baber/WOPTO huggingface dataset:
Patent GB-924646-A (GB)
Title: Improvements in or relating to the desulphurisation of crude iron
IPC: C21C1/02
Filed: 1960-12-13
Abstract: Crude iron, e.g. containing 0.10 to 0.25% S, is desulphurized by injecting under pressure through a pipe into a bath of the molten iron, e.g. at a temperature of 1150 DEG  to 1250 DEG  C., a stream of carrier gas such as air or preferably nitrogen in which is suspended a powdered mixture of lime and 1-18% by weight of the mixture of soda in an amount of not more than 5 litres of gas per Kg of the powdered mixture, which may also contain CaCO3 and/or CaF2.  The gas is preferably injected at a pressure 0.1-0.5 atmosphere above the static iron pressure at the pipe outlet.  The lime and soda may be stored in separate vessels connected, e.g. by screw conveyers, to a pneumatic mixer so that the lime/soda proportion may be continuously adjustable during injection, e.g. the amount of soda in the mixture increasing during injection, initially being lime without soda for the first 6 Kg. per metric ton of iron; the rate of injection may also be increased.  A specific composition of a basic slag formed on the bath surface is 30% CaO, 2-4% CaS, 4% SiO2, 2%Na2O, balance iron granules and iron oxide.
Patent GB-1061443-A (GB)
Title: Flowing mercury cathode electrolysis cell and method of electrolysis
IPC: C25B1/36
Filed: 1963-10-30
Abstract: <PICT:1061443/C6-C7/1> A flowing mercury cathode cell includes a cathode base plate 1 inclined to the horizontal at an angle between 2 degrees and 85 degrees over which a film of mercury 15a is flowed downwardly in contact with an electrolyte 35 and between the cathode base plate and an anode surface 7, a gas outlet 30 at the upper end of the cell whereby gas bubbles released at the anode surface and travelling upwards and along the cell roof cause circulation of the electrolyte, and a mercury amalgam outlet means 19 at the lower end of the base plate and through which the amalgam passes to a discharge means 25, the outlet means including means for changing the direction of flow and increasing the turbulence of the amalgam so as to produce a churning pool of amalgam, the turbulence increasing means being arranged to flow the amalgam into the pool 23 at an angle of less than 90 degrees from the horizontal so as to dissipate the kinetic energy of the flowing amalgam stream and maintain electrical continuity of the amalgam by avoiding splashing, whereby the discharged amalgam is kept free from impurities and electrolyte.  The outlet means may be formed as a continuation of the base plate 1 either at the same inclination or a greater one as shown, and turbulence may be provided by decreasing the cross-section of the amalgam path, e.g. by means of the adjustably mounted spacer 21, by providing a discharge pipe of section smaller than the pool Fig. 4 (not shown), by tapering the amalgam pool zone both in width and height and dividing it into three separate small pools each with its own discharge pipe Figs. 2, 3 (not shown), or by providing the width of the pool zone with a non uniform taper Figs. 9, 10 (not shown). The mercury film formed by overflow from the supply pool 15 may be spread by an adjustable doctor member 13 as shown or by providing the edge of the base plate 1 with an upstanding sharp-edged lip Figs. 6, 7 (not shown).  A multiple tier bipolar cell Fig. 8 (not shown) may be formed by arranging a stack of units similar to that shown with the base plate of one unit supporting the anode surface of the cell beneath it in the stack, the anodic connection being made to the top cover of the uppermost unit and the cathodic connection being made to the base of the lowest unit.  To assist in reduction of gas bubble retention and to facilitate gas lift circulation, the anodes may be of graphite provided with vertical tubular holes or oblique or horizontal channels in the lower surface or may be of spaced cylindrical or rectangular bars of graphite or metal or aperture plated or expanded metal form of titanium covered with platinum or platinum and magnetite is described for the electrolysis of brine, the anode supports 9 are preferably coated with a metal resistant to chlorine such as titanium or with rubber 33, as are those parts of the cell not directly involved in the electrolytic reaction.
Patent GB-1180075-A (GB)
Title: Improvements in or relating to Return-Flow Dust Separators and Collectors.
Inventor: JOHNSON JOHN CUNNINGHAM
IPC: B04C5/28
Filed: 1967-09-21
Abstract: 1,180,075. Centrifugal separators. DAVIDSON & CO. Ltd. 5 Sept., 1968 [21 Sept., 1967], No. 42986/67. Heading B2P. In a multi-cell centrifugal dust separator, Fig. 1, having the top and bottom ends of each cell outer tube 17 in communication respectively with a common dust-laden gas inlet channel 12 and a dust-collecting hopper 15 and the top end of each cell vortex finder inner tube 22 opening into a common clean gas outlet channel 13, and having fixed angularly spaced vanes 26 disposed at or adjacent the top end of the annular chamber 23 between the tubes 17 and 22, the outer tube 17 has an upper cylindrical portion 18 of length b Fig. 2, equal to at least 3¢ times its inside diameter d and a frusto-conical bottom end portion 19 terminating in a dust outlet having a diameter b which is between 0.65 and 0.95 of the internal diameter f of the inner tube 22. The diameter f is between 0.55 and 0.65 of the diameter d. Each vane 26, Fig. 5, has a major planar portion 27 inclined at an angle k of 40-60‹ to the cell axis and a top end curved portion 28 so that the edge portion 29 of the vane is directed towards the gas inlet parallel to the cell axis. The radius of curvature m of the portion 28 is between 0.18 and 0.21 times the diameter d of the tube 17. The vanes are so relatively disposed that they overlap when viewed along the axis of the cell. Dimensions are given. (For Figures see next column)
Patent GB-1399825-A (GB)
Title: Pyrotechnic mixtures
IPC: C06D3/00
Filed: 1971-09-15
Abstract: 1399825 Pyrotechnic compositions ALBRIGHT & WILSON Ltd 25 Sept 1972 [15 Sept 1971] 43045/71 Heading CID A combustion mixture generating smoke and flame for a sea marker comprises red phosphorus, oxalic acid, and an oxidizing agent for the phosphorus, and has a low water content, e.g. less than 0À5% by weight. The oxidizing agent may be an alkali metal or alkaline earth metal sulphate, e.g. anhydrous calcium sulphate. The water content of the mixture may be reduced by drying the mixture, or the components thereof, for several hours at above 90‹ C. in an inert gas or under partial vacuum. Alternatively, the oxalic acid may be used at least partially in the anhydrous form. The mixture decomposes more slowly than a similar mixture in which the oxalic acid is present as dihydrate.
Patent GB-1411044-A (GB)
Title: Production of detergents
IPC: C11D3/00
Filed: 1973-09-14
Abstract: 1411044 Expanded detergent composition CHEMICAL SERVICES (Pty) Ltd 14 Sept 1973 [14 Sept 1972] 43243/73 Heading C5D Expanded detergent compositions are prepared by mixing the components of the composition to form a settable dough, incorporating in the mix reactants for an exothermic reaction, the reactants being detergent ingredients or ingredients which react to form detergent ingredients, a blowing agent which vaporises under the influence of the heat of reaction, and a volatile, water-miscible, organic solvent as an inhibitor for the reaction, and removing the inhibitor by vaporization when expansion and setting of the mix is required. The reactants may be water and a hydrating agent such as pentasodium tripolyphosphate; or sodium trimetaphosphate and sodium hydroxide. The blowing agent may be water or hydrogen peroxide. The inhibitor may be methylated spirits. The expanded detergent may be ground to give a powder.
Patent GB-928870-A (GB)
Title: Binder case construction convertible to easel form
Inventor: SCHADE FRANK STANLEY
IPC: B42F13/40
Filed: 1961-12-04
Abstract: 928,870. Filing papers. NATIONAL BLANK BOOK CO. Dec. 4, 1961, No. 43330/61. Class 146 (1). , The front, back and spine panels 12, 14 and 10 forming the binder case 8 of a loose leaf binder are constructed of upper and lower portions hinged together, respectively, at 16, 20 and 18, such that when opened out as shown in Fig. 2 the top portions may be swung back to provide an "easel" support for the opened binder. A known type of toggle-plate ring mechanism unit 22 is mounted in a channel-shaped mounting plate 28 which is riveted to the lower portion of the spine panel 10 the upper part of the plate nesting in a channel-shaped brace-plate 26 whenever the top panel portions are coplanar with their respective lower portions. The side walls 32 of the plate 26 extend beyond the upper web end of the plate and are formed with ears 36 turned inwardly for pivotal and frictional engagement with recesses 30 formed in the side walls 29 of the plate 28 near its upper end. The lower end of the plate 26 is bevelled at 38 such that on swinging the upper panel portions down for " easel " support the plate may be swung into the vertical supporting position shown in Fig. 3, the ears 36 pivoting about, and sliding along, the edges of the recesses 30. The binder case 8 may comprise heat-sealed superposed plastic sheets with stiffeners therebetween, the dividing hinge lines between front, back and spine panels and between upper and lower panel portions being formed by heat sealing the contacting inner surface portions of the sheets.
Patent GB-1190286-A (GB)
Title: Multi-Frequency Signal Receiver
IPC: H04Q1/453
Filed: 1968-09-12
Abstract: 1,190,286. Voice frequency receivers. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 12 Sept., 1968 [15 Sept., 1967], No. 43406/68. Heading H4R. In a multifrequency signal receiver of the type in which an amplitude limiter is common to a group of channels each including a frequency selecting filter and a signal threshold detector, a signal identifying device connected to the output of each threshold detector of the group of channels is adapted while responding to a valid incoming signal to lower the thresholds of the threshold detectors in those channels whose detectors have responded. The object is to avoid a long duration signal being interpreted as two successive signals if a burst of noise causes the amplitude limiter to attenuate a portion of the signal. The invention is applied to a known receiver (Fig. 1, not shown) in which a signal timing device gives an output if the signal identifying device responds for more than a predetermined interval. This output is applied to the input 24 of the circuit shown. The figure shows the selecting filter 6 and the threshold detector 13 of one channel. The emitter of the transistor in the threshold detector of each channel is commoned at 16 to the output of a threshold level control circuit comprising transistors 17 and 20. When the signal timing device responds, a potential arrives at input 24 causing a normally blocked transistor 20 to switch to conduction for the duration of the signal input causing via a resistance 22, the transistor 17 to be blocked for the corresponding period. If for example - 48 volts is applied at the negative power supply terminal and Zener diode 19 maintains a voltage of - 40 volts at a point 18, the potential at the point 16 changes from - 40 volts supplied directly over the emitter collector path of the transistor 17 to a potential derived from - 40 volts supplied over resistor 26 and- 48 volts supplied over resistor 21. Due to the current drain caused by those transistors 13 which have responded this potential is less negative than - 40 volts and the threshold level of the non-responsive transistors is raised. Since as the conducting transistors 13 near cutoff the potential at point 16 changes to a value between - 40 and - 48 volts, as determined by the potential divider formed by resistors 21 and 26, the cut-off threshold of the conducting transistors 13 is lowered. The start of the input signal at 24 also triggers amonostable 23 which ensures that the transistor 17 is blocked for at least a predetermined period causing the thresholds of each detector transistor 13 to rise if the incoming signal ceases to be recognized in this period.
Patent GB-1014661-A (GB)
Title: Process for preparing cyclopentadienyl metal carbonyls and method of plating surfaces with same
IPC: C03C17/09
Filed: 1962-11-19
Abstract: A surface is coated with a Group Va metal e.g. V, Ta and Nb, by vaporizing a compound of formula QM(CO)4 wherein Q is a cyclopentadienyl radical of 6-13 C atoms and M is a Group Va metal, and contacting the vapour of said compound with the surface, the surface being maintained above the decomposition temperature of the compound.  The surface plated may be of steel, brass, bronze, borosilicate glass, graphite, ceramic, porcelain, plastics, Fe, Cu, Cr, Ni, Be, Mo or Al.  Whilst a carrier gas is not essential, H2, CO2,N2 or Ar may be used for flow coating technique. The surface to be plated may be heated to 200-600  DEG C. by resistance heating, I.R. heaters or an induction coil whilst the operating pressure may be 0.001-30 mm. Hg.  The surface is preferably prepared by degreasing and sand-blasting. U.V. light or ultrasonic vibrations may also be used to aid thermal decomposition of the compound.  In a specific example, a glass cloth is embedded in cyclopentadienyl tantalum tetracarbonyl in a tube devoid of air and heated to 400  DEG C. for 1 hour, to give a coating of Ta.  The preparation of the compounds QM(CO)4 is described (see Division C2).ALSO:Cyclopentadienyl Group Va metal tetracarbonyls are made by the reaction of a compound of formula M1ExM(CO)6 with a compound of formula M1Q (where M1 is an alkali or alkaline earth metal including Mg; M is a Group Va metal, e.g. V, Ta and Nb; E is a bidentate or tridentate ether ligand and a is 3 or 2, respectively, and Q is a cyclopentadienyl radical or a hydrocarbon substituted radical having 6 to 13 carbon atoms) in the presence of an oxidizing agent at a temperature of 0 DEG  to 150 DEG C. but preferably 25-100 DEG  C.  Oxidizing agents are listed and include permanganate, dichromate, air, oxygen, ozone and electrolytic oxidation, also numerous salts such as Group Ib and IIb halides, pseudohalides and hypohalites but the preferred oxidizing agent is mercuric chloride.  An ether solvent such as diethyl and dibutyl ethers, dioxan, diethyleneglycol dimethyl and diethyl ethers, ethylenglycol dimethyl and diethyl ethers, the preferred solvent being dimethoxyethane.  The cyclopentadienyl radicals specified are cyclopentadienyl, alkyl, alkaryl and aryl derivatives thereof, and indenyl and alkyl-indenyl, Na and Mg compounds being preferred.  The preferred molar range of the reactants are 1.2: 1.2: 1.0 to 1.5 : 1.5 : 1.0 (metal halide: cyclopentadienyl metal :sodium-ether hexacarbonyl metal). Various pressures from 0.1 to 150 atmospheres may be used and the reaction time may be up to 40 hrs.  An inert atmosphere may be used preferably nitrogen.  The reactants may be mercuric chloride, cyclopentadienyl sodium and sodium bis-(diethylene glycol dimethyl ether), hexacarbonyl vanadium, tantalum or niobium (-1), or sodium tris-(dimethoxyethane) hexa-carbonyl tantalum (-1) or potassium bis-(di-ethyleneglycol dibutyl ether) hexacarbonyl vanadium (-1). Disclosed as new compounds are (C5H5)Ta(CO)4 and (C5H5)Nb(CO)4.
Patent GB-1303696-A (GB)
IPC: G04F13/02
Filed: 1970-09-14
Abstract: 1303696 Optical apparatus COMMISSARIAT A L'ENERGIE ATOMIQUE 14 Sept 1970 [12 Sept 1969] 43821/70 Heading G2J Ultra-short pulses of monochromatic polarized light are measured by splitting the light-beam 1 into two beams 3, 4 which follow identical path lengths and interfere on the surface of a photocathode 7 located in a vacuum, the interference causing the emission of electrons from said photo-cathode 7 which are used to form an image of the interference zone from which the duration of the light pulses can be deduced . The image is formed by making the electrons from photocathode 7 incident upon an electron multiplier system 8, 9, comprising parallel fibres polarized by a D.C. generator, and then impinge upon a fluorescent screen or photographic plate 10. If the screen is used the resultant image is photographed. The light beam is preferably laser light from e.g. helium-neon gas laser or a solid neodymium-doped glass laser and the photocathode preferably has a surface of a thin layer of gold, caesium, silver or nickel. The two beams are incident on photo-cathode 7 at identical, and preferably grazing, angles of incidence. The pulse duration #t is derived from the formula #t = 1 sin #/C where 1 is the half-width of an interference fringe, # is the angle of incidence and C the speed of light in the medium adjacent the photo-cathode 7.
Patent GB-1280318-A (GB)
Title: Improvements in or relating to wiper devices for vehicle windows
Inventor: VINCENT ALAN SANTLEY
IPC: B60S1/34
Filed: 1969-09-04
Abstract: 1280318 Cleaning vehicle windows ROOTES MOTORS Ltd 25 Aug 1970 [4 Sept 1969] 43908/69 Heading A4F A wiper device for a vehicle window, comprises a strip 14 of polythene adhered at one end by a suction pad 13 to the window. (For Figure see next page)
Patent GB-1158666-A (GB)
Title: Partial Wigs
IPC: A41G5/00
Filed: 1967-09-28
Abstract: 1,158,666. Partial wig. KOMACHIYA HONTEN K.K. and Y. ITO. 28 Sept., 1967, No. 44139/67. Heading A4V. A partial wig comprises a cylindrical member 1 with a tuft of hair 3 secured to its outer surface and having an axial opening 2 which may receive one leg 4<SP>1</SP> of a hair pin 4. The cylindrical member is preferably made of woven fabric or may be in the form of a wire net.
Patent GB-1397708-A (GB)
Title: Fuel-dispensing nozzle seal
IPC: B67D7/54
Filed: 1973-09-20
Abstract: 1397708 Fuel-dispensing nozzle TEXACO DEVELOPMENT CORP 20 Sept 1973 [24 Oct 1972] 44168/73 Heading A47 [Also in Division B8] A dispensing nozzle 18 for transferring a volatile liquid from a pressurized source to a tank having a filling spout 22, comprises a discharge tube 33 having valve means 19 to regulate liquid flow therethrough, an expandable member 51 carried on the outer surface of the tube and radially expandable to engage the wall of the filling spout, a transfer conduit 46 between the discharge tube and member 51, and a vapour exhaust conduit 53 adapted to communicate with the interior of the tank. The nozzle is connected by a hose 16 to a pump delivering fuel from an underground tank and is provided with a trigger 31 for operating the valve 19 so that fuel is supplied through the discharge tube 33. The expandable member is in the form of a resilient torus slidable on the tube 33, the interior of the member being connected to the tube upstream of an orifice plate 38 which, in use, causes a pressure increase in the fuel, by the conduit 46 so that the member expands and forms a seal with the filling spout. As the liquid level rises in the tank, vapour is exhausted through the exhaust conduit 53 and recycled and either condensed or pumped to the storage tank. The expandable members may have a unitary wall thickness or be composite and formed of a plurality of joined segments.
Patent GB-1131290-A (GB)
Title: Anti-rattle device
IPC: F16D23/06
Filed: 1966-10-04
Abstract: 1,131,290. Shaft couplings; positive clutches. BORG-WARNER CORP. 4 Oct., 1966 [18 Oct., 1965], No. 44333/66. Headings F2C and F2U. In a spline connection between a hub 12, splined on a shaft 10, and an axially slidable sleeve 22, rattle between spline teeth 20, 23 on the hub 12 and sleeve 22, respectively, is prevented by preferably three balls (35), Fig. 2 (not shown), each within a radially extending bore 21 in the hub 12 and spring-urged radially outward to engage two of the teeth 23 to centre them with respect to teeth 20. The bores and associated balls and springs may be formed in the sleeve 22, and cylindrical members having a hemi-spherical end may replace the balls. The sleeve 22 forms part of a synchronizing clutch wherein the sleeve 22 is axially slidable to clutch a gear 25 to the shaft 10, and in which the synchronizer structure includes a blocking ring 27; thrust elements 28 mounted in slots 29 in hub 12; and a spring-loaded ball detent 30. In the splined coupling between the hub 12 and the shaft 10, splines 13 on hub 12 extend straight axially, and the splines 11 on the shaft 10 have a helix angle a, preferably less than 1 degree. .
Patent GB-1103599-A (GB)
Title: Improvements relating to power presses
Inventor: SWANN HARRY GERALD
IPC: B30B1/26
Filed: 1964-10-31
Abstract: 1,103,599. Forging presses. SAMUEL GRIFFITHS (WILLENHALL) Ltd. 20 June, 1965 [31 Oct., 1964], No. 44493/64. Heading B3H. [Also in Division B5] A power press includes a base 11, a pedestal 12 pivotably adjustable on the pedestal, a lower die 18, and a reciprocable upper die 21 connected by a ball joint 25 and connecting-rod 24 to the crank 23 of a crank-shaft 22, the crank-shaft being driven from a motor 28 through an epicyclic transmission which is arranged to brake the crank-shaft after each working stroke. The pedestal 12 is adjustable by a screw 14 to pivot about a horizontal axis relative to the base, a locking nut 13 movable in an arcuate slot 12a clamping the pedestal in position. The transmission (Fig. 2) includes a pulley driven planet carrier 33 which serves as a flywheel and supports three shafts 45 in bearings 46 and 47. Each shaft carries planet gears 43 and 44 keyed to the shaft by synthetic resin 50 injected into the shaft and allowed to harden. The planet gear 43 is keyed to a sleeve 55 which is keyed to the crank-shaft 22. The planet gear 44 is keyed to a sleeve 59 to which is attached a hub 64 carrying internally splined annular plates 66 supporting brake linings 67. A similar annular plate 76 with linings 77 is splined to a hub 74 keyed to the end of the crank-shaft. Following a working stroke, the crank-shaft is braked by springs 88 situated in the end wall 70 of the press and urging a piston 87 towards a fixed wall 78. To release the brake the piston 87 is urged to the left of its cylinder 80 by introducing a fluid such as air into the annular chamber 82 between the piston and cylinder. This movement causes thrust members 90 to compress the brake linings 67 between externally splined plates 73 and a fixed wall 71 to brake the hub 64 and hence the planet gears 44. The rotation of the planet carrier 34 is thus transmitted through the planet gears 43 to the crank-shaft. Release of pressure in the chamber 82 will allow the springs 88 to re-apply the brake for the crank-shaft.