baber/WOPTO huggingface dataset:
Patent GB-898932-A (GB)
Title: Improvements in casting metal powders
IPC: B22F3/22
Filed: 1959-07-07
Abstract: Sintered tungsten or molybdenum products are formed from a slip casting composition with a pH valve of 3 to 9 and comprising the metal powder, a liquid carrier, a viscosity controlling agent, an anti-foaming agent and a melting agent.  A molybdenum slip composition is formed from a mixture of molybdenum powder at least 90% being less than 10 micron, a liquid carrier such as water or polyvinyl alcohol in a proportion of 1,25 to 1,5 parts per part of powder, an anti-foaming agent such as the silicones, octyl alcohol or amyl alcohol, 0,01 to 0,5 gms. per 100 ccs. of molybdenum of a melting agent such as dioctyl sodium sulphosuccinate and a viscosity controlling agent such as polyvinyl alcohol, sodium or ammonium alginate and methyl cellulose.  The slip with a pH of 6 to 7 is cast into an absorbent mould and the green casting is sintered at 1900 DEG C. in hydrogen.
Patent GB-1448386-A (GB)
Title: Electrostatographic transfer system
IPC: G03G15/16
Filed: 1974-05-24
Abstract: 1448386 Transferring toner images XEROX CORP 24 May 1974 [29 May 1973 5 June 1973] 23248/74 Heading B6C [Also in Divisions G2-G3] In an electrostatographic apparatus of the kind in which a toner image is transferred from a photoconductor 11 to a paper sheet 16 using a bias roller 15 with a conductive backing roll 12, Fig. 3, the roller 15 comprises an electrically conductive core 22 and a compressible body 21 of foraminous open cell material which is highly compressed in the nip area 17. The body 21 may have a liquid-impervious coating 20 on its outer surface, in which case its open cells may be filled with a resistive liquid instead of air. The torque applied by the drive for the roller 15 is set to produce a bulge in the body 21 in the region of the pre-nip gap W to suppress corona generation in said gap W, while a controlled corona is generated in the post-nip gap Y to aid retention of the transferred toner on the paper 16. Rollers, similarly constructed to the roller 15, may be applied to photoelectrophoretic processes (see Division G2-G3). In another embodiment, Fig. 4, the core 122 of the bias roller 115 is formed of perforated metal and is suction backed over a segment of its rotation, as shown, to hold the paper sheet to the roller in the region of said segment. The foraminous body 121 is provided with a paperregistration lip 127, and is cleaned by a vacuum device 126.
Patent GB-307312-A (GB)
Title: Improvements in or relating to grinding mills
IPC: B02C4/22
Filed: 1927-09-05
Abstract: 307,312. MacCallum, A. E. G. Sept. 5, 1927. Roller and roller-and-breast mills.-In roller grinding mill a positively driven pilot roll or rolls is disposed in advance of the point of engagement of two grinding elements, the roll or rolls being of such dimensions and driven at such a speed as to create a pressure in the material under treatment sufficient to force it between the grinding elements. As applied to a roller-and-breast mill, a breast b is supported on a rail i and is adjustable relatively to the roll a by a screwed rod c and hand-wheel d. A pilot roll e is mounted on brackets h and rotates in the opposite direction to the roll a through gearing from the main power shaft of the mill. A spring-steel scraper f is attached to the breast b and contacts by its free edge with the pilot roller e. The pilot roll e is adjusted relatively to the roller a by means of a screw k and is preferably provided with a grooved &c. surface. The material under treatment is carried downwardly by the grinding roll a towards the breast b but during its progress downwardly the material is picked up in the hollows in the surface of the pilot roll e from which it is removed by the scraper f and accumulates in front of the breast so that the pressure set up in the material forces it between the grinding bar and roll. The drive to the pilot roll may be arranged for variation in speed so as to vary the pressure of the material in front of the block. A device for spreading the material over the roll may comprise the forward edge of a hopper directed against the direction of rotation of the grinding roll, the distance of such edge being adjustable. In a modification as applied to a co-operating pair of grinding rolls, a pair of meshing, grooved or fluted rollers is arranged above the point of contact of the grinding rolls such that each grooved roller touches one of the grinding rolls. The material is forced down between the grinding rolls, the meshing engagement of the two rollers serving to force the material from the grooves as they rotate. The grinding roll may be arranged to reciprocate axially as well as rotate.
Patent GB-895390-A (GB)
Title: A method of manufacturing synthetic filaments of polyvinyl alcohol of high quality
IPC: D01F6/14
Filed: 1959-07-07
Abstract: Semi-melt spun polyvinyl alcohol filaments, having a tenacity not exceeding 1,5g/denier after drying to less than 10% moisture, are drawn to 5 to 15 times their original length at a temperature above 140 DEG  C., but not exceeding the melting point of the filaments. In "semi-melt" spinning a concentrated solution of the spinning material in a suitable solvent is made at a high temperature, so that on spinning into air the solution is coagulated by cooling, as well as by evaporation.  The dried filaments may be subjected to a preliminary hot drawing if desired, and the filaments may be wound up at a speed of 0,3 to 1,0 times the linear extrusion speed of the spinning solution. After the hot drawing the filaments may be heated at constant length, or while free to shrink, suitably up to 20%, at a temperature not lower than that used in the hot drawing.  In a preferred method, a liquid polyvinyl alcohol/water mixture is formed having a polyvinyl alcohol content of 30-65% by weight, preferably 40%, the polyvinyl alcohol having a degree of polymerization of 1,700, and is semi-melt spun under such conditions of temperature and spinneret-hole size as to avoid bubble formation.  The filaments formed are dried, while avoiding drawing as far as possible, until their water content is below 10% by weight, to produce filaments of tenacity not exceeding 1,5 g/denier, which are then drawn to 5 to 15 times their original length at a temperature above 140 DEG  C., and finally heat-set with 0 to 20% shrinkage.  Specification 895,389 is referred to.
Patent GB-1432066-A (GB)
Title: Method of manufacturing brazed articles particularly heat exchangers
IPC: B23K35/28
Filed: 1973-05-16
Abstract: 1432066 Brazing SOC ANON DES USINES CHAUSSON 16 May 1973 [23 May 1972] 23425/73 Heading B3R In a method of manufacturing a brazed article, e.g. a heat exchanger, the parts of the article are formed from aluminium alloy sheet containing magnesium and silicon and up to 0À05% copper, the parts are assembled and degreased, the assembly is heated to 580- 600‹ C., with a brazing alloy containing aluminium and 7-15% silicon in the presence of a metal or metal salt to promote removal of oxides on the parts to melt the brazing alloy and produce magnesium silicide in solution in the aluminium alloy of the parts, the assembly is cooled at a rate of at least 1‹ C. per sec. to about 300‹ C. to solidify the brazing alloy and maintain at least some of the magnesium silicide in solution, the assembly is heated to 180-250‹ C. to precipitate the magnesium silicide and then the assembly is cooled to ambient temperature. Sheets or strips of an aluminium alloy containing 0À1-0À5% silicon and 0À3-0À8% magnesium and possibly up to 0À3% iron, 0À5% zinc, 0À5% manganese and 0À05% copper, are heated to 250-290‹ C. for softening and header tank parts, louvres or straps are produced therefrom. The parts are assembled with an aluminium alloy containing 7-15% silicon and possibly 0À1-12% zinc, 0À005-3% boron or lithium, 0À01-10% magnesium and bismuth or antimony coated, hot or cold, on the parts, applied as a paste or by flame spraying with an anhydrous flux. If a simple aluminium silicon alloy is employed scraping, followed by dipping in acid or alkaline, rinsing in water and drying is necessary. These steps are unnecessary if the additives are present. The parts are temporarily joined by local welding or by jigs and are degreased in trichloroethylene and steam. The assembled parts may be brazed in an oven when they are dipped in or sprayed with aqueous flux containing metal salts and then heated in the oven to 580-600‹ C. at which temperature the brazing alloy melts and the magnesium and silicon of the parts form magnesium silicide. The parts are cooled by blowing air or gas thereon until the temperature reaches 300‹ C. when water is sprayed on the parts. The parts are then washed in an acid bath to remove residual flux and then in a water bath and then dried at 180-250‹ C. for 15 hours when the magnesium silicide is precipitated. Alternatively the parts are brazed in a salt bath by preheating to 540-560‹ C. in an oven and then dipping in a salt bath to melt the brazing alloy. The parts are then rapidly cooled as before. In a further alternative the brazing is effected in a vacuum or neutral atmosphere oven and in this case metallic magnesium is present adjacent the parts. The magnesium may be provided in the brazing alloy, by diffusion under vacuum or as a suspension in methylcellulose.
Patent GB-175309-A (GB)
Title: Improvements in resilient tyres and method of and apparatus for making the same
IPC: B29D30/06
Filed: 1920-08-10
Abstract: 175,309. Wheatley, G. H. Aug. 10, 1920. Moulding wheel tyres. - In order to make the apparatus and method described in Specification 150,306 applicable to tyres having non-extensible beaded edges, the sections 3, 4 of the expansible cone, which are forced outwards by wedge-shaped members 38, are made in segments so that the cone may be collapsed for removal of the tyre.
Patent GB-1326816-A (GB)
Title: Parking apparatus
IPC: E04H6/12
Filed: 1971-04-19
Abstract: 1326816 Parking apparatus K KLAUS 19 April 1971 [7 March 1970 20 March 1970] 23470/71 Heading B8E Platforms 3, 4, Fig. 1, for parking cars are raised and lowered together on guides 2 to bring the platform 3 into loading position, and the platform 4 is independently tiltable by a ram 5 into the position 7 to permit loading. Two fixed lower platforms and a tiltable upper platform may be provided, Fig. 2 (not shown). Fig. 3 shows an arrangement in which the upper platform 14 has a telescopic portion 14. Alternatively a movable ramp may be provided. Fig. 5 shows an embodiment in which the platforms 3, 4 are raised by a ram 5 which also brings the platform 4 into a horizontal position. The sloping and horizontal positions are defined by stops 20, 21.
Patent GB-1150904-A (GB)
Title: Improvements in or relating to Adhesive Synthetic Resin Compositions and Method of making same
IPC: C09J131/04
Filed: 1966-05-25
Abstract: 1,150,904. Laminates; plywood. NATIONAL STARCH & CHEMICAL CORP. 25 May, 1966 [8 June, 1965], No. 23488/66. Headings B5L and B5N. [Also in Division C3] Aqueous synthetic resin adhesive compositions are prepared by (a) sulphonating a #-stage phenolic resin to render an aqueous solution thereof compatible with aqueous vinyl acetate polymer emulsions, and (b) mixing such solution and emulsion in proportions providing 5 to 70% of sulphonated phenolic resin and 30 to 95% vinyl acetate polymer based on the weight of solids in the composition. The phenolic resin may be derived from an unsubstituted or a C 1-6  alkyl- or alkenyl-substituted phenol; the higher the molecular weight of the resin the higher will be the degree of sulphonation necessary, e.g. 1 to 5% sulphonation when the M.W. is 500 to 1000 and up to 30% when it is 1000 to 5000. The sulphonated resin solution may have a pH of 7À5 to 8À5. The vinyl acetate polymers may be homopolymers or copolymers containing up to 20% comonomer, e.g. alkyl acrylates or methacrylates; mono- or di-alkyl maleates, fumarates, itaconates or citraconate; crotonic, acrylic, methacrylic, maleic, itaconic or citraconic acid; vinyl or vinylidene chloride; acrylamide or N-methylol acrylamide. Polyvinyl alcohol is the preferred emulsifier for the polymer emulsion. An acidic metal salt curing agent, e.g. chromic nitrate or perchlorate or aluminium nitrate or chloride, may be added not more than 48 hours before use of the adhesive. Uses of the adhesives. Specified uses of the adhesives are the bonding, saturation or lamination of porous substrates, e.g. wood, tempered hardboard, textiles, leather, paper and cement asbestos board, and the manufacture of plywood and wood particle board. Special reference is made to the bonding of " finger joints" and the construction of laminated beams and arches. They may also be used to make prefabricated wall panels by binding skin materials such as metals, cardboard, plywood, glass and asbestos board to cores such as foamed plastics, honeycomb cores, insulation board and particle board. In examples, plywood is made from 3-plys of 1/16 inch birchwood.
Patent GB-1034533-A (GB)
Title: Improvements in or relating to anti-nuclear radiation materials and processes for manufacturing same
IPC: C08K3/08
Filed: 1964-06-05
Abstract: 1,034,533. Radiation absorbing materials. PNEUMATIQUES CAOUTCHOUC MANUFACTURE ET PLASTIQUES KLEBER COLOMBES. June 5, 1964 [June 7, 1963], No. 23501/64. Heading G6R. A material for protection against gamma rays and neutrons consists of a creep-resistant mixture of a polyolefine and a lead compound rich in lead. Lead compounds specified are litharge, lead dioxide, lead sesquioxide, minium, lead carbonate (e.g. cerussite), lead sulphide (e.g. galena), divalent lead chloride, and lead sulphate. The polyolefine may be high or low pressure polyethylene, polypropylene, or a copolymer. The ingredients may be mixed at 130-220‹ C. and formed into bricks. Boron or a derivative thereof may be added to absorb slow neutrons. The material is suitable for the protection of nuclear reactors mounted on vehicles.
Patent GB-1125797-A (GB)
Title: Improvements in and relating to a composite panel and improved manufacturing methodtherefor
IPC: B27N3/00
Filed: 1966-05-26
Abstract: 1,125,797. Coatings. SOC. DES. PANNEAUX LANDAIS SOPALAND. 26 May, 1966 [28 May, 1965], No. 23546/66. Heading B2K. A composite panel comprises a core at least one surface of which has a coating containing particles of cellulose or wood dust having a length of 0.3-0.5 mm embedded in a polymerised substance constituted by a resin of urea or melamine. The core may be of agglomerated plant particles or fibres, or a sheet of metal e.g. aluminium. The coating may be transparent or opaque and may contain a metallic powder. The panel is prepared by placing the core in a press with at least one metal sheet on one side of the core or with separate metal sheets on opposite sides of the core the inner face of the or each metal sheet being coated with a mixture of a powdered urea or melamine resin and a coloured or colourless filler containing cellulose or wood dust fibres having a length of 0.3-0.5 mm the mixture being insoluble in aqueous solutions, and in contact with the core and pressing the metal sheet or sheets and core together at an elevated temperature to coat the core with said mixture.
Patent GB-1074620-A (GB)
Title: Improvements in or relating to the manufacture of decorative glass
IPC: C03B13/10
Filed: 1965-06-02
Abstract: Decorative glass is made by dispersing granular material having a coefficient of expansion similar to that of the glass over a surface of hot glass so that the granules while retaining their discrete form, are incorporated into the surface of the glass.  The granular material is preferably a glassy material, e.g. crushed opaque or coloured glass, and can be applied by sprinkling, blowing or dusting on to a ribbon of glass as it is formed, e.g. as by rolling, the material (14) being fed from a hopper (15) above water cooled casting rollers (5), (6) with a slot shaped spout (16) adjacent the surface of the molten glass (9) and the upper roller (5). The hopper (15) may be vibrated to assist uniform distribution.
Patent GB-225959-A (GB)
Title: Improved means for securing petrol and like cans or containers on motor vehicles
IPC: B60R11/00
Filed: 1923-09-21
Abstract: 225,959. Davy, W. J. Sept. 21, 1923. Petrol and like cans, detachably securing to running - boards. -A device for attaching petrol &c. cans to the running - board or similar part of a motor vehicle comprises a pair of plates 1, Fig. 2, having inturned flanges 2 adapted to engage the bead 3 on two sides of the can when the latter is slid into position between the plates, stops 6 on the plates for limiting the movement of the can in one direction, and a clamping-bar 7 hinged to a lug 3 on one plate and adapted to engage a notched lug 10 on the other plate, in which it is locked by a padlock 8. In a modification, Fig. 3, only one plate is provided with an inturned flange 2, the other plate having an opening which admits the can and is closed by the clamping-bar 7 which in this case extends between lugs 9, 10 on the same plate. The can-holder may be combined with a device for securing the screw-cap 20 in the filling opening 15, such device comprising a rod 16, Fig. 1, bent to pass over the screwcap and having at one end a circular ring 17 embracing the opening 15 and at the other end a hook portion 21 engaging under the can, the rod 16 being locked in position by the clamping-bar 7.
Patent GB-189862-A (GB)
Title: Improvements in dynamo-electric machines
IPC: H02K1/14
Filed: 1921-09-06
Abstract: 189,862. Electro-Dynamic Construction Co., Ltd., and Pensabene, N. Sept. 6, 1921. Pole-pieces; yokes. - In order to enable the closely-fitting field-magnet coils of a multipolar split-pole machine to be placed in position on the poles, some of the magnet sections, for example, 2, 4, are capable of being moved radially inwards. The coil W is placed on its pole when section 2 occupies the dotted position shown, after which the section is moved back.
Patent GB-634820-A (GB)
Title: Improvements in or relating to electron-microscopes
IPC: H01J37/22
Filed: 1947-08-27
Abstract: 634,820. Electron microscopes. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. Aug. 27, 1947, No. 23676. Convention date, Aug. 30, 1946. [Class 39 (i)] In a microscope the film 11 or plate, recording directly the electron image, is located so that its distance from the centre 8 of the projection lens is about one-fifth, and not more than onehalf of that of the fluorescent screen 7. The tube shown comprises magnetic lenses 3, 4, 5, an object 9 and a tube 12 through which it can be continuously evacuated. The film 11 or plate is forced into the tube through a sealing medium, e.g. rubber strips, in a tube 10.
Patent GB-1436098-A (GB)
Title: Liquid applicator apparatus
IPC: G03G15/10
Filed: 1974-05-24
Abstract: 1436098 Liquid developing apparatus XEROX CORP 24 May 1974 23708/74 Heading G2H In an electrostatographic apparatus, in which developer is applied by a rigid cylindrical roller 7 to an electrostatic image bearing resilient surface of, for example, a xerographic drum; the or each end of the roller 7 is prevented from damaging the resilient surface by provision of at least one end portion 18, formed of semi-rigid material, of substantially the same diameter as the body portion 16 of the roller 7.
Patent GB-391011-A (GB)
Title: Improvements in and relating to electric welding
IPC: B23K9/073
Filed: 1932-08-24
Abstract: 391,011. Arc welding. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Chapman, V. J. ; 25, Lakewood Avenue, Schenectady, New York, U.S.A.) Aug. 24, 1932, No. 23724. Convention date, Aug. 27, 1931. [Class 39 (iii).] The generator 6 supplying the armature of the feed motor 5 has differential field windings 8, 9, the former being adjustably connected across a resistance 12 in the arc circuit and the latter being connected across the arc. At excessive arc voltages relay 18 operates to decrease the excitation of the field 9 by increasing the resistance in the field circuit. Specification 373,735 is referred to.
Patent GB-1202105-A (GB)
Title: Method for producing tubes
IPC: B21B23/00
Filed: 1968-05-17
Abstract: 1,202,105. Rolling tubes. VALLOUREC. 17 May, 1968 [18 May, 1967], No. 23738/68. Addition to 1,150,582. Heading B3M. A tube is produced from a blank by rolling the blank in a mill of the type described in Specification 1,150,582 to a profile as shown in the accompanying figure, the centre section 4 of the blank having a uniform thickness. The mill includes rolls surrounding the tube and extending generally longitudinally between respective fixed and a movable apertured plates. Rotation of the movable plate varies the angle of skew of the rolls and the working diameter of the pass they define. The thickened ends of the blank are parted off and the tube is progressively reduced in several stands having toroidal rolls 7 to its final thickness. The resulting and fractions of tube which have to be discarded are of shorter length than is usual.
Patent GB-808636-A (GB)
Title: Basically substituted heterocyclic compounds
IPC: C07D237/32
Filed: 1956-08-01
Abstract: The invention comprises compounds of the formula <FORM:0808636/IV (b)/1> and salts thereof, wherein R is a benzene ring and <FORM:0808636/IV (b)/2> is the residue of a tertiary amine, which may optionally bear substituents which do not react with halogenoalkyl compounds, such as alkyl alkoxy and aryloxy radicals and the corresponding thio radicals, in the 4-position and/or in the residue R.  The compounds are made by reacting the corresponding 1 - oxo - 1 : 2 - dihydrophthalazine, suitably in the form of its alkalimetal salt, with a teritary aminoalkyl halide preferably at 40-60 DEG  C. Suitable tertiary aminoalkyl halides include the diethylamino-, dibutylamino-, piperidino-, morpholino- and N-methylanilino-, ethyl chlorides and 1-dimethylamino - 2 - chloropropane and 2 - dimethylamino - 5 - chloropentane.  The products are suitable isolated in the form of their acid addition salts such as the hydrochlorides, hydrobromides, sulphates, picrates, benzoates, salicylates and gentisates.  Examples describe the preparation of 2-(b -diethylaminoethyl), 2-(b -dimethylaminoethyl), 2 - (a  - methyl - b  - dimethylaminoethyl), 2 - (b  - piperidinoethyl) and 2 - (b  - dibutylaminoethyl), 1 - oxo - 1 : 2 - dihydrophthalazine and also the 2-(b -diethylaminoethyl), 4 - methyl -, 4 - methoxy -, 4ethylthio -, and 4 - b  - diethylaminoethoxy-, 1-oxo-1 : 2-dihydrophthalazines.  4 - Substituted - phthalazines.  The 4 - b  - diethylaminoethoxy -, 4 - methoxy - and 4 - ethylthio - 1 - oxo - 1 : 2 - dihydrophthalazines used as starting materials are prepared by treating 1 : 4-dichlorophthalazine with sodium diethylaminoethoxide, sodium methoxide and sodium ethylmercaptide respectively to replace one halogen atom and replacing the second halogen atom by hydrolysis.