baber/WOPTO huggingface dataset:
Patent GB-1090748-A (GB)
Title: Method and apparatus for welding spaced metal elements to an elongated metal member
IPC: B23K13/00
Filed: 1965-05-06
Abstract: 1,090,748. Making barbed wire; tubes; racks; ratchets; sprocket chains; welding by pressure. AMERICAN MACHINE & FOUNDRY CO. May 6, 1965 [May 7, 1964], No. 19106/65. Headings B3A and B3R. In welding a succession of metal elements to an elongated metal member at spaced-apart positions, the member is advanced longitudinally past a weld point, the elements are advanced into contact with the member, a pulse of highfrequency current is caused to flow along on the opposed surfaces of the member and each element and the member and each element are forced together. In an embodiment a tube 10, Fig. 1, is advanced by rollers 11, 12 past a weld point w and rollers 13, 14 at opposite sides of the point w force the tube 10 and a succession of lugs 15 into welding engagement. The lugs 15 slide down a trough 18 and are urged by air jets from a nozzle 20 into slots 19 in the roller 13, a permanent magnet 22 in the base of each slot holding the lug until welded. High-frequency current supplied by an oscillator is connected to contacts 26, 27 which engage on opposite sides of the V-shaped gap which occurs between each of the lugs and the tube in advance of the weld point. Welding takes place over a small central portion of each lug 15 but current is switched on prior to the start of welding to permit preheating. The tube 10 may be replaced by a rod. In a modification a wire 40, Fig. 4, is advanced by pairs of rollers 41, 42 past a weld point w where rollers 43, 44 bring successive barbs 45 into welding engagement with the wire-a groove 46 is formed in the periphery of the roller 44 and receives barbs from a feed trough 48, permanent magnets 47 holding the barbs in place. High-frequency current from an oscillator is supplied by contacts 26<SP>1</SP>, 27<SP>1</SP> to flow along the gap between each barb and the wire and one contact may be applied to barbs or to the roller 4. The Specification refers to producing steel boiler tubes with welded steel lugs or racks, ratchets, sprocket chains, &c.
Patent GB-1104373-A (GB)
Title: Improvements in or relating to cells with bipolar electrodes
Inventor: ADAMSON ALAN FEATONBY
IPC: C25B9/17
Filed: 1964-05-08
Abstract: <PICT:1104373/C6-C7/1> In a cell for the electrolysis of sea water to produce hypochlorite for cooling purposes in power stations, a plurality of parallel bi-polar electrodes 20 supported along two parallel edges by slots in a casing 23 have insulating extender plates 24 of electrolyte resistant material e. g. polymethylmethacrylate secured to the opposite edges to prevent corrosion, to increase the current leakage path between cells, and to guide the circulating electrolyte.  The extender plates diverge outwardly from the electrodes so that electrolyte circulated through the cells from inlet 25 to outlet 26 is speeded up through the cells. With the inlet and outlet horizontal, the cell is inclined to the vertical so that the extender plates reduce turbulence.  Sewage may be mixed with sea water for treatment in the cell.
Patent GB-974373-A (GB)
Title: Improvements relating to dyestuffs of the dioxazine series and their use
IPC: C08K5/35
Filed: 1962-05-18
Abstract: In examples, 2:5-dibromo-3:6-dianilido-1:4-benzoquinone is made by oxidizing 2:5-dibromo-3:6-dianilido-1:4-dihydroxybenzen prepared by demethylating with aluminium chloride 2:5-dibromo-3:6-dianilido-1:4-dimethoxybenzene; and the corresponding 2:5-dichloro-compound is similarly obtained.  In further examples, the methyl, isopropyl, isobutyl and n-octyl esters of 2:5-dibromo-3:6-dicarboxy-1:4-benzoquinone and the ethyl and butyl esters of 2:5-dichloro-3:6-dicarboxy-1:4-benzoquinone are made by halogenating the corresponding 2:5-dihydroxy-terephthalic esters, and the ethyl ester of 2:5-dibromo-3:6-dicarboxy-1:4-benzoquinone is prepared by brominating succinylosuccinic acid diethyl ester and oxidizing with nitric acid in ethanol.ALSO:In examples, (30) a red polyvinyl chloride film is made by mixing polyvinyl chloride, dioctyl phthalate, dibutyl tin dilaurate, titanium dioxide and pigment of the formula <FORM:0974373/C3/1> and working on mixing rollers; and (31) a red lacquer is made by milling titanium dioxide, a 60% solution of a modified urea-alkyd resin in xylene/butanol 1:1, terpentine oil, xylene and a pigment of the formula <FORM:0974373/C3/2>ALSO:The invention comprises pigments of the formula <FORM:0974373/C4-C5/1> which are free from sulphonic acid groups, in which formula Ar11 and Ar21 are each a residue of an arylene radical attached to the N and O atoms and which may contain other substituents and fused heterocyclic rings, and X is a primary, secondary or tertiary amino group or the group -OR where R is an aliphatic, cycloaliphatic, araliphatic or aromatic radical.  The pigments are made by ring-closing a compound of the formula <FORM:0974373/C4-C5/2> wherein Ar1 and Ar2 are each an aryl radical containing hydrogen or an ether, thioether or hydroxy group in o-position to the -NH- group and which may contain other substituents and fused heterocyclic rings and wherein X is as above, or by saponifying a compound of the formula <FORM:0974373/C4-C5/3> wherein Ar11, Ar21 and R are as above, to form the corresponding dicarboxylic acid, converting this to its dicarboxylic acid chloride and reacting the latter with ammonia, a primary or secondary amine or an aliphatic, cycloaliphatic, araliphatic or aromatic alcohol. Examples are given. The pigments are obtained in red, orange, bordeaux, blue and violet shades.  In an example (29) a violet colour paste is made by mixing and rubbing on rollers aluminium hydroxide, linseed oil varnish of medium viscosity, cobalt linoleate and a pigment which is 2: 6-diacetylamino-3: 7-diethoxy-9: 10-di(methoxycarbonyl)-triphendioxazine.
Patent GB-688102-A (GB)
Title: Improvements in and relating to luminaires
IPC: F21V7/04
Filed: 1951-08-15
Abstract: 688,102. Lighting fittings. BRITISH THOMSON-HOUSTON CO., Ltd. Aug. 15, 1951 [Aug. 16, 1950], No. 19254/51. Classes 75(ii) and 75(iv) A luminaire employing elongated tubular lamps has an elongated reflector 17 of uniform curved transverse section with an open front face which is closed by a transparent cover plate 19, the adjacent longitudinal edges of the reflector 17 and cover 19 being connected in tongue-and-groove fashion with longitudinally slotted elongated connecting bars 21, 22 arranged therebetween. As shown a street lighting unit comprises two luminaires 10, 11 supported in horizontal mutually inclined back-to-back relation on a post 14, each to project a wide beam of light unilaterally along and obliquely across a road. Each luminaire comprises a reflector 17 of generally spiral cross-section and formed in two halves connected by a grooved strap 18, clamped between two recessed lampsupporting end plates 20 by tie rods 21, 22, 23. The tie rods 21 and 22 are longitudinally slotted to receive the upper and lower edges respectively of the reflector, additional slots in the rods 21, 22 receiving the longitudinal edges of a one-piece transparent cover 19. The upper edges 17a of the reflector has an inturned re-entrant lip which bears on a downwardly sloping surface 21b of the rod 21, the latter interlocking with the edge of the lip. The spiral section of the reflector 17 is made up of a lower rear parabolic portion opposite the front plate 19 and an upper elliptical portion extending to overhang the front 19. The parabolic portion has a focal line Fo and an axial plane directed at 15 degrees below the horizontal, and the upper elliptical portion comprises a number of elliptical sections 1-5 each with a primary focal line coincident with Fo and having secondary focal lines F<SP>1</SP>-F<SP>5</SP> respectively parallel wtih but spaced behind or above line Fo. With this arrangement lights from a tubular lamp 28 centred on Fo provides a concentrated beam at an angle of 15 degress below horizontal and some illumination below the beam towards nadir, and no reflected light is directed through the tubular lamp. If desired a second lamp 29 may be mounted above and behind lamp 28 to increase the amount of light provided below the main beam. To provide access to the lamps a hinged cover is provided on one of the end plates 20.
Patent GB-1064276-A (GB)
Title: Improvements in or relating to vinyl fluoride production
IPC: C07C17/25
Filed: 1964-05-08
Abstract: Vinyl fluoride monomer is prepared by (a) contacting acetylene and hydrogen fluoride in a reaction core in the presence of a hydrofluorination catalyst for a time sufficient to form a 1,1-difluoroethane product, and (b) contacting the 1,1-difluoroethane product with acetylene at elevated temperature in the presence of a catalyst for a time sufficient to form a vinyl fluoride monomer product.  The catalyst in step (a) comprises fluorosulphonic acid in which is dissolved the reaction product of fluorosulphonic acid and an anhydrous metal chloride. The catalyst in step (b) comprises partially-hydrated aluminium fluoride containing less than 1% by weight moisture.  The crude vinyl fluoride product may be purified by the process described in Specification 1,064,278.
Patent GB-1038672-A (GB)
Title: Improvements in electrical signalling systems
Inventor: BARRETT JOHN ALBERT
IPC: H04B17/40
Filed: 1963-05-15
Abstract: 1,038,672. Testing repeaters. BRITISH TELECOMMUNICATIONS RESEARCH Ltd. May 11, 1964 [May 15, 1963], No. 19344/63. Headings H4L and H4R. In a signalling system, Fig. 2, which is particularly suitable for pulse transmission, having separate send and receive paths employing a plurality of repeating stations SRI to SRN and RRI to RRN, which are fed with D.C. power in series from a terminal station T, when the system is not energized the send and receive paths are connected together at each repeater station by relay contacts AL, and each repeater station includes a device responsive to a momentary increase in feed current whereby the connection between the send and receive paths at the corresponding repeater station is broken and power is supplied to the succeeding repeater station. At the terminal station T a rotary switch S connects up in turn Zener diodes MR21 to MR25 as voltage limiters and in each position a switch MS is operated to connect timing equipment MS to control the constant current generator CG to increase the feed current for a short time to energize the corresponding repeater station. The Zener diodes may be replaced by a chain of diodes with the switch S connecting in turn to different junctions in the diode chain. During the operation of energizing the repeater stations a test signal is applied to the send path which will be returned to the terminal station via the successive loops, the receiver operating an alarm if the response is unsatisfactory. Alternate repeater stations may be arranged to switch automatically a predetermined time after current is supplied to them. In a repeater station, Fig. 1 (not shown), the sending repeater is powered from across the Zener diodes MR1 ... MRX and the series circuit from the terminal station initially also includes resistor RI, the receive repeater being similarly connected across Zener diodes in the return line. When the station is powered initially the voltage drop across resistor RI and diodes MR1 ... MRX is less than the Zener voltages of Zener diodes MR11 and MR12 so that diode MR10 is back-biased and insufficient current flows to operate relay AL. If a small increase in the feed current is made, diodes MR11, MR12 will conduct and relay AL will operate to disconnect the shunt across the signalling paths and to apply a potential via resistor R2 so that transistor VT conducts. Nearly all the feed current now flows through transistor VT and maintains relay AL operated, and diode MR10 is conductive so as to pass most of the current for operating the repeater. When the feed current is reduced to its normal value the relay AL will remain operated to permit power to be extended to the next station.
Patent GB-387685-A (GB)
Title: Improvements in or relating to the treatment of metals or alloys, and to the products obtained thereby
IPC: C22B9/10
Filed: 1931-07-04
Abstract: Molten metals and alloys, such as iron, copper and nickel, and their alloys, are treated in a molten state with an alloy containing lithium and one or more of the metals sodium, potassium, calcium, strontium, barium, cerium, thorium, and lanthanum.  Up to about 2 per cent of the lithium alloy may be used, and it may be added in the form of a solid body or block to the molten metal or alloy which is stirred to effect distribution. Specific treatments of cast iron, steel, nickel-chromium steel, copper, nickel, and a copper-nickel alloy, are referred to.
Patent GB-505327-A (GB)
Title: Improvements in and relating to water tube steam boilers
IPC: F22B21/34
Filed: 1938-06-29
Abstract: 505,327. Water-tube steam boilers. BAUER, G. June 29, 1938, No. 19351. [Class 123 (ii)] In a water - tube. steam boiler as claimed in Specification 458,372, a feedwater heater t located behind a superheater p lies in front of the downcomer tubes o leading from the upper drum i to the intermediate drum d. Or the tubes o may lie between feedwater stages or independent heater units; they may extend in a parallel, inclined or diagonal direction through a unitary heater.
Patent GB-687300-A (GB)
Title: New azo dyestuffs
Inventor: MENDOZA MORDECAI
IPC: C09B33/04
Filed: 1950-08-03
Abstract: The invention comprises disazo dyestuffs obtained by coupling (acid) one mol. of a diazotized arylamine (benzene or naphthalene) mono-sulphonic acid with one mol. of resorcinol, and then coupling (alkaline) the product with one N- (o- or p-aminophenyl)-morpholine. The products dye leather in brown shades.  Examples are given where the first component is sulphanilic acid, naphthionic acid and 3-amino-6-hydroxy-5-sulphobenzoic acid.
Patent GB-692360-A (GB)
Title: Improvements in the production of sulphonyl isocyanates
Filed: 1950-08-03
Abstract: Sulphonyl isocyanates are produced by a process which comprises reacting phosgene at temperatures above 160 degrees, especially between 200 DEG  and 250 DEG  C. with sulphonamides of the formula R-SO2NH2, wherein R is an aliphatic, cycloaliphatic, p  araliphalic, aromatic or heterocyclic group wherein the hetero atoms are inert to phosgene and which are free from other groups which might react with phosgene.  Starting materials mentioned include sulphonamides wherein the -SO2NH2 group is attached to a hydrocarbon radical such as a straight or branched chain aliphatic hydrocarbon radical containing from 3 to 24 carbon atoms on an aromatic mono- or polynuclear hydrocarbon radical such as phenyl, tolyl or naphthyl.  Alicyclic and araliphatic hydrocarbon radicals may be present.  The radical attached to the -SO2NH2 group may also contain inert substituents such as tertiary amino groups, keto groups or ether or thioether groups.  Heterocyclic sulphonamides wherein the hetero-atoms are inert, e.g. as in the furan, thiophen or pyridine nuclei, may also be used.  The reaction is preferably carried out by leading phosgene into the liquid, molten, dissolved or suspended sulphonamide and as inert solvents or diluents may be used high-boiling hydrocarbons, aromatic chlorhydrocarbons or nitrohydrocarbons.  In examples: Phosgene is led into a boiling solution of p-toluene sulphonamide to obtain p-toluene sulphonyl isocyanate, o-toluene sulphonyl isocyanate, phenyl sulphonyl isocyanate or its substitution products, e.g. the halogen or alkoxy derivatives or the corresponding naphthalene, diphenyl, pyridyl, thienyl or anthraquinone derivatives being obtained in a similar manner (1); a mixture of aliphatic sulphonamide compounds, having an average chain length of 14-15 carbon atoms and a nitrogen content of about 5.4 per cent (obtainable by reacting a mixture of chlorine and sulphur dioxide with an irradiated benzine fraction of boiling range between 180-200 DEG  C. and passing ammonia into the sulphonyl chloride mixture obtained) is diluted with trichlorobenzene, or a benzine fraction of boiling point about 210 DEG  C., is treated with phosgene.  The product reacts with water, alcohols or amines.  Cyclohexyl or cyclopentyl isocyanates can be obtained in an analogous fashion by reacting cyclohexyl or cyclopentyl sulphonamides with phosgene (2) and b -anthraquinone sulphonamide is suspended in boiling trichlorobenzene or nitrobenzene and phosgene is passed in (3).  The product may be further reacted in the resulting solution, e.g. on heating with aniline N1-b -anthraquinone-sulphonyl-N-phenyl urea is obtained.
Patent GB-703943-A (GB)
Title: Improvements in differential hydro-pneumatic shock-absorbers, particularly for vehicles
IPC: F16F9/06
Filed: 1951-08-17
Abstract: 703,943. Hydro - pneumatic shock absorbers. MERCURIALI, A. Aug. 17. 1951 [Aug. 26, 1950], No. 19459/51. Class 108(3) A shock absorber comprises a pneumatic cylinder A and hydraulic cylinder B having pistons A<1> and B' of different diameters rigidly connected, the cylinders A and B communicating through a non-return valve 24 for oil flow in one direction, and through an adjustable orifice 22 for flow in the opposite direction, and a calibrated orifice 42 being disposed between the cylinder B and the atmosphere. Correct alignment of the cylinders A, B, is provided by the clamping action of the lower cylinder head 6, acting through a packing ring 10 interposed between flanges 12, 8 on the bases of the respective cylinders. The valve 24 is a spring-loaded flap valve within the piston B1 and has a central orifice 22 which is obturated by a metering rod 14. The degree of metering is adjusted by the action of a set screw 20. An elastic ring 30 forms the abutment of the loading spring 28 of the valve 24. The device is filled with liquid to the level shown, and in use the eye 2 of the piston rod C, is connected to the vehicle wheels, and the eye 4 to the frame. Thus when the wheel rises, the piston A1 rises and compresses air in the chamber 34 of the cylinder A. On rebound liquid damping occurs through the orifice 22.
Patent GB-481666-A (GB)
Title: Improvements in or relating to free-piston compressors
IPC: F02B75/02
Filed: 1936-07-13
Abstract: 481,666. Air compressors. PESCARA, R. P. July 13, 1936, No. 19474. Convention date, July 13, 1935. [Class 8 (i)] In a free-piston air compressor having an even number of stages asymmetrically arranged, the pneumatic forces on the pistons are balanced by a piston attached to the L.P. stage piston and exposed to a constant air pressure. In a two-stage construction the compensating piston 5, attached to the L.P. piston 3<1>, is exposed to the delivery pressure of the H.P. cylinder 4<2>. The air inside the casing 9 may be used for scavenging. Specification 481,595 is referred to.
Patent GB-274895-A (GB)
Title: Improvements in or relating to electric transformers
IPC: H01F38/28
Filed: 1927-07-22
Abstract: 274,895. International General Electric Co., Inc., (Assignees of Allgemeine Electricitõts-Ges.). July 23, 1926, [Convention date]. Transformers.-A current transformer has its apparent internal resistance made to vary with the primary current so that the magnetizing current is proportional to the primary current and discrepancies between the primary and secondary current can be rendered constant or eliminated. The primary conductor a of a current transformer passes through two identical cores b, c, the secondary winding d on the core c comprising fewer turns than the winding e on the core b with which it is in series, the apparent resistance of the windings being great as compared with that of the external secondary load. The secondary current will be of such a magnitude that the secondary ampere turns affecting the core b will be greater than the primary ampere turns, the opposite being the case as regards the core c, so that the core b will act as an inductive load upon the core c, its apparent resistance varying with variations in the primary current.
Patent GB-1188561-A (GB)
Title: Improvements relating to Joining Metals by Brazing
Inventor: BEAUMONT ROBERT PETER
IPC: H05K3/32
Filed: 1966-05-03
Abstract: 1,188,561. Brazing. BRITISH AIRCRAFT CORP. Ltd. 3 Aug., 1967 [3 May, 1966], No. 19512/66. Heading B3R. A "Kovar" (Trade Mark) conductor 2, Fig. 1, is brazed to a copper conductor 1, by placing a composite layer 3 of copper 3a, and silver 3b, between the conductors, passing an electric current between the electrodes so as to melt the layer, and placing a pressure member on the conductor 2. In a modification, conductor 2 is first coated with copper 3a, and then with silver 3b, Fig. 2, and the electrodes are placed on the coated conductor 2. A copper-silver laminate may be wrapped around the conductor in place of the coating. The layer may be silver alone, or an alloy of silver with zinc, tin, or cadmium and gold.
Patent GB-1268635-A (GB)
Title: Capsules for marking objects
Inventor: GRAINGER NORMAN
IPC: F42B12/40
Filed: 1968-04-25
Abstract: 1,268,635. Marking trees. R. P. SCHERER Ltd. 31 March, 1969 [25 April, 1968], No. 19688/68. Heading A1X. [Also in Divisions B8 and F3]  A marking projectile for firing from a gun comprises a gelatine capsule plasticized with not more than 30% by weight of plasticizer, based on the weight of gelatine and plasticizer, and containing from 0.25 to 1.25cc of a pigmented marking liquid, which capsule on impact with an article will rupture and mark the article with marking liquid. The plasticizer comprises propylene glycol, diethylene glycol, hexanetriol and sorbitol. The capsule may be spherical or oblong with a diameter of 0.25 to 0.75" and in the case of an oblong can have a length of 0.75 to 1.25". The capsule can be used for marking trees to be chopped down.
Patent GB-1525418-A (GB)
Title: Alkoxy titanate salts
IPC: C08L7/00
Filed: 1976-05-13
Abstract: 1525418 Organotitanates KENRICH PETROCHEMICALS Inc 13 May 1976 [15 May 1975 30 Sept 1975] 19696/76 Headings C2C and C2P [Also in Divisions C1 and C3] The invention comprises organotitanates of general formulae (RO) z Ti(A) x (B) y , (RO)Ti(D) 3 , (RO) z Ti(OSO 2 R<SP>11</SP>) x (B) y  and (RO)Ti(OCOR<SP>1</SP>) p - (OAr) q ; R is a monovalent alkyl, alkenyl, alkynyl or aralkyl group having from 1 to 30 carbon atoms or a substituted derivative thereof; A is thioanoxy, sulphinic, diester pyrophosphate, diester phosphate, or a substituted derivative thereof; B is OCOR<SP>1</SP> or aroxy; R<SP>1</SP> is hydrogen or a monovalent organic group having from 1-100 carbon atoms; R<SP>11</SP> is an amino-substituted or alkyl-substituted aryl group, the alkyl group having 5-24 carbon atoms; x + y + z = 4; x and z may be 1, 2 or 3 and y may be 0, 1 or 2; p+q=3; q may be 1, 2 or 3 and p may be 0, 1 or 2. The compounds of the invention may be used to treat the surface of comminuted inorganic materials or added with such materials to polymers.
Patent GB-219503-A (GB)
Title: Improved combination extending length measuring bars or gauges
IPC: G01B3/04
Filed: 1923-08-01
Abstract: 219,503. Brookes, A. J. C. Aug. 1, 1923. Linear - dimension gauges.-Com prises a set of length measuring bars, with means at one end o each bar for con necting them together in pairs in order to form a composite measuring bar of required length. Fig. 1 shows a composite bar five units in length made up of two bars of one and four units respectively. The outer ends b are flat and parallel, and the inner ends are joined by a screw a. A series suitable for giving composite bars for all sizes between 2 and 39 units consists of bars of the following lengths, viz., 1, 1, 2, 3, 4, 5, 6, 7, 8, 15, 23, and 31 units. The sizes are compared against a standard and adjusted in combinations of two bars, so that the distortional effect of the joint is included. Only eleven comparisons with true standards are necessary in this series, which enables measurements of 38 separate sizes to be made. Specifications 166,248 and 186,149, [Class 60, Grinding or abrading &c.], are referred to.