baber/WOPTO huggingface dataset:
Patent GB-1286071-A (GB)
Title: Modified ammonium polyphosphates
Inventor: SMITH RAYMOND ANTHONY
IPC: C09D5/18
Filed: 1968-09-04
Abstract: 1286071 Modified ammonium polyphosphates ALBRIGHT & WILSON Ltd 22 Sept 1969 [4 Sept 1968] 42066/68 Heading C1A Ammonium polyphosphate is modified by the inclusion in the chains of non-phosphatic units derived from oxyanions of boron or sulphur, or from phosphite, sulphamate or organophosphonate anions in a proportion of phosphatic : non- phosphatic units of from 1 : 1 to 100 : 1. The ammonium polyphosphate preferably contains from 40 to 70% by weight of P 2 O 5  and has an atomic ratio of nitrogen to phosphorus of from 1À3 : 1 to 2À5 : 1, preferably 1À6 : 1 to 2À0 : 1. The ammonium polyphosphate preferably contains minor molar proportions of alkali metal and/or alkaline earth metal cations and the non- phosphatic units are preferably derived from sulphate, sulphite, borate or phosphate. The modified polyphosphate has the general formula where M is Na, K or Ca, X is -[-SO 3 -]-, -[-SO 2 -]- or -[-HPO 2 -]-, v is the valency of M and h, m, n, p, q, b, x and y are all numbers from 0 to 20 such that p>2, p>q, (h+m+n)= (p+q+b+2), n>m, (p+q)/(b+x) is from 1 to 20, and m+n>h, and may also contain minor proportions of NH 4 OH, M(OH) v , ring phosphates having a formula as specified above with (h+m+n+2r)=(p+q+b+2) where r is the number of complete rings per molecule, borates, sulphates, orthophosphates and/or pyrophosphates. The modified polyphosphate is prepared by mixing (A) thiourea or preferably urea; (B) phosphoric or polyphosphoric acid containing up to 85% P 2 O 5  or a suspension of P 2 O 5  in polyphosphoric acid or an acid phosphate; (c) boric acid, boric oxide, a borate, a perborate, a pyroborate, sulphuric acid, a sulphate, a sulphite, phosphorous acid, a phosphite, a thiophosphite, sulphamic acid, a sulphamate and/or an organo-phosphonic acid or salt thereof; and optionally (D) an alkali metal and/or alkaline earth metal oxide and/or hydroxide and heating the mixture until a self-sustaining exothermic reaction commences. The reaction mixture is preferably allowed to foam out of the reaction vessel on to or into a collecting floor or vessel. The modified ammonium polyphosphates may be used as sequestrants, threshold agents, dispersants, corrosion retarders, fertilizers or fire retardants.
Patent GB-1069368-A (GB)
Title: Production of pyridine and picolines
Inventor: HALL ANTONY HAROLD PATRICK
IPC: C07D213/09
Filed: 1964-10-15
Abstract: The catalytic production at elevated temperatures of pyridine and picolines from a gaseous mixture comprising acrolein, acetaldehyde and ammonia is conducted in the presence of molecular oxygen.  Steam may be included in the reaction mixture and at least part of the acetaldehyde may be replaced by paraldehyde. Specified catalysts are dehydration and/or cracking catalysts which may further comprise oxides and/or salts of metals and/or ammonia.
Patent GB-1324734-A (GB)
Title: Mountings for open-end or break-spinning machines
IPC: D01H4/12
Filed: 1971-09-09
Abstract: 1324734 Break spinning, spindle drive and brake WILHELM STAHLECKER GmbH 9 Sept 1971 [28 Sept 1970] 42154/71 Heading DID A break spinning rotor shaft I is guided in the cusp between pairs of rollers 4, has an axial thrust bearing at one end and is driven by radially adjustable driving means (belt 3). The rotor is braked by a brake 27 pressing radially against the rotor shaft. As shown, the driving belt 3 is adjusted radially by a pressing roller 19 mounted on a pivoted arm 20. The arm 20 operates the brake upon disengagement of the driving belt. Axial thrust of the shaft I on its end bearing can be produced by tilting the shaft or driving belt, a fan on the shaft, an air cushion device, magnets or by arranging the shaft vertically. Lubrication of the axial thrust bearing can be achieved by periodically reciprocating it through an oil reservoir or by spraying it with oil, Figs. 4 and 7 not shown. The brake 27 may act on tapered sections of the shaft I to press the shaft against the axial thrust bearing. The shaft 1 can be driven by a belt-driven roller (45), Fig. 6 not shown.
Patent GB-1462056-A (GB)
Title: Process and apparatus for chemical reactions in the presence  of electric discharge
IPC: C22B34/12
Filed: 1973-09-07
Abstract: 1462056 Fluidized bed; treating gases with electrical discharge ELECTRICITY COUNCIL 4 Sept 1974 [7 Sept 1973] 42222/73 Heading H5H [Also in Divisions C6-C7] Chemical reactions are effected at atmospheric pressure by an electric discharge analogous to glow discharge produced in a fluidized bed of particles 11, some of which are non-conducting, the others of which are either of electrically conducting material or have a surface of electrically conducting material, by applying a potential between electrodes 19, 20 across at least a region of the bed, the reactants being introduced into the bed as a gas (e.g. as the fluidizing medium) and/or otherwise (e.g. as a readily vaporized liquid). Fluidized bed 11 has a porous plastics base 13, and a plastics lid 21 with glass lined passages 22 and which supports electrodes 19, 20. Electrodes 19, 20 are arranged, six in an inner ring, twelve in an outer concentric ring such that the distance between adjacent electrodes in each ring is the same and such that each electrode 19 in the inner ring has two electrodes 20 in the outer ring at approximately this same distance. In use each electrode of such a group of three is connected to a different phase of a three-phase supply (4À4 kv.). The bed particles are glass spheres, some coated with copper or silver and of two sizes with ratio of their radii 0À443 : 1 so that in use they tend to form an orthorhombic structure. The conductive particles may be of pure titanium. In preparing pure titanium, titanium tetrachloride liquid is fed to the top of bed 11 from reservoir 16 via valve 17, flow meter 18 and passages 22. Hydrogen is fed in below the bed as the fluidizing medium. Hydrogen leaving the bed is cycled through heat exchangers 28, 29 to condense out titanium tetrachloride vapour, through cold (-18‹ C.) salt water baths 30 to remove hydrogen chloride, over hot wire 36 to scavenge oxygen, pump 38, dryer 39, flow meter 40 back to reactor 10, where the hydrogen is heated by heater 14 to 60‹ C. before re-entering the bed. Topping up hydrogen and initial flushing hydrogen come from reservoir 33. The pressure in the system is maintained by device 41, 42 at more than 55 inches of water above atmospheric.
Patent GB-1221208-A (GB)
Title: Dryer
Inventor: SCHUURINK FREDRIK ADOLF
IPC: D06F58/02
Filed: 1968-09-05
Abstract: 1,221,208. Rotary drum driers. F. A. SCHUURINK. 5 Sept., 1968 [8 Sept., 1967], No. 42272/68. Heading F4G. In a laundry drum drier comprising a drum 1 rotatable about a horizontal (or vertical) axis and positioned in a stationary casing 10 and a fan 5 in an enclosure 6, the fan blows air received from the atmosphere through opening 13 and heated by heaters 16, through apertured wall 4, the drum 1 and out of the drum through apertures 7 into a conduit defined by the casing and drum, part of the air in the conduit then being exhausted through outlet 14 and part being returned via annular orifice 12 to the enclosure 6 where it mixes with fresh incoming heated air and is returned to the drum 1.
Patent GB-1083744-A (GB)
Title: Improvements in or relating to communications encoding and decoding systems and methods
IPC: H04N7/171
Filed: 1964-10-16
Abstract: 1,083,744. Secret television systems. L. R. KAHN. Oct. 16, 1964 [Oct. 18, 1963], No. 42309/64. Headings H4F and H4R. A television signal is coded for secrecy purposes by subjecting selected frequency components of the signal to predetermined arbitrary phase and amplitude changes whereby the signal is only usable to produce a comprehensible picture by a receiver arranged so as to impart inverse changes to restore the signal to its original form. The selected frequency components comprise narrow bands, e.g. 500 c/s., centred on the first few, e.g. three to ten, harmonics of horizontal synchronizing frequency. Brief mention is also made to a similar arrangement based on vertical synchronizing frequency. The selected frequency components pass through individual phase shifters and attenuators to an amplifier and are then recombined with the original signal which is also controlled in phase, Fig. 1 (not shown). The phase and amplitude changes applied at a receiver, Fig. 2 (not shown), must be the inverse of those applied at the transmitter and suitable means for achieving this based on the use of punched cards or cards bearing printed circuits are briefly described. A suitable detailed circuit for use in a receiver is described, Fig. 3 (not shown), in which phase and amplitude changes are imparted by mistuning parallel resonant circuits either side of resonance. Additional amplitude changes are introduced by adjustable resistors in series with the resonant circuits. The inductors of the resonant circuits comprises the primaries of transformers with centretapped secondaries. By selecting appropriately the transformer output terminals farther phase shifts of 180 degrees may be introduced.
Patent GB-1489912-A (GB)
Title: Sealing of roofs with synthetic plastics sheet materials
IPC: E04D5/10
Filed: 1974-09-30
Abstract: 1489912 Coated flame-retardant roof covering DYNAMIT NOBEL AG 30 Sept 1974 [3 Oct 1973] 42403/74 Heading B2E [Also in Division B5] Ungravelled roofs are simultaneously sealed and made flame-retardant by providing thereon a flexible multi-layer sheet comprising a flame-retardant layer, e.g. felts, fleeces or thin boards of asbestos or glass fibre, covered and intimately contacted on both sides by co-extensive elastically-deformable layers or coatings of unfoamed synthetic thermoplastic material, e.g. soft pvc. The plastics layers may be joined at their edges to enclose the flame-retardant layer, or exposed edges of the latter may be sealed by coatings or strips. The plastics layers may be of different thickness, chemical constitution, colour or profile and may be applied by extrusion, or by coating with gellable paste. The roof may be a single-layer thermally insulating roof. Two multi-layer sheets may be joined along an overlapping seam by solvent, thermal or adhesive bonding.
Patent GB-1011613-A (GB)
Title: Improvements in and relating to multiple-ring check valves
IPC: F16K15/10
Filed: 1963-10-29
Abstract: 1,011,613. Valves. HOERBIGER VENTILWERKE A.G. Oct. 29, 1963 [Nov. 10, 1962], No. 42584/63. Heading F2V. A compressor valve has the seat 1, Fig. 1, spaced from the guard 2 by a washer 5 which also serves to guide a valve plate 6 and a spring plate 7. The valve plate 6 comprises four concentric rings 8, Fig. 2, interconnected by two, or as shown four, radial webs 9; one web is provided with an oblong hole 10 for a pin that secures the two plates 6, 7 against rotation. The spring plate 7, Fig. 3, also incorporates four rings 11 joined by two webs 12 on a common diameter; when assembled as shown in Fig. 1, the plate 7 contacts the plate 6 only in the region of the webs 12 so that as the plate 6 is lifted from the seat 1 it adapts itself to the contour of the plate 7. In other forms, the spring plate may have one radial web only or the two radial webs may be discontinuous. The rigidity of the spring plates may be altered by radial slots. The armature of the plates may be reversed and a number of such plates may be employed; the webs of the two plates may be variously disposed. The valve and spring plates may be of the same thickness.
Patent GB-1326306-A (GB)
Title: Fuel injector
IPC: F02M61/12
Filed: 1971-09-13
Abstract: 1326306 Fuel injection valves STANADYNE Inc 13 Sept 1971 [11 Sept 1970] 42596/71 Heading F1B Fuel injection valve comprises a body 10 having a bore 14 in which is a valve 16, the conical tip of which co-operates with a valve seat 18. Fuel under high-pressure is admitted through a port 24 and lifts the valve off its seat against the pressure of a spring 26. A port 16a of the valve is guided in a bush 20 screwed into the body, and has two axially-spaced-apart V-section grooves 50 and 52. The grooves may be 100 mils apart and 5-15 mils deep and allow fuel to flow around the valve, thus centralizing it in the bush and reducing friction so that the valve can reciprocate rapidly during injection, as is necessary in order to produce a finely atomized spray. The chamber containing the spring 26 has a vent 42 for fuel which escapes through the bush.
Patent GB-1049685-A (GB)
Title: Improvements in or relating to apparatus for dispersing suspensions of solid particles to colloidal fineness
IPC: B02C17/16
Filed: 1964-10-19
Abstract: 1,049,685. Wet grinding apparatus. J. KASPER, V. BICIK, J. SOUDEK and S. POKORNY. Oct. 19, 1964 [Oct. 19, 1963], No. 42603/64. Heading B2A. Wet grinding ball mill apparatus, for dispersing suspensions to colloidal fineness, comprises a cylindrical vessel 1 having end covers 2, 11, an input neck 4 for a suspension to be milled, and an impeller shaft 9 sealed by a box 3, in which the axis of the vessel 1 and the shaft 9 is horizontal or inclined up to 40 degrees to the horizontal. The vessel also includes a wide neck 5 into which a box 6 with a screen 7 and a dispersion discharge pipe 8 may be inserted, and stirring discs 10 secured to the shaft. In a modification, fixed flat or dished discs may be placed between the discs 10. Stirring arms may be used in place of the discs.
Patent GB-1089900-A (GB)
Title: Improvements in sealing means for fluid valves
Inventor: VARGA OTTO HERMAN
IPC: F16K1/46
Filed: 1965-10-08
Abstract: 1,089,900. Valves. SEETRU Ltd. Sept. 30, 1966 [Oct. 8, 1965], No. 42733/65. Heading F2V. The valve member 13, 16 co-operates with a seat 12 on the downstream side of a port 11. Part 13 has a face 14 which engages the seat. The diaphragm shaped resilient sealing element 16 fits in a recess 19 in the part 13. This sealing element has an integral D-shaped beaded rim 18. The depth 5 of the rim is equal to the mean width of the bead measured parallel to the base 17 and the thickness T of the central portion of the element over a region where it adjoins the bead is not greater than 45% of the depth S, this thickness being maintained for a distance radially inwardly of the bead of not less than 80% of the depth of the bead. The crown of the rim has a diameter in excess of that of the port 11 and stands slightly proud of the recess in undeformed condition. Tight sealing is effected by the fluid-pressure. A central part (45), Figs. 3 and 4 (not shown), may be thickened and a vent hole (46) beneath the element avoids air being trapped when fitting the element. The seating surfaces 12, 14 may be conical or spherical. Reference has been directed by the Comptroller to Specification 1,039,401.
Patent GB-1354792-A (GB)
Title: Spark gap device
IPC: H01T2/02
Filed: 1971-09-14
Abstract: 1354792 Spark gaps COMPAGNIE GENERALE D'ELECTRICITE 14 Sept 1971 [16 Sept 1970] 42878/71 Heading H1D A spark gap comprises two main electrodes 2, 4 the former having an aperture 10 in its active face leading to a hollow interior in which is situated a triggering electrode 12 which is larger in cross-section than aperture 10 and which is separated from electrode 2 by a layer of dielectric material 18 which is less than 50 microns thick. The layer 18 can be either an insulating metallic oxide, such as alumina or the oxide of the material of electrode 2 or 12, or can be a sheet of synthetic dielectric.
Patent GB-1443568-A (GB)
Title: Process and apparatus for removing solids formed in the refining of molten lead
IPC: C02F1/40
Filed: 1973-09-12
Abstract: 1443568 Refining lead METALLGESELLSCHAFT AG 12 Sept 1973 [29 Sept 1972] 42942/73 Heading C7D [Also in Division F4] Solid fine-grained material, e.g., copper dross formed on the surface of molten lead during a lead refining process is removed by loosening and suction. Apparatus, Fig. 1, may comprise a hood 2 connected to a vacuum conduit 5, the hood being provided with an opening 3 in at least one longitudinal side 1 and rotary beater rods as loosening means 6a. The hood is preferably open and may be traversed across the surface of the melt, alternatively the melt flows under a stationary hood. Alternative loosening means may be chains, rolls or blade wheels which may be driven or pneumatic blowers, Fig. 2 (not shown). The solid material sucked off the melt in an air-stream which may be cooled by the introduction of a secondary air-stream controlled by a flow disc 13, Fig. 3 (not shown), is passed to a cyclone which separates high-Cu content dust and a long filter, which separates high-Su content dust.
Patent GB-971106-A (GB)
Title: Process for the preparation of polyoxymethylene
IPC: C08G2/00
Filed: 1962-11-14
Abstract: A polyoxymethylene of high molecular weight is prepared by polymerizing trioxane in the presence of sulphur trioxide or a complex compound of sulphur trioxide as catalyst, complex formers mentioned are open chain or cyclic ethers and compounds of trivalent elements of the 5th Group of the Periodic Table.  The polymerization may be carried out as a block polymerization above 65 DEG C., the catalyst being mixed with molten trioxane, advantageously with the exclusion of air and moisture. Alternatively the polymerization may be carried out in an inert solvent or diluent, the trioxane concentration preferably being 40 to 80% when the temperature is 50 DEG C. to 110 DEG C.  A vapour phase polymerization may also be carried out, trioxane vapour and sulphur trioxide vapour (preferably diluted with an inert gas) being injected into a reactor.  The catalyst concentration may be from 10-4 to 1% mol, calculated on the trioxane.  Catalyst residues are preferably extracted from the crude polymer using an aqueous or alcoholic solution of ammonia or an amine, an aqueous solution of a salt, preferably an alkali metal salt of a weak acid.  The sulphur trioxide or complex thereof may be used in conjunction with known catalysts for polymerizing trioxane.  In the examples: (1) the catalyst was a solution of SO3 in 1, 2-dichloroethane and the catalyst residues were removed from the polymer using ethanolamine in methanol: (4) the catalyst was sulphur trioxide-dioxanate in ether; (5) the catalyst was SO3 in dichloroethane and borontrifluoride etherate.
Patent GB-1439909-A (GB)
Title: Stabilized perhydrate compounds
Inventor: JAYAWANT MADHUSUDAN DATTATRAYA
IPC: D06L3/02
Filed: 1974-10-04
Abstract: 1439909 Stabilization of perhydrate compounds E I DU PONT DE NEMOURS & CO 4 Oct 1974 [10 Oct 1973] 43169/74 Heading C1A The process comprises the stabilization of perhydrate compounds, e.g. alkali metal perphosphates, perborates, persilicates, percarbonates or urea peroxides by treating particles of the perhydrate compound with an aqueous silica sol containing up to 8% W/V of SiO 2  which has a maximum particle size of 0À1 microns and depositing 1 to 10% by weight of SiO 2  (based on the weight of the perhydrate) on to the perhydrate particles and drying the resulting product; the silica sol. is prepared by deionizing an aqueous solution of a water soluble silicate, e.g. an alkali metal silicate, to a pH of from 3 to 10 and the sol. may be sprayed on to the surface of the perhydrate. The stabilized percarbonates, in particular, may be utilized in detergent or dry bleach formulations.
Patent GB-1502007-A (GB)
Title: Filing folder
IPC: B42F15/02
Filed: 1975-10-21
Abstract: 1502007 Suspension filing folder SOC D'EXPLOITATION DE LA SA HENRI MALSERT 21 Oct 1975 [21 Oct 1974] 43187/75 Heading B6E A suspension filing folder comprises a pair of covers 1, 2 folded to form a spine 3 and provided along their marginal edges opposite the spine with suspension bars 5, 6 made of ferro-magnetic material, the bar 5 which is provided with an index label rail 9 having also a window 10 in which is located a permanent magnet 11. The magnet may be encased in a plastics housing (Fig. 5) which is retained by the window 10 and the marginal edge may be provided with a cutout opposite the magnet 11. The bars 5, 6 on adjacent folders co-operate with one another. Their ends may be provided with polyamide suspension noses.
Patent GB-1108977-A (GB)
Title: Novel pentanone derivatives
IPC: C07D317/16
Filed: 1966-10-11
Abstract: Novel compounds of the formula CH3CH2-Q-CH2CH2Br (wherein Q is alkylenedioxymethylene of up to 7 carbon atoms) are prepared from 1-bromo-pentanone-(3) by transketalization or, for 2-(2-bromoethyl)2-ethyl-1,3-dioxolane, by forming the cyclic ethylene ketal of an alkyl or hydroxyalkyl alpha-propionyl acetate, reducing this and treating the so-formed 2 - (2 - hydroxyethyl) - 2 - ethyl-1,3-dioxolane with PBr3.  1-Bromo-pentanone-(3) is prepared from ethyl vinyl ketone and HBr or from propionyl bromide and ethene.
Patent GB-1139387-A (GB)
Title: Improvement in or relating to rotary brushes, notably for motor street sweepers
IPC: A46B13/00
Filed: 1967-09-22
Abstract: 1,139,387. Rotary brushes. LE MATERIEL DE VOIRIE. 22 Sept., 1967 [17 Oct., 1966], No. 43284/67. Heading A4K. In a gutter sweeping brush, an outer ring of more closely packed filaments 8, 9 is provided, by welding the channel 6, of one or more curved or segmental strip brushes, to the filament supporting plate 1. The filaments are formed of steel wires, having a sheath coated thereon.
Patent GB-1139353-A (GB)
Title: Film handling apparatus
IPC: G03B21/43
Filed: 1966-09-28
Abstract: 1,139,353. Cine projectors. BELL & HOWELL CO. Sept.28, 1966 [Oct.21, 19651, No. 43350/66. Heading G2E. In a cine projector having a housing for alternatively supporting a film supply in the form of a cartridge 26 or a reel (28), Fig. 2 (not shown), a detector lever 66 senses the presence of a cartridge and engages the power source to drive film from the cartridge for self-threading through the projector. Drive to the cartridge core 46 is automatically cut out after threading as film at 41 actuates microswitch 156. Manual threading is necessary when a reel is used. Insertion of a cartridge pivots detector 66 at 68 whereby, (a) tension roller 84 on arm 92 engages belt 106 to transmit drive from shaft 106 to film drive sprocket 44 and (b) deflector arm 88 is raised from flat 150 on spring-loaded plate 142 which then pivots at shaft 106 to transmit the drive of shaft 106 to the film core gear 48 through gear 112, idler 116 and gears 132, 134, 122, 124 and 50. Gear 50 may transmit drive to spindle sleeve 32 for re-winding when a reel is used. Microswitch 156 actuates solenoid 158 to pivot plate 142 to the disengaged position so that normal film feed may commence.