baber/WOPTO huggingface dataset:
Patent GB-644924-A (GB)
Title: Improvements in and relating to the production of sulphuric acid
Inventor: EDGE HERBERT ALLAN
IPC: C01B17/60
Filed: 1947-10-03
Abstract: Sulphuric acid is produced by bringing a gaseous mixture containing sulphur dioxide, obtained say by calcining anhydrite, into contact, continuously or batchwise, with an aqueous solution containing ammonium sulphite and ammonium bisulphite, recovering the adsorbed sulphur dioxide by treating the solution with nitric acid at normal temperatures, and subsequently passing the sulphur dioxide with air or oxygen to a contact sulphuric acid process. The pH of the ammonium sulphite-ammonium bisulphite solution is maintained at 4.9-5.6 by continuous or intermittent addition of ammonia, the concentration in terms of the molecular ratio SO2 : NH3 : H2O being between 1 : 1.15 : 3.1 and 1 : 1.3 : 5.  Not more than 80 per cent in excess of that stoichiometrically required of say 35-65 per cent nitric acid is added with agitation, or ammonium nitrate solution from the process may be mixed with the acid before or during addition.  Any sulphate in the resulting liquor may be precipitated by adding an alkaline-earth metal salt such as a nitrate and crystalline ammonium nitrate may be recovered by evaporating the liquor.  For continuous operation two absorption towers may be arranged in series with respect to gas flow and in parallel with respect to solution flow.
Patent GB-275825-A (GB)
Title: Improvements in cooling means for containers for liquids, particularly for transformer casings
IPC: H01F27/02
Filed: 1926-10-25
Abstract: 275,825. Bastin, L. A. M. Oct. 25, 1926. Tanks and other stationary containers with radiator elements. - Electric transformer tanks and other liquid containers have radiating elements in the form of vertical hollow members d closed at their bases adjacent the plane walls a of the tank and welded to the tank solely around the edges of the communicating openings b, e, and c, f. The members d may have hollow ribs or branches projecting from the sides to increase the cooling-effect.
Patent GB-693637-A (GB)
Title: Improvements in pipe couplings
Inventor: WINBY LEWIS PHILLIPS
IPC: F16L19/04
Filed: 1950-11-02
Abstract: 693,637. Pipe joints. HIGH - PRESSURE COMPONENTS, Ltd. Oct. 4, 1951 [Nov. 2, 1950]. No. 26777/50. Class 99 (i). In a joint in which a flared pipe end 3 is clamped between conical surfaces of a spigot 4 and a coupling nut 2, a split sleeve 1 being interposed between the pipe and nut, the sleeve has a cylindrical part extending beyond the nut and having an annular recess housing a rubber ring 5 which embraces the pipe to damp out vibrations. The ring may be slit to correspond with slits in the sleeve, and may be bonded into the recess. The spigot 4 may have a cylindrical extension 8 coterminous with the sleeve. Specification 607,112 is referred to.
Patent GB-1106027-A (GB)
Title: A bottom supported vapor generator
IPC: F22B37/24
Filed: 1966-06-15
Abstract: 1,106,027. Water tube boilers. COMBUSTION ENGINEERING Inc. 15 June, 1966 [28 July, 1965], No. 26786/66. Heading F4A. A bottom supported water tube boiler, fired by solid, liquid, gaseous or pulverized fuel comprises a tube lined furnace chamber 14, leading to a boiler tube bank 12 extending between upper and lower drums 26, 28 respectively. From the boiler bank 12 the gas is exhausted through a tube lined rear pass 54 containing an economizer 58, to outlet 56. The furnace chamber side walls are formed by upright gas-tight welded tubes extending between lower and upper side wall headers 34, 38 respectively whilst the furnace chamber floor 20, front wall 22 and roof 24 are all formed from continuous C-shaped tubes gas tightly welded together and extending between a lower rear wall header 36 which with the lower side wall headers 34 forms a U-shaped header unit, and the upper drum 26. The rear wall 18 of the furnace chamber is defined by further tubes extending between lower rear header 36 and upper and lower drums 26, 28, the tubes forming a nose baffle 42 to protect superheater 44 from radiant heat from furnace chamber 14, whilst those tubes which extend to the upper drum 26 form a screen 46 in front of the boiler bank 12. The rear wall 50 of the rear gas pass 54 is also lined with vapour generating tubes extending between the lower rear wall header 36 and the upper drum 26. The boiler bank 12 and the drums 26, 28 are mainly supported by spaced downcomer tubes 48 extending between the lower drum 28 and the lower rear wall header 36, and partly by the rear wall 50 of gas pass 54. The enclosure of the downcomer tubes 48 by the rear gas pass 54 minimises thermal stresses due to expansion, particularly on start up of the boiler. The lower rear wall header 36 is itself fixedly supported by mountings 62 on pedestal 63, whilst the side wall headers 34 are slidably engaged by mountings 66. The rear wall 50 is supported through gussets 64, and slidable bearing plates 67 on structural members 65.
Patent GB-1357141-A (GB)
Title: Gas flow control device
IPC: F16K35/00
Filed: 1970-06-03
Abstract: 1357141 Valves UNITED GAS INDUSTRIES Ltd 3 June 1971 [3 June 1970] 26803/70 Heading F2V The flow of gas to an appliance is controlled by a plurality of valves 23, 24, 25 and 26 each movable between a closed and an open position by an associated operating member 40, 41, 42, 43 whereby a plurality of discrete rates of flow to the appliance may be selected. The valve 23 is operated by the member 40 and controls communication between the gas supply and a manifold 14, apertures 32 providing a lower rate of flow into the manifold when the valve is in engagement with its seat 19. The valves 24 and 26 are operated by members 41 and 43 and control flow from the manifold to two separate outlets leading to a duplex burner while the valve 25 is operated by the member 42 and controls an ignition device. When the member 42 is depressed a bar 47 engages shoulders on the members 41, 43 which are thus moved to open both valves for the burner. A locking member 49 is simultaneously moved to the left by a biasing spring 52 until tongues 57, 58 engage slots in the members 41, 43 to hold the latter in the open position after the ignition device has been released. The member 49 is moved further to the left by its spring bias until a further tongue 59 engages a slot in the operating member 40 after the latter has been depressed to open the valve 23 and provide a boosted gas flow to the burners. Release members 65, 70 and 74 having slots to engage inclined portions 66, 73 and 75 on the locking member displace the latter to the right when depressed, the member 65 producing only sufficient displacement to release the tongue 59, the member 70 sufficient displacement to release the tongues 58 and 59, and the member 74 sufficient displacement to release all of the tongues.
Patent GB-1327681-A (GB)
Title: Process for the preparation of magnetic developer powders
IPC: H01F1/06
Filed: 1971-04-19
Abstract: 1327681 Electro-photography STAMICARBON NV 19 April 1971 [2 April 1970] 26819/71 Heading G2H A developer powder which may be transferred magnetically comprises porous inorganic carrier material loaded with 5-25% of ferromagnetic material and coated with thermoplastic material. The carrier material may be silica, alumina, titania, zirconia, magnesia, or a silicate. Silica, alumina or titania may be formed by flame hydrolysis. Iron and cobalt may be precipitated on the carrier material from a mixed solution. The thermoplastic material may be petroleum wax, polyethylene, or ethylene/vinyl acetate copolymer. A dispersion of the loaded carrier material in a melt or solution of the thermoplastic material may be atomized. The particle size of the developer powder may be 1-100 microns.
Patent GB-413526-A (GB)
Title: Improvements in the production of magnetic alloy powders and magnetic cores therefrom
IPC: B22F9/22
Filed: 1933-09-29
Abstract: Magnetic alloy powder, particularly suitable for making dust cores of loading coils for use at speech or carrier frequencies, and of radio coils, is made by the reduction of mixed crystals which are crystallized from solutions of isomorphous salts of suitable metals. Mixed crystals of iron and nickel chlorides are prepared by dissolving iron in hydrochloric acid, adding crystals of nickel chloride, and slowly evaporating to dryness.  The mixed crystals are dehydrated and reduced to metal in hydrogen.  Small quantities of other elements such as cobalt may be included in the alloy powder by including in the crystals an isomorphous salt of the further element. Insulated dust cores are prepared by adding to the powder a solution of cellulose acetate in acetone, mixing, slowly heating during stirring, cooling, and finally pressing at room temperature.
Patent GB-344463-A (GB)
Title: Improvements relating to the manufacture of carpets and other pile fabrics having anuncut pile
IPC: D03D39/00
Filed: 1929-09-04
Abstract: 344,463. Pile fabrics. STRAUB, G., 11, Snippelingsdijk, Deventer, Holland. Sept. 4, 1929, No. 26855. Convention date, Oct. 3, 1928. [Class 142 (iv).] Carpets and other pile fabrics provided with uncut pile are woven with two or more weft'layers and have weft threads 4, 5 formed on their surfaces with uncut loops projecting in helical form bound by binding-threads 7 so spaced as to be embedded in the helices between the loops, thus giving the fabric the outward appearance of a Brussels carpet &c. The warp threads may be so shed as to cause different looped wefts to appear at intervals on the surface of the fabric, a figured or unfigured onesided or a two-sided reversible fabric being thus produced. The looped wefts may be in the raw, bleached or coloured condition. Several looped wefts 4, 5 of different colours, but each of the same colour throughout, may be used, and stuffing warps 6 be so shed as to cause different coloured wefts to appear at intervals on each surface to form a multicolour pattern effect. A modification is described wherein certain of the looped wefts are at times hidden in the body of the fabric. Chenille.-The looped wefts are formed by twisting a pile thread of wool, cow-hair, &c. around one or more stationary or slower moving core-threads of cotton. The Specification as open to inspection under Sect. 91 (3) (a) describes the manufacture of a looped thread for weaving from a single untwisted woollen thread 9, Fig. 6 (Cancelled), engaging a rapidly rotating cylinder 10 and a fine cotton core thread 13 engaging a slower rotating cylinder 14, the combined threads 17 passing on to a bobbin 16. This bobbin and a bobbin 18, Fig. 7 (Cancelled), containing a binding thread 19 are placed on a twisting machine and the threads 17, 19 pass through guides 20, 21 on to cops, the threads turning together as shown in Fig. 10 (Cancelled). This subject-matter does not appear in the Specification as accepted.
Patent GB-781039-A (GB)
Title: Improvements in or relating to a process for removing dust from smokes or gases
IPC: B01D51/02
Filed: 1955-09-20
Abstract: 781,039. Purifying smoke and gases. DOB. ESCH, C. Sept. 20, 1955, No. 26876/55. Class 55 (2). A process for removing solids from smoke or gases comprises compressing the smoke and saturated water vapour to the same excess pressure and expanding both compressed media from a common pressure vessel 2 through a throttling valve 5 into a chamber 6, indirectly cooled by coils or plates 13, to condense the water vapour and deposit the solids. The smoke is compressed by pump 1 and the saturated water vapour by pump 4 before entering vessel 2, the mixture being at about 5 atmospheres pressure. The throttling valve 5 is controlled by a regulator 7 under the influence of a manometer 8 in the chamber 6, the latter being maintained at 0.9 atmospheres pressure or less. The condensate formed on the solid particles such as dust flows off through discharge 9 and may be separated by filtration, whereas the smoke passes to the atmosphere at 11 through a suction pump 10. A pump 12 supplies cooling water to coils or plates 13, part of the water branching at 14 through a pipe 15 to a preheater 16, heated by the hot smoke, and then passes through line 17 to the steam generator 3. In a modification, the chamber 6 leads directly to the atmosphere and the valve 5 either works automatically in dependence on the difference of pressure across it or else is controlled from a manometer in the vessel 2.
Patent GB-706088-A (GB)
Title: Apparatus for mine roof control
IPC: E21D23/08
Filed: 1948-06-18
Abstract: 706,088. Hydraulic jacks. JOY MANUFACTURING CO. June 18, 1948 [May 1, 1948], No. 26960/52. Divided out of 706,002. Class 78 (3) [Also in Groups X. and XXXI] A mine roof support comprises a forward jack 10 having floor and roof engaging means 11, 12 connected by chains 39 to the floor and roof engaging means of a rearward jack 21 and a double-acting piston and cylinder 28 between the forward jack and an abutment jack 24, adapted to move the jacks 10, 21 forward relative to the abutment jack or vice-versa. Each floor and roof engaging means comprises freely circulating endless tracks on frames 19 which are carried by trunnions on the ends of a cross bar 17 which in the case of the roof engaging means has a universal mounting on the top of the jack. The pressure fluid supplied to the abutment jack passes through the piston rod of the cylinder 28. Downwardly inclined frames 42 are pivoted to extensions at the rear of the frames 19 of the rearward jack and engage the floor by wheels 45 and carry endless tracks.
Patent GB-1273152-A (GB)
Title: Improvements in or relating to thermal insulation
IPC: C03C25/34
Filed: 1968-06-06
Abstract: 1,273,152. Moulding plastic substances. FIBREGLASS Ltd. and R. J. ASHALL. 27 May, 1969 [6 June, 1968], No. 26986/68. Heading B5A. [Also in Divisions C3 and D1] A mat of glass fibres coated with a binder comprising a tri-polymer of phenol-formaldehyde, melamine-formaldehyde and mica-formaldehyde to which 30% of dicyardiamide is added, based on the weight of solids in the binder, disposed on a conveyer is advanced and compressed by another conveyer from above whilst the resin is cured at a temperature of about 250‹ C. The thermal insulation produced was formed to a thickness of 1 inch and to a density of 3 1bs. per cubic foot. The glass fibres may be replaced by other mineral fibres such as asbestos.
Patent GB-1254390-A (GB)
Title: Method of producing ferrites
IPC: C04B35/26
Filed: 1970-06-04
Abstract: 1,254,390. Ferrites. GENERAL MOTORS CORP. 4 June, 1970 [16 June, 1969], No. 26990/70. Heading H1H. [Also in Division C1] A finely divided ferrite is produced by coprecipitating ferric hydroxide with a barium, strontium or lead salt of an aliphatic carboxylic acid containing at least ten carbon atoms to form an intimate mixture of finely-divided particles, separating this mixture of particles from the mother liquor, heating the mixture of particles to dehydrate the ferric hydroxide and to decompose the barium, strontium or lead salt into its corresponding oxide, and then heating the resultant particulate mixture of oxides further to produce the corresponding crystalline ferrite in a finely divided form. Specified acids are lauric and stearic. The relative proportions of the starting materials may be chosen so that a hexagonal ferrite is produced. Complex ferrites may be made from mixtures of iron, barium, strontium and lead and other metals, e.g. manganese, magnesium, zinc and cobalt. The ferrites produced by this method may have an average particle size close to or smaller than the theoretical single domain size for that ferrite.
Patent GB-533001-A (GB)
Title: A testing device for coils of electro-magnets
IPC: G01R31/06
Filed: 1939-10-02
Abstract: 533,001. Testing magnet coils. ENGLISH ELECTRIC CO., Ltd., ROBERTS, L., and BALL, R. D. Oct. 2, 1939, No. 27010. [Class 37] Apparatus for determining the effective number of turns on a magnet coil comprises a transformer core 1 which forms a closed magnetic circuit but has one limb 1a hinged so that the circuit can be opened to allow the coil 2 under test to be slipped on to another limb 3. On the same core are a primary coil 4, which can be excited by alternating current or fluctuating current from a D.C. source through an interrupter, and a reference coil 5 which can be connected in series, with the coil 2 so that the E.M.F.'s induced in them are in opposition. The circuit can be completed through a switch 6 and an A.C. voltmeter 7, which may comprise a D.C. instrument and a rectifier. The reference coil 5 has tappings brought out to studs 8,9, 10 co-operating with switch arms 11, 12, 13 for varying the number of turns in circuit in steps of 100 turns, 10 turns, and single turns. The number of turns is adjusted to give zero reading on the instrument 7 and is then equal to the effective number of turns in the coil 2 under test. A discharge lamp 14 may be connected in parallel with the instrument 7 and switch 6 to protect the instrument against unduly high voltages. A series resistance 15 having a switch arm 16 biased to the zero position by a spring 17 may be arranged in series with the instrument 7. An open circuit in the coil 2 is detected by zero deflection for all positions of the contacts 11, 12, 13. If either terminal of the coil 2 is connected to earth by a switch 18 after balance has been obtained, a deflection of the instrument 7 is obtained if there is a fault to earth in the coil. The position of the fault may be located by re-adjusting the regulator to determine the number of coils not short circuited by the earth connections. The magnetic circuit may be provided with a shunt so that the magnetic flux linked with the coil 2 is a precise fraction of that linked with the reference coil 5.
Patent GB-518347-A (GB)
Title: Improvements in means for applying dressing to driving belts while in motion
IPC: F16G1/00
Filed: 1938-09-16
Abstract: 518,347. Holding tools. NOTON, T., and NOTON, K. S. [trading as NOTON, T.]. Sept. 16, 1938, No. 27018. [Class 61 (ii)] A device for holding a block of belt dressing composition enabling it to be applied to the belting from a distance comprises a troughshaped member 2 open at one side, a plate f adapted to close this open side and having apertures to take two screwed studs c<1> projecting from the member 2 enabling the belt composition block 5 to be gripped between teeth b', f' on the opposed gripping members by tightening the nuts c<2>, and a socket 3 fixed to the base portion d of the member 2 and adapted to receive a long handle 4 secured by screws 4a. If desired the holder may have a bent socket for the handle, and the gripping members may be semicylindrical to hold a round block. In another construction, Fig. 7, the block 5 is gripped at the' loop end 7d of a U-shaped member the legs of which slide in tubular portions 7a, 7b of the handle 7, gripping being effected by turning a screw 8. Fig. 13 shows a reacher device comprising tubular members 9, 9a by means of which the device shown in Fig. 1 may be mounted on a handle and used for overhead belts.
Patent GB-158957-A (GB)
Title: Improved flexible mandrel for use in bending tubes
IPC: B21D9/01
Filed: 1919-11-04
Abstract: 158,957. Copeland, E., and Hazlewood, F. J. Nov. 4, 1919. No Patent granted (Sealing fee not paid). Mandrels.-A flexible taper mandrel for use in bending taper tubes consists of a number of metal blades A connected by rivets B and screwed at C for removal after bending. Specification 1694/82 is referred to.
Patent GB-772407-A (GB)
Title: Processes for reforming gasolines or gasoline fractions by means of platinum-containing catalysts
IPC: B01J23/42
Filed: 1955-09-22
Abstract: A process for the reforming of a gasoline comprises passing it under reforming conditions over a catalyst which consists wholly or partially of platinum supported on a carrier having acid properties, the catalyst having previously been subjected to a conventional reduction treatment followed by a conditioning treatment at elevated temperature with hydrogen containing a small proportion of hydrogen sulphide or of a sulphur compound which yields hydrogen sulphide under the conditions prevailing during the conditioning treatment. This treatment is preferably carried out at a temperature between 400 DEG  and 500 DEG  C. with hydrogen containing between 0.005 and 0.1 per cent by volume of hydrogen-sulphide or an alkyl mercaptan or a diethyl sulphide at a pressure up to 30 atmospheres.  If the gasoline is sulphur free the conditioning treatment is continued for some time during the initial reforming period.ALSO:In a process for the reforming of gasoline (see Group IV(b)) the catalyst consists wholly or partially of platinum supported on a carrier having acid properties such as alumina, the catalyst having been pretreated firstly by subjecting it to a conventional reduction treatment and secondly by a conditioning treatment carried out at an elevated temperature with hydrogen containing a small proportion of hydrogen sulphide or of a sulphur compound which yields hydrogen sulphide under the conditions prevailing during the treatment.  This treatment is preferably carried out at a temperature between 400 and 500 DEG C. with hydrogen containing between 0.005 and 0.1 per cent by volume of hydrogen sulphide or an alkyl mercaptan or a dialkyl sulphide at a pressure up to 30 atmospheres.
Patent GB-1372644-A (GB)
Title: Diphenylcyclopentylamine compounds and methods for their  preparation
Inventor: CARNMALM B S E
IPC: A01N33/04
Filed: 1972-06-09
Abstract: 1372644 Diphenylcyciopentyl amines ASTRA LAKEMEDEL AB 9 June 1972 [11 June 1971] 27081/72 Heading C2C Novel compounds of Formula I and optical and stereoisomers and salts thereof are prepared by one of the following methods: (a) a 3,3-diphenyl cyclopentan-1-one is reacted with hydroxylamine or an amine HNR<SP>1</SP>R<SP>2</SP> and a reducing agent, (b) a 3,3-diphenylcyclopentane-1-carboxylic acid is converted via the chloride to an amide which is then either reduced or reacted with an N-bromination reagent and an alkali or (c) an above acid or acid chloride is reacted with hydrazoic acid and the resulting primary amine is optionally converted to a secondary or tertiary amine. In all cases separation and resolution of isomers may follow optionally with salt formation. Pharmaceutical compositions in conventional forms for oral or parenteral administration and having anti-depressant activity comprise an above novel compound and a carrier or diluent.
Patent GB-408281-A (GB)
Title: Improvements in and relating to apparatus for cutting vegetables, roots and the like
IPC: B26D3/18
Filed: 1932-09-30
Abstract: 408,281. Cutting vegetables. HOLLAND, W. L., and HOLLAND, W. H., Adelphi Works, Preston, Lancashire. Sept. 30, 1932, No. 27148. [Class 5 (i).] Apparatus for cutting vegetables comprises a rotating toothed cutter or disintegrator 32 against which the substances to be cut are fed along a table or platform 25 which is continually oscillated or reciprocated to present fresh faces to the teeth of the cutter or disintegrator. The cutter or disintegrator 32 comprises a cylinder having two sets of converging helical grooves in which are mounted toothed steel strips and is driven by a belt and fast and loose pulley arrangement, the belt fork 16 for which is adjustably mounted in openings 16<a> : alternatively, a direct drive may be employed. The table or platform 25 comprises a plate 25<a> pivoted at 26, a slider 28 having a pressing plate 29 and operated by means of a handle 30, and a stop 31 and is oscillated or reciprocated by means of link mechanism 23. A guard 34 pivoted at 35 comprises a pivoted plate 36 cooperating with a catch 38. Guide means 39, 40 are provided for the cut material. The pivot 26 is mounted in a bearing 43 supported by an upright 44 on which is also pivoted a locking plate 46. The guard 34 is prevented from being moved to expose the cylinder during rotation of the latter by means of a locking device comprising an apertured flange 48 on the fast pulley 15 and a sliding bolt 51 engaging either one of the apertures in the flange 48 or an aperture in the guard 34.