baber/WOPTO huggingface dataset:
Patent GB-591149-A (GB)
Title: Improvements in or relating to the production of organo-silicon compounds by the grignard reaction
IPC: C07F7/08
Filed: 1944-11-30
Abstract: Compounds of the formula RxSi(OR1)4-x where R and R1 are the same or different alkyl, aryl or aralkyl groups, and hydrolysis products thereof, are prepared by reacting the corresponding Grignard reagent with a tetra-organo silicate in the presence of a solvent therefor, the amount of solvent present at the end of the reaction being so adjusted that the silicon compound and the resulting magnesium compound formed in the reaction are dispersed in a liquid phase.  The liquid reaction product is hydrolyzed and resolved into two immiscible phases by means of a dilute aqueous mineral acid and the organo-silicon compound is recovered from the organic phase.  In a particular form of the invention the organic halide used for forming the Grignard reagent may be used in such excess as to act as the solvent medium for the reaction.  In example (1) magnesium turnings are stirred into a large excess of dry ether with a portion of p-tolyl bromide, and tetra-ethoxy silicane is added followed by the remainder of the p-tolyl bromide which is added dropwise.  The homogeneous product is hydrolyzed by ice and p  sulphuric acid and di-p-tolyl silicanol and dehydration and polymerization products thereof are recovered from the ether layer which separates.  In example (2) ethyl bromide is slowly added to a mixture of magnesium filings, tetra-ethoxy silicane and dry ether seeded with a small quantity of Grignard reagent, and the product is hydrolyzed and the silicanol separated from the ether layer.  In example (3) magnesium and an excess of ethyl bromide are added gradually to a mixture of tetra-ethoxy silicane.  In example (4), bromobenzene in excess, tetra-ethoxy silicane and a portion of the magnesium required are mixed and the reaction initiated by adding a trace of a Grignard reagent, after which the remainder of the magnesium is gradually added.  The product is hydrolyzed and a brown oil which can be converted to a silicone is then separated from the bromobenzene phase.  In example (5) monophenyl tri-ethoxy silicane is obtained from an excess of chlorobenzene, tetra-ethoxy silicane and magnesium. In example (6), ethyl bromide is slowly added to a mixture of magnesium, dry ether and tetra-ethoxy silicane, and the product is hydrolyzed by adding aqueous sulphuric acid.  A liquid ethyl silicone is separated from the ethereal layer.
Patent GB-461980-A (GB)
Title: Improvements in or relating to rail motor vehicles
IPC: B61F5/38
Filed: 1935-08-26
Abstract: 461,980. Interconnecting axle-trucks of rail vehicles for radiating. DEVLIN, S. R. Aug. 26, 1935, No. 23888. [Class 79 (v)] A rail motor vehicle is supported solely on a single-axle truck e and a multi-axle truck b, the trucks being interconnected by means of a longitudinal shaft k mounted on the underframe and provided with lever arms l, j respectively connected by links m, i to the trucks e, b. " Lost-motion " connections may be provided to allow for variations in the distance between the trucks. The invention may be applied to articulated vehicles in which two cars are provided with three bogies, three cars with four bogies, and so on.
Patent GB-1457852-A (GB)
Title: Dye laser having non-colinear optical pumping means
IPC: H01S3/02
Filed: 1974-05-29
Abstract: 1457852 Dye lasers COHERENT RADIATION 29 May 1974 [30 May 1973] 23894/74 Heading HIC In an optically pumped dye laser having a resonator 12, 14, 16 defining an optical path 18 for laser oscillations, the pumping radiation 26 intersects an unsupported flowing stream 20 of the laser dye. A plurality of different dyes may be used in sequence e.g. for changing the output wavelength of the laser. This is achieved by providing on one side of the pumping beam an input rotary plate (80) Fig. 7 (not shown) containing a plurality of dye input ports (82) any one of which may be aligned with the pumping beam. At the other side of the beam is positioned an output rotary plate (102) having a number of exit ports (104) equal to the number of input ports. The input and output rotary plates are ganged together so that dye received in an output port may be re-circulated by a respective pumping system (38-42) Fig. 3 (not shown) to its corresponding input port.
Patent GB-1434491-A (GB)
Title: Gas turbine engine
IPC: F01D11/00
Filed: 1974-05-30
Abstract: 1434491 Cooling gas turbine engines FORD MOTOR CO Ltd 30 May 1974 [7 June 1973] 23907/74 Headings F1G and F1T A stationary shroud 19 surrounding the tips of turbine rotor blades in a gas turbine engine is cooled by air supplied from a centrifugal compressor via tubes 25 to an annular chamber 22 and thence through passages 24, 27 defined between the shroud and a ring 23 welded thereto at 28. The passages 27 are electro-chemically etched in ring 23 and are 0À005 to 0À020 in deep, preferably 0À008 in. The air leaves passages 27 through further passages 31 and thence flows beneath resilient seal member 34 into the working gas stream. A modified seal member (44), Fig. 4 (not shown), includes an axially extending locating flange (52).
Patent GB-259941-A (GB)
Title: Improvements in mercury vapour rectifiers for large outputs
IPC: H01J13/48
Filed: 1926-09-28
Abstract: 259,941. Akt.-Ges. Brown, Boveri, et Cie. Oct. 17, 1925, [Convention date]. Low-pressure metallic-vapour apparatus.-An upwardly-flared nozzle d above the cathode k .conveys mercury vapour to a cooled upwardly-flared sheetmetal chimney s, which extends downwards from the anode plate and acts as a condensation space. Condensed mercury and dirt are deposited in a gutter r fitted with a pipe e, which is arranged so that mercury, free from dirt, passes thence to the cathode. The chimney may be cooled by a coil c or by a jacket.
Patent GB-1187326-A (GB)
Title: Roll with Vibration Damping Means
Inventor: GALLANT JAMES O
IPC: F16F15/16
Filed: 1968-05-21
Abstract: 1,187,326. Rollers; vibration dampers. MOUNT HOPE MACHINERY Ltd. 21 May, 1968, No. 24055/68. Headings F2S and F2U. Vibration of a heavy roller comprising a stationary hollow axle 10 carrying a rotatable sleeve 12 on fluid bearings 14 or, Fig. 3 (not shown), on roller bearings (76), is damped by a paddle 70 resiliently mounted in the hollow axle. As shown, the paddle is mounted by resilient rods 68 in blocks 64 mounted on a tension rod 56 which gives the roller an initial curvature prior to application of the load. The axle is partially filled with water or other lubricating fluid and the paddle acts to pump the fluid through the clearance between itself and the axle to dampen vibration of the roller. The paddle is tuned to a natural frequency equal to that of the roller. Again, Fig. 5 (not shown), the paddle is mounted on a tension bar 56 at its centre only, tuning masses being mounted at its end. The paddle may be formed as a laminate, e.g. in the manner of a leafspring, and vibrational energy of the roller absorbed additionally by interfacial friction between the discrete layers of the laminated paddle as it vibrates.
Patent GB-428044-A (GB)
Title: Improvements in and relating to vitamin concentrates
IPC: A61K31/525
Filed: 1933-08-31
Abstract: Vitamin B and G concentrates are obtained by plasmolyzing yeast by means of a volatile solvent for vitamins B and G, treating the resulting mass with an alcohol or ester to coagulate the protein and concentrating the liquid product after filtration.  The solid residue on the filter may be used for the preparation of ergosterol.  Fatty acid esters, diethylether, chloroform, diethylenedioxide or acetone may be used as the volatile solvent and methyl or ethyl alcohol or ethylacetate for coagulation of the protein.  The concentrates may be used for increasing the vitamin B and G contents of foods, tonics and drinks, e.g. the concentrates may be mixed with a starch conversion product containing maltose and dextrine, dried malt or wheat germ extract. In an example, ethyl acetate is used for plasmolyzing the yeast and protein is coagulated by means of alcohol.ALSO:The vitamin B and G content of foods is increased by means of a concentrate obtained by plasmolyzing yeast, coagulating protein material by means of alcohols or esters and concentrating the liquid product after filtration.  The concentrates may be added to a starch conversion product containing maltose and dextrine, dried malt or wheat germ extract.
Patent GB-360959-A (GB)
Title: Electric water heaters
IPC: F24H9/12
Filed: 1930-08-12
Abstract: 360,959. Supply and delivery arrangements for hot-water boilers. BERRY, H. H. and PAINTON, C. A., 85, Newman Street, Oxford Street, London. Aug. 12, 1930, No. 24171. [Class 64 (i).] In an electric water heater a rotary non-sliding valve directs the cold water supply either through inlet 6 to displace hot water through outlet 13 or through byepass 7 direct to the outlet, or both these courses at once giving a mixture of hot and cold water at the outlet. The valve consists of a rotatable sleeve within a cylindrical casing having an inlet 3 and outlets 6, 7, ports in the sleeve being brought selectively or simultaneously into register with the outlets by operation of the handle 9. Specification 329,210, [Class 64 (i), Heating liquids &c.], is referred to.
Patent GB-1103966-A (GB)
Title: Automatic door closer
IPC: E05F3/10
Filed: 1965-06-08
Abstract: 1,103,966. Fluid check door closers. DORKEN & MANKELL K.G. 8 June, 1965 [10 June, 1964], No. 24210/65. Heading E2M. In a fluid-check door closer of the type-which is inserted in a door and in which a piston 63 is moved in a cylinder to load a spring as the door is opened, the piston rod 48 has a longitudinal bore in its piston end in which runs a nozzle tube 84 mounted on the other, right hand, end of the cylinder. As the door is opened, the piston moves leftwardly and fluid from the left of the piston flows both past the piston and through a bore 52 in the piston rod, along tube 84 and bores 78, 85 and 77 into space 93. To allow for the varying volume of piston rod present in the cylinder, a compensating chamber is provided beyond the right hand end of the cylinder and supplies space 93 with extra fluid through a one way valve 81 and bore 77 as the door is opened. As the door closes, fluid is expelled from space 93 through bores 77, 85 and 78 into the space to the left of the piston, via nozzle tube 84, and also into the compensating chamber. An adjustment throttle screw 86 in bore 85 controls the closing speed. The volume of the compensating chamber adapts to that of the fluid enclosed by means of a flexible wall 72, thus preventing the induction of air into the system. Nozzle tube 84 is a close fit in a nozzle ring 69, but its diameter may be decreased at certain points to allow free flow of fluid between the tube at those points and nozzle ring 69 to remove checking at the corresponding positions of the door. A relief valve 88 between bore 77 and the compensating chamber prevents damage from excess pressure.
Patent GB-1430675-A (GB)
Title: Magnetic recording medium incorporating fine acicular iron-based particles
IPC: C09D5/23
Filed: 1973-05-21
Abstract: 1430675 Magnetic compositions MINNESOTA MINING & MFG CO 21 May 1973 [22 May 1972] 24227/73 Headings C3R C3B and C3P [Also in Division C7] A magnetic recording medium comprises a non-magnetizable support carrying a magnetizable layer comprising a non-magnetizable binder in which is dispersed fine acicular ferromagnetic particles (P) that: (1) comprise #75% wt. metal, at least a majority of which is Fe, any other metal forming #10% wt. of the metal being Co, Ni, or Cr; (2) have saturation magmetic moment #75 emu./g.; and (3) have average diameter and magnetization intensity falling on or below the curve of Fig. 1; sufficient particles (P) being included that the medium has remanent flux >1500, and has signal/noise ratio #6db better than that of a standard γ-Fe 2 -O 3  medium. The particles (P) may be introduced into the binder in pyrophoric form; they may contain B, having been produced by a solution-reduction using alkali metal borohydrides. The particles may also be made by thermally decomposing Fe carbonyl, and optionally other carbonyls; or heating Fe oxide partices in a reducing gas. The reduction may be performed in a magnetic field. The average diameter may be 450 . The particles may have a Cr-based outer layer formed by exposing the particles to a solution containing Cr 2 O 7  = or CrO 4  = ions under high-speed sheartype mixing. A shell of formula approximately M 0À85 Cr 2À15  O 4 , where M is the metal, is probably formed. The binder may be polyurethane, epoxy resin, or vinyl-chloride-based polymer. The binder and particles may be dispersed in dimethyl formamide and methyl ethyl ketone together with alumina particles and a fluorochemical surfactant. The particles (O) form approximately 44% volume of the non-volatiles. The composition is used to coat, e.g. a polyethylene terephthalate film, the coating being exposed while still wet to a 1900 oersted magnetic field to orient the particles. Specification 1,430,676 is referred to.
Patent GB-370800-A (GB)
Title: Improvements relating to plate springs
IPC: F16F1/18
Filed: 1931-08-28
Abstract: 370,800. Laminated springs. KRUPP AKT.-GES., F., Essen, Germany. Aug. 28, 1931, No. 24286. Convention date, Nov. 28, 1930. [Class 108 (iii).] The leaves of laminated springs are formed with one or more longitudinal channels or recesses in such a manner that the surface lamina subjected to tension lies closer to the neutral axis than the surface lamina subjected to compression while the base of each channel lies in or in close proximity to the neutral axis. Figs. 1 and 2 show cross sections through a leaf initially of rectangular form, but having recesses for channels on the compression side extending down to or near the neutral axis x-x whereby the maximum compressive skin stress is greater than the tensile skin stress, the two being in the ratio h<2>/h<1>. The tensile side of the leaf may be formed with slight projections corresponding to the channels, so as to prevent relative lateral movement of the leaves in a complete spring.
Patent GB-655590-A (GB)
Title: A process for stabilising halogen-containing organic compounds of high molecular weight
IPC: C08L63/00
Filed: 1948-09-15
Abstract: The invention of the parent Specification is modified by using as the stabilizing agent ethers of boiling-point above 300 DEG  C. made by reacting a halogen-containing epoxide, e.g. epichlorhydrin or a poly-epoxide with glycerol or with a (dihydroxydiaryl) p  alkane. Specified reaction products of di-epoxy-di-ethers and alkanes are 2,2-[4,41-bis-(2,3-epoxypropoxy)-di-phenyl] propane and 2,2-[4,41-bis-(2-hydroxy-3,4-epoxybutoxy)-diphenyl] propane. The poly-epoxides may be 1,2-epoxy-3,4-epoxy butane, 1,2-epoxy-4,5-epoxy-pentane, bis-(2,3-epoxy - 2 - methyl - propyl) - ether, bis - (2,3-epoxypropyl)-ether or bis-(1,3-epoxypropyl)-ether. The alkanes may be bisphenol or bis-(2,2-dihydroxy-dinaphthyl)-methane.  Ethers may also be prepared by (1) the reaction of bisphenol and 1,2-epoxy-3,4-epoxybutane; (2) the reaction of glycerol and epichlorohydrin in the presence of boron trifluoride and the subsequent dehydrohalogenation in the presence of dioxane and sodium aluminate.  The stabilizer may act as a plasticizer and may be incorporated in the halogen-containing compounds mixed with a plasticizer, e.g. di-octyl phthalate.ALSO:The invention of the parent Specification is modified by using as the stabilizing agent for halogenated fats, train oil or waxes, ethers of boiling-point above 300 DEG  C. made by reacting a halogen-containing epoxide, e.g. epichlorhydrin, or a poly-epoxide with glycerol or with a (dihydroxydiaryl) alkane.  Specified reaction products of di-epoxy-di-ethers and alkanes are 2,2 - [4,41 - bis - (2,3 - epoxypropoxy) - diphenyl]-propane and 2,2 - [4,41 - bis - (2 - hydroxy - 3,4 - epoxybutoxy) - diphenyl] - propane.  The polyepoxides may be 1,2-epoxy-3,4-epoxy butane, 1,2 - epoxy - 4,5 - epoxy - pentane, bis - (2,3 - epoxy - 2 - methyl - propyl) - ether, bis - (2,3 - epoxypropyl) - ether or bis - (1,3 - epoxypropyl) - ether. The alkanes may be bisphenol or bis-(2,21-dihydroxy-dinaphthyl)-methane.ALSO:The invention of the parent Specification is modified by using as the stabilizing agent for halogenated natural or synthetic rubber, ethers of boiling-point above 300 DEG  C. made by reacting a halogen-containing epoxide, e.g. epichlorhydrin, or a poly-epoxide with glycerol or with a (dihydroxydiaryl) alkane. Specified reaction products of di-epoxy-di-ethers and alkanes are 2,2 - [4,41 - bis - (2,3 - epoxypropoxy) - diphenyl]-propane and 2,2 - [4,41 - bis - (2 - hydroxy - 3,4-epoxybutoxy)-diphenyl]-propane.  The polyepoxides may be 1,2-epoxy-3,4-epoxy butane, 1,2 - epoxy - 4,5 - epoxy - pentane, bis - (2,3 - epoxy - 2 - methyl - propyl) - ether, bis - (2,3 - epoxypropyl) - ether or bis - (1,3-epoxypropyl) - ether.  The alkanes may be bisphenol or bis(2,21-dihydroxy-dinaphthyl)-methane.
Patent GB-1039654-A (GB)
Title: Improvements in and relating to securing metal linings to tanks, containers or the like
IPC: B29C65/48
Filed: 1962-06-25
Abstract: 1,039,654. Jointing tanks; welding by fusion. E. ARMSTRONG. Sept. 19, 1963 [June 25, 1962], No. 24324/62. Headings B3A, B3R and B3V. A method of securing a metal lining 2 in a tank &c. 1 comprises fixing, metal sheets 2 of the lining to the tank 1 by means of an adhesive 3, the adhesive being so applied that areas adjacent the edges of the sheets 2 which are to be joined by welding or brazing 4 are free of the adhesive. This may be an epoxy-thiokol resin, applied evenly as at 7, or in the form of a grid 3. A stainless steel lining may be secured to the de-scaled surface of a mild steel tank. A loose strip of stainless steel may be located between the tank and the overlapping or butting edges of the lining to be joined, as by argon-arc welding.
Patent GB-1428435-A (GB)
Title: Cloth-like laminate
IPC: D04H1/64
Filed: 1973-05-22
Abstract: 1428435 Tissue laminates BUCKEYE CELLULOSE CORP 22 May 1973 [22 May 1972] 24419/73 Heading B5N A laminate having cloth-like properties, particularly drape, comprises a central layer impregnated with 250-800% (based on the fibre weight) of soft non-migratory latex binder solids of glass transition temperature 10 to - 80 C. and tack test (as defined) of 2-40 lbs. and having bonded to each surface thereof a facing layer, all layers being of woven or non-woven material and each having a basic weight of 1-30 lbs./3000 ft.<SP>2</SP>. The laminate is made by impregnating the central layer with an aqueous preferably plasticizer-free emulsion containing 40-80% latex solids, laminating the facing layers thereon and thermally drying. Suitable manufacturing technqiues are specified. The layers may be tissue papers, or spunbonded, carded, air-laid, or water-laid polyolefin, polyamide and rayon webs, and may be creped; suitable materials (imprinted tissues and rayon papers) are described in USA Specifications 3,553,078; 3,320,117 and 3,301,746. The products may be reinforced by a scrim laid between the central tissue and at least one facing tissue or by two sets of orthogonal linear or sinusoidal parallel strands disposed one on each face of the central tissue; such reinforcements may be bonded to the central tissue only, the facing tissue being bonded to the central tissue in the interstices. Reinforcing scrims may bonded or, preferably, unbonded or weakly bonded at their cross-over points; weak bonds may be removed by mechanical post-treatment of the laminate (see below) or by leaching with water if a polyvinyl alcohol binder is used. Preferably scrims and strands are cotton multifilaments; scrims may be woven, laid, knitted or open-mesh spun bonded material and may also be of rayon or polyester. Suitable central impregnant materials are specified, acrylic polymers and ethylene-vinyl acetate copolymers being preferred. The impregnant may contain a surfactant. Specific properties may be imparted to the product by treating either one or more layers (before lamination) or the whole laminate with a water- and alcohol-repellant material, e.g. wax-extended fluorocarbon; dyes and antistatic agents may be similarly incorporated. Flame retardant properties are imparted by including a suitable agent in the central layer impregnant. The laminate may be mechanically strengthened or compacted by 1-30% by creping, embossing, working against a tensioned belt or button breaking; the compaction is preferably repetitive with intermediate relief. Specified uses.-Surgical drapes and gowns, clothing, towelling and tenting.
Patent GB-1018347-A (GB)
Title: Improvements in or relating to polybutadiene
IPC: C08F36/04
Filed: 1964-06-12
Abstract: A polybutadiene is produced by emulsion polymerization using a peroxide catalyst and incorporating in the emulsion a mercaptan modifier, a chelated ferrous ion-sodium formaldehyde sulphoxylate activator and a mononitrobenzene and then using in combination sodium hydrosulphite, sodium hydroxide and sodium nitrite to shortstop the polymerization. The polybutadiene produced has a highly orientable crystalline structure on intrinsic viscosity, as measured in benzene, between 1 and 4 and a Huggins k value between 0.35 and 0.40.
Patent GB-1472832-A (GB)
Title: Automatic transmission
IPC: F16H3/66
Filed: 1975-06-06
Abstract: 1472832 Change-speed gear BORG WARNER CORP 6 June 1975 [1 July 1974] 24493/75 Heading F2D Input clutches 18, 20 are disposed on either side of a planetary gear set 12, and an output gear 16 is disposed between the gear set and the clutch 18. Low ratio is established by engagement of the clutch 18 and application of a brake 24 acting on a ring gear 84 so that drive from the input shaft 30 is transmitted through a hollow shaft 34 to a sun 70 and thence to a planetary carrier 90 bearing the output gear 16. Engagement of the clutch 20 instead of clutch 18 causes the input drive to pass from a shaft 32 to a carrier 74 to establish second ratio, whilst release of the brake 24 and engagement of both clutches 18, 20 locks up the planetary set to provide a direct third ratio. Holding of the suns 70, 72 by a brake 22 and engagement of the clutch 20 establishes overdrive fourth ratio, and reverse is established by engagement of the clutch 18 and application of a brake 26 which holds the carrier 74. All of the brakes and clutches are operated by fluid pressure.
Patent GB-169174-A (GB)
Title: Pneumatic heel
IPC: A43B21/28
Filed: 1921-09-15
Abstract: 169,174. Borman, E. Sept. 15, 1920, [Convention date]. Heels.-In a resilient heel for shoes consisting of a rubber body 12 with a hermetically sealed air chamber 18 an'd having the lower part 14 bulged downwards, the upper side of the chamber is closed by a cap 16 which forms a heel seat for the shoe. The heel is secured by nails passing through inset washers 22. In a modification, the layer 16 is not hermetically sealed but is simply laid in an undercut groove in the part 12.
Patent GB-1204590-A (GB)
Title: Improvements in window regaulator crank handles for automotive vehicles
IPC: G05G1/08
Filed: 1968-05-23
Abstract: 1,204,590. Crank handles. REGIE NATIONALE DES USINES RENAULT, and AUTOMOBILES PEUGEOT. 23 May, 1968 [31 May, 1967], No. 24585/68. Heading B7E. A vehicle window operating mechanism crank handle comprises a base member 1, fitted with a splined connector 2, and a resilient cover 3 fixed to the base by a solid or hollow stud 7 and by fitting over a pivot pin 4 on which a knob 6 is force fitted. The knob is closed by a cup 5 and a nut used to retain the handle on the operating mechanism occupies a space 10. The cover may be injection moulded from plastics material or be made solid from a similarly resilient material. In the case of a solid cover, reinforcing members may be embedded therein and formed with a protruding lug which grips the base member 1.