baber/WOPTO huggingface dataset:
Patent GB-1409456-A (GB)
Title: Purification of sulphuric acid from mercury
IPC: C01G13/00
Filed: 1973-05-17
Abstract: 1409456 Removing mercury from sulphuric acid BOLIDEN AB 17 May 1973 23514/73 Heading C1A Hg is removed from sulphuric acid by absorption on finely divided sulphur produced in situ by adding a thiosulphate to the acid. The Hgcontaminated H 2 SO 4  may have been formed when Hg and SO 2 -containing gases, produced on roasting sulphide ores, are dried using H 2 SO 4  (see Example 3). Na 2 S 2 O 3  may be used in an amount of from 0À1-2 kg./c.<SP>3</SP> acid. The acid may have a temperature of 10-100‹ C. and a concentration of 70-95%. by wt. The precipitated Hg-containing sulphur may be separated from the acid by floatation, centrifugation or filtration. The flotation may be aided by a foaming agent, e.g. aminoacetate or a fatty alcohol polyglycol ether, in an amount of 1-15 g./ton acid, or a collector in an amount of 1-10 g./ton acid. Air flotation may also be used, particularly by adding the air to water used for diluting the acid.
Patent GB-206620-A (GB)
Title: Improvements in amplifying arrangements for telephonic currents
IPC: H04B1/58
Filed: 1922-08-30
Abstract: 206,620. Strauss, S. Aug. 30, 1922. Thermionic amplifiers.-In an amplifier for use at a telephone substation or private branch exchange, in which one or two thermionic valves in cascade may be switched in at will, the middle point of the primary or the input transformer is connected to the secondary of the output transformer, and to the source of filament heating current, in order to prevent whistling in the receiver. Fig. 1 shows substation apparatus in a local battery system, with switches D, H, I, J for connecting up the amplifier. The middle point F of the primary PI of the input transformer is connected to the secondary S3 of the output transformer by a lead O, and the resistance R balances the resistance of the line so that only a small current flows through the winding S. One or two of the valves V, V1 may be used according to the position of a multiple-contact key Ta. The invention is also described with reference to two standard central battery systems, in which the amplifier battery may be used for feeding the microphone. Fig. 6 shows the application to a P.B.X., the amplifier (not shown) being included in the cord circuit, and an additional wire L3 being provided for each subscriber corresponding to the lead O, Fig. 1, with suitable plugs.
Patent GB-956599-A (GB)
Title: Plastics bags and like containers
Inventor: JENNINGS PETER THOMAS
IPC: B65D30/24
Filed: 1961-06-29
Abstract: 956,599. Inflatable cushions. BRITISH VISQUEEN Ltd. June 6, 1962 [June 29, 1961], No. 23556/61. Heading A4M. [Also in Divisions B5 and B8] The overlapping edges 2, 3 of a sheet of plastics film folded to form a tube are seamed longitudinally at 5, 6, 5<SP>1</SP>, 6<SP>1</SP>, and transversely at 8, 9, to leave an opening 7 between the overlaps for inflating the cushion thus formed. The seams 5<SP>1</SP>, 6<SP>1</SP>, 9 may be omitted so that the end seam 10 of the bag forms one margin of the filling opening. The seams 8, 9 need not be at right angles to the seams 5, 6. The seams may be formed, simultaneously or in sequence, by suitably shaped heat sealing bars operating on the tube 1 as it is advanced continuously over a mandrel about which it is folded. The bags may be separated from the continuous length during the formation of the end seams 10, 11 or subsequently, and may be joined together by tearing lines. Suitable materials are polythene, polypropylene and polyvinyl chloride which latter may be seamed by high frequency electric welding.
Patent GB-1060759-A (GB)
Title: Machine for extracting fibres from coconut shells
IPC: D01B1/12
Filed: 1964-06-08
Abstract: 1,060,759. Obtaining fibres from coconuts. O. ANGLEITNER. June 8, 1964 [Dec. 30, 1963], No. 23657/64. Heading DIN. Fibres are extracted from water-soaked shells by passing pieces of the shells between squeeze rolls and immediately thereafter transferring the shell pieces to an endless element, such as a chain, running against the periphery of a disc so that portions of the pieces are gripped and conveyed while other portions are combed by a hackling drum. From the first chain and disc conveyor the pieces are passed to a second for the hackling of those portions formerly gripped. Shell pieces are fed to squeeze rolls 5, 6 between V-belts 1, 2, 3 received in grooves in the squeeze rolls. Following the squeeze rolls are a pulley 11 over which the chain 10 passes and an auxiliary roller 16 that aids in the transfer of shell pieces to the chain between which and the disc 14 they are gripped whilst being combed by the hackling drum 15. The chain 10 passes over a pulley 12 fixed on the same shaft as a pulley 21 associated with a chain 18. Because of the overlap of the chains the shell pieces are automatically transferred in order to be combed from both ends. The chains are tensioned by pulleys 13, 23.
Patent GB-146014-A (GB)
Title: Improvements in or connected with couplings
IPC: F16L37/20
Filed: 1919-09-26
Abstract: 146,014. Gullick, G. M. Sept. 26, 1919. Couplings, disconnectible. - A disconnectible spigot-and-socket coupling for connecting two lengths of pipe comprises a tubular socket part connected as by a flange 2 to a supply of fluid and formed with lugs 4 to which are pivoted on oppcsite sides double links 5 of outwardly bowed form, each carrying at their outer ends and between them a cam device 8 upon a spindle 7 adapted to be turned by levers 9 to cause the cams 8 to engage lugs 14, with concave surfaces formed on the spigot portion 12 of the coupling over which a flexible pipe is placed. As shown in Fig. 5, the cams 8 and lever arms 9 are each keyed to the spindle 7, the latter in a detachable manner. The cams 8 have flat sides 8<x> adjacent the coupling. When the coupling is connected up by pressing the arms 9 inwards, these arms may be held to the position shown by a bowed link 10 and a pin 11, but the arms 9 tend to keep the coupling locked, since in the locked position the axes of the spindles 7 are nearer the axis of the coupling than the points of contact of the cams 8 with the lugs 14. For coupling two lengths of hose, projections 4<x>, 5<x> may be formed on the lugs 4 and links 5 respectively. The bore of the coupling is of uniform diameter throughout.
Patent GB-668158-A (GB)
Title: A process for producing chlorine-containing organic compounds and the chlorine-containing organic compounds so produced
IPC: C07C17/08
Filed: 1950-09-28
Abstract: "Abnormal" addition of hydrogen chloride to organic compounds containing one or more olefinic double bonds and at least 3 carbon atoms is effected under the influence of a silent electric discharge and in the presence of hydrogen bromide.  The discharge may be effected by an alternating current of 50-500 cycles/second and under 10,000-20,000 volts.  An excess of hydrogen chloride is preferably present and inert diluents, e.g. nitrogen, methane and other hydrocarbons may also be added.  The process may be effected under elevated temperature, and may be applied to the treatment of propene, 1-butene, 1-pentene, 1-hexene, 1-octene, 1-decene, 1-dodecene, butadiene, isoprene, allyl chlorides, methallyl chlorides, mixtures thereof and mixtures of alkenes and alkanes.
Patent GB-749507-A (GB)
Title: Improvements in or relating to copolymers of styrene compounds
IPC: C08F212/14
Filed: 1952-09-23
Abstract: In a process for the preparation of copolymers from (a) styrene, substitution products, e.g. chlorinated styrene or derivatives thereof such as a -methyl styrene, (b) di- or poly-isocyanates and (c) free hydroxyl group-containing esters of polyhydric alcohol and a fatty acid containing at least two ethylenic linkages in the molecule, (a) may be copolymerized with (b) in the presence of (c), with the reaction product of (b) and (c), or alternatively a copolymer of (a) and (c) may be reacted with (b).  The esters, which may be drying or semi-drying oils, and partially polymerized, contain the free hydroxyl groups present either unesterified in the polyhydric alcohol, e.g. glycerol, pentaerythritol or polyglycols, or in a hydroxylated fatty acid, or introduced by the alcoholysis of e.g. linseed oil. Alkyd esters of polybasic acids such as phthalic and maleic acids may also be used.  The isocyanates preferably contain two or three isocyanate groups, or addition products of toluene diisocyanate with a polyhydric alcohol, e.g. hexanetriol may be used with or without a phenol stabilizer.  Compounds such as phenolformaldehyde, urea-formaldehyde, non-styrenated alkyd and natural resins containing hydroxy or other groups which react with isocyanates may also be incorporated in the reaction mixture during or prior to the reaction with the polyisocyanate. Copolymerization may be effected by heat in the presence of a solvent, with or without a catalyst and a regulating agent such as a terpene.  The styrene and/or the polyisocyanate may be added to the reaction mixture during the course of the reaction and the final reaction with the isocyanate may take place on an object or surface.  In Examples (1) a mixed alkyd resin of varnish linseed oil-glycerol ester and a raw wood oil-pentaerythritol ester, and phthalic anhydride, (2) and (3) alkyds of varnish linseed oil, wood oil, glycerol, pentaerythritol, ethanolamine and phthalic anhydride, are reacted in xylol with a toluene-diisocyanate hexanetriol addition product and finally with styrene in the presence of a peroxide catalyst, (4) abietic acid-linseed oil fatty acids and glycerol are reacted in toluene with a diisocyanate-hexanetriol addition product, styrene added drop by drop and the mixture heated, and (5) urethane-linseed oil in a xylene-turpentine solvent is reacted with styrene.  The copolymers, for example in solution, may be used as coating compositions. Specifications 565,777, [Group III], 573,809, [Group IV], 580,912, [Group IV], 580,913, [Group III], 609,750 and 611,109 are referred to.
Patent GB-1400834-A (GB)
Title: Laminated structural products of glass fibre reinforced polyester
IPC: B29C70/86
Filed: 1972-05-22
Abstract: 1400834 Junction-pieces; tubes NITROKEMIA IPARTELEPEK 22 May 1972 23895/72 Headings F2G and F2P [Also in Division B5] A structural element comprises spaced apart polyester-impregnated glass fibre panels between which there is a prestressed insert of a metal wire coil or a braid of coiled metal wire, adjacent surface of the coil or braid and the panels being rigidly bonded by polyester resin. As shown a braid 1 is bonded to glass cloths 2 and glass mats 3 by the impregnant polyester 4, and is formed to enable fluid-flow channel-forming members to be inserted into the space between the panels. In a further embodiment (Fig. 3, not shown), a plurality of coils are disposed side-by-side between the panels and a layer of glass cloth impregnated with polyester partially surrounds and is bonded to each coil by being passed over one coil and under the adjacent coils. In a modification (Fig. 2, not shown) the two panels of Fig. 1 are replaced by a tubular glass fibre-polyester layer, which is rigidly bonded to and embeds a prestressed reinforcing tubular coil of metal wire.
Patent GB-658085-A (GB)
Title: Improvements in or relating to coin-freed article-delivery mechanism
IPC: G07F11/16
Filed: 1949-09-16
Abstract: 658,085. Coin-freed article-delivery apparatus. PAMMENT, F. T. Sept. 16, 1949,. No. 23907. [Class 27] Mechanism for delivering drinking cups from a coin-freed apparatus comprises a series of platforms 1, 2 and 3 on which the cups are stored between rods 12 radiating from a central vertical shaft 11. Openings 5, 7 and 8, one in each platform, are out of alignment so that, at each step-wise rotation of the shaft 11, a cup is passed from each platform and through the opening to the platform below, whilst that from the lowermost platform passes out to a delivery shoot 6, the platforms being depleted in turn from the uppermost downwardly. The shaft 11 is fitted with a ratchet wheel 13 by which it is rotated step-wise by means of a pawl 14 from the associated coin-freed apparatus.
Patent GB-1403115-A (GB)
Title: Umbrellas
IPC: A45B25/14
Filed: 1973-05-21
Abstract: 1403115 Automatically opening and closing umbrellas IDEAL KK 21 May 1973 [19 May 1972 20 Dec 1972] 24067/73 Heading A4P An umbrella comprises a shaft having a main part 1, Fig. 2, slidably receiving upper, intermediate and lower parts 2, 3, 4, a crown 6 fixed to the part 2 and carrying ribs 5, a ring 11 fixed to the upper end of part 1 and carrying stretchers 13 supported by rods 16 pivoted to a slider 14, and resiliently flexible spokes 25 pivoted to ribs 5 and to a slider 23, the umbrella being opened by pressing a latch 36 to remove a tip 36a from hole 1a in part 1 whereupon a spring 10 urges parts 3 and 4 apart and a spring 21 acts between a ring 20, fixed by a pin 19 to part 3, and slider 14 to raise slider 14 and open the ribs 5, spokes 25 being flexed during opening to a position to urge the ribs downwards, Fig. 6, closing of the umbrella being effected by the energy stored in spokes 25 after operation of a latch 38 to remove projection 38a from hole 1b in part 1 and thereby release the locking together of parts 1 and 4. Following operation of latch 38, part 1 at first moves upwards relative to part 4 under the action of spring 10 and spring 21 is also able to expand so that both springs 10, 21 assume a state of substantially zero residual force, in which state the energy stored in spokes 25 is able to close the umbrella. The umbrella is brought from this closed position to a closed position in which it is in readiness for opening by pushing the shaft ends together until projection 38a locks parts 1 and 4 together again and tip 36a locks slider 23 in the closed position in which a tip cap 40 and a recess in slider 23 co-operate to prevent operation of latch 38. In a modification, Figs. 11-16 (not shown), the latch 38 is operated by moving a tip  cap sleeve 40a manually upwards. The spokes 25 each comprise a respective pair of strips or rods 26, 27, Fig. 6, connected at a common pivot 24 on the corresponding rib 5 and by a cramp 28a intermediate their lengths, each rod or strip 26, 27 of the pair being connected at 28 to the adjacent rod or strip 27 or 26 of the pair associated with an adjacent rib 5 and such connected adjacent rods or strips being pivoted together at a ring 22 of slider 23.
Patent GB-599475-A (GB)
Title: Improvements in and relating to turbine bucket wheels and the like
IPC: F01D5/30
Filed: 1945-09-18
Abstract: 599,475. Turbine blades. BRITISH THOMSON-HOUSTON CO., Ltd. Sept. 18, 1945, No. 24086. Convention date, Sept. 21, 1944. [Class 110 (iii)] A turbine blade has an inner core and a shell spaced from and surrounding the core. The shell is preferably made from a material having high temperature resistance and high compressive strength, such as that known under the Registered Trade Mark " Stellite." The core is made from any suitable material, such as a ferrous alloy, that can be easily welded. Each blade has a core 16 provided with an integral cover 17 and secured to the rotor disc 13 by a weld 15. The shell 19 is held between the cover 17 and an inner perforated ring 20. The latter acts as a spacer between adjacent cores. The shell is spaced from the core by means of projections, Fig. 6, and has inner and outer flanges 22, 23 which protect the cover 17 and ring 20 from contact with the working fluid. The flanges have upturned portions 24, 25 by which they are spaced from the cover 17 and ring 20. The covers 17 of adjacent blades abut to form a continuous shroud ring, and the outlet edges of the covers and of the flanges 23 are cut away in saw-tooth fashion to reduce weight. Intermediate 'flanges 28 may be employed to divide the blade passages into inner and outer portions through which two fluids of different temperature are passed. A cooling medium may be circulated through the space between the core and shell. The core may be formed integral with the rotor disc, the cover 17 being formed separately and subsequently welded to the core.
Patent GB-1063074-A (GB)
Title: Disc brakes
Inventor: RIDDY FREDERICK THOMAS
IPC: F16D65/18
Filed: 1962-11-08
Abstract: 1,063,074. Disc brakes. GIRLING Ltd. Feb. 4, 1964 [Nov. 8, 1962; Dec. 8, 1962], Nos. 24152/66 and 24153/66. Divided out of 1,063,073. Heading F2E. In a disc brake wherein a slidable or, as shown, a pivoted floating caliper 42 carries a directly actuated pad 64 and an indirectly actuated pad 44, the latter having limited circumferential movement, the pad 64 is actuated through a strut 65 by an actuator 58 operating a first order actuating lever 55 pivoted to the caliper 42 at 56. The caliper is provided with bell-crank levers pivoted thereto and having ends engaged by circumferential movement of pad 44 to rotate the appropriate bell-crank lever, one being provided for each direction of rotation of the disc, the other end 47 or 48 respectively of the appropriate bellcrank lever engaging the actuating lever 55 to augment the force on pad 64 and provide a self-servo action. The threaded strut 65 has an external nut 62 with ratchet teeth 66 engageable by a pawl 67 on the actuating lever 55 to provide automatic wear adjustment. A cam 69 may be rotated by a hand brake lever to actuate lever 65 for parking purposes.
Patent GB-1388635-A (GB)
Title: Dihydroxy anthraquinones
IPC: C09B1/08
Filed: 1972-05-23
Abstract: 1388635 Dihydroxy anthraquinones SANDOZ Ltd 23 May 1972 [26 May 1971] 24207/72 Heading C2C A process for the production of 1,5- and 1,8- dihydroxyanthraquinone comprises heating a mixture of 1,5- and 1,8-dialkoxyanthraquinones in which the alkoxy groups contain from 1 to 3 carbon atoms with a strong mineral acid in acetic acid. Preferably the 1,5-dihydroxyanthraquinone is separated from the reaction mixture at a temperature of at least 80 C. and the 1,8-dihydroxyanthraquinone by cooling to a temperature below 80 C.
Patent GB-644269-A (GB)
Title: Mounting and suspension of steering road wheels of motor vehicles
Inventor: WATTS LAURENCE DEREK
IPC: B60G11/14
Filed: 1948-09-15
Abstract: 644,269. Vehicle suspensions. SCAMMELL LORRIES, Ltd. Sept. 15, 1948, No. 24215. [Class 108(ii)] In a suspension for a steerable road wheel, the wheel is mounted on a cranked shaft, the shaft being carried by the lower end of a suspension column which houses a suspension spring acting on said shaft, the suspension column being carried by the drop arm of the steering box. As shown, the drop arm 9 is bolted to the suspension column 10 housing the suspension spring 11 whose lower end bears on the piston 12 connected by link 13 and arm 14, Fig. 3, to the shaft 15. The shaft 15 is rotatably mounted and has an external cranked portion 20 and axle 19 on which the road wheel is rotatably mounted. Road shocks are absorbed by rotation of the shaft 15 and displacement of the piston 12 and spring 11. The piston 12 is provided with a hole 12a in its crown, and by filling the whole casing 10, 16 with oil, provides hydraulic damping. A filling plug 9b may be provided in that portion of drop-arm 9 which forms a top closure for the suspension column 10. Excessive movement of the piston 12 and arm 14 is checked by a rubber buffer 16: Two or more springs 11 may be used, arranged concentrically. As shown, the invention is applied to the single steering wheel of a three-wheel truck, but it is stated that the invention may be applied to a four-wheel vehicle having two steering wheels, in which case one steering box is used, but there would be two drop arms 9, one for each wheel, connected by the usual transverse steering link.
Patent GB-261152-A (GB)
Title: Improvements in open grates or stoves
IPC: F24B1/18
Filed: 1925-09-29
Abstract: 261,152. Corthesy, J. H. Sept. 29, 1925. Combined solid-fuel and gas stoves; open fireplaces; smoke, consuming; grates; air supply for combustion; lighting fires. - Combustion products from an open grate or a stove are mixed wholly with town or other combustible gas and the resultant mixture is burnt. In the open fireplace shown in Fig. 2, combustible gas is supplied to a mixing-chamber d extending across the front, into which gases rising from the fire on the grate b are also drawn, the resultant mixture being ignited at the burner orifices f. The flames are deflected by a surface h into a chamber g before passing to the flue i. A series of such deflecting surfaces and chambers may be provided. Gases not passing into the mixing- chamber d are consumed by the flames from the orifices f. A gas burner j is provided for igniting, and if necessary assisting the combustion of, the fuel. Heated air may be supplied through a passage k to the flames in the chamber g. In order to decrease the amount of gas supplied in proportion to the increase in incandescence of the fuel the grate bottom b may be pivoted on centres b<1>, as shown in Fig. 5, and be provided with a conterweight b<2> which causes it to rise as the fuel is consumed. In rising it actuates, through an inclined surface bearing on a roller n carried by an arm m, the gas cock and decreases the gas supply. A stove having a closed fuel receptacle is also described, at the back of which is a chamber in which the fuel gases are mixed with combustible gas and air.
Patent GB-981816-A (GB)
Title: Trichlorobenzyloxyalkanols and a method of controlling weeds therewith
Inventor: NEWCOMER JACK SAMUEL
IPC: C07C17/12
Filed: 1961-07-05
Abstract: The invention comprises compounds of formula <FORM:0981816/C2/1> and esters thereof, wherein X is an at least C2 straight or branched-chain alkylene or oxyalkylene group optionally substituted with one or more hydroxy groups, the oxyalkylene group containing one or more ether oxygen atoms and a method of making them by reacting a trichlorobenzyl chloride (which may be an isomeric mixture) with a molar excess of glycol HO-X-OH in presence of an acid acceptor. Specified individual compounds are 2-(2,3,6-trichlorobenzyloxy-) ethanol, its trichloroacetate and 2,4 - dichlorophenylacetate; 2 - (2,3,6-trichlorobenzyloxy-) propanol and 2-(2,4,5-trichlorobenzyloxy-) ethanol and propanol, but the respective products of reacting an isomeric mixture of trichlorobenzyl chlorides with various glycols are also exemplified. Starting materials.-Trichlorobenzyl chlorides are produced by heating trichlorotoluene or a mixture of trichlorotoluenes with chlorine under irradiation by a mercury vapour lamp.ALSO:A non-flammable resin composition is prepared by melting together at 186 DEG  C. polyvinyl chloride and 2-(2,3,6-trichlorobenzyloxy)-ethyl trichloroacetate (Example 9).ALSO:Herbicidal compositions comprise, besides the usual inert diluent or vehicle compounds of formula <FORM:0981816/A5-A6/1> and esters thereof, wherein X is an at least C2 straight or branched chain alkylene or oxyalkylene group optionally substituted with one or more hydroxy groups, the oxyalkylene group containing one or more ether oxygen atoms.  The compositions may contain also tri- or tetrachlorophenylacetic acids, sodium or calcium borates, 2,4-D, sinazine, monuron, feruron, diuron, chlorates, petroleum oils, hexachlorocyclopentadiene, pentachlorophenol, dinitro-o-alkylphenols, sodium trichloroacetate, sodium 2,2-dichloropropionate, metal dimethyldithiocarbamates, ethylene bis-(dithiocarbamates), benzene hexachloride, chlordane, urea and ammonium nitrate.  The invention comprises also a method of controlling the growth of weeds by applying a phytotoxic amount of a compound of the above formula to the locus of the weeds.  Specified forms are emulsions, solutions, powders, wettable powders, granules, pellets and aqueous dispersions. Non-ionic and anionic surface-active agents are employed in such compositions.