baber/WOPTO huggingface dataset:
Patent GB-692453-A (GB)
Title: Improvements in or relating to the manufacture of organic dinitriles
Filed: 1951-03-28
Abstract: Alpha-methylene delta-methyl adiponitrile and small amounts of dimethyl dicyano cyclobutanes are formed by heating methacrylonitrile free from a polymerization initiator at a temperature within the range of 300 DEG  to 400 DEG  C. for a period of time not substantially exceeding 15 minutes and under a pressure sufficient to maintain a liquid phase.  The process may be carried out in the presence of an inert diluent or solvent, e.g. water, benzene, toluene, xylene, cyclohexane, octane, ethyl or butyl acetate or dioxane.  Polymerization inhibitors such as hydroquinone, copper resinate, naphthyl amines or beta-naphthol may be present; in their absence, oxygen should be excluded from the reaction system. Examples are given of the process carried out batchwise in a pressure reactor under autogenous pressure and continuously by passing methacrylonitrile and water under 200 or 600 atmospheres pressure through a heated stainless steel tube. The adiponitrile derivative may be hydrogenated to the saturated diamine which may be used as a starting material for the production of polyamides.
Patent GB-582946-A (GB)
Title: A connection for altering an electric current in facultative dependence on two or more different currents
IPC: H02P7/30
Filed: 1944-04-19
Abstract: 582,946. Control of A.C. motors. ALLMANNA SVENSKA ELEKTRISKA AKTIEBOLAGET, April 19, 1944, No. 7211. Convention date, April 30, 1943. [Class 38 (iii)] [Also in Group XXXV] A sudden current change, e.g., for actuating a contactor, in dependence on two or more control currents is effected by two or more transductors individually influenced by the control currents and connected in concatenation, series or parallel, or feeding series or parallel connected rectifiers. As shown in Fig. 1, transductors 10, 20 control a relay 3 for cutting out a section 2 of the starting resistance of a motor 1. Transductor 20 has a D.C. winding 22 carrying the motor current, or a current proportional thereto, which winding opposes D.C. windings 21, 23, 24. The diminishing current through winding 22 as the motor current falls causes saturation of the transductor core; the A.C. winding in consequence suddenly passes a heavy current which, after rectification at 25 actuates the relay and short circuits 2. If the motor current does not fall within a time determined by a resistancecapacity circuit 6, 7 shunting a D.C. winding 12 on transductor 10 saturation of the core of 20 is brought about at the end of this period to cut out 2 by transductor 10 saturating, the heavy A.C. then passed by the latter being rectified at 14 and fed to winding 23 of transductor 20. Two groups of transductors may be employed alternatively for the odd and even steps of resistance, respectively. In the arrangement of Fig. 2 an induction motor 30 is controlled by tap-changing on a transformer 33 by a relay 32, the relay actuating only when the load current and speed of the motor are both correct. For this purpose transductors 40, 50 are connected in series and have control windings 42, 52 fed respectively by direct current proportional to the motor current (through rectifier 34) and motor speed (by a tachometer generator 31). The reactances of the A.C. windings of the transductors are low together only when both the speed and current of the motor are correct and the heavy A.C. then passed operates the relay over rectifier 54. The control may be made responsive to acceleration instead of speed by inserting a condenser in the output leads of the tachometer generator. Specification 557,829, [Group XXXV], is referred to.
Patent GB-564349-A (GB)
Title: Improvements in or relating to electric blasting devices
IPC: F42B3/103
Filed: 1942-05-28
Abstract: 564,349. Blasting cartridges. HERCULES POWDER CO. May 28, 1942, No. 7249. Convention date, Jan. 30, 1942. [Class 9 (i)] An electric blasting cap or detonator has the lead-in wires associated with a plug of hard electrically insulating material such as a thermoplastic or thermosetting resin and of larger diameter than the end of the casing, into which it is forced to secure water-tightness. As shown in Fig. 3, the leading-in wires 14 of a blasting cap are moulded into a plug 15 of thermosetting resin and the lower end of the plug may be tapered at 17. The diameter of the plug is about .003" to .04" greater than the internal diameter of the bronze shell 12 containing the explosive 22, and the plug is forced therein by the use of an arbor press. In a modification, Fig. 4, the plug 30 holding the wires is provided with a reduced portion 31 which engages a sleeve 33 enclosing the detonating explosive and the firing filament 16, the end of the tube being enlarged to receive the plug. The ignition assembly may be used with a cavity plug and may be of bead or match-head type, but the plug must be forded into the tube end to ensure water-tightness. Examples of resins from which the plug can be moulded are given in the Specification.
Patent GB-1370192-A (GB)
Title: Temperature control means for moulds
IPC: F16K3/26
Filed: 1973-03-05
Abstract: 1370192 Valves BRITISH GLASS INDUSTRY RESEARCH ASSOCIATION 5 March 1973 [17 Feb 1972] 7292/72 Heading F4V [Also in Division F2] Means for cooling moulds for producing glass articles, comprises cooling air control assemblies, e.g. two, four or six assemblies; each comprising a pair of telescoped cylinders 3, 4, Fig. 1, each having a set of outlet apertures 12 therein. A bolt 8 is secured to the top end of the inner cylinder 3 and extends freely through an opening in top end'of outer cylinder 4. The inner cylinder can be held stationary by the bolt whilst the outer cylinder is rotated, or the inner cylinder can be rotated by the bolt into positions in which a spring-loaded ball (not shown) engages one of a series of indentations (14), Fig. 4 (not shown), in the base 1. Moreover, the outer cylinder can be moved longitudinally relatively to the inner cylinder by adjustment of a nut 13, a coil spring (11) being compressed ;between the top ends of the cylinders to hold the top end of the outer cylinder against the nut. Thus by appropriate relative angular and longitudinal adjustment of the cylinders the degree of overlap of the apertures and the direction of discharge can be regulated to provide effective differential cooling of an associated mould. The inner cylinder may have two sets of apertures therein. A valve may be provided in the base to override the control by the cylinders. Means sensing the temperature of the mould at various locations may be used to automatically control the relative disposition of the cylinders.
Patent GB-1431002-A (GB)
Title: Monoazo compounds, processes for their manufacture and their use  as dyestuffs
IPC: C09B62/51
Filed: 1974-02-18
Abstract: 1431002 Reactive monoazo dyes HOECHST AG 18 Feb 1974 [19 Feb 1973] 7325/74 Heading C4P  Novel dyes of formula (where A is H, methoxy, or ethoxy; B is H, or SO 3 H; and X is a group -CH 2 CH 2 Cl or -CH=CH 2 ) and alkali metal and alkaline earth metal salts thereof are prepared by coupling the corresponding diazotized aminodiphenylamines with the appropriate acylaminonaphthol sulphonic acids and where required dehydrohalogenating the compounds in which X is -CH 2 CH 2 Cl. Alternatively the corresponding aminonaphthol dyes are reacted with a carboxylic acid chloride of formula followed by conversion of the compounds where X is -CH 2 CH 2 Cl if required, as above. The dyes provide blue colorations on leather, skin, natural and synthetic nitrogen containing fibrous materials, or natural or regenerated cellulosic fibrous materials or a synthetic polyhydroxy high molecular weight substrate. Reference has been directed by the Comptroller to Specification 1,144,966.
Patent GB-1032811-A (GB)
Title: Improvements in or relating to amplifying circuit arrangements
Inventor: BLACKMAN PETER FRANCIS
IPC: H03F3/28
Filed: 1963-02-25
Abstract: 1,032,811. Valve amplifying circuits. FEEDBACK Ltd. Feb. 24, 1964 [Feb. 25, 1963], No. 7438/63. Heading H3W. A push-pull cathode follower circuit comprises a pair of valves 2, 2<SP>1</SP> driven in push-pull and acting as cathode followers, the cathode circuit of each valve comprising the anode to cathode path of one of a further pair of valves 13, 13<SP>1</SP>, respectively. The valves 13, 13<SP>1</SP>, which may have individual cathode resistors 20, 20<SP>1</SP>, have a common cathode resistor 19 and the grid of each is connected to a tapping point on the one of a pair of potentiometers 21, 221 and 21<SP>1</SP>, 22, respectively, which is connected between the anode of the other valve and the remote end of the common cathode resistor 19. The output is taken in push-pull from the cathodes of the valves 2, 2<SP>1</SP>.
Patent GB-616985-A (GB)
Title: Process for the treatment of vanadium bearing ores
IPC: C22B34/22
Filed: 1946-03-11
Abstract: Vanadium ores are roasted in the presence of an alkali metal compound, preferably soda, and a carbonaceous compound, e.g. charcoal or coke breeze, with an initially limited, and thereafter increased air supply, whereby a reduction of metal compounds other than vanadium compounds is first effected, and then the vanadium compounds are oxidized, to form alkali metal vanadates.  Reference is made to a soda content of 5-20 per cent, a carbonaceous material content of 10-20 per cent, a roasting time of 2 1/2 hours and temperature of 850 DEG  C.  The residue obtained after lixiviation of the alkali metal vanadate may be used for the extraction of metallic iron.
Patent GB-434923-A (GB)
Title: Improvements in rotary classifiers for pulverizers and the like
IPC: B02C15/12
Filed: 1935-03-09
Abstract: 434,923. Ball-and-ring mills; centrifugal separators. BABCOCK & WILCOX, Ltd., Babcock House, Farringdon Street, London.-(Assignees of Hardgrove, R. M. ; 719, Highland Avenue, Westfield, New Jersey, U.S.A.) March 9, 1935, No. 7463. Convention date, Dec. 20, 1934. [Classes 23 and 59] A rotary classifier disposed in a casing adjacent an outlet conduit comprises a conical plate mounted on a vertical driving shaft and extending below the outlet, and a series of arcuately spaced blades mounted on the upper side of the plate and having passageways therebetween communicating with the outlet. As shown applied to a ball-and-ring mill, the balls 15 are rotated by an intermediate ring 13 driven by the shaft 16 and are loaded by springs 19. Hot air &c. enters at 24 and passes inside of the lower row and outside of the upper row of balls to outlets 30 in the top of the casing. The outlets are controlled by valves 31 to regulate the velocity of air and material through the rotary classifier driven by a shaft 40 from the main drive shaft 16. The classifier comprises a conical base 33, arcuate blades 36 and a top ring 34 forming an air seal 34a with a stationary ring 35 on the casing. The coarse material entering inwardly through the blades 36 are thrown off by centrifugal force and descend with the feed from the shoot 27 for regrinding.
Patent GB-110515-A (GB)
Title: Improvements in Steam Superheaters for Marine Boilers.
Inventor: SUGDEN THOMAS
IPC: F22G7/10
Filed: 1917-05-24
Abstract: 110,515. Sugden, T. May 24, 1917. Sinuous - t u b e superheaters. - A superheater in the smoke-box of a marine boiler has headers A, B arranged transversely of the boiler in a casing D supported in front of the uptake, and vertical tube-coils C. The tubes may be connected to the headers in the manner described in Specification 108,074. The bends of a coil are bound together by metal bands H hammered or pressed closely to the sides of the coil. The coils are suspended opposite the spaces between the ends of the boiler tubes.
Patent GB-852248-A (GB)
Title: Improvements in and relating to polytetrafluoroethylene adhesive tape and to a process of manufacture thereof
IPC: C08J7/043
Filed: 1957-03-06
Abstract: 852,248. Electrical insulating adhesive tapes. DU PONT DE NEMOURS & CO., E. I. March 6, 1957 [March 8, 1956], No. 7490/57. Drawings to Specification. Class 140. An electrical insulating adhesive tape is produced by reacting one or both surfaces of a polytetra fluoroethylene tape with a solution of an alkali or alkaline earth metal in an inert non-metallic solvent, e.g. anhydrous ammonia, freeing said surface or surfaces from elemental carbon by treatment with an oxidizing agent, and thereafter applying to said surface or surfaces a layer of cross-linkable resin. The crosslinkable resin may be a silicone rubber, a thermosetting epoxy resin or a thermosetting polyester resin. The tape which may take the form of a sheet, fabric or felted fibres of polytetrafluoroethylene, may be reinforced by glass fibres or fabrics, e.g. the substrate taking the form of a polytetrafluoro ethylene coated glass fabric.
Patent GB-588097-A (GB)
Title: Improvements in or relating to internal combustion turbine power plants
IPC: F02C6/00
Filed: 1944-04-22
Abstract: 588,097. Gas turbine plant. POWER JETS (RESEARCH & DEVELOPMENT), Ltd., and CONSTANT, H. April 22, 1944, No. 7526. [Class 110 (iii)] A gas turbine plant for the jet-propulsion of aircraft comprises H.P. and L.P. turbines 31, 19 respectively, driving H.P. and L.P. compressors 32, 20, the turbines being arranged next to one another and between the air compressors. A reheating combustion chamber 45 is placed between the turbines. The L.P. turbine also drives, through a reduction gear 56, a ducted fan 53 which delivers part of its air to the L.P. compressor and part to a duct 15 leading to an augment or jet. An intercooler 60 is placed in the duct 15 and the turbine exhaust duct 47 leads to a separate propulsion jet. In a modification, there is no intercooler, the turbines discharge into the single duct 15 and the air in the duct is heated by an oil burner.
Patent GB-768593-A (GB)
Title: A method and means for passing tube blanks through step rolling mills
IPC: A21B1/00
Filed: 1955-03-15
Abstract: 768,593. Rolling tubes. AKTIEBOLAGET 8VENSKA METALLVERKEN. Marc 1955 [March 16, 1954], No. 7560/55. Class 83 (4). In a step-by-step tube rolling apparatus with reciprocating and oscillating rolls, 1, 2, Figs. 1, 4, the blanks are intermittently fed by a hammering operation. The blanks 58 to be rolled are supported on mandrels 45 projecting from a carriage E which is slidable into position along guides 31 under the action of double acting hydraulic cylinders 33. The carriage E has a framework 37 mounted on its forward end which runs on a supporting wheel 39 and has a number of guides 47 which support the mandrel but which have holes large enough for the passage of the tube blanks. For hammering the blanks a hammer member 50 is reciprocated in the frame 37 and has annular sections 54, Fig. 8, attached thereto which slide over the mandrels 45 and engage the ends of the blanks. The hammer has threaded grooves 51, 52 which engage coupled screw rods 48 running the length of the frame 37 and which are reciprocated to cause the hammering action by crossheads 79, Fig. 5, slidable between guides 81, 82 in the carriage E and reciprocated by a crank-shaft 71 and connecting rods 74. Rotation of the screw rods for feeding the hammer 50 progressively forward is obtained from a drum-like gear 85, engaging a gear 84, and having sufficient length to permit the gears to remain in engagement during the reciprocating motion. During each feeding operation the mandrel rods 45 are brought to the same longitudinal starting position and are released during the rolling operation by intermittently clamping and releasing the headed ends 108 of the mandrel within the carriage E. For this purpose a pair of cross-heads 103, 117, slidable between guides 105, 106 are reciprocated out of phase with each other from the crank-shaft 71 so that the headed ends 108 are clamped between the cross-heads during one part of the revolution only. The mandrel carriage E is adapted to be raised to an inclined position, Fig. 1, for feeding tube blanks 58 on to the mandrels from an inclined loading bridge C having a feeding device 29 adapted to push the required number of blanks 58 down a shoot 57 and over the mandrel rods 45. Specification 409,145, [Group VI], is referred to.
Patent GB-1525663-A (GB)
Title: Washing machines
IPC: D06F37/36
Filed: 1976-02-26
Abstract: 1525663 Friction clutches FICHTEL & SACHS AG 26 Feb 1976 [28 Feb 1975] 07607/76 Heading F2C  A washing machine centrifugal clutch has input driven centrifugal friction segments 11 carrying pins 17 which co-act with cam apertures 16 in centrifugal control weights 14 and (e.g. plastics) pawls 21 pivoted on the weights 14 to hold the clutch disengaged for both speeds of a driving electric motor to provide two gear reduced washing speeds and to permit engagement during both driving speeds to provide two direct drive spin drying speeds.
Patent GB-777686-A (GB)
Title: Polyhydrophenanthrene compounds and their preparation
IPC: C07D317/72
Filed: 1953-09-17
Abstract: The invention comprises compounds having the formul : <FORM:0777686/IV(b)/1> in which the 7-position is occupied either by a bivalent group convertible to keto by acid hydrolysis, e.g. cyclic ketal groups, or by a pair of univalent groups together convertible to a single keto group by acid hydrolysis, e.g. non-cyclic ketal groups, and compounds having the formula: <FORM:0777686/IV(b)/2> in which the 7-position is occupied by a univalent group which is convertible to keto by acid hydrolysis, e.g. an enol ether group (in both formul  (a) and (b), R represents an alkyl group) and the preparation thereof by reacting the corresponding 2-methallyl-2,4b-dimethyl-dodecahydro- or decahydrophenanthrene with osmium tetroxide.  The reaction may be effected in a mixture of ether and benzene.  An example describes the preparation of the osmate ester of 1 - carbomethoxymethyl - 2 - (b ,g  - dihydroxy-isobuty) - 2,4b - dimethyl - 4 - keto - 7 - ethylenedioxy - 1,2,3,4,4a,4b,5,6,7,8,10,10a - dodecahydrophenanthrene. Specifications 763,208 and 777,687 also are referred to.
Patent GB-457578-A (GB)
Title: Improvements relating to electric cables
IPC: H01B7/38
Filed: 1936-03-14
Abstract: 457,578. Electric cables. OKONITECALLENDER CABLE CO., Inc., 730, 21st Avenue, Paterson, New Jersey, U.S.A. March 14, 1936, No. 7719. Convention date, March 16, 1935. [Class 36] A metal sheathed electric cable is provided with a longitudinally extending rip cord disposed between themetal sheath and the insulation, the rip cord being longer than the cable and having a wavy disposition so that the cable can be reeled without stretching and breaking the rip cord. In the example two rip cords 4, 5 consisting of crimped metal wire are disposed diametrically opposite each other and between an oil-impregnated paper insulation 2 and a temporary sheath 3 made of soft metal, for example lead. The sheath is used to protect the cable during transit to its installation site and is removed while the cable is being drawn into a pipe or conduit. Specification 409,678 is referred to.
Patent GB-229517-A (GB)
Title: Controlling and operating device for doors, especially doors of motor-cars
IPC: E05B65/12
Filed: 1924-03-27
Abstract: 229,517. Hehlen, J. March 27, 1924. Fastenings operated mechanically from a distance; pneumatically-controlled fastenings.-A spring-pressed reciprocable rod 9 mounted to slide in a bearing 24 fixed to the floor 25 of the vehicle, and moved by a pedal 28, has a projecting arm 10 which acts on a lever 11 pivoted to the door and engaging a sliding bolt 15 to withdraw it during the initial movement of the rod 9, while a pin 8 slides in a slot 31 in the rod. The pin 8 projects from a pivoted lever 6 which is rocked on further movement of the rod 9 to open the door. The rod 9 may be operated pneumatically, or by gearing driven from the vehicle engine, or by a hand lever. The apparatus may also be used for house doors operated from a distance.
Patent GB-1164051-A (GB)
Title: Improvements in or relating to Processes for the Production of Superconducting Wire or Strip
Inventor: EVANS RICHARD BARRY
IPC: H01L39/24
Filed: 1967-02-17
Abstract: 1,164,051. Making superconducting wire; working at specified temperatures. INTERNATIONAL RESEARCH & DEVELOPMENT CO. Ltd. 16 Jan., 1968 [17 Feb., 1967], No. 7771/67. Headings B3A and B3V. [Also in Division C7] A superconducting Nb-Ti alloy wire or strip is produced by heat-treating an alloy containing 40-70% by weight Ti, and balance Nb and impurities, first at 1000-1200 C. under inert conditions for up to 120 minutes, then, after rapid quenching to retain second phase constituents in solution and mechanically deforming below 200 C. to final dimensions and coating with an electrically-conducting material such as Cu or Al, at 360-450 C. for 30 to 90 minutes, and then allowing to cool to room temperature (15 C.). Additional heat treatment at 350- 450 C. for 30 to 90 minutes may be applied at a selected stage or stages of the deformation step, followed by allowing to cool below 200 C. before resuming deformation. For example, a cast ingot of 51% Nb-49% Ti, having 400 p.p.m. O, 490 p.p.m. C, 25 p.p.m. H, 700 p.p.m. N, was extruded at 1100 C. to a bar of ¥ inch diameter whilst clad in a Mo can to break down the as-cast structure. The bar was then inserted in a steel can and heat-treated at 1100 C for 1 hour in an argon atmosphere and quenched in water at 15 C. After cold swaging at 15 C. down to 0À11 inch diameter, the bar was placed in a hard drawn Cu tube of 0.13 inch inside diameter which was drawn on to the bar, the composite member then being drawn to give a core diameter of 0.01 inch. The final heat treatment at 400 C. for 1 hour and allowing to cool to 15 C. was in an argon atmosphere. For coating with A1, a plating process may be used after final deformation.
Patent GB-767476-A (GB)
Title: Styrene copolymers
IPC: C08F212/14
Filed: 1955-03-17
Abstract: Copolymers of styrene and glycidyl methacrylate are heat-reacted with oil acids, such as linseed, dehydrated castor, chinawood and saturated oil acids, to yield a resinous esterification product.  The copolymers may be obtained by heating in the presence of a solvent, e.g. xylene, and a catalyst, e.g. azodiisobutyronitrile and benzoyl peroxide.  In examples the copolymer is reacted at about 125 DEG  C. for 2 to 10 hours with the oil acids in xylene using benzyl trimethylammonium hydroxide as catalyst.  An air-drying coating composition is obtained by adding driers and, optionally, pigments and plasticisers, to the solution.
Patent GB-1133328-A (GB)
Title: Suspension polymerization process
IPC: C08F2/18
Filed: 1966-02-23
Abstract: 1,133,328. Suspension polymerization. DOW CHEMICAL CO. 23 Feb., 1966 [1 March, 1965], No. 7850/66. Heading C3P. Vinyl monomers, e.g. styrene, are suspension polymerized by incorporating in an aq. suspension of the monomer (1) a thixotropic paste of one or more inorganic suspension stabilizing agents of average particle size 0À5 Á and water in a weight ratio of 1 : 2 to 2 : 1, the stabilizing agent being 0À1-2% by wt. of the monomer, (2) one or more surface active agents which are anionic or amphoteric having both carboxyl and amino groups in amount of 0À01-2% by wt. of the suspension and (3) a protective colloid in amount of 0À0001-0À005% by wt. of the suspension, and heating the mixture. The stabilizing agent may be tricalcium phosphate and calcium carbonate, or a phosphate of barium, boron, strontium, magnesium, aluminium, zinc or cadmium; a silicate of aluminium or magnesium, magnesium carbonate or oxide or barium oxalate or sulphate. The surface active agent may be sodium (beta-, nonyl- or butyl-) naphthalene sulphonate or the partial sodium salt of N- lauryl imino dipropionic acid or N-lauryl amino propionic acid. The protective colloid may be sodium polyacrylate. A polymerization catalyst, e.g. a mixture of benzoyl peroxide, azobisisobutyronitrile and tert. butyl peroxide may be used.