baber/WOPTO huggingface dataset:
Patent GB-1506046-A (GB)
Title: Reverse conduction thyristors
IPC: H01L29/00
Filed: 1975-05-22
Abstract: 1506046 Semiconductor devices SOC GENERALE DE CONSTRUCTIONS ELECTRIQUES ET MECANIQUES ALSTHOM 22 May 1975 [4 June 1974] 22393/75 Heading H1K A reverse-conduction thyristor comprises a semiconductor wafer divided into a thyristor zone and a diode zone, each zone extending through the entire thickness of the wafer, the thyristor zone including a P+(N+) injection layer 14, Fig. 7, an N-(P-) blocking layer 26, a P + (N +) control layer 28, and an N + (P +) emitter layer 22, and the diode zone including an N+(P+) contact layer 24, a blocking layer 32 which is an extension of the thyristor blocking layer 26, and an injection layer 34 which is an extension of the thyristor control layer 28, a first main electrode 42, Fig. 8, contacting the thyristor injection layer 14 and the diode contact layer 24, a second main electrode 44 in contact with the thyristor emitter layer 22 and the diode injection layer 34, and a control electrode 46 contacting the thyristor control layer 28 and remote from the diode injection layer 34, wherein an extra diode layer 30 of the P(N) type is provided between the diode contacting and blocking layers 24, 32, the thickness of the diode contacting layer 24 and the extra layer 30 together being substantially equal to that of the thyristor injection layer 14, and the dopant concentration at a given distance from the surface is lower in the extra layer 30 than in the thyristor injection layer 14. The wafer may be Si, the electrodes 42, 44, 46 may be evaporated Al and the wafer may be supported between W electrodes 48, 50 and may be bevelled and covered with silicone resin 52. The diode and the thyristor zones are isolated by a common annular region 36, 38, 40.
Patent GB-1060933-A (GB)
Title: Polymers containing imino carbonic ester groups
IPC: C08G64/00
Filed: 1965-05-26
Abstract: Polymers containing recurring imino carbonic ester groups are prepared by reacting a polyfunctional organic cyanic ester of formula Ar(OCN)x in which Ar is any aromatic, araliphatic or heterocyclic radical which may be substituted and x us an integer of at least 2 with a di- or trihydroxy compound to form a resin having a plurality of recurring units <FORM:1060933/C3/1> in which R is an organic residue after removal of the -OH groups from the di- or trihydroxy compound.  The reaction between the organic cyanic acid ester and hydroxy compound may be effected in solution in an organic solvent. Many suitable cyanic acid esters and hydroxyl compounds are specified.  In Examples, the following were reacted: (1) 1,3-dicyanatobenzol with resorcinol, (2) 1,4-dicyanatobenzol with hydroquinone, (3) to (5) 4,41-dicyanato diphenyl dimethyl methane with (3) 4,41-dihydroxy diphenyl dimethyl methane, (4) 1,4-di-(b -hydroxyethyl) benzol, and (5) 1,6-hexane diol, (6) polyethylene adipate with 1,4-dicyanatobenzol and (7) to (11) 4,41-dicyanato diphenyl dimethyl methane with (7) polyethylene adipate, (8) as in (7) but with 1,4-dicyanatobenzene in addition, (9) linear polypropylene glycol, (10) propoxylated trimethylol propane and (11) 2,2-bis-(4-hydroxyphenyl) propane.
Patent GB-1026683-A (GB)
Title: Improvements relating to the bonding of thermoplastic materials
Inventor: OSBORNE ALAN PAUL
IPC: C08J5/12
Filed: 1962-06-12
Abstract: A coating of paint, lacquer or varnish solvent-free liquid polymer, or a solution or dispersion e.g. an aqueous dispersion of an elastomeric polymer is bonded to the surface of a normally solid thermoplastic synthetic material by treating the surface with a liquid which is capable of dissolving the material at elevated temperatures only, the liquid being at a temperature at which it is a solvent for the material but which is below the melting point of the material, and the time of treatment being such that when subsequently freed substantially from the solvent the surface has a matt white appearance, cooling the material to a temperature at which the liquid is no longer a solvent therefor, substantially freeing the surface of solvent, and applying the liquid paint, lacquer or varnish solvent-free liquid polymer or a solution or dispersion e.g. an aqueous dispersion, of an elastomeric polymer to the treated surface. The thermoplastic synthetic material may be crystallisable and may take the form of a sheet of fibres woven into a fabric.  The thermoplastic synthetic material may be a polyolefin e.g. isotactic polybutylene, copolymers of ethylene and propylene, isotactic polypropylene which is subjected to the action of normally liquid hydrocarbon at a temperature above 125 DEG C., polyethylene of the high density type which is subjected to the action of a normally liquid hydrocarbon at a temperature of at least 90 DEG C.; chlorinated polyolefins, polyethers obtained by polymerizing halogenated pentaerythritol, a chlorinated pentaerythritol polymer or a polycarbonate which is subjected to the action of an aliphatic ketone at a temperature of at least 90 DEG C.; or a vinyl chloride polymer which is subjected to the action of a chlorinated aromatic hydrocarbon at a temperature of at least 90 DEG C.  The varnish may be of the glyptal, long oil alkyd or phenolic oil type.  The lacquer may comprise a cellulose derivative, a polyurethane or a chlorinated rubber.  The emulsion paint may comprise polyvinyl acetate in aqueous dispersion.  The varnish, lacquer or emulsion paint may contain a pigment of the desired colour.
Patent GB-366048-A (GB)
Title: Improvements in and relating to electric discharge devices
IPC: H01J3/02
Filed: 1930-07-25
Abstract: 366,048. Discharge apparatus. INTERNATIONAL GENERAL ELECTRIC CO., Inc., 120, Broadway, New York, U.S.A. -(Assignees of Allgemeine Elektricitõts- Ges. ; 2, Friedrich Karl-Ufer, Berlin.) July 25, 1930, No. 22490. Convention date, July 26, 1929. Void [Published under Sect. 91 of the Acts]. [Class 39 (i).] In arc discharge devices with a thermionic cathode K, an operating anode SA is separated by a grid SG from the arc discharge between the cathode K and a discharge -maintaining anode A. A sheath of positive ions forms on the grid and may close its perforations at one grid voltage. The thickness of the sheath controls the space current to the anode SA, this current being an amplified re-production of the control voltages on the grid. The device may be transformer coupled (as shown) to a control E and to a loud-speaker L or further amplifier. One or more operating anodes SA may be used. The anode SA may be coaxial with or surround the arc discharge. Nozzles G projecting from the wall of the device into the space between the grid SG and the anode SA ensure that all current to the anode SA passes through the grid. The device may be filled with rare gas or with a vapour at a pressure of from 2 to À01 mm. ; an excess of mercury may be provided with or without rare gas. The pressure is sufficient to avoid destruction of the cathode K by positive-ion bombardment but insufficient to produce impact ionization between the grid and the anode SA.
Patent GB-410460-A (GB)
Title: Improvements in and relating to cigarette paper book
IPC: A24F17/00
Filed: 1932-08-12
Abstract: 410,460. Book covers. STRAUS, H. H., 345, West 40th Street, New York, U.S.A. Aug. 12, 1932, No. 22628. Void [Abridged as open to inspection under Sect. 91 of the Acts, Oct. 30, 1933]. [Classes 16 and 146 (i).] A resilient closure device for the cover of a book, such as a cigarettepaper book wherein the stack of papers is secured along one edge to the back of the cover, comprises an elastic band 11 situated in incisions or notches 10 provided in the sides 8 of the cover adjacent the back 6. The notches are preferably inclined towards the back 6. The sides 8 may be integral with the back 6, or hingedly attached thereto by flexible strips. In a modification the elastic band is received in holes in the sides of the cover, slits leading from the holes to the ends of the sides of the cover to enable the band to be placed in position.
Patent GB-1450519-A (GB)
Title: Process for binding biologically active proteins
IPC: C08F8/00
Filed: 1975-05-23
Abstract: 1450519 Supported proteins BOEHRINGER MANNHEIM GmbH 23 May 1975 [4 June 1974] 22659/75 Headings C3H and C3G At least one biologically active protein and/or enzyme is reacted with an insoluble carrier based on a polysaccharide graft co-polymer with a hydrophilic graft comonomer. Preferably the graft copolymerization of the hydrophilic monomer on to the polysaccharide is effected in the presence of protein with simultaneous binding thereof. Examples of polysaccharides mentioned are starch, cellulose, a cellulose derivative and a polyglucoside. Difunctional polysaccharide activators specified are allyl halides, acrylic or methacrylic derivatives, e.g. chlorides, anhydrides and azides, chloromaleic acid and maleic acid hemiesters. Examples of co-monomers which can be used for grafting include acrylamide, acrylonitrile, vinyl acylates, e.g. vinyl acetate, propionate and phosphate, acrylates, methacrylates, N<SP>1</SP>-vinyl lactams, e.g. N-vinyl pyrrolidone and N-substituted acrylamides and methacrylamides. Cross-linking agents can also be included e.g. diacrylates, dimethacrylates, diacylamides such as N,N<SP>1</SP>-methylene-bis-acrylamide. Examples, describe the binding on of D-hydroxynitride lyase, trypsin, yeast hexokinase and acylase. Example 3 describes the copolymerization of acrylamide and starch allyl ether with the simultaneous binding of acylase in the presence of ammonium peroxide disulphate and 3-dimethylaminopropionitrile. Example 4 differs only by the inclusion of acrylyl chloride to ensure covalent attachment of the enzyme.
Patent GB-320705-A (GB)
Title: Improvements in and relating to means for controlling apparatus at a distance
IPC: G05D3/14
Filed: 1928-08-04
Abstract: 320,705. Joel, H. F. Aug. 4, 1928. Selective distant control systems.-The invention relates to a control system of the type having resistances at the transmitter and receiver connected in parallel with a source of energy with a manually operated contactor at the, transmitter connected to a contactor at the receiver through a relay which operates by the out-ofbalance current and controls the apparatus and the movement of the contactor at the receiver, and consists in the provision of electromagnetic clutch devices operated by the relay and associated with two sources of rotary motion in opposite directions. The Figure shows resistances a, y and a motor g producing opposite rotation in bevel wheels j, k. A polarized relay t operates through relay devices u, v, magnetic clutches m, n, so that the shaft l is driven until the out of balance current is nullified by movement of the contactor z on the resistance y. The relays may be replaced by or associated with thermionic valves.
Patent GB-391108-A (GB)
Title: Absorption refrigerating apparatus
IPC: C09K5/04
Filed: 1931-08-11
Abstract: 391,108. Refrigerating. S€RNMARK, A. U., 1, Skeppsbroplatsen, Goteborg, Stockholm. Aug. 11, 1931, No. 22711. Convention date, Aug. 22, 1930. [Class 29.] Absorption systems.-The refrigerant used in continuous cycle or reversing systems comprises a mixture of two or more substances of such nature that the vapour pressure of the mixture is greater than the sum of the partial vapour pressures of the single substances corresponding with the molecular concentrations of the separate substances in the mixture, i.e., that the substances react on one another ; the absorption medium consists of or contains an organic substance. Preferably the refrigerant is associated with an absorption medium of such nature that the vapour pressure of the refrigerant above the mixture of refrigerant and absorbent is equal to or less than that corresponding with the concentration of the refrigerant in the absorbent, as set forth in Specification 389,124. Carbon bisulphide, ethyl ether, methyl formate, ethyl bromide, methylene chloride and methyl ether, are particularly suitable as refrigerants, and dichlorhydrine, nitro benzene, nitro toluol, benzyl aniline, diethyl toluidene, triphenyl phosphate and silicate, tricresyl phosphate and tetracresyl silicate are particularly suitable as absorbents. A pressure equalizing gas such as hydrogen, methane or helium may be used. Many other refrigerants and absorbents are mentioned. The Specification as open to inspection under Sect. 91 comprises also the following: The refrigerants and absorbents may be selected from aldehydes, ketones, alcohols, hydrocarbons and derivatives thereof. The apparatus may be air cooled and the evaporator and absorber may consist of deeply-fluted cylindrical vessels or corrugated hollow plate elements. The materal of the generator and other vessels is not greater than 4 mm. and that of the conduits not greater than 3 mm. thickness, and may be copper, zinc, tin, &c., or " celluloid," glass, &c. Argon, xenon, crypton, and neon are mentioned as suitable inert gases. The cooled parts of the apparatus may be disposed in draught flues. This subject-matter does not appear in the Specification as accepted.
Patent GB-428515-A (GB)
Title: Improvements in or relating to apparatus for treating light-sensitive surfaces
IPC: G03D13/06
Filed: 1933-11-03
Abstract: 428,515. Developing - apparatus. BILLING, N. P., 6, Lower Regent Street, London. Nov. 3, 1933, No. 22731/34. Divided out of 428,455. [Class 98 (ii)] Apparatus for treating a light-sensitive surface comprises a chamber having an aperture in one wall, e.g. an open end, a cover to hold the light-sensitive surface pressed against the aperture in a light-tight manner, an orifice separate from the aperture and independent of the cover for the admission of treating liquid and a closure cap and /or a baffle to prevent light passing through the orifice. The cover may be provided with means, such as a screw-threaded connection between the cover and the chamber walls, to apply an adjustable pressure to the light-sensitive surface. In the form shown, the apparatus consists of a hollow block 20 having a square aperture at the base and a circular aperture at the top, a cover 10 into which the block 20 is inserted, a cap 16, screwed into the cover 10 and having a mushroom shaped baffle 18 and orifices 17 for the admission of treating liquid, and a container 25 for the treating liquid screwed on to the cap 16. The light-sensitive surface 26 is held between the cover 10 and the block 20. The container 25 may be of glass or opaque material and when detached from the apparatus may have a cap provided with a thermometer. Specification 423,036 is referred to.
Patent GB-606196-A (GB)
Title: Improvements in and relating to biotin and processes of preparing the same
IPC: C07D495/04
Filed: 1945-09-04
Abstract: Biotin, represented by the formula <FORM:0606196/IV(b)/1> is obtained by treating 2-(41-carboxybutyl)-3 : 4-diamino-tetrahydrothiophene as an addition salt thereof with phosgene preferably at a temperature of about 0 DEG  C. and in an aqueous alkaline solution, e.g. a solution of an alkalimetal base or an alkali metal salt of a weak acid. Compounds of the above formula are obtained as racemates of stereoisomers by using the corresponding racemic mixture as starting material.  In examples, cis-, trans-allo- and trans - epiallo - 2 - (41 - carboxy - butyl) - 3 : 4 - diamino-tetrahydrothiophene acid sulphates are converted into biotin.  Specifications 606,188, 606,189, 606,190, 606,191, 606,192, 606,193, 606,194 and 606,195 are referred to.
Patent GB-531930-A (GB)
Title: Improvements in or relating to fluid tight seals for rotary joints, shafts and the like
IPC: F16J15/34
Filed: 1939-08-08
Abstract: 531,930. Pipe joints. GOFF, L. D. Aug. 8, 1939, No. 22860. [Class 99 (i)] [Also in Group XXVI] In a self-aligning bearing or joint which has capacity for both angular and lateral adjustment, the rotary pipe 12 has a head 14, which is formed with a spherical bearing-surface, and projects into a chamber 34 formed in the fixed member 10. To the end of the member 10 is attached a wall 22 having an aperture of larger diameter than the pipe 12, through which the pipe projects. Between the head 14 and the wall 22 is inserted a sealing-ring 18 of graphite, bronze &c. one face of which bears against the spherical surface on the head, and the other against the wall. Angular movement of the pipe 12 is thus permitted by the spherical bearing-surfaces, and, as the ring 18 is of smaller diameter than the bearing-surface on the wall, lateral movement is also possible. Pressure in the chamber 34 forces the head 14 against the sealing-ring and the ring against the wall, and this is aided by a spring 42 interposed between a collar 38 on the pipe and a sliding thrustcollar 46 keyed on the pipe. The collar 46 has a spherical inner surface, which co-operates with a ring 52 bearing against the wall 22. In a modification, a ball-bearing is interposed between the thrust-collar 46 and the wall.
Patent GB-869079-A (GB)
Title: Improvements in the production of n-substituted polyamides
IPC: C08G69/14
Filed: 1959-07-03
Abstract: Polyamides are made by heating a lactam of an omega-aminocarboxylic acid with 8 to 13 ring members and which is substituted on nitrogen by an alkyl group or an alkenyl group containing only one ethylenic double bond, the total number of carbon atoms in said substituent being from one to six at 200 DEG C. to 300 DEG C. in the presence of 0,1%-5% by weight, based on the monomer, of a neutral or acid polymerization catalyst.  Specified lactams are N-methyl-oenanthic lactam, N-ethyl-oenanthic lactam, N-methylcaprylic lactam, N-ethyl caprylic lactam, N-methyl lauric lactam and said lactams substituted on the nitrogen atom by propyl, butyl, isobutyl, isoamyl, hexyl, vinyl, allyl, crotryl or methallyl groups.  Specified catalysts are phosphoric acid, sulphuric acid, hydrobromic acid, hexamethylene diammonium adipate, octamethylene diammonnium sebacate, o -aminocaproic acid and water.  The examples describe the preparation of polyamides from: (1), (7) and (8) N-methyl caprylic lactam; (2) and (3) N-ethyl-caprylic lactam; (4) and (5) N-ethyl-oenanthic lactam; (9) N-butyl-caprylic lactam and (10) n-butyl-oenanthic lactam; exemplified catalysts being phosphoric acid, pyrophosphoric acid, hexamethylene diammonium adipate and water.
Patent GB-1441271-A (GB)
Title: Safety cover for a domestic electric socket
IPC: H01R13/447
Filed: 1973-05-15
Abstract: 1441271 Socket safety cover GP HILL 20 May 1974 [15 May 1973] 23016/73 Heading H2E A safety cover for a domestic socket outlet comprises a dummy plug, with facsimile "contact" pins of insulating material for insertion into the socket outlet, the plug body, also of insulating material, having recesses simulating socket recesses into which a real plug may not be fitted for a child's play purposes.
Patent GB-1151564-A (GB)
Title: Improvements in or relating to Electrically Powered Vehicles
Inventor: SARGEANT ARCHIBALD
IPC: A63H30/04
Filed: 1965-05-24
Abstract: 1,151,564. Electric vehicles. ROSEMOUNT ENG. CO. Ltd. 24 May, 1966 [24 May, 1965], No. 23213/66. Divided out of 1,151,563. Heading A6S [Also in Divisions B7] An electric vehicle in which a variable voltage is supplied to an input circuit in the vehicle through fixed conductors engaged by contact elements on the vehicle has a driving motor energised by power from said input circuit and also steering means operatively responsive to variations in the voltage applied to said input circuit. In the embodiment shown in Fig. 1, current is picked up from the track by brushes 31 and operates shunt-wound D.C. motor 13. Movable armature 15 is associated with the field coil of motor 13 and moves steering mechanism 17 against the bias of spring 16, the steering thus be controlled by the voltage applied. During interruptions of the current, brake 19 engages disc 22 to lock the steering. Two such vehicles having respectively the diode arrangements of Figs. 4a, 4b between brushes 31 and motor terminals 35 may be separately operated on the track disclosed in Specification 1,151,563. In the embodiment shown in Fig. 5 rear wheels 74, 75 are driven by motors 76, 77 connected in parallel, one of which has its speed dependent on applied voltage, the other being insensitive to variations in the applied voltage. The invention is applicable to toy vehicles and to unmanned vehicles in factories &c. The vehicles may pick up current from an overhead conductor system instead of track.
Patent GB-392893-A (GB)
Title: Bobbin for cap spinning machines
IPC: B65H75/18
Filed: 1931-08-18
Abstract: 392,893. Bobbins &c. KAMMGARN AKT.-GES., 14, Schanzen-Gasse, Zurich, Switzerland. Aug. 18, 1931, 'No. 23277. Convention date, Aug. 18, 1930. Void [Published under Sect. 91 of the Acts]. Drawings to Specification. [Class 120 (iii).] A bobbin for cap spinning-machines is made in one piece from artificial resin, preferably by casting or moulding.
Patent GB-627826-A (GB)
Title: Improved plastic refractory
IPC: C04B35/66
Filed: 1944-11-23
Abstract: A refractory material capable of air setting at room temperatures to form a composition having high strength which is maintained up to firing temperature comprises a refractory clay such as Kaolin calcined kyanite, or ball clay, a refractory filler such as ceramic grog, and a water-soluble, colloidal aluminium phosphate, ranging from mono to di-aluminium phosphate, serving as a binder.  The aluminium phosphates used may be prepared as described in Specification 597,169, [Group III], and have an Al:PO4 ratio of 1-2 : 6.  The material may contain 15-25 per cent high-grade refractory clay and 2 1/2 -10 per cent binder on a dry basis.  With phosphates of high alumina content, aluminium or ammonium chloride, sulphate, or nitrate may be added to reduce the effect of hydrolysis and to increase the rate of solution; phosphoric acid solutions of proteins, carbohydrates, polyethylene amines, and like compounds may also be added.  The compositions may be formed in wet or dry form, and, in the atter case, the grog particles may be coated with the phosphate binder. Approximately 0.25 per cent of a wetting agent such as a sodium alkyl naphthalene sulphonate may be incorporated.  The material may be used as a ramming-mixture for patching, as a lining, or for forming crucibles saggers and small furnaces.  Specification 462,781, and U.S. Specification 1,949,038 also are referred to.
Patent GB-259552-A (GB)
Title: Improvements in or relating to insulated electrical conductors
IPC: H01B7/16
Filed: 1926-09-22
Abstract: 259,552. Backer, C. B. Oct. 9, 1925, [Convention date]. Insulating coverings for conductors.-Insulated conductors are made by assembling loosely within a metallic tube a central conducting rod or wire of ductile metal, and metallic magnesium, which may be in the form of tubes of magnesium ribbon surrounding the central conductor, and then passing steam under high pressure through the outer metallic tube to convert the magnesium into magnesium hydroxide. The composite body so formed is then annealed and worked to the required dimensions by swaging, rolling, drawing, &c. Specification 173,742 is referred to.