baber/WOPTO huggingface dataset:
Patent GB-1035418-A (GB)
Title: Guide roller assembly
IPC: F16C13/00
Filed: 1965-06-17
Abstract: 1,035,418. Frame rollers. GENERAL MOTORS CORPORATION. June 17, 1965 [June 24, 1964], No. 25623/65. Heading B8B. [Also in Division E2] A guide roller assembly comprises a roller of two annular parts 12, 14 of synthetic resin material, slidable in a C-shaped guide channel (indicated in broken lines), each having part spherical surfaces 32, 58 to engage the ball head 24 of a stud 10. Part 12 is held inside part 14 by means of three equally spaced retaining ribs 66 integral with part 14. An annular groove 56 in part 14 joins three equally spaced arcuate apertures 48 in the base of part 14. At these apertures 48, part 14 has only a thin bottom wall 52 and a thin ring 62 surrounding the stud. The rings have on their spherical inner surfaces small projections 60 to abut the ball head 24, causing the rings 62 to be deformed to axially load the ball head. The walls 52 each have a projection 54 to hold the roller firmly in the guide.
Patent GB-814676-A (GB)
Title: Essentially cis rubbery polyisoprene and method of producing same
IPC: C08F136/08
Filed: 1956-08-22
Abstract: Isoprene is polymerized to an essentially cis-1,4-polyisoprene in the presence of metallic lithium and in the substantial absence of elemental oxygen or oxygen-containing organic compounds. Elemental nitrogen and water should also preferably be absent. Liquid or vapour phase polymerization may be used at temperatures from 100 DEG  to 0 DEG  C. or lower; it is convenient to initiate the polymerization at 30-70 DEG  C. and then reduce the temperature and conduct the major proportion of polymerization at the lower temperature which may be from below the initiation temperature to -20 DEG  C.  Lower temperatures give products of higher molecular weight and better polymer properties.  The monomer is preferably at least 95 mol. per cent pure, other unsaturated compounds particularly being kept at a minimum and any inhibitor should be removed.  The catalyst is prepared by melting the metal under petroleum jelly, mineral oil or paraffin and agitating.  The dispersion may contain 35 per cent lithium of mean diameter 20 m . The surface of the metal may be kept clean during reactions by burnishing by mechanical abrasion with spheres of inert material moved by stirring or rotating means. Polymerization may be effected in glass bottles; the monomer is added in 10 per cent excess which excess is boiled off to drive out air and the bottle is sealed, it may be static or rotated on a wheel during the reaction.  When polymerization is complete the polymer is removed and washed to destroy catalyst.  Antioxidant, e.g. 3 per cent phenyl-beta-naphthylamine, is added, the polymer water washed again, sheeted out and dried in vacuo at 50 DEG  C.  The products are very similar to Hevea rubber and contain at least 80 per cent cis 1,4-structure, no more than 7 to 10 percent trans 1,4-structure, no more than 10 per cent 3,4-structure and no or very little 1,2-structure.  Examples give chemical and physical data of products obtained by polymerizations employing between 0.025 and 0.2 parts by weight lithium per 100 parts monomer and of tyres prepared from the product.  Specification 603,630, [Group XIII], is referred to.
Patent GB-755079-A (GB)
Title: Production of 1-ethynyl-2,6,6-trimethylcyclohex-1-ene
IPC: C07C1/20
Filed: 1954-09-03
Abstract: 1 - Ethynyl - 2,6,6 - trimethylcyclohex - 1 - ene is prepared by heating at reflux temperature a solution of 1 - ethynyl - 2,6,6 - trimethylcyclohexan-1-ol in an aromatic or aliphatic hydrocarbon solvent of boiling point between 120 DEG  C. and 250 DEG  C., in the presence of cupric sulphate.  Suitable solvents are xylene, trimethylbenzene, ethylbenzene, diethylbenzene, triethylbenzene, isopropylbenzene, propylbenzene, di-isopropylbenzene, nonane, decane, undecane and dodecane, and mixtures of any two or more of these solvents.  The amount of solvent is preferably sufficient to allow for the water formed to be distilled azeotropically with the solvent and to allow for the water to be removed from the distillate by a Stark-Dean trap or similar apparatus. Advantageously at least 5 and preferably 10 parts by volume of solvent for each part by weight of the cyclohexanol compound are used.  The cupric sulphate contains preferably at the most one molecule of water of crystallization but the pentahydrate may be used.  It is preferred to use about one part by weight of cupric sulphate (calculated as the monohydrate) for each five to twenty parts by weight of the cyclohexanol compound.  It is stated that either the alpha or the beta form of the cyclohexanol compound may be dehydrated, but that the alpha form dehydrates more readily. The reaction is advantageously performed in a nitrogen atmosphere and on its completion the cupric sulphate is removed by filtration or similar means and is preferably washed with additional solvent. The solvent is then removed by fractional distillation and the crude cyclohexene compound purified by distillation under reduced pressure.  Examples describe the dehydration of both the alpha and beta forms of the cyclohexanol compound, and the refractive indices of the products indicate that the end product in the later case is not entirely the desired cyclohexene compound but that some rearrangement has taken place.  The solvents used are xylene and a commercial naphtha distillate which is predominantly nonane and, in a comparative experiment, toluene, the cupric sulphate in each case being the monohydrate.
Patent GB-486382-A (GB)
Title: Improvements in antibalation layers for photographic films
IPC: G03C1/83
Filed: 1937-09-23
Abstract: Murexide is produced by the condensation of alloxan and uramil in alkaline solution.  Rubazonic acid is prepared by treating 1-phenyl-3-methyl-pyrazole-4 : 5-dione with hydroxylamine, reducing the oxime to the amine and condensing with 1-phenyl-3-methyl-pyrazole-4 : 5-dione.  The following dyes are similarly prepared: 2-(11 : 31-diketohydrindylidene)-1 : 3-diketohydrindamine, 1 : 3-diketohydrindylideneuranil, 1 : 3-diketo-2-salicylidene-hydrindamine, and 4-(11 : 31-diketohydrindylidene) -5-keto-1-phenyl-3-methyl-pyrazolamine.  The dyestuff components may also be condensed with gelatine in alkaline solution to give colouring matters.
Patent GB-784458-A (GB)
Title: Improvements in or relating to controlling devices in boiling pans, more particularly for boiling down sugar juices to crystallization
IPC: C13B25/06
Filed: 1955-09-09
Abstract: <PICT:0784458/III/1> <PICT:0784458/III/2> Evaporation in a boiling pan 1 such as is used for obtaining sugar crystals from juices is controlled by mounting in the central bottom space of the pan a vessel 3 made of heat-conductive material having inlet and discharge lines 4, 5 by means of which a constant stream of water is passed through the vessel, and by providing in these lines thermometers connected to a device 18 which graphically-records the difference in temperature of the inflowing and outflowing water.  The operator is able to deduce from the graph the circulation and the viscosity of the boiling mass, and the amount of crystals therein.  The vessel 3 is secured with brackets to the heating-coil 2 so that it is equidistantly spaced from the coil on all sides.  Inside vessel 3, the water flows up from tube 13 (Fig. 2), through an annular space 14 between walls 15 and 16; this arrangement being favourable for the rapid transmission of heat to the water from the boiling mass in the pan.  The waterfeed and discharge lines 4, 5 pass through a copper tube at the base of vessel 3, and this tube passes through the bottom of the boiling pan via a packing gland.  The water is fed to vessel 3, via line 7 and filter 8, from a floattank 6 outside the pan.  The water leaving vessel 3 flows via line 9 to a needle-valve 10, and is discharged into funnel 11.  The final adjustment of needle-valve 10 in order to obtain the desired flow of water is best effected at the moment of formation of crystals, either when introducing seed crystals or when the first crystals form spontaneously.  Periodic additions of fresh juice to the pan are made when the graph indicates that the state of crystallization is suitable.
Patent GB-322743-A (GB)
Title: Improvements in steam condensing plant
IPC: F28B1/02
Filed: 1928-09-10
Abstract: 322,743. Contraflo Engineering Co., Ltd., and Hillier, H. Sept. 10, 1928. Condenser systems.-In steam ejector apparatus in which two condensing chambers arranged in series are placed between two ejectors, the chambers are connected by one or more restricted passages designed to limit the amount of condensible gases which can pass from the chamber into which an ejector discharges into the chamber from which the succeeding ejector withdraws. Elastic fluid drawn through an inlet 41, Fig 1, by an ejector 18 passes through a compartment 3, Fig. 2, having tubes 7 through which condensate from a main condenser flows on its way to a second similar compartment 4. Any elastic fluid which is not condensed in the compartment 3 passes by small apertures 21 into an inner compartment 5 past tubes 14, through which cold water flows, to a second ejector 19 adapted to pass it on to the compartment whence incondensible gases pass out through a branch 23. Fluid condensed in the chamber 3 may be drained directly therefrom or pass into the chamber 5 and be drained with the liquid from that compartment through an outlet 24. A drain 25 serves the compartment 5. In a modification, part of the main condensate is led through a byepass 32, Fig. 4, directly to the intermediate compartment 5 and is there sprayed upon the elastic fluid coming from the first compartment 3 through a pipe 29. A valve 30 in the, pipe 29 controls the flow of the fluid to ensure that as much heat as possible is conserved in the compartment 3. An ejector.19 then forces the fluid from the chamber 5 through the last compartment 4. The invention may be applied to a condenser having three ejectors. Specification 129,775 is referred to.
Patent GB-705825-A (GB)
Title: Improvements in and relating to steel roof supports in pits
IPC: E21D17/082
Filed: 1952-10-16
Abstract: 705,825. Mine-roof supports. OESTERREICHISCH-ALPINE MONTANGES. Oct 16, 1952 [Oct. 17, 1951], No. 26002/52. Class 20 (2) Mine roof support beams comprise projections provided by a welded on plate 4 which supports a bracket 5 on which a roof support beam 2 is adapted to be slid forward into position. The plate 4 extends along only part of the beam. The beam 2 is supported on the bracket by wedges 9, 10. The bracket is released from the plate 4 by sliding it along the beam or by turning it clockwise relative to the beam. A modification is shown with box-section beams.
Patent GB-845316-A (GB)
Title: Movable workpiece carrier for forging or other presses of the vertical type
Inventor: LEWIS JOHN TREVOR
IPC: B21J13/08
Filed: 1957-08-17
Abstract: 845,316. Forging. LOEWY ENGINEERING CO. Ltd. Nov. 17, 1958 [Aug. 17, 1957], No. 26035/57. Class 83 (4). A vertical press, particularly a forging press, has a horizontally-movable work-transfer member 12 actuated by one or more hydraulic power units 14, 16 through a tow-bar 38 attached to the member 12 and detachable connected to each power unit by a coupling pin 44, Fig. 2, mounted on each unit and adapted to be inserted from below into one of a series of holes 42 in the tow-bar. The press has a work-loading station A, working station B and unloading station C, a workpiece being transferred between the stations on a movable table 12 or a trolley. The table is preferably in two parts which can be connected together, each part being coupled permanently or by a pin 40 to a tow-bar 38 whose holes 42 are engaged successively by the coupling-pin 44 whereby the table is moved in steps by one of the hydraulic units 14, 16. Each unit, Fig. 2, comprises two fixed hollow pistons 18, 20 passing into integral cylinders 24, 26 connected to a cross-head 28 carrying the coupling-pin 44 which is actuated hydraulically. Alternatively the unit may have fixed cylinders and moving pistons. Coverplates 60 are provided for the holes 42 to keep out scale.
Patent GB-1010994-A (GB)
Title: Phenol from haloaromatics
IPC: C07C37/02
Filed: 1962-07-06
Abstract: Phenol is prepared by passing one or more compounds having the formula <FORM:1010994/C2/1> in which Y is a chlorine atom or a hydroxyl group, Z is a chlorine atom and n is 0, 1 or 2, in the vapour phase with water vapour at a temperature between 250 DEG  and 600 DEG  C. over a tricalcium phosphate catalyst, and recovering the phenol produced.  The vapour phase passed over the catalyst may also contain monochlorobenzene, and preferably consists of water vapour and the mixture of monochlorobenzene and one or more polychlorobenzenes produced by the oxychlorination of benzene in the first stage of the Raschig-phenol process.  The resulting product will contain, in addition to phenol, some chlorophenols, which can be recycled.
Patent GB-1085438-A (GB)
Title: Improvements in and relating to compressors or turbines
IPC: F01D17/16
Filed: 1965-06-21
Abstract: 1,085,438. Axial-flow compressors and turbines. BROWN BOVERI & CO. Ltd. June 21, 1965 [June 23, 1964], No. 26223/65. Headings F1C and F1T. In an axial-flow compressor or cold gas turbine in which the mechanism 4, 5 for adjusting the guide vanes 6 is arranged within a chamber 10 sealingly pressurized as by the compressor delivery air, cooling of at least some of the internal surface of the chamber by the external cooling effect of the air entering the compressor is reduced or avoided. This prevents condensation within the chamber of water vapour carried by the pressurized sealing air and thereby avoids corrosion of the vane adjusting mechanism. The reduced cooling of the internal surface of the chamber is effected by insulating at 16 the guide blade carrier 2 and separating it from an entry collar 17, by providing a pair of electrical heating rods (8), Figs. 1 and 2 (not shown), by guiding all the incoming pressurized sealing air along part of the internal surface, Fig. 3 (not shown), by insulating part of the internal surface, Fig. 4 (not shown), by insulating part of the external surface of the chamber, Fig. 5 (not shown), or by a combination of these methods.
Patent GB-384726-A (GB)
Title: Improvements in and relating to the removal of sodium sulphate from solutions contain
IPC: C01D5/02
Filed: 1931-09-19
Abstract: Sodium sulphate is removed from solutions containing sodium sulphate and sulphuric acid, for example spinning baths used in the manufacture of artificial silk, by adding strong sulphuric acid to the said solutions until they contain at least 30 per cent thereof and crystallizing out the sodium sulphate in the form of a hydrated acid sulphate.  The solutions may be subjected to preliminary concentration and may be mixed with strong sulphuric acid at one end of a cooled crystallizing apparatus, the acid sodium sulphate being separated from the liquid at the other end of the apparatus. According to an example a solution containing sulphuric acid, sodium sulphate, glucose, and zinc sulphate is concentrated, treated with strong sulphuric acid and cooled to 15 DEG  C.  According to the Provisional Specification strong sulphuric acid should be added until the concentration thereof in the solution is more than 25 per cent. Specification 298,639, [Class 1 (ii), Inorganic compounds, other than &c.], is referred to.
Patent GB-284016-A (GB)
Title: Improvements relating to brake mechanism for railway waggons
IPC: B61H9/00
Filed: 1926-10-21
Abstract: 284,016. Jubb, H. Oct. 21, 1926. Hand-actuation.-Brake mechanism for railway wagons comprises diagonally-opposed bellcrank levers 26 connected by pull rods 17, 24 to levers 18, 25 respectively on the opposite ends of a transverse shaft 20. The lever 18 forms one arm of a bell-crank, the other arm 22 of which is connected by a link 10 to the end of a weighted or spring-controlled lever 9 connected to the brake shaft 3 so that by operating either of the levers 26 the brakes may be applied. Each lever 26, Fig. 3, is associated with a semi-circular rack 29 and a pawl 31 pivoted at 32 to the lever is adapted to be turned by the stud 37 on a pivoted bar 28<B> into engagement with the rack upon gripping the lever 26. The pawls 31 are weighted at one end in order to release the brakes from either side of the vehicle when either lever 26 is further depressed. The pawls may be turned into engagement with the. rack by hand-pressure or by turning a lever on which the pawl is mounted.
Patent GB-403490-A (GB)
Title: Improvements relating to oil vapour stoves
IPC: F24C5/08
Filed: 1932-09-23
Abstract: 403,490. Oil heating-stoves. PARKINSON & COWAN (GAS METERS), Ltd., and MEADS, H. J., Bell Barn Road, Birmingham. Sept. 23, 1932, Nos. 26468 and 30790. [Class 126.] An oil-vapour cooking-stove of the kind comprising an oil container on which is mounted the burner, vaporizer, and supporting rods d for carrying a removable intensilsupporting grid or ring, is provided with a removable reflector a adapted to be pivotably mounted on one of the supporting rods, so that the stove may serve for heating purposes. In the construction shown, a bracket b extending through a hole in the reflector has pivotally mounted on it a clip c adapted to engage the horizontal top portion of one of the rods d, a tightening screw f securing the reflector in its adjusted position. A projection g on the clip limits the angular movement of the reflector by engaging the bracket b. Preferably a ring j formed of coiled nickel-chrome wire is placed over the burner to form a radiant. Specification 320,816, [Class 126, Stoves &c.], is referred to.
Patent GB-1352762-A (GB)
Title: Producing alkali metal silicate foamed products
IPC: C04B28/26
Filed: 1971-04-19
Abstract: 1352762 Silicate foam FIBERGLAS CANADA Ltd 19 April 1971 [7 April 1970] 76491/71 Heading C1A Hydrated alkali metal silicates are foamed by passing them from a confined space wherein the temperature is 100-400‹ C. and the pressure is less than 40,000 psi (but sufficient to inhibit water vapour formation) through a die to a region of relatively reduced pressure. The operation may be carried out in an extruder, preferably at 20-10,000 psi or an injection moulding machine at 8000-40,000 psi. The silicate may be treated either beforehand or in the machine to render it sparingly soluble. The hydrated silicate may be in the form of a finely divided solid.
Patent GB-378681-A (GB)
Title: Improvements in or relating to cathode ray tubes, especially for television purposes
IPC: H01J29/94
Filed: 1931-09-22
Abstract: 378,681. Cathode-ray tubes DOERING, U. W., 45, G³ntzelstrasse, Wilmersdorf, Berlin. Sept. 22, 1931, No. 26505. Convention date, Sept. 24, 1930. [Class 39 (i).] A cathode-ray tube, especially for television purposes, has a mercury-vapour filling, which is developed from a mercury supply by heating the tube. In the arrangement shown in Fig. 1, the tube 1 is surrounded by a coil 2 which can be heated to any desired temperature by supplying current through a variable resistance 6. The tube is preferably provided with a metallic screening cover 3, preferably of iron or other magnetic material, to protect it from electromagnetic or electrostatic effects from the heating current. The screen 3 may be in the form of a wire netting ; if a uniform screen is used it is preferably subdivided by slots. In a modified arrangement, Fig. 2, a separate heating coil 7 is placed in one casing 4 containing the cathode-ray tube, and the casing is filled with iron shavings or iron powder to serve as a screen. In another arrangement, the heating effect necessary for the vaporization of the mercury is obtained by mounting the amplifying or rectifying tubes in the same casing as the cathode-ray tube, the casing being provided with valves for the adjustment of temperature. Reference has been directed by the Comptroller to Specification 206,081, [Class 39 (i), Electric lamps, Arc &c.].
Patent GB-969342-A (GB)
Title: Substituted phenyl-formamidines and methods and pharmaceutical compositions
Inventor: BROWN NORMAN COOPER
Filed: 1961-07-21
Abstract: The invention comprises compounds of general formula R1-N=CH-NR2R3 wherein R1 is a phenyl ring carrying in the 2 or 3 position a hydrogen, chlorine or fluorine atom or a methyl group, and R2 and R3 are each a methyl or ethyl group or R2R3 is a divalent hydrocarbon chain having from 3 to 6 carbon atoms and optionally containing one double bond, and acid addition salts thereof (N,N-dimethyl -N1- phenyl-formamidine and its hydrochloride and picrate and solutions thereof in common preparatory solvents are disclaimed); and their preparation by reacting a compound R1NH2 with a compound H.CO.NR2R3, or by reacting a compound R2R3NH2 with a compound HC(:NR1)(OR4) where R4 is a hydrocarbon group.  Pharmaceutical compositions comprise the above compounds with acceptable carriers and are prepared by admixture.  Oral (tablets, granules, powders, capsules, cachets or suspensions, and in food) and parenteral (solutions, suspensions), administration (and as suppositories and pessaries) are mentioned. The compounds combat nematodes, for example in animals.  According to the Provisional Specification, R2 and R3 may also be allyl or propargyl or, when a divalent chain, may contain an oxygen or sulphur atom; additional methods of preparation mentioned are the reaction of compounds R1NCO or R1NCS with HCONR2R3, and of R2R3NH with HC(:NR1)(NR4R5), and of R1NH2 with HC(:NR6)(NR2R3), where R4, R5 and R6 are each hydrogen or a hydrocarbon radical.
Patent GB-226316-A (GB)
Title: Improvements in hand stamping apparatus
IPC: B41K1/54
Filed: 1923-10-25
Abstract: 226,316. Holden, H. Oct. 25, 1923. Type cases.-A hand-stamping apparatus for use in hotels comprises a box 1 having an ink pad 6 at the bottom, and holding, by means of apertures 3 in its top 2, a number of stamps 7 with their type faces .resting on the ink pad. Each stamp has an enlarged head by which it is grasped, and on which is indicated by numerals the type carried thereby. The partitions 4 between the apertures 3 may also be marked to indicate the type carried by the stamp in the adjacent aperture.