baber/WOPTO huggingface dataset:
Patent GB-646783-A (GB)
Title: Continuous tunnel kiln for firing earthenware or refractory products
IPC: F27B9/26
Filed: 1947-05-22
Abstract: 646,783. Tunnel kilns. AMAND, R. May 22, 1947, No. 13834. Convention date, Dec. 28,1942. [Class 51 (ii)] In a continuous tunnel kiln for ceramic ware the load 4 is carried on superposed layers 2 and 3 of carborundum bricks propelled into the tunnel in turn by a mechanical ram 6, and where a scaffolding is necessary to carry the load it may be supported on a thin platform of carborundum covering a number of bricks.
Patent GB-1496018-A (GB)
Title: Thermoplastic moulding compositions based on polybutylene terephthalate
IPC: C08L67/02
Filed: 1975-04-04
Abstract: 1496018 Polybutylene terephthalate moulding compositions BASF AG 4 April 1975 [6 April 1974 8 April 1974] 13842/75 Heading C3R A moulding composition comprises polybutylene terephthalate and 1 to 40% by weight of an aromatic polycarbonate, the percentage being based on the weight of polybutylene terephthalate and polycarbonate. The composition may also include from 5 to 50% by weight, based on polybutylene terephthalate and polycarbonate, of a reinforcing agent (e.g. glass fibres or spheres) or a filler (e.g. talc). The polycarbonate used in the examples is derived from bisphenol A.
Patent GB-1175426-A (GB)
Title: Improvements in the Treatment of Keratinaceous Fibers
IPC: D06M15/333
Filed: 1967-03-28
Abstract: 1,175,426. Coated fabrics. TEE-PAK Inc. 28 March, 1967 [6 April, 1966], No. 13937/67. Heading B2E. [Also in Division D1] Fabrics made from keratinous fibres, e.g. fibres from sheep, lambs, goats, llama, alpaca, or vicuna, alone or in admixture with nylon fibres, are shrinkproofed and creaseproofed by contacting them with a solution of a decausticized polymeric alcohol xanthate of degree of substitution greater than 3% and pH less than 13, at a solution concentration and time of contact sufficient to produce a polymeric alcohol add-on of 0.1-10% by weight on the fabric, and regenerating the polymeric alcohol on the fabric by heat or chemical decomposition of the xanthate, e.g. with hydrochloric acid, the decausticized polymeric alcohol xanthate may be an alkali cellulose xanthate, amylose xanthate, dextrin xanthate, polyvinyl alcohol xanthate or polyallyl alcohol xanthate obtained by subjecting the alkaline solution thereof to dialysis or to treatment with ion exchange or retardation materials and optionally spray drying and redissolving the products obtained. Prior to treatment the fabrics may be scoured, treated with hydrogen peroxide solution which may contain tetrasodium pyrophosphate, treated with a diisocyanate, e.g. dianisidine diisocyanate in methylene chloride, tolylene diisocyanate in acetone or diphenylene p,p'-diisocyanate in acetone, or buffered to a pH of 10. The treating solution may also contain a wetting agent, e.g. dioctyl sulphosuccinate, dialdehyde starch, a mixture of formaldehyde and ammonium chloride or a diisocyanate. After treatment with the solution prior to drying, the fabric may be arranged in creases and pressed with a hot iron to impart permanent creases thereto.
Patent GB-260888-A (GB)
Title: Improved method of working with reducing gases in apparatus made of copper or its alloys and apparatus therefor
IPC: B01J19/02
Filed: 1926-06-02
Abstract: 260,888. Johnson, J. Y., (I. G. Farbenindustrie Akt.-Ges.). June 2, 1926. Methyl alcohol.-In carrying out the synthetic manufacture of methyl alcohol in apparatus made of or lined with copper or its alloys, in order to prevent the diffusion of the reacting gases through the walls of the apparatus (which diffusion is ascribed to the presence in the copper or its alloys of small quantities of the oxides of copper and of the metals alloyed therewith, and to the reduction of those oxides by the gases), the walls of the apparatus are protected from direct contact with the reacting gases by a layer of gas which is non-reducing with respect to those oxides. For example, the apparatus mav be provided with an inner wall of copper or its alloys so that a narrow space is formed between the inner and outer walls through which space the non-reducing gas. such as nitrogen or carbon dioxide, is slowly passed. Alternatively, the narrow space may be simply filled with the non- reducing gas, but in either event the gas is preferably maintained under substantially the same pressure as the reacting gases.
Patent GB-1499935-A (GB)
Title: Apparatus for recording a video signal
IPC: G11B20/02
Filed: 1975-04-04
Abstract: 1499935 Video recording systems SONY CORP 4 April 1975 [9 April 1974] 13956/75 Heading H4F A video signal is recorded in successive parallel tracks of a record medium, the signal passing to the recording transducer via a modulator or frequency converter fed by a variable frequency oscillator whose phase is controlled in accordance with the position of the transducer along the track. This allows the signal to be so recorded that its carrier signal Jo, Fig. 4, in any track has the same instantaneous phase as that of the carrier signals in the other tracks, taken along any line substantially perpendicular to the tracks. Consequently, should the read head have a width D which extends over more than one track, no beat interference is produced during reproduction. As guard bands are required the recording density is increased. In the embodiments disclosed two recording heads 101, 102 are mounted on a motor-driven drum 103 such that the heads record alternate tracks on a magnetic tape 107, Fig. 7, or sheet, Fig. 1 (not shown). A generator 26 coupled to the drive motor 25 provides a signal, corresponding to the rotational phase of the shaft 24 of the motor, which controls the oscillator 27 via a phase lock loop 28, 29. The luminance of the video input at 33 is selected by a filter 34 and modulated on the signal from oscillator 27. The chrominance signal, selected by filter 38, is changed to a frequency lower than that of the oscillator by means of a frequency converter fed with a frequency derived (30-32) from the oscillator frequency. The signals from modulator 35 and converter 39 are combined (37) and passed to the recording heads. Each track consists of one field, and the tracks are recorded such that the vertical and horizontal sync. signals are aligned. Reference is also made to optical, engraved, and capacitive recording.
Patent GB-718212-A (GB)
Title: Improvements in or relating to the depression of copper sulphide in the froth flotation of sulphide ores
IPC: B03D1/06
Filed: 1952-06-03
Abstract: Ammoniated zinc cyanide, in which the ammonia is non-ionically linked, is formed by the action of gaseous ammonia on zinc cyanide. A product having the composition Zn (CN)2 1.8 NH3 is referred to.ALSO:Copper sulphides are selectively depressed in the presence of lead or molybdenum sulphides and of a collector for the latter by the use of 2-18lbs./ton of a depressent containing the cyanide radical, a cation selected from Zn, Mg and Al, and non-toxically linked ammonia. The cation may be added as a salt, the cyanide radical as an alkali metal or alkaline earth metal cyanide and the ammonia as ammonium hydroxide, or an ammoniated metallic salt may be mixed with a cyanide, or an ammoniated cyanide may be mixed with a salt. Alternatively, ammoniated zinc cyanide, formed by the action of gaseous ammonia or zinc cyanide, may be used. Xanthates mercaptobenzothiazoles and dithiophosphates may be used as collectors and higher alcohols which may be stabilized with fuel oil, as frothers.
Patent GB-968599-A (GB)
Title: Plunger operated switch
IPC: H01H13/18
Filed: 1961-04-18
Abstract: 968,599. Retractive switches. NORTHERN ORDNANCE Inc. April 18, 1961 [Feb. 23, 1961], No. 14021/61. Heading H2B. Microswitches 20 contained in a fluid-tight casing 12, 14 are operated by a hollow plunger 26 passing through a fluid seal 46, 68, 70 as described in Specification 891,107. The compression spring 34 within the plunger 26 engages the screw 38 to which a thimble 40 is attached which operates the plungers of the switches 20. A further compression spring 42 extends between the thimble 40 and a washer 36 under the head of screw 38. A stronger compression spring 28 is located between the washer 36 and a washer 32 fixed to the casing 12, to return the plunger 26 to its rest position. One end of the housing member 14 is formed as a bayonet connector 50, the cup 24 at the other end being rolled over the end flange 18 of the housing member 12, an 0-ring 52 forming a seal. The switches 20 are supported by a thin stamping 44 clamped between the members 12, 14. Actuation may take place through a roller attachment operated by a cam, Fig. 5 (not shown). Specification 936,588 also is referred to.
Patent GB-1476090-A (GB)
Title: Device for holding a changeable insert
IPC: B23B27/00
Filed: 1975-04-07
Abstract: 1476090 Parting-off tools W MIHIC 7 April 1975 [8 April 1974] 14088/75 Heading B3B A tool holding assembly for use in parting-off operations comprises a holder body 10 having a recessed seat portion 12 at one end for the reception of a cutting insert 15 and clamping means 18 the bottom surface 16 of the seat portion is of profiled cross section in the form of a 'V' the main portion of the surface being below and parallel to the top surface 14 of the holder body and the rear portion 13 of the surface being adapted to meet the top surface of the body, the V-shaped profile being constant throughout. The insert 15 and the clamping means 18 have complementary surfaces to the V-shaped profile which provided lateral support, the clamping means 18 having a nose portion 20 which engages in a recess 17 in the insert to rigidly secure the insert on the seating when the screw 22 secures the clamp 18. A pin 19 may be provided, which extends from the profiled surface, to guide the clamping means 18 during releasing and clamping of the means 18 by the screw 22. In the embodiment shown in Fig. 1 the front portion of the body 10 is formed as a blade projection 11 to point the cutting tool to be used as a parting-off tool. In the other embodiments the body 10 may be in the form of a blade member which is itself secured on a tool holder 31. The blade portion may also be located at right angles to the body portion as shown in Fig. 5. Reference has been directed by the Comptroller to Specification 1,392,026.
Patent GB-836630-A (GB)
Title: Improvements in or relating to mounting arrangements for piezo-electric crystals
Inventor: MCKNIGHT TERENCE CLIFFORD
IPC: H03H9/09
Filed: 1957-05-03
Abstract: 836,630. Piezo-electric crystal mountings. PYE Ltd. April 25, 1958 [May 3, 1957], No. 14168/57. Class 40 (8). A piezo-electric crystal unit is directly supported in a holder by its leads or by connecting pins. As shown, the crystal plate 1 is supported within a hermetically sealed metal container 2 by pins 6 which extend through glass or ceramic seals 5 in the base of the container. Portions 6b of the pins are channelshaped in cross-section and embrace the edge of the plate. The plate is held in position by thermosetting conductive paste 7 which also serves to connect the pins to electrodes 1a, 1b. Where rigid pins are used, resilience may be imparted to those portions which extend inside the container by e.g. flattening or coiling.
Patent GB-814068-A (GB)
Title: Vinyl acetate polymerisation
IPC: C08F18/08
Filed: 1955-10-20
Abstract: Vinyl acetate is polymerized in aqueous emulsion in the presence of a chelating sequestering agent containing amine and carboxylic acid groups, or an alkali metal salt thereof, e.g. in 0.01 to 0.1 per cent.  Specified sequestering agents are iminotriacetic and ethylene diamine tetracetic acids and the alkali metal salts thereof, e.g. the trisodium salt of ethylene diamine tetra-acetic acid, and these agents are said to form water-soluble ring compounds with any metallic cations present in the emulsion, thereby preventing the metal from acting as a cation and thereby giving rise to increased yields of polymer, particularly when the monomer contains an inhibitor such as hydroquinone.  The polymerization may be in an inert atmosphere, the monomer may be added gradually, and the reaction is preferably initiated with a peroxidic initiator such as potassium or ammonium persulphate, hydrogen peroxide (optionally with an iron salt, or zinc formaldehyde sulphoxylate, or a titanous salt), potassium persulphate with sodium bisulphite, or a bromate mixed with a bisulphite.  A mixture of a hydrophilic colloid with a surface tension depressant is preferably included as a dispersing agent and listed materials are polyvinyl alcohols, hydrolysed polyvinyl acetates, gum arabic, hydroxyethyl cellulose, methyl cellulose, carboxymethyl cellulose, starch, glue, gelatine, sodium alginate, or agar, in admixture with isobutyl-, diisobutyl- or ceryl-naphthalene sulphonic acid or the sodium salt thereof, sodium lauryl sulphate, sodium dioctyl sulphosuccinate, formaldehyde-naphthalene sulphonic acid condensates, polyglycol-ethers, -esters or -amides, or sterol. The pH of the reaction mixture is desirably maintained at 3 to 8, e.g. by the use of formic acid, sodium bicarbonate, sodium acetate and/or sodium phosphate.  Copolymers may also be obtained, particularly with methyl acrylate or methacrylate, vinyl butyrate or chloride, ethyl crotonate, dimethyl maleate, acrylic, methacrylic or crotonic acid, acrylamide or N-alkyl- or N,N-dialkyl acrylamide, methyl vinyl sulphone, vinyl benzene sulphonic acid or its salts, vinyl benzene sulphonamide, the sodium salt or the ethyl ester of vinyl sulphonic acid, acrylonitrile, fumaronitrile, maleic anhydride, or N-vinyl pyrrolidone.  The emulsions obtained may be mixed with pigments, plasticizers and other materials to form paints, and listed ingredients used are deionized water, ammonia, titanium dioxide, manganese dioxide, lithopone, antimony oxide, barytes, silica, talc, clay, mica, iron oxides, maroon oxides, metallic browns, cadmium red and yellow, toluidine red, para red, lithol toner, "Hansa" yellow (Registered Trade Mark), benzidine yellow, dinitraniline orange, chromium oxide green, phthalocyanine green and blue, carbon blacks, aluminium and copper flakes and powders, luminous pigments, "Monastral Blue" (Registered Trade Mark), dibutyl and dioctyl phthalates, dioctyl sebacate and adipate, tricresyl phosphate, alkyd resins, chlorinated diphenyls and various substituted biphenyls.
Patent GB-221544-A (GB)
Title: Improvements in regulating resistances and in switches therefor
IPC: H01C10/48
Filed: 1923-05-30
Abstract: 221,544. Houghton, T. May 30, 1923. Regulating - switches adapted for the control of two circuits, in which movement of a switch member causes the current in the one circuit to be diminished and the current in the other circuit to be simultaneously increased. The switch comprises a series of resistances a - - - h, connected at one end to a source of current and at the other end to fixed contacts A - - H, and a switch member consisting of conducting parts j, K separated by an insulating part. The switch member may take the form of a disc, as shown in the Figure, or of a bar or of a drum, the fixed contacts A - - H being suitably arranged in each case. The two extreme contacts A, H are connected to the circuits to be controlled, e.g. to arc lamps P, Q and these in turn are connected to the other pole of the supply circuit. The Figure shows one extreme position in which the lamp P receives the maximum current and the lamp Q just sufficient current to enable the arc to be struck. As the switch member is rotated in the direction of the arrow, a resistance g is first added to the circuit Q and the resistances f, e, d, c are then successively transferred from, the circuit P to the circuit Q.
Patent GB-543501-A (GB)
Title: Improvements in electric valve converting apparatus
IPC: H02M7/51
Filed: 1940-09-16
Abstract: 543,501. Converting. BRITISH THOMSONHOUSTON CO., Ltd. Sept. 16, 1940, No. 14228. Convention date, Sept. 16, 1939. [Class 38 (ii)] In an arrangement for interchanging power between D.C. and A.C. circuits or between two A.C. circuits through a plurality of grid controlled discharge paths 20 ... 25 associated with star-connected transformer windings 13, 14 forced commutation for control of power factor is obtained by injecting commutating voltages of appropriate harmonic frequency between the star points of the windings through two transformers 30, 31 the primaries of which are in series. Thus, outside the commutating period, i.e. when only one anode is conducting, one of the secondaries of the transformers 30, 31 is open circuited causing a limitation of current drawn from the source 29 of harmonic voltage, while full voltage is developed across the open circuited winding and is available for commutation when an anode associated with that winding is rendered conductive. Specification 409,713 is referred to.
Patent GB-962697-A (GB)
Title: Improvements in or relating to pesticidal compositions
IPC: A01N25/14
Filed: 1962-04-12
Abstract: A granular pesticidal composition comprises calcium sulphate dihydrate, a compound which reacts with calcium sulphate to form a double salt or a molecular addition compound, a double salt or a molecular addition compound of calcium sulphate with such a compound and an insecticide, bactercide, fungicide, nematocide or herbicide, i.e. a pesticide.  Specified pesticides are DDT, 2,4-D, 2,4-D isopropyl ester, 2,4,5-T, Dieldrin, sodium 2-(2,4-dichlorophenoxy) ethylhydrogen sulphate, "Endrin," "Heptachlor," "Malathion" (Registered Trade Marks), Parathion, dimethyl 2,2-dichlorovinyl phosphate, p-chlorophenyl-p-chlorobenzene sulphonate, Lindare, sodium 2-(2,4,5-trichlorophenoxy) ethylhydrogen sulphate, 3,4-dichlorotetrahydrothiophene 1,1-dioxide, 3,3,4,4-tetrachlorotetrahydrothiophene 1,1-dioxide and dimethyl tetrachloroterephthalate.  A proportion of the gypsum may be replaced by a dispersing agent or anionic surfactant, a swelling agent, e.g. bentonite, wheat flour or wood flour or an acidic substance, e.g. sodium hydrogen sulphate, sodium alum or alum. Specified compounds reacting with calcium sulphate are ammonium sulphate, potassium sulphate, aluminium sulphate or urea. Preferably the granules are 10-80 mesh B.SS.  The compositions are prepared by forming a dry mixture of calcium sulphate dihydrate, a compound which reacts with calcium sulphate to form a double salt or a molecular addition compound and the pesticide adding water to the dry mix in an amount sufficient to effect pelletizing thereof and mixing the dry mixture and water so as to form pellets comprising calcium sulphatedihydrate, the compound reacting therewith the double salt or molecular compound and the pesticide.  Specification 931,160 is referred to.
Patent GB-1445592-A (GB)
Title: Insulated layers
IPC: H05K3/24
Filed: 1973-03-24
Abstract: 1445592 Moulding plastic material INTERNATIONAL COMPUTERS Ltd 13 March 1974 [24 March 1973] 14288/73 Heading B5A [Also in Division H1] In a process of applying a layer of material having desired electrical properties to a substrate 1 with upstanding pillars 3, a predetermined quantity of resin containing solid particles in pellet form 8 is placed on the substrate and the assembly compressed between a block 4 and a heated ram plate 6, with the interposition of a release sheet 9 and an elastomeric sheet 7. The layer thus has a thickness equal to the pillar height. The layer may be electrically insulating and comprise an epoxy resin with magnesium silicate particles. The substrate may be copper for carrying an assemblage of integrated circuit elements and the pillars may be applied by electrolytic deposition. After applying the insulating layer, a multi-layer interconnected assembly of thin copper elements is produced, during which various insulating layers are compressed in the assembly in the manner described to encapsulate the conductive elements. The compressed material may be electrically conductive to provide film resistors.
Patent GB-628514-A (GB)
Title: Improvements in or relating to the recovery of caffein from coffee products
IPC: C07D473/12
Filed: 1947-05-29
Abstract: Caffeine is extracted from its solution in an organic solvent (obtained by extraction of coffee or its aqueous extracts) by treatment with water and subsequent recovery from the latter; the aqueous mother-liquor may then be treated with an organic solvent to extract the remaining caffeine, this extract being either worked up separately or returned to the original solution (if the same solvent has been used).  The aqueous extract is preferably treated with activated carbon before crystallization of the caffeine.  Suitable apparatus is shown.
Patent GB-669922-A (GB)
Title: Improvements relating to the manufacture of steel
IPC: C21C5/04
Filed: 1949-05-27
Abstract: In a process for the manufacture of steel there is added to Siemens-Martin steel, steel made by the converter process which, after conversion has been treated outside the converter with silicon and/ or aluminium under a reducing slag.  Basic Bessemer steel of which the phosphorus and nitrogen contents have been reduced or acid Bessemer steel which has been dephosphorized may be used.  The Bessemer metal may be poured into a first ladle and from this into a second ladle in as large a stream as possible at the same time additions of ferrosilicon and/or aluminium are made under a white slag of finely ground lime and fluorspar.  75-5000 kgs of 90 per cent ferrosilicon and 100-500 kgs of aluminium may be added per 100 tons of steel.  The mixed steel produced is stated to be superior to Siemens-Martin steel of the same composition.
Patent GB-875332-A (GB)
Title: Improvements relating to vacuum cleaners and vacuum cleaner nozzles
Inventor: JUDD SIDNEY FRANCIS
IPC: A47L9/02
Filed: 1959-04-27
Abstract: 875,332. Suction cleaners. BYLOCK ELECTRIC Ltd. April 11, 1960 [April 27, 1959], No. 14307/59. Class 8(1). A suction relief valve for a vacuum cleaner is an associated nozzle, so constructed as to open automatically when the flow through the vacuum system falls below a predetermined value, comprising an aperture 13 normally closed by a resilient metal or synthetic plastic flap 14, which seals the edges 13<SP>1</SP> of the aperture 13, the flap 14 being guarded and its movement limited by a strip 16 slotted at 17, the outer surface of the aperture 13 being guarded by a pressed metal grill 18 held in position by top 19 which grip the underside of the ledges 20.
Patent GB-277087-A (GB)
Title: Improvements in teapots, coffee pots and the like vessels provided with spouts
IPC: A47J36/14
Filed: 1926-06-08
Abstract: 277,087. Maddock, W. E., and Maddock, G. G. June 8, 1926. Drips external devices for preventing, catching, and localizing.-The lower portion of the mouth d of the spout of a teapot, coffee-pot, or like pouring vessel is formed with a sharp edge d<2>, disposed slightly in advance of the upper edge e, and below the edge is a downwardly inclined lip portion comprising a flat, convex, or other surface f<2>, to distribute the last drop of liquid', surrounded by a slightly raised edge f<4>. A strengthening web f<5> may be provided. Reference has been directed by the Comptroller to Specifications 7794/95, 10392/08, and 197,540.
Patent GB-259869-A (GB)
Title: Improvements in coke manufacture
IPC: C10B57/08
Filed: 1926-06-08
Abstract: 259,869. Fabry, R. F. F. June 8, 1926. Coking processes.-Coal, preferably crushed, is preheated before being charged into coke ovens or gas retorts to a temperature of 212‹ F. for the purpose of increasing the dimensions of each individual piece of coke and the hardness and density of the coke produced. Specifications 21968/03, [Class 50, Fuel, Manufacture of], 9588/05, 138/08, 15964/11, 4486/13, 106,636, 107,992, and 136,866 are referred to.