baber/WOPTO huggingface dataset:
Patent GB-1163984-A (GB)
Title: Method and Means for Producing an Exponential Waveform
Inventor: MCNEILLY JOSEPH HOOD
IPC: H03K3/80
Filed: 1967-03-31
Abstract: 1,163,984. A./D. converters. STANDARD TELEPHONES & CABLES Ltd. 31 March, 1967, No. 14855/67. Heading G4H. In a P.C.M. coder of the type described in Specification 1,138,994 the initial amplitude of the damped oscillatory wave derived from a signal sample is stored on capacitor C1, and a further capacitor C2 is charged to the same voltage as C1 and is then allowed to discharge exponentially to provide the varying threshold level for trigger T, the number of times that T switches over representing the amplitude of the input sample according to an inverse sink characteristic.
Patent GB-397986-A (GB)
Title: An improved drinking appliance for birds
IPC: A01K39/026
Filed: 1932-05-26
Abstract: 397,986. Drinking-appliances for animals. TOPHAM & SNUSHALL, Ltd. and HIND, J. M., 26, Oxford Street, Birmingham. May 26, 1932, No. 14912. [Class 5 (ii).] A drinking-appliance for birds comprises a reservoir a, in the shape of a bucket but having its top closed and its bottom open, adapted to fit into a shallow circular tray b and to be clamped thereto by a rod a4, which extends across the mouth of the reservoir, engaging under oppositely directed lugs b<1> projecting from the tray. The assembled appliance can be carried by a handle a<1> and a second handle a<6> that can be folded into the reservoir to and from the tray when filling. The usual outlet aperture a<8> is provided near the open bottom of the reservoir. The central part b2 of the tray is raised to co-operate with the bottom of the reservoir.
Patent GB-734778-A (GB)
Title: Improvements in or relating to the fabrication of wrought products from metal powders
Inventor: CHADWICK RICHARD
IPC: A47F5/08
Filed: 1952-06-13
Abstract: 734,778. Powder metallurgy; extruding; forging, rolling. IMPERIAL CHEMICAL INDUSTRIES, Ltd. June 12, 1953 [June 13, 1952], No. 14922/52. Class 83(4). Working at specified temperatures.-A method of protecting compacted powdered metal bodies against oxidation during a preheating operation for subsequent hot working, comprises wrapping one or more of the compacts in an appropriate metal or alloy folded or otherwise adapted to prevent substantial ingress of oxygen. The wrapping may be simply folded around the compacts or the folds may be hermetically sealed, for example by welding. A number of cylindrical aluminium compacts, previously sintered in a non-oxidizing atmosphere, are placed end to end and wrapped in a piece of aluminium strip. The assembly is heated in an air furnace at 550‹ C. and then transferred as a unit to the container of an extrusion press. Aluminium bronze compacts, sintered in a cracked ammonia atmosphere at 950‹ C. for half an hour, are wrapped in a copper strip. The assembly is then heated in an air furnace at 900-950‹ C. for half an hour and transferred to the heated container of an extrusion press from which it is extruded into rod. The hot working operation may be forging, rolling or pressing instead of extruding.
Patent GB-439880-A (GB)
Title: Treatment of cellulose fibres, yarns, woven fabrics, and the like
IPC: C08B11/08
Filed: 1934-05-17
Abstract: Natural or artificial cellulose materials are treated with an aqueous alkali of at least 11 per cent strength, followed by treatment with an a b -alkylene oxide or hydroxy derivative thereof; the material may be subsequently treated with an acylating agent.  Examples of suitable treating agents are ethylene oxide, propylene oxide or glycide, preferably used in the proportion of up to 1\ba1/2\be molecular proportions per molecule of cellulose as C6H10O5.  In an example 14 parts by weight of bleached cotton fabric is mercerized under tension in 50 DEG  Tw. aqueous caustic soda, the fabric is wrung out and suspended in a chamber into which 3.8 parts ethylene oxide are passed the chamber is left closed for 17 hours, the fabric is then washed and dried; the product is a stiff organdie, which becomes limp when wet.  The product may be further treated in a bath at 95 DEG  C. comprising 20 parts dry pyridine and 80 parts acetic anhydride for 2 hours; the stiffness is then unaffected by moisture. In a further example, the ethylene oxide is replaced by a solution of glycide in acetone; other suitable solvents are dioxane, benzene, tetrachlorethane, and carbon tetrachloride.
Patent GB-1460191-A (GB)
Title: Photoresist article
IPC: C23C18/20
Filed: 1974-04-04
Abstract: 1460191 Photo-resist article EASTMAN KODAK CO 4 April 1974 [6 April 1973] 14987/74 Heading G2C A photo-resist article comprises an electrically insulating support coated with an etchantremovable plating layer less than 1000 Ám thick, which is coated with a layer of a photopolymerizable composition comprising a monomer having two groups of Formula CH 2 =CR<SP>1</SP> -CO- wherein R<SP>1</SP> is hydrogen or alkyl of from 1 to 4 carbon atoms, a binder removable with mild aqueous alkali and a photoactivatable polymerization initiator. The plating layer may be a metal capable of serving as an anode for electro-plating or may be one on which electroless deposition can take place. It can be a composite layer comprising a metal layer coated over a metal oxide layer or a layer of a different metal. The insulating layer may be of glass, ceramics, fibrous materials, natural polymers and colloids, natural and synthetic waxes or rubbers, synthetic resins and plastics. Preferred supports are poly (ethylene terephthalate) and polyesters from 1,1,3-trialkyl-5-carboxy-3-(carboxyphenyl) indan and aromatic diols such as bisphenol A; polyesters of 1,1'-spirobisindandiols and 1,1'-spiro-bisindan-dicarboxylic acids; and polyamides of 1,1'-spirobisindandiamines and polyesters derived from 3,6-dihydroxy-9,9-dimethylxanthene or from 7,7-dimethyl-7H-dibenzo (c, h) xanthene-5,9-sulphonyl halides. Subbing layers of gelatine or various monomers can be used. The plating layer can be applied by electroless deposition, sputtering or vapour deposition. It may be of copper, silver, manganese, iron, cobalt, nickel or zinc and adhesion is improved by providing a 0À5 to 5 Ám thick intermediate layer of chromium, titanium, titanium monoxide or chromium-silicon monoxide cermet. The plated layers are preferably copper, silver, gold or nickel. Preferred monomers are of the Formula:- CH 2 =CR<SP>1</SP>-CO-R<SP>2</SP>-CO-CR<SP>1</SP>=CH 2  where R<SP>2</SP> has the structure or or  Such monomers are described in Specification 1425423. Examples of binders removable with mild alkali are terpolymers of methyl methacrylate, ethyl acrylate and methacrylic acid in proportions of from 40% to 65%, 20% to 45% and 10% to 25%, on a molar basis. The resist layer is preferably 10 to 100 Ám thick. It is exposed to a negative of the final pattern, a resist is produced by treating the layer with the developer, and the exposed microresidue-free uncovered portions of the plating layer are then plated. Photo-resist and protected plating layer are then etched away. Initially a plating layer, photo-resist layer and possibly a cover layer can be provided on both sides of the support, for use in producing a two-sided printed circuit.
Patent GB-578189-A (GB)
Title: Improvements in jet propulsion plant
IPC: F02C3/08
Filed: 1941-11-21
Abstract: 578,189. Gas turbines; centrifugal pumps. HALFORD, F. B. Nov. 21, 1941, No. 14999. Drawings to Specification. [Classes 110 (i) and 110 (iii)] In a jet propulsion plant, a single-sided centrifugal impeller delivers compressed air to a plurality of cylindrical combustion chambers arranged in a conical formation converging to an annular inlet chamber of a single blade ring turbine. The turbine drives the compressor through a tubular shaft of a diameter large in comparison with that of the turbine and compressor shafts. The back of the centrifugal impeller has labyrinth packing fins co-operating with fins on a separable part of the casing. Cooling air is conducted by a pipe from the pump delivery to the turbine bearing and thence passes between the rotor and a cover plate, and through the rotor periphery by perforations adjacent to the blade roots. The turbine shaft bearing is carried by a conical member bolted to the pump casing and other parts are supported from the conical member so that the whole may be carried by the pump supports. The turbine rotor may comprise two discs which clamp the blade roots between them as described in Specification 578,009.
Patent GB-573497-A (GB)
Title: Improvements in electric shunts
IPC: H01C1/084
Filed: 1941-11-21
Abstract: 573,497. Metal grid and bar resistances; cooling resistances. COMPAGNIE POUR LA FABRICATION DES COMPTEURS ET MATERIEL D'USINES A GAZ. Nov. 21, 1941, No. 15023. Convention date, Dec. 19, 1940. [Class 37] The body A of a shunt resistance is composed of one or more very short narrow blades of resistance alloy, and is welded or cast on to two small blocks G of a copper base alloy provided with lugs. The blocks G are bedded by casting into two large blocks B which are provided with cooling fins. The blocks B may be of a light alloy having low resistivity, connecting blades C being cast integral with the blocks. The drop of potential across the shunt is measured on two legs D on the small blocks, these blocks being shaped to be outside the large blocks.
Patent GB-594081-A (GB)
Title: Improvements in and relating to fluorescent materials and methods of manufacturing the same
IPC: C09K11/59
Filed: 1944-08-08
Abstract: 594,081. Luminescent materials. BRITISH THOMSON-HOUSTON CO., Ltd. Aug. 8, 1944, No. 15067. Convention date, Aug. 12, 1943. [Class 39 (i)] A zinc silicate phosphor is prepared by making a mixture of zinc oxide and silica having a molar ratio ranging from 1 : 1 to 1. 5 : 1 with a small amount of manganese silicate or monoxide, and firing this at 800‹-850‹ C. in a non-reactive or reducing gas and in the presence of a non-persistent catalyst until a matrix of zinc silicate and manganese silicate is obtained in which the amount of combined manganese monoxide is from 1 to 3 per cent by weight. The non reactive gas may be nitrogen and the reducing gas hydrogen or carbon monoxide. The non-persistent catalyst may be steam, boric acid, or boron trioxide. In a modification of the process, the zinc oxide and silica may be precalcined together at about 750‹ C. and then mixed with manganese silicate and fired as above. Specification 544,444 is referred to.
Patent GB-593206-A (GB)
Title: Process for purifying cotton linters
IPC: D06L1/18
Filed: 1945-06-14
Abstract: Raw cotton linters are purified by treatment with strong aqueous alkali of a concentration equivalent to 5-15 per cent caustic soda at a temperature substantially above the boiling point of the solution and under steam pressure above atmospheric pressure.  This treatment may be followed by treatment with available chlorine.  Caustic soda solution may be used at a temperature of about 260 DEG  F. for 3-4 hours to 390 DEG  F. for 10-30 mins. under the corresponding steam pressure.  The digestion may be performed in the presence of 0.4 per cent to about 1.2 per cent turkey red oil or other detergent.  Use of a hypochlorite is preferred as bleaching agent.  In an example, raw cotton linters are digested in 7.5 per cent aqueous sodium hydroxide at 275 DEG  F. under steam pressure of 30 lbs. per square inch for three hours, washed and subjected to a series of aqueous hypochlorite treatments, washed and dried.  Cellulose derivatives prepared from cellulose purified as above have improved clarity and filterability.
Patent GB-1172131-A (GB)
Title: Moulding Compositions based on Phenolic Resins
Inventor: SCHMOLL KURT
IPC: C08G8/28
Filed: 1967-04-03
Abstract: 1,172,131. Phenolic resin moulding compositions. DYNAMIT NOBEL A.G. 3 April, 1967 [1 April, 1966], No. 15243/67. Heading C3R. Phenolic resin moulding compositions comprise a novolak, hexamethylene tetramine and 0À05-2À5% polyvinyl alcohol. These compositions may be prepared by (a) condensing a phenol with formaldehyde, (b) adding polyvinyl alcohol to the condensate, (c) distilling off the water of condensation, (d) cooling, (e) granulating and (f) adding hexamethylene tetramine to the granulate. Steps (a) and (b) may be carried out simultaneously. The polyvinyl alcohol may be in aqueous solution and contain 0À3-3% of a polyhydric alcohol, e.g. diethylene glycol. The composition may also contain a filler, e.g. sawdust, 0À4-1À6% of calcium and/or magnesium oxide, lubricants, e.g. zinc stearate and dyes. In examples, the phenol is phenol or cresol and the products are moulded into screw caps.
Patent GB-1222658-A (GB)
Title: A rotary rakehead for a haymaking machine
IPC: A01D78/10
Filed: 1968-03-29
Abstract: 1,222,658. Rakeheads for haymaking machines. JOSEPH BAUTZ G.m.b.H. 29 March, 1968 [26 April, 1967; 21 Dec., 1967; 10 Feb., 1968], No. 15250/68. Heading A1F. A rotary rakehead for a haymaking machine comprises one or more pairs of spinners mounted at an end 3 of a transverse carrier 4 and driven in opposite directions, spike arms 6-9 being provided on each spinner, and grouped, preferably three on each of a plurality of hub bodies 20, 21, so that the planes of rotation 10, 11 of the individual groups form an acute angle 12 with each other. The hub bodies 20, 21 rotate on a bearing member 24 clamped to a drive housing 27 by means of a lug 26, the drive being transmitted from an input shaft 31 to the hub bodies 20, 21 through meshing teeth 29. At least one spike arm (8), Fig. 3 (not shown), may be rotated in a bearing (18) and secured by a stud (19) out of contact with the ground during non-operative travel. The bearing member 25, Fig. 5 (not shown), may alternatively be flanged on to the housing 27, or may be formed from an angled shaft (28), Fig. 6 (not shown).
Patent GB-109335-A (GB)
Title: Means for Varying the Speed of Aeroplanes.
Inventor: MOLESWORTH HENRY BRIDGES
IPC: B64C3/54
Filed: 1916-10-26
Abstract: 109,335. Molesworth, H. B. Oct. 26, 1916. Steering and balancing; planes, construction and arrangement of.-In means for varying the speed of aeroplanes by altering the area of the main planes, the alteration of area is oftected by means of subsidiary aerofoils arranged to be collapsed on to the main planes both above and below. Fig. 1 shows a main plane a fitted with subsidiary aerofoils b which are shaped to fit closely above and below the plane and may be opened out parallel thereto. The aerofoils are connected to the plane by links h<2>, h<3> and are operated by means of a handle and levers k<3>, k<4> connected by a link i<2>. In a modification, the upper aerofoil moves forwards, and the lower one rearwards, during the opening movement. In another form, series of aerofoils are arranged to be opened out one above the other both above and below the plane.
Patent GB-1170852-A (GB)
Title: Printing Mechanism for Data Processing Machines
IPC: B41J9/42
Filed: 1967-04-04
Abstract: 1,170,852. Selective printing. KIENZLE APPARATE G.m.b.H. 4 April, 1967 [29 April, 1966], No. 15298/67. Heading B6F. In a printing mechanism with individually settable type carries, e.g. type-wheels, type bar or type segments 60 carried on print levers 64, the impression is effected by kinetic energy contained in the type carrier after its movement has been initiated by springs 17. The springs are attached to coupling elements 19 engaging the print lever 64 so that when the lever 64 is released by a latch 68 the spring 17 imparts movement until the element 19 enagges an adjustably positioned stop 40. Thereafter the print lever carries on by momentum and impression is effected without a double image being formed. Similar mechanisms are incorporated on type-wheels on a carrier swinging for impression or on a hammer-mechanism in machines with type movable on straight bars.
Patent GB-274996-A (GB)
Title: Improvements in or relating to pneumatic massage apparatus
IPC: A61H23/04
Filed: 1926-06-18
Abstract: 274,996. Mildenberg, J. June 18, 1926. Abdominal belts.-An appliance for massage of the back of the body comprises a wide, substantially inextensible abdominal belt 2 provided on the inside, at the back portion only, with a pneumatic pad 3 adapted to be inflated through a tube 4 provided with a clamp 5. Transverse slats or the like 6 are provided on the outside of the belt to prevent bulging of the belt when the pad is inflated, or the pad may be formed with internal transverse stiffening ribs 9, Fig. 9, for this purpose. A strip of fabric 7 attached to one edge of the belt may be folded over the pad. The belt is provided with a pocket 8 within which the tube 4 is coiled after inflation of the pad.
Patent GB-906391-A (GB)
Title: A method of preparing metallic compounds
IPC: C25B1/00
Filed: 1959-05-05
Abstract: 906,391. Preparing metal oxides electrolytically. MAGNETO-CHEMIE N.V. May 5, 1959 [May 5, 1958], No. 15376/59. Class 41. Metal oxides or mixtures thereof formed by co-precipitation from solutions of metal salts, are made by forming hydroxyl ions in the catholyte of an electrolytic cell having a diaphragm between the cathode and the anode, and introducing a solution of the metal salts into the catholyte, at a controlled rate and passing an electric current, so that the concentration of hydroxyl ions remains unchanged. The hydroxyl ions are generated by electrolysis of an alkali metal or ammonium salt e.g. sodium sulphate, potassium chloride. For example, a 5% solution of Na 2 SO 4  is electrolysed at 20 amps. for 5 minutes to generate a pH value of 9 in catholyte separated from the anolyte by a porcelain partition, into which catholyte a 50% solution of ZnSO 4  is then introduced at the rate of 108 cc. per hour, forming finely divided 2nO. A stainless steel cathode and platinum anode are used. Similarly the preparation of mixtures of BaO and Fe 2 O 3 ; MnO 2 , MgO, and Ve 2 O 3 ; ZnO and MgO; MnO 2  and CuO; ZnO and CuO; also nickel and vanadium oxides are described. In the case of mixed oxides a soluble metal anode may be used to form a metal oxide. A current of air or oxygen may be introduced to assist metal oxide formation. Specifications 823,436 and 864,249 are referred to.
Patent GB-366395-A (GB)
Title: Improvements relating to dies employed in the manufacture of bolts and other articles
IPC: B21K1/44
Filed: 1931-05-26
Abstract: 366,395. Forging bolts &c. CHARBONNIER, R., 38, Boulevard Pont Noyelles, Amiens, Somme, France. May 26, 1931, No. 15389. Convention date, June 19, 1930. [Class 83 (iv).] Dies.-Each element 1 of a multiple-part nut &c. die is of prismatic form and has more than one working face 3 enabling worn faces to be changed round. The elements are mounted in a conical ring 5 by means of angular blocks 6 or may be held assembled in a housing by springs or hydraulic pistons. Fig. 4 shows an assembly for irregular work, the elements 9 having four working faces 3 and four engaging faces 4 symmetrically arranged for changing round worn faces.
Patent GB-330738-A (GB)
Title: Improvements in and connected with insoles for boots and shoes
IPC: A43B17/04
Filed: 1929-05-18
Abstract: 330,738. Ballantyne, J. H., end Muller, G. May 18, 1929. Electric appliances. - To obtain an electro-therapeutic effect, insoles for boots and shoes are constructed of a length of metal wire mesh A shaped with the insole and embedded in a layer or layers B of wood-wool, fibre, &c., the whole being enclosed in a covering c of gauze or other suitable material with edging c<1>, and held together for example by stitching D. The metals used may be zinc, copper, or tin, a different metal being used in each of the pair of insoles to give the desired effect.
Patent GB-730698-A (GB)
Title: Improved dryer
IPC: F26B21/00
Filed: 1951-01-30
Abstract: 730,698. Heated drying rolls. MESSINGER, W. Jan. 30, 1951 [Feb. 1, 1950], No. 15593/53. Divided out of 730,637. Class 34 (1). An internally heated drying cylinder has an outer shell 11, an inner shell 12 formed by a plurality of adjacent sections 13, 14, 15, 16 a series of channels 75, 76, 77, 78 arranged in the periphery of each inner shell section for the passage of heating fluid, the adjacent ends of the channels in each series communicating with a common manifold and the opposite ends of the channels in each series communicating with additional manifolds. Steam is supplied via axial bore 90, manifold 94, manifolds 39, 40, 43, 44 to circumferential grooves 80, 82 from which it flows through channels 75, 76, 77, 78 and returns via grooves 79, 83 into manifolds B1, B2 and steam from another groove 81 returns via co-operating manifolds 41, 42 to a discharge manifold 102 and discharge pipe 92. Specification 658,912 is referred to.
Patent GB-1110474-A (GB)
Title: The preparation of oxalic acid
Inventor: BOICHARD JACQUES
IPC: C07C51/275
Filed: 1966-04-07
Abstract: Oxalic acid is prepared by passing gaseous propylene into an aqueous medium containing nitric acid maintained at a concentration of a least 50% by weight during the introduction of the propylene and at a temperature of 40 DEG  to 80 DEG  C.  The concentration may be maintained preferably at between 60 and 70% by weight by introduction of fresh nitric acid throughout the duration of the reaction and an example describes a suitable apparatus.  Oxalic acid of 100% purity is obtained.
Patent GB-180907-A (GB)
Title: Improvements in and relating to packings such as are used to prevent leakage between wo relatively movable members
IPC: F16J15/32
Filed: 1921-06-07
Abstract: 180,907. British Thomson - Houston Co., Ltd., (General Electric Co.). June 7, 1921. Piston, packing.- Packing of cup-leather type consists of a leather or other flexible ring 9, of U-section which is pressed against the surfaces to be packed by an inner spring ring 11 of flaring U-section. The ring 11 is made by bending a copper or other wire on itself alternately in planes at right-angles.
Patent GB-350696-A (GB)
Title: Index holding frame and index tabs therefor
IPC: B42F17/00
Filed: 1930-05-22
Abstract: 350,696. Index tabs ; visible card indexes. GOLBY, F. W., 3, John Street, Bedford Row, London.-(Acme Card System Co. ; 8, South Michigan Avenue, Chicago, U.S.A.) May 22, 1930, No. 15758. [Classes 16 and 146 (i).] A frame 2 carrying an index comprising index strips 6 or a series of overlapping cards is provided with an index tab 10 having a hook member 9 adapted to engage one of a number of apertures 8 formed along the margin of the frame. The tab is made by folding a piece of sheet metal and slightly offsetting the ends 17 to engage the margin of the frame, a clamping action being obtained by means of screws 15. A piece of wire is bent around the screws 15 and one end is caused to project so as to form the hook 9. Apertures 12 are provided in the sides of the tab so as to render visible the marking device placed therein and a tongue 14 is struck up from the tab to retain the marking device in place. Celluloid strips may be provided inside the apertures 12 to protect the marking device. In a modification, the hook 9 is stamped out of the material of the tab. The frame 2 consists of a sheet of metal, fibre, or cardboard with spacing strips 3 fixed to its edges and metal strips 4 folded over the edges and the strips 3. The strip 4 at one edge is slotted to form the apertures 8. The other strip 4 at the opposite edge may serve to serve a pintle 7 whereby the frame may be hinged to a stand.