baber/WOPTO huggingface dataset:
Patent GB-631258-A (GB)
Title: Improvements in or relating to the utilisation of fuel gas containing low purity hydrogen in the catalytic refining of petroleum hydrocarbons
IPC: B01J23/44
Filed: 1947-02-14
Abstract: Petroleum and like hydrocarbons are refined, to free them from sulphur, peroxides and unsaturated compounds such as diolefins, by contacting them with a fuel gas containing low purity hydrogen at 200-800 DEG  F. in the presence of a catalyst comprising 0.1-10 per cent by weight of the total catalyst of platinum or palladium incorporated with a hydrous oxide carrier having ultramicroscopic pores.  Hydrocarbon fractions derived from petroleum or equivalent sources such as the Fischer-Tropsch synthesis process and hydrocarbon fractions obtained by processing treatments such as thermal or catalytic cracking may be subjected to the refining treatment.  The treatment is particularly suitable for application to naphtha fractions boiling in the gasoline range.  Suitable fuel gases are manufactured town gas, coal gas, water gas, blue water gas, coke oven gas, carburetted water gas and natural gas.  The hydrous oxide catalyst carrier may be hydrated alumina or silica gel.  Pelleted catalyst may be used in a fixed bed operation or catalyst granules may be employed with a fluid or moving catalyst technique.  Elevated pressures may be employed.  In an example a heavy naphtha, obtained by cracking a petroleum distillate boiling in the gas oil range in the presence of a fluidized silica alumina gel catalyst, is passed together with town gas over pellets of hydrated alumina containing 2 per cent finely-divided platinum.  Preparation of catalyst.-Platinum or palladium may be incorporated with the hydrous oxide carrier, (1) by impregnation of the carrier with a salt such as ammonium chloroplatinate or chloroplatinous acid, followed by slow drying and formation of the metal by heat decomposition; or (2) by mulling the carrier in powdered form with particles of the metal, for example, platinum black, followed by wet extruding or pilling and drying.
Patent GB-506445-A (GB)
Title: Improvements in or relating to liquid agitating, mixing or stirring devices
IPC: B01F31/42
Filed: 1938-02-14
Abstract: 506,445. Mixing &c. devices. REAVELL, J. A. Feb. 14, 1938, No. 4525. [Class 86] A mixing &c. device comprises a paddle b carried on a pivoted arm c operated by a nut h and double-threaded screw k. The throw may be varied by adjusting the pivot relatively to the screw-and-nut mechanism.
Patent GB-372719-A (GB)
Title: Machine for bending tubes
IPC: B21D7/06
Filed: 1932-02-16
Abstract: 372,719. Portable angular benders. PETITIAUX, M., 16, Rue Notre-Dame, Toulouse, France. Feb. 16, 1932, No. 4574. Convention date, Feb. 26, 1931. [Class 83 (iv).] A portable threepoint tube-bender is actuated by a variable-throw handpump. A fluidoperated plunger 6 returned by a spring 7 sliding in the cylinder 9 co-operates with rollers 3 mounted on brackets 4 to bend a tube 2, the pressure required to actuate the plunger 6 being supplied by a vertically arranged pump 11, driven through a connecting rod 13 by the lever handle 26. The stroke of the pump is varied by sliding the block 14 along the crank 15, notches being provided on a graduated bar 19 to give the throw required for bending pipes of various diameters. A pipe vice 22 is carried by the cylinder 9 which has a casing 10 providing a reservoir for fluid.
Patent GB-947438-A (GB)
Title: Improvements in toothed gearings
IPC: F16H55/08
Filed: 1962-02-07
Abstract: 947,438. Toothed gearing. ALLMANNA SVENSKA ELEKRISKA A.B. Feb. 7, 1962 [Feb. 10, 1961], No. 4642/62. Heading F2Q. In a toothed gear pair comprising a pinion 1 and a wheel 2, the pinion teeth are partly or wholly of harder material than the wheel teeth and the rolling circle A 1  of the pinion lies at or outside its tip circle, thereby avoiding contact on the dedendum of the wheel teeth 2. The arrangement ensures that all sliding takes place in the same direction as the rolling, this being stated to reduce wear. The teeth may be involute. cycloidal, circularly curved, or of other form, It is stated that preferably, in order to avoid weakening the pinion teeth, the profiles of both the pinion and the wheel are displaced outwardly from their respective centres.
Patent GB-225747-A (GB)
Title: Improvements in speed indicator for automobiles
IPC: B60Q1/54
Filed: 1924-02-25
Abstract: 225,747. Kosofsky, A. Feb. 25, 1924. Particular speeds, visual signals for.-A flag signal 10 pivoted at 12 and normally held hidden in a box 13 is arranged to be released so as to be visible to persons outside of the motor vehicle upon which it is mounted, when the vehicle exceeds a predetermined speed, and to remain so displaved. The signal is released electromagnetically by a speedometer 17 when the pointer makes an electric contact, an electromagnet 19 being arranged to attract a catch 15 whereupon a spring 14 pulls up the flag. A number of signals may be arranged to be released at different speeds.
Patent GB-635875-A (GB)
Title: Improvements in control circuit arrangements for electric discharge tubes
IPC: H03F1/54
Filed: 1948-02-18
Abstract: 635,875. Valve circuits. METROPOLITANVICKERS ELECTRICAL CO., Ltd. Feb. 18, 1948, No. 4773. Convention date, April 27, 1946. [Class 40 (vi)] A protective arrangement for an electron discharge tube supplying a load circuit, comprises a relay actuated in accordance with the difference in the power through the discharge tube and the power absorbed by the load circuit, so as to disconnect the H.T. supply from the discharge tube, if the said two powers differ by more than a predetermined amount. A power generator 2 drives a Class C amplifier 1 feeding an aerial or other load 12 represented by components 13, 14, 15 tunable to the applied frequency. Part of the radio frequency voltage across the load is taken from a capacity potentiometer 18, 19 and rectified at 17 to give a steady voltage across condenser 22 which is a measure of the radio frequency voltage across the load 12. This voltage is applied to one terminal of the operating winding of a relay 24, the other terminal being connected to the cathode of valve 1, which is at a potential dependent on the average space current through valve 1. During normal working when load 12 is properly matched, the two voltages applied to relay 24 are equal, for a change in current through valve 1 is accompanied by a corresponding change of voltage across load 12. Thus no current flows in the operating coil. If, due to some fault, the radiofrequency voltage changes without a corresponding change in the current through valve 1, current flows through relay 24 to disconnect the high-tension supply to the screen grid and anode of valve 1 to prevent overload. If desired, the screen potential only may be disconnected. The relay 24 may operate with time delay so as to permit momentary overload. Also an alarm device may be actuated.
Patent GB-623805-A (GB)
Title: Improvements in and relating to textile products
IPC: D06Q1/02
Filed: 1946-02-15
Abstract: Textile products with surfaces having a glazed finish and which are free from projecting ends of staple fibres are made by a process comprising subjecting to pressure by a polished metal surface a textile product consisting of fibres which do not substantially change in shape or tensile strength when heated for a short time to below 200 DEG  C., and containing a minor amount of fibres of polyethylene or hydrolysed interpolymer of ethylene and vinyl acetate, the said pressure being applied when the textile product is heated to a temperature at which polymers or hydrolysed interpolymers of ethylene have a melt viscosity of not more than 50,000 poises, the temperature and duration of the heating being insufficient to damage the other fibres of the textile product, and cooling the textile product until the ethylene polymers or hydrolysed interpolymers are solid, either during or after such treatment.  The process is applicable to yarns, cord, braid and fabrics.  The softening of the polymer or interpolymer is not such as to cause a number of strands or a coiled strand to fuse together; therefore fabric should be in the form of a single sheet.  This danger is avoided by working the process continuously, but in some circumstances fabric may be processed more easily in a non-continuous manner.  Suitable fibres for the basis of the yarns include cotton, wool, flax, silk, nylon, rayon and "Ardil" (Registered Trade Mark).  A suitable polyethylene is "Alkathene" (Registered Trade Mark), which has a viscosity at 130 DEG  C. not greater than 20,000 poises.  The preferred interpolymers are those with an ethylene/vinyl acetate molecular ratio between 2.5 : 1 and 3 : 1.  If desired the yarns may be prepared so that the fibres of the ethylene polymer or hydrolysed interpolymer lie on the surface of the composite yarn.  The yarn &c. may be heated by any suitable means and pressed during or immediately after the heating by, for example, passage through a heated die having a slightly tapered bore.  The length and temperature of the die depend on the fibre mixture, the diameter and rate of movement of the yarn &c., its temperature before entering the die and on whether the die should chill the polymer or interpolymer.  Fabric may be passed through calendering rolls or stamped by a stamping machine using heated platens.  Cooling may be done rapidly, for instance, by immersion in a liquid. Specifications 471,590, 472,051, 497,643, 511,054, 569,927, 582,093, 593,929; 602,549 and 602,550, [both in Group IV (a)], are referred to.
Patent GB-806413-A (GB)
Title: Methods for agglomerating vulcanization accelerators
IPC: C08J3/21
Filed: 1956-02-16
Abstract: Agglomerates for compounding into rubber are prepared by the process described in Specification 790,882, modified by the omission of the step of coagulating the latex and removing excess water.
Patent GB-1261072-A (GB)
Title: An expansion joint sealed by a sealing element
IPC: E04B1/68
Filed: 1969-01-29
Abstract: 1,261,072. Expansion joint covers. P. SCHULTE-STEMMERK K.G. FUR INDUSTRIE UND HANDEL. 29 Jan., 1969 [1 Feb., 1968], No. 4853/69. Heading E1B. An expansion joint cover assembly comprises a mushroom type cover strip 4 the stalk having external serrations 7 or having a longitudinal groove with serrations on the inside faces of this groove (Fig. 2, not shown). The strip is held in position by a rail 5 provided with a serrated groove 6 into which the web fits or by a rail one web of which is serrated and fits in the groove in the web of the cover strip (Fig. 2, not shown). The rail is secured to one element 1a only by adhesive, bolt screw or the like, preferably with an interposed strip of cellular rubber. The head of the strip may be bent to cover joints between elements at right angles (Fig. 5, not shown). The strip may be of hard P.V.C. or both the strip and the rail may be of aluminium or its alloys.
Patent GB-817529-A (GB)
Title: Improved spinal traction apparatus
IPC: A61H1/02
Filed: 1958-02-14
Abstract: 817,529. Surgical traction tables. GRAFTON ACCESSORIES Ltd., and RENN, F. W. Feb. 14, 1958, No. 4902/58. Class 81 (2). Surgical traction apparatus has a harness 23, 34 adjustably mounted between the upper ends of vertical rods 20, 20, each attached at an intermediate point to the end of a couch 1, the rods being connected together, below these points, through an inextensible member 35, in order to avoid tensile stresses in the couch. In the form shown the rods are held adjustably in clamps 12 carried on frames 13, which are themselves attached to the bed frame by screws and wing nuts 19, and a wire cable or chain 35 is adjustably connected between the two frames. The harness member 34 is connected to a spring gauge 29 on a slide 26, the position of which, relative to the top 24 of the rod 20, may be adjusted by a hand-operated screw 27. In order that the equipment may be folded under the couch, when not required, the frames 13 are mounted on pivots 10 on supports 6, which are themselves secured to the couch, and, by this means, when thumbscrews 19 are loosened, the rods and frames may be pivoted downwards to come under the couch.
Patent GB-1294586-A (GB)
Title: Improvements in or relating to ball valves
Inventor: DELECOURT ROGER
IPC: F16K5/06
Filed: 1970-02-02
Abstract: 1294586 Valves R DELECOURT 2 Feb 1970 [4 Feb 1969] 4944/70 Heading F2V In a ball valve having a closure member 8 whose pivots 9 and 10 are supported in needle bearings 11 and 12 respectively, sealing of the closure member is effected by means of two identical seat assemblies 17 and 18 which are slidable in the bores of respective rings 2 and 3 forming part of the valve housing. Seat assembly 17 is of annular formation, carries a ball-contacting seal 17a of plastics or graphite and a bore-sealing ring 19, and is urged towards the closure member by an L-shaped annular bearing plate 21 subjected to the action of a plurality of springs 22, the tension of each such spring 22 being adjustable by means of a screw 23. Removal of housing screws 2, and hence of flange couplings 4 and 5, facilitates access to the seat assemblies for the adjustment or removal thereof.  In modifications (Fig. 2 to 6, not shown), various arrangements are indicated for subjecting the seat assemblies to a force directed towards the closure member with the force in each such arrangement being adjustable. Additionally (Fig. 2), the valve body is provided with plugged bores through which adjustment of the seat assembly tension may be effected without dismantling of the valve coupling flanges.
Patent GB-549390-A (GB)
Title: Improvements in or relating to a process of making resinous material and the resin resulting therefrom
IPC: C08G65/34
Filed: 1941-04-16
Abstract: 549,390. Furfuryl alcohol-lignin sulphonic acid condensation products. BURGESS, A. F. (Marathon Paper Mills Co.). April 16, 1941, No. 4966. [Class 2 (iii)] Resinous products soluble in methyl, ethyl, or butyl alcohols, acetone, dioxane, and " Cyclonol" (cyclic acetal) and suitable as coating or moulding agents are produced by heating furfuryl alcohol with a lignin sulphonic acid or salt thereof. Lignin sulphonic acids or salts thereof as produced by the processes described in U.S.A. Specifications 1,848,292 1,948,858 2,057,117, and 2,077,884,are particularly suitable especially the partly desulphonated products produced by leaching these products with acids 100 parts furfuryl alcohol and 20 parts partially dehydrated lignin sulphonic acid are heated for 24 mins. from 40 to 65‹C. ; the viscous mass obtained gives on cooling a shiny hard resin.
Patent GB-1521778-A (GB)
Title: Dielectric optical waveguides
IPC: G02B6/14
Filed: 1977-04-28
Abstract: 1521778 Mode coupling in optic fibres POST OFFICE 28 April 1977 [9 Feb 1976] 04979/76 Heading G2J An optic fibre 5, having a plastics sheath 6 is crimped by a device 7 (or a helical spring) to deform the fibre slightly. It is stated that thereby differing modes propagating in the fibre are coupled.
Patent GB-779713-A (GB)
Title: Improvements in or connected with analytical balances
Inventor: HODSMAN GEORGE FRANCIS
IPC: G01G23/04
Filed: 1955-02-19
Abstract: 779,713. Weighing apparatus. OERTLING, Ltd., L. Feb. 20, 1956 [Feb. 19, 1955], No. 5032/55. Class 143. A relieving frame 2 which is vertically movable by a rod 1 to raise the weigh beam of an analytical balance off its knife edge bearings, is provided with a pair of arms 3 which engage the peripheries of stationary guide pins 4 and so prevent rotation of the frame. Pins 4 are adjustably rotatable about eccentric axes 4a.
Patent GB-872520-A (GB)
Title: Improved search heads for metal detectors
Inventor: MINCHIN DONALD CHARLES
IPC: G01V3/10
Filed: 1960-02-12
Abstract: 872,520. Locating conductive bodies. BUSH & RANK CINTEL Ltd. Feb. 12, 1960, No. 5073/60. Class 37. A head for a detector of tramp metal present in material 2, Fig. 1, carried by a conveyer belt 3, comprises an apertured rectangular former 1, and a coil 4 each turn of which passes, via apertures 5, 6, 7, and 8 in the former, along the inside of one pair of opposite sides of the former and the outside of the other pair of opposite sides, the pairs being chosen so that the maximum flux density occurs in the path of the material 2. For a trough-shaped conveyer 13, Fig. 2, a former 11 of re-entrant shape is provided, each turn of coil 12 passing through apertures 17, 18, 19 and 20. The coil wire may, over at least part of its length, be secured in grooves in the former by a potting compound.
Patent GB-534590-A (GB)
Title: Improvements in or relating to hot water systems
IPC: F24D17/00
Filed: 1940-03-20
Abstract: 534,590. Hot-water supply systems. BIRCH, G. March 20, 1940, No. 5147. [Class 64 (i)] The float - controlled cold water inlet valve 6 in a hot-water storage tank 1 has a discharge pipe 10 extending to the lower part of the tank, and the float 16 is supported in its lowest position by a tank 9 which is in communication with the storage tank through a pipe 15 terminating below the level of the hot-water draw-off pipe 4. The tank 9 is smaller in width than the storage tank and is supported on the top of the storage tank by bent over rims 14.
Patent GB-615415-A (GB)
Title: Improvements in or relating to diving apparatus
IPC: B63C11/22
Filed: 1945-03-01
Abstract: An open circuit respiratory apparatus for divers comprises a source of compressed gas, a lung-operated diaphragm valve regulating the supply of gas in which the diaphragm is directly affected by the surrounding water pressure, a mouthpiece or similar device communicating with the diver's mouth or nose and connected with the pressure reducing valve, and an exit gas pipe from the mouthpiece which is closed by a non-return valve located at a distance of not more than 10 cms., and preferably less than 3 cms., from the centre of pressure of the diaphragm of the lung-operated valve, which may have a perforated cover, and the non-return valve on the gas exit pipe from the mouthpiece may consist of a flattened rubber pipe.
Patent GB-721991-A (GB)
Title: Improvements in or relating to insulating and dielectric compositions for electric cables
IPC: H01B3/22
Filed: 1950-03-01
Abstract: An electrically insulating composition comprises a mineral hydrocarbon oil containing from 0.1 to 5 per cent by weight of a nitro substituted aromatic hydrocarbon or nitro-substituted heterocyclic compound.  The nitro-substituted materials may contain additional substituents such as halogen or hydroxy or alkyl groups. The following compositions may be used:  (1) 99 per cent hydrocarbon oil and 1 per cent nitrobenzene.  (2) 98 per cent hydrocarbon oil and 2 per cent para-nitrotoluene.  (3) 99.8 per cent hydrocarbon oil and 0.2 per cent 6-nitroquinoline.  (4) 99 per cent hydrocarbon oil and 1 per cent 6-nitro-8-methoxy-quinaldine.
Patent GB-575766-A (GB)
Title: Improvements in and relating to the production of aromatic bodies
IPC: C07C15/38
Filed: 1941-04-23
Abstract: Natural petroleum oil fractions of which substantially the whole boils within the range 95 DEG  C. to 180 DEG  C. are converted into a liquid mixture of aromatic substances by subjecting the starting materials to a heat treatment within the temperature range 500-750 DEG  C. in the presence of a hydrogenation and dehydrogenation catalyst at a space velocity of 0.1-0.5 litres of starting material per litre active catalyst volume per hour. The preferred catalysts are those selected from the group consisting of chromium, cobalt, copper, iron, manganese, molybdenum, nickel, platinum, palladium, silver tungsten and vanadium, their mixtures or alloys.  The products consist largely of aromatic hydrocarbons including benzene, toluene, ethyl-benzene, styrene, or mixtures thereof and xylenes.  Gaseous products are also obtained which contain methane, ethane, propane, butane, ethylene, propylene and butenes.  The catalyst may be either in compact form or on a carrier such as asbestos, pumice or bentonite.  The reaction may be carried out in one pass, or where an incompletely aromatised product is first formed, this may be returned to the system and recirculated.  The aromatised products of boiling range 145-180 DEG  C. obtained according to the invention, may be further treated by the same or different hydrogenation catalyst, whereby higher and lower boiling aromatics especially chrysene are obtained.  In examples: (1) gasoline is passed through a steel tube containing as catalyst a mixture of fine copper and iron turnings in the ratio of 5 : 1.  The products are passed through a tower filled with spindle oil to extract light products and separate them from the non-condensable gases.  The liquid product is fractionated to isolate benzene toluene, ethylbenzene, higher alkylbenzenes and heavy aromatics. The higher alkylbenzene fraction can be separated into isopropyl - benzene, mesitylene, tert. - butyl benzene, 1 : 2 : 4-trimethylbenzene sec-butylbenzene and indene.  This fraction resembles the solvent naphtha from coal tar.  This fraction (140-180 DEG  C.) may be subjected to catalytic cracking with the catalysts used in its preparation, to give lower aromatics and also naphthalene, methyl naphthalenes, ethyl naphthylene, di- and tri-methyl naphthalene, anthracene, 2-methyl anthracene, 2 : 7-dimethylanthracene, chrysene, pyrene, dihydro-pyrene and 1 : 2 - (21.11 - naphtho) - 7 : 8 - benzo phenanthrene.  In another example, n-heptane is passed over the same catalyst as in example (1).  The products consisted of gaseous olefines and paraffins, together with aromatic products.  Specifications 552,216, 574,963, 574,973, 575,768 and 575,769 are referred to.
Patent GB-1412533-A (GB)
Title: Removing carbonyl compound impurities
IPC: C07C15/02
Filed: 1973-02-02
Abstract: 1412533 Removing carbonyl compound impurities from hydrocarbons PETRO-TEX CHEMICAL CORP 2 Feb 1973 [3 Feb 1972] 5257/73 Heading C5E Carbonyl compound impurities are removed from unsaturated hydrocarbon streams, such as an oxidative dehydrogenation effluent, by contacting the impure hydrocarbon containing less than 5 mol. per cent free O 2  at 400‹ C. or more with a solid catalyst comprising (1) at least one metal selected from Groups Ib, IIb, IVb, VIb, VIIb and VIII and (2) at least one metal selected from Groups Ia and IIa. The metals which may be in the form of oxides, hydroxides or salts may be (1) Ti, Cr, Zr, Mn, Cu, Zn, Pt, Pd, Co and/or Fe and (2) Li, Na, K, Rb, Be, Mg, Cu, Sr, and/or Ba. The catalyst may be supported on or combined with SiO 2  or Al 2 O 3 . Preferred catalysts are ferrites. Examples describe the oxidative dehydrogenation of butene-2 to butadiene-1,3 in the presence of steam and the subsequent removal of carbonyl impurities from the product by contact with Ba ferrite/K 2 CO 3  and Mn ferrite/K 2 CO 3 . Numerous other catalysts for carbonyl removal are exemplified.
Patent GB-1043183-A (GB)
Title: Weld flux composition
IPC: B23K35/02
Filed: 1963-03-18
Abstract: 1,043,183. Welding by pressure. L. L. LOCKSHIN. March 18, 1963, No. 5263/66. Divided out of 1,043,181. Heading B3R. The subject matter of this Specification is substantially the same as that described in the parent Specification but the claims are concerned with an annular fluxing disc for use in stud welding having a composition comprising a mixture of a finely divided mixing material in the proportion of at least 50% by weight of the mixture, the fluxing material including at least one of silver, brass, copper, iron, aluminium oxide or iron oxide, and a combustible organic carrier in the proportion of 50% or less by weight of the mixture.