baber/WOPTO huggingface dataset:
Patent GB-707285-A (GB)
Title: Improvements in or relating to electron emitting cathodes
IPC: H01J9/04
Filed: 1952-11-27
Abstract: 707,285. Making electron emitting cathodes. COMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL. Nov. 27, 1952 [Dec. 5, 1951], No. 30137/52. Classes 83 (2) and 83 (4). [Also in Group XI] Building up parts of articles by spraying.-A method of manufacturing an electron emitting cathode comprising a mixture of emitting oxides enclosed behind a layer of porous metal is characterized in that the porous layer is obtained by spraying finely divided fused metal on to a mould which is subsequently removed. A rod 1 of tungsten is fed through the central passage 2 of an oxyacetylene blow pipe comprising two conical frustrums 2<SP>1</SP> and 3. Oxygen is fed through the central passage 2 and acetylene through the annular passage 4 formed by the frustrums 2<SP>1</SP>, 3 and the combustion of the mixture fuses the tungsten rod. This finely divided fused metal is entrained by compressed air, nitrogen or a mixture of nitrogen and hydrogen, emerging from an annular passage 5 formed between the frustrum 3 and an outer conical frustrum 6. The body of the cathode which is placed 10-30 cms. away from the blow pipe, comprises a molybdenum or tantalum cylinder 7 having a flange 8 and an aluminium disc 9 which seals the end of the cylinder. The tungsten is deposited on the disc 9 and forms a porous plate 10. A tungsten grid 11 may be provided to strengthen the plate. The finished plate is polished and the aluminium disc removed by treating with hydrochloric acid. A layer 14 of a mixture of finely divided barium and strontium oxides is now provided against the tungsten plate the layer being supported by the closed end of a hollow cylinder 12 of tungsten, molybdenum or tantalum in which is mounted a heating element 13 to complete the cathode structure. Alternatively the metal rod may be heated by a propane-oxygen blow pipe or an electric arc. The surface of the porous tungsten plate may be of spherical cap-shape if desired as shown in Fig. 3. A cylindrical cathode for magnetron or like tubes is made by spraying tungsten on a revolving cylindrical mould the successive operations aftet spraying being as previously described
Patent GB-1178386-A (GB)
Title: Improvements in or relating to a Guide Way for Hovercraft.
Inventor: TREADGOLD PAUL HENRY
IPC: B60V3/04
Filed: 1966-07-05
Abstract: 1,178,386. Track for hovercraft. P. H. TREADGOLD. 22 Sept., 1967 [5 July, 1966], No. 30179/66. Heading B7L. A track for guiding a hovercraft 4 within a range of predetermined dimensions, comprises a shallow groove-like track in, on or above the ground, having a flat base 1 and sides 2, 3, each of a width substantially the same as that of the base 1, and inclined thereto at an angle a= sin-<SP>1</SP> 1/9. The base increases in width from one end to the other but the width of the sides remains constant. The base 1 at its narrowest point is wider than the largest hovercraft expected to use the track. The latter may be provided by a concrete layer set into the ground or formed by blocks placed on the ground. When the hovercraft weighing, e.g., 10 tons is subjected to the force of a side wind having a velocity not greater than a predetermined maximum, e.g. 60 m.p.h., the base of the hovercraft can ride on to the appropriate side 2 or 3 so as to be supported partially on the base 1 and the side 2 or 3. A restoring force due to the weight of the hovercraft opposes the lateral force of the wind and maintains the hovercraft in the guide way.
Patent GB-789405-A (GB)
Title: Improvements in or relating to electrical regulating circuits
Inventor: JOHNSON LESLIE BRIAN
IPC: G05F1/56
Filed: 1955-10-21
Abstract: 789,405. Automatic voltage or current control systems. MULLARD RADIO VALVE CO., Ltd. Oct. 21, 1955, No. 30232/55. Class 38 (4). A voltage stabilizer consists of a first transistor with its collector/emitter circuit in series between a D.C. supply and a load, the impedance of this circuit being controlled by one (or more) transistors in accordance with the load voltage. In one embodiment, Fig. 1, the transistor T1 is in series between the supply I, Il and the output OV, O and its base current is controlled by a transistor T2 in accordance with a portion of the output voltage tapped off a potential divider P. In a second embodiment, Fig. 2 (not shown), the series transistor is controlled via a buffer transistor stage, and the potential divider is connected to the output terminals via another buffer transistor stage. In a modification, a constant current is supplied to a load inserted between the reference source B1 and the collector of transistor T2. Reference has been directed by the Comptroller to Specification 751,679.
Patent GB-666780-A (GB)
Title: Improvements relating to alloy addition agents
IPC: C22C33/00
Filed: 1948-11-22
Abstract: A self-reducing alloy addition agent comprises a mixture of an oxide of a metal selected from the group consisting of molybdenum, chromium, tungsten and vanadium with calcium carbide, the particles of calcium carbide being stabilized by a coating of a waterproofing carbonaceous material, e.g. a substantially non-volatile petroleum oil, which also acts as reducing agent for the metal oxide.  The calcium carbide may be partly replaced by a more highly reactive reducing agent such as silicon, ferro-silicon, aluminium, magnesium or calcium silicide which is present in amount less than one quarter of the total amount of reducing agent cyclone separator in such a quantity that incomplete separation takes place, the unseparated particles being the smaller ones.  The particles large enough to be separated are screened out of the respective fractions, which now contain the incompletely separated fines.  These are, separately or together, further treated in a cyclone giving full separation. The separations are carried out in a suspension which may be magnetite and in this case the magnetite is separated out as shown in Fig. 1. The fine particles are recovered by thickening and the water thus obtained used for washing the screened products. Alternatively, in Fig. 2, the heavy fine particles of the mixture to be separated are used to form the medium.  In this case a classification step on the fine heavy fraction recovers the medium and a froth flotation step removes the medium from the light fines.  Specifications 601,063, 601,166, 604,368 and 655,957 are referred to.  The Specification as open to inspection under Sect. 91 includes also suitable layout of plant.  This subject-matter does not appear in the Specification as accepted.
Patent GB-229776-A (GB)
Title: Improvements in harvesting machines for maize and the like
IPC: A01D45/10
Filed: 1923-12-01
Abstract: 229,776. Rackham, A. G. H., and Ransomes, Sims, & Jefferies, Ltd. Dec. 1, 1923. Harvesting corn from uncut crops. -- Maize crops are removed from their stalks by being engaged between two inclined rollers 9 provided with helical threads 10 and rotated through a clutch from one of the main wheels of the machine. The inclination of and the distance between the rollers may be varied and one of the threaded rollers may be replaced by a fixed or movable guide or a plain or a fluted roller. The surfaces of the rollers may be knurled or otherwise roughened. One roller may be rotated more quickly than the other, the relative pitches of the threads being varied accordingly. The cobs fall on to conveyers 27 which carry them to an inclined shoot or conveyer 28 whence they pass to an attendant wagon, or into bags, or into a husking and shelling device. The main supporting wheels 2, 3 are carried on a divided axle. Pivoted guiding members 34 direct. the stalks between the rollers. The entire machine, or the rollers only, may be actuated by an engine on the machine.
Patent GB-602967-A (GB)
Title: Improvements in or relating to electro-magnetic make-and-break devices
IPC: H01H1/34
Filed: 1945-11-13
Abstract: 602,967. Electromagnetic interrupters. WEEKS, G. F. Nov. 13, 1945, No. 30381. [Class 38 (v)] In an electromagnetic interrupter, the adjustable fixed ' contact 5 is mounted on a plunger 6 which is slidable against the action of a spring 12 in the adjusting screw 7. During normal adjustment the parts 6, 7 retain their relative positions but, should the screw 7 be screwed in so far that the make-and-break action would be prevented and the platinum contacts would be in danger of being damaged, the resistance to movement of the contact 5 is sufficient to overcome the action of the spring and the plunger 6 moves to the dotted position shown, where it gives a visual and tactile indication of maladjustment.
Patent GB-281272-A (GB)
Title: Improved key-action for typewriters
IPC: B41J7/02
Filed: 1927-11-12
Abstract: 281,272. Kõppler, P. Nov. 27, 1926, [Convention date]. Type-lever actions; letterspacing mechanism. - In actions of the. kind in which the, keys are mounted on parallel levers, the lower levers having upright arms connected by links to typelevers mounted on an inclined segment, the space between the links and arms is utilized by arranging therein a universal bar actuated by extension of the lower Levers. In the action shown in the Figure, the keys 1 - - 4 are mounted on parallel levers 5, 6 pivoted on straight rods 8, 9, the lower levers having upright arms 7 connected by links 14 to the type-levers 15, and extensions 12 engaging a universal bar 13. The arms 7 are of graded lengths and are bent inwards into the planes of the type-levers. Returning- springs 17 are arranged between the links and type-levers. The rod 8 is slightly in front of the rod 9, the levers 5 being shorter than the levers 6. Space-key actions.-The space-key 19 is connected to a member 16 which carries arms 20 for actuating the universal bar 13 and is arranged immediately behind the rod 8.
Patent GB-320866-A (GB)
Title: Improvements in vacuum electric tube devices
IPC: H01J9/08
Filed: 1928-06-19
Abstract: 320,866. Robinson, E. Y., and Associated Eletetrical Industries, Ltd. June 19, 1928. Divided on 320,849. Vacuum tubes. - Tubular, indirectly-heated, metal cathodes contain as part of the heating system a wire coated with refractory insulating material such as porcelain by passing the wire through a hole through which the material is being extruded. A continuous length of wire is coated with kaolin, zirconia or thoria and the coating is dried and removed locally by crushing or scraping, drying and vitrification of the coating being produced in tubular ovens or a gas flame. The coated wire forms the core of a helical heater which may be carbonized after winding and which may be held at the ends by nickel clips. The Provisional Specification describes also genode electrodes similarly constructed.
Patent GB-177558-A (GB)
Title: Improvements relating to hoists and the like
IPC: B66B5/08
Filed: 1920-10-27
Abstract: 177,558. Provay, G. A. P. Oct. 27, 1920. Stopping automatically at end of run; emergency power cut-off gear.-Comprises a particular construction of apparatus for returning the controlling-lever of hoists to the inoperative position in the event of an overwind, or if the handle is released by the operator during the winding operation of the type in which worm reduction gear operates lost-motion devices which come into play at predetermined limits to return the controlling-lever to neutral position. A shaft 9, driven by worm gearing from the winding-drum, carries a crank-pin 13 which, in the event of overwinding, contacts with adjustable pins or stops 15 on a loose spur-wheel 14, and rotates the latter. The rotation is transmitted through a pinion 17 and linked shafts 18, 24 to the controlling-lever 28. A weight 33 hangs vertically from the shaft 24 in the inoperative position of the controlling-lever, and is raised when the lever is moved into either the " forward " or " reverse " positions. The weight thus assists the linkage in the restoring movement on overwinding, and also acts to restore the lever at any pcint during the wind, should it be released by the operator.
Patent GB-1263069-A (GB)
Title: Electroprecipitation
Inventor: TANNER EDWARD BUTLER
IPC: C09D5/44
Filed: 1968-06-26
Abstract: 1,263,069. Electro-deposition of polymeric material. E. B. TANNER. June 25, 1969 [June 26, 1968], No.30443/68. Heading C7B. An electro-precipitation process comprises electrolyzing a salt solution of film-forming polymer such that the electrolytic process at one electrode reduces the ability of the salt solution to maintain the polymer in solution to the extent that the polymer is precipitated on the electrode. The salt solution may be zinc chloride, a thiocyanate salt of an alkali metal or an alkaline earth metal, e.g. sodium or calcium thiocyanate, a mixture of calcium and magnesium bromide, calcium chloride or a salt solution containing alcohol. The filmforming polymer may be polyacrylonitrile; a copolymer of acrylonitrile, e.g. containing N-methylolacrylamide or N-methoxymethylacrylamide; a copolyamide; cellulose or an ether or ester thereof. The polymer may be deposited at the cathode, when if a metal salt such as zinc chloride is used, zinc will be co-deposited with the polymer. Zinc in the electrolyte may be replenished by using a zinc anode.
Patent GB-1491529-A (GB)
Title: Oxidation catalyst
IPC: B01J23/28
Filed: 1975-07-21
Abstract: 1491529 Acrylic acid NIPPON ZEON CO Ltd 21 July 1975 [26 July 1974] 30468/75 Heading C2C [Also in Division B1] Acrylic acid is made by the vapour phase oxidation of acrolein using molecular oxygen in the presence of a catalyst of the empirical formula Mo 12 P 0À1-8 V 0À1-8 L 0À1-8 M 0-6 O f  wherein L is Tl, Rb, Cs and/or K and M is Sr, Nb, Cd, B, Zn and/or Pb. The catalysts may be diluted with an inert diluent or supported on an inert carrier. The catalysts may be made by evaporative drying of a mixture formed from solutions of compounds of the desired elements, calcining, comminuting and optionally moulding the product, or by coprecipitation. The oxidation is preferably performed at 300-500 C., up to 15 atm. and a contact time of 0.1-20 sec. in the presence of an inert diluent gas such as steam using air as oxidant, an acrolein concentration of 1-25% v. and a molar ratio of acrolein : O 2  of 1 : 0À1-25À0.
Patent GB-226549-A (GB)
Title: Process for the preparation of cheese having an increased vitamine content
IPC: A23C19/06
Filed: 1924-12-18
Abstract: 226,549. Mellemeuropaeisk Patent- Financierings-Selskab Aktieselskab, (Assignees of Hamburger & Co. Ges., and Liebers, H.). Dec. 21, 1923, [Convention date]. Cheese in a ripe or semi-ripe condition is treated at 70-80‹ C. in a pug mill until it acquires a doughy consistency and after cooling to 60-70‹ C. is enriched in vitamines by the addition of 20-50 per cent by weight of yeast. Fresh pressed yeast is used or a liquefied product obtained by autolysis or by treatment with hyperosmotic solutions or by bursting the cell walls bv heat or cold or by mechanical means. The temperature is maintained between 60- 70‹ C. until a completely homogenous mixture has been formed. The mixture is then drawn off under sterile conditions and packed while warm. The Specification as open to inspection under Sect. 91 (3) (a) states also that other vitamine containing substances such as vegetable extracts, concentrated or non-concentrated fruit juices, fruit jam and the like may be used instead of yeast these being incorporated by intimately mixing them-with or without the addition of heat-to the ripe or semi-ripe cheese. This subject-matter does not appear in the Specification as accepted.
Patent GB-1222902-A (GB)
Title: Improvements in frame assembly for a gas turbine engine
IPC: F02C7/00
Filed: 1968-06-26
Abstract: 1,222,902. Gas turbine jet engines - rotor frame. GENERAL ELECTRIC CO. June 26, 1968 [June 26, 1967], No.30505/68. Addition to 1, 137, 940. Headings F1J and F1T. The invention relates to a frame assembly for a gas turbine engine, the assembly comprising an inner annular member, a coaxial outer annular member and a plurality of strut members interconnecting the two annular members. The outer annular member is of cylindrical form and comprises two axially-spaced rings secured to an outer casing, each ring having a fin member directed radially outwardly, the fins being aligned with the leading and trailing edges of the struts. The frame assembly 26 described is mounted downstream of the turbine 19 and serves to support a bearing 27 in which the turbine shaft 30 is rotatably mounted. The frame assembly comprises an inner annular member 40 and an outer annular member 42 with four aerofoil shaped struts 35 extending therebetween. The outer annular member is formed in sections 50, 61, and 63 welded together at 65, each ring section 50 having a radially-extending rib 52. The member is formed on its inner surface with four lugs 68 to which the radially outer ends of the struts 35 are secured by welding at 69. Strengthening ribs 70 are formed on the outer surface of the member opposite the lugs 68. An inner casing portion 44 is secured to the inner annular member 40 being formed with openings 46 through which the strut members 35 extend. The struts 35 may be disposed tangentially to the inner annular member 40 instead of radially as shown.
Patent GB-1490814-A (GB)
Title: Heat-resistant chocolate product and method of manufacturing same
IPC: A23G1/56
Filed: 1975-07-22
Abstract: 1490814 Heat resistant confection CADBURY Ltd 13 July 1976 [22 July 1975] 30570/75 Heading A2B A heat resistant confection, particularly chocolate, is made by mixing water, 15-35% by wt. of at least one edible fat and not less than 40% by wt. of sugar to form an emulsion, removing sufficient water to inhibit separation of the fat from solution, shaping, and drying to produce individual particles of fat encapsulated in a sugar glass. An emulsifier may be present and the fat is suitably cocoa butter. The product may be in expanded form produced either by gasifying, flash heating under reduced pressure or by injecting the solution through a nozzle onto a supporting surface in a vacuum chamber, possibly as a continuous stream onto a conveyor belt. The product may be enrobed with a conventional chocolate or other coating.
Patent GB-976559-A (GB)
Title: Improvements in or relating to germanium bodies
Inventor: BRADSHAW STANLEY EDWIN
IPC: C25D11/32
Filed: 1962-08-09
Abstract: A germanium body is given a coating of germanium dioxide in tetragonal crystalline form by forming the normal oxide on the surface either thermally or by anodizing electrolytically, and then heating at 120-200  DEG C. in a sealed vessel with a low molecular alcohol, e.g. methyl or ethyl alcohol, glycerol, or glycol. The tetragonal form of oxide is substantially insoluble in acids and alkalis, whereas the normal oxide layer is readily soluble in water. The first oxide layer is preferably made by electrolytic anodizing using a mixture of sodium acetate and glacial acetic acid as electrolyte for 1-5 hours.  The oxide layer is stated to be a mixture of amorphous oxide and hexagonal crystals.  The alcohol used in the second stage preferably includes a little tartaric acid, which reduces the conversion time to about 24 hours.
Patent GB-783619-A (GB)
Title: Improvements in and relating to variable ratio hydraulic power transmission devices
Inventor: WILLITT ARTHUR ADRIAN JOHN
IPC: F01B3/00
Filed: 1954-10-25
Abstract: 783,619. Hydrostatic transmissions; fluid-pressure servomotor-control systems. DOWTY EQUIPMENT, Ltd. Oct. 14, 1955 [Oct. 25, 1954], No. 30704/54. Classes 69 (2) and 135. An hydraulic transmission, for driving an alternating current generator at substantially constant speed from an aircraft engine, comprises a fixed displacement swash-plate pump driving a similar motor, and a governor controlled throttle valve controlling the pump inlet. The pump comprises cylinders 21 socketed in a plate 23 carried by a casing 14 fast with an input shaft 5, and pistons 17 socketed in a bearing ring 19 rotatably mounted on a stationary wobble plate 24 of fixed slope. The motor comprises cylinders 58 socketed in a plate 55 fast with the casing 14 and pistons 56 socketed in a bearing ring 54 rotatably mounted on a wobble plate 53 fast with an output shaft 7. An extension 66 of the output shaft carries an eccentric 65 actuating a disc valve 64. Pump discharge passes through check valves 38 and the disc valve 64 to the motor, the exhaust from the motor passing through valve 64 and inlet check valves 39 to the pump. A throttle valve 47 controls the liquid supplied to the inlet check valves 39, the valve 47 being controlled by means of a linkage from a servomotor piston 95. Servopiston 95 works in a cylinder 96 and is moved to the left by a spring 112 and to the right by liquid supplied by a gear pump 74, which also supplies make-up liquid. Supply and exhaust of liquid to and from the servo-cylinder is controlled by a valve spool 87 controlled by a centrifugal governor 85 rotated from the output shaft and by a follow-up valve sleeve 88. At the maximum speed of the prime mover the throttle valve is arranged to be fully closed so that the motor will do no work and the input and output shafts rotate at the same speed. At cruising speed of the prime mover the throttle valve is partially open, and at the minimum operational speed the valve is fully open so that the motor operates at maximum speed to give the required constant output speed.
Patent GB-373059-A (GB)
Title: Improvements in the construction of bodywork for motor or other vehicles
IPC: B62D29/02
Filed: 1931-11-06
Abstract: 373,059. Vehicle bodies. DASTE. M. J., 12, Rue Pierre Lhomme, Courbevoie. Seine, France. Nov. 6, 1931, No. 30799. Convention date, Jan. 17. Addition to 368,512. [Class 108 (i).] In the vehicle body work described in the parent Specification the rounded back part of the body is mounted on the platform by three flexible joints the central one having its axis horizontal and longitudinal while the flanking ones have their axes vertical. The central joint comprises a pin 46 with sleeve 45 connected to the cross member f<2> of the back part f. A co-operating member 41 secured to the platform c surrounds the pin 46 and encloses a mass 44 of rubber which is initially deformed both radially and longitudinally. The flanking flexible joints comprise a vertical pin 36 and sleeve secured to the platform' and surrounded by rubber 35 initially deformed as in the central 'joint the rubber being housed in a member 34 secured to the uprights f<3>. The joints described in Specification 373,058 may be employed.
Patent GB-365526-A (GB)
Title: Rubber substitute
IPC: C08L1/12
Filed: 1930-10-15
Abstract: A rubbery composition is made by dissolving cellulose acetate in a mixture of solvents, dissolving or suspending a plasticizer therein, and precipitating the acetate and plasticizer from the solution by the addition of a liquid, the mixed solvent being such that at least one ingredient is readily miscible, and at least one is immiscible with the precipitating liquid.  The composition is continuously agitated during precipitation.  Numerous solvent mixtures and plasticizers are described in the Specification.  For strength and toughness, the miscible solvent should include an acid, while acetone or alcohol combinations produce a composition of greater elasticity and softness.  The following example is typical-to 15 gals. of 10 per cent solution of cellulose acetate in acetone, 1 gal. of triacetin, 1/2 gal. of cresol, 3 gals. of aniline, 1/4 gal. of acetic acid, is gradually added water as a precipitating agent with continuous stirring.  The qualities of the product may be modified by various additions; zinc or ferric chloride reduces inflammability; tannic, salicyclic, glycollic acids enable the amount of water miscible solvent to be reduced.  The product may be exposed to vapours of aldehydes, or aldehydes may be added to the solution before precipitation.