baber/WOPTO huggingface dataset:
Patent GB-1075092-A (GB)
Title: Semiconductor devices and circuits
IPC: H03F3/191
Filed: 1963-12-10
Abstract: 1,075,092. Circuits employing insulated-gate field-effect transistors. RADIO CORPORATION OF AMERICA. Dec. 10, 1963 [Dec. 17, 1962], No. 48831/63. Heading H3T. [Also in Division H1] An insulated-gate field-effect transistor has the gate arranged closer to one electrode (the source) than to the other (the drain) and has a terminal connected to the substrate which is of a different conductivity type and/or of different resistivity from that of the material of the source and drain electrodes and channel interconnecting them. The device thus behaves as though a semi-conductor diode was connected between the substrate terminal and each of the source and drain electrodes; by forwardly biasing these diodes, gain-control of the transistor used as an amplifier may be effected, while increasing the reverse bias voltage applied to these diodes in a high-frequency amplifier reduces the inter-electrode capacitance and increases the high-frequency response of the amplifier. By virtue of the off-setting of the gate towards the source electrode the draingate capacitance and Miller effect are reduced; nevertheless in high-frequency applications, neutralization may be provided by a capacitor connected between a point in the drain circuit and the grid electrode, Figs. 6, 7, 8 and 9 (not shown). This offsetting also reduces degeneration due to resistance common to the sourcegrid and source-drain circuit and also permits increased speed of operation. The transistor may be employed as an untuned amplifier, Fig. 5 (not shown), or a tuned high-frequency amplifier, Fig. 6 (not shown). In Fig. 7 (not shown) a tuned high-frequency amplifier comprises two parallel-connected transistors with different biases applied to their grid electrodes whereby the combined transconductance of the two transistor exhibits considerably increased linearity as a function of grid-electrode voltage. In Figs. 8 and 9 (not shown), A.G.C. in a radio receiver is applied to the grid electrode of the first I.F. field-effect transistor amplifier and also to the substrate of a radio-frequency stage to produce conduction between the source and drain electrodes and the substrate to load the circuit and thus reduce its gain.
Patent GB-1169163-A (GB)
Title: Improvements in or relating to the Treatment of Combustion Gases
Inventor: WOOTTON WILLIAM ROBERT
IPC: B01D47/06
Filed: 1965-11-19
Abstract: 1,169,163. Separating sulphur compounds from combustion gas. BABCOCK & WILCOX Ltd. 21 Nov., 1966 [19 Nov., 1965], No. 49154/65. Heading B1L. Sulphur compounds are removed from combustion gases by cooling the gases below their dewpoint to form droplets or nuclei of water with which the sulphur in the gases becomes associated. As shown, flue gases from line 16 are cooled in vertical ducts 4 of heat exchanger 1, so that precipitated water droplets absorb the sulphur compounds present therein, and then pass to chamber 3 having drain 12 wherein further droplets are formed from spray 10 and combined with sulphur, these droplets being removed by electrostatic precipitator 11. The purified gases pass via pipe 9 to duct 5 of heat exchanger 2 where they are reheated before passing out by chamber 13 and duct 15 to atmosphere. Heat exchange fluid is circulated between jackets 6 and 7 by pump 8. The vertical ducts 4 and 5 are shaped with slowly diverging and sharply converging sections to produce periodic pressure fluctuations in the gases; this assists condensation of moisture therein and the formation of SO 3  from SO 2 , the former associating with water more readily. In a modification, the flow path through heat exchanger 1 may be a labyrinthine passage defined by baffles.
Patent GB-1199880-A (GB)
Title: Improvements in or relating to Sludge Centrifuges
IPC: B04B1/14
Filed: 1968-10-17
Abstract: 1,199,880. Centrifugal separators. ALFALAVAL A.B. 17 Oct., 1968 [17 Oct., 1967], No. 49212/68. Addition to 1,099,618. Heading B2P. In a modification of the centrifuge described in the patent specification, Fig. 1, the means 18, 19 for intermittently generating a change in the pressure or flow in the indicating pipe 13 is independently connected to a chamber 14 to which the indicating pipe 13 and the duct 16 are both connected. In operation, a gas is supplied through the duct 16 at a sufficient pressure, indicated by the sensing means 17, to prevent the liquid being pumped by the paring disc 15 through the duct in the reverse direction. When sludge clogs the opening of the pipe 13 the liquid, intermittently supplied by means 19 through the duct 18, which opens within, or radially inwardly of, the liquid in the chamber 14, causes a radially inwards displacement of the liquid level in the chamber 14 and the pressure in the pipe 13 and in the duct 16 rises. The rise in pressure in the duct 16 is indicated by the sensing means 17 and when it reaches a predetermined value a sludge discharge is effected manually or automatically. In another modification, Fig. 2, the centrifuge rotor operates completely filled with liquid. Air is continuously supplied, through a duct 16 and at a pressure indicated by means 17, to a chamber 20 which is completely filled with liquid. A duct 21, in which means 22 for generating pressure or flow changes is inserted, and the duct 12, for the discharge of separated liquid, are hermetically connected to the centrifuge rotor by means of seals 23, 24. In operation, the means 22, e.g. a periodically opening valve, intermittently lets liquid and air out of the chamber 20. When the opening of the pipe 13 in the sludge space is clogged, a reduced liquid flow occurs in the pipe 13 and the duct 21 when the valve 22 opens. The means 17 then indicates a pressure reduction and when this reduction is sufficiently large sludge discharge is effected.
Patent GB-1242882-A (GB)
Title: Therapeutic compositions containing hydrazides
IPC: A61K33/06
Filed: 1968-10-17
Abstract: 1,242,882. Anti-inflammatory compositions. BYK-GULDEN LOMBERG CHEMISCHE FABRIK G.m.b.H. 17 Oct., 1968 [18 Oct., 1967], No. 49229/68. Heading A5B. Pharmaceutical compositions, having antiinflammatory activity and particularly useful for the treatment of rheumatic diseases, comprise a pharmaceutically acceptable carrier and a salt of a substituted malonic acid hydrazide that has been obtained by the process claimed in Specification 1,164,039, the salt having the general formula wherein R is a straight chain, branched or cyclic alkyl or alkenyl radical having up to 10 carbon atoms and optionally interrupted by an oxygen, sulphur or imino group, an aryl or aralkyl wherein the aromatic ring is optionally substituted by halogen, hydroxy, alkoxy, nitro, amino, or dialkylamino, R 1  is hydrogen or any of the radicals defined for R, Ar is phenyl which is optionally substituted by halogen, alkyl and/or alkoxy groups of up to 3  carbon atoms inclusive or hydroxy and X is a metal other than sodium, n being the valency of the metal, or X is the ammonium radical or a quarternary ammonium radical in which at least one of the hydrogen atoms of the ammonium radical is replaced by optionally substituted alkyl or aralkyl. The compositions may be in the form of a dragee, tablet, syrup, ointment, suppository or injection solution and may include' another pharmacodynamically active substance such as fever-reducing substances, anti-allergic substances and inflammation-inhibiting agents such as prednisolone.
Patent GB-1236776-A (GB)
Title: Television telephone system
IPC: H04N7/15
Filed: 1968-10-18
Abstract: 1,236,776. Television telephone. MATSUSHITA ELECTRIC INDUSTRIAL CO. Ltd. 18 Oct., 1968 [24 Oct., 1967; 28 Dec., 1967 (2)], No. 49634/68. Heading H4K. In a television telephone system the video signals are transmitted as frequency modulation of a carrier of a frequency just above a frequency equal to the sum of the highest video frequency to be transmitted plus the maximum deviation of modulated frequency. To provide directional switching of the video signal the audio signal from the telephone transmitter of the speaking subscriber is detected and used to switch the video receiver at the speaking subscriber's station to reproduce the speaking subscriber's picture and also causes the transmission of a 30 kHz tone burst which is arranged to switch the other subscriber's video receiver to reproduce the picture of the talker. The transmission system requires line repeater amplifiers and in a two-wire line the input and output connections of the repeater amplifiers are interchanged if the 30kz tone is present only at the amplifier output and not on the input. The subscribers may be connected in a conference circuit, switching of the video signals being carried out by the 30 kHz signal from the talking subscriber. A system is described where video transmission, video reception, and audio communication, take place over three respective line pairs, a conference circuit in this instance involving switching at the exchange, in accordance with the 30 kHz tone signal, to connect the video transmit line of the talker to the video receive lines of the remaining subscribers. For transmission of documents &c. they may be placed on a rest 59, Fig. 10, and viewed by the camera of the subset via a mirror 57. The mirror during normal use being stored in the set housing, and withdrawal from the housing, to provide document transmission, causing reversal of the scan direction of the camera tube, and change of focus of the optical system.
Patent GB-1510525-A (GB)
Title: Detector for the presence of a disposable syringe cartridge
IPC: A61M5/148
Filed: 1975-06-11
Abstract: 1510525 Arrangement for ensuring the correct mounting of pumps for medical use IVAC CORP 11 June 1975 [28 Feb 1975] 49803/77 Divided out of 1510523 Heading F1A When the pumping cylinder 22 of a disposable syringe (See U.K. Specification 1510523) used in apparatus for the intravenous administration of liquids is incorrectly mounted, the light from a fixed source (91) is intercepted by an opaque or reflective surface 89 on the inlet or outlet nipple 51 of the cylinder and thereby prevented from reaching a photo-sensor (92 or 192).
Patent GB-1529729-A (GB)
Title: Flexible pipe coupling
IPC: F16L55/00
Filed: 1975-12-04
Abstract: 1529729 Pipe couplings GREER HYDRAULICS Inc 4 Dec 1975 [9 Dec 1974] 49868/75 Heading F2G A coupling between pipes 19, 47 for preventing transmission of vibrations therebetween and allowing for axial misalignment comprises a fitting 11 on the pipe 19 having a base portion 12 and a reduced diameter stem portion 13, this being surrounded by a cup-shaped rubber member 21 and a sleeve 29 with an opening 32 through which the stem portion 13 passes with clearance, and with the sleeve being screwed to a fitting 41 on the pipe 47 to compress the rubber member 21 and prevent metal-to-metal contact between the pipes and fittings. In an alternative embodiment the member 21 is moulded with the portion 12 which is provided with slots filled by the material of the member 21.
Patent GB-1069672-A (GB)
Title: High frequency electron tube apparatus
IPC: H01J3/02
Filed: 1963-12-19
Abstract: 1,069,672. Travelling wave tubes; klystrons. VARIAN ASSOCIATES. Dec. 19, 1963 [Jan. 22, 1963], No. 50256/63. Heading H1D. An electron gun for a high-power discharge tube, e.g. a travelling-wave tube or a klystron, comprises a cathode emitter 22 for generating an electron beam to pass through an apertured anode structure 24, the area of the aperture being smaller than the area of the emissive surface 22, wherein the cathode emitter and the anode aperture are immersed in a converging magnetic field and a magnetic member 37 in the form of a hollow cylindrical member surrounds the cathode emitter and perturbs the magnetic field in the vicinity of the cathode emitter so as to increase the rate of convergence of the magnetic field and so as to cause the magnetic field lines substantially to follow the electric field lines between the cathode and anode. The anode structure comprises a modulating anode 20 having a longitudinally extending tube 29 and a main anode 25. A focusing electrode 34 following the contours of the concave emitter is located between the emitter and the magnetic member; coils 41 having a long heatconducting path spacing the focusing electrode from the shim. The electron beam is focused down the length of the discharge tube by a main magnetic field set up between two polepieces, one of which, 17, is spaced from and surrounds the shim.
Patent GB-1444590-A (GB)
Title: Corona generation apparatus
IPC: B01J19/08
Filed: 1973-07-19
Abstract: 1444590 Corona discharge apparatus PURIFICATION SCIENCES Inc 19 July 1973 [17 Aug 1972] 50460/75 Divided out of 1444588 Heading H5H The subject-matter of this Specification is substantially identical to that of Specifications 1,444,588 and 1,444,589 except that the main claim relates to a corona discharge apparatus in which electrodes defining discharge cell walls are maintained parallel by a means 278 resisting excess inside pressures and a means 450 within the cell resisting excess outside pressures. The description additionally states that the outside supporting means 278 maintains the cells spaced apart and distributes uniformly the pressures in excess of ambient arising from the fluid in the cell.
Patent GB-505722-A (GB)
Abstract: 505,722. Insecticides and. fungicides. ' BARY, P., and CORNU, C. May 13, 1938, No. 14288. Convention date, Dec. 17, 1937. [Class 81 (i)] [Also in Group III] Colloidal suspensions, for use as insecticides and fungicides, are obtained by the mutual reaction of two very dilute solutions of appropriate compounds immediately prior to discharge through a dispersion spray. Examples refer to the preparation of copper hydrate from copper sulphate and sodium carbonate; sulphur from a mixture of sodium sulphide and sulphite treated with hydrochloric acid: and lead arsenate from ammonium arsenate and lead acetate. Reference is also made to suspensions of ferric hydrate, copper sulphide or nicotine sulphide, and if desired, more than one compound may be prepared simultaneously, e.g. a mixture of sulphur and copper oxide for treating fungi and mildew. Wetting and adhesive agents may be added, and the rate of flocculation may be controlled by the addition of neutral salts, e.g. sodium or calcium chlorides. Reference has been directed by the Comptroller to Specification 408,891, [Group III].
Patent GB-1119790-A (GB)
Title: Method and apparatus for the automatic control of a continuous distillation process
IPC: B01D3/42
Filed: 1965-11-29
Abstract: 1,119,790. Control of fractionating columns. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. 29 Nov., 1965 [30 Nov., 1964], No. 50592/65. Heading B1B. A distillation column 1 is automatically controlled to obtain top and bottom products of constant composition by (a) controlling the composition of the bottom product by adjusting the feed stream flow rate in proportion to a signal derived from a composition measuring meter 20 and (b) maintaining liquid levels in the top accumulator 7 and in the base of the column I between desired levels by level gauges 26 and 22. A controller 30 maintains the ratio between the top product flow and the reflux flow at a desired level. Alternatively, the top product flow may be kept at an independent value and then the reflux flow is controlled only by the level gauge 26 (Fig. 3, not shown). The heat flow to the reboiler is controlled by a mater 24 and controller 25. If there is a change in intake mixture the composition of the top product is measured by meter 34 (Fig. 4, not shown) and a signal passes to the heat flow controller 25 and also to the reflux controller 27 which also has a signal fed to it from the level gauge. If the bottom product flow is kept at an independent rate then the heat flow to the reboiler is adjusted by a signal derived from a level gauge 22, Fig. 6, not shown. The modification of Fig. 7, not shown, ensures that the contribution from the feed stream to the vapour flow in the upper part of the column is kept at a desired level by means of a flow meter 40 and controller 43 adjusting the preheater 4.
Patent GB-1093167-A (GB)
Title: Improvements in or relating to grinding machines
Inventor: LAMBERT KEITH TREVOR
IPC: B24B27/04
Filed: 1965-11-29
Abstract: 1,093,167. Grinding. JAMES A. JOBLING & CO. Ltd. Nov. 14, 1966 [Nov. 29, 1965], No. 50656/65. Heading B3D. A machine for grinding the ends of elongated articles, such as glass tubes 1, comprises a grinding member 13 supported for swinging with its grinding face 13A disposed in an upright plane, means for imparting swinging motion to the member, and means for supporting the article such that a surface of the article can be moved into said plane to be ground by the grinding member during its swinging motion. The article is supported on rollers 4 carried by brackets 3 from a bed 2 from which extends a pair of yoke-like brackets 7. The upper end of the brackets 7 support a shaft 8 carrying an arm 9, the lower end of which rotatably supports a shaft 12, one end of which carries the grinding member 13, and the other end of which has a chain or belt connection 17 to a motor 6 coaxial with the shaft 8. The arm 9 can be swung to-and-fro about the axis of shaft 8 by an air cylinder while the grinding member is rotated by the motor, the article 1 being manually rotated on the rollers 4 and urged into engagement with the grinding face 13A. The grinding member may be of silicone carbide, in which case water is supplied during grinding, or cast iron and supplied with a silicone carbide slurry. The rollers 4 support the article to one side of the vertical plane containing the axis of shaft 8. If the article is other than round, round clamps may be mounted on it for engagement with the rollers. The article may be fed to the grinding member by a mechanical feed device or a jig if the article has the shape of a T- or cross-piece.
Patent GB-1075216-A (GB)
Title: Nickel-chromium alloys
Inventor: RICHARDS EDWARD GORDON
IPC: C22C19/05
Filed: 1963-12-23
Abstract: A nickel base alloy consists of the following components:-<TABS:1075216/C6-C7/1> <TABS:1075216/C6-C7/2> such that Nb + 0.5 Ta + V = 2-4, Ti + Al + Nb + 0.5 Ta + V = 6.3 - 8.5 and V/Nb + 0.5 Ta does not exceed 1.5, .B.0.001 - 0.01% .Zr.0.01 - 0.1% the balance, apart from impurities and residual deoxidants, being nickel. Impurities mentioned are:- .Fe.up to 5% .Si.up to 1% .Mn.up to 1% but the total amount of impurities and residual deoxidants should preferably not exceed 2%.  The alloys may be solution treated at 900-1150 DEG C. quenched in oil or air (in the case of sheet, water may be used) and aged at 650-900 DEG C.
Patent GB-991535-A (GB)
Title: Jig with jig compartments symmetrically arranged on both sides of a central compressed air chamber
Inventor: MAYER FRIEDRICH WILHELM
IPC: B03B5/20
Filed: 1963-12-24
Abstract: 991,535. Jigs. WESTFALIA DINNENDAHL GROPPEL A.G. Dec. 24, 1963, No. 50972/63. Heading B2H. A jig of the type in which water is caused to oscillate through screens 5 by the action of compressed air, comprises a tank 1 containing a compressed air chamber 2 with the screen 5 arranged symmetrically on either side, the chamber 2 having a narrow upper part with vertical walls 3 and a lower part which widens going downwardly, the lower edges of its walls being formed by streamlined hollow members 8. These members supply water through manually adjustable valves 9, and a splitter plate 12 effectively divides the tank into compartments 4, the supply of water to which can be varied individually to suit the amount of material on each screen, e.g. in response to the pressure below each screen. The chamber may also be divided by transverse partitions, so that the supply of water and compressed air can be varied along the length of the tank. The width of the upper chamber part 3 should be at most one-third, and preferably one-eighth of the total width of the screens.
Patent GB-1416605-A (GB)
Title: Injection mouldable thermosettable composition and process
IPC: B29B15/00
Filed: 1973-11-05
Abstract: 1416605 Pellets for moulding GENERAL ELECTRIC CO 5 Nov 1973 [6 Nov 1972] 51255/73 Heading B5A [Also in Division C3] A pelletized, heat fusible, thermosettable, injection mouldable composition comprising a thermosettable phenol-aldehyde resin and a filler is prepared by feeding the composition to a screw extruder, advancing the composition through the extruder at a temperature of less than 290‹ F. for a sufficient time to render the resin molten, extruding the composition through a die orifice and comminuting the extrudate into pellets of at least <SP>1</SP>/ 16  inch in diameter and mixing the pellets with a minor amount of a metallic salt of a C 8 -C 20  fatty acid. The extrudate may be rapidly cooled as it is comminuted into pellets. The feed material may be premixed or the ingredients may be fed separately to the extruder either at room temperature or at an elevated temperature. The pellets generally have a bulk factor of less than 2À3. The metal salt may form a coating on the pellets. Suitable metal salts are the Li, Na, K, Mg, Ca, Ba, Zn, Cd and Al salts of palmitic, stearic, lauric, oleic, sebacic, ricinoleic and palmi. toleic acids. Suitable fillers include asbestos fibres, wood flour, cotton flock, cellulose flock, wool flock, aluminium silicate, calcium carbonate, talcs and glass fibres. Other additives such as lime and stearic acid may also be used. In Example I pellets <SP>1</SP>/ 8  inch diameter and <SP>1</SP>/ 8  inch long prepared as above from a powdered phenol-formaldehyde novolac resin, hexamethylenetetramine as crosslinking agent, asbestos fibres and wood flour are blended with zinc stearate and subsequently injection moulded.
Patent GB-1420483-A (GB)
Title: Carbon-coated articles and method of making same
IPC: F16J15/34
Filed: 1973-11-06
Abstract: 1420483 Carbon-coated articles GULF OIL CORP 6 Nov 1973 [5 Feb 1973] 51495/73 Heading C1A An article comprises a substrate having a coating which comprises a wear-resistant layer at least 0À001 inch in thickness containing pyrolytic carbon plus an additive carbideforming element (preferably silicon) which is present in carbide form in said layer in a proportion of at least 25 vol. per cent and not more than 80 vol. per cent expressed as the carbide, and a surface layer exterior of said wear resistant layer comprising pyrolytic carbon having a density of at least 1À7 g./cm.<SP>3</SP>, and a region bordering said wear-resistant layer and said surface layer, which border region contains said additive carbide present in an average proportion of at least one-half the proportion thereof in said wear-resistant layer and distributed in such a manner than the coating is free of any interface which might cause the wearresistant layer to crack or become unbonded. The coating may also comprise a layer of pyrolitic carbon interior to the wear-resistant layer, with a similar border region between the wear-resistant layer and the inner carbon layer. The coating may be produced by sequential deposition at a temperature above 1000‹ C. from an atmosphere containing a hydrocarbon, an inert gas and, during the deposition of the wear-resistant layer and the border regions, a volatile compound of a carbide-forming element.
Patent GB-1155130-A (GB)
Title: Process for Producing Acoustically Insulating Surfacings
IPC: E04B1/82
Filed: 1967-11-13
Abstract: 1,155,130. Process for producing an acoustically insulating structure. SELS ET PRODUITS CHIMIQUES S.A. 13 Nov., 1967 [14 Nov., 1966], No. 51519/67. Heading B5N. A method of producing an acoustically insulating structure comprises attaching a sheet of acoustically insulating material, such as agglomerated cork to a support and subsequently applying a surface covering comprising slabs or tiles of stoneware, ceramic or similar material the tiles or slabs being applied with the aid of an hydraulic cement mortar containing additives, such as methylcellulose and polyvinyl alcohol, which reduce the minimum thickness in which the mortar can be applied, the mortar being applied to the sheet of acoustically insulating material, after an undercoating comprising an alkali-resistant synthetic rubber latex, such as neoprene, has been applied to that sheet.