baber/WOPTO huggingface dataset:
Patent GB-1123499-A (GB)
Title: Recovery of potassium chloride
IPC: C01D3/14
Filed: 1966-08-04
Abstract: In a process for evaporating a solution containing KCl and NaCl to precipitate NaCl and then cooling the KCl-rich solution to crystallize out KCl, the resultant KCl-depleted solution is passed upwardly into the lower part of the evaporator to elutriate solid impurities and enable pure NaCl to be recovered. Preferably a series of 4 steam heated evaporators are used, which increase in temperature in the direction of liquid flow, each having a narrower leg in its lower part.  The feed solution may be used as elutriating liquid in evaporators 1 and 2, and the recycle solution in 3 and 4.  NaCl withdrawn from the legs of evaporators 1 and 2 may be fed to one centrifuge, and that from evaporators 3 and 4 to another; effluent liquid may be used as part of the elutriating liquid in evaporators 2 and 4 resp.  The recycle solution may also be used as part of the feed to evaporator 3. Tables showing the temperatures and amounts of NaCl, KCl, MgCl2, CaCl2, and CaSO4 at all stages are given.ALSO:In a process for evaporating a solution containing KCl and NaCl to precipitate NaCl and then cooling the KCl-rich solution to crystallise out KCl, the resultant KCl-depleted solution is passed upwardly into the lower part of the evaporator to elutriate solid impurities and enable pure NaCl to be recovered.  As shown, four evaporators connected in multiple-effect are used which increase in temperature in the direction of liquid flow, each having a narrow leg 11 in its lower part.  The feed solution is introduced into evaporator 4; and the liquor withdrawn from evaporator 1 is cooled to precipitate KCl.  The direction of steam flow is countercurrent to the direction of solution flow.  The feed solution may be used as elutriating liquid in evaporators 1 and 2, and the recycle solution in evaporators 3 and 4.  NaCl withdrawn from the legs of evaporators 1 and 2 may be fed to one centrifuge, and that from evaporators 3 and 4 to another; effluent liquid may be used as part of the elutriating liquid in evaporators 2 and 4 resp.  The recycle solution may also be used as part of the feed to evaporator 3.
Patent GB-448339-A (GB)
Title: Improvements in and relating to systems of electric motor control
IPC: H02P5/50
Filed: 1934-12-05
Abstract: 448,339. Automatic control systems. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London, and FOX, K. M., 15, Southfield Road, Rugby. Dec. 5, 1934, No. 34960. [Class 38 (iv)] Speed.-In a control system, for a number of electric motors 2 driving machines or machine sections 1 which require to be maintained in a predetermined adjustable relationship with each other, comprising a separate synchronizing device 7 driven by each motor and operating to control the power input thereof according as the said device is delivering or receiving power, reversible pilot motors 28 are controlled by the synchronizing devices to alter the positions of the brushes on the driving motors 2 which are of the variable speed arc commutator type. A directional power relay 23 may be connected in the supply circuit to the synchronous machine constituting the synchronizing device 7 to operate contacts controlling the pilot motor, or the synchronous machine may have a movable external member spring-biassed to a central position and adapted to operate similar contacts. Specifications 158,468 and 186,470, [both in Class 38 (iii)], are referred to. Speed may be adjusted by a hand wheel 17 operating upon the brushes of a commutator motor 16 driving an alternator 15 maintained at constant frequency by a speed regulator 22.
Patent GB-308647-A (GB)
Title: Improvements in and relating to the manufacture of condenser tubes and the like
IPC: C22C9/04
Filed: 1927-12-24
Abstract: 308,647. Hutton, R. S. Dec. 24, 1927. Metal tubes.-Condenser tubes, ferrules &c. are made of aluminium brass containing at least 71 per cent copper and up to 5 per cent aluminium, but preferably between 0.5 and 2 per cent aluminium. The tubes may be formed from cast billets by hot piercing or extrusion at a temperature in the neighbourhood of 800-820‹ C., the working being somewhat quicker than with masses of 60 per cent copper and 40 per cent zinc. In casting the billets, hollow tube shells &c. from which the manufacturing process starts, special precaution is taken to avoid turbulence, in the stream of molten metal as this leans to oxidation and discontinuation in the castings. Alloys containing (a) 76 per cent of copper, 22 per cent zinc, and 2 per cent aluminium, or 70 per cent copper and 30 per cent zinc, and (c) the same with 0.02 per cent arsenic are mentioned. Specifications 23719/13, [Class 83 (i), Casting &c. metals], and 179,261, [Class 82 (i), Metals, Extracting &c.], are referred to.
Patent GB-1336229-A (GB)
Title: Expanded natural grains cereal for lightweight building materials
IPC: C04B20/04
Filed: 1971-07-26
Abstract: 1336229 Compositions containing expanded natural grain E I ROBINSKY J TIMUSK V R RILEY 26 July 1971 [27 July 1970] 35012/71 Heading C3N [Also in Divisions C1 and B2] A construction material is produced by expanding natural grain and then further treating the grain to stabilize it by: (a) carbonization, or (b) by treatment with a material selected from asphalts, creosotes, resins, wax, latex, rubbers, plastics, cement paste, bacteriostats, one or more inorganic polymers or a combination thereof. The grains may be expanded by applying heat and pressure and suddenly releasing the pressure or by extrusion. Stabilized grains may be used directly as insulating material in the form of discrete particles, or may be bonded together, e.g. by hot pressing, for example to form an insulation board. Alternatively the discrete particles may be used as a lightweight aggregate in concrete. The concrete may contain cement of the conventional type such as Portland, magnesia, high alumina, expanding and regulated set cement and other binding material such as plaster of Paris, bitumens, (2) primary aggregate, e.g. sand, vermiculite, asbestos, slag, (3) conventional additives, e.g. wetting agents, rapid set promoting agents, set retarding agents, plastifying agents, water reducing agents, waterproofing agents, and air entraining agents. Carbonized grains may be combined with ceramics and used to produce lightweight insulated chinaware or high temperature insulating fire bricks. In an example a core material for sandwich building panels comprises 80% carbonized grains, and 20% Portland cement paste which includes 5% asbestos fibres or 10% granular fillers such as sand to reduce shrinkage, and preferably has a water/cement ratio of 0À25 by weight.
Patent GB-868721-A (GB)
Title: Improvements in or relating to means for supplying cooling medium in drilling machines
IPC: B23Q11/10
Filed: 1957-11-11
Abstract: 868,721. Drilling long holes. LEBLOND MACHINE TOOL CO., R. K. Nov. 11, 1957 [Feb. 27, 1957], No. 35016/57. Class 83 (3). In drilling long holes in rotating work 18, cooling fluid, e.g. cutting oil, is supplied, along the outside of the drill 28, to the hole 48 being drilled and arranged to impinge tangentially, Fig. 3, on the drill so as to reduce the risk of drill vibration. The machine described is the same as that in Specification 871,475, except for the drill-guiding work-clamp 20, which has a guide 42 for the drill and a tangential opening 36, 38 for the coolant. The latter directs the coolant along a rotary path, in the same direction of rotation as the work and thus of the work-engaging assembly 54. In a modification, Fig. 4, the opening 361, 38<SP>1</SP> is also directed axially, towards the work, and the coolant impinges on a sleeve surrounding the drill.
Patent GB-343164-A (GB)
Title: Process for the manufacture of azo dyestuffs insoluble in water
Filed: 1929-11-15
Abstract: Azo dyes; azo dyes, forming on the material.-Azo dyes insoluble in water are made by coupling a diazo compound of an aromatic amine, diamine or aminoazo compound or of a heterocyclic amine or of a derivative thereof containing no group inducing solubility in water e.g. COOH or SO3H, in substance or on the fibre, with an arylide of carbazole-2-hydroxy-3-carboxylic acid.  In an example, cotton is impregnated with the a -naphthalide and developed with diazotized 2-aminocarbazole; a fast brownish bordeaux is obtained.  The following components and shades obtained are also specified: the anilide, b -naphthalide, o- and p-anisidide; dianisidine, o-phenetidine-azo-a -naphthylamine, m- and p-nitro-o-anisidine, 9-ethyl-3-aminocarbazole, 2 : 5-dichloraniline, 5-nitro-2-anisidine. Specification 329,353, [Class 15 (ii), Dyeing, Processes &c. for], is referred to.  Carbazole-2-hydroxy-3-carboxylic acid arylides are made from carbazole-2-hydroxy-3-carboxylic acid (see Specification 303,901, [Class 2 (iii), Dyes &c.]) and the corresponding amine according to known processes.  9-Ethyl-3-aminocarbazole is made by nitrating 9-ethylcarbazole and reducing.
Patent GB-782193-A (GB)
Title: Thrust bearings
Inventor: LOXLEY RONALD ALAN KEITH
IPC: F16C33/10
Filed: 1954-12-03
Abstract: 782,193. Thrust bearings. GLACIER METAL CO., Ltd. Nov. 30, 1955 [Dec. 3, 1954], No. 35130/54. Class 12 (1). In a thrust bearing comprising an annular bearing surface in a plane normal to the axis of rotation which co-operates with a corresponding surface on a part rotating relative thereto, the bearing surface is formed with generally radial recesses 2 interposed between radial lands 1, the leading edge 3 of each land 1 being inclined at an angle # of between 10 and 50 degrees with a radial line passing through the middle of the edge. The arcuate length of the outer edge of the recess is not less than 15 per cent of the total arcuate length between the outer ends of the leading edges of adjacent lands 1. At the trailing edge of each land a relatively deep radial groove 4 is provided through which lubricating oil is supplied to the bearing. In a modification shown in Fig. 4, the step 3 is curved preferably, to that of the inclination a of a tangent drawn at any point is proportional to the length of the radius to that point.
Patent GB-885267-A (GB)
Title: Crossheads of reciprocating engines
IPC: F16C5/00
Filed: 1960-10-13
Abstract: 885,267. Crossheads. SULZER FRERES S.A. Oct. 13, 1960 [Dec. 18, 1959], No. 35154/60. Class 122 (1). In an engine crosshead in which a piston rod 1 and a connecting rod 8 are interconnected by a crosshead pin 2 guided in a slide (not shown), one rod 1 engaging the axially central part of the pin whilst the other rod 8 carries bearings 7 that surround the pin one on each side of the central part, the bearings 7 are connected to the associated rod 8 by support members 10 so disposed that, in operation, the lines of action of the resultant reaction forces 5 of these members 10 on the bearings are offset from the axial centres of the bearings, through which the resultant R of the forces applied by the pin to each bearing passes, in a direction away from the axis of the rod 8.
Patent GB-205405-A (GB)
Title: Improved pencil holder
IPC: B43K21/08
Filed: 1922-12-27
Abstract: 205,405. Luyken, W., and Thu-Wu Schreibwaren-Werke Ges. Dec. 27, 1922. Pencil - holders. - Pencil-holders of the kind wherein a lead-gripping piece is screwed into the tubular bodv of the holder are modified by the provision of a push-rod abutting against the end of the lead and gripped by the gripping-piece when it is screwed home, the lead being merely held by friction at the outer end of the gripping-piece. The inner end c of the gripping-piece a. Fig. 1, is preferably tapered and is provided with screw threads engaging corresponding threads b<1> within the end of the tubular bodv b. which may also be tapered inwardly. The gripping-piece is split at both ends, preferably by a single diametral cut at the outer end and two cuts at right-angles to the inner end, and is provided with an axial bore a<1> to receive the end of the push-rod d of the same diameter. The lead f within the axial bore is of less length than the gripping-piece, its inner end abutting against the end of the push rod and its outer end being held by the split end of the gripping-piece. To project the lead the member a is slightly unscrewed and the pencil-holder given a jerk, point downwards, thereby causing the push-rod to force the lead outwards. A weight e may be provided' within the tubular body to assist the push-rod in projecting the lead, and may comprise a cylindrical body containing spare leads. When the lead is sufficiently projected the gripping-piece is screwed up tightly to grip the push-rod. In a modification, Fig. 7, the push-rod d' is provided' with a screw thread and has a lateral projection i which projects into a longitudinal slot in a tube g surrounding the rod within the pencil body. An extension k on the tube g projects through the closed end of the bodv b and is secured bv a pin m to a rotatable button h. Screw threads may be provided in the bore of the gripping- piece to engage the threads upon the push-rod d<1>, and the front end d<2> of the rod may be reduced to enable it to follow the leads sufficiently to project them from the gripping-piece. To retract the lead the gripping-piece is loosened and the lead point pressed upon the writing surface.
Patent GB-1433204-A (GB)
Title: Cover band conveyor
IPC: B65G15/42
Filed: 1973-07-24
Abstract: 1433204 Conveyer belts G BECHTLOFF 24 July 1972 [27 July 1972] 35229/73 Heading B8A [Also in Divisions B5 and B2] In a conveyer system in which the load is conveyed between two opposed belts at least one of the latter is provided with an elastically deformable layer, e.g. of foam material, the load engaging surface of which is formed with transversely extending wave-like ribs 7. The ribbed surface has a reinforcing skin which is of a denser form of the same material (e.g. polyurethane) as the foam. The skin is integrally formed on the foam, e.g. by spraying.
Patent GB-1164569-A (GB)
Title: Improvements in or relating to Antilipaemic Sulphated Polysaccharides
IPC: C08B37/02
Filed: 1968-07-24
Abstract: 1,164,569. - Antilipaemic compositions. ROCADOR S.A. 24 July, 1968 [9 Aug., 1967], No. 35291/68. Heading A5B. [Also in Division C3] A pharmaceutically acceptable salt of a sulphated hydrodextran having an average S content of 1-3 SO 3  groups per monosaccharide unit and being substantially non-reducing by the Somogyi method (see Division C3) may be administered, in conjunction with conventional pharmaceutical carriers or diluents, as an antilipaemic agent. Oral (preferred) and injection routes are specified. The Na and K salts are exemplified.
Patent GB-354361-A (GB)
Abstract: 354,361. Ordnance sights. SOC. DES ETABLISSEMENTS KRAUSS - OPTIQUE ET MECANIQUE DE PRECISION, 18, Rue de Naples, Paris. May 7, 1930, No. 14020. Convention date, May 28, 1929. [Class 92 (ii).] Micrometric means for adjusting goniometric sighting instruments for guns or other apparatus s u b - ject to shocks in operation comprises a number of spring-pressed discs or sleeves A, B, C, D, connected by toothed gearing the number of teeth m in one gear differing slightly from the number of teeth n in another gear so as to permit of a differential adjustment of the disc D with respect to the disc A through a very small angle. In operation, the disc A is fixed to the gun and the disc D carrying the instrument is first adjusted relatively to the upper part of an index K<2> to coarse graduations each representing 100 mils 1/64 of a revolution). The discs C, D are then turned together through a definite number of teeth S as indicated by, the lower part of the index K2, and finally the discs B, C, D are turned backwards together through the same number of teeth S as indicated by an index K<1>. The resultant fine movement conveyed to the disc D is thus (m-n/mn) of a revolution for each of the teeth S. If m = 57 and n = 56, each of the teeth S can be of the order of 2 mils. In a modification, the discs have concentric rings of teeth on their upper and under surfaces.
Patent GB-482363-A (GB)
Title: Improvements relating to dry batteries
IPC: H01M50/103
Filed: 1936-06-24
Abstract: 482,363. Batteries. MAcCALLUM, F., and REDFERN, A. H. June 24, 1936, No. 35651/35. [Class 53] A number of flat cells comprising bipolar plates of zinc and carbon are held together during assembly by tubes 10 of rubber or other extensible material containing string, cord or other inextensible material 11 the ends of which project from the tubes 10 and are tied together as shown at 12. The cells while thus bound tightly together are covered with an elastic coating 16 which may comprise alternate layers of varnish and rubber applied in solution which may be vulcanized by immersion of the complete assembly in a sulphur solution. The vulcanizing process may be arrested by dipping the battery in caustic soda or ammonia. Alternatively vulcanization may be effected by employing layers of self-vulcanizing rubber compound. When the vulcanizing process has been completed the string 11 is cut, the tubes 10 being held in position by the covering 16 and being sufficiently elastic to allow of expansion of the battery. Specifications 423,165 and 474,151 are referred to.
Patent GB-389055-A (GB)
Title: Improvements in double deck passenger vehicles
IPC: B62D31/04
Filed: 1932-12-16
Abstract: 389,055. Omnibuses. FIFTH AVENUE COACH CO., 605, West 132nd Street, New York, U.S.A.-(Assignees of Forrester, M. J. ; 2516, 33rd Avenue, Astoria, New York, U.S.A.) Dec. 16, 1932, No. 35746. Convention date, April 14. [Class 108 (i).] In a double-deck omnibus the upper deck is arranged at two levels 13, 14 with an aisle 15 extending longitudinally at the lower level and seats 17 being arranged at both levels on either side of the aisle 15 together with a stairway 20 leading from the lower deck to said aisle. The stairway 20 is arranged at the front of the vehicle in spaced relation to the sides and is arranged that the lowest step is situated vertically below the upper deck level 13 to give maximum head-room. The opening of the stairway on the upper deck is enlarged as at 24 to enable passengers to see the full extent of the stairway, the opening being provided with a casing 28 and hand rail 27. The stairway 20 is provided with casings 29, 30 which are bulged outwards to permit the provision of hand rails 31, 32. The undersurface of the upper deck part 14 and aisle 15 may be padded as at 18 to protect passengers entering the seats 17 on the lower deck immediately beneath those parts.
Patent GB-845237-A (GB)
Title: Lubricating greases
Filed: 1957-11-18
Abstract: A lubricating grease comprises a major proportion of a mineral oil and a minor proportion, sufficient to form a grease, of a mixture of soaps, the acid components of which comprise 15-80% by weight of wool grease fatty acids and the balance aliphatic acids having at least twelve carbon atoms per molecule, the metal components of the soaps being lithium and at least one of calcium, strontium, barium, zinc, potassium or tin, the ratio of lithium to each of these metals being between 27 and 4:1; 42 and 2.8:1; 33 and 3:1; 30 and 5:1; 50 and 10:1; and 50 and 8:1 respectively provided that where potassium or tin soaps are used there should be present a wool grease fatty acid soap of potassium or tin.  The mineral oil may be naphthenic or paraffinic in character having a viscosity of 1-6000 seconds (s.u.v.) at 100 DEG F.  The wool grease fatty acids are as described in the parent Specification. Representative aliphatic acids are stearic, 12-hydroxy stearic, oleic, palmitic, hydroxy palmitic, myristic and hydroxy myristic acids and mixtures obtained from natural oils or their hydrogenated derivatives such as stearin, hydrogenated tallow fatty acids, hydrogenated soya bean fatty acids, hydrogenated fish oils and partially hydrogenated marine, vegetable and animal oils. The soaps can be preformed or formed in situ by methods such as described in the parent Specification.  They may be present in total amounts of 5-30% by weight of the composition. Optional ingredients include antioxidants, such as amines, phenols and sulphides, and lubricity improving agents, such as free fat, free fatty acids, esters of alkyl and/or aryl acids, sulphurised fats and lead soaps; such components may be present in amounts of 0.1-10% by weight of the composition.
Patent GB-875825-A (GB)
Title: Improvements in hot water storage cylinders
IPC: F24H9/12
Filed: 1959-10-26
Abstract: 875,825. Hot-water supply systems. MILNER, J. B. Dec. 30, 1959 [Oct. 26, 1959], No. 36114/59. Class 64(1) Hot water is delivered by a pipe a, e.g. from a boiler into a hot-water storage cylinder near the bottom and enters the cylinder beneath the funnel-shaped end b of a pipe B which extends up to near the draw-off a<SP>4</SP>. Losses from back circulation in the system are said to be avoided when boiler heat is reduced or an electric heater C is switched on. As shown the inlet is a horizontal pipe a<SP>2</SP> brazed to a wall boss and a channelextension b<SP>1</SP> of the funnel b is located on the pipe. The pipe B is supported by a clip d at the top and a bracket c at the bottom. If a combined cistern-andcylinder is used, the funnel b and extension b<SP>1</SP> are connected to the wall boss directly and the pipe B extends obliquely to near a side draw-off. In this case, for access to the pipe B, for cleaning, a plug is screwed into a hole aligned with the pipe.
Patent GB-927807-A (GB)
Title: Apparatus gauges for setting or measuring angles
IPC: G01B3/56
Filed: 1960-10-21
Abstract: 927,807. Measuring angles. W. TURNER. Sept. 20, 1961 [Oct. 21, 1960], No. 36159/60. Class 97 (3). A gauge comprises a cylinder 25, or other gauge element having a curved gauging face generated on a predetermined radius about a centre 29, carried at the periphery of a circular table 12 and a cylinder 16 or other gauge element carried by a base 11, the table 12 being rotatable on base 11 about an axis 13 and the centres of cylinders 16, 25 being spaced from axis 13 by the same known distance, the cylinders 16, 25 or other gauge elements being so disposed relative to one another that slip gauges or other linear gauges may be inserted between the curved faces. As shown, hardened bushes 15 are provided at 90 degrees intervals to receive the cylinder 16, and table 12 has two similar gaugecarrying brackets 21, 22 spigoted in a peripheral tee-slot of the table and locked in any position by screws 23, 24.
Patent GB-1123255-A (GB)
Title: Apparatus for feeding solid fuel to a furnace
Inventor: PIETERSE MARIUS VAN UYE
IPC: F23K3/00
Filed: 1965-08-25
Abstract: 1,123,255. Feeding fuel to furnaces. N. V. STOOKWERKE. 23 Aug., 1966 [25 Aug., 1965], No. 36439/65. Addition to 816,745. Heading F4B. Apparatus for feeding fuel or other solids to a furnace comprises a feed screw 8 delivering fuel from a hopper 9 to a tube 10 where air from a generator 14 mixes with the fuel, further air from the generator entering a tube 16 at 17 and via tangential nozzles 20, 21 ensures an even distribution of fuel over the fire bed. The tube 16 has a conical lower end 22 provided with ribs 23. The mixture of fuel and air in tube 10 enters a tube 11 tangentially. In a second embodiment, a plate 12 in an extension 13 of the tube 16 changes the direction of the fuel and air and deflects it down into the fuel conduit 11. Excess air not required in the combustion is vented to atmosphere.