baber/WOPTO huggingface dataset:
Patent GB-1200633-A (GB)
Title: Process for forming hard oxide pellets and product thereof
IPC: C22B1/24
Filed: 1967-08-29
Abstract: 1,200,633. Agglomerating ores. LUMMUS CO. 29 Aug., 1967 [2 Sept., 1966], No. 39519/67. Heading ClA. [Also in Division C5] Metal oxide ore is partially reduced by (i) agglomerating with hydrocarbon oil of 5% boiling point at least 343‹ C., (ii) heating to coke the oil and bake the agglomerates, (iii) heating to harden and effect reduction by residual carbon. Preferably, taconite concentrate (an iron oxide ore) and the oil binder ore preheated to 200- 260‹ C. and pelletized. The pellets are then coked at 370-540‹ C. in an indirectly heated travelling grate kiln and reduced at 815-1205‹ C. in a non-oxidizing atmosphere in a directly heated rotary kiln or travelling grate kiln, e.g. by burning fuel with a deficiency of air. Reduced pellets are cooled in a non-oxidizing atmosphere to 315‹ C. and thereafter in air. In the continuous operation shown (wherein temperatures are given in ‹ F.) ore and recycled undersize material are preheated in a fluidized bed and pelletized. The pellets are heated prior to coking in an indirectly heated furnace which may be a separate portion of the coking kiln. Before reduction the coked pellets are calcined in an indirectly heated travelling grate kiln. Fuel gas and fuel oil fractions are recovered from the coker distillate and used as fuel for the reducer. The reducer effluent supplies heat to the calciner, coker and preheater, and then preheats air (which is mainly supplied to the reducer) and is further water cooled before use in cooling finished pellets. The reheated gas is burnt with cold air and used to generate steam and preheat incoming air in a boiler. In alternative embodiments, agglomerates are formed by briquetting or extruding. Limestone may be added during the mixing and the products may contain up to 5 wt. per cent CaO. The product pellets are porous and may contain at least 70% FeO, less than 1% free carbon and 0-5% metallic iron; if cooling is slow, disproportionation of FeO may yield a metallic iron content of 20%. The combined oxygen in the ore is preferably reduced by 15-40 wt. per cent and the preferred oxygen: iron weight ratio in the product is 0À15-0À34.
Patent GB-930615-A (GB)
Title: Improvements relating to hydraulic shock absorbers
Inventor: LITTLE COLIN ROBERT
IPC: F16F9/48
Filed: 1959-11-23
Abstract: 930,615. Hydro-pneumatic shock-absorbers; railway vehicle buffers. DOWTY HYDRAULIC UNITS Ltd. Nov. 23, 1960 [Nov. 23, 1959], No. 39681/59. Classes 103(5) and 108(3). In a hydraulic shock absorber unit, e.g. a railway vehicle buffer, in which piston and cylinder members 6, 3 enclose a variable chamber 19 from which hydraulic fluid can escape through an orifice 21 and passages 22 in the piston and into a receiving chamber 23 under the control of a metering pin 24 of varying diameter, a spring loaded plate valve 33 is slidingly mounted on a narrower base portion 29 of the pin 24. The valve plate 33 engages a seat 35 around the opening 21 during the ultimate compression movement of the buffer so that the fluid, metred through the space between the base 29 of the pin 24 and the inner edge of the plate valve 33, is independent as to whether the pin 24 is out of axial alignment. One or more longitudinal grooves of variable depth may be provided in the base 29 of the pin 24 and the valve plate 33 may be operative over the whole on the greater part, of the buffer stroke, in which case the end of the spring 34 remote from the plate valve 33 may be supported by the piston 6. The smaller portion 9 of the piston rod 7 slides within a bush 12 having flanged ends 15, 25 which engage within the bore 11 of the cylinder 3 the flange 25 being provided with openings which enable a chamber 20 between the flanges 15, 25 to form an extension of the receiving chamber 23. The buffer is filled with hydraulic fluid to the level A-B and is then charged through an inlet valve 27 in the flange 15 with compressed gas to a predetermined pressure the volume of gas being greater than the volumetric displacement of the smaller diameter portions 9 of the piston rod over its full stroke to give the required compression ratio. Since the chamber 23 expands at a lesser rate than the pressure chamber 19 contracts the gas is further compressed in the chamber 23. In the static conditions the gas pressures in the chambers 19, 23 equalize by means of slight leakage across a piston ring 30.
Patent GB-1164463-A (GB)
Title: Thermal Protection Arrangement
Inventor: ALDER ROBERT OSCAR
IPC: F16L59/08
Filed: 1966-09-06
Abstract: 1,164,463. Aircraft framework; thrust reversers. SOC. NATIONAL D'ETUDE ET DE CONSTRUCTION DE MOTEURS D'AVIATION. 6 Sept., 1966 [14 Sept., 1965], No. 39841/66. Headings B7G and B7W. [Also in Divisions F1 and F2] Structure 2 such as an aircraft structure or engine thrust reverser is protected against a heat source by a plate 4 and a metallic wire netting 1 disposed between the plate and structure, some of the intersections of the netting being secured to the plate and some to the structure, each of the latter intersections being spaced from any of the former intersections by at least one wire which is free of any fixings to the plate or structure. In a modification, a thermal antiradiation shield is interposed between the netting and either the plate or the structure, the netting then being secured to the shield rather than the structure or plate. The structure, shield, wire-netting and plate may be secured by floating nuts and bolts (10, 11, Fig. 3, not shown). ). The netting is secured by welds, staples, rivets or threaded studs, and may be embedded in elastomer.
Patent GB-1014759-A (GB)
Title: Process and apparatus for pneumatically grinding granular, gritty or coarsely powdered dry substances
IPC: B02C19/06
Filed: 1962-10-22
Abstract: 1,014,759. Jet pulverizers. FARBWERKE HOECHST A.G. Oct. 22, 1962 [Oct. 20, 1961], No. 39945/62. Heading B2A. A process for pneumatically grinding granular, gritty or coarsely powdered dry substances is characterized in that linings of rubber or synthetic elastic material which are disposed on the inner sides of the mill covers are kept in continuous rhythmical motion during the grinding process with the aid of compressed gas which is periodically introduced and discharged through pipes. In the jet mill shown, linings 7, 8 secured to the covers 5, 6 e.g. by adhesive, are provided with annular channels 9 connected one to another by channels 10. Compressed air is periodically introduced and discharged at 11, 12. The mill covers may alternatively be provided with flat elastic bodies of rubber or a synthetic material containing hollow spaces which may be of different dimensions and may all or in part be connected one to another by channels.
Patent GB-1254996-A (GB)
Title: Apparatus for cutting reinforced concrete
IPC: B28D1/22
Filed: 1970-08-20
Abstract: 1,254,996. Severing. SANDYFORD ENG. Ltd. 20 Aug., 1970 [21 Aug., 1969], No. 40202/70. Heading B3D. Apparatus for cutting reinforced concrete piles, pipes and the like 1 comprises a sub-frame member 2 adapted to embrace the pile and be releasably secured thereto, a main frame 3 having first and second frameworks for embracing the pile, the first framework 10 being mounted on the sub-frame and adapted to be fixed in position relative to the pile, the second framwork 11 being mounted on the first and to rotate around the pile, and a pile cutting member 26 operatively associated with the second framework. The sub-frame 2 can be secured by clamps 5 to the pile and is provided with a catwalk 7 and levelling screws 8 for positioning the first framework 10 which, when positioned, is secured to the pile by clamps 12. The second framework 11 is guided by rollers 15, 16 for rotation on the first framework 10 and is rotated by a hand wheel 21 driving through gearing 20 a sprocket 18 around which is a chain 19 engaging a sprocket 17 on the framework 10. The pile cutting member consists of a circular diamond impregnated saw 26 driven by an electric motor or, if the saw is to operate under water, an hydraulic motor 27 mounted on a slide 23 adjustable on the second framework by a hand wheel 25. The apparatus may be placed on the pile and removed by a crane or the like, the framework 11 being provided with lifting lugs and the sub-frame 2 being connected to the framework 10 by chains 14.
Patent GB-942770-A (GB)
Title: Safety devices for cutting and pressing machines
IPC: F16P3/04
Filed: 1960-11-23
Abstract: 942,770. Machinery guards; controlling Clutches. TRICO-FOLBERTH Ltd., and G. E. VICKERSON. Dec. 29, 1961 [Nov. 23, 1960], No. 40304/60. Headings F2J and F2L. In a punching, cutting, drilling or similar machine, a sheath surrounding a tool member is mechanically connected to a starting pedal 1 through linkwork including a spring 24 so that actuation of the pedal 1 causes the sheath to descend towards an anvil 32 with a force which is independent of the force applied to the pedal 1, and when the gap between the sheath and the anvil 32, or an object upon it, has closed, or nearly so, a valve 38 is actuated to effect the power stroke of the punch member towards the anvil. The linkwork comprises a rod 4 attached to a pin 8 which carries a pawl 14 which engages a bell-crank lever 16. A sleeve 20, pivoted to the bell-crank lever 16, is connected to a rod 22 by the spring 24, the rod 22 in turn being connected to a lever 26 carrying an adjustable screw 36 which actuates the valve 38. The latter controls the passage of air into a cylinder 40 which actuates clutch-engaging lever 44 to start the power stroke of the machine. To ensure that the clutch is disengaged after one power stroke even if the pedal 1 remains depressed, a cam 45 moves a pivoted arm 46 to disengage pawl 14 from the bell-crank lever 16, thereby allowing all the components further removed from the pedal 1 than the pawl 14 to return to their positions occupied prior to the working cycle. Alternatively, an hydraulic system or micro-switch and operating solenoid may be employed.
Patent GB-1166547-A (GB)
Title: Heating of Electron Tube Cathodes
IPC: H01J35/22
Filed: 1967-09-05
Abstract: 1,166,547. Cathode constructions; X-ray tubes; lasers. PICKER CORP. 5 Sept., 1967 [19 Sept., 1966], No. 40477/67. Headings H1C and HID. A thermionic cathode 18 for an X-ray tube is heated by a radiation source, preferably a laser. This results in the emission of positive ions which bombard the cathode to release further electrons, so the current density obtainable is increased, and the X-ray tube can be controlled by controlling the radiation source. The drawing shows a tube 11 which may be disposable, i.e. used once and then destroyed, and includes a wire anode 20 which may sublimate after bombardment by electrons from the cathode. The laser generator 29 is provided with a timing control 33 which regulates the duration of the pulses of the laser beam to give exposure times of the order of microseconds.
Patent GB-1130071-A (GB)
Title: Improvements in or relating to tripping mechanisms for towing hooks
Inventor: MADDOCKS ARTHUR DAVID
IPC: B63B21/56
Filed: 1966-09-09
Abstract: 1,130,071. Hooks. BRITANNIA MARINE TOWING EQUIPMENT Ltd. 9 Sept., 1966, No. 40484/66 Addition to 844,157. Heading E2A. The tripping mechanism according to claim 1 of the parent specification is modified in that a second pivotal link member 26 is provided between a primary link member 18 and the tripping lever 35. the pivotal axis of the second link member 26 also being intermediate the pivotal axis of the hook member 10 and the tripping lever 35, and the primary link member 18 and the second link member 26 having interengaging surfaces 24, 25 and the second link member 26 also having a surface 31 engaging with a pin 32a on the tripping lever. As shown, the hook member 10 is provided with projections which engage with edges 50 of the link member 18 if the latter rebounds from a shock absorber 47 when the member 18 is tripped.
Patent GB-1205239-A (GB)
Title: Carbon analyzing system
Inventor: PYSNIK JOSEPH
IPC: C21C5/04
Filed: 1967-09-05
Abstract: 1,205,239. Selective signalling. UNITED STATES STEEL CORP. 5 Sept., 1967 [16 Sept., 1966], No. 40596/67. Heading G4H.  The percentage loss of carbon from a molten metal bath is determined by producing a first signal proportional to the net rate of loss of carbon (by differencing the amount of carbon entering the bath in the form of fuel and the amount of carbon leaving the bath in the form of carbon dioxide in the exhaust gases), by producing a second signal proportional to the mass of metal in the bath, by repeatedly integrating said first signal until the integral equals said second signal, by resetting the integrator each time this occurs and by counting the number of resetting operations, which number will be proportional to the percentage loss of carbon. As described the mass rates of the fuels supplied are measured 10, 12, 14, 16 and appropriately scaled 26. 28, 30, 32 to provide a sum signal proportional to the mass rate of input of carbon, the percentage of carbon dioxide in the exhaust gases is determined 40 and multiplied by the rate of flow of the exhaust gases which is determined by measuring 50 the power supplied to the exhaust fans and the two signals are subtracted 62 to produce a signal proportional to the net rate of loss of carbon, which signal is applied to an integrator 68. Whenever the integrator output exceeds a manually set 98 signal proportional to the initial mass of metal in the bath, a voltage comparator 72 energizes a relay R12, which, via relays R16 and R15 resets the integrator and subtracts one from a counter 90 initially set to the percentage carbon in the metal before reduction commenced. Counter 90 thus continually indicates the percentage carbon remaining in the metal. During the reduction process small samples can be extracted and analysed and if the indication in counter 90 is incorrect, a correcting number can be set into a counter 110 and then transferred, either additively or subtractively to counter 90 by depressing either key 112 or key 116. The total mass of carbon removed can be obtained from a second integrator 70 in conjunction with relays R20, R21, R22 and a counter 89.
Patent GB-1080328-A (GB)
Title: Drive or reversal station of a longwall conveyor
IPC: E21F13/10
Filed: 1964-10-06
Abstract: 1,080,328. Conveyers; jacks. GEWERKSCHAFT EISENHUTTE WESTFALIA. Oct. 6, 1964 [Oct. 7, 1963], No. 40693/64. Headings B8A and B8J. - A drive or reversal station 3 of a longwall conveyer 4 which can be shifted as coal-getting progresses is guided on a bracing beam 2 transversely of the face is characterized in that the machine frame of the station 3 lies on a base element in the form of a plate 13 hinged at 7 to a base member 6 in the form of another plate. The base member 6 and the base element 13 may constitute an independent structural unit or the base element 13 may be part of the frame of the station 3. The base member 6 is connected to the beam 2 through a swivel 8 and a guide 5 slidingly arranged on the beam 2. The station 3 is jacked up by introducing compressed air (or a pressure liquid) into a set of air cushions 9 of rubber or the like. The oblique position is secured by a bolt 10 engaging a bored extension 11 of the base element 13 and a support 12 articulated to the base member 6, whereupon the air cushions 9 are relieved of pressure.
Patent GB-890516-A (GB)
Title: Improvements relating to production of ethylene copolymers and catalysts therefor
IPC: C08F10/00
Filed: 1953-12-18
Abstract: A polymerization catalyst comprises chromium oxide and at least one of manganese, cobalt and nickel oxides on a silica-alumina support, at least part of the chromium being in the hexavalent state.  The latter requirement may be ensured by heating the catalyst, e.g. at 350 DEG -1500 DEG F. in a non-reducing anhydrous atmosphere.  The catalyst support may contain additionally, e.g. magnesia or zirconia, and the used catalyst may be regenerated by oxidation.  Reference has been directed by the Comptroller to Specification 858,945.ALSO:An ethylene copolymer is prepared by contacting a major proportion of ethylene with a minor proportion of a C3-8 aliphatic olefin, at 100 DEG -325 DEG F., in the presence of a catalyst comprising chromium oxide and at least one of manganese, cobalt and nickel oxides on a silica-alumina support, at least part of the chromium being in the hexavalent state.  The latter requirement may be ensured by heating the catalyst, e.g. at 350 DEG -1500 DEG F. in a non-reducing anhydrous atmosphere.  The polymerization is preferably effected in an inert hydrocarbon diluent; in the example ethylene and butene-1 are copolymerized in cyclohexane.  Other comonomers mentioned are propylene, pentene-1, hexene-1, octene-1, 4-methylpentene-1 and 4-methylhexene-1.  The catalyst support may contain additionally, e.g. magnesia or zirconia, and the used catalyst may be regenerated by oxidation.  Reference has been directed by the Comptroller to Specification 858,945.
Patent GB-1529618-A (GB)
Title: Tab for easy-opening container wall
IPC: B65D17/00
Filed: 1976-10-01
Abstract: 1529618 Pull tabs for easy-open can ends ALUMINUM CO OF AMERICA 1 Oct 1976 [22 Jan 1976] 40886/76 Heading B8D A sheet metal pull tab for attachment to the score-defined removable panel of an easy-open can end comprises a rivet-receiving attachment lug or tang 44 which is inclined out of the general plane of the tab such that, on attachment to the can end, the tang resiliently presses the tab against the can end to prevent excessive lifting of the lifting or finger-ring portion 50 of the tab from the can end when the latter is domed by internal pressure. As shown, the tab is in the form of a ring and the tang is inclined upwardly between 10 and 50 degrees to the general plane of the tab. In a modification the tang is incised from the main body of a sheet metal tab itself, Fig. 6 (not shown), between a nose portion and a finger ring portion.
Patent GB-1390512-A (GB)
Title: Fluid-flow control valves
IPC: F16K5/06
Filed: 1971-09-02
Abstract: 1390512 Valves SAUNDERS VALVE CO Ltd 4 Aug 1972 [2 Sept 1971] 40905/71 Heading F2V A ball valve comprises a seating ring 4 held in position by a retainer 11 and sealing against linings 5 and 6 in the valve housing by means of "0"-rings 9 and 10. One or both "0"-rings may be replaced by a rib or ribs in the material of the seating ring. The retainer 11 is integral with the valve housing or is formed as two semicircular segments clamped between an end connection 2 and the valve body 1. The lining is formed of rubber, plastics, glass or enamel.
Patent GB-1369551-A (GB)
Title: Active dried yeast
IPC: A21D8/04
Filed: 1972-09-05
Abstract: 1369551 Active dried yeast DISTILLERS CO (YEAST) Ltd 19 March 1973 [ 5 Sept 1972] 41144/72 Addition to 1140016 Heading C6F [Also in Division A2] An active dried yeast is produced by feeding crumbly yeast continuously into a mill through which air is passed and disintegrating the yeast to a powder without any substantial breakdown of the yeast cells, continuously carrying the powder out of the mill in a stream of air, separating it from the air stream and then drying it to a dry matter content of at least 92 per cent by weight e.g. 95-97À5%, the drying being conducted in the substantial absence of any force tending to compress the powder at least until the dry matter content exceeds 75%. According to preferred features, particles of crumbly yeast of size 3-8mm are formed by extruding a cake of compressed yeast through a bundle of orifices, the disintegration within the mill is produced either by air turbulence entirely or by fast rotating blades that induce air turbulence, the yeast powder leaves the mill entrained in a stream of air, and drying is effected either on trays or by a fluidized or spouted bed system. The drying conditions are specified. After drying, the powder is sieved to remove particles above 0À5 (or 0À35) mm in diameter. Sodium chloride may be added to the initial yeast to remove extra-cellular water, whereby the particles are rendered more crumbly. The active dried yeast may be reconstituted by being mixed with an excess of flour or exposure to an ambient humid atmosphere.
Patent GB-913930-A (GB)
Title: Blade for axial-flow fans producing an acceleration in a meridian direction
IPC: F04D29/38
Filed: 1959-12-03
Abstract: 913,930. Axial-flow fans. SOC. LYONNAISE DE VENTILATION INDUSTRIELLE. Dec. 3, 1959 [Dec. 12, 1958], No. 41154/59. Class 110 (1). In an axial-flow fan comprising a wheel housed in an outer substantially cylindrical housing, the wheel comprises a hub increasing in section from the inflow side to the outdow side and at least two blades, and a section of each blade, taken on a cylinder coaxial with the axis of rotation of the wheel, has a leading edge 5 and a trailing edge 6 which taper and a line I of maximum thickness measured on a circle of the cylinder, which line, if extended to the chord L of the section intersects the chord at a point thereof located between  and ¢ of the length of the chord measured from the leading edge 5.
Patent GB-1320633-A (GB)
Title: Preparation of alpha-hydroxy ketones
IPC: C07C45/63
Filed: 1971-09-03
Abstract: 1320633 Alpha-hydroxy ketones CHEM SYSTEMS Inc 3 Sept 1971 [8 Sept 1970] 41211/71 Heading C2C Alpha hydroxy ketones are prepared by chlorinating a ketone having an alpha hydrogen atom and from 4 to 15 carbon atoms in the liquid phase in the presence of a solvent at 0‹ to 100‹ C., thereby forming a reaction product containing an alpha-chloro ketone and unreacted ketone and hydrolysing the alpha-chloro ketone in the presence of an alkaline material prior to or during the separation of the unreacted ketone. The ketone may by a cyclic ketone having from 5 to 12 ring carbon atoms. The chlorination reaction product may be hydrolysed in an aqueous solution containing an ammonium or alkali metal carbonate or bicarbonate. The chlorination may be carried out in an organic solvent capable of dissolving the ketone or in the presence of water.
Patent GB-1031579-A (GB)
Title: Process for the production of synthetic resins
Inventor: WAAG THEODOR
IPC: C08L61/02
Filed: 1964-10-09
Abstract: In a process for the production of synthetic foamed resins, a mono-, di- or trimethylol ketone or a mixture thereof is first precondensed by the method described in the patent Specification and then foamed and/or hardened by the addition of catalytic amounts of a 10 to 60% aqueous solution of sodium or potassium hydroxide; 1.5 to 5.0 parts by weight of pure sodium or potassium hydroxide are used, in the form of a 10 to 60% aqueous solution, per 100 parts by weight of precondensate.
Patent GB-862462-A (GB)
Title: Improvements relating to torque transducers
Inventor: BOOTY MARTYN
IPC: G01L3/10
Filed: 1958-12-22
Abstract: 862,462. Torque transducers. SAUNDERSROE Ltd. Dec. 18, 1959 [Dec. 22, 1958], No. 41375/58. Class 40 (1). A compact torque transducer comprises a a shaft 10 which has a portion of reduced diameter accommodating strain gauges and contact slip rings or other pick-off means which are fitted on the same length of shaft. Fig. 1 shows one embodiment in which four strain gauges 15 are cemented on to the reduced shaft 12. An insulating sleeve 16 is fitted over the gauges as shown and the slip rings 17 are mounted on this, separately insulated by sleeves 18 and clamped into position by a nut 20. This constitutes the rotor of the device. Contact is made via several brushes 27 fitted in the stator brush housing 25 to a D.C. or A.C. circuit which interprets the torque, in for example a bridge circuit. In an alternative embodiment supplied by A.C., Fig. 2 (not shown), the input and output are transmitted by means of two transformers, each of which has a rotor and a stator winding and since both rotor windings rotate together the coupling is not affected. The device can be used to measure power by incorporating it with a speed transducer.