baber/WOPTO huggingface dataset:
Patent GB-455305-A (GB)
Title: Improvements in or relating to lubricants
Filed: 1935-04-17
Abstract: A lubricant, especially suitable for heavy-duty bearings and high-speed movements, and also applicable as a cutting oil, comprises a liquid medium in which has been dissolved or dispersed a compound containing one or more nitro groups attached to an aromatic residue as well as one or more divalent sulphur atoms, or a compound containing one or more nitro groups attached to an aromatic residue together with a compound containing one or more divalent sulphur atoms.  The liquid medium is preferably a mineral, vegetable, animal or synthetic oil possessing marked lubricating properties, though other neutral organic liquids of low viscosity, and greases, may be used, and the above-mentioned additions are usually present in the proportion of about 0,1 to 5 per cent.  According to examples: (1) One part of 2 : 4-dinitrophenyl thiocyanate is dissolved in two hundred parts of a medium-viscosity motor oil; (2) di-o-nitrophenyl disulphide is dissolved in a lubricating oil; (3) di-2 : 4-dinitrophenyl sulphide is dissolved in a lubricating oil; (4) 2 : 4-dinitrophenol and lorol thiocyanate are mixed with a lubricating oil; (5) mixed amyl mercaptans and a -nitronaphthalene are incorporated in a lubricating oil; (6) dilauryldisulphide and a -nitronaphthalene are mixed with a medium-viscosity oil; (7) 2 : 4-dinitrophenyl thiocyanate is dissolved in a mixture of primary normal aliphatic alcohols obtained by the reduction of coconut and/or palm kernel oils, or in benzene.  Other nitro aromatic compounds specified are the nitrobenzenes and their homologues, mono-nitrophenol, b -nitronaphthalene and the di-nitronaphthalenes, alkyl, hydroxy- and halogen-substituted nitronaphthalenes, and nitro diphenyls.  Other sulphur-containing compounds specified are the aryl mercaptans, aryl thiocyanates, aryl sulphides and disulphides, thio-aniline, the thio-toluidines, thio-diphenylamine alkyl sulphides, mercaptals and mercaptols, arylalkyl sulphides, and the liquid sulphur products comprising a complex mixture of saturated and unsaturated alkyl mercaptans and sulphides obtained in the refining of petroleum oils.  Other specified compounds containing both nitro aryl groups and divalent sulphur atoms are the nitro aryl mercaptans. The nitro compounds used preferably belong to the benzene, diphenyl or naphthalene series, and have not more than two nitro groups in a single nucleus.  Specifications 217,606, [Class 91], and 425,569 are referred to.  According to the Specification as open to inspection under Sect. 91, instead of a liquid medium, graphite may be used, or a porous bearing metal, such as phosphor bronze, may be impregnated with the additions.  This subject-matter does not appear in the Specification as accepted.
Patent GB-599201-A (GB)
Title: Improvements in or relating to high frequency amplifiers
IPC: H03F1/08
Filed: 1945-05-11
Abstract: 599,201. Valve amplifying circuits. P. R. T. LABORATORIES, Ltd., and BENHAM, W. E. May 11, 1945, Nos. 11916/45 and 11234/46. Drawings to Specification. [Class 40 (v)] - In a band-pass amplifier for use above ten megacycles, the output-impedance of a valve is matched to the lower impedance of a succeeding valve by the use of an inductive element with an intermediate tap feeding the succeeding valve. The element may comprise a tapped inductor in the anode lead of a valve, Fig. 1a, (not shown), or a parallel-feed arrangement may be employed, Fig. 4a, (not shown).
Patent GB-201610-A (GB)
Title: New dyes of the anthraquinone series
IPC: C09B1/473
Filed: 1922-04-28
Abstract: Salicylsulphonamidoanthraquinones are obtained by condensing salicylic sulphochloride (OH : COOH : SO2Cl=1 : 2 : 4) with aminoanthraquinone compounds.  The products dye wool blue shades in acid baths and may be chromed; or they may be printed on cotton with chrome mordants, or used for dyeing cellulose acetate silk. According to examples, salicylic sulphochloride is condensed with diaminoanthrarufin, 1 : 4-diaminoanthraquinone, or 1 : 4 : 5 : 8-tetraminoanthraquinone.  Specification 202,157 is referred to.ALSO:Salicylsulphonamidoanthraquinones, prepared by condensing salicylic sulphochloride with aminoanthroquinone compounds, dye wool in acid baths, and may be chromed, or printed on cotton with chrome mordants, or used for dyeing cellulose acetate silk. Specification 202,157 is referred to.
Patent GB-432750-A (GB)
Title: Improvements in or relating to incandescent gas mantles
IPC: B65D85/30
Filed: 1934-04-21
Abstract: A radiant for gas fires &c. is made of wire consisting of stainless steel or a nickel iron chromium alloy.
Patent GB-1400012-A (GB)
Title: Distance measurement using microwaves
Inventor: BOSHER DAVID ROBERT
IPC: G01F23/284
Filed: 1972-03-15
Abstract: 1400012 Radar BRITISH STEEL CORPORATION 15 March 1973 [15 March 1972] 12115/72 Heading H4D In a microwave frequency modulation radar distance determining method (and a corresponding apparatus) utilizing two modulation frequencies to remove the fixed error in evaluating the beat frequency, the invention is concerned with further removal of errors by impressing a cyclical phase variation on either the emitted or (preferably) the reference signal. The cyclical phase variation should have a frequency below each of the modulation frequencies and may be of a sinusoidical or a rectangular kind, in the latter case amounting to 180 degrees. One of the modulation signals may be of triangular shape. The invention may be used in cases, in which the distance of the object from a reference point of the thickness of the object or the level of the burden in a blast furnace is to be measured.
Patent GB-1464137-A (GB)
Title: Methods of treating gallium containing compound semiconductors
IPC: H01L21/324
Filed: 1974-03-19
Abstract: 1464137 Gallium-containing semi-conductors WESTERN ELECTRIC CO Inc 19 March 1974 [26 March 1973] 12124/74 Heading C1A [Also in Division C7] A semi-conductor consisting of a galliumcontaining compound, e.g. Ga 1-x X x Y y As 1-y  wherein X is Al or In, Y is P or Sb and x and y = 0-0À95, is treated by growing an oxide on the surface thereof, e.g. by anodizing using water or hydrogen peroxide with the pH suitably adjusted as electrolyte; drying the oxide by heating to 150-300 C. for 0À5-5 hrs. in a non- oxidizing ambient, e.g. nitrogen; and subsequently annealing the dried oxide in a non- oxidizing ambient at 450-700 C. for 15 mins. -12 hrs. The oxide coating may be used to form a masking pattern prior to diffusing impurities, e.g. Zn, P, Se or Sn into selected portions of the semi-conductor.
Patent GB-768536-A (GB)
Title: Fluid pressure operable vehicle brake control apparatus
IPC: B64C25/42
Filed: 1955-04-27
Abstract: 768,536. Anti-skid brakes. WESTING- HOUSE AIR BRAKE CO. April 27, 1955 [April 28, 1954], No. 12141/55. Class 103 (1). In an anti-wheel slide brake control system for aircraft of the kind described in Specification 674,506, it may occur that with repeated braking cycles, the pressure in the supply reservoir might be reduced below that necessary to provide a proper application of the brakes and to avoid this possibility a safety interlock device 7 is provided which operates to prevent venting of the brake cylinder under these conditions. On operation of the inertia control device 5 to tilt lever 27 to open valve 47, the space below piston 31 is exhausted and the consequent pressure differential across restricted passage 35 in the piston causes the valve member 29 to be moved down, so that pressure from the brake cylinder may be released by way of pipe 12, passage 38, pipe 9 and exhaust port 65 in the device 7. If the pressure in the reservoir 2 should fall below a certain value, such pressure acting in space 60 at the lower end of device 7 allows the spring 68 to force down the piston 61, thus cutting off the escape port 65 and preventing automatic venting of the brake cylinder until the supply pressure has been restored. The device 7 may be modified so as to be snap-acting. In the arrangement shown in Fig. 4, the pipe to the brake cylinder 3 is connected through the safety interlock device 98 comprising a slide valve piston which, on drop of reservoir pressure acting in chamber 104, is moved downwardly by spring 106 so as to cut off pipe 12 from pipe 99, the latter then being connected direct to paper 8 from the control valve 4.
Patent GB-1003378-A (GB)
Title: Monitoring the thickness of films being vacuum deposited
Inventor: WARREN STANLEY WILLIAM
IPC: C23C14/54
Filed: 1964-03-23
Abstract: The thickness of thin films deposited from material heated in a rotating vessel on one or more stationary workpieces in a vacuum is monitored by detecting the film thickness deposited on a stationary workpiece, e.g. by directing a ligh beam on to it and measuring the beam after it has passed through or been reflected from the workpiece.  As shown, a plurality of workpieces 4 are placed on a <PICT:1003378/C6-C7/1> stationary support 5 on legs 6 within a chamber 1 sealingly mounted on a base plate 2.  A vessel 7 containing the material to be evaporated is carried by copper arms 8 and 9 mounted on a shaft, comprising copper core 10 and outer conductor 11 insulated by an intermediate layer 12, passing through the base plate 2. The chamber is evacuated, and the vessel is rotated by belt drive 15 driven by a motor 17 while it is heated by supplying current to conductors 10 and 11 via slip-ring assembly 14 so that material is deposited evenly on all the workpieces. The film thickness on one of the workpieces 4a is continously tested during deposition by passing a light beam 21 through pressure resistant windows 19 and 20, which may be in the base, sides or roof of the chamber.  When the thickness has reached the desired value, deposition is terminated, e.g. by operating a shutter which interrupts the evaporant stream. The method may be applied to the manufacture of optical filters, semi-conductors or thin magnetic films.
Patent GB-997824-A (GB)
Title: A process for preparing sodium antimonylgluconate
Inventor: HOOD HAROLD MALCOLM
IPC: C07C59/105
Filed: 1962-03-29
Abstract: Sodium antimonyl gluconate is prepared by a process which comprises ensuring that the pH of an aqueous solution of sodium antimonyl gluconate is below 6.3, raising the pH of the solution to between 6.3 and 6.4 and precipitating the sodium antimonyl gluconate from the solution by the addition of a solvent which preferentially precipitates it.  In a preferred process, the pH is advantageously less than 6.0 prior to being raised to 6.3 to 6.4. The solution of sodium antimonyl gluconate may be prepared by reacting sodium hydroxide or sodium alkoxide with a mixture of antimony trichloride or antimony oxyhydrate and gluconic acid or a functional derivative thereof, the pH being maintained at below 6.3; or from previously prepared sodium antimonyl gluconate which is dissolved in water, the pH of the solution adjusted to between 5.4 and 5.5, the compound precipitated by the addition of solvent and then subjected to the process described above.  It is preferred to use equimolar amounts of the trivalent antimony trichloride or oxyhydrate and gluconic acid derivative and a slight molar excess of the sodium hydroxide or alkoxide. The pH of the sodium antimonyl gluconate solution may be raised with, for example, sodium hydroxide, carbonate or bicarbonate or with a sodium alkoxide.  Examples of solvents for the preparation are water and methanol. Methanol may be used as a precipitating solvent.
Patent GB-503656-A (GB)
Title: Shears
IPC: B26B13/28
Filed: 1938-04-22
Abstract: 503,656. Hand shears. FEATHER, D. C., and NICKELSEN, W. D. April 22, 1938, No. 12153. [Class 30] The blades 1, 2 are pressed together by a bow spring 7 secured by the pivot screw 3. The end 7a rests in a longitudinal groove 9 in the blade 1. A shoulder at the other end of the spring is turned down to bear on the blade at a point in alignment with the cutting edge.
Patent GB-1537265-A (GB)
Title: Fixing device
IPC: F16B13/06
Filed: 1976-03-22
Abstract: 1537265 Screw sockets RAWLPLUG CO Ltd 22 March 1976 [24 March 1975] 12201/75 Heading F2H A sheet-metal fastening element for use with a screw to secure an article to a panel comprises two legs 1, 2 connected together at one end by a transverse portion 7 having a plain hole (9) (Fig. 3, not shown) for receiving the screw, portions 6 of the legs adjacent said one end forming struts and being joined by transition portions 5 to the remainder 4 of the legs. In use the transverse portion 7, the strut portions 6, and the transition portions 5 are passed through a hole in the panel to project behind the panel, and the screw engaging in the hole (9) is tightened to draw the transverse portion 7 towards the panel so that the transition portions 5 extend radially outwardly behind the panel, while the strut portions 6 are not deformed. The free ends of the legs have outwardly bent flanges 3 to engage the front of the panel adjacent the hole therethrough. The edges of the strut portions 6 and the transverse portion 7 are bent up to form stiffening flanges 8. Cutouts 11, (12) are provided in the sides of the element between the various portions to leave weaker hinge parts. The edge of the hole (9) may have a radial slit (10). More than two legs may be provided.
Patent GB-801060-A (GB)
Title: Improved method for aromatization of light naphthas
IPC: C10G61/06
Filed: 1957-04-15
Abstract: Hydrocarbon fractions boiling within the range 110-250 DEG  F. are hydroformed over a platinum-group metal on alumina at 800-975 DEG  F. and below 125 p.s.i.g. to produce a hydroformate having an octane number (research clear) of about 80, and the liquid hydroformate is solvent extracted to produce an aromatic-rich extract and an aromatic-poor raffinate which latter is recycled to the hydroforming zone.  The hydroforming is preferably carried out as described in Specification 796,310.  Solvents which may be used are lactones, 2-pyrrolidone, adiponitrile, dimethylsulphoxide, furfural, phenol and sulphur dioxide, butyrolactone being preferred.  Temperatures of 50-500 DEG  F. and sufficient pressure to maintain the liquid phase, e.g. 15-750 p.s.i.g. may be used employing 0.5-3 volumes of solvent per volume of hydroformate. Batch mixing and settling or continuous countercurrent extraction techniques can be employed, and the solvent can be recovered by fractionation, cooling or by adding water.
Patent GB-1147589-A (GB)
Title: Magnetic storage matrices
IPC: G11C5/04
Filed: 1968-03-13
Abstract: 1,147,589. Magnetic storage apparatus. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 13 March, 1968 [16 March, 1967], No. 12218/68. Heading H3B. [Also in Division H1] A magnetic storage matrix is constructed by using conductors having two layers of insulating material of which the outer layer has the lower thermal softening point, the conductors being arranged into two adjacent orthogonal groups of parallel conductors which are heated so as to cause the outer insulating layers to soften and merge. On cooling, the orthogonal conductors become mechanically coupled by the merged layers and are then coated with a thin layer of magnetic storage material. The conductors may be of copper covered by an inner lacquer layer, e.g. polyvinyl acetate or polyurethane, and an outer layer of lower-melting-point insulating material such as polyvinyl butyral. The conductors are supported on a rectangular frame. The magnetic storage material is applied by electrodeposition after a nickel layer is deposited on the conductor arrangement by chemical reduction.
Patent GB-845148-A (GB)
Title: Clutch for air-cooled internal combustion engines, especially for small-size motor vehicles
IPC: F01P5/02
Filed: 1958-04-18
Abstract: 845,148. Friction clutches; gearing for stopping and starting machinery. NSU WERKE A.G. April 18, 1958 [April 26, 1957], No. 12385/58. Class 80 (2). [Also in Group XXVII] The crank-shaft 1 of an air-cooled internal combustion engine carries a driving clutchplate 7 engaged by a driven clutch disc 5 mounted upon the sleeve-like hub of an output pinion 2 spatially positioned between the clutch housing 20 and the engine crankcase. The clutch is engaged by springs 16 acting on a pressure-plate 4 and is disengaged by operation of a chain (not shown) connected to a lever 15 which turns a threaded shaft 14 in the clutch housing, thus withdrawing a cup-shaped connector 12 having a peripheral flange engaging the inner ends of radial throw-out levers 11 pivoting on studs 10, the outer ends of the throw-out levers abutting pins 9 fast with the clutch pressure-plate. The driving clutchplate 7 carries a fan 21 with blades 22 which draw in air through passages 23 and pump it through a spiral passage 24 to cool the engine.
Patent GB-474401-A (GB)
Title: Improvements in or relating to cellulose derivative filaments, yarns, fibres and thelike
IPC: D02G1/02
Filed: 1936-05-01
Abstract: A process for the production of improved crimped yarns comprises subjecting yarns with a basis of organic derivatives of cellulose to the operations of twisting, setting the twist, untwisting and thereafter the yarns or the filaments or fibres composing them to treatment with a bath of hot aqueous liquor. Preferably, the yarns contain a high proportion, e.g. more than 50 per cent of filaments or fibres of flat cross-section.  The yarn may be of continuous filaments or staple fibres, or may be converted from one to the other before or after the hot aqueous treatment which may be applied to staple fibres.  When the material is at some stage converted to staple fibres, they may be mixed with other fibres.  A suitable method of preparing filaments with flat cross-section for use according to the invention is to spin a solution containing cellulose derivative in a lower concentration than that necessary to produce bulbous filaments, e.g. 20--24 per cent.  The operations of twisting, setting the twist and untwisting may be effected according to Specifications 424,880, 442,073, and 464,981, [all in Group IX].  The aqueous liquor is preferably boiling or almost boiling, and may contain a small proportion, e.g. 1 gram/litre of a wetting agent. The treatment may be for \ba1/2\be--1\ba1/2\be hours at the boil, and may be followed by washing in warm or hot water.  The process may be combined with a delustring treatment, e.g. by incorporating a white pigment either in the spinning solution or as an aftertreatment in the materials.  Salts, e.g. sodium chloride or sulphate, or sugars in concentration of 10--20 per cent may be added to the aqueous treatment bath to diminish its delustring effect.  The hot aqueous treatment may be effected under pressure at a temperature above 100 DEG  C.  Advantageously, the hot aqueous treatment may be applied to a doubled yarn having a light doubling twist in reverse direction to any twist in the constituent yarns, e.g. obtained from 2 or 3 yarns, having either no twist or light twist, i.e. not more than 5 turns/inch in the same direction, twisted together with a relatively high degree of twist, the twist set, e.g. by steam, and then untwisted to leave a light residual doubling twist in the reverse direction to that in the constituent yarns.  The production of such a doubled yarn may precede or follow a separate twisting, setting and untwisting process, in which the twist may be false.  For products of high denier, two doubling operations may be employed.  A doubling operation may be combined with a direct conversion process from a continuous filament to a staple fibre yarn.  Specifications 246,879, 260,312, [both in Class 15 (ii)], 424,683, 424,752, 424,830, 424,879, [all in Group IX], and 459,781 also are referred to.
Patent GB-124498-A (GB)
IPC: B65H75/44
Abstract: 124,498. Lee, C. L. V., and Binyon, B. Feb. 7, 1916. Reels and reel-carriages. - A winding- reel suitable for use as a carrier for an aerial for a wireless telegraph installation on air-craft is provided with a braking- device for arresting rotation of the reel and with a pawl and ratchet device adapted when required to prevent an unwinding rotation of the reel, the braking - device being arranged to come into operation to bring the reel to rest before the pawl is allowed to engage the ratchet. The reel comprises an insulating drum 3 arranged between two insulating side-plates 1, 2, to one of which is attached the braking-device comprising a ring 10 and two pivoted brake-shoes 12 controlled by a cam 19 at the end of a pivoted control-lever 17. The brake-shoes 12 engage the rir.g 10 when the lever 17 is in its central position, but are released by a spring 13 when the lever 17 is in either of its extreme positions. Mounted cn the lever 17 is a spring pawl 18 which is adapted to engage ratchet teeth 11 on the outside of the ring 10 when the lever is in its left extreme position, Fig. 1, so as to permit winding-in rotation of the reel only. When the lever 17 is in its right extreme position, the reel is entirely free. Thus, in moving the lever over from the right extreme to the left extreme position, the. reel is always brought to rest by the engagement of the braking- device at the central position. The brake-shoes 12 are preferably formed with slots 14 in order to give them resiliency. The wire or aerial passes to a terminal' 26 between two grooved rollers 23, 24 on a small bracket 25 insulated from the main bracket by an insulating strip 27.
Patent GB-331952-A (GB)
Title: Manufacture of dyestuffs of the anthraquinone series
IPC: C09B1/34
Filed: 1929-04-22
Abstract: 331,952. Imperial Chemical Industries, Ltd., Shepherdson, A., and Tatum, W. W. April 22, 1929. Anthraquinone dyes are made by condensing a. 4-halogeno-1-aminoanthraquinone-2-sulphonic acid with a p-diamine in the presence of copper oxide as catalyst. In an example, 4-bromo-1-aminoanthraquinone-2-sulphonic acid (sodium salt) is boiled with p-phenylenediamine, sodium carbon. ate and water and copper oxide added; the dyestuff is precipitated with acetic acid and dyes wool in level greenish-blue shades. Specification 10378/14 is referred to.
Patent GB-143213-A (GB)
Title: Improvements relating to the carburation of air with liquid hydrocarbon fuel for internal combustion engines
IPC: F02M1/00
Filed: 1920-05-06
Abstract: 143,213. Grapes, G. Hamilton-. Feb. 27, 1919, [Convention date]. Vaporizers, external.-The unvaporized fuel particles in the mixture passing from the carburettor to the engine are trapped and vapor. ized in a retort 10 surrounded by a heating - jacket 9 through which exhaust gases from the manifold 6 are diverted by a thermostatically-controlled valve 11. The valve 11 is pivoted at 12 and is operated through a rod 14 provided with a foot 15 adapted to be lifted by the expansion of a series of crossed strips 16 built up of metal plates having different coefficients of expansion. The mixture from the carburettor is delivered into an expanding chamber 17 provided with segmental baffles 20 and leading to an offset passage 18 which crosses angularly the mouth 19 of the retort 10; the heavier unvaporized particles in the mixture are trapped in the retort and vaporized; the vapour produced passes out of the retort into the main stream of mixture which flows through an expansion chamber 21 with a tapering outlet 22 to the engine 5. The chamber 21 has a capacity in excess of, and preferably twice, that of any one cylinder of the engine. The baffles 20 are staggered relatively to one another, and are attached to a short tube secured in the chamber 17 by a bayonet-slot and screw. According to the Specification as open to inspection under Sect. 91 (3) (a) the valve 11 may be constructed of metal having a high coefficient of expansion, so that the outer edge curves or droops when heated and reduces the amount of exhaust gas admitted to the jacket 9. This subject-matter does not appear in the Specification as accepted.