baber/WOPTO huggingface dataset:
Patent GB-1132831-A (GB)
Title: Process for the continuous precipitation of inorganic products in the form of gels
IPC: B01J13/00
Filed: 1965-11-12
Abstract: 1,132,831. Inorganic gels. DEUTSCHE GOLDUND SILBER-SCHEIDEANSTALT. 12 Nov., 1965 [12 Nov., 1964], No. 48166/65. Heading C1A. Inorganic gels are continuously precipitated from aqueous solutions of metal salts by acids, bases or salts continuously fed to a reaction vessel, the temperature, pH values and concentrations of the aqueous solution and the precipitation components being continuously adjusted in respective feed tubes therefor to the particular conditions required for the precipitation. The reactants may be mixed in the reaction vessel by introducing them tangentially into an inverted conical reaction vessel with a stirrer (Fig. 1, not shown), the product solution being removed from the lowest point of the cone, or by introducing them tangentially from feed tubes with radial bores into a tubular reaction vessel surrounding the feed tubes (Fig. 2, not shown). The gel may be calcium, aluminium or barium silicate, hydrated alumina, prussian blue, SiO 2 , a copper-chromium oxide catalyst or ammonium uranate. The production of SiO 2  gel is exemplified from an aqueous sodium silicate solution having a pH of 9-12 at 80-90‹ C. The reaction may be carried out in a number of reaction vessels in tandem, the residence time of the reactants in each being 2-4 minutes and the solids content of the first and second vessels may be 15-25 g./l. SiO 2  and 25-50 g./l. SiO 2 , respectively, and may be 50-85 g./l. SiO 2  before acidification with H 2 SO 4 .
Patent GB-1177259-A (GB)
Title: Process for the Preparation of N-hydroxyimidothiocarboxylic Acid Esters
Inventor: ANDERS BERTRAM
IPC: A01N/
Filed: 1967-10-24
Abstract: 1,177,259. N-Hydroxyimidothiocarboxylic esters. FARBENFABRIKEN BAYER A.G. 24 OCT., 1967 [17 Dec., 1966], No. 48315/67. Heading C2C. In a process for the production of a N- hydroxyimidothiocarboxylic acid ester of the formula in which R is hydrogen or an aliphatic radical (which may be halosubstituted) and R 1  is a substituted or unsubstituted aliphatic radical, a cycloaliphatic radical which may be unsubstituted or substituted by C 1-6  alkyl radicals, a substituted or unsubstituted araliphatic radical or a substituted or unsubstituted aromatic radical an aldehyde of the formula RCHO is reacted in aqueous medium, optionally in the presence of an inert organic solvent with approximately the stoichiometric amount of hydroxylamine, followed by acidifying the reaction mixture to a pH not greater than 1 with a mineral acid, introducing at a temperature of approximately - 20 C. to approximately + 20 C. not more than two equivalents of chlorine and then, after adding approximately half an equivalent of a base, reacting in said temperature range and at a pH not greater than 1 with approximately the stoichrometric amount of a mercapto compound of the formula R 1 -SH. Examples are furnished.
Patent GB-1364694-A (GB)
Title: Barrel type hydrostatic machines
IPC: F01B3/00
Filed: 1971-10-19
Abstract: 1364694 Reciprocating pumps and motors SOC ANON AUTOMOBILES CITROEN 19 Oct 1971 [22 Oct 1970] 48616/71 Heading F1A A swash-plate pump or motor comprises a rotary cylinder block 14 biased against a ported valve face 26 by hydraulic pressure acting in a stepped chamber 42 in the cylinder block, the chamber being open at its end adjacent the valve face 26 and closed at its other end by a piston 40 fixed to drive-shaft 7, pressure being developed in the chamber by leakage entering the chamber from between the cylinder block and valve face and passing from the chamber to the casing interior via clearance between the piston 40 and the chamber wall, the chamber pressure increasing with increase in leakage to increase the biasing force on the cylinder block. Springs 35 provide additional biasing force on the block. Recess 38 in valve face 26 may be off-set from the shaft axis. Shaft 7 is coupled to shaft 2 by gears 5, 6.
Patent GB-1492950-A (GB)
Title: Pneumatic control of vehicle headlamps
IPC: B60Q1/105
Filed: 1974-11-12
Abstract: 1492950 Regulating vehicle headlamps WESTFALISCHE METALL INDUSTRIE KG HUECK & CO 12 Nov 1974 [24 Dec 1973] 48891/74 Heading F4R [Also in Division G3] A servomotor 11 for adjusting the headlamps of a vehicle carries a valve unit 10 having closure members 29, 30 to control the servomotor in response to pressure signals applied to opposite sides of a diaphragm 3 by modulators controlled by relative movement between the vehicle chassis and its axles. The closure members are hinged to the valve unit and actuated by a pin 22 on a rod 13 connected to the diaphragm. Downward deflection of the diaphragm opens the closure member 30 to connect the space below the servomotor to a source 28 of positive or negative pressure while upward deflection opens the closure member 29 to connect the space to atmosphere through a filter 31. Upward movement of the servomotor is restricted by flexible elements 15 of polyester in stranded metal wire.
Patent GB-956956-A (GB)
Title: Grid electrode structure and manufacturing method therefor
IPC: H01J19/00
Filed: 1962-12-28
Abstract: 956,956. Producing grid electrodes; winding wire grids; brazing. WESTINGHOUSE ELECTRIC CORPORATION. Dec. 28, 1962 [Feb. 9, 1962], No. 48897/62. Headings B3A, B3E and B3R. A method of making a grid electrode for an electronic discharge device comprises the steps of coating a frame 22 with copper and then gold, winding a number of turns of fine gold plated wire 30 on the frame, heating the frame and wire to a temperature sufficient to make the gold and copper in the frame go into solid solutions, the solutions being rich enough in gold to prevent the gold from the wire turns from being dissolved, and cooling the frame and wire to secure the turns in place. The wire may be of tungsten and the frame of molybdenum, and the heating takes place in a hydrogen or amino-gas atmosphere at about 930‹ C. Two frames 24 are held in a jig 40 and the wire wound round both of them before the whole assembly is heated.
Patent GB-1449230-A (GB)
Title: Turbojet-engine powered aircraft having thrust reversing means
IPC: F02K1/60
Filed: 1973-10-19
Abstract: 1449230 Deflecting propulsion jets MOTOREN-UND TURBINEN-UNION MUNCHEN GmbH 19 Oct 1973 [25 Oct 1972] 48958/73 Heading B7G An aircraft gas turbine engine has a jet pipe comprising three sections 5, 6, 8, section 8 carrying a variable-area nozzle 11. For thrust spoiling flaps 13, shown in their operative position in dotted lines are normally nested on the engine cowling 15, as shown by full lines and they are each mounted by a pivotable parallel linkage comprising a main lever 23 and a pushpull rod, the lever 23 being fast with a hub 22 having circumferential teeth engaged by a toothed rack 20 which is moved axially by a piston-and-cylinder device 18, 19 the whole mechanism being carried on each side of the jet pipe by a bracket 17 pivotally mounted on a further bracket 16 fast with the engine structure. In an installation having two engines mounted side-by-side it is necessary to ensure that when deflected the reversed thrust jets should not inter-act in the general vicinity of the longitudinal centreline nor should they cause re-ingestion of jet gases and to this end baffles 26, 26<SP>1</SP> are positioned on the respective inner faces of deflector flaps 13, 13<SP>1</SP> to deflect gases simultaneously forward and laterally outward and away from the aircraft longitudinal centreline 25. The baffles are bent at 27, 27<SP>1</SP> to form flanges substantially parallel to the inner face of the respective baffle and adjustable baffles 28, 28<SP>1</SP> may be provided.
Patent GB-1282965-A (GB)
Title: Fine zinc alloy
Inventor: PELZEL ERICH
IPC: C22C18/00
Filed: 1970-10-16
Abstract: 1282965 Zinc based alloy STOLBERGER ZINK A G FœR BERGBAU UND HUTTENBETRIEB 16 Oct 1970 [25 Oct 1969J 49356/70 Heading C7A A zinc based alloy has a composition apart from impurities within the area defined by the points:- A) 0À05% Cr, 0À05% Ni, balance fine Zn, B) 0À2% Cr, 0À05% Ni, balance fine Zn, C) 0À05% Cr, 0À2% Ni, balance fine Zn, and D) 0À45-0À55% Cr, 0À45-0À55% Ni, balance fine Zn, when plotted on a ternary Cr, Ni, Zn diagram. Up to 1À7% of the Zn may be replaced by an equal amount of Cu. The alloys may be cast at 450‹C., hot rolled at 250‹C. and then cold rolled to gauge to form strip or hot pressed and drawn to form wire.
Patent GB-1498754-A (GB)
Title: Method and apparatus for governing pressurised air flow to the combustion chamber of an external combustion hot gas engine
IPC: F02G1/047
Filed: 1975-12-02
Abstract: 1498754 Hot gas engines UNITED STIRLING (SWEDEN) AB & CO KB 2 Dec 1975 49363/75 Heading F1S The pressurized air-flow to the combustion chamber of a hot gas engine is controlled by generating a primary air-flow of pressurized air, dividing the primary air-flow into a main flow directed to the combustion chamber and a branched off minor flow, utilizing the pressure of the minor flow for controlling the primary air-flow and utilizing the temperature of a heated part of the engine for controlling the relative proportions of the main flow and the branched-off minor flow. As shown an air compressor 1 delivers the primary pressurized air-flow and bye-pass 6 and an air control valve 8 are provided for dividing the air-flow into a main flow and a minor flow. The pressure in the bye-pass 6 is utilized to regulate the speed of the compressor 1 and the temperature of a heated part of the engine is used to regulate the valve 8.
Patent GB-1404976-A (GB)
Title: Collapsible revolving door having pairs of pivot detents at  the top and bottom of eacht leaf
IPC: E05D15/02
Filed: 1972-10-27
Abstract: 1404976 Revolving doors D LOWE 27 Oct 1972 [16 Dec 1971] 49629/72 Heading E1J A collapsible revolving door comprises door leaves 4 rotatable about a vertical axis, bearing plates 28 secured to each leaf and supported on plates 18 pivotable about the axis, the bearing plates and support plates being releasably connected by detents comprising releasable pivots. Each bearing plate has a socket 50 on each side of the leaf which engage with balls held in the retaining plate 18 when the leaf extends radially from the axis. Each socket has a "run-out" 56 extending towards the central axis. To collapse the door, a force on a leaf having a radially outward component through the detent on one side causes the socket to move off the ball on this side and the door leaf pivots on the detent on the other side into a folded position. Shaft 6 is secured to plates 18 or may be omitted. Central seals (86) are provided.
Patent GB-1363771-A (GB)
Title: Electroacoustic transducers
IPC: B06B1/06
Filed: 1971-10-26
Abstract: 1363771 Piezoelectric devices B TOCQUET and M PERSONNIC 26 Oct 1971 [6 Nov 1970] 49796/71 Heading H4J A stack of piezoelectric plates, e.g. discs, 9 (Fig. 1), alternating with electrodes 10 is secured within a casing 8 by a rigid inner member 1 secured to the stack and constituting one of the electrodes 10, a rigid outer member 2 secured to the easing 8 and a deformable coupling member 3 between the rigid members 1, 2. The rigid members 1, 2 interengage with a clearance fit and define between them a seating in which is disposed the deformable coupling member 3. Casing 8 is fluid-tight and the device is for subaqueous signalling. The coupling member 3 is made of one or several discs of rubber or synthetic elastomer and is secured to the faces of members 1, 2. In use the coupling member 3 is at a nodal plane of vibration. As described, the members 1 and 2 are annular, member 1 being of aluminium alloy and member 2 being of steel. In an alternative embodiment (Fig. 4, not shown) a clip (6) and stop (7) limit the relative movement of the members 1, 2.
Patent GB-1089736-A (GB)
Title: Engine cooling arrangement in motor vehicles
Inventor: ISSIGONIS ALEXANDER ARNOLD
IPC: F01P5/02
Filed: 1965-11-23
Abstract: 1,089,736. Cooling motors. AUSTIN MOTOR CO. Ltd. Oct. 7, 1966 [Nov. 23, 1965; Dec. 7, 1965], Nos. 49803/65 and 51761/65. Heading B7H. In a vehicle having a front mounted engine and the drive is transmitted to the front wheels, the power unit includes a hydrokinetic torque converter disposed at the front of the engine in a similar manner to that described in Specification 1,089,490, fan blades being formed on the rotary casing of the converter 2. The fan is enclosed within an annular radiator 6 which has radial airways. Air from the frontal intake 3 is directed through the radiator by shrouds 7 and 8. A. layout for a transverse engine is also described in which air is conducted from the frontal intake to the eye of the fan by a curved duct.
Patent GB-1064738-A (GB)
Title: Improvements in rubbing apparatus for use with machines preparatory to spinning
IPC: D01G15/60
Filed: 1963-12-17
Abstract: Rubbing leathers for machines preparatory to spinning have their inner peripheral surfaces provided with a grooved profile extending in the lengthwise direction.  At least one of the rollers carrying the belt is formed with a corresponding profile. The grooves extend only part way across the belt and roller, the outer marginal zones being left plane.
Patent GB-1087856-A (GB)
Title: Metallized paper condensers
Inventor: TOMAGO AKIO
IPC: H01G4/16
Filed: 1964-12-08
Abstract: 1,087,856. Capacitors. MATSUSHITA ELECTRIC INDUSTRIAL CO. Ltd. Dec. 8, 1964, No. 49933/64. Heading H1M. A capacitor employs paper 1 metallized on both sides 3 in vacuum, a non-metallized paper being used to separate adjacent turns in a spirally wound component. The paper 4 may be replaced by paper metallized on one side, Fig. 4 (not shown), or both sides, Fig. 5 (not shown). The paper is metallized in strips on a roll with spacing between adjacent strips to provide the staggered effect. Fig. 3, when the paper is cut along its width, Fig. 6a (not shown). The metal grains are 100 A to 1500 Š in diameter and the paper has a cellulose proportion of the total volume greater than 52%. Limits are given for the permissible number of conductive particles per square metre for different paper thicknesses. The evaporated metal may be aluminium, cadmium, lead, magnesium, tin or zinc.
Patent GB-1368378-A (GB)
Title: Ferroelectrictype optical filter
IPC: E06B9/24
Filed: 1972-10-30
Abstract: 1368378 Modulating light UNITED STATES ATOMIC ENERGY COMMISSION 30 Oct 1972 [1 Dec 1971] 49942/72 Heading H4F [Also in Division G1] A variable density optical filter comprises a ferroelectric ceramic plate 18 having two electrodes 20, 22 and sandwiched between a polarizer 24 and analyser 26, and a photo-cell (in circuit 28) responsive to the ambient light level to control the voltage on electrodes 20, 22 and hence the polarization state of plate 18 so that the transmission of the filter 24, 18, 26 varies with the ambient light level. More than one plate and analyser-18<SP>1</SP>, 24<SP>1</SP>- may be provided in the filter. The plate is a lead zirconate-lead titanate solid solution which may be strain biased. The filter may form the eyepieces of a pair of protective goggles, Figs. 6a, 6b (not shown).
Patent GB-1399067-A (GB)
Title: Light-attenuation devices
IPC: G03B11/00
Filed: 1973-10-29
Abstract: 1399067 Optical filters CANON KK 29 Oct 1973 [28 Oct 1972] 50238/73 Heading G2J  A light attenuating device comprises an adjustable mechanical diaphragm (not shown) e.g. an iris diaphragm and at least one neutral density filter 9 optically aligned with the diaphragm. Filter 9 has a central region R 1  of uniformly high density and a second region R 2  the density of which reduces linearly outwardly from that of the first region. Thus the device has a much higher attenuation ratio than that of the diaphragm alone. A third region R 3  of 100% transmittance may be provided outside region R 2 . Regions R 1  and R 2  may be continuous tone areas or be composed of neutral colour dots of varying numerical density. The filter 9 may be made by placing a lightsensitive film displaced from and parallel to the image plane of an objective lens which projects an image of a continuous tone pattern. The film is then processed.
Patent GB-1487850-A (GB)
Title: Printing device
IPC: B41J7/54
Filed: 1974-11-21
Abstract: 1487850 Selective printing PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 21 Nov 1974 [24 Nov 1973] 50493/74 Heading B6F A drive for a print head carriage 1 includes a tape 8 attached at both its ends to the carriage (at points 25, 26) and a cylindrical drum 18 on which the tape is wound. Rotation of the drum causes the tape to be simultaneously wound on to and off the drum. The sense of rotation of the drum determines the direction of movement of the carriage 1. The tape 8 passes round a guide 31 attached to a portion 30 of the carriage 1 which is movable relative to the rest of the carriage. The print head (not shown) is attached to the portion 30. Rotation of eccentrically mounted roller 24 moves a guide 12 and slackens the tape. As a result a spring 34 moves the guide 31 to the right (as viewed) and the guide 27 downwards. This movement is also performed by the portion 30 so as to withdraw the print head from the platen (not shown) without any movement of the remainder of the carriage.
Patent GB-1462215-A (GB)
Title: Electrochemical electrode systems
IPC: G01N33/483
Filed: 1974-11-26
Abstract: 1462215 Salt bridge leak INSTRUMENTATION LABORATORY Inc  26 Nov 1974 [20 Dec 1973] 51185/74 Heading GIN A salt bridge leak comprises two structures 22, 30 defining chambers, each having an opening (26, 38) in respective mating surfaces thereof, a flow control member 40 mounted over one of the openings, cooperating guide surfaces 62, 82 on each structure so that the openings be moved in a straight line towards each other and a clamp 90 to hold the flow control member between the openings without exposing it to shear forces. One chamber (30) has a central passage 116 for reference cell electrolyte and an air bleed hole 120 and the guide members 82 thereon extend on two sides of and protect the flow control member 40 which is stuck in position by PTFE ring 114. The other chamber 22 has a through passage 52, 24, 28 with a central bend portion which communicates with opening 26. Surfaces 62, 64 thereon guide member 30 to the desired relative position where it is held by screwed clamp 90 surrounding both parts. Seal 106 closes the air bleed hole when the device is clamped together.  The flow control member, which serves as the salt leak is a thin membrane of hydrophilic polycarbonate comprising a plurality of parallel, equal length passages either of diameter less than 0À5 micron or of a density of at least 10<SP>8</SP> per sq cm. and of dimensions such that electrolyte flow therethrough is less than 0À1 microlitre per minute per sq mm per cm head. The cell may be used to measure blood pH with the blood flowing through a pH sensitive glass tube with Ag/AgCl reference and passage 24 and with a calomel electrode adjacent passage 116.
Patent GB-1247606-A (GB)
Title: Process for the manufacture of monochloroacetyl chloride
Inventor: OPITZ WOLFGANG
IPC: C07C51/60
Filed: 1969-10-21
Abstract: 1,247,606. Chloroacetyl chloride. KNAPSACK A.G. 21 Oct., 1969 [22 Oct., 1968], No. 51563/69. Heading C2C. Chloroacetyl chloride is prepared by introduction of gaseous phosgene into a monochloroacetic acid melt at 90-130‹ C. having therein as catalyst a metal of Group VIII of the Periodic Table or a chloride or nitrate thereof, continually removing Chloroacetyl chloride vapour from the reaction mixture, and recovering the product by condensation and distillation.
Patent GB-1397359-A (GB)
Title: Television apparatus
IPC: H04N5/217
Filed: 1973-11-07
Abstract: 1397359 Television ROBERT BOSCH FERNSEHANLAGEN GmbH 7 Nov 1973 [10 Nov 1972] 51638/73 Heading H4F In an arrangement for compensating for the effects of stray light in a television camera tube (i.e. light produced by reflection upon or within the storage electrode) the tube being scanned during fly-back with an increased intensity beam (to remove charges due to highlights), a first control signal is derived from the output signals of the tube which lie within the useful range of video signals and a second control signal is derived from output signals above this range each control signal being employed to control the black level of the signals within the useful range. As shown in Fig. 1, the output signal of a pick-up tube 2, comprising as shown in Fig. 2, signals in the useful range A and signals above this range as shown at B, both ranges including a signal C produced during fly-back by the increased intensity beam, are separated by stage 3 into the A and B components. The former component A is supplied via pre-amplifier 4 to a black-level control stage 6 and additionally is supplied to a control signal generator 9 comprising amplifier 7 and integration network 8 which produces a signal corresponding to the mean value of the component A and this signal is employed to control the black level circuit 6 to compensate for the stray light effect. The B component is processed in similar manner in a control signal generator 11 to produce a corresponding mean value control signal which is also employed to control the black-level circuit 6. Alternatively, the latter control signal may be employed to control a second black-level stage. When the pick-up tube forms part of a colour television camera the effect of the black-level control on the white level signal is compensated by employing a fraction of the total control signal to control an amplifier stage 14. The compensated signal is then supplied to the output terminal 18 via a gamma control stage 16 and an output amplifier 17.
Patent GB-1449558-A (GB)
Title: Domestic sewage treatment plant
IPC: B01D21/00
Filed: 1974-12-02
Abstract: 1449558 Activated sludge process WALTEC INDUSTRIES Ltd 2 Dec 1974 [20 Dec 1973] 52024/74 Heading C1C An individual household size aerobic sewage treatment system designed for automatic low maintenance operation comprises an aeration tank having a perforated partition dividing said tank into a first aeration chamber and a second aeration chamber, said first aeration chamber having a raw sewage inlet and said second aeration chamber having an air lift pump for transferring waste substantially continuously to a separate settling chamber, said airlift pump tending when operating to maintain fluid level in said aeration tank below the level of said inlet whereby said aeration tank can accept shock hydraulic loads, said settling chamber having a plurality of settling acceleration plates inclined away from an outlet thereof for feeding effluent to a filter bed.
Patent GB-1411128-A (GB)
Title: Process for the separation of liquids and solid materials by means  of filtration
IPC: B01D29/62
Filed: 1972-11-10
Abstract: 1411128 Filtration of solids from liquids SHELL INTERNATIONAL RESEARCH MAATSCHAPPIJ BV 10 Nov 1972 [12 Nov 1971] 52032/72 Heading B1D In a process for the separation of solid and liquid materials by means of filtration with a rotary filter (e.g. filter drum) in which the filter cake obtained is washed at a number of successive locations with a washing liquid in which the solid material is at least substantially insoluble, the quantity of washing liquid applied at each successive location is greater than at the preceding location and the increase is in the direction of travel of the filter cake. The increased quantity of washing liquid may be applied from spray nozzles of increased number or capacity or operating at increasing pressure at successive locations. The washing liquid being of a lower viscosity than that of the original filtrate, the quantity of washing liquid applied at each location is inversely proportional to the viscosity of the liquid present in the cake at that location. The solid material may be wax crystallised by cooling from a liquid which may be mineral oil, the washing liquid may be an oil solvent, for example a methylethylketone/toluene mixture, propane, methylisobutylketone or mixtures of dichloromethane and dichloroethane. The crystallisation of the wax may be carried out in the presence of a polyalkylmethacrylate or a mixture of polyalkylmethacrylates. The spray nozzles may be arranged in rows across the moving filter.