baber/WOPTO huggingface dataset:
Patent GB-875112-A (GB)
Title: Improvements in or relating to densification of nitrocellulose
Inventor: GRASSIE VERNON ROBERT
IPC: C06B21/00
Filed: 1959-07-21
Abstract: The process of the parent Specification (wherein cast double-base propellant grains are prepared by agitating fibrous nitrocellulose in an aqueous bath containing an active organic solvent for the nitrocellulose, the solvent being present in a proportion based on the water-solvent mixture to soften and destroy the fibrous structure of the nitrocellulose without dissolving it, and continuing agitation with removal of all the solvent until smooth, hardened, densified and irregular particles of the nitrocellulose are obtained) is modified in that the active solvent used forms a minimum boiling azeotropic mixture with water, and that the bath is heated to at least the boiling point of the mixture during the entire period of contact between the nitrocellulose and the solvent, substantially all the solvent being thereafter removed by distillation while continuing agitation until the nitrocellulose is formed into smooth particles. The solvent may be ethyl or butyl acetate, or methyl ethyl or methyl isobutyl ketone.  A list of additional solvents which may be used is given.  In an example, 105 parts (dry basis) of fibrous water-wet nitrocellulose is slurried with 945 parts of water, the slurry heated to 82 DEG C. and agitated in a vapour-tight vessel fitted with a reflux condenser, 111 parts of methyl ethyl ketone are added, and a mixture of the solvent and water is distilled off while agitation is continued, the final temperature being 100 DEG C.
Patent GB-708912-A (GB)
Title: Improvements in metal coated recording strips
IPC: B41M5/24
Filed: 1950-10-14
Abstract: A metal coated insulating recording-strip for recording-apparatus used in conjunction with measuring instruments comprises a metal coating applied to a water-free, non-hygroscopic, chemically neutral insulating material.  Metal may be applied by evaporation to a varnished surface of a strip of hygroscopic paper which may also be varnished on its other side to prevent deterioration of the metal surface when the strip is stored in rolls or the metal may be directly applied to a strip of water-free, chemically neutral and non-hygroscopic insulating material such as polystyrene.  Cadmium has been found to give a stable metal coating.  In the embodiment described the thickness of the paper, varnish coating and metal coating respectively are 15-20m , 0.8-1m . and 0.05-0.1m . Specifications 389,440, [Group IV], and 569,055 are referred to.
Patent GB-1090403-A (GB)
Title: Biological control of wood rotting fungus in trees
Inventor: RISHBETH JOHN
IPC: A01N63/30
Filed: 1963-06-24
Abstract: A solid water-dispersible composition for the treatment of pine stumps to inhibit infection by Fomes annosus comprises a diluent solid material incorporated with live dehydrated spores or comminuted mycelium of the fungus Peniophora gigantea, the solid composition yielding a directly-applicable fluid composition containing viable units of said fungus after dispersion in water. The diluent solid material may be a water-insoluble material such as talc, chalk, magnesium silicate or starch.  The composition may also contain movo- or disaccharide sugars (e.g. sucrose, fractose, glucose, lactose or maltose), stabilizing and binding agents (e.g. sodium carboxymethyl cellulose or sodium or potassium alginate) and a dispersing agent. The composition may be in the form of granules or tablets, or in the form of relatively fine powder in phials or capsules.  The tablets may be in water-impermeable casings of plastic film (e.g. black polythene). The composition may be made up in the form of dosage units which give a count of at least of the order of 103 viable spores per ml. when dispersed in 100 mls. of aqueous suspension.ALSO:A solid water-dispersible composition for the treatment of pine stumps to inhibit infection by Fomes annosus comprises a diluent solid material incorporated with live dehydrated spores or comminuted mycelium of the fungus Peniophora gigantea, the solid composition yielding a directly-applicable fluid composition containing viable units of said fungus after dispersion in water. The diluent solid material may be a water-insoluble material such as talc, chalk, magnesium silicate or starch.  The composition may also contain mono- or di-saccharide sugars (e.g. sucrose, fructose, glucose, lactose or maltose), stabilising and binding agents (e.g. sodium carboxymethyl cellulose or sodium or potassium alginate) and a dispersing agent.  The composition may be in the form of granules, or tablets, or in the form of relatively fine powder in phials or capsules.  The tablets may be in water-impermeable casings of plastic film (e.g. black polythene). The composition may be made up in the form of dosage units which give a count of at least of the order of 103 viable spores per ml. when dispersed in 100 mls. of aqueous suspension.
Patent GB-699569-A (GB)
Title: Improvements in veneer lathes
Inventor: BUSH JOHN THOMAS
IPC: B27L5/02
Filed: 1952-10-07
Abstract: 699,569. Veneer lathes. SMITH, R. N. Oct. 7, 1952, No. 25136/52. Class 83 (iii). [Also in Group XXIII] A veneer-cutting lathe comprises a cutting- knife 5 on a carriage 4, a pressure-member 6 adjustably mounted above the cutting-knife on an eccentric 7 and one or a pair of adjustable edge-trimming knives 8 for cutting out blemishes extending inwards to varying distances from the ends of the work 3. Each trimming knife 8 is mounted in a carriage 9 slidable between a bar 20 and a face of the pressure-member and is adjustable parallel to the lathe axis by an endless chain or cable 22 and a wheel 23 which may be operated manually or by hydraulic or other power. For locking the manually-operated wheel in position, the handle 25 is pivoted so that it can be engaged between teeth on a graduated disc 26. Each knife can be moved in its carriage 9 into operative position on the work against spring action by a ratchet-lever 12 which rotates a shaft 17 having a pair of cam bars 15 each engaging the end of a spring- loaded plunger 11 on which the knife is mounted.
Patent GB-1063618-A (GB)
Title: Method for continuous casting of profiled strands and continuous casting machine for performing the method
IPC: B22D11/12
Filed: 1964-06-17
Abstract: 1,063,618. Continuous casting-machines; rolling. MOOS'SCHEN EISENWERKE A.G. DER VON. June 17, 1964 [June 25, 1963], No. 25152/64. Headings B3F and B3M. In a continuous casting process the casting is hot formed during solidification by enlarging the circumference of the strand. A slab from a curved reciprocating mould 21 is hot formed in a series of grooved roller passes 27, 27a, 27b to a number of billets 55, Fig. 5, connected by webs 56 which are cut by means 51 after passing through straightening means 45. The grooved rollers may be hollow for the passage of coolant. Other examples using straight or curved moulds, reciprocating or stationary, are described. A dummy bar for starting the casting comprises a rubber bar 92 having the crosssection of the product shown in Fig. 5, with steel cores 95 in the centres of the sections connected to a coupling piece 96, and a head 93 with bolts 99. The laminated chill plates 97 have a temperature after the commencement of casting which allows them to be deformed by, and pass between, the grooved rolls. Reference has been directed by the Comptroller to Specification 967,281.
Patent GB-941486-A (GB)
Title: Improvements in or relating to a process for the manufacture of hydrocyanic acid
Inventor: WARREN JOHN BENJAMIN
IPC: C01C3/02
Filed: 1960-07-25
Abstract: Hydrocyanic acid is prepared by the passage of a mixture comprising ammonia, a hydrocarbon such as methane, or a mixture of hydrocarbons, and oxygen in the vapour phase, at an elevated temperature, through one or more layers of a platinum or platinum alloy gauze catalyst, which has been activated by passing a mixture comprising ammonia, a hydrocarbon such as methane, or a mixture of hydrocarbons, and oxygen through the catalyst together with a volatile sulphidic material, in amount equivalent to 2 to 200 mg. s./m.3 at S.T.P., for at least one hour at an elevated temperature immediately before use.  "A hydrocarbon such as methane or a mixture of hydrocarbons" refers to methane or mixtures of methane with a lesser proportion of its homologues, e.g. ethane, propane and butane.  The preferred ratios of hydrocarbon to ammonia is 0.7 : 1 to 1.8 : 1, of oxygen to ammonia is 0.7 : 1 to 1.8 : 1 and the oxygen content is adjusted for maximum conversion of ammonia during the activation period, which is usually 1 to 2 hours.  Either free oxygen or air may be used.  Normal working temperatures are 700 DEG  to 1250 DEG  C. and the catalyst is not allowed to cool between activation and production of hydrocyanic acid. Suitable sulphidic material includes carbon disulphide, thiophene, hydrogen sulphide, methyl-, ethyl-, propyl- and butyl-mercaptans and dimethyl and diethyl sulphides. Examples are given using 90/10 platinum/rhodium alloy with a sulphur free mixture of 70% methane and 30% hydrogen and with a C : NH3 ratio of 1 : 1 using both air and oxygen with and without volatile sulphidic materials.
Patent GB-1080617-A (GB)
Title: Antibiotic compositions for oral use
Inventor: JOYNER AUSTIN
IPC: A61K31/65
Filed: 1966-06-07
Abstract: Tetracycline compositions for oral use comprise (a) tetracycline and/or oxytetracycline, (b) chlortetracycline and (c) demethylchlortetracycline and/or methacycline i.e. 6-deoxy-6-demethyl-6-methylene-5-oxytetracycline, and/or minocycline i.e. 7-methylamino-6-deoxy-6-demethyltetracycline, and/or doxycycline i.e. 6a  - methyl-6-deoxy- 5 -hydroxy - tetracycline, optionally with conventional excipients.  The tetracyclines may be in the form of the free bases or acid addition salts.
Patent GB-458578-A (GB)
Title: Improvements in and relating to apparatus for heating liquids
IPC: F24H1/20
Filed: 1936-09-18
Abstract: 458,578. Heating water. JUNKERS & CO., GES., 35, Junkerstrasse, Dessau, Anhalt, Germany. Sept. 18, 1936, No. 25429. Convention date, Sept. 20, 1935. [Class 64 (i)] In a tank 10 having a reinforced ring 31 carrying a detachable cover 35, the water inlet pipes 15, 16 and outlet 28 are connected to the reinforced ring. The cover has a passage 37 for an extension of the inlet 15 and has an eccentric annular wall 36 enclosing a float valve 22 controlling the main inlet 15. Water passes by an auxiliary inlet 16 through a throttle 18 connected to a chamber above a diaphragm 17 carrying a water control valve 14 and a gas valve 19, to the bottom 23 of the tank within an annular wall 25 with a gap 24. The water is boiled faster than it enters by pipe 16 and is discharged by steam pressure. When warm water is required, the valve 14 is byepassed by a valve 29. The tank has fins 11 and a casing 38. The connections may be made to the tank at a point furthest from the eccentric wall 36.
Patent GB-1398612-A (GB)
Title: Contactless switch
IPC: H03K17/955
Filed: 1972-05-31
Abstract: 1398612 Touch switching systems MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 31 May 1972 [2 June 1971 (2) 10 June 1971 7 Sept 1971] 25535/72 Heading G1N [Also in Divisions H2 and H3]  A thyristor switching circuit suitable for use in a light, sound or touch-button control of a television receiver includes a bi-stable circuit 13 Fig. 7 controlling a thyristor circuit 14 which provides D. C. isolation from the bi-stable circuit and comprises a transistor Fig. 4 connected to an A. C. supply 24 through a transformer primary winding 26 and a capacitor 27 in series, the secondary winding providing a gate control for a thyristor. As shown, back-to-back thyristors are provided but may be replaced by a triac. When the bi-stable circuit is in the state which makes transistor 23 conducting alternating current flows through the transformer winding 26 to provide an rectified D.C. control voltage for the thyristor. When the bi-stable circuit is in its other state the transistor is non-conducting no alternating current flows and the thyristors switch off.  In Fig. 7 the touching of a metal plate 91 alters the frequency of an oscillator 92 and therefore the output of the filter, this is detected in a circuit 10 and thresholded at 11 for application to a differentiator 12 controlling the bi-stable circuit. Touching the button once changes over the bi-stable circuit to switch on the thyristor and touching a second time changes the bi-stable circuit back and switches the thyristor off. In Fig. 2 (not shown), the input signal for the detector is provided from a microphone or a light detector.
Patent GB-1086000-A (GB)
Title: Treatment of metalworking fluids
Inventor: BARKER GEORGE ERNEST
IPC: A61L2/10
Filed: 1966-06-08
Abstract: 1,086,000. Machine tools. VAN STRAATEN CHEMICAL CO. June 8, 1966, No. 25542/66. Heading B3B. [Also in Division H5] In a metal-working process, the fluid utilized as a coolant or a lubricant is collected and recycled, and, to avoid the infection of this fluid with micro-organisms which may cause decomposition and rancidity, at least part of the recycled liquid is subjected to a sterilization treatment with ultra-violet light. The apparatus used for the process, Fig. 1, comprises a conduit 12 for conveying liquid from the workpiece 10, separation means 14, 15, 25 for separating solids contained in the liquid, a source of ultra-violet radiation 32 to supply radiation at a specified rate, a header tank 26 and tray to convey liquid beneath the ultra-violet source and a reservoir 42 fed from the tray which stores the liquid prior to it being pumped via pump 45 and conduit 44 back to a spray 11 and the workpiece 10. In an alternative apparatus, Fig. VI (not shown), the liquid is exposed as a vertically falling thin film to the ultra-violet radiation.
Patent GB-647045-A (GB)
Title: Radio-frequency parallel bonding
IPC: H05B6/54
Filed: 1948-10-01
Abstract: 647,045. Dielectric heating. MANN, J. W., and RUSSELL, G. F. Oct. 1, 1948, No. 25675. [Class 39(iii)] [Also in Group XXIII] Adhesive layers between abutting edges of wood &c. to be bonded are set by high frequency fields disposed mainly in a zigzig manner in the adhesive planes. In one embodiment wood &c. blocks A with adhesive therebetween are arranged between corrugated electrodes D, E such that the field 6 passes in a zig-zag manner from the valleys 4 to the crests 5. Alternatively the electrodes may each comprise a set of tubes or bars, the upper set being staggered in relation to the lower set. The adhesive first sets along the zig-zag pattern and the remainder may subsequently cold set. Pressure is applied during the heat treatment. U.S.A. Specification 2,434,573 is referred to.
Patent GB-532628-A (GB)
Title: Improvements in or relating to methods of making rubber coated electric conductors
IPC: B29C70/68
Filed: 1939-09-15
Abstract: 532,628. Cables. INTERNATIONAL LATEX PROCESSES, Ltd. Sept. 15, 1939, No. 25908. Convention date, Sept. 22, 1938. [Class 36] Rubber-coated conductors are made by applying layers of a vulcanizable latex compound and a non-vulcanizable (sulphur-free or sulphur-poor) compound, each layer being dried before the next is applied. Preferably the two are applied in alternate layers, or groups of layers, the vulcanizable being applied direct to the conductor. The whole is vulcanized, during which process the sulphur migrates from the vulcanizable to the non-vulcanizable layers, so preventing the former from being over-vulcanized due to the inevitable partialvulcanization occurring as each layer is dried by heating. The amount of sulphur and accelerators in the vulcanizable compound is such that the heat-treatment which a layer receives by the time the insulated conductor is completed, is sufficient to vulcanize the rubber. The non-vulcanizing compound may contain anti-oxidants, accelerators, fillers such as whiting, zinc oxide, pumice, ground glass, calcium silicate, zinc sulphide, or finely-divided silica, according to the colour, age-resistance, and di-electric properties desired.
Patent GB-1303733-A (GB)
IPC: C08J9/35
Filed: 1970-05-29
Abstract: 1303733 Moulding latex-olefin foam BADISCHE ANILIN- & SODA-FABRIK AG 29 May 1970 [31 May 1969] 25916/70 Heading B5A [Also in Division C3] A foamed plastics material is made by foaming a vulcanizable aqueous latex dispersion to from four to fifteen times the volume of the aqueous dispersion, mixing the foamed latex with expanded olefin polymer particles having a diameter of from 1 to 30 mm. and a bulk density of from 5 to 200 g/l., 0À5 to 10 parts by weight of foamed latex, based on the solids content of the latex, being used per part by weight of expanded olefin polymer particles, heating the mixture to from 70‹ to 150‹ C. in a mould, thereby vulcanizing the latex, and the combined expanded plastics moulding is then removed from the mould and dried to remove water. Examples of latex and polyolefin materials are given. The mixture of foamed latex and expanded olefin polymer particles may be compressed in a mould by from 5 to 20% of its original bulk volume prior to being heated to 70‹ to 150‹ C. The mould may be of aluminium and preheated and the compression may be carried out using a fine-meshed wire net. Alternatively the filled mould may be placed inside a second mould of slightly greater dimensions, and whose top and bottom walls are heated, and kept there for a period.
Patent GB-1181665-A (GB)
Title: Sprayers
Inventor: PLACE HAROLD
IPC: B05B7/02
Filed: 1966-06-10
Abstract: 1,181,665. Spray-producers. JOSEPH LUCAS (INDUSTRIES) Ltd. 1 Sept., 1967 [10 June, 1966], No. 25932/66. Heading B2F. A sprayer for providing a disc-like spray pattern comprises a cylindrical elongated body 1 provided at one end (not shown) with an inlet communicating with a passage 3 extending to the other end into which is screwed an end cap 4 the head of which is spaced from the body 1 by a cylindrical hollow member 5 having an external annular groove 6. Across this groove 6, at spaced intervals extend two short parallel tubes 7 arranged diametrically opposite to one another and each of which is transversely slotted at 8. The tubes 7 are secured in the member 5 with their ends communicating with annular galleries 9, 10. The end cap 4 has a blind coaxial bore 11 forming a continuation of the passage 3 and also has sets of radial drillings 12, 13 communicating with the galleries 9, 10 respectively. The body 1 has a radial passage (not shown) intermediate to ends communicating with the passage 3 which is supplied with air under pressure whilst the inlet is supplied with a liquid. Sprays of flat fan pattern, of finely divided liquid suspended in air, are ejected from each of the slots 8. The sprayer is suitable for use in a fuel tank to produce, in the space above the fuel, an incombustibly fuel rich mixture, thus reducing the risk of fire.
Patent GB-482204-A (GB)
Title: Improvements in laquering layers of photographic materials
IPC: G03C11/08
Filed: 1936-09-24
Abstract: 482,204. Protective layers for photographic materials. I. G. FARBENINDUSTRIE AKT.-GES. Sept. 24, 1936, No. 25957. Convention date, Nov. 2, 1935. [Class 98 (ii)] A protective coating of a synthetic resin comprising a polymer of a carboxylic acid, or a mixed polymer of two or more carboxylic acids, or of one or more carboxylic acids with one or more vinyl compounds containing no carboxyl group and capable of polymerization, is applied to a light-sensitive or exposed photographic layer, e.g. a kinematograph film. Suitable resins are polyacrylic, polyrnaleic, polymethylene malonic, and polyacetylene dicarboxylic acids, and the mixed polymers of these acids with styrene, vinyl chloride, or butadiene. The resins may be mixed with other binding agents, e.g. gelatin which may contain a hardening agent such as alum or formalin. In examples, the protecting layers consist of (1) gelatin, sodium polyacrylate, chrome alum, and formalin ; (2) gelatin, the mixed polymer of maleic acid anhydride and vinyl chloride, chrome alum and formalin ; and (3) gelatin, sodium polymethylene malone, chrome alum, and formalin. Specification 450,220 is referred to.
Patent GB-318963-A (GB)
Title: The treatment of vegetable fibres which are used, in the purification by dialysis of caustic soda and like solutions, as osmotic diaphragms
IPC: D06M11/17
Filed: 1929-08-27
Abstract: 318,963. Cerini, L. Sept. 13, 1928, [Convention date]. Diffusion apparatus for Liquids. - Osmotic diaphragms for the purification of caustic soda and like solutions are composed of cotton or other vegetable fibre which has been treated with a magnesium salt solution. This treatment may be preceded by treatment with caustic soda solution and is preferably followed by treatment with a solution of colophony or other resinous material which forms a colloidal compound with the magnesium salt. The Specification as open to inspection under Sect. 91 (3) (a) includes the use of salts of other alkaline earth and earth metals as alternatives to magnesium salts. This subject-matter does not appear in the Specification as accepted.
Patent GB-469291-A (GB)
Title: Improvements in or relating to pressure gas electric switches
IPC: H01H33/82
Filed: 1936-09-28
Abstract: 469,291. Gas - blast switches. STRAUSS, (nÚe RUPPEL), F. Sept. 28, 1936, Nos. 26291 and 26292. Convention dates, Sept. 26,1935 and Feb. 21, 1936. [Class 38 (v)]' A pressure-gas switch with the point of separation, when the current is interrupted, in the open air and a gas-conducting casing through which the pressure-gas flows to the point of separation, has the contact point of the electrodes lying outside the conducting casing when in the switched-on position, and at least a part of the casing is so movable with respect to one electrode that the casing encloses the point of this electrode during the actual breaking of the circuit. When the movable contact 1 in Fig. 1 is separated from the pin contact 2, compressed gas admitted through pipe 16 into the space 5 acts on the jacket 4 as a piston and forces it into the position 4<1>, in which it surrounds the arc-foot on the contact 2. The timing of the application of the gas blast to the contacts is controlled by the packing 34 which co-operates with an enlarged part 35 of the contact 2. A light spring 33 returns the jacket when the gas pressure subsides. The arrangement is applicable to two series-connected breaks, with movable contacts serving as a bridge-member and pivoted about a vertical axis. For high voltages, hemispherical auxiliary electrodes are fitted in order to improve the electrostatic field, the electrode on the jacket being coated with insulation, whereas that on the moving contact is uncoated and is also perforated so as not to impede the blast. Fig. 2 shows a modification in which a cooler 49 for the exhaust gas is fitted and, during the opening movement, the jacket 4 is moved by gas pressure admitted through pipes 16, from the position shown on the left side of the movable contact 1 to that shown on the right side. The jacket is provided with a nozzle 58 which prevents the application of the blast until it is uncovered by the contact 1. The return spring 33 may be dispensed with if the jacket is capable of returning under gravity. In Figs. 3, 4 (not shown), the jacket is moved to operative position in the same direction as the movable contact, and the contacts are abutting rods held together by a leaf spring in the drive. The Specification discloses certain insulating materials of which the jacket can be made, some of which yield gases and vapours when acted on by the arc heat. The jacket may be coupled to the switch-operating mechanism so as to be moved to operative position when the switch is being opened.