baber/WOPTO huggingface dataset:
Patent GB-886023-A (GB)
Title: Improvements in or relating to the purification of gases or gaseous mixtures
IPC: F25J3/02
Filed: 1958-06-04
Abstract: <PICT:0886023/III/1> Gas is freed from acid gas by washing first with an aqueous ammonia solution so as to remove the acid gas and secondly with water free of acid gas so as to remove entrained ammonia.  Gases treated may be air and hydrogen produced by the partial combustion of fuel oil, for use in the synthesis of ammonia.  The gas may be treated in a single absorption column, being passed upwards in countercurrent to a stream first of aqueous ammonia and secondly of water.  The absorption column may be packed or contain sieve plates. The water may be freed from acid gases by passage therethrough of nitrogen and/or fuel gases separated from the hydrogen.  As shown compressed air from a line 1 is passed upwards through chamber 2 in countercurrent to aqueous ammonia from line 3 and water from line 4. The washed air after cooling and drying is separated into oxygen and nitrogen.  The oxygen is passed to a burner 40 where a fuel oil is partially burnt to produce hydrogen which after a shift reaction and removal of carbon dioxide is passed from line 49 upwards through an absorption column 30 in countercurrent to aqueous ammonia from line 31 and water from line 28.  Part of the nitrogen is used to free washed hydrogen from absorption column 30 from carbon monoxide and methane, the remainder being admixed with the purified hydrogen and reacted to produce ammonia in plant 57.  A part of the ammonia is passed to columns 2 and 30 and thence to an ammonium sulphate plant 67 and another part is passed directly to the plant 67.  Carbon dioxide and hydrogen sulphide (from the washed air and hydrogen) are evolved from the aqueous ammonia in the ammonium sulphate plant by the addition of sulphuric acid.  The washing water is freed from acid gas in a vessel 21 by the upward passage therethrough from a line 12 of nitrogen separated from the air and/or carbon monoxide and methane washed from the hydrogen.
Patent GB-503210-A (GB)
Title: Improvements in or relating to etching
IPC: B41C1/02
Filed: 1937-06-26
Abstract: 503,210. Etching. SCHUTTE, W. O. P. June 26, 1937, No. 17867. Void. Convention date, June 26, 1936. Drawings to Specification. [Class 100 (ii)] Printing-surfaces especially copper plates or rollers used for fabric printing, are prepared by applying a design thereto in a suitable medium, covering the surface, including the design, with a resist, removing the image medium and the overlying resist to expose the surface, and etching ; after completion of the first etching, a second design, which may overlap the first one, may be applied and differentially etched. According to examples (a) the design is applied by means of a lithographic transfer, the ink is dried by means of an acid resist powder such as resin, asphaltum, or dragon's blood, the plate is heated and subsequently cooled, cleaned with a weak solution of iron perchloride, coated with a solution of shellac, alcohol, and dye, or with a cellulose ester solution, dried, washed with gasoline or other solvent for the lithographic ink which will not dissolve the resist, etched with iron perchloride and the resist finally removed with alcohol; (b) the design may be applied by means of a lithographic pencil; (c) the design is applied by means of a water-soluble paint, and asphaltum is used as the resist ; (d) the asphaltum in example (c) is replaced by printing-ink to which a powdered acid resist is applied ; (e) the surface is coated with a water-soluble paint, the design is applied by means of a lithographic pencil, a resist formed of shellac, alcohol, and dye is applied, and the plate is washed first with gasoline to remove the lithographic-pencil design and overlying resist and then with water to remove the exposed water-soluble layer, etched, and finally cleaned.
Patent GB-197901-A (GB)
Title: Improvements relating to fuel briquettes
IPC: C10L5/20
Filed: 1922-06-29
Abstract: 197,901. Soc. dite l'AvÚbÞne. May 19, 1922, [Convention date]. Composition fuel.-Anthracite, coke &c. in powder form is mixed with the pulverized mass obtained by concentrating bisulphite lye after complete neutralization of sulphurous acid (free or in part combined) contained therein. Water is added if the fuel material is not sufficiently humid to form a plastic mixture. The fuel is compressed into briquettes which are baked up to about 200‹ C. for 20 to 40 minutes. In an example 100 parts of material are mixed with 3 to 3¢ parts of solidified lixivium.
Patent GB-458450-A (GB)
Title: Improvements in or relating to electron discharge device amplifiers
IPC: H03F1/50
Filed: 1935-06-21
Abstract: 458,450. Valve circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Electra House, Victoria Embankment, London, and KEALL, O. E., 32, Rainsford Avenue, Chelmsford, Essex. June 21, 1935, No. 17929. [Classes 40 (iii) and 40 (v)] Resistance-coupled amplifiers for frequencies as low as 0À1 c. /sec. and suitable for use with cardiographs and the like are provided with a resistance 9, which may be 1M#. in the example described,- shunted by a capacity 10 of 1ÁF. and connected in series with the coupling resistance 8 of 0À1 M#. for the purpose of giving the coupling a large time constant. The network 8, 9, 10 is connected to the grid side of the coupling condenser 7 so that anode current does not flow through it. Curve E, Fig. 3, show the gain plotted against frequency when the mesh 9, 10 is omitted, while curves D, F show the effect of the mesh with a large and a small value, respectively, of condenser 10. Thus the device can have a high-pass or a bandpass filtering effect. The low-frequency cutoff can be sharpened by the addition of inductance in parallel with the mesh 9, 10.
Patent GB-827918-A (GB)
Title: Improvements relating to exhaust duct structures, and the fitting of thermocouples thereto
IPC: F01D17/08
Filed: 1958-06-05
Abstract: 827,918. Jet propulsion plant. GENERAL MOTORS CORPORATION. June 5, 1958 [June 6, 1957], No. 17986/58. Class 110 (3). [Also in Group XXXVIII] The exhaust duct of a gas turbine comprises an outer wall 1 and an inner conical member 9 which is in two sections 11, 13 and terminates in a hemisphere 15. The inner member is fastened by struts 17 and a central tube 19 which in turn is attached to a cone-shaped plate 21. The two sections of the inner member have semicircular notches to form circular apertures through which pass thermocouple probes 31 (see Group XXXVIII). 827,945. Gas turbine plant. GENERAL MOTORS CORPORATION. Jan.30, 1958 [Jan 30, 1957], No.3209/58. Class 110 (3). [Also in Groups XI and XII] In a gas turbine engine, the combustion chamber has concentric walls which extend between the compressor and turbine to define an annular space, a continuous ring of flame tubes being disposed in the annular space, and the flame tubes being skewed in relation to the compressor - turbine shaft so that the gases flowing in the flame tubes have a circumferential component of velocity. The engine shown in Fig. 1 has a compressor, the final rotor disc of which is shown at 16, and a turbine, the first stage rotor disc of which is shown at 21, the compressor and turbine being interconnected by shaft 19 mounted in bearings 17, 22. The air discharging from the compressor passes between straightening vanes 23 to a diffusing section 24 defined between walls 12 and 26, the wall 26 having an extension 27 which is connected to the shaft bearing 22, also to the turbine inlet guide vane shroud 34. Radially-spaced concentric walls 73, 74 are disposed in the annular space between the walls 12 and 26, 27 and define an inner annular space in which two rows of helicallydisposed flame tubes 67, 68 are mounted. The annular space between walls 73, 74 is open at its upstream end at 63 and affords a diffuser section between walls 61, 62 for primary combustion air. Inlet openings 77 and 78 are provided in the walls 73, 74 for cooling and dilution air, and the outlet of the combustion space between walls 73, 74 is to the turbine inlet nozzle guide vanes 32. The flame tubes are frusto-conical form, circumferentially-adjacent tubes being connected at their downstream ends. At their inlets, the flame tubes have swirl vanes 83 and fuel nozzles 72 disposed axially of the flame tubes. In one embodiment the swirl vanes of the outer row of flame tubes are disposed so as to swirl in an anti-clockwise direction and those of the inner row are disposed so as to swirl in a clockwise direction. In a second embodiment the swirlers of alternate flame tubes in both the outer and inner rows are arranged to swirl in opposite directions. In a further embodiment in place of axiallydirected fuel injectors in the flame tube inlets, one fuel injector is disposed between each pair of flame tubes, fuel being injected along the common tangent between the flame tubes.
Patent GB-569912-A (GB)
Title: Improvements in and relating to indicator gauges and like instruments
IPC: G01B3/22
Filed: 1943-12-18
Abstract: 569,912. Linear-dimension gauges; indicating-instruments. CHARLES, A., and SMITH METERS, Ltd. Dec. 18, 1943, No. 18007. [Classes 106 (ii) and 106 (iv)] The pointer pivot of a dial indicator or other indicating instrument is made adjustable, with reference to the instrument frame, in the direction of the length of the pointer, so that the distance between the pointer pivot and the position of engagement of the pointer with its operating lever may be varied. The invention is shown applied to the dial gauge described in Specification 569,911. The pointer 23 pivoted at 40 is moved by an operating lever (not shown) engaging a pin 38 on a crank arm also pivoted at 40, the crank arm being adjustably connected to the pointer by the screw shown. The pointer pivot 40 is carried in arms 68, 69 rigidly connected by pins 75 and carried on the gauge framework by a pivot stud 67 and a stud 66 engaging slots 74 in the arms. One arm 69 is extended to form a portion 76 having a slot 77 engaged by an eccentric 78, the arms 68, 69, and thus the position of the pointer pivot 40, being adjusted by adjusting the eccentric. In a modification, the pointer pivot is carried by two arms, each having two slots whereby the arms can be adjusted and then fixed by studs passing through the slots.
Patent GB-1469056-A (GB)
Title: Coupling unit for the frictional connection of a shaft to a component disposed concentrically thereto
IPC: F16D1/093
Filed: 1975-04-30
Abstract: 1469056 Mounting hubs on shafts RING- FEDER GmbH 30 April 1975 [14 Sept 1974] 18054/75 Heading F2U A friction coupling, for mounting a hub 7 on a shaft 8, comprises a pair of rings 1, 2 having complementary frusto-conical surfaces 1b, 2c respectively, one ring, 2, having a flange 2a through which screws 5 pass to enter bores 6 of the ring 1 and so axially stress the rings to cause a cylindrical surface la of ring 1 to frictionally grip the hub 7 as shown in Fig. 2 or to cause the ring 2 to compress the hub 7 on to the shaft, as shown in Fig. 7. The ring 1 has a chamfered surface 1c and the flange 2a has a surface 2b parallel to the chamfer. The frusto-conical surface 2c of ring 2 and the flange 2a have a cylindrical surface 2d between them. The flanged ring can be the outer ring, with the flange extending radially inwards (Fig. 3, not shown). The ring 1 may have two frustoconical surfaces and two rings 2 may engage it (Figs. 4 and 5, not shown). Screws 4 may pass through holes 3 of the flange 2a to engage surfaces 1d to facilitate dismantling. The rings 1 and 2 may be axially slotted. The hub 7 may be of a pulley. The flange 2a may extend radially beyond the surface la for axial location of the hub 7 (Fig. 6, not shown).
Patent GB-1253425-A (GB)
Title: A process for the production of a halogen-substituted aromatic mercapto compounds
Filed: 1969-04-09
Abstract: 1,253,425. Halogenated aromatic mercaptans. FARBENFABRIKEN BAYER A.G. 9 April, 1969 [11 May, 1968], No. 18077/69. Heading C2C. A process for the production of a halogensubstituted aromatic mercapto compound comprises reacting a disulphide of the formula in which X represents a halogen atom, R represents a substituent that is stable under the reaction conditions n is 1, 2 or 3 and b is 1 or 2, under pressure with hydrogen at temperatures of from 60‹ C. to 250‹ C. in the presence of a catalyst comprising, Raney nickel, Raney cobalt, ruthenium, rhodium, palladium, osmium, iridium, platinum or the sulphides or polysulphides of these metals; the reduction being carried out in an inert diluent or on the molten disulphide the reduction being continued in the presence of the mercapto compound formed during reduction. Examples disclose the preparation of 4-chloro-; 4-bromo-; 2,5-dichloro-; 4,6-dichloro-3-methyl-; 2,4,6- trichloro-3-hydroxy and 4-chloro-2-amino-thiophenol.
Patent GB-573389-A (GB)
Title: Improvements in and relating to the recovery of cuprous and ferrous materials from scrap
IPC: C22B7/00
Filed: 1943-11-02
Abstract: 573,389. Recovering copper and iron from scrap. WILKINS, R. A., and BUNN, E. S. Nov. 2, 1943, Nos. 18115 and 18116. Convention dates, Nov. 3, 1942, and April 15, 1943. [Class 82 (i)] A method of separately recovering the cuprous and ferrous constituents of scrap consisting of low carbon steel welded to or associated with copper or brass, comprises melting the scrap, enriching the ferrous content with carbon and allowing the cuprous and ferrous constituents to separate by stratification from the melt. Alternate layers of scrap 1 and coke 3 are fed to the upper part of a furnace 5 containing ignited coke. Appreciable quantities of manganese and/or silicon may be added with the scrap to degasify the molten material and increase its fluidity. These two elements, may be added in the form of ferro-manganese and ferro-silicon respectively, so that molten ferrous metal is enriched with about 0.1-1 per cent of manganese and/or about 0.5-5 per cent of silicon ; preferably about 0.5 per cent of manganese and 1.5 per cent of silicon when the carbon content is at least about 1.75 per cent. An ascending blast of air burns the coke, producing carbon monoxide and melting the scrap, the ferrous content of which is enriched with carbon by contact with the carbon monoxide. The molten material collects in the conical hearth 19 where it stratifies into an upper layer of slag, a middle layer containing principally iron and a lower layer containing principally copper. The zinc content of the scrap is distilled in the furnace and is removed through the conduit 17. Each layer may be drawn off separately through the tapping holes 25, 23 and 21, or the whole molten mass may be transferred to a holding furnace where it remains in a quiescent molten condition until stratification is complete. Other forms of melting furnaces, for instance, cupola furnaces, may be added to carry out the process and other known methods of carburizing iron may be employed.
Patent GB-283911-A (GB)
Title: Improvements in or relating to separating or extracting cellulose or paper pulp fromraw materials
IPC: D21C11/06
Filed: 1927-07-08
Abstract: 283,911. Godfrey, Sir G. C., Benthall, E. C., Tarlton, E. S., and Wheeler, H, F., (trading as Bird & Co.), Scott, G. L., and Spencer, E. Jan. 20, 1927, [Convention date]. Pulp, preparation of.-To economise working in extracting cellulose or paper-pulp from fibrous vegetable material such as bamboo, wood, grass, straw, reeds, or jute waste by digestion, the steam from a digester in which the process is complete is passed into one which is being or has been freshly charged to heat the charge and any associated liquor. The steam is taken from the top of the first digester and led into the bottom of the second. The digesters A, B, C are provided with connections 1a, 1b, 1c to the common exhaust main 3, inlet pipes 6 from the live steam main 8, connections 4a, 4b, 4c between the exhaust main 3 and the inlet pipes 6 and control valves 2a, 2b, 2c; 5a, 5b, 5c; 7a, 7b, 7c. Additional piping for the supply of digesting liquor or washing water may be provided. Reference has been directed by the Comptroller to Specification 6999/95.
Patent GB-129721-A (GB)
Title: Improvements in or relating to the Treatment of Smoke and Fume or other Dust Laden Gas.
Inventor: GIBBS WILLIAM EDWARD
IPC: B01D46/12
Filed: 1917-12-07
Abstract: 129,721. Gibbs, W. E., Gilderson, R. J., and Adams, H. E. F. Goold-. Dec. 7, 1917. Scrubbers and washers.-A fluid or gas is injected into waste gases &c. carrying in suspension finely divided particles of value whereby the particles are caused to form aggregates which remain in suspension in the gases until intercepted and retained by baffles or filters so that their values may be recovered. The waste gases are passed by a flue a to an expanding-chamber b, where a fluid, such as steam, is injected through nozzles c, c<1> in a direction normal to the direction of flow of the gases, which then pass to metal baffles or filters d which intercept the aggregated particles. To intercept tarry particles, metal baffles are used, but for particles such as zinc oxide filters of textile material are preferable. The filtrate falls from the chamber e through openings f<2> to hoppers f<3>.
Patent GB-543637-A (GB)
Title: Electromagnetic sewing machines
IPC: D05B69/10
Filed: 1940-12-30
Abstract: 543,637. Dynamo-electric machines. FAIRWEATHER, W. C. (Singer Manufacturing Co.). Dec. 30, 1940, No. 18205. [Class 35] [Also in Group VII] The needle-bar of a sewing-machine is separately actuated, being moved downwards in four steps and upwards in two steps by a solenoid motor. Three coils 13, 14, 15 are located between steel discs 8-11 enclosed by a steel shell 16 and an armature 25 is fixed upon the needle-bar 5. For the downward stroke the coils are energized in the following sequence :-coil 13 alone, coils 13, 14 together, coil 14 alone, coil 15 alone. For the upward stroke the sequence is :-coils 13, 14 together, coil 13 alone. The circuits are closed by contacts on the motor-driven under-shaft of the sewing machine.
Patent GB-1262215-A (GB)
Title: Harmonograph
Inventor: WULF THORNTON EDWARD
IPC: B43L11/00
Filed: 1970-04-16
Abstract: 1,262,215. Coin operated harmonographs. T. E. WULF. 16 April, 1970 [21 April, 1969], No. 18324/70. Heading G4V. [Also in Division B6] A coin operated harmonograph wherein a pen 72 traces the movement of a harmonically swinging platform 50 comprises an arm 74 which may be lowered by gravity to the solid line position shown on energization of a solenoid 89 for a period governed by a cam 105 and switch 104 in response to insertion of a coin into coin acceptreject mechanism 92 including magnets to reject ferrous, material, sizing gates and a weighing station (all not shown). The arm is in two parts 74-1, 74-2 interconnected either by a spring 118 or in a modification (Figs. 8, 9, not shown) by a magnetic connection to prevent use of the harmonograph without paying by rendering the arm part 74-1 unstable if lowered by force.
Patent GB-590187-A (GB)
Title: Improvements in or relating to the treatment of milk or milk products
IPC: A23C9/13
Filed: 1944-09-27
Abstract: To milk, skim milk, cream, buttermilk, condensed whole or skim milk, evaporated milk, sweetened condensed milk, or chocolate or malted milk, containing, if desired, whey, there is added, in quantity sufficient to produce pH7, a mixture of substances present in the ash of milk, which ash is of composition, in relative proportions by weight, potassium oxide 0.175, sodium oxide 0.070, calcium oxide 0.140, magnesium oxide 0.017, iron oxide 0.001, sulphur trioxide 0.027, phosphoric pentoxide 0.170, chlorine 0.100, the mixture comprising at least sodium oxide, calcium oxide and magnesium oxide, and thereafter is added, in quantity sufficient to bring the lactic acid content to 0.10-0.15 per cent., a medium, preferably a portion of the milk or milk product itself, in which a lactic acid-producing bacillus, e.g., B. helveticus, bulgaricus or acidophilus, has been cultured.  According to the Specification as open to inspection under Sect. 91 the milk products include cheese, e.g., Cheddar, Swiss, Roquefort, Limburger, process brick cottage cheeses, and cheese spread.  This subject-matter does not appear in the Specification as accepted.
Patent GB-404215-A (GB)
Title: Improvements in sewing machines
IPC: D05B23/00
Filed: 1933-06-30
Abstract: 404,215. Sewing-machines. MITTENZWEI, P., 34, Zwotzenerstrasse, Gera, Germany. June 30, 1933, No. 18647. [Class 112.] In a linking-machine, the looper shaft 26 has a head with a slidable fork carrying a pivoted rod operated by an eccentric on the main shaft for reciprocating the fork. The main shaft 1 carries an eccentric 3 which reciprocates the rods 4, 5. The rod 4 is pivoted to the fork 7 which is slidably guided on and controls the head 27 of the looper shaft 26. The pivot which connects the fork 7 and rod 4 also engages one end of the guide link 6 pivoted at 8 to the machine frame. When the fork 7 is reciprocated by the rod 4 on the head 27, the link 6 is turned about its pivot and causes the fork to rock together with the shaft 26 and looper 9. A roller 28 on the head 27 bears against a rigid cam 29 and co-operates with a spring 30 for imparting axial reciprocation to the looper shaft. The eccentric 3 reciprocates the rod 5 to rock a lever 11 pivoted at 10 to the frame. This lever has a slot 17 which engages a pin 16 on the upper end of a rod 12. The rod 12 has a fork 13 on its lower end which effects feeding movements to a spiked wheel, through the ratchet 15 and pawl 14.
Patent GB-973513-A (GB)
Title: Sealing washer
IPC: F16B43/00
Filed: 1962-05-15
Abstract: 973,513. Joint-making packing; washers. PRECISION RUBBER PRODUCTS CORPORATION. May 15, 1962 [May 15, 1961], No. 18671/62. Headings F2B and F2H. A sealing washer comprises an elastomeric sealing ring 12 secured to an inner portion 15 of a rigid support ring 11, the sides 25, 26 of the elastomeric ring 12 diverging axially outwardly from an outer portion 14 of the ring 11 to terminate in opposite sealing lips 28, 29 radially inward of the portion 15 and the bore of the ring 12 having a centring rib 36. Flat portions 30 are formed at the junction of the ring 12 and the portion 14. The portion 15 has arcuate slots 18 therethrough and the ring 12 which may be of natural or synthetic rubber is pressure moulded to the portion 15 so that integral connecting and locking webs 20 are formed in the slots 18. The support ring 11 is preferably of metal, for example, stainless or cadmium plated steel, brass or aluminium. In use, the rib 36 closely fits the shank of a part, e.g. a rivet 40, Fig. 7, to be sealed and the lips 28 and 29 are deformed as shown when the washer is compressed between the rivet head 41 and a plate 42.
Patent GB-1286394-A (GB)
Title: Polyethers containing gem-dithioether and monosulfide linkages and polyurethanes therefrom
IPC: C08G75/14
Filed: 1970-04-20
Abstract: 1286394 Polyethers; polyurethanes THIOKOL CHEMICAL CORP 20 April 1970 [26 May 1969] 18822/70 Addition to 1086977 Heading C3R Polyethers containing gem-dithioether and monosulphide linkages have the general formula in which x = 2 to 6, m and n are positive integers, r and s are 0 or; the R's which may be the same or different are selected from H, CH 3 , CH 2 Cl, CHCl 2 , CCl 3  and Q; the Q's which may be the same or different are selected from C 2-25  alkylene, arylene, cycloalkylene or aralkylene radicals which may be interrupted by O, S, CO or olefinic groups and which may have pendant hydrocarbon or halogen groups. Typical polymers have the structure: (In which p is an integer.) Polyurethanes may be prepared by reaction of the polyethers in an NCO/OH ratio of 0À75:1 to 3À0:1. NCO-containing propolymers may be chain extended by reaction with a polyhydric compound, e.g. trimethylolpropane.