baber/WOPTO huggingface dataset:
Patent GB-1017045-A (GB)
Title: Improvements in resonant-cavity magnetrons
IPC: H01J25/587
Filed: 1964-09-15
Abstract: 1,017,045. Magnetrons; cathode materials. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. Sept. 15, 1964 [Sept. 18, 1963], No. 37635/64. Heading H1D. A resonant-cavity magnetron comprising two coaxial, axially spaced substantially frustoconical pole shoes 4 each having an axial bore to accommodate the ends of a central cathode assembly has the surface of the bore of each pole shoe formed, at least in part, by a coating 10 of a high melting point metal having a thickness of at least three tenths of a millimetre. As shown, the magnetron includes a cathode consisting of a molybdenum body 5, 6 with a central body 7 of porous tungsten impregnated with barium aluminate, end rings 8 and the ends of body 5, 6 being coated by sintering with a zirconium layer 9, and anode vanes 2, copper members 3 forming end-space boundaries and a copper outer wall 1. The high melting point metal 10 resists sputtering in the event of arcing between iron pole shoes 4 and the cathode assembly and may be molybdenum, platinum or tungsten, the coating 10 being formed by the application of a foil by rolling or by the application of a layer by sintering or by Schoop's treatment or (Fig. 2, not shown) each pole shoe may have a metal ring soldered to it.
Patent GB-1468938-A (GB)
Title: Process for concentrating polymer compositions
IPC: B01D65/06
Filed: 1974-08-28
Abstract: 1468938 Concentrating polymer compositions AB COR INC 28 Aug 1974 [31 Aug 1973] 37659/74 Heading B1X [Also in Divsion C3] Process for concentrating a polymer-containing liquid composition comprises feeding the compostion to the feed zone of an ultrafiltration semipermeable membrane device comprising a feed zone and a permeate zone separated by a semipermeable membrane adapted to prevent the passage of the polymer therethrough while permitting the passage of the liquid, removing a liquid-rich fraction from the permeate zone, and removing a polymer-rich fraction from the feed zone, wherein, when the flux rate of the membrane falls below a desired value, the semipermeable membrane is contacted with a solvent for the polymer for a time sufficient to restore the flux rate to at least its desired value, the semi-permeable membrane being resistant to the solvent employed to contact the membrane. The composition may be an aqueous acrylic or vinyl chloride polymer latex and the solvent tetrahydrofuran.
Patent GB-1055147-A (GB)
Title: Production of ethylene oxide
Filed: 1963-09-25
Abstract: Ethylene oxide is produced by the partial oxidation of ethylene by means of gaseous oxygen in the presence of a silver-containing catalyst, which comprises operating with a concentation of oxygen in the range 1-10%, a concentration of ethylene of 1-30%, a concentration of carbon dioxide of 0.1-10%, a concentration of halogenated inhibitor of 0.0001-100 p.p.m., a concentration of ethane and/or ethane in the range of 0.001-40%, a reaction temperature of 150-400 DEG  C., a reactor pressure of 50-650 p.s.i.g., a flow rate of 50-1500 standard cu. ft./hr., a reaction zone average diameter of 0.5-2.0 inches and length of 5-40 ft., the conditions being controlled to give a selectivity of 60-80% and an ethylene oxide concentration in the exit gases of 0.3-5%. The percentages given, where appropriate, are percentages by volume.  The preferred inhibitor is ethylene dichloride.
Patent GB-920219-A (GB)
Title: Improvements in or relating to centrifugal pumps
Inventor: RICHTER KARL
IPC: F04D9/04
Filed: 1959-11-06
Abstract: 920,219. Centrifugal pumps. ZENTRALE ENTWICKLUNG UND KONSTRUKTION (ZEK) PUMPEN UND VERDICHTER VEB. Nov. 6, 1959, No. 37746/59. Class 110 (1). In the centrifugal pump shown, the main impeller 10 delivers to a delivery union 12 by way of a separation chamber 13. A priming impeller 1 draws liquid from the chamber 13 by way of a duct 17 and returns it to the chamber 13 by way of an annular ejector nozzle 11 and a volute 7 having an exit 8. The resultant suction created at the entry to the nozzle 11 removes any air or gas from the intake pipe 16 by way of a conduit 5 and also by way of bores 6 in the impeller 10. The air or gas separates from the liquid in the chamber 13 and leaves the pump through the delivery union 12. The centrifugal pump may be of multi-stage type.
Patent GB-1419959-A (GB)
Title: Propagation of attenuated rubella virus
IPC: A61K39/20
Filed: 1972-08-14
Abstract: 1419959 Rubella virus A CHAGNON 7 Nov 1973 [14 Aug 1972] 37820/72 Heading C6F The HPV-77 strain of rubella virus is serially passed in from 1 to 4 passages through fresh turkey embryo tissue culture, each passage comprising introduction of the virus, incubation, harvesting and recovering the virus, to provide a supply of virus having the same characteristics as the starting virus. The incubation(s) may last 3 days and the harvesting may take place from 1 to 3 days thereafter. The passages may take up to 14 days to complete.
Patent GB-813213-A (GB)
Title: Process for the preparation of emulsions of phosphatides in aqueous alcohol
IPC: A23J7/00
Filed: 1956-12-12
Abstract: An emulsion of a phosphatide in aqueous alcohol which also contains a carbohydrate, is made stable by adding a small amount of a neutral fat in the range 0.5 to 5 per cent by wt. of used phosphatide.  For examples, fat-free licithin (choline or colamine type) is mixed with 1 per cent of the fat extracted from crude lecithin, and the mixture is emulsified in water containing up to 25 per cent of alcohol and some dextrose; the mixture is heated to 80 DEG  C. with stirring. Other carbohydrates specified are maltose, saccharose, lactose and starch.  Phosphatides include esters of aliphatic acids of 16-26 C atoms with an alcohol to which a nitrogenous base, e.g. colamine or choline, is linked through a phosphoric acid residue.  A partially de-fatted lecithin may be used instead of separate additions of phosphatide and neutral fat, e.g. lecithin containing 2 per cent of fat.  The stable emulsions produced may be used in the preparation of cosmetics, chocolate and confectionery, or for treating hides.ALSO:An emulsion of a phosphatide in aqueous alcohol which also contains a carbohydrate, is made stable by incorporation of neutral fat in the range 0.5 to 5 per cent by wt. of phosphatide used.  For example, fat-free lecithin (choline colamine type) is mixed with 1 per cent of the fat extracted from crude lecithin, the mixture is emulsified in water containing alcohol and dextrose, and the preparation is heated to 80 DEG  C. with stirring. Other carbohydrates specified are maltose, saccharose, lactose and starch.  Phosphatides include esters of aliphatic acids of 16-26 C atoms with an alcohol to which a nitrogenous base, e.g. colamine or choline, is linked through a phosphoric acid residue.  A partially de-fatted lecithin may be used instead of separately added phosphatide and fat, e.g. lecithin containing 2 per cent of fat.  The emulsions may be used in the preparation of chocolate and confectionery.
Patent GB-1268971-A (GB)
Title: Improved rubber composition
IPC: C08K5/375
Filed: 1969-07-29
Abstract: 1,268,971. Phenol polysulphides. BRIDGESTONE TIRE K.K. 29 July, 1969 [30 July, 1968; 7 Nov., 1968; 30 May, 1969], No. 38050/69. Heading C2C. [Also in Division C3] Products containing polysulphide linkages are prepared by reacting sulphur monochloride with phenol, p-cresol, resorcinol, bisphenol A, hydroquinone, p-tert butyl phenol and industrial cresol.
Patent GB-307420-A (GB)
Title: Divisible rim for vehicle wheels
IPC: B60B25/20
Filed: 1928-12-24
Abstract: 307,420. Ferrabino, E. March 7, 1928, [Convention date]. Tyre attachments to rims.-A side flange 4 is detachably secured to the rim-base 2 by a series of radially-movable pins 5 which are normally held in the operative position (shown) by means of a wire ring 6 passing through the pins and intermediate fixed studs 7. The pins may be formed with notches 8 by which they are held in the operative position when forcibly moved inwards to clear the flange 4.
Patent GB-359798-A (GB)
Title: Improvements in or relating to cutlery and like blades
IPC: B26B3/02
Filed: 1930-12-18
Abstract: 359,798. Grinding knives. HIRST A. and OXLEY, G. H., Bellefield Works, Watery Lane, Sheffield. Dec. 18, 1930, No 38133. [Class 60.] A table-, carving-, or like knife blade is produced by grinding a flat surface 5 in one side of the blade, extending from one-third to one-half its width at a smaller angle than the normal blade surface. The surface 5 is preferably in the median plane of the blade. During grinding the blade is held in a holder shaped to fit the opposite blade surface, the holder being traversed across the axis of an abrasive wheel. For grinding the curved edge shown in Fig. 2, the holder may be spring-controlled and pivoted on a reciprocating slide, being moved laterally by a suitable former as the point end of the blade reaches the abrasive wheel.
Patent GB-1494762-A (GB)
Title: Tunnelling machines
IPC: E21D9/10
Filed: 1975-09-17
Abstract: 1494762 Tunnelling machines EICKHOFF MASCHINENFABRIK U EISENGIESSEREI mbH GEBR 17 Sept 1975 [5 Oct 1974] 38166/75 Heading E1F A tunnelling machine comprises a jib 8 having a part 8a mounted on a universally pivotable support arm 7 for pivotal movement about a horizontal axis 9, and a part 8b mounted on the part 8a for pivotal movement about the jib axis and carrying a rotary cutting drum 2. The transmission for rotating the cutting drums 2 includes a bevel gear pair 16, spur gears 17, 18, 19, bevel gear pair 20, 21, spur gears 23 and an epicyclic step-down transmission (not shown). A drive pinion 26 of an electric or hydraulic motor 27 drives via an intermediate gear 28, a gear ring 25 secured to the jib part 8b so as to rotate the jib part 8b in a bearing 24. The jib part 8b may be locked in a selected position by the engagement of a toothed segment 31 with the gear ring 25, the segment 31 being movable manually by means of an eccentric bolt 32.
Patent GB-1032996-A (GB)
Title: Improvements in or relating to the prevention of corrosion in water systems
IPC: F02B3/06
Filed: 1964-09-18
Abstract: A package for preventing corrosion in water systems comprises an anhydrous corrosion-inhibiting compound enclosed within a film of a watersoluble polyvinyl alcohol.  The corrosion inhibitor may be Na, K, or Li chromate, K or Li dichromate, or an alkali metal chlorophenate.  An alkaline buffer such as Na2CO3, K2CO3, NaHCO3 anhydrous Na metaborate, tetracorate or silicate, or an alkali metal polyphosphate may also be present to give a pH of 8.0.-9.5 when dissolved.  The weight ratio of corrosion inhibitor:buffer may be 1-4:1, and of corrosion inhibitor: film 100-500:1.  The polyvinyl alcohol may contain 5-15% residual acetate groups and be plasticized with glycerol, ethylene glycol, low molecular wieght polyethylene glycols, or ethanol acetamide or formamide.  Air may be enclosed to provide buoyancy.  The package may be tubular and of such size as to provide 100-5,000 ppm of corrosion inhibitor and 1-20 ppm of dissolved polyvinyl alcohol in the water. It can be used in the cooling systems of diesel engines, recirculating cooling towers, and air conditioning systems.ALSO:A package for preventing corrosion in water systems comprises an anhydrous corrosion-inhibiting compound enclosed within a film of a water-soluble polyvinyl alcohol.  The corrosion inhibitor may be Na, K, or Li chromate, K or Li dichromate, or an alkali metal chlorophenate. An alkaline buffer such as Na2CO3, K2CO3, NaHCO3, anhydrous Na metaborate, tetraborate or silicate, or an alkali metal polyphosphate may also be present to give a pH of 8.0-9.5 when dissolved.  The weight ratio of corrosion inhibitor: buffer may be 1-4:1, and of corrosion inhibitor: film 100-500:1.  The polyvinyl alcohol may contain 5-15% residual acetate groups and be plasticized with glycerol, ethylene glycol, low molecular weight polyethylene glycols, or ethanol acetamide or formamide. Air may be enclosed to provide buoyancy. The package may be tubular and of such size as to provide 100-5000 p.p.m. of corrosion inhibitor and 1-20 p.p.m. of dissolved polyvinyl alcohol in the water.  It can be used in the cooling systems of diesel engines, recirculating cooling towers, and air conditioning systems.
Patent GB-1467736-A (GB)
Title: Production of non-woven fabrics
IPC: D04H1/00
Filed: 1974-09-03
Abstract: 1467736 Non-woven fabric; re-using waste material H O SUNDHAUSS 3 Sept 1974 [4 Sept 1973] 38418/74 Headings DIN and D1R A method of manufacturing non-woven fabric from non - woven fabric waste containing a thermoplastic binder resin comprises cutting the waste to a particle size of ¥ to 1 inch, hammer milling the cut waste to a size less than ¥ inch, blending it with textile fibres the bulk of whose length is greater than ¥ inch and forming the blend into a non- woven web e.g. by wet laying or by a Rando Webber. The textile fibres are preferably, though not necessarily, of the same material as the waste. The method is indicated diagramatically in Fig. 1 and a suitable hammer mill 14 is illustrated in Fig. 2. In this hammer mill material passes through a screen 40 which is cooled by air jets 30. Suitable ranges of proportions of waste and new material are disclosed and further binder can be added if there is insufficient in the waste material to suitably bind the finished product. The following fiber materials are referred to: polyurethane, polyethylene, acrylics, polypropylene polyester, nylon rayon, wool, cotton or a blend of any of these fibers. Suitable binders referred to are:- butadiene acrylonitrile, carboxylated-styrene-butadiene, polyvinylchloride and polyurethane. Suitable antistatic agents added at the cutting and hammer milling stage (see Fig. 1) are: propionamides, sulphonates, sulphonated or sulphated esters, sulphonated or sulphated oils, ammonium sulfide ester compounds, surfactant aldehyde mixtures and phosphate esters. Suitable fillers referred to are ground polyurethane wood pulp, rubber and silica. The fixing bath 18, Fig. 1, may contain aluminium sulphate.
Patent GB-932465-A (GB)
Title: Improvements in dishwashing machines
IPC: A47L15/23
Filed: 1959-11-12
Abstract: 932,465. Dish-washing machines. HOBART MANUFACTURING CO. Nov. 12, 1959 [Nov. 13, 1958], No. 38422/59. Class 138 (1). When a dish-washing machine is not in use the electric supply leads 99, Fig. 7, for the drive motor 27 of a washing liquid pump are stored in a compartment between the washing tank 20 and the outer cabinet 15, as also are the hoses 70, 71 through which liquid is respectively supplied and drained from the tank 20. The electric lead 99 is passed through a tubular guide 105 and a coiled spring 101 to prevent kinking thereof, and the hoses 70, 71 are looped around a bracket 95 when they are fully withdrawn so that they do not kink. As illustrated in Fig. 7, the machine has separate racks 50, 60, 61, and 62, for plates, cups, and glasses, and a rotary spray arm 26. Means are described for circulating heated air for drying the dishes, and for sealing and latching the lid of the cabinet. Specifications 801,192, 932,466 and U.S.A. Specification 2,707,961 are referred to.
Patent GB-1055746-A (GB)
Title: A method of extracting soluble constituents from paste-like,pulpy or finely pulverulent substances
IPC: B01D11/02
Filed: 1963-09-30
Abstract: 1,055,746. Extracting from pulps. METALLGESELLSCHAFT A. G. Sept. 30, 1963 [Sept. 29, 1962], No. 38466/63. Heading B1Q. [Also in Division C2]. A pasty substance diluted with a little liquid is heated in storage vessel 1 from whence it passes into high intensity mixer 3 for treatment with a solution of extract drawn from centrifuge 15. A quantity from mixer 3 passes via overflow tanks 4 to centrifuge 8. The liquid extract is the final product while the solid product proceeds to mixer 9 for if required a further repetitions off the treatment. Pure solvent is continuously introduced into the mixer 17.
Patent GB-1482671-A (GB)
Title: Piston-type pumps
IPC: F04B19/22
Filed: 1974-09-03
Abstract: 1482671 Reciprocating pumps HOUDAILLE INDUSTRIES Inc 3 Sept 1974 [15 April 1974] 38494/74 Heading F1A The delivery of a piston pump 2, 3, e.g. for lubricant is adjustable by a control piston 20 in a chamber 18 communicating with the pump cylinder 2, the control piston stroke being set by an adjustable stop 25, and the control piston being biased by a spring 23, the loading of which is such that on the discharge stroke of pump piston 3, control piston 20 is moved against spring 23 to engage stop 25 before delivery takes place through outlet 6, which may have a check-valve 7. Opening of inlet port 4 is controlled by piston 3. In Figs. 2 and 3 (not shown), chamber 18 is formed in the plug 22, and spring 23 acts on piston 20 via a plunger (29), the spring and plunger being housed in the adjustable stop (25'). Piston 3 may be hydraulically or pneumatically actuated by spring- loaded piston 11, or may be mechanically actuated, e.g. by a swash-plate.
Patent GB-1014799-A (GB)
Title: Process for the moulding of polyethylene of high molecular weight and moulded articles obtained according to this process
IPC: B29B13/00
Filed: 1964-09-24
Abstract: 1,014,799. Moulding polyethylene powder SOLVAY & CIE. Sept. 24, 1964 [Sept. 24' 1963], No. 38960/64. Heading B5A. [Also in Division F4] High molecular weight (e.g. above 106) polyethylene powder is moulded by preheating it to a temperature above its crystalline melting point, to render it amorphous, and then hot pressing the heated powder at a temperature below said crystalline melting point. The powders may be preheated in a rotary kiln or in a fluidized bed.
Patent GB-847409-A (GB)
Title: Flaring tool
IPC: B21D41/02
Filed: 1957-12-16
Abstract: 847,409. Stamping. IMPERIAL BRASS MANUFACTURING CO. Dec. 16, 1957 [Dec. 17, 1956], No. 39010/57. Class 83 (4). A tool for flaring the end of a tube comprises a channelled base, a flaring cone, tube clamping means slidably associated with the channel in the base comprising a pair of blocks each having a plurality of different sized grooves in one side face and a second plurality of grooves in another side face each of the grooves in one block being complementary to the grooves in the other block to define tube receiving recesses, means for securing said blocks together at one end, the other end being free, means associated with one end of each block interconnecting each for pivotal movement relative to the other block in a plane perpendicular to the axes of the grooves in the blocks and for rotational movement about its axis when pivoted away from a parallel relationship with the other block and means for urging said blocks together to clamp a tube inserted in one of the recesses. The tool comprises a C-shaped base 10 on which is floatingly carried a yoke 11 the yoke being maintained in position by pins 23 and a spring- loaded ball 29. The inner wall of the base is undercut to form a channel 24 for receiving tube clamping means comprising a pair of blocks 15 and 16, each pivotally and rotatably connected to a clevis member 17 to enable the correct size of clamp to be selected. The clamping action is effected by a screw member 18. A stop-bar 10a extending across the channel 24 is used to gauge the correct position of the tube end in the clamping blocks and a stoppin 17b on the clevis 17 engages the bar 10a. For removing the clamping means from the tool the pin 17b is removed to allow the clevis to pass under the stop-bar 10a. The midportion of the yoke carries in screw-thread engagement a flaring cone 13. In operation, the clamping blocks are adjusted to position the correct tube-receiving groove directly below the stop-bar 10a and the tube 14 is passed through the groove until it abuts the bar. The clamping means and the tube are now moved into alignment with the flaring cone and the clamping means tightened by the screw member 18. The flaring operation is effected by rotating the handle 28 the floating yoke ensuring proper alignment between the cone and the tube to produce a concentric flare.
Patent GB-951262-A (GB)
Title: Method and means for pressure pouring and casting
IPC: B22D17/06
Filed: 1960-11-15
Abstract: 951,262. Casting-machines. GRIFFIN WHEEL CO. Nov. 15, 1960 [Nov. 15, 1959], No. 39229/60. Heading B3F. [Also in Division F4]  A pressure-pouring apparatus comprises a ladle rotatable about a horizontal axis. Pressure gas is supplied through a port 64 via a pipe passing through one of the trunnions 6. The refractory lining 10 is gas-permeable so that pressure against it is equalized. Circumferential and longitudinal channels may be provided in the radially outer surface of the lining to assist this equalization. The metal jacket of the pouring tube 14 has vents 36 through which gas passing through the permeable lining 10 into the lining 34 may escape to prevent it being entrained in the melt. 50 is a drain hole.
Patent GB-351502-A (GB)
Title: An improved building block or unit
IPC: E04B2/30
Filed: 1929-12-27
Abstract: 351,502. Cavity walls ; building blocks. DUNN, E. M., 210, Maryvale Road, Bournville, Birmingham. Dec. 27, 1929, No. 39556. [Classes 20 (iv) and 87 (i).] A building unit a for use in cavity walls has staggered projections b, c each equal in depth to half the depth of the block at opposite ends thereof and one face of the block is cut away (as at d) at each end for the full depth of the block and for a length equal to that of the projections b, c so that when two blocks are assembled end to end they form a vertical recess to receive one end of a locking tie f of the same depth as the blocks. The blocks may be of a depth of two, four, six or more rows of brickwork and the outer face of the block has grooves g of sufficient depth to receive pointing if desired. The ends of the ties may have dovetail, bulbous or other interlocking shapes. For double cavity walls a central wall of blocks cut away to their full depth on both sides may be tied to an outer and an inner wall of blocks formed as above.
Patent GB-1070656-A (GB)
Title: Improvements in or relating to frequency dividers
IPC: H03L7/16
Filed: 1964-09-30
Abstract: 1,070,656. Automatic frequency control systems. SIEMENS A.G. Sept. 30, 1964 [Sept. 30, 1963], No. 39766/64. Heading H3A. An oscillator O applies its oscillations over a fixed ratio frequency multiplier (not shown) to a phase detector Ph which compares the multiplied frequency with a reference frequency, the output of the phase detector Ph being fed over an LC low pass filter to a locking-in generator circuit F used for frequency sweeping the divider oscillator O until the desired subharmonic of the reference frequency is produced, the LC filter also feeding through an RC filter a frequency stabilizing circuit of the oscillator. The LC filter has a low cut-off frequency to suppress undesired harmonics of the oscillator, and its inductor L is shunted by one or a pair of oppositely poled rectifiers D to short circuit the inductor for high amplitude difference frequencies produced for any sudden change of oscillator frequency, liable to produce false frequency synchronizing. The RC filter resembles the inductive branches of a Wien bridge circuit and compensates phase shift due to the LC filter. The A.F.C. voltage is applied from the RC filter to the junction A of a pair of capacitive diodes D1, D2 connected in the oscillator circuit across a centre-tapped inductor, the diodes reverse bias and the frequency sweep output F being applied to the centre tap B. The frequency multiplier (e.g. by 10) may comprise a push-pull rectifier frequency doubler feeding through a double tuned band pass filter a transistor amplifier with collector circuit tuned to the fifth harmonic.