baber/WOPTO huggingface dataset:
Patent GB-1455855-A (GB)
Title: Apparatus for fabricating a catalytic device for an exhaust  system for an internal combustion engine
IPC: F01N3/28
Filed: 1973-04-07
Abstract: 1455855 Making exhaust system catalytic devices BRITISH LEYLAND UK Ltd 20 Feb 1974 [7 April 1973] 16792/73 Heading B3A Apparatus for fabricating a catalytic device for an i.e. engine exhaust system comprises a frame, a pair of jaws 11, 12, mounted on the frame and adapted for parallel displacement, a flexible clamp band 10 secured at either end to the clamp jaws, the band serving to compress a sheet 24 of casing material around the catalytic device or catalyst support member 22, and means to secure the sheet while under compression. The member 22 is provided with a thermal insulating layer 23 of knitted wire mesh and the sheet 24, which is of stainless steel, has its edges overlapped. The jaw 11 is rigidly fixed to the frame and the jaw 12 is driven towards it by an hydraulic ram to compress the sheet. When under compression, a tack welder is run along the space between the jaws and after the jaws have been opened a continuous finishing weld is applied along the length of the tack welds. Alternatively the continuous weld may be applied while the sheet 24 is compressed so dispensing with the tack welding stop.
Patent GB-1263148-A (GB)
Title: Antistatic copolymers and their use in the treatment of synthetic fibers
IPC: C08F220/28
Filed: 1969-03-31
Abstract: 1,263,148. Copolymer antistatic agents. TORAY INDUSTRIES Inc. 31 March, 1969 [3 April, 1968; 1 Oct., 1968], No. 16847/69. Heading C3P. [Also in Division D1] Antistatic copolymers are obtained by copolymerizing in water a mixture having a gelating concentration (as defined) of 14-30% by weight and comprising (1) at least one monoester of the formula wherein R 1  is H, methyl or ethyl, R 2  is OH, alkoxy (not more than 18 C atoms), halogen, alkyl sulphide (not more than 18 C atoms), mono- or di-alkylamino (having not more than 18 C atoms), or a phenoxy or naphthoxy radical, and l and m satisfy the relationships 10#l#100 and 0#m<l; and (2) at least one diacrylate or dimethacrylate of a polyol (e.g. ethylene glycol, propylene glycol, polyethylene glycol or polypropylene glycol). The copolymers may additionally be derived from (3) a component selected from acrylonitrile and acrylate or methacrylate esters of alkanols having 8 or more carbon atoms. Copolymerization of the monomers is suitably effected in the presence of a catalyst such as potassium, sodium or ammonium persulphate or hydrogen peroxide, which may optionally be used as a redox combination with a reducing agent such as sodium sulphite, sodium hydrogen sulphite, sodium thiosulphate, oxalic acid or ferrous sulphate. Polymerization can be effected with or without emulsifying agents.
Patent GB-1443266-A (GB)
Title: Thermally responsive valve apparatus
IPC: F16K17/38
Filed: 1974-04-17
Abstract: 1443266 Valves THOMSON INTERNATIONAL CORP 17 April 1974 [18 April 1973 9 May 1973] 16850/74 Heading F2V A thermally-responsive valve for use in a car cooling system has a closure member 14 cooperating with a seat portion on a bridge element 10 supporting one part 44 of a thermallyresponsive actuator 42 guided in a second element 12, the elements being formed from thin metal and each having a horizontal and a vertical annular portion to form a rigid flange 22, 30 on assembly. The flanges may be soldered welded or brazed together and the actuator is received in a sleeve 48 attached to a further closure member 66 controlling a by-pass 64. In a second embodiment, the sleeve and by-pass closure member are omitted.
Patent GB-1337637-A (GB)
Title: Displaying electrical signals
IPC: G02F1/133
Filed: 1971-05-25
Abstract: 1337637 Modulating light BROWN BOVERI & CO Ltd 25 May 1971 [27 May 1970] 16865/71 Heading H4F [Also in Division G1] A voltage display system, see Division G1, may include the liquid crystal p-(.p-ethoxyphenylazo)-phenylheptanoate or enanthic acid-p-(p<SP>1</SP>)-ethoxyphenylazo-phenylester.
Patent GB-545470-A (GB)
Title: Improvements in and relating to apparatus for producing a ground or polished continuous strip of glass
IPC: B24B7/24
Filed: 1940-11-27
Abstract: 545,470. Coating with metals. PILKINGTON BROS., Ltd., WALDRON, F. B.. and GRIFFIN, J. H. Nov. 27, 1940, No. 16994. [Class 82 (ii)] [Also in Group XXIII] The edges of a glass strip may be metallized by the attachment of a wire at intervals while the glass is plastic, a ribbon of foil may be attached by adhesive, metal such as aluminium may be sprayed on, or the edges may be coated with graphite or be silvered and then covered with electrodeposited copper. Silvering solution may be supplied at 41, Fig. 7, to a trough 35 with a low side supporting and sealed by the glass at 37. Overflow is taken care of at 42. The trough 35 is followed by a bath 36 with a copper anode 38, circuit being completed by brushes on the leads 39.
Patent GB-672868-A (GB)
Title: Improvements in and relating to radiographic technique
IPC: G21K1/02
Filed: 1947-06-27
Abstract: 672,868. X-ray grids and method of radiography, BRITISH THOMSON-HOUSTON CO., Ltd. June 27, 1947 [June 28, 1946], No. 17005/47. Drawings to Specification. Class 98 (i). A method of obtaining radiographs consists in filtering electromagnetic radiations, such as X-rays and γ-rays, after they have passed through an object to be examined, through a grid comprising spaced strips of radiationopaque material presented edgewise to the radiation and having a grid ratio of strip width, in the direction of the radiation, to strip spacement, in excess of 8, the intensity of the radiation being regulated to the obtained optimum picture definition. The grid is also suitable for use in the production of an image on a fluorescent screen by X-rays or like radiation. The grid strips may converge on a line passing through the source of radiation and parallel to the grid. It is shown that previous workers have concluded that the grid ratio need not exceed 8, but that when the tube voltage is increased beyond the values possible with the apparatus previously in general use the use of higher grid ratios results in improved definition. For a given grid ratio, the definition is improved by increasing the tube voltage up to an optimum value. Beyond this value, if the ratio is about 8 or less, definition deteriorates, but when the grid ratio is greater than 8, definition increases until a greater tube voltage is reached, after which little further improvement results.
Patent GB-328835-A (GB)
Title: Improvements in or relating to automatic isolating or non-return valves
IPC: F16K15/06
Filed: 1929-06-04
Abstract: 328,835. Blakeborough, R. A., Mosby, S. W., and Melton, G. B. June 4, 1929. Check lift-valves.- An automatic isolating or non - return valve of the axial annular flow type having an internal dashpot has the casing a divided transversely near the outlet end, as shown, at which point the dash-pot cylinder c is supported by a ring b and webs b<1>. The dash-pot piston d is guided by a rod d' projecting towards the inlet a<3> and carries the hollow conicallyformed valve e with skirt, as shown, passing over the cylinder c. The outlet end of the casing supports a conical nose h forming with the open valve a double-ended conical member giving a stream-line annular flow passage i. The rod d<2> of the dash-pot piston is guided in the conical nose, as shown. For valves working in a horizontal position the rod d<1> projects through the nose e<1> of the valve member and is guided in a boss supported by ribs from the inlet part of the casing.
Patent GB-757449-A (GB)
Title: Process for fractionating starch
IPC: F25C1/24
Filed: 1954-06-10
Abstract: The process for fractionating starch disclosed in the parent Specification is modified in that the starch is dissolved, with the application of heat and pressure, in an aqueous solution of magnesium sulphate and/or sodium sulphate and/or ammonium sulphate, the solution is cooled, e.g. to between 20 DEG  and 25 DEG C., until both amylose and amylopectin are precipitated, the precipitate is separated from the mother liquor and mixed with water e.g. at a temperature between 60 DEG  and 80 DEG C., to dissolve the amylopectin, the undissolved amylose is separated from the amylopectin solution and the salt concentration of the latter is then increased to precipitate the amylopectin.  The starch may be dissolved at a temperature between 120 DEG  and 160 DEG C., e.g. in an autoclave, in an aqueous solution containing 25 to 30 g magnesium sulphate heptahydrate per 100 cc.  The solution may contain a reducing substance, e.g. sodium sulphite, which is stable in the solution at the temperature at which the starch is dissolved.
Patent GB-1510043-A (GB)
Title: Selective nitration of aromatic and substituted aromatic compounds
IPC: C07C205/12
Filed: 1976-04-27
Abstract: 1510043 Selective nitration of aromatic compounds AIR PRODUCTS & CHEMICALS Inc 27 April 1976 [2 May 1975] 17117/76 Heading C2C In a process for nitrating an aromatic compound wherein nitric acid is contacted with the compound under conditions for effecting nitration, thereof, the improvement for enhancing the rate of nitration and the selectivity of the nitration which comprises: carrying out said nitration in the presence of at least an effective amount of soluble anhydrite preferably at least about 25% of the theoretical stoichiometric amount to about 500% in excess of the theoretical stoichiometric amount based on the moles of water capable of being generated by the nitration reaction and present as diluent.
Patent GB-199257-A (GB)
Title: Improvements in or relating to vacuum brake apparatus for railway vehicles
IPC: B60T13/46
Filed: 1922-06-21
Abstract: 199,257. Luard, E. S. June 21, 1922. Fluid-pressure. - Consists in improvements in quick-release valves for vacuum brakes for railway vehicles, hand-release valves being also provided. In the arrangement shown in Fig. 1, the non-return valve 5, situated between the passage 3 leading to the upper side of the brake piston, and the passage 2 leading to the underside, is connected by a ball-joint 7 to a rod 8 upon which is mounted a piston valve 9. In the closed position this piston enters an opening 10 in the wall 11, and is guided when out of the opening by ribs 16 on the casing. The end 18 of the rod 8 may be guided in a bearing-plate 19, and a spring 26 may be provided to keep the valve normally closed. The piston has holes 12 adapted to be closed by a valve-plate 13 which may be seated normally by a light spring 15. The train-pipe is connected to the spigot 6. In operation, when air is admitted to the train-pipe to apply the brakes it passes to the application passage 2 through the holes 12 and past the valve 13, the valve 5 remaining seated. To release the brakes, evacuation of the train-pipe is commenced, and the piston 9 moves out of the opening 10 and unseats the valve 5. The pressures on the upper and lower sides of the brake piston are equalized, thus effecting quick release. Evacuation then proceeds past the periphery of the piston 9. To provide for hand release, the stem 20 of the valve 5 is extended into a chamber 23 having a piston 27 with a leak groove 34. The cover 28 has an atmospheric port normally closed by a valve 29. This valve is opened when the hand-release lever 33 is operated, and the atmospheric pressure moves the piston 27 against the stem 20 to open the equalizing valve 5. Fig. 4 shows a modification in which the piston valve 9 is rigidly mounted on the stem of the equalizing valve 5, the plate valve 13 being in the form of a fibre disc. Hand release is effected mechanically by a plunger 35 on the handrelease lever 36. The plunger passes through an airtight opening in the end cover and engages the end of the valve stem 20. In a further modification, the piston 27 of the hand-release device is mounted rigidly on the valve stem 20, and the spring 26 is arranged between this piston and the valve casing.
Patent GB-875622-A (GB)
Title: Improvements in or relating to the production of pure silicon
IPC: C23C16/22
Filed: 1959-05-20
Abstract: Silicon is deposited from a mixture of hydrogen and a halosilane, e.g. trichlorosilane, on to one or more, preferably two, heated silicon filaments arranged in a cylindrical reaction chamber parallel to the axis thereof and downstream of the point of injection of the reactant gas mixture, the injection orifice having a diameter of less than 0.1 inch., preferably less than 0.05 inch, and the gas mixture being injected parallel to the filaments at a rate of more than 5 1./min. and at a velocity of more than 200 m./sec. preferably <PICT:0875622/III/1> <PICT:0875622/III/2> <PICT:0875622/III/3> more than 500 m./sec.  The filaments are preferably 12 inches, more preferably 18 inches long.  Two filaments may be spaced at least 1.5 inches apart, each filament being at least 1 inch from the nearest wall of the reaction chamber.  The reaction chamber may have a diameter of 22-33% of the length of the filaments. The line from the injection orifice to the upstream end of each filament and the plane through the orifice normal to the axis of each filament may intersect at an angle of 20-30 degrees (Figs. 1 and 2).  In a modification (Fig. 3), two injection orifices may be used to produce a single turbulent stream.  Hydrogen and trichlorosilane may be reacted in a mol. ratio of 6-30 to 1, preferably 6-20 to 1.  The filaments may be raised to a temperature of 1150 DEG C. by resistance heating.
Patent GB-273716-A (GB)
Title: Improvements in talking machine records and process of making the same
IPC: G11B3/70
Filed: 1927-06-28
Abstract: 273,716. Mitchell, F. G. June 30, 1926, [Convention date]. Records, blanks for. - Flexible records are made by treating a sheet of celluloid, pyroxvlin, &c. with a solvent to render it tacky, applying a layer of finely powdered thermoplastic material, drying and pressing between heated matrices to impress the record grooves and effect complete union between the coating material and the base. A disc with lugs on opposite sides to facilitate handling is cut from the sheet of celluloid, &c. and is treated by immersion, spraying or otherwise coating with a solvent such as wood alcohol, acetone, emylacetate, ether acetate or alcohol, solutions of camphor in grain alcohol, or a mixture of these. After 15 to 30 seconds a coating of finely powdered thermoplastic material, which may be formed of a mixture of pipe clay, shellac, rotten stone, barytes, carbon black and resin, is applied by sprinkling or spraying, and the disc is dried either in a chamber at 120‹ F. for half an hour to one hour, or in a drying room at 70‹ F. for 2 to 4 days, to drive off gases and moisture. After drying, the discs are pressed between heated matrices to impress the record and consolidate, and the lugs are finally cut off and the edges trimmed.
Patent GB-438613-A (GB)
Title: Improvements in wringers
IPC: D06F45/00
Filed: 1934-06-09
Abstract: 438,613. Wringers. ACME WRINGERS, Ltd., and BURT, P., David Street, Bridgeton, Glasgow. June 9, 1934, No. 17142. [Class 138 (ii)] The shaft 1 of a wringer is driven from a crank handle 8 either directly or through spur reduction gear. For this purpose the crank handle is secured to a sleeve 9 slidable on the shaft and provided with clutch teeth 10 and gear teeth 11. When the sleeve is in the position shown the teeth 10 engage an internal ring of teeth 4 on a hub 2 secured to the shaft so that the wringer is directly driven. When the sleeve is slid to the right the teeth 11 engage teeth 7 of a double gear 6 of which the other teeth 5 engage an external ring of teeth 3 on the hub 2 and the shaft is driven indirectly. The sleeve is retained in its extreme positions by the engagement of the crank handle in one of two annular grooves 12, 13 in the shaft.
Patent GB-1417520-A (GB)
Title: Catalyst for promoting reduction of nitrogen oxides contained in exhaust gases
IPC: B01D53/94
Filed: 1973-04-10
Abstract: 1417520 Reduction catalysts NISSAN MOTOR CO Ltd 10 April 1973 [15 April 1972] 17166/73 Heading B1E [Also in Division Cl] Catalysts comprise 0.02-0.85 wt% Ru and, optionally, a total of 0.001-0.7 wt% Pt, Pd and/or Rh on a monolithic carrier having passages therethrough. The preferred carriers are honeycombs of cordierite, #-spodumene or α-alumina and the catalysts may be made by impregnation, optionally treating with NH 3  and reducing with H 2 .
Patent GB-1196471-A (GB)
Title: Improvements in and relating to Photo-Electric Devices
Inventor: SMOLLETT MAX
IPC: H01L31/0203
Filed: 1967-04-14
Abstract: 1,196,471. Photo-electric devices. ASSOCIATED SEMICONDUCTORS MFRS. Ltd. 8 March, 1968 [14 April, 1967], No. 17257/67. Heading H1K. The container for a photo-electric device 4 comprises an inner member, having a support surface 2 for the device and a hollow skirt 1 extending therefrom, positioned within an outer sealed member having double walls 7 and 8. The copper lead wires soldered to the device 4 by suitably doped indium solder are led out between the skirt 1 and wall 7. A heat sink or refrigerating means may be provided within the skirt whose free end 3 may be curved outwardly. The wires may be connected to pins 15 in a holder 16 by soldering and the gap between the skirt and the outer member is sealed by a filler material 17 such as resin, silicone resin or silicone rubber, loaded with particles of high thermal conductivity material such as aluminium oxide. Windows 10 and 11 of suitable materials, such as synthetic sapphire, germanium or silicon for devices sensitive to infra-red or glass for those sensitive to visible light, are provided, and layers 18 of aluminium either painted on or vacuum deposited to act as shields. The space between the walls of the outer member may be evacuated, filled with a gas such as nitrogen, or partly filled with polystyrene foam. The device 4 is mounted on a carrier 5 of high density alumina. In a further embodiment a layer of plastics material coats the skirt 1 either in the form of a continuous layer or a number of discrete rings, and may be provided with grooves to accommodate the wires 12 which may be secured in position with the aid of adhesive.
Patent GB-120873-A (GB)
Title: Improvements in Internal Combustion Engines.
IPC: F02F1/16
Filed: 1918-10-23
Abstract: 120,873. F.I.A.T. Soc. Anon. March 14, 1917, [Convention date]. Cylinders, cooling.- The air induction pipes 7 are wholly or partly enclosed in the sheetmetal cylinder jacket. The carburettor is attached to a flange 6 situated below the exhaust pipes 5. The pipes 7 branch from this flange and pass between the cylinders to a collecting-chamber 8 situated outside the jacket, as shown in Fig. 4, or inside, as shown in Fig. 7. From the chamber 8, branches 9 lead to the admission valves 2.
Patent GB-521436-A (GB)
Title: Improvements in the preparation of purified latex and the preparation of rubber, gutta percha, balata and the like therefrom
IPC: C08C1/04
Filed: 1939-06-13
Abstract: 521,436. Purifying latex. RUBBERSTICHTING. June 13, 1939, No. 17314. Convention date, June 27, 1938. [Class 70] Latex of indiarubber, balata, gutta percha, jelutong, abiurana, and the like is purified by treatment with lye, preferably sodium hydroxide, under normal pressure and at boiling temperature, and is then subjected to dialysis. Filtered latex to which is added-lye, for instance 10 grammes of sodium hydroxide dissolved in 20 grammes of water' per litre of latex, is maintained at boiling temperature for two hours by means of steam, introduced for example by a perforated heating plate, the liquid being then reduced if necessary to a concentration of 20 per cent. dry content by the addition of water. The latex is then dialysed until no lye reaction can be detected, preferably by passing it through a seamless tube or coil of regenerated cellulose immersed in a current of boiling water. The purified latex is further diluted to about 5 per cent. concentration and subsequently coagulated with weak acid solution. Specification 354,380 is referred to.
Patent GB-770841-A (GB)
Title: Improvements in dishwashing machines
IPC: A47L15/06
Filed: 1955-06-16
Abstract: 770,841. Dishwashing machines. GENERAL ELECTRIC CO. June 16,1955 [June 17, 1954], No. 17425/55. Class 138(1)  A dishwashing machine comprises a tube or vat 1, a rotary impeller 5 (driven by a motor 6) mounted within the tube for circulating liquid in a generally rotary path in the tub and an annular sump 7 depending from the tub adjacent the impeller 5 and surrounding the axis of the impeller, wherein the. sump 7 has a bottom wall 10 of spiral form, upwardly inclined ; in the direction of rotation of the liquid, from a lower level 12 adjacent a drain port 14 to a. higher level 13, connected by a step 11 with the lower level 12 and the port 14. The sump, formed between concentric cylindrical wall portions 8 and 9, depends from the bottom wall 4 of the tub which may be rectangular in cross-section and is provided with a cover 2. The drain port is connected by a pipe 15 with a drain pump 16. In operation liquid together with food soil swirls upwardly around the wall 10 until the food passes over the step 11 whereafter it gravitates to the lowest portion of the sump and is prevented from recirculating by the effect of turbulence adjacent the drain port 14. The food soil is discharged from the tube when the pump 16 is operated.
Patent GB-1098806-A (GB)
Title: Novel benzoxazinethiones
IPC: C07D281/18
Filed: 1966-03-31
Abstract: Compounds of the general formula <FORM:1098806/C2/1> (wherein R1 represents a halogen atom or a C1- 7 alkyl or alkoxy group, R2 represents a phenyl or halophenyl group and the broken line denotes an optional substituent) are prepared by reacting a compound of the formula <FORM:1098806/C2/2> with carbon disulphide in the presence of a tertiary amine and an organic solvent.
Patent GB-558412-A (GB)
Title: Improvements relating to lathe or like machine tool collets
IPC: B23B31/20
Filed: 1942-12-10
Abstract: 558,412. Chucks. WARD & CO., Ltd., H. W., and WILLIAMS, W. T. Dec. 10, 1942, No. 17606. [Class 83 (iii)] Cuttings are excluded from bevel closing chucks by a screwed sleeve f, Fig. 1, having a shoulder engaging the front surface of the collet for effecting closure. A plate h on the sleeve has an aperture i of just sufficient size to clear the bar stock. The plate is attached to the sleeve by screws k to permit a series of plates covering a range of sizes to be employed. In a modification the plate is secured inside the sleeve by a wire clip or spring ring n, Fig. 3, engaging a groove o in the sleeve. Similar plates are shown as applied to a bevel closing chuck actuated by a sliding sleeve, at the front of the chuck, acting through a series of balls.
Patent GB-237245-A (GB)
Title: Improvements in and relating to screw propellers
IPC: B64C11/04
Filed: 1925-07-09
Abstract: 237,245. Junkers, H. July 17, 1924, [Convention date]. Screw propellers.-The blade shanks of screw propellers are secured in or on the boss sockets against vibration so that the parts are held together at two positions, centrifugal forces being met by screwing the shank into or on the socket or by a bayonet joint connection or otherwise. The blade shank 5 is screwed into the boss socket 6 and at its inner end has a taper 9 and saw cuts 14. The shank is held tight at its inner end against the socket by a collar 8 which is screwed up against the taper 9. The collar is rotatable by a bar introduced through a hole 10 in the socket into one of a series of holes 13 in the collar. The blade is locked to the outer end of the socket by a screwed collar 7 with a taper engaging the taper on the socket which is also provided with saw cuts 11. A key 15 is employed to hold the two collars in position. In an alternative construction, the collar is split and the blade shank is solid. In a further modification, the inner collar is not screwed into the socket but is held up against the shank by a spring.