baber/WOPTO huggingface dataset:
Patent GB-917190-A (GB)
Title: Production of liquid or gaseous sulphur dioxide
IPC: C01B17/56
Filed: 1961-03-30
Abstract: <PICT:0917190/III/1> Liquid or gaseous SO2 is produced from a gas mixture containing SO2 by absorbing the gas in H2O or aq. SO2 to form a 2-30% SO2 solution, stripping in a first stage the SO2 from the aq. solution at a pressure of 2,5-20 Kg./cm2. until the solution contains 0,1-5% SO2 and collecting the SO2 as a gas or condensing it to a liquid, stripping in a second stage further SO2 from the aq. solution at a pressure of less than 2,5 Kg./cm2. and returning the SO2 to the absorption stage.  A gas containing less than 20% SO2 may be absorbed in H2O and the aq. solution containing less than 2% SO2 is divided into 2 parts, one being stripped to produce SO2 which is then dissolved, together if desired with a gas containing more than 20% SO2, in the other part of the solution which is then stripped in two stages as before. A gas containing more than 20% SO2 at preferably less than 2,5 Kg./cm2. pressure, e.g. obtained from cellulose sulphite recovery, is fed in Fig. 1 at 4 and H2O at 5 into absorption tower 1 containing packing or plates.  Residual gas leaves at 6 and aq. SO2 solution leaves at 7 and is pumped by 8 via 9 and 11 to heat exchangers 10 and 12, and via 13 to primary stripping column 2. Steam is fed at 15 and, SO2 and H2O are fractionated in 16 where H2O vapour is condensed by cooling, e.g. by heat exchangers or unheated feed from 1.  SO2 leaves at 18 and passes to an optional condenser 17, which is cooled via 23 and 24 by, e.g. H2O at up to 60 DEG C., and liquid SO2 is fed via 19 to collector 20 feeding line 22, for drawing off SO2, and line 21, for returning some liquid to 2 for reflux. Hot residual solution leaves at 25 and is fed via heat exchanger 12 and line 26 to secondary stripping column 3 cooled by, e.g. heat exchangers.  Steam is fed at 27 and SO2 leaves at 29 to a partial condenser 28, cooled via 30 and 31 by H2O. SO2 vapour is returned through 32 to 1 or mixed with the feed gas at 4.  H2O is removed from 3 at 33 and is pumped by 34 via 35 to heat exchanger 10 and is removed at 36.  In Fig. 2 (not shown) a gas with less than 20% SO2, e.g. obtained by burning S or pyrites, is treated similarly to Fig. 1 but with an additional absorption tower to produce a more concentrated SO2 feed gas.  In Fig. 3 (not shown) feed gases used in Figs. 1 and 2 are simultaneously treated.
Patent GB-795791-A (GB)
Title: Improvements in or relating to the treatment of arsenical ores
IPC: C22B1/08
Filed: 1956-04-18
Abstract: An arsenical ore containing metals such as nickel, cobalt and iron is treated in aqueous medium with chlorine whereby the arsenic is converted either to a mixture of the trichloride and arsenic acid or wholly to arsenic acid, and after complete solubilization of the metals as chlorides, and if desired precipitation of arsenic from the solution, the residue is separated.  In a preferred embodiment an ore containing the above metals and gold is added to a solution of 4N hydrochloric acid and agitated, and chlorine gas is passed in at a rate such that the gas cannot be detected in the gaseous phase above the suspension (see below).  The temperature rises (or is brought) to 105 DEG  to 110 DEG  C. and arsenic trichloride which volatilizes is passed to a tower at sub-atmospheric pressure where it is contacted with water to form arsenious oxide, and hydrochloric acid which can be recycled or otherwise employed.  The solid arsenious oxide is separated from the slurry in which it is formed and the liquid treated in sequence with chlorine and a neutralizing agent such as a calcium or lead compound to obtain calcium or lead arsenate.  In the same or another vessel, if desired after dilution, the oxidation is continued after chlorine necessarily begins to appear in the gas phase above the slurry, either by continuing the use of chlorine, or using another oxidizing agent such as calcium hypochloride.  The oxidation may be controlled e.g. by observin the redox potential so that all the materials are solubilized.  If gold is present, this stage may correspond to the second step of Specification 795,790. The mixture is then diluted and neutralized (e.g. with calcium carbonate) and the precipitate comprising ferric arsenate is filtered off.  The quantity of arsenic removed as arsenic trichloride is preferably arranged to be such that the Fe/As ratio remaining in the solution is about unity, for precipitation of ferric arsenate on neutralization, but if desired an addition of iron (e.g. as ferric chloride) may also be made before neutralization.  If all the arsenic is converted to arsenic acid by oxidation, the Fe/As ratio should be similarly adjusted.  If it is desired to convert all the arsenic in the ore to arsenic acid, the presence of an excess of oxidizing agent and a lower temperature are used, or a reflux column provided.  The presence of chlorine in the gaseous phase may be detected for example by (a) continuously bubbling a portion of the gaseous phase through a ferrous sulphate or sodium carbonate solution and observing the redox potential between electrodes immersed therein (the redox potential increases sharply in the presence of chlorine), or (b) continuously bubbling a portion of the gaseous phase through a solution of 3 : 31-dimethyl-4 : 41-diaminodiphenyl which with chlorine gives a blue colour in a basic medium and a yellow colour in acid medium.
Patent GB-179418-A (GB)
Title: Amusement game, in which prizes are automatically delivered
IPC: A63F9/02
Filed: 1921-04-26
Abstract: 179,418. Haworth, T. April 26, 1921. Outdoor games.-Relates to target apparatus in which the targets are mounted on moving vehicles which are provided with mechanism, actuated by the targets, to deliver prizes to successful players. The vehicles are propelled along a truck 2, Fig. 3, by a connection 12 to an endless band which passes round pulleys 8 at each end of stand 1. A pendulum 18 having a bob 19 is depended from a bracket 17 supported by two beams 15 at the top of the stand. The player's object is to swing the pendulum so that the bob strikes a target 13 on the vehicle. This target, Fig. 5, is mounted on an upright 14, rigidly connected to a shaft 34, and furnished at its lower end with a cam 36, engaging a corresponding cam on a bearing 37. The rear end of the shaft 34 engages the forked end 38a of a lever 38 pivoted on a bracket 39 and engaging at its free end a stud 40 which projects from a pivoted tray 41. When the target is struck, the shaft 34 moves longitudinally and the lever 38 disengages the stud 40, thus allowing the tray 41 to tilt under the action of a spring 43. The prize carried on the tray falls on to the incline 4 down which it rolls to the player. In order that the pendulum may be controlled it is attached to a cam-plate 21, Fig. 4, which as it turns moves the pivoted arm 27, thus releasing the pawl 24, which, on the return of the pendulum, engages the ratchet teeth 22. The pendulum may be released by a cord 31 attached to the arm 24<a> of the pawl 24.
Patent GB-591575-A (GB)
Title: Improvements in or relating to anaesthetic apparatus
IPC: A61M16/10
Filed: 1945-05-14
Abstract: 591,575. Fluid - actuated valves. TALLEY, H. A. E. May 14, 1945, No. 12026. [Class 135] [Also in Group VI] Anaesthetic control apparatus in the form of a fluid-actuated valve comprises a regulator 2 containing, a diaphragm-actuated valve 7 for nitrous oxide, and a venturi-jet arrangement 9 to mix air with the nitrous oxide, the air inlet to the arrangement 9 being a tube 12 connected to the atmospheric side of the diaphragm. In use, the patient's inhalation. through tube 4 affects the diaphragm 3 which bears on levers 5 pivoted at 6 which in turn bears on valve 7. Gas passing venturi jet 9 draws air in through hole 10 and tube 12. If hole 10 is-blocked up, the negative pressure induced by the venturi arrangement is transferred to the atmospheric side of the diaphragm and valve 7 cannot open.
Patent GB-827468-A (GB)
Title: Improvements in and relating to the production of modified aminoplastic resins
IPC: C08G12/40
Filed: 1956-04-19
Abstract: Aminoplastic resins are prepared by reacting at elevated temperatures: (i) urea or an aminotriazine; (ii) paraformaldehyde; (iii) an unsubstituted aliphatic monohydric alcohol of 1-4 C; and (iv) a saturated or monoethylenically unsaturated aliphatic monocarboxylic acid of more than 10 C, or a mixture thereof, such acids being free from any polyethylenically unsaturated acids, or abietic acid, or a mixture thereof. Aminotriazines mentioned are melamine, ammeline and ammelide; alcohols mentioned are ethanol and methanol; acids mentioned are stearic, oleic and palmitic.  The resins are soluble in petroleum ether, benzene, cyclohexane, toluene, trichlorethylene, and tetrachlorethylene, and if modified may be soluble in or form an emulsion with water or acid.  The resins may be hardened by acids or acid-forming substances.  Uses.-As impregnating and film-forming substances especially for waterproofing textiles.
Patent GB-592377-A (GB)
Title: Improvements in or relating to telephone handsets
IPC: H04M1/02
Filed: 1945-05-14
Abstract: 592,377. Telephone instruments and sets. TELEFONAKTIEBOLAGET L. M. ERICSSON. May 14, 1945, No. 12100. Convention date, April 6, 1944. [Class 40 (iv)] A telephone handset of the type comprising a contact spring set for switching the instrument either to the speaking position or to the position for receiving a calling signal is provided with a movably mounted cover-plate 5, located in front of the microphone 2, which moves within the microphone casing when the handset, with the receiver and microphone facing the support, is placed in its position of rest, the edge 13 of the plate engaging an arm 14 to operate the spring set 4 and switch the set to the position for receiving a calling signal. When the set is removed from its support the plate moves out from the casing and the set is switched to the speaking condition. The cover plate 5 has secured to one of its edges a spindle, seating in a socket 7 formed integrally with one half 1 of the handset casing and slotted to allow limited angular movement of the plate. Each squared end 9 of the spindle is mounted in one end of a spiral spring 11, the other end 12 of which bears against one edge of the socket 7, to urge the plate to the open position corresponding to the speaking position. The arched design of the cover plate ensures its closing under pressure from any direction. The socket 7 may alternatively be an individual part, or the microphone may be fixed within the cover-plate and move with it. A gravitationally operated locking device may be provided to prevent unintentional closing of the cover plate when the handset is held in the speaking position,
Patent GB-541432-A (GB)
Title: Improvements in or relating to tipping trucks, lorries and the like
IPC: B60P1/14
Filed: 1940-07-25
Abstract: 541,432. Tipping-vehicles. HENDERSON, W. M. July 25, 1940, No. 12134. [Class 108 (i)] The body of a tipping vehicle is tipped by tensioning a rope which extends downwardly from a winch, engages beneath the end of the body and is fastened to a movable anchorage member which acts on the body to accelerate the final tipping movement. A rope 2 extends from a winch 3 mounted on the forward part of the vehicle chassis, beneath an abutment 4 on the body 1 and is attached to the crossbar 10 of a pair of arms 5 pivoted at 7 to the chassis. When the rope is tensioned it straightens beneath the end of the body which is thus tipped about its axis 6. At the same time rollers 9 on the bar 10 travel on an inclined cam member 8 secured to the body and act substantially to accelerate the final tipping movement. A spring 11 which is compressed against a fixed abutment 15 towards the end of the tipping movement acts to initiate the return movement when the rope is slackened. The winch may be mounted on an upstanding structure located on the chassis 12 between the forward end of the lorry and the driving engine of the vehicle by which the winch is driven, as described in Specification 540,074, [Group XXX].
Patent GB-1374845-A (GB)
Title: Method of and apparatus for investigating the luminescence of optically active molecules
IPC: G01N21/19
Filed: 1972-02-03
Abstract: 1374845 Polarizing apparatus YEDA RESEARCH & DEVELOPMENT Co Ltd 3 Feb 1972 [26 Feb 1971] 12140/74 Heading G2J The description is substantially the same as that of the parent Specification 1374844, but the claims are directed to the calibrating device, Figs. 2, 3, (not shown).
Patent GB-114570-A (GB)
Title: An Improvement in Furnaces for Heating Ingots.
Inventor: DAVIS GEORGE JAMES
IPC: F27D3/02
Filed: 1917-08-27
Abstract: 114,570. Davis, G. J. Aug. 27, 1917. Metal - heating furnaces.-An ingot track or skid-way for a heating furnace consists of a bar or rail A with a knee or bend A<2> at one end, and having embedded in it a continuous pipe B for the flow and return of cooling- water. The upper edges of the bar are chamiered, as shown in Fig. 4, to provide a narrow bearing-surface for the ingots. The pipe is preferably of wrought iron, and the body of the bar of cast iron.
Patent GB-494348-A (GB)
Title: Improvements in or relating to containers, more particularly for electric accumulators, storage batteries and the like
IPC: H01M50/147
Filed: 1937-04-29
Abstract: 494,348. Batteries. OLDHAM & SON, Ltd., and HOLT, JUN., H. April 29, 1937, No. 12254. [Class 53] A cover for the container of an accumulator is of inverted-cupshaped form arranged to project above the upper edge of the container so as to occupy the space normally occupied by the plate post terminals the terminals passing through the cover in a horizontal or lateral direction. The lid 1 has flanges 9 at its lower edge by means of which it is fixed in a recessed part 29 of the container 28 and is so arranged as to provide an air space above the level of the top of the container. The plate post terminals 22 project into the space formed in the cover and are fitted with internally threaded sleeves 24 to receive clamping screws 25 for external connection. They are clamped by nuts 26 to the cover and pass laterally or obliquely through the sides of the cover which, at these points, is recessed in order that the terminals may not project beyond the area of the container, Fig. 2 (not shown), when looked at in plan. The filling plug may be either of the screw type provided with slots for ease of turning or may have a bayonet-type fitting.
Patent GB-1261346-A (GB)
Title: Improvements in or relating to the detection of magnetic discontinuities
Inventor: JOINSON ALAN BRAID
IPC: G01N27/82
Filed: 1968-03-13
Abstract: 1,261,346. Magnetic flow detectors. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. March 5, 1969 [March 13, 1968], No.12306/68. Heading G1N. In a flow detector comprising a horseshoe magnet 1 for magnetizing a specimen 2 and a sensor 5 for measuring the tangential component of the leakage field, a Hall plate 3 is provided in the fluxpath between the magnet and the specimen for controlling the output of an amplifier 6 to nullify the effect of gap variation. In Fig.2, the sensor 5 is a magnetic tape recording head and the Hall plate 3 is arranged in a negative feedback loop of the amplifier 6. 4 denotes a spacer. Alternatively, Fig.3 (not shown) the sensor 5 may be a Hall plate, or preferably a stack of three Hall plates connected so that their resultant output is equal to the sum of the signals from the two outer plates less twice the signal from the centre plate, the control current being controlled by the Hall plate 3.
Patent GB-1472882-A (GB)
Title: Preparation of foams
IPC: C08J9/04
Filed: 1974-03-20
Abstract: 1472882 Foamed thermoplastic ionic polymers EXXON RESEARCH & ENG CO 20 March 1974 [29 March 1973] 12310/74 Heading C3C A foamed polymer is made by mixing an ionic thermoplastic polymer comprising 0À2-20 mole per cent pendant ionic groups which are sulphonic or phosphonic acid groups neutralized to a degree of at least 90% to form an ionic polymer with 0À1-50 moles/mole of ionic groups of a volatile polar compound which has a dipole moment of greater than 0À9 debyes, a b.p. of less than 150‹ C. at atmospheric pressure and which is a plasticizer for the ionic groups and not the polymer back bone, and a foaming agent which may itself be the polar compound, heating the mixture to a temperature sufficient to convert the foaming agent to gaseous form and cooling to recover the foamed polymer. In the examples neutralized sulphonated polystyrene or t-butylstyrene/ isoprene copolymer containing sodium sulphonate groups were mixed with benzene, methanol, magnesium oxide, dioctyl phthalate, toluene, a mixture of paraffinic and naphthenic hydrocarbon oils and/or isopropanol and the mixtures were foamed by heating.
Patent GB-811863-A (GB)
Title: Burner means for the atomization of liquid fuel by compressed air
IPC: F23D11/10
Filed: 1956-04-23
Abstract: 811,863. Liquid fuel burners. EBERSPACHER, W., and EBERSPACHER, M., [trading as EBERSPACHER, J., [Firm of]]. April 23, 1956 [June 10, 1955], No. 12381/56. Classes 75(1) and 75(3) In a burner in which liquid fuel is atomized by compressed air, an air compressor 5, a rotating fuel-air nozzle 6 and a fan wheel blower 7 are mounted on the shaft of a driving motor 1, the fuel being fed to the nozzle through a bore 10 in the driving shaft and the atomizing air being fed to an annular space 29 around the driving shaft. The nozzle 6 is secured to an end of the driving shaft and forms therewith the annular space 29. The air compressor 5 is constructed as a slide valve pump and has an air intake 15 and an exhaust channel 16 leading to ports 28 in the nozzle 6. The fan wheel blower 7 is secured to the nozzle 6 and is cup shaped to enclose part of the air compressor. The driving motor is endosed in a casing 8 which terminates in an orifice 9 surrounding the nozzle 6 and leading to combustion chamber 21. Air passes from an inlet 20 in the casing 8 along the annular space 14 between the casing and the motor and branches to the compressor 5 and to the air blower 7. A worm gear driving a fuel pump 2, an electromagnetic valve 3 and an electric fuel heater of adjustable or fixed resistance are mounted at the end of the motor remote from the nozzle and air compressor. The burner may be mounted in a casing, Fig. 4 (not shown), through which air to be heated is passed by a fan mounted on an extension of the end of the driving shaft remote from the nozzle. An annular heat exchanger through which the hot exhaust gases flow surrounds the burner. An insulated hollow flared apertured electrode may be mounted on the end of the rotating atomizing nozzle to co-operate with a fixed electrode.
Patent GB-786292-A (GB)
Title: Improvements in and relating to ball or roller bearings
Inventor: JACOBS ERIC WILLIAM
IPC: F16C33/66
Filed: 1955-04-29
Abstract: 786,292. Cleaning bearings. ENGLISH ELECTRIC CO., Ltd. April 26, 1956 [April 29, 1955], No. 12458/55. Class 12 (1). A ball or roller bearing 12 has a bore 11b formed in the lowest point of the outer race 11 through which lubricant or cleansing liquid supplied to the bearing may be drained off. A trough-shaped member 15 is attached to one side of the outer race 11 and a plate 17 is attached to the other side thereof so that cleansing liquid or oil supplied to the trough 15a passes between the inner race 10 and outer race 11 and is discharged through the bores 11b and 15b. In a modification, a discharge port 21b is located below the bearing in a housing 24. A cover plate 28 has inlet and outlet holes fitted with screws 33, 34 respectively. Liquid entering inlet 28a passes through a filter 32 before flowing between the races 20, 21 into the space 31 from which it is discharged through the port 21b.
Patent GB-829564-A (GB)
Title: Bonding rubber to polyurethane
IPC: C08J5/12
Filed: 1956-04-24
Abstract: A bonding material comprising an organic isocyanate, an aromatic nitroso compound, and a polymeric film-forming agent selected from synthetic resins and natural and synthetic elastomers is interposed between an olefinic rubber and a polyurethane body and the assembly is heated under pressure to bond the rubber to the polyurethane, the isocyanate being at least available at the interface between the bonding material and the polyurethane, the nitroso compound being at least available at the interface between the bonding material and the rubber, and the isocyanate and/or the nitroso compound being incorporated in the film-forming agent.  The olefinic rubber may comprise natural rubber, polybutadiene, butadiene-styrene or butadiene-acrylonitrile or butadiene-vinyl pyridine copolymer, a copolymer of polychloroprene and an ethylenically unsaturated compound, polychloroprene, or butyl rubber.  The isocyanate included in the bonding material may be an alkyl or aryl isocyanate, or a polymethylene, alkylene, alkylidene, cycloalkylidene, or aromatic di-, tri-, tetra-, or other olyisocyanate.  The nitroso compound is preferably aromatic, and a dinitroso compound is particularly preferred, e.g. a meta- or paradinitroso benzene or naphthalene.  The aromatic nitroso compound may also be substituted by a radical or radicals selected from alkyl, arylalkyl, arylamine, arylnitrosamine, and halogen groups.  Numerous examples of isocyanate and nitroso compounds are specified.  The nitroso compound may be applied to the rubber surface and the isocyanate to the polyurethane or firstly the isocyanate and then the nitroso compound may be applied to the polyurethane, or firstly the nitroso compound and then the isocyanate may be applied to the rubber surface, or an isocyanate-dinitroso compound mixture is applied to the substrate and/or to the rubber. Alternatively the bonding material may be applied as a preformed sheet containing the film-forming agent. Several film-forming materials are specified including polychloroprene, brominated poly-2,3-dichlorobutadiene-1,3, phenolic resins, epoxy resins, polyurethane, and phosgenated aniline-aldehyde resin, the two latter substances serving also to provide the isocyanate component of the bonding material.  A catalyst such as a tertiary amine may also be included in the bonding material for accelerating the action of the isocyanate. Preferably the isocyanate component constitutes 50 to 60% by weight and the nitroso groups in the nitroso compound about 0.9 to 22% of the solids in the bonding material.  In one of the many examples a surface of an uncured polyurethane rubber is coated with a mixture comprising 100 parts by weight polyurethane, 50 parts polyisocyanate produced by phosgenation of aniline-formaldehyde resin, 25 parts p-nitroso diphenyl amine, and 567 parts methylethyl ketone.  Unvulcanized GRS synthetic rubber compound is applied to the coated polyurethane surface and the assembly is vulcanized under pressure and then heated in an oven.  Specification 822,725 is referred to.