baber/WOPTO huggingface dataset:
Patent GB-1015071-A (GB)
Title: Fire-resistant hydraulic fluids and metal working oils
Inventor: HOLZINGER RUDOLPH JOHN
IPC: C10M173/00
Filed: 1961-12-05
Abstract: Compositions suitable for use as fire-resistant hydraulic fluids and metal-working oils consist essentially of water-in-oil emulsions containing 0.1-5.0 wt. per cent of oil-soluble calcium petroleum sulphonate and 0.1-5.0 wt. per cent of at least one Na, K, NH4, Li, Sr or Ba soap of naphthenic acids having a M.W. of at least 275, the oil portion of said emulsions being a hydrocarbon oil of 50-400 SUS viscosity at 100 DEG  F., the water content of the emulsions being 10-50 wt. per cent, and the ratio of sulphonate to naphthenate being from 5/95 to 95/5 by weight.  White oil is particularly suitable as the oil portion. The composition may contain free Ca(OH)2, and free hydroxides of the soap forming metals or ammonia, as excess over the amounts required to form basic sulphonate and naphthenate respectively, and in an example a mixture of octylated and styrenated diphenylamines is present as antioxidant. Specification 1,015,072 describes similar compositions in which the naphthenate soap is calcium naphthenate.
Patent GB-1279802-A (GB)
Title: Temperature sensing probe
Inventor: FISHER JOHN ARTHUR
IPC: G01J5/12
Filed: 1968-07-11
Abstract: 1279802 Photo-electric temperature sensor BAKER PERKINS Ltd 26 June 1969 [11 July 1968] 43809/71 Divided out of 1279801 Heading G1A A temperature sensing probe comprises a heat absorbing copper plate 1, the outer surface of which is painted with matt black and a thermocouple junction 2 is attached to its inner surface, and a heat reflecting plate 3 of polished aluminium. Heat insulating material 4 is disposed between the plates preventing air-flow therebetween. The particular application of the probe to the temperature control of a bakers oven is described and claimed in Specification 1279801 (see Heading G3R) the probe being disposed in the oven between bread on a conveyer and a radiant heat source with the heat absorbing plate facing the radiant heater and the heat reflecting plate facing the bread.
Patent GB-960632-A (GB)
Title: Improvements relating to mass spectrometers
Inventor: CRAIG ROBERT DEREK
IPC: H01J49/18
Filed: 1961-12-07
Abstract: 960,632. Ion sources. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Nov. 30, 1962 [Dec. 7, 1961], No. 43861/61. Heading H1D. A mass spectrometer ion source comprising two relatively movable arc electrodes 9, 11 at least one of which is composed of the material to be analysed has a flexible heat conductor 26 between the electrode support clamp 7 and a heat absorber, as shown a flask 21 containing liquid air, nitrogen or helium or, alternatively, a thermoelectric cooling device 6 within the flask 21 or encapsulated and inserted within the ion source chamber. The other electrode 11 may be similarly connected to the flask 21 in which case the metal portion 23 of the flask may be in two parts separated by a glass ring or the metal portion 23 may be replaced by a glass body encircled by two metal bands. Alternatively the electrode 11 may be connected to a second flask similar to flask 21. A shield may be placed round the flask 21. A shield 16 covers the ends of the electrodes 9, 11 and is mounted on the clamp 7.
Patent GB-1277323-A (GB)
Title: Agglomeration of polyurethene
IPC: C08J9/33
Filed: 1970-09-15
Abstract: 1277323 Polyurethane foam PRB SA 15 Sept 1970 [17 Oct 1969] 43956/70 Headings C3C and C3R Flakes of expanded polyurethane are agglomerated by compressing at 180-230‹ C. This brings about a reversible partial depolymerization according to the reaction: in which R is the radical residue of the polyol and R<SP>1</SP> of the polyisocyanate. The polyurethane flakes, which may be ground prior to agglomeration, may be mixed with polyurethane prepolymer prior to heating and compressing, a catalyst, e.g. dibutyl tin dilaurate, and a chain extender, e.g. 4,4-methylene-bis-o-chloroaniline may also be present. Fibrous fillers, e.g. cotton or polyamide may also be incorporated. Uses.-Carpet backings and imitation leather.
Patent GB-913580-A (GB)
Title: Process for the purification of metal alkoxides
Inventor: ACCIARRI JERRY ANTHONY
IPC: C07F5/06
Filed: 1960-12-21
Abstract: Metal alkoxides are recovered from a mixture containing alkanes and alkenes as impurities by extracting the mixture with a nitroalkane having up to 5 carbon atoms and recovering the metal alkoxide product from the raffinate.  Preferably, highly volatile materials such as solvents and lower alkanes and alkenes are removed from the mixture, prior to extraction, e.g. by stripping under vacuum.  The nitroalkane may be recovered from the extraction product and recycled.  The process is particularly applicable for the purification of aluminium alkoxides, in which the alkyl groups contain 2-24 carbon atoms, mixed with impurities comprising solvent, n-alkanes varying from n-octane to n-tetracosane and 1-alkenes varying from 1-octene to 1-tetracosene.  The mixture is stripped under vacuum to separate the solvent and the alkanes and alkenes containing less than 12 carbon atoms, the remainder of the mixture is contacted with a nitroalkane having up to 5 carbon atoms, and the aluminium alkoxide is recovered from the raffinate by stripping under vacuum.  The mixtures which are used as starting materials may be obtained by the oxidation of aluminium alkyls.  Other alkoxides which may be purified by the process are those, for example, of sodium, magnesium, and lithium. Solvents which may be present in the starting materials are, for example, aromatic, acyclic and alicyclic hydrocarbons.  Examples are given of the purification of aluminium triethyl using nitroethane and nitropropane as extraction agents.
Patent GB-1485709-A (GB)
Title: High voltage supply system using piezoelectric transforme
IPC: H02M3/338
Filed: 1975-10-27
Abstract: 1485709 D.C.-D.C. inverters for ozonizers and precipitators NISSAN MOTOR CO Ltd and DENKI ONKYO CO Ltd 27 Oct 1975 [29 Nov 1974] 44013/75 Headings H2F and H2H A high voltage generator for a load 6, such as an ozone producer or an electrostatic dust separator, comprises a piezoelectric device 1 having two input electrodes 11, 12 and an output electrode 13, the electrodes 11, 12 being supplied with an alternating voltage produced by an oscillator unit 2, 3 which includes a parallel circuit 32, 312 having a resonant frequency equal to the natural frequency of the piezoelectric device 1 so that the output frequency of the oscillator equals the natural frequency, the output voltage of the piezoelectric device 1 being rectified and doubled by a unit 5, and applied to the load 6, the supply voltage to the oscillator unit 2, 3 from a D.C. source + being maintained constant by a voltage regulator 4 which includes a series transistor 41, the apparatus further being provided with a unit 7 which causes the voltage regulator 4 to become inoperative should the current taken by the load 5 exceed a predetermined level, the unit 7 being provided with a lamp 75 to indicate such an overload current. The unit 7 may comprise a thyristor instead of a pair of transistors or a breakdown threshold element instead of a variable resistor.
Patent GB-916889-A (GB)
Title: Multiple junction semiconductor devices
IPC: H01L31/0687
Filed: 1960-12-22
Abstract: 916,889. Semi-conductor devices. INTERNATIONAL BUSINESS MACHINES CORPORATION. Dec. 22, 1960 [Dec. 30, 1959], No. 44023/60. Class 37. A semi-conductor structure comprises zones of alternate conductivity types meeting at PN junctions which are alternately of tunnel and normal type. The arrangement provides a device having a current-voltage characteristic as shown in Fig. 5. The tunnel junctions have successively increasing impurity concentrations to provide characteristics with successively increasing values. The arrangement may also be used to provide a photo-electric voltage provided by the normal junctions which are effectively connected in series by the tunnel junctions. Fig. 4 shows the device with tunnel junctions 12a-12d and normal PN junctions 13a-13c. The device may be manufactured by epitaxial deposition as described in Specification 916,887 such as by providing sources of germanium, iodine and gallium tri-iodide which deposit on a substrate of germanium. The resistivity of the deposit is controlled by controlling the ratio of the impurity (gallium iodide) to germanium iodide. The impurity concentration at each tunnel junction is increased to be slightly greater than the previous one. All the semi-conductor zones have a high impurity content and the device exhibits a low resistance to both alternating and direct current. The semi-conductor material may alternately consist of silicon, indium antimonide, gallium antimonide or gallium arsenide and the impurities of aluminium, boron, indium, arsenic or phosphorus.
Patent GB-1089438-A (GB)
Title: Improvements in or relating to fluid flow control valves
IPC: F16K31/34
Filed: 1964-10-29
Abstract: 1,089,438. Regulating fluid flow; fluid-pressure servomotor systems. T. M. STRAND. Oct. 29, 1964 [Oct. 31, 1963], No.44063/64. Headings G3H and G3P. [Also in Division F2] The outlet passage 5 of a float operated valve is provided with a resilient cylindrical insert 18 to reduce noise. The body may be housed in a bellows 20, and the effective size of the central passage 19 may be varied by screwing the outlet 2 into or out of the valve casing, thereby compressing or expanding the insert 18. The insert 18 may be made of natural sponge, foamed rubber or foamed plastics material. The main valve 7 is integral with a diaphragm and is closed when float 9 allows pilot valve 12 to rise to admit water to chamber 8 via passages 15, 17. When the float falls, the pilot valve vents chamber 8 via passages 17, 16 to allow the main valve to open.
Patent GB-1475563-A (GB)
Title: Exothermic chemical reaction device
IPC: F02G1/043
Filed: 1974-10-11
Abstract: 1475563 Heating by chemical action PHILIPS GLOEILAMPENFABRIEKEN NV 11 Oct 1974 [15 Oct 1973] 44165/74 Heading F4X [Also in Division F2] A device 3 for controlling the supply of oxidant, e.g. SF 6 , to an exothermic reaction vessel 1 containing a liquid metal, e.g. lithium, comprises a piston 12 movable in a cylinder 11, a copper block 4 provided with cooling ducts 5 and a discharge duct 6 leading to a nozzle 7 having a small diameter discharge opening 16, and a needle holder 14 slidably arranged in a bore 13 within the piston and supporting a needle 15 dimensioned to close the discharge opening 16. The needle holder is provided on its upper side with an abutment 17 which is situated in a space 18 in the piston, the top of the space 18 being closed by a bolt 19. A spring 20 arranged between abutment 17 and bolt 19 urges the needle downwardly to close discharge opening 16 when the piston is in its lowermost position (see Fig. 2 not shown). The top of the cylinder 11 is used by an end plate 21. Oxidant from a reservoir 10 is supplied to the device via a line 22 or a line 8 depending upon the position of a three way valve 9. When oxidant is to be admitted into the reaction vessel 1 the valve 9 is set to allow oxidant to flow into the space below the piston 12 via the line 8; the pressure exerted by the oxidant forces the piston upwards thereby releasing a stop panel 24 and moving the needle 15 upwards clear of the discharge opening 16. When the supply of oxidant to the vessel 1 is to be stopped, the valve 9 is set to supply oxidant to the device through line 22. The oxidant entering the cylinder causes the piston to move downwardly so that the needle 15 closes the discharge opening 16; when the piston is in its lowermost position the stop pawl 24 engages a groove 27 in the surface of the piston.
Patent GB-1049907-A (GB)
Title: Fluid flow control valve
Inventor: LIVINGSTON ALEXANDER CUNNINGHA
IPC: F16K24/04
Filed: 1964-10-30
Abstract: 1,049,907. Valves. GLENFIELD & KENNEBY Ltd. Nov. 1, 1965 [Oct. 30, 1964], No. 41272/64. Heading F2V. A valve arrangement for venting gas from a pipe-line PL comprises, a Moat chamber 2 containing a float 4, a gas chamber 5 communicating with the float chamber via a port 6 and having a vent port 7 and a valve member 8 operable by the float via a tappet 10, and a relief valve 9 operable by the tappet via a lever 11. The valve member 8 is arranged to float over port 6 while gas is passing therethrough, but is forced to engage the vent port when liquid impinges on the member. During filling and emptying of the pipe-line there is no liquid in the float chamber and member 8 engages port 6. When the liquid level reaches a predetermined value, member 8 is forced to close vent port 7 by tappet 10. During normal service, gas accumulates in the float chamber and depresses the liquid level thereby causing the float to open the relief valve, the member 8 remaining in contact with the vent port under the action of the gas pressure. The liquid level then rises to close the relief valve. When the member 8 is not tappet-actuated it is seated against port 7 by the liquid and the rise in pressure of the gas depresses the liquid level as above.
Patent GB-952676-A (GB)
Title: Improvements in or relating to tubular oil heaters
IPC: F24C5/02
Filed: 1961-12-11
Abstract: 952,676. Burners. J. PETERS. Dec. 11, 1961 [Dec. 10, 1960], No. 44316/61. Headings F4T and F4W. A heater for a caravan comprises a vaporizing chamber 2 mounted in a hole 1 in the floor of the caravan and connected to an outer imperforate tube 5 leading to a gas discharge tube 6 and a perforated air feed tube 3 which extends coaxially through the vaporizing chamber 2 and the outer tube 5. The width of the annular gap between the tubes 3, 5 is small in relation to the diameter of the air feed tube 3. The latter is open at its lower end and closed at the top. Oil is supplied from a tank 18 through a flowregulating valve or drip feed device to thevaporizing chamber 2. Any excess oil over flows through the lowest ring of perforations 8 in the air tube 2 and is collected in a pan 16 connected to a collecting tank 19 mounted beneath the floor of the vehicle. The vaporizing chamber 2 is mounted in two asbestos rings 14 located in the hole 1 in the floor. The discharge tube, outer tube and vaporizing chamber are releasably connected together. The discharge tube 6 extends through the roof of the caravan and is terminated by a cowl 20.
Patent GB-871486-A (GB)
Title: A process for stabilising latex foams
IPC: C08J9/00
Filed: 1959-12-31
Abstract: A fatty acid ester or an alkyl carbamic acid ester of a disaccharide and/or an oligosaccharide is used to stabilize foams of natural or synthetic rubber latices.  A list of suitable esters and also of the synthetic rubbers is given.  Fillers, accelerators and vulcanizers can also be present.  Specification 827,358 is referred to.ALSO:A fatty acid ester or an alkyl carbamic acid ester of a disaccharide and/or an oligosaccharide is used as a latex foam stabilizer.  The latex may be of natural or synthetic (a list is given) rubber. Specified esters are the monolaurate and monomyristate of saccharose and raffinose, saccharose monopalmitate, saccharose dedecyl-, ectyl- and myristyl carbamic acid esters, and raffinose dodecyl and myristyl carbamic acid esters.  Fillers, accelerators and vulcanizers can also be present.  The foaming is produced from a catalysed hydrogen peroxide solution.  Specification 827,358 is referred to.
Patent GB-1028867-A (GB)
Title: Method for treating synthetic polymer fibres, particularly acrylic fibres, to improve their dyeing characteristics
IPC: D06M101/16
Filed: 1963-11-11
Abstract: The basic dye uptake of synthetic polymer fibres, particularly acrylic fibres, is improved by adding to the spinning dope prior to spinning, or treating the wet spun fibre while in a gel state with a polyacrylic acid, an alkyl-substituted aromatic sulphonic acid, a naphthol-substituted mono or disulphonic acid, an aromatic substituted sulphonic acid, a hydroxy alkyl substituted sulphonic acid, a naphthalene monosulphonic acid or an alkali metal salt of any of these acids.  Acrylic fibres may be wet-spun in a conventional manner and are treated while still in the gel never-dried state with the additive, which may be present in a conventional finish bath. Alternatively the additive may be added to the spinning solution. The fibres may consist of a copolymer of at least 80% acrylonitrile and up to 20% of another mono-olefinic monomer, e.g. a copolymer of 94% acrylonitrile and 6% vinyl acetate.  The fibres may be composed of a blend of two copolymers: 88% of a copolymer consisting of 94% acrylonitrile and 6% vinyl acetate, and 12% of a second copolymer consisting of 50% acrylonitrile and 50% methyl vinylpyridine.  The sulphonic acid used may be p-tolyl sulphonic acid, 2-naphthol-3,6 disulphonic acid, 2-naphthol-8-sulphonic acid, methylol sulphonic acid, or benzene sulphonic acid.  In the examples the sodium salt of 2-naphthol-3,6-disulphonic acid is used.  In example the treated fibres are dried, scoured in a conventional manner and dyed in a conventional manner with the basic dye Sevron Blue 2G, C.1. Basic Blue 22.
Patent GB-1475192-A (GB)
Title: Arrangement for connecting optical fibres
IPC: G02B6/38
Filed: 1974-10-14
Abstract: 1475192 Light guides WESTERN ELECTRIC CO Inc 14 Oct 1974 [18 Oct 1973] 44503/74 Heading G2J A device for aligning and connecting two groups of optical fibres comprises a thin wafer 10 having parallel top and bottom surfaces 12, 13, at least one of the surfaces having a plurality of equispaced, parallel grooves 11 of uniform cross-section for receiving the fibres. In one embodiment a  plurality of wafers 10 are stacked with fibres (15) of one group interleaved therewith, see Fig. 3 (not shown), and the assembly potted in epoxy resin, cut and polished to provide a butt end. Two such butt ends 19, 20 are joined by employing reverse ridge structures 30, 31 which may either both be held against the assembly 20, as shown, or which may be held respectively against the assemblies 19, 20. The connection is potted in epoxy resin. In another embodiment, both groups of fibres are interleaved with a stack of wafers, see Fig. 6 (not shown).
Patent GB-1336819-A (GB)
Title: Optical projection system
IPC: G03G15/041
Filed: 1971-09-24
Abstract: 1336819 Photo-copying apparatus INTERNATIONAL BUSINESS MACHINES CORP 24 Sept 1971 [6 Nov 1970] 44578/71 Heading G2A A projection optical system in, e.g. an electrophotographic copier, for imaging a document on a first plane 5 on to an image-receiving surface at a second plane 2a, includes a lens 12 and a reflector 11, the lens being mounted to move rectilinearly between two limit positions for selectively varying the magnification ratio of the image, the motion of the lens between the said positions having components along and perpendicular to the lens optical axis; the reflector 11 being mounted to move between two limit positions to vary the length of the optical path between the first and second planes; and means being provided for moving the reflector to a position appropriate to that selected for the lens. The mirror 11 is movable both parallel and perpendicular to itself. A second fixed mirror 10 completes the optical system, and flash lamps 6, 7 are provided for effecting whole frame exposure. The movement of parts 11, 12 is such that a pair of reference lines in the first plane 5 are imaged at a pair of reference lines on the second plane 2a, regardless of the selected magnification ratio.
Patent GB-936590-A (GB)
Title: Improvements in steroid processes
Inventor: MERCER CLIVE KENNETH
IPC: C12P33/00
Filed: 1960-12-30
Abstract: 11b -Hydroxy-steroids are prepared by contacting 11-unsubstituted-methylene-steroids with oxidising enzymes produced by growing micro-organisms of the species Curvularia prasadii, for example, I.M.I. No. 71475, or a mutant thereof, for example, I.M.I. No. 89062.  In the examples hydrocortisone is prepared from D 4-pregnene-17a ,21-diol-3,20-dione, and prednisolone is prepared from D 1,4-pregnadiene-17a ,21-diol-3,20-dione.  Specifications 769,998 and 770,000 are referred to.
Patent GB-984388-A (GB)
Title: A heated pressure filtration device for separating solid materials from solution
IPC: B01D35/18
Filed: 1962-11-29
Abstract: 984,388. Filters for liquids. CESKOSLOVENSKA AKADEMIE VED. Nov. 29, 1962 [Nov. 29, 1961], No. 45093/62. Heading B1D. A pressure tank 1 has a filter element 8 located on the outside of one end. The tank is supported on a shaft 3 so that prior to filtration the contents may be kept away from the filter element. When filtration becomes necessary the tank is tilted to the vertical position (filter 8 undermost), a valve 9 is opened, and the liquid is filtered under the influence of pressure provided, e.g., by admission of a gas by an inlet (not shown) at a previous stage in the operation. The filter element may be fixed instead of removable (as shown), and may be mounted inside the tank.
Patent GB-1285947-A (GB)
Title: Apparatus for stretching trousers or the like and holding the same in stretched condition
Inventor: DUBE JAN EDWARD PROCHAZKA DE
IPC: A47G25/72
Filed: 1969-09-16
Abstract: 1285947 Trousers stretchers J E PROCHAZKA DE DUBE 16 Sept 1969 [16 Sept 1968] 45636/69 Heading A3V Apparatus for stretching articles of clothing, e.g. trousers, comprises a frame 10 supporting a first member 14 and having pivoted thereto at 18 a second member 22 movable from the position shown into an abutting relationship with member 14 by moving lever 40, the member 14 having pivoted thereto at each end a pair of elements 26, 28 biased into the positions shown by springs 34, 36, such that with the articles 68 on member 22 and caused to contact the elements 26, 28, the elements pivot to the dotted line positions and their corrugated or rubber faces 33 stretch the article. The hinges 30, 32 may be of the type which causes the elements of each pair to move away from each other during pivoting into the dotted positions thereby causing them to stretch the article in two directions at right angles.
Patent GB-1148238-A (GB)
Title: Improvements in or relating to capstan lathes
IPC: B23Q1/26
Filed: 1967-10-06
Abstract: 1,148,238. Lathes. HITACHI SEIKI K.K. 6 Oct., 1967 [6 Oct., 1966], No. 45667/67. Headings B3B and B3T. In a capstan lathe having a slide 1 carrying a tool turret 3 and which is guided for longitudinal movement with respect to the bed 5 in a saddle 2 mounted on the bed, means for supporting and guiding the forward end of the slide 1 comprises a carriage 11 movable with the slide 1 and which is supported on the bed by resiliently mounted roller 20 located in respective recesses 16 in the carriage and guide shoes 23 supported from the carriage and engageable with the underside of the bed. The resilient means supporting the rollers 20 is in the form of springs 18 the combined reactive force of which is greater than the total dead weight of the tool turret and associated parts including the tools. The shoes 23 are pivotally supported on links 22 mounted on adjustable pins 25 on the carriage and the extent of the swinging movement of the links is controlled by eccentrics 27 and 28 positioned one on each side of the link on the carriage so that with the advance and retraction of the carriage 11 with the slide 1 and the friction between the shoes and the bed the link swings backwards and forwards respectively which permits successive controlled deflection and release of the end of the slide whereby a machining action followed by a relief action is effected by the cutting tool. The carriage is automatically engaged by and released from the forward end of the slide during the advance and return movements respectively by a spring biased lever and catch mechanism, Figs. 15, 16 and 17 (not shown), so that when the slide is traversed across the saddle 2 in a feed direction the carriage 11 is engaged with the saddle thus forming a common unit. The carriage is subsequently disengaged from the slide as the slide traverses the saddle on its return movement.