baber/WOPTO huggingface dataset:
Patent GB-701443-A (GB)
Title: Improved process for eliminating mercaptans from petroleum products
IPC: B01J31/18
Filed: 1950-07-17
Abstract: Petroleum products are sweetened by treating, in the presence of air, with organo-metallic compounds having chelated bonds. These compounds behave as oxidation catalysts for mercaptans. Compounds specified are haemoglobin, chlorophyll, the iron-indigo complex, disalicylal ethylene diimine cobalt and di-(disalicylal ethylene diimine)-aquo dicobalt Solvents for the catalysts such as methyl, ethyl isopropyl and butyl alcohols, ketones, such as acetone, dioxane and pyridine, with or without water, and surface-active agents, for example sodium isopropyl- or butyl-naphthalene sulphonate and sodium sulphoricinoleate may also be added to the mixture.  Petroleum products referred to are gasolines, naphthas and kerosenes.
Patent GB-790326-A (GB)
Title: Improvements in and relating to acrylonitrile polymer solutions
Inventor: FURNESS VERA ISABELLA
IPC: C08L33/20
Filed: 1955-06-21
Abstract: A copolymer of at least 80 per cent of acrylonitrile and up to 20 per cent of a vinyl pyridinium salt in which the anion is thiocyanate, or a blend of a polymer containing at least 80 per cent of acrylonitrile with a polymer of a vinyl pyridiniumsalt in which the anion is thiocyanate so as to give an overall content of not more than 20 per cent of vinyl pyridinium salt, is dissolved in a solvent mixture consisting essentially of water, at least one water-miscible aliphatic liquid containing one alcoholic hydroxyl group and not more than 6 carbon atoms, e.g. methanol, and at least one salt selected from the alkali metal, alkaline earth metal, ammonium and guanidine thiocyanates, lithium bromide and iodide, sodium iodide and zinc chloride, the salt constituting at least 35 per cent by weight of the solvent mixture.  The solutions may be spun into threads which can be stretched and dyed.  In the example methyl acrylate and 2-vinyl pyridine are copolymerized in bulk in the presence of azodiisobutyronitrile and the resulting copolymer quaternized with dimethyl, sulphate while in solution in a mixture of dimethyl formamide and methanol, sodium thiocyanate is then added in the form of a 50 per cent aqueous solution whereby the thiocyanate salt of the copolymer is precipitated, the resulting copolymer salt is then blended with a copolymer of acrylonitrile and methyl acrylate and dissolved in a solvent mixture as described above.  Specifications 692,376, 700,565 and 729,472 are referred to.
Patent GB-777258-A (GB)
Title: Improvements in or relating to providing an appearance of stereoscopic relief in images produced photographically
IPC: G03B35/20
Filed: 1954-06-18
Abstract: 777,258. Stereoscopic photography. GARUTSO, S. E. June 18, 1954, No. 17978/54. Classes 97(1) and 98(2) Coloured light from secondary lenses 2, after passing through camera objective 1,. produces an out-of-focus image overlapping a sharply focused image produced by the objective 1 alone. The horizontal pair of secondary lenses 6, 7 are'staggered vertically and axially, and light from them covers slightly more than one half of the image field of the objective 1. Light from the vertical pair of secondary lenses 8. 9 covers slightly less than one half of the image field. On viewing or projecting the resulting photograph, it is stated that an impression of relief is obtained if the outline of the out-of-focus. image is just indiscernible. Preferably, filters 5 pass primary colours and the raysforming the out-of-focus images form an aerial image in a plane in front of the image plane 11 of the objective 1. When negative secondary lenses are used this image is behind the image plane 11. As: shown, the axes of all .the lenses are parallel and prisms 3, 4 are provided in each of the secondary lens assemblies 6, 7, 8, and 9. The horizontal pair 6 and 7 may be provided with a red and blue filter respectively. The filters 5 may be single ormultiple colour filters and the prisms 4 may cover one half of the area of the objective aperture at full aperture. The colour filters may be replaced by a prism or diffraction grating.
Patent GB-651921-A (GB)
Title: Improvements in or relating to labyrinth shaft packing glands
IPC: F16J15/44
Filed: 1949-06-09
Abstract: 651,921. Stuffing-box substitutes. FREDERICK, S. H., and PARSONS & MARINE ENGINEERING TURBINE RESEARCH & DEVELOPMENT ASSOCIATION. June 9, 1949, No. 17994/48. [Class 122(v)] In a labyrinth gland comprising fins made of a relatively strong material furnished with a tip b of other material which will readily be rubbed away or disintegrated on contact with a member c moving relatively thereto, the fins are machined after the fitting of the tip b or tips b to fin backing elements a. The tips b, e.g. of brass, may be attached by electrolytic deposition, metallic spraying, arc or gas welding.
Patent GB-868270-A (GB)
Title: Improvements in or relating to pressure or temperature actuable electric switches
IPC: H01H35/26
Filed: 1959-05-27
Abstract: 868,270. Thermal switches; fluid actuation of switches. BOSCH G.m.b.H., ROBERT. May 27, 1959 [June 4, 1958], No. 18013/59. Addition to 773,712. Drawings to Specification. Class 38 (5). The trifurcated snap-acting switch member of the parent Specification is replaced by a single flat spring strip slightly bowed to have a snap-action and inherently capable of returning to its original position when the actuating force is removed. The bell-crank lever is modified so as to act positively on the switch member in one direction only. An adjustable back stop is provided for setting the switch differential.
Patent GB-1167295-A (GB)
Title: Rendering Polystyrene Surfaces Wettable
IPC: C08L25/04
Filed: 1968-04-17
Abstract: 1,167,295. Electrically treating polystyrene articles. CAMELEC Ltd. 17 April, 1968 [20 April, 1967], No. 18020/68. Heading C3P. The surface of an article of polystyrene is made wettable by positioning the polystyrene article between two electrodes and discharging an alternating electrical potential of at least 8000 volts between the electrodes and through the polystyrene for a period of time such that the product of the potential and time exceeds 45,000 volt seconds. In Figs. 1 and 2 a polystyrene petri dish (10 and 11) is treated with a discharge from electrodes (12 and 13) connected to a 15,000 volt transformer (16), electrode (13) being positioned by pneumatic cylinder (14) and a timer (17) being used to control the process.
Patent GB-544622-A (GB)
Title: Improvements in or relating to air or gas compressors
IPC: F04B35/00
Filed: 1940-12-23
Abstract: 544,622. Actuating compressors. HOLMAN BROS., Ltd., and MILLS, E. C. Dec. 23, 1940, No. 18034. [Class 8 (i)]. A compressor is driven by an internalcombustion engine, the two having a common crankshaft or coaxial coupled shafts, the crankpins being spaced at equal intervals round the shaft for balancing. A single compressor cylinder 1 may be used, with two engine cylinders 2, 3. The product of the radius and reciprocating weight may be equal for each pin. The shaft bearings 18-20 may be carried by the casing, no bearing being provided on the side of the compressor beyond the engine. The shaft carries valve gearing 22, a flywheel 21, and a fan 11 supplying air for cooling and supercharging. The cooling means may be that described in Specification 544,623.
Patent GB-543112-A (GB)
Title: Improvements relating to electric lamp sockets
IPC: H01R33/08
Filed: 1940-12-23
Abstract: 543,112. Lamp-holders. BRITISH THOMSON-HOUSTON CO., Ltd., and HAWKINS, F. J. Dec. 23, 1940, No. 18049. Addition to 536,273. [Class 38 (i)] A holder for a tubular discharge lamp having contacts 5 that are engaged by the pins 20 on the lamp 23 when it is inserted and turned through 90 degrees, the contacts 5 being thereby displaced into engagement with other contacts 6 connected to supply terminals A, C, as in the parent Specification is provided with an additional contact 21 similar to the contacts 6 and located between them in association with another terminal B. This terminal is connected to a condenser 28 in parallel with the lamp and its series choke 29. The resonant circuit including this condenser and the choke 25 is therefore closed only when the lamp is in the holder.
Patent GB-796491-A (GB)
Title: Improvements in or relating to electric fences
Inventor: HOMER STANLEY HARRY
IPC: E04H17/10
Filed: 1953-06-30
Abstract: 796,491. Fence posts. BONE, S. J. June 29, 1954 [June 30, 1953], No. 18061/53. Addition to 686,476. Class 45. [Also in Group XXXVI] Electrified wire netting is mounted on posts 11 by supports which are adjustably positioned by clips 21, 22. Each support comprises a metal strip 14 which is bent as shown and provided with a hook 19 having a covering of rubber, plastic or other insulating material about its jaw 20.
Patent GB-1535044-A (GB)
Title: Methods of making gripping hands for dolls
IPC: B29C70/68
Filed: 1976-04-28
Abstract: 1535044 Moulding a gripping hand for a doll LESNEY PRODUCTS & CO Ltd 28 April 1976 [30 April 1975] 18087/75 Heading A6S [Also in Division B5] A method of making a gripping hand of a doll comprises supporting an insert 5, arranged to move the fingers and thumb of the hand relative to each other, in a rotation mould and rotationally moulding flexible material e.g. P.V.C. at a speed just sufficient to balance gravitational force. As shown in the figure the insert is used for biassing the thumb and at least one finger of a doll's hand towards each other so that the hand may grip small objects such as a pencil or a piece of paper, release of the object being obtained by squeezing the limbs at the wrist end of the hand. The insert may comprise a pair of polyamide strips 5 interconnected either by a U-shaped spring 6 as shown or by a wire torsion spring and tubular pivot bearing. As shown, the insert is held in the mould by urging the strips 5 towards each other and introducing them into the mouth of a mould part 3 so that formation 8 on the strips 5 locate behind corresponding ones on the mould part 3. The strips 5 lie parallel to one another, but are inclined to an axis a about which the mould 1, 3 can rotate. The strips 5 may be connected to the doll's arm by a band 11, flange or a flexible wire.
Patent GB-1370083-A (GB)
Title: Fluid pressure braking systems for vehicles
IPC: B60T8/18
Filed: 1972-04-19
Abstract: 1370083 Load responsive braking systems AUTOMOTIVE PRODUCTS Ltd 13 April 1973 [19 April 1972] 18165/72 Addition to 1346585 Heading F2F  In an improvement in or modification of the fluid pressure control valve of Specification 1,346,585, the plunger 26 is stepped, the smaller diameter part being exposed to the inlet pressure and the larger part to the outlet pressure, the valve being open when the load due to a spring 44 exceeds the inlet pressure and closed when the inlet pressure exceeds the loading applied by the spring so that an increase in pressure at the inlet is transmitted to the outlet by the plunger, without the valve being reopened, in a proportion determined by the ratio of the cross-sectional areas of the piston exposed to the inlet and outlet pressures.
Patent GB-835263-A (GB)
Title: Improvements in knitted fabrics
IPC: A61F13/08
Filed: 1956-06-12
Abstract: 835,263. Surgical stockings. ROSEDALE KNITTING CO. June 12, 1956 [Oct. 20, 1955; Jan. 27, 1956], No. 18169/56. Class 81 (2). [Also in Group VIII] In the leg and instep of a knitted (Group VIII) surgical stocking, courses of covered rubber yarn 5 alternate with courses in which there are knitted together as one an inelastic thermoplastic yarn 7 and a pre-set torsioned thermoplastic stretch yarn 6. The combined thickness of the yarns 6 and 7, with the stretch yarn fully stretched, is substantially that of the unstretched yarn 5. The welt, heel and toe are knitted of a stretch yarn, the thickness of which, when fully stretched, may be substantially that of the unstretched yarn 5. As the stocking is drawn over the leg, the loops I of the yarn 5 will stretch within the limits imposed by the loops l<SP>1</SP> and l<SP>2</SP> of yarn 6 and yarn 7 respectively.
Patent GB-1478593-A (GB)
Title: Apparatus for spontaneous and artificial respiration
IPC: A61M16/10
Filed: 1974-04-25
Abstract: 1478593 Apparatus for artificial and spontaneous respiration S O ELFSTRAND 25 April 1974 [27 April 1973] 18186/74 Heading AST An apparatus for spontaneous and artificial respiration, comprises an attachment for a gas source, a first one-way valve 7 connected to the attachment and to a respiration hose 13 which leads to a breathing valve 3 comprising an expiratory valve 4 controlled by a diaphragm 5, the attachment also being connected to a second one-way valve 9 connected to a self-expanding bladder 8 which is operable by an attendant for providing assisted breathing of a user of the apparatus, which self-expanding bladder is connected via a channel 10 and a flexible hose 14 to a closed chamber arranged in the breathing valve, which chamber is at least partly confined by the diaphragm, which diaphragm is elastic and is adapted, upon raised pressure within the chamber, caused by the attendant pressing the self-expanding bladder, to expand and to block or pre-load the expiratory valve of the breathing valve, the self-expanding bladder also being, by means of a third, spring-loaded, one-way valve 11, connected to the respiration hose 13 between the breathing valve and the first one-way valve, the third one-way valve being openable to enable a gas flow from the self-expanding bladder to the respiration hose and to the patient when the pressure in the self-expanding bladder rises to a pressure exceeding that necessary for blocking the expiratory valve. The spring of the third oneway valve 11 may be adjustable. For spontaneous breathing, for e.g. anaesthesia, gas is passed from a source (not shown) to a bladder 1, through valve 7, hose 13 and connector 2 to the user. The exhaled gas passes through valve 4 and encounters minimal resistance. For assisted breathing, bladder 8 is pressed and causes diaphragm 5 to block the valve 4. Further pressure causes valve 11 to open and gas to pass to the user. On release of bladder 8 the user exhales. An over pressure safety valve may be incorporated in hose 13.
Patent GB-596066-A (GB)
Title: Improvements relating to cells for the electrolytic production or refining of aluminium
IPC: C25C3/08
Filed: 1945-07-17
Abstract: 596,066. Fused electrolyte cells. SOC. ANON. POUR L'INDUSTRIE DE L' ALUMINIUM. July 17, 1945, No. 18302. Convention date, July 31, 1944. [Class 41] A cell for the production or refining of aluminium has a shell made of concrete or reinforced concrete instead of sheet-iron. The base of the cell may also be of concrete. Fig. 4 shows a cell for refining aluminium by the three-layer process and comprising a lining of magnesite brick walls 18 resting on a carbon bottom 17, both being enclosed in lagging 19 on a base 20 of refractory bricks. The shell 24 of reinforced concrete and the base 25 of concrete are made in one piece. The shell may be inclined outwardly from the edge of the base, e.g., at an angle of 45 degrees, and its thickness may vary between 10 and 20 cms. Production cells are also described, built from refractory brick masonry having a carbon lining with a cathode plate embedded in the bottom thereof, and provided with an outer shell of concrete, or reinforced concrete ; the base-plate may be of sheet iron, concrete or reinforced concrete, or may be dispensed with.
Patent GB-880565-A (GB)
Title: Improvements in or relating to apparatus and process for the pre-expansion of polymeric particles
IPC: B29C44/34
Filed: 1958-06-09
Abstract: In pre-expanding polymeric particles incorporating an expanding agent the particles are fed into a steam atmosphere by means of a flow of steam and heated to a temperature above that at which the expanding agent becomes active, the particles being mechanically agitated to prevent their agglomeration and being removed from the steam atmosphere while capable of further expansion.  The particles may be of polyvinyl chloride, polyvinylidene chloride, polymers and copolymers of styrene, substituted styrenes and polyacrylic esters, copolymers of butadiene or other dienes or of acrylonitrile and styrene in compositions at least 50% styrene, whilst the expanding agent may comprise one or more volatile hydrocarbons.ALSO:In pre-expanding polymeric particles incorporating an expanding agent, the particles are fed into a steam atmosphere by means of a flow of steam and heated to a temperature above that at which the expanding agent becomes active, the particles being mechanically agitated to prevent their agglomeration and being removed from the steam atmosphere while capable of further expansion.  The particles may be of polyvinyl chloride, polyvinylidene chloride, polymers and copolymers of styrene, substituted styrenes and polyacrylic esters, copolymers of butadiene or other dienes or acrylonitrile and styrene in compositions at least 50% styrene whilst the expanding agent may comprise one or more volatile aliphatic hydrocarbons.
Patent GB-152791-A (GB)
Title: Apparatus for continuous distillation and continuous fractionation of petroleum or other hydrocarbons or mixture of volatile liquids
IPC: C10G7/00
Filed: 1919-07-24
Abstract: 152,791. Allan, H. L. July 24, 1919. Film evaporators; separate heater and evaporator apparatus; film evaporators; hydrocarbons, distilling. -- Apparatus for evaporating, distilling or fractionating hydrocarbons &c. comprises a vessel, Fig. 4, divided into three compartments a, b, c separated by tubeplates d, e, spaced slightly apart, and by a tube-plate f, t h e arrangement being such that the oil entering the compartment c by a pipe 9 flows upwards through tubes gin the heating compartment b and through tubes h projecting into the compartment a. The oil flows down the outer walls of the tubes a in the form of a film. The vapours escape by a pipe 14, and the remaining liquid flows by a pipe 10 to the next vessel in the series. The compartment a is fitted with an overflow 32. A plant for fractionating petroleum comprises a series of preheaters of this construction, in which the lighter constituents of the oil are distilled off. The topped oil flows through a series of ordinary oil stills. The vapours generated in the stills are used as heading-media in the pre-heaters. The vapours generated in the preheaters, together with those from the stills which escape condensation in the preheaters, are led to appropriate sections of a fractional condensation plant which consists of a series of vessels, similar to those shown in Fig. 4, together with intermediate condensing pipes. The condensing-pipes may be air or water cooled and may be provided with internal air conduits. Specification 117,277 is referred to.
Patent GB-769895-A (GB)
Title: Improvements in and relating to gear pumps for use in boreholes
Inventor: WALT PETRUS JACOBUS VAN DER
IPC: F04C2/08
Filed: 1955-06-27
Abstract: 769,895. Rotary pumps. SHENKER, I. N. June 27, 1955, No. 18527/55. Class 110 (2). A gear pump, adapted for use in a borehole, has a vertical downwardly-disposed inlet pipe 21 and a vertical upwardly-disposed outlet pipe 15 which communicates with a vertical delivery tube 4 concentrically mounted in which is a drive shaft 16. The gears may be encased in rubber or plastic material and the gear shaft bushes 17 may be of rubber. The shaft 16 may be centralized in the tube 4 by rubber bearings. In a modification two or more gear pumps connected in series are vertically arranged in the pump casing 2. Each pair of gears may be of different volumetric capacity. In another embodiment, Fig. 5, the gears 9c, 10c are of frustoconical shape, the driving gear 9c having its axis vertical.
Patent GB-752081-A (GB)
Title: Improvements relating to coupling devices for electric cables
Inventor: ARTHU FRANCIS PETER HARTHMAN F
IPC: H01R13/621
Filed: 1953-07-03
Abstract: 752,081. Two-part couplings. BRITISH INSULATED CALLENDER'S CABLES, Ltd. July 2, 1954 [July 3, 1953], No. 18575/53. Class 38 (1). In a multi-contact plug or socket connector, pins (or sockets) having enlargements 21 are held captive in recesses 22 in an insulating body comprising a pair of annular members 14, with a rubber gasket 30 between them, and end plates 16, 17 having projections 28 fitting into the central apertures of members 14 to support a screen 24, Fig. 4, which shields the pins connected to the central conductors 2 of cable 1. An outer casing 34 fits over the insulating body which is held together in the casing by a sleeve 35 engaged by a ring 36 screwing into the casing. Disposed between ring 36 and the insulating body is a strain-taking device comprising plates 8, 9 which grip between them an outer layer of conductors 4. The plates are secured together by screws 10 which also clamp a plate 11 to plate 9, these latter plates gripping between them an inner cable screen 5. A plate 12 secured to plate 8 by the screws 10 serves to grip an outer cable screen 6. The casing 34 is finally closed by a nut 40 which compresses a rubber ring 38 against ring 36, and a rubber protecting sleeve 41 is sprung over the casing. A gasket is also provided at the forward end of casing 34.
Patent GB-700912-A (GB)
Title: Improvements in means for separating articles of different specific gravity
IPC: B07C99/00
Filed: 1950-07-25
Abstract: 700,912. Separating solid materials. CRAYMER, H. J. Sept. 4, 1951 [July 25, 1950], No. 18577/50. Class 117 [Also in Groups XVIII and XXX] An apparatus for grading potatoes according to size and separating them from stones, comprises two sets of endless belts 5, 5a which pass around frusto-conical pulleys 4 to define a V shaped trough having a divergent aperture 6 in its base, and a series of resilient strips 15 down which potatoes and stones roll after being deposited on a plate 14 at positions dependent upon their size, the stiffness of the strips being such that they remain rigid only when guiding a potato into the container 19 or 20, but flex under the weight of a stone so diverting it into a container 21. The ungraded potatoes are first deposited in a shoot 11, and are then moved along the trough by the belts 5, 5a on manual rotation of the drive pulleys 4. The device is stated to be suitable for sorting articles other than potatoes and stones and in a modification, the strips 15 are non resilient but are connected with the plate 14 by springs.