baber/WOPTO huggingface dataset:
Patent GB-787306-A (GB)
Title: Removal of chlorine from chlorine-water solutions
IPC: C01B7/01
Filed: 1956-02-09
Abstract: Residual chlorine is removed from chlorinewater by passing the latter through a chlorine desorption system, adding an oxidizable sulphur compound thereto and separating the gaseous chlorine and dechlorinated water so produced.  Chlorine gases, e.g. from the electrolysis of brine, pass at 8, Fig. 1, through the direct-contact cooling section 7 of a tower to a drying, compressing and liquefying stage 1 whence emerge liquid chlorine and liquefier-vent gases containing chlorine and carbon dioxide. These gases are absorbed in a tower 3 to which water is introduced under pressure at 5. Chlorine-free gases are vented to the atmosphere at 4 while effluent chlorine-water to be treated emerges at 6 and passes to the cooler 7. Here the pressure of the chlorine-water is partially released so that some gaseous chlorine is liberated and the chlorine-water cools the gases entering at 8.  The chlorine-water passes down into the desorption section 10 where it is maintained at a temperature of 90 DEG C. by steam introduced at 11.  The <PICT:0787306/III/1> amount of residual chlorine is lowered by introduction of an oxidizable sulphur compound at 12, the chlorine gas thereby liberated passing up the tower and leaving with the mixed gases. The stripped warm water leaving the tower at 13 may be used in a hot-water process or discarded.  In Fig. 2 (not shown) chlorine-water containing the sulphur compound is admitted to the top of a tower while steam is passed in at the bottom.  Chlorine gas and water pass from the top and bottom respectively.  Examples of sulphur compounds are the alkali-metal sulphides, polysulphides (especially sodium tetrasulphide), sulphites, hyposulphides, thiosulphates and pyrosulphites.
Patent GB-790553-A (GB)
Title: Improvements in or relating to a machine for cutting curved teeth for conical gear blanks
Inventor: SHINJO KINICHI
IPC: B23F9/10
Filed: 1955-02-10
Abstract: 790,553. Gear - cutting. FUJI JIDOSHA KABUSHIKI KAISHA. Feb. 10, 1955, No. 4049/55. Class 83 (3). A gear-cutting machine comprises a face-mill type annular cutter 6 having inside and outside straight cutting-edges mounted for angular adjustment on a continuouslyrotated cradle 4, a work-spindle adjustable on a column 20 fitted to a table 21 which is adjustable angularly on a sliding base 22, and one group of compound change-gears 8 through which the rotor and spindle are rotated at a desired rolling- ratio. The cutter-spindle 55 is mounted in the cradle by a series of eccentric members 43-41 so that the cutter may represent an internal or external gear.
Patent GB-119808-A (GB)
Title: Improved Cancelling Mechanism of Mine Signalling Systems.
IPC: B66B19/06
Filed: 1918-03-08
Abstract: 119,808. Sterling Telephone & Electric Co., Bell, F. G., and Davey, W. C. March 8, 1918. Addition to 115,280. Mine signalling systems.-Relates to cancelling-mechanism for mine signalling systems of the kind claimed in the parent Specification in which an arm rotated by the winding-engine operates a cancelling- contact, means being provided for preventing repeated engagement between the rotating arm and the contact-operating device, so that a further signal may be received while the engine is running. According to the present invention, the contact-operating device is electromagnetically moved out of the path of the rotating arm on the first closure of the contact. As described in the parent Specification, an arm b carried by a disk a driven by the winding-engine engages a triangular member c pivoted in a plate d, a leaf spring e, bearing against the base of the member c, controlling the cancelling- contact. The plate d is pivoted at f and secured to the armature l of a magnet k. A spring g normally keeps the member c in the path of the arm b, but when the spring e is depressed by the arm b, a circuit is closed for the magnet k which moves the plate d so that the member c is no longer in the path of the arm b.
Patent GB-595060-A (GB)
Title: Improvements in electrical heating elements
IPC: H05B3/44
Filed: 1944-03-06
Abstract: 595,060. Electric resistance heaters. AMERICAN ELECTRO METAL CORPORATION. March 6, 1944, No. 4152. Convention date, March 3, 1942. [Class 39 (iii)] [Also in Group XXXVI] A heating element for operation above about 900‹ C. comprises a coiled electric resistance 38 of a metal such as tungsten, molybdenum, platinum, iridium, osmimn, and their alloys, and a getter material such as zirconium, thorium, phosphorus barimn or sodium arranged in a refractory gas-tight tubular cover 22 with two terminals connected to the coil and to metal tubes insulated from and connected to the cover by gas-tight glass seals. The heaters may be evacuated and are mounted in the wall of a furnace for glass or metals and extend above or below the charge. An externally screw-threaded hollow metal electrode 27 carries a metal tube 26 connected to the cover by glass seal 25 and a metal tube 31 connected through a glass seal 33 to tube 32 carrying an electrode 34. The cover tube 22 is made of oxides of aluminium, magnesium, thorium, beryllium, zirconium or silicates thereof such as sillimanite, by pressing the powdered material into shape with a volatile binder and firing it. The resistance wire 38 is mounted on a tube 36 of similar refractory material, the lower part being of more highly refractory material, e.g. beryllium oxide than the upper cooler part. The windings of the coil 38 may be more widely spaced near the extremities, or more closely spaced at the lower end. The tubes 26, 31, 32 are of nickel cobalt iron alloy and a glass is chosen which expands equally with the metal. The connections between the tubes and electrodes may be sealed by heating with a high-frequency induction coil 85 or by brazing. The getter material, mixed with a volatile solvent may be smeared on the wire 38, the surface of which is roughened. For higher temperatures powdered zirconium or chromium mixed with a powdered refractory insulator such as oxide of aluminium, zirconium or thorium and a volatile binder, is sintered on and between the coils. The assembled element is placed in a vacuum chamber 46, air is withdrawn through a hole in electrode 34 and finally a ring of solder 42 is melted by an induction coil 43 to seal the vacuum, the wire 38 being wound on two spaced rods 36. In Fig. 3, the resistance wire 38 is in two parts connected at 48 in parallel to a lead 37 in a tube 36, and the other ends of the resistances 52, 54 supported on tubes 50, 53 are connected to electrode 27. Further coils, which may comprise wires of different cross-section and have the turns differently spaced, may also be connected in parallel. A single tube with two holes for leads may replace tubes 36, 53. Tube 26 may rest on a shoulder in the furnace wall. Copper discs may be fitted as cooling fins, on the electrode 27, externally of the furnace. The electrical connections may be at opposite ends of the tube 22 extending through opposite walls of the furnace, an asbestos tube insulating the element from the furnace wall.
Patent GB-790989-A (GB)
Title: Improvements in or relating to breech mechanism for guns
Inventor: HESELTINE JOHN CHAPMAN WHALEY
IPC: F41A5/32
Filed: 1948-02-12
Abstract: 790,989. Odnance. VICKERS ARMSTRONG (ENGINEERS), Ltd. Jan. 27, 1949 [Feb. 12, 1948], No. 4157/48. Class 92 The sliding breech-block 1 of a gun is actuated by a hydraulic .ram which moves a rack 21 translationally, the rack being in operative engagement with a pinion, or segment 20 of a pinion, whose rotary movements cause the opening and closing of the' breech. In the gun shown, the segment 20 is fixed to the upper end of a shaft 4 upon which there is an arm 5 which, by the engagement of a slide block 6, which it carries, with a groove 7 in the breechblock, causes the latter to open and close when the shaft is rotated. The rack 21 is formed integral with pistons 24, 25, working in cylinders to which fluid under pressure is supplied; piston 24 has the larger effective diameter of the two pistons. The fluid supply is regulated by a valve control device 26, having a valve whose stem 30 projects both upwards and downwards as shown in Fig. 1. A hand lever 32 associated with the lower end of the stem 30 can be moved to raise the valve to the "power on" position and to lower the valve to the "power off" position.-With lever 32 in the "power 'off" position the breech can be opened and closed by a hand lever fitted on to the shaft 4, and in the "power on" position opening and closing is effected by power under the control of a lever 40. Action. Assuming the breech to be closed and the valve stem 30 to occupy the lower of its two "power on" positions, pressure fluid is supplied to both ends of rack bar 21, and as piston 24 is the larger of the two, the shaft 4 will be rotated to hold the breech closed. If now the lever 40 is,moved by hand, or by a cam 45 if semi-automatic action is desired. it lifts the valve stem via lever 60, rod 61 and a plate 36 pivoted to rod 61 and engaging a slot in the valve stem. The valve is thus raised to admit fluid pressure to the cylinder of piston 25 only, thus to open the breech, and it is held in this position by a catch 37. The breech-block, in opening, moves an arm 39 serving to withdraw the catch 37, and as plate 36 has been moved by a cam surface clear of the stem 30, the stem is free to move to its initial position to close the breech. Pivoted devices 9, Fig. 3, prevent complete closure of the breech until a new. round is mounted. Fig. 3 also shows means operated by the slide 6 on the arm 5 for withdrawing the firing needle 13, whereby an electrical contact 14 can be brought into and out of register with a contact in the firing circuit. Fig. 1 shows arms 16, 17. associated with buffers for the breech-block.
Patent GB-1477829-A (GB)
Title: Methods of applying lids to containers
IPC: B67B3/02
Filed: 1973-08-21
Abstract: 1477829 Closuring containers PLASTONA (JOHN WADDINGTON) Ltd 23 July 1974 [21 Aug 1973] 00423/76 Divided out of 1477828 Headings B8T B8C and B8D A method of applying a plastics lid 50 having a depending peripheral flange 54 to a thermoplastics container 48 having an outwardly extending flange 52 around its opening comprises placing the lid to close the container with its flange surrounding the container flange, tucking the lid flange round and under the container flange by the application of heat to the lid flange through the heated forming ring 56 and axially pressing the lid flange by lowering the die 60 so that the lid flange is pressed into the rounded bottom of a shoulder 58 of the ring 56. The method may be applied to the lids of Figs. 1 to 4 (not shown) which are embodiments of the invention of Specification 1,477,828.
Patent GB-976482-A (GB)
Title: Improvements in or relating to shelf frames
IPC: A47B57/40
Filed: 1961-02-03
Abstract: 976,482. Shelving. A. INGVARTSEN. Feb. 3, 1961 [Feb. 5, 1960], No. 4240/61. Heading A4B. A pillar 10 is provided to support the outer edges of shelves 4 or bearers 5 and to rest on foot 6. Hooks 3 and 12 engage in slots 2 and 11, respectively. The pillar 10 is located by the up-turned rim 9 of plate 8 and may be of channel or rectangular section. When of rectangular section, reinforcing channel section member 14 is omitted.
Patent GB-272976-A (GB)
Title: Process for the treatment of clays and the like and for the production of new and useful compositions of matter
IPC: C01B33/40
Filed: 1926-02-17
Abstract: 272,976. Cloke, J. G. Feb. 17, 1926. Mica. - Argillaceous materials such as claysare treated, preferably by boiling, with a reagent such as a strong mineral acid adapted to dissolve out the coloured ingredients but in insufficient quantity to cause the formation of aluminium salts to any appreciable extent, fluorine or a fluorine compound such as hydrofluoric acid being then added. Sulphuric acid is a suitable agent, 1 lb. of acid being employed with 7 lbs. of yellow china clay and 21 lbs. of water. The mixture is boiled until the coloured matter is dissolved and the liquid has been concentrated to about half its volume, when 1 to 2 lbs. of calcium fluoride is added, the boiling being continued until the mass begins to thicken. The product contains bleached clay and a new substance resembling mica. The quantity of the mica-like substance produced can be controlled by varying the quantity of hydrofluoric acid employed, 1 gram of fluorine yielding 10 grams of the mica-like substance, but the quantity of the fluorine compound must not be such as to dissolve the silicate. The reaction mixture is treated bv decantation to separate the bleached clay from the mica-like substance.
Patent GB-706852-A (GB)
Title: Improvements in or relating to protective gloves, mitts and the like
Inventor: WHITE GEOFFREY KENT
IPC: A41D19/00
Filed: 1951-02-26
Abstract: 706,852. Gloves. NORTH & SONS. Ltd., J. Feb. 26, 1952 [Feb. 26, 19511, No. 4571/51. Class 141 A method of making a protective glove, mitt &c. of the kind comprising a flexible fabric body having an outer layer of a flexible non-pervious protective material, other than rubber, as for instance polyvinyl chloride, consists in placing a fabric glove, upon a former, dipping it into the protective material and subsequently curing with the fingers and thumb pointing either upwards or downwards, the fabric glove being so constructed as not to have a longitudinal' seam extending along the inside wall of the thumb or into the region of the crutch. The Figure shows the seam 1 of the thumb 2 in a preferred position, on the outside or back of the thumb, but the seam 1 may terminate at any point on the back of the thumb between the points 6 and 7. Specification 624,795 is referred to.
Patent GB-881916-A (GB)
Title: Conduit and strainer assemblies
Filed: 1960-02-09
Abstract: 881,916. Filters. FOOD MACHINERY & CHEMICAL CORPORATION. Feb. 9, 1960 [Feb. 9, 1959; Feb. 11, 1959], No. 4604/60. Class 46. A strainer 8 secured within and in combination with a conduit 2 with an outlet opening 6 at one end thereof, the opening 6 being defined by an outwardly extending flange 4 the upper part 5 of which has two sets of rods preferably embedded in its surface, the first group 10 forming a cylindrical barrier to hold solids above a prescribed minimum size and the second group 12 performing the same purpose and which form a core 11 whose apex is formed by the points of contact of the rods 12 which extend down and out to pass between the rods 10, the upper rods of which extend outwards to engage the inner surface of the conduit 2. The strainer is thus defined by the cylindrical formation of rods 10 and the conical formation of rods 12, the lower limit of the container being defined by their intersection. The upper rods 13 of the rods 10 serve to direct the solids into the strainer 8, the liquid component of the mixture flowing between the inner surface of the conduit 2 and the strainer 8 once the solids approach the apex of the core 11. Two modifications are described ; the strainer may be a perforated cylinder spaced from the opening by rods or the two sets of rods may not intersect but have an interengaging, annular inclined plate spaced from the opening in the conduit 2. When the strainer is nearly full the inflowing mixture is halted and the actuating pump in the liquid well below the conduit 2 is reversed expelling the liquid which flushes the strainer clean of solids, the mixture being discharged through a branch line.
Patent GB-556583-A (GB)
Title: Improvements in alarm apparatus operated by air or gas under pressure
IPC: G10K9/04
Filed: 1942-04-08
Abstract: 556,583. Fluid-pressure horns. ABBEY, A. (Kockums Mekaniska Verkstads Aktiebolag). April 8, 1942, No. 4612. [Class 13] Relates to fluid pressure alarms in which a diaphragm 13 or like member controls the passage of fluid from an inlet channel 20 to a sound-producing channel 14 and is actuated on one side by the pressure in both channels and on the other by the pressure in a chamber 12. According to the invention the pressure in the chamber 12 is influenced by the pressure in the channel 14 through a passage having a counterpressure valve. In Fig. 1, the passage is constituted by passages 18 in the wall of the casing, the valve 19 being arranged as shown. In Fig. 2, the diaphragm is loosely mounted so that the passage consists of the clearance between the diaphragm and the wall of the chamber, the valve being constituted by the diaphragm itself. In Figs. 3 to 6 (not shown), the passage consists of an aperture in the diaphragm itself, which aperture may cooperate with a valve seat member, Fig. 3 (not shown), with a flap valve mounted on a leaf spring, Fig. 4 (not shown), with a flat fixed ring, Fig. 5 (not shown), or with a resilient bowlshaped second diaphragm, Fig. 6 (not shown). In Fig. 7 (not shown), the diaphragm is replaced by a tongue fixed at one end only, having an aperture 18 co-operating with a valve as in the other Figures. The chamber 12 has a leakage passage communicating with the atmosphere. Specification 605,774 is referred to.
Patent GB-1016967-A (GB)
Title: A process for the polymerization of olefins
IPC: C08F10/00
Filed: 1964-02-04
Abstract: Olefines are homo- or co-polymerized in a solvent and in the presence of hydrogen using a catalyst comprising (1) at least one organic aluminium compound, (2) at least one compound of a heavy metal selected from the metals of Groups IV to VI of the Mendeleeff Periodic Table, at least one of compounds (1) and (2) being an alkoxy or aryloxy compound, and (3) one of the following:-organic polybasic acid esters, esters of organic acids, with polyalcohols, and polysiloxanes.  Preferred olefines are ethylene, propylene, butene-1 and mixtures thereof.  Catalyst component (1) is selected from aluminium trialkyls and compounds AIR3- nXn where R, which may be the same or different, is hydrogen or a hydrocarbon residue, and X is a hydrogen or halogen atom, alkoxy or aryloxy group, sec.-amide, sec.-amine, mercaptan or thiophenol group or carboxylic acid or sulphonic acid residue and n is 1 or 2.  Catalyst component (2) is a halide, alkoxy or aryloxy compound of metals such as titanium, zirconium, hafnium, vanadium, niobium, tantalum, molybdenum, tungsten, thorium and uranium.  Preferred catalyst components (3) are dibutyl, dioctyl and higher esters of phthalic acid; esters of higher aliphatic acids with glycerine, e.g. animal and vegetable oils and fats; and linear or cyclic siloxane polymers. The amount of hydrogen used is preferably 0.1 to 10% by volume of the olefines used. In the examples:-(1) ethylene is polymerized using monoethoxydiethyl aluminium, titanium tetrachloride and rape seed oil, in kerosene and in the presence of hydrogen.  (2) Ethylene is copolymerized with propylene as in (1) except that rape seed oil is replaced by the dioctyl ester of phthalic acid.  (3) Ethylene is copolymerized with butene-1 using mono-octoxy titanium trichloride, titanium tetrachloride, diethylaluminium monochloride and linear dimethyl - polysiloxane, in kerosene in the presence of hydrogen.
Patent GB-285488-A (GB)
Title: Process for the manufacture of aniline-2:5-disulphonic acid
IPC: C07C309/46
Filed: 1928-02-15
Abstract: 285,488. I. G. Farbenindustrie Akt.- Ges. Feb. 18, 1927, [Convention date]. Aniline-2 :5-disulphonic acid is prepared by sulphonating aniline-3-sulphonic acid with oleum until the monosulphonic acid has disappeared and subjecting the resulting mixture of di- and trio-sulphonic acids to the action of dilute acids. In an example, aniline-3-sulphonic acid is stirred into 100 per cent sulphuric acid, oleum is added and the mixture heated. The sulphonation mixture is then diluted with water and boiled under reflux, or the mixture may be freed from sulphuric acid and boiled with hydrochloric acid, giving a solution containing only the disulphonic acid.
Patent GB-872085-A (GB)
Title: Improvements in or relating to wet separation apparatus
IPC: B03C1/00
Filed: 1958-02-13
Abstract: 872,085. Washing granular materials. HARVENGT, E. Feb. 13, 1958 [Apirl 4, 1957], No. 4806/58. Class 82(2) A wet separating apparatus comprises a vessel having a discharge orifice and means for establishing within the orifice a magnetic field of sufficient strength to control, with the aid of magnetic particles added to the orifice, the discharge therefrom. As shown the outlet 5 from a vessel may he surrounded by the poles of an electromagnet, the current to which is controlled by a rheostat 33. Magnetic particles added to the orifice form a barrier therein which is sufficient to prevent discharge from the orifice until the load of material on the barrier becomes sufficient to break the barrier down; the material is then discharged and a new barrier is formed. The intensity of the field of the magnet may be varied according to the optical properties of the discharge or the weight of the discharge at any moment and means may be provided to shut the orifice by mechanical means in the event of a failure of the electromagnet.
Patent GB-114346-A (GB)
Title: Improvements in or relating to Tin Openers.
Inventor: KENNEDY ALEXANDER
IPC: B67B7/46
Filed: 1917-04-04
Abstract: 114,346. Kennedy, A. April 4, 1917. Vices.-A vice for gripping tins to facilitate opening them comprises V-shaped jaws E, E<1> pressed together by a spring F. The jaw E' can he moved away from the jaw E by a pedaloperated chain G running over a pulley G'.
Patent GB-339550-A (GB)
Title: Process for bleaching bast fibres especially flax, hemp and the like
IPC: D06L4/70
Filed: 1930-02-15
Abstract: 339,550. I. G. Farbenindustrie Akt.- Ges. March 16, 1929. [Convention date]. Bleaching, processes and materials for.-Bast fibres, either in the form of crude fibre, spun yarn, or finished goods, are bleached by employing peroxide and hypochlorite baths in the following serial order :-1, peroxide; 2, chlorine (acid); 3, intermediate washing by infusion with sodium carbonate solution; 4, chlorine (alkaline or neutral); 5, peroxide. The first chlorine bath may consist of a bath containing free hypochlorous acid, preferably corresponding to PH < 5 , the second chlorine bath being of lower concentration in active chlorine and higher PH value. The first peroxide bath may consist of the spent peroxide of a previous fifth stage to which sodium carbonate has been added. As a modification in the case of fibres difficult to bleach, the second chlorine treatment is again performed in acid solution, and infusion with sodium carbonate is repeated before proceeding to the chlorine (alkaline or neutral) bath and the second peroxide bath. In an example, bath 1 contains 6 per cent sodium carbonate and a little waterglass, the temperature being maintained at 70 C., and bath 5 also contains a little waterglass, the temperature ranging from 40-80 C., rinsing being performed between the various stages.