baber/WOPTO huggingface dataset:
Patent GB-889623-A (GB)
Title: Improvements in or relating to collapsible cartons
Inventor: DENTON RALPH
IPC: B65D5/36
Filed: 1958-12-29
Abstract: 889,623. One piece carton blanks. BOXES Ltd. Dec. 23, 1959 [Dec. 29, 1958], No. 41909/58. Class 18. A carton blank, Fig. 1, which is folded to form a self-erecting carton has tabs 8 extending beyond the free edge of an adjacent side 2 so that adhesive may be applied to the tabs as the blank passes over an adhesive applying wheel. Corner gussets 6, 7 are folded inwards and overlap, the adhesive tab 8 securing the gussets 6, 7 together.
Patent GB-1235762-A (GB)
Title: Bleaching compositions
Inventor: FINE LEONARD WOLFE
IPC: C07D521/00
Filed: 1968-09-03
Abstract: 1,235,762. Bleaching fibrous materials. AMERICAN CYANAMID CO. 3 Sept., 1968 [18 Sept., 1967], No. 41926/68. Heading DIP. [Also in Divisions A5 and C2] Fabrics, e.g. of cotton, and wood pulp are bleached by contacting them at 50‹-70‹C with an aqueous composition comprising hydrogen peroxide, an organic peroxide e.g. urea peroxide, benzoyl peroxide or methylethylketone peroxide, or an inorganic persalt, e.g. an alkali metal perborate, percarbonate, manopersulphate or persulphate, and an N-acyl azole having the formula: in which X is nitrogen or C-R 1 , Y is nitrogen or CH and at least one of X and Y is nitrogen, R 1  is hydrogen, alkyl, halo or nitro, R 2  is a (C 1 -C 18 ) aliphatic hydrocarbon radical, a halo-, nitro- or alkoxy-substituted (C 1 -C 18 ) aliphatic hydrocarbon radical, a cycloaliphatic radical, an aryl radical or a hydroxy-, alkyl, nitro-, halo-, alkoxy-, carboxy- or carbonylimidazolesubstituted aryl radical and A is a mono-or di-substituted or unsubstituted 6- membered aromatic or N-heteroaromatic ring containing 1-4 nitrogen atoms, the substituents being nitro, carboxyl, hydroxyl, alkoxy, halo, sulpho, cyano or alkyl, and when X is nitrogen, R 2  is not (C 1 -C 6 ) alkyl or unsubstituted phenyl. The compound of the formula II may be a benzimide, pyridazine, pyrimidine, pyrazine, triazine or tetrazine. The N-acyl azole and peroxy compound may be present in a mole ratio of about 1 to 1.
Patent GB-1096695-A (GB)
Title: Process for pulverizing polyethylene
IPC: B29B13/10
Filed: 1966-09-21
Abstract: Linear polyethylene of particle size less than 50 microns is produced by a process which comprises subjecting linear polyethylene having a density of at least 0.950, a melt index below 100 and a particle size of at least 50 microns, to a chain scission treatment until the melt index of the polymer is at least 100, and mechanically comminuting the product.  Chain scission may be effected by oxidation below the melting point in an oven, inert non-solvent liquid medium or fluidized bed, by oxidizing the molten polymer, or by thermal degradation. Oxidation may be effected with air or other oxygen containing gases in the presence of a promoter, e.g. organic peroxides, ozone and dinitrogen tetroxide.  Comminution may be effected in hammer mills or fluid energy mills operated with compressed air.  The products may be used in fluid bed coating of metal articles.
Patent GB-1589398-A (GB)
Title: Process for extracting valuable nutrient from the leaves of water lily or water hyacinth
IPC: D06P3/54
Filed: 1977-10-11
Abstract: Textile material of polyester or polyamide fibres or filaments is dyed or printed with aqueous padding liquors or printing pastes which contain at least one dispersion dye and is then, directly or after an intermediate drying, brought into contact with liquid methylene chloride. The liquid methylene chloride is applied to the textile material in a separate step by atomising, spraying, brushing, padding, slop-padding or application of a foam thereof. The textile good is then allowed to dwell in order to fix the dye. In respect of dye utilisation (exhaustion), depth of colour and fastness properties the cold fixing process is at least as good as processes which require more expensive apparatus and more energy (for example thermosol or high temperature processes).
Patent GB-1517608-A (GB)
Title: Silver catalyst for ethylene epoxidation
IPC: C07B61/00
Filed: 1976-10-13
Abstract: 1517608 Silver oxidation catalyst TEXACO DEVELOPMENT CORP 13 Oct 1976 [29 Dec 1975 16 June 1976] 42470/76 Heading B1E [Also in Division C2] A supported silver-containing catalyst for ethylene epoxidation is made by impregnating a porous, inorganic, catalyst support with a solution of a silver carboxylate/amine complex comprising a silver carboxylate dissolved in a complexing agent selected from (a) aliphatic diamines with at least one primary or secondary amino group but no more than one primary amino group, (b) aliphatic polyamines containing at least three amino groups at least one of which is primary or secondary and (c) aliphatic amino ethers containing at least one ether linkage and at least one primary or secondary amino group, drying the impregnated support at 50-150‹C and heating the dried support at 200-300‹C to decompose the complex and activate the catalyst.
Patent GB-1109140-A (GB)
Title: Soil treating composition and process
IPC: C04B28/26
Filed: 1965-10-07
Abstract: Solutions of sodium or potassium silicate are gelled with lactones or carbonic acid esters. b -Propiolactone, dimethyl propiolactone, g -butyrolactone, g -valerolactone, g -caprolactone, d -valerolactone, d -gluconolactone, d -caprolactone, e -caprolactone and mixtures thereof, ethylene and/or propylene carbonate are exemplified. Inorganic salts, preferably having an oxidizing action, may also be present, and a large number is specified.
Patent GB-1450399-A (GB)
Title: Process for the dyeing of synthetic materials
Inventor: VON DER ELTZ H
IPC: D06P3/82
Filed: 1973-09-12
Abstract: 1450399 Dyeing process HOECHST AG 12 Sept 1973 [22 June 1973] 42837/73 Heading D1L A process for dyeing textile material of synthetic fibres comprises placing the material in wound form into a dyeing vessel, deaerating the vessel and filling it with saturated or superheated steam and forcing a dyeing liquor containing one or more water-insoluble disperse dyestuffs rapidly into the dyeing vessel from a dyebath vessel which is maintained at a pressure higher than dyeing vessel. Preferably the difference in pressure between the two vessel is 5 to 10 atmospheres gauge and is produced by pressurised steam, compressed air or a pump or by partially evacuating, or condensing the steam in the dyeing vessel. The transfer time is suitably between 3 and 60 seconds and both the dyeing vessel and the liquor in the dyebath vessel are heated to a temperature of 110‹-145‹C before transference. After liquor transfer the dyebath is circulated through the wound textile material in the conventional manner until exhaustion dyeing is completed. The textile material may be pretreated with a mixture containing 85 wt.% perchloroethylene and 15 wt.% of an emulsifier (suitably a mixture of the calcium salt of tetra-propylene-benzene sulphonic acid and the reaction product of 1 mole castor oil and 36 moles of ethylene oxide). Examples relate to the dyeing of textured polyamide and polyester and fabric produced therefrom.
Patent GB-1304568-A (GB)
IPC: C01B3/50
Filed: 1970-09-08
Abstract: 1304568 Cold separation of gas mixtures LINDE AG 8 Sept 1970 [13 Aug 1970] 42852/70 Heading F4P Separation of a low boiling point component, e.g. hydrogen from a compressed gas mixture delivered by a compressor 12 and containing a relatively high boiling point component, e.g. carbon monoxide and/or methane is effected by cooling the feed mixture by passage through heat exchanger 13, 14, 15 to effect partial condensation, separating crude hydrogen gas at 18 and further cooling at 20 thereby effecting further condensation, separating at 21 hydrogen of the required purity, warming it in exchanger 20, work-expanding it at 23, delivering a portion 24 thereof as product at 28 after further expansion at 25 and recovery of cold in exchangers 20, 26, 15, 13 and adding to the remainder at a point 30 a portion of condensate withdrawn from separator 32 and throttle-expanded at 31. recovering the cold from the mixture so formed by passage through exchangers 20, 15, 13 and then returning through a line 11 to the inlet of compressor 12. The remainder of the condensate withdrawn from 21 is expanded at 42 into a stripper 43 whilst part of the condensate withdrawn from separator 18 is expanded at 36 into a stripper 37. A liquid mixture of CO and CH 4  is withdrawn from strippers 37, 43 and is expanded through lines 39, 40, 44 into a rectification column 41. CH 4 - free CO overhead in a line 45 is in part discharged as product gas and the remainder is condensed at 26 and discharged as product liquid CO. Bottoms liquid mostly methane is vaporized at 15, 13 and is discharged through a line 47.
Patent GB-1480139-A (GB)
Title: Reinforcement of assemblies of layers of fibre reinforced structures
IPC: B26D7/08
Filed: 1975-10-03
Abstract: 1480139 Perforating and reinforcing resinfibre composite COTTON SILK & MANMADE FIBRES RESEARCH - ASSOCIATION 3 Oct 1975 [3 Oct 1974] 42868/74 Heading D1R [Also in Division B5] An assembly of two or more superposed layers of fibre-reinforced resin material is reinforced by forming an aperture through the assembly transverse to the layers of fibres by the local application of heat and pressure and filling the aperture with an elongate reinforcing element. The fibres in each layer may be coplanar and the reinforcing elements straight and orthogonal to the fibres in the layers. An array of rows and columns of reinforcing elements may be inserted. The resin matrix may be thermoplastic, e.g. a polysulphane, or thermosetting, e.g. a bisphenol-A with isophorone-diamine hardener, and the reinforcing fibres may be of cotton, linen, glass, wool, steel, boron nitride, carbon or nylon. The layer material may be in a partly cured state during formation of the aperture and insertion of the reinforcing element and may be fully cured subsequently. The reinforcing elements may comprise fibres or fibre bundles of carbon, glass or boron nitride coated with a thermoplastic resin or thermosetting resin, e.g. an epoxy resin or bisphenol-A with isophorone-diamine hardener. In the drawings sheet 23 of the assembled layers is clamped in brackets 16 against support member 21 provided with parallel rows of apertures 22, movement of crossmembers 13, 14 along rods 11 having notches 12 causing the sheet to move beneath needle 25 provided with low voltage winding 37 connected via cables 38 to an electric source to heat the needle. The needle head is slidable via sleeves 19a on guide rods 17, 18 provided with notches 20. When air cylinder 26 is actuated the first part of the piston stroke drives downwards slide 28 carrying magazine 33 and clamping plate 32 and when the clamp plate is down on the sheet 23, spring 30 controlling needle 25 is compressed by continued downward movement of the piston and the heated needle 25 passes through an aperture in the clamping plate and perforates the sheet 23. At the same time a cold or unheated needle 31 fixed on the underside of clamping plate 32 is inserted into a perforation formed on the previous down stroke of needle 25 to stabilise the aperture shape, and magazine 33 having angularly spaced apertures for receiving individual reinforcing elements, is rotated to place a reinforcing element in a preparatory position, the reinforcing element being ejected from the magazine and inserted into an aperture in the sheet by plunger 45 actuated by air cylinder 36.
Patent GB-1282487-A (GB)
Title: Audio frequency analyser
Inventor: ROBBINS KENNETH HENRY
IPC: G01R23/02
Filed: 1969-08-29
Abstract: 1282487 Measuring frequency components STANDARD-TRIUMPH MOTOR CO Ltd 18 Aug 1970 [29 Aug 1969] 43103/69 Heading G1U The amplitude of the beat frequency between a reference input tone and a noise input, these signals being combined in a ring modulator D3, D4, D5, D6, is measured by extracting the beat frequency with a 100 c/s low pass filter, amplifying TR1 and full-wave rectifying D7, D8, D9, D10 the beat frequency, applying the rectified signal to a peak follower circuit TR2, C9, sampling the potential across the peak follower capacitor C9 by a gate TR4, TR6 for small periods around the beginnings of each rectified half-cycle, the gate being maintained closed, by a gate driver A3, TR3, TR5, except when the output of the full-wave rectifier falls below a threshold set by the amplifier A3, and storing C11 and smoothing C12, C13, the samples to provide an amplitude significant output signal.
Patent GB-1072300-A (GB)
Title: Insoluble polymers of n-vinyl imides and methods of making same
Inventor: GROSSER FREDERICK
Filed: 1964-10-22
Abstract: N-vinyl imides, having the formula <FORM:1072300/C3/1> wherein R1 and R2 may be hydrogen or alkyl groups and n is an integer of from 1 to 4, are polymerized at an elevated temperature in the presence of (1) a catalyst selected from the oxides and hydroxides of alkali and alkaline earth metals and (2) water.  In a modification the polymerization is effected at a first elevated temperature for a period of time sufficient to induce incipient polymerization and then the polymerization mixture is cooled to a second and lower temperature at which temperature the mixture is maintained until polymerization is complete.  A number of suitable monomers and catalysts are listed, those exemplified are: monomers, N-vinyl succinimide; and catalysts, sodium and potassium hydroxides.  The polymers produced are insoluble in common organic solvents and water, and are not swollen by water.
Patent GB-1170196-A (GB)
Title: Rectifier Circuit.
Inventor: TABALBA CAMILO MANANSALA
IPC: H02M7/217
Filed: 1968-09-11
Abstract: 1,170,196. A.C./D.C. converter. STANDARD TELEPHONES & CABLES Ltd. 11 Sept., 1968, No. 43142/68. Heading H2F. [Also in Division H3] In a full wave rectifier as shown, Fig. 1, transistor T 1  only conducts during half cycles when terminal 2 is positive, and transistors T 2 , T 3  only conduct when terminal 1 is positive to supply uni-directional current to a load R L . The transistor T 3  is strapped as a diode and connected across T 2  to equalize the impedances in each conductive path, whereby the amplitude of the rectified half-waves will be equal. The three transistors may be in the form of an integrated circuit module.
Patent GB-1467870-A (GB)
Title: Rhythm playing system
IPC: G10H1/36
Filed: 1974-10-07
Abstract: 1467870 Rhythm generators MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 7 Oct 1974 [15 Oct 1973 16 Oct 1973 18 Oct 1973 (2) 24 Oct 1973 (2)] 43322/74 Heading G5J A normally automatic rhythm playing system has a manual over-ride switch circuit 5 for each percussion sound (e.g. snare drum, bass drum), each switch supressing its corresponding sound when depressed continually or inducing a pulse of the sound when operated momentarily. As described the percussion sound generators 6 are operated automatically according to a rhythm preselected by ganged switches (S 1 -S 5 , Fig. 3, not shown) in the matrix circuit 4 which circuit is activated by coincidence pulse patterns (Figs. 2 and 4, not shown) from the frequency divider 2. The manual over-ride circuit for a bass drum generator (5(BD), Fig. 5, not shown) comprises a resistor, capacitor and earthing switch (S 6 ). The bass drum generator (6(BD)) comprises a pair of transistors with a parallel T feedback circuit, this system being relatively temperature insensitive.
Patent GB-1306018-A (GB)
IPC: A23K1/00
Filed: 1971-09-17
Abstract: 1306018 Ruminant feed additives SMITH KLINE & FRENCH LABORATORIES 17 Sept 1971 [21 Sept 1970] 43359/71 Heading A5B Veterinary compositions, to be administered orally to ruminants permitting the passage of biologically active compounds through the rumen unchanged and resulting in the release and absorption of the compounds in the lower digestive tract, comprise the biologically active compound embedded in or coated by an intimate mixture comprising glyceryl tristearate and a monocarboxylic C 16-22  fatty acid having a melting point less than 20C. The fatty acid may be oleic, linoleic, linolenic, petroselenic or palmitoleic acid. Certain natural or partially processed oils such as soybean, corn, cottonseed, peanut and olive oils which contain mixtures of the fatty acids, in the uncombined state, may be used. The biologically active compound may be an amino acid such as methionine or lysine; an antibiotic such as penicillin, tetracycline, chloramphenicol; a sulphonamide such as sulphamethazine or sulphathiazine; a tranquilizer such as chlorpromazine, prochlorperazine or trifluoperazine, a sedative such as phenobarbital or amytal; a vitamin such as vitamin A or vitamin D or vitamin combinations; anthelmintics such as piperazine phosphate; a hormone growth supplement such as stilbesterol: or a growth-promoting agent including furazolidone used in the treatment of bacterial enteritis.
Patent GB-951423-A (GB)
Title: Preparation of 1-alkyl-1-alkoxy-3-aryl ureas
IPC: C07C273/18
Filed: 1961-12-06
Abstract: 1-Alkyl-1-alkoxy-3-aryl ureas are prepared by reacting a 1-hydroxy-3-aryl urea with dimethyl or diethyl sulphate under alkaline conditions.  The starting materials may be obtained by reacting the aryl isocyanate with hydroxylamine, preferably in the presence of a water-miscible organic solvent which does not react with the aryl isocyanate. In examples the aryl group is phenyl and phenyl substituted as follows: 2-methyl, 3-methyl, 4-methyl, 2-methoxy, 4-methoxy, 3-chloro, 4-chloro, 2, 5-dichloro and 4-bromo. Suitable isocyanate starting materials are listed. The final products are herbicides.  Specification 852,422 is referred to.
Patent GB-994471-A (GB)
Title: Improvements relating to indirectly heated cathodes for use in electron valves
IPC: H01J1/26
Filed: 1961-12-12
Abstract: The inner surface of an indirectly-heated cathode is provided with a black layer obtained by the reaction of finely-divided aluminium with the metal of the cathode, which may be Ni, Mo, Fe or alloys thereof. The cathode may be coated with a suspension of 20 gms. of aluminium powder in a 140 mls. solution of 2,5 gms. of nitrocellulose in 75 gms. of ethyleneglycol and 22,5 gms. of butanol, or in a methylmethacrylate solution, e.g. by sucking into a tubular cathode, or by spraying or atomizing.  For a nickel cathode, 5-15 gms. of nickel oxide may be added to the suspension.  The coated cathode is sintered in vacuo or in a neutral or reducing atmosphere at 610-650 DEG C. for 15-30 minutes to form the black layer.  Afterwards, part of the aluminium may be oxidized by sintering in a humid, reducing atmosphere at 550-600  DEG C. for 30 minutes.
Patent GB-1089476-A (GB)
Title: Semiconductor devices
IPC: H01L23/48
Filed: 1965-10-22
Abstract: 1,089,476. Semi-conductor. devices. WESTINGHOUSE ELECTRIC CORPORATION. Oct. 22, 1965 [Nov. 12, 1964], No. 44812/65. Heading H1K. A semi-conductor wafer 18 has first and second electrodes 28, 30 disposed on one of its major surfaces, the terminal connectors to the electrodes comprising a first contact member 42 in contact with the first electrode 28 and having a hollow member 46 extending therefrom and a second contact member 52 which has a lead 50 extending through the hollow member and is urged, e.g. by a spring 54, into good electrical contact with the second electrode 30. The wafer 18 may be of any type having three or more contacts, but preferably forms part of a rectifier. The wafer is soldered to a support plate 20 of molybdenum, tungsten or tantalum by means of a layer 24 of aluminium, and is placed on the pedestal 14 of a massive member 10 of copper, brass or aluminium with a layer 26 of silver or gold interposed. The first contact member 42, which is made of molybdenum, has a silver or gold layer 44 in engagement with the gold alloy electrode 28 and is urged into contact with the electrode by a pair of spring washers 62, 64 held in place by a cap 70 screwed on to the pedestal 14. The second contact member 52 is secured to the lead 50 which extends through a slot in the wall of the member 46 and down through a slidable insulating plug 48. The spring 54 is maintained under compression against the plug 48 by means of a plug 56 closing the end of the member 46. The assembly is encapsulated in a housing comprising a ceramic creep insulator 84 having a lower member 86 welded to the member 10 and an upper member 74 provided with a hollow stem 78 fitting over the member 46. Reference has been directed by the Comptroller to Specification 1,009,544.
Patent GB-1362174-A (GB)
Title: Production of sheet material for use as gaskets
IPC: F16J15/12
Filed: 1970-09-21
Abstract: 1362174 Coated sheet materials T B A INDUSTRIAL PRODUCTS Ltd 26 Aug 1971 [21 Sept 1970] 44903/ 70 Heading B2E [Also in Division D1] A composite sheet for use as a gasket material comprising surface coatings of fibrereinforced elastomer bonded to both faces of a metal core is produced as shown in Figure 2 by simultaneously forming curable doughlike fibre reinforced elastomer composition into a sheet and applying the sheet to one face of the metal core of indefinite length by feeding the metal core 1 and, on one face of the metal core a dough-like composition containing fibre, elastomer, curatives, fillers and a solvent system including a volatile solvent for the elastomer and a non-solvent liquid through a nip between two calender rolls 12 to spread the elastomer composition over the metal core and apply it thereto to form one coating, the non-solvent liquid preventing adhesion of the composition to the rolls, passing the coated metal core to a drying device 14 to remove the solvent system from the composition, passing the dry, but uncured, coated metal core together with further dough-like composition on the other face of the core through a second nip between two calender rolls 16 to spread the composition over the other face of the core and applied thereto to form a second coating, passing the core with its second coating to a drying device 18 to remove the solvent system from the second coating, passing the core with its coating through a further nip between two calender rolls 20 to consolidate the coatings and bond the coatings to the core, and then passing the coated core into an oven 21 to cure the composition. Preferably the fibre in the composition is asbestos, the volatile solvent is a liquid hydrocarbon, e.g. toluene and the non-solvent liquid is water. The metal core may be of woven wire gauze or expanded metal, or a perforated sheet, or preferably a plain or an embossed sheet. The core may be coated with an adhesive by drawing through bath 7 and then upwards through solvent extraction tower 9 before the dough-like composition is applied to it, preferably an adhesive which is only partly soluble in the solvent system in the composition. The adhesive may be a solution of nitrile rubber and a phenolic resin. The elastomer in the dough-like composition may comprise a styrene-butadiene.