baber/WOPTO huggingface dataset:
Patent GB-248349-A (GB)
Title: Improvements in processes for the treatment of copper-containing sulphide ores and the like
IPC: B03C1/015
Filed: 1926-02-11
Abstract: 248,349. Verein fur Chemische und Metallurgische Produktion. Feb. 26, 1925, [Convention date]. Void [Published under Sect. 91 of the Acts]. Roasting. - Copper-containing sulphide ores, preferably of low lead and zinc content, are roasted in fine grained condition at a relatively low temperature with a regulated supply of air, and the roasted product is separated into magnetic and non-magnetic fractions. The non- magnetic fraction is leached in the usual way for the removal of the whole or the greater part of the copper, while the magnetic fraction is reroasted either alone or along with fresh ore.
Patent GB-384839-A (GB)
Title: A device for extracting screws
IPC: B25B27/18
Filed: 1932-02-10
Abstract: 384,839. Extracting screws. GROVES, W. W., 30, Southampton Buildings, London. -(Greenfield Tap & Die Corporation ; Greenfield, Massachusetts, U.S.A.) Feb. 10, 1932, No. 4003. [Class 83 (iii).] A screw extractor adapted to engage in a recess drilled in the broken screw has a tapered body 10, Fig. 1, with a number of parallel helical threads 11 of opposite hand to those on the screw and having lead angle of less than 45‹. The threads are spaced apart to leave flat helical surfaces 14 therebetween, and are divided into rows of thread sections by flutes 18 of substantially constant width. Each thread portion has a cutting face 20 on its leading end, and the length of a thread portion measured along its crest is less than the length of crest removed by a flute. In modifications of the cutting face 20, Fig. 2, and heel surface 21 on the thread portions, the cutting faces may be substantially radial and the heel faces at considerable angles to the radial plane. The threads have one face 12 substantially normal to the body, the face 13 being inclined at about 45‹, Fig. 1a, or both faces may be normal to the body : the threads have flat crests 15. Other cross sections of extractor are illustrated in the Specification.
Patent GB-396795-A (GB)
Title: Improvements in or relating to shoe supporting forms
IPC: A43D5/02
Filed: 1932-02-11
Abstract: 396,795. Boot-making machines. BRITISH UNITED SHOE MACHINERY CO., Ltd., Union Works, Belgrave Road, Leicester.-( United Shoe Machinery Corporation ; 140, Federal Street, Boston, U.S.A.) Feb. 11, 1932, No. 4042. [Class 17 (i). Trimming.-A shoe supporting form, especially for use in rounding and/or channelling by machine soles on shoes, but partly fills the forepart of the shoe heightwise, supports the upper adjacent to the sole against external guiding pressure, is expansible laterally to fit different shoes and has a slidable heel-piece for adjustment of length. Side members 12, 14 pivoted at 16 provide a laterally-expansible frame and carry at their free ends, with limited tip and limited swing about pivots 30, form members 32, 34 shaped to conform to the inside and outside contours of the internal surface of the shoe bottom. Similar devices with oppositely-shaped forms are used for the two shoes of a pair. A screw 20 carries a resilient member 48 adapted to engage the shoe upper to hold the form against the shoe bottom, limited play being allowed by upturned flanges 50. A heel piece 40 has a stem 38 slidable freely through lugs 42 and held against inward movement by a spring clutch 44. A finger-piece 26 is secured to a slide carrying a cam 24 comprising an upturned flange inclined to the side member 12 for engaging a member carried by the member 14 to spread the form members into form engagement with the sides of the upper. Specifications 240,202, [Class 17 (i), Boots and shoes, Apparatus for making &c.], and 396,710 are referred to.
Patent GB-103383-A (GB)
Title: Improvements in Safety or Blow-off Valves for Expansible Fluids.
IPC: F16K17/08
Filed: 1916-03-18
Abstract: 103,383. Andersson, K., and Greenwood & Batley. March 18, 1916. Safety-valves.-A safety-valve loaded by a spring or weighted lever has the valve member and seat provided with radial extensions so shaped as to form a passage of gradually increasing crosssectional area such that the escaping fluid is reduced to atmospheric pressure before leaving the passage. In the form shown in Fig. 2, the valve member g is adjustably loaded by a spring j and is guided by a tail-piece h. The extension l on the valve member is provided with a turned-over lip n to increase the power of the escaping fluid to lift the valve; this lip may also be surrounded by a cylindrical casing o so as to form a narrow passage p, through which the escaping fluid acts to cause a reduction of pressure above the valve member. The extension f on the seat is formed with a groove r communicating with the outlet or the atmosphere through ports s. This feature may be dispensed with.
Patent GB-1520041-A (GB)
Title: Cleaning of gas produced by the pressure gasification of coal
IPC: C10K1/02
Filed: 1976-02-03
Abstract: 1520041 Cleaning gas H HOLTER 3 Feb 1976 [6 Feb 1975 28 Feb 1975 6 March 1975 (3) 7 March 1975 2 May 1975 26 June 1975] 4112/76 Heading C5E Gas produced by the gasification of coal with air and/or steam is cleaned by washing with an oil which is continuously circulated in a closed circuit and solids and tars are continuously removed from the oil and returned to the gasification. The gas is washed with portions of coal tar oil at 2,3 and 5 and a stream containing tar and solids is separated from the oil at 8 and can be treated in distillation tower 12 prior to recycle of tar and solids to the gasification. The gas can be cooled at 1 (e.g. from 550‹ C. to 300‹ C.) by indirect heat exchange with a heating oil which delivers heat to the distillation unit 12, to a reheater 7 for the cleaned gas and to a boiler 19 or by washing with coal tar from which heat is removed by heat exchange at 30 and 31 with the heating oil. Hydrogen sulphide can be removed from the gas by a powdery hydrogen sulphide absorbent which is either added at 23b and removed at 25 or is added along with the washing oil at 5 and removed at 6. centre and a hole in the external surface communicating with the void centre. The amphora particles can be prepared from a slurry containing alumina; cobalt and molybdenum compounds are either incorporated in the alumina slurry or impregnated into the amphora particles. The amphora catalyst can have a diameter of 1À5-4À0 mm and can be used in a fixed bed at 200-600‹ C. and up to 10,000 psig. In Examples, sulphur is removed from a catcracked 191-427‹ C. gas oil, and a 193-263‹ C. straight run kerosene and sulphur and nitrogen are removed from a 204-549‹ C. vacuum gas oil.
Patent GB-305634-A (GB)
Title: Spring tyre for motor vehicles
IPC: B60C7/18
Filed: 1929-02-08
Abstract: 305,634. Giacosa, Q. A. Feb. 8, 1928, [Convention date]. Metallic spring bodies and cores.- Spring wheels for vehicles are formed with leather tubes enclosing springs to replace the pneumatic tubes in ordinary pneumatic tyres. The leather tube 2 is formed open at the top 6 and is stiffened by a compound metal and leather band 5 at its base. The inner and outer spring elements 7, 8 are mounted on studs 9 in the lower stiffening band and on studs 4, 12 in an upper stiffening band 13 disposed' across the opening 6 of the leather tube which is laced across after the insertion of the springs. The outer spring element is of substantially spherical form to support the walls of the leather tube, which is forced into the outer cover and the whole mounted on a metallic cradle formed of two bands 10, 11 secured together by small screws.
Patent GB-451940-A (GB)
Title: Improvements in or relating to cash registers
IPC: G06C11/02
Filed: 1935-02-11
Abstract: 451,940. Cash registers. MITCHELL, K. A., 273, Mount Pleasant Road, Tottenham, London. Feb. 11, 1935, No. 4295. [Class 106 (i)] Indicators.-The shutter mechanism for obscuring the indicators of a cash register is operated or controlled solely by the movement of differential setting-slides for the recording and/or indicating mechanism. As shown, indicator drums 16 are viewable through windows 15 that may be simultaneously obscured by the counterclockwise rocking of shutters 13 about the indicator shaft 14. This is effected, against the action of a spring 10, by the downward setting movement of one or more differential slides 1, the cam-shaped lower end 6 of each of which co-operates with one of a series of rollers 8 mounted on arms 7 extending from a shaft 17, the rocking of the shaft being communicated to the shutters through one of the arms 7 and a link 11. The shutters are maintained in obscuring position while a slide is displaced by the co-operation of the associated roller 8 with the flat underside 5 of the slide. The levers 7 may be connected to a common shaft to which the shutter mechanism is attached.
Patent GB-275874-A (GB)
Title: A device for use in laying and lighting fires
IPC: F24B15/00
Filed: 1927-02-16
Abstract: 275,874. Cookson, V. G., and Cookson, H. Feb. 16, 1927. Stands for supporting fuel when laying a fire comprise a grid supported on legs and formed of a stout wire frame a carrying cross-wires f. The legs may be formed by downward extensions of the frame members, or may be attached to them so that they may be folded. As shown in Fig. 3, the device may comprise two superposed grids, and further grids may be connected to the legs so that a complete fire may be laid in the device before it is placed in the firegrate.
Patent GB-892281-A (GB)
Title: Improvements in or relating to submarine cables
Inventor: DEAN JOHN NORMAN
IPC: H01B11/18
Filed: 1959-02-06
Abstract: Conductors for lightweight coaxial submarine cables (see Group XXXVI) are of copper-based alloy containing zirconium.  Suitable alloys contain 0,01-0,5% zirconium, preferably 0,05-0,2% by weight and cadmium may be added in the range 0,1-1,5%, preferably 1% with 0,08% zirconium to give improved fatigue resistance and bending properties. Specifications 703,782 and 740,647 are referred to.
Patent GB-666154-A (GB)
Title: Improvements in or relating to a process of sulphonation
Filed: 1949-02-17
Abstract: <PICT:0666154/IV (b)/1> Hydrocarbons containing at least one group of the type -CH = CH- are sulphonated by mixing a stream of liquid sulphur dioxide containing dissolved sulphur tri-oxide with a stream of liquid sulphur dioxide containing the hydrocarbon dissolved therein, whereby the hydrocarbon is sulphonated and heat of sulphonation is liberated, and flowing the mixed streams through a nozzle and evaporating the liquid sulphur dioxide by means of the heat of sulphonation, whereby the sulphur tri-oxide becomes combined with the hydrocarbon at a temperature of at least 20 DEG  C. Preferably the mixture sprayed from the nozzle passes under substantially adiabatic conditions into a collection chamber maintained at substantially atmospheric pressure, but reduced pressure may also be used.  In the illustrated apparatus, the two streams are passed by tubes 19 and 26 respectively into mixing nozzle 20 and thence to chamber 27 (which is provided with a manometer 37 and thermocouple 38 and preferably has a packed section 28), the liquid sulphonation product being withdrawn at 31 and gaseous sulphur dioxide at 32.  Suitable starting materials are aromatic hydrocarbons and olefines, lists of both of which are given. Examples describe the preparation of benzenesulphonic acid, dodecylbenzene mono-, di- and penta-sulphonic acids, sodium hydroxyhexadecane sulphonate (obtained by the action of caustic soda on the addition product of hexadecene and sulphur trioxide), and carbyl sulphate (which yields ethionic or isethionic acid by hydrolysis with cold or warm water respectively).
Patent GB-1126521-A (GB)
Title: Improved arrangement for testing dielectric loss
Inventor: BAKER WILLIAM PERCIVAL
IPC: G01R27/26
Filed: 1966-02-01
Abstract: 1,126,521. Measuring dielectric loss; a. c. bridges. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Jan. 3, 1967 [Feb. 1, 1966], No.4425/66. Heading G1U. The dielectric loss of a capacitor X is measured by connecting it in a bridge fed from an A. C. voltage source HV, near to but different from the normal supply frequency, and having two adjacent arms La, Lb inductively coupled together, the out of balance voltage of the bridge being picked up by a search coil inductively coupled to the bridge and passed to a detector 5 through an attenuator which attenuates signals of the voltage source frequency to a lesser extent than interference signals. The third arm of the bridge comprises a variable standard capacitance S and the search coil is in two parts Lc, Ld. The latter form two arms of an auxiliary bridge of which the other two arms form the attenuator and comprise a series RC network 7, 6, and a parallel RC network 9, 8 respectively.
Patent GB-507098-A (GB)
Title: Drilling apparatus for drilling branch mains or pipes when under pressure
IPC: F16L41/04
Filed: 1938-02-12
Abstract: 507,098. Drilling mains under pressure. COOKE, F. Feb. 12, 1938, No. 4437. [Class 83 (iii)] In a device for drilling mains under pressure, of the kind comprising a drilling head a attached to a split saddle E on the main F, with the interposition of a shut of valve V, the drill spindle B carrying an annular cutter B<1> and a centre drill B<2> is supported by a sleeve b which is slidable within a bearing G of the head a. The sleeve has an easy fit on the spindle and makes contact therewith by means of end flanges b<1>, b<2>, either or both of which may be packed, and external packing b<3> is provided. A' piston or spider C is attached to the forward end of the sleeve and in operation the sleeve and spindle are in the retracted position shown in Fig. 1 until the valve V is opened. The spindle is then rotated by gearing in a sliding bracket A which is fed forwards by a screwed spindle B<4> and the sleeve b remains stationary until the bracket A meets the flange b<2> (as shown) dotted in Fig. 1. Further advance of the bracket and spindle carries forward the sleeve and spider C so that the spindle will be supported near the drill whilst the main is being perforated, a flange a<4>, Fig. 4, in the head a limiting the axial motion of the sleeve. The spider C may carry anti-friction parts bearing on the head a.
Patent GB-556475-A (GB)
Title: Improvements in and relating to the manufacture of metallic magnesium
IPC: C22B26/22
Filed: 1942-04-03
Abstract: 556,475. Magnesium. MAGNESIUM METAL CORPORATION, Ltd., and SPOOLER, E. C. R. April 3, 1942, No. 4498. [Class 82 (i)] The condensation of magnesium by chilling a mixture of magnesium and carbon monoxide obtained by reaction of magnesium oxide with carbon is effected by means of a non-oxidizing, neutral, or reducing condensable gas introduced as a liquid but used for chilling in a gaseous form. The gas is preferably a hydrocarbon having a boiling-point between -20‹C and +20‹C; or a mixture of hydrocarbons having boiling points within the stated range may be used. A number of suitable hydrocarbons are specified. the preferred hydrocarbon being butane. The condensable gas is introduced into the chilling. apparatus as a liquid at a temperature above its boiling-point, that is, under, pressure, through a nozzle or expansion valve, the resulting drop in pressure effecting vaporization. In the plant diagrammatically illustrated, the mixture of magnesium and carbon monoxide from the furnace a is chilled in a cone b to which butane or the like is supplied in liquid form and from which it emerges in gas or vapour form as a result of its passage either through an expansion valve e' or through suitably shaped nozzles c. The mixture then passes through a cooler f and a filter or electrostatic separator l, magnesium dust being withdrawn through outlets g, m. Hot gas passes through a pipe p to cooling or refrigerating apparatus q from which the condensed medium is returned through a pipe s to the cone b. Specifications 381,1115, 448,536, and 556,474 are referred to.
Patent GB-485950-A (GB)
Title: Improvements in knives
IPC: B26B9/02
Filed: 1937-02-15
Abstract: 485,950. Knives. DERBY, J. Feb. 15, 1937, Nos. 4505 and 31007. [Class 30] In table and like knives having a serrated edge made by grooves on one side the edges c at the ends of the grooves are made longer than the intervening edges d. The ungrooved face may be convex or rounded near the cutting edge. 485,952. Powder - puffs. HASSID, M. A. March 15, 1937, No. 7527. [Class 131] A powder-puff comprises two discs 1 having a soft or pile-like surface, such as fabric or soft leather, secured, by adhesive such as a cellulose glue or by sewing, to a disc 2 of sponge rubber, preferably not vulcanized. The adhesive may be applied as an annular coating to the outer discs 1 and/or as annular coatings 4 to the sponge rubber disc 2, or the discs may be adhered to each other over the whole of their opposed faces or along intersecting lines. A peripheral covering 5 in the form of a flat silk cord or a felt tube is applied by a cellulose glue either before or after the discs are secured together. The discs 1, 2 may be of circular or polygonal or any outline and may be stamped in large numbers from sheets, the adhesive being applied by a machine. The powder-puff may be combined with a handkerchief 7 which may replace one of the discs 1.
Patent GB-404156-A (GB)
Title: Improvements in and relating to steam turbines
IPC: F01D1/02
Filed: 1933-02-14
Abstract: 404,156. Steam turbines. BROWN, E., 8, Bahnhofweg, Baden, Switzerland. Feb. 14, 1933, No. 4510. [Class 110 (iii).] In a multistage turbine plant in which the base load is low compared with the full load, efficiency while running on base load is increased by bye-passing the steam from the H.P. stages to condenser before it reaches the L.P. blading, which latter then rotates in condenser vacuum. In Fig. 1, at base load, steam supplied through valves 4 to H.P. sections 1, 2 is bye-passed by a conduit 5 controlled by a valve 7 to the condenser 6, the L.P. stage 3 then running idly in vacuum. An annular valve may be arranged between the stages 2, 3. At higher loads the L.P. section 3 is put into operation, and additional steam may be supplied to an interstage point by a valve 8. The valve 7 may function as a throttle valve. In Fig. 2, the exhaust from the H.P. stages 1, 2, passes directly to the condenser 14 at base loads, the valve 15 being open, but at high loads, this valve being closed, it passes through the divided-flow L.P. stage 3, 3<1>. In order to prevent disturbance when the L.P. stage is out of action, a geared H.P. stage 10 may be brought into use. The exhaust of this turbine may pass by a pipe 11 to the stage 1 or by a pipe 19 to an intermediate stage. An additional condenser 26 of lower vacuum, as described in Specification 378,803, may be provided. In this case a byepass valve is provided at 27, and supply to the L.P. section may be cut off by a valve 28. The air-extractor 30 of the condenser 14, which may be an ejector actuated by steam tapped from the stage 2, may deliver to the condenser 26. In Fig. 3, an H.P. stage 10 is combined with a radial-flow double-rotation turbine 2 having axial-flow L.P. blading 3, 31, which may be rendered inoperative by opening a valve 24 leading to the condenser. The turbine 10 drives a generator 20 parallel to the generators 21, 21<1>, and may exhaust into the admission of the radial-flow turbine 2 or into an intermediate stage.
Patent GB-924913-A (GB)
Title: Improvements in or relating to air distributors
Inventor: THIRD ALEXANDER DAVIDSON
IPC: F24F13/068
Filed: 1961-02-07
Abstract: 924,913. Ventilators. THERMOTANK Ltd. Jan. 30, 1962 [Feb. 7, 1961], No. 4548/61. Class 137. A grille for an air distributer comprises a number of sections, each presenting a curved discharge face 17 having a number of apertures 15, the sections being interconnected in stepped relationship to limit the extent of depression or projection of the grille as a whole in the direction of air movement through the grille. As shown, the grille is mounted in a casing 10 and includes four identical sections 11-14, preferably of synthetic resinous material, which may be part cylindrical (as shown), or partspherical in form. A bracket portion 16 at one end of each section is used in joining adjacent sections. The apertures 15 of each section may be in the form of equi-spaced slots, with a halfwidth slot at the end opposite to the bracket 16, or may alternatively be circular, the axial length of each aperture being substantially equal to the slot width or aperture diameter.
Patent GB-565736-A (GB)
Title: An improved wheel for vehicles
IPC: B60B19/00
Filed: 1943-03-22
Abstract: 565,736. Vehicle wheels. JONES, G. O. March 22, 1943, No. 4585. [Class 144 (i)] A vehicle wheel consists of a hub a having ribs d fitted with stub-spokes C to which radial tapered leaf-springs b are bolted. A front plate h is secured by nuts c and studs j to the hub a. No rim is provided, the springs b bending under the weight of the vehicle.
Patent GB-1242794-A (GB)
Title: Method of processing steel
Inventor: GRANGE RAYMOND ANDREW
IPC: C21D8/00
Filed: 1969-01-28
Abstract: 1,242,794. Heat-treating steel. UNITED STATES STEEL CORP. Jan. 28, 1969 [Jan. 30, 1968], No. 4698/69. Heading C7A. Carbon or low-alloy steels are cold-worked to give at least a 50% reduction in cross-sectional area and are then heated to a temperature (T x   20)F., where T x  is governed by the composition of the steel according to the formula T x  = 1385 - (25 x % Mn) + (40 x % Si) - (26 x % Ni) + (42 x % Cr). The steel is then quenched, preferably in water, to produce a structure of martensite fibres in ferrite, and may be subsequently tempered, e.g. at 400F., and/or cold-worked, to further modify the properties. The starting material may be in the hot-rolled condition, or may have been heattreated to improve its ductility. The steel may be heated by induction, direct resistance, molten salt or molten lead, and should not be held at temperature for longer than is necessary for uniformity of temperature to be reached.
Patent GB-1097423-A (GB)
Title: Thermoelectric elements and assemblies thereof
IPC: H01L35/32
Filed: 1965-02-03
Abstract: 1,097,423. Thermoelectric devices. T. M. ELFVING. Feb. 3, 1965 [Feb. 10, 1964], No. 4737/65. Heading H1K. [Also in Division F4] A thermoelectric assembly comprises a first metal tube bearing two semi-conductor bodies of opposite conductivity types, each body being also connected via a metal junction element to a further semi-conductor body of respectively opposite type each of the further bodies being connected to a further metal tube; the arrangement forms two parallel pipes for heat transfer fluid flow. Fig. 1 shows an assembly comprising a first bridging tube 32a soldered to thermoelectric elements 35 of opposite conductivity types each element being soldered to a metal tubular junction element 34a, 34b each of which is soldered to another thermoelectric element 35a, each soldered to another bridging tube 32b, 32c. The bridging and junction tubes are mounted on ceramic tubes 30, 31, 33, of aluminium oxide or beryllium oxide to form conduits for fluid flow adjacent the hot and cold junctions. Several examples of multiple constructions are described comprising two dimensional and three dimensional assemblies; fluid pipes of different diameter may be used and one set of junctions may be associated with fins instead of a pipe for heat exchange; several different fin arrangements are described. The heat exchange liquid may consist of a volatile medium to provide a liquid/vapour system. The arrangement may be used for air conditioning apparatus when additional heating or cooling may be provided or for ice making and the units may be embedded in foam or powder. Reference is made to arrangements having increased thermoelectric energization with distance along the fluid flow path, where the temperature difference between hot and cold junctions increases; this is achieved by selecting the number of series/ parallel elements at each stage and improves efficiency.