baber/WOPTO huggingface dataset:
Patent GB-1371805-A (GB)
Title: Reaction vessel including liquid/vapour separation apparatus
IPC: B01D19/00
Filed: 1971-10-08
Abstract: 1371805 Catalytic reactor CITIES SERVICE RESEARCH & DEVELOPMENT CO 8 Oct 1971 [17 Dec 1970] 46894/71 Heading B1F In a reactor, e.g. for catalytic treatment of heavy hydrocarbons with hydrogen, liquid retaining means 42 in the form of a draw off pan prevents gas from being drawn off with liquid through liquid draw off pipe 38 by reducing vortexing in the liquid reaction mixture, the pan 42 having a restricted orifice 46 for escape of entrained catalyst, and tube 28 acts as a downflow liquid recycle conduit. In operation, an expanded bed of particulate catalyst is maintained in vessel 12 above bubble cap tray 22 with its upper boundary maintained below the open top of downcomer 54. The liquid level is maintained between draw off pan and vapour outlet 36. Downcomer 50 is proportioned to impart minimum velocity to liquid entering conduit 28, deflector 58 acts to reduce vortexing, and vaned baffle 64 acts to straighten liquid flow. Liquid flow down conduit 28 is caused by centrifugal impeller pump 30.
Patent GB-1563415-A (GB)
Title: Azo dyestuffs
IPC: C09B31/065
Filed: 1976-11-12
Abstract: Preparation of dyes by reacting mono- or bisdiazo compounds with certain dye intermediates (coupling components), and use of the dyes, in particular for leather.
Patent GB-1412465-A (GB)
Title: Method of forming an article from resin-impregnated plastics  material
IPC: B29C67/00
Filed: 1972-10-13
Abstract: 1412465 Moulding foam scrap SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ NV 13 Oct 1972 47298/72 Heading B5A A method of moulding an article comprises impregnating pieces of cellular plastics material with liquid thermosetting resin so that at least 10% of the total volume of the cells is filled with resin, placing the pieces together with cellular pieces substantially free of resin in a mould or between endless belts and compressing the pieces such that resin is expressed from the resin-rich into the resin-free pieces. Non- impregnatable material such as closed cell plastics material, powder, granular or fibrous filler, e.g. asbestos, glass fibres, mat or cloth, felt or a blowing agent may be mixed locally or through-out the pieces. The pieces may be placed between glass fibre sheets, wrapped in a sheet or placed in a bag of flexible foamed polyurethane prior to moulding. The pieces may comprise polystyrene, polyurethane or elastomers. The resin may be based on epoxys, polyesters or formaldehyde resin's. The pieces may have a length of 0À5-8 ems. and may suffer a volume reduction of 20-80% during moulding. Articles having a square or rectangular shape, e.g. tiled or mosaic flooring and alternating layers of open and closed-cell plastics material may be formed.
Patent GB-1022990-A (GB)
Title: System for reception of electric signals applicable mainly to telegraph exchanges
IPC: H04L12/52
Filed: 1964-11-20
Abstract: 1,022,990. Telegraphy. STANDARD TELEPHONES & CABLES Ltd. Nov. 20, 1964 [Nov. 20, 1963], No. 47313/64. Heading H4P. The invention provides a repeater which is used in time-multiplex manner with a plurality of lines, and a record queue is made of the time of occurrence of each transition in the received data, the regenerated signals being derived from queue. In the embodiment described the incoming lines are scanned in groups of seven lines. All the groups are scanned during a bit period, and each line is scanned several times in each bit period. Input cycle for each line relay contact group selected. Any data currently stored in the row of a core store MG corresponding to the group selected is transferred to a register RM, and the data read from the relay contacts is stored in a register RE and also in store MG. At this point, therefore, the current state of the incoming lines of the selected group is stored in RE and the state during the preceding scan of that group is in RM. The present and past states of the line group are compared, and any change in state is stored in RE. A counter which indicates the first available position in the queue store causes a scanner to select that position, and the line group number, the transition indications, and the time of occurrence of the transition (in binary code and relative to the start bit) are stored therein. The queue counter advances one step and the cycle repeats for the next selected group. Output cycle.-This cycle takes place only if the queue store indicates that a change in data state has occurred. A queue counter indicates the position in the queue which is to be read first. When that position has been selected, the data from the queue is passed to store RA. The line group position in a store is selected in accordance with the group number read from the queue, and the position within that group which corresponds to the first line for which a change of state was recorded is chosen. In this position is found a number indieating the time of occurrence of the midpoint of the start bit. The difference between this time and the time of the change of state already stored on RA is determined. If the difference indicates that the change of state corresponds to the second bit in the character then that bit must be a mark since the first or start bit is a space. This bit state is passed to the relevant line store. The process then repeats for each line in the group, whereupon the queue counter is stepped and the whole cycle repeats for the next queue location. When a complete character has been reconstituted it, together with the appropriate line number, is stored in another queue store prior to processing by known means.
Patent GB-1372095-A (GB)
Title: Composite beam
IPC: E04C3/04
Filed: 1971-10-12
Abstract: 1372095 Composite beams P A BOONEN 12 Oct 1971 [12 Oct 1970] 47450/71 Heading E1K A composite beam, preferably of metal, comprises upper and lower flanges 1, 2 joined together by a composite web 3 formed by two folded sheets in face to face relationship each having a planar portion 6 opposed to that of the other sheet. Each sheet 4, 5 has edge portions 7, 8 connected to the flanges 1, 2 and inclined parts 9, 10 each forming one of the side walls of a triangular tube adjacent each flange. The beam being additionally provided with at least one reinforcement sheet which may be sandwiched between the planar portions 6 of the composite web or may be secured in or on the flanges. The flanges may be inclined to each other, see Fig. 7 (not shown) or one may be formed with angled plates providing a central apex, see Fig. 8 (not shown).
Patent GB-1116454-A (GB)
Title: Improvements in or relating to machines for mining minerals
Inventor: WEBSTER FREDERICK
IPC: E21C27/24
Filed: 1965-11-10
Abstract: 1,116,454. Mineral mining machines. GREENSIDE MACHINE CO. Ltd. 28 Oct., 1966 [10 Nov., 1965, 17 Nov., 1965], Nos. 47608/65 and 48770/65. Heading E1F. In a heading or a mining machine a powered cutter drum assembly is slidably mounted on a beam extending at right angles to the axis of rotation of the drum and slidably supported in a slideway secured across a vertically swing- able boom pivotally mounted on a self propelled chassis, all these units of the machine being independently movable with respect to one another.
Patent GB-1324738-A (GB)
Title: Autocondensation of urea
IPC: A23K50/15
Filed: 1971-10-13
Abstract: 1324738 NPN supplements AFRICAN EXPLOSIVES & CHEMICAL INDUSTRIES Ltd 13 Oct 1971 [21 Oct 1970] 47677/71 Heading A2B [Also in Division C2] A non-protein nitrogen supplement for ruminant feeds containing predominantly biuret comprises a mixture of autocondensation products of urea, obtained by heating at between 125 and 180‹C. finely divided urea dispersed in an inert liquid containing a surface active agent in an amount of 0.01 to 1.0 per cent m/m of the initial quantity of urea, the reaction being conducted with continuous stirring in a vessel having a smooth surface for a period of time sufficient to convert at least 90% of the urea to products. The mixture may also contain triuret and cyanuric acid.
Patent GB-1452430-A (GB)
Title: Cloche and cloche frame or plant support
IPC: A01G13/04
Filed: 1974-11-04
Abstract: 1452430 Cloche frames; plant supports J BOLTON 24 July 1975 [4 Nov 1974] 47692/74 Heading A1E A cloche frame, which may also be used as a plant support, comprises a cross piece 1 with two converging sides pieces 4, 5 linked by one or two open or closed loops 10, 11.  The parts 1, 4, 5 lie in a plane perpendicular to the planes of the loops 10, 11. The frame may be formed of plastics-coated metal wire. A plastics bag 13 is located over the frame, its open end being secured by spring clips 15 to the loop 11.
Patent GB-1006009-A (GB)
Title: Hydrodenitrification of oil with counter-current hydrogen
IPC: C10G47/00
Filed: 1962-12-18
Abstract: Nitrogen is removed from hydrocarbon oils, which boil at least 90% above 400 DEG  F. and at least 10% above 750 DEG  F., by introducing the oil at the top of a reaction zone containing a single fixed bed of a sulfactive hydrogenation catalyst, e.g. a sulphided, high metal content, nickel - molybdenum - alumina catalyst, withdrawing purified oil from the bottom of the zone, withdrawing hydrogen effluent from the top of the zone, and recycling this hydrogen to the bottom of the zone whilst maintaining its ammonia content at less than the equivalent of 10% of the initial nitrogen content of the oil, such as to convert at least 90% of the nitrogen in the oil to ammonia. Reaction conditions are: 500-800 DEG  F; Hydrogen partial pressure 200-4000 p.s.i.g.; Flow H2 relative to oil 1000-1500 SCF/barrel; Flow oil relative to catalyst 0.2-10 LHSV.  The hydrogen may contain sufficient H2S to keep the catalyst sulphide.  The oil from the first stage may be contacted with a nitrogen-sensitive hydrocracking catalyst, e.g. nickel sulphide on an active silica-alumina support, with excess hydrogen, the ammonia content of which is maintained at less than the equivalent of 10% of the initial nitrogen content of the oil, the hydrogen effluent being at least in part passed to the first stage, and some if desired recycled to the second stage.  The nickel oil may be preheated by heat exchange with effluent from the second stage, and part of the effluent from the second stage may be recycled to some point in the first stage or mixed with the oil effluent from the first stage.
Patent GB-1475959-A (GB)
Title: Flare stack gas burner
IPC: F23G7/08
Filed: 1975-11-20
Abstract: 1475959 Flare stack burners COMBUSTION UNLIMITED Inc 20 Nov 1975 [6 March 1975] 47813/75 Heading F4T A flare stack comprises a vertical stack pipe 10 supplied (e.g. as at 11) with air under pressure, a vertical pipe 12, supplied with waste gas under pressure, inside the pipe 10, the gas pipe 12 having, below the upper end of the stack pipe 10, a plurality of arms 18 with spaces therebetween for flow of air and with upwardly facing discharge openings 24 for gas, and a fixed diffuser spaced above the arms 18 and having a plurality of vanes 28 for imparting a vertical movement to the flow therethrough. A flare shield 40 comprising a cylindrical portion 41 and a flared portion 43 surrounds the upper end of the stack pipe 10. A plurality of pilot burners 30 with igniter pipes 34 is secured to the outside of the stack pipe 10.
Patent GB-1134063-A (GB)
Title: Improvements relating to anti-resonance coverings and the like
IPC: B60R13/08
Filed: 1965-11-11
Abstract: 1,134,063. Vibration-damping linings. RODOS G.m.b.H. 11 Nov., 1965 [13 Nov., 1964], No. 47945/65. Heading B5N. A vibration damping and absorbing material comprises a carrier layer of bitumen-impregnated felt and a layer of vinyl acetate copolymer mixed with a filler, the copolymer layer being self-adhesive in the temperature range 20‹ to 25‹ C. so that it may be affixed to a supporting base. The co-monomer may be butyl maleate and the filler of graphite, mica or both, the preferred proportions being from 50 to 200 parts by weight of filler to 100 parts of copolymer. Several alternate layers may be superimposed and other layers, e.g. paper, cardboard, plastics or metal foil may be included so long as an outer layer is of the copolymer.
Patent GB-1525505-A (GB)
Title: Monitoring apparatus for checking the operation of logic systems
IPC: G05B19/048
Filed: 1975-11-21
Abstract: 1525505 Monitoring apparatus M POSSATI [Trading as FINIKE ITALIANA MARPOSSSAS DI MARIO POSSATI & C] 21 Nov 1975 [22 Nov 1974] 48028/75 Heading G4D Operation of a machine 10 is monitored by comparison units 15-20 connected in series between a clock pulse source 22 and the reset terminal of a counter 25 which receives at its count terminal clock pulses directly from source 22; if a fault is detected by one of units 15-20 counter 25 is not reset and a decoding circuit 29 opens a switch 33 to turn off the power to the machine. Operation of the monitoring apparatus is checked by temporarily cutting off the supply of clock pulses to comparison unit 15 and hence to the reset input of counter 25 to simulate a fault condition; this may be carried out by initial depression of a push-button (64, Fig. 2), detection of the simulated fault being necessary to initially connect the power supply to the machine 10. For a machine 10 executing cyclic operations a similar simulated fault may be produced at the end of each machine cycle, the next machine cycle only being enabled if the simulated fault is detected.
Patent GB-1460380-A (GB)
Title: Polymeric materials
IPC: C08L21/00
Filed: 1974-11-08
Abstract: 1460380 Flame retardant compositions KAISER ALUMINUM & CHEMICAL CORP 8 Nov 1974 [11 Feb 1974] 48479/74 Heading C3P Compositions comprise (1) a polymeric material selected from polyvinyl chloride, polyvinyl acetate, polyacrylonitrile, polymethacrylic esters, polypropylene, polystyrene ABS resin and polyethylene having a UL 94 burning rate of 0À7 to 2À5 inches/minute, a thermal degradation temperature at or below 450 C. and a processing temperature below 200 C. and (2) 15 to 50 weight per cent of an ammonium dawsonite composition uniformly distributed therein. The ammonium dawsonite composition contains at least 50 weight per cent of NH 4 Al(OH) 2 CO 3 , the balance being aluminous starting material. Examples describe compositions of ammonium dawsonite compositions with polypropylene, polystyrene and polymethyl methacrylate.
Patent GB-1411125-A (GB)
Title: Pressure pulse damping device
IPC: F16L55/053
Filed: 1972-10-24
Abstract: 1411125 Hydraulic accumulators GREER HYDRAULICS Inc 24 Oct 1972 [3 Nov 1971]  49026/72 Heading F1D In a hydraulic accumulator in which a diaphragm 13, Fig.2, separates gas in a space 14 from liquid in a space 15, the bulk of the liquid passing from an inlet 57 to an outlet 58 flows up through a chamber 51, through the chamber 15, down through a chamber 52, into a space 81 and out again to the outlet 58, whilst a smaller volume  passes through ports 95 directly from inlet to outlet. A spring-loaded valve 32 is pressed down on to a seat 23 by the gas pressure when the hydraulic  fluid is not circulating.
Patent GB-1169707-A (GB)
Title: An Arrangement for Securing a Contact Member to a Carrier of Insulating Material
Inventor: HEINZ RUDOLF
IPC: H01H11/06
Filed: 1966-11-02
Abstract: 1,169,707. Switch contacts. LICENTIA PATENT-VERWALTUNGS G.m.b.H. 2 Nov., 1966, No. 49084/66. Heading H1N. A contact member (not shown) for a transformer tap-changing switch is secured to an insulating carrier 4, having an aperture into which the contact member projects, by means of an insulating frame 8 joined thereto and having an aperture to receive the contact member. Recesses 6 extending outwardly from the aperture in frame 8 are closed by the carrier 4 to retain contact member projections received therein. The frame 8 may be cemented to the carrier 4, but, as shown, is secured by means of insulating pins 9 and special retainers 7.
Patent GB-1450113-A (GB)
Title: Extraction column for two liquids moved in counter-current flow
IPC: B01J19/00
Filed: 1973-10-24
Abstract: 1450113 Liquid/liquid extractor LUWA AG 24 Oct 1973 [1 Nov 1972] 49559/73 Heading B1F Countercurrent liquid/liquid extraction appartus. Fig. 2, comprises stirrer 48, partition floors divided into axially aligned segments, 22, 24, the segments being pivoted at shaft 26 and the segments of each axial alignment being connected by shafts 34 to form a partial unit, the partial units being releasably connected e.g. by means, Fig. 6, comprising two threaded pins 90 and 92 held by a nut 94 which can be tightened to draw the units into a retracted position for withdrawal, or loosened partially to cause the partial units to bear against or engage the housing, or loosened completely to enable the partial units to pivot and thus open to allow the removal of the stirrer from the partial unit. The means of Fig. 6 may alternatively be a mechanism as shown in Fig. 8 in which tightening of nut 110 causes cone 106 to move towards the nut, and hence displace bands 66 away from each other together with respective partial units to which they are connected.
Patent GB-1534285-A (GB)
Title: Storage tank
IPC: B65D90/02
Filed: 1975-12-04
Abstract: 1534285 Tanks FRANKLIN HODGE INDUSTRIES Ltd 4 Dec 1975 49744/75 Heading E1T A storage vessel has vertical side walls formed by a flexible membrane supported only by a plurality of spaced rigid uprights so that each membrane portion extending between two adjacent uprights is concave towards the vessel interior. The membrane is made up of aluminium panels extending over part or the whole of the height of the uprights 11 and secured at their edges to adjacent uprights every other upright or every third upright by bolting. In the latter two cases the panels are secured intermediate their vertical edges to the intermediate upright(s). The vessel is rendered water tight by a butyl rubber liner.
Patent GB-1006382-A (GB)
Title: Method of preparing ultra-pure arsenic
IPC: C22B30/04
Filed: 1963-12-17
Abstract: Arsenic halide is purified, particularly from sulphur impurities, by mixing with the halide a quantity of water just sufficient to hydrolytically decompose the impurities but insufficient to cause precipitation of arsenic trioxide, hydrolysing the impurities, preferably by heating the mixture under reflux, and separating ultra-pure arsenic halide from the impurity decomposition products by distillation. When using arsenic trichloride, the preferred halide, the hydrolysis mixture contains 40 volumes of trichloride per volume of water. The purified halide may subsequently be converted to elemental arsenic by reduction at a temperature of from 500 DEG  C. to 1000 DEG  C., preferably 850 DEG  C., with purified hydrogen whose flow velocity is so chosen that the ultra-pure elemental arsenic is predominantly obtained in the metallic modification.
Patent GB-1305096-A (GB)
IPC: B60T8/42
Filed: 1970-10-23
Abstract: 1305096 Fluid pressure brakes SAABSCANIA AB 23 Oct 1970 [27 Oct 1969] 50456/70 Heading F2F A valve unit connected via a line 11 to a wheel cylinder and via a line 10 to a master cylinder is operable in two stages, firstly to close communication between the wheel and master cylinders, and secondly to expand the volume of the hydraulic fluid leading to the wheel cylinder under the control of a three-way solenoid valve 13 actuated by a signal derived from a device sensing skid of the wheel. In normal operation fluid passes from an hydraulic pressure source to a valve chamber 2 via a line 16, valve 13 and line 12 to act on a piston 3 having an extension 4 holding a ball 7 away from a seat 9 allowing free communication between master and wheel cylinders. On occurrence of a skid a signal is passed to energize solenoid valve 13 thereby closing communication between chamber 2 and the pressure source, piston 3 moving downwardly so that ball 7 is seated. Further downward movement of piston 3 expands the volume of fluid in the line 11 to the wheel cylinder. A safety valve comprising a piston 19 and ball 22 or a spindle 27, Fig. 2 (not shown), is also provided which opens when the brake pressure is higher than the hydraulic pressure source pressure to establish direct communication between the master and wheel cylinders via a line 24. In a further embodiment the safety valve comprises a spring biased valve spindle a central smaller diameter portion of which is enclosed by an expandable collet (33), having an opening for the line 10, to prevent leakage of the safety valve.
Patent GB-1171165-A (GB)
Title: Improvements relating to Circuit Arrangements using Capacity Diodes
IPC: H03J3/00
Filed: 1966-11-17
Abstract: 1,171,165. Tuning arrangements. TELEFUNKEN PATENTVERWERTUNGS, G.m.b.H. 17 Nov., 1966 [23 Nov., 1965; 28 May, 1966], No. 51514/66. Heading H3Q. An inductance is tuned over a plurality of frequency bands with a plurality of series capacitance diodes having different ranges of capacitance variation, and those not in use as tuning elements are forward biased to provide band-switching and prevent undesired coupling between the diodes. In the simplest arrangement (Fig. 1, not shown), a resonant circuit is formed of the two diodes with the inductance in series, a large D.C. blocking capacitance being included between the diodes. A reversing switch connects one diode to a fixed negative potential and the other to a variable positive potential for tuning, both voltages being applied to the cathodes of the diodes. In an elaboration (Fig. 4) the inductance forms the secondary 35 of a transformer to the primary of which a signal is applied at 31. The two capacitance diodes 2, 4 are in series with the inductance and the switchable voltages are applied across the large capacitance 38 as before. The diodes have different ranges of capacitance for tuning over different wavebands and the output tap 48 of the transformer is located nearer the diode of greater capacitance. Thus the impedance of the tuned circuit is made correct for the following transistor amplifier 42 for each waveband. In a modification (Fig. 5, not shown) signals are fed into the tapped winding 35 from a preceding transistor amplifier and taken off from the untapped winding 33. This arrangement serves also to equalize the gain in the different wavebands. The inductance may be in the form of a resonant line (Fig. 2, not shown), a voltage node of which is connected to earth through a choke. The line can be in micro-strip form. The diodes may be connected in series in the same sense (Fig. 3, not shown) in which case the voltage source is connected across the series combination and the inductance is joined between the common point of the diodes and earth. This latter arrangement can also be used with series-opposing diodes. The diodes may be formed as a single semi-conductor component. When several circuits as above are selectively switchable into a circuit all the diodes of the inoperative circuits can be forward biased to short the inductance and prevent undesired resonances.