baber/WOPTO huggingface dataset:
Patent GB-852820-A (GB)
Title: Improved vulcanisable silicone rubber stock
IPC: C08L83/04
Filed: 1957-02-06
Abstract: A vulcanisable siloxane composition comprises (1) an organic solvent soluble linear polysiloxane of the unit formula RR 1SiO, in which R is an alkyl radical and R1 is an alkyl or aryl radical, (2) from 1 to 10% by weight of (1) of a liquid siloxane resin having the average general formula (R1O)n R1m SiO 4-n-m,/2 wherei n has a value from 0,5 to 0,9 and m has a value from 1,1 to 1,8, (3) a silica filler having a pore volume of at least 4 c.c per gram and a heat of wetting by water of from 0,3 to 1,0 calorie per cc. of pore volume, and (4) an organic peroxide vulcanising agent.  Pigments and other additives may also be added.  Vulcanising agents specified are benzoyl-, monochlorobenzoyl- and 2 : 4-dichlorobenzoyl-peroxides and t-butylperbenzoate.  In examples compositions consist of (1) a dimethylpolysiloxane of molecular weight of about 350,000, fume silica of the above characteristics, benzoyl peroxide and a liquid methylsiloxane (CH3 : Si = 1 : 2 : 1) containing 8% of ethoxy groups; (2) as in (1) except that the methyl-ethoxy siloxane is replaced by a copolymer of monophenyl-, dimethyl- and diphenylsiloxane units and containing 10% of ethoxy groups; (3) as in (1) except that the dimethylsiloxane is replaced by a copolymer of dimethyland phenylmethyl-siloxane units; and (4) as in (1) except that the vulcanising agent is t-butylperbenzoate or 2 : 4-dichlorobenzoylperoxide.  U.S.A.  Specification 2,541,137 is referred to.
Patent GB-730682-A (GB)
Title: Manufacture of alkyl bromides, more especially methyl bromide
IPC: C07C17/16
Filed: 1953-02-16
Abstract: Alkyl bromides are prepared by reacting the corresponding aliphatic alcohols with bromine and one or more hydrogen-sulphur compounds, and/or compounds which under the conditions of the reaction yield hydrogen-sulphur compounds.  Sulphuric acid is formed simultaneously. The hydrogen-sulphur compound may be hydrogen sulphide or hydrogen polysulphide, e.g. sulphur crude oil; compounds giving rise to hydrogen-sulphur compounds are thiosulphates, dithionates, polythionates and, especially, sulphides and polysulphides such as the alkali and alkaline earth metal sulphides and those of the alkaline earths, e.g. aluminium. The reaction is preferably carried out in the liquid phase at about the boiling point of the alcohol being brominated.  A two-stage continuous process comprises feeding bromine, liquid hydrogen polysulphides and, for example, methanol to a first reactor where the mixture undergoes partial reaction, say 70 per cent, at the boiling point of the alcohol; the brominated product distils off and the liquid component is fed to a second reactor wherein it is externally heated to a higher temperature to complete the reaction.  Minor amounts of ether formed in the second reactor may be recycled to the first reactor for conversion to alkyl bromide. A continuous gas-phase process comprises feeding bromine, the alcohol and hydrogen sulphide or other gasifiable hydrogen-sulphur compound to a reaction column operated at, for example, about 15-35 DEG  C. above the boiling point of the alcohol.  The sulphuric acid formed is withdrawn from the bottom of the column and the gaseous brominated product is passed through a reflux condenser to a water-washing column and then condensed. Apparatus for both processes is described. In an example, methyl bromide is formed in a single-stage batch process from liquid sulphur crude oil (mainly H2S2) at the boiling point of the methanol.
Patent GB-1043133-A (GB)
Title: Improvements in or relating to haymaking machines
IPC: A01D78/10
Filed: 1964-01-31
Abstract: 1,043,133. Haymaking machines, PATENT CONCERN N.V. Jan. 31, 1964 [Feb. 6, 1963], No. 4295/64. Heading A1F. The subject matter of the present Specification is included in Specification 1043134.
Patent GB-588294-A (GB)
Title: Process of treating cellulosic textile yarns, fabrics, and other cellulosic fibrous materials to render them resistant to rotting
Filed: 1944-03-08
Abstract: 588,294. Rot-proofing. FRENCH & SONS, Ltd., T., RACE, E., ROWE, F. M., SPEAKMAN, J. B., BROWN, B. J., and ECLIPSE DYE CO., Ltd. March 8, 1944, Nos. 4330/44 and 8653/45. [Class 140] Cellulosic textile yarns, fabrics, and other cellulosic fibrous materials are rot-proofed by simultaneous deposition thereon or therein of copper and iron compounds or of copper iron and chromium compounds. The material to be treated is first subjected to a wetting process with water and then immersed in a solution which may contain (a) copper sulphate and iron alum or (b) copper sulphate, iron alum or ferric nitrate with chrome alum or chromium sulphate; next it is squeezed or hydro-extracted to remove excess liquor and transferred to an alkaline developing bath which may contain sodium or potassium carbonate or sodium hydroxide to precipitate the metal compounds. The material is finally washed in water and dried. Phenolphthalein or bromophenol red may be used to indicate neutrality in connection with the washing process. Proportions of chemicals used in the solutions and those precipitated in the textile materials are stated. The Specification also mentions processes for rot-proofing textile materials by application to them of mixed iron and trivalent chromium compounds, of hexavalent chromium compounds, and of insoluble or partially soluble copper compounds.
Patent GB-278242-A (GB)
Title: Improvements in or relating to rotary pumps
IPC: F04C2/04
Filed: 1927-02-16
Abstract: 278,242. Laraque, R. Feb. 16, 1927. Addition to 266,342. Fixed-abutment type ; discharge and suction pipes for pumps. - The rotary pump dscribed in the, parent Specification is modified either by fixing the outer drum 3 and making the sleeve 2. on which the inner hollow cylinder 9 is carried by eccentric bosses, rotary, or by reversing the disposition of the peripheral ports 23, 22 in the drum and inner cvlinder, or the direction of rotation so that the sleeve 2 serves as the discharge passage. The outer enclosing casing 1 is dispensed with in the first modification and, if the pumped fluid is air, also in the other modifications.
Patent GB-401149-A (GB)
Title: Process of producing material resembling artificial leather
Filed: 1933-02-13
Abstract: Vegetable or like fibre is formed into a fleece so that the individual fibres are as free as possible from parallelism, a plurality of fleece layers is laid in zig-zag formation on one another, wetted and compressed, sprayed with a coloured rubber emulsion, dried and vulcanized.  The fleece layers may be arranged on one another on a reciprocating table or by winding to and fro on a calendar roller to the desired thickness.  The material is a substitute for leather such as deer skin and may be used as washing leather, for packing material for bookbinding, or, in view of its heat and sound insulating properties, for wall facing.
Patent GB-1040812-A (GB)
Title: Improved method of production of charcoal pellets
IPC: C10L5/02
Filed: 1964-02-03
Abstract: A bath of molten metal, e.g. zinc, lead, copper, for coating metals by hot dipping is covered with a layer of charcoal pellets formed by grinding charcoal, forming into a plastic mass with a binder, e.g. tallow or other oil or fat, extruding to form a rod, forming into pellets, and drying at a temperature which will also effect carburisation.ALSO:Charcoal pellets, for covering a molten metal bath, are formed by grinding charcoal, forming into a plastic mass with a binder, e.g. tallow or other oil or fat, extruding to form a rod, breaking it into pellets, and drying at a temperature which will also effect carbonization.
Patent GB-786754-A (GB)
Title: Silicic acid or silicic acid-containing pigments
IPC: D21H19/40
Filed: 1955-02-15
Abstract: An alkali metal silicate is prepared by interacting aqueous solutions of an alkaline earth metal chloride, and an alkali metal silicate, in a zone of a reaction chamber at which mixing occurs with a shearing force corresponding to a velocity gradient of less than 100 sec.-1, the concentration of the solutions being at least 0.2 molar but not more than that at which the reaction product is still capable of flowing.  The velocity gradient equals circumferential speed of stirrer divided by distance from stirrer. Lowspeed stirrers having a circumferential speed of less than ca. 5 m/sec., e.g. gate or blade stirrers driven via a reducing gear, may be used.  With such stirrers 0.6-0.8 molar solutions of calcium chloride and sodium silicate may be interacted. High-speed stirrers may be used provided the reacting solutions are mixed at a suitable distance from the stirrer. Subsequent high speed agitation of the product is not detrimental. The reaction may be carried out batch-wise, preferably by addition of the solution of alkali metal silicate to the solution of alkaline earth metal chloride, or continuously.  The precipitation is preferably carried out at room temperature.  When adding sodium silicate to alkaline earth metal chloride the Na2O : SiO2 ratio of the silicate is preferably greater than 1 : 3.3, e.g. 1 : 2.2, until the stoichiometric point is reached whereafter the ratio is preferably 1 : 3.3 or less.  The amount of the excess is preferably such that it can just be detected in the filtrate and a pH of 10.5 is reached, i.e. 40-45 per cent.  This excess can be neutralized with calcium chloride.  Instead of employing a silicate having a Na2O : SiO2 ratio greater than 1 : 3.3 alkali metal hydroxide may be added to the alkaline earth metal chloride solution.  The product may be partially or completely decomposed with sulphuric acid.  The products of the invention may be used in the form of an undried filter cake having a solid content of ca. 20 per cent, or may be dried and ground.  Drying may be carried out at 110 DEG  C. or higher temperatures, preferably 500-900 DEG  C.
Patent GB-815378-A (GB)
Title: Improvements in parachute equipment for aviators
IPC: B64D17/34
Filed: 1956-02-14
Abstract: 815,378. Parachutes. HARRISON, A. J. Feb. 14, 1957 [Feb. 14, 1956], No. 4593/56. Class 4. In parachute equipment wherein a stablilizing parachute stabilises an aviator during a free fall, a barometric device, armed by the same act as the release of the stabilising parachute, is provided which at a predetermined altitude, frees a main parachute for withdrawal by the stabiliser. A pack 10 formed with harness 12 and waist belt 13 comprises a front flap 14 and top and side flaps 15 and 16 interconnected by cones 17 locked by pins 18. The interior of the pack is divided into two compartments 23 and 24 by flaps 19 and 20 secured together by loops 21 engaged by a lazy line 43 secured to the crown of the main parachute, the stabilizing parachute being housed in the compartment 23 and the main parachute in the compartment 24. The main lift webs 26 of the harness are provided with releasable attachments 27 for two straps 28 secured to the lines of the stabilizing parachute 44 and to the lazy line 43, the attachments 27 being controlled by rip cords 29 operated by a barometric device 25 which may be as described in Specification 585,265 and is housed in the compartment 24. The locking pins 18 may be released by a static line 33 secured either to an ejection seat or the aircraft or by a manually operated release 34 and the static line 33 is connected also to barometric device 25. In operation when the aviator leaves the aircraft, the static line 33 will withdraw pins 18 to free flap 15 to release the stabilizing parachute from compartment 23 and at the same time will arm device 25, which at a predetermined altitude will free attachments 27 to enable the parachute 44 to run free and tension line 43 to free loops 21 and withdraw the main parachute 48. A drogue parachute 46 is attached to stabilizing parachute 44. Specification 739,287 also is referred to.
Patent GB-646969-A (GB)
Title: Improvements in or relating to a process of preparing polymerization products in granular form
IPC: C08F267/02
Filed: 1948-02-17
Abstract: Polymers or copolymers comprising vinyl halides are made in granular form by polymerizing a vinyl halide alone or admixed with another polymerizable compound in aqueous dispersion using as dispersing agent a heteropolymer of vinyl acetate and maleic acid or maleic anhydride.  Specified vinyl halides are the chloride and bromide. Specified polymerizable compounds are vinyl acetate, propionate, butyrate, benzoate; methyl, ethyl, butyl or allyl acrylate or methacrylate; styrene, ortho-chlorostyrene, para-chlorostyrene, 2,5-dichlorostyrene, 2,4 - dichlorostyrene, alphamethyl styrene and para-ethyl styrene; divinyl benzene; vinyl naphthalene; butadiene; chloroprene; acrylic acid amide, acrylic acid anilide, acrylonitrile; methyl, ethyl, propyl, butyl, amyl, hexyl, heptyl, octyl, allyl, methallyl and phenyl esters of maleic, crotonic, itaconic or fumaric acid.  The polymerization is preferably effected in the presence of a catalyst such as benzoyl, lauroyl, oleyl, toluyl, or ditertiary butyl peroxide.  The polymerization mixture may also include compounds such as ferrous or ferric nitrate, chloride, sulphate, acetate, to improve the heat-stability of the polymers or copolymers.  The polymerization mixture has initially a pH less than 7 and, if desired, lower pH values may be obtained by adding acids, such as hydrochloric, sulphuric, nitric, acetic, formic, chloracetic, benzene sulphonic acid or toluene sulphonic acid.  The atmosphere above the polymerization mixture may be freed from oxygen or replaced by carbon dioxide, vinyl chloride or nitrogen.  The heteropolymer may be prepared by polymerizing a mixture of the monomers in bulk or solution, preferably in a liquid which is a solvent for the monomer but not for the heteropolymer.  In an example, vinyl acetate, maleic anhydride and benzoyl peroxide, dissolved in benzene, are heated for two to three days and after removal of the benzene, the heteropolymer is obtained as a white amorphous powder.  The benzene may be replaced by toluene or xylene.
Patent GB-586424-A (GB)
Title: Improved clothes washing machine
IPC: D06F13/00
Filed: 1945-02-24
Abstract: 586,424. Washing-machines. CONSTANTINE, W. W. (General Motors Corporation). Feb. 24, 1945, No. 4672. [Class 138 (ii)] In a clothes washing-machine comprising a tub having mounted in its base a hollow agitator which is outwardly flared at its bottom, a detergent chamber, having a perforate wall in open communication with the tub, is provided in the agitator, a removable cover at the top of the chamber permitting the insertion of the detergent. In the machine shown in Fig. 1, a clothes receptacle 10 and an agitator 11 are adapted to be rotated and reciprocated respectively by an electric motor in a casing 12, the two tubs 13, 14 comprising the receptacle being secured to a sleeve 15 connected to a motor-driven rotatable cage 16 while the sleeve 15 surrounds a shaft 17 secured by a spider 23 to the agitator and reciprocable by mechanism 18. The agitator 11 is formed with a hollow cylindrical chamber 21 containing a screen 22. In operation, the clothes and water are first placed in the receptacle 10, a cover 24 removed from the chamber 21 and soap or other detergent inserted therein and the cover replaced. Thereafter the agitator is reciprocated to dissolve the soap and disseminate it into the water in the receptacle 10 by the action of the water flowing back and forth between the receptacle and chamber 21 through the spider 23 and screen 22. In one modification, the detergent-containing chamber communicates through holes in its periphery with the receptacle, and, in another, the chamber is formed of rubber and is made separate from the remainder of the agitator. In another construction, Fig. 4, 5, the agitator 11c is rotatably oscillatable, though a combined vertical and rotary oscillation may be produced if desired. Hollow radial vanes 30 aid in agitating the clothes and one or more radial or spiral vanes 33 may also be placed inside the chamber 21c into which the detergent is introduced after unscrewing the cover 24c. Upper and lower openings 31, 32 are formed in the agitator proper and other openings 32c in the vanes 30 to permit circulation of the water and dissemination of the dissolved soap. In a modification, the chamber for containing detergent is arranged at the bottom of the agitator between the radial vanes.
Patent GB-578013-A (GB)
Title: Improvements in crystal contacts of which one element is silicon
IPC: H01L21/00
Filed: 1943-03-22
Abstract: 578,013. Silicon alloys. GENERAL ELECTRIC CO., Ltd., and RANSLEY, C. E. March 22, 1943, No. 4676. [Class 90] [Also in Group II] An alloy for use as a crystal contact is obtained by incorporating about 10 per cent. or more of chromium or molybdenum or both in silicon. Smaller quantities, e.g., 1 per cent, of aluminium or beryllium or both may also be added. The crystal may be further treated as described in Specification 577,181. Specification 577,976 also is referred to.
Patent GB-695266-A (GB)
Title: Glassworking methods
Inventor: DOYLE CHARLES WILLIAM
IPC: C03B7/14
Filed: 1952-02-22
Abstract: 695,266. Glass manufacture. CORNING GLASS WORKS. Feb. 22, 1952, No. 4773/52. Class 56. A method of forming glass articles includes successively feeding a mould with a series of charges of molten glass, depositing at least one charge of the series on one surface portion of the mould and forming it into an article, and depositing a subsequent charge of the series on another surface portion of the mould at least partly different from the first .surface portion and forming the charge into a similar article. As applied to the pressing of television picturetube panels on an indexing-type rotating table press, the moulds are rotatably mounted about their own axes and following each use, each of the moulds is turned through an. angle between 15 degrees and 30 degrees. Alternatively the trough employed to direct the charges into the mould is slightly moved relative to the mould from time to time. Either arrangement may be manually or automatically controlled. If the articles produced are not circular in cross-section both the mould and plunger may be turned through the same angle about their common axis. By such arrangements constituents volatilised out of the charges of molten glass are distributed approximately uniformly over the mould surface and also local heating of the mould is avoided.
Patent GB-1375094-A (GB)
IPC: B60N2/62
Filed: 1972-02-02
Abstract: 1375094 Adjustable air-crew seats IPECO EUROPE Ltd 30 Jan 1973 [2 Feb 1972] 4819/72 Heading A4J An air-crew seat has separately adjustable thigh supports 4 on each side of the seat 2, each thigh support being resiliently urged upwardly and moveable downwardly by pressure applied from above about a pivot axis 14 which is adjacent the upper surface of the seat, the mechanisms for allowing such pivotal movement being contained below the thigh supports and the seat such that there is no obstruction to the depression of the upholstery of the thign supports and seat in the region of the pivot axis. Downward pivotal movement of each support about the axis 14 is effected by providing each support with a pair of parallel downwardly extending struts 9 having studs 8 at their ends engaging in slideways 7 formed in the underside of the seat, an arm 12 being pivotally connected to each of the struts and the two arms being pivotally inter-connected by a shaft 13. Each thigh support is resiliently urged upwardly by causing the shaft 13 to rotate counter-clockwise by connecting the shaft 13 through rods 20 fast with the shaft and pivoted links 21 to triangular plates 22 pivoted to the underside of the seat on an axis 23 and urged to the right, as shown, by a rubber band tension spring 25 connected at its ends to the two plates 22 and passing about a pulley. A shaft 30 interconnects the two plates 22 and is movable to alter the uppermost position of the thigh support by a pair of rollers 34 on a scissor linkage 31 connected to right hand and left hand threaded nuts 32 on oppositely threaded sleeves of a rotatable shaft 33 which is common to both thigh supports. In the modification shown in Fig. 6 the upward spring-loading is applied by a single lever arm 20' connected to the shaft 13 and to a pulley about which a rubber band 25 passes, the spring being connected at its ends to the underside of the seat. In this modification the uppermost position of the thigh support is controlled by a nut 43 within a tubular guide pivotally mounted on lugs 48 depending from the thigh support the nut having opposed pins 44 engaging with slots 45 in the guide such that, rotation of a shaft 42 in one direction causes rearward movement of the nut and hence downward pivoting of the thigh support to alter the uppermost position of the thigh support. However downward pivoting by pressure may still be effected as a result of the pin 44 and slot 45 connection.
Patent GB-166614-A (GB)
Title: Improved apparatus for use with pneumatic rock drills for preventing the escape of bore hole dust
IPC: E21B21/00
Filed: 1920-04-27
Abstract: 166,614. Collier, W., and Rees, M. April 27, 1920. Percussive drills.-For removing dust from a bore hole a divided hinged cylinder A fastened by a clip is placed round the drill, being packed by a divided rubber ring, and carries a branch B joined to a suitable pipe. A compressed-air jet C is used to suck out the dust.
Patent GB-516865-A (GB)
Title: Improvements in or relating to projectiles comprising a reaction propulsion devices
IPC: F02K9/10
Filed: 1938-06-27
Abstract: 516,865. Projectiles; fuzes. SAGEB SOC. ANON. DE GESTION ET D'EXPLOITATION DE BREVETS. June 27, 1938, No. 5020/39. Convention date. June 28, 1937. [Class 9 (i)] Relates to projectiles which are propelled, after leaving the gun, by a longitudinallyperforated reaction charge carried in a container Fig. 3, attached to the base of the shell 30, the gases from which charge emerge through rearwardly-directed nozzles 5. According to the invention, the reaction charge, such as 67, is separated from the base of the shell by studs or stops 62, Fig. 4, which provide free access for the gases to the jets 5. The reaction charge may be sub-divided in various ways, such, for example, as shown in enlarged end views in Figs. 8 and 11, so as to provide a multiplicity of longitudinal channels or passages and ensure uniform burning of the charge. The charge may, be ignited by the gases from the,gun cartridge, which may rupture a diaphragm closing an opening 65 in the base of the container 2, or may operate through a delay-action fuze, Fig. 6. The fuse comprises a striker 70 which is driven by the gun gases onto a cap 71 which ignites through a slow-burning composition 73, an ignition charge 74, which ruptures a seal 75 and ignites, the reaction charge in the container. The nozzles 5 are closed by membranes or by conical stoppers 66, Fig. 7, which are only ruptured when a sufficient pressure is developed in the container.
Patent GB-585444-A (GB)
Title: Improvements in or relating to electromagnetic relays
IPC: H01H50/24
Filed: 1944-04-28
Abstract: 585,444. Electromagnetic relays. STANDARD TELEPHONES & CABLES, Ltd., TOWNER, S. H., and CHILDS, P. A. April 28, 1944, No. 5079/46. Divided out of 585,401. Addition to 566,778. [Class 38 (v)] In a relay having a substantially flat armature 6 arranged between a contact spring pile-up 12 and the core and winding 2, 1, the armature, Fig. 5, is centrally pivoted about an edge 10 and is held located by slots 16 co-operating with ears bent out sideways from a fixed frame.
Patent GB-100921-A (GB)
Title: Improvements in and relating to Tobacco Smoking Pipes.
Inventor: PETERS ALEXANDER
IPC: A24F1/10
Filed: 1916-04-10
Abstract: 100,921. Peters, A., and Peters, M. April 10, 1916. Tobacco pipes. - In pipes adapted to be fed with tobacco from the bottom of the bowl while in use, the screwed or other plug b is formed with a recess c and a head d with perforations e for the passage of smoke.