baber/WOPTO huggingface dataset:
Patent GB-1423641-A (GB)
Title: Apparatus for reducing the proportion of harmful substances in the exhaust gases of an internal combustion engine
IPC: F01N13/02
Filed: 1973-04-30
Abstract: 1423641 Treating I.C. engine exhaust gas VOLKSWAGENWERK AG 30 April 1973 [26 May 1972] 20410/73 Heading B1W [Also in 'Divisions Fl and G3] To reduce the harmful substances in the exhaust gas of an internal combustion engine, the fuel/air mixture to the engine is controlled according to the temperature difference between two points in a catalytic converter fed with the exhaust gas. In the embodiment shown, thermistors or thermocouples 5, 6 measure the exhaust gas temperature before and after passing through a catalyst 4 in chamber 3, to control the fuel-air mixture and maintain the temperature difference across the catalyst at a maximum. The mixture may be controlled by a needle valve in a carburettor (Fig. 8 not shown) or the period (or pressure) of a fuel injection system (Fig. 9 also not shown). The exhaust may be split into two chambers and mixed, in one of them, with air or oxygen free gas or fuel, causing a reaction in that chamber if the fuelair mixture is too weak or rich. Temperature sensers in each chamber e.g. across a further catalyst are connected in a bridge circuit which provides the mixture control signal.
Patent GB-1073522-A (GB)
Title: Improved process for manufacture of cyclic alcohols
Inventor: NEW RANDAL GEORGE ARTHUR
IPC: C07C29/52
Filed: 1963-05-22
Abstract: In a process for the preparation of mixtures containing cyclohexanol or cyclopentanol by contacting the corresponding cycloparaffin at a temperature of 100-180 DEG  C. in the liquid phase with an oxygen-containing gas in the presence of boric acid according to Specification 948,394, the spent gas saturated with cycloparaffin vapour is recirculated and reused in the process after addition of fresh oxygen without substantial condensation and removal of cyclo paraffin from the recirculated gas. Preferably a small proportion of the spent gas is withdrawn from the reaction vessel and the remaining gas with added oxygen is recirculated within the reaction vessel. Instead of using boric acid other compounds of boron may be used, for example alkali metal borates, boric acid esters or boric anhydride. Preferably agitators capable of inducing turbulence in the reaction mixture are used and the reactants are injected into the reaction chamber through spray nozzles.
Patent GB-1063332-A (GB)
Title: A process for the catalytic oxidation of propylene
Inventor: ROTTIG WALTER
IPC: C07C51/25
Filed: 1964-05-15
Abstract: Propylene is catalytically oxidized to oxidation products containing more than 50% by weight of acetic acid and acetaldehyde by contacting a gaseous mixture comprising oxygen and propylene containing more than one volume of oxygen per volume of propylene with a catalyst containing molybdic acid and/or molybdenum trioxide at a catalyst temperature of 300 DEG  to 350 DEG  C. and a pressure of not more than 20 atmospheres gauge, the oxygen and the propylene forming 1 to 30 vol. per cent and 0.5 to 10 vol. per cent respectively of the water-free gas mixture, the remainder of the mixture being inert under the reaction conditions.  The catalyst may be supported on a carrier and/or may contain phosphoric acid and/or boric acid as promoters and/or may contain certain elements as activators.  It is preferred to effect the oxidation in the presence of steam or water vapour advantageously in an amount that corresponds to saturation of the gas mixture at at least 20 DEG C.
Patent GB-1132355-A (GB)
Title: Apparatus including safety valve
Inventor: GEORGE BRIAN VICTOR
IPC: G21D3/04
Filed: 1965-05-14
Abstract: 1,132,355. Regulating boiler pressure. ENGLISH ELECTRIC CO. Ltd. 13 May, 1966 [14 May, 1965], No. 20477/65. Heading F4A. [Also in Divisions F2 and G6] A nuclear power plant has a pressure operated safety valve at the heat exchanger. The turbine 28 is supplied with steam generated in the water tubes, 23, of the exchanger 18 by the coolant gas from the reactor moderator 11. The valve 41 is connected between the water tube steam outlet and the gas inlet of 18. A rise of steam pressure above a predetermined limit relative to that of the reactor gas opens the valve and vents steam to the atmosphere. Similarly, a fall in reactor gas pressure, due to a leakage, will open the valve to reduce the plant loading. The valve head 51 is normally maintained closed by the combined action of the compression spring 52 and the reactor gas pressure acting on the piston 53. When the difference in pressure between the steam and gas rises to a predetermined limit the steam pressure, in pipe 40, urges the head 51 to the left, away from the port 46, releasing steam to the discharge 42.
Patent GB-1217074-A (GB)
Title: A coupling means for rigidly securing a sleeve on a shaft
Inventor: WINKELHAUS WERNER
IPC: F16D1/095
Filed: 1968-04-30
Abstract: 1,217,074. Securing gear-wheels on shafts. W. WINKELHAUS. 30 April, 1968, No. 20492/68. Heading F2U. A contracting coupling device for securing a gear-wheel 1 on a shaft 2 comprises a pair of rings 5, 6 arranged on a double conical sleeve 4 surrounding a hub 3 of the gear-wheel, screws 9, which freely pass through ring 5, screw into the ring 6 to draw together the rings 5, 6 to contract and frictionally clamp the gear hub 3 on the shaft 2. Sealing rings 11 are arranged between the rings 5, 6 and mating conical surfaces respectively. The double conical sleeve 4 is formed with unequal conical tapers.
Patent GB-1184717-A (GB)
Title: Improvements in or relating to the Comminuting of Powder Material and to Moulding using Powdered Plastics Materials
Inventor: SHARP HERBERT JOHN
IPC: B29C41/22
Filed: 1967-05-03
Abstract: 1,184,717. Ball mills; mixing &c. GKN SANKEY Ltd. 5 Aug., 1968 [3 May, 1967 (3)], Nos. 20547/67; 20493/67 and 20569/67. Headings B1C and B2A. [Also in Division B5] Powdered plastics material is fluidized and comminuted in a ball mill before feeding to a rotary moulding machine. The various components of a moulding mixture are fed via hoppers 10, 11, 12 into a tube 14 where the material is fluidized by injection of a gas at 15. The tube passes through a vibrator 16 and this part of the tube contains metal balls which are retained by a screen, while the comminuted and inter mixed material passes out, as a fluidized powder, into a moulding machine. This has rotatable moulds 20, 21 rotated about orthogonal axis 22 and 23. The moulding material passes from a conduit 17 into a hollow rotating support shaft 24 and thence through short arms 25 into the moulds. The moulds are rotated slowly either in an oven or by using a heating fluid supplied to double-walled moulds. The fluidizing gas is nitrogen pre-heated by a heat exchanger 26 and recirculated. The heat exchanger may also be used for quick cooling at the end of a moulding operation, and separate hot or cold gas supplies may be maintained. A conductive filler may be used, heated by an electric field, and removed magnetically before moulding.
Patent GB-314905-A (GB)
Title: Improvements in steam generators
IPC: F22B1/22
Filed: 1929-07-04
Abstract: 314,905. Akt.-Ges. Brown, Boveri, et Cie. July 4, 1928, [Convention date]. Heating by indirect contact of gases from explosion chambers.-In a steam boiler comprising means for circulating the boiler water through heat exchangers 4, 6, Fig. 1, through which explosion products from explosions chambers 1-3 flow at high velocity on their way to a gas turbine 8, the frequency of opening of the valves 11-13 controlling the admission of explosive mixture to the chambers 1-3 from a compressor 9 driven by the gas turbine is increased. up to a certain point with decreasing boiler steam pressure, and afterwards the speed of the compressor is increased by bringing into operation another engine such as a steam turbine 19 connected to the compressor shaft. The speed of the water circulation pump 14 between the heat-exchangers. and the boiler drum 15 increases simultaneously with the increase in speed of the compressor. When the boiler is under normal load, the steam pressure acting on a diaphragm 34, Fig. 2, opens the escape valve 35 of an oil-pressure control system to such an extent that the oil pressure in the system is sufficiently high to raise a spring- pressed piston 38 cutting out the control resistance 39 of a motor 21 rotating the cam-shaft 20 operating the mixture admission valves. When the steam pressure decreases upon an increase in the load, the valve 35 further restricts the escape of oil from the control system, and the oil pressure rises still further and opens successively valves 40-42 controlling the admission of boiler steam to the turbine 19. When the steam pressure rises upon a drop in load, the decreased oil pressure in the control system allows the piston to cut out the resistance 39 and to reduce the speed of the motor 21. If the speed of the compressor then falls below a certain point, a governor 31 on the compressor shaft so operates a valve 30 in another oil-pressure control system as to allow the oil pressure in that system to open a steam supply valve 33 of the turbine 19, which then brings the speed of the compressor up to the desired limit. The governor 31 may interrupt by a valve 43 the oil circulation in the control system of the steam valves 40-42 when the speed of the compressor rises to a certain maximum.
Patent GB-305086-A (GB)
Title: Improvements in or relating to heel pads or protectors for boots and shoes
IPC: A43B21/37
Filed: 1928-07-16
Abstract: 305,086. Schwabbauer, R., and Starke, K. Jan. 30, 1928, [Convention date]. Protectors, securing. - Interchangeable heel pads a of the kind having a projecting eye e, Fig. 4, or knob g, Fig. 7, for insertion into a correspondingly shaped recess d, h respectively, Figs. 4, 7, in the heel b and to be retained therein by a split pin c, are characterized in that the ends of the split pin c are outwardly bent and guided in a sleeve c<1>, Figs. 4, 7 inserted in the heel. Guide pins f on the pad fit into holes f<1> in the heel to position the pad.
Patent GB-597291-A (GB)
Title: A device for indicating the air pressure prevailing in pneumatic tyres mounted on vehicle wheels
IPC: B60C23/04
Filed: 1945-08-13
Abstract: 597,291. Pneumatic tyres. ABEL, M., and GAUDOZ, M. M. Aug. 13, 1945, No. 20748. [Class 144 (i)] A device for indicating fall of pressure in a pneumatic tyre comprises a spring-loaded plunger held retracted by the normal pressure in the tyre so as to hold a second spring loaded plunger away from a co-operating contact member in a signalling circuit. In the form shown in Fig. 1, a casing 2 fixed to the wheel rim is fitted with a plunger 3 having a head 3<1> on which the air-tube 4 is seated. The plunger 3 is urged radially outwards by means of a hairpin wire spring 5 fixed to the rim 1 by a tension-adjusting screw 7. The inner end of the plunger 3 normally holds a transverse pin 8, loaded by a spring 8a, away from a fixed contact 12 in a signalling-circuit. On a predetermined fall of pressure in the tyre, one spring 7 forces the plunger 3 clear of the head 8a of the pin 8 which is then moved by its spring 9 to close the circuit for the operation of a visible or audible signal. Fig. 3 shows a modification applied to twin tyres in which the switch-controlling pin 8<2> for one of the tyres is connected, by a cable &c. 23, to an auxiliary spring-loaded pin 8<3> carried by the adjacent rim.
Patent GB-968929-A (GB)
Title: Polymerization of a conjugated diene
IPC: C08F36/04
Filed: 1962-05-30
Abstract: Polymers of conjugated dienes containing from 4 to 10 carbon atoms are polymerized by a continuous process in a polymerization zone, in the presence of a hydrocarbon diluent and a catalyst formed on mixing (a) an organo-metallic compound or a compound of the formula M1M11H4 where M1 is an alkali metal, and M11 is aluminium or boron, with (b) a metal halide, by mixing the catalyst components, diluent, and diene in a mixing zone for a period of less than one minute, and then introducing the mixture into the polymerization zone.  The diene may be butadiene, isoprene, 2,3-dimethyl-1, 3-butadiene, 1,3-, or 2-methyl-1, 3-, or 2,3-dimethyl-1, 3-, or 3-methyl-1, 3-pentadiene, or 2-phenylbutadiene.  The dienes may be copolymerized with other olefinically unsaturated compounds such as 1-olefins, non-conjugated dienes, acrylics, halogen-substituted olefins, vinyl-substituted aromatics, or vinyl-substituted pyridenes. The Specification contains a very extensive list of suitable catalysts.  Exemplified catalysts are a mixture of triisobutylaluminium, titanium tetrachloride, and iodine.  The Specification includes two flow diagrams of continuous processes for carrying the invention into effect, together with methods of recovery of solvent, and unreacted monomer.
Patent GB-404052-A (GB)
Title: Improvements in hinged and sliding windows, doors, partitions, screens and the like
IPC: E06B3/48
Filed: 1932-07-23
Abstract: 404,052. Sliding doors ; casement windows. WELSTEAD, C. E., WICKENDEN, J. J., and WELSTEAD, Ltd., C. E., 18a, Tanfield Road, Croydon. July 23, 1932, No. 20841. [Class 20 (iii).] Sliding casements, doors, partitions, screens, and the like, are composed of independent pairs of sashes hinged together and to sliding mullions c which are supported by T-shaped brackets c<1> and rollers c<2> and by guide rollers c<4> below. The hinged meeting edges of the sashes and the meeting edges of the central mullions overlap to exclude draught when closed. The T-shaped brackets have long extensions c<1> at one side to stiffen the mullions and are supported on different tracks to allow near approach of sashes.
Patent GB-350764-A (GB)
Title: Process for improving agatho-copals
IPC: C09F1/00
Filed: 1930-07-10
Abstract: Shellac-like products are obtained by combining copal resins such as manila and kauri copals with polyoxy-fatty acids under the action of heat.  Suitable acids are trioxy-stearic acid, satwic (tetrahydroxy-stearic) acid, dioxy-stearic and palmitinic acids. The powdered copals may be mixed with the acids in the dry state and the mixture heated.  Alternatively, the copals may be dissolved in alkali solution and the soap solution formed mixed, after filtering if necessary, with an alkaline solution of the oxy-fatty acids.  The mixture is precipitated with an acid such as hydrochloric acid, and the precipitate is heated, for example at 140-160 DEG  C.  The products are soluble in alcohol, borax solutions, &c., and may be used to form varnishes, or mixed with artificial or natural resins such as shellac.  The products harden under the action of heat and may be used for insulating and impregnating purposes, for binders for plastic masses such as gramophone records &c.
Patent GB-136508-A (GB)
Title: Improvements in Portable Refuse Destructors and Water Heaters.
Inventor: QUINNELL WILMOT CLIFTON
IPC: F24H1/20
Filed: 1919-08-28
Abstract: 136,508. Quinnell, W. C. Aug. 28, 1919. Refuse-burning stoves.- A portable refuse-destructor and water-heater consists of an ordinary wooden barred 1 with a vertical central iron pipe 6 attached to the lower end and passing through the upper end, and serving as a combustion chamber for domestic, dairy, and like refuse. At the lower end of the pipe is a grate 7, and at its upper end is a ring 10 closing the aperture 9. The upper end of the barrel has an opening with a lid, by means of which the barrel may be filled with water, and near its lower end is a tap.
Patent GB-140512-A (GB)
Title: Improvements in coin-freed apparatus
IPC: G07F9/02
Filed: 1918-12-18
Abstract: 140,512. Jofeh, J. Dec. 18, 1918. Pantographic apparatus.-A coin-freed apparatus is adapted to deliver a card, on which a profile is drawn by a pencil moved in contact with a disk 10, having a series of profiles 12 cut on its edge. The disk is rotated step-by-step by the engagement, with one of a number of pins 13 on the disk, of a ratchet 15 mounted on a sliding-bar 14 reciprocated by a link 20 and arm 19 on a shaft 18 operated by the coin-freed mechanism. A pencil-carrying arm 32 is mounted so that on the motion of the disk it is brought into contact with a card removed by a slide 50 from a stack, and for this purpose is connected by a horizontal rod 32a, vertical rod 33, and counterbalanced lever 34 to a rod 28 suspended from a Hooke's joint 29. The rod 33 is normally held in raised position by a catch 38, 39, but this is released by the engagement with the arm 39 of a stop 48 mounted on a rod 45 moved by the slide 14. The rod 28 carries a tracer consisting of a wire 24 held in a frame 25 which is moved into engagement with the profile cut in the disk 10 by mechanism comprising n bent arm 41 pivoted at 41a and having a bayonet slot 42 engaged by a pin 43 on the slide bar and a slotted member 40 secured to the rod 28 and engaged by a pin 44 on the arm 41. The rod 45 is secured to the pin 44. When the shaft 18 is rotated in the direction indicated by the arrow, the slide 14 moves to the right, and the rod 28 and its appurtenances are swung to one side so that the wire 24 engages the profile disk and at the same time the catch 39 is released so that the pencil drops into contact with the top card. On the return stroke of the mechanism the disk is rotated by the ratchet 15, a profile is traced on the card, and the card is subsequently delivered by the slide 50 operated by levers 51, 52<a> and a link 52. On completion of the movement the rod 33 is lifted to re-engage the catch 39 by a lever 56 operated by an arm 58 having a pin 57 engaging a cam arm 59.
Patent GB-837234-A (GB)
Title: Improvements in and relating to arrangements for insulating metal screws or bolts
Inventor: BUTCHER ERIC JAMES
IPC: F16B37/14
Filed: 1957-07-04
Abstract: 837,234. Covers for screws. TELEPHONE MANUFACTURING CO. Ltd. June 26, 1958 [June 4, 1957], No. 21181/57. Class 89(1) The exposed heads of metal screws used in electrical apparatus, e.g. to secure a switch plate to a metal box recessed in a well, are each covered with a cap of electrically insulating material, e.g. nylon, rubber, neoprene, polythene and polyvinylchloride. In one arrangement, the screw head 18, Fig. 2, has a step 19 and the cap 21 has a corresponding divergent recess 21a. In a modification, the screw head has a divergent surface 23, Fig. 3, ending at a recess 22, and the cap 24 has a cylindrical recess 24a with a convergent entrance 24b.
Patent GB-186487-A (GB)
Title: Process of applying labels to canned goods
IPC: B44B1/00
Filed: 1921-08-10
Abstract: 186,487. Hart, W. C. Aug. 10, 1921. ornamenting.-Relates to a method of applying descriptive markings to canned goods. The blank is indented with the required lettering &c., after whch the tin or can is made up and filled. The filled tin is subjected to a colouring process which consists of colouring the remainder of the metal of the body and leaving the letters bright, or lacquering the entire tin and subsequently colouring the remainder of the body. The body of the tin may be coloured in parallel stripes or bands and the colouring may be effected by passing the tin over a sticky colourless substance and subsequently over dry powdered colouring- material.
Patent GB-1578266-A (GB)
Title: Azatetracyclic compounds
IPC: C07D313/14
Filed: 1977-05-20
Abstract: Azatetracyclic compounds of formula I <IMAGE> are obtained by reaction of a reactive diester of a diethanol of formula II <IMAGE> with a compound of formula III <IMAGE> The meaning of the individual symbols is given in Claim 1. The novel compounds may be used as tranquillizing, antipsychotic and sedative compounds for the treatment of anxiety (agitation) states.
Patent GB-722948-A (GB)
Title: Method of and apparatus for carrying out exothermic catalytic reactions under high pressure
IPC: C07C29/152
Filed: 1952-08-25
Abstract: In carrying out gaseous exothermic catalytic reactions under high pressure, the temperature of the reactant gases in the catalysis chamber is controlled by circulating water in a closed circuit including heat exchangers in the chamber, the water being condensed in a part of the circuit external to said chamber, and the cooling circuit is in pressure communication with the reactant gases, means being provided for preventing water from the cooling circuit from entering the gas circuit.  In the figure, which illustrates the preferred features with reference to ammonia synthesis, nitrogen and hydrogen under pressure are pumped by pump G through heat exchanger D and past catalyst masses B4, B3, B2 and B1, as indicated by the arrows, finally entering B1 at a temperature of about 400 DEG C. After passing through B1 the gases, now at above 500 DEG C., meet cooling coil C1 whereby the temperature is lowered to 450 DEG C. After further reaction and cooling in the reactor A, the gases return to a further cooler E and liquid ammonia is separated in F, the unchanged reactants being replenished from line M and recycled. Steam produced at high pressure in coils C1, C2 and C3 is condensed in a boiler I by means of which steam at a lower pressure is produced.  The condensed water passes to collecting vessel V and is recirculated by means of electric motor N and pump O situated within the collecting vessel.  The motor is separated from the water sump by two heat insulating baffles between which are disposed a cooling coil P and a line Q by means of which the pressure of the reactants is applied to the cooling system.  The condensate returns to the sump by line R. The motor may be cooled by circulation of the reactant gases through branch S and line Q.  This gas circulation may operate a fluid motor in place of the electric motor N. <PICT:0722948/III/1>
Patent GB-1142823-A (GB)
Title: Weighbridges
Inventor: HUGGINS PETER
IPC: G01G19/02
Filed: 1967-05-08
Abstract: 1,142,823. Weighing, electrically. JOSEPH LUCAS (INDUSTRIES) Ltd. Jan.22, 1968 [May 8, 1967], No.21330/67. Addition to 988, 192. Heading G1N. A weighbridge as claimed the parent Specification is modified by the positioning of the transformer in a pit outside the perimeter of the weighing platform and the pit has a detachable cover to permit adjustment of the transformer.
Patent GB-1072579-A (GB)
Title: Nitrofuran derivatives
Inventor: LANDQUIST JUSTUS KENNETH
IPC: C07D417/06
Filed: 1965-05-20
Abstract: The invention comprises compounds of the formula <FORM:1072579/C2/1> wherein R and R1, which may be the same or different, are alkyl radicals, or R and R1 are joined to form an ethylene radical; pharmaceutically - acceptable acid - addition salts thereof; and a process for their preparation comprising reacting a ketone of the formula <FORM:1072579/C2/2> wherein X represents a halogen atom, with a thiourea derivative of the formula  R.NH.CS.NH.R1.  Ketones of the Formula II are prepared by reacting 5-nitro-2-furaldehyde with a triphenyl-halogenoacetonyl phosphorane.  Pharmaceutical compositions, having antibacterial and antiprotozoal activity, for oral, topical or parenteral administration, comprise a compound of the invention, together with a pharmaceutically-acceptable diluent or carrier.