baber/WOPTO huggingface dataset:
Patent GB-724838-A (GB)
Title: Improved air-heating stove burning liquid fuel
IPC: F24C5/02
Filed: 1953-04-16
Abstract: 724,838. Supplying liquid fuel to buruers. LARSSON, I. E., and MEJYR, E. O. April 16, 1953 [April 18, 1952], No. 10398/53. Class 75 (1) In an air heating stove, liquid fuel is supplied to a burner 1 from a reservoir 4 disposed at a lower level by air pressure applied to the reservoir through a pipe 10 from an air chamber 9, the pressure therein being raised by heat from the burner 1 located below it. and the flow of hot combustion gases from the burner 1 to the exterior of the chamber 9 is controlled by a thermostatic valve 8 so as to maintain constant the temperature and pressure of air in the chamber 9.
Patent GB-901044-A (GB)
Title: A gas turbine combustion chamber
IPC: F23R3/00
Filed: 1959-03-25
Abstract: 901,044. Generating combustion products under pressure. ZAVODY V.I. LENINA PLZEN NARODNI PODNIK. March 25, 1959 [March 25, 1958], No. 10409/59. Class 51(1). A gas-turbine combustion chamber has a combustion chamber lining of cylindrical or conical shape formed by a number of segments on which are mounted longitudinal cooling fins and supporting rings comprising plates, each welded to at least two fins, each plate being formed of two axially offset parts and an oblique connecting part. The thermal stresses in cooling fins 2 are relieved by radial slots 7. Adequate rigidity is provided by joining each fin to its adjacent fins by plates 3 and the gaps 6 between the plates 3 are disposed over the slots 7. Cooling air is admitted to the combustion zone through gaps 8 between the segments which may have a ceramic lining 9. The segments are mounted on pins sliding in sleeves, the pins being urged radially outwardly by springs. The pin in each suspension 4 has sufficient clearance in a hole at the bottom of the sleeve to allow for radial and circumferential displacement, whereas each suspension 5 allows only for radial displacement.
Patent GB-666689-A (GB)
Title: Improvements in or relating to magnetrons for short or ultra-short wave working
IPC: H01J25/587
Filed: 1948-04-14
Abstract: 666,689. Magnetrons. COMPAGNIE GENERALE DE TELEGRAPHIE SANS. FIL. April 14, 1948 [April 18, 1947], No. 10412/48. Class 39 (i). A magnetron of the type wherein an anode surrounding a cathode comprises a plurality of segments separated by slits communicating with individual cavities or opening into a single cavity is characterized in that the segments are made of a cross-sectional shape approximately coinciding with the shape of the lines perpendicular to the field of the wave of a predetermined mode of operation; this secures stable operation in the selected mode, e.g. the # mode. The segments P may be of approximately hair-pin shaped cross-section and in a multicavity magnetron may extend into the. anode to a point where the electric field is sub - stantially zero; alternatively they may be terminated at a, a<SP>1</SP> by cavities which may be cylindrical, as in Fig. 3, which shows a developed diagram, or may be in the form of a trapezium, Fig. 4 (not shown), the cavities having a suitable reactive impedance. The invention may also be applied to the imbricated segment type of magnetron, Fig. 5 (not shown), when the segments are preferably tapered in the direction of the cathode; the segments may be solid or hollow. In either type of magnetron the cathode may have a flattened cross-section, the anode having a similar contour, Fig. 6 (not shown).
Patent GB-706711-A (GB)
Title: Improvements to froth flotation processes
IPC: B03D1/008
Filed: 1951-05-03
Abstract: A method of froth flotation comprises adding to a mineral pulp a small quantity of a collector and a small quantity of a frother, the frother comprising at least one substituted hydrocarbon nucleus of 3-10 carbon atoms in straight chain, branched chain, or cyclic structure, from 3-6 of the hydrogen atoms being substituted by any of the alkoxy groups methoxy-, ethoxy-, normal-propoxy-, isopropoxy-, methoxy-ethoxy-, ethoxy-ethoxy-, attached by ether linkage.  The cyclic hydrocarbon may be monocyclic, e.g. benzene ring.  A double-bonded oxygen atom may be attached to a nucleus carbon atom, preferably a carbon atom, having an alkoxy group attached.  Examples of the frother are: 1, 2, 3-triethoxypropane, 1, 2, 3, 4-tetramethoxybutane, 1, 1, 3, 5, 7, 9-hexamethoxydecane, tetraethylether of pentaerythritol, ethyl-b -b  diethoxy butyrate, 1, 2, 3-trimethoxybenzene, and 1, 3, 5-trimethoxybenzene. Specifications 641,932, 662,122, 665,420 and 680,802 are referred to.
Patent GB-270275-A (GB)
Title: Packings for shafts
IPC: F16J15/38
Filed: 1927-04-19
Abstract: 270,275. Volet, R. A. L. April 29, 1926, [Convention date]. Stuffing-boxes, substitutes for.-A stuffing- box substitute of the rubbing-collar type comprises a sleeve h which is maintained by a spring l against a nut g on the shaft a of a turbine b. The sleeve has projections k slidably engaging grooves j in the casing e. The spring d abuts against a ring m under the influence of the fluid pressure of the turbine. The sleeve is self-lubricating, being constructed of graphite and a synthetic resin, and is packed externally by annular disc washers o, p.
Patent GB-105629-A (GB)
IPC: B61H15/00
Abstract: 105,629. Hayward, A. E. April 25, 1916. Compensating for wear.-Means for taking up slack in vehicle brake mechanism comprises an inclined rack such as m secured to one member of the mechanism and engaged by a pin a<4> on another member whereby, in releasing the brakes, if the slack is excessive, the pin becomes disengaged from a tooth and the rack falls to engage the next tooth with the pin. According to the arrangement shown, the rack is secured to the pull-rod e connected to the crank f<1> on the hand-lever shaft f, and the pin a<4> is on the arm a<3> rigid with the rock-shaft a carrying other arms a<1>, a<2> to which the brake ruds d are connected. A spring o returns the rack m and members e, f to normal positions upon release of the hand-lever j. In a modification, Fig. 4, the rack t is curved and is pivoted at t<1> to the pull-rod r<2> which works in a guide s. Means for locking the brakes on may comprise a rack i free partially to rotate in one direction upon the hand-lever shaft f and caused to rotate with this shaft in applying the brakes by the engagement of an arm k on the shaft f with a flange i<1> on the rack. A pawl l engages the rack and is adapted to be tripped by the arm k to unlock the mechanism.
Patent GB-309148-A (GB)
Title: Improvements relating to dyeing or colouring varnishes, waxes, fats, oils and higherfatty acids
IPC: C08K5/00
Filed: 1929-04-05
Abstract: 309,148. I. G. Fanbenindustrie Akt.- Ges. April 5, 1928. [Convention date]. Waxes; fats; fatty acids.-Waxes, fats, oils, and higher fatty acids are coloured by dissolving in the molten or normally liquid material a mordant dyestuff free from sulphonic or carboxylic groups and converting the dyestuff into a complex metal salt during or after the operation of dissolution by means of a metal salt of an organic acid in absence of water, and, in some cases, in presence of an organic derivative of ammonia. The metal salt is preferably of an organic acid of high molecular weight such as a higher fatty acid, a resin acid, or a naphthenic acid. In examples : (1) Linseed oil is coloured yellow-brown by dissolving the azo dyestuff 4- nitro-2-aminophenol 1-phenyl-3-methyl-5-pyrazolone and cobalt stearate in the warm oil. (2) Carnauba wax is coloured a uniform blue-red by dissolving the azo dyestuff 3:5-dichloro-2- aminophenol 2-naphthol and copper naphthenate in the molten wax. Specifications 294,137 and 299,790 are referred to. The Specification as open to inspection under Sect. 91 (3) (a) includes also the following example. A mixture of stearin and ceresin is coloured a red-violet, fast to light, by dissolving the cobalt salt of the azo dyestuff 4- chloro-2-aminophenol 2-naphthol and triethylolamine in the mixture heated to 90‹ C. This subject-matter does not appear in the Specification as accepted.
Patent GB-933758-A (GB)
Title: Glandless solenoid valve
IPC: F16K31/06
Filed: 1962-03-20
Abstract: 933,758. Electromagnets. ELEMAG-ANSTALT. March 20, 1962 [March 20, 1961], No. 10647/62. Class 35. [Also in Group XXIX] A glandless solenoid valve comprises a valve member 7 connected to an armature plunger 18 operated by an energizing winding 24, the plunger being loaded in the closing direction of the valve by an adjustable spring 46 disposed inside a hollow magnetic core or polepiece 36, an axial air gap " S " between the plunger and the polepiece being adjustable, and the plunger being sealed off from the controlled fluid by a bellows 22. The spring is adjustable by an abutment 47 screwed into the core 36 and the core itself by screwed engagement with the solenoid casing. The plunger is guided in a brass sleeve 35 which extends half way up a former 30 from the bottom thereof.
Patent GB-269909-A (GB)
Title: Improvements in or relating to treating residual liquors accruing from the treatment of cellulose material
IPC: D21C11/02
Filed: 1927-04-21
Abstract: 269,909. Barbou, P. A., and Delvaille, R., (trading as Soc. Barbou et Cie.). April 21, 1926, [Convention date]. Waste products, treatment and utilization of.- The lye obtained in the manufacture of cellulose for making paper, artificial silk, &c. by boiling cellulosic material with sodium sulphite is treated to regenerate sodium sulphite for use again. The lye is treated with an alkaline earth base such as lime to precipitate calcium sulphite. The residual liquid is treated with calcium bisulphite, which may be formed by solution of the precipitated calcium sulphite in sulphur dioxide solution or with bisulphites of other alkaline-earth metals or of magnesium, aluminium, or manganese to precipitate an organic metal compound, and to yield a liquid containing sodium bisulphite which is neutralized with caustic soda to form a solution of sodium sulphite.
Patent GB-527279-A (GB)
Title: Improvements relating to valves for pneumatic tyre tubes
IPC: B60C29/00
Filed: 1939-04-06
Abstract: 527,279. Tyre valves. DUNLOP RUBBER CO., Ltd. April 6, 1939, No. 10742. Convention date, April 9, 1938. [Class 135] A tyre valve of the kind having a rubber stem provided with a metal insert which houses the valve mechanism and projects from the stem to provide a screwed nipple has detachable securing means arranged between the metal insert and the wheel rim to retain said stem in its correct position. In the form shown the securing means comprises a cap 18 adapted to fit the stem 11 closely or not as desired. The cap has a flange 19 at the bottom to engage the wheel rim and an interrupted flange 20 at the top adapted to co-operate bayonet-joint fashion with an interrupted flange 21 on the metal insert 12. The insert has a continuous flange 22 abutting the. end of the stem. The securing means may be screwed on to the nipple 13 or may be formed in one piece with the dust cap.
Patent GB-1564078-A (GB)
Title: Dipeptide derivatives
IPC: A61P25/26
Filed: 1977-03-15
Abstract: The compounds correspond to the formula: <IMAGE> in which the symbols R1 to R5 have the meanings given in Claim 1. The preparation is effected by forming the amide bond in accordance with one of four process variants, starting from amino compounds of the formulae: <IMAGE> and the carboxylic acid corresponding in each case to the remainder of the molecule. The reaction is also carried out using functional derivatives of the carboxylic acid or with the 1 and 3 positions of the imidazole group in the histidyl residue being temporarily protected. The compounds show a spectrum of activity which is similar to that of thyrotropin-releasing hormone, but with a longer duration of activity and a stronger stimulatory effect on the central nervous system; they can be used therapeutically as psychostimulants and as antidepressants.
Patent GB-454867-A (GB)
Title: Improvements in belt-conveyor supports
IPC: B65G39/00
Filed: 1935-04-08
Abstract: 454,867. Endless - belt conveyers. ROGERS, J. N. O., Manor House, Penshaw, and CHARLTON, T., High Newport Farm, Silksworth, both in Co. Durham. April 8, 1935, Nos. 10845/35 and 7987/36. [Class 78 (i)] A conveyer belt support comprises a base or mounting provided with ball or swivelling roller devices for carrying the belt. In one construction, the belt c Fig. 1, rests on balls d which are caged in socket fittings e attached to a metal bar a. The ends of the bar are supported on arched angle-bar feet b which are fastened down by spikes. The foot at one end may be dispensed with, and a U- shaped stirrup applied to this end which has loops at the ends of the arms through which a wedge may be driven to secure the support to a pit prop. The balls may be arranged in rows and in staggered disposition. In another construction the sockets e are mounted along the crown of a steel pressing n, Fig. 6, of inverted channel or semicircular section. One end of the pressing is flattened and disposed to fit snugly at o against a prop m. A packing piece p placed in a slot at the end is threaded to receive the screw s of a clamp u. The jaw of the clamp is attached to a sleeve t against which bears a shoulder w on the screw. Alternatively a hooked bolt, or a hooked bracket, may be used for fastening the pressing n to a girder prop. In a further construction the balls are replaced by rollers 26, Fig. 9, carried by a swivelling frame 23 which turns about a vertical pin 24. Balls 27 or rollers 28 may be placed between the frame 23 and the base 25. Specification 404,694 is referred to.
Patent GB-690012-A (GB)
Title: Improvements in or relating to the separation of sulphur from gaseous mixtures containing sulphur vapour
IPC: C01B17/02
Filed: 1951-05-09
Abstract: Liquid sulphur is recovered from a hot gaseous mixture containing sulphur vapour by flowing the mixture through cooled channels at a rate such that the Reynolds number is between 2,300 and 10,000, this condition ensuring a moderate turbulent flow in the gaseous mixture whereby the liquid sulphur particles in the mixture are brought into contact and retained by the liquid sulphur layer on the cooled channel walls, without causing turbulence of this layer.  The separation is preferably effected by employing a plurality of passages each having a vertically elongated cross section and through which the mixture flows horizontally.  Such horizontal flow passages may alternate with vertical passages for a cooling liquid, such as water whereby under a pressure of 3 to 5 atmospheres cooling to 115-150 DEG C is attained.
Patent GB-1381207-A (GB)
Title: Ketones
IPC: C07C45/00
Filed: 1973-03-09
Abstract: 1381207 Unsaturated ketones L GIVAUDAN & CIE SA 9 March 1973 [10 March 1972] 10949/74 Divided out of 1381205 Heading C2C Ketones of the general formula wherein A is -CH 2 -C(=CH 2 )CH=CH 2  or -CH=C(CH 3 )-CH=CH 2 , are prepared by reacting a vinyl carbinol of general formula with an enol ether CH 2  = C(CH 3 )-C(OR<SP>1</SP>) = CH 2  or a corresponding ketal where R<SP>1</SP> is an oleyl group, in the presence of an acid catalyst.
Patent GB-1501295-A (GB)
Title: Arrangements for covering wells pits and the like
Inventor: AXGAERDE G
IPC: E02D29/14
Filed: 1975-03-17
Abstract: 1501295 Manhole frames PARCA-NORRAHAMMAR AB 17 March 1975 [19 March 1974] 10965/75 Heading E1G A cylindrical or square frame 5a for a manhole cover is telescopically and tiltably supported within a fixed frame 2 by inclined clamping screws 7 threaded in the wall of frame 5a and engaging surfaces in the fixed frame 2 which are perpendicular to the respective screw axis and inclined to the manhole axis. As shown the screws 7 engage respective vertical grooves 2c in the frame 2.
Patent GB-498450-A (GB)
Title: Improvements in or relating to processes of concentrating minerals from their ores
IPC: B03D1/004
Filed: 1938-04-11
Abstract: A sulpho-fatty acid compound produced by the action of a sulphonating agent on a free unsaturated fatty acid containing at least 12 carbon atoms is used as a collecting agent in ore concentration.  The compound may be wholly or partially neutralized with a base such as sodium hydroxide or pyridine.  For example, oleic acid in the form of red oil may be sulphonated by stirring with 5, 10, or 25 per cent of its weight of concentrated sulphuric acid; linoleic acid and ricinoleic acid may be treated similarly with 10 and 5 per cent respectively of sulphuric acid; erucic acid may be melted and stirred with 5 per cent of sulphuric acid; the stirring in each case being continued until the mixture is cool.ALSO:The separation of minerals from their ores is effected by mixing an aqueous pulp of the ore with an insoluble and unsaponifiable oil, e.g. fuel oil, and a sulpho-fatty acid compound produced by the action of a sulphonating agent on a free unsaturated fatty acid containing at least 12 carbon atoms, and then subjecting the pulp to a separating treatment such as froth flotation, tabling, or hydraulic classification.  The sulpho-fatty acid compound produced as set out above may be wholly or partially neutralized with an alkali such as sodium hydroxide or pyridine.  For example, oleic acid in the form of red oil may be sulphonated by stirring with 5, 10, or 25 per cent of its weight of concentrated sulphuric acid; linoleic acid and ricinoleic acid may be treated similarly with 10 and 5 per cent respectively of sulphuric acid; erucic acid may be melted and stirred with 5 per cent of sulphuric acid; the stirring in each case being continued until the mixture is cool.  The process is described with reference to the concentration of both metallic and non-metallic minerals, copper sulphide ores, oxidized copper ores, calcium phosphate ores, limestone ores, barite ores, fluorspar ores, and kyanite being specifically referred to.  The ore is preferably deslimed, and the pulp may be made alkaline, e.g. with lime; when concentrating by froth flotation, a frother such as a solution of crude rosin residue in kerosene may be added.
Patent GB-1449793-A (GB)
Title: Spring assembly of a seat
IPC: A47C31/04
Filed: 1975-03-17
Abstract: 1449793 Spring upholstery DAIMLERBENZ AG 17 March 1975 [27 March 1974] 11046/75 Heading A4M A wire spring 2 with a U-shaped end loop 4 comprising limbs 5, 6 joined by an arcuate web 7 is secured to a seat frame 1 by first passing the end loop 4 through an opening defined by a bridge-like strap 3 pressed out of the frame 1 until it engages on abutment 8 pressed out of the frame 1 and then pressing in the strap 3 between the limbs 5, 6 so that the strap 3 embraces each of the limbs 5, 6 on both sides. The free limb 6 is bent outwardly, from its initial, unstressed condition lying parallel with the other limb 5, during the pressing in of the strap 3 between the limbs 5, 6. In another embodiment Fig. 3 (not shown) the strap (3a) extends obliquely in relation to the limbs 5, 6.
Patent GB-544339-A (GB)
Title: Improvements in variable pitch airscrews
IPC: B64C11/42
Filed: 1940-07-01
Abstract: 544,339. Variable-pitch propellers. DE HAVILLAND AIRCRAFT CO., Ltd., and WARDE, R. H. July 1, 1940, No. 11105. [Class 114] A variable-pitch airscrew is controlled for normal pitch changes by a speed governor 29 which may actuate a valve 32 regulating the liquid supply to a jack while for abnormal changes such as feathering a mechanism is employed outside the hub and comprising a pump 21 supplying liquid at a pressure overriding the constant speed control and valve means 42 supplying liquid to either end of the jack through separate passages. For feathering, a button 24A is pressed, starting the motor 22 of the pump 21, and the pump forces the valve 42 inwards until its end closes a passage 44 and traps liquid in the end of the valve casing, escape being prevented by the closed valve 45. Liquid then passes through an aperture in the valve to open a valve 47 uncovering a port 37 to allow feathering liquid to pass to the jack, liquid from the other side of the jack returning through passages 49, 30. When feathering is completed, the rise in pressure opens a switch 25, stopping the pump. Unfeathering is effected by turning a lever 33 which alters the governor loading and the position of the valve 32, and simultaneously turns a cam 55, releasing the hydraulic lock valve 45. On starting the motor 22, the pump forces the valve 42 to the end of its stroke, liquid escaping past the valve 45, and the pumped liquid passes through the valve 42 to the passage 44 opening the valve 40 and flowing through the passage 49 to operate the jack. At the same time this position of the valve 32 allows return of liquid from the passage 37 connected with the other side of the jack.
Patent GB-795282-A (GB)
Title: Improvements in or relating to electric discharge tubes
IPC: H01J31/06
Filed: 1955-04-19
Abstract: 795,282. Discharge apparatus. PHILIPS ELECTRICAL INDUSTRIES, Ltd. April 19, 1955 [April 22, 1954], No. 11265/55. Class 39(1). A trochotron with a plurality of anodes 13-22 lying opposite the gaps between primary auxiliary electrodes 2-11, is provided with a plurality of secondary auxiliary electrodes 23-32 in the said gaps, each connected to the next primary auxiliary electrode in the direction of beam rotations. The beam from the cathode 1 when in its state of rest strikes partly a spade electrode 2 and partly an anode, and the secondary electrode 24 at that point takes up to 5 per cent of the beam current the secondary electrode may be shaped as a tag of the following spade as shown. Each spade is connected by a resistor of 100,000 ohms to a common source of +100 V. The magnetic field 350 Gaurs is parallel to the cathode. The anodes are connected through separate resistors 33 to a source of +200 V. By operating a switch 36, the annular conductor 12 is connected to earth, i.e., the cathode potential, pulsing the spade electrodes by -100 V. and causing the transfer of the beam in a clockwise direction. The presence of secondary electrodes taking a small current enables a smaller pulse voltage to be used and tends to avoid jumps of more than a single gap. The secondary electrodes may be plates separate from the primary spade electrodes which may also have various shapes, e.g., curved or straight and radially arranged. The anodes may be a unitary cylinder ; and there may be a screen arranged between the anodes and the auxiliary electrodes with gaps opposite the anodes.