baber/WOPTO huggingface dataset:
Patent GB-2475492-A (GB)
Title: Fischer-Tropsch catalyst with an alkaline earth metal content of less than 2000 ppm
Inventor: RYTTER ERLING
IPC: B01J21/04
Filed: 2009-11-18
Abstract: A process for preparing a Fischer-Tropsch catalyst is characterised by a porous support material selected from alumina, titania, zirconia, zeolites, carbonaceous material and mixtures thereof, having an alkaline earth metal content of less than 1000 ppm. An example of the alkaline earth metal is calcium or magnesium. The support material is impregnated with cobalt source, such as cobalt nitrate, cobalt carbonate, cobalt (hexa)amine salt(s) and organic cobalt compounds, which contributes an additional alkaline earth metal content of less than 1000 ppm in the final catalyst. The impregnated support is calcined at a temperature of at least 200°C to yield a cobalt oxide catalyst with an alkaline earth metal content of less than 2000 ppm. Also disclosed is a catalyst prepared using the method and a process for producing hydrocarbons using the catalyst.
Patent GB-2475704-A (GB)
Title: Diverting solid particles in an axial flow steam turbine
Inventor: BLATCHFORD DAVID PAUL
IPC: F01D25/24
Filed: 2009-11-26
Abstract: An axial flow steam turbine 10 comprises a rotor 16, a turbine casing 18 and at least first and second turbine stages 12, 14, with the second turbine stage 14 being located downstream from the first turbine stage 12. The radially outer static diaphragm ring 22a of the second turbine stage 14 includes an annular axial extension 38 extending in the upstream direction and carrying a sealing device 40 which cooperates with the shrouds 34 of the moving blades 28 of the first turbine stage 12. An upstream end 38a of the extension 38 is axially spaced from the static diaphragm ring 20a of the first turbine stage 12 such that a circumferential passage 46 is defined between them. Solid particles are directed into the circumferential passage 46, upstream of the row of moving blades 28, by the tangential motion of the steam flow and are thus diverted from the steam flow by the circumferential passage 46 during operation of the steam turbine.
Patent GB-2462399-A (GB)
Title: Search result ranking
Inventor: BUTLIN STEFAN
IPC: G06F17/30
Filed: 2008-06-26
Abstract: A search engine (50, 35, 45,103) can find content items in a first corpus (6, 30), and return search results to the user as it ems ranked according to mentions in a second corpus (7, 77, 87, 30), of the respective found content items. This introduces a degree of independence or separation between the scope and type of the information for ranking and the scope and type of the content items used for responding to the search query. The second corpus can be limited to human moderated discussion site, to provide a more reliable measure of how topical is the item. The first corpus can be limited to mobile web pages. The ranking can also involve a count of mentions in plain text referring to the respective found content items, or be according to a social distance between the user and another user, to whom the respective content item is related.
Patent GB-800497-A (GB)
Title: Arrangements for starting combustion engines
IPC: F02C7/26
Filed: 1956-03-29
Abstract: 800,497. Gas turbine plant; engine stop gear. BENDIX AVIATION CORPORATION. March 29, 1956 [March 31, 1955], No. 10001/56. Classes 110 (3) and 122 (4). [Also in Group XII] A gas turbine engine is started by supplying a monopropellant combustible fuel and a fluid combustion supporting medium to the combustion chamber, igniting the fuel and terminating the supply of combustion supporting medium by means responsive to the pressure of the combustion gases exceeding a predetermined value and thereafter the monopropellant fuel is supplied to the engine through another path. Operation of the switch 17 counter-clockwise to close the switch 19 causes power to be supplied by the A.C. generator 29, driven by the electric motor 37 energized by the battery 39, through the normally closed contacts 83, 97 of a pressure switch controlled by bellows 85 to the ignition coil 101 and through the normally closed relay contacts 61, 63 to solenoid controlled air and fuel valves 71, 73. Opening of the valve 73 allows compressed air from the bottle 143 after passing through the pressure-regulating valve 147 to act on a piston 163 contained in a fuel tank 123 so that fuel is forced from the tank through the valve 71 and check valve 127 into the combustion chamber 89. Another part of the compressed air passes through a pressure differential valve 151 and air metering device 155 into the combustion chamber. The fuel and air mixture is then ignited by energization of the sparking plug 111. When the fuel pressure reaches a predetermined valve which is higher than that necessary to open the valve 127, a valve 133 opens and fuel is also supplied to the combustion chamber through the fuel flow control valve 131. The operation of the valve 133 is unaffected by the pressure in the combustion chamber 89. Upon combustion in the chamber 89, the rise in pressure closes the check valve 127 and pressure differential valve 151 whilst the valve 133 remains open. This pressure rise also de-energizes the spark plug by actuating the bellows 85 to open the contacts 83, 97. The bellows 85 also at the same time close the contacts 83, 171. The combustion products from the chamber 89 are supplied to the turbine 89 driving a generator 185 which provides a secondary power source which supplies the power to maintain the valves 71, 73 open through contacts 83, 171. The invention is applied to a missile. The primary power source 1 which may be that of a mother aircraft or other launching means may be disconnected after starting. If the turbine 92 overspeeds, the governor 190 opens the switch 104, 105, 106 which causes the valves 71, 73 to close and the ignition coil to be de-energized. During starting the valves 71, 73 may be closed by movement of the lever 17 clockwise. This closes switch 21 and causes relay 196 to open contacts 61, 63.
Patent GB-1180193-A (GB)
Title: Preparation of Polyvinyl Acetate Adhesive Emulsions
IPC: C08F18/08
Filed: 1968-03-11
Abstract: 1,180,193. Polyvinyl acetate. SHAWINIGAN CHEMICALS Ltd. 1 March, 1968 [4 March, 1967], No. 10008/68. Heading C3P. Polyvinyl acetate is prepared by polymerising vinyl acetate in aqueous emulsion in the presence of a polymerization initiator combination comprising (1) a water soluble redox polymerization initiator which is hydrogen peroxide and a polyvalent metal formaldehyde sulphoxylate and (2) a vinyl acetate soluble organic peroxide polymerization initiator, and also in the presence of a watersoluble, partially hydrolysed polyvinyl acetate emulsifier having a residual polyvinyl acetate content of between 10% and 30% by weight with at least part of said emulsifier having a solution viscosity of at least 50 centipoises measured in a 4% aqueous solution at 20‹ C. In the example vinyl acetate is polymerized in the presence of water, partially hydrolysed polyvinyl acetate, polyvinyl alcohol, zinc formaldehyde sulphoxylate, decyl benzene sodium sulphonate, hydrogen peroxide, dilauryl peroxide and sodium bicarbonate.
Patent GB-242525-A (GB)
Title: Improvements in or relating to devices for pumping liquids
IPC: B63H11/14
Filed: 1925-04-17
Abstract: 242,525. Evans, G. April 17, 1925. Drawings to Specification. Worm pumps.-The rotor of a worm pump is arranged as a double or multiple-threaded screw, the liquid outlet being arranged at one end of the casing, while the pitch of the threads and the diameter of the screw may vary from the inlet end to the outlet end.
Patent GB-1151320-A (GB)
Title: An improved Roof for a Motor Vehicle
IPC: B60J7/10
Filed: 1968-03-01
Abstract: 1,151,320. Vehicle roofs. DR. ING. H. C. F. PORSCHE K.G. 1 March, 1968 [2 March, 1967], No. 10162/68. Addition to 1,088,980. Heading B7B. A vehicle roof comprises a removable section forward of the roll yoke 11 and a fabric section aft of the yoke. The fabric has a substantially vertical part 25 in which a window pane 24 is set with a peripheral slide fastener 26, and a substantially horizontal part 21 covering the luggage compartment 27. The fabric is kept under tension by rigid links 14, 15, 16, 17 and 18. The depending part 22 is removably attached at floor level to allow access to luggage.
Patent GB-557743-A (GB)
Title: Improvements in or relating to means for cutting and shaping leather and other similar materials
IPC: C14B5/00
Filed: 1942-07-21
Abstract: 557,743. Cutting and shaping leather. RICHARDSON, W. H. July 21, 1942, No. 10195. [Class 31 (i)] [Also in Group XXII] A machine for cutting and shaping leather and similar materials from a blank B to form conical washers comprises a rotary chuck A, Fig. 1, or a fixed block A, Fig. 3, against which the blank is pressed by a spring pLunger, and the blank is acted upon by fixed cutters E. D, Fig. 1, or revolvable cutters E, D, Fig. 3, which move under spring pressure and coact to cut out an annular member which may be a conical washer having concentric cuts. In Fig. 1, the plunger C is fitted with a head M mounted in ball bearings, and is mounted in a shaft F secured in a lathe saddle G. The shaft F is fed forwards progressively to advance the cutters D, E, the cutter D coming into action ahead of the cutter E. In a modified form the chuck A has a convex face instead of a concave one. As shown in Fig. 3 the cutters are mounted on a continuously driven shaft S operated by a pulley T and advanced by a rack engaged by a segmental pinion W operated by a handle W<SP>1</SP> A metal guard Y encloses the knife-holder.
Patent GB-938432-A (GB)
Title: Amino-compounds of the oestrane series and a process for their manufacture
IPC: C07J75/00
Filed: 1960-03-22
Abstract: The invention comprises 3-amino-17b -hydroxy-D 1,3,5(10)-oestratriene and the corresponding derivatives in which the 17b -hydroxyl group is functionally converted, for example, an aceoxy group, and a process for the preparation of 3-amino-compounds of the oestrane series wherein a p-quinol of the said series of the general formula <FORM:0938432/IV(a)/1> wherein R1 represents hydrogen or an acyl radical and in which the non-aromatic portion of the steroid system can include any substituent which takes no part in the reaction, is reacted with a hydrazine derivative of the formula RNHNH2 in which R represents an organic group such as a phenyl or 2,4-dinitrophenyl group or a group of the formula NH2CO-, and the resulting azodyestuff is reductively split up, for example, by means of dithionite or hydrogen in the presence of a hydrogenation catalyst.  The reactant for the above process may be a p-quinol derived from oestradiol or a 17-ester thereof or from oestrone or a 17-protected keto derivative thereof.  The process may be illustrated by the following reaction scheme <FORM:0938432/IV(a)/2>ALSO:Azodyestuffs are prepared by reacting a p-quinol of the oestrane series having the general formula <FORM:0938432/IV(a)/1> wherein R1 represents hydrogen or an acyl group and the non-aromatic portion of the steroid system can include non-reactive substituents such as a 17b -hydroxy or -esterified hydroxy group or a 17-keto or -protected keto group, with a hydrazine derivative of the formula RNHNH2 wherein R is an organic group such as a 2,4-dinitrophenyl or phenyl group or a group of the formula NH2CO-.  The process is illustrated by the following reaction scheme. <FORM:0938432/IV(a)/2>
Patent GB-166343-A (GB)
Title: Kitchen tables with means for preparing and storing food
IPC: A47B13/00
Filed: 1920-04-12
Abstract: 166,343. Rose, F. April 12, 1920. Tables combined with receptacles.-A kitchen cabinet formed with a table-top a comprises an ice chest b, cupboard c, hay-box d, and a storagechamber e for linen or kitchen utensils to which access is obtained by a flap door. The ice-chest is placed just below a hinged door f in the table top. The hay-box d is in the form of a drawer and is provided with special chambers for liquids and solids. Specification 140,311 is referred to.
Patent GB-1154561-A (GB)
Title: Improvements in or relating to the Manufacture of Plastic Articles.
Inventor: HAWKINS WALLACE GERALD
IPC: B29C48/395
Filed: 1965-03-10
Abstract: 1,154,561. Mixing apparatus. CLARKS Ltd. 9 June, 1966 [10 March, 1965], No. 10256/65. Heading B1C [Also in Division B5] A mould cavity 1c is connected by a duct 35 with a mixing chamber 46 into which a mixing head projects, the mixing head having a plurality of conduits 49, 50 through which the constituents of a moulding mixture can be injected into the chamber 46 and a rotary mixing element 45 within the chamber. In the embodiment shown in Fig. 9 the mixing head has a frusto-conical stationary portion 43 adapted to form a seal with a correspondingly shaped extension 44 of the chamber 46. The mixing element 45 may comprise projecting arms carried at the end of a high speed screw 40. Fluid pressure-operated valves 51, 52 control flow of the constituents of the moulding material, and the duct 35 can be closed by a fluid pressure-operated valve 47. Fig. 8 (not shown) shows another embodiment in which three constituents are supplied to a mixing chamber (34) opening directly to a side of the mould. The rotary mixing element (27) may comprise a boss having radially projecting pegs or spiral flutings. The apparatus may be used for moulding shoe soles and heels from polyurethane. A reservoir and a metering pump may be provided for each constituent, the pumps being operated simultaneously. In Fig: 2 a pumping chamber 20 is connected to a reservoir 18 through a one-way valve 22, the pipe 5 being connected to the mixing device. A fluid line 10, leads to a pump (9) Fig. 1 (not shown). Downward movement of a piston in pump (9) flexes an impermeable membrane 21 to expel material from the chamber 20 to the mixing device. The reservoir 18 and chamber 20 constitute a pump 8 forming part of a threecomponent system (Fig. 1). Pumps (6), (7) and (9) are operated by a motor (15) through a pivoted bar (13). Figs: 3 to 7 (not shown) show two-component systems. In Figs. 3, 4 pistons (101), (102) of differing cross-section act through a cross-bar (103) movable by a piston (105) of adjustable stroke to expel material to the mixing device. In a modification (Fig. 5, not shown) the pistons are connected in slots of a pivoted bar (13). In a further modification (Figs. 6, 7, not shown) pumps (111), (111A) are connected through a variable ratio gear box (114),to meter the required amount of material from each reservoir. The material in the reservoirs may be kept under a pressure of 3-5 atmospheres in an atmosphere of dry air or nitrogen.
Patent GB-613543-A (GB)
Title: Improvements relating to the mounting of sound reproducing or recording heads
IPC: G11B3/08
Filed: 1946-04-03
Abstract: 613,543. Gramophone pick-up supports. BAKER, D. J. April 3, 1946, No. 10325. Convention date, April 11, 1945. [Class 40 (ii)] A gramophone pick-up arm 5, adapted to produce constant tangential tracking of the stylus 6b with the record groove, is pivoted on a vertical pin 5a which is movable along a slot 8c<SP>1</SP> in a block 8 pivoted on a horizontal axis 7c in a fixed pedestal 7, the pick-up arm 5 being connected to and supported by the block 8 by means of a link 9, whereby movement of the pick-up arm 5 each side of a mean position on the axis 7A causes the pivotal point 5a to be moved away from the record along the axis 7A. The slot 8c<SP>1</SP> in the block 8 is curved round at the rear end to permit extra outward movement of the arm 5 so that it may be rested on the support 11 when not in use.
Patent GB-438116-A (GB)
Title: Improvements in the manufacture of tires
Filed: 1934-04-05
Abstract: A composite tyre cover built up from two partly defective covers is vulcanized in a closed mould at a temperature of 200 to 260 DEG  F. and a pressure of 200 to 300 pounds per square inch. These temperatures and pressures are stated to be respectively less than and greater than those normally used for the original vulcanization; and, by extending the time to three to six hours, it is stated that any desired re-tread pattern may be formed.  The change of treadform is preferably accomplished slowly and, for this purpose, a comparatively low pressure is used until the proper temperature is set up.
Patent GB-1200188-A (GB)
Title: Improvements in or relating to photographic light-sensitive material
Inventor: WILLEMS JOZEF FRANS
IPC: G03C1/09
Filed: 1967-03-06
Abstract: 1,200,188. Antifoggants for silver halide materials. GEVAERT - AGFA, N. V. Dec. 7, 1967 [March 6, 1967], No. 10372/67. Heading G2C. [Also in Division C2], Photographic silver halide emulsion layers or a layer in water permeable relationship therewith contain as antifoggant a mercury (II) chelate of a compound of formula: - wherein L is an alkylene or substituted alkylene group or an alkylene group interrupted by hetero atoms e.g. oxygen, a cycloalkylene or substituted cycloalkylene group, x is 0 1 1 or 2 1  R is an alkylene or substituted alkylene group and R 1  and R 2  are H, alkyl, substituted alkyl, aralkyl, substituted aralkyl, aryl or substituted aryl. Specified substituent groups or L 1  R 1  R 1  and R 2  are carboxyl, hydroxyl, hydroxypheryl, pyridyl, phosphono, sulpho and 3, 5-chloro - 4 - hydroxyphenyl. The emulsion layer or a layer in water. permeable relationship therewith may contain other antifoggants e.g. 5- methyl - 7 - hydroxy - 5 - triazolo - [1 1 5-a]- pyrimldine benzothizoline - 2 - one and 1 - phenyl - 2 -tetrazoline - 5 - thione or sensitizers e. g. polyoxyalthylene compounds, allyl thioeyanate, sodium thiosulphate, allyl thiourea, noble metal salts and reducing agents.
Patent GB-434283-A (GB)
Title: Improvements in machine-gun synchronising gears for use in aircraft
IPC: F41A19/05
Filed: 1934-04-06
Abstract: 434,283. Aircraft guns. PITT, A. G., Royal Aircraft Establishment, South Farnborough, Hampshire. April 6, 1934, No. 10425. [Class 92 (ii)] Relates to means for controlling and synchronizing the fire of machine guns between aircraft propeller blades of the kind in which the operating cams 19 are driven from the aircraft engine through driving and driven shafts 1, 2 which have their relative angular positions varied to suit the speed of the engine. According to the invention, the timing adjustment is effected by worm and worm wheel gearing 3, 4 driven by toothed gearing 12 from a centrifugal governor 13 rotated by the driving shaft 1. In the form shown, a pair of worms 3 carried by arms 8 extending from the driving shaft 1 engage opposite sides of a worm wheel 4 and normally drive the shaft 2 directly. Outward movements of the governor arms about an axis 14 cause the toothed and worm gearing to convey a correctional advance movement to the shaft 2 and cams 19 depending on the increase of engine speed, the governor arms through pins 15 compressing a spring 18 which reacts to produce an opposite effect if the engine speed falls.
Patent GB-109066-A (GB)
Title: Improvements in or relating to Grenades, Projectiles, and the like.
Inventor: MILLS WILLIAM
IPC: F42B30/04
Filed: 1916-07-25
Abstract: 109,066. Mills, W. July 25, 1916. Projectiles; projectile fuses.-Relates to directaction percussion fuses, that is, fuses in which a projecting part is pressed in on impact to fire the percussion cap. According to the invention, this projecting part is held at safe by distance-pieces until the projectile is fired and its acceleration completed, whereupon the distances-pieces are removed by springs. In the rifle grenade shown, the nose-cap b carrying the firing-pin c is held.at safe by distance-pieces e, which are frictionally gripped between the cap b and the body a of the grenade while acceleration lasts, and are afterwards removed by spring arms f pivoting about pins g. The arms f are normally held at safe against the bodv of the grenade by a ring i, which sets back and releases the arms when the grenade is discharged; or the distancepieces e are locked by a pin which is removed by hand before the grenade is used, and, after the pin is removed, the arms f are confined by a socket on the rifle until the grenade is discharged. The percussion cap d and detonator s are carried bv a socket r, which is screwed into a socket n screwed or otherwise fixed to the grenade body and carrying a tube or sleeve o. The grenade is loaded with explosive by the hole closed by this socket n; or by a bottom hole closed by a screw plug p at the front end of the rod q.
Patent GB-1402953-A (GB)
Title: Insulating support for pressurised gas insulated metal-  encapsulated high-voltage switch gear
IPC: H01H33/64
Filed: 1973-03-05
Abstract: 1402953 Support insulator LICENTIA PATENT-VERWALTUNGS GmbH 5 March 1973 [6 March 1972] 10480/73 Heading H1N A support insulator 1 for a high voltage switch is provided with weakened points 2 which can blow out when gas pressure in the switch housing 11 rises above a safe level leaving the bulk of the insulator to continue in its support capacity. The support insulator can be of conical or disc shape, and the weakened points can be of a different material from the rest of the insulator. In the embodiment described the insulator supports a fixed contact member 9 which co-operates with a movable contact member 5 driven by a motor 4 and retained by a metal housing 6 supported by insulators 7 and 8. The weakened points 2 in the insulator are disc shaped.
Patent GB-1452796-A (GB)
Title: Joints for orthopaedic appliances
IPC: A61F2/64
Filed: 1974-03-08
Abstract: 1452796 Joints for orthopaedic appliances VESSA Ltd 8 Nov 1974 [8 March 1974] 10514/74 Heading A5R [Also in Divisions El and E2] An orthopaedic caliper joint comprises a male member 12 and a two-leaved female member 11 pivoted about a pin 21 wherein a flat surface 16 formed on the periphery of the male member is located between the leaves of the female member throughout pivotal movement of the joint and is engageable by a part of a ring catch 14 slidable over an extension of the female member when the joint is fully extended. The flat surface terminates in a sharp corner 17, but the radius from the pivot axis to this corner is not greater than the radius from that axis to an arcuate portion 18 of the leaves constituting the extension of the female member and so it does not protrude beyond the periphery of the leaves. The ring catch 14 is angled at its leading edge and is formed with a key 19 and a short chamfer on its interior lower surface. The key passes between the leaves of the female member and engages the male member when the joint is fully extended.