baber/WOPTO huggingface dataset:
Patent GB-824585-A (GB)
Title: Dioxazine dyestuffs
IPC: C09B19/02
Filed: 1957-10-07
Abstract: The invention comprises a dioxazine dyestuff of the formula <FORM:0824585/IV(c)/1> where R is hydrogen, alkyl, haloalkyl, cyanoalkyl or hydroxyalkyl containing 1 to 3 alkyl carbon atoms, cycloalkyl, aralkyl or aryl, and n is 1 to 2, and a process for making it by dissolving a dioxazine dyestuff of the formula <FORM:0824585/IV(c)/2> in tetraphosphoric acid (a solution of P2 O5in orthophosphoric acid) having a P2O5 content of about 76 to 86% by weight at a temperature of about 100 DEG  to 200 DEG  C. and maintaining the resulting solution within said temperature range to complete the reaction.  Values mentioned for R are hydrogen, methyl, ethyl, propyl, chloromethyl, chloroethyl, cyanoethyl, hydroxymethyl, hydroxyethyl, hydroxypropyl, cyclohexyl, benzyl, phenyl, diphenyl or naphthyl.  The dioxazine starting materials are made from chloranil and an appropriate 3 aminocarbazole in known manner.  The invention also comprises vat dyeing solutions for dyeing nylon fibres containing the reduced form of the above dyestuff dissolved in a 25 to 85% by weight solution of pyridine in water.  Vat dyeing solutions are made by treating the dyestuff with a reducing agent such as sodium hydrosulfite and, if desired, an alkali such as caustic soda in an aqueous organic solvent medium.  Solvents mentioned are pyridine, picoline, formamide, N-ethyl-, N : N-dimethyl-or N : N-diethyl-formamide and mixtures thereof.  The amount of dyestuff used may be 0.05 to 2% by weight of the medium and 0.5 to 5% by weight of the fibre.  The vat solution may be diluted about 2 to 10 times with water and nylon treated at fibre-liquor ratios of about 1 : 5 to 1 : 50. Oxidation is effected by air or chlorinated aromatic sulfonamides, hydrogen peroxide or ammonium or alkali-metal perborates, percarbonates, peroxides, persulfates or bichromates. Examples are given.
Patent GB-1151714-A (GB)
Title: Electron Beam Deflection and Low Voltage Supply Circuit
IPC: H04N3/18
Filed: 1966-07-13
Abstract: 1,151,714. Thyristor sawtooth generating circuits. RADIO CORPORATION OF AMERICA. 13 July, 1966 [6 Aug., 1965], No. 31415/66. Heading H3T. In a line output stage, for a television receiver, a series arrangement of capacitors 27, 28; deflection coils 30 and thyristor 22 are effectively connected in parallel, an auxiliary low-voltage supply is derived from a resistance/ capacitance citcuit 26a, 26b connected in series with the thyristor 22. As described, the circuit is supplied from a 140 v. source 32 and provides 20-30 v. across capacitor 26a for the heater of the cathode-ray tube and for the vertical and horizontal oscillators (not shown). Diode 31 clamps the deflection coils 30 and the capacitor 29 to supply 32 during each trace portion so that an S-wave of current flows in deflection coils 30. When thyristor 22 is triggered by a pulse from the line oscillator, capacitor 27 is resonantly discharged via inductor 25 and capacitor 26a. The rapid fall in voltage across capacitor 27 is coupled by capacitor 28 to reverse bias diode 31, initiating the flyback. Thyristor 22 becomes non-conductive when the voltage across it reverses, terminating the flyback and allowing capacitors 27, 28 to recharge via inductors 33, 34. Circuit 35, 36 prevents ringing.
Patent GB-1005536-A (GB)
Title: Hot water boiler
IPC: F24H9/18
Filed: 1964-08-04
Abstract: 1,005,536. Hot-water boilers. G. OSPELT. Aug. 4, 1964 [Aug. 9, 1963; March 3, 1964], No. 31430/64. Headings F4A and F4W. A hot-water boiler comprises a combustion chamber 2 surrounded by inner and outer annular water jackets 1, 4 through which pass a closable solid feed aperture 5 to the combustion chamber 2. The boiler water heats water in a tap-water heater 3 atop the combustion chamber 2 as well as heating a radiator system. The boiler is supported on two U-shaped plates 6, to which rails 8 are welded just below apertures 13 in the sides of the U-plates. A removable base 11 which carries the combustion device (an oil burner, gas burner or solid fuel grate), is lifted up to seal off the bottom of the combustion chamber, by a sealing surface on a flange 12 of the base 11 bearing against the bottom of the water jackets 1, 4, due to the insertion of wedge pieces 9 through apertures 13, to co-operate with a second inclined rail carried by the base 11. Insertion and withdrawal of the wedges 9 is effected by turning a threaded bolt on which a nut attached to the wedge travels. The base 11 may be replaced by another base carrying an alternative form of combustion device by removing the wedges, replacing the base by the second base and replacing the wedges. In the embodiment shown in Figs. 9 and 10, a flue pipe 116 is connected at the bottom of the water jacket 101 to the annular flue 121 defined between the inner and outer water jackets 101 and 117 respectively. The combustion gases pass to the flue pipe 116 from combustion chamber 102 via the annular flue 121. A crescent shaped barrier wall 122 is removably mounted above the flue pipe mouth, extending taperingly in both directions around the annular flue 121 to create a uniform draught above the wall 122. In the water jacket 101, two vertical partitions 124 and a horizontal partition 127 and partition 129 define a chamber 126 open at the top, near the level of the top of the jacket, but closed at the bottom to communicate only with the outlet pipe 119 from the inner water jacket 117. The water rising in chamber 126 has an injector action on the water in open ended channels 131 defined between the partitions 124 and vertical baffles 130 to cause a directed water circulation in the jackets.
Patent GB-887935-A (GB)
Title: Improvements in or relating to the manufacture of water gas
Inventor: RUSCHIN KURT
IPC: C10J1/213
Filed: 1958-10-02
Abstract: 887,935. Wattr gas. POWER GAS CORPORATION Ltd. Oct. 2, 1958, No. 31431/58. Drawings to Specification. Class 55 (1). In a cyclic process for producing water gas having a back-run in each run period the final portion of the back-run is operated with air instead of steam and is continued until the nitrogen content of the gas passing into the generator or of the gas produced rises to a predetermined level, e.g. to above 10%. The end of the back-run period may be followed by a short up-run with steam before commencement of the blow period. Carburetting of the water gas, if desired, is effected during the uprun of a run period. During a blow period when the plant employed has a carburetting and a superheating zone secondary and tertiary air may be admitted to the blow-gases respectively as they pass through the carburetting and superheating zones. The cessation of the final portion of the backrun may be determined automatically by a chemical or physical property of a gas sample withdrawn from a suitable sampling position.
Patent GB-802060-A (GB)
Title: A process for avoiding the formation of scale and corrosion in the economizers for steam boilers
IPC: C02F5/08
Filed: 1956-10-16
Abstract: 802,060. Preventing scale in economizers. NATIONAL ALUMINATE CORPORATION. Oct. 16, 1956 [Oct. 26, 1955], No. 31441/56. Class 123(1) Scale formation in economizers of steam boilers is prevented by adding for example 60-200 milli-grammes per litre of a mixture containing 40-60 per cent by weight of acidic polyhydroxy aromatic compounds and 10-20 per cent by weight of neutral inorganic salts to the feedwater. The mixture may also contain lignin materials, for example, sodium lignosulphonates and anti-foaming ingredients. Glucoside esters which are hydrolizable into polyhydroxy compounds or salts of a weak base containing a polyhydroxy aromatic nucleus may be also used in the mixture.
Patent GB-624108-A (GB)
Title: Improvements in the manufacture of penicillin and other antibiotic products
Filed: 1946-10-23
Abstract: Penicillin and other antibiotic substances produced by the growth of moulds are obtained by growing a mould on a culture medium consisting of glucose lactose or the like, together with an amylaceous product and mineral salts, purified or pretreated with less than 5 per cent of decolorising activated carbon, the carbon being afterwards separated from the medium before insemination of the latter.  In a preferred method, Penicillium notatum is grown on a medium consisting of 2-4 per cent lactose, 5-15 per cent of corn steeping liquor, monopotassium phosphate, nitrate of soda and water, the pH of which had been adjusted to 5.4, the medium having been treated with 1-3 per cent of its weight of decolorising carbon activated by means of steam.
Patent GB-1489125-A (GB)
Title: Welding
IPC: B23K9/12
Filed: 1976-06-30
Abstract: 1489125 Welding WILMOT-BREEDEN Ltd 30 June 1976 [28 July 1975] 31482/75 Heading B3R Welding equipment wherein the feed of welding wire 1 is interrupted at controlled intervals to terminate successive welds, comprises control means for controlling the feed of the wire so that the length of wire fed is measured and the feed is interrupted automatically when the measured length reaches a preselected value. The equipment may be used for the successive spot or bead welding of motor vehicle bumpers. The wire is drawn from a reel 2 by feed rollers 3, 4 driven by a feed motor initially started by a switch 5, the weld commencing as a result of the feed of the wire and current passing through a coil 9 to operate a reed switch 10 to actuate a relay RLA which closes contacts RLA in a pulse counting circuit. The rotation of the feed roller 3 rotates an apertured disc 13 disposed between a light-emitting diode and a photo-electric cell 12 which transmits pulses to a pulse squaring circuit 13 and a counter 14 of the pulse counting circuit. When the number of pulses equals that set by programmed switches 15, an output pulse is passed through gates 16, 17 to a switching transistor 18 of a relay RLB which opens contacts in the circuit of the feed motor to thus determine the length of the welding wire fed to the weld. In another embodiment, the apertured disc is replaced by a ferrous toothed wheel, the teeth of which pass an electromagnetic sensor to produce the pulses which are fed to the counter to determine the length of welding wire fed to the weld. The equipment may additionally include a timer for terminating the welding cycle after a predetermined time interval.
Patent GB-681141-A (GB)
Title: Improvements in or relating to luminescent materials
IPC: C09K11/64
Filed: 1946-10-23
Abstract: 681,141. Luminescent materials. PHILIPS LAMPS. Ltd. Oct. 23, 1946 [Feb. 25, 1943], No. 31493/46. Class 39(i) A luminescent material for producing red light, particularly for use in electric discharge tubes, comprises aluminium oxide, calcium and/or strontium oxide and magnesium oxide with manganese present as an activator in the form of oxide of manganese in which the valency of the manganese is greater than two such as a heterogeneous oxide, in which, calculating in mol. per cent, the ratio between the quantity of aluminium oxide and the sum of the quantities of the other oxides lies between (4:1) and (10:1) and the quantity of magnesium oxide constitutes 1 to 20 mol. per cent of the sum of the quantities of the oxides of magnesium, calcium, strontium, and manganese, whilst the quantity of the oxide of manganese is 1 to 5 mol. per cent of the sum of the quantities of the oxides of magnesium, calcium, strontium and manganese. The ratio of the quantity of aluminium oxide to the sum of the quantities of the other oxides can be 6:1, the quantity of magnesium oxide can be 10 mol. per cent of the sum of the quantities of the oxides of magnesium, calcium, strontium and manganese and the quantity of oxide of manganese can be 1 mol. per cent of the sum of the quantities of the oxides of magnesium, calcium, strontium and manganese. The luminescent material can be prepared by heating, preferably to about 1500‹C, a mixture of the oxides or a mixture of compounds from which the oxides are formed, in a non-reducing medium, preferably an oxidising medium such as air or oxygen. The luminescent material emits red light with a maximum in the spectral distribution at approximately 6700A under the action of long wave ultraviolet radiation and can be mixed with luminescent materials emitting light of another colour. Specification 512,154 is referred to.
Patent GB-484886-A (GB)
Title: Improvements relating to variable ratio transmission gear, particularly for use with motor generator starters for internal combustion engines
IPC: F02N15/02
Filed: 1937-11-16
Abstract: 484,886. Gearing varying in ratio as drive is applied to one or other member; engine turning-gear. MOISY, A. Nov. 16, 1937, No. 31498. Convention date, Nov. 19, 1936. [Class 80 (ii)] [Also in Group XXVII] Gearing automatically varying in ratio according to the sense of drive, particularly for use with a combined electric current generator and starter-motor of an internal-combustion engine, includes a double internallytoothed planetpinion 33, carried loosely on an eccentric 35, fast to the armatureshaft 12. The planet-pinion 33 engages a pair of sun-wheels, one 14 of which is rigidly connected by a toothed disc 37 to a casing 48, formed with a groove to receive a belt connecting it with the engine, the sun-wheel 14 being mounted on the shaft 12 by means of a one-way roller clutch 17, which thus provides a direct-drive from the engine to the shaft 12 when the machine is acting as a generator. When the machine is acting as a starter-motor, a reduced drive is transmitted from the eccentric planet carrier 35 to the sun 14 and casing 48, reaction being taken by the other sun-wheel 15, which is mounted by means of a one-way roller detent 22, acting oppositely to the roller clutch 17, on a sleeve 24, connected frictionally to the fixed machine-casing 13 by an endflange 26, adjustably pressed against the casing by a nut 29, acting through Belleville washers 28. This frictional connection slips in the event of a back-fire or excessive change of engine speed. The planetary gear is balanced by a counterweight 43.
Patent GB-736068-A (GB)
Title: Improvements in or relating to non-skid treads for the tyres of motor vehicles
IPC: B60C11/01
Filed: 1953-11-13
Abstract: 736,068. Pneumatic tyres. TRELLEBORGS GUMMIFABRIKS AKTIEBOLAG. Nov. 13, 1953 [Nov. 13, 1952], No. 31531/53. Class 144 (2). In a circumferentially ribbed tyre tread having a central circumferential groove 16 intersected by transverse grooves which divide the ribs 19, 20, 21, 22 into circumferentially spaced studs or blocks, the groove 16 is given a regular or irregular wave formation to reduce the tendency for build up of undesirable noise during use of the tyre. As shown the tread has a circumferential groove 17, 18 on each side of the central groove 16 to provide four circumferential rows of blocks following the same wave formation, which may be a sine curve about a circumferential axis. The tyre tread may comprise circumferential sections in each of which the wave pattern of the ribs 16, 17, 18 is regular, but different from that of adjacent sections, and preferably repeated between three and five times. The circumferential dimension of the tread studs or blocks may vary in the different sections and the different wave patterns may cover different circumferential extents of the tread. In use on planed snow-covered roads the sinuous grooving of the tyre prevents engagement thereof with snow ridges on the road surface.
Patent GB-1162656-A (GB)
Title: Rotary Percussion Apparatus
IPC: B25D11/06
Filed: 1967-07-10
Abstract: 1,162,656. Percussive tools. SIDDONS INDUSTRIES Ltd. 10 July, 1967 [15 July, 1966; 27 Feb., 1967; 8 June, 1967], No. 31668/67. Heading B4C. [Also in Division B3] A rotary-percussive tool such as for drilling rock or driving pins or studs into hard materials, comprises a rotor 34, 35, having a track 70, 73, in which a striker 75 is movable, the striker being operative upon rotation of the rotor to apply blows to an anvil member 67. The rotor is rotated by means of an electric motor 27 via a gear drive 49, 50, 52, 45 and 41. The striker 67 is slidably mounted in a sleeve 54 which is rotatably mounted in a housing member 31 by means of a worm-and-wheel drive (46, Fig. 3), 57, the worm being rotated by the motor via the above gears. The worm-wheel 57 is coupled to the sleeve by means of a slipping clutch 56, 58. The striker, in the form of a sphere, may be arranged to strike the anvil 67 or the shank 63 of the tool bit " A " directly. The striker is held in the housing 31 by means of a retainer 65 held in position by means of spring-loaded ball (66, Fig. 6).
Patent GB-988863-A (GB)
Title: Machine or mill for crushing or pulverising materials
IPC: B02C4/08
Filed: 1961-09-04
Abstract: 988,863. Roller mills. B. M. BEARDO. Sept. 4, 1961 [Sept. 24, 1960], No. 31698/61. Heading B2A. A roller mill comprises a casing C housing a central crushing roller A and a set of planetary crushing rollers P, means for rotating the rollers A, P about their respective axes, means for rotating the rollers P about the shaft A 1  of the roller A and for rotating the casing about the rollers, and means inside the casing for feeding material to be crushed to the rollers A, P. The shaft A 1  is driven from motor M, Fig. 5, by means of a belt passing round pulleys A 3 , M 1 . A pinion B on shaft A 1  engages pinions P 2  on the shafts P 1  of rollers P. The shafts P 1  are mounted in slots S 1  of the arms of spiders S provided one at each end of the shaft A 1 . The spider arms are secured to the respective side walls C3 of the casing C which is driven from the motor M by means of gears H, H 1 , a lay shaft F and a belt E 1  passing round pulleys E, E 2 . Part of the peripheral wall C 1  of the casing is made removable to form an opening for charging material to be crushed to the mill, the material being conveyed to the crushing rollers by means of blades D on the inside of the wall C 1 . The casing may be perforated in which case it is surrounded by a cover having an outlet and a tray T for receiving crushed material.
Patent GB-1417744-A (GB)
Title: Method and apparatus for longitudinally dividing webs
IPC: B23D19/04
Filed: 1973-07-04
Abstract: 1417744 Cutting apparatus JAGENBERGWERKE AG 4 July 1973 [7 July 1972] 31787/73 Heading B4B An apparatus for slitting a web 1 of, e.g. aluminium foil comprises two pairs of circular cutters 4, 11 and 5, 12 arranged such that a narrow strip 21 of waste material is removed during slitting, the cutting edges of the cutters 4, 5 being subjected to a deformation at the downstream side of the cutting nip thereby providing a contact-free zone between the said cutting edges and the cut material edges 19, 20. The cutting discs 4, 5 are clamped on a shaft 3, a rubber ring 6 being held between the discs. The cutting discs co-operate with cutter rings 11, 12 held in a shaft 15 by spacers 13, 14, 16. In order to provide a clearance between the co-operating cutting edges of the discs and rings on the downstream side of the cutting nip (5), Fig. 2 (not shown), rollers 24, 25 are urged against the discs 4, 5 by means of springs 26, 27; the spring pressure may be adjustable.
Patent GB-1408294-A (GB)
Title: Process for increasing the wear resistance of the surface of  cemented carbide articles
IPC: C23C16/38
Filed: 1972-07-06
Abstract: 1408294 Coating with oxides, borides or nitrides BATTELLE MEMORIAL INSTITUTE 6 July 1972 [7 July 1971] 31826/72 Heading C1A [Also in Divisions B2 and C7] A cemented carbide is coated up to a thickness of 50 microns with the oxide, nitride or boride of Mg, Be, or elements of Groups III to VI of the periodic table, other than oxides of Al and Zr, by deposition from the vapour phase, e.g. by evaporation, chemical vapour deposition or sputtering. Spinel mixed oxides, e.g. MgAl 2 O 4  or MgCr 2 O 4  may be deposited by reacting magnesium chloride and aluminium chloride or chromium oxychloride with a mixture of hydrogen and carbon dioxide. BN, A1N, Si 3 N 4  and VN may be separately deposited by reacting a halogenated compound with are deposited by reacting BCl 3  with the halogenated metal compound. Cr 2 O 3 , MgO, BeO, CeO 2 , ThO 2  or HfO 2  may be deposited by reaction of the corresponding halognated compound with a mixture of carbon dioxide and hydrogen. Nitrides may be Si 3 N 4 , VN, NbN, BN, ThN, TiN, ZrN, TaN or HfN. Borides may be Th, Zr, Hf, Nb, Ta, Ti.
Patent GB-318664-A (GB)
Abstract: 318,664. Dreyfus, H. June 7, 1928. Aliphatic acid anhydrides are produced by heating the corresponding acid, particularly acetic acid, in presence of polyhydric alcohols and their aliphatic acidyl derivatives, such as glycerol or its acetyl derivatives. The reaction may be effected at 250-1000‹ C. and under reduced, ordinary, or increased pressure, such as 3-10 atmospheres, in copper, silica or fireclay tubes, which may contain balls of pumice, kieselguhr, carborundum, &c., or catalysts known to promote the formation of the anhydride. The mixed vapours may be passed through the tube &c. or the alcohol or its acidyl derivative may be injected in vapour or liquid form into the reaction zone. In an example a mixture of the vapours of acetic acid and glycerol containing 4-7 per cent of glycerol is passed through a copper or earthenware tube containing pumice or carborundum at 500-600‹ C. The anhydride may be separated from the reaction vapours by passing through columns at temperatures between the boiling- points of water and the anhydride, or through solvents insoluble in water at temperatures between the boiling points of water and the anhydride, chlorbenzene, p-dichlorbenzene, benzyl ether, tetrachlorethane, paraffin oil, triacetin, phenetol, anisol, one or more cresols, and p-cresyl acetate being mentioned. Or the reaction vapours may be condensed while carrying away the water vapour by the vapour of an entraining liquid as described in Specification 303,772, the liquids mentioned therein or toluene, xylenes, or other entraining liquids of boiling point between those of water and the anhydride being used; or the vapours may be led under the surface of an " extracting liquid " as described in Specification 298,667; or the vapours may be passed over water-binding substances, as described in Specification 289,972; or the vapours may be caused to impinge on the surface of a flowing stream of benzene &c. as described in Specification 310,863, When pressure is employed, it is preferred to release the pressure before the separation of the anhydride. The initial material may be in concentated or dilute form.