baber/WOPTO huggingface dataset:
Patent GB-741499-A (GB)
Title: Improvements in or relating to the purification of anthraquinone solutions
Inventor: LAIT RAYMOND
IPC: C01B15/023
Filed: 1953-05-04
Abstract: Substituted tetrahydro-anthraquinols, e.g. 2 - ethyl - tetrahydro - anthraquinol, are removed from solutions in organic solvents by extraction with aqueous metal hydroxide (e.g. sodium hydroxide) solutions to form a metal salt of the anthraquinol, followed by treatment of this aqueous solution with oxygen or a gas containing it to precipitate the corresponding tetrahydroanthraquinone or anthraquinone.  The tetrahydroanthraquinone may be further oxidized to the anthraquinone with air or oxygen, with or without isolation, or it may be dehydrogenated, with or without a solvent, with a catalyst such as palladium on alumina, magnesia or charcoal.  The process may be a step in the production of hydrogen peroxide (see Group III).  Examples are given of the application of the above process to 2-ethyl-tetrahydroanthraquinol mixed with 2-ethyl-anthraquinone in benzene-methylcyclohexanol acetate solution. Specifications 686,574, [Group III], 718,305 and 718,306, [Group III], are referred to.ALSO:In a process of producing hydrogen peroxide by autoxidation with oxygen of a substituted anthraquinhydrone or anthraquinol in a solvent mixture with subsequent removal of the hydrogen peroxide, followed by the catalytic reduction with hydrogen of the substituted anthraquinone formed to the substituted anthraquinhydrone or substituted anthraquinol, the autoxidized solution, after extraction of the hydrogen peroxide is passed in each cycle or in some of the cycles through an aqueous metal hydroxide (e.g., sodium hydroxide) solution to remove the substituted tetrahydroanthraquinol present, and this solution is oxidized with air or oxygen to form the substituted anthraquinone, or else the tetrahydroanthraquinone, followed by subsequent conversion to the anthraquinone (see Group IV(b)), and the anthraquinone is returned to the process.  Examples describe the application of the process to a solution of 2-ethyl-anthraquinone and tetrahydro-2-ethyl-anthraquinone in a mixture of methyl cyclohexanol acetate and benzene or a mixture of di- and trialkyl benzenes. Specifications 686,574, 718,305 and 718,306 are referred to.
Patent GB-128054-A (GB)
Title: Improvements in Apparatus for Generating and Burning Oil Gas or Vapour.
Inventor: IMRAY OLIVER
IPC: F24C5/18
Filed: 1918-07-30
Abstract: 128,054. Imray, 0., (Gobeille, 0.). July 30, 1918. Vapour burners, solid-flame; adjusting-apparatus; burners, mounting and adjusting; liquidfuel supply.-In a vapour burner of the kind in which filtered hydrocarbon is supplied from a tank to a U-shaped pipe or retort, the pipe is mounted so that its height may be adjusted. In one form, the pipe 9 is carried by a rectangular frame 4 which engages with notched uprights 2; in another form, the supporting frame has telescopic legs. Burner openings 10, which may be screwcontrolled, and choking-blocks 12 are provided in the lower branch of the pipe; baffles 11 slide on the upper branch. In a modification, an additional burner is located between the openings 10, consisting of a #-connexion having a side opening controlled by a nut. The pipes are packed with iron wires admixed with copper wires of larger diameter, and a plurality of pipes may be used. In a modification, the upper and lower branches of the pipe are circular in form. The fuel tank 14 contains a vertical pipe 15 perforated near the back of the tank. Water may be introduced at the upper end of the pipe 15 to mix with the hydrocarbon for cleaning purposes.
Patent GB-717065-A (GB)
Title: Improvements in or relating to torque converters
IPC: F16H41/26
Filed: 1952-05-16
Abstract: 717,065. Torque converters. BORG-WARNER CORPORATION. May 16, 1952 [May 22, 1951], No. 12427/52. Class 69 (2) In a hydrodynamic coupling element comprising  and impeller I with vanes Iv, a turbine T with vanes Tv, and a reaction member S, the reaction member has primary vanes Spv and auxiliary vanes Sav movable relative to, and into engagement with, each other. The primary vanes Spv are supported on a one-way brake OW which prevents rotation of the vanes in one direction but permits it in the other, so that at the speed where the turbine is rotating near the speed of the impeller, the brake OW releases to allow the impeller, turbine, and reaction members to rotate as a unit. The auxiliary vanes Sav are supported on the primary vanes either on the hub 26 or, as shown at 30 in Fig. 1, on the core ring 19. At low turbine speeds fluid flows therefrom in the direction A, Fig. 7, and the auxiliary vanes Sav are moved to engage the right hand face of the primary vanes Spv as shown in the left of the Figure. At moderate turbine speeds fluid flows therefrom in the direction B and at high speeds in the direction C, moving the auxiliary vanes to engage the left-hand face of the primary vanes as shown to the right of Fig. 7.
Patent GB-639054-A (GB)
Title: Improvements in or relating to forging or heading machines
IPC: B21K1/44
Filed: 1947-05-08
Abstract: 639,054. 'Forging bolts etc.; shearing. NATIONAL MACHINERY CO. May 8,1947, No. 12467. Convention date, May 15, 1946. [Class 83 (iv)] A forging or heading machine comprises a die block having a stock feeding aperture, a transfer die and a forming die, shearing mechanism comprising a block with a bore to receive the stock to be sheared and mounted for reciprocation across the die block in timed relation to the reciprocation of a header slide, means for forcing a sheared blank from the shearing block and into the transfer die and transfer means mounted on the shearing mechanism so as to be moved clear of the forming die independently of the motion of the shear block. A driven crankshaft 1 reciprocates the header slide' H, Fig. 2, through a -connecting-rod 2 and also drives shafts 10 and 16 through gearing so that they rotate at half the speed of the shaft 1. Shaft 16 carries cams 17 and 18 (not shown) which actuate knock-out arms K1 and K2 while shaft 10 carries cams 11, 12 and 13 actuating a transfer arm 35 and shearing arm 30 and a cam 25 actuating an arm 23 splined at one end to a shaft 21 passing through the slide H and serving to support and actuate an arm A carrying tools T2 and T5 (not shown), movement of the arm 23 bringing either tool into position opposite the die D3. The arm 35 is pivotally mounted on the shear arm 30 and may be moved independently of the arm by a cam-actuated rod 43. A fixed tool T1 is carried by the slide H. The die block B has dies D1, D2 and D3 and across the face of the block between the dies D1 and D2 moves the shearing arm formed with a shearing opening 49 in the outer end of which a punch P is positioned by means of a pin 52 and slot 51. In operation, and assuming the shearing opening 49 to be in alignment with the die D1, stock M will be fed into the opening 49 by feed rollers R until stopped by the end of the punch P, the head of which will abut a gauge or stop arm 48. Movement of the arm 30 will then shear off a length of stock and carry it to a position opposite die D2 into which it is pushed by the action of the fixed tool T1 on the head of the punch P. This action also squares and sizes the blank. After the withdrawal of the shearing tool, the transfer fingers F, Fig. 6, are moved in front of the die D2 and receive the blank as it is discharged by the operation of the knockout pin K1 into the transfer device comprising an arm 35 with a finger 37 to each side of which is resiliently clamped the transfer fingers F shaped as shown. These fingers carry the blank to a position in front of the die D3 into which it is pushed by the tool T2 which also carries out a forming operation. The arm A then moves the tool T3 into position opposite the die and the header slide again advances to carry out a second forming operation. In a modification, Fig. 14, the transfer fingers are carried by a block 82 mounted to slide within an extension of the shear arm under the action of cam-actuated levers 70, 73 and 78.
Patent GB-920417-A (GB)
Title: Process for the manufacture of aldehydes by the additive combination of carbon monoxide and hydrogen with olefines
IPC: C07C27/22
Filed: 1959-04-13
Abstract: Aldehydes and other oxygen-containing compounds are prepared in continuous manner by reacting olefines in the liquid phase with carbon monoxide and hydrogen at elevated temperature and pressure in the presence of a dissolved cobalt carbonyl compound as catalyst in a reaction tube connected at its upper and lower ends to the upper and lower ends, respectively, of a recycling tube, the liquid ascending in the reaction tube without the assistance of mechanical means, a proportion of reaction product corresponding to the quantity of reacted olefine and also the excess of gas being withdrawn from the upper end of the reaction tube, wherein the liquid is circulated through the reaction and recycle tubes by introducing the gaseous reactants into the lower end of the reaction tube, the gases being introduced in a high ratio such that the temperature is substantially the same throughout the circulating liquid.  Heat exchange may be carried out at any point of the cycle.  Gaseous olefines are added with the CO and H2; liquid olefines are added separately.  The cobalt carbonyl catalyst may be supplied by introducing a melt of a cobalt soap or a highly concentrated solution thereof in an organic solvent. The off-gases may be recycled.  In examples, ethylene reacts to give propionaldehyde with small amounts of propanol and methylpentenal, and diisobutylene reacts to give the corresponding aldehyde together with some acetals; the aldehyde is reduced to isononyl alcohol.
Patent GB-1184046-A (GB)
Title: Photographic Compositions containing Desensitizers
IPC: G03C1/485
Filed: 1967-03-17
Abstract: 1,184,046. Cycloheptimidazoles. SANKYO CO. Ltd., and KONISHIROKU PHOTO INDUSTRY CO. Ltd. 17 March, 1967 [19 March, 1966], No. 12578/67. Heading C2C. [Also in Division G2] Compounds of the formula where R<SP>1</SP> is hydrogen, halogen or a C 1-5  alkyl a cyano or a dialkylamino group, and R<SP>2</SP> is an unsubstituted phenyl or pyridinium group or an alkyl-, halo-, nitro-, alkoxy-, carbamoyl- or alkoxycarbonyl-substituted pyridinium group or a nitro-, halo-, amino-, dialkylamino-, alkyl- or alkoxy-substituted phenyl group, are made by reacting a tropolone of the formula where X is halogen or methoxy with an amidine HN=C(NH 2 )R<SP>2</SP>, where R<SP>2</SP> is optionally substituted phenyl, or by a quaternization process, when R<SP>2</SP> is optionally substituted pyridinium, e.g. by reacting a 2-halo-cycloheptimidazole with a pyridine. A number of substituted and unsubstituted cycloheptimidazoles, which are photographic desensitizers, are described (see Division G2).
Patent GB-1300388-A (GB)
Title: Process for the production of decorative polyester resin castings
Inventor: EVANS PETER GILBERT
IPC: C08L67/06
Filed: 1969-03-11
Abstract: 1300388 Polyester resin castings BECK KOLLER & CO (ENGLAND) Ltd 11 March 1970 [11 March 1969] 12627/69 Headings C3C and C3P Cast objects are made from a polyester resin in which a compound which acts as a blowing agent under the conditions employed in the casting process and which is capable of producing small, conchoidal, internal fractures in the resin after casting, is incorporated in the resin before casting and cross-linking. The polyester resin may be an unsaturated polyester resin derived from the reaction product of an α,#-unsaturated dibasic acid with a dihydric alcohol blended with a vinyl monomer, e.g. styrene. The blowing agent may be α.α<SP>1</SP>-azodiisobutyronitrile, dinitrosopentamethylenetetramine or paratoluenesulphonylhydrazide. The polyester may be derived from maleic and phthalic anhydrides and propylene glycol and may contain an inhibitor, e.g. hydroquinone or para-tert-butyl catechol, and may be compounded before casting with cobalt naphthenate and methyl ethyl ketone peroxide.
Patent GB-942836-A (GB)
Title: Improvements in the manufacture of coated fabrics
IPC: D06M15/256
Filed: 1961-04-07
Abstract: Fabrics coated with tetrafluoroethylene resin are manufactured by supplying a mixture of fine tetrafluoroethylene resin powder and a liquid lubricant in powder or compacted form to the surface of the fabric, and pressing and coating the fabric and resin by passage through two rollers.  The lubricant may be removed from the coating and the coating then sintered at a temperature higher than 327  DEG C., or the removal of lubricant and sintering may be carried out simultaneously.  The fabric may be glass fibre cloth, wire netting, metal and plastics sheet, paper, carbonized fibre cloth, and a natural or synthetic fibre fabric.  Specified lubricants are naphtha, white (hydrocarbon) oil, silicone oil, fluorocarbon oil, alcohols, aromatic hydrocarbons, ketones, esters, or mixtures thereof, or solutions of polymers.
Patent GB-415213-A (GB)
Title: Improved sterile and self-sterilizing cellulosic fibrous products
IPC: A61L15/46
Filed: 1933-05-01
Abstract: Colloidal silver or copper deposited on wadding or fabric which has been in part converted to oxycellulose or hydrocellulose is stated to act in humid condition as a catalyst of hydrogen peroxide or ozone. Colloidal silver may be deposited on the wadding &c. by placing this between silver electrodes in a bath of hot water and passing an electric current.ALSO:Colloidal silver or copper is applied to a cellulosic material, such as wadding or a fabric which has been converted to hydrocellulose or oxycellulose to an extent materially beyond that resulting from ordinary bleaching operations but not sufficient to destroy the fibrous structure.  The colloidal metal may be deposited by placing the fibrous material between horizontal silver electrodes in a bath of hot water and passing an electric current, or previously-prepared colloidal metal may be mechanically spread on the fibrous material.  The products are actively antiseptic and self-sterilizing and may be used as surgical dressings, in some cases combined with adhesive plaster as emergency dressings, as fillings for bottles for sterilizing water, or as preserving and sterilizing agents for organic matter in contact therewith.  The colloidal metal is stated to act in a humid condition as a catalyst of hydrogen peroxide or ozone.
Patent GB-703280-A (GB)
Title: A dobby for the operation of heald shafts
IPC: D03C1/00
Filed: 1951-05-30
Abstract: 703,280. Loom dobby. PROTOTYPA, NARODNI PODNIK. May 30, 1951 [May 30, 1950]. No. 12712/51. Addition to 658,983. Class 142(2) In a shedding motion, as described in the parent Specification, each cam disc is coupled, through the bar. to the main oscillating shaft 1 by a two-armed pivoted , lever 43, one arm 43<SP>1</SP> causing a spring- loaded pawl. 6 to engage the cam 3 and also forming an arcuate guide for the head of the pawl, the other arm 43<SP>11</SP> being swung by a cam which is synchronized with the slay movement, the arm 43" being locked by engagement with a pawl 44 when an electromagnet 10 is not energized. Each heald shaft is connected by links 2, 16 to a roller 4 raised and lowered by rotation of the corresponding cam 3. The engagement of the pawls 6 with the cams 3 is determined by a pattern card which interrupts the current to the electromagnet, and allows a locking bar 44 to drop and engage the end of the arm 43" and causes the tip of the arm 43<SP>1</SP> to engage a pawl 6 with the cam 3. The arm 43<SP>1</SP> of the lever 43 also releases a pawl 12 from a notch in one of the cams 3, the pawl, when engaged, preventing unintentional rotation of the cam 3. When the bar 7 next turns through 180 degrees, the cams engaged by pawls 6 are rotated to form the shed. The next shed is formed when the bar 7 returns to its initial position.
Patent GB-969075-A (GB)
Title: Control valve
IPC: B60T13/40
Filed: 1962-04-04
Abstract: 969,075. Fluid-pressure brakes; valves. WAGNER ELECTRIC CORPORATION. April 4, 1962 [Aug. 10, 1961], No. 12930/62. Headings F2F and F2V. A control valve 27 for controlling the ratio between fluid pressure applied from a source to a fluid pressure responsive motor comprises a housing 50, a pair of independently and correctly movable application members 56, 61 which are correctly movable in response to fluid pressure from the source to establish a fluid pressure at the motor and means for disabling the member 61 whereby the member 56 is independently movable in response to applied fluid pressure to establish a fluid pressure at the motor different to that established when both members are moved. As shown fluid pressure is admitted by a drivers valve 15 to front wheel brake cylinders 23 of a tractor via a quick release valve 21 and to the tractor rear wheel brake cylinders 35 via the ratio changing valve 27. Fluid pressure is also admitted by the valve 15 to port 31 of the tractor protection valve 18 whose port 17 is connected to the reservoir 11. Normally when a trailer is coupled fluid pressure from the reservoir 11 is connected to the port 42 of the valve 18 by a push-pull valve 38 which also supplies fluid pressure to port 45 of the ratio changing valve 27 to move the piston 61 downwardly against the action of a spring 62 so as to abut the plug 53. When fluid pressure is admitted to the port 26 of the valve 27 by the driver's valve 15 to apply the brakes, piston 56 moves downwardly to close the exhaust 55 and then open the spring loaded valve 67 to allow fluid pressure to pass through the outlet ports 33 to the rear wheel brake chambers 35. The fluid pressure in the chamber 52 in this case is substantially equal to the fluid pressure in chamber 51. If however the trailer is uncoupled and the valve 38 closed so as to interrupt communication of fluid pressure to the port 45 pistons 56, 61 will move in concert when fluid pressure is admitted to port 26 to open the valve 67. The effective area of the combined pistons 56, 61 in chamber 52 is larger than the area of the piston 56 in the chamber 51 and produces a lower fluid pressure in the chamber 52 and thus in the rear brake cylinders 35.
Patent GB-577533-A (GB)
Title: Improvements in or relating to the extraction and preparation of agar
IPC: C08B37/00
Filed: 1943-08-10
Abstract: Agar-agar is produced by boiling seaweed in an aqueous alkaline solution, separating the resultant liquor and subjecting this liquor to heat and pressure in an autoclave in the presence of a hydroxide of an alkali metal or of an alkaline earth metal, and finally neutralizing, filtering, concentrating and drying the product.  In an example, seaweed of the Carrageen moss type such as Gigartina stellata, or Chondrus-crispus is washed with high pressure water and then boiled in aqueous suspension for about 1 1/2 hours with an alkaline earth hydroxide solution, preferably a solution containing 3 per cent of calcium hydroxide, based on the dry weight of the seaweed.  The solid matter is removed by filtration through hessian, by a disc strainer, and finally by a filter press and then 15 per cent of potassium hydroxide is added and the liquid autoclaved for 2 hours after a pressure of 40 lbs. has been reached, the contents of the autoclave being kept circulated by a pump.  The liquid is neutralized with hydrochloric acid, 0.2 per cent active charcoal added and the contents of the autoclave recirculated for 1/2 hour, and again filtered.  The liquor is concentrated to 1/4 bulk and then the agar obtained by spray drying on a revolving cone, or by allowing the gel to set, drying in hot air and milling, or by partially freezing the gel, removing the outer layer of ice and then drying the concentrated gel and milling. Specification 161,612, [Class 70], is referred to.
Patent GB-1081305-A (GB)
Title: Treatment of paraffinic fractions
IPC: C07C7/163
Filed: 1965-03-26
Abstract: Paraffin hydrocarbon fractions obtained by a molecular sieve separation are purified to remove phenols, carbonyls, olefins, nitrogen, sulphur, colour bodies and aromatics by hydrogenation at a LHSV of 0.5-5 v./v./hr., 500-1000 p.s.i.g. with 200-2000 SCF/B of hydrogen over a Group VIII metal catalyst at 300-400 DEG  F. or a Group VI metal catalyst which may be mixed with a Group VIII metal at 500-750 DEG  F. Catalysts exemplified are supported nickel and cobalt molybdate.  The feed may be in the C9-C20 range and may be distilled before or after the hydrogen treatment or before the molecular sieve separation.
Patent GB-1337495-A (GB)
Title: Thermoplastic high molecular weight amterials
IPC: C08J7/00
Filed: 1971-04-30
Abstract: 1337495 Modifying thermoplastic polymers NITTO ELECTRIC INDUSTRIAL CO Ltd 30 April 1971 [30 April 1970] 13006/71 Heading C3P Thermoplastic high molecular weight polymers are modified by irradiating with light in the presence of À01 to 40 weight per cent of a volatile, light-activated, chlorine-containing organic compound selected from trichloroethane, hexachloroethane, dichloroethane, carbon tetrachloride, mono-, di- and tri-chlorobenzenes and monochloronitrobenzene. The polymers may be polyethylene, polypropylene, polybutene, ethylene/vinyl acetate copolymer, polyvinyl chloride, polystyrene, polyacrylates, polyvinylidene chloride, polyvinyl alcohol, polycarbonates, polyesters, polyamides, polyethers, natural and synthetic rubbers, silicones, polyvinyl fluoride and polyvinylidene fluoride. Photosensitizers, e.g. 2-methyl anthraquinone, benzophenone, benzaldehyde, anthrone and 1,4-naphthoquinone; and cross-linking agents, e.g. alkylene bisacrylamides, 5 - acrylamino - N - acrylocaproamide and glycol dimethacrylates; may also be present. Examples describe the cross-linking by irradiation with a mercury lamp of (1 and 4) polyethylene with triohloroethane, (2) polyethylene with trichloroethane and benzophenone, (3) polyethylene with 1,2,3-trichlorobenzene, (5) polyethylene with 1,2-dichloroethane, (6) ethylene/vinyl acetate copolymer with trichloroethane, (7) ethylene/vinyl acetate copolymer with tetraethylene glycol dimethacrylate and trichloroethane, and (8) ethylene/propylene rubber with chlorobenzene.
Patent GB-514325-A (GB)
Title: Improvements relating to drinking fountains
IPC: E03B9/20
Filed: 1938-05-03
Abstract: 514,325. Drinking - fountains. PARKER, W. May 3, 1938, No. 13117. [Class 69 (i)] In a drinking-fountain of .the type comprising a nozzle giving a vertical jet, the nozzle 8 is shrouded laterally by a cup shaped surrounding member 11 adapted to confine the path of the jet, if it is diverted from the vertical, to a relatively small angular divergence, and the member 11 has drain holes 16 disposed below the level of the jet so that the latter will not be in contact with the drain water. In the form shown, the cup is secured by the nozzle to the dished top of a fitting 13 connected to the supply and drainage pipes, the drainage openings 17 in the dished top being off-set from the openings 16 in the cup to cause a swirling action of the waste water to clear away dirt. The nozzle is surrounded by an upstanding ring 18 with draining- holes 19, so that a finger cannot be placed in contact with the nozzle. The control valve comprises a rubber-faced closure member 29 held on its seating by a spring and lifted by a piston 25 moved by a quick threaded spindle 22, or alternatively by a disc-like enlargement ,on the end of a lever mounted for universal movement in a cap screwed on the valve casing, the disc engaging the valve plunger with a cam action. An adjustable check-valve 36 is also provided, and a charcoal or like filter may be incorporated in the inlet connection. Specification 421,141 is referred to.