baber/WOPTO huggingface dataset:
Patent GB-2462027-A (GB)
Title: Apparatus and method relating to time-delay systems for phased-array antennas
Inventor: ALAMEH KAMAL
IPC: H01Q3/26
Filed: 2008-03-28
Abstract: A time-delay system (10) for a phased-array antenna receiver comprises: a plurality of planar delay elements (50a-z), each arranged to be connected to a different antenna element (30a- z) of the phased-array antenna and each arranged to provide an electrical output signal, and a combiner (70) arranged to receive the electrical output signals from each of the plurality of planar delay elements (50a-z) and to produce a composite output signal. Each planar delay element (50a-z) comprises: an input for receiving an electrical input signal from the antenna element (30a-z) to which the planar delay element (50a-z) is arranged to be connected, a laser (100) for producing a light beam; a modulator arranged to modulate the laser's light beam according to the electrical input signal received from said antenna element (30a-z), and a planar waveguide (110) on a first substrate (140). The waveguide (110) is arranged to guide the laser's light beam. The waveguide (110) includes a plurality of optical taps (158) for transmitting from the waveguide (110) a fraction of the guided light beam. The taps (158) are spaced along the waveguide (110), so that in use a signal carried on the transmitted light has been delayed by a different amount when it reaches each tap (158). Each planar delay element (50a-z) also comprises: a plurality of photodetectors (168), each photodetector (168) being arranged to detect light transmitted by a one of the taps (158) and to generate an electrical photodetector output signal in response to the detected light; and a combiner for combining the photodetector output signals to form the electrical output signal of the planar delay element (50a-z).
Patent GB-329389-A (GB)
Title: Improvements in the manufacture and production of pure benzoic acid
IPC: C07C51/487
Filed: 1929-02-18
Abstract: 329,389. Johnson, J. Y., (I. G. Farbenindustrie Akt.-Ges.). Feb. 18, 1929. Divided on 329,375. Benzoic acid; phthalic acid.-The methods of Specifications 307,343 and 329,375, according to which benzoic acid contaminated with naphthoquinones and phthalic anhydride is purified by reducing the naphthoquinones and hydrating the anhydride, the converted impurities being then leached out with water, are modified by omitting the reduction step, in the case where phthalic anhydride is the only impurity to be considered. The benzoic acid so obtained, or the alkalimetal benzoates prepared therefrom, may be further purified as described in Specification 329,375. Examples are given in which (1) benzoic acid containing phthalic anhydride but free from naphthoquinones is melted under dilute caustic soda solution; purified benzoic acid separates on cooling, and phthalic acid may be recovered from the mother liquor; (2) the impure benzoic acid is melted under an aqueous suspension of lime.
Patent GB-1274347-A (GB)
Title: Process for polymerisation of tetrahydrofuran
IPC: C08G18/48
Filed: 1970-03-03
Abstract: 1,274,347. Polymerizing tetrahydrofuran. KAO SOAP CO. Ltd. 3 March, 1970 [3 March, 1969], No.10120/70. Heading C3R. Tetrahydrofuran is polymerized in the presence of fuming sulphuric acid containing 15 to 43 wt. per cent of free sulphur trioxide. There may be from 10 to 40 parts by weight of fuming sulphuric acid present per 100 parts by weight of tetrahydrofuran. The polymerization is carried out at -40‹ to 100‹ C., with or without a solvent. Examples are given.
Patent GB-1062261-A (GB)
Title: Preparation of an aromatic ether compound
IPC: C07C43/263
Filed: 1963-03-14
Abstract: 3: 31-Diphenoxy diphenyl (see Division C2) is used as a lubricant or heat exchange fluid.ALSO:3: 31-Diphenoxydiphenyl is prepared by reacting 3:3-haloaniline, e.g. 3-chloro- or 3-bromo-aniline, with an alkali metal phenate, e.g. sodium or potassium phenate in the presence of copper or copper bronze at temperatures up to 300 DEG C., e.g. within the range of 180-300 DEG  C., to produce 3-phenoxy aniline, diazotizing the latter compound, replacing the diazonium halide group by an iodide or bromide by any well-known method, e.g. by subjecting the diazonium compound to a Sandmeyer reaction and self-condensing the 3-halodiphenyl ether in the presence of copper or copper bronze at temperatures up to 300 DEG  C., e.g. in the range of 180-300 DEG  C.
Patent GB-493764-A (GB)
Title: Improvements relating to insecticides
IPC: A01N33/26
Filed: 1937-04-09
Abstract: An insecticide comprises a diazoamino-compound free from sulphonic acid groups and carboxyl groups in admixture with one or more of a solid inert substance, a wetting-agent, or an adhering agent. Specified compounds are phenyldiazopiperidine, diazoaminobenzene, p-nitrophenyldiazoaminobenzene, p-chlorophenyldiazobenzylamine, 4 - chloro - 2 - methoxy - phenyldiazoamino-21-methoxy - 41 - chlorobenzene, phenyldiazohexahydrocollidine, o - methylphenyldiazopiperidine, and p - thiocyanate of phenyldiazo - piperidine.  Wetting-agents specified are aromatic sulphonic acids and hydroxyethylated phenol, and the inert substance may be chalk, talc, or kaolin. Food poisons such as calcium arsenate or contact poisons such as nicotine, pyrethrum, or derris may also be present. Decoys such as sugar, honey, or amyl acetate may also be added. Specification 238,287, [Class 140], is referred to.
Patent GB-870298-A (GB)
Title: Improvements in or relating to compositions for combating nematodes
IPC: A01N43/02
Filed: 1959-03-24
Abstract: A composition for combating nematodes, comprises in admixture with a solid or liquid, inert carrier material, and a surface-active substance and/or dispersion agent, an active ingredient of the general formula <FORM:0870298/VI/1> wherein X and Y are bivalent atoms or groups which form with the two benzene rings a condensed system of three six-membered rings, R and R1 each designate halogen atoms, preferably chlorine atoms; alkyl-groups with 1 to 5 carbon atoms; or each designate a substituent group of the formula COCH3, COCH2 Hlg, in which Hlg is a halogen atom, SO3Na, NO2, OH, OR11 or SR11, in which R11 is an alkyl group with 1 to 5 carbon atoms; and n and m are equal to 0, 1 or 2.  The composition may be in the form of a miscible oil, e.g. consisting of a solution of about 25 parts by weight of active material in a mixture of 10 parts by weight of a polyoxyethylene-sorbitan fatty acid ester, 15 parts by weight of spindle oil and about 50 parts by weight of xylene or water dispersible dust, e.g. a mixture of about 10 parts by weight of active substance, about 3 parts by weight of sulphite lye powder, about 3 parts by weight of alkylarylsulphonate and about 80 parts by weight of dolomite ground together to an average particle size of about 10 microns or less or in the form of a dust consisting of about 88 parts by weight of attaclay impregnated with a solution of about 10 parts by weight of active substance in about 25 parts by weight of acetone, the acetone being mainly evaporated and the product obtained being then ground.  Specified active ingredients are diphenylenedioxide, phenoxathiine, 2-methylphenoxathiine, 3 - methylphenoxathiine, 4-methylphenoxathiine, 2 - chlorophenoxathiine, 3 - chlorophenoxathiine, xanthene, xanthone, phenoxselenine, phenoxtellurine, thioxanthene, thioxanthone, thioxanthione, thianthrenemonosulphoxide.
Patent GB-966042-A (GB)
Title: Improvements in or relating to methods for thermistor matching
Inventor: ROGERS LOUIS JOHN
IPC: G01N30/66
Filed: 1961-03-21
Abstract: 966, 042. Bridge measurements; testing thermistors;measuring electrically. UNION CARBIDE CORPORATION. March 21,1961, No. 10173/61. Headings G1N and G1U. A method for matching the resistance/temperature characteristics of at least two thermistor sensing elements, comprising shunting at least one thermistor with a variable resistor, equally varying the thermal environment of the thermistors to obtain an equal variation of temperature, measuring the difference in the resistances of the thermistors due to the environmental variation and adjusting the variable resistor to minimise such resistance difference. A Wheatstone bridge comprises fixed resistances 12, a reference thermistor 14, and a measuring thermistor 16 supplied from source 18 over switch 26 selecting over a normal direct path or through a test series resistance 24; the bridge unbalance voltage being applied to a recorder and a switch 22 enabling a variable matching resistance 20 to be connected across either thermistor or disconnected. Initially with switch 26 at normal, variable resistance 20 disconnected, and the thermistors exposed to similar thermal conditions, the recorder is operated to describe its zero base line. Switch 26 is operated to select resistance 24 and reduce the bridge voltage input, so that for matched thermistors there is no change of the zero line, which is however offset by any mismatch. Switch 26 is returned to normal and switch 22 is operated to selectively shunt the resistance 20 across either thermistor in turn, for adjustment until there is minimum change of the base line position at operation of switch 26. The change of energization of the thermistors due to switch 26 may be replaced by an equal change of temperature of both thermocouples or an equal change of gas flow over them. The bridge and its component thermistors may be part of a gas chromatographic analyser.
Patent GB-519409-A (GB)
Title: Improvements in or relating to the hot rolling of steel
IPC: B21B45/00
Filed: 1939-03-31
Abstract: 519,409. Rolling, SOC. DES ACIERIES & FORGES DE FIRMINY. March 31, 1939, No. 10188. Convention date, April 7, 1938. [Class 83 (iv)] Thin strip metal is rolled in the hot state at a very slow speed. The reduction may be effected at a single pass. The strip passes from a reel 9 through a pair of rollers A that serve only as contacts for supplying heating current, the other contacts being the working rolls B. The mill and also the reeler 10 are insulated. Adjustable guides 8 (not shown) with insulated contact portions engage the strip laterally. The heating may be effected by induction or by a continuous furnace arranged in proximity to the mill. The rolls are cooled by tanks 6, 7 supplied by a variable delivery pump. Rolling speed of 13À5 metres per minute is instanced for a cross-section of 42 by 2À8 mm. For rolling at 1,100‹C. 1,900 amps. are employed the distance between A and B being 5À5 metres, and the thickness of the strip being reduced to 0,7 mm. Rolling may take place at a temperature as low as 650‹C.
Patent GB-871654-A (GB)
Title: Improvements in or relating to shirt collars
IPC: A41B3/00
Filed: 1958-03-31
Abstract: 871,654. Shirt collars. KONDO FUHAKU KABUSHIKI KAISHA. March 31, 1958 [April 3, 1957], No. 10191/58. Class 141 A resilient stiffener 6 of substantially the same shape as the turn-down portion of a shirt collar 4 is inserted through a slit 5 at the collar fold line. The slit does not extend into the end zones of the collar. The stiffeners may be coloured so that it shows through the facing ply 3. The stiffener may be made of cellulose, polyethylene, polyvinyl chloride, a polyester, or polyvinylidene chloride, while the shirt itself may comprise a polyamide, polyethylene terephthalate or polyacrylonitrile.
Patent GB-1184292-A (GB)
Title: Free-Running Pentaerythritol Tetranitrate
Inventor: THOMAS HUGH
IPC: C06B25/32
Filed: 1968-03-04
Abstract: 1,184,292. Pentaerythritol tetranitrate. IMPERIAL CHEMICAL INDUSTRIES Ltd. 24 Feb., 1969 [4 March, 1968], No. 10287/68. Heading C2C. [Also in Division C1] Free - running pentaerythritol tetranitrate (PETN) crystals are prepared by co-precipitation of PETN with at least 0À175% by weight of di-pentaerythritol hexanitrate (di-PEHN). Crystals containing up to 0À5% of di-PEHN are precipitated by dissolving PETN and di-PEHN in acetone and diluting with water. The modified PETN is suitable for use in detonating fuse cord.
Patent GB-490779-A (GB)
Title: Improvements in or relating to liquid pressure systems for power transmission
IPC: B60T11/22
Filed: 1937-04-10
Abstract: 490,779. Hydraulic transmission of power. AUTOMOTIVE PRODUCTS CO., Ltd., and BROCK, D. T. April 10, 1937, No. 10297. [Class 69 (ii)] [Also in Group XXXIV] In hydraulic transmission, particularly for brakes, in which the master cylinder 1 is connected to the reservoir 2 by a valve 16, closed by the initial brake application movement of the brake piston 4, the .stem 17 of the valve passes through a rubber sleeve 22 distortion of which accommodates the movement of the stem. The piston-rod 5 of the brake piston closes the valve 16 by means of an arm 18 and spring 25 and opens the valve by engagement of the arm 18 with a collar 27 on the end of the valve stem. In a modification, a collar on the valve stem engages the rubber sleeve so that the valve is held off its seat by the resilience of the rubber sleeve which is distorted to allow the valve to close. The valve is also shown seating on a rubber seat and also a ball valve is shown operated by the flat end of a stem.
Patent GB-720890-A (GB)
Title: Dropping device for bottles
IPC: B65D47/18
Filed: 1953-04-16
Abstract: 720,890. Drop delivering stoppers. FARBWERKE HOECKST AKT.-GES., VORM. MEISTER, LUCIUS, & BRUNING. April 16, 1953 [April 19, 1952], No. 10484/53. Class 125 (3). A drop delivery device for bottles &c. has a cupshaped insert 3 with a flange 9 and surrounded by a packing ring 4, and a dropping rod 6, projecting vertically upwards from the centre of the base 5 of the insert 3, having a groove 7 and flat upper end, the groove 7 terminating in an outlet opening 8 in the base 5. The upper portion of the rod 6 is enclosed by a removable stopper 10 which is inserted between the rod and the inner wall of the insert 3 and has an annular shoulder 12 arranged so that when the shoulder rests on the flange 9 the lower end of the stopper closes outlet 8. The insert 3 is held on the bottle neck 1 by a sealing ring 14.
Patent GB-1417513-A (GB)
Title: Method and apparatus for butt joining abutting adges of one or more cut-out pieces of material in a threedimensional mould
IPC: A43D8/04
Filed: 1973-03-05
Abstract: 1417513 Seaming non-metallic sheet material BIMA MASCHINENFABRIK GmbH 5 March 1973 [7 March 1972] 10559/73 Heading B5K Apparatus for joining abutting edges 24 of at least one weldable sheet 1, e.g. to form the toe cap of a shoe or ski boot, comprises a convex three-dimensional lower mould 4 having a lower electrode 7, a concave upper mould 5 corresponding in shape to the mould 4 and having an upper electrode 8 corresponding in position to the electrode 7, means for lowering the mould 5 on to the mould 4, and a device 26 for supplying a plastics reinforcing band or strip 27 between the electrode 8 and a sheet 1 located on the electrode 7. As shown in Fig. 5, the moulds 4, 5 each comprise two halves 10, 9 between which the electrodes 7, 8, respectively, lie. The electrode 8 is slidable in a direction X-X with respect to the halves 9 and defines a channel 16 in the mould 5 in the inoperative position. The mould 5 is urged towards the mould 4 by springs 11 the force of which is adjustable by screws 12. In an insertion opening 17 for the sheet 1, Fig. 6, a projection 19 is provided on the end face 18 of the electrode 8 to assist precise introduction of the sheet 1 and centre the abutting edges 24, Fig. 1. Ribs 21, equally spaced from the position of the butt joint to be formed, are provided on the electrode 7. In use, the flat sheet 1 is pushed into the opening 17 and on to the mould 4 so that it becomes three-dimensionally shaped and the edges 24 are abutted. A reinforcing band 27 is fed by a device 26 to overlie the abutting edges. The electrode 8 is moved downwards, the band 27 is cut off, and welding is effected. The electrode 8 may have a ribbed lower surface to form a ribbed pattern on the joint.
Patent GB-424384-A (GB)
Title: Lawn edge cutter
IPC: A01G3/06
Filed: 1934-04-09
Abstract: 424,384. Lawn-trimmers. TOLE, K., 3, Priory Street, and BALLS, A. H. DALBY-, Two Elms, Chicheley Street, both in Newport Pagnell, Buckinghamshire. April 9, 1934, No. 10606. [Class 6 (ii)] In a lawn-edge trimmer comprising a fixed blade and a pivoted blade operated by a crank or eccentric driven from a roller, the connecting-rod F through which the movable blade A is driven from the crank or eccentric E is connected to the upper part of a crank arm Q projecting upwards from the movable blade A, and made integral with it or rigidly fixed to it. A small detachable curved guide may be secured on the front end of the fixed blade B to prevent it from digging into curved. lawn edges. The crank shaft J is driven from internal gearing in the roller D. The blades A, B are held in contact by a spring surrounding the pivot pin.
Patent GB-498977-A (GB)
Title: Improvements in or relating to hot water apparatus
IPC: F24H1/20
Filed: 1938-04-07
Abstract: 498,977. Electric water heaters. KONINKLIJKE FABRIEK INVENTUM N. V. April 7, 1938, No. 10693. Convention date, April 13, 1937. [Class 39 (iii)] Hot water apparatus for connection to a pressure conduit comprises a hot water tank without an air vent, in which an inner vessel 7 containing an electric heater 8 is arranged, the vessel being closed at the top by a cap 12 in which a space 11 forms an air lock communicating by a tube 10 with the inner vessel, the cap having slits or apertures 14 near the bottom, so that on filling the tank by a pipe 4, water under pressure flows into the inner vessel and compresses air therein, some of the air escaping each time pressure is released at the water outflow tube 5, until finally enough air remains in the cap 12 to form an air lock. The - top of the inner vessel has an upstanding rim 13. Specification 455,250 is referred to.
Patent GB-1011919-A (GB)
Title: Improvements in or relating to the attachment of elastic webbing
IPC: B29C65/00
Filed: 1961-03-24
Abstract: 1,011,919. Thermoplastic welding. W. A. BROOKES, and A. D. FARMER. March 26, 1962 [March 24, 1961], No. 10806/61. Heading B5K. Elastic webbing is attached to an article, other than a sanitary, surgical or medical article of wearing apparel, or to itself by means of plastic welding, i.e. by applying pressure and heat to articles having a thermoplastic content. The webbing preferably incorporates thermoplastic yarn, e.g. of nylon or P.V.C., which yarns form the covering of the elastic threads in the webbing. To join the webbing to an article or to itself it is pressed thereagainst by heated dies so that the thermoplastic yarns soften and subsequently form a joint. High frequency electronic heating may be employed. In another method a thermoplastic interlayer is placed between the surfaces to be joined in which case no thermoplastic yarns need be incorporated in the webbing. The pressing device is preferably arranged so that the loose thread ends in the web are embedded in the thermoplastic material while it is softened. This method of welding may be used when attaching fastenings (e.g. suspenders) or elastic belts or straps to underclothes.
Patent GB-700709-A (GB)
Title: Method of stretch-bending sheet metal and device therefor
IPC: B21D11/02
Filed: 1951-05-08
Abstract: 700,709. Bending. SOC. NATIONALE DE CONSTRUCTIONS AERONAUTIQUES DU SUD-EST. May 8, 1951 [May 15, 1950], No. 10819/51. Classes 83 (2) and 83 (4) A method of stretch-bending a sheet metal blank comprises first subjecting the blank to a stress uniformly applied along the longitudinal centre line so that it becomes bowed, within its elastic limit, between spaced curved members having the contour of the upper edges or longitudinal trim lines of the required final stamping, then marking on the preliminarily deformed blank lines which show the position of the said members and finally releasing this stress and clamping the blank in a press along the thus marked curved lines and shaping the blank by a plunger having the shape of the required final form. A form 25 similar to the required final form of the metal sheet is supported in a device comprising a rectangular bottom frame 16, Fig. 5, uprights 17 and transverse end members 18. A longitudinal beam 19 has lateral slideways 20 and transverse beams 21, 22 have upper slideways 23, 24. The form 25 rests at its ends on adjustable supports 28, 29 carried by the slideways 20 and along each side of the form are beams 30 adjustably supported between the beams 21, 22. Each beam 30 carries adjustable members 32 each having an end groove in which a continuous bead 33 is located in contact with the sides of the form 25. The form is then removed and a sheet of metal placed on the frame and held down by a bar 35 on to the supports 28, 29 as shown in Fig. 7, the effect on the sheet being such that it is not permanently bent. Lines are then drawn on the blank in the position of the beads 33 and the angles through which the longitudinal edges of the sheet must be bent at various points to bring them into a horizontal plane are determined. The blank is removed from the frame, placed on a wooden device 39 and its longitudinal edges bent to the thus determined angles over bevels 40 as illustrated at 51 in Fig. 9, to form a flange. The blank is then ready to be placed in the press. During the bending operation, the edges of the blank are held by grooved supporting members 2 Figs. 1 and 2, groups of three such members being mounted on blocks 13 displaceable as required on the bed of the press. A steel wire 1 is supported in the front grooves 3 of the members 2 and ribbed rollers 6 and 7 in the other grooves of each member. Rubber pads 10 in jaws 9 press the blank firmly on to the wire and rollers during the descent of the plunger 12. After the deformation of the blank bv the plunger, the flanges are cut off. The method may be used for the production of fuselage elements for aircraft.