baber/WOPTO huggingface dataset:
Patent GB-1418497-A (GB)
Title: Thermally stable cyclic phosphonate esters their preparation and polymers containing them as flame retardant additives
IPC: C08L27/00
Filed: 1972-10-10
Abstract: 1418497 Cyclic phosphonates MOBIL OIL CORP 10 Oct 1972 [15 Nov 1971] 46604/72 Heading C2P [Also in Division C3] The invention comprises compounds of Formula (A) and (B) wherein a is 0 or 1; b is 0, 1 or 2; c is 1, 2 or 3; a+b+c is 3; d is 0, 1 or 2; e is 1,2 or 3; d+e is 1, 2 or 3; R, R<SP>1</SP> and each R<SP>4</SP> (independently) are alkyl, phenyl, halophenyl, hydroxyphenyl, tolyl, xylyl, benzyl, phenethyl, hydroxyalkyl, phenoxyethyl or dibromophenoxyethyl; R<SP>2</SP> is alkyl; R<SP>3</SP> is C 1 -C 4  alkyl or C 1 -C 4  hydroxyalkyl; when d = 0 and e = 1, R<SP>5</SP> is alkyl, phenyl, chlorophenyl, bromophenyl, dibromophenyl, tribromophenyl, hydroxyphenyl, naphthyl, tolyl, xylyl, benzyl or phenethyl; when d+e = 2, R<SP>5</SP> is a direct bond, alkylene, vinylene, phenylene, tetrachlorophenylene or tetrabromophenylene; and when d+e = 3, R<SP>5</SP> is benzenetriyl. Preparation of the above is from compounds of formulµ by the reactions effected at elevated temp. (up to 300‹ C.) optionally in the presence of a catalyst. The values of b, c, d and e in the products may vary in dependence on the relative proportions of the reactants. In Examples Ic and Id, the XI reactant dimethyl methylphosphonate is prepared in situ from trimethyl phosphite. The above reactions are also said to yield "various polycondensed products". Compounds (A) and (B) are used as flameretardants for polymeric materials (bulk, foam or fibrous).
Patent GB-1119605-A (GB)
Title: Cutting insert
IPC: B23B27/14
Filed: 1966-10-19
Abstract: 1,119,605. Cutting tools. KENNAMETAL Inc. 19 Oct., 1966 [16 June, 1966], No. 46662/66. Heading B3B. A hard metal insert for a cutting tool comprises top and bottom parallel faces and a peripheral surface extending between the faces at right-angles thereto and forming sharp edges at the juncture of the surface with the faces, a chip controlling groove 22 extending around at least one of the faces of the insert and positioned inwardly of the edge and providing a cutting edge land 20 which extends completely around the insert, the width of the land and/or the groove varying in transverse width along the length thereof. The groove is uniformly arcuate in cross-section, and may vary in depth along its length, being deepest at its mid-point 32 between the corners. The insert may be circular, or square, triangular or rhomboidal in shape, the land and groove width being smaller at the corners in the case of the latter polygonal shapes than at a point midway between the corners. A central hole 14 is provided to facilitate mounting the insert on a tool shank.
Patent GB-1402010-A (GB)
Title: Electrostatographic developing material
IPC: G03G9/08
Filed: 1972-10-11
Abstract: 1402010 Electrostatic developer XEROX CORP 11 Oct 1972 [12 Oct 1971] 46891/72 Heading G2H An electrostatic developer material comprises toner particles, a metal salt of a fatty acid and a surface-modified colloidal silica. In use it is mixed with 10 to 1,000 parts of its weight of carrier particles, which are preferably magnetic, and applied to a surface bearing an electrostatic latent image, suitably by a magnetic brush. After transfer of the developed image residual toner is removed by a blade, web or brush and as the metal salt-silica mixture is wiped across the surface it exerts a cleaning action. Lists of toner materials, carriers and metal salts which can be used are given.
Patent GB-1187270-A (GB)
Title: Improvements relating to Temperature Control in Electrical Power-Supply Units
Inventor: RICE DAVID JOHN
IPC: G05F1/573
Filed: 1967-10-17
Abstract: 1,187,270. Automatic voltage control. CATYLATORS Ltd. Oct.9, 1968 [Oct.17, 1967], No.47303/67. Heading G3R. The semi-conductor control element, e.g. a series transistor or thyristor of a regulated power supply unit has a heat sink which is thermally associated with a temperature sensitive device, e.g. a thermistor or P.T.C. resistor, which is arranged to initiate turning-off of the control element when the temperature of the heat sink exceeds a predetermined maximum value. As shown, a supply unit comprises input terminals 1, 2, output terminals 3, 4, a series transistor VT2 controlled in known manner by a circuit including a comparator C and an amplifier A, a thermistor TH mounted on the heat sink of the transistor VT2, and a further transistor VT1 which is inter-connected with the thermistor TH and the transistor VT2. When the temperature of the heat sink reaches a desired maximum value the change in base voltage, due to the reduction in resistance of the thermistor TH, of the transistor VT1 is such that the latter commences to conduct; current is thus diverted from the base of transistor VT2 so that the output current from the unit is reduced, as is also the power to be dissipated in the transistor VT2.
Patent GB-1527363-A (GB)
Title: Tube made from a synthetic plastics material surrounded by a rigid tubular sheath
IPC: B29C63/00
Filed: 1975-11-18
Abstract: 1527363 Reinforced tube COMPAGNIE PLASTIC OMNIUM 18 Nov 1975 [19 Nov 1974] 47543/75 Heading F2P A tube 1 of synthetic material (e.g. polytetrafluoroethylene) is surrounded by a rigid sheath 6 (preferably of metal), each end of the synthetic material tube being provided with a flange 14 extending radially beyond the sheath 6. The sheath has, adjacent each flange 14, a substantially annular locking member 7 engaging a correspondingly shaped groove 4 in the outer surface of the synthetic material tube 1. In the embodiment described the ends of the tube 1 are cut away at 3 and a flange 10 pushed over and held in place by folding back the tube and welding the flange 10 to the sheath 6 at 13. The locking member 7 may be formed by two half rings or it may have a succession of separate members and is preferably welded to the sheath 6 at 12, 13. The tube may be formed by winding layers of P.T.F.E. tape on to a mandrel.
Patent GB-1127940-A (GB)
Title: Spinning apparatus with means for winding up filaments
IPC: D01D7/00
Filed: 1966-10-26
Abstract: 1,127,940. Spinning apparatus. KARL FISCHER APPARATE-u. ROHRLEITUNGSBAU. 26 Oct., 1966 [27 Oct., 1965; 2 Aug., 1966], No. 48124/66. Heading B5B. A spinning apparatus comprises a plurality of adjacent units each comprising a spinning head having at least one row of spinning nozzles, a shaft 1 leading downwardly from said row, godet rollers 3, 3<SP>1</SP>, mounted below the shaft for rotation about horizontal axes, reels 4, 41 for winding .up the filaments issuing from said nozzles, the filaments traversing the godet rollers and extending from there to the reels, and means for driving the reels 5, the axes of the godet rollers extending parallel to the row of spinning nozzles. As shown in Fig. 1, the unit described differs from the conventional design by disposition of the horizontal axes of the godet rollers :3, 3<SP>1</SP> parallel rather than transversely to the plane E and by the disposition of the axes of the reels 4, 4<SP>1</SP> transversely rather than parallel to the plane E. As shown in Fig. 2 in a row of adjacent units, said row of units may extend parallel to an axis parallel to said row of nozzles, and each unit may include an upper group of reels 4 and a lower group of reels 4<SP>1</SP> disposed on a lower level, both groups being disposed on opposite sides of the vertical central plane G of the unit. Thus, filaments after leaving the upper godet roller 3<SP>1</SP> are laterally diverted, the four filaments on the left of plane G moving towards the left with reference to Fig. 2, whereas the four filaments at the right of plane G are diverted to the right. In this way individual units may be mounted in close adjacent relationship without interference of one group of reels with another. As shown in Fig. 3, the godet rollers include one lower roller 3 disposed on a lower level and at least two upper godet rollers 3<SP>1</SP>, 3<SP>11</SP> disposed on a higher level, the reels 4, 4<SP>1</SP> comprising groups of coaxial reels, each group being disposed below one of said upper godet rollers.
Patent GB-1521608-A (GB)
Title: Channel selection apparatus for use in tv or radio receivers
IPC: H04N5/44
Filed: 1976-11-19
Abstract: 1521608 Digital channel section for receivers MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 19 Nov 1976 [1 Dec 1975] 48381/76 Heading H3Q In a channel selection apparatus for television or radio receivers, digitized voltages corresponding to frequencies of respective channels or boundary frequencies between respective adjacent channels are Hadamard transformed and stored at 8, Fig. 2, and the stored information is inverse-Hadamard transformed at 13 to reproduce the digitized voltages for use as channel selection voltages or channel indication voltages. The information stored in PROM 8 is fed through an input register to an operation unit 14 and quantities stored, e.g. X (0)  and X (1)  are added at 14 and the sum is stored in RAM A. the result of this operation stored in RAM 13 are selected by address instruction from ROM 15 and are applied to varactor tuner 1, 2, 3 via a D/A converter 19. In a modification (Fig. 3, not shown) the differences between the average values and the transformed values of electronic tuning voltage are stored in PROM and this enables the memory capacity to be reduced still further. In a further modification (Fig. 4, not shown) only those of the Hadamard transformed values which are large are stored in PROM, the rest are stored in ROM (9) so that the memory capacity can be further reduced. In a still further modification (Fig. 5, not shown) the differences between the transformed values and the average values are stored in the PROM which enables the capacity of the memory to be further reduced. In a further embodiment (Fig. 6, not shown) channel boundary frequencies corresponding to a channel interval of 6 MHz are obtained from RAM 13 and a sweep control circuit (22) causes the tuning to sweep until the selected frequency is received. In a modified search tuning arrangement (Fig. 7, not shown) voltages corresponding to the channel boundary frequencies stored in RAM 13 are sequentially transferred to RAM (26). A comparator (25) compares the voltages selected from RAM 13 with the sweep voltage and stops a counter in the operation unit 14 when these voltages coincide. The contents of the counter is shown on a channel number indicator (27) which can be the TV screen, numerical display tubes, LED's or via a D/A converter a voltmeter.
Patent GB-1526046-A (GB)
Title: Cast vehicle wheels
IPC: B60B19/10
Filed: 1974-11-09
Abstract: 1526046 Vehicle wheels GKN KENT ALLOYS Ltd 30 Oct 1975 [9 Nov 1974] 48581/74 Heading B7C A cast light alloy vehicle wheel comprises a wheel disc with a nave 10 from which extends a disc portion 14 provided with ventilation apertures 16, a rim with a well portion 18 joined to the disc portion 14, a plurality of reinforcing webs 24 each lying between two adjacent apertures 16 and extending from one face of the portion 14 to the adjacent bead seat portion 20 of the rim, and a plurality of reinforcing fillets, formed by locally thickening the disc portion 14, located on the opposite face of the portion 14 to the webs 24 at positions cor. responding to the webs 24 and each terminating at one edge adjacent to, but spaced from the well portion 18.
Patent GB-1471098-A (GB)
Title: Light communication cable
IPC: H01B7/17
Filed: 1975-11-27
Abstract: 1471098 Light communication cables FURUKAWA ELECTRIC CO Ltd 27 Nov 1975 [11 Dec 1974] 48875/75 Heading G2J A light communication cable comprises a plurality of intertwisted units 3 each of which includes a plurality of optical fibres 1 laid in parallel and loosely covered by an inner sheath 2, the intertwisted units 3 being covered by an outer sheath 5. A tension member may be inclined in each unit 3 or positioned between the units Figs. 5, 6, (not shown). The outer sheath 5 is laminated and includes an electrically conducting layer.
Patent GB-1175054-A (GB)
Title: Improvements in coatings applied to metal articles having a cutting edge
Inventor: SYMONS NORMAN KENDALL JELINGER
IPC: B26B21/60
Filed: 1965-11-20
Abstract: 1,175,054. Cutting &c. WILKINSON SWORD Ltd. 17 Feb., 1967 [20 Nov., 1965], No. 49379/65. Heading B4B. [Also in Division B2] A metal article having a cutting edge, e.g. a razor blade, has on and/or adjacent the cutting edge a coating of a perhalo carbon polymer or copolymer, e.g. PTFE, and a fluorocarbon oil which boils at atmospheric pressure within the range of 200‹ to 400‹ C. The fluorocarbon oil may be perfluorokerosene or chlorofluorocarbon oil. The coating may be produced by (1) first forming a coating of the perhalocarbon polymer and then applying the fluorocarbon oil per se, or as a solution or dispersion thereto by dipping or spraying; (2) first coating with the fluorocarbon oil and then forming the perhalocarbon polymer coating thereon; (3) applying, e.g. by spraying, a mixture of the perhalocarbon and fluorocarbon oil. The admixed coating may be heated, e.g. sintered, or the article coated with the perhalocarbon polymer may be heated in a bath of the fluorocarbon oil. The heating may take place under pressure in an inert and/or reducing gas or using the autogenous pressure of the fluorocarbon oil; in an inert and/or reducing atmosphere at atmospheric pressure or in a vacuum; or with the fluorocarbon oil in the vapour phase.
Patent GB-1195114-A (GB)
Title: Novel Composite Structure
IPC: B24D18/00
Filed: 1967-11-01
Abstract: 1,195,114. Composite polyimide-novolak phenolic resin structures. E. I. DU PONT DE NEMOURS & CO. 1 Nov., 1967 [2 Nov., 1966; 2 Feb., 1967], No. 49720/67. Heading B5A. [Also in Division B2] A composite structure comprising a layer of coalesced polyimide resin directly bonded to a layer of a cured novolak phenolic resin at least 10 mils thick is made preferably by forming the polyimide layer from the particulate material at 3000-30,000 psi and 200-500‹ C. and casting a layer of the phenolic resin under pressure on to the polyimide resin. The shear strength of the bond between the layer is at least 1000 psi and both layers may contain an inert filler; the phenolic layer acting as a support for the polyimide layer. The structure may be used as a brake lining, the polyimide layer containing silicon carbide or aluminium powder being used as the friction surface.
Patent GB-1064228-A (GB)
Title: Improvements in or relating to liquid metering apparatus
Inventor: ABSOLON ERIC WILLIAM
IPC: F16K31/363
Filed: 1964-12-07
Abstract: 1,64,228. Fluid-pressure servomotor systems. AVERY-HARDOLL Ltd. Sept. 10, 1965 [Dec. 7, 1964]. No. 49756/64. Heading G3P. A valve 12 located downstream of a displacement meter (not shown) is adapted to close when the flow through the meter falls below a predetermined value. In the embodiment shown, when the flow rate falls a flow-responsive member 22 approaches its seat 23 and, via rod 32, unseats a pilot valve 34, thereby allowing liquid to pass via ports 36 to act on a piston 39 to raise the latter to cause a relay valve 21 to move to prevent flow via ports 48 from a chamber 16 above a piston 15 carrying the valve 12. Since the chamber 15 communicates via port 17 with the upstream side of valve 12, closure of ports 48 causes a pressure build-up in the chamber thereby causing the valve 12 to close. After the valve 12 has closed the pressure across piston 39 is equalized via restricted port 42 and passage 41, thereby allowing spring 45 to lower the piston, open the relay valve and thus open the valve 12. A pilot valve 19 may be provided which is actuated by a counting mechanism driven by the meter, this valve being normally open but arranged to cause closure of valve 12 after a predetermined quantity of liquid has passed through the meter.
Patent GB-1372259-A (GB)
Title: Fertilizer spreading apparatus
IPC: A01C15/00
Filed: 1971-10-26
Abstract: 1372259 Reciprocating fertiliser spreader C BEZZECCHI 26 Oct 1971 [27 Oct 1970] 49791/71 Heading A1D A fertiliser spreading device includes a mechanism to produce reciprocation of its distributor arrangement; granular fertiliser from hopper 1 passes through a collector bowl, which is fixed to reciprocating shaft 5, to be discharged through spout 4 and a member 12 fixed to the shaft 5, terminates in a channel portion 12b which extends parallel to the shaft, a further shaft 16 rotatable by an external power source, such as a tractor power take-off terminates in a plate 15 having an eccentrically mounted spindle 14 carrying a roller 13 which engages in the channel 12b and, on rotation of shaft 16, pushes the member 12 from side to side, causing reciprocating motion of the shaft 5. A stirrer device 19, having projections 20, is also fixed to the shaft 5 and reciprocates within the hopper. The degree of overlap of holes in plates 7, 8 may be varied to control the discharge from the hopper.
Patent GB-1536319-A (GB)
Title: Multilevel oven for baking food products
IPC: A21B3/04
Filed: 1976-12-06
Abstract: 1536319 Multi-level baking oven ETABS FRINGAND 6 Dec 1976 [30 Sept 1976] 50825/76 Heading A2A A multi level baking oven loaded and unloaded by means of a movable rack 6 having trays 18 which support articles for baking comprises a system of a plurality of separate annular tubes 12 arranged side by side for the passage of steam in a closed circuit for heating the oven and at least one burner 10 (not shown) for heating the lowest portion 19 of the tubes to convert the water in the tubes to steam, the various decks or levels of the oven being constituted by rows of portions of the tubes 12 extending horizontally within the oven, the tube portions being arranged in parallel relationship to one another so that plates or trays 18 carried by the rack 6 are located between two consecutive rows of tube portions.
Patent GB-1060735-A (GB)
Title: A method of producing melamine by the vertical decomposition of urea
Filed: 1963-12-24
Abstract: In a process for the continuous production of melamine by the thermal decomposition of urea, ammonia and urea are continuously introduced at the bottom of a vertical reaction tube with a built-in heater, the reaction temperature being in the range 390 DEG  C. to 450 DEG  C., the partial pressure of the ammonia being less than 140 kg./cm.2 and more than 62 kg./cm.2 at 390 DEG  C., more than 114 kg./cm.2 at 450 DEG  C., and greater than the pressure at which ammonia-removing condensation (e.g. to melem and melam) occurs when intermediate temperatures are used, thereby causing transformation of urea into melamine in a liquid phase mainly constituted of molten melamine, with continuous removal of the melamine formed from the top of said reaction tube.
Patent GB-1172086-A (GB)
Title: Pharmaceutical preparations containing 1,2alpha-Methylene-Steroids
Filed: 1966-11-14
Abstract: 1,172,086. Anti-androgenic medicines. SCHERING A.G. 14 Nov., 1966 [22 Nov., 1965], No. 50901/66. Heading A5B. [Also in Division C2] Phermaceutocal anti-androgenic compositions comprise a carrier and a compound of the general formula: wherein R 1  is hydrogen or a C 1-6  alkyl or C 2-8  acyl group and R 2  is an acyl group. They may be in conventional forms for oral and parenteral administration.
Patent GB-1443298-A (GB)
Title: Method of heat exchange and heat exchanger
IPC: F28D13/00
Filed: 1974-11-27
Abstract: 1443298 Tubular heat exchangers G A PIEPER 27 Nov 1974 [30 Nov 1973] 51511/74 Heading F4S [Also in Division B1] Heat exchange between primary fluid flowing through one or more compartments 2 and a secondary fluid flowing upwardly through a plurality of vertical tubes 3 extending between tube plates 4, 5 and inlet and outlet chambers 6 and 7 is improved by the presence of solid particles 8 maintained in a fluidized state throughout the entire length of each tube 3, the upper ends of said tubes 3 opening into a layer 9 of said particles 8 located in the outlet chamber 7, which layer 9 is continuously or intermittently stirred by means of one or more sets of blades 11, 18 mounted on a vertical shaft 10. Secondary fluid from the inlet chamber 6 enters the lower end of each tube 3 via a throttling device comprising a supply tube 12 mounted in a plug 13 pressed into the end of the tube 3 by a pressure plate 14. The degree of throttling of the secondary fluid flow is determined by the length and internal diameter of the tube 12. The supply tube 12 may be straight or may be wound into a spiral or helical configuration. A layer of coarse solid particles 17, which cannot be fluidized by the secondary fluid, are located above a perforate impact plate 16 serving to uniformly distribute the incoming fluid from tube 12 across the tube 3 which may be grooved internally. One or more perforate plates 15 are provided across the inlet chamber 6 to reduce the possibility of clogging of the tubes 12 by dirt carried by the incoming secondary fluid. Different primary fluids may be passed through adjacent compartments 2.
Patent GB-1068760-A (GB)
Title: Low shrinkage modacrylic interpolymer
IPC: C08F220/44
Filed: 1965-12-06
Abstract: A novel fibre-forming, flame-resisting inter-polymer having low dry heat shrinkage characteristics, comprises at least 60% weight acrylonitrile, at least 5% weight vinylidene chloride, at least 3% weight vinyl acetate and at least 3% weight acrylamide. Various methods of polymerization and the use of peroxy or redox catalysts, wetting agents and molecular weight regulators are mentioned:  in examples polymerization is effected in aqueous medium (catalyst K2S2O8, SO2, Fe(II)). From solutions of the interpolymer, e.g. in a dimethylamide, fibres may be spun and coagulated, stretched in hot water and dyed.
Patent GB-1293951-A (GB)
Title: A method of and an apparatus for making preformed strands or cables
IPC: D07B3/04
Filed: 1969-10-22
Abstract: 1293951 Stranding GLANZSTOFF AG 22 Oct 1969 [9 Nov 1968] 51742/69 Heading D1T A wire stranding apparatus wherein the wires 16 are pre-formed into helices before being stranded together comprises at least two coaxial discs 23, 24 each of these discs having at least one circular row of bores each of which rows in one disc is of the same diameter and contains the same number of bores as a corresponding row in the or each other disc, the bores in one disc being offset by an adjustable amount with respect to the bores in the or each other disc. The edges of the bores are curved and as the wires pass from one disc to the other the wires 16 are permanently deformed. The discs 23, 24 are rigid with a rotating cylinder 1 in which are floating spool carriers 3. As the wires 16 contact the edges of the bores in the discs 23, 24 said edges displace their points of contact on the wires 16 once around the periphery of the wire for every one revolution of the stranding apparatus. Each supply spool 2 is controlled by a brake 9 responsive to a dancer roller 4 over which the wire from the spool 2 passes. The stranded wires 27 pass through a twisting sleeve 25, pressure jaws 26, stretching rollers 28, 29, 31, 32, a false-twist attachment 30, a traversing element 33 and then onto a drum 34. The false-twist attachment and one pair of stretching rollers may be omitted. The discs 23, 24, the twisting sleeve 25, the stretching rollers, the false-twist attachment 30 and the winding mechanism may be connected to independent variable speed drives. The twisting sleeve 25 and the pressure jaws 26 may be displaced along the stranding axis. The bores in the discs 23, 24 have sleeves of metal carbide or other hard metal.
Patent GB-1190369-A (GB)
Title: Improvements in and relating to the Washing and Separation of Mixtures of Liquids and Solids
Inventor: FAHEY DENNIS
IPC: B01D29/00
Filed: 1966-07-22
Abstract: 1,190,369. Vibrating filter. WILLIAM BOULTON Ltd. 14 July, 1967 [22 July, 1966], No. 51899/69. Heading B1D. The description corresponds to that relating- to Fig. 3 of Specification 1,190,368 and the claims concern the arrangement of two screens with solids transferred from one to the other through an external solids-washing stage.