baber/WOPTO huggingface dataset:
Patent GB-1137656-A (GB)
Title: Aqueous lacquers based on salts of urethane group-containing partial esters of maleic oils
Inventor: SCHNELL HERMANN
IPC: C09D191/00
Filed: 1967-05-26
Abstract: 1,137,656. Aqueous lacquers. FARBENFABRIKEN BAYER A.G. 26 May, 1967 [27 May, 1966], No. 24682/67. Heading C3R. [Also in Division C7] Aqueous lacquers containing at least one ammonium or amine salt of a urethane group containing partial ester of a maleic oil are prepared by (i) reacting an ester of an unsaturated fatty acid of a natural oil with maleic acid, maleic anhydride or fumaric acid to give a maleic oil, (ii) reacting the maleic oil, optionally together with a polycarboxylic acid or the anhydride thereof, with either a polyol containing urethane groups and obtained from the reaction of a polyol and an isocyanate or a polyhydric, urethane group free alcohol followed by reaction with an isocyanate to give a urethane group containing partial ester of the maleic oil and (iii) forming the aqueous lacquer by addition of water and the amine or ammonia as appropriate. In Example 1, a maleic oil is prepared from linseed oil and maleic anhydride and mixed with an ethylene glycol-2,4 toluene diisocyanate reaction product to form the partial ester which is reacted with triethylamine and dissolved in water to give the aqueous lacquer. In Example 2, a maleic oil is prepared as in Example 1, and mixed with phthalic anhydride and an ethylene glycol-2,4 toluene diisocyanate reaction product to produce the partial ester which is reacted with triethanolamine and dissolved in water. Generally more than one mole of maleic anhydride &c. is reacted per mole of fatty acid ester and the molar ratio of maleic oil to polyol in step (ii) is between 1 and 2.
Patent GB-1003257-A (GB)
Title: Improvements in or relating to combustion chambers for internal combustion engines
Inventor: WESLAKE HENRY
IPC: F02B1/04
Filed: 1962-06-27
Abstract: 1,003,257. Combustion chambers. WESLAKE PATENTS INVESTMENTS Ltd. Sept. 25, 1963 [June 27, 1962], No. 24758/62. Heading FIB. The wall of a combustion recess in the cylinder head has a projection 70 extending between the inlet and exhaust ports 18, 19, the remainder of the wall 24, 25, being without projections and shaped so that a swirl is imparted to the stream of air or mixture entering through the inlet port 18 so that the stream sweeps over the sparking plug socket 28 and then over the exhaust valve head 29. The part of the wall 23 around the inlet port 18 is undercut to assist the swirl, the port 22 around the exhaust port being similarly shaped. The fuel may be supplied by a carburetter or through a fuel injector.
Patent GB-356913-A (GB)
Title: Improved rotary apparatus for washing gravel, sand and other materials
IPC: B03B5/56
Filed: 1930-08-19
Abstract: 356,913. Washing granular materials. POOL, T. A., Carvedras, Hayle, Cornwall. Aug. 19, 1930, No. 24782. [Class 82 (ii).] Rotary apparatus for washing sand, gravel or other materials comprises a plurality of imperforate washing cylinders mounted round a common axis at equal distances therefrom, the material to be washed being fed into a cone-shaped mouth common to all the cylinders from which it is passed up the cylinders by feeding devices, e.g. spiral screws, divided screws, or inclined plates, during which passage it is washed by water sprays from perforated pipes, or pipes provided with nozzles, longitudinally disposed in the cylinders. Imperforate cylinders a, Figs. 1 and 2, arranged round a common inclined axis, are secured at their ends to plates b, the lower of which is connected by a casting c to a solid shaft d mounted in bearings e while the other is connected to a hollow shaft g mounted in bearings i and connected through a stuffing-box w to a water supply pipe v which preferably contains a strainer or filter. The hollow shaft g is rotated by means of a bevel wheel u and is provided with radial pipes p which terminate in fittings carrying perforated pipes q extending longitudinally inside the cylinders a. The material to be washed is fed through a shoot l to a cone-shaped mouth k attached to the lower plate b and passes on rotation of the apparatus through apertures in the plate b to the cylinders a up which it is carried by screws m. The apparatus may be also adapted for screening the material, in which case the cylinders a are surrounded by screens 1 and the material passes through openings n at the upper ends of the cylinders into the space between the cylinders and the screens in which it is again washed by water sprays from perforated pipes 3 connected through tubes 2 to the fittings on the water pipes p. Material passing through the screens is directed by plates 6 on to the ground or into a receptacle, larger particles being discharged at the lower end 7 of the screens. In a modification, Figs. 4 and 5, for washing only, the cylinders a are secured only to one end plate b and are open at the upper end, the water for washing being supplied by a pipe 10 to a water box 8 mounted on the casting c and provided with scoops 11 corresponding in number to the number of perforated pipes q and shaped so that as the water box rotates they pick up water and deliver it when in their highest position to the pipes q which extend from the water box into the cylinders a. The screws m may be replaced by inclined plates 16 fixed to the inner walls of the cylinders by supports 17, Fig. 6, and the cylinders may be mounted on a hollow shaft formed by arcuate shaped plates 14 separated by distancepieces 15. Specification 278,939, [Class 117, Sifting &c.], is referred to.
Patent GB-645511-A (GB)
Title: Improvements in and relating to nephelometers
IPC: G01N21/51
Filed: 1948-09-22
Abstract: 645,511. Photo - - electric turbidometers. EVANS ELECTROSELENIUM, Ltd., and COLLINS, G. C. Sept. 22, 1948, No. 24791. [Class 40 (iii)] The cloudiness of suspensions in a liquid is measured by passing light axially upward through a test tube containing the liquid, the light being collimated by the convex bottom of the tube so that the presence of suspensions, e.g. bacterial growths, causes diffusion of light to photo-cells situated around the walls of the tube. As shown, the test tube 1, here shown dotted, is maintained vertical by a bush 14 and rests in a cup-shaped recess 4 in a plate 5. Light from a lamp 3 passes through a small aperture 7 in the bottom of the recess and is collimated by the convex bottom of the tube. The presence of suspensions diffuses some of this light to six photo-cells 8 situated around the base of the tube, all these cells being connected in parallel and their output indicated on a suitable meter (hidden). The quantity of light passing through the tube may be adjusted by means of a slidable apertured plate 11 adjustable by a screw 33 and a knob 13. The cells are held between a hexagonal boss 24 on the plate 5 and a larger boss 25 on an insulating ring 19 and spaced from the plate 5 by conducting bars 17. This causes the top of the photocells to incline away from the axis of the tube so as to avoid the danger of direct illumination. The photo-cells are urged towards the axis of the test tube by leaf-springs 26 which also serve to make contact with the backs of the photo-cells, the springs being screwed to the bars 17. These bars make contact with a conducting ring 20 situated between insulating ring 19 and a further insulating ring 18 by means of the screws by which bars 17 are attached to these rings. The supporting rings in turn depend from vertical bars 21 screwed to the instrument casing. Connections to the front of the cells are made by tags 28. A domed hinged cover 15 is provided to prevent light entering the top of the tube.
Patent GB-1223147-A (GB)
Title: Improvements in or relating to microwave power supply arrangements
IPC: H03H7/25
Filed: 1968-05-24
Abstract: 1,223,147. Gunn effect oscillators. TELEFUNKEN PATENTVERWERTUNG G.m.b.H. 24 May, 1968 [27 May, 1967], No. 24845/68. Heading H3T. In a power supply arrangement having a volume effect semi-conductor device G connected to a signal source S, of predetermined microwave frequency, via a circulator Z, the semi-conductor device G is included in a circuit R which is resonant at the predetermined frequency S and controllable D.C. bias source U is connected to apply a bias to the semi-conductor device so as to control the power fed back from the device G to an output branch A of the circulator. As shown the Gunn effect device G is biased so that its resistance matches the resistance of the source S. This only allows a small part of the source S signal to be reflected from the device G to the circulator and out of branch A. If the bias voltage U is increased this increases the mismatch between the resistance of the device (which changes) and that of the source S so that more of the signal S is reflected by the device G to the output A. If the bias U is further increased above the critical value for the device G, oscillations are produced by the device. The oscillations are synchronized by the incoming microwave signal S and the output power now available at A is increased beyond that which source S can deliver. The resonant circuit R may be a cavity resonator or resonating chamber or an oscillation circuit of a strip line.
Patent GB-1471498-A (GB)
Title: Method of forming paper fibres into a desired shape
IPC: B27N3/00
Filed: 1975-06-10
Abstract: 1471498 Resin-impregnated paper fibres K W EVERS and G H LARSEN 10 June 1975 24872/75 Heading B5A [Also in Division C3] Articles such as blocks of timber substitute are made by comminuting dry waste paper in a hammer mill, screening the re-formed fibres, e.g. through a screen of mesh about # inch, mixing the screened fibres with a solution of a thermosetting resin in a solvent (e.g. a phenolic resin in water) in proportions, based on the weight of fibres, of 3 to 35% solvent and 3 to 35% resin, pressurizing the mixture in the desired form at a pressure of 3 to 600 p.s.i. while permitting solvent to escape, and baking the pressurized mixture while maintaining the pressure at temperatures between 250‹ and 375‹ F. for 3 to 30 minutes.
Patent GB-939447-A (GB)
Title: Improvements in polycarbonates
IPC: C08G64/06
Filed: 1960-07-18
Abstract: A block copolycarbonate consists essentially of blocks comprising recurring units of formula <FORM:0939447/IV(a)/1> and blocks consisting of recurring units of formula <FORM:0939447/IV(a)/2> Preferably, the number of units in any block is 3-50 and the units of the former formula are present in about 30-70 mole per cent of the block copolymer.  The copolycarbonates may be made by first making two homopolymers by reacting phosgene with 2,2-bis-(4-hydroxyphenyl) propane or bis-(4-hydroxyphenyl) diphenylmethane in the presence of methylene chloride and aqueous caustic soda, then reacting the two homopolymers in the presence of tri-n-butylamine, next acidifying the reaction mixture with acetic acid to stop the copolymerization, and finally washing the resulting viscous dope and precipitating the copolymer from solution by pouring into methanol.  The copolymers may be made into films, e.g. by casting from methylene chloride solution, which are useful in the manufacture of photographic film bases, packing materials, adhesive tape bases, kinescope recording tapes and condenser dielectrics.
Patent GB-919717-A (GB)
Title: Apparatus for the nitration of organic compounds
IPC: C07C205/24
Filed: 1960-07-18
Abstract: <PICT:0919717/III/1> A crystallizer and solvent recovery unit for use in a nitration process (see Group IV(b)) comprises two columns 71 and 72 fitted with rotating agitator blades 78 and 82.  The solution of nitration product (e.g. tetryl) in solvent is fed to 71 by line 48, and steam and water are fed through lines 91 and 89 respectively. Solvent is distilled off and taken off through pipe 49 for recovery, and the crystals of product in suspension in water pass through pipe 84 to 72 and are taken off via 53.ALSO:<PICT:0919717/IV (b)/1> Apparatus for the continuous nitration of organic compounds, e.g. for use in the process of Specification 919,718, in which the nitration products are solid, comprises a circulation loop containing a heat exchanger (e.g. 14 in the Figure), means for continuously introducing the organic compound, sulphuric acid, a nitrating agent (e.g. HNO3) and a solvent for the nitration product (e.g. the pipes intersecting at the mixing cross 19), means for recirculating the mixture (e.g. pump 10), means for withdrawing reaction mass from the loop, means for separating the waste acid from the solution of the nitration product (e.g. separator 26), and means for crystallising the product (e.g. crystallising unit 34; see Group III).  In 34 the solvent is distilled off and recovered in condenser 51 and returned to the circulation loop, and water introduced via pipe 89 carries the crystals out through 53.
Patent GB-576711-A (GB)
Title: Improvements in or relating to air regulators for pneumatic tools
IPC: G05D16/10
Filed: 1944-12-12
Abstract: 576,711. Pneumatic hammers. STEVENS, A. H. (Independent Pneumatic Tool Co.). Dec. 12, 1944, No. 24906. [Class 124] An air regulator for adjusting the hitting stroke of a pneumatic hammer comprises a body 25 in which is journalled a shaft 36 connected to an airflow controlling plunger 38 and carrying a valve 35 which is held against a seat 34 on the body 25 by means of springs 46 which also serve to hold against accidental turning a head 42 fixed to the outer end of the shaft 36. The body 25 includes threaded and tapered sections 26, 28 respectively to engage corresponding portions of an inclined bore 19 in the handle 2, and a flat-sided flange 31 for tightening in position by means of a wrench. The plunger 38 is threaded on to the shaft 36, and rotation of the shaft is converted into endwise movement of the plunger by means of keys 39 on the plunger engaging slots 40 in the threaded section 26. Two springs 46 on opposite sides of the shaft 36 press ball-checks 44 into two of a number of countersinks 45 arranged in a circle on the head 42. The end of the plunger 38 moves in a bushing 20 formed with a, plunger-stop shoulder 22, a bore 21 and ports 23 which connect the main air supply passage 5 with a cross-passage 15. Communication between the passage 15 and a port 8 leading to the distributer valve 3 is controlled by a, throttle valve 12 operated by a trigger 18.
Patent GB-1426962-A (GB)
Title: Stereo signal generator
IPC: H04H20/48
Filed: 1973-05-24
Abstract: 1426962 Stereo test signal generator GRANADA TV RENTAL Ltd 16 May 1974 [24 May 1973] 24986/73 Heading H4L In a generator for producing a multiplex stereophonic test signal comprising a carrier frequency modulated by (a) a signal representing the sum of the directional audio signals (L+R), (b) an amplitude modulated suppressed sub carrier (at 38 MHz) signal, modulated by the audio difference signal (L-R) and (c) an oscillation at half the sub carrier frequency (19 kHz pilot), use is made of a "chrominance demodulation chip", of a kind conventionally used as a colour demodulator in a TV receiver, to produce the modulated suppressed sub carrier. The chip 51 has input terminals 9, 13, to which chrominance signals would normally be applied, terminals 8, 2 to which quadrature reference carrier signals would normally be applied and terminals 7, 4 from which demodulated colour difference signals B - Y, R - Y, would normally be obtained. 6 is a power supply terminal. When used in a stereo test signal generator in accordance with the invention, an (L - R) signal is applied to a chrominance input terminal 13, while a 19 kHz signal, (derived from circuitry 31, 43, 42, 47 in which two crystal controlled oscillators at 10À719 and 10À7 MHz beat together, circuit 47 being tuned to 19 kHz) is applied to the chrominance input 9 and reference input 8. The terminals 7, 2 (normally B - Y output and reference input) are coupled in parallel to a circuit 58 tuned to 38 kHz. At the R - Y output terminal 4 of the chip, a suppressed sub carrier modulated by (L - R) is obtained, and to this is added an (R+L) audio signal applied at terminal 25. The combined signal is added to a 19 kHz oscillation via resistor 70 and the overall combined signal is applied to the emitter circuit of a transistor 69 forming part of a 100 MHz oscillator circuit. The required stereo test signal is derived at the output 84 of this oscillator. A sum and difference circuit for providing the R+L signals in response to separate R and L signals provided by a suitable source (e.g. output of suitable test tracks on a tape recording) is described (Fig. 1, not shown) and the circuit diagram of a suitable chrominance demodulation chip is given (Fig. 3, not shown).
Patent GB-1535624-A (GB)
Title: Load reduction apparatus on a pivotable bobbin support arm of an openend spinning machine
IPC: D01H4/00
Filed: 1977-06-15
Abstract: 1535624 Winding yarns MASCHINENFABRIK RIETER AG 15 June 1977 [22 July 1976] 24992/77 Heading D1J The invention relates to a winding apparatus of the kind in which a yarn package rests against a friction drive drum and is carried by a pivoted bobbin support 8. In such apparatus it is known to have a spring 11 that acts on the support 8 in a manner initially biassing the package towards the friction drive drum and, as the package increases in diameter, the spring 11 moves through settings causing its effect on the package pressure against the drive roll to reduce to zero and thereafter, in an increasing manner, to counteract the weight of the package being wound. According to the invention, such apparatus is provided with a load reducing spring element 14, Fig. 2, between the support 8 and the machine frame 9. As shown in Fig. 2 the load reducing element 14 includes a frame 15 through which extends a rod 18. On the rod 18 is a threaded nut 20 and an arm 16 of the frame 15 is a compression spring 19 that urges the rod 18 towards the machine frame 9 in a manner reducing the contact pressure between the package and the drive roll. By adjusting the setting of the nut 20 the effect of the spring 19 is variable. In Fig. 5 a flat spring 25 is used, the spring 25 being removably secured to the machine frame 9 and pressing upwardly on the bobbin support 8. A bundle of flat springs may replace the single spring shown. Slots in the spring 25 allow it to be vertically adjustable relatively to its securing means. In this manner its effect can be varied. The effect of the springs 19 and 25 reduce as the package increases in diameter.
Patent GB-1276084-A (GB)
Title: Treating comestibles
Inventor: DAVIDGE HAROLD
IPC: A23L3/365
Filed: 1968-05-24
Abstract: 1276084 Thawing frozen foods BRITISH OXYGEN CO Ltd 22 Aug 1969 [24 May 1968] 25003/68 Heading A2D Cornestibles are frozen quickly to a temperature below -73‹C by direct contact with a cryogenic liquid, stored and, when required for consumption, subjected to microwave energy to rapidly thaw and raise the temperature to a cooking or serving temperature. The freezing step is carried out by spraying or immersing the comestibles in a cryogenic fluid such as a liquefied permanent gas, i.e. liquid nitrogen.
Patent GB-256818-A (GB)
Title: Improvements in and connected with pipe joints or couplings
IPC: F16L21/04
Filed: 1925-10-08
Abstract: 256,818. Cook, H. D., and Lundgren, G. H. Oct. 8, 1925. Stuffing-box joints.-A joint or connection between two pipes a, a<1> comprises a housing b and a ring g, formed in two or more segments, having a single central integral positioning rib g', fluid-tightness being secured by means of packing rings h, h' which are compressed between the ring g and a flange b<1> at one end of the housing b and a gland c at the other end respectively. The gland may be provided with a strengthening shroud c<2> which also protects the joint, while the interior of the ring g, on each side of the rib g<1>, may be recessed and the mouth of the gland flared for permitting slight canting of the pipes.
Patent GB-296449-A (GB)
Title: A fastening device for belts, awnings, neck bands, straps and other similar uses
IPC: A44B11/02
Filed: 1928-09-01
Abstract: 296,449. Plandolit, y Bordas, D. de. Sept. 1, 1927, [Convention date]. No Paient granted (Sealing fee not paid). Chain and cord fastenings.- A chain, or cord with projections, slides over a plate 1 with an end slot 5 behind which a link or projections can be engaged to prevent slipping back. The parts 4 bordering the slot may be curved.
Patent GB-264211-A (GB)
Title: Method of winding air-spaced inductance coils
IPC: H01F17/02
Filed: 1925-10-09
Abstract: 264,211. Craig, J. Oct. 9, 1925. Air-space cables.-Wireless inductance coils are wound from wire A which has been previously provided with a coarse helix B of insulating material such as string or rubber wound helically about the wire without deforming it and without having any adhesive applied. Adjacent turns of wire A are thus air-spaced and separated by a distance at least equal to the thickness of the material B.
Patent GB-534236-A (GB)
Title: A process for the catalytic cyclisation of aliphatic hydrocarbons
IPC: C07C5/41
Filed: 1939-09-07
Abstract: 534,236. Hydrocarbons. FITE, J. G. (Naamlooze Vennootschap de Bataafsche Petroleum Maatschappij). Sept. 7, 1939, No. 25223. [A Specification was laid open to inspection under Sect. 91 of the Acts, March 16, 1940.] [Class 2 (iii)] In a process for the catalytic cyclisation of aliphatic hydrocarbons containing more than 5, and at most about 12, carbon atoms in the molecule, the hydrocarbons are contacted at temperatures between 400‹ and 600‹C. with a catalyst containing Al 2 O 3  and Cr 2 O 3  in the molecular ratios (10-40):(90-60) and also containing alkali metal compounds in such a proportion that at most 30, and preferably between 15 and 20, alkali metal atoms are present per 100 molecules of Al 2 O 3 -Cr 2 O 3  mixture. In examples, (1) n-heptane is passed over a catalyst containing the oxides in the molecular proportion of 30 to 70, to which 18 atoms of potassium (in the form of nitrate) per 100 molecules of oxide mixture is added ; the product consists largely of toluene ; (2) n-nonane is passed over a similar catalyst ; the product consists chiefly of α-methylethylbenzene, with a smaller proportion of aromatic hydrocarbons with less than 9 carbon atoms in the molecule.
Patent GB-188855-A (GB)
Title: Improvements relating to electric welding or the fusion-deposition of metals
IPC: B23K35/30
Filed: 1921-09-23
Abstract: 188,855. Quasi-Arc Co., Ltd., and Strohmenger, A. P. Sept. 23, 1921. Uniting by fusion.-In uniting metals by fusion deposition, particularly bv the process described in Specifications 1274/12, 11079/12, and 13538/14, the core of the flux-coated electrode consists of chromium steel or iron, which produces a deposit retaining the greater part of the chromium content and so forming either a hard or a tough joint either with or without subsequent heat treatment. The core, when subsequent heat treatment is required, contains about 10-12 per cent of chromium and 0.5 per cent of carbon. A tough deposit may be produced without heat treatment from an electrode in which the core contains 0.1 per cent of carbon. The core is provided with a flux coating, preferably by first passing through a bath of sodium silicate, then winding thereon blue asbestos yarn, with or without the inclusion of an aluminium wire, and finally passing through a bath containing basic material such as clay and lime in suspension. To obtain welds of high tensile strength and toughness, the deposit may be first annealed at about 820‹ C. for about 45 minutes, and then cooled slowly from 820‹ C. to 550‹ C. at the rate of about 6‹ C. per minute, followed by further cooling in air. A hard deposit is obtained by heating to about 850‹ C. and then quenching in oil. The process described in Specifications 106,928 and 110,253, [both in Class 72, Iron &c.], for reinforcing worn railway and tramwav rails may be used for this purpose. Welding with an electrode of No. 10 gauge is effected preferably with a current of about 90-95 amp. on account of the high resistance and poor conductivity of the electrode. An electrode twelve inches or less in length is preferably used, if welding is continuous, in order to prevent overheating thereof.