baber/WOPTO huggingface dataset:
Patent GB-1429217-A (GB)
Title: Process for the recovery of nitric oxide
IPC: C01B21/26
Filed: 1973-07-20
Abstract: 1429217 Nitric acid; nitric oxide FRIEDRICH UHDE GmbH 20 July 1973 [25 July 1972] 34667/73 Heading C1A [Also in Divisions B1-B2] Combustion gas from an ammonia oxidation unit at 150 to 200 C. passes through line 1 into indirect heat exchanger 2, where it is cooled with medium strength nitric acid to 50 to 80 C. The gas cooler-reboiler 2 is preferably designed to permit withdrawal of a low concentration of nitric acid (0-5 per cent) for discharge at 9 and a second stream of nitric acid (10 per cent) is sent via line 7 to degasser 8. The gas from exchanger 2 is now further cooled to 25 to 35 C. by indirect heat exchange with water in cooler 3. The condensate of nitric acid (5À0 per cent) is fed by line 7 to degasser 8 while the gas, largely nitrogen oxides is raised in pressure and fed to nitric acid scrubber 5 from which pure nitric oxide is obtained via line 6. The nitric acid used for scrubbing can be supplied from a later distillation step by line 15 or can be part of a separate independent circuit. The condensate stream from scrubber 5 is also fed to degasser 8 and the combined streams are treated to liberate dissolved oxides of nitrogen and the condensate with its nitric acid content is fed to vacuum distillation tower 12 while the gases are fed by line 10 to be passed through the compressor 4. The liquid in tower 12 is concentrated to give nitric acid of concentration 50 to 65 per cent withdrawn through line 13; practically pure water condensate returned to scrubber 5 via line 16 or discharged and inert gases which are returned to line 1 via line 18.
Patent GB-1491770-A (GB)
Title: Hydraulic intensifier for machine tools
IPC: F16B3/00
Filed: 1975-08-21
Abstract: 1491770 Hydraulic intensifiers TRANSFORM VERSTARKUNGSMASCHINEN AG 21 Aug 1975 [21 Aug 1974] 34763/75 Heading F1D An intensifier, Fig. 1, comprises at least two low-pressure cylinders 2 each of which houses at least two pistons 7, 8, acted on by compressed air, the piston-rods 9 of which carry plungers 10 which act on hydraulic liquid in a common high-pressure chamber 4. Figs. 2-7, (not shown), illustrate various ways in which the low-pressure cylinders may be arranged with respect to the common highpressure liquid chamber.
Patent GB-490452-A (GB)
Title: Improvements in forced flow steam and other vapour generators
IPC: F22B37/14
Filed: 1936-12-18
Abstract: 490,452. Forced - flow steam boilers. BABCOCK & WILCOX, Ltd. Dec. 18, 1936, No. 34785. Convention date, Dec. 18, 1935. [Class 123 (ii)] In a forced - flow boiler with a horizontal U-shaped heating passage and with parallel connected vaporizing tubes 206 lining the walls of a combustion chamber in one of the limbs of the passage, an air heater 282 is so arranged at the outlet end of the other limb that the gases flow through the heater horizontally, and the air flows through the heater towards the burner 279 at the end of the combustion chamber transversely of the flow of the hot gases. The vaporizing tubes form flat coils extending along the full length of the floor of the combustion chamber, and they are then bent to extend along the sides and back walls and across the rear of the chamber, and finally they form flat coils lining the roof of the chamber. The tubes pass through sliding gas-tight joints in a plate 231 over the chamber and are connected to a separator 232 arranged in the path of the gases between a superheater 242 and a feedwater heater 202. Specification 490,454, [Group XXII], is referred to.
Patent GB-903146-A (GB)
Title: Improvements relating to fasteners
Inventor: RAPATA GEORGE MARTIN
IPC: F16B13/02
Filed: 1959-10-14
Abstract: 903,146. Stud and socket fastenings; nails &c. ILLINOIS TOOL WORKS Inc. Oct. 14, 1959, No. 34847/59. Classes 44 and 89 (2). A one-piece plastic fastener 20 consists of a head 22 with a shank in the form of two or more flexible laterally-spaced longitudinal portions, such as 28, 30, which converge towards the free end of the shank and are held apart, when the fastener is unstressed, by one or more flexible laterally-extending portions such as 44, and shoulder portions 36 externally of the shank and in the vicinity of a laterally-extending portion. In other forms the laterally-extending portions are scissor-shaped, Figs. 5, 6 (not shown); the head is recessed, Fig. 7 (not shown); the shank is substantially of diamond shape with one or two laterally-extending portions, Figs. 9, 10 (not shown), and has links integral with the head, Figs. 11, 12 (not shown); the free ends of the shank portion are separated, Fig. 13 (not shown); and in Figs. 16, 17 (not shown) the head includes a collar portion. The fastener may be cut from extruded stock.
Patent GB-1030399-A (GB)
Title: Oil-miscible hindered phenolic compositions
IPC: C08G8/28
Filed: 1964-08-26
Abstract: Oils such as gasoline, kerosene, fuel oil, gas oil, dioctyl adipate, dinonyl sebacate, castor oil, olive oil, sesame seed oil and mineral oils, as well as lubricating greases, contain as antioxidant an oil miscible butylated bisphenol prepared in a particular manner (see Division C2).  Lubricating oils may contain additionally Ba, Ca, Pb, Zn and Ni diorganophosphorodithioates; P2S5-treated olefins and terpenes; alkyl phenolates; alkyl phenolate (alkaline earth metal) sulphides; sulphur chloride treated or sulphurized olefins; phenolates of phenolformaldehyde condensates; p-aminophenol, N-alkylated phenylenediamines and anthrasilic acid (or esters); metal salts of P2S5-treated polyethylenes, polypropylenes and polyisobutenes; borate esters and boric acid treated amines, amides and imides: organic phosphites and phosphates; polymerized dimethyl silicones; wax-alkylated naphthalene; polyacrylates and polymethacrylates; lard oil; oleic acid and amide; glyceryl dioleates; polyisobutenes; hydrocarbon sulphides and polysulphides; halogenated aliphatic and cycloaliphatic compounds; sulphurized esters; vinyl-pyrrolidone or -pyridine/acrylate or methacrylate copolymers; polyisobutene-substituted succinic anhydride/alkylene amine reaction products which may contain boron; dithiocarbamic acid esters and salts; xanthic acid esters and salts.  Many of such additives are described in further detail.  Specified lubricants contain besides the butylated bisphenol and a motor oil: (a) P2S5-treated turpentine and Zn dioctyl phosphorodithioate, (b) Ca isooctylphenolate monosulphide, or (c) polyisobutene-substituted succinic anhydride/tetraethylenepentamine reaction product.ALSO:Butylated bisphenols are obtained by condensing at least 2 equivalents of phenol with formaldehyde (or a substance yielding it) in presence of an ionic catalyst of pH below 6.5 in water at 20 DEG  C., heating the product to remove water and uncondensed phenol and alkylating the methylene-bridged phenol residue with at least 1.5 equivalents of isobutene per equivalent of phenolic OH in presence of an acid catalyst.  The products may be used as antioxidants for e.g. dioctyl adipate or dinonyl sebacate.ALSO:Materials such as asphalt, national and synthetic rubbers, polyethylene and polyvinyl chloride contain as antioxidant an oil-miscible butylated bisphenol prepared in a particular manner (see Division C2).  In an example, P.V.C. contains additionally dioctyl phthalate.
Patent GB-762834-A (GB)
Title: Improvements in combustion chambers for fluid fuels
IPC: F23R3/10
Filed: 1954-12-02
Abstract: 762,834. Generating combustion products under pressure. GENERAL ELECTRIC CO. Dec. 2, 1954 [Dec. 3, 1953], No. 34972/54. Class 51 (1). In a combustion chamber, for example a gas-turbine engine combustion chamber, an end cap assembly forming the closed end of a cylindrical flame tube 2 comprises a substantially conical stack of separate ring members each in the form of a cylindrical annular band 3, adjacent bands co-operating to define coolant fluid passages therebetween and being displaced axially relative to one another by a distance less than half the axial width of the band. The bands are secured together in the axially-spaced relation. In the end assembly of Fig. 1, the annular bands 3 are provided on their outer surfaces with longitudinal grooves 3a which form passages for flow of coolant air which issues in jets 3b. The fuel injector is surrounded by a dome 4 which together with a plate 8 and ring 5 forms a chamber 7 into which air is led through metering orifices 9, the air issuing through an annular nozzle formed between the dome 4 and the inturned edge 5a of the ring 5 so as to sweep towards the injector as shown at 6a. The stack of annular bands 3 is enclosed within a cap 11 and ring 12, air entering the space 10 through the orifices 15 in the cap 11. The air then issues through the passages 3a. The end assembly is supported from the flame tube 2 by means of U-shaped brackets 14. The bands 3 may be connected together by weld beads disposed in radial planes, each band being formed with an inclined slot in the region of the weld so as to form a resilient triangular prong. Alternatively, alternate pairs of bands may be connected by weld leads, one set of welds being disposed in a radial row spaced circumferentially from the other. Specification 13858/48 (open to inspection under Sect. 91), and 677,602 are referred to.
Patent GB-429511-A (GB)
Title: Improvements relating to adjustable seat fittings
IPC: B60N2/68
Filed: 1933-12-13
Abstract: 429,511. Adjustable tip-up seats. JAGGER, S. B., 5, Green Lane, Walsall. Dec. 13, 1933, No. 35034. [Class 52 (ii)] A tip-up adjustable seat of the type comprising a seat member adapted to be fixed in one of a number of fixed positions on an upright or rear support, comprises seat supporting members 4 having at the rear upstanding projections 3 and abutment members 5 which bear against the rear and front faces respectively of upright members 1 with slots 2 through which the projections 3 of the members 4 are introduced, and means comprising a bar 8 for securing the seat proper so that it can be tipped up, the bar 8 passing through holes in the members 4 and in the uprights 1.
Patent GB-808077-A (GB)
Title: Improvements in or relating to metal vapour electric arc converters
Inventor: HOLLIDAY JOHN HUBERT
IPC: H01J13/10
Filed: 1955-12-06
Abstract: 808,077. Metal vapour converters. GENERAL ELECTRIC CO. Ltd. Dec. 6, 1956 [Dec. 6, 1955], No. 35039/55. Class 39(1). In a metal vapour electric arc converter having a cathode formed by a pool of mercury or other vaporable liquid metal, a heat-conducting cathode-spot-anchoring member, arranged to be cooled by cooling fluid impinging directly thereon, has an upstanding wall portion, preferably of molybdenum or tungsten, arranged to break the surface of the liquid cathode and to be wetted on both sides, thereby to produce an extended meniscus edge for anchoring the cathode spot. The upstanding wall may be a flattened tube 2, Fig. 2, which is bent, in the plane of the mercury surface, into a spiral, serpentine or horse-shoe shape, the flattened sides of the tube being upright and breaking the surface. Cooling fluid enters and leaves the tube through the downwardly extended end portions 5 and 6. Alternatively the upstanding wall may be a dish-shaped member 7, Fig. 3, having a gap 9 in the rim 8 thereof, which is cooled by passing cooling fluid through a tubular member 11, the upper flanged edge of which is closely spaced from the lower surface of the member 7. The mercury 1 is contained in a cathode vessel 3 of nicosel and this vessel is sealed to the lower edge of the glass envelope 4 of the rectifier.
Patent GB-505482-A (GB)
Title: Improvements in protective compositions
IPC: C09D191/00
Filed: 1938-04-12
Abstract: 505,482. Plastic compositions. MARDLES, E. W. J. April 12, 1938, No. 35088. Divided out of 503,772. [Class 22] [Also in Group III] A plastic composition for protecting or jointing wood or metal parts consists of wool fat, or a solution thereof in a solvent, to which is added a natural or synthetic hard wax, such as beeswax, carnauba wax, or high melting paraffin wax, whereby the final dry coating is hardened. The final composition contains up'to 50 per cent of wax. Up to 1/3 of the wool fat may be replaced by petroleum jelly. Pigments, extenders, and water-repellant substances such as magnesium or barium stearate, or triphenyl phosphate may be added. In an example, a plastic'composition consists of wool fat, wax, and zinc oxide, or barium stearate. Solvents such as white spirit, solvent naphtha, or chlorinated hydrocarbons may be added. The composition may be used in molten condition for wood work, or applied to metal parts before riveting.
Patent GB-772513-A (GB)
Title: Improvements in and relating to hydraulic power transmission systems
IPC: B60K17/10
Filed: 1954-12-06
Abstract: 772,513. Motor vehicle hydraulic driving gear. JOY-SULLIVAN, Ltd. Dec. 6, 1954 [Dec. 7, 1953], No. 35231/54. Class 79(2). [Also in Group XXIX] In a hydraulic power transmission system comprising a hydraulic pump 7 driven by a motor M, a flow divider 30, and hydraulic motors 4<SP>1</SP>, 4<SP>11</SP> each having a control valve operative to vent the motor or connect it to the pump, the flow divider comprises intercoupled motor-pump devices, one for each motor, which function when some of the motors are vented to utilize a reduced back pressure on the associated devices in order to boost fluid pressure to the other motors. As shown the invention is applied to a vehicle having endless tracks 2 driven by the motors 4<SP>1</SP>, 4<SP>11</SP> through reversible or irreversible gearing 5. The pump 7 is connected to a reservoir 8 and to the flow divider 30, which is connected to the motors through the valve assembly 21 having an exhaust connection 20 back to the reservoir. The divider 30 divides the pressurized liquid between conduits 13, 14 whereby if the pressure falls in one conduit, the pressure in the other conduit is boosted, and the divider comprises two pairs of meshing gears 35, 36, Fig. 2, the gears 35 being interconnected by a spindle 37, and each pair of gears 35, 36 forming the pump or motor. The valve assembly comprises the two valves separately controllable one for each hydraulic motor. Each valve comprises a spindle 60, Fig. 5, and a casing 45 having a U-shaped conduit 57 connected to the supply conduit 13 or 14, having grooves 53, 58, 59 connected to the exhaust connection 20 and grooves 51, 52 connected to conduits 16, 17 leading to the hydraulic motor. By movement of the spindle 60 the valve blocks both conduits 16, 17 (as shown in Fig. 5) to lock the motor, connects one or other of the conduits 16, 17 to the supply conduit and the other of the conduits 16, 17 to the exhaust connection whereby the hydraulic motor is driven either forward or reverse, and connects the supply conduit 13 or 14 and the conduits 16, 17 to the connection 20 whereby the motor freely idles. In a modified valve, Fig. 6 (not shown), the position for the free idling of the motors is omitted.
Patent GB-367855-A (GB)
Title: Improvements in pistons for fluid pressure engines
IPC: F02F3/02
Filed: 1930-11-26
Abstract: 367,855. Pistons. C.M.D. ENGINEERING CO., Ltd., Wharf Street, and BLUNT, A. W., 62, Emscote Road, both in Warwick. Nov. 26, 1930, No. 35542. [Class 122 (i).] The gudgeon pin bosses B are mounted in flattened sides D of the piston and supported from the head C by two parallel webs A at right-angles to the sides D, Arcuate slots G, Hare formed in the upper parts of the bearing faces and lower parts of the sides D respectively and together form a circumferential oil vent.-A scraper ring groove M is arranged below the faces D and oil escapes to the interior of the piston through holes P. The minimum thrust face of the piston is split as at K. The length of the flattened sides may be equal to the distance E between them.
Patent GB-1499504-A (GB)
Title: Digital measuring instruments
IPC: G01D5/245
Filed: 1975-11-13
Abstract: 1499504 Digital measuring instrument CARSON (INSTRUMENT & EQUIPMENT) Ltd 13 Nov 1975 [13 Aug 1974] 35562/74 Heading G1A A digital measuring instrument for a machine tool is mounted on a bush 1, Fig. 4, intended to fit on a shaft which is rotated by a hand wheel to produce linear movement of a workpiece. The bush rotates within a fixed bearing 3 and comprises an intermediate shoulder 8 attached to which is a transparent disc 9 bearing four rows of radial marks (14, 15, 16 and 17), Fig. 2 (not shown). One pair. of rows is intended for imperial measurements, the other pair is intended for metric measurement. The marks in the rows of each pair are equally spaced but are offset relative to the marks in the adjacent row to be 90 degrees out of phase. Printed circuit boards 10 and 11, containing light sources 21 and detectors 22 respectively are positioned on either side of the disc 9. In front of the disc is a mask (18) Fig. 3 (not shown) comprising two pairs of slits which are 180 degrees out of phase with their corresponding pairs of rows of radial marks on the disc. The outputs from the sensors are fed through a circuit 23 which converts the sine-wave outputs into squarewaves and produces two outputs having a 90 degree phase difference. The outputs are fed to a direction detector and pulse generator circuit 24 which supplies a reversible counter 27 via an arithmetic unit 26 designed to cope with the "imperial" or the "metric" signals. The circuit 24 also supplies a direction change detector 30 and a circuit 31 intended to indicate (on line 32) a zero detecting signal from the reversible counter 27. The reversible counter is connected to a display 28. A detector circuit diagram Fig. 5 (not shown) of one of the circuits within the block 23 is disclosed.
Patent GB-411549-A (GB)
Title: Improvements in and relating to motors, compressors and pumps
IPC: F04B1/24
Filed: 1932-12-15
Abstract: 411,549. Engine, compressor, and pump valves. EDMUNDSON, J. G., 1, Woodleigh Road, Monkseaton, Northumberland. Dec. 15, 1932, No. 35581. [Classes 8 (i) and 102 (i).] A valve for a rotary compressor, engine, or pump comprises a cylindrical body k containing a piston valve m which abuts on an angularly adjustable disc valve n having a pair of opposite segmental ports p, q, communicating with the engine or pump cylinders and with supply and exhaust ports t, u in the piston valve. The disc valve is adjusted by a handle x ; a slipper block w free to slide in the admission port p enables the cut-off to be adjusted according to the direction of rotation. The engine &c. may be of the kind described in Specification 337,351, [Class 102 (i)], embodying rotor blocks at right angles and angular pistons g.
Patent GB-965418-A (GB)
Title: Filter for a transmission system
IPC: H04B3/44
Filed: 1960-10-18
Abstract: 965,418. Telephone transmission systems. WESTERN ELECTRIC CO. Inc. Oct. 18, 1960 [Oct. 30, 1959], No. 35663/60. Heading H4R. In an arrangement in which supply currents are fed over the signal path and are separated at an amplifier, inductance means are included in the inputs and outputs of the amplifier, each means having two coils, both of which are included in the signal path with such polarity as to offer no impedance to the signals, and one only of which is included in the heater circuit so as to offer high impedance to stray signal currents entering the heater circuit. Such stray currents have an adverse effect upon the gainfrequency response of the amplifier. As shown, the amplifier 21 is arranged to amplify high frequencies passing from terminals 11 to 16 and low frequencies from terminals 16 to 11, condensers 47, 48 and inductances 49, 50 being symbolical representations of high- and low-pass filters respectively. Signal currents are developed across and emitted from inductances 17, 19 and heater currents are developed across and emitted from condensers 18, 20. Stray capacities between the input and output circuits occur across transformers 51, 52, between transformers 26, 32 and chassis and also across the windings of these transformers. All these capacities are effectively shunted by connections 57, 60 so that now the only effective stray path for these currents is via these connections and the heater circuit; and this path contains the lower windings only of the inductances 53, 56 which present a high impedance. The signal paths contain also the upper windings of these inductances, and are thus unaffected. Condensers 22a, 22b, 40a, 40b provide D.C. blocking and inductances 41, 42 provide high signal current impedance and a path for the heater current. The latter may be omitted (i.e. left open circuit) and condensers 22b, 40b omitted to provide a path for the heater current in this way, if there is no risk of the heater current saturating the inductances 53, 56.
Patent GB-1077571-A (GB)
Title: Resilient bearing for spin units
IPC: F16C27/06
Filed: 1964-09-01
Abstract: A resilient support for spin-washing and spin-drying machines comprises a resilient belt of intersecting strips (11) connected between two resilient flanges (12), and rigid rings (7, 8) secured in the flanges for fixing the support.  Resilient rings (13) coaxial with the flanges connect the strips (11) to the flanges (12).
Patent GB-427568-A (GB)
Title: Improvements in or relating to processes and devices for automatic arc welding
IPC: B23K9/12
Filed: 1933-12-19
Abstract: 427,568. Uniting by fusion. ELIN AKT.-GES. FUR ELEKTRISCHE INDUSTRIE, 1, Volksgartenstrasse, Vienna. Dec. 19, 1933, Nos. 35772, 35773, and 35774. Convention dates, Dec. 19, 1932, March 4, 1933, and Nov. 15, 1933. [Class 83 (iv)] In automatic arc welding with coated rod electrodes a number of electrodes are rigidly connected with one another and the current conducted thereto only at intervals, the current supply and feeding means being so constructed that uninterrupted fusion of the electrodes is effected without leaving residual waste parts. Conducting clamps 3, 3<a>, 3<b>, may be rigidly or removably fixed to a metal band, wire, rope or chain &c., preferably of copper or its alloys, connected to the source of current and driven by rolls 1, 1 or by toothed rolls 6 in dependence on the voltage of the arc. During feed of the rod 4 by the clamp 3 the rod 5 may be connected to the rod 4 by screwing, dovetailing, pinning, or soldering, and the clamp 3 removed before it reaches the lower limit of its stroke. The electrode core may be bared at the region of the clamp or pins connected to the clamps may be inserted through transverse holes in the core. In a modification the electrodes may be fed by rolls 1, Fig. 2, the current conducting clamps 3, 3a sliding along a fixed contact bar 7. In a further form, Fig. 3, pins 14 engaging in holes in the electrodes 13 either at the overlapped or bevelled ends thereof or at other parts pass between water cooled spring-pressed current conducting bars 15 into a screwed spindle 9 driven by bevel and worm gear from a motor 12 operating in dependence on the arc. In order to enable electrodes to be used in which there is a variation in the distances between the pins, the upper end of the screw may have wide grooves to facilitate entry of the pins and the lower end 17, Fig. 6, is keyed on the part 18 and slidable thereon under control of a spring 19. When the upper pin passes into the thread of normal pitch, the part 17 is pressed down and when the lower pin leaves the part 17, the latter is pressed back by the spring. The pins may be replaced by plates 21, Fig. 8 clamped between the ends of the electrodes. The Specification as open to inspection under Sect. 91 states that long electrodes having a length which is a multiple of that of the spindle 9 may be used provided with pins 14 at intervals, and that electrodes in ring form with pins at intervals may also be used. This subject-matter does not appear in the Specification as accepted.