baber/WOPTO huggingface dataset:
Patent GB-857180-A (GB)
Title: Manufacture of nitrogen-containing polymers
IPC: C10L1/236
Filed: 1959-07-27
Abstract: A copolymer is prepared by heating a mixture of vinylpyridine, one or more acrylic esters of aliphatic alcohols at least one of which is a long chain alcohol having 8 or more carbon atoms, a polymerization catalyst (e.g. a peroxide) and a neutral petroleum oil, and during the course of the reaction adding more vinylpyridine to keep the ratio of the vinylpyridine and the acrylates constant, the total vinylpyridine and total acrylates being in a proportion to produce a copolymer having the two components in a mol ratio between 1:15 and 2-1.  The neutral oil is added in an amount between 10 and 45% by weight of the monomers, and may be added when 20% to 70% of the acrylic acid ester has been converted; up to 70% of the oil may be replaced by benzene or toluene.  Additional catalyst may be added during the polymerization to maintain a concentration above 0,0% by weight. The process may be batchwise or continuous.  The temperature is between 80 DEG C. and 150 DEG C.  In examples copolymers are prepared from mixtures containing 2-methyl-5-vinylpyridine, 5-ethyl-2-vinylpyridine, stearyl methacrylate, lauryl methacrylate, methyl methacrylate, butyl methacrylate, ditertiary butyl peroxide, neutral oil and benzene.  Lists of suitable vinylpyridines, esters of acrylic acids and catalysts are given.ALSO:A lubricating oil composition contains 0.01 to 10% by weight of a copolymer prepared by heating a mixture of a vinylpyridine, one or more acrylic esters of aliphatic alcohols at least one of which is a long chain alcohol having 8 or more carbon atoms, a polymerization catalyst (e.g. a peroxide) and a neutral petroleum oil, and during the course of the reaction adding more vinylpyridine to keep the ratio of the vinylpyridine and the acrylates constant, the total vinylpyridine and total acrylates being in a proportion to produce a coplymer having the two components in a mol ratio between 1:15 and 2:1.  The lubricating oil may be a mineral oil or a synthetic oil, or a blend of a mineral oil with a fatty oil such as castor oil and/or synthetic oils such as polymerized olefins, copolymers of alkylene glycols and alkylene oxides, organic esters such as 2-ethylhexyl sebacate, or a dimethyl silicone polymer.  The neutral oil is added in an amount between 10 and 45% by weight of the monomers, but up to 70% of the oil may be replaced by benzene or toluene. In examples, mineral lubricating oil compositions contain copolymers prepared from mixtures containing 2-methyl-5-vinylpyridine or 5-ethyl-2-vinyl-pyridine, with a plurality of stearyl methacrylate, lauryl methacrylate, methyl methacrylate, and butyl methacrylate, together with ditertiary butyl peroxide, neutral oil and benzene. Lists of suitable vinylpyridines, esters of acrylic acids and catalysts are given.
Patent GB-1255073-A (GB)
Title: Improvements relating to electrical circuit assemblies
Inventor: HULMES HAROLD
IPC: H05K1/18
Filed: 1969-05-20
Abstract: 1,255,073. Circuit assemblies. FERRANTI Ltd. 13 May, 1970 [20 May, 1969], No. 25693/69. Heading H1R. An electric circuit assembly consists of a plurality of components, including at least one semi-conductor device, mounted on a network of conductors, which is in the form of a lead frame formed from a metal sheet. The semi-conductor device, and the adjacent parts of the conductor network, are encapsulated in a potting compound; the encapsulation acting as a support for the conductors connected to the semiconductor device. The whole assembly may also be subsequently encapsulated in a suitable compound. Fig. 1 shows an amplifier circuit in one stage of production, before encapsulation. An integrated circuit 11, and a transistor 12 are mounted on the conductor network 10. The network 10 may be made by stamping out the desired apertures in a thin sheet of a suitable nickel-iron-cobalt alloy, or by selectively etching such a sheet, and is coated with gold. The boundary frame 17 may act just as a support to the network, by breaking the extension pieces 21B near the frame 17 and applying an insulating band across 21A and 21B, or may also act as a conductor, by keeping 21B complete. Cross-leads 22, 22A and 22B act as support means during construction, and are later broken off. The leads 22A and 22B also enable the semi-conductor devices to be tested separately after they have been encapsulated, but before the whole assembly is encapsulated. The parts 24 of the leads are provided for connections to be made to components. The semiconductor devices 11 and 12 and the adjacent leads are separately encapsulated in potting compounds, and the whole assembly is then encapsulated in a different potting compound. The support frame may then be broken away altogether, if it is not required as a conductor.
Patent GB-894465-A (GB)
Title: Improved mats, boards or shaped pieces made from glass fibre or other thermoplastic mineral materials
IPC: D04H1/42
Filed: 1960-07-25
Abstract: 894,465. Agglutinated fibrous sheet materials. COMPAGNIE DE SAINT-GOBAIN. July 25, 1960 [Aug. 4, 1959], No. 25775/60. Addition to 849,833. Class 140. A process for making mats of glass or other thermoplastic mineral fibres comprising an autogenously-agglomerated mixture of at least two different categories of fibres having the same chemical composition but different thermoplastic properties, the softening temperatures of the categories differing markedly from one another, is characterized in that the mat is pre-heated before agglomeration. As shown, a mat 1 of fibres to be agglomerated is drawn between conveyer belts 2, 3 which are permeable or of open-work structure. Hot air, supplied through hood 4, passes through the mat, is collected in hood 5, thence transferred to hood 6 whence it passes through the mat a second time and is taken up by exhaust hood 7. Further hot air, supplied through hood 8, passes through the mat, is collected in hood 9, thence transferred to hood 10 whence it passes through the mat a second time and is taken up by exhaust hood 11. The mat thus preheated passes into an agglomerating tunnel furnace 12 having electric resistance heating elements 13, 14. The mat is supported on rollers 15. The thickness of the mat diminishes rapidly from its entry into the furnace. On leaving the furnace the mat passes between calender rollers 16, 17, then between containers 18, 19 which cool it and finally between driven rollers 20, 21 which give the mat its movement during its journey through the furnace.
Patent GB-518697-A (GB)
Title: Manufacture of dichlorobutenes
IPC: C07C17/02
Filed: 1938-09-03
Abstract: 518,697. Dichlorobutenes. GROVES, W. W. (I.G. Farbenindustrie Akt.-Ges.). Sept. 3, 1938, No. 25825. [Class 2 (iii)] Dichlorobutenes are manufactured by causing gaseous chlorine to act upon gaseous butadiene. in the presence of a gaseous diluent which is inert with respect to chlorine and butadiene. Diluents mentioned are nitrogen, the noble gases, halogenated hydrocarbons and carbon dioxide. The reaction may be performed in a cooling device which may be charged partially or entirely with filling material, an inlet tube for the chlorine extending into this reaction chamber. The proportion of chlorine used is preferably 0.75-1.0 mol. per mol. of butadiene. In examples (1) chlorine enters at the upper end of the cooling tube 1 connected with a separating chamber 2 which is connected with a second cooler 3 ; this cooler is provided with a separating chamber 4 and a cock 5 for the waste gas ; a pump 6 causes the butadiene to circulate in the apparatus: chlorine is supplied from the container 7, nitrogen from the container 8 and butadiene from the container 9 ; 10, 11, 12 and 13 are devices for measuring the speed of the gases ; a mixture of 1:2-dichlorobutene-3, 1:4-dichlorobutene-2 and' chlorination products of higher boiling point is obtained ; and (2) as in (1) except that the diluent is difluorodichloromethane.
Patent GB-708854-A (GB)
Title: Improvements in or relating to arrangements for converting a regular into an intermittent movement
IPC: F16H27/04
Filed: 1951-11-05
Abstract: 708,854. Toothed gearing ; couplings. MIDGLEY, A. H. Oct. 21 1952 [Nov. 5, 1951], No. 25855/51. Classes 80 (1) and 80 (2) In order to obtain rapid intermittent movements of the star-wheel 6 of a Geneva mechanism the driving pin 11 is secured to a cam 4 which is driven from a gear 5 through a pin 4a on the cam engaging a corresponding pin 5a on the gear 5. A spring loaded arm 1 with a follower 2 engages the cam and is adapted to be lifted thereby as the pin 11 approaches engagement with the wheel 6. As the high point of the cam passes under the follower 2 it is pushed forward to over-run the driving gear '5 to give a rapid operative movement through an angle of about 45 degrees to the driving pin 11 of the Geneva mechanism. The pin 4a on the cam will be re-engaged by the driving pin 5a when the movement of the star-wheel 6 has been completed.
Patent GB-300362-A (GB)
Title: New liquid washer
IPC: C11D7/60
Filed: 1927-10-01
Abstract: 300,362. Bishop, C. H., and Jenkins, I. G. Oct, 1, 1927. Cleansing-compositions are prepared by boiling together 2 lb. of lime, 2 1b. of soda, 2 oz. of borax, and 2 gallons of water, settling, and filtering. ¥ pint of the clear liquid is added to a copper of boiling water.
Patent GB-368680-A (GB)
Title: Dry return shock safety device of assembled corrugated metal bodies for autogeous welding torches
IPC: A62C4/02
Filed: 1930-08-30
Abstract: 368,680. Gas mains &c. WOLF, O., Cologne, Germany. Aug. 30, 1930, No. 25946. Convention date, Aug. 30, 1929. Void [Published under Sect. 91 of the Acts]. [Class 54.] A device for preventing back-firing in autogenous welding apparatus consists of a pile of thin metal plates a corrugated on one or both surfaces and compressed by members e which may then be soldered or welded to side-pieces m and secured under high pressure by hoods k. A yielding or plastic plate f may be incorporated to allow for inequalities in height of the assembled plates a. The plates may be notched at one edge to facilitate correct assembly. The gas passages in the hoods k may be provided with sieves n to prevent dirt from entering the passages between the corrugations.
Patent GB-1471468-A (GB)
Title: Number set device
IPC: B41J7/48
Filed: 1974-06-11
Abstract: 1471468 Selective printing ADDRESSOGRAPH MULTIGRAPH CORP 11 June 1974 [26 June 1973] 25948/74 Heading B6F A set of print wheels 10 are positioned by means comprising a shaft 14 on which the wheels are journalled, a slip clutch 19 for each wheel, keyed to the shaft 14 and frictionally engaging the associated wheel, brake means 28 to lock each wheel in selected position, and an energy source, such as light source 44, each wheel being non-transmissive to the energy except for discrete areas in one-to-one correspondence with the characters on the wheels whereby control means 50 senses the positions of the wheels as they rotate.
Patent GB-1160424-A (GB)
Title: Improvements in Methods of Treating Fibrous Suspensions for Forming Aggregates, and Products Obtained thereby.
IPC: B01J2/10
Filed: 1966-06-10
Abstract: 1,160,424. Fibrous compositions. CENTRE TECHNIQUE DE L'INDUSTRIE DES PAPIERS CARTONS ET CELLULOSES. 10 June, 1966 [14 June, 1965], No. 26060/66. Addition to 1,109,895. Heading C3N. [Also in Division D1] The method of Specification 1,109,895 in which fibrous aggregates are formed by subjecting a suspension of the fibres in a liquid to a gentle rotational agitation causing the formation of eddies which result in fibres moving together into groups which cling to one another to form aggregates has the concentration by weight of the fibres in the liquid at the beginning of the treatment being lower than 15% and is modified or improved in at least one of the following ways: (a) by modifying the concentration of the fibres during the treatment, as by adding different fibres during the treatment, (b) by modifying the composition of the fibrous suspension during the treatment, (c) by the liquid being composed entirely of a polymerizable, condensable, or cross-linkable product, (d) by reactions between different elements constituting the aggregates being triggered by catalysis or irradiation in the liquid, after partial drainage, or after drying, (e) by adding an inflating agent to the suspension to form a foamed aggregate, (f) by dried aggregates being treated by polymerizable condensable or cross-linkable products in the vapour phase, or (g) by the fibrous concentration falling outside of the range of 1À5 to 3%. The fibres may be agitated in a rotating cylindrical tank inclined at 45 degrees to the vertical. To favour the formation of the aggregates a mineral or organic powder, crystals, natural or synthetic resin particles, sawdust, cork or bark particles, fibrous aggregates, or disintegrated cardboard pulp or paper may be added to the liquid. Mouldable aggregates may comprise equal weights of Kraft pulp fibres and polyvinyl chloride powder, or mechanical pulp fibres, birch fibres, and aluminium alginate precipitated from aluminium sulphate and sodium alginate, or beech fibres produced in methyl methacrylate, with polymerization of the monomer being effected after drainage of the excess liquid. Other fibres are asbestos, glass, rock, or metal; and natural, regenerated or synthetic fibres, which may be chemically modified. An aggregate may be formed having a core of paper-making fibres covered by coloured rayon fibres. The aggregate is then dried, impregnated with a transparent thermosetting resin and used to coat a surface. An underlay may be manufactured from aggregates formed from pulp fibres, disintegrated paper, sawdust and styrene-butadiene latex.
Patent GB-587700-A (GB)
Title: Improvements in linear-dimension gauges
IPC: G01B5/08
Filed: 1944-12-30
Abstract: 587,700. Linear - dimension gauges. HARDING, L. Dec. 30, 1944, No. 26177. [Class 106 (ii)] The invention comprises means for elongating the handle of an internal linear dimension gauge of the type wherein two tubes are slidingly telescoped one within the other, being normally extended by internal spring means and wherein the inner tube is formed with a groove co-operating with a rod housed in the handle which is advanced and pressed into the groove to lock the gauge by rotation of a screw on the end of the handle. Similar bores in a part 1 of the body of the gauge fixed to an outer tube 3 and in the righthand end of each handle piece 2, 2a are formed with internal threads 11, 12 of the same pitch, while the left-hand end of each handle piece 2, 2a and of a locking screw 9 are formed with external threads co-operating interchangeably with the internal threads. Thus, any desired number of handle pieces complete with internal rods 8 can be screwed together. When the locking screw is screwed on. the last handle piece, the series of rods 8 press a short rod 7 into a groove 6 in an inner tube 4 slidable in the outer tube 3 and so lock the gauge. When the locking screw is slackened, the two tubes are urged apart by a spring 5.
Patent GB-501121-A (GB)
Title: Improvements in piezo-electric crystals
IPC: H03H9/17
Filed: 1938-09-07
Abstract: 501,121. Piezo - electric crystals. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE. Sept. 7, 1938, No. 26183. Convention date, Sept. 13, 1937. [Class 40 (v)] In order to avoid the pro. duction of unwanted frequencies, a crystal adapted to vibrate in accordance with the thickness mode and wherein the transverse dimension is large compared with the thickness, has opposed faces which are dished, Fig. 1. When the crystal is rectangular, the faces are preferably parts of the two sheets of a hyperboloid and when circular, parts of a hyperboloid of revolution. The edges may be bevelled, Fig. 3, the edge between the two bevels being utilized as the location of clamping means. Specification 479,637 is referred to.
Patent GB-494928-A (GB)
Title: Method of deacidifying and drying of retted flax
IPC: D01C1/04
Filed: 1937-09-28
Abstract: 494,928. Drying retted flax. HAAS, H. Sept. 28, 1937, No. 26200. Convention date, Oct. 2, 1936. [Class 120 (i)] Wet flax stem bundles from the retting tank are subjected to a preliminary treatment with a hot fresh air current which partly evaporates the superfluous water and acids, such as formic, lactic acetic valeric and butyric acid, formed during the retting operation, and also warms the flax to such an extent that condensation of wet steam and acid does not occur thereon during the usual counter-current drying operation.
Patent GB-1075120-A (GB)
Title: Electronic switching device
IPC: H03K17/76
Filed: 1964-06-24
Abstract: 1,075,120. Diode switching circuits. CSFCOMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL. June 24, 1964 [July 4, 1963], No. 26201/64. Heading H3P. In a circuit for selectively connecting one of a plurality of high-frequency circuits to a common circuit, comprising a single shunt diode in each circuit, an impedance matching filter (preferably a # network) is included between each diode and the common circuit.
Patent GB-261351-A (GB)
Title: Improvements in or relating to the generation of electrical oscillations
IPC: H03B5/10
Filed: 1926-10-20
Abstract: 261,351. Esau, A. Nov. 10, 1925, [Convention date]. Drawings to Specification. Thermionic generators.-A short-wave orcillation generator constructed as described in Specification 261,350 is asymmetrically designed. Thus the condenser c, shown in the drawing accompanying that Specification, may be connected to the leads at points which are nearer to one of the valves than to the other. Oscillations of two frequencies are consequently generated, with the result that, when they are modulated simultane- .ously, fading of one frequency is compensated by persistence of 'the other. Alternatively, the asymmetry may be produced by using valves having different constants, and oscillating circuits may be arranged between the grids and filaments instead of, or in addition to, those described, or between the plates and filaments.
Patent GB-678345-A (GB)
Title: Improvements in the production of unsaturated halogenated hydrocarbons
IPC: C07C17/08
Filed: 1950-10-27
Abstract: Unsaturated halides are made by reacting acetylenic hydrocarbons with hydrogen halide in an aqueous solution in which cuprous halide forms 90 per cent or more of the halide salts present and in which the molecular ratio of cuprous halide to hydrogen halide is about 1 : 2. The cuprous halide is thus present as H2CuCl3, which is formed by mixing the constituents in the correct proportion; when using the constant boiling aqueous acid the cuprous halide solution has a S.G. of 1.4 at 70 DEG  C.  Preferred working conditions are 65-110 DEG C., especially 85-95 DEG  C., and 1-4 atmospheres.  The process may be carried out continuously, an example being given of the production of vinyl chloride from acetylene.  Methylacetylene, vinylacetylene, phenylacetylene, dimethylacetylene and hydrogen bromide are also specified as reactants.ALSO:Catalysts for the production of unsaturated halides from acetylenic hydrocarbons and hydrogen halide comprise solutions of the latter in which cuprous halide forms 90 per cent or more of the halide salts present and in which the molecular ratio of cuprous halide to hydrogen halide is about 1:2.  The cuprous halide is then present as 42CuCl3, which is formed by mixing the constituents in the correct proportion; when using the constant-boiling aqueous acid the cuprous halide solution has a S.G. of 1.4 at 70 DEG C.
Patent GB-349394-A (GB)
Title: Improved method of and means for running on knitted fabric and the fabric produced thereby
IPC: D04B1/00
Filed: 1930-09-03
Abstract: 349,394. Knitting. HEMPHILL CO., Central Falls, Rhode Island, U.S.A.- (Assignees of Lawson, R. H. ; Pawtucket, and Cloutier, A. N. ; Lonsdale, both in Rhode Island, U.S.A.) Sept. 3, 1930, No. 26283. Convention date, May 14. (Class 74 (ii).] Relates to means for and a method of starting to knit a fabric, especially hosiery, on a circular knitting machine, and the resulting fabric structure. The old stocking having dropped off, the needle cylinder is rotated with bare needles preferably four times. The needles are then divided and a yarn finger 11 controlling two yarns is moved into feeding position. The division may be effected when each alternate needle groove is provided with a jack 12, by moving in a jack cam 16. The butts on the jacks corresponding to the short-butted needles are long and vice-versa. At the commencement of running-on the jacks are elevated and the correspondingly elevated needles take both yarns while the needles not elevated take only the lower yarn B. These yarns A<1> B are carried by the same finger 11, which is moved into feeding position as the cam 16 is moved inward. The front stitch cam 39 is moved out of action so that no needles are raised thereby, while alternate needles are raised by the cam 16. The yarn B is fed at such a low pont that the needles not having jacks are nevertheless at a high enough level to take yarn therefrom. F.g. 7 shows the terminal structure made. In the first three courses, alternate or other needles raised by jacks thereunder take both yarns A<1>, B and cast off old loops while the remainder take one yarn and do not cast off. The yarn A is thus floated behind the jackless needles, which cast off in the next course, forming tuck stitches. The yarn A is then withdrawn, another yarn C being substituted if desired and knitting then proceeds as usual. Specification 20101/09, [Class 74 (ii), Knitting &c.], is referred to.
Patent GB-646720-A (GB)
Title: Headers for radio tubes
IPC: H01J5/24
Filed: 1947-09-29
Abstract: 646,720. Making electric discharge tubes. SYLVANIA ELECTRIC PRODUCTS, Inc. Sept. 29, 1947, No. 26322. Convention date, Sept. 28, 1946. [Class 39(ii)] [Also in Group XL(a)] A header for a midget valve comprises a glass disc 12 thick enough (e.g. 0.080 inch) to permit a good glass-to-metal seal for leads 18 and provided with a flange 14 thin enough to weld to a thin tube wall 20 (e.g. 0.012 inch thick). During assembly on an intermittently rotating table, the tube and its holder 25 are rotated whilst two tangential oxy-hydrogen fires heat the flange 14 and adjacent tube wall, neutral gas being forced into the tube at 22, Fig. 3, to bulge the top of the tube wall. At the next position of the rotating table, adjustable weights 46, 47 press graphite rollers 40, 41 against the tube as it rotates, thereby shaping the joint formed between the almost molten flange 14 and the tube wall. The header is preferably provided at 16 with an edge serving to locate the header on the top of the inverted tube.
Patent GB-717893-A (GB)
Title: Fiber-forming compositions
IPC: D01F6/18
Filed: 1952-10-20
Abstract: Fibre-forming compositions comprise 65 to 98 per cent. of a copolymer containing 35 to 70 per cent. of vinyl chloride and 30 to 65 per cent. of acrylonitrile blended with 2 to 35 per cent. of a polymer containing at least 85 per cent. of acrylonitrile, such as polyacrylonitrile and copolymers of acrylonitrile with vinyl esters of monocarboxylic acids having up to four carbon atoms, styrene, alpha-methylstyrene, alkyl acrylates, methacrylates, maleates and fumarates having up to four carbon atoms in the alkyl radical, methacrylonitrile, vinyl and vinylidene halides such as vinyl and vinylidene chlorides, vinyl pyridine, vinylmethylpyridine, and other vinyl, allyl, isopropenyl, and methallyl pyridines and N-heterocyclic compounds.  The blends are prepared by mixing the polymers in a mutual solvent such as N, N-dimethylformamide, N, N-dimethylacetamide, gammabutyrolactone, ethylene carbonate, tris (dimethylamido) phosphate, and a mixture of nitromethane and water.