baber/WOPTO huggingface dataset:
Patent GB-373662-A (GB)
Title: Improvements in or relating to the flotation concentration of minerals
IPC: B03D1/012
Filed: 1931-03-02
Abstract: Cuprous thiofuroate is precipitated when a solution of thiofuroic acid is treated with copper sulphate for the production of thiofuroyl disulphide.  Specification 294,921, [Class 82 (ii), Washing granular &c.], is referred to.ALSO:Thiobenzoic and thiofuroic acids are prepared by heating benzoic and furoic (pyromucic) acids respectively with phosphorus pentasulphide and condensing and solidifying the distillate.  The thiofuroyl disulphide is prepared by treating a solution of the thiofuroic acid with potassium ferricyanide or copper sulphate. Thiopropionic acid is prepared by heating propionic acid with an equal weight of phosphorus pentasulphide and half its weight of coarse sand, the distillate obtained being subjected to redistillation.  The corresponding disulphide is prepared by treating the redistilled acid with potassium ferricyanide. Specification 294,921, [Class 82 (ii), Washing granular &c.], is referred to.ALSO:In the flotation concentration of ores the pulp is agitated with an agent comprising an organic compound of the structure RC : OSM in which R is an organic group and M is hydrogen, a metal, or another RC : OS- group.  The compound may be a mono-thio-organic acid or a derivative thereof, e.g. a salt, or a disulphide of the formula RC : OS - SO : CR, or it may be an alkyl ester of mono-thio-carbonic acid.  Compounds specifically referred to are: thio furoic acid and the corresponding disulphide, thiobenzoic acid, thiopropionic acid and its disulphide, thioacetic acid, thiosalicylic acid, the lead and copper salts of an alkyl mono-thiocarbonic acid, potassium ethyl monothiocarbonate and the corresponding disulphide, and potassium amyl, butyl, benzyl, or cyclohexyl mono-thiocarbonate.  Details are given of the application of the process to the concentration of copper minerals from copper iron ores in acid, alkaline and neutral suspensions with pine oil or cresol as frothing agent and with one of the above specified modifying agents, and of the concentration of lead and zinc ores.  Thiobenzoic and thiofuroic acids are prepared by heating benzoic and furoic acids respectively with phosphorus pentasulphide and condensing and solidifying the distillate. Thiopropionic acid is prepared by heating propionic acid with an equal weight of phosphorus pentasulphide and half its weight of coarse sand.  The distillate obtained is redistilled and either the redistillation product or the residue may be used in the concentration process.  The corresponding disulphide is prepared by treating the redistillation product with potassium ferricyanide. Thiofuroyl disulphide is made by treating a solution of thiofuroic acid with potassium ferricyanide or copper sulphate, cuprous thiofuroate being precipitated in the latter reaction.  Specification 294,921, [Class 82 (ii), Washing granular &c.], is referred to.
Patent GB-1483884-A (GB)
Title: Tape cartridge release assembly
IPC: G11B15/675
Filed: 1976-02-18
Abstract: 1483884 Cartridge release assembly MOTOROLA Inc 18 Feb 1976 [14 March 1975] 06447/76 Heading G5R A tape recorder (10, Fig. 1, not shown) comprises a capstan (12) and a cartridge release assembly wherein the means for moving the cartridge (11) away from the capstan is controlled by a circuit, Fig. 2, having a transistor 44, the input 42 and common 43 terminals of which are connected to the supply voltage B+ via switches 40, 41 which are actuated by the insertion of the cartridge, and a third switch 38 connected in series with either 40 or 41, such that the transistor is only rendered non-conducting when all three switches are closed; resulting in the de-energizing of a solenoid 27 which controls the ejection of the cartridge. The switch 38 may be the ignition switch of a motor vehicle and a further switch 37 may be provided for manual release of the cartridge. When any switch is open, e.g. if the ignition is not switched on, the transistor conducts and energizes the solenoid resulting in the ejection of the cartridge.
Patent GB-491524-A (GB)
Title: Improvements relating to fluid pressure braking apparatus
IPC: B60T15/30
Filed: 1937-03-04
Abstract: 491,524. Fluid - pressure brakes. TOMLINSON, A. V. (Westinghouse Brake Co. of Anstralasia, Ltd.) March 4, 1937, No. 6460. [Class 103 (i)] Fluid-pressure brakes for trains comprise an accelerating bulb having two chambers adapted to be connected in parallel to the train pipe by the triple valve, the release from one chamber being slower than from the other, that is, the release passage from one chamber has a restricted part. The supply to the chambers may be free or restricted by suitable arrangements of restrictions and check valves. In the Figure the supply to the chamber 2 is free through a check valve 7 and to the chamber 1 is restricted through a restriction 9, the release from both chambers being restricted by restrictions 9, 5. In another modification the two chambers are exhausted by different recesses in the triple valve slide valve and the unrestricted exhaust through which the brake cylinders also exhaust is provided with a retaining valve.
Patent GB-416030-A (GB)
Title: Improved process of and means for feeding gas turbines
IPC: F23R3/04
Filed: 1933-03-03
Abstract: 416,030. Gas turbines. COUZINET, R. A. A., 189, Boulevard Bineau, Neuilly-sur- Seine, France. March 3, 1933, No. 6526. Convention date, March 4, 1932. [Class 110 (iii).] In a gas turbine, the combustion chamber 1 is supplied with compressed air by a pipe 7<a> and with fuel by a pipe 6<a>. The products pass through a nozzle 1<a> and a neck 2<a> to a chamber 2 where they expand adiabatically and are mixed with compressed air from a chamber 4 before passing through a nozzle 2<b> to the turbine 5. In a modification, the fuel is injected through side tubes either continuously or periodically, air and fuel pumps are provided.
Patent GB-846993-A (GB)
Title: An improved machine for toroidally winding the cores of electric and magnetic components
Inventor: GRIMBLEY JOHN
IPC: H01F41/08
Filed: 1958-02-28
Abstract: 846,993. Winding toroidal coils. PARMEKO Ltd. March 2, 1959 [Feb. 28, 1958], No. 6541/58. Class 83 (4). In or for a machine for toroidally winding cylindrical cores of electric and magnetic components, a flexible shuttle comprises a longitudinal series of connected but relatively articulated tubular elements which constitute short shuttle sections and are adapted to house an elongated coil of helically wound thin corewinding wire, the leading shuttle section of the said series having a nozzle through which wire can be continuously drawn during a winding operation, from the back or tail end of the contained elongated coil, and the opposite ends of the series being connectable as to provide an endless chain of tubular shuttle sections. A flexible shuttle to carry wire through a cylindrical core 26 to be wound with the wire comprises a series of tubular shuttle sections 1 riveted to a flexible spring steel band 2 that has pivoted at 10 to one end a band section 7 carrying a tubular shuttle la formed with a nozzle 9 to guide the wire from the sections 1, over V-grooved straightening and tensioning rollers 8, carried by the section 7, and through a slot 13 in said section to the core 26. The section 7 is pivoted out of the way when loading the shuttle. The section 7 is connected by pin- and slot means 14, 15 to the other end of the band 2 to form an endless chain. In an alternative construction, Fig. 8, shuttle sections 1 are connected together by pairs of links 17 and a length of chain 18, formed by flat plates 19 linked together, carries the rollers 8. A hook 22 and pin 23 secure the ends of the shuttle. The shuttle is carried, so as to pass through the core 26, by and around co-planar wheels 24, 25 each formed in two halves to allow passage of wire therethrough. The wheel 25 is carried by pivoted arms 44, adjustable to tension the shuttle, and the halves thereof are driven by pulleys 50, 51 driven by belts 52, 53 from pulleys on a shaft 45 driven by an electric motor. Wire from the nozzle 9 and rollers 8 passes between opposed friction discs 59, 60 on the wheel halves and between adjustable spring-pressed pairs of tension control bars 31, 31, 33, 34 to the core 26 which is rotated or oscillated by means 28. The turns wound may be counted by an electronic counter 79 or by a cam element mounted on the shuttle.
Patent GB-115829-A (GB)
Title: Improvements in or relating to Pistons and Piston-rings.
Inventor: FORGUES FRANCOIS
IPC: F16J9/20
Filed: 1918-04-17
Abstract: 115,829. Forgues, F., and Forgues, H. July 23, 1914, [Convention date]. Pistons; piston packing.-In a piston for an internal-combustion engine, the packing-rings and the annuli separating them are bevelled at 1, 2 respectively to prevent the passage of lubricant to the combustion chamber. The edges 1 are cut at an angle of sixteen degrees, and the edges 2 at an angle of eight degrees.
Patent GB-589111-A (GB)
Title: Improvements connected with applicators for the insertion of tampons
IPC: A61F13/26
Filed: 1945-03-15
Abstract: 589,111. Tampon introducers. CARUS & SONS, Ltd., A., and CARUS, E. L. March 15, 1945, No. 6550. [Class 81 (ii)] An introducer for tampons comprises a tube A through holes E<1> in which a tape or cord B quite sep arate from the tampon C is threadec over the front edge, and under the tampon, so that on pulling the end: of the tape the tampon is ejected In a modification the holes E' are disposed near the front edge of the tube, and in a third construction, the tape, passing into the tube through holes disposed near the front edge emerges through holes near the rear edge.
Patent GB-280088-A (GB)
Title: A new process for obtaining indelible writings and prints
IPC: D21H21/46
Filed: 1927-03-09
Abstract: 280,088. Inzeo, U. A. d'. March 9, 1927. Ink.-For producing indelible writing or printing upon a paper or other medium sensitized in known manner by treating with an aqueous or alcoholic solution of gallic or tannic acids, the ink or reactive liquid consists of a solution of ferrous nitrate or of a chromate such as potassium chromate in water or other suitable medium.
Patent GB-622333-A (GB)
Title: Improvements in and relating to optical projection devices
IPC: G03B21/16
Filed: 1947-03-10
Abstract: 622,333. Kinematography. GENERAL ELECTRIC CO., Ltd., HAWKINS, F. S., and THOMAS, E. R. March 10, 1947, No. 6644. [Classes 97 (i) and 98 (ii)] In apparatus for optically projecting a background scene for composite kinematography, the picture of the background is formed on a fluid-cooled surface of metal or other good. thermal conductor and projected episcopically. The picture may be formed photographically, by painting or etching, or may be in the form of a stencil. In the form shown, the carbon arc 6, 7, with mirror 8, illuminates the picture 1 on a metal base 2 cooled by air blast from the nozzle 4. The reflected light is received by the mirror 9 and an image is formed by the lens 10 on the screen 11. In this arrangement the projected picture is not accurately in focus all over. To avoid this difficulty the picture may be placed parallel to the screen to reflect directly through the lens. To allow illumination of the picture the projected beam is inclined to the lens axis. The picture may form one wall of a water-cooled chamber.
Patent GB-108659-A (GB)
Title: Improvements in Universal Joints.
Filed: 1917-05-10
Abstract: 108,659. Hardy, E. J., and Hardy & Co., E. J. May 10, 1917. Universal joints.-In universal joints adapted for use on motor-vehicles &c. for driving in one direction only, in which studs arranged alternately on the driving and driven shaft engage a central disk of textile fabric, the layers are secured together by vulcanization &c. and consist each of a number of similarly shaped segments C with their threads parallel to the line joining the driving and driven stud-holes A, B, the joints of the segments in adjacent layers being staggered.
Patent GB-143578-A (GB)
Title: Improvements in gun mountings for use on air-craft
IPC: F41A27/30
Filed: 1916-05-10
Abstract: 143,578. Allen, R. May 10, 1916. Mountings for use on aircraft. -Relates to telescopic pillars permitting the gun to be trained as well as raised or lowered, and consists mainly in the provision of means which serve both to clamp and to handle the part of the pillar that can be trained and raised or lowered. As shown in Figs. 3, 4 and 5, the adjustable part, a tube a, fits inside the fixed part a' of the pillar, and is split at its lower end so that it can be expanded and clamped by wedges b<1>, b<1> under the influence of a coiled spring b<3> between the wedges and a rubber spring g acting on a cam-lever e co-operating with the wedges through rods c, c. The lever e and a handle f on the tube a are grasped by the hand to unclamp and handle the pillar. The weight of the gun is balanced by a rubber spring j. This spring passes over a pulley k at the top of a central rod k' and is attached at one end to a loose follower ring n supporting the adjustable part a of the pillar, and at the other end to a ring l which, together with the rod k<1>, can rotate but cannot move up or down. The gun pivot fits into a socket i<2> at the end of an arm i projecting from the upper end of the part a of the pillar, and is retained in the socket by a pair of notched bolts o<1> connected together by a yoke o<3> which can be pressed in by hand against a spring o<4> to release the gun pivot. In a modification, Figs. 14 and 15, the arm i is connected to the part a of the pillar through an horizontal hinge joint comprising a T-shaped hollow head t' bolted to the part a of the pillar and split sleeves t, t on the arm i. These sleeves are expanded by wedges t<4>, t<4> and spring t<6> to clamp the joint, and can be unclamped by means of Bowden wires t<7> and a treadle (not shown). Other modifications of detail are described.
Patent GB-589115-A (GB)
Title: Work-piece fixing device
IPC: B25B5/04
Filed: 1945-03-16
Abstract: 589,115. Clamps &c. BURRI, E. March 16, 1945, No. 6699. Convention date, Feb. 25, 1944. [Class 61 (ii)] A spring clamping device with the jaws 5, 10 disposed at an angle to the vertical has the jaw members 3, 8 pivoted together at 9, the former provided with a downwardly extending part 31 adjustably clamped to a base plate 1 and the jaw member 8 provided with a handle 11 for opening the jaws against the action of the clamping spring 12 which acts through a pressure key 13. The modification shown in Fig. 4 is treadle-operated and mounted on a ball 20 for universal angular adjustment and the pressure spring is duplicated admitting of light or heavy spring pressure ; the inner spring 18 is always in action on the pivoted jaw arm 17, through a key 21, and the outer spring 23 also exerts pressure on the key through a flange 24, on a sleeve 25, except when the sleeve is turned to bring a pair of notches on the flange opposite the ends of the key. In a further modification the pressure of the pivoted jaw lever is released by a cam lever.
Patent GB-111971-A (GB)
Title: Improvements relating to Dry Gas Meters.
Inventor: FOSTER JOHN
IPC: G01F3/22
Filed: 1917-05-11
Abstract: 111,971. Foster, J. May 11, 1917. Gas meters.-In a dry gas meter, the measuring-chambers a and the valve mechanism dare constructed independently of the case e. The space between the case and the other part, which the gas traverses on its way to the valve and measuring-chambers, forms a condenser and a receptacle for condensates, being fitted with baffles f, thus minimizing the deteriorating effect on the diaphragms. The condensate may be emptied through a cock, &c., or by detaching the case e from the connecting pipes it may be poured out through the pipe h.
Patent GB-106136-A (GB)
Title: Improvements in Elevated Rope Railways.
Inventor: HINSEN WILLIAM
IPC: B61B12/06
Filed: 1916-05-10
Abstract: 106,136. Hinsen, W. May 10, 1916. Hope railways.-The running rope or track of an elevated rope railway, in which the vehicles are driven by any means of propulsion and having the rope carried by hangers suspended from girders attached to towers, has the cable 14 secured at intervals to grooved brackets 13 provided with integral balls 11 which rest in divided sockets 12 mounted in longitudinal grooves on the horizontal portions of the hangers 10. The sockets 12 are provided with upstanding shoulders to engage with the brackets 13 so as to limit the motion.
Patent GB-960936-A (GB)
Title: Improvements in and relating to the treatment of phenolic effluents
Inventor: BLACKBURN WILLIAM HENRY
IPC: C02F3/00
Filed: 1962-02-21
Abstract: Ammonium salts are obtained by the partial or complete evaporation of a liquor from a coal processing plant, the liquor having been acidified and then subjected to solvent extraction with an aliphatic, monohydric alcohol containing from four to six carbon atoms per molecule, or a mixture of such alcohols. Acids mentioned are hydrochloric, sulphuric and phosphoric, and alcohols mentioned are n-butanol, n-pentanol and n-hexanol. Srecification 804,544 is referred to.ALSO:A process for the dephenolation of an aqueous phenolic effluent liquor from coal processing plant comprises acidifying the liquor, e.g. by adding hydrochloric, sulphuric or phosphoric acid, and subjecting the acidified liquor to solvent extraction with an aliphatic, monohydric alcohol containing 4 to 6 carbon atoms per molecule, or a mixture of such alcohols. Alcohols mentioned are n-butanol, n-pentanol and n-hexanol.  The amount of acid added should be at least sufficient to neutralize free ammonia present. After the solvent extraction step, which may be carried out in a counter-current extraction unit, the liquor may be heated to remove residual solvent and then either partly or completely evaporated to obtain the ammonium salt present, or the liquor may be subjected to biochemical oxidation followed by boiling with lime as described in Specification 804,544.  Three specific examples are described in which n-butanol is employed in amounts of 60% to 70% by volume of the volume of the liquor.
Patent GB-1291052-A (GB)
Title: Penicillin derivatives and their preparation
Inventor: BOGASH RICHARD
IPC: C07D499/00
Filed: 1968-09-17
Abstract: 1291052 6-APA AMERICAN HOME PRODUCTS CORP 16 Sept 1969 [17 Sept 1968 7 Feb 1969] 44184/68 and 6759/69 Addition to 1291053 Heading C2A 6-Aminopenicillanic acid is prepared by a process in which a 2-amido-6-aminopenicillanic acid of general formula wherein X and Y, when taken separately, are both electron-withdrawing groups or, when taken together with the nitrogen atom to which they are attached, X and Y complete a cyclic electron-withdrawing group, is hydrolysed with water in the presence of a hydrolytic catalyst until hydrolysis is complete.
Patent GB-144806-A (GB)
Title: A process for the preparation of arsine derivatives
IPC: C07F9/70
Filed: 1919-03-18
Abstract: Amides and acids of the general formul  R2AsCONH2 and R2AsCOOH, when R= a fatty or aromatic radical, are prepared by hydrolysis of the corresponding nitriles R2AsCN.  According to examples:-dimethylarsinoformic acid and diphenylarsinoformic acid are obtained by treating cacodyl nitrile and diphenylarsine nitrile with dilute sulphuric acid; diphenylarsine nitrile is converted into the corresponding amide by hydrogen peroxide, and the amide converted into diphenylarsinoformic acid by sodium nitrite and sulphuric acid. Dimethylarsinoformic acid forms salts with sodium, calcium, magnesium, manganese, iron, cerium, mercury, quinine, strychnine, &c.
Patent GB-272585-A (GB)
Title: Improvements relating to the reduction of pigment colours and lakes to a finely divided state
IPC: C09B67/08
Filed: 1926-03-11
Abstract: 272,585. Leitch & Co., Ltd., J. W., and Everest, A. E. March 11, 1926. Pigments.-Pigment colours are obtained in a finely-divided state by mixing them with soap solution, adding a salt of an alkali earth or other metal to precipitate an insoluble soap, and reducing the product to a state of extreme fineness by such means as a colloid mill and finally filtering and drying it. In an example, a paste of the pigment colour obtained by coupling diazotized m-nitro-p-toluidine with B-naphthol is' mixed with stearine soap and calcium chloride solutions and the mixture is passed through a colloid mill, filtered and dried.
Patent GB-776866-A (GB)
Title: Energizing arrangements for electromagnetic clutches
Inventor: SUSSEBACH WALTER
IPC: H02K49/04
Filed: 1954-03-11
Abstract: 776,866. Magnetic clutches. ELEKTROMECHANIK GES. March 11, 1954, No. 7116/54. Class 35. A controllable magnetic clutch used in connection with loads having high starting torque is so arranged as to have an initial maximum torque which decreases gradually to a predetermined final value either as the speed of the output shaft increases or after a certain time interval. Fig. 1 shows a clutch 12 driving a rock crusher 10 and a D.C. generator, the P.D. of which is in opposition to the voltage applied to the clutch energizing winding. The generator P.D. is varied by a voltage divider in its armature circuit or by varying its excitation. Alternatively, a motor is connected in parallel or in series with the clutch excitation winding. In a further arrangement, a condenser in parallel with a resistance is connected in series with the clutch winding. In a still further embodiment, the clutch winding is supplied with current from the anode of a grid-controlled valve which may also have time-delay elements. A resistance having a high positive temperature-coefficient may be inserted in the circuit of the clutch winding.
Patent GB-514471-A (GB)
Title: Improvements in the extraction of beryllium compounds from beryllium ores
IPC: C22B35/00
Filed: 1938-03-07
Abstract: 514,471. extracting beryllium ores ; double fluorides. SERI HOLDING SOC. ANON. March 7, 1938, No. 7144. Convention date, March 20, 1937. [Class 1 (iii)] In a process wherein beryllium compounds are extracted by heating oxidic beryllium ores, e.g., beryl, with reactants containing or yielding the -HF group, water is added to the powdered mixture of ore and reactant to form a pasty mass, which is then compressed into briquettes, which are heated and then treated for the extraction of the beryllium compound formed. About 8 per cent. of water on the weight of the mass is used in forming the paste. Specified substances yielding or containing the -HF group are alkali and alkaline earth bifluorides. The invention is described with particular reference to sodium bifluoride. The briquettes are introduced into a previously heated furnace, heated at 550-800‹C., preferably at about 650‹C. for two hours, broken up in the presence of an equal weight of water, and then lixiviated at 90-100‹C. The filtered solution of sodium beryllium fluoride is heated, and beryllium hydroxide is precipitated by caustic soda and then calcined to beryllium oxide.