baber/WOPTO huggingface dataset:
Patent GB-1411144-A (GB)
Title: Production of alphaolefin polymers
IPC: C08F4/00
Filed: 1973-01-15
Abstract: 1411144 Olefin polymerization catalysts MITSUBISHI PETROCHEMICAL CO Ltd 15 Jan 1973 [14 Jan 1972] 1984/73 Heading C3P α-Olefins are polymerized by contacting them with a catalyst system prepared by combining I, a solid prepared by milling TiCl 3  in the presence of at least one modifier selected from (a) halohydrocarbons including perhalogenated hydrocarbons, (b) halides of Se, Te, Sb, Cr, Au, Pb, V or Ge and (c) compounds of the formula where X is halogen, Y is H or an alkyl, aryl, aralkyl, alkaryl or alkoxy group and m is 0-4 but excluding SiH 4 ; II, an organo aluminium compound and III, acycloheptatriene compound. The olefin may be ethylene, propylene or butene or mixtures thereof. The TiCl 3  may be prepared by reduction of TiCl 4  with, e.g. H 2 , Ti or a silicon compound. The organo aluminium compound may be the product of reacting an aluminium hydride or organo compound with a diene. The polymerization may be carried out in bulk or in the presence of an solvent. Extensive lists of cycloheptatriene compounds are specified and claimed including tropones, tropolones, and tropylium salts. In the examples propylene is polymerized in the presence of polypropylene and in the presence or absence of hydrogen using a catalyst in which I is TiCl 3 , produced by reduction of TiCl 4  with Ti, which has been milled with TeCl 4 , SiCl 4 , CCl 4 , hexachlorocyclopentadiene, hexachlorobenzene, 1,5- dichloropentane or benzyl chloride, II is AlEt 3  or AlEt 2 Cl and III is tropylium tetrachloride aluminate, methyltropyl ether, tropyl chloropentene, tropyl chlorocyclopentene, N,N-dimethyl amino tropylidene, methoxyethyl tropylether, ditropyl or tropone or in comparative examples hexamethyl phosphortriamide. Reference has been directed by the Comptroller to Specification 1,336,319.
Patent GB-1148266-A (GB)
Title: Manufacture of polymer compositions
Inventor: LOOKER EDWARD GIBSON
IPC: C08F2/18
Filed: 1967-01-13
Abstract: 1,148,266. Polymer composition. IMPERIAL CHEMICAL INDUSTRIES Ltd. 22 Dec., 1967 [13 Jan., 1967], No. 1988/67. Addition to 1,078,173. Heading C3P. Polymeric compositions are prepared by a process wherein a monomeric material comprising at least one ethylenically unsaturated monomer is polymerized in an aqueous medium using a free radical forming catalyst wherein a dispersion of a solid additive in an aqueous solution of a water soluble salt of an organic acid is added to the aqueous medium before or during polymerization, the process being characterized in that a water soluble metal salt, which reacts with the salt of the organic acid to form a water insoluble salt of the metal and the organic acid, is added to the aqueous medium after addition of the dispersion, after charging the monomer and while unreacted monomer is present and prior to the separation of the polymeric material. The dispersion may be of one or more pigments and 0À001-10% by weight of this additive, based on the weight of monomeric material, may be used. The preferred water soluble salt of an organic acid is a salt of an aliphatic carboxylic acid containing 6-22 carbon atoms, such as potassium or sodium stearate, and may be present in amounts of 0À2 to 40% by weight, based on the weight of additive. The dispersion preferably contains 10-60% by weight of the additive. Suitable water soluble metal salts are those of lead, calcium, barium, lithium or aluminium. The monomeric material is preferably vinyl chloride. In the examples vinyl chloride is polymerized, and the following dispersions and metal salts are used: (1) titania in aqueous potassium stearate, potassium oleate, sodium benzoate or sodium dodecyl benzene sulphonate, followed by addition of solutions of calcium, barium, lithium or aluminium chloride, (2) carbon black in potassium tallate, and carbon black in potassium stearate, treated with calcium chloride solution, (3) a blue pigment in potassium stearate, followed by addition of calcium chloride.
Patent GB-894103-A (GB)
Title: Apparatus and process for the manufacture of paper
IPC: D21F1/52
Filed: 1961-01-18
Abstract: 894,103. Suction-boxes of paper-making machines. CARBORUNDUM CO. Jan. 18, 1961 [Jan. 20, 1960], No. 2026/61. Class 96. A suction-box 21 of a Fourdrinier paper-making machine has a cover 20 wholly, or with its upper portion only, of hard, dense ceramic material, e.g. of selfbonded or silicon nitride - bonded silicon carbide, chromiumbonded alumina, metal-bonded titanium- or tungsten-carbide, zirconium diboride impregnated with molybdenum disilicide, or titanium-, boron-, tungsten-, or zirconium-carbide, or titanium-, or zirconium-boride, or titanium nitride, zirconia, or alumina. The cover may be held in place by a fixed clamp 35 and a removable clamp 36.
Patent GB-713273-A (GB)
Title: A process for separating constituents of gaseous mixtures by adsorption
Inventor: ETHERINGTON LEWIS DODSON
IPC: B01D53/12
Filed: 1952-01-24
Abstract: <PICT:0713273/III/1> In a process for the separation of the constituents of a gaseous mixture by countercurrently contacting the mixture with a solid adsorbent in an adsorption zone and then passing the adsorbent successively through a rectification zone and a desorption zone, heat is removed from one or more regions of the adsorption zone, and the desorbed adsorbent is cooled before reintroduction into the adsorption zone.  As shown, the gas mixture is introduced at 4, cooling coils 24, 25 are provided in the adsorption zone, and the adsorbent from the desorption zone is cooled at 14.  A cooling coil may also be provided in the rectification zone near the gas inlet (Fig. 2, not shown).  In place of cooling by means of coils 24, 25, adsorbent may be withdrawn from the adsorption zone, cooled by contacting with the feed gas in a separate zone, and returned to the adsorption zone (Fig. 3, not shown).  The process is described with reference to the fractionation under pressure of refinery fuel gas containing methane, C2, C3, and heavier hydrocarbons, and nitrogen and hydrogen, using activated charcoal as adsorbent.  Methane, nitrogen and hydrogen leave the tower at 20, C2 hydrocarbons at 8, and C3 and higher hydrocarbons at 9.  Desorption is effected in zone 10 by indirect heating and the action of steam. The cooler 14 may be situated at the top of the tower, and a zone for removal of steam by stripping with tail gas may be provided at the top or bottom of the tower. Cooling in the adsorption zone may also be effected by means of vertical tubes extending the total length of the zone.  The adsorbent may gravitate down the tower as a compact bed or may be in the fluidized condition. perforated plates and overflow means being provided.  The process may also be used for the separation of paraffins, naphthenes, olefins, diolefines and aromatics using silica gel as adsorbent, the treatment of catalytic cracking gases or hydrocarbon synthesis gas, the separation of methane from nitrogen, the recovery of acetylene from gases of the Wulff process, and the recovery of benzene from gases.  Specification 650,095 is referred to.
Patent GB-1091801-A (GB)
Title: Cardboard boxes
Inventor: NIELD LESLIE CAMDEN
IPC: B65D5/20
Filed: 1964-01-17
Abstract: 1,091,801. Packages. JOSEPH CHADWICK & SONS Ltd. Jan. 7, 1965 [Jan. 17, 1964], No. 2093/64. Heading B8C. A carton is formed about an article by placing the article on a creased rectangular or cruciform blank at least parts of which are intended to fold up against the article sides. These parts are coated externally with self-sealing adhesive and folded up round the article. A similar blank having internally coated portions is placed on the article and these coated portions are pressed into contact with the first blank to seal the package. The adhesive may extend over an entire blank surface so that similarly coated labels may be secured to the bottom of the package. The adhesive may be latex with 30% to 60% of water added.
Patent GB-853883-A (GB)
Title: Improvements in or relating to a process for manufacturing wire-type contact spring assemblies for use in multi-contact electro-magnetic relays
Inventor: LENEY ERIC NORMAN
IPC: H01H50/56
Filed: 1958-01-22
Abstract: 853,883. Contact-members for switches. AUTOMATIC TELEPHONE & ELECTRIC CO. Ltd. Feb. 5, 1959 [Jan. 22, 1958], No. 2118/58. Class 38 (5). A comb-like wire-type contact-spring assembly comprises an insulating thermo-setting plastic block slotted to receive the springs which are secured in the slots by a moulding- operation with a thermoplastic material, preferably nylon. The block 10 is moulded with ribs 12, 13 so as to form the slots which are narrower between the ribs 13 than between the ribs 12. A transverse channel 15 interconnects and allows the thermoplastic material to flow freely during moulding. The contact-springs 18 are formed from wire bent to the shape shown in Fig. 3 and arranged so that the bent ends fit in the narrower part of the slots and the spaced parallel limbs lie on each side of projections 14 in the slots. A recess 17 in the block 10 interlocks with a block 21 carrying contact-springs 22 which co-operate with the springs 18. A member 23 of plastic material is moulded about the springs 22 and grooved to receive the springs 18, the springs being tensioned downwards so that member 23 abuts the frame carrying the spring assemblies.
Patent GB-417295-A (GB)
Title: Improvements in firebars, furnace grate links, and the like
IPC: F23H17/12
Filed: 1934-01-22
Abstract: 417,295. Firebars. TIMMIS, A. E., 19, Lymington Road, Hampstead, London. Jan. 22, 1934, No. 2167. [Class 51 (i).] A firebar of T- section is formed on its centre rib R with curved vanelike projections V having their concave faces uppermost so as to collect the incoming air and deliver it upwardly between the bar tops. The vanes on adjacent bars either abut, in the case of fixed bars, or have just a minimum clearance, in the case of travelling-grate bars, so as to provide unbroken air guides. The application to bars with tops of various designs is described.
Patent GB-764236-A (GB)
Title: Improvements in and relating to grizzlies and screens for grading materials
IPC: B07B1/14
Filed: 1955-01-25
Abstract: 764,236. Screening apparatus. ROSS, W. Jan. 25, 1955, No. 2172/55. Class 117 In screens of the kind comprising travelling screening bars 1, 2 extending transversely of their direction of travel and connected with endless conveyer means, the bars are supported by a floating frame 9, 10 which extends outwardly beyond the ends of the bars and is resiliently supported on the main frame of the screen. The bars are connected to spaced chains 3 passing over pairs of sprockets 4, 5 and the bars 2 fall away from the main bars 1 as they leaves the screening zone. The resiliently mounted frame comprises transverse bears 9 rigid with longitudinal rails 10, and the beams terminate in spring housings 13 each containing two helical springs 14 which bear on the main beams 15 of the screen. Alternatively each housing may contain one, or three or more springs. Instead of helical springs, leaf springs or dampers using air, water &c. may be used. Specification 555,350 is referred to.
Patent GB-1456097-A (GB)
Title: Process for the preparation of phosphinic acid esters
IPC: C07F9/32
Filed: 1974-01-17
Abstract: 1456097 Preparing ethane 1,2-diphosphinic acid diesters HOECHST AG 17 Jan 1974 [19 Jan 1973 19 March 1973] 2188/74 Heading C2P A phosphinic acid diester of the Formula (I) wherein R 1  is an alkyl, alkylphenyl or phenylalkyl group having up to 18 carbon atoms or is a phenyl or naphthyl group and R 2  is a C 1 -C 18  alkyl or -haloalkyl group is obtained by reacting a phosphonous acid ester of the formula (R 1 )(R 2 O)P(O)H, or a mixture of two or more of such esters, with acetylene in the presence of a catalytic amount of a free radical-forming agent and/or with U.V. irradiation, or with high energy irradiation. The process may be carried out in the presence of an inert solvent and is preferably effected in the presence of an inert gas, e.g. argon, nitrogen or CO 2 . Several free radical-forming agents suitable for use are specified, those used in the examples given being di-tert.-butyl peroxide, azo-bis-isobutyronitrile, tert. - butyl peroxypivalate and tert. - butyl peroxybenzoate. Examples are also given in which U.V. irradiation and cobalt-60-gamma irradiation respectively are used. Other specified examples of high energy irradiation are X-rays, accelerated electrons and nuclear rays from a nuclear reactor. The process may be carried out in a continuous manner. The diester products may be converted to the corresponding ethane-1,2-diphosphinic acids or salts thereof in conventional manner, e.g. by hydrolysis, saponification or acid splitting, and a detailed example is given for the production of ethane-1,2-di- (methylphosphinic acid) by heating the corresponding diisobutyl ester with dry hydrogen chloride at 160‹ C. The diesters are useful as extraction agents for metal salts from acidic solutions, and as plasticizers and the phosphinic acids are useful as flame-retardants in the production of various polymers.
Patent GB-1491542-A (GB)
Title: Fuel element for a nuclear reactor
IPC: G21C3/328
Filed: 1975-01-17
Abstract: 1491542 Fuel elements INTERATOM INTERNATIONALE ATOMREAKTORBAU GmbH 17 Jan 1975 [19 Jan 1974] 2226/75 Heading G6C A fuel element for a sodium-cooled fast breeder reactor comprises a casing 1 and a spacer (not shown) within the casing 1 for spacing a cluster of fuel rods 2, in such manner that the minimum spacing between any one of the fuel rods in the outermost layer and an adjacent fuel rod in the adjacent layer is greater than the minimum spacing between said adjacent fuel rod and an adjacent fuel rod in the next innermost layer. Typical spacing distances measured in millimetres are indicated in the figure. A gap must be provided between the spacer and the internal casing wall to allow for fuel swelling, differential expansion of the spacer relative to the casing, and manufacturing tolerances both with the above-described fuel element and one having constant rod spacing. In the case of the former, however, with realistic eccentric positions of the fuel rods resulting from the spacer gap, the hottest coolant flow is in the interior of the fuel rod cluster while with extreme eccentric positions, although the hottest coolant flow is at the edge of the cluster, its temperature is only a few degrees higher than that of the hottest coolant flow in the interior of the cluster. In all the eccentric positions, there is a smaller maximum temperature difference at the periphery of each fuel rod in the cluster than with a cluster of constant rod spacing.
Patent GB-545483-A (GB)
Title: Means whereby insulating or other boards may be attached to t-section rails and likesupports
IPC: E04B9/24
Filed: 1941-02-18
Abstract: 545,483. Clips. INKLEY, B. Feb. 18, 1941, No. 2230. [Class 44] [Also in Group X] Wall boards B rest on the flanges 4 of a T-section rail A and are clamped by a screw 7 which passes into the web 2 and is threaded through a plate 3 extending through a slot in the web. The screw is anchored by a reduced extension 6 which passes through the web and is expanded so as to allow rotation but not withdrawal: Alternatively, the screw may be anchored by providing it with a nut located in a second aperture in the web, Fig. 2 (not shown). In another alternative, Figs. 4-7 (not shown), the walls of the web may be closed together, except where the screw passes between them. In another modification, Figs. 8, 9 (not shown), the screw is not anchored, but the slot is extended at right angles in the web to receive the plate 3 before placing the boards in position. In Fig. 11 the plate 13 is resilient and is provided with a conical nut 15 in a recess.
Patent GB-1484460-A (GB)
Title: Cutting board
IPC: A47J47/00
Filed: 1974-10-21
Abstract: 1484460 Food cutting boards FORMULA HOUSING RESEARCH Ltd 21 Oct 1974 [17 Jan 1974] 02258/74 Heading A4C A food cutting, chopping and slicing board 1 has opposed surfaces formed with connecting frustoconical recesses, nuts 6 being located in the recesses made in one surface and flush with that surface for locating either feet 3 or plugs Fig. 4 (not shown) which occupy the recesses in the other surface. The nuts connect with the feet or plugs by bolts 5 embedded within the latter. Channels 7 of angular or curved section may be formed in either or both surfaces and a protecting cover 8 snap fits into an edge recess 9 or apex Fig. 2 (not shown), the cover being used to support hot dishes. A pouring lip may extend from the channel(s) and the components of the board be made from moulded plastics.
Patent GB-925257-A (GB)
Title: Improvements in and relating to electric switch contacts
IPC: H01H15/06
Filed: 1961-01-19
Abstract: 925,257. Switch contacts ; snap-action switches. UNITED INTERNATIONAL DYNAMICS CORPORATION. Jan. 19, 1961 [Jan. 22,1 960], No. 2283/61. Class 38 (5). A slidable contact comprises a resilient strip having a pair of opposed ends forming arcs 25, 26 separated by a central portion 27, the arcs extending through more than 180 degrees and the end portions 31, 32 extending towards each other and being inclined away from the central portion. As shown, the latter has a projection 28 which in sliding rides over a central contact 13 of three fixed contacts 11, 12, 13 to provide a snap-action. The slidable contact may be operated by a sliding member 21, as shown, or by a pivoted member, in which case the dolly may carry the contact (Fig. 11, not shown), or may act on a member similar to sliding member 21 (Fig. 12, not shown).
Patent GB-1342605-A (GB)
Title: Production of silicon
IPC: C01B33/02
Filed: 1971-01-18
Abstract: 1342605 Silicon UNION CARBIDE CORP 18 Jan 1971 [19 Oct 1970] 2310/71 Heading C1A Silicon is produced by reducing with hydrogen a mixture of trichlorosilane and 1-80% (molar) dichlorosilane in a reactor containing a hot decomposition surface at 900-1250‹ C., wherein the total dichlorosilane plus trichlorosilane is not more than 30% of the moles of gas fed to the reactor.
Patent GB-469424-A (GB)
Title: Improvements in or relating to the manufacture of nitrocellulose
IPC: C08B5/02
Filed: 1936-01-24
Abstract: Sheets of cellulose pulp having a thickness of two to eight hundredths of an inch and a compactness of 50--115 are subdivided and the chips so produced are treated at a temperature not substantially less than 40 DEG  C. with a nitrating acid composition containing 50--75 per cent of nitric acid.  The compactness is the ratio of the weight in pounds of 415,000 sq. ins. of the sheet to 100 times the thickness of the sheet in inches.  Preferably, the sheets are of thickness 0,03--0,035 inches and of compactness 60--80, they are cut into chips one-eighth to one-sixteenth inch square, and the chips are nitrated with a mixture of sulphuric acid and water with 60 per cent of nitric acid at a temperature of 40--50 DEG  C., the amount of mixed acid being 10 times the dry weight of cellulose.  In an example, chips obtained by cutting purified wood cellulose sheets are dried to 1 per cent moisture content and treated with a nitrating mixture containing 60 per cent of nitric acid in a mechanical type of dipper pot.  The charge is then dropped into a centrifuge and excess acid wrung out.  The product is drowned in water, stabilized by heating in acid water, and then washed.  In another example chips are cut from cellulose sheets having a compactness of 110.  The nitrocellulose obtained by the process may be used in the production of lacquers for metal or wood, leather dopes, and camphor-alcohol plastics. Specification 336,235, [Class 2 (ii)], is referred to.
Patent GB-1498908-A (GB)
Title: Presser foot construction for sewing machines
IPC: B22F5/00
Filed: 1976-01-22
Abstract: 1498908 Sewing machines YOSHIDA KOGYO KK 22 Jan 1976 [28 Jan 1975] 02462/76 Heading D1G A sewing machine presser foot comprises a sole portion 11 having integrally formed therewith or attached thereto a guard 21 to prevent fingers or fabric from passing between the needle and foot, the top of the guard lying between the bottom of the needle eye and a position slightly below the needle point in the highest position of the needle, the presser foot having a needle aperture 13, 22 and at least the guard being formed of substantially transparent material. In Fig. 1 the whole foot is integrally moulded from transparent plastics or toughened glass. Suitable plastics are polycarbonate, acrylic resin and polystyrene. Alternatively only the guard may be transparent, the sole portion and mounting stem 17 being of opaque material, e.g. metal. The sole portion 11 may have two parallel guide channels for use in sewing on sliding clasp fasteners.
Patent GB-123166-A (GB)
Title: Improvements in Loose Socks for Boots and Shoes.
Inventor: ABRAHAM SOLOMON
IPC: A43B17/10
Filed: 1918-02-15
Abstract: 123,166. Abraham, S. Feb. 15, 1918. Drawings to Specification. Socks.-A loose sock comprises a layer of paper, cardboard, powdered cork, sawdust, or textile fabric, or of a mixture of cork and sawdust, covered with layers of waterproof .fabric, the rubberproofed face of which is on the inside or outside according as to whether the socks are to be used by persons with cold or hot feet. Both faces of the waterproof fabric are coated with a solution consisting of coal-tar naphtha, masticated para rubber, boracic acid powder, pulverized alum, and spirit dye to serve as a medicament and as an adhesive between the intermediate and outer layers. The Provisional Specification states that the middle layer may be formed with an aperture for the reception of the ball of the big toe.
Patent GB-126718-A (GB)
Title: Improvements in or relating to Wheels for Vehicles particularly Aeroplanes.
IPC: B60B25/04
Filed: 1917-02-24
Abstract: 126,718. Dunlop Rubber Co., and Keegan, F. J. Feb. 24, 1917. Wheels with non-supporting casings enclosing spokes. - Wind-shields H of canvas or other flexible material secured outside the spokes &c. B, particularly for use on aeroplane wheels, are fitted with endless wires J or other resilient rings adapted to be sprung behind flanges G formed on or secured to the rim. The central opening in the shield may be stiffened by a wire ring. The rim shown is of the kind described in Specification 125,120, [Class 144 (ii), Wheel tyres, Pneumatic &c.]. Reference has been directed by the Comptroller to Specification 108,705.
Patent GB-144341-A (GB)
Title: Improvements in heel-shaped indiarubber heels for boots and shoes and like wearing apparel
IPC: A43C13/02
Filed: 1919-02-05
Abstract: 144,341. Paget, H. P. Feb. 5, 1919. Protectors, construction of.-Heel pads are made with a raised portion c, Fig. 2, to fit worn heels or with a portion f, Fig. 4, which, owing to a groove e, can readily be adapted for the same purpose.
Patent GB-412662-A (GB)
Title: Improvements in golf clubs
IPC: A63B53/02
Filed: 1933-01-30
Abstract: 412,662. Golf clubs. FORGAN & SON, Ltd., R., and FORGAN, P. L., The Links, St. Andrew's, Fifeshire. Jan. 30, 1933, No. 2805. [Class 132 (ii).] The steel shaft 9 of a wooden headed golf club has rigidly secured thereto an externally tapered celluloid or like sleeve 10 internally shaped snugly to engage over a reduced portion 7 of the socket 4 and abut against a shoulder 6 when the shaft is inserted in the head. The portion 7 may be cylindrical or tapered, and is preferably screw-threaded at 8, the sleeve 10 being screwed thereon. Adhesive is applied to the portion 7 to bind the joint.
Patent GB-233056-A (GB)
Title: Improvements in means for making and repairing roads and like surfaces
IPC: E01C23/14
Filed: 1924-02-04
Abstract: 233,056. Hines, J. Feb. 4, 1924. Surface-heating apparatus; cauldrons. - In vehicular apparatus for heating road surfaces and applying tar thereto, hot gases from a furnace l are supplied to a hood q arranged directly below the tar tank h through a flue p of large cross section passing vertically through the tar tank. A current of air is forced through the furnace by a fan e and a damper n permits of adjusting the proportions of air admitted above and below the grate k. The tar-distributing pipe s passes into the rear end of the hood.