baber/WOPTO huggingface dataset:
Patent GB-1389884-A (GB)
Title: High transmittance measuring device for measuring the intensity  of power laser pulses
IPC: H01S3/00
Filed: 1972-09-15
Abstract: 1389884 Semi-conductor devices C SATACENTRO STUDI APPLICAZIONI TECNOLOGIE AVANZATE 15 Sept 1972 [29 Jan 1972] 42958/72 Heading H1K A high transmittance device for measuring the intensity of laser pulses comprises an element of a crystalline material having insulating properties and being capable of non-linear optical absorption so that a plurality of photons are absorbed simultaneously to produce an electric charge which is measured. As shown, a KI crystal 1 is provided with electrodes 2 and is polarized by a high voltage source via a resistor R. When a laser beam passes through the crystal a small portion is absorbed and the charge produced by the simultaneous absorption of n photons (n = 4 for a ruby laser beam) results in a current which is applied to an amplifier via capacitor C to produce an output voltage proportional to the nth power of the laser beam intensity. The crystalline material used may be an insulator of a semiinsulator and should have a band gap greater than the energy of the laser photons. A mosaic of elements may be stacked in insulated relationship and individually biased so that the intensity of a beam at different points of its cross-section can be measured. Two such single element or mosaic devices may be utilized for investigating lasers one device being movably mounted inside the cavity and the other being fixed in the beam exit aperture.
Patent GB-1284889-A (GB)
Title: An electrical circuit arrangement for warning and/or indicating lamps in motor vehicles
IPC: B60Q11/00
Filed: 1969-08-28
Abstract: 1284889 Switching circuits for motor vehicles BAYERISCHE MOTOREN WERKE AG 28 Aug 1969 [2 Sept 1968] 42963/69 Heading H2H The lighting circuit of a motor vehicle includes a warning lamp the brightness of which depends on the position of the vehicle lighting switch. The lamp also serves to indicate if the vehicle lights have been left on after the ignition has been switched off. In the circuit shown, the ignition switch 1 has a positive input terminal 30 which may be connected to a parking light terminal P, a radio terminal R, an ignition terminal 15, or a starter contact 50. A parking switch 3 may energize either the left hand side and rear lights 9, 10 or the right hand side and rear lights 11, 12. The registration plate light 7 and dashboard light 8, and the vehicle headlights, are connected respectively to terminals 58K and 56 of a three-position lighting switch 2, a connection 15 from which is connected to other instruments 5 and to the selector switch 4 of an automatic transmission system. Indicating lamps I, II, A, N, R, P are connected from each position of the switch 4 to resistors 6, 6<SP>1</SP>. When the ignition is switched on, one of these indicating lamps is always lit but it will be dimmed when the lighting switch 2 is in an on position since the resistor 6<SP>1</SP> is then connected through terminal 58K to the positive side of the supply. If, when the ligths are being used, the ignition is switched off, the warning lamp, normally that corresponding to the park (P) position of the selector switch 4, remains on and is arranged to increase in brightness. This lamp may be of a higher power than the other indicating lamps. In the arrangement described, the headlights can only be energized when the ignition is switched on.
Patent GB-1008832-A (GB)
Title: Process for the purification of polyolefins
IPC: C08F6/02
Filed: 1964-10-21
Abstract: Polyolefins, e.g. polypropylene, obtained by using a catalyst comprising a transition metal compound in which the metal is in a valency state lower than normal, and an organometallic compound of Groups I, II or III of the Mendeleeff Periodic Table are purified by washing with an alkaline alcoholic solution in the presence of molecular oxygen or a substance capable of releasing oxygen, e.g. a peroxy compound. The alcoholic solution may be methanol containing sodium methylate.  The preferred catalyst is TiCl3+Al(C2H5)3.
Patent GB-1170824-A (GB)
Title: Rapid pump-down vacuum chambers incorporating cryopumps
IPC: H01J9/38
Filed: 1967-09-21
Abstract: 1,170,824. High vacuum pumps. 500 Inc. Sept.21, 1967 [Oct.27, 1966], No.43097/67. Heading F1N. A vacuum is produced rapidly in a working chamber 12 by opening a valve 20 to a cryopump 26 having a thermal mass 40,41 previously cooled to a temperature sufficiently low to allow the gases in the working chamber to condense thereon without causing the temperature of the thermal mass to rise above the maximum condensation temperature. The thermal mass 40, 41 is cooled by a refrigerator 45 operable before evacuation of the chamber 12 commences and accordingly of smaller capacity than a refrigerator required to operate only during actual evacuation. The thermal mass is preferably lead or copper plates but may be neon or high-pressure helium contained in a plurality of thin-walled stainless steel tubes (80, Fig. 5, not shown). If the thermal mass is in the plate form shown it may be cooled by liquid flowing in coils in thermal contact therewith. Refrigerator 45 had a highly cooled section 46 in thermal contact with a radiation shield 38. The shield 38 has a top plate 53 supported on inclined walls 54, the spaces therebetween affording communication to the cryopumping chamber 36. The space between the walls 35, 49 of the cryopump and radiation shield is insulated by particulate or foamed insulation or by being evacuated by a mechanical pump 42. A rough vacuum is produced in the working chamber prior to the opening of the valve 20 by a mechanical pump 15, and after operation of the cryopump 26 the residual gases are removed by a diffusion, ion or sublimation pump 18. A single cryopump 26, Fig.6 (not shown) may be connected to a number of working chambers each controlled by an individual valve (92, 93, 94).
Patent GB-1509975-A (GB)
Title: Recording apparatus coding circuit for an image signal and corresponding decoding circuit
IPC: H04N7/12
Filed: 1975-10-21
Abstract: 1509975 Television THOMSON-CSF 21 Oct 1975 [22 Oct 1974] 43230/75 Heading H4F A coding circuit for processing a television image signal before the recording thereof, comprises a clock 2, Fig. 1, of frequency f, where f is the frequency bandwidth of the image signal; means 3, synchronized by said clock, for generating brief sampling pulses of frequency f/2, whose instants of occurrence, relative to the start of the active line duration, are during one frame period out of two shifted by a period T = 1/f relative to their occurrence during the other frame periods; a sampling and holding device 5 having an input for receiving the image signal, and a control input for receiving said sampling pulses; a low-pass filter 6 having a cut-off frequency equal to f/2; means 13 for generating a burst signal formed by a train of sampling pulses in each horizontal blanking interval; and a mixer 19 receiving the output signal from said filter and the burst signals. The circuit may code an image signal directly from a camera, a sync. generator 7 being provided for supplying horizontal and vertical sync. signals both to said camera and to said mixer, said sync. generator having a synchronizing input coupled to clock 2 through a gating circuit 12 having a control input, and comprising means for delivering to said control input a pulse at half the frame frequency for blocking circuit 12 for this pulse so as to shift by T the image signal delivered by the camera for the duration of one frame period out of two. There is provided also a decoding circuit, Fig. 2, comprising two input channels 21, 22 for respectively receiving the signals from two pick-up units simultaneously reading recorded signals relative to two consecutive frames. Two sampling and holding devices 31, 32 are coupled respectively to said channels. A separator 28 extracts the burst signals included in the signal from channel 21. A generator 30, synchronized by a clock 27 in turn synchronized by the burst signals, delivers two series of sampling pulses of frequency f/2, shifted by T, respectively to control inputs of devices 31, 32. A common output channel including an amplifier 35 is coupled to a common output of devices 31, 32.
Patent GB-945657-A (GB)
Title: An improved adaptor to facilitate the mounting of articles on supporting members
Inventor: LIU NGAN SIEN
IPC: A47F7/00
Filed: 1962-11-15
Abstract: 945,657. Releasable fastenings. LUXIM INDUSTRIES (PLASTIC) H. K. Ltd. Nov. 15, 1962, No. 43247/62. Heading E2B. [Also in Division A4] An article, such as a decorative hollow glass ball 16 or an artificial flower, is releasably supported by an adapter of resilient plastic having a socket 11 for engagement by a plug or pin element 17 on a supporting member and an arm or arms 12, 13 extending from the socket 11 and engaging in the article 16 to be supported. A gap 19 between the arms 12, 13 is treated in Fig. 2 within the article 16 but may alternatively be located exteriorly. In one embodiment incorporating a single D-like arm the gap is located adjacent the socket 11.
Patent GB-1061298-A (GB)
Title: Improvements in and relating to the detection of defects in transparent or translucent containers
IPC: G01N21/90
Filed: 1963-11-05
Abstract: 1,061,298. Detecting flows in containers photo-electrically. OWENS-ILLINOIS Inc. Nov.5, 1963 [Oct. 21, 1963], No. 43562/63. Heading G1A. In an arrangement for detecting faults in hollow containers of transparent or translucent material and for rejecting those found to be defective, the containers (bottles) which are successively fed to a test position by a star wheel are rotated during testing, a beam of light is focused on or in the wall of the container, and a wide area sensing device is provided together with an apertured block of "micarta" (Registered Trade Mark) which provides a plurality of paths by which radiant energy reflected by a fault may pass to the sensing device. The wide area sensing device may comprise a group of parallel connected silicon cells and the lines of the paths are arranged to intersect at the focal point of the beam in the wall of the container. The test position may have two such arrangements applying light from a filament lamp at 45 degrees to a horizontal plane and 45 degrees to a vertical plane respectively, a mask being provided to prevent mutual interference.
Patent GB-1007436-A (GB)
Title: Improved thermoelectric cooler unit
Inventor: THORNTON JOHN
IPC: H01L35/08
Filed: 1960-12-22
Abstract: 1,007,436. Thermo-electric devices. DE HAVILLAND AIRCRAFT CO. Ltd. Nov. 22, 1961 [Dec. 22, 1960], No. 44016/60. Heading H1K. A thermo-electric cooler unit consists of a plurality of assemblies in series each containing at least one pair of thermo-electrically opposite elements, the number of pairs of elements per assembly increasing in the direction away from the cooled end. In the exploded view shown in the Figure, the first assembly comprises P-type semi-conductor elements 22, 26 and N-type elements 20, 24 mounted on metallic sectors 32, 34, 36, connections being completed between 20, 22 and 24, 26 respectively by the diametrically split metallic disc 28, 30. The second assembly consists of P-type elements 40, 44, 48, 52 and N-type elements 38, 42, 46, 50, connections to them being completed by sectors 53, 58, 54. Connections between assemblies are effected over sectors 60, 62 and 32, 34. The two assemblies are electrically insulated but thermally connected by the thin disc 18. With + and - of the electrical source connected to sectors 70, 72 of the mounting for the second assembly it is seen that the current flows leftwardly through all the N-type elements and rightwardly through all the P-type elements so that heat flow occurs rightwardly throughout the assemblies. The increased number of elements in the second assembly compensates for heat developed in the ohmic parts of'the circuit. Since the assembly at the cold end may be small, the arrangement is suitable for cooling bodies the accessible parts of which are very small. Specification 978,332 is referred to.
Patent GB-1246912-A (GB)
Title: Dragging device particularly suited for use in combination with other agricultural implements
Inventor: RUMPT ADRIANUS JACOB VAN
IPC: A01B31/00
Filed: 1969-09-08
Abstract: 1,246,912. Dragging device. VAN RUMPT N.V. 8 Sept., 1969 [9 Sept., 1968], No. 44214/ 69. Heading A1B. A dragging device comprises one or more rows of spacedly arranged drag feet 4 which are substantially rigid in at least the vertical direction and interconnected by a supporting structure 1, 2 and 3. The dragging feet may be arranged in two or more rows, and staggered so that the feet cover the whole width of the device. The feet may have pointed leading edges and may be tilted so that the leading edges are above the level of the trailing edges. In an embodiment, Fig. 3 (not shown) the feet are removably attached to the supporting beams and are adjustable both vertically and longitudinally of the length of the beam. In a further embodiment the feet are formed from a rectangular plate with the front corners turned up, the two halves of the front edge being welded together to form a point. Foliage spreaders may be attached to the noses of the drag feet which are formed from a rectangular plate, the corners at the front end of which are bent upwards and welded together.
Patent GB-1190733-A (GB)
Title: Improvements in and relating to Surgical Swabs
Inventor: LORD PETER HERENT
IPC: A61B5/06
Filed: 1966-04-16
Abstract: 1,190,733. Surgical swabs. JOHNSON & JOHNSON. 12 July, 1967 [16 April, 1966; 5 Oct., 1966], Nos. 16773/66 and 44472/66. Heading A5R. [Also in Division C3] A surgical swab is made of a foamed synthetic plastics material and incorporates a material which is detectable by X-rays and/or an electro-magnetic field. In particular the swab may comprise foamed polyvinyl chloride, polystyrene, or polyurethane and the detectable material may comprise a metallic ribbon, finely divided metal particles or a synthetic plastic thread, filament, or a disc-shaped or squareshaped member incorporating an X-ray opaque substance such as barium sulphate. Suitable metals comprise barium, iron or iron oxide, strontium, thorium, lead, and tungsten. The detectable material may be incorporated in the centre of a two or three layered swab. The swab may be of coloured material and the X-ray opaque thread may have a sinuous outline.
Patent GB-1214564-A (GB)
Title: Rotary regenerator matrices
IPC: F28D19/04
Filed: 1968-09-19
Abstract: 1,214,564. Rotary thermal regenerators. GENERAL MOTORS CORP. 19 Sept., 1968 [9 Oct., 1967], No. 44577/68. Heading F4K. The subject matter is the same as that disclosed in 1,214,563, but the claims relate to the arrangement of circumferentially extending keepers to maintain the heat transfer material in alignment. Reference has been directed by the Comptroller to Specification 1,118,893.
Patent GB-1196149-A (GB)
Title: Improvements in or relating to Semiconductor Devices
IPC: H01L23/485
Filed: 1967-10-02
Abstract: 1,196,149. Etching. INTERNATIONAL BUSINESS MACHINES CORP. 2 Oct., 1967 [10 Oct., 1966], No. 44705/67. Heading B6J. [Also in Divisions C1 C7 and H1] An SiO 2  layer 50 is formed on Si substrate 51, which contains a PN junction extending to its surface, then Si nitride layer 52 is deposited over the SiO 2 . A photo-resist 54 is applied over the layer 52 and apertures 53a are formed in it. Hydrofluoric acid or R.F. sputtering is then used through the apertures 53a to etch "windows" 53b through layers 52 and 50. Where R.F. sputtering is used some of the SiO 2  layer 50 is left at the conclusion of sputtering and is removed by use of an etchant.
Patent GB-1480261-A (GB)
Title: Dry scrubbing tar ladened reduction cell off gases to remove fluorides
IPC: B01D53/68
Filed: 1974-10-16
Abstract: 1480261 Removing fluoride and carbonaceous matter from gases KAISER ALUMINUM & CHEMICAL CORP 16 Oct 1974 [24 Oct 1973] 44876/74 Heading C1A Gaseous fluorides and condensable carbonaceous matter are removed from a gaseous stream by introducing pulverulent alumina into the stream so as to cause at least part of the carbonaceous matter to condense on the alumina, directing the alumina-containing gaseous stream through a foraminous plate into a chamber which contains a turbulent mass of pulverulent alumina and subsequently removing all particulate matter from the gas stream. The process is particularly applicable to the treatment of the off-gases from an aluminium reduction cell having a horizontal stud Soderberg anode. In a preferred embodiment the off-gases from the reduction cells are passed through a conduit 14 wherein alumina is dispersed into the stream from hopper 19. The mixture is directed upwardly through the dispersing foraminous plate 12, through the turbulent mass of pulverulent alumina maintained above the plate and then through the filter bags 13 for particulate removal. The gas is then vented through conduit 21 to the atmosphere or other treatment facilities. Periodically the filter bags are agitated to remove build-up of particles. Alumina is discharged from the chamber 11 through conduit 20. All of the alumina discharge may be fed to the reduction cell but may be recycled to the gaseous stream in conduit 14. Tar coated alumina discharged from the reactor may be passed through a combustion chamber to burn off carbonaceous contaminants before passage to the reduction cell.
Patent GB-1166275-A (GB)
Title: A Controlled Cooling Process for Solidifying Metal Castings, and an Apparatus for Performing the Process.
Inventor: COURCIER PHILIPPE
IPC: B22D18/06
Filed: 1966-10-07
Abstract: 1,166,275. Casting processes; cooling moulds. COMPAGNIE POUR L'ETUDE ET LA REALISATION DE COMBUSTIBLES ATOMIQUES. 7 Oct., 1966 [25 Oct., 1965], No. 44999/66. Heading B3F. Uranium alloy containing 1À1% molybdenum, for nuclear fuel, is poured into moulds 4 in a vacuum or low pressure in a furnace 1 and then a fluid inert to the castings, e.g. Ar or He, is allowed in to fill the furnace and flow over and cool the moulds before being removed, cooled in a cooler 22 and reintroduced into the furnace at a controlled rate. The cooling is said to produce a fine grain structure. The metal is melted in an induction-heated crucible 2 in a vacuum or low pressure in a tubular furnace 1 and flows through a distributer 3 into the moulds 4, e.g. for forming tubes in cavities between coaxial graphite tubes 4a, 4b. Soon after pouring, Ar or He for cooling the moulds and castings enters from a line 12 and passes up through the inner tubes 4a to the distributer 3 from which it passes down through tubes 16 to cool the moulds further and pass down an axial tube 18. The fluid may flow downward through the inner tubes 4a.
Patent GB-1086358-A (GB)
Title: Neutralization composition and process for preparing the same
IPC: C08F6/02
Filed: 1964-11-04
Abstract: In the purification of an alcohol-terminated organo-metal catalyst residue-containing-polymerizate of an alpha-olefin polymer in a hydrocarbon solvent or diluent and wherein the polymer has been separated from the hydrocarbon, alcohol, and any acid, if present, by centrifuging, the separated liquid is purified by treatment with a composition comprising from 2 to 10% by weight of an alkali metal alkoxide, and from 98 to 90% by weight of a mixture containing from 30 to 70% by weight of an alcohol having from 1 to 10 carbon atoms per molecule and from 70 to 30% by weight of an aliphatic hydrocarbon having 4 to 10 carbon atoms per molecule. In an example, polypropylene prepared with a titanium chloride and aluminium alkyl catalyst was slurried with a mixture of heptane, isopropanol and 0.1% of anhydrous hydrochloric acid and the liquid remaining after separation of polymer treated with a composition consisting of sodium isopropoxide, heptane and isopropanol. The Specification includes a flow diagram of a continuous process for preparing, utilizing, and recovering the composition.ALSO:A composition comprising from 2 to 10% by weight of an alkali metal alkoxide, and from 98 to 90% by weight of a mixture containing from 30 to 70% by weight of an alcohol having from 1 to 10 carbon atoms per molecule and hydrocarbon having 4 to 10 carbon atoms per molecule is made by (1) reacting under an inert atmosphere with agitation a mixture of an excess of the alcohol and the hydrocarbon with a molten alkali metal at a temperature at least above the melting point of the alkali metal or (2) reacting as in (1) the alkali metal and alcohol and subsequently adding the hydrocarbon. The preferred alkali metal is sodium, isopropanol is the preferred alcohol, and n-heptane or n-hexane the preferred hydrocarbons.  The Specification includes a flow diagram of a continuous process for preparing, utilizing, and recovering the composition.  The composition is used for neutralization.
Patent GB-1130644-A (GB)
Title: Improvements relating to multiple-stage high-voltage impulse generators
Inventor: BISHOP MALCOLM JOHN
IPC: H03K3/537
Filed: 1966-10-08
Abstract: 1,130,644. Pulse generating circuits. FERRANTI Ltd. 5 Oct., 1967 [8 Oct., 1966], No. 45064/66. Heading H3P. A high-voltage impulse generator comprises a plurality of capacitors, charged in parallel and discharged in series via a plurality of breakdown devices, each breakdown device comprising a series array of spark gaps and means to apply a trigger pulse to at least one of said gaps in each series array. Fig. 1 (not shown) relates to a multi-stage impulse generator in which a plurality of capacitors are charged in parallel via resistors and discharged in series under control of triggered spark gap arrays, one of which is shown in Fig. 2. Each spark gap array comprises electrodes cl . . . e(r+ 1) bridged by a potential divider Rd1 ... Rdr and having capacitors Cd2 . . . Cdr used to couple a trigger pulse from T3 to all the electrodes except the first and last. Seventeen electrodes e may be used in each array separated by gaps of 0À2 inch. Fig. 3 shows a circuit for generating a trigger pulse for one of the arrays shown in Fig. 2. When a trigger pulse is received at Vt, a hydrogen thyratron (not shown) or spark gap AG1 breaks down, discharging capacitor Ct through the upper portion of an auto-transformer P1 thus producing a high voltage pulse across the secondary of P1 which is fed to terminal T3 in Fig. 2. The output of each trigger pulse generator A1 may be used to trigger the subsequent trigger pulse generators in cascade. Alternatively all the trigger pulse generators A1 may be triggered simultaneously or delay lines may be incorporated between each trigger pulse generator and its associated main array so as to obtain synchronous triggering. The multi-stage impulse generator (Fig. 1, not shown) may comprise ten stages and provide an output adjustable from 300 kv.-2 Mv. merely by variation of the charging voltage from 30-200 kv. without adjustment of spark gaps.
Patent GB-450925-A (GB)
Abstract: 450,925. Discharge rectifiers. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN, Emmasingel, Eindhoven, Holland. Feb. 24, 1936, No. 5564. Convention date, May 23, 1935. [Class 39 (i)] In a grid-controlled gas- or vapour - filled rectifier which comprises an activated incandescent cathode 4 and wherein the discharge path between the cathode and the anode 3 has a contraction surrounded by a tubular grid 11, a bellshaped extension 13 of the grid at least partly surrounds the incandescent cathode and the grid as a whole is supported by the cathode supports. As shown, the grid 11 is of cruciform crosssection and has a funnelshaped extension 9 facing the anode, the shape of the funnel being adapted to an equipotential surface of the anode field. A cylindrical portion 10 separates the anode and cathode spaces. The grid support 15 is clamped about insulating sleeves 16 surrounding the cathode leads. The distance of the grid from the anode is less than the mean free path of an electron in the filling at the working pressure, which may be for example mercury saturated at À01 mm.