baber/WOPTO huggingface dataset:
Patent GB-424191-A (GB)
Title: Improvements in and relating to the purification of phenols
IPC: C07C37/72
Filed: 1933-05-18
Abstract: Phenol and its homologues are purified, particularly as a preliminary to catalytic hydrogenation, by treatment in the liquid phase with sulphuric acid under conditions precluding appreciable sulphonation of the phenol.  Treatment at a temperature not above 35 DEG  C. with 10--30 per cent by weight of 50--100 per cent sulphuric acid is suitable.  After the treatment, which may be repeated if necessary, the mixture is allowed to separate into layers, and the phenolic layer is withdrawn and optionally washed with water or caustic soda solution; it may finally be distilled. The process is particularly useful in the treatment of cresols or their mixtures, such as cresylic acid.ALSO:Phenol and its homologues are purified as a preliminary to catalytic hydrogenation by treatment in the liquid phase with sulphuric acid under conditions precluding appreciable sulphonation of the phenol.  Treatment at a temperature not above 35 DEG  C. with 10--30 per cent by weight of 50--100 per cent sulphuric acid is suitable.  After the treatment, which may be repeated if necessary, the mixture is allowed to separate into layers, and the phenolic layer is withdrawn and optionally washed with water or caustic soda solution; it may finally be distilled. The process is particularly useful in the treatment of cresols or their mixtures, such as cresylic acid.
Patent GB-1492964-A (GB)
Title: Fuel injection pumping apparatus governor
IPC: F02D1/04
Filed: 1974-04-02
Abstract: 1492964 Centrifugal governor C A V Ltd 18 March 1975 [2 April 1974] 14484/74 Heading G3B A centrifugal speed governor with provision for modified operation at low speeds of internal combustion engines has first and second sleeves 15, 17 on the pump and governor driving shaft 10, the sleeves being resiliently loaded against movement, by the weights and coupled to a pump control member 11 by a lever 23 and an element 24 pivotable together about an axis 24a and relatively mounted so that movement between the sleeves relative to one another produces a small movement of the control member whereas movement of the first sleeve alone produces large movement of the control member. The resilient loading may be by springs 8, 21 of which the main loading spring 8 may be a leaf-spring (not shown) provided with adjustment to vary the force opposing centrifugal force generated by weights 14 of Fig. 1. The embodiment shown in Fig. 3 has weights 31, 35 which act independently on sleeves 30, 32 respectively and move levers through elements 34, 33.
Patent GB-272883-A (GB)
Title: Improvements in and relating to high-potential switch-gear structures
IPC: H02B1/00
Filed: 1927-05-30
Abstract: 272,883. British Thomson-Houston Co., Ltd., (Assignees of Huber, H. J. H., and Trencham, H.). June 21, 1926, [Convention date]. Switchboards.-In polyphase switching arrangements for high power stations, faults in the system are not allowed to dedevelop into faults between phases, but are short-circuited to earth, and the magnitude of this short-circuit can be limited, as by earthing the neutral of the transformer secondaries through resistors. In the threephase arrangement shown, there are disconnecting switches 9, 10. 11. circuit-breakers 6, 7, 8, and disconnecting switches 18, 19, 20 and 21, 22, 23, disposed as shown with main bus-bars 12, 13, 14 and auxiliaries 15, 16, 17 for each phase connected to the lower contacts of the disconnecting switches on the right, Fig. 1, showing, by way of example, the bus 12 in its separate metal sheath 30 and connected to the contact 31 bv a connector 32 enclosed in a branch pipe 33 to the casing 34, the branch 33 having a flexible part 35 and all the parts being filled with insulating fluid and earthed. By putting a plate or like 40 on the movable contact 38 of a disconnecting switch, the circuits on either side can be earthed by raising or lowering the part 38, abnormally, to contact with earthing connections 41 or 43. The connections between the transformers, switches, circuit-breakers, and lightning-arresters are also enclosed and surrounded bv oil &c.
Patent GB-514785-A (GB)
Title: Improved rubber-like compositions
IPC: C08K5/03
Filed: 1938-05-16
Abstract: 514,785. Rubber compositions. CRAIGPARK ELECTRIC CABLE CO., Ltd., and DUNCAN, J. R. M. May 16, 1938, No. 14504. [Class 70] Flexible, fire-resisting compositions particularly for covering electric conductors are made by vulcanizing mixtures containing 30-50 per cent. of polymerized chloroprene and 10-20 per cent. of chlorinated diphenyl having a chlorine content of not less than 55 per cent., together with fillers and vulcanizing ingredients. Part of the chlorinated diphenyl may be replaced by other chlorinated organic compounds of similar chlorine content, e.g. chlorinated naphthalene mixed with chlorinated rubber, polyvinyl chloride, or chlorinated polyvinyl chloride, or the mixture sold under the trade name "Arubren." The mixture may contain kaolin or french chalk (as filler), with smaller quantities of zinc oxide and magnesia. Specification 499.908 is referred to.
Patent GB-1522734-A (GB)
Title: Final drive unit
IPC: F16F15/14
Filed: 1976-04-09
Abstract: 1522734 Motor vehicle drive lines NISSAN MOTOR CO Ltd 9 April 1976 [9 April 1975] 14514/76 Heading B7H A motor vehicle final drive unit includes a vibration damping coupling 36 which resiliently couples first and second drive shaft portions 18, 26 carrying a differential drive pinion 16 and a propeller shaft coupling flange 30 respectively, the coupling 36 being directly supported by a ball bearing 46 in an extension housing 24 attached to a main housing 12. The first drive shaft portion is supported in the main housing 12 by roller bearings 20, 22, and the second drive shaft portion 26 is supported in the extension housing 24 by a ball bearing 28. The vibration damping coupling 36 comprises an outer tubular member 38, inner tubular members 40, 42 in splined engagement with the first and second drive shaft portions 18, 26 respectively, and a rubber body 44 which is bonded to the tubular members 38, 40, 42 and has an inwardly extending portion 45 separating the ends of the inner tubular members 40, 42. The inner tubular members may have on their adjacent ends axially extending portions which interengage to limit relative twisting of the members to a predetermined maximum value.
Patent GB-637852-A (GB)
Title: Colour negative film containing integral masking images for colour correction
IPC: G03C7/18
Filed: 1945-06-08
Abstract: 637,852. Colour photography. GENERAL ANILINE & FILM CORPORATION. June 8, 1945. No. 14564. Convention date, May 3, 1944. Drawings to Specification. [Class 98 (ii)) Colour correction masking images are produced in multilayer material comprising a support bearing a red-sensitive silver halide emulsion layer containing a cyan coupler, a green-sensitive silver halide emulsion layer containing a magenta coupler, a yellow filter layer containing yellow colloidal silver or a yellow dye and fogged silver halide emulsion, and a blue-sensitive silver halide emulsion layer containing a yellow coupler by colour development, re-exposing the blue-sensitive and optionally either the green- or red-sensitive layer and developing in a black-and-white developer, incorporating in the layers a bluegreen, yellow, red, or black azo dye bleachable in presence of silver, the colour selected being different from that of the more-exposed layers, and treating in a dye destruction bath which does not irreversibly affect the dyes produced by colour development. Suitable dyes and colour couplers are specified. The dye destruction bath may comprise acidified thiourea or potassium thiocyanate (or rhodanine, thiohydantoin, thiourazole, thiotetrazoline, or thiourea-dioxide). The original film may have a yellow azo dye in the magenta layer, and may be dyed with a blue-green dye after the reexposure, to produce a final green masking image in the magenta layer. A red masking image may be produced in the cyan layer, or gray masking images (either using a black azo dye or a mixture of dyes) may be produced in the cyan and magenta layers. The azo dyes may be fixed in the layers by treatment with a dye precipitating solution such as calcium lactate, diphenylguanidine acetate, or #-naphthylbiguanide hydrochloride solution. Specifications 471,520, 602,881 and 637,879 are referred to.
Patent GB-703018-A (GB)
Title: Improvements relating to dolly-operated electric switches
IPC: H01H23/16
Filed: 1951-06-20
Abstract: 703,018. Mechanical switches. NETTLE ACCESSORIES, Ltd., and KIRKHAM, N. June 19, 1952 [June 20, 1951], No. 14611/51. Class 38(5) A dolly-operated switch has a cam 9 for actuating the contact arm 5, and a second co-axial cam 7 having a central projection 15 which moves over an angular part 14 on a spring 12, the part 14 sliding into hollows in the cam 7 at the open and closed positions of spring 5. The arrangement may be adapted for -two-way operation by placing further contacts on the other side of the spring 12, Figs. 1, 2, (not shown).
Patent GB-1342297-A (GB)
Title: Process for the production of citric acid by submerged  fermentation
IPC: C12P7/48
Filed: 1971-05-13
Abstract: 1342297 Citric acid JUNGBUNZLAUER SPIRITUS UND CHEMISCHE FABRIK AG 13 May 1971 [1 June 1970] 14752/71 Heading C2C Citric acid is prepared by submerged fermentation of carbohydrate containing material in the presence of the mould Aspergillus niger in the presence of stainless steel. The nutrient solution contains partially purified carbohydrates, e.g. sugar purified by decationization, and the fermentation is carried out in the presence of stainless steel which in addition to iron and copper contains chromium, manganese, nickel, molybdenum, niobium and/or titanium. The stainless steel may be present as a structural part of the fermentor, feed lines or cooling coil or by the introduction of a piece of steel and a surface ratio of 1.2 cm.<SP>2</SP>/100 ml. of nutrient solution is preferred.
Patent GB-1494697-A (GB)
Title: Detergent resistant auto polish
IPC: C09G1/00
Filed: 1975-04-10
Abstract: 1494697 Automobile polishes DOW CORNING CORP 10 April 1975 [13 May 1974] 14754/75 Heading C5W [Also in Division C3] An automobile polish comprises from 1-10% wt. of a carboxyfunctional siloxane composed of from 0À1 to 50 mole per cent of units and from 50-99À9 mole per cent of units wherein R is a carboxy functional radical attached to the silicon atom via a silicon-to-carbon bond, a is 1-3, R' and R" are C 1 -C 18  hydrocarbon or halohydrocarbon radicals, b is 0-2, a + b is 1-3, and c is 0-3. The carboxy functional radical preferably has the formula where Q is a divalent linking group attached to the silicon atom via a Si-C bond, and is preferably a C 2 -C 10  alkylene group or a C 2 -C 10  group composed of C, H and S atoms in the form of thioether linkages. Optional additives include waxes, solvents, surfactants, thickening agents, abrasives, dyes and odorants. The polishes may be solvent based, water based or paste wax polishes. In Example 1 water based emulsion polishes are prepared which consist of 60% wt. water, 25% wt. Stoddard solvent, 10% wt. anhydrous aluminium silicate abrasive, 1% wt. of an alkanolamide nonionic surfactant and 4% wt. of a siloxane fluid composed of 2 mole per cent units, 88-96 mole per cent (CH 3 ) 2 SiO units and either 2, 6 or 10 mole per cent of units or 10 mole per cent of units. In Example 2 a solvent based polish is prepared from 5% wt. Stoddard solvent, 1% wt. microcrystalline wax, 92À5% wt. naphtha and 1À5% wt. of a siloxane composed of 2 mole per cent units, 96 mole per cent (CH 3 ) 2 SiO units and 2 mole per cent units. In Example 3 a paste wax polish/cleaner is prepared from 86% wt. Stoddard solvent, 8% wt. carnauba wax, 2% wt. microcrystalline wax and 4% wt. of the siloxane of Example 2.
Patent GB-1319417-A (GB)
Title: Treatment of waste liquor from a soda based pulping process
IPC: D21C11/00
Filed: 1971-05-13
Abstract: 1319417 Sodium sulphite recovery SONOCO PRODUCTS CO 13 May 1971 [14 May 1970] 14823/71 Heading C1A Waste liquor from a soda-based pulping operation, preferably after concentration in evaporator (1) to a solids content of from 25-70% by weight, is mixed in (3) with alumina or its hydrate and furnace ash comprising sodium aluminate derived via pulverizer (10) to give an Na 2 O : Al 2 O 3  molar ratio of 1 : 1 to 2 : 1 and to form a solid particulate mass and then the latter is combusted in furnace (7) at 1000‹ F. or above (e.g. 1500-2000‹ F.) but below the fusion point of sodium aluminate. Following the furnace operation, a portion of the furnace ash is recycled via (10) to mixer (3) and a further portion may be dissolved in water in (12) and the resulting solution mixed with bisulphite solution in reactor (17) whereby alumina or its hydrate is precipitated and normal sulphite remains in solution. After filtration in (20), the sulphite solution may be re-used in the liquor make-up for the pulping operation and the hydrated alumina may be recycled to the mixer (3). Some of the sulphite solution may also be contacted in absorber (22) with SO 2  derived from the furnace flue gas in order to produce the bisulphite solution used in reactor (17).
Patent GB-374241-A (GB)
Title: Improvements in or relating to methods of manufacturing oxide cathodes for use in thermionic valves and other electric discharge devices
IPC: H01J9/04
Filed: 1931-05-20
Abstract: 374,241. Thermionic cathodes. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE, 12, Hallesches Ufer, Berlin. May 20, 1931, No. 14901. Convention date, May 20, 1930. [Class 39 (i).] In making oxide cathodes a layer of powdered oxide or oxides of tungsten or copper is applied to a carrier by a binder such as the material known under the Registered Trade Mark "Cellon" and is subjected to heat or electric treatment in barium vapour. The oxide W2O5 may be used and a percentage of WO3 or WO2 or metallic tungsten may be added. The layer may be applied by painting or spraying. The carrier may be a wire or a small tube indirectly heated.
Patent GB-103972-A (GB)
Title: Improvements in Crushing and like Mills.
IPC: C13B10/06
Filed: 1916-10-20
Abstract: 103,972. Miller, J., and Fletcher & Co., G. Oct. 20, 1916. Roller mills.-An indicating-device for the rollers of crushing or like mills comprises a rod moving with the roller or its bearing-bush and connected to an indicating-pointer, the rod, pointer, and connexion means between these parts being capable of motion considerably in excess of the maximum indicated by the scale or dial, so that the roller is capable of an extraordinary degree of movement to clear an obstruction without risk of damage to the indicating-mechanism. As shown applied to a sugar-cane mill, a rod 3 bears at the lower end on the roller 1 and is pivoted at the outer end to a link 9, which is connected through gearing to a pointer 10 capable of movement without limit over a graduated circular dial 11 mounted on a support 12 on the headstock 2. The rod 3 is guided vertically in bearings 5 and provided with a right and left handed threaded nut 8 for adjustment purposes.
Patent GB-1504444-A (GB)
Title: Method of manufacturing capacitors and capacitors formed by the method
IPC: H01G4/32
Filed: 1976-04-13
Abstract: 1504444 Capacitors TRW Inc 13 April 1976 [25 April 1975] 14945/76 Heading H1M In a method of manufacturing wound metallized plastics capacitors wherein the wound roll is heated to tighten the winding by heatshrinkage of the plastics strips, a volatile liquid is applied to the strips during winding to act as a lubricant. Heating may take place at first at atmospheric pressure so that the lubricant remains during shrinking, then in vacuo to eliminate the lubricant. The lubricant is preferably water, but may also be a lower alcohol or a fluorinated hydrocarbon.
Patent GB-1286589-A (GB)
Title: Process for the recovery of nickel
Inventor: O'NEILL CHARLES EDWARD
IPC: C01G53/02
Filed: 1970-03-31
Abstract: 1286589 Recovery of nickel INTERNATIONAL NICKEL CO OF CANADA Ltd 31 March 1970 [27 March 1969] 15055/70 Heading C1A Nickel is recovered as nickel carbonyl from impure nickel compounds by heating an aqueous bath containing the compound either dissolved or undissolved with carbon monoxide and, if the compound is insoluble, a water soluble sulphide to temperature of 100-200 C. at a CO partial pressure of at least 30 atm., while neutralizing any acid formed to maintain the pH of the bath no lower than that of a saturated aqueous CO 2  solution under the reaction conditions. The sulphide catalyst, which may also be present if the nickel compound is soluble, is preferably present in a concentration of from 0À01 to 0À1 mole S/mole Ni. The preferred concentration of nickel in the bath ranges from 0À5 to 5 mole Ni/ litre. Reducing agents, in addition to the CO, may be present, e.g. hydrogen, sponge iron, iron carbonyl, zinc and aluminium powders. Gaseous reducing agents should be used with insoluble nickel compounds. Solid reducing agents preferably pass through 100 mesh (Tyler) sieve, and are not in excess of 1À1 mole/mole Ni. Complexing agents, preferably ones that form watersoluble nickel complexes, may be added to the bath in amounts from 2 to 8 moles/mole Ni, such agents include ammonia, monoethanolamine 2 - (2 - aminoethylamino) ethanol, ethylenediamine, n-butylamine, 1,2-propanediamine and 1,3-propanediamine. The reaction may be carried out continuously or batchwise, and is complete generally after 1-2 hours. Up to 99% Ni recovery may be achieved.
Patent GB-1459143-A (GB)
Title: Slidable-armature type motor
IPC: H02K17/16
Filed: 1974-04-04
Abstract: 1459143 Dynamo-electric machines SIEMENS AG 4 April 1974 [27 April 1973] 15100/74 Heading H2A In a modification of the electric motor of the parent Specification, the air gap d2 around the short rotor portion 21 which is outside the stator bore in the de-energized state of the motor, is smaller than the air gap d 1 around the longer rotor portion 22. As shown in Fig. 3, the diameter of rotor portion 21 may simply be greater than that of rotor portion 22. The outer periphery of portion 21 may be stepped, Fig. 3a. Alternatively, the rotor portions 21 and 22 may have the same diameter and the diameter of the stator bore may be non-uniform.
Patent GB-694686-A (GB)
Title: Improvements in or relating to stoves
Inventor: BLUMSOM ERNEST JAMES
IPC: F24C13/00
Filed: 1951-06-26
Abstract: 694,686. Kitchen ranges. ALLIED IRONFOUNDERS, Ltd. June 26. 1951 No. 15116/51. Class 126 In a closed combustion stove having an insulated fire door at the front giving access to the combustion chamber secondary air is passed from the ash space to the said chamber through an upwardly tapering duct formed in the front part of the stove and so forwardly inclined as to direct the now heated air against or in close proximity to the inner face of the door. In the cooker shown the firebox 6 has a front wall 6a which is so spaced from a lining brick 1a that an upwardly tapering . outwardly directed secondary air duct 10 is formed the air in passing through becoming heated before issuing from the 'slit outlet 10a to contact the inner surface of the door 9. The cooker is provided with a back boiler 3, a hot plate 1 and an even 2, the latter being heated partly by direct radiation and partly by heat reflected from an inclined element 2a. A baffle 2b is provided inside the oven for inducing circulation of heat therein. A damper 3b controls the flow of combustion gases through the boiler flue 3a whilst it is apparent from Fig. 2 that air may be passed from a space below the ash pan directly to the base of the outlet flue 1c.
Patent GB-1210173-A (GB)
Title: Adjustable measure liquid dispensing device for liquid-carrying containers
IPC: B65D47/38
Filed: 1968-03-29
Abstract: 1,210,173. Displacing measured quantities. EMIL VON DER CRONE. 29 March, 1968 [3 April, 1967], No. 15128/68. Heading B8N. A liquid dispensing device for bottles comprises a stopper 2 adapted to fit the neck of a bottle, a pouring spout 3, a measuring chamber 4 having a stop member, e.g. a ball 6, movable therein, the chamber including an opening for permitting flow of liquid to the spout and a regulator opening 4b for permitting flow of liquid into the chamber to assist in displacement of the stop member, and a displaceable sleeve 7 having a substantially V-shaped opening 7b therein. The sleeve is displaceable relative to the chamber to vary the effective size of the regulator opening, or to close that opening. The sleeve may be connected to a slidable ring 9 provided with a pointer 9b which cooperates with a scale 3a. When the bottle is tipped to dispense liquid the ball 6 rolls towards the spout, finally contacting a valve seat and preventing flow of liquid via the spout, and the force acting on the ball to urge it to the closed position can be varied by varying the effective size of the regulator opening. When the latter is closed the device will permit continuous dispensing.
Patent GB-662003-A (GB)
Title: Improvements in change speed chain gears
IPC: B62M9/16
Filed: 1949-06-07
Abstract: 662,003. Change-speed gearing. JUY, L. C. H. June 7, 1949 [June 8, 1948], No. 15145/49. Class 80 (ii). An arm 1 mounting the laterally moving pulley or other member effecting shift of a bicycle driving chain from one to another of a group of rear hub sprockets is pivotable about a spindle 2 to tension the chain under the action of a torsion coil spring 3 encircling the spindle and having one end engaging the arm 1 and the other end 7 connected by a rod 8 and clamp 10 to the pulleyoperating cable 9 so as to tend to compensate for loss in chain tension due to rearward movement of the arm 1 on speed changing. The rod 8 and cable 9 may be connected by welding, and the point of attachment of the rod to the spring may be made variable by the use of a slider or a series of notches on the end 7. In Fig. 6 (not shown) the rod 8 engages an arm fast with the spindle 2, which is rotatable and engages the end 7. In Fig. 7 (not shown) the spring 3 is replaced by a tension coil spring between the rod 8 and an upward extension of the arm 1.
Patent GB-1214423-A (GB)
Title: Electric switches and methods of making same
IPC: H01H1/60
Filed: 1969-03-24
Abstract: 1,214,423. Lubricants. GLOBE-UNION Inc. 24 March, 1969 [13 May, 1968], No. 15266/69. Heading C5F. [Also in Divisions B2 H1] A dry electrically insulating film lubricant may be (i) a colloidal tetrafluoroethylene resin combined with a phenolic or epoxy resin solution applied to a surface by spraying followed by baking at 300-320‹ F. and optionally a further heat-treatment at 550‹ F. to improve the adhesion by partially decomposing the resin, or (ii) colloidal molybdenum disulphide or tungsten disulphide combined with sodium silicate and water or with isoproponal is applied followed by heating to 350‹ F. and curing by drying in air, or (iii) tetrafluoroethylene, combined with 30-50% of water plus modifiers which is sprayed on, allowed to dry for 15 minutes and then fused at 725-800‹ F. for 15-25 minutes.
Patent GB-1179633-A (GB)
Title: Display System
Inventor: STILLWELL PETER FREDERIC THOMA
IPC: H04N1/113
Filed: 1967-04-04
Abstract: 1,179,633. Cathode ray display tubes. RANK ORGANIZATION Ltd. 29 March, 1968 [4 April, 1967], No. 15280/67. Heading H1D. [Also in Division H4] An image to be displayed is scanned by a plurality of photo-cells 10, Fig. 1 (not shown), arranged in a vertical line and the resulting electrical signals are fed to a matrix member of holes in a cathode ray tube 16, Fig. 3, of the type described in Specification 975,251, i.e. the output of each photo-cell is connected to the controlling wire of a hole in the matrix, so that a pattern of light spots is produced on the screen of the tube 16. A bundle of light fibres 18 connected to the screen of the cathode ray tube rearranges the pattern of light spots into a line of light spots corresponding to the line of photo-cells, and by means of a rotating mirror drum 19 the light spots at the ends of the fibres are reflected on to a screen in synchronism with the scanning of the line of photo-cells over the original image.