baber/WOPTO huggingface dataset:
Patent GB-1535970-A (GB)
Title: Method of extracting a metal from a melt containing the metal
IPC: C22B25/06
Filed: 1976-02-18
Abstract: 1535970 Extraction of metal from a melt P A WRIGHT 3 March 1977 [18 Feb 1976] 06340/76 Heading C1A A metal is extracted from a melt containing the metal by injecting into the melt a thermally balanced mixture comprising a mixture of sulphur dioxide with air or oxygen and a gaseous or liquid hydrocarbon to form a sulphide of the metal, the said melt being capable of reacting with gaseous sulphur produced from the sulphur dioxide to form a said sulphide, and the proportions of the components of the thermally balanced mixture being such that the gaseous reaction products from such a mixture shall have a minimum temperature determined by the liquidus temperature of the melt into which said reaction products are to be injected or the liquidus temperature of the products of reaction between the components of the melt and the injected gaseous reaction products, whichever is the greater, and that the partial pressure of oxygen in such gaseous reaction products is in accord with the desired composition of the melt. The thermally balanced mixture may be generated from sulphur dioxide recovered from exhaust gases. Recovery of tin from slags is exemplified, the thermally balanced mixture being introduced into a slag bath through at least one tuyere or injection lance which is independent of the main furnace heating system.
Patent GB-525727-A (GB)
Title: A method of, and a tool for, removing packings from heat exchange and like apparatus
IPC: B25B27/00
Filed: 1939-02-27
Abstract: 525,727. Stuffing-boxes. WILKINSON, F. C. W., and CRANE PACKING Ltd. Feb. 27, 1939, No. 6419. [Class 122 (v)] A tool for extracting packing from stuffing- boxes consists of a shaft 1 with a handle 2 and a fluted extension 3. The ends of the ribs 6 between the flutings are chisel or like shaped to incise or pierce the packing before a withdrawing action is exerted on the tool. The shaft 1 may have a guiding extension 8 of smaller diameter and a collar 5 to control the extent to which the fluted extension is applied to the packing material.
Patent GB-420886-A (GB)
Title: Improvements in and relating to means for reducing static electrical effects
IPC: H03G11/00
Filed: 1933-03-03
Abstract: 420,886. Wireless receiving systems ; thermionic valves. BRITISH THOMSONHOUSTON CO., Ltd., Crown House, Aldwych, London.-(Saxton, H. L. ; 106, East College Avenue, State College, Pennsylvania, U.S.A.) March 3, 1933, No. 6537. Void [Abridged as open to inspection under Sect. 91 of the Acts, Sept. 30, 1933]. [Classes 39 (i) and 40 (v)] A limiting valve is interposed between an aerial circuit and the input circuit of a radio receiver to reduce the amplitude of atmospheric and other disturbances. In one embodiment, the aerial circuit 1, 2, Fig. 1, feeds the control coil 3 of a magnetically controlled valve 4 whose polarizing field is produced by a coil 5 and adjusted to such a value that signals of above a predetermined amplitude do not produce any increase of anode current. The anode circuit is coupled by a transformer 8 to the receiver 9, the effects of the interelectrode capacity of the valve being balanced out by connecting the earthed cathode to a properly chosen intermediate point 6 on the coil 3. In other embodiments a neutralized triode or screen grid valve is given a characteristic of the form B or C, Fig. 6, by the inclusion of resistances such as 12, 14, Fig. 5, in the anode and control grid circuits respectively and /or reducing the cathode heating current. The characteristic may be varied at will between arbitrary limits such as B and C, Fig. 6, by varying the position of a tapping on a potentiometer 17, Fig. 6, supplying a resistance 19 from which are tapped anode and grid potentials.
Patent GB-990793-A (GB)
Title: Catalytic fluorination of organic compounds
Inventor: VECCHIO MARTINO
IPC: B01J27/06
Filed: 1962-02-20
Abstract: Fluorinated and/or fluorochlorinated aliphatic hydrocarbons are prepared by passing a chlorinated aliphatic hydrocarbon with gaseous hydrofluoric acid and, optionally, chlorine at a temperature of 100 DEG  to 500 DEG  C. over a catalyst containing thorium fluoride.  An inert gas may also be present.  The catalyst may be supported, e.g. on active carbon, and may be combined with aluminium and/or chromium fluoride and, optionally, with one or more oxides or basic fluorides of aluminium, chromium or thorium. Examples are given.ALSO:A catalyst for the fluorination of chlorinated aliphatic hydrocarbons (see Division C2) comprises thorium fluoride which may be supported on an inert support such as active carbon or may be combined with fluorides of aluminium or chromium and/or one or more oxides or basic fluorides of metals such as chromium, aluminium and thorium.  Various methods of preparation are described.  The catalyst may be re-activated by heating at a temperature below 600  DEG C. in a light current of air or at a temperature below 800  DEG C. in a current of air and steam.
Patent GB-786886-A (GB)
Title: Compositions containing solvents, swelling agents and softeners for polyesters of terephthalic acid and aliphatic dihydroxy-compounds
IPC: C08K5/00
Filed: 1954-03-05
Abstract: A solvent, softener or swelling agent for a polyalkylene terephthalate is (a) a primary, secondary, or tertiary aromatic amine; (b) a heterocyclic compound containing nitrogen in the nucleus and containing an exocyclic primary, secondary or tertiary amino group or (c) a hydrogenated derivative of (a) or (b).  The compound preferably has the formula R1NR2H in which R1 is an aromatic or partially hydrogenated aromatic radical, a heterocyclic or partially hydrogenated heterocyclic radical and R2 is hydrogen, a lower alkyl group or any of the radicals represented by R1.  Preferably R1 is <FORM:0786886/IV (a)/1> in which R3 is a lower alkyl group. Reference is also made to derivatives of cyclohexene, cyclohexadiene and quinoline.  The compounds may be nuclearly substituted by hydroxyl, lower alkyl, lower alkoxy, nitro, aldehyde, keto, acid, ester or nitrile groups or by halogen atoms.  The solutions may contain water, methanol, methyl acetate or petroleum ether as non-solvent.  Diluent may be added, e.g. naphthalene, diphenyl, tetrahydronaphthalene, xylene, methylnaphthalene or mesitylene.  A table gives the relative solubilities of polyethylene terephthalate in (1) aniline; (2) n-monomethyl aniline; (3) 3-chloraniline; (4) 3-aminotoluene; (4) 1-naphthylamine; (5) diphenylamine; (6) 4-aminobenzoic acid methyl ester; (7) 4-aminoacetophenone; (8) 2-aminopyridine; (9) a -amino-a -picoline; (10) 8-aminoquinoline; (11) 1-naphtylamine + benzyl alcohol; (12) 2-naphthylamine + benzyl alcohol; (13) aniline + p-xylene; (14) aniline + pyridine; (15) a -amino-a -picoline + benzyl alcohol; (16) 5:6:7:8 - tetrahydro - 2 - naphthylamine.  Specifications 772,600 and 776,157, [Group V], are referred to.
Patent GB-930922-A (GB)
Title: Atomiser holders
IPC: B05B11/06
Filed: 1961-02-23
Abstract: 930,922. Container closures. M. TURATTI. Feb. 23, 1961 [March 23, 1960], No. 6587/61. Class 125(3). [Also in Group XXIX] An adjustable atomizer holder to fit various sized necks of liquid containers, e.g. scent bottles, and through which centrally passes the liquid feed stem 26 of a conventional sprayer 23, includes a cap 19 with radial slots 19a-19d in which vertical arms 10a-13a of L-shaped members 10-13 radially slide. The arms have ribbed inner faces 9 which grip the container neck and are held in position by a surrounding flexible metallic band 17. The lower U-shaped ends of the arms receive the lower edge of the band, and to ensure radial sliding of the members the latter have fork-shaped parts 10b-13b embracing a block 18a on the cap. One end of the band is secured to the arm 10 by slots 17c, 17d, and the band is also slotted at 17l and 17f so as to provide, with a flanged pin 32 and threaded bush 33, an adjustable locking arrangement. A cover 21 is secured by a bush 25 threaded to the block 18a. The sprayer 23 to which a dip tube 50, Fig. 3, is attached, is adjustably held in position by a compression spring extending between a washer 52 and the cap.
Patent GB-1074471-A (GB)
Title: Improvements in and relating to chart reading and recording apparatus
Inventor: BOYLE ARCHIBALD RAYMOND
IPC: G09B29/10
Filed: 1964-02-18
Abstract: 1,074,471. Electric selective signalling. D-MAC Ltd. Feb. 5, 1965 [Feb. 18, 1964], No. 6617/64. Addition to 1,024,019. Heading G4H. A manually movable index in chart reading apparatus comprises an elongated carrier having two or more displaced signalling devices, e.g. coils. The carrier may be flexible, have index lines thereon, and be transparent or reflecting.
Patent GB-940504-A (GB)
Title: A precise method of measuring the internal diameter of a cylinder
Filed: 1960-02-25
Abstract: 940,504. Gauges. M.KUROKAWA. Feb. 25, 1960 [ Feb. 26, 1959], No. 6633/60. Heading G1M. The bore of a fluid containing cylinder 1 is measured by timing the drop through a length of it, under the influence of a weight 14, of two rams in succession, the rams, which are rotated as they drop, having cylindrical parts 3 which are short as compared with their diameters, (which diameters differ slightly from one another) and guides 4, 5 of diameters slightly smaller than those of the cylindrical parts. Two cylindrical parts 3, 3<SP>1</SP> may be arranged on the same ram, Fig. 5, the cylinder 1 being supported in an outer cylinder 16 or cylinders 16,17, and guides 18,19 for the ram stem 10 having holes 11,12 for the passage of fluid which is admitted under control of a valve 13. The guides 4, 5 are, in cross-sections, as in Fig. 3.
Patent GB-345069-A (GB)
Title: An improved process for the acetylation of cellulose
IPC: C08B3/06
Filed: 1930-02-28
Abstract: <PICT:0345069/IV/1> Cellulose, to be acetylated, is first subjected to the action of an acetylation mixture until the mass has become capable of being pumped, and is then forced repeatedly through nozzles for the purpose of obtaining an intimate mixture.  In the apparatus shown, the cellulosic material is introduced into an acetylation mixture contained in the vessel 1, whilst continuously stirring with the stirrer 2.  The mixture is then pumped by way of the conduit 3 to the nozzle 4, after which it again enters the mixing chamber 1 for recirculation.  A receiver 5 is preferably interposed between the nozzle and the mixer 1, and in order to avoid clogging of the nozzle, a blast of air or other gas may be supplied by the tube 8. Water for the subsequent ripening of the cellulose acetate, or other chemicals for precipitation of the ester may be caused to enter by way of the conduit 9.  A plurality of nozzles may be employed.
Patent GB-609059-A (GB)
Title: Improvements in or relating to the manufacture of alkyl pyridines
Filed: 1946-03-05
Abstract: Alkyl pyridines are produced by passing a vaporized aliphatic carbonyl compound of the formula R-CO-R1, where R is an alkyl or alkenyl group and R1 is hydrogen, alkyl or alkenyl, in admixture with a molal excess of ammonia, at a suitable conversion temperature, over a synthetic silica gel catalyst promoted with a minor proportion of alumina.  Acetaldehyde or paraldehyde yields 2- and 4-methyl pyridines.  Inert diluents such as methane, ethane or nitrogen may be present.  Other carbonyl compounds specified are propionaldehyde, butyraldehyde, valeraldehyde, crotonic and tiglic aldehydes, acetone and methyl ethyl ketone.  Suitable catalysts are prepared as described in U.S.A. Specifications 2,142,324 and 2,147,985.  A hydrous silica gel is prepared from alkali silicate and acid, treated with an aluminium salt solution, washed and dried.  The hydrous alumina which is adsorbed by the silica is generally not in excess of 10 per cent, usually 0.1-2 per cent by weight of the catalyst. Reaction conditions are generally within the ranges 500-1200 DEG  F., pressure from atmospheric to 500 p.s.i., and contact time 0.1-5 secs. In examples, acetaldehyde and ammonia in 1 : 3 molar ratio are passed with nitrogen over a synthetic gel containing 1.5 per cent alumina and 98.5 per cent silica gel at 800-950 DEG  F. and atmospheric pressure or 100 p.s.i. to yield 2- and 4-methyl pyridines and homologues.
Patent GB-1502548-A (GB)
Title: Primer for oily surfaces
IPC: C08L77/00
Filed: 1976-02-20
Abstract: 1502548 Aerosol primer compositions MINNESOTA MINING & MFG CO 20 Feb 1976 [21 Feb 1975] 6847/76 Heading C4X [Also in Division C3] Aerosol compositions for priming oily surfaces for tacky and pressure sensmtive adhesives comprise propellant and an organic solvent solution or stable dispersion of a blend of rubber and tackifying resin in a weight ratio of 15:85 to 35:65, the rubber being a rubbery block copolymer ABA where each A is a thermoplastic polymer block which has a glass transition temperature above 20‹ C., is incompatible with B and has a MW of 5000-125,000, and B is an elastomeric conjugated diene polymer block which has a MW of 15,000-250,000 and constitutes more than 20% of the block copolymer, the tackifying resin comprising first and second resinous components which are compatible with polymer block A and polymer block B respectively. Exemplified compositions comprise a mixture of propane and isobutane as propellant; styrene/butadiene or styrene/isoprene block copolymers; tackifiers selected from cycloaliphatic hydrocarbon resins, α-pinene resin, piperylene copolymers, synthetic polyterpene resins, wood rosin, rosin esters, gum rosin and mixed olefin copolymers; and solvents selected from methylene chloride, toluene, ethylacetate, methyl ethyl ketone and heptane.
Patent GB-642795-A (GB)
Title: An improved process and apparatus for the manufacture of fertilizers
IPC: C05B1/10
Filed: 1948-03-05
Abstract: Compound fertilizers are made by continuously grinding or crushing and mixing the ingredients, conditioning the mixture by heat treatment at a temperature of 200 DEG  to 220 DEG F in counter-flow to a current of hot air or gases until the moisture content is reduced to at least 2 per cent by weight of the material, screening the hot material and cooling to within 65 DEG -90 DEG F prior to packing and storage.  In one embodiment, mixing of the ground ingredients, e.g. ammonium sulphate, superphosphate and potassium chloride, is effected in two mixers from which alternately a steady flow of mixture is passed to an inclined rotary dryer, which may be externally heated by furnaces from which hot gases are passed through the dryer to a dust separator, separated dust being returned to the process.  The hot material from the dryer may be partially cooled before screening, screenings being returned to the process, and cooling preferably being effected by an open water-jacketed trough fitted with a paddle-worm or other screw-conveyer or a creeper-conveyer scraping the hot material over water-cooled plates. In a modification the heating of the mixture may be effected on a conveyer passing through a tunnel provided with high-frequency or other electrical heating equipment.
Patent GB-127656-A (GB)
Title: Improvements in or relating to Methods of and Apparatus for Detecting the Presence of Hydrogen in Gaseous Mixtures.
Inventor: BASSETT PRESTON ROGERS
IPC: G01N27/18
Filed: 1917-05-14
Abstract: 127,656. Bassett, P. R. May 14, 1917. Heat and temperature coefficients, apparatus for determining.-In detecting the amount of hydrogen present in gaseous mixtures by observing the change in resistance of an electrically heated conductor due to the cooling effect of the hydrogen, the conductor is formed of tungsten. In the form shown in Fig. 1, receptacles 1, 2, each containing two tungsten conductors 5, 22, 4, 23, are arranged in a container 3; the conductors of each pair are preferably out of vertical alinement, and separated by a deflecting wall 90, and and are connected to form opposite arms of a Wheatstone bridge with an indicator 24, showing percentage of hydrogen, connected across the bridge. A fan 13, driven by a motor 14, draws air from the desired part through pipes 8, 9, 10, and valves 17, 18, 21 permit passage of the air either directly through the container 3 or through the receptacle 1. a manometer 45 indicating the velocity in the latter case. The receptacle 2 is sealed. When the conductors are heated by the passage of current, change in resistance due to loss of heat to the hydrogen present causes an indication to be given on the instrument 24. To check the read. ings, occasional tests may be made by an instrument 50 such as is described in Specification 104,179, [Class 1 (i), Chemical processes &c.]. Each of the conductors may be replaced by a number of wires in parallel. When a given percentage of hydrogen is present, the indicator needle 31 contacts with an adjustable contact 28 to operate an alarm 27, or warning may be given by the extinction or ignition of a white or red light. In place of the Wheatstone bridge arrangement. only one conductor may be provided in each receptacle 1, 2, a millivoltmeter being shunted across the conductors. In the form shown in Fig. 2, a single conductor 41 is employed. In this form, the temperature of the air is first read by means of a thermometer 42, or readings on an ammeter A are taken with the air circulating first through the container 61 and then through the receptacle 40. To permit of direct readings being taken, the scale of the ammeter A may be mounted in guides and adjustable by screw-and-nut gearing, or, if the instrument is a recording-instrument employing a strip of paper moved by clockwork, these parts may be adjustable on the base of the instrument; alarm mechanism is also provided in these cases.
Patent GB-549777-A (GB)
Title: Improvements in sliding windows
IPC: B64C1/14
Filed: 1941-05-30
Abstract: 549,777. Windows. BECKETT, LAYCOCK, & WATKINSON, Ltd., WATKINSON, A., PERNETTA, C., and BARRATT, C. B. May 30, 1941, No. 6925. [Class 20 (iii)] Relates to aircraft windows of the kind comprising two panes 21, 22, Fig. 4, which, when the window is closed are in the same plane, the pane 21 being displaced laterally to allow the other pane to slide back to open the window, as described, for example, in Specifications 520,793 and 541,565. The pane 21 is moved laterally by a sliding movement of a bar 43 with inclined slots 44 engaging pins 45 on the bottom frame member of the pane, which is guided obliquely by inclined slots 40 engaging pins 42 on the outer frame. The longitudinal movement of the operating bar 43 is effected by a cranked arm 47 on a vertical shaft 46 and engaging a transverse slot in the bar. The handle rotating the vertical shaft is locked in the in and out positions of the pane. The sliding pane 22, Fig: 10, is moved by a rack and pinion mechanism in which a rack 57 engages the operating bar 60 of the other pane 21, and is so secured to the outer frame as to have a limited longitudinal movement upon the initial and final rotations of the pinion 56 by its operating handle 55. This forward or backward movement of rack communicated to the operating bar displaces the pane 21 inwards or outwards before the frame 22 is opened or closed.
Patent GB-845352-A (GB)
Title: Dipole-antenna element for connection to coaxial lines
IPC: H01F19/06
Filed: 1959-02-27
Abstract: 845,352. Impedance matching. STANDARD TELEPHONES & CABLES Ltd. Feb. 27, 1959 [March 5, 1958], No. 6997/59. Drawings to Specification. Class 40(8). [Also in Groups XXXV and XL(c)] In a matching transformer for connection of a coaxial feeder to a dipole aerial, the series resonant circuit formed by the aerial reactance and the stray inductance of the aerial side of the transformer coacts with the parallel resonant circuit formed by a capacitor connected across the feeder side of the transformer. The transformer may be of printed circuit construction.
Patent GB-609517-A (GB)
Title: Improvements in electrical apparatus for maintaining constant temperature
IPC: G05D23/275
Filed: 1946-03-06
Abstract: 609,517. Electric heating. HESSE, H. March 6, 1946, No. 7004. Convention date, Jan. 10, 1940. [Class 39(iii)] [Also in Group XXXV] In an electrically heated test-tube holder the temperature is maintained substantially constant by a thermostat situated at a point in the system in which the temperature variations are larger than those at the holder. As shown, the heating lamp 4, which is controlled by thermostat 6, acts directly on the metal surface 3 common with the socket 16 and the thermostat holder 5. A spigot on the test-tube holder 1 fits the socket 16 and the metal plate 7 serves to cool the thermostat. After switching on the temperature of the test-tube holder 1 fluctuates between various limits about a mean temperature under the control of the thermostat which is subjected to the larger temperature variations of the thermostat holder.
Patent GB-1489315-A (GB)
Title: Method of making plastics articles incorporating steel wool
IPC: B29C70/48
Filed: 1975-02-20
Abstract: 1489315 Compressing resin-impregnated steel wool FORD MOTOR CO Ltd 20 Feb 1975 7105/75 Heading B5A [Also in Divisions H3 and B7] An article such as a car body part or the casing of electronic equipment, is made by forming a layer of plastics, laying a mat of steel wool on the resin layer so that the resin impregnates the mat to form a sheet moulding material, and compression moulding the article therefrom. The steel wool provides radio frequency shielding. As described, a web of polythene film is led beneath successive dispensers of resin (polyester, epoxy, vinylester or phenolic resin), and the steel wool mat. A backing web of the film is applied, and the result rolled up for storage and later compression moulding. Glass fibres can also be applied before and/or after the steel wool, or as a combined mat.
Patent GB-180100-A (GB)
Title: Improvements in and relating to steam boilers
IPC: F22B13/06
Filed: 1921-03-04
Abstract: 180,100. Brotherhood, Ltd., P.. and Mann, G. M. March 4, 1921. Draught, regulating.-In a steam boiler of the type shown in Fig. 1 and described in Specification 21608/00 and 1105/15, where the draught is induced by exhaust steam-jets in the return tubes, a damper a is provided in the chimney b to control the rate of combustion by varying the rate at which gases are drawn from the furnace. According to the Provisional Specification, the effect of an exhaust steam blast in the chimney may be reduced by diverting all or part of the exhaust stream from the blast pipe, or by admitting air to the chimney. Also where speciallyprovided jets as above described are used, regulating-means may be applied to those jets.
Patent GB-159842-A (GB)
Title: Improvements in or relating to the manufacture of methyl alcohol from methyl chloride
IPC: C07C31/04
Filed: 1921-03-04
Abstract: In the production of methyl alcohol from methyl chloride and hot alkaline solutions, the reaction is accelerated and corrosion of the reaction vessel or parts thereof, if of metal, by free hydrochloric acid in the gases produced is prevented by keeping these surfaces covered with a film of the alkaline liquid.  This may be effected by rotating the reaction vessel or by means of mechanical agitators, atomizers, pumps, &c.  In an example, methyl chloride is heated with lime and water in a rotating iron vessel.
Patent GB-178666-A (GB)
Title: An improved tent
IPC: E04H15/00
Filed: 1921-03-05
Abstract: 178,666. Smith & Co. (London, E.), Ltd., J., and Treble, H. March 5, 1921. Tents.-A four-sided pyramidal tent has two opposite sides constructed as shown in Fig. 2, the intermediate sides being constructed as shown in Fig. 3. The two opposite sides a are provided with flaps d, which can be tied down over the adjacent side pieces b by means of taper d<3>, h<1>. Each part a is provided with a rope a<2> formed into loops a<3>, which can be passed through eyelets b<1> in the portions b for fastening purposes. An eyelet, such as d<1> is provided at the top of each of the side portions and of the flaps to fit over a pin at the top of the tent pole. Alternating to the construction shown, each of the sections a, b may be provided with a single flap.