baber/WOPTO huggingface dataset:
Patent GB-499606-A (GB)
Title: Improvements in or relating to pressure relief valves
IPC: F16K17/04
Filed: 1937-12-03
Abstract: 499,606. Relief valves. SCHWEIZERISCHE LOKOMOTIV-UND MASCHINENFABRIK. Dec. 3, 1937, No. 33474. Convention date, Dec. 5, 1936. [Class 135] A relief valve for controlling the pressure in fluid couplings such as are described in Specification 207,318, [Class 80 (ii)], has a valve member d arranged in a branch conduit b and loaded by a spring e interposed in a closed chamber between the valve and an adjustable plunger which may be entirely relieved from fluid pressure or subject to the full pressure of the fluid fed to the coupling or to an independent fluid pressure. As shown, pressure oil is fed to the coupling by a pipe c connected to the relief valve casing a by the pipe b. Pressure medium such as compressed air is admitted to the space h behind the plunger g by a pipe i under the control of an electromagnetically-operated shuttle valve v<1>, v<2> which connects the pipe i to atmosphere at E or to the compressed air supply pipe i<1>. The movement of the plunger g is limited by an adjustable closure member k. In the modification, Fig. 2, the side of the plunger g away from the valve member is loaded by a further spring o and is always exposed to the atmosphere through a passage r. Pressure medium for adjusting the plunger g acts on an annular face g<1>. An adjustable stop q is provided. The switch s for controlling the valve v<1>, v<2> may be such as to open again after a predetermined delay when used in conjunction with the driving controller of a rail power vehicle described in Specification 501,380. Similar valves with different loading may be applied to the one conduit c to give several stages of pressure reduction in the coupling. According to the Specification as open to inspection under Sect. 91, the supply of compressed air to the adjustable plunger may be controlled by an adjustable pressure regulating valve. This subject-matter does not appear in the Specification as accepted.
Patent GB-929573-A (GB)
Title: Method for heat-treating semiconductor material
Inventor: STERLING HENLEY FRANK
IPC: C01B33/029
Filed: 1958-10-21
Abstract: Silicon is deposited on to a mass of silicon contained in an externally cooled crucible by passage of silane at above or below atmospheric pressure through an arc discharge passing between the mass of silicon and an internally cooled electrode.  The crucible may be of silver.  The electrode may be of silver, molybdenum, tungsten or silica.  As shown a crucible 1 has a water-cooling jacket 2 and an electrically insulated cover 6 which carries a silane inlet 14, reaction product gas outlet 15, and an internally water-cooled electrode 10.  The electrode is raised during deposition to maintain the distance between the electrode and the deposited silicon constant.  Specifications 745,698 and 827,676 are referred to.
Patent GB-465031-A (GB)
Title: Improvements relating to the mounting and securing of gasholder guide-roller carriages
IPC: F17B1/00
Filed: 1936-12-08
Abstract: 465,031. Gas holders. DEMPSTER, Ltd., R. & J., and SHEERAN, A. J. Dec. 8, 1936, No. 33622. [Class 54] The bed-plates 3 of the guideroller carriages of spirally guided gas holders are secured to seating blocks 6 welded to the upper faces of the dip members 2. Preferably the bed-plates are welded to studs 8 threaded into the blocks 6 and protruding slightly above the bed-plates.
Patent GB-1576766-A (GB)
Title: Device using the degradation of a polymer for detecting and permanently indicating a transient reheating of a deep-frozen product
IPC: G01K11/06
Filed: 1977-08-10
Abstract: In order to provide reliable information on whether or not a frozen product has been constantly maintained at a temperature situated below a particular safety threshold, for example -18 DEG C, the device comprises a covering (2) made of an organic polymer which can progressively degrade by cracking at a temperature below -18 DEG C, completely filled with a coloured solution which solidifies at -18 DEG C with an increase in volume. In the event of reheating, the liquid expands and colours a blotting paper (3) wrapping the covering. This device applies to the conservation of products of biological origin. <IMAGE>
Patent GB-1075643-A (GB)
Title: A process for the production of polymers of vinyl chloride
Inventor: HARDT DIETRICH
IPC: C08F263/02
Filed: 1964-08-18
Abstract: Graft copolymers are made by subjecting to free radical polymerization (A) a preformed copolymer of ethylene and a vinyl ester of a C1-C8 monocarboxylic acid, the copolymer containing 20 to 80% by weight of the ester, and (B) a mixture of 60 to 95% by weight of vinyl chloride and 5 to 40% by weight of one or more other copolymerizable monomers, the preformed copolymer and monomer mixture being used in amounts such that the resulting graft copolymer contains 25 to 67% by weight of the former.  Specified monomers for use with vinyl chloride are acrylic and methacrylic acids and the esters and amides thereof, maleic anhydride, mono- and di-esters of maleic and fumaric acids, and esters of vinyl alcohol.  The graft polymerization may be carried out in organic solvents, aqueous emulsion or, preferably, aqueous suspension.  The examples describe grafting on to ethylene-vinyl acetate copolymers in aqueous media mixtures of vinyl chloride and: (1 and 3) hydroxypropyl methacrylate and monododecyl maleate, the resulting copolymers being cross-linkable by the hexamethyl ether of hexamethylol melamine or hexamethylene diisocyanate, (2 and 10) monopropyl maleate, (4) vinyl acetate, (5) ethyl acrylate and monopropyl maleate, (6 and 9) hydroxypropyl methacrylate, (7) ethyl acrylate, (8) n-butyl acrylate, vinyl acetate and hydroxypropyl methacrylate, (11) n-butyl acrylate, (12) n-butyl acrylate and the butyl ether of N-methylol acrylamide, and (13) ethyl acrylate and vinyl chloroacetate.  Polymerization in the above processes is catalysed by lauroyl peroxide and azodiisobutyronitrile.  The graft copolymers are used to make films, impregnations and coatings.
Patent GB-1189725-A (GB)
Title: Method for Communicating Information Between Artificial Satellite and Ground.
IPC: H04N5/38
Filed: 1967-07-21
Abstract: 1,189,725. Radio signalling. HITACHI Ltd. 21 July, 1967 [5 Aug., 1966], No. 33731/67. Heading H4L. In a system for transmitting by artificial satellite pictures relating to weather conditions, the satellite 12, Fig. 3, follows an orbit 14 round the earth 11 and co-operates with a ground control centre 13 situated in an area S 0  for which the weather conditions are to be determined, and also co-operates with a plurality of radio receivers 15 in an area S 2  which are each concerned only with local weather information as covered by area S 1  by direct radiation from the satellite. In order to cover the range S 0  it is necessary to take a plurality of pictures each covering the range S 1  and this information is stored in the satellite and received at centre 13 on the next orbit. The satellite carries a television camera 20, a storage device, e.g. a tape recorder 21, a transmitter 22 and a control device 24. When the satellite is passing over area S 0  a command signal from centre 13 (or a programme previously stored in the satellite) causes the camera to operate via switch 25 on a system, for example, with 800 scanning lines, a picture frame time of 6À5 secs. and an exposure interval of 108 secs., switch 27 being kept open. These pictures are recorded at 21 and on the next orbit a command signal from centre 13 causes them to be transmitted to the centre for recording and display at 30, 31. When the satellite is passing over area S 2  a stored command signal or a command signal from a relay station associated with centre 13 operates switch 27 to stop the storage operation, and via switch 26 causes the camera to operate on a system, for example, with 800 scanning lines, a picture frame time of 200 seconds, and an exposure interval of 208 seconds, this information being transmitted directly to ground.
Patent GB-521468-A (GB)
Title: Improvements in de-sizing agents
IPC: C12N9/96
Filed: 1938-11-21
Abstract: 521,468. Amylases. KALLE & CO. AKT.- GES. Nov. 21, 1938, No. 33786. Convention date, Dec. 1, 1937. [Class 14 (ii)] [Also in Group IV] Amylases are protected against poisoning by heavy metals by mixing with iminodiacetic acid or a water-soluble salt thereof or a substitution product of these compounds. These are of the general formula wherein R 1  to R 5  stand for hydrogen or an aliphatic or aromatic residue. Specified compounds are nitrilotriacetic acid, imino-diacetic acid, N-methylimino-diacetic acid, ethylenediamine-tetracetic acid, hexyl-, phenyl-, αα- dimethyl- or αα<SP>1</SP>-dimethyl-nitrilotriacetic acid, N-(o-carboxy-phenyl) imino-diacetic acid and diethylenetriamino-acetic acids. Amylases of any origin, e.g., pancreas and bacterial amylases, may be used and the protective agent may be added during manufacture. Other usual adjuvants may be present.
Patent GB-1030212-A (GB)
Title: Improvements in and relating to polyacrylonitrile solutions
Inventor: WILSON DONALD LEONARD
IPC: C08F20/44
Filed: 1961-09-21
Abstract: Solutions of polyacrylonitrile or copolymers containing at least 80% of acrylonitrile are obtained by polymerizing acrylonitrile, with comnomers, if desired, in a concentrated aqueous solution of an inorganic thiocyanate at a pH of 3.5 to 8 in the presence of an azo initiator and a reducing agent having the formula:- <FORM:1030212/C3/1> where R is alkyl, substituted alkyl or hydrogen, and X is a cation or hydrogen, e.g. d-xyloascorbic, erythroascorbic and araboascorbic acids and salts thereof.  Azobisisobutyronitrile is specified as an initiator.  Comonomers specified are methyl acrylate, vinyl acetate, vinyl pyridine and styrene.  When the reaction is carried out in contact with a ferrous metal the pH of the polymerization mixture should be from 6 to 8.
Patent GB-635798-A (GB)
Title: Improved synthetic resin
IPC: C08G14/06
Filed: 1947-12-22
Abstract: A resin capable of being shaped under heat and pressure is formed by reacting formaldehyde and a phenol with the product obtained by reacting a fatty acid amide containing a total number of carbon atoms from 12 to 22 with an equimolecular proportion of formaldehyde. Preferably 4 to 20 parts of the amide/formaldehyde products are employed per 100 parts of the phenol.  In an example, oleamide and paraformaldehyde are reacted at 70 DEG  to 80 DEG  C.  The product is mixed with cresylic acid, formalin, and, as catalyst, an alkaline dispersion of protein, and the mixture is reacted at 85 DEG -100 DEG C., and dehydrated.  A solution of the resin in alcohol is used to impregnate cotton, linen, or paper sheets which are bonded under heat and pressure to form mouldable laminates. Specifications 456,364, [Group III], 538,922 and 567,128 are referred to.
Patent GB-935617-A (GB)
Title: Improvements in or relating to tools for the removal of lids from containers and the like
IPC: B67B7/14
Filed: 1960-10-04
Abstract: 935,617. Pliers; prizing tools. D. J. BARRETT. Dec. 15, 1961 [Oct. 4, 1960], No. 33933/60. Class 61. A tool for removing lids from paint tins comprises a pair of similar levers 1, 2 pivoted to each other at 3 in such manner that the levers do not cross, each lever having its end adjacent the pivot shaped to present a relatively thin broad nose-piece 5 which registers with the complementary end of the other lever when the jaws are closed so as to be engageable in the gap between the rim of the tin and lip of the lid. The end edges of the jaws are concave to a radius approximately equal to the mean radius of the lip of the lid. Each jaw has a groove 6 immediately behind and following the free edge of the nose-piece 5. Each handle la, 2a terminates in a tip 15 having a groove 16 for use in prizing up the lid of a tin provided with a more shallow groove.
Patent GB-1428132-A (GB)
Title: Method of constructing double-skin boxes particularly for lead- acid batteries
IPC: H01M50/143
Filed: 1972-07-20
Abstract: 1428132 Moulding battery cases POST OFFICE 20 July 1973 [20 July 1972] 33996/72 Heading B5A [Also in Division H1] An open-topped container for a large-leadacid battery has walls of sandwich structure, the outer layers consisting of plastics material, e.g. acrylonitrile butyl styrene, in sheet form, and the centre layer comprising a rigid cellular liquid-impervious filling, e.g. polyurethane foam, which is injected between the two outer layers. The side walls and bottom of the container are made by forming inner and outer member 2, 5 of U-section by heating and bending sheets of the plastics material. The upper edges of the member 2 are formed with a shelf 3 and lip 4 and the members 2, 5 are cold-welded together along the lips so as to form a U-shaped cavity therebetween. The end walls each consist of inner and outer plastics sheets 6, 8 having their bottom and side edges bent to form flanges 7, 9. The flanges 7 of the inner sheets 6 are coldwelded to the outer surface of the member 2 and the flanges 9 of the outer sheets 8 are similarly secured to the member 5 so as to form a cavity between the sheets 6, 8. Edge caps 11 of moulded plastics material are cold-welded to the upper ends of the sheets 6, 8 to close the cavity. Angle members 12 of plastics material are cold-welded to the corners of the container and edge caps 14 are similarly secured to the lips 4. Strips 13 of heat and acid-resistant material, e.g. glass-reinforced composite material, are cemented to the shelves 3 to provide supports for lugs of the lead battery plates (Fig. 2, not shown). The foam filling 10 is injected to fill the cavities by making an inlet aperture and providing outlet apertures for surplus filling, filling of the cavities being assisted by exothermic reaction in the foam.
Patent GB-462349-A (GB)
Title: Improvements in the dehydrogenation of saturated hydrocarbons
IPC: C07C5/32
Filed: 1935-12-09
Abstract: <PICT:0462349/IV/1> The conversion of saturated hydrocarbons into unsaturated ones having the same number of carbon atoms and particularly that of paraffins into olefines is effected by heating with a catalyst comprising oxide of divalent chromium optionally admixed with oxide of trivalent chromium.  The catalyst may be mounted on a carrier.  The preferred reaction temperature is about 500 DEG  C.  The reaction products from the converter A may be treated in a separator B for the removal of the olefine, and the unchanged paraffin may be separated from the hydrogen by washing with a solvent in a tower C, and subsequently expelled from solution in a heater Q and recirculated.  A part of the unchanged paraffin may be directly recirculated by pipe K without separation of the hydrogen.ALSO:<PICT:0462349/III/1> The conversion of saturated hydrocarbons into unsaturated ones having the same number of carbon atoms and particularly that of paraffins into olefines is effected by heating with a catalyst comprising oxide of divalent chromium optionally admixed with oxide of trivalent chromium.  The catalyst may be mounted on a carrier.  The preferred reaction temperature is about 500 DEG  C.  The reaction products from the converter A may be treated in a separator B for the removal of the olefine, and the unchanged paraffin may be separated from the hydrogen by washing with a solvent in tower C, and subsequently expelled from solution in a heater Q and recirculated.  A part of the unchanged paraffin may be directly recirculated by pipe K without separation of the hydrogen.
Patent GB-300969-A (GB)
Title: Improved process for soldering aluminium
IPC: B23K35/28
Filed: 1928-11-21
Abstract: 300,969. Odam, P. Nov. 21, 1927, [Convention date]. Soldering.-Aluminium is soldered by means of aluminium-silicon alloys containing 5-12 per cent of silicon worked into wires, rods, or thin plates by hot rolling, drawing, or extrusion.
Patent GB-1471110-A (GB)
Title: Method of closing bottles and bottle which has been closed  using such method
IPC: B29C70/80
Filed: 1974-04-10
Abstract: 1471110 Threaded capsules; seals W R GRACE & CO 10 April 1974 [12 April 1973] 34229/76 Divided out of 1471109 Heading B8T A closure blank having a moulded gasket shaped, before application to a bottle neck, with a substantially flat central panel 4 and an adjoining annular rib 5 spaced from the closure skirt, is secured on an externally threaded bottle neck by pressing the closure axially on to the neck and simultaneously both deforming the part of the closure skirt adjacent the flat end wall of the closure radially inward to reduce the radial dimensions over a limited axial extent starting from the end wall, and deforming a portion of the skirt spaced from the end wall radially inward on to the threads of the bottle neck to cause the skirt to adopt a threaded configuration, the space between the annular rib and the skirt being diminished during the deformation of the closure skirt. The radial extent of the flat central panel 4 from the centre of the closure to the beginning of the rib 5 is 25-45% of the diameter of the closure blank. The gasket is formed by inserting a solid pellet of plasticized polyvinyl chloride into the blank, heating the pellet to a temperature at which the polyvinyl chloride is formable and moulding it with a heated mould surface to the desired configuration.
Patent GB-739227-A (GB)
Title: Screw-tapping apparatus
Inventor: LIEBLEIN HANS
IPC: B23G1/46
Filed: 1953-12-09
Abstract: 739,227. Screwing. PROTOTYP-WERKE GES. Dec. 9, 1953, No. 34303/53. Class 83 (3). A screw-tapping attachment comprises a shank 1 with a sleeve-like extension 2 that embraces a multi-plate friction clutch 3-5 by which it is connected to an extension 6 of a chuck- or tapholder 7, a clutch-adjusting cap nut 18 screwed to and fitting closely over the extension 2, and a closure-ring 10 also screwed over the extension 2, the parts forming an oil-tight unit filled through a'plug-hole 23 in the cap nut. The nut 18 bears on plunger 17, for adjusting the end force applied to the clutch by springs 16, through a pressure ring 15. A helical graduation, corresponding to the pitch on the nut threads and co-operating with an index on the nut, is provided externally on the extension 2 to indicate the amount of adjustment. Mounting and centring chucks.-In order that the tap may feed itself after it has engaged the hole to be tapped, the chuck-shank 28 is slidably mounted in a socket of the holder 7 by a wedge engaging a groove in the shank, and it is connected to a spring-loaded rod 29 by a sliding apertured bolt 32 pressed into a recess 35 on the rod by a leaf-spring 33 on the shank. To remove the chuck, it is pulled out of the socket against the action of the spring 30 until the bolt 32 can be pressed in by the finger to release the rod 29, which then springs back.
Patent GB-472242-A (GB)
Title: An improved method of jointing tubes to tube plates and the like
IPC: F22B37/10
Filed: 1935-12-12
Abstract: 472,242. Jointing tubes to headers &c. BUGATTI, E. Dec. 12, 1935, No. 34487. Void. Convention date, Dec. 17, 1934. [Class 99 (i)] Tubes 3 are jointed to a header &c. 2 by providing the latter with frusto-conical holes 1, expanding the ends of the tubes into these holes, and then forcing thimbles 4 into the expanded ends of the tubes.
Patent GB-807237-A (GB)
Title: Improvements in or relating to thermoplastic materials
Inventor: CLELAND WILLIAM JAMES
IPC: C08J9/18
Filed: 1955-12-02
Abstract: Discrete particles of thermoplastic polymeric materials are impregnated with an organic liquid swelling agent for the polymers and then with hydrocarbons boiling between about - 10 DEG  and + 10 DEG  C. to give heat expandable products.  Alternatively the swelling agent may be incorporated during polymerization.  Specified polymeric materials are polystyrene, copolymers of styrene with other vinyl compounds, e.g. methyl styrene, and polymethacrylates. Specified swelling agents are benzene, toluene, xylene, dioxane, ethyl acetate, amyl acetate, tritolyl phosphate, methylene chloride and carbon tetrachloride.  Specified hydrocarbons are n-butane, isobutane, neopentane, 1-butene, 2-butene, isobutene, butadiene and mixtures sold under the names "Bottogas (Registered Trade Mark)-butane" and "Calor (Registered Trade Mark) gas." They may be added, preferably stepwise, in the liquid state and the impregnation conducted under pressure.  The polymers, e.g. as moulding powders or beads obtained by suspension polymerization, may be agitated in an inert liquid, e.g. water, which may contain dispersing agents, e.g. alkali metal salts of organic sulphuric acids, polyethylene glycol esters and ethers, polyvinyl alcohol and calcium phosphate, and soluble inorganic salts, e.g. sodium chloride, calcium chloride and ammonium sulphate.  The products may be stored, preferably in closed containers, and expanded by heating in a mould.  They may be partially pre-expanded before placing in the mould.ALSO:Discrete particles of thermoplastic polymeric materials are rendered heat expandable by impregnating with an organic liquid swelling agent for the polymers and then with hydrocarbons boiling between about -10 DEG and + 10 DEG C. (see Group IV(a)) and moulded.  Expansion and moulding may be effected by direct heating in a closed mould, the quantity of particles being sufficient to fill the mould after expansion has taken place.  The particles may be partially pre-expanded by heating in a liquid bath, e.g. a water bath, at a temperature near the softening point of the polymer without substantially agglomerating the particles, and the pre-expanded particles finally expanded and moulded in a steam heated mould provided with perforations.  Specified polymers are polystyrene, copolymers of stryene with other vinyl compounds, e.g. methyl stryene, and polymethacrylates; specified swelling agents are benzene, toluene, xylene, dioxane, ethyl acetate, amyl acetate, tritolyl phosphate, methylene chloride and carbon tetrachloride; and specified hydrocarbons are n-butane, isobutane, neopentane, 1-butene, 2-butene, isobutene, butadiene and mixtures sold under the names "Bottogas (Registered Trade Mark) butane" and "Calor (Registered Trade Mark) gas".
Patent GB-175231-A (GB)
Title: Improvements in apparatus for filing cards
IPC: B42F17/28
Filed: 1920-11-04
Abstract: 175,231. Wood, D. T. B., and Kenrick & Jefferson, Ltd. Nov. 4, 1920. Boxes and cabinets; revolving files; expanding rod files.-Apparatus for filing cards having a slot in the lower edge for engagement with wires or equivalent members comprises a container provided with a fixed cardretaining member, and having a longitudinally sliding floor carrying a second card - retaining member movable with the floor in relation to the first member. The invention is shown applied to a rotary file with the containers detachably secured in the wheel frame. As shown in Fig. 3, the floor of each container has a fixed part f<3> and a movable part f<4>, the retaining wire i being fixed either to the end walls of the container or to the fixed part of the floor, the other retaining-wire k being carried by the movable part of the floor. A projection f<5> is provided to push the movable part in against the action of a spring h, Fig. 5, the cards being then filed upon the wires which expand on releasing the projection f<5>. The whole floor may slide, in which case the fixed retaining-wire is mounted in the ends of the container. The floor parts may be of sheet metal with upstanding-flanges to replace the retaining-wires, as shown in Fig. 9. The containers may be integral with the wheel frame, their sides being formed by discs, and their end walls by radially-arranged partitions.