recover the oils directly therefrom. The gases pass from the ovens 5 through pipes 7 to a main 6 in which they are cooled by being sprayed by nozzles 10 with ammoniacal liquor, before entering a scrubber 13 in which they are sprayed with hot pitch through nozzles 20. Excess pitch collects in a vessel 15 with outlet 16, and is withdrawn from vessel 15 and scrubber 13 through pipes 17, 17<1> and recirculated by pumps 18, 18' through a heat exchanger 19 to the spraying nozzles 20. Pitch from another source may be supplied through pipe 21. The gases pass by a - main 24 to condensers 25, 26 having water or ammonia liquor sprays, the condensates passing to a vessel 28 having overflows to liquor and oil containers 29, 30. The condensates from the main 6 pass to a vessel 39 leading to liquor and oil containers 36, 40 and the liquor is fed by pipes 35, 37 to a tank 12 from which it is pumped to the nozzles 10. Oils from the tank 30 and liquor from an outside source may be supplied to the tank 12 by pipes 34, 33 respectively.
Patent GB-481948-A (GB)
Title: Improvements in and relating to photo-electric image converters
IPC: H01J31/52
Filed: 1936-09-21
Abstract: 481,948. Cathode-ray tubes. KESSLER, J. Sept. 21, 1936, No. 25650. [Class 39 (i)] A cathode-ray tube comprises a block 19 of insulated metallic conductors on the ends 21 of which an invisible image is projected and the other ends of which 22 are scanned by an electron beam to produce a visible image on a fluorescent screen 25. The ends 22 may lie on a spherical surface and the conductors may consist of aluminium or copper. Fluorescent material such as willemite may be deposited on the end of the bulb and a positive potential may be applied thereto through a ring 26, or it may be deposited upon a plate maintained at a positive potential. The invisible image is projected through a quartz lens 28 and the visible image may be viewed directly or with the aid of a mirror arranged within the tube and a lens formed in the tube wall. The electron beam is arranged so that it does not fall on more than one end at any instant. A filling of argon at a few mms. may be provided.
Patent GB-722382-A (GB)
Title: An automatic tap or gas-control device
IPC: F24C3/12
Filed: 1952-10-14
Abstract: 722,382. Valves. HEMMERDINGER, L. Oct. 14, 1952, No. 25753/52. Class 135. An automatic gas tap for cookers in which a hollow cylindrical inner member is provided with a closed end relatively rotatable in a mating outer tubular member to bring ports therein into register and an outer sleeve surrounding the overlapping parts of the members to provide communication from one to the other. The weight of a utensil on a gas cooker depresses a spring-loaded plunger 24 and through a flexible cable 22 rotates an injector nozzle 11 having a radially ported bell 12 acting as a valve closure member and which slidingly rotates on a nozzle 2, correspondingly ported at 4, on the connection 1 for a gas pipe. In the closed position of the valve gas may pass via conduits 5, 10, perforations 13 in the bell and through the injector to a pilot burner. A spring 15 presses a coned sealing surface 16 on the bell on to a coned surface 17 on a cap 8 covering both the bell and the nozzle for conducting gas from the one nozzle to the other in the open position. Specification 666,966 is referred to.