baber/WOPTO huggingface dataset:
Patent GB-892160-A (GB)
Title: Improvements in and relating to polymerisation
IPC: C08F36/04
Filed: 1959-09-17
Abstract: Synthetic rubber is prepared by polymerizing at low temperature an aqueous emulsion of synthetic rubber forming monomers containing 1 to 10 parts of an emulsifying agent in the presence of an organic peroxide catalyst and an activator system which comprises a complex iron salt or a simple iron salt and a complexing agent therefor and a mixture consisting of 15 to 70 molal per cent of sodium benzaldehyde sulphoxylate and 85 to 30 molal per cent of sodium formaldehyde sulphoxylate, this mixture being present in from 0,02 to 2 parts per 100 of monomers and the concentration of the iron in the reaction mixture being less than 0,008 parts per 100 of monomer.  Specified synthetic rubber forming monomers are butadiene, isoprene, piperylene, 2,3-dimethyl butadiene, chlorobutadiene, and their mixtures with each other or with acrylonitrile, methyl acrylate or methacrylate, styrene, vinyl naphthalene, parachlorostyrene, vinylidene chloride and vinyl pyridine.  The complex iron salt may be disodium ferrous or monosodium ferric ethylenediamine tetraacetate and the simple salt and complexing agent ferric chloride and tetrasodium ethylenediamine tetraacetate.  Specified organic peroxides are paramethane, cumene, and diisopropylbenzene hydroperoxide while the emulsifying agent may be a fatty acid soap or a rosin acid soap or a 50/50 fatty acid/disproportionated rosin acid soap mixture.  A polymerization regulator, e.g. an aliphatic mercaptan of 6 to 18 carbon atoms, may also be present.
Patent GB-306887-A (GB)
Title: Improvements in or relating to apparatus for sharpening twist drills
IPC: B24B3/24
Filed: 1928-10-31
Abstract: 306,887. Touzot, P. Feb. 27, 1928, [Convention date]. Twist drills, sharpening. -Apparatus for sharpening twist drills consists of a grinding wheel 2, operating with its flat face or with its peripheral edge upon a drill 6 which is carried by a holder 5 rotatably mounted with the axis of the drill inclined to the grinding surface. The holder also is rotatable about an axis 4 lying in the working face of the wheel 2 and passing through the point of the drill, rotation of the drill or its axis causing the rotation about the axis 4 by means of toothed sectors 7, 8; the drill may be rotated by a motor. The wheel 2 or the holder may be moved parallel to the grinding-plane to compensate for wear of the wheel.
Patent GB-707870-A (GB)
Title: Supported magnesium chloride-copper chloride catalyst
IPC: B01J27/06
Filed: 1952-12-15
Abstract: A mixture of methyl chloride, methylene chloride, chloroform, and carbon tetrachloride is obtained by passing methane and hydrogen chloride over a catalyst consisting essentially of a porous and substantially inert carrier impregnated with a chloride of copper and with from 0.1 to 0.65 mol. of magnesium chloride per mol. of copper compound (see Group III).  Reaction takes place at approximately 400 DEG  C. with a contact time of 0.15 to 0.35 minutes.  The use of catalysts containing chlorides of thorium, chromium, manganese, calcium, cerium, cobalt, nickel, cadmium, zinc, and potassium in place of the magnesium chloride is described for comparative purposes.ALSO:A catalytic reaction mass for use in the oxychlorination of hydrocarbons consists essentially of a porous and substantially inert carrier impregnated with a chloride of copper and with from 0.1 to 0.65 mol of magnesium chloride per mol of copper compound. The carrier is preferably calcined diatomaceous earth, but porous p  clay and pumice are also mentioned.  An aqueous solution containing cupric chloride and magnesium chloride is added to the carrier, the product is dried, and the cupric chloride is reduced to the cuprous state by the passage of methane or other hydrocarbon gas, and then converted to cupric oxychloride by treatment with air.  By passing a mixture of methane and hydrogen chloride over the catalyst at approximately 400 DEG  C. a product containing methyl chloride, methylene chloride, chloroform, and carbon tetrachloride is obtained. Catalysts containing chlorides of thorium, chromium, manganese, calcium, cerium, cobalt, nickel, cadmium, zinc, and potassium in place of the magnesium chloride are described for comparative purposes.
Patent GB-788297-A (GB)
Title: Improved process for separating and purifying condensation products
IPC: C08G69/46
Filed: 1954-11-04
Abstract: <PICT:0788297/III/1> Apparatus for the production of polyamides comprises a pressure vessel 12 heated by element 11 and so arranged that the lower part is at a lower temperature than the remainder whereby low molecular weight polymer separates from a supernatant aqueous layer containing impurities (see Group IV (a)).  The temperature differential may be obtained by omitting insulation from the bottom of the vessel or by providing the bottom of the vessel with cooling fins or, as shown, by means of a cooling coil 20 through which air or liquid may be circulated.  The cooling liquid may be the polyamide forming material itself in which case the coil opens at an intermediate part of the vessel and the material is continuously fed in, low polymer being continuously removed from the bottom of the vessel and water also by any suitable means. Thermometers 14-16 are provided.  Specifications 763,994, [Group IV (a)], and 788,298 are referred to.ALSO:In the preparation of polyamides, water-soluble impurities are removed from the raw materials by the following procedure: The raw materials are heated with water to polyamide-forming temperatures under sufficient pressure to prevent the water boiling, in a reaction vessel the lowermost zone of which is maintained at a temperature below that in the remainder of the vessel, until a water-insoluble low molecular weight polyamide is obtained in the lowermost zone substantially separated from an overlying layer of water and substantially free from water-soluble impurities.  This polyamide is then withdrawn either in the molten or solid condition.  The process may be operated continuously, the raw materials and water being fed into an intermediate part of the vessel.  The feed, suitably preheated, serves to maintain the lowermost zone at the required reduced temperature.  The low polymer is continuously tapped off at the bottom and the water, together with impurities, at the upper part of the vessel.  The invention is described with reference to the polymerization of 11-amino undecanoic acid as a 50 per cent paste with water, the lowermost zone being at 220 DEG  C. and the remainder of the vessel at 262-265 DEG  C.  The low polymer is formed after heating for an hour and a half, nine-tenths of the polymer being then withdrawn and the vessel refilled after withdrawing the water.  The process is stated to be suitable also for obtaining polyamides from lactams and from diamines and dibasic acids.  The Specification describes suitable apparatus, the apparatus forming the subject-matter of Specification 788,298, [Group III].  Specification 763,994 also is referred to.
Patent GB-272567-A (GB)
Title: Improved manufacture of solutions of derivatives of dioxydiaminoarsenobenzene
IPC: A61K47/26
Filed: 1925-12-17
Abstract: 272,567. MacEwen, S. R. Dec. 17, 1925. Hypodermic injections.-Solutions of arsenical drugs which are derivatives of dioxydiaminoarsenobenzene are prepared by dissolving the drug in water together with a sugar and a soluble salt of a phospho-acid, such as an acid phosphate, phosphite or hypophosphite. Solutions ready for injection are prepared and put up in sealed ampoules, and are stated to keep for long periods without developing toxicity. Arsenical drugs specified are arsphenamine, neoarsphenamine and sulpharsphenamine, whilst dextrose is mentioned as a suitable sugar. A little alkali may be added to the solutions to inhibit any gel formation. Tables are furnished showing the preservative action of dextrose alone, of sodium acid phosphate alone, and of the two substances together on solutions of neoarsphenamine. Specifications 112,984 and 221,565 are referred to.
Patent GB-1320789-A (GB)
Title: Scanning magnetic head
IPC: G11B5/127
Filed: 1970-07-01
Abstract: 1320789 Magnetic heads MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 1 July 1970 [2 July 1969] 31999/70 Heading G5R In a recording head of the type which, though stationary, scans a succession of tracks transverse to the direction of movement of a record medium by means of the movement of the effective recording area along the recording gap, the signal, to be recorded is applied to a first magnetic circuit 12, 12<SP>1</SP> including a non- magnetic gap spacer 13 while two "scanning" magnetic fields symmetrical with respect to the gap are produced in second and third closed magnetic circuits 12, 14, 15, 16, 18, 19 and 12<SP>1</SP>, 14<SP>1</SP>, 15<SP>1</SP>, 16<SP>1</SP>, 18<SP>1</SP>, 19<SP>1</SP> respectively, disposed on opposite sides of the gap spacer 13 and each including a part, 12 or 12<SP>1</SP>, of the first magnetic circuit. The magnetic members 12, 12<SP>1</SP> may take the form of coatings on non-magnetic members 10, 10<SP>1</SP> having grooves 11, 11<SP>1</SP> to accommodate signal windings (20, 20<SP>1</SP>, Fig. 9, not shown).
Patent GB-721266-A (GB)
Title: Improvements in animal feeding devices
IPC: A01K9/00
Filed: 1952-12-18
Abstract: 721,266. Piglet feeders. PERCY, J. R. Dec. 18, 1952. No. 32093/52. Class 5 (2). A. feeding device for piglets comprises a number of teats 8 arranged in one or more rows in the wall of a milk container 7 and so spaced that the feeding piglets assume natural side-by-side positions, heating-means, e.g. one or more infra-red lamps 14, being provided to maintain proper ambient temperature for the piglets without deleteriously heating the milk in the container or the teats. The container is mounted in a two-part hinged front 3, 4 of a casing 1, the forwardly-inclined canopy 2 of which supports the lamps 14. The teats are resiliently mounted in the container and are attached to tubes 17 extending to near the bottom of the container so that the nuzzling action moves the tubes and agitates the milk. For dry feeding, a'trough 25 is disposed at the back of the casing.
Patent GB-471456-A (GB)
Title: Improvements in or relating to stays for hay-stacks
IPC: A01F25/12
Filed: 1936-11-24
Abstract: 471,456. Haymaking. ITEM, J. Nov. 24, 1936, No. 32108. Convention date, Nov. 27, 1935. [Class 6 (iii)] [Also in Group XIV] A stay for supporting a heap of hay comprises a central vertical support formed by two telescopic tubes 1, 3, the inner tube 1 having a cap 2 rotatably mounted thereon and the outer tube 3 terminating at its lower end in a point and being provided with a foot rest 5. Supporting channel-shaped arms 4 for the hay are pivoted on bearing pins 9 in the inner tube and extend through slots 11 in the outer tube. By relatively displacing the inner and the outer tubes the lower ends of the slots engage the lower edges of the arms 4 and force the arms outwards to expanded position : the cap 2 on the end of the inner tube is provided with a longitudinal slot 7 having short lateral extensions at its ends, this slot forming a guide for a pin 8 on the outer tube when the tubes are displaced and thus serving to lock the tubes with the arms in open or closed position. Shoulders 10 are formed on the arms. The Specification as open to inspection under Sect. 91 comprises a modification in which the arms are pivoted on the outer tube and provided with projections that pass through slots in or bear against the inner tube in the closed and the open positions respectively. This subject-matter does not appear in the Specification as accepted.
Patent GB-824470-A (GB)
Title: Separating nickel from solutions containing nickel and cobalt
Inventor: BENOIT ROBERT LUCIEN
IPC: C01G51/12
Filed: 1957-10-15
Abstract: Nickel is separated from cobalt from a solution which contains cobalt sulphate in trivalent form and a smaller amount of nickel sulphate, at least 4 mols., preferably 4.5 mols., of bound ammonia per gram atom of cobalt and nickel, and at least 300 g.p.l. of ammonium sulphate, by reducing an amount of trivalent to bivalent cobalt at least equivalent to the amount of nickel in the solution, adjusting, at a temperature below 45 DEG  C., the pH of the solution to below 3.5 to precipitate nickel and bivalent cobalt values, and separating the precipitate from the solution.  The trivalent cobalt may be reduced by the addition of cobalt powder or cobalt sulphate.  The pH of the solution may be regulated by the addition of sulphuric acid. Prior to the reduction step at least a major portion of the dissolved cobalt may be oxidized to the trivalent form by reacting the solution at above atmospheric temperature, preferably 30 DEG  C.-93 DEG  C., with a free-oxygen-containing gas at a partial pressure of oxygen greater than one atmosphere.  The solution to be treated may be obtained by leaching a material containing the metal values, such as ores, in which case the solution should be purified.  If an ammoniacal leach is employed iron values are precipitated, but in the case of an acid leach, the pH of the solution should be adjusted to about 5.5 and a free oxygen containing gas passed in to precipitate the iron values.  Any copper present may be precipitated by cementation.  If the ratio Ni : Co is greater than 1 : 1 some of the nickel values may be recovered by adjusting the ammonia content of the solution to a little less than 2 gram mol. ammonia/gram mol. nickel, and reacting with hydrogen at a partial pressure of hydrogen of about 21 atmospheres and at a temperature of about 175 DEG  C. Metallic nickel is precipitated.  Further nickel is removed by adjusting the ammonia content to 4-4.5 gm. mols. per gram atom (Co + Ni), and oxidizing at above room temperature, preferably 30-93 DEG C.  Sulphuric acid is added to reduce the pH to below 6.5 and preferably to 3.5-2.5.  Nickel ammonium sulphate is precipitated. The residual solution is now processed according to the invention to precipitate nickel together with bivalent cobalt values leaving a solution free from nickel.
Patent GB-618304-A (GB)
Title: Improvements in or relating to coated electrodes for arc welding
IPC: B23K35/365
Filed: 1946-10-29
Abstract: A coated welding rod with a mild steel or low alloyed chromium or chromium nickel steel core has a coating comprising a binder of potassium water glass with ferromanganese 8-30 per cent, preferably 10-25 per cent silica free, or combined 22-54 per cent, preferably 30-48 per cent alkaline, earth carbonates 4-40 per cent, preferably 8-28 per cent, titanium oxide 5-35 per cent, preferably 8-25 per cent.  The coating is substantially free of iron oxides.  Iron powder not exceeding 20 per cent may be added to the coating.  Specification 488,871 is referred to.
Patent GB-947733-A (GB)
Title: Rubbery copolymers
IPC: C08K3/22
Filed: 1961-09-07
Abstract: A chlorinated isoolefin-multiolefin composition comprises vulcanizing agents and magnesium oxide having a surface area of from 90 to 200 sq. metres per gram.  The magnesium oxide may be present in an amount of from 5 to 20 parts by weight per 100 parts of copolymer.  Other additives such as talc, titanium dioxide and hydrated silicon dioxide may be used.  The composition is vulcanized at a temperature greater than 212 DEG F.
Patent GB-441310-A (GB)
Title: Apparatus for stopping looms or other electrically driven machines requiring immediate stopping in case of derangement
IPC: D03D51/00
Filed: 1934-11-08
Abstract: 441,310. Stopping electrically-driven machines. SCHORCH-WERKE AKT.- GES., Rheydt, Rhineland, Germany. Nov. 8, 1934, No. 32200. Convention date, Nov. 9, 1933. [Class 38 (iii)] [See also Group IX] Relates to means for stopping looms and other electricallydriven machines which require to be stopped immediately on derangement and wherein a switch is arranged to switch the motor out of circuit, apply reverse current braking, and after the motor has begun to reverse its direction, to move into a final stopping position. According to the invention, the switch makes a series of free movements under the influence of springs alone whereby the delay due to inertia of the parts is obviated. The invention is described as applied to a loom. As shown, the starting handle 1 is held in the running position against the action of a spring 3 and has turned a lever 5 on a shaft 30 from the position F to position H. A pin 32 on a disc 23 on the shaft is connected to one end of a spring 7 the other end of which is connected to a pin 33 on a detent disc 31 on the shaft 34 of the switch 6. As shown, the spring 7 has rotated the shaft 34 from the off position 0 to the running position V, while a pawl 8 has engaged the disc 31 to prevent further rotation. In the event of derangement such as weft breakage, a rod 9 is reciprocated and closes a simple or delay action switch 10 whereby a magnet 11 is energized to release the detent or pawl 8 and allow the switch 6 to turn under the influence of the spring 7 into the reverse running position R where it is retained by a pawl 15 having spring connection with the pawl 8. Upon further movement of the rod 9, the handle 1 is released and moves under the influence of the spring 3, whereby the spring 7 is tensioned in the opposite direction. In some cases, the handle 1 is released by an electromagnet controlled by the switch 1. An arm 18 frictionally mounted on the driving-shaft of the loom normally makes contact with the lower adjustable stop 20. When the loom begins to be driven backwards, the arm 18 opens a switch 19 in the circuit of the magnet 11 so that the pawl 15 is released and the switch 6 turns from the reverse position R and through the forward position V to the stopping position 0. The reciprocation of the rod 9, is timed with the oscillation of the lay 44 so that the loom stops in open-shed position. A delay action switch 21 controlled by a cam surface on the disc 23 is provided to prevent the loom from being stopped immediately after a fault, such as a broken thread, has been corrected. The handle 1 may be arranged to move to the right beyond the position shown, in order that the loom may be driven backwards, when required, while the switch 6 may be provided with a handle for the same purpose.
Patent GB-385715-A (GB)
Title: Mechanical pencils
IPC: B43K21/00
Filed: 1931-11-20
Abstract: 385,715. Pencil holders. PARKER PEN CO., Court Street, Janesville, Wisconsin, U.S.A. Nov. 20, 1931, No. 32235. Convention date, June 4. [Class 146 (iii).] A pencil holder having leadpropelling mechanism is provided with a removable refill receptacle frictionally mounted in the barrel, the whole of the receptacle including its end closures being contained within the barrel. The propelling- mechanism 22 is mounted in the lower section 20 of the barrel and is preferably actuated by rotation of the point 23. The rear section 21 of the barrel is. provided with a metal lining 27 which is a friction fit on a sleeve 24 screwing into the rear end of the section 20. The refill container is formed of a tube 31 having a closed lower end and an eraser 32 permanently secured in the open end. A slot 33 is formed in the wall of the tube to give access to the leads. To prevent rotation of the container.when the eraser is being used an indentation 34 may be formed in the sleeve 24 to engage a corresponding indentation in the container connected with the'slot 33, the engagement of the indentation 34 with the end of the slot 33 also serving to limit the extent of the insertion of the container ; alternatively, this may be effected by the provision of a flange on the container. In a modification, the container is carried in a sleeve mounted in the rear section of the barrel.
Patent GB-1269897-A (GB)
Title: Selective weed control process
IPC: A01N47/30
Filed: 1970-07-03
Abstract: 1,269,897. Post-emergent herbicidal treatment. PEPRO SOC POUR LE DEVELOPPEMENT ET LA VENTE DE SPECIALITES CHIMIQUES. 3 July, 1970 [3 July, 1969], No. 32408/70. Heading A5E. A selective weed control process comprises subjecting a cereal crop to post-emergent treatment with a herbicidal composition containing nitrofen and neburon in a ratio of 1 part by weight of nitrofen to from 0.1 to 30 parts by weight of neburon.
Patent GB-292025-A (GB)
Title: Improvements in and relating to electrical plant for the transmission of power
IPC: H02P7/34
Filed: 1927-12-01
Abstract: 292,025. Poolman, C. G. N. Dec. 1, 1927. Drawings to Specification. Systems for transmitting mechanical power.- On a petrol-electric vehicle in which control is obtained by successively varying the strength of the generator field and the motor field, a switch for connecting the generator and motor is associated with an interlocking contact actuated by the engine accelerator pedal, which must be depressed before power can be transmitted electrically to the wheels.
Patent GB-1291155-A (GB)
Title: A method of, and apparatus for calibrating an electromagnetic flowmeter for commercial use
Inventor: WADA ICHIRO
IPC: G01F25/00
Filed: 1970-07-03
Abstract: 1291155 Electromagnetic flowmeters TOKYO SHIBAURA ELECTRIC CO Ltd 3 July 1970 [3 July 1969 (2)] 32454/70 Heading G1N An electromagnetic flowmeter having a large diameter conduit 19 is calibrated by passing the fluid through a duct 11 of insulating material and having a rectangular cross-section, as shown, a pair of electrodes 12, 13 being provided in the smaller walls of the duct 11, and a pair of magnetic shields 26, 27 being provided on the internal walls of the duct. The volume of fluid required for calibration is thereby reduced.
Patent GB-1241495-A (GB)
Title: Improvements relating to cathode-ray tubes
Inventor: TURNER GEORGE CHRISTIE
IPC: H01J29/14
Filed: 1969-06-27
Abstract: 1,241,495. Tenebrescent materials and uses thereof. FERRANTI Ltd. 24 June, 1970 [27 June, 1969], No. 32519/69. Addition to 1,196,059. Heading C4S. A cathode-ray tube as in the parent Specification claims 1, 4 to 8, where claims 4 and 5 are dependent from claim 1 only and claim 7 is dependent from any one of claims 1, 4, 5 and 6 only is modified by the substitution of tenebrescent crystalline calcium fluoride doped with sulphur for the oxygen doped calcium fluoride screen. The sulphur doping may be by heating in hydrogen sulphide before or after deposition on the screen. The material may be synthetic or naturally-occurring fluorspar and the translucent or transparent screen formed by ground particle settling through a binder or by evaporation. Electrons develop 5700 A absorption bands producing brown traces, which fade over several hours, although erasure may be by U.V. radiation 14 of 3600 Š, the rate of erasure being variable with intensity. A yellow-green 5700 Š Hg lamp source 15 enhances the contrast by projection through window 16 via filter 17, although white light including yellow-green wavelengths may be used. In Fig. (2) not shown, both radiations pass through window 16, and a filter (19) adjacent the front surface of the screen absorbs U.V. Alternatively, the contrast enhancing radiation may be as 14, and the screen not transparent or translucent to same. The U.V. or contrast enhancing radiation may be formed in a composite screen, including U.V. phosphor lead doped barium silicate or copper doped zinc sulphide on the non-displayed face, two electron beams of different energies being used. When one beam activates a U.V. phosphor it must be ensured that the beam erasure is greater than that of electrons penetrating to front layer, although selective erasure is possible. Viewing may be direct or by projection.