baber/WOPTO huggingface dataset:
Patent GB-643007-A (GB)
Title: Magnetron electron discharge device generator
IPC: H01J25/587
Filed: 1945-12-05
Abstract: 643,007. Magnetrons. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Dec. 5, 1945, No. 32950. Convention date, Feb. 6, 1943. [Class 39 (i)] A magnetron-type oscillation generator including an anode composed of an even number of segments whose ends define a cylindrical cathode chamber, has an axial audio-frequency alternating magnetic field whose flux density in the cathode chamber decreases radially from a maximum in the vicinity of the cathode, so that electrons are caused to accumulate in and to follow circular paths within which the magnetic flux density is twice that along the circular paths. The principles of magnetic induction accelerators are applied to form a rapidly rotating cylindrical sheet of electrons which produces periodically short duration pulses of radio frequency energy. The frequency of repetition of the pulses may be varied by the superimposition of a direct current magnetic field upon the alternating magnetic field, or by changing the frequency of the alternating magnetic field. The phase of the pulses may be changed by changing the phase of the alternating magnetic field with respect to a source of reference current of the same frequency as the alternating field. A magnetron housing a two segment anode 352, Fig. 2, and a central coiled filament 360 is mounted in the gap of the central leg of a threelegged magnetic core 350. The central leg is so designed that the polefaces 310 provide the desired tapering magnetic field. The magnetic field flux density decreases from a maximum in the vicinity of the cathode and then increases again in the vicinity of the anode segments. The anodes are tuned with conductors 370 which also serve as radiators. The segments of the multi-cavity anode structure 210, Fig. 3, are separated from each other by spacers 205. The spacers may be of high resistance material permitting the passage of the anode D.C., while preventing the flow of currents induced by the magnetic field, or they may be of insulating material and shunted with resistances for passing the D.C. The annular cathode 200 may be indirectly heated by an interior heater, or by induction from the magnetic field. A biassing potential derived from the output line 380 may be applied to a control grid 383 to prevent undesired multiple pulses. By means of an adjustable resistance 390 the electron current may be made independent of cathode temperature, so long as the temperature remains higher than that which would cause saturation of electron current. Specification 466,836 is referred to.
Patent GB-393292-A (GB)
Title: Improvements in and relating to electric power cables
IPC: H01T7/00
Filed: 1931-11-27
Abstract: 393,292. Cables. SONNENFELD, H., 16, Lazaretgasse, Bratislava, Czecho-Slovakia. Nov. 27, 1931, No. 32965. Convention date, Dec. 13, 1930. [Class 36.] A cable comprises one or more conductors having porous and stratified insulation which are loosely laid in a pipe system containing an insulating fluid, such as oil or carbon dioxide, under high pressure, the fluid being in direct contact with the conductor insulation and wholly or partially penetrating it. If the conductor-insulation is pre-impregnated with an insulating composition the fluid pressure medium filling the pipe consists of a substantially similar composition. The pipe system may be rigid or may comprise a flexible metallic tube having fluid-tight coverings, preferably of guttapercha, applied on its surfaces. The Figure shows a conductor 1 having impregnated paper insulation 2 laid in a pipe 4 filled with pressure fluid 3. The drying and impregnation of the insulation 2 may be carried out either at the works or after the cable has been laid. The drying of the insulation 2 may be omitted when the pressure of the fluid 3 is sufficiently high. To protect the insulation 2 from damage during the " drawing- in " process, protective helices, which may be perforated and formed of wire or insulating metarial, may be wound over the insulation 2. In a multicore cable, the separately insulated conductors are stranded together and surrounded by a protective helix. If the cable is formed with belt insulation the protective helix may be omitted. To increase the breakdown voltage of the cable, the insulated conductor or cores may be separated from the wall of the pipe by insulating spacers, which may, in some cases, be formed by the protective helix.
Patent GB-845339-A (GB)
Title: Improvements in or relating to the uprooting of bushes and the like
IPC: A01G17/16
Filed: 1958-10-16
Abstract: 845,339. Load-handling machines. HOLLEBONE, J. E. Oct. 16, 1958, No. 33018/58. Class 78 (3). Apparatus for pulling out bushes 3 and other landfast objects, comprises a pair of spring- loaded jaws 5, 6 pivoted on a bolt 9 which is secured to a member 7 slidably mounted on a pair of arms 8 pivoted to an operating lever 4; a bolt 14 secured to the arms 8 and connected with arms 5, 6 by links 12, 13; and a pair of levers 17 pivoted to lever 4 and the sliding member 7. In operation, pivoting lever 4 about is fulcrum on the wheel axle 1, to lift the bush, increases the distance between bolts 9 and 14 and thereby increases the grip of the jaws. A further lever 19, engaging the levers 17 through an abutment 20, is provided to open the jaws.
Patent GB-429158-A (GB)
Title: Improvements in and relating to lighting systems
IPC: H05B41/10
Filed: 1934-11-16
Abstract: 429,158. Control systems for vacuum &c. discharge apparatus. BRITISH THOMSON - HOUSTON CO., Ltd., Crown House, Aldwych, London. Nov. 16, 1934, No. 33050. Convention date, Nov. 18, 1933. [Class 38 (iv)] In a lighting supply system for electric discharge lamps, A.C. is first supplied to all the cathodes in series through shunt circuit about the lamps, and after an interval, D.C. is supplied through the lamps in series, the shunt circuits being cut out. When the time delay switch 14, Fig. 1, is operated, switch 18 first supplies A.C. current, through switch 19 and lead 23 to switches 34 and cathodes 28 of all the lamps. This current passes through coils 31 of a relay, the coils of which each carries a short circuited winding 33 so that they do not respond to A.C. After an interval, switch 19 is operated so that only D.C. is supplied. The switches 34 then operate and cut out the shunt circuits 37, the cathodes being then heated by the electric discharge between the cathodes 28 and anodes 27. Film cut-outs 43 break down and permit D.C. to flow when the corresponding tube fails in operation. In a modification, Fig. 2, the heating filament 48 is enclosed within a tubular cathode 47 and carries the D.C. discharge as well as the A.C. In a further modification, Fig. 3, D.C. with an A.C. ripple superimposed upon it is supplied, the A.C. serving as before to heat the cathode 28 when starting and thereafter continuing to heat it by means of the transformers 53 through the primary of which the whole of the A.C. and D.C. discharge passes.
Patent GB-898436-A (GB)
Title: Improvements in or relating to phonographs
IPC: G11B17/02
Filed: 1957-10-23
Abstract: 898,436. Automatic gramophones. HANSEN, H. C. Oct. 17, 1958 [Oct. 23, 1957], No. 33107/57. Drawings to Specification. Class 40 (2). The Specification relates to an automatic gramophone having a track-finder mechanism in the pick-up head substantially as in Specifications 788,053 and 788,054, but the claims are directed to different features. Specifications 852,061, 859,371;859,372, 889,661 and 898,437 also are referred to.
Patent GB-811447-A (GB)
Title: Apparatus for feeding farm animals
IPC: A01K1/02
Filed: 1955-11-19
Abstract: 811,447. Animal-feeding appliances. BEAMS, C. G. Nov. 19, 1956 [Nov. 19, 1955], No. 33170/55. Class 5(2). An animal feeder comprises wooden or metal pens 4 side by side, with separate entrances arranged along one side of the feeder, each pen having a gate 10, 10<SP>1</SP>, mounted in such a way that the animal can only push it open from within the pen and that it closes automatically after the animal has left the pen. The side, end and partition walls are of slats 5 secured to uprights 6 ; the roof is of similar slats 7. The floor 8 is closely planked or solid and is mounted on longitudinal skids 9 for towing. Each gate 10, 10<SP>1</SP>, preferably hinged at the top edge, can be folded back upon the top of the unit and has a bolt 11, but it may be self-closing by means of a spring or counter-weight instead of being top-hinged. A trough 12 is formed in each pen by a removable board 13.
Patent GB-1506023-A (GB)
Title: Lining shield
IPC: E21D9/06
Filed: 1976-07-23
Abstract: 1506023 Tunnelling shields DOSCO OVERSEAS ENG Ltd 23 July 1976 [8 Aug 1975] 33187/75 Heading E1F In a shield for lining an excavation or tunnel which extends axially away from a working face there is provided one or more deflector plates 5, 5' that can be moved relative to the shield to take up an inclination relative thereto so that debris on the or each plate will be tipped into a collecting zone 3 within the shield. Preferably the zone, which may house a conveyer. is located centrally within the shield and the deflector plates extend axially along both sides of the zone. The or each plate can be associated with one or more screens movable with the or each plate to prevent uncontrolled spillage of debris from the plate or plates. Each screen preferably comprises a flange 7, 7' which is received in a recess 8, 8' in the annular wall 1 of the shield when the plate is positioned to receive debris entering the shield. Each plate and associated flange is preferably in the form of a sector of a cylinder and the plates are moved by rams 10, 10' housed in the wall 1 of the shield. An excavating machine may be accommodated within the shield.
Patent GB-744882-A (GB)
Title: Improvements in or relating to ion sources
IPC: H01J49/14
Filed: 1953-11-30
Abstract: 744,882. Discharge apparatus. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Nov. 30, 1953 [Dec. 3, 1952], No. 33191/53. Class 39 (1). An ion source comprises a plurality of cylindrical grids 2, 3, coaxial with the cathode 1, and a cylindrical anode 4 coaxial with the cathode and having one or more slits 5 parallel to the cathode to allow passage of the negative ions, the anode being at such a small negative potential relative to the outer grid electrode 3 and the outer grid electrode being so constructed that the electrons are mainly intercepted by the anode. The negative ion beams which pass through the slits 5 are, by means of the focusing and accelerating electrodes 6 and 7, fed to the analyser of a mass spectrometer, to a mass separator or to a leak detector. The potential of the anode 4 relative to the cathode 1 is approximately 145 volts positive and that of the grid 3 approximately 150 volts positive. Additional plate electrodes 9, 10 can be arranged outside an aperture 8 in the anode 4 and between the anode and outer grid 3 respectively, and having a voltage negative relative to the cathode for the collection of positive ions, the rate of ion-collection being used as a measure of the pressure in the ionisation chamber, a switch interrupting the cathode current when the pressure is excessive. In addition to the constant bias an alternating voltage may be applied to the grid 3 and the electrodes 9 and 10 may have A.C. amplifiers connected to them.
Patent GB-325017-A (GB)
Title: Improvements in or relating to the preparation of alumina and potassium sulphate
IPC: C01F7/32
Filed: 1928-11-13
Abstract: 325,017. Tilley, G. S., Dam, M. E., and Dam, E. S. Nov. 13, 1928. Potassium sulphate; sulphur dioxide; sulphur trioxide.-Crystallized potash alum is partially dehydrated without melting the crystals by heat. ing to 80-85‹ C. until more than one half of the water of crystallization is removed. The product is heated to a temperature sufficiently high to drive off the sulphur trioxide in combination with the alumina, that is 800‹-1000‹ C. The potassium sulphate and alumina may be separated by leaching. The sulphur trioxide may be absorbed in strong sulphuric acid and any residual gases containing sulphur dioxide absorbed in milk of lime to produce sulphites.
Patent GB-1487385-A (GB)
Title: Furnace heating
IPC: C21D9/70
Filed: 1974-07-26
Abstract: 1487385 Fluent fuel fired furnaces BRITISH STEEL CORP 25 July 1975 [26 July 1974] 33213/74 Heading F4B In a soaking pit or similar furnace having a main burner 3 mounted above a flue outlet or outlets 5, 6 in one end wall, an auxiliary burner 4 is mounted below the main burner in the same end wall. The burners are preferably evenly spaced over the height of the furnace, and the upper burner has a greater fuel input than the auxiliary burner, which may be a tunnel burner having a higher thrust/fuel flow ratio than the main burner.
Patent GB-640302-A (GB)
Title: An improved device for adjusting the upper working roll in a mill-stand
IPC: B21B31/24
Filed: 1947-12-18
Abstract: 640,302. Rolling. BOHLER, V. Dec. 18, 1947, No. 33477. Convention date, Dec. 19, 1946. [Class 83 (iv)] In a pass adjustment device comprising thrust screws 3 and nuts 4, each screw has a bore 13 into which engages a spindle 14 which drives the screw by means of a bush 15, gearing 16-19 and motor 20. The spindle 14 may be articulated, to allow for displacement between the bush 15 and screw 3, which is guided in the nut 4 by bushes 21, 22, to prevent misalignment of the axes due to the large clearances allowed between the threads.
Patent GB-629860-A (GB)
Title: Improvements in spring assemblies for furniture and the like and furniture springs therefor
IPC: A47C23/053
Filed: 1947-12-18
Abstract: 629,860. Connecting upholstery springs. PULLMAN (PATENT) PRODUCTS, Ltd., and DAVIS, J. M. Dec. 18, 1947, No. 33484. [Class 52 (iv)] In an upholstery spring assembly the overlapped end turns of the springs 1 are connected together by wires 4 having hook-like portions 5 which grip both the end turn 2 and next turn 3 of a spring in each connected pair, the springs being unknotted and preferably crimped as shown. The tie wire is preferably that described in Specification 515,821.
Patent GB-758533-A (GB)
Title: Improvements in or relating to tapes for sliding clasp fasteners
Inventor: LILLEY JOHN RAYMOND
IPC: A44B19/34
Filed: 1953-12-02
Abstract: 758,533. Zip fastener tape. NARROW FABRICS (LILLEYS), Ltd. Nov. 12, 1954 [Dec. 2, 1953], No. 33501/53. Class 142 (4). [Also in Group XXV] To obviate longitudinal slipping of the thick thread 5 in the beaded edge during attachment of the fastener elements, it is secured by stitching 10 and/or by loops of the weft 1 directly contacting it. There may be warp threads 11 all the way round the thick thread, or they may all be omitted (in which case the stitching can be omitted). One or both of the selvedge warp threads 7 may be omitted; if present they are preferably heat-set (substantially inextensible) synthetic yarn. The thick thread 5 may be a monofilament, a cabled yarn, a stuffer yarn, a knitted tube, or a knitted tube containing a stuffer yarn.
Patent GB-342369-A (GB)
Title: Loud-speakers
IPC: H04R1/28
Filed: 1929-11-05
Abstract: 342,369. Loud-speakers. HULME, F. HORACE-, 27A, Bridget Street, Rugby. Nov. 5, 1929, No. 33625. [Class 40 (iv).] A loud-speaker, the diaphragm 3 of which can emit useful sound waves from both sides, has two separate sound directing passages 12 associated with one side of the diaphragm, these passages being curled round at their inner ends and arranged to lie adjacent opposite side walls 8 of a sound passage 6 associated with the other side of the diaphragm. Longitudinal sound reflecting surfaces are arranged along the angles of the passages. In the construction shown in Fig. 1, the walls 7, 7 are inclined to one another at an angle of about 30‹ whilst in Fig. 3 they contain an angle of about 90‹. The loud-speaker walls may be formed of thick cast iron, steel, stone &c. or the sound directing passages may be formed in situ, in the walls of, or in pillars in, a hall or other building.
Patent GB-1512516-A (GB)
Title: Polyester composition
IPC: C08K5/00
Filed: 1974-07-31
Abstract: 1512516 Polyester compositions IMPERIAL CHEMICAL INDUSTRIES Ltd 1 July 1975 [31 July 1974] 33698/74 Heading C3R A thermoplastic polyester composition comprises, by wt., 2-70% inorganic filler (F) and 0À05-3% CaO and/or SrO (0), which stabilizes the melt-viscosity. (F) may be glass fibre, mica, wallastonite, clay, talc, or graphite. Also present may be fire-retardants. (0) may be coated with moisture-excluding barrier material, e.g. wax. Polyesters include those derived from terephthalic acid and ethylene glycol or tetramethylene glycol with or without tetramethylene ether glycol.
Patent GB-1563301-A (GB)
Title: Antiperspirant compositions for application to the skin from pump-spray or roll-on applicators
IPC: A61K8/00
Filed: 1976-08-13
Abstract: The composition is intended to be applied to the skin from a pump spray applicator or a roll-on applicator and consists of a liquid, propellant-free medium which contains   A) 40 to 85% by weight, based on the total weight of the composition, of an alcohol, B) 5 to 25% by weight, based on the total weight of the composition, of an aluminium chlorhydroxide complex dissolved in the alcohol, and   C) dissolved in the composition   a) 5 to 40% by weight, based on the total weight of the composition, of a cyclic polydimethylsiloxane of the formula I <IMAGE>  or b) 1 to 10% by weight, based on the total weight of the composition, of a non-volatile polyphenylmethylsiloxane or of a poly-higher-alkylsiloxane in which each alkyl radical has at least three carbon atoms.   The composition is highly effective in respect of adhesion to the skin and reduction or virtual elimination of the problems of antiperspirants supplied in powder form, namely dusting and lack of adhesion to the skin. In addition, the composition has the advantage that it considerably reduces the stickiness of alcoholic solutions of the aluminium complexes.
Patent GB-950860-A (GB)
Title: Improvements in or relating to printed circuit articles
Inventor: MIKULIS BENJAMIN MORRIS
IPC: H05K1/02
Filed: 1960-10-03
Abstract: 950,860. Laminates. SANDERS ASSOCIATED Inc. Oct. 3, 1960, No. 33845/60. Heading B5N. A printed circuit unit comprises a copper conductor strip or strips 24 bonded to a base 28 of thermoplastic material and surrounded or partly surrounded by a layer 26 of non-thermoplastic material out of contact with the conductors, the whole being covered by a second thermoplastic layer. The layer 26 is stated to prevent lateral deformation of the conductor strips during the bonding process, and to facilitate trimming of the finished unit to size, for example by tearing as shown. The conductor strips may be formed by printing the copper layer, after bonding to the base, with a resist in a pattern, etching away the unprotected parts and removing the resist. The layer 26 may consist only of strips extending partly down the sides of the laminate connected by a cross-strip, and may comprise parts of the copper layer preserved during the etching process. Alternatively the layer 26 may be of other metal, or a phenolic resin. The thermoplastic layers may be of polythene, polyvinyl chloride, butyral, acetate or alcohol, polyvinylidene chloride, polymethyl methacrylate, a polyamide, or cellulose acetate, but preferably comprises polychlorotrifluoroethylene or polytetrafluoroethylene; in which case a layer of cupric oxide may be formed on the copper layer before bonding by dipping in a hot alkali chlorite solution after cleaning successively with solutions of alkali, hydrochloric acid and ferric chloride, and sodium cyanide. Bonding to the fluoro-polymer, in sheet or powder form, may be effected in a platen or rotary press at about 216‹ C., the laminate produced being removed and cooled, and a separator sheet of aluminium foil, initially placed beneath the polymer, being stripped off. In other procedures the laminate may be cooled in the press.
Patent GB-1191105-A (GB)
Title: Improvements in or relating to Electrochemical Generators
IPC: H01M50/528
Filed: 1967-07-24
Abstract: 1,191,105. Accumulators having spiral electrodes and inner and outer cylindrical terminals. SOC. DES ACCUMULATEURS FIXES ET DE TRACTION. 24 July, 1967 [25 July, 1966], No. 33978/67. Heading H1B. An electrochemical current-generator comprises a first metal cylinder disposed within and insulated from a second metal cylinder, with positive and negative spiral electrodes disposed in the annular space thereby defined, the or each positive electrode being electrically connected to one of the cylinders and the or each negative electrode being electrically connected to the other cylinder. The electrodes must be separated by a porous separator and are preferably electrodes of a Cd-Ni of Cd-Ag alkaline cell and not more than 1 mm. thick, having uncoated metal spiral edges which may be welded directly or by metal extension to the cylinders. Fig. 1 shows an alkaline Cd-Ni accumulator having a negative electrode 1 and positive electrode 2 wound with porous separator 3 on to inner cylinder 5, all inside cylinder 6, the two cylinders forming with insulating rings 7 the housing 4. Each electrode comprises a perforated metal sheet coated with sintered Cd(OH) 2  or Ni(OH) 2  and having unperforated, uncoated spiral edges 11a or 12 connected to the terminal cylinders.
Patent GB-481219-A (GB)
Title: Improved hollow rubber ball and method of making the same
IPC: B29D22/04
Filed: 1936-12-10
Abstract: 481,219. Balls for games. ROBERTS, F. T. Dec. 10, 1936, No. 33990. [Class 132 (ii)] A tennis or like ball comprises a closed hollow sphere of rubber with a comparatively great internal diameter and comparatively thin wall. The sphere being wound with stretched rubber strands and the ball completed by an external cover. The uninflated rubber sphere forming the core of the ball is formed by vulcanizing together two semi-vulcanized hemispherical cups 1, Figs. 10 and 11. The core is wound with tensioned rubber strands 30, the usual felt cover 40 cemented thereon, and vulcanization completed. The cups are preferably of the kind described in U.S.A. Specification 1,964,008, being provided with internal ribs to prevent their collapse under the compression of the winding. The ribs may be moulded on the inner walls of the cups, or may be moulded on the outer walls and the cups introverted. In the latter case, the ribs are in a state of initial compression and further increase the rigidity of the core.
Patent GB-1459954-A (GB)
Title: Polycarbonate moulding compositions
IPC: C08L69/00
Filed: 1975-08-15
Abstract: 1459954 Polycarbonate moulding compositions BAYER AG 15 Aug 1975 [16 Aug 1974] 34075/75 Heading C3R A thermoplastic moulding composition comprises (a) an aromatic polycarbonate, derived from a diphenol having a molecular weight of from 10,000 to 100, 000, (b) 10 to 40% by weight of glass fibres, based on the weight of polycarbonate and glass fibres, and (c) 0À5 to 5% by weight, based on the total composition, of a polyalkylene terephthalate having a molecular weight of from 10,000 to 80,000. The glass fibres may have lengths between 6 mm. and 60 mm. or between 0À05 mm. and 5 mm. The composition may also contain titanium dioxide. The examples describe compositions containing in addition to glass fibres, a polycarbonate derived from bisphenol A and polyethylene terephthalate or polybutylene terephthalate.