baber/WOPTO huggingface dataset:
Patent GB-756965-A (GB)
Title: Improvements in the production of gases containing sulphur dioxide
IPC: C22B1/10
Filed: 1953-12-02
Abstract: Gases containing SO2 are obtained by roasting finely-grained sulphidic ores, e.g. pyrites flotation concentrates of grain size predominantly below 0.2 mm., in a single stage in an undivided bed (as defined) of roasted material which is fluidized by means of the free oxygen-containing gases, e.g. air or oxygen enriched air, necessary for roasting, which are introduced through a grate from below and by means of the roaster gases formed, wherein, in addition to the main supply of oxygen-containing gases introduced uniformly into the bed from below, a subordinate amount, e.g. 10 per cent. of main supply, of oxygencontaining gases is supplied, together with the sulphidic ore introduced into the bed, or at at least one point immediately adjacent the zone within which the sulphidic ore is introduced into the bed, so that some agglomeration of the ore occurs.  Where the subordinate amount of oxygen-containing gas is supplied together with the ore a mixing burner may be used.  Cinders from the fluidized bed and/or the coarser grained fraction of cinders entrained by the roaster gases and/or roasted ore cinders from other roasting systems may be added together with the additional oxygencontaining gas.  Such cinders should preferably be added at the temperature at which they are produced without appreciale heat loss, and may be mixed with the ore and the mixture suspended in the additional oxygen-containing gas, with consequent predrying of the ore and agglomeration, if the cinders are hot.  The amount of cinder may be 20-40 per cent. of the cinder produced.
Patent GB-1391958-A (GB)
Title: Candles
IPC: F21L19/00
Filed: 1972-07-18
Abstract: 1391958 Candles B L GROSS 18 July 1972 [19 July 1971] 33527/72 Heading C5W Candles are made with wicks which are constrained by the solid wax of the candle in shapes different from the normal shape of the wick so that as the wick burns part of the wick adjacent the flame is freed by the melting of wax and returns to its unconstrained shape. The wick can comprise cotton or string and can have a spring wire of low melting point in its centre or can be located inside a polyethylene tube. Fig. 1 shows a candle 10 having a wick 12 of which the normal shape is a coil and which moves as shown in Fig. 2 as the candle burns. Various other shapes of candle having one or more wicks and in which the flame moves in various paths are illustrated. The wicks need not be entirely embedded within the candle wax but can be attached thereto, e.g. by staples.
Patent GB-1174859-A (GB)
Title: Pigmentary Silicon Carbide
Inventor: COULTHURST ARNOLD EVANS
IPC: C09C1/28
Filed: 1967-07-21
Abstract: 1,174,859. Chemical furnaces. BRITISH TITAN PRODUCTS CO. Ltd. 7 June, 1968 [21 July, 1967], No. 33533/67. Heading F4B. [Also in Division C1] A furnace for the reaction of a silicon halide with an organic compound in the vapour phase consists of a carbon tube 1 mounted within a graphite cylinder 2 which provides a support for carbon fibres 3 which form an insulation and are surrounded by water jacket 4. The ends 5 of said tube are partially enclosed by water-cooled electrical connections 6 which are connected via discs 7 to the supply leads 8, 9 so that the current flows through the tube thereby generating heat. The furnace is provided with a quartz window 11 to enable the furnace temperature to be measured with an optical pyrometer. The upper end of the tube is provided with an injector 13 through which the gaseous reactants are introduced and an aluminium helical coil 14 to induce laminar flow in the gas. An entry port 15 is provided through which an inert gas may be admitted to provide a sheath for the internal wall of tube 1. The furnace produces pigmentary silicon carbide by reacting the silicon halide e.g. silicon monohydrogen trichloride or a silicon tetrahalide with aliphatic or aromatic hydrocarbons, ketones, aldehydes or alkyl halides. Reference has been directed by the Comptroller to Specifications 899,947 and 946,828.
Patent GB-1057950-A (GB)
Title: Stabilised photographic silver halide emulsions
Inventor: HUCKSTADT HARALD
IPC: C07D277/54
Filed: 1965-08-05
Abstract: A compound of formula <FORM:1057950/C2/1> is prepared by refluxing N,N1-dimethylthiourea and chloracetic acid in methanol and recrystallizing the product from methanol/ether.
Patent GB-799626-A (GB)
Title: Method for determination of albumin in fluids, particularly urine
IPC: G01N33/68
Filed: 1956-11-05
Abstract: A composition in tablet form for use in testing urine or other body fluids for albumin, consists of a mixture containing a protein precipitant, a dye indicator changing colour below pH 6, and an effervescent couple consisting of a bicarbonate and an acid.  Protein precipitants used are (1) strong, solid, water-soluble acids, e.g. sulphosalicylic acid or picric acid; (2) sodium tetra- or hexa-metaphosphate; or (3) water-soluble salts, e.g. lead nitrate, sulphate, barium chloride, aluminium sulphate or aluminium chloride. The acid used in the effervescent couple may be an acid of group (1) above, or other strong organic acid, e.g. tartaric, maleic, itaconic, sulphamic, or citric acid. Where the protein precipitant used is an acid or alkali meta phosphate, the albumin is precipitated below its iso-electric point and the dye-indicator used should change colour at pH 2 to 2.5, e.g. Brilliant Green, Crystal Violet, or Cresol Red. When metal salts are used, the alubin is precipitated above the isoelectric point, and the dye-indicator used should change colour near pH 6, e.g. Bromcresol Green, or Diazoresorcinol.  The components are mixed together with a little boric acid and calcium sulphate and formed into tablets.  In use, one or two drops of urine are placed on the tablet.  If albumin is present, the effervescence throws up the precipitated albumin and a colour change results.  In a negative specimen forming soon subsides with no colour change.
Patent GB-1315352-A (GB)
Title: Method for determining co-ordinates
IPC: F41G7/26
Filed: 1968-07-15
Abstract: 1315352 Missile guidance ELTRO GmbH & CO 15 July 1968 [14 July 1967] 33723/68 Addition to 1315351 Heading H4D A missile guidance system of the type described in the parent Specification is provided with a laser radiation source. This simplifies the image-projection optics and gives improved image sharpness at long range. The laser may be a helium-neon device operating in the infra-red, or a pulsed solid device.
Patent GB-302053-A (GB)
Title: Improvements in coil spring couplings
IPC: F16D3/62
Filed: 1927-12-14
Abstract: 302,053. Siegenthaler, E. R. Dec. 14, 1927. Addition, to 239,729 and 279,221. Universal couplings. - Relates to spring couplings in which the looped ends of the springs are clamped fast to supports according to Specification 239,729, and furnished with buflers between the supports inside the springs according to Specification 279,221. By this invention there are three double-faced supporting castings B on one coupling disc C, and three like castings F on the other disc C<1>. Buffers E are attached to all the six faces of the castings F, and the faces of the castings B are burnished where they are to be struck by the buffers. Thus there is one buffer inside each of the six springs J. The castings B, F are supported upon distance pedestals A by bolts G which pass through the discs C, C<1> alternately, and which also serve to clamp the ends of the springs J, which are barrel-shaped as described in Specification 265,381. The buffers E may be of rubber, fibre, or the substance known by the registered trade mark " Ferodo."
Patent GB-398491-A (GB)
Title: Improvements in or connected with apparatus for mixing gases with liquids
IPC: C02F1/76
Filed: 1931-12-07
Abstract: 398,491. Purifying water. BELL BROS. (MANCHESTER 1927), Ltd., BENSON, C. G. and MITCHELL, A. M., Calder Iron Works, Denton, near Manchester. Dec. 7, 1931, No. 33840. [Class 46.] In apparatus for controlling the supply of gas to be mixed with liquid, for example of chlorine to be mixed with water, the gas-supply valve is opened by the pressure of the liquid acting upon a diaphragm and overcoming the pressure of the gas acting upon a second diaphragm which automatically closes the valve when the pressure of the liquid fails or falls below a predetermined amount. The apparatus shown comprises a passage 4, 5, for chlorine controlled by a valve 14, the stem 15 of which is attached to a diaphragm 6 in a casing 7 and having its lower side exposed to the chlorine. The pressure of the water to be treated is communicated through a pipe 10 to the upper side of a diaphragm 9 in an enlarged extension of the casing, the stem 11 of the diaphragm 9 coacting with the upper end of the stem 15. The upper diaphragm may be subject to the pressure of a spring 12 adjustable by a screw plug 13. According to the Provisional Specification, a piston operating in a cylinder to which the water is admitted may replace the upper diaphragm.
Patent GB-389195-A (GB)
Title: Improvements in and relating to fluid pressure indicators
IPC: G01L7/08
Filed: 1931-12-07
Abstract: 389,195. Flow indicator. ELMS, R., 75, Larch Road, Cricklewood, London. Dec. 7, 1931, No. 33859. [Class 12 (iii).] Relates to lubrication indicators of the type in which an indicating member and a dial plate member, one of which is apertured, are adapted to be moved relatively to one another by a pressure responsive device such as a diaphragm and consists in. mounting the indicating member or members. which form substantially a parallel link system. The diaphragm chamber 6 is carried in an openwork casing 1 adapted to be clamped. to a panel by a U-shaped member 4 and screw 3. A pipe conveys pressure fluid to the chamber 6 and causes the fabric diaphragm to move a plunger 12. The plunger engages one arm 14 of a two-armed lever 14, 18 formed by a bent spring strip. The outer end 19 of the arm 18 is notched as shown. Approximately parallel with this arm is a spring strip 22, the outer end 23 of which is notched. An elliptical plate 20 provided with red and white stripes is provided also with notches which can be sprung over the notched ends 19, 23. This plate slides behind a fixed plate 27, having a number of parallel slots 28 through which the white or red stripes show according as the pressure is "on" or "off." The fixed plate may bear the stripes and the sliding plate may be provided with slots. A Bourdon tube :may be used instead of a diaphragm.
Patent GB-853928-A (GB)
Title: Preparation of dustless starch
IPC: C08B30/14
Filed: 1956-11-06
Abstract: In gelatinizing and drying starch to render it dustless and readily dispersible in cold water, moist starch, containing between 25 and 45% of water and, if desired, hydrochloric or sulphuric acid or aluminium chloride, is conveyed through a flash dryer in a current of air having, at the inlet for the starch, a wet bulb temperature ranging between 170 DEG  and 212 DEG F. and a dry bulb temperature within the range of the wet bulb temperature and the temperature at which the starch decomposes, and the gelatinized and dried starch is then separated from the air.  The flash dryer may comprise a duct in which gelatinization and drying of the starch takes place.  The starch and air, and if necessary, steam may be fed into the duct through a mechanical disintegrator such as a pin mill and passed through the duct into a cyclone, wherein the separation of starch from air is effected.  The minimum dry bulb temperatures of the air fed into the mechanical disintegrator and the air leaving the cyclone may be 318 DEG  and 213 DEG F., respectively.  The separated air may be returned to the mechanical disintegrator through another cyclone, into which water is sprayed, a fan and a heater.  Modified starches, starch ethers and esters and dextrins may be treated according to the invention.  Specifications 468,830, 474,320 and U.S.A. Specification 1,899,952 are referred to.
Patent GB-1523625-A (GB)
Title: Carburettor system for an internal combustion engine
IPC: F02M1/00
Filed: 1975-08-14
Abstract: 1523625 Choke valves HONDA GIKEN KOGYOKK 14 Aug 1975 [15 Aug 1974] 33967/75 Heading F1H A carburetter, for an engine having a precombustion chamber 6 connected to the or each main combustion chamber 4 and spark ignition means 7 in each pre-combustion chamber comprises a main carburetter 15 for supplying a first mixture to the main combustion chamber (5), an auxiliary carburetter 16 for supplying a second mixture to the pre-combustion chamber (5), a main choke valve 19 in the intake passage of the main carburetter, an auxiliary choke valve 20 in the intake passage of the auxiliary carburetter, a control element 24 connected to actuate the main choke valve through a spring 25 so that overtravel of the control element after the main choke valve is closed stores energy in the spring and means 56 connected to the control element to move the auxiliary choke valve toward the closed position only during such overtravel of the control element after the main choke valve has closed. First main choke lever 23 is fixed on shaft 17 on which choke valve 19 is mounted off-centre. Second main choke lever 24, the control element, is free to turn on shaft 17, and has a stopper 26; torsion spring 25 biases lever 24 to abut stopper 26 as shown in Fig. 1. Connecting rod 38 is pivotally connected at one end to arcuate slot 27 and at the other end is attached to diaphragm 37, biased by compression spring 39 and subject to the vacuum downstream of main throttle valve 21. Auxiliary choke valve 20 is off-centre mounted on shaft 18 to which first auxiliary choke lever 43 is fixed and on which second auxiliary choke lever 44 is free to turn. Lever 44 has a stopper 47 against which lever 43 is biased by torsion spring 45. Rod 49 connects arcuate slot 46 to vacuum motor 48, which is subject to the vacuum downstream of auxiliary throttle valve 22. A bi-metal spiral spring 30 rotates a lever 33 anti-clockwise as the ambient temperature decreases and through rod 34, lever 24 and spring 25 rotates main choke valve 19 in the closing direction. If the temperature is very low, continuing movement of rod 34 continues to rotate lever 24, against spring 25 and through rod 56 rotates lever 44 and hence lever 43 to move choke valve 20 in the closing direction. Spring 30 is heated by an electrical heater when the engine is running and progressively opens choke valve 19. When the engine is started from cold, as soon as it is running, vacuum acting on diaphragm 37 opens choke valve 19 slightly, against the force of spring 25. Since the force exerted by spring 25 depends on the extent to which lever 24 has been turned by spring 30, the amount choke valve 19 is opened is dependent on the temperature of spring 30. Auxiliary choke valve 20 is moved to the open position, against the force of spring 45 by vacuum motor 50 acting through connecting rod 49. In a modification, Figs. 3 & 4 (not shown) the spring 30 is omitted and manual operation of lever 24 is provided.
Patent GB-648980-A (GB)
Title: Improvements in apparatus for the transfer of gaseous fluids
Inventor: BERTIN JEAN
IPC: F04F5/42
Filed: 1947-12-23
Abstract: 648,980. Exhaust systems. SOC. NATIONALE D'ETUDE ET DE CONSTRUCTION DE MOTEURS D'AVIATION. Dec. 23, 1947, No. 33994. Convention date, Sept. 5, 1946. [Class 7(ii)] [Also in Group XXVIII] Exhaust gas from an I.C. engine cylinder is induced through an orifice C, Fig. 1, by primary air under pressure entering a chamber K through a series of peripheral tangential convergent nozzles T, Fig. 2, and the mixed mixture is delivered to an exhaust manifold where a pressure higher than inlet pressure prevails through an annular opening B coaxial with the inlet C and having its greatest radius smaller than the smallest radius of the inlet nozzles T and its smallest radius greater than the radius of the inlet C. The path of the primary fluid is first swirling-centripetal, then axial.
Patent GB-867687-A (GB)
Title: Improvements relating to rocket motors
Inventor: POUND MAURICE ARTHUR
IPC: C04B41/48
Filed: 1958-10-23
Abstract: The erosion resistant properties of a choke insert machined from commercially pure graphite are increased by vacuum impregnation with phenol formaldehyde, silicone, epoxy, urea formaldehyde, or melamine resin, followed by curing of the resin. The graphite may have a density of 1.66, a Brinell hardness of 50, a modulus of elasticity of 0.8 x 106 p.s.i., a tensile strength of 2200 p.s.i., and may contain minor amounts of sodium, calcium, boron, aluminium, and iron. Examples are given.
Patent GB-1498249-A (GB)
Title: Filters for infusion and transfusion apparatus
IPC: B01D29/01
Filed: 1975-08-15
Abstract: 1498249 Blood filter S HUSTED-ANDERSEN [trading as TRANSCODAN SVEN HUSTED-ANDERSEN] 15 Aug 1975 [29 Aug 1974 8 March 1975] 34133/75 Heading B1D A filter for use in blood transfusion or infusion comprises a filter sheet 1 in a housing 5, 8, the downstream side of sheet 1 being supported by a generally spiral rib 10 defining a spiral downstream chamber with a central outlet 11. The two halves of the housing fit together with a tongue and groove joint 14, 15 which may also be welded. The housing has an inlet 6 and an outlet 12, shown as incorporating a cannula 16 with a protective cap 16A. Also shown is a removable cap 17 covering a cap 19 which may be pierced by a syringe cannula for injecting medicine into the blood stream passing through the filter, restriction 20 preventing this cannula from damaging filter sheet 1. In Figs. 5, 6 (not shown) the filter housing is generally rectangular and lies at right angles to the common axis of inlet 6 and cannula 16. A plate (21) with a central aperture (22) defines a passage (6A) leading to the upstream side of filter sheet 1.
Patent GB-776735-A (GB)
Title: Method for vulcanizing blends of butyl rubber and gr-s
IPC: C08L23/22
Filed: 1955-11-29
Abstract: A mixture of a major proportion of Butyl rubber and a minor proportion of a butadienestyrene rubber is cured with paraquinone dioxime and an oxidizing agent.  Specified Butyl rubbers are the copolymers of isobutylene with butadiene, isoprene, dimethylbutadiene, dimethallyl, myrcene and allocymene, while specified oxidizing agents are lead oxide and benzothiazyl disulphide.  Paraquinone dioxime dibenzoate which acts like the dioxime may also be used mixed with lead oxide.  A small amount of sulphur may also be present, as may also the usual vulcaniztion ingredients.
Patent GB-282438-A (GB)
Title: Improved method of and means for regulating combustion in furnaces
IPC: F23N1/02
Filed: 1927-12-16
Abstract: 282,438. Smoot Engineering Corporation, (Assignees of Smoot, C. H.). Dec. 16, 1926, [Convention date]. Air supply and draught, regulating; stoking.-A method of controlling a combustion regulator in one or more furnaces comprises the continuous production of a pressure which is a desired intermediate to that of the forced draught and a pressure which is a function of the operation of the combustion regulator and the combustion regulator by variations of the said intermediate pressure. Fig. 1 illustrates the more elementary form of the invention applicable to a single furnace. ' A bye-pass 8 connects a point 11 in the air supply main in front of the inlet damper 6 with a point 12 above the fuel bed. There are two regulating-valves 9, 10 in the two limbs of the bye-pass and at an intermediate point a branch 13 communicates with a diaphragm chamber 14 operatively connected to the damper 6. Under conditions of equilibrium the setting is such that atmospheric, pressure obtains within the chamber 14 and departure from this due, say, to changes in the fuel bed or variations in the supply pressure acts to move the damper 6 so as to restore the pressure at 12 to the desired normal negative pressure. By relative adjustment of the valves 9, 10 the normal pressure at 12 is varied. Fig. 2 illustrates the more complex form of the invention as applied to a battery of boilers. A series of boilers 1 supply steam to a common header 2 and from a point 63 in the common air supply main 3 (corresponding to the point 11 in Fig. 1), a bye-pass 13 proceeds via a master controller 12 and branches 14, 15, 16 to points of variable pressure, viz., 21 beyond the boiler tubes, 33 above the fuel bed and 38 to be described below. A valve 13<a> and individual valves 17 for each branch 14. 15. 16 correspond to the valve 9 of Fig. 1, and the valve 10 of Fig. 1 has its counterpart in each of the valves 20, 32 and 40. The control of dampers 5 and 8 is thus seen to be similar to that of damper 6 in Fig. 1. In the case of the branch 16 which controls the stoker 11, the point 38 of variable pressure is at the suction inlet of a fan 37 coupled to the stoker and producing a negative pressure at 38 which varies inversely with the square of the fan and therefore of the stoker speed. The pressure in the forced-draught main 3 thus ultimately controls all the regulating-devices; it is itself maintained inversely as the steam pressure by a control acting on the main fan 59, the device 47 used for this purpose comprising a fan-motor controller connected to a lever 52 subjected to the steam pressure at 51 and to the air pressure at 55. Specification 300,512 is referred to.
Patent GB-293639-A (GB)
Title: Stand for pedal bicycle
IPC: B62H1/00
Filed: 1927-12-17
Abstract: 293,639. Booth, P. J. Dec. 17, 1927. Supports attached to cycles. - Supports for bicycles are formed of flat strip metal members A, A<2> riveted together, the members A being apertured at A<1> to engage the rear wheel spindle, and the member A<2> provided with metal strips B constituting a clip to engage the rear edge of the mud-guard when the support is raised out of use. A stop lug C, formed of a bent metal strip, is riveted to one of the members A and engages the cycle frame to hold the support in the operative position.
Patent GB-1361523-A (GB)
Title: Reagent composition for the detection of nitrite
IPC: G01N33/02
Filed: 1972-07-21
Abstract: 1361523 Test paper MERCK PATENT GmbH 21 July 1972 [19 Aug 1971] 34259/72 Heading G1B A reagent composition for the detection of nitrite comprises an absorbent carrier, a component which couples with diazonium salts, an acid, and a diazotizable amine of the formula in which R' is hydrogen or a carboxyl or sulphonic acid group, R<SP>2</SP> is #-hydroxyethylsulphone or the corresponding sulphuric acid ester, and R<SP>3</SP> is hydrogen or an alkoxy group. The carrier may be paper. The amine may contain a 4-aminophenyl, 3-amino-4-carboxyphenyl, 3-amino-4- sulphonic acid-phenyl or 3-amino-4-sulphonic acid-5-methoxyphenyl radical substituted with the said sulphone grouping. The coupling component may be an amine or α-naphthol; the acid may be tartaric, citric, oxalic, malic, malonic, succinic, glutaric or adipic acid.
Patent GB-918117-A (GB)
Title: Improvements in or relating to pyrophoric lighters
IPC: F23Q2/167
Filed: 1961-09-25
Abstract: 918,117. Cigarette lighters. KIASHEK, G. Sept. 25, 1961, No. 34287/61. Class 75 (3). A burner valve for a pyrophoric lighter comprises a metallic casing 1 into which a metallic inner casing 6 is screwed to compress an annulus 5 of plastic materialagainst a gas distribution plate 4 in the base of the casing, thus controlling the flow of gas by changing the effective gas flow paths provided by grooves on the surfaces of the plate 4. The inner member 6 is fixed to a gear-wheel 19 meshing with an idler wheel meshing with a further gear-wheel secured to a manuallyoperated wheel. The idler wheel may be omitted. Alternatively, the gear-wheel 19 is rotated by a toothed rockable lever having a operating end disposed outside the lighter casing. Due to the difference in expansion coefficients of the plastic annulus 5 and the metal parts, the gas flow paths are automatically restricted as the ambient temperature increases. The inner member 6 also has a valve 9 which is lifted by gas pressure when the cap of the lighter permits movement of the stem 8. Specification 881,275 is referred to.