baber/WOPTO huggingface dataset:
Patent GB-432105-A (GB)
Title: A process for concentrating all kinds of precious metal ores by froth flotation
IPC: B03D1/001
Filed: 1933-12-22
Abstract: Precious metals, or their compounds such as selenides or tellurides, are concentrated from their ores by froth flotation in a pulp containing a small amount of one or more of the sulphides, sulpho-salts, or mixtures of sulphides and sulpho-salts of copper, silver, lead or mercury, formed by coagulating, for example by heating or by slow agitation, very finely divided or colloidal particles of the sulphide or sulpho salt.  The term sulpho-salt is used to denote a double compound of the metal with sulphur and with arsenic or antimony.  The active sulphide may be prepared by treating a dilute solution of a soluble salt of the metal with a soluble sulphide or with sulphuretted hydrogen, and then subjecting the resultant suspension to heating or slow agitation to coagulate the colloidal part of the precipitate, the mixture added to the pulp containing coagulated sulphide and small particles of crystalline sulphide.  Alternatively naturally occurring sulphides such as galenite or argentite may be ground to a very fine state of division and then treated to coagulate the colloidal particles.  The active sulphide, which is stated to link up with the precious metal or ore to form aggregates which are easily floated, may be added to the pulp before or during flotation, or after a period of preliminary flotation.  Examples are given of the concentration of the precious metal in a pyritic gold ore and in an ore free from pyrites.  In the case of the pyritic ore, a first flotation is carried out in an alkaline pulp containing sodium cyanide to depress the pyrites, active lead sulphide being added to link up with the free gold and xanthate and aerofloat or cresol being used as flotation agents.  A concentrate rich in gold is obtained and is cleaned.  Copper sulphate is then added to neutralize the sodium cyanide and a second flotation is carried out to produce a concentrate containing pyrites and some gold.  More active sulphide is then added and a further flotation carried out to give a lead sulphide concentrate poor in gold which is used as an active sulphide reagent in treatment of a fresh batch of ore.
Patent GB-619421-A (GB)
Title: Improvements relating to the embossing of thermoplastic materials
IPC: B29C35/08
Filed: 1946-12-09
Abstract: 619,421. Dielectric heating. BRITISH THOMSON-HOUSTON CO., Ltd., and KEITLEY, R. Dec. 9, 1946, No. 36334. [Class 39 (iii)] Thermo plastic material 1 is passed under a wave guide 3 supplied with R.F. energy where it is superficially heated before passing under an embossing roller 4. The base plate 2 is maintained at a lower temperature to keep the body of the material cool, the local surface heating partially penetrating into the material by conduction. The outer surface of the material is cooled slightly between the point of heating at the wave guide slit 5 and the embossing roller 4 thus strengthening the outer skin of the material.
Patent GB-1315437-A (GB)
Title: Alkoxy trifluoromethylaniline compounds and their use as herbicides
IPC: A01N33/18
Filed: 1971-08-03
Abstract: 1315437 Herbicides containing alkoxy trifluoromethylanilines UNITED STATES BORAX & CHEMICAL CORP 3 Aug 1971 [5 Aug 1970] 36424/71 Heading ASE [Also in Division C2] Compounds of the general formula: in which R 1  is a C 2 -C 6  alkyl group, R 2  is hydrogen or a C 1 -C 6  alkyl group, R 3  is a C 1 -C 6  alkyl group and X is oxygen or sulphur are used as active ingredients in herbicidal compositions. The compositions may contain conventional extenders and diluents, surfactants, humectants and other herbicides, for example, sodium borates, sodium chlorate, chlorophenoxyacetic acids, substituted uracils and ureas, carbamates, amides and haloalkanoic acids.
Patent GB-1102832-A (GB)
Title: Improvements in or relating to the manufacture of thin film modules
Inventor: CHAPMAN PATRICIA ROSE KATE
IPC: H05K3/16
Filed: 1964-09-04
Abstract: <PICT:1102832/C6-C7/1> In a method of making a thin film module comprising circuit elements and connections therefor deposited on an insulating substrate, an in-contact mask is formed on the substrate delineating the final pattern to be formed, and discrete masks are used in conjunction with the in-contact mask for the deposition of various materials to form different elements of the circuit. the invention is described with reference to the production of the thin film module depicted in Fig. 1, which comprises a capacitor 2, resistors 6, and conductors 7...10 deposited on a substrate 1 of glass or other suitable material.  First a layer of copper is deposited on the surface of the substrate, and is etched to expose the substrate over the area which will ultimately be covered with circuitry; the remaining Cu forms the incontact mask Fig. 2 (not shown).  A discrete mask Fig. 3 (not shown) having apertures delineating the bottom plate 3 of capacitor 2 and conductors 8, 9, 10 is placed over the in-contact mask on the substrate 1 and gold is evaporated in vacuo through the mask on to the substrate.  This discrete mask is then replaced in turn by other masks Figs. 4, 5, 6 (not shown) through which SiO to form the dielectric of the capacitor, Ni-Cr to form resistors 6, and gold to form the upper capacitor plate 4 and conductor 7, are successively evaporated. Finally the Cu mask is removed by etching.
Patent GB-1288062-A (GB)
IPC: B60C9/00
Filed: 1969-08-27
Abstract: 1288062 Tyre reinforcement fabrics; tyre cords GOODYEAR TIRE & RUBBER CO 27 Aug 1969 [27 Aug 1968] 36554/69 Heading B5N [Also in Divisions B7 and D1] A rubber article, e.g. a tyre, has a woven reinforcing fabric having warp threads of continuous filament polyester material and relatively weaker weft threads consisting of a blend of polyester and cotton staple fibre. The weft threads may be spaced one quarter of an inch apart and may be single yarns of 21 cotton count with a twist of twenty-one turns per inch, having the same breaking strength or equivalent all cotton yarn, an elongation of from 10% to 30% and have from 20 % to 80 % of cotton staple fibre.
Patent GB-811766-A (GB)
Title: Improvements in or relating to audio frequency amplifiers
Inventor: GURNETT KEITH WILLIAM
IPC: H03F3/26
Filed: 1956-11-30
Abstract: 811,766. Transistor amplifying circuits. GENERAL ELECTRIC CO. Ltd. Dec. 2, 1957 [Nov. 30, 1956], No. 36717/56. Class 40 (6). A push-pull transistor amplifier is provided with switching for alternative low (e.g. 6 v.) and high (e.g. 12 v.) voltage operation. On low voltage, i.e. with switches 1-5 in position A the series feed resistance of the driver transistor 9 is reduced by short-circuiting of resistor 34, and the output transistors 20, 21 are operated in normal push-pull, feeding respectively into the two halves 27, 28 of the output transformer primary. For high voltage, switch position B, the series feed resistance of the driver 9 is increased and the output transistors 20, 21 series connected, the half primary 27 of the output transformer being disconnected and the other half 28 fed from the point of connection of the collector of transistor 21 and emitter of transistor 20. This point is also connected for D.C. only and via the transformer winding 28, to the centre of a pair of equal-value resistors 35, 36 across the supply.
Patent GB-1416490-A (GB)
Title: Vehicle having an arm-rest
IPC: B60N2/75
Filed: 1973-08-02
Abstract: 1416490 Vehicle door with arm-rest DAIMLER-BENZ AG 2 Aug 1973 [3 Aug 1972] 36814/73 Heading B7J A vehicle has an arm-rest 1 attached at one of its surfaces 6 to a door of the vehicle and also has, disposed in the region of the arm rest, a door actuating lever 13 rotatable about a pivot journal 12, the arm-rest being symmetrical with respect to its longitudinal central plane IV-IV which is perpendicular to its attachment surface 6, and the pivot journal 12 being mounted on the arm-rest with the axis of the journal lying in the central plane IV-IV. The pivot journal 12 is accommodated in a recess 10 at one end 11 of the arm-rest, surfaces 16 and 17 at the top and bottom of the mouth of the recess acting as abutments to restrict movement of the lever 13. The arm-rest is attached to a door panel 2 at two spaced attachment points, such as at 3, a central portion 5 between these points being offset from the attachment surface 6 to provide a recess 7 forming a handle. A reinforcing insert 21 extends over substantially the whole length of the arm-rest, has the journal 12 mounted thereon, adjoins the attachment surface 6 to receive the attachment means such as screws 35, and is stiffened by being corrugated in cross-section.
Patent GB-450836-A (GB)
Title: Improved process of and apparatus for forging the shank of a nail or similar object
IPC: B21K1/44
Filed: 1934-12-22
Abstract: 450,836. Nail - forging machines. MILLINGUE, L., 34, Rue de la Republique, Puteaux, Seine, France. Dec. 22, 1934, No. 36828. [Class 83 (iv)] In horse-shoe.making machines of the type employing reducing dies consisting of four co-operating tools, a feed device is employed frictionally engaging the wire stock with stroke limiting means advanced into the path of the work to engage the oblique surfaces of the head portions. In the Figure is shown an opposite pair g, h of dies after pressing and before the stops e, f have been moved into the path of the oblique surface of the partly formed head. On retraction of the work by the reciprocating friction gripper j the stops e, f engage the work and the press dies g, h perform a second operation on the work.
Patent GB-1261270-A (GB)
Title: Stabilisation of 1,1,1-trichloroethane
Inventor: MARSDEN GEORGE
IPC: C07C17/42
Filed: 1969-07-22
Abstract: 1,261,270. Stabilization of 1,1,1-trichloroethane. IMPERIAL CHEMICAL INDUSTRIES Ltd. 12 June, 1970 [22 July, 1969], No. 36830/69. Heading C2C. [Also in Division C5] 1,1,1-Trichloroethane is stabilized by an admixture of 1-5% by weight of dioxane and 0À1-1À0% by wt. of glycidol (2,3-epoxypropanol-1). 1-5% by wt. of isopropyl nitrate or 1-5% by wt. of 1,2-dimethoxyethane may be present as additional stabilizer. The stabilized solvent is used in metal degreasing. Reference has been directed by the Comptroller to Specification 930,973.
Patent GB-449329-A (GB)
Title: Improvements in traffic sign globes
IPC: G09F19/00
Filed: 1934-12-27
Abstract: 449,329. Traffic signs. HAILWOOD, E. A., Beacon House, Texas Street, Morley, near Leeds. Dec. 27, 1934, No. 37023. [Class 3 (ii)] A traffic sign of the kind comprising a coloured globe mounted on a pillar or like support, is characterized in that the globe is constructed from two semi - spherical pieces of metal which are secured together by a bolt extending within the globe, the joint between the two pieces being horizontal. Fig. 2 shows an embodiment wherein the portions S, S<1> of the globe are secured by a bolt B attached to a cup C fitting over the globe support. The nut B<3> on the bolt may be decorated or provided with plain or faceted lenses. In another embodiment, Fig. 4, the parts of the globe are secured together by a spider L which is secured to the part S by screws L<2> and to the cup C by the bolt B. Either or both parts of the globe may be provided with plain or faceted lenses, or with wording for directing the public.
Patent GB-512601-A (GB)
Title: Improvements in the manufacture of metal frames for double windows or double doors
IPC: E06B3/26
Filed: 1938-05-17
Abstract: 512,601. Door and window frames. AKTIEBOLAGET GOTAVERKEN, and ANDERSSON, N. May 17, 1938, No. 37087. Divided out of 512,588. [Class 20 (iii)] A method of making the fixed frames, sash frames, and panels for double windows or double doors consists in dividing a metal frame in the door or window plane into two separate frames, and in'interconnecting the two frames by fittings, such as hinges, clasping means, mouldings, or the like, while they are still in the position which they had occupied in the undivided frame. In the construction shown, double casement-window sashes 10, 11 are formed by. cutting a frame 1 along the lines 6 - - - 9. Prior to the cutting operation, small cuts 2, 3 are formed in the frame adjacent to the hinges 4 and clasping means 5, and the latter are secured in position. Alternatively, removable fastening means are fitted to the frame 1 and are left in position until the division of the frame and the attachment of the hinges and like fittings.have been effected.
Patent GB-884148-A (GB)
Title: Improvements in and relating to the preparation of carbon tetrafluoride
IPC: B01J19/08
Filed: 1958-11-20
Abstract: Carbon tetrafluoride is prepared by heating and vaporising in a carbon electric arc a fluoride of sodium or potassium in admixture with chlorine in molar ratio 0.3-0.5 : 1, and contacting the effluent products of the arc, while in the vaporised state and before the mixture has cooled below the boiling point of the metal fluoride, with a mass of carbon particles at a temperature above said boiling point, preferably at at least 1,800 DEG C., and in amount at least 0.25 gram atoms per mole of metal fluoride.  The arc may be magnetically rotated and is preferably operated in an atmosphere at a pressure of 10-300 mmHg.  The product may contain up to 10% of chlorofluoromethanes, which may be removed by washing with water or aqueous alkali, which also removes chlorine. Chlorine may, alternatively, be removed from the reaction product by distillation. A suitable form of carbon arc is illustrated (see Group XI). Specification 808,442 and U.S.A. Specification 2,709,192 are referred to.
Patent GB-1090470-A (GB)
Title: Improvements in or relating to sanitary basins
Inventor: FRY IAN WALTER
IPC: A47K1/00
Filed: 1965-09-02
Abstract: 1,090,470. Combined wash basin and shelf unit. WALTER S. FRY Ltd. Sept. 5, 1966 [Sept. 2, 1965], No. 37616/65. Heading A4H. A shelf unit (5) is turnably mounted on the leg (3) of a wash hand basin. The shelves (6) are of quadrant shape and their straight edges are attached to two vertical boards (9). The unit is held in each of two positions spaced 90 degrees apart by a spring loaded ball in the surround (1) of the wash basin engaging sockets 10 in the vertical boards (9).
Patent GB-762349-A (GB)
Title: Improvements in or relating to plug gauges for use with pneumatic gauging apparatus
Inventor: BOOSEY FREDERICK ROBERT
IPC: G01B13/00
Filed: 1955-09-14
Abstract: 762,349. Pneumatic plug gauges. SIGMA INSTRUMENT GO., Ltd. Sept. 14, 1955 [Dec. 30, 1954], No. 37675/54. Class 106 (2). A plug gauge for use with a pneumatic gauging apparatus comprises two parallel cantilevers 6, 7 preferably formed from a cylindrical shell 2 by splitting it diametrically, a gauging anvil 8 on the free end of each cantilever, a tube 3 between the cantilevers connectible to a source of air, a valve 12, 12B for controlling escape of air from the tube and means, such as a V-shaped spring strip 15, between the free ends of the cantilevers and the valve to vary the valve opening in accordance with the distance between the anvils. The needle valve shown has a parabolic head 12B seating on a bush 9A and is urged by a spring 14 into an open condition. Specifications 724,205 and 724,228 are referred to.
Patent GB-1073938-A (GB)
Title: Apparatus for chain broaching machines
IPC: B23D37/18
Filed: 1965-09-03
Abstract: 1,073,938. Broaching. KARL KLINK WERKZEUG UND MASCHINENFABRIKSept. 3, 1965 [Sept. 8, 1964], No. 37682/65- Headings B3B and B3L. In a chain-broaching machine, the chain in the machining region is tensioned by the engagement of surfaces 3, 4 on consecutive work-, or broach-, holders. The degree of tension can be adjusted by shims. In modifications, the surfaces are formed on adjustable wedges or the supports constitute the chain links.
Patent GB-1473118-A (GB)
IPC: B05D1/00
Filed: 1974-08-30
Abstract: 1473118 Method of powder coating EXXON RESEARCH & ENG CO 30 Aug 1974 [17 Sept 1973] 38038/74 Heading B2E [Also in Divisions B5 and H1] A substrate is coated by depositing thereon a layer of a powder having a particle size of 1-500 microns of a polymer having repeating heterocyclic rings of structure where X is NH or O, subjecting the powder layer to the action of the vapour, spray, mist or fog of an aprotic dipolar solvent for the powder until the powder is wetted not more than 25 wt. % with solvent, heating the wetted powder to cause it to flow and coalesce at a temperature below the boiling point of the solvent and subsequently heating the coating to remove the absorbed solvent. The substrate may be copper wire or cable, an aluminium sheet or pan, steel sheet, plastics or fabric and may be treated (e.g. with a release material) or selected so as not to have an affinity for the coating, which, in such case, is obtained as a self-supporting film. The polymer may be a polyparabanic acid made from diphenyl methane- or diphenyl ether-diisocyanate or a poly(iminoimidazolidinedione) and may be applied by an electrostatic spraying or fluid bed technique. Specified solvents are dimethylformamide, dimethylacetamide, dimethyl sulphoxide, N-methylpyrrolidone, cresol, butyrolactone, cyclohexanone, cyclopentanone and dioxolone.
Patent GB-811189-A (GB)
Title: Improvements in or relating to self-propelled agricultural machines
IPC: B62D51/04
Filed: 1956-12-14
Abstract: 811,189. Vehicle driving gear. MASCHINENFABRIK FAHR, A.G. Dec. 14, 1956 [Dec. 19, 1955], No. 38181/56. Class 79(2) In a self-propelled agricultural machine the engine (not shown) is connected to the driving wheels 3 by a variable speed gearing of the expanding pulley type having the driving pulley 6 loosely mounted on the axle 2 and the driven pulley 8 fast on the driving shaft 9 of further gearing 10, from the driven shaft 12 of which the wheels 3 are driven As further shown an engine-driven belt 4 passes round a pulley 5 fast with the pulley 6. The driven shaft 12 is connected by chain and sprocket mechanisms 15 to the wheel hubs 14. The casing of the gearing 10 is pivotally mounted about the axis of the shaft 9 on the vehicle frame, an adjusting device 16 permitting the casing to be pivoted for varying the tension in the mechanisms 15. In another embodiment, Fig. 3 (not shown), the pivotal axis of the casing 10 is disposed in line with and between the shaft 9 and axle 2, the distance between the axis and the shaft 9 not exceeding a quarter of the distance between the shaft 9 and axle 2. The invention is stated to be applicable to a reaper-thresher.
Patent GB-1484603-A (GB)
Title: Process for chemically plating printed circuits
IPC: C03C17/10
Filed: 1974-09-02
Abstract: 1484603 Over-coating printed circuits SOC ITALIANA VETRO SIV SpA 2 Sept 1974 [5 Sept 1973] 38201/74 Heading C7F Electric circuits printed on glass, e.g. for motor vehicle windows, are degreased with steam, rinsed and dried, immersed at 20-25‹C in an aqueous solution of 50-60 mg SnCl 2  per litre, plated for 1-5 minutes at 20-25‹C in 50-60 mg/l aqueous AgNO 3  or in a Ni-B plating solution, washed in demineralized water, and dried, whereby a protective overcoating is obtained. The silver-plating step may be preceded by Cu-plating or followed by Au plating.
Patent GB-1172147-A (GB)
Title: Halogenated Phenol-Aldehyde Resins
IPC: C08G8/24
Filed: 1967-08-18
Abstract: 1,172,147. Printing process. MONSANTO CO. IS Aug., 1967 [17 July, 1967], No. 38233/67. Heading B6C. [Also in Division C3] Phenol-formaldehyde polymers which undergo colour-forming reactions with printing fluids without need for an ionizing medium are characterized by being heat-fusible, by having a m.p. of 60-130 C., by containing 0À5-1À0 aldehyde groups per phenol group, by containing a halogen substituent on at least 50% of their phenol residues and by containing 0À02-4% of a sulphate or sulphonate or boron trifluoride and 0À02-4% of a phosphite or hypophosphite. The preferred printing fluids contain an aromatic compound which is converted to a coloured form by donating an electron to the polymer. The polymer is incorporated in the record material as fine particles and on printing assumes a distinctive colour.
Patent GB-1516885-A (GB)
Title: Trisequential colour video playback system including means for effecting dropout compensation
IPC: H04N11/08
Filed: 1975-09-18
Abstract: 1516885 Colour television BASF AG 18 Sept 1975 [19 Sept 1974] 38319/75 Heading H4F In a trisequential colour video playback system provided with dropout compensation, a playback channel includes an FM demodulator 6 for elimination of the FM carrier from the FM- modulated video signal recorded in trisequential form, a low-pass filter 7 and a high-pass filter 8 for separation of the high frequency luminance signal portion from the video signal, a detector 12 for detecting a dropout signal occurring in the envelope of the FM modulated video signal, first and second delay devices 9, 10, the outputs from filter 7 and delay devices 9, 10 being fed to a trisequential switch and matrix stage 15 which provides a complete luminance and colour signal in unmodulated form, and a third delay device 11 connected to device 10 and to a switch 13 controlled by detector 12, whereby if a dropout is detected, the switch is operated to connect the output of device 11 to the entrance of the first delay device 9 to replace the output from filter 7. The delay devices each consist of a delay line having a time delay corresponding to a horizontal line scan period. The switch 13 is connected to a second switch 14 which is operated simultaneously with the first switch thereby preventing the passing on of the high frequency luminance signal portion during the occurrence of a dropout. The video system may employ a magnetic tape, a magnetic disc, a piezoelectrical scannable disc or an optically scannable disc. The delay devices may be in the form of bucket brigades or charged coupled devices or peristaltic charged coupled devices. An AM modulator (not shown) feeds AM-modulated signals to devices 9-11, a demodulator being included in matrix stage 15.
Patent GB-1340472-A (GB)
Title: Noise discrimination apparatus
IPC: G01P3/488
Filed: 1972-08-17
Abstract: 1340472 Measuring angular velocity electrically ITT INDUSTRIES Inc 17 Aug 1972 [20 Aug 1971 23 June 1972] 38395/72 Heading G1N [Also in Division H4] In apparatus for measuring the angular velocity of a shaft by the pulse rate produced in a coil 18 on a magnet 16 by a toothed disc 10 mounted on the shaft, as it rotates relative to the coil 18, the effect of pulses produced by extraneous magnetic field variations is eliminated by a second coil 19 on a second magnet 17 located to produce a similar speed voltage signal but out-of-phase with that produced in coil 18. Coils 18, 19 are connected via amplifiers 22, 25 and inverters 28, 29 to NAND gates 30, 31 which control a multivibrator 32. The out-of-phase speed voltages produce a pulse train of the same frequency from multivibrator 32, but the extraneous magnetic variations produce in-phase signals in coils 18, 19 which do not pass through gates 30, 31 to effect the multivibrator 32.
Patent GB-877455-A (GB)
Title: Improvements in or relating to rotary pumps
IPC: F04B1/113
Filed: 1957-12-10
Abstract: 877,455. Eccentrics. ZAHNRADFABRIK FRIEDRICHSHAFEN A.G. Dec. 10, 1957 [Dec. 17, 1956], No. 38418/57. Class 122 (1). [Also in Group XXVIII] In a radial cylinder pump the cylinder block is rotatably mounted on a crankpin 10 which is radially movable under the influence of the outlet pressure against spring pressure to vary the stroke. The pin 10 is eccentrically mounted on a pin 43 engaging in an eccentric bore in a pin 42 which in turn is mounted in an eccentric bore in a bush 39. The pin 43 is connected to a pinion 44 and the pin 42 has pinion teeth 48, the pinions 44, 48 respectively engaging racks 49, 50, one end of each of which engages a spring while the other ends form pistons subjected to the outlet pressure so that the pins 42, 43 are rotated in opposite directions to vary the throw of the crank-pin 10.