baber/WOPTO huggingface dataset:
Patent GB-1495728-A (GB)
Title: Method and apparatus for restoring badly discoloured or fractured involved teeth
IPC: A61C5/08
Filed: 1974-12-02
Abstract: 1495728 Tooth facing F R FAUNCE 2 Dec 1974 [5 Dec 1973] 52053/74 Heading A5R A cosmetic facing 18 for restoring teeth comprises a single opaque plastics layer shaped to conform to the outer enamel surface of the tooth, the layer having knife edges for smooth blending into the tooth surface, the facing may be shaped to cover the labial surface and incisal surface of the tooth and may be adhered to a layer 28 of dental filler material applied to the tooth. Two such facings may be used to support a false tooth in a gap between two natural teeth, a facing being adhered to each natural tooth. The facings may also be utilised in periodontic splinting.
Patent GB-1093770-A (GB)
Title: Improvements in or relating to static switching systems
Inventor: LARSON ARTHUR BERTEL
IPC: H02J9/06
Filed: 1965-12-08
Abstract: 1,093,770. Standby supply systems. TRW Inc. Dec. 8, 1965, No. 52082/65. Heading H2H. A load 12 is switched to an auxiliary supply 11 on failure of a main suppl 10 by reverse parallel connected thyristors 14, 15 energized by a static circuit 40 which selects the higher of two phase displaced voltages derived from the main supply and reverses a bi-stable circuit 25, diverting its output to energize the appropriate thyristors. A delay unit 46 is incorporated to prevent changeover during transients. A zero current sensing circuit 35 overrides a phase control unit when initially connecting the supply 10. The alternative supply may be provided by an inverter.
Patent GB-1505449-A (GB)
Title: Apparatus for the hydraulic raising of solids
IPC: F04D1/06
Filed: 1976-12-15
Abstract: 1505449 Dredging SULZER BROS Ltd 15 Dec 1976 [16 Dec 1975] 52329/76 Heading E1F In the raising of solids from the sea bed to a ship 2 by hydrostatic pressure, pressure loss in a delivery line 17 and a pressure line 14 is overcome by having at an intermediate height below the water level, a hydraulic motor 4 e.g. a turbine, drivingly connected to a multi-stage centrifugal pump 11, the hydraulic motor being connected in an open system (Fig. 1) or a closed system (Fig. 2 not shown) to a high pressure pump 3 on the ship 2 by a pressure fluid line 6.
Patent GB-1184050-A (GB)
Title: Reversible Hydrodynamic Torque Converter
Inventor: HOWARD WAYNE ROBERT
IPC: F16H61/54
Filed: 1968-11-06
Abstract: 1,184,050. Hydrodynamic torque converters. CLARK EQUIPMENT CO. 6 Nov., 1968 [17 Nov., 1967], No. 52475/68. Heading F2C. In an hydrodynamic torque converter having an impeller 22, Fig. 1, a first reactor 38 disposed downstream of a first turbine 34 when in a fluid flow path 84 of a toroidal chamber 80 and a second reactor 40 disposed upstream of a second turbine 36 when in the fluid flow path, the first or second turbine/reactors are respectively locatable in or out of the fluid flow path for rotation of the first or second turbines in opposite directions. The impeller 22 is driven by input shaft 14 and the turbines 34, 36 drive output shaft 18 through a slidable splined connection 52. Reactor 38 is slidably splined at 66 to a ring 68 secured to the housing 10 and reactor 40 is also slidably splined to the housing 10 at 76. The entire turbine/reactor assembly can be moved axially by rotation of a shaft 83 which is connected via an arm 85 and pin 87 to a support 74. The assembly is located so that a sleeve 56 blocks the fluid flow to establish neutral. In another embodiment the turbines and reactors are fixed axially with the turbines 106, 108, Fig. 2, driving an output shaft 96 through gears 128, 130. The toroidal chamber 154 has fixed and movable parts 156, 158 which are partially telescoped relative to each other so that the fluid path can be located to flow through either of the turbine/reactor sets or can be located so that sleeve 136 blocks the fluid flow to establish neutral.
Patent GB-1342136-A (GB)
Title: Portable electronic calculators
IPC: G06F15/02
Filed: 1971-11-12
Abstract: 1342136 Electronic calculators SUWA SEIKOSHA KK 12 Nov 1971 [17 Nov 1970] 52679/71 Heading G4A A large scale integrated circuit calculating unit performs predetermined calculations in response to actuation of switches which are operated by the application of an external magnetic field, and provides an output to a liquid crystal display unit. The switches may be reed contact units located inside the housing of the calculator in the vicinity of external recesses for receiving the end of a permanent magnet. The arrangement enables manufacture of a compact, low weight calculator whose power consumption is also low.
Patent GB-1173390-A (GB)
Title: Production of Steel Castings
Inventor: HOWSON HAROLD OTTER
IPC: B22C3/00
Filed: 1967-11-21
Abstract: 1,173,390. Mould-lining and core-coating  maxerials; casting processes. DAVID BROWN GEAR INDUSTRIES Ltd. 18 Nov., 1968 [21 Nov.; 1967], No. 52924/67. Heading B3F. [Also in Division C3]  Superficial intergranular fracture of steel castings is reduced by applying to some or all the internal surfaces of the mould (including core surfaces) a paint containing an active substance having a greater affinity than aluminium for nitrogen. The active substance may be Zr and/or Ti in elemental or an alloy form, e.g. ferro-titanium or silico-zirconium, and preferably is a powder of less than 150 mesh. It may also be applied after the other constituents of the paint have been coated and while they are still wet. The molten steel introduced into the mould may also contain a small and accurately controlled amount of Zr and/or Ti as element or alloy. Other ingre dients for the paint may include sodium carboxy methyl cellulose as binder and sodium hexametaphosphate as hardener.
Patent GB-1180135-A (GB)
Title: A Suspending Tape Intended for Forming Pleats or Folds in Curtains and the like.
IPC: A47H13/16
Filed: 1967-11-22
Abstract: 1,180,135. Suspending curtains. VORWERK & SOHN K.G. 22 Nov., 1967 [24 Nov., 1966; 10 Feb., 1967; 24 June, 1967], No. 53243/67. Heading A4B. A curtain tape 9, with spaced pockets 12 to receive suspension elements 13 and one or two drawcords 10, 11, includes spaced apart members 9a in alternate portions b between adjacent pockets 12 which slidably support the drawcords 10, 11, each section c between adjacent members 9a forming a fold 14a when the drawcords are pulled to move the members 9a towards each other. The folds 14a are retained by engagement of the limbs of the suspension element 13 in adjacent pockets 12. Reinforcing threads or wires 15, 16 may be woven into the tape 9. In modification (Figs. 6, 7) the pockets (17) extend over nearly the whole width of the tape and are closed at their upper ends (17a).
Patent GB-1369437-A (GB)
Title: Cigarette filters
IPC: A24D3/02
Filed: 1970-11-09
Abstract: 1369437 Tobacco-smoke filters MOLINS Ltd 8 Nov 1971 [9 Nov 1970] 53274/70 Heading A2C A cross-flow filter element for a cigarette or similar article comprises a rod 2 formed with substantially axial grooves 4 separated by rib portions 6 which contact one another at the ends 6A of the rod 2 so as to close alternate grooves 4 at opposite ends of the rod 2. The rod 2 may be made by first folding inwards circumferentially spaced regions of a continuous tube by means of die wheels and then pinching together alternate grooves by means of co-operating wheels having holes which enter the grooves at regular intervals. The continuous tube may be formed by extruding filter material into a tubular section, but is preferably formed by bringing together the edges of a continuous web of filter material, especially a web which has been formed with longitudinal grooves along which it is to be subsequently folded. The formed rod 2 is preferably enclosed in a tubular wrapping before being cut at regular intervals to form individual filters, but it may be cut without wrapping and the elements so formed inserted into plastics mouthpieces. Suitable filter materials include continuous crimped cellulose acetate fibres with a bonding agent in the form of a thermoplastic resin or a volatile solvent, which agent can be activated or set by heat to hold the filter material in its final shape. Alternatively, a web comprising one or more layers of filter paper or a web which includes one or more layers of granular, powdery or other particulate material (such as collagen or collagen-filled sheet material) sandwiched between layers of paper or other sheet material, or a web comprising a mixture of cellulose fibres and collagen, may be used.
Patent GB-1215419-A (GB)
Title: Absorption refrigeration apparatus
IPC: F25B15/06
Filed: 1969-10-31
Abstract: 1,215,419. Refrigerating. TRANE CO. 31 Oct., 1969 [5 Nov., 1968], No. 53532/69. Heading F4H. In an absorption refrigeration system having a condenser 12, one or more generators 14, an evaporator 16 and an absorber 18 in a closed circuit utilizing a solution of lithium bromide and water as refrigerant and absorbent respectively, the absorbent diluted in the absorber passes through a conduit 74 and heat exchanger 54 to the generator and concentrated absorption solution flows from the generator through a conduit 52 and the heat exchanger 54 to a further heat exchanger 58 which is cooled by a heat exchange fluid from a heat sink source 78. The heat exchanger 58 is situated in the conduit 52 midway between the heat exchanger 54 and a pump 64. A valve 80 regulates the flow of coolant to the heat exchanger 58 in dependence on the temperature of the solution leaving the exchanger 58. In a modification the flow of absorbent from the generator is cooled in the exchanger 54 and then mixed with dilute solution from the absorber prior to introduction into the exchanger 58.
Patent GB-1225076-A (GB)
Title: Pharmaceutical compositions
IPC: G03B23/02
Filed: 1969-10-31
Abstract: 1,225,076. Composition comprising 3-6-diaminothioxanthene-10,10-dioxides. UPJOHN CO. 31 Oct., 1969 [1 Nov., 1968], No. 53550/ 69. Heading A5B. A pharmaceutical composition comprises 3,6- diaminothioxanthene-10,10-dioxide of the formula: or an acid addition salt thereof and a carrier or diluent. The compositions may be in forms suitable for oral or parenteral use or in the form of suppositories; or a food premix for treating domestic birds and animals. The compositions may also contain other anticonvulsant agents such as mephentoin, ethotoin, primidone, phensuximide, paramethadione, diphenylhydantoin or trimethadione, barbiturates such as phenobarbital, mephobarbital and metharbital, muscle relaxants such as meprobamate and chlorphenesin carbamate, antianxiety agents such as chlordiazepoxide, diazepam and oxazepam and stimulants such as desoxyephedrine and amphetamine. Ascorbic acid and chlorobutanol may also be present.
Patent GB-1133216-A (GB)
Title: Method and catalyst for production of nitrfles
Inventor: KHOOBIAR SARGIS
IPC: B01J23/18
Filed: 1965-12-17
Abstract: 1,133,216. Dehydrogenation catalysts. HALCON INTERNATIONAL Inc. 17 Dec., 1965 [18 Dec., 1964], No. 53640/65. Heading B1E. A dehydrogenafion catalyst comprises MoO 3  or WO 3  on activated alumina e.g. eta or gamina alumina in combination with antimony, tin, titanium or (when the catalyst is MoO 3 ) tungsten oxide. The alumina has a purity of at least 99% and a surface area of at least 10 m<SP>2</SP>/gm. The Al 2 O 3  may be activated by heating at 500-2000C. Conventional preparative details are provided.
Patent GB-1173550-A (GB)
Title: Flow Metering Device.
IPC: G01P13/00
Filed: 1968-11-14
Abstract: 1,173,550. Measuring fluid-flow. PIRELLI S.P.A. Nov.14, 1968 [Nov. 29, 1967], No.53976/68. Heading G1R. In a fluid-flow metering device, such as for indicating the sense and magnitude of the fluid-flow in the flow line between a fluid impregnated cable and a supply bank, a cylindrical element 5, normally located in a neutral zone opposed springs 6a, 6b in a central bore 2 provided with grooves 9 increasing in cross-section from the neutral zone to the ends of the bore 2, is moved towards one of the ends of the bore 1 depending on the sense and magnitude of the flow which is indicated by the position of the element 5 relative to a suitably graduated and scale provided on the external surface of a transparent body 1.
Patent GB-1444737-A (GB)
Title: Electron beam projection systems anti-personnel projectile
IPC: H01J37/305
Filed: 1973-11-23
Abstract: 1444737 Automatic control INTERNATIONAL BUSINESS MACHINES CORP 23 Nov 1973 [14 Dec 1972] 54510/73 Heading G3N An electron beam projection apparatus incorporates deflection feedback circuits responsive to scan limit detectors determining when a desired maximum scan amplitude is attained by the electron beam. As shown, the beam current of a convention electron beam projection system 1-10 is detected by a secondary electron detector 12 or by current in a wafer 11 and selectively fed by a switch 14 through a preamplifier to attenuators 16, 17, the signals from which are processed in similar circuits to provide deflection currents in X, Y coils 4, 5 whereby a raster-like pattern is produced over the surface of the wafer. Each circuit comprises an integrating amplifier 18, 19 to which the attenuated signal is fed, a scan limit detector providing a flyback signal along feedback path 24, 25 at a maximum desired scan amplitude and an output amplifer 20, 21 providing the deflection current. A mathematical demonstration that the system provides a uniform exposure rate is set out in the Specification.
Patent GB-1319098-A (GB)
Title: Additive to reduce frictional pressure loss in liquid  hydrocarbons
IPC: C09K8/60
Filed: 1970-11-18
Abstract: 1319098 Wells &c HALLIBURTON CO 18 Nov 1970 [20 Nov 1969] 54859/70 Heading E1F [Also in Division C5] A hydraulic well fracturing composition comprise a hydrocarbon fracturing liquid (e.g. kerosene) having dissolved therein at least 0.25 pounds, per 1000 gallons of hydrocarbon fracturing liquid, of a polymer selected from (1) homopolymers of or random copolymers thereof in which R 1  is H or CH 3 , R 2  is or R 3  is an alkyl radical in either the meta or para position containing from 3 to 10 carbon atoms, and R 4  is an alkyl radical containing from 4 to 18 carbon atoms or the cyclohexyl radical, (2) random copolymers of and containing at least 25% by weight of units derived from in which R 1  and R 2  are as defined above, R is -CH=CH 2  or CH 3 -C=CH 2 , and R 5  is a hydrogen atom or an alkyl radical containing 1 or 2 carbon atoms, (3) random copolymers of and CH 2 =CH-C-O-R 6  containing at least 25% by weight of units derived from in which R 1  and R 2  are as defined above, and R 6  is an alkyl radical containing from 1 to 3 carbon atoms, and (4) random copolymers of and containing at least 25% by weight of units derived from in which R 1 , R 2  and R 6  are as defined above; said polymer having a molecular weight of at least one million and an intrinsic viscosity in a good solvent (a defined term) of at least 2 dl/g. Polymers specified include those formed from n-propyl styrene, t-butyl styrene, alkyl acrylates and/or methacrylates.
Patent GB-1281766-A (GB)
Title: Flame retardant polyolefines
IPC: C08K9/06
Filed: 1970-11-18
Abstract: 1281766 Propylene polymer compositions HERCULES Inc 18 Nov 1970 [2 Dec 1969] 54864/70 Heading C3P Moulding compositions comprise (1) a maleic anhydride-modified proplyene polymer, (2) glass fibres sized with an epoxy- or amino-substituted silane, (3) antimony trioxide and (4) a halogenated flame proofing compound. The compositions may also comprise a further propylene polymer, e.g. a crystalline homopolymer or copolymer with up to 25 mole per cent of another olefin, e.g. ethylene. The halogenated compound may be a chlorinated paraffin, tetrachlorophthalic anhydride, hexachlorocyclopentadiene dimer, tetrachlorophthalimide, octachlorodiphenyl dioxide, chlorinated diphenylamine, pentabromodiphenyl ether, tribromotrichlorodiphenyl ether, 2,4,6-tribromoaniline, pentabromotoluene or hexabromocyclododecane. Examples describe compositions comprising maleic anhydride-modified crystalline polypropylene, amino-silane treated glass fibres, antimony trioxide and hexachlorocyclopentadiene/cyclo-octa diene adduct together with (1) propylene/ethylene block copolymer and (2) stereoregular polypropylene.
Patent GB-1302430-A (GB)
IPC: H04R19/00
Filed: 1970-11-18
Abstract: 1302430 Electrostatic transducer PIONEER ELECTRONIC CORP 18 Nov 1970 [19 Nov 1969] 54887/70 Heading H4J A push-pull electrostatic loudspeaker comprises two electrets 212, 222 having like polarized opposing faces which are mounted on respective back electrodes 211, 221 and which sandwich therebetween conductively coated diaphragm 23. Audio signals from source 26 are applied to the electrodes via transformer 25 whereby during alternate half cycles the diaphragm is successively moved towards and away from one of the electrets due to the reinforcement and diminution of the normal static ray, positive charge on the adjacent face of the electret in dependence on the sign of the applied A.C.
Patent GB-1196820-A (GB)
Title: Sample Holder for a Nuclear Magnetic Resonance Instrument.
IPC: G01R33/31
Filed: 1968-11-21
Abstract: 1,196,820. Nuclear magnetic reconance spectrometers. NIHON DENSHI K.K. Nov. 21, 1968 [Nov. 25, 1967], No.55389/68. Heading G1N. [Also in Divisions B1-2] A sample holder for a nuclear magnetic resonance instrument comprises a first tube 3 for holding the sample to be analysed, a second tube 5 forming with tube 3 an annular jacket 8, a third tube 10 forming with tube 5 an annular jacket 12, and for each annular jacket inlet and outlet means at opposite ends for allowing the passage of heating or cooling fluid. In the embodiment shown, probe member 17 forms with tube 10 a third annular jacket 16, inlet and outlet holes 15a, 15b and 14a, 14b respectively being provided in tube 10 to allow flow of heat-exchanger fluid from jacket 12 into and out of jacket 16 outlet holes 14a, 14b being formed at constriction 13 in jacket 12. The unit housed in case 2 can be moved in and out of the gap between pole pieces la, 1b. Radio frequency coil 9 is wound around tube 5.
Patent GB-1400429-A (GB)
Title: Electric toasters
IPC: A47J37/08
Filed: 1971-11-30
Abstract: 1400429 Toasters BRITISH DOMESTIC APPLIANCES Ltd 29 Nov 1972 [30 Nov 1971] 55509/71 Heading A4D An electric toaster comprises two carriages 5 for supporting bread slices 4, rods 9 arranged to bring the bread slices to rest adjacent electric heating means (not shown), a switch 15 operable by movement of the carriages to a position beyond the position at which the bread slices are brought to rest and effective to complete an energizing circuit for the electric heating means, and means for automatically returning the carriage to its raised position when the bread slice has been toasted to a predetermined degree. As shown the switch 15 has contacts 16 and is operated by an arm 14 mounted on the carriages. An operating knob 7 is slidably mounted on a pillar 6 and is used to lower the carriages into the toaster casing 1. The carriages have fingers 5A and are restrained in their lowermost positions by an arm 10 having a notch (11), Fig.2 (not shown), which engages a latch 12. A device 18 responsive to the temperature of the bread slices operates an electromagnet 17 to release the arm 10 from the latch. A return spring 13 exerts an upward pressure on the carriage. In alternative forms the device 18 may be a photoelectric device responsive to the colour of the bread slice or a timing device. The arm 10 may, in addition, be arranged to be released manually.
Patent GB-1149960-A (GB)
Title: Multi-stage compressor
IPC: F04D29/58
Filed: 1966-12-13
Abstract: 1,149,960. Gas cooling installations. INGERSOLL-RAND CO. 13 Dec., 1966 [22 Dec., 1965], No. 55704/66. Heading F4S. [Also in Division F1] A multi-stage centrifugal compressor comprises a number of stages which, together with intercoolers, are totally enclosed within a common casing. Four stages 30, Fig. 1, are enclosed in a casing 10 having an end closure 20 which, as shown, may be hinged at 1 to the casing. Air or gas from an inlet 23<SP>1</SP> passes through a port 23 into a chamber in the end closure 20 located behind a wall 17 and then passes via a port 87 into the inlet duct 51, Fig. 2, of the first stage 30. After leaving the impeller 37, the air or gas passes via diffuser passages 43 and intercooler tubes 71 to a water separator comprising stainless steel crinkle mesh 86 which separates and condenses moisture entrained in the air or gas. The water is drained away through a pipe 190. The air or gas enters a further compartment in the end closure 20 via ports 89 surrounding the port 87, and then enters the second stage 30 through a further port 87. Finally after traversing all four stages, the air or gas passes via a port 25 to an outlet 25<SP>1</SP>. Coolant (e.g., water) for the intercoolers enters at 120, passes between the intercoolers via conduits 125 and leaves at 130. The four stages are driven through gearing by an electric motor 7 or an I.C. engine.
Patent GB-1361613-A (GB)
Title: Analogue to digital converters
IPC: G01R19/255
Filed: 1970-11-24
Abstract: 1361613 Analogue to digital converters SOLARTRON ELECTRONIC GROUP Ltd 23 Nov 1971 [24 Nov 1970] 55817/70 Heading G4H In a dual-ramp A/D converter which integrates a D.C. input signal subject to mains frequency interference for a whole number of cycles of the mains frequency, the integrator integrating both A.C. and D.C. over a fixed interval of that period but only A.C. during the remainder. In the arrangement of Fig. 1, a mains frequency signal, nominally 50 KHz drives Schmitt trigger 46, whose squarewave output is divided by bi-stable 48 to give a control pulse nominally 20 ms. equal to one mains frequency cycle. The leading edge zeroes counter 38 and after a delay by delay 50 sets bi-stable 28 to close switch 12 allowing integrator 14 to integrate the D.C. input plus its interfering A.C. mains frequency. When counter 38 fed from oscillator 34 is full, approximately 19 ms., bi-stable 41 sets to inhibit via AND gate 36 the pulses to counter 38 and closes switch 23 putting resistor 21 into parallel with capacitor 28. The integrator now integrates the A.C. signal only until the end of the control pulse from bi-stable 48. The trailing edge of the control pulse is inverted at 52 to reset bi-stable 28, and set bi-stable 30, replacing the input signal to the integrator by reference signal 24 of opposite polarity. Also bi-stable 41 resets to open switch 23 and revert the integrator to its original mode, so causing the integrator to integrate down to zero, during which time counter 38 counts clock pulses from oscillator 34. Upon the integrator reaching zero, comparator 32 resets bi-stable 13, so opening switch 26 and via OR gate 40 opens AND gate 36 to stop the counter whose output is decoded (56) and displayed (58).
Patent GB-1223345-A (GB)
Title: Improvements in and relating to gas-locked rotary valves
IPC: F16K5/02
Filed: 1968-11-26
Abstract: 1,223,345. Pocket wheel feeders for granular material. NIRO ATOMIZER A.B. 26 Nov. 1968 [30 Nov., 1967], No. 56139/68. Heading B8A. The housing 16 of a pocket wheel feeder and the pocket wheel 4 are tapered axially and the pocket wheel is axially adjustable on a shaft 5 to vary the clearance 18 between the pocket wheel and the housing. The shaft 5 is journalled at one side only of the pocket wheel in bearings 6, 7 and is driven by a motor 36 through a planetary gear. The desired clearance 18 is obtained by means of shims 30 which are placed on the shaft, abutting a shoulder 31, the pocket wheel being secured by a key-ring clamping member 17. The outlet opening 3 in the housing extends beyond the ends of the pocket wheel 4 to allow the discharge of any material which passes through the clearance 18.