baber/WOPTO huggingface dataset:
Patent GB-415748-A (GB)
Title: Improvements in and relating to production of maleic or phthalic anhydride
IPC: C07C51/48
Filed: 1933-01-27
Abstract: Maleic anhydride or phthalic anhydride is recovered from a gaseous mixture containing water vapour, inert gas and the anhydride obtained by catalytic oxidation of an organic substance such as benzene and naphthalene by condensing the anhydride in the presence of an inert, water-immiscible solvent therefor at a temperature below the boiling points of water and of the solvent, sufficient inert gas being present to retain the water vapour in the gaseous mixture.  Suitable solvents include liquid aliphatic and aromatic hydrocarbons, ethers, aromatic nitrohydrocarbons, halogenated aliphatic, aromatic and hydroaromatic hydrocarbons, e.g. benzene, toluene, solvent naphtha, petroleum ether, gasoline, lubricating oils, heavy naphtha, diphenyl, nitrobenzene, nitrotoluenes, diethylether, diphenyl oxide, chloroform, carbon tetrachloride, chlorobenzene, chloronaphthalene, naphthalene (which is liquid under the absorption conditions), and esters of carboxylic acids such as diethyl or dibutyl phthalate or maleate. In examples, a mixture of benzene and air is passed over a mixture of vanadium and molybdenum oxide and the resulting gas stream is passed through an absorption vessel containing a -chlornaphthalene or solvent naphtha and maleic anhydride is recovered from solution in the solvent.
Patent GB-1153673-A (GB)
Title: Improvements in or relating to Electrical Discharge Display Devices
Inventor: SCHAGEN PIETER
IPC: H01J17/49
Filed: 1967-01-18
Abstract: 1,153,673. Discharge apparatus. MULLARD Ltd. 26 Oct., 1967 [18 Jan., 1967], No. 2702/67. Heading H1D. An electrical display panel device comprises a two-dimensional array of glow-discharge cells, an individual " recessed " cathode K (i.e. one providing an exposed emissive surface surrounded by a wall which may be insulating or conductive) for each cell, an element P of photo-conductive material coupled externally to each of said cathodes so as to be in series therewith, a common anode A for all the cells through which anode an image composed of glow discharges can be viewed, and a common negative supply electrode E for all the cells which electrode is connected to all the cathodes through said elements of photo-conductive material and allows passage of input radiation to each of said elements. In the device shown, the cathodes K are provided by the end surfaces of metal plugs Kp inserted in apertures in a glass plate G, but may be formed by emissive material on " contact" rings. An output window Wo is provided, and the layer P is of sintered CdSe. An input window may also be provided. The layer P passes to each cell a discharge current related to the intensity of the input radiation and provides a storage facility if the input is scanned. The space between the window Wo and the plate G, which is filled with a NeA mixture at a pressure of 300 Torr, may be maintained by inserting a cellular insulating matrix or a metal grid forming the anode, or by forming the window or plate with projections, e.g. a network of ridges with conductive coatings forming the anode. Alternatively, natural or artificially provided roughness of the surface may be sufficient for them to be sandwiched together. The plate G may be opaque or partially opaque to prevent or control optical feedback, and an opaque or partially opaque layer may be provided between the plate G and the layer P to prevent feedback to P or to provide variable feedback by " flooding." This layer may be highly resistive. These and other modifications, described with reference to Figs. 4, 5A and 5B, and 6A-6M (not shown), include replacing the layer P by a photo-conductive plug in each cell or islands each surrounded by a mesh of the electrode E, or the latter may be buried in the layer P or may be printed on the plate G or on ridges on the plate, or may be recessed in the plate. Cathode glow may be augmented by positive column glow by providing deep cathode recesses or anode recesses which may be formed in a matrix separated from the plate G by a gap. An anode coating may extend into these recesses. A phosphor may be provided on anode or cathode. The device may be used as an image converter panel activated by X-rays or light, or may form the output screen of a display device in which scanning is effected by an electron beam, a laser, a solid state cross-bar matrix, or the glow discharge addressing device described in Specification 1,153,674.
Patent GB-760040-A (GB)
Title: Improvements in or relating to method for preparing alkenyl substituted phenolic compounds
Filed: 1954-01-29
Abstract: A mixture of alkenylphenols containing at least 50 per cent by weight of monoalkenylphenols is prepared by reacting together a phenolic compound having at least one replaceable nuclear hydrogen atom and an acyclic conjugated diene in an amount such that there is at least a mol. of diene for each mol. of phenolic compound, and in the presence of a Friedel-Crafts catalyst comprising acids which are proton donors and have a room temperature acidity function (Ho), as determined by the use of Hammett indicators, of -4.0 to -7.5.  For the determination of Ho values, see Hammett, Deyrup and Paul, J.A.C.S., 54, 2721-38 (1932), and Hammett and Paul, J.A.C.S., 56, 827-9 (1934). Sulphuric acid of 65 to 75 per cent concentration, mixtures of phosphoric and sulphuric acids, mixtures of phosphoric and polyphosphoric acids, and hydrofluoric acid have Ho values between -4.0 and -7.5.  The product is mainly a mixture of monoalkenyl phenols with minor amounts of polyphenols, ethers, polyalkyphenols, and polymers.  Specified phenols are phenol, cresols, catechol, resorcinol, butyl resorcinol pyrogallol, phloroglucinol, tert - butyl - catechol, beta - naphthol, nitro-phenols, aminophenols, halophenols, polyhalophenols, halogen substituted nitrophenols, guaiacol, 3:5- and 2:3-dimethoxyphenols, bis - (4 - hydroxyphenyl) - 2:2 - propane, 4:41 - dihydroxybenzophenone, bis - (4-hydr oxyphenyl) - 1 - ethane, and bis - (4- hydroxy - 2-methylphenyl) - 2:2 - propane.  In the case of polynuclear phenols one alkenyl radical is attached to each phenolic nucleus.  Specified acyclic conjugated dienes are butadiene-1:3, 2 - methyl - butadiene - 1:3, piperylene, 2:3 - dimethyl - butadiene - 1:3, 2 - or 4-methyl - pentadiene - 1:3, hexadiene - 1:3 or - 2:4, 2-neopentenyl-butadiene-1:3, 2-chloro-or bromo- or -iodo-butadiene-1:3, 2-chloro-or bromo- or iodo-3-methyl-butadiene-1:3, and 1-bromo- or -fluoro-2-methyl-butadiene-1:3.  Preferred reactants are monohydric phenols and dienes free of tertiary double bonds (i.e. a double bond attached to a carbon atom which is bonded to 3 carbon atoms).  The amount of catalyst used is preferably between about 5 and 50 per cent by weight of the phenol.  An inert solvent such as hexane, heptane, toluene or xylene may be used in the reaction which is effected by mixing the reactants for 4 to 16 hours at the desired temperature, then removing the catalyst and recovering the products by fractional distillation.  The reaction may also be carried out at sub- or super-atmospheric pressures. The products are used in the preparation of resins and polymers. In examples, phenol and butadiene-1:3 are reacted using various catalysts and conditions as described above to give products which are mainly ortho- and parabutenylphenol.
Patent GB-848728-A (GB)
Title: Vehicles with transferable freight bodies
IPC: B61D3/20
Filed: 1958-01-28
Abstract: 848,728. Transferring freight containers to and from vehicles. FLEXI-VAN Inc. Jan. 28, 1958 [Jan. 31, 1957], No. 2831/58. Class 78 (4). To transfer a freight container 40 (Fig. 1) from a road wheel chassis 80 to a rail vehicle 10 the container is first slid from the road wheel chassis on to a frame 34 carried by a turntable on the rail vehicle and then turned into alignment with the rail vehicle. The container 40 may be slid from the chassis of the road vehicle by a pinion carried on the chassis and meshing with a rack on the base of the container. Alternatively as an the construction illustrated, the container is pushed rearwardly by a tractor (not shown) from a chassis 80 forming the rear wheels of the composite road vehicle, on to the turntable. The container is supported by its longitudinal channel members 36 from channel members 82 on the road wheel chassis 80 and from rollers 42 on channel members 34 on the turntable 12. Latches 104 holding the road wheel chassis 80 to the rail vehicle and latches 58 locking the turntable in the transfer position can be released manually. Securing vehicles on carrier vehicles.-When the container 40 is swung into alignment with the rail vehicle its kingpin pushes aside one of two locking sectors 150 biased by springs 154 and released by handles 158 when the trailer is to be unloaded. Locking sectors 150 are mounted on a carriage 120 which can be moved by a lead screw 134 to suit the length of the container. The container is also locked to the turntable by manually released catches 58 which engage apertures in the side members 36 of the trailer which may alternatively be engaged by manually released catches 84 on the road wheel chassis 80. Guiding the freight container into position.- The longitudinal members 36 of the container 40 are flared to guide them on to the channels 34 on the turntable 12 and the channels 34 curve downwardly at their ends to facilitate engagement. As the container is turned into alignment with the rail vehicle its rear end engages a curved ramp 148 and the kingpin at its forward end engages a curved ramp 146 to guide it into parallelism with the bed of the rail track.
Patent GB-155137-A (GB)
Title: Improvements in water injectors
IPC: F04F5/46
Filed: 1920-01-30
Abstract: 155,137. Cauthery, J., and Banks, J. W. Jan. 30, 1920. Conveyer apparatus, injector. - Relates to water injectors for use with waste heat economisers and comprises means to prevent eddies and give a clear passage to the cold water. The usual nozzle b, Fig. 1, is provided with an additional conical member g fitting close above it formed in one with a removable cover peak k, and forming a continuation of the nozzle leading to the inlet d from the pump. Screws o enable the cone g to be firmly seated on the nozzle b. In a modified form the additional member g, Fig. 3, is made to act with a feed inlet q from the pump formed on one side of the casing, by being curved in form and having a screw r in the removable cover to adjust the seating. In a further modification, the nozzle may be formed in one with the conical part g so as to be removable therewith.
Patent GB-1082311-A (GB)
Title: Improvements in or relating to multi-spindle automatic lathes
Inventor: SMITH DONALD RAYMOND
IPC: B23Q39/04
Filed: 1964-01-23
Abstract: 1,082,311. Multi-spindle automatic lathes. ALFRED HERBERT Ltd. Jan. 22, 1965 [Jan. 23, 1964], No. 2915/64. Heading B3T. A multi-spindle automatic lathe comprises rotary work spindles 1-6 arranged around a shaft 7, and chucks 9, which are indexed, and moved axially, by a chuck carrier 10, to align the chucks with the spindles 1-6. All of the spindles except number 1 are driven by an electric motor through shaft 7 and a gear drive 8, and number 1 is used for loading and unloading the work. Carrier 10 is moved vertically on a column 18 between an upper position in which the chucks are disengaged from the spindles, and a lower position in which the chucks are driven by the spindles and disengaged from the carrier. The carrier is indexed in its upper position by a pinion 23 which cooperates with teeth 22 on the carrier, the pinion being rotated by a fluid motor 25 through a worm and wheel 33, 34. Carrier 10 is raised by applying oil pressure underneath a lifting ring 16, oil being also supplied between column 18, and the carrier, for lubrication purposes. Swarf is collected in an annular channel 28 and is prevented from entering housing 17, which contains compressed air, by flanges 26, 27 on carrier 10. A cam 35 and a stop 36 are keyed for rotation with indexing shaft 24, the stop being engageable with a plunger 39 so that the chucks are aligned with the spindles. Plunger 39 is urged away from stop 36 by a spring 42 and is engaged with the stop by a fluid-pressure piston 41. Cam 35 engages a lever 47 which actuates a fluid-control valve 49. Each chuck is clamped to a spindle after indexing by a fluid-actuated piston. In operation, motor 25 is actuated to move the clamping pistons so that the chucks are released from the spindles. Pressure fluid is supplied to ring 16 and the chucks are moved vertically, Fig. 1 (not shown). Shaft 24 is rotated, and fluid is supplied to plunger 39, which then moves inwardly against spring 42. Cam 35 actuates valve 49 to slow down motor 25, and stop 36 engages plunger 39 so that the chucks have then been indexed until they are coaxial with the spindles, whereupon fluid from ring 16 is exhausted. The chucks move on to the spindles and are clamped in the new position. The lathe may have horizontal spindles.
Patent GB-759016-A (GB)
Title: Improvements in or relating to printing presses
IPC: B41F3/80
Filed: 1953-06-03
Abstract: 759,016. Printing - machines. HOLMES, A. H., HOLMES, F., and HOLMES, A. L. May 3, 1954 [June 3, 1953], No. 2971/53. Class 100 (2). Cylinder machines.- In printing pressses of the type having a type-bed and a rotary impression cylinder adapted to reciprocate in opposite directions in a vertical plane, locking mechanism is provided to hold the cylinder positively against rotation upon reaching its uppermost position and also during its down-strike, comprising a resiliently mounted latch or bolt rotating with the cylinder and adapted to co-operate with a rigid locking member which reciprocates with but does not rotate relatively to the cylinder. The cylinder 5, Figs. 1 and 2, reciprocates vertically along a frame 1, being carried on a carriage 3. A member 11 secured to the cylinder shaft 7 is associated with the usual brake mechanism (not shown) for assisting rotation of the cylinder. The member 11 carries a stop member 25 which abuts an adjustable stop 27 secured to the frame 1 to stop the rotation of the cylinder at the end of its up-stroke, which is the printing stroke. The member 11 also carries a housing 13 in which is mounted a spring-pressed plunger 15. As the cylinder approaches its uppermost position, the plunger 15 rides along an inclined surface of a camplate 19 secured to the cylinder bearing block 9 fixed to the carriage 3. The plunger is moved inwards by said surface which terminates in a radial shoulder, and when the plunger reaches this, it moves out beyond it and so prevents reverse rotation of the cylinder.
Patent GB-661758-A (GB)
Title: Manufacture of vat dyestuffs
IPC: C09B5/44
Filed: 1949-02-03
Abstract: 2 - Diphenyl or b  - naphthyl - 4 - chloro - 6 : 7 - phthaloyl-quinazolines are made by heating with phosphorus pentachloride in nitrobenzene 2-(41-phenyl) benzoylamino or (b -naphthoyl) amino-3-cyananthraquinone according to the process of Specification 642,129.ALSO:4 - Halogen - 6,7 - phthaloylquinazolines which contain in 2-position an aryl residue containing at least two aromatic six-membered rings are heated with 4 - aminoanthraquinone - 2 : 1(N) - acridones.  Examples describe the heating in phenol of 4-aminoanthraquinone-2 : 1(N)-acridone with (1) 2-diphenyl-4-chloro-6,7-phthaloyl-quinazoline, and (2) 2-(21-naphthyl)-4-chloro-6,7-phthaloyl quinazoline.  The product dyes cotton yellow-green shades, and a dyeing example is given.  Other aryl residues specified for the 2-position of the quinazoline are pyrene, chrysene, fluoroanthene, and phenanthrene. Specifications 476,599 and 642,129, [Group IV (b)], are referred to.
Patent GB-897778-A (GB)
Title: Hydraulic lift systems in particular for tractor mounted implements
IPC: A01B63/10
Filed: 1960-01-28
Abstract: 897,778. Fluid-pressure servomotor-control systems. D.B.A., S.A. Jan. 28, 1960 [Jan. 28, 1959], No. 3134/60. Class 135. [Also in Group XXXI] Means for controlling an hydraulic jack 42 suitable for application to lift systems for agricultural implements on tractors comprises a valve member 11 actuated by a lever 13 connected to a follow-up lever 15 and controlling communication between a pressure supply passage 7 and a passage 17 leading to the jack, a check-valve 44 for maintaining the jack under pressure when the valve member 11 is closed, and an exhaust valve member 50 operated by a lever 48 when the valve member 11 is moved beyond its closed position and having a projection for forcibly opening the check-valve 44. A restricted passage 18 interconnects the passages 7, 17. A valve 24 is normally closed by admission of inlet pressure through a restricted passage 30 to a chamber 32 but opens to unload the pump 1 when the chamber is vented to a passage 30 by movement of the valve member 11 beyond its closed position. A plunger acted upon by the control lever 13 or by a separate lever may be provided whereby an operator is enabled to apply pressure to the valve 24 when open to increase the pressure applied to the jack to provide an " anti-skid " device. The increase of pressure so obtained may be limited by a stop for the lever. A relief valve 54 limits the maximum pressure in the system. Specification 897,779 is referred to.
Patent GB-995716-A (GB)
Title: Improvements in carburettors for internal combustion engines, comprising an auxiliary device for cold starting and cold running
IPC: F02M1/10
Filed: 1964-01-24
Abstract: 995,716. Spray carburetters. SOC. INDUSTRIELLE DE BREVETS ET D'ETUDES S.I.B.E. Jan. 24, 1964 [Feb. 5, 1963], No. 3212/64. Addition to 963,126. Heading F1B. In a modification of the automatic choke control device of the parent Specification, the lever 14 co-operating with the free end 11 a of the bimetallic element is free to pivot anticlockwise, Fig. 3, when the end 11 a moves into contact with the nose 17 upon rising engine temperature so that there is no resistance to the clockwise movement of the end 11 a. Return of the end 11 a when the engine temperature falls, Fig. 4, is resisted by contact thereof with the nose 17 of the lever 14 which is loaded by a spring-loaded push-rod 19. The lever 14 is urged against the push rod 19 either under its own weight or by a light spring.
Patent GB-228016-A (GB)
Title: Improvements in or relating to ingot moulds
IPC: B22D7/10
Filed: 1924-02-08
Abstract: 228,016. Naylor, G. W., Naylor, J. F., and Naylor, W. Feb. 8, 1924. Moulds; casting processes. -A refractory lining b for an ingot mould rests in transverse slabs d supported from the top of the mould by Z-bars e. The space a is filled with cinders, coke &c. In modifications the slabs, which may be of angular section, rest on shoulders formed on the mould wall.
Patent GB-1116603-A (GB)
Title: Electric circuit breakers
Inventor: ATHERTON THOMAS GEOFFREY FENTO
IPC: H01H71/10
Filed: 1965-01-26
Abstract: 1,116,603. Automatic circuit breakers. DORMAN & SMITH Ltd. 10 Jan., 1966 [26 Jan., 1965], No. 3291/65. Heading H1N. A polyphase circuit breaker of the kind described in Specification 1,116,601, is assembled from a plurality of smaller circuit breakers coupled together by the device of Specification 1,116,604, generally in the manner described in Specification 1,116,602 but each of the small circuit breakers is modified by the provision of an internal conductor which links together the moving contacts of all poles and connects them to a single terminal 49, a single thermal and/or electromagnetic tripping mechanism being responsive to the total current flowing in said conductor to trip the smaller breaker and thus the whole polyphase circuit breaker.
Patent GB-754714-A (GB)
Title: Carboxyalkyl cellulose composition suitable for soaking, washing and cleaning
IPC: C08B11/12
Filed: 1954-02-04
Abstract: Water-soluble alkali metal or ammonium salts of a carboxyalkyl cellulose having a degree of substitution of 0.4-0.6, a fibre content of at most 4 per cent and such a constitution that a 1 per cent by weight aqueous solution thereof buffered by 2.5 per cent by weight anhydrous sodium carbonate and 2.5 per cent by weight sodium bicarbonate has a viscosity of 10-25 centiposes, are obtained by etherifying cellulose in suspension in an inert organic liquid, e.g. an inert alcohol, ketone or hydrocarbon.  In an example, cellulose suspended in kerosene is etherified with monochloroacetic acid in the presence of caustic soda to yield the sodium salt of carboxymethyl cellulose.  Salts of carboxyethyl- and carboxypropyl-cellulose are also mentioned. The product is for use, together with one or more detergents, in a washing composition.  Specifications 623,276 and 710,777 are referred to.ALSO:A cleansing, washing or soaking composition comprises one or more water-soluble alkali metal or ammonium salts of a carboxyalkyl cellulose and one or more other detergents.  The salt of carboxyalkyl cellulose, e.g. carboxymethyl-, carboxyethyl- or carboxypropyl-cellulose, is prepared by etherifying cellulose in suspension in an inert organic liquid and has a degree of substitution of 0.4-0.6, a fibre content of at most 4 per cent and such a constitution that a 1 per cent by weight aqueous solution thereof buffered by 2.5 per cent by weight anhydrous sodium carbonate and 2.5 per cent by weight sodium bicarbonate has a viscosity of 10-25 centipoises.  Specifications 623.276 [Group IV(a) and 710,777 are referred to.
Patent GB-295266-A (GB)
Title: Improvements in or relating to the manufacture of safety fuses for use in mining or blasting
IPC: C06C5/08
Filed: 1927-02-07
Abstract: 295,266. Fritzsche, J. Feb. 7, 1927. Blasting fuzes.-Consists in the provision, in a machine for making mining or blasting fuzes, of the kind comprising a core of powder contained in a wrapping formed from a strip of paper, &c., of means for ensuring uniformity in the charge of powder by controlling the flow of powder as it is fed into the wrapping, in such a manner as to prevent undue crowding of the particles. Fig. 1 shows part of a machine for the purpose, in which powder is contained in a flat-bottomed receptacle 1 through which a strip 3 of paper is drawn. The strip is guided into the vessel 1 by a suitable nipple (not shown) and assumes a trough-like shape as it passes through the powder. As it emerges, the strip is formed by a nozzle 2 into a tube with overlapping edges, and near the point of emergence a member 7 is adjustably fixed, with its end 8, shaped like a scoop, projecting into the paper trough. The " ejector " 7 regulates the quantity of powder passing out of the container with the paper wrapping. Fig. 3 shows another construction in which the paper strip 4, instead of passing through the powder container 1, moves below it, the powder falling on to it at a point between the shaping members 14, 2. Excess of powder is directed by a fixed scoop 7, and falls into a vessel 17. Fig. 3 also shows spinning mechanism for covering the filled tube with jute threads in the usual manner. A further alternative is shown in Fig. 5. In this construction, the paper strip 3 retains a troughshaped formation as it passes through the flatbottomed container 1, and a stirrer is provided to prevent crowding of the particles at the lower end of the receptacle 1. Escape of superfluous powder from within the strip is thus facilitated. The stirrer comprises arms 26 carried by a powerdriven rotating part 24 within which the stationary guide 14 for the strip is located. A worm 29 mav be rotated within the passage 28 through which the powder passes to the receptacle 1. The nozzle 2 through which the charged wrapper emerges is flared as shown. The wrapper filled with powder may be enclosed by a sheath of paper &c., to close the longitudinal slot, this sheath being applied simultaneously with the winding of the threads. Fig. 11 shows still another device for displacing excess powder as the core is being formed, an adjustable needleshaped rod 140 being in this case so placed that the wrapper 4 passes round it during its passage through the powder receptacle. More than one strip of paper may be used in the formation of the first wrapper for the core. The strip may be waterproofed or otherwise impregnated, and may be formed of the substance known under the registered Trade Mark " Cellophane."