baber/WOPTO huggingface dataset:
Patent GB-1081805-A (GB)
Title: Method of regenerating hydrochloric acid
Inventor: HAKE ANDREAS
IPC: C23G1/36
Filed: 1966-01-13
Abstract: Spent hydrochloric acid from metal pickling baths is regenerated by heating the acid to at least 80 DEG  C., spraying the heated acid into the flames from gas burners in a furnace, separating the resulting solid phase from the gaseous phase and recovering hydrochloric acid from the gaseous phase component by cooling.  The spent acid may be pre-heated to a temperature above its boiling-point, owing to the elevated pressure in front of the spray nozzles, and the heating may be effected by contact with the gaseous phase component from the furnace. The pre-heating may be carried out in a heat exchanger supplied with spent acid in a recirculating circuit from a buffer tank.  The hydrochloric acid may be recovered in a fractionating column.  The separated solid phase is practically pure metal oxide, e.g. Fe2O3.
Patent GB-1298861-A (GB)
Title: The purification of tail gases from sulphur production
IPC: C01B17/05
Filed: 1970-01-13
Abstract: 1298861 Purification of tail gases FOSTER WHEELER Ltd 13 Jan 1970 [16 Jan 1969] 1686/70 Heading C1A Tail gases containing H 2 S and SO 2  are contacted with an aqueous solution of an absorbent wherein they react in the presence of the water as catalyst to form sulphur which can be recovered, the temperature of the tail gases being reduced to essentially the dew point during the contact with the absorbent. The aqueous absorbent is an aqueous solution, of a solute of low vapour pressure, the addition of which increases the solubility of H 2 S. Solutes specified are K 3 PO 4 , K 2 CO 3 , Na 3 PO 4 , Na 2 CO 3 , NaAsO 3 , NaAsO 5 , amines, and organic salts such as phenates. The reaction between H 2 S and SO 2  may take place directly, or each may form a salt with the solute and the two salts react to form sulphur and regenerate solute. In the reaction sulphur is formed as a slurry and may be recovered from the said slurry by filtration, settling separation, or by heating to 250-275‹ C. to melt the sulphur depending on the state in which the recovered sulphur is required.
Patent GB-553520-A (GB)
Title: Method of and apparatus for the manufacture of electrodes for apparatus for the electrical precipitation of suspended particles from gaseous fluids
IPC: B03C3/41
Filed: 1942-02-09
Abstract: 553,520. Electrostatic precipitation apparatus. LODGE-COTTRELL, Ltd. (International Precipitation Co., Inc.). Feb. 9, 1942, No. 1702. [Class 39 (i)] [Also in Group XXII] In the manufacture of electrodes for gas cleaning apparatus as described in Specification 553,420, and comprising a rod, tube &c. of substantial dimensions from which project loops or prongs of very fine wire, the wire is formed into loops and then secured between two parts forming the rod &c. by welding, soldering, brazing, screwing, interlocking &c., so as to leave part of the loops projecting. The loops may be severed and straightened out to form prongs. As shown in Fig. 2 ,the fine wire is looped around pins 11, 12 carried by a base member 10. A two part clamp comprising hinged members 13a, 13b is first placed on the base, with the pins 12 passing through holes 15 in the member 13a. After the wire is looped round the pins, the clamp is closed and secured on the loops and removed from the pins. The part of the loops projecting from the clamp is then secured between two parts 20a, 20b, Fig. 4, of the rod forming part of the electrode and the clamp removed. Fig. 6 shows an arrangement in which the wire is looped around pins 31, directly over one half 20b of the supporting member. The complementary half 20a of the support is secured in place, and the whole is removed from the pins and soldered. Where the loops or prongs project in a plane at right angles to the length of the support member, the clamp consists of two annular members 40, 44, Fig. 17, the member 44 carrying pins 41 which are received in recesses in the member 40. A removable central block 42 also carries pins 43. The wire is wound about the pins 41, 43 into a flat annular form ; the outer part is clamped by the member 43 ; the central block is removed, and the inner parts of the loops then secured between two parts of the supporting member. The clamp is then detached.
Patent GB-563766-A (GB)
Title: Improvements in method of preparing sulphanilyl guanidine
IPC: C07C311/64
Filed: 1943-02-02
Abstract: Sulphanilyl guanidine is prepared by fusing together an acyl-sulphanilyl cyanamide or a salt thereof and a compound which liberates ammonia at a temperature below the decomposition point of the final product.  Acyl derivatives of sulphanilyl cyanamide which are mentioned as starting materials include the acetyl, propionyl, benzoyl, and nicotinyl compounds.  The preferred salts are the calcium salts.  As compounds liberating ammonia, there are mentioned ammonium nitrate, thiourea, ammonium carbonate, ammonium carbamate, ammonium acetate, ammonium cyanate, ammonium thiocyanate and urea. In examples: (1) calcium acetyl sulphanilyl cyanamide is heated to 200 DEG  C. for 15 minutes with ammonium nitrate and the N4-acetylsulphanilyl guanidine so produced, hydrolysed with 3-N-hydrochloric acid.  (2) Calcium acetylsulphanilyl cyanamide is heated for 10 minutes to 200 DEG -220 DEG  C. with thiourea and the product saponified as in example (1).
Patent GB-125925-A (GB)
Title: Improvements in or relating to Prism Periscopes.
Inventor: REINER JOHN BATIST
IPC: G02B23/08
Filed: 1919-01-23
Abstract: 125,925. Reiner, J. B. Jan. 23, 1919. Periscopes.-I n periscopes, the upper prism 4 is seated on a carrier 2 which is detachably secured to a tubular body 1, the carrier having an apertured wall 5 against which the incident surface of the prism surface bears and side and rear lugs or flanges which position the, prism. A prism box 9 rests on a flange 8 and is detachably secured to the carrier, a thin metal plate 12 bearing springs 13 being interposed between the box 9 and the reflecting surface of the prism. The lower prism 26, shown separately in Fig. 8, is mounted in a box 17 having a stem 16 secured to an object glass tube 15 which is held by a set-screw within the body 1. The prism 26 is held by a spring 32 so that a groove 30 formed in the prism engages a rib formed on a seating for the horizontal face of the prism. A split collar 20 surrounds the objectglass tube 15 and has lugs 21 between which is inserted the end of a spear or support 22 which may be pushed into the wall of a trench &c. A clamping-screw 23 secures the lugs and spear and may be released to permit the periscope to be turned about the axis of the body 1.
Patent GB-727350-A (GB)
Title: Sheet metal encased stators for electrical machines
IPC: H02K1/18
Filed: 1953-01-21
Abstract: 727,350. Core constructions. KLEINSCHANZLIN-PUMPEN AKT.-GES. Jan. 21, 1953 [Jan. 21, 1952; Dec. 10, 1952], No. 1770/53. Class 35. A laminated stator 1 is encased in a sheet of metal casing 3 which is pressed into longitudinal grooves 2 on the cylindrical outer surface of the stator laminations which are held together by end rings 6 having annular grooves 5 with which inwardly bent ends 4 of the casing engage. The stator laminations are first placed upon a mandrel, then pressed and finally encased, as described above. Additional grooves 8 (Fig. 4, not shown) may be provided in the rings 6 to obtain greater connection between the latter and the casing 3. A corrugated metal sheet 9 is arranged to surround the casing 3 to which it is welded at the points of contact. The sheet 9 is interrupted near the grooves 2 and further subdivisions may be made as shown in Fig. 6. The ribs of the sheet 9 may be arranged with adjacently disposed inner surfaces as in Fig. 7 (not shown).
Patent GB-1338822-A (GB)
Title: Method for applying particulate material to a woven fabric
IPC: D06P1/92
Filed: 1971-01-14
Abstract: 1338822 Coating process DOW CHEMICAL CO 14 Jan 1971 [16 Jan 1970] 1866/71 Heading B2E A method for applying a solvent-insoluble particulate material to a woven fabric comprises applying to the fabric a suspension of the particulate material in a halo-carbon or halo-hydrocarbon solvent boiling within the range 5-125‹C and removing the solvent by passing the treated fabric into a zone of heated vapour of the solvent wherein the particulate material is adhered to the substrate by means of a film-forming material applied either dissolved in the suspension or subsequent to the foregoing steps, dissolved in a halo-carbon or halo-hydrocarbon boiling at 5-125‹C followed by removal of the solvent by passing the treated fabric into heated vapour of the solvent. Preferably the fabric is of fibreglass. The particulate material may be a dyestuff or pigment and the vapour of the solvent may be superheated. Numerous suitable solvents are specified, particular preferences being methylene chloride, 1, 1, 1-trichloroethane, trichloroethylene and perchloroethylene. Suitable filmforming materials include polyethylene, polypropylene, chlorinated polyethylene and copolymers of vinyl chloride and vinylidene chloride, such as those containing 25-80 weight percent of vinyl chloride and 75-20% by weight of vinylidene chloride. In an Example a fibreglass fabric is treated with a phthalocyanine green pigment dispersed in 1, 1, 1- trichloroethane and the solvent removed by passing the pigmented fabric through a zone containing vapours of the same solvent. The so-pigmented fabric was then treated with a solution of an 80:20 weight per cent copolymer of vinylchloride and vinylidene chloride and again passed through the vapour zone to remove the solvent. The pigment formulation was applied with a doctor blade and the fabric remained in the vapour zone for 10 seconds before being immediately sprayed with the copolymer solution.
Patent GB-601438-A (GB)
Title: Improvements in or relating to mining machines
IPC: E21C35/20
Filed: 1946-01-19
Abstract: 601,438. Mining-machines. LOGAN, W. A., and LOGAN MINING MACHINERY CO., Ltd. Jan. 19, 1946, No. 1899. [Class 68 (i)] In a mining-machine of the cutter-chain loader type, two paddle wheels 1, 2, with coned bosses 3, are provided in casings 4, 5 ; the undercutting chain 6, which is inclined upwardly and rearwardly, delivers cuttings or gum to casing 5 while a circulating conveyer 9, also inclined, delivers cutting from the shearing cutter chain 10 to the casing 4, the paddle wheels 1, 2, delivering the cuttings through apertures 7, 8, to a face conveyer. Specification 559,177 is referred to.
Patent GB-409468-A (GB)
Title: Improvements in or relating to fishing reels
IPC: A01K89/033
Filed: 1933-01-20
Abstract: 409,468. Fishing. HARDING, W. E., and MODERN ARMS CO., Ltd., 58, Southwark Bridge Road, London. Jan. 20, 1933, No. 1912. [Class 48.] A clutch for connecting a spool 9 to a winding plate 6 comprises pivoted shoes 20 which are brought into engagement with the spool edge 26 by a plunger-actuated cam 24. The spring plunger 27 is retwined in its inoperative position by a catch 31. The spool brake comprises a band spring 10 which is housed in a recess between and end-plate 1 and the spool 13. A pivoted arm engages the brake lever and holds it in any position. The spool is mounted by a ball-bearing on a fixed sleeve 2.
Patent GB-413709-A (GB)
Title: Improvements in or relating to process of and apparatus for making ketene
IPC: C07C45/88
Filed: 1933-01-20
Abstract: In the production of ketene, a substance capable of yielding it, such as acetone, is passed through a metallic preheating chamber made of a material resistant to heat and oxidation, such as iron-chromium alloys, and then through a metallic reaction chamber made of a material free from iron, nickel, and related metals and having a melting point above about 800 DEG  C.  The reaction chamber may be of copper.  Acetone is supplied from a tank 9 by way of a pump 11 and pipe 10 to a vaporizing section 12 which may be of steel or iron in which the acetone is vaporized and reaches a temperature not exceeding about 300 DEG  C. at a point 14.  The vapour then passes into a part 15 which may be of iron-chromium alloy in which it attains about 500 DEG  C., and may reach 575 DEG  C. at the point 16; the vapour then passes to the cracking-tube or reaction chamber 17 which is <PICT:0413709/III/1> preferably of copper, and may be protected by a shell 18 of more resistant material such as iron-chromium alloy.  The temperature of the vapours at the outlet of the cracking tube may be 650 DEG  C., the pressure may be about 5 lb. per square inch, and the time of exposure of the vapour to the cracking temperature may be 0,25 to 0,75 seconds as described in Specification 377,574.ALSO:<PICT:0413709/IV/1> In the production of ketene, a substance capable of yielding it, such as acetone, is passed through a metallic preheating chamber made of a material resistant to heat and oxidation, such as iron-chromium alloys, and then through a metallic reaction chamber made of a material free from iron, nickel, and related metals and having a melting point above about 800 DEG  C.  The reaction chamber may be of copper.  Acetone is supplied from a tank 9 by way of a pump 11 and pipe 10 to a vaporizing section 12 which may be of steel or iron in which the acetone is vaporized and reaches a temperature not exceeding about 300 DEG  C. at a point 14.  The vapour then passes into a part 15 which may be of iron-chromium alloy in which it attains about 500 DEG C., and may reach 575 DEG  C. at the point 16; the vapour then passes to the cracking-tube or reaction chamber 17 which is preferably of copper, and may be protected by a shell 18 of more resistant material such as iron-chromium alloy. The temperature of the vapours at the outlet of the cracking-tube may be 650 DEG  C., the pressure may be about 5 lb. per square inch, and the time of exposure of the vapour to the cracking-temperature may be 0,25 to 0,75 seconds as described in Specification 377,574.
Patent GB-609043-A (GB)
Title: Tobacco pipe
IPC: A24F1/00
Filed: 1946-01-21
Abstract: 609,043. Tobacco pipes. CHEVASSU, E. Jan. 21, 1946, No. 1982. Convention date, Feb. 2, 1945. [Class 130] A tobacco pipe mouthpiece 4 is locked to the stem 1 by a spigot 3 with a spring- pressed locking lug 5 which moves in notches 6 to lock the mouthpiece to a member 2 press-fitted in the stem. The member 2 has notches 8 for insertion of the lug 5, which rides up inclined portions 10 of the end of member 2 against the force of a spring 7 until it clicks into positioning notches 11, the spring 7 maintaining the lug 5 pressed against the member 2 and locking the mouthpiece to the stem.
Patent GB-104178-A (GB)
Title: Improvements in Motor Attachments for Boats.
Inventor: JOHNSTON WILLIAM JAMES
Filed: 1917-02-12
Abstract: 104,178. Johnston, W. J., and Hodgson. J. R. C. Feb. 12, 1916, [Convention date]. Screw propellers; shafts, arrangement of. - The propeller 9 and its shaft 10 are capable of being raised from the position shown so as to be completely housed within the casing 2. This is permitted by fitting a universal joint 8 and lifting by the arm 14. Doors 26, 27 afford access to the casing 2.
Patent GB-595418-A (GB)
Title: Improvements in or relating to systems for continuously measuring the power output of a rotating shaft
IPC: G01L3/10
Filed: 1945-01-26
Abstract: 595,418. Dynamometers. WESTING- HOUSE ELECTRIC INTERNATIONAL CO. Jan. 26, 1945, No. 2132. Convention date, Nov. 19, 1942. [Class 106 (ii)] , [Also in Group XXXVIII] A system for continuously measuring the power output of a rotating shaft comprises a rotor assembly secured to rotate with the shaft, a stationary member disposed in close proximity to the rotor assembly, electrical coil means associated with said stationary member, means for producing a potential varying in magnitude with the speed of rotation of the shaft for energizing said electrical coil means which arc in flux linkage with said stationary member and said rotor assembly upon energization thereof, means included in the rotor assembly for changing the value of the flux linkage by an amount corresponding to the torque of said shaft thereby changing the value of a voltage in said electrical coil means, and means for measuring the voltage in said coil means, whereby the power output of said shaft is indicatecl. A rotor assembly 3 comprises a pair of axially spaced torque rings 7 and 9 and a reference ring 11 secured on non-magnetic bushings to a shaft 1, the power output of which is to be measured. Each of the torque rings 7 and 9 has a plurality of axially extending fingers 15, 17 which are of sufficient length to overlap the extremities of axial fingers 13 on the reference ring 11 forming small air gaps 19 and 21 as shown. When the shaft 1 is transmitting torque the size of the air gaps 19 9 and 21 will change due to torsional deflection of the shaft, the air gaps- 19 increasing and the air gaps 21 decreasing or vice versa depending on the direction of twist of the shaft. The rotor assembly 3 co-operates with a stator member 5 comprising an outer annular shell 23 having secured therewithin axially spaced ring elements 25, 27, 29 positioned to form air gaps 31, 33 and 35 respectively with the rotor assembly 3. A pair of annular coils 37 and 39 'are positioned within said ring elements 25, 27, 29 as shown and are energized with a voltage produced by a generator 45 which is driven by the shaft in any convenient manner. An inverter 44 converts the D.C. voltage of generator 45 to A.C. to energize the coils 37 and 39, which are each connected as one leg in a conventional bridge circuit which is balanced for the condition of no load on the shaft 1, and creates a flux across the air gaps 31, 33, 35 and 19, 21. When the shaft 1 is transmitting a load the voltage in the coils 37, 39, which is proportional to the speed of the shaft 1 since the generator 45 is driven by the shaft, is varied by reason of the change in the air gaps 19 and 21, previously explained, causing the flux in the path round the coils (see Figure) to be changed to vary the voltage in the coils proportionally to the speed and torque. This change in voltage is measured so giving a measure of the power output of the shaft.
Patent GB-1523852-A (GB)
Title: Paper having colour-developer properties
IPC: B41M5/145
Filed: 1977-01-20
Abstract: 1523852 Recording sheet FELDMUHLE AG 20 Jan 1977 [20 Jan 1976] 02314/77 Heading D2B A recording paper having colour developer properties comprises cellulosic fibres and from 3 to 30% by wt. of colour-developing asbestos fibres, based on the total wt. of fibrous material in the paper, at least some of the fibres of the paper being encapsulated by a film derived from at least one hydrated colloidal film-forming clay. Advantages specified include the advantage of not having to apply a colour-developer coating.
Patent GB-237859-A (GB)
Title: Improvements in and relating to sparking plugs
IPC: H01T13/16
Filed: 1925-01-26
Abstract: 237,859. Soc. Deschamps et Hoffmann. Aug. 2, 1924, [Convention date]. Void [Published under Sect. 91 of the Act]. Sparking - plugs. - The central electrode 6 is hollow, its inner end being closed by a ball valve 8 except on the suction stroke of the engine. The valve is protected from the explosion gases by being placed within a chamber formed in the end of the electrode and closed by a screwed member 10. Passages are formed in the member 10 which also has a mushroom-shaped head forming one of the sparking terminals. The bore of the central electrode is reduced in the neighbourhood of the valves. Starting fluid may be introduced by way of the cup 14.
Patent GB-844386-A (GB)
Title: Improvements in or relating to the controlling of the moisture content of a travelling web of paper, pulp or board
IPC: D21F1/00
Filed: 1957-01-23
Abstract: 844,386. Controlling the moisture content of paper. LIPPKE, P. Jan. 23, 1957 [Jan. 26, 1956], No. 2436/57. Class 96. In controlling the moisture content of a travelling web of paper or paper-board in a paper-making machine, a moisture meter 1, located at the end of the drying section, is moved periodically across the web to measure its moisture content in successive transverse areas. The measurements are recorded on a strip 2 and fed to apparatus 3, which controls the amount of water sprayed, by sprays or brush sprinklers 9, on to parts of the web corresponding to the said transverse areas and/or the amount of pulp supplied through corresponding portions of a sluice 14, to the forming section of the machine. The apparatus 3 comprises an adjustable device 10 by means of which a desired value for the moisture content of the paper or paper-board can be selected.
Patent GB-766755-A (GB)
Title: Weft-feeding apparatus for weaving looms
IPC: D03D47/24
Filed: 1955-01-27
Abstract: 766,755. Gripper shuttle looms. SULZER FRERES SOC. ANON. Jan. 27, 1955 [Feb. 6, 1954], No. 2452/55. Class 142 (2). Weft selecting mechanism for a gripper shuttle loom comprises an arcuate feeder changer 46, mounted on a shaft 41 and carrying longitudinally-slidable weft feeders 47, each having a gripper for holding the end of a weft thread 48. When the shuttle lifter 40 has turned about the shaft 41 to raise a shuttle 25 to the position shown, an opener 43 penetrates the shuttle to open its gripper jaws 44, and the feeder changer 46 turns about the shaft to bring the required feeder into register with the shuttle, the jaws of any intervening unselected feeders passing through the open jaws of the shuttle during this movement. The opener 43 is then withdrawn to allow the shuttle jaws 44 to close on to the selected weft, whereupon the jaws 49 of the feeder are spread apart by an opener 65. After the shuttle is picked, a slider 53 engaging a notch 59 in the active feeder moves the feeder towards the fabric, its gripping end becoming located in guides 61, 62 as shown at 47d, whilst its shank end remains engaged in the feeder changer 46 ; the other feeders are held against accidental endwise movement by notches 68 embracing a flange 67 which is interrupted at 69. When the weft is fully inserted and positioned in the shed, the jaws 49 are spread apart momentarily by an opener 66, the weft comes between them, and they close to grip it. After the weft has been cut close to the jaws, the slider 53 returns the feeder to its normal position, the weft 48 being drawn back by a tensioning device (not shown). Modifications for two and four kinds of weft are described, in which the guides 61, 62 are continued as far as the feeder changer,. except that the lower guide 62 is interrupted to permit the shuttle lifter to work; the openers 65, 66 are operated by opposite ends of a centrally-pivoted lever. Specification 733,744 is referred to.
Patent GB-1218072-A (GB)
Title: Improvements in or relating to free piston gasifiers
Inventor: CAMPBELL JAMES STOUFFER
IPC: F02B75/02
Filed: 1968-01-17
Abstract: 1,218,072. Free piston gas generators. BRAUN-CAMPBELL ENG. Ltd. Jan. 17, 1968, No. 2465/68. Heading F1Q. A free piston gas generator comprises a cylinder member 2, and a pair of opposed piston members 5 reciprocably mounted in the cylinder member at least one of the members having formed therein a sealed vacuum pocket for thermally insulating the combustion chamber. As shown the cylinder member 2 and the piston members 5 have formed therein sealed vaccum cavities or pockets 8c and 8p. Further insulation of the combustion chamber 4 can be obtained by polishing or otherwise plating or treating the surfaces of parts about the combustion chamber 4. The inside surface 6a in the pocket 8p. and the surface 17a of the cylindrical member 17 may be dull and dark to form a heat absorptive surface. Each piston member may have a plurality of closely spaced circumferential labyrinth forming grooves 45 adjacent the crown thereof.