baber/WOPTO huggingface dataset:
Patent GB-1277304-A (GB)
Title: Process for recovering a pure aqueous solution of ferric chloride and an aqueous solution of metal chlorides free from ferric chloride
IPC: C22B3/26
Filed: 1969-09-16
Abstract: 1277304 Solvent extraction of iron compounds KANTO DENKA KOGYO CO Ltd 16 Sept 1969 [19 Sept 1968 20 Sept 1968] 45616/69 Headings C1A and C1N Ferric chloride is separated from an aqueous hydrochloric acid solution of metal chlorides by extracting the solution with a mono-ketone or an ether having from 4 to 10 carbon atoms or by a mixture of said ketones or ethers in an inert carrier solvent immiscible with the aqueous hydrochloric acid solution, in a ratio of two moles of ketone or ether per mole of ferric chloride. The ferric chloride passes into the organic phase and is recovered by extracting the organic phase with an aqueous solvent. The distribution of ferric chloride in the organic phase may be improved by the provision of an excess of chloride ions in the aqueous solution, and/or by the presence of the other metal chlorides in the solution and, if necessary, by the addition of HCl to the solution. The carrier solvent may be a hydrocarbon or chlorinated hydrocarbon. Particular reference is made to the use of the process for recovery of iron values from ores, e.g. iron ores, titaniferous ores, bauxite and laterite, and from scrap iron. In the process described the ore, or scrap iron, is first leached with HCl to convert the metal values to their chlorides, and then oxidized to convert any ferrous chloride to ferric chloride prior to solvent extraction. With titaniferous ores the aqueous raffinate, containing titanium chloride, remaining after solvent extraction may readily be worked up to recover titanium dioxide.
Patent GB-1096324-A (GB)
Title: Improvements relating to devices for drawing warp threads into reeds
IPC: D03J1/14
Filed: 1965-10-28
Abstract: 1,096,324. Threading reeds. ZELLWEGER Ltd. Oct. 28, 1965 [Jan. 14, 1965], No. 45678/ 65. Heading D1M. In Figures 1 and 2 the reed threading device 3 has openings 9, 10 so that the threads may be drawn-in when the healds are either above or below the reed. In Figs. 3 and 4 (not shown) a guide (15) is reversible for the same purpose. In Figs. 5 and 6 (not shown) the whole device 3 is rotable about a pivot (26) and in Fig. 7 (not shown) it is detachably connected to a member (29).
Patent GB-1355110-A (GB)
Title: Stilbenyl derivatives of benzo-bis-triazole
IPC: C07D249/16
Filed: 1971-10-01
Abstract: 1355110 Stilbenyl derivatives of benzo-bistriazole CIBA-GEIGY AG 1 Oct 1971 [1 Oct 1970] 45800/71 Heading C2C [Also in Division D1] Novel stilbenyl derivatives of benzo-bistriazole have the general formula  wherein D is a benzoxazol-2-yl, 1,3,4-oxadiazol- 2-yl, benztriazol-2-yl, naphthtriazol-2-yl or benzo-bis-triazol-2-yl radical optionally substituted by 1 to 3 substituents selected from halogen, alkoxy, phenoxy, phenyl, phenalkyl, cycloalkyl, methylenedioxy or alkyl having at least 2 carbon atoms, or methyl in the case of the benzoxazol-2-yl radical, and R x , R y  and R z  are hydrogen, alkoxy, halogen, or alkyl having at least 2 carbon atoms, or R x  is phenyl or phenylalkyl or R x  together with R y  is a methylenedioxy group, are prepared by reacting a Schiff's base of the formula wherein h and k denote hydrogen, chlorine or methoxy, in a molar ratio of 1 : 1 with a compound of the formula in the presence of dimethylformamide and of a strongly basic alkaline compound (i.e. having a dissociation constant of at least 0À6) such that if the alkali compound is an alkali metal hydroxide up to 25% by weight of water may be present and if the alkali compound is not an alkali metal hydroxide no water is present. The alkali compound is suitably a potassium compound of the formula wherein x is an integer from 1 to 6. The novel compounds are useful as optical brightening agents for organic materials.
Patent GB-1213528-A (GB)
Title: Plastics container
IPC: B65D1/02
Filed: 1968-09-27
Abstract: 1,213,528. Plastics bottle. DEUTSCHE SOLVAY-WERK. 27 Sept., 1968 [28 Sept.,  1967], No. 46118/68. Heading B8D. A moulded plastics bottle 10 made of polyvinyl chloride or polyethylene is formed around its bottom edge with a supporting ring 14 which has interruptions 16 the centres of which lie on a radial line which is at an angle of substantially 90 degrees, to the parting plane 12 of the two part mould in which the bottle was formed. Expansion of the bottle bottom is at a maximum in the vicinity of the interruptions and this prevents the bottom from buckling and becoming unstable. The bottle is formed with inwardly directed concavity 20 and may have a neck portion 22 and a shoulder 24 for supporting the container when a closure is applied.
Patent GB-1433938-A (GB)
Title: Voltage dividing dc circuit breaker and method
IPC: H01H36/00
Filed: 1973-10-03
Abstract: 1433938 Arc extinction in switches HUGHES AIRCRAFT CO 3 Oct 1973 [16 Oct 1972] 46135/73 Heading H1N A voltage dividing D.C. circuit breaker comprises two serially connected switches 22, 26 in parallel with two serially connected capacitors 30, 32 and a crossed field switching device 28 in parallel to switch 26 and capacitor 32. Switch 22, which is relatively a high voltage device and may be a vacuum interrupter, carries the load current continuously and has good currentchopping characteristics; switch 26, which is relatively a low voltage switch and may be an SF6 filled circuit breaker, also carries the load current continuously and is capable of producing a high arc voltage when opening in order to divert the load current into the device 28 which only carries the current for a short time and interrupts under reduced voltage conditions on account of the voltage divider effect of the series capacitors 30, 32. In a current-break operation switch 26 is first opened, the derived arc voltage triggers device 28 into conduction and switch 26 deionizes. This is accompanied or shortly followed by the opening of switch 22 during the arcing time of which device 28 starts to off switch with a consequent reduction of circuit current flow to the current chopping level of switch 22 whereupon the recovery voltage increases rapidly (Figs. 2 and 3, not shown) and conduction ceases. The capacitance values are chosen in about 10 : 1 ratio as between 32 and 30 and the capacitor divider effect is to confine the voltage duty of switch 22 to about 20% of rated circuit voltage and to limit switch 26 and device 28 to about 10% of rated circuit voltage. Further control against voltage peaks on switching off includes impedance increasing stages such as (62), (64), (Fig. 4, not shown), which sequentially switch off power carrying resistors (66) and (80).
Patent GB-983272-A (GB)
Title: Improvements in garments
Inventor: CLEMENTS COLIN PATOIN
IPC: A41B13/00
Filed: 1962-12-06
Abstract: 983,272. Pinafores &c. WESSEX TEXTILES Ltd. Nov. 13, 1963 [Dec. 6, 1962], No. 46170/62. Heading A3V. A garment such as a pinafore comprises a substantially rectangular piece of flat material having a draw tape 2 along one edge and arm holes 4 so located that when the wearer's arms are through the holes the tape can be tightened to draw the edge round the wearer's neck. For a child wearer dimensions are chosen which ensure that only with the use of great force can a throttling neck size be achieved.
Patent GB-1345060-A (GB)
IPC: C07F9/12
Filed: 1971-10-06
Abstract: 1345060 Sulphur-containing phosphate esters GAF CORP 6 Oct 1971 [13 Oct 1970] 46482/71 Heading C2P [Also in Divisions C3 and C5] The invention comprises compounds of Formula I where R is C 1-20  alkyl, phenyl or C 7-18  alkylphenyl or aralkyl, x is 1, 2 or 3 and when x is 2 or 3 the groups RS may be the same or different, n is 0 or an integer of 1 to 50 and when n is greater than 1 the groups (OCH-CH 2 ) Y are the same or different in a single molecule, m is 1, 2 or 3, Y is hydrogen, methyl or ethyl, Z is hydrogen or C 1-20  alkyl and M is a cation, mixtures of a compound of Formula I in which m is 1 with the corresponding compound in which m is 2 and mixtures of compounds of Formula I having different values of Y. M is preferably H, alkali metal, alkaline earth metal, heavy metal, NH 4  or amino. The compounds of Formula I may be prepared by reacting a phenol of Formula II or a condensation product thereof with one or more alkylene oxides with (a) phosphorus pentoxide to form a mixture of mono- and diesters of Formula I, (b) phosphorus oxychloride to form a triester of Formula I or (c) phosphorus trichloride or a triaryl phosphite to form a phosphorous acid triester which may be oxidized to give a triester of Formula I.
Patent GB-1350280-A (GB)
Title: Opto-electronic scene monitoring system
IPC: G08B13/194
Filed: 1971-10-06
Abstract: 1350280 Intruder alarms HUGHES AIRCRAFT CO 6 Oct 1971 [26 Oct 1970] 46502/71 Heading G4N An intruder alarm system comprises a  rotatable scanner 52 arranged to scan a scene  and detect radiation emanating therefrom and a rotatable store 15 arranged to rotate at a fixed ratio with respect to the scanner 52 to record each scene. A comparator 30 is arranged to provide an output in response to changes in subsequent scenes. The scanner 52 may carry twelve mirrors arranged at varying angles to the axis 44 and arranged to direct infra-red radiation from the scene on to a lens 54 which focuses it on to a line of six detectors D1 ... D6 in a Dewar assembly 56 so as to provide 72 line interlaced scanning. A magnetic drum recorder 15 is geared to the scanner 52 so as to rotate at half speed. The outputs from the six detectors D1 ... D6 are fed to respective writing heads W arranged in an axial line so as to record each scene on half the circumference of the drum 15. Read heads R1, R2 and a differential amplifier 30 compare successive scans, an alarm being given if the difference exceeds a threshold at 32. Each scan may alternatively be integrated before comparison. Erase heads E are provided.
Patent GB-992954-A (GB)
Title: Improvements in or relating to bleaching
IPC: D06L4/26
Filed: 1961-12-29
Abstract: An aqueous alkaline chlorite-containing bleaching concentrate or an alkaline chlorite containing bleaching solution contains a stabilizing and activating quantity of urea and/or one or more of ammonium carbonate, bicarbonate or carbamate.  The term a "stabilizing and activating quantity" means such a quantity that the chlorite containing solution or concentrate is stable in contact with it under normal storage conditions and is activated by it on heating. The bleaching concentrate contains at least 200 g/l of chlorite and preferably contains 10-80 g.p.l. of the additive.  The bleaching solution preferably contains 0.5-5 g.p.l. of the additive.  The chlorite may be sodium, potassium, ammonium or calcium chlorite.  The bleaching concentrate or solution may also contain wetting agents, e.g. nonyl-phenyl-polyethylene glycol ether containing 4 molecules of ethylene oxide per molecule and the sodium salt of di-isobutyl naphthalene sulphonic acid, corrosion preventatives, e.g. sodium nitrate, buffer substances, e.g. di-sodium hydrogen phosphate, and optical bleaching agents, e.g. stilbene and coumarin derivatives. Textile materials, e.g. cotton, polyester, viscose rayon, cellulose acetate rayon and polyamide fabrics, may be bleached by contacting them with the bleaching solution, separating the bulk of the bleaching solution from the textile materials and then heating the textile materials, if desired while they are stored in a closed polythene bag.
Patent GB-1193125-A (GB)
Title: Compressed Air Brake Cylinder having a Built-in Automatic and Single-acting Brake Adjustment means, especially for Rail Vehicles
IPC: B61H15/00
Filed: 1967-06-22
Abstract: 1,193,125. Air brake cylinder; slack adjustmerit. KNORR-BREMSE G.m.b.H. 22 June, 1967 [23 June, 19661, No. 46674/69. Divided out of 1,193,124. Headings F2E and F2F. The description is the same as the parent Specification 1,193,124, but the claims are directed to an air brake cylinder having automatic self adjustment for brake wear characterized by a compression spring 21 placed between a ring 22 abutting the adjusting nut 18 and the piston end of the push rod 13, to hold the ring 22 against the nut and prevent axial play of the push rod within the nut. Reference has been directed by the Comptroller to Specification 1,144,685.
Patent GB-967420-A (GB)
Title: A method of and apparatus for preventing the build-up of a flammable fuel-air atmosphere in a furnace incident to a furnace flame-failure
IPC: F23M11/02
Filed: 1962-12-11
Abstract: 967,420. Safety devices for furnaces. COMBUSTION ENGINEERING Inc. Dec. 11, 1962 [Feb. 14, 1962], No. 46685/62. Heading F4B. The burning of the fuel in a furnace is continuously monitored, and in the event of flame failure the supply of fuel is cut-off, the supply of air is at least substantially reduced and inert gas is fed to the furnace so as to form a non-flammable atmosphere within the furnace. In a steam generator, a flame detector 60 is connected through a controller 62 and actuators 70, 72, 74, 76 to a valve 68 in a steam line 64, a valve 54 in the fuel supply line, an air supply damper 58 and a forced draught fan 48 so that in the event of flame failure, steam is fed from the line 64 to the windboxes 46 of the burner assemblies and the fuel and air supplies are cutoff. The drive motor 56 for a coal pulveriser 40 is also stopped. The pressure and amount of the steam supplied to the windboxes of the burners is such that any leakage of air due to the inertia of the fan 48 gaps round the air damper 58 does not reach the combustion space. Since the steam is supplied through the burner, it sweeps through the furnace in the path of the flame and combustion gases and prevents the formation of pockets of explosive mixture.
Patent GB-1358899-A (GB)
Title: Aluminium alloy for galvanic anode
IPC: C22C21/00
Filed: 1971-10-07
Abstract: 1358899 Aluminium alloy MITSUBISHI KINZOKU KOGYO KK and NIHON BOSHOKU KOGYO KK 7 Oct 1971 [7 Oct 1970] 46716/71 Heading C7A An aluminium alloy for corrosion protection anode consists of: In examples Al containing Fe À12%, Si À08% and Cu À003% is used as the source of aluminium.
Patent GB-1061593-A (GB)
Title: Improvements relating to a tuning selector
IPC: H03J3/00
Filed: 1963-11-29
Abstract: 1,061,593. Radio receiver construction; transistor circuits. TELEFUNKEN PATENTVERWERTUNGS G.m.b.H. Nov. 29, 1963 [Nov. 29, 1962], No. 47177/63. Headings H3Q and H3T. In a transistorized television tuner a first transistor is used as a combined mixer/oscillator at U.H.F. but solely as a mixer at V.H.F,. while a second transistor used as an I.F. amplifier at U.H.F. is switched to act as local oscillator at V.H.F. A circuit diagram (Fig. 6) accompanies the Specification, in which transistor 30 comprises an R.F. stage, transistor 31 the first transistor referred to above and transistor 39 the second. The tuner is constructed in a screening box 1, Fig. 1, which is divided longitudinally into two parts by a partition 2 which comprises a printed circuit. The first part is subdivided by means of transverse screening partitions 3, 4, 5 into a number of compartments 6, 7, 8, 9 which are traversed by the shaft 12 of the ganged tuning capacitor. Movable plates 13, 14, 15 are attached to this shaft, while the fixed plates 16, 17, 18 respectively are attached to the upper ends of U.H.F. strip lines 19, 20, 21 respectively (see Figs. 4, 5) which are formed on the printed circuit plate 2. Trimmer capacitors 23, 24, 25 are also attached to these points. The printed circuit plate 2 also comprises screening areas 32 (Fig. 5) which are soldered to the ends of the box 1 and coupling inductors 26, 27. At U.H.F. the lower ends of the lines 19, 20, 21 are earthed directly via the contacts of a switch 22 (Fig. 4) located between the printed circuit plate 2 and floor of box 1. On V.H.F. bands the switch contacts 22 are opened to connect inductors 36 in series with the lines 19, 20, 21, while a second V.H.F. band is brought into operation by means of switch 38, operation of which removes a short-circuit on inductors 37 which are in series with the inductors 36. The transistors 30, 31 are located in cut-outs in the top edge of the printed circuit plate 2, while transistor 39 is located in the upper compartment of the box 1.
Patent GB-1134742-A (GB)
Title: Improvements in or relating to the production of planographic offset plates
Inventor: SPENCER ALEXANDER
IPC: G11C13/04
Filed: 1964-11-23
Abstract: 1,134,742. Printing plates. GESTETNER Ltd. 22 Nov., 1965 [23 Nov., 1964], No. 47601/64. Heading B6C. [Also in Divisions C3 and D2] An electrographic sheet comprises an electrically conductive sheet of impervious paper, an electrically conductive layer having a conductivity of 4 x 10<SP>-3</SP> to 2 Î 10<SP>-4</SP> mhos on one side of the paper, and on the conductive layer an outer layer of bitumen, which may contain up to 30% of carnauba wax. The paper may be made conductive by impregnation with an electrolyte, or by incorporating particles of carbon in it during manufacture. Its conductivity may be 1À6 x 10<SP>-5</SP> to 2 x 10<SP>-6</SP> mhos. The conductive layer may be of conductive particles dispersed in a film-forming binder. There may be a second conductive layer of lower conductivity, e.g. 1À4 Î 10<SP>-5</SP> to 2 Î 10<SP>-6</SP> mhos, on the side of the sheet opposite the first conductive layer. The conductivities are determined using two brass electrodes 1 cm. apart, each 1 cm. square, pressed on to the sheet and connected to a conductivity meter. Planographic plates are imaged by placing them with their hydrophilic faces in contact with the outer bitumen layer of the above electrographic sheet, and applying an electric discharge by stylus so that the bitumen layer is transferred where the image is to be formed. The electrographic sheet may be attached along one edge to a blank planographio plate, or to a flexible supporting sheet. Planographic plates are made by coating paper with one of the following: (I) sodium carboxymethylcellulose, glycerine and china clay, insolubilized with copper sulphate, aluminium sulphate, ferric chloride and chromium trioxide; (II) china clay, casein and dimethylolurea, followed by sodium alginate in aqueous butanol and insolubilized by zinc acetate in aqueous butanol; or (III) sodium carboxymethylcellulose, clay, copper sulphate, acetic acid, ammonium bichromate, and ferric chloride. The paper may be first coated on one or both sides with china clay and ammoniacal casein.
Patent GB-1083560-A (GB)
Title: Method and apparatus for making building panels
IPC: B28B23/00
Filed: 1964-11-25
Abstract: 1,083,560. Laminates and laminating. E. F. HAUSERMAN CO. Nov. 25, 1964 [Dec. 12, 1963], No. 47963/64. Heading B5N. A building panel comprising metal outer layers enclosing a core of gypsum board, foamed rigid plastics or honeycomb material, is made by coating the core on both faces with adhesive, placing it on one of the outer layers, also adhesive-coated, and placing the other outer layer, similarly coated, on the assembly. The edges of the outer layers are then bent over and interlocked. In the apparatus shown, Figs. 1 and 1A, conveyers comprising parallel cords, e.g. of nylon, are used. Conveyers 7, 34, 56 transport respectively core layers in succession from a stack at 12, and first and second outer layers, to spray points 26, 48, 69, where the cores are sprayed with adhesive on both sides and the outer layers on one side only. The cores are then transported to a station 119 and held against stops 164, whereafter they are moved laterally by tilting conveyers 130 to pivoted arms 155 which invert them on to outer layers held by similar stops 165 on conveyer 34. Subsequently the assembly, core layer uppermost, is moved to station 171 where the second coated outer layer is inverted on to it by a similar tilting conveyer and pivoted arm mechanism. Roller assemblies 40, 52, 62, 184, between flights of the conveyers 34, 56, operate to upset, and finally interlock, the edges of the outer layers as shown at 89, 92, 96 of Fig. 6. Assembly 184 also functions to press the layers into adhering contact. The adhesive used is preferably a cold-curing thermoset composition such as solvent-based neoprene, natural or reclaim rubber, butadiene-styrene, butyl-polybutylene, or "Thiokol" (Trade Mark), but may be a synthetic rubber-phenolic resin combination.
Patent GB-1399416-A (GB)
Title: Shunting device for railway freight wagons or the like
IPC: B61J3/12
Filed: 1973-10-15
Abstract: 1399416 Propelling railway wagons ZAPPEL KG MASCHINEN-UND APPARATEBAU 15 Oct 1973 [18 Oct 1973] 47975/73 Heading B7H In a shunting device for railway waggons having a frame 1 defining a platform for carrying a fork lift truck, 7 with its driven wheels 10 supported on rollers 2 in driving connection with running wheels 4, the rollers 2 are arranged in two pairs each of which is connected on to the wheels 4 on the corresponding side of the vehicle. The rollers 2 are connected to the wheels 4 through respective speed-reducing chain drive transmissions parts of which are housed in buffer brackets 15 so that a low platform height can be obtained. The wheels 4 have rubber or plastics tyres 16, and the front and rear wheels 4 have flanges 12 which are accommodated in the buffer brackets 15 at the front and in projections 13 above the platform at the rear. The platform slopes downwardly towards the rear and is provided with hinged loading ramps 14. Lifting eyes 11 provided on the platform are engageable by the forks of the truck 7 so that the device may transported by the truck.
Patent GB-1412983-A (GB)
Title: Method of producing porous plastic materials
IPC: B29C67/20
Filed: 1972-10-18
Abstract: 1412983 Laminates DEBELL & RICHARDSON Inc 18 Oct 1972 [30 Nov 1971] 48023/72 Heading B5N [Also in Division C3] In Example 74 a sheet of polyethylene blended with potassium carbonate, polyvinyl methyl ether solution and a t-octyl phenol/ethylene oxide condensate was laminated to desized cotton print cloth by press moulding, and the laminate was leached with water to render the polyethylene porous.
Patent GB-1530948-A (GB)
Title: N-doped silicon crystals
IPC: C30B31/20
Filed: 1976-11-19
Abstract: 1530948 Making an n-type Si monocrystal SIEMENS AG 19 Nov 1976 [24 Nov 1975 27 Nov 1975] 48253/76 Heading G6P [Also in Division H1] An n-type Si monocrystal having a "dishshaped" profile of resistivity across its crosssection (see Fig. 2) is made by bombardment with neutrons to produce phosphorus atoms by the reaction:- under conditions such as to produce the desired profile. This may be achieved by virtue of the initial doping profile of the body, or by one of a number of different masking techniques disclosed in the Specification.
Patent GB-1178893-A (GB)
Title: Rotary Piston Machine
IPC: F02B53/00
Filed: 1967-10-24
Abstract: 1,178,893.  Rotary piston machines. DANFOSS A.S. Oct. 24, 1967 [Nov.10, 1966], No.48305/67. Heading F1F. A rotary piston pump or motor comprising a main shaft 27, an inlet port 12, a discharge port 13, a fixed internally-toothed ring gear 1 and a meshing inner gear 2 with one less tooth, includes a rotary cylindrical valve slide which is made in two parts 20, 21 provided with control passages 22, 23 respectively and positioned co-axially with, and rotatable at the same speed as the main shaft 27 with one part 20 positioned on one side of the gears to control flow from the inlet port to spaces between the teeth of the ring gear and the other part 21 positioned on the other side of the gears to control flow from the spaces between the teeth of the ring gear to the discharge port. Swivelling shafts 29, 33 each have one end connected by splines 30 to the inner gear 2 and the other end connected by splines to bushes 24, 25 which are secured to the parts 20, 21 respectively with the bush 24 secured to or forming part of the main shaft 27. The ports 12, 13 communicate respectively through annular distribution passages 18, 19 and ports 5, 6 in fixed plates 3, 4, one on either side of the gears, with the spaces between the gears.