baber/WOPTO huggingface dataset:
Patent GB-818095-A (GB)
Title: Process for the production of readily dispersible silicic acid fillers
Inventor: PODSCHUS ERNST
IPC: C01B33/193
Filed: 1956-09-28
Abstract: <PICT:0818095/III/1> Well-dispersible silicic acid fillers having a particularly uniform particle size are obtained by reacting alkali-metal silicate solutions with acids or acid-reacting substances with intensive mixing under the action of the high shearing forces, in a precipitation vessel which is small compared with the total quantity of the reaction mixture.  The reaction mixture, which is stored in a larger vessel, is continuously circulated through the precipitation vessel by pumping for the duration of the reaction. The rates of pumping and addition of acid are such that the difference in alkali-metal oxide contents of the solution entering and leaving the precipitation vessel is less than 10 per cent, and preferably less than 3 per cent, referred to the alkali-metal oxide content of the starting solution; the whole volume of the solution is circulated through the precipitation vessel at least ten times before the precipitation of the silicic acid is complete.  The ratio of the volume of the precipitation vessel to that of the reaction mixture lies between 1 to 2 and 1 to 100, preferably between 1 to 4 and 1 to 20.  In the preferred embodiment (Fig. 2), the mixing is carried out in the precipitation vessel i by means of a Kotthof mixing mill, consisting of rotors working within a stator d supported by rods b and an acid feedline h.  The alkali metal silicate solution, with a Na2O : SiO2 ratio of 1 : 3.3, and which may contain a neutral salt, is pumped at 7 DEG  C. from the storage vat k by pump l through the vessel i, and then overflows through m back to k. The acid, e.g. 3N hydrochloric acid, is preferably introduced at constant rate, via line h which ends just above the rotor of the mixing mill.  Depending upon the size of the particles, the product may be used for rubber reinforcing fillers, e.g. 12-35 millimicrons, as a white pigment in, for example, size and short oil emulsion paints, e.g. 25-200 millimicrons, and especially paper.
Patent GB-420120-A (GB)
Title: Improvements in or relating to the undercarriage of aircraft
IPC: B64C25/14
Filed: 1933-10-26
Abstract: 420,120. Retractable undercarriages. FAIREY AVIATION CO., Ltd., Cranford Lane, Hayes, and ORDIDGE, F. H., Soircroft, Croft Gardens, Ruislip, both in Middlesex. Oct. 26, 1933, No. 29737. [Class 4] In a retractable undercarriage for an aircraft the members by which the landing-wheels are carried are arranged to turn about axes in the same direction as their longitudinal axes, so that the wheels, when stowed, lie substantially in the plane of and within the depth and thickness of the wing. The lower element 11 of a shock-absorbing strut is articulated to a stub-axle bracket 12 for a wheel 13 and pivotally connected with the outer end of a strut 15 pivoted at its inner end to the aircraft structure. The upper element 17 of the shock-absorber is pivoted to the aircraft so that it can be swung up or down in a fore-andaft direction and has a bevel pinion 19 rotatably mounted thereon which gears with a bevel pinion 20 fixed to the aircraft and concentric with the pivot for the element 17. The pinion 19 can be coupled at will, to turn the wheel 13 through 90‹ when the elements 11, 17 are swung up or down, by a removable pin 22 to a collar 21 rotatable on the element 17 and slidable upon a square or splined rod 23 rigidly connected with the element 11. A link 25 is pivoted to a rotatable collar 24 on the element 11 and to a cross-bar 28, the ends of which are pivoted to the lower ends of two struts 29, the upper ends of which are pivoted to the aircraft structure. The landing-wheel is retracted hydraulically or pneumatically through a cylinder 30 pivotally attached to the aircraft and a ram rod 29<a> attached to the cross-bar 28. In a modification, the strut 15 may be omitted, or is pivoted to the upper element 17, the landing-wheel being carried by a fork attached to the lower element 11 and the link 25 is replaced by a bifurcated strut, the outer ends of which are pivoted to the cross bar 28. The bevel quadrants may be replaced by an arm projecting from the inner element of the shock-absorber and coacting with a fixed tripping element and in this case a spring-loaded catch, operable from the cockpit, is provided to prevent rotation of the wheel when contacting with the ground, about the shock-absorber axis.
Patent GB-192509-A (GB)
Title: Improvements in and relating to fertilizer distributers
IPC: A01C23/04
Filed: 1921-11-08
Abstract: 192,509. Buckner, W. A. Nov. 8, 1921. Garden-engines and crop-sprayers.-Apparatus for distributing fertilizers by means of a stream of water comprises a container for the fertilizers, means for conveying water directly to a sprinkler, and means for diverting a predetermined proportion of the water through the container and thence back to the main current. The receptacle 10 is fitted with an inner perforated receptacle or wire basket 12 raised above the bottom 14, and with a cover 18 secured by means of a bar 17 and screws 21, 22. The bar 17 passes through a slotted lug 20 on the cover and under bent ears 16 on the receptacle 10. A water-supply pipe 25, 27 is connected to the lower part of the receptacle through a branch pipe and valve 31 and to the upper part by a pipe 36 and valve 37. It is furnished with a main valve 30 and a coupling 28 for securing the sprinkler or hose. By means of the valves &c. part of the water supply may be passed upwards through the fertilizer in the receptacle 12 and back to the pipe 27. Specifications 18928/09 and 8912/15, [Class 81 (i), Disinfecting &c.], are referred to.
Patent GB-1073665-A (GB)
Title: Improvements in electrolytic apparatus
Inventor: EVANS DAVID JOHNSON
IPC: C25B9/17
Filed: 1965-07-15
Abstract: <PICT:1073665/C6-C7/1> In an electrolytic cell as described in Specifications 932,945 and 1,026,115 comprising a plurality of thin sheet electrodes which are mounted to form a stack inclined at an angle to the vertical and comprise either platinum coated titanium or metal formed on one face with nickel, nickel alloy, rhodium or iridium; the top of the cell is provided with a vent for the escape of hydrogen and means are provided whereby the flow energy of treated electrolyte leaving the cell is used to withdraw hydrogen from the cell through said vent.  The cell shown comprises an electrode stack 18, electrolyte inlet 14, electrolyte outlet 15 and hydrogen vent 16. Pipes 25 and 26 leading from electrolyte outlet 15 and hydrogen vent 16 respectively are connected at an acute angle such that hydrogen is drawn through the pipe 26 and into the stream of treated electrolyte by means of the flowing electrolyte.
Patent GB-1077377-A (GB)
Title: Improvements in or relating in ferro-magnetic core laminations and process for production thereof
Inventor: MCMILLAN PETER WILLIAM
IPC: H01B3/08
Filed: 1963-07-30
Abstract: Ferro-magnetic core laminations for electrical apparatus are provided with a coating of glass or glass-ceramic, the coating being fired on and having a coefficient of linear expansion lower than that of the laminations so that, on cooling after firing, the laminations are stressed in tension.  The glass composition may be within the following range of percentages by weight: .SiO2.30.0-65.0 .B2O3.0-25.0 .Al2O3.0-15.0 .ZnO.0-14.5 .BaO.0-36.0 .MgO.0-4.0 .CaO.0-10.0 .K2O.0-11.0 .Na2O.3.5-19.5 .Li2O.0-2.4 .CoO.0-0.5 .NiO.0-0.5 the total divalent metal oxides being within the range 5.5-50.5% and the total monovalent metal oxides being within the range 11.0-20.0%.  The glass is formed into frit which is powdered and added to water with an anti-setting agent or methylated spirits to form a suspension.  Aluminium oxide, zirconium oxide or calcined clay may be added to the suspension which is applied to the laminations by spraying or dipping. Alternatively, dry glass powder may be applied to the laminations electrostatically.  The laminations may be of 3% silicon iron and may be fired whilst stacked together, possibly in a reducing or non-oxidizing atmosphere so that the powder coating may be fused and bond the laminations together, the temperature being chosen, if desired, so that annealing of the laminations is also effected. Six examples using varying glass compositions and melting and firing temperatures &c., and giving different tensile stresses in the laminations, are described.
Patent GB-1452000-A (GB)
Title: Metallic tone coating composition
IPC: C09D5/10
Filed: 1974-07-08
Abstract: 1452000 Metallic pigments for coating compositions MITSUI TOATSU KAGAKU KK 8 July 1974 [7 July 1973 16 July 1973] 30212/74 Heading C3P  A metal powder encapsulated within and bonded chemically to a polymer is used as a pigment in either a powder coating composition comprising an acrylate or methacrylate ester copolymer having a Tg#20‹ or a solution or dispersion of a coating resin. The encapsulated metal powder is made by polymerizing an ethylenic monomer or monomer mixture on to cleaned particles of metal using conventional free radical initiators.
Patent GB-1478338-A (GB)
Title: Catalytic oxidation of diarylmethane and triarylmethane compounds
IPC: C09B11/26
Filed: 1974-07-09
Abstract: 1478338 Catalytic oxidation of di- and triarylmethanes BASF AG 9 July 1974 [10 July 1973 7 June 1974] 30294/74 Addition to 1395627 Heading C4P In a process for the preparation of di- and triarylmethane dyes by the catalytic oxidation of compounds of the formula (where Z<SP>1</SP>, Z<SP>2</SP>, Z<SP>3</SP> and Z<SP>4</SP> independently are H or optionally substituted alkyl, cycloalkyl, aralkyl or aryl or Z<SP>1</SP> and Z<SP>2</SP>, or Z<SP>3</SP> and Z<SP>4</SP>, together with the N atom to which they are linked form a heterocyclic ring; Z<SP>5</SP> and Z<SP>6</SP> independently are H 1  halogen, alkyl or alkoxy; and Z is H or an optionally substituted aryl or heterocyclic radical), a compound of the above formula is treated with a fluorine-, bromine- or cyanosubstituted benzoquinone or with a nitrosubstituted phenanthrenequinone in the presence of oxygen and a catalyst of formula wherein R<SP>1</SP> and R<SP>2</SP> are each H or CH 3  or together form a fused-on, optionally substituted carbocyclic or heterocyclic ring or ring system; R<SP>3</SP> and R<SP>4</SP> are each H, CH 3  or phenyl; and T is H or D-N = N- in which D is the radical of a diazo component, the complex optionally also containing carried oxygen chemically bound therein. The substrates (I<SP>1</SP>) are described in detail in Specification No. 1,395,627. D may for example be a radical of the benzene, benzthiazole, benzisothiazole, thiazole, thiadiazole, thiophene, triazole, indazole or pyrazole series. The preparation of (I) wherein T is H is described in Specification 1,435,760. (I) wherein T is D-N = N- are prepared from D-N = NCH(CHO) 2  (II) and diamines of the formulae in the presence of an iron donor. (II) are prepared for example as follows wherein A is an anion and R is C 1-4  alkyl. Examples describe the preparation of Crystal Violet, Methyl Violet, Ethyl Violet and Malachite Green.
Patent GB-384758-A (GB)
Title: Means for operating rotating wings or rotors of aircraft
IPC: B64C27/02
Filed: 1931-11-02
Abstract: 384,758. Starting rotary-wing systems. POBJOY, D. R. and POBJOY AIRMOTORS, Ltd., Hooton, Wirral, Cheshire. Nov. 2, 1931, No. 30374. [Class 4.] For connecting an aircraft engine to rotating wings, for example at starting, a ratchet clutch is moved by a lever which releases a brake on the rotor shaft before effecting the engagement of the clutch and releases the clutch before braking the rotor shaft. Should the rotor shaft overrun the engine shaft the ratchet teeth of the clutch enable slipping to take place. Two clutch members 54, 55 are normally held apart by oil pressure acting on a spigot 61, the part 55 being carried on a sleeve 56 splined to a shaft 58 having a bevel wheel 60 in mesh with a bevel wheel 8 on a vertical shaft carrying a sun pinion 6, Fig. 3. A lever 65 moves the shaft 56 to engage or disengage the clutch and is actuated by a rod 66 connected through interposed springs to a lever on a vertical shaft 48. The sun pinion 6 meshes with three planet pinions 9 carried by shafts on a disc connected to the rotor shaft 16, and provided with a brake drum. A second brake drum 2 is provided on a member having upper and lower rows of internal teeth meshing with toothed members 12 on the pinions 9. This drum has a brake band 19 tightened by pins on the ends of levers 26, 27 linked together at 28 and normally forced apart at their outer ends by springs 35, 36 in cups 31, 32. These cups are pressed together to free the planetwheel carrying-member by levers 38, 39 engaging cams 45, 46 on the shaft 48 which is provided with a hand-lever and locking quadrant. A band brake on the rotor shaft drum is actuated by levers 51, 52, Fig. 1, on the upper end of the shaft 48 and is released as the brake 19 is applied to render the epicyclio gear effective. In the neutral position of the lever both brakes are off, and when moved to start the rotor the clutch is engaged before the brake 19 becomes tight. According to the Provisional Specification the clutch is engaged when the rotor brake is applied, and when the hand-lever is moved in the opposite direction to lock the planet carrier and release the rotor brake the clutch lever, which has a lost-motion connection to the hand-lever, is left behind.
Patent GB-1469303-A (GB)
Title: Process for producing rubber polymer latices with large partic les
IPC: C08C1/07
Filed: 1974-07-09
Abstract: 1469303 Synthetic rubber polymer latices RHONE-PROGIL SA 9 July 1974 [11 July 1973] 30404/74 Heading C3P A process for the preparation of synthetic rubber polymer latices having particle sizes of 0À05 to 1 micron, comprises polymerizing a conjugated aliphatic diolefin of 4-8 carbon atoms, alone or in admixture with not more than 80% by weight of at least one copolymerizable monomer, based on the total weight of the monomers, in aqueous emulsion in the presence of an agglomerating agent, wherein the agglomerating agent consists of at least one polyalkyleneglycol which is introduced at 25-90 C. when at least 40% by weight of monomer has been converted into substantially non-crosslinked polymer. The diolefin may be butadiene, isoprene, dimethylbutadiene or isoprene, and the copolymerizable monomer may be vinylaromatic compounds, acrylic and methacrylic nitriles, and alkylacrylates having an alkyl group of 1-10 carbon atoms. The chain limiter may be a mercaptan, cyclohexene or halogenated hydrocarbon. Up to 5% by weight of the polymer may comprise a bifunctional cross-linking monomer and 0À01-5% by weight, based on the monomer mixture of an emulsifying agent may be added with the agglomerating agent. A physical agglomerating means may be used. In the examples, the monomer mixtures consist of (3)-(6) butadiene and styrene, (7)-(8) butadiene and butylacrylate.
Patent GB-222813-A (GB)
Title: Improvements in fluid pressure gauges
IPC: G01L7/22
Filed: 1923-12-04
Abstract: 222,813. Republic Flow Meters Co., (Assignees of Cunningham, A. B.). Oct. 4, 1923, [Convention date]. Indicating; modifying scale of readings.-In a hydrostatic gauge of the bell type, for indicating the draught in flues and for similar purposes, a counterweight of the same cross-sectional area as the material of' the bell is arranged to dip into the liquid of the gauge so that between limits the instrument is unaffected by variations in level of the liquid; means are provided for connecting the interior of the bell to atmosphere to obtain a zero reading, and the mounting means of the apparatus is arranged so that it may be tilted to bring the indicating band to zero when being fixed. The bell 34 dips into liquid such as oil in a well 23 and is suspended by a pivot bearing 31 from a forked lever 28 which is pivoted at 27 to a fixed frame 18. To the other end of the lever 28 is pivoted at 47 a rod 48 carrying a weight 50 which also dips into the liquid in the well 23. The cross-sectional area of the weight 50 is equal to that of the material in the bell 34. A screwed rod 51 secured to the lever 28 carries adjustable counterweights 52 for balancing purposes. A pendulum rod 43 carrying adjustable weights 45 is adjustably secured by a boss 42 to the spindle of the lever 28. The action of gravity on these weights opposes the movement of the bell. Gearing 53, 54 connects the spindle of the lever 28 with the handle of the pointer 58, the boss 60 of which is adjustably secured to the spindle by screws carrying balancing weights 61, 62. The well 23 is provided with a filling elbow 24 adapted to be closed by a plug 25, and with a drain plug. The gas, the pressure of which is to be measured, is admitted to the bell 34 by a pipe 35 which is joined to the external connection 39 by a pipe 37 and a valve 38. The valve comprises a screwactuated member 75, Fig. 5, having two valvefaces 65, 67. In the position shown, the pipe 33, and the interior of the bell, are connected to atmosphere through pipe 37 and passages 70, thus enabling any oil which has passed into the pipe to run away. To make the gauge operative, the valve is screwed down so that the face 67 contacts with the valve seat 68. The members 76, 77 by which the instrument is secured to its support are provided with elongated holes so that the instrument may be tilted to adjust the pointer to zero reading. To prevent vibration of the parts during transportation a false bottom 80 is provided in the well 23. It may be moved up against the ends of the bell 34 and weight 50 by a rod 81 and fixed by a nut 84.
Patent GB-364213-A (GB)
Title: Improvements in pulverising mills
IPC: B02C15/02
Filed: 1930-10-13
Abstract: 364,213. Roller and ring mills. INTERNATIONAL COMBUSTION, Ltd., Africa House, Kingsway, London.-(Assignees of Rosencrants, F. H.; Africa House, Kingsway, London.) Oct. 13, 1930, No. 30656. Convention date, Oct. 11, 1929. [Class 59.] A pulverizing-mill includes a pendulum arm comprising an axially bored shaft, a sleeve on the shaft carrying a pulverizing roller, and lubrication is effected by a self-contained system in which the lubricant circulates around the shaft and through the bore of the shaft. A well or sump is provided at the bottom of the shaft in the circulating system so that the lubricant therein acts as a cushion at the end of the shaft when the sleeve moves upwards on the shaft. As shown, the non-rotatable shaft 7 is surrounded by a rotary sleeve 21 having a tapered bottom 35 to receive the correspondingly tapered roller 36 which is retained, if desired, by a band 37. The sleeve is closed at the bottom by a plate 32 held by bolts 33 and having a drain plug 34 with a spigot projecting into the bore of a plug 16 screwed into the end of the shaft 7. The top of the sleeve is sealed by felt washers 43 retained between a screwed gland ring 44 and a spring-pressed ring 46 prevented from rotating relatively to the sleeve by a dowel 47. Dust is excluded from the upper end of the sleeve by a skirt 25 depending from the casting 5 carrying the trunnions 4, a split sleeve 50 assisting in the dust exclusion. Oil is passed into the oil reservoir 10, 15 by removing plugs 14 from parallel ducts 13, one of which passes the oil and the other vents the air. The oil passes through openings 27 into the space 26 and is worked down between the shaft 7 and a bronze bush 29 by a helical oil groove 31 cut therein. The oil passes outwards between radially grooved washers 19 and from thence into the space between the bottom of the plug 16 and the plate 32 and upwardly into the space 10, 15. The space at the bottom of the plug may be greater than that illustrated to form a buffer. If desired, the direction of the oil flow may be reversed by reversing the inclination of the oil groove 31. Specifications 221,743,305,945,305,948, and 364,526, [all in Class 59, Grinding, crushing, &c.], are referred to.
Patent GB-316818-A (GB)
Title: Improvements in or relating to oil burners
IPC: F23C99/00
Filed: 1928-10-23
Abstract: 316,818. Dicker, S. G. S., (Bettendorf Oil Burner Co.). Oct. 23, 1928. Actuating-mechanism. - A governor-controlled valve for use in an oil burning apparatus for use in furnaces of domestic heaters comprises a rotatable fuel valve 16 which is held in the closed' position by a weighted crank 18 except when the electric motor of the blower and atomizing pump is rotating at or above a critical speed. When this critical speed is reached, weighted bell-crank levers 26 carried by arms 24 on the motor shaft 10<a> fly outwards by centrifugal force and move laterally a sleeve 23 arranged on the shaft 10<a> and connected to it by a pin-and-slot connection 31, 30. The sleeve 23 engages a loose collar 32 on the shaft 10<a>, which collar carries pins 33 engaging a lever 21 adapted to operate the valve 16 through a link 20 against the resistance of the weighted crank 18. The valve 16 is arranged below the level of the pump so that a supply of oil for starting is trapped above it.
Patent GB-1394895-A (GB)
Title: Process for fixing prints on fibrous material
IPC: D06P3/36
Filed: 1972-06-30
Abstract: 1394895 Fixing prints on polyesters and cellulose acetates HOECHST AG 30 June 1972 [3 July 1971] 30738/72 Heading D1B In a process for printing and continuously fixing prints with disperse dyes on fibrous materials of a linear polyester, cellulose-triacetate or cellulose-2¢-acetate or a mixture of any one or more thereof with wool, natural or regenerated cellulose fibres or other synthetic fibres, a compound of the formula R 1 - CO - (OC 2 H 4 ) n -OC 4 H 8  -O- (C 2 H 4 O) m  -OC-R 2  (1) wherein m and n are each an integer of from 4 to 12 and R 1  and R 2  are each C 11-21  alkyl or alkenyl is applied to the material as a fixing auxiliary. The compound may be used in combination with a compound of the formula wherein x is zero, 1, 2, 3 or 4. Fixation of fibres containing a linear polyester and/or cellulose triacetate is preferably effected at 180-220C for 30-60 seconds with hot air on a stenter frame or at 150-190C for 1-8 minutes in a high temperature steaming apparatus and fixation of fibres containing cellulose 2¢-acetate is preferably effected at 101-105C for 5-30 minutes by steaming with saturated steam. The compounds of formula (1) are used in amounts of 25-60g per kg of printing paste. In one example a mixed fabric of polyethylene terephthalate fibres and mercerised cotton is printed with a mixture of a disperse dyestuff and a reactive dyestuff.