baber/WOPTO huggingface dataset:
Patent GB-404010-A (GB)
Title: Improvements in the manufacture and production of sulphur
IPC: H04Q3/62
Filed: 1932-07-04
Abstract: In the production of sulphur from liquids containing it in suspension or in a condition such that it can be separated in elementary form by heat, e.g. from ammonium polysulphide solutions, the liquid is contained in a column of such a height that, when heated at the lower portion, the sulphur will be separated in the molten condition owing to the hydrostatic pressure produced.  Heating may be effected by the introduction of steam into the base of the column which is about 15 metres high and the temperature of the steam is above the melting point of sulphur.  In the form shown, a column K is provided with partitions Z having wide passages A for gases and vapours which are covered bells B formed with serrated edges.  Downward movement of the liquid is allowed by passages C which are bent or are covered with baffles situated beneath them to prevent passage of gas or vapour. Steam is supplied to the enlarged lower end S by a pipe F, the column being kept full of liquid by a feed pipe L and a draw-off pipe W. Molten sulphur collects at the base and can be drawn off by a valve H.  When using the apparatus for recovering sulphur from an impure solution of ammonium polysulphide, the main portion of the sulphur is withdrawn in a pure condition by closing the passage A in one of the lower <PICT:0404010/III/1> partitions and drawing off the liquid by a pipe situated above the partition, the liquid being led to a sulphur separator and then back to the apparatus by a pipe situated below the partition.  The process and apparatus may be applied to the recovery of sulphur from gas scrubbing liquor or from an aqueous suspension of iron oxide used in gas purification.  Chemical reactions producing sulphur may be effected in the column, e.g. the decomposition of ammonium polythionates or thiosulphates with or without sulphites or bisulphites.  Solutions of ammonium thiosulphates may be decomposed by sulphuric or phosphoric acid to give sulphur and ammonium sulphate or phosphate.  Specications 323,919 and 337,395, [both in Class 90, Non-metallic elements], are referred to.
Patent GB-740746-A (GB)
Title: Improvements in or relating to control mechanism of adjustable surfaces subject to fluid pressure
IPC: B64C13/00
Filed: 1951-08-10
Abstract: 740,746. Controlling aircraft; steering ships. SHIELDS, F. J., FENN, A. E., BARBER, E. G., MUNDAY, F. J., and ANCILLARY DEVELOPMENTS, Ltd. Nov. 10, 1952 [Aug. 10, 1951], No. 18928/51. Classes 4 and 114. [Also in Groups XXIV and XXIX] In a mechanism for adjusting the control surface on craft of the kind in which load-responsive means arranged in the transmission between the surface and the means by which movement is applied to it actuates a safety device on the attainment of a predetermined load to relieve the transmission of unwanted load, the loadresponsive means comprises resiliently yielding means constituting a part of the transmission, and a device influenced by the deflection of the yielding means renders inoperative the means for applying movement to the surface. The invention is applicable to the system disclosed in Specification 719,691, [Group XXIX]. As shown, the connection between the servomotor 28 and the control surface 29 on an aircraft comprises a link 13, a lever 15 pivoted at 16 to a plate 10 which is itself pivoted to the aircraft structure at 12, a link 14, and a lever 32. Lever 15 carries a box 17 which encloses a spring located between movable abutments 19, 20, these abutments contacting adjustable stops 21, 22 secured to the plate 10. When the motor is energized, provided that the load to be moved is not greater than a predetermined amount, the spring will act as a rigid link and the movement of the motor will be transmitted through the various components to the control surface; but, should the load exceed this predetermined amount, the spring will give and plate 10 will remain stationary, and the end of lever 15 will actuate one or other of two switches 25 to open a circuit through a relay. This last action will cut off the supply to the control system and will give an appropriate warning. Delay apparatus may be included to ensure that the supply is cut off only after the excessive load has been applied for a definite time. Manual actuation from the joystick 31 may be incorporated. In a modification, lever 15 and the spring box and switches are carried by lever 32.
Patent GB-755370-A (GB)
Title: Improvements relating to the control of micro-biological growth in beer
IPC: C12H1/14
Filed: 1954-06-29
Abstract: Finished beer contains thiolutin together with penicillin and/or polymyxin in an amount sufficient to inhibit microbiological contamination.  Oxytetracycline may also be present.
Patent GB-224937-A (GB)
Title: Improvements in or relating to pumps
IPC: F04C9/00
Filed: 1923-07-24
Abstract: 224,937. Rau, K. L. July 24, 1923. Self - driving machines. - An oscillating-vane pump having inlet valves V<3>, V<4> and valved passages K<1> in the vane connecting the four chambers C<1> - - C' in diagonal pairs is provided with two separate valveless outlet pipes P<1>, P<2> the movement of liquid in which is stated to provide energy to work the pump.
Patent GB-559308-A (GB)
Title: Improvements in a tractor mounted loading implement
IPC: A01D87/08
Filed: 1942-08-05
Abstract: 559,308. Hay-loaders and the like. SCHWAN, J. F. Aug. 5, 1942, No. 10930. [Class 6 (iii)] [Also in Group XXX] A hay-sweep and loader comprises a frame 5 rigidly mounted on the tractor frame B, forwardly-extensible booms 16, 18 pivoted on the frame 5, forwardly extending sweeps 23, and a supporting framework permitting the sweeps 23 to be elevated as the booms 16 are extended and then tipped to discharge the load, both these operations being performed by a fluid pump actuated by the tractor. The frame 5 comprises side bars 6, cross-bars, uprights 10, adjustable braces 12 and ties 15. The foreparts 18 of the booms 16, 18 form pistonrods slidable under fluid-pressure within the tubular parts 16, and are supported by radius-bars 33, pivoted at each of their ends to the supports 10 and rods 18, and a trussframe 41, 42. Fluid pressure supplied by a hydraulic pump 43 traverses a valve housing 49 having controls 51, 59 convenient to the driver's seat H. When the control handle 51 is operated pressure supplied to the hollow booms 16 forces out the rods 18, causing the combined members 16, 18 to be swung up as far as the position indicated in broken lines, Fig. 2, raising the loaded sweep 22. The valve control 59 is operated to supply or release pressure to or from a cylinder 55. The lower end of the piston rod 56 carries a pulley over which runs a cord 62 connected to the sweep 22 which by varying the pressure may thus be kept horizontal. On releasing the pressure the sweep tilts and discharges its load.
Patent GB-807106-A (GB)
Title: Improvements in or relating to cathode ray tubes and screens therefor
IPC: H01J29/18
Filed: 1956-06-20
Abstract: 807,106. Cathode-ray tubes ; electroluminescence. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. June 20,1956 [June 27, 1955], No. 19034/56. Drawings to Specification. Class 39(1). The screen consists of a phosphor whose cathode-luminescence is enhanced by an applied alternating electric field. The phosphor may be coated on both sides with a conductive layer to which connections are made to the A.C. supply ; the one on the cathode side may be aluminium and on the envelope side tin oxide. The tin oxide coating may be on the outside of the tube envelope and protected by a plastic coating. The phosphor may be suspended in a dielectric medium or a separate dielectric layer may be interposed on the cathode side ; suitable dielectrics are polyamide or methylmethacrylate. The phosphor may be zinc or zinc-cadmium sulphide activated by manganese (0À05 mol per cent.) and with or without silver (0À5 mol per cent. of Mn); the ratio Zn : Cd may be 3 : 1 or 7 : 1. 60 volts applied to a layer 0À06 mm. thick gave a 26 per cent. enhancement.
Patent GB-573711-A (GB)
Title: Improvements in or relating to water softening
IPC: C02F5/02
Filed: 1943-11-16
Abstract: 573,711. Water-softening. CLARK, L. M., EVANS, H., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. Nov. 16, 1943, No. 19076. [Class 46] A water-softening process comprises separately adding the water and aqueous caustic soda, or aqueous lime and if desired sodium carbonate. to an agitated aqueous suspension of magnesium hydroxide crystals, while maintaining sufficient agitation and a sufficient number of such crystals present relative to the rate of magnesium hardness removal to ensure that substantially all the magnesium hardness removed from the water crystallizes on the existing magnesium hydroxide crystals, and separating clear soft water from the suspension. For cold water softening the weight of existing crystals in the precipitation zone is at least 500 times and generally 1,000 to 5,000 times the weight of magnesium hydroxide being precipitated per hour, and the most suitable sizes of crystals are between 5 and 50 microns diameter. In the preferred form of the invention both magnesium hydroxide and calcium carbonate are precipitated on to existing crystals of magnesium hydroxide and calcium carbonate. The equipment may comprise a precipitation tank fitted with a propeller stirrer and a settling tank. Water having both temporary and permanent hardness is fed to the precipitation tank which contains the crystals. Into the opposite side of the tank is fed an aqueous solution of caustic soda. The overflow from the precipitation tank is passed to the settling tank where crystals of magnesium hydroxide and calcium carbonate settle out. Clear water is removed from the top of the settling tank and the bulk of the settled solid is pumped back to the precipitation tank. Specifications 571,276 and 571,718, [both in Group III], are referred to.
Patent GB-186199-A (GB)
Title: Process for the extraction of alkali from feldspar and other minerals containing alkali
IPC: C22B26/10
Filed: 1921-07-15
Abstract: In a process for obtaining alkali compounds from minerals containing alkali in an insoluble or difficulty soluble form the mineral is preliminarily colloidalized by intensive mechanical disintegration preferably in the colloid mill described in Specification 155,836. In an example, feldspar is colloidalized with or without an alkali, an alkaline substance or other dispensator.ALSO:Alkali metal compounds, obtaining from complex silicates Alkali metal compounds are extracted from minerals containing alkali in an insoluble or difficulty soluble form by subjecting the mineral to intensive mechanical disintegration at a peripheral speed of at least 1000 metres per minute, preferably in the colloid mill described in Specification 155,836, [Class 1 (i), Chemical processes &c.], before or during chemical or electrochemical treatment.  The extraction is preferably carried out after pre-treatment, such as by heating with carbonaceous material or with reducing gases.  The ground mineral may be allowed to stand in a dilute mineral acid and then treated in the colloid mill, either with or without superheated steam and high pressure; or it may be treated directly in the colloid mill with alkaline or other dispersator, the alkali being extracted directly or with superheated steam; or it may be first colloidalized with water, and then treated with acid or alkali. The mineral dispersion may also be electrolyzed.  In an example ground feldspar is allowed to stand in dilute hydrochloric acid, the mixture diluted and colloidalized and the dispersion heated in an autoclave to about 225 DEG  C. at a pressure of 25 atmospheres.  The solution is filtered and concentrated.
Patent GB-352704-A (GB)
Title: Improvements in or relating to the separation of two liquids of different specific gravity
IPC: B04B1/08
Filed: 1930-06-23
Abstract: 352,704. Centrifugal machines. AKTIEBOLAGET SEPARATOR, 8, Fleminggatan, Stockholm. June 23, 1930, No. 19118. Convention date, July 3, 1929. [Class 23.] Density separators.-In a process for separating two liquids of different specific gravity, wherein the heavier liquid is discharged through a seal of said liquid, the lighter liquid, after separation,.is forced to pass again through the heavier liquid in a chamber communicating with the liquid seal at nearly the same level as that separating the two liquids in the separation chamber, and is discharged through an outlet at a level between that of the outlet for the heavy liquid and the level of the light liquid in the separating chamber. In a centrifugal apparatus the mixture is led into the separating chamber of the bowl through channels K, L and the heavier liquid discharges through a channel M. The lighter liquid moves upwards through discs fitted within the bowl and then passes down a pipe P. It moves on through a seal of the heavier liquid in the chamber R and discharges through an outlet I. The end of the tube P may be of adjustable length so that the level of separation between the two liquids may be situated at various distances from the central axis.
Patent GB-1463626-A (GB)
Title: Data transmission system
IPC: G06F13/42
Filed: 1974-05-01
Abstract: 1463626 Data transmission SOLARTRON ELECTRONIC GROUP Ltd 30 April 1975 [1 May 1974] 19155/74 Heading H4P A bit-parallel, byte-serial data transmission system comprises more than two devices such as 11 linked to a data highway 10 and to first, second and third handshake lines 18, 19, 20 by means of individual interfaces each constituted by logic circuitry such as that indicated at 12 to 17. The interfaces are arranged to control the exchange of data between a source device and a plurality of acceptor devices, the first line 18 carrying a two-level signal determined by the interface of the source device and indicating whether or not validly acceptable data is available, the second line 19 carrying a two-level signal determined by the interfaces of the acceptor devices and indicating whether all or not all deceptor devices have seen data, and the third handshake line 20 carrying a twolevel signal determined by the interfaces of the acceptor devices and indicating whether all or not all of the acceptor devices have accepted a byte of data. The interfaces are arranged to establish the following handshake cycle of operations: (1) First line to data available level; (2) Second line to level for data seen by all acceptor devices; (3) Signal from interface of the source device commanding the interfaces of the acceptor device to accept data; (4) Interfaces of acceptor devices accept data in response to (3); (5) Third line to level for data byte accepted by all acceptor devices; and (6) Change data byte and re-set first line to data available level to recommence the cycle. The Specification states that the arrangement is such that no built in delay is required as in known systems, any necessary delay being averted by the existing circumstances, whereby the best possible speed of data exchange is achieved in such circumstances. The system may include a fourth handshake line 21 carrying a two-level signal determined by the interfaces of the acceptor devices and indicating whether all or not all acceptor devices are ready for more data, and wherein operation (6) occurs only when operation (5) is complete and the fourth line is at the level indicating all acceptor devices are ready for more data.
Patent GB-1374567-A (GB)
Title: Double reflector antenna arrangement
IPC: H01Q19/195
Filed: 1973-04-19
Abstract: 1374567 Aerials TELEFON AB L M ERICSSON 19 April 1973 [24 April 1972] 19196/73 Heading H4A A Cassegrain-type aerial arrangement comprises a polarization-turning main reflector 11, a polarization-dependent sub-reflector 12, and a feeder 10 having an oval aperture 20, which faces the sub-reflector. As described, the aperture is elliptical, with its major axis horizontal, and vertically polarized waves are radiated therefrom. The sub-reflector 12 is in the form of a plastics material shell, in which vertical wires are embedded. The waves from the feeder 10 are directed by the sub-reflector to the main reflector 11, where they are collimated and their polarization is changed to horizontal, so that they are then able to emerge through the subreflector. The oval aperture in the feeder is stated to reduce side lobes. One or more dividing walls may be provided, such as a central septum 21, which allows operation in a difference-mode.
Patent GB-682027-A (GB)
Title: Process for separation of mixtures of particles differing in size and specific gravity by means of a separating suspension
IPC: B03B5/30
Filed: 1950-08-01
Abstract: 682,027. Washing granular material. MAATSCHAPPIJ VOOR KOLENBEWERKING STAMICARBON N.V. Aug. 1, 1950 [Aug. 4, 1949], No. 19226/50. Class 82(ii). In a process for separating particles in a separating suspension either by sink and float or cyclone separated at difwhich coarse and fine fractions are separted at different stages the average size of the weighting material is smaller in the separation of the fine fraction than in the separation of the coarse fraction. As shown in the separation of coal from shale in which fine shale is used as the weighting material, raw coal up to 8 m.m., in size is fed into a mixer and pumped, with the suspension, to a cyclone separator, the large coal, up to 8 m.m., being discharged from the large end of the cyclone and the small coal and shale from the apex. Both discharges are treated on a 1 m.m. screen, the. undersize being fed to a second mixer together with the undersize' washings from the screen after thickening. Discharge from the second mixer is fed to a second cyclone, the coal and fine shale, below 1 m.m., being treated by froth floatation to separate the coal, and the tailings from the froth flotation, after thickening, being returned to the second mixer. The second cyclone is always fed with coal and shale below mm. In a modification, Fig. 2 (not shown), a mag -  netic weighting material is used, a magnetic separator being used to separate the weighting material from the fine coal and fine shale. Specifications 601,063, 601,166, 604,368, 655,957, 662,794 and 666,801 are referred to.
Patent GB-987988-A (GB)
Title: Improvements in or relating to swaging or drawing apparatus
Inventor: CAUSER ROY
IPC: B21C3/12
Filed: 1961-05-29
Abstract: 987,988. Rolling tubes. UNITED KING- DOM ATOMIC ENERGY AUTHORITY. May 29, 1962 [May 29, 1961], No. 19262/61. Addition to 946,407. Heading B3M. Swaging apparatus for reducing the diameter of a tube comprises a number of swaging heads in tandem, each head having a ring of planetary balls which surrounds the tube, the end swaging heads being of the type described in the parent Specification in which the diameter of the ring of balls is adjustable by moving the ring axially relative to an internally coned annulus. The diameter of the ring of balls of the intermediate heads is fixed. Two swaging heads in tandem, Fig. 2, have fixed diameters, a tube 4 being drawn over a stepped mandrel 5. A pulleydriven gear 9 drives a gear 8 bolted to a support 66 housing the two races. Omission of the central mandrel allows a change in the wall thickness of the tube during a reduction in diameter.
Patent GB-1534896-A (GB)
Title: Direct metal contact to buried layer
IPC: H01L21/316
Filed: 1976-05-11
Abstract: 1534896 Semiconductor devices ITT INDUSTRIES Inc 11 May 1976 [19 May 1975] 19319/76 Heading H1K Electrical contact is made to a buried layer in a semiconductor body by means of a metal region filling a recess in the body extending through to the buried layer, the metal region being electrically isolated from at least part of the pn junction between the buried layer and the overlying semiconductor material. In Fig. 16, in which buried layer 24 is the collector of a transistor and is located beneath an epitaxial layer 25 of the opposite conductivity type, Al for the collector terminal fills the recess and contacts the buried layer 24 through an opening 42 in an oxide layer which otherwise covers the walls of the recess. The opening 42 is formed by the use of a negative photoresist etching mask exposed to a collimated light beam at an angle to the semiconductor surface. The transistor is laterally isolated by further recesses lined with oxide and filled with Al which is partially anodized, again using an inclinedbeam exposed photoresist mask, to form aluminium oxide regions 45.
Patent GB-355423-A (GB)
Title: Improvement in and relating to greyhound racing with dummy hares
IPC: A63K1/02
Filed: 1930-06-25
Abstract: 355,423. Dog-racing apparatus. HILL, J. and HILL, C., Henry Street, Dungannon, Co. Tyrone, Ireland. June 25, 1930, No. 19330. [Class 132 (i).] In greyhoundracing apparatus of the kind in which the lure 3, Fig. 1, is attached to an endless cable 4 which is driven by an endless belt 9, 10 having means for gripping the cable over a part of its length, means are provided for bring- ing the clipping devices together as they meet the cable and to release them as they recede therefrom. In the arrangement described a trolley 2 by which the lure is carried is connected to the endless cable 4 running over horizontal pulleys 5. Drums 7, 8 drive a two-part belt 9, 10 connected by hinges 11 riveted thereto each of which has a plate 12 for gripping the cable attached thereto provided with pins 13 on which are compression springs 14 normally tending to close the grips, as shown in Fig. 6, but which are forced apart by the drums 7, 8 bearing on the belts 9, 10 as shown in Fig. 4.
Patent GB-648765-A (GB)
Title: Improvements relating to the arresting of corrosion
IPC: C23F11/18
Filed: 1947-07-18
Abstract: The corrosion of ferrous surfaces is arrested by treating the surface with a viscous liquid or paste including an aqueous solution of sodium nitrite or other known water-soluble and corrosion-inhibiting inorganic alkali metal nitrite and a thickening agent, removing the liquid or paste and then applying a preservative coating.  The surface is preferably cleaned before treatment and dried before application of the preservative coating while the thickening agent may comprise corn-starch.  A moisture-retaining agent, e.g. glycerine and a wetting-agent, e.g. an alkyl naphthalene sulphonate may also be present.  The final coating may consist of paint enamel, oil or grease and the nitrite may comprise the major proportion of the composition by weight apart from the water.  A specified composition comprises sodium nitrite, corn-starch, glycerine, alkyl naphthalene sulphonate, green dye and water.