baber/WOPTO huggingface dataset:
Patent GB-1067597-A (GB)
Title: Chlorinated ethylene derivatives
IPC: C07C21/04
Filed: 1965-05-11
Abstract: A continuous process for the production of chlorinated ethylene derivatives using two successive reaction zones, the first a thermal chlorination and dehydrochlorination zone and the second a catalytic oxychlorination zone, comprises (a) introducing into the first zone x moles/hr. of chlorine, y moles/hr. of ethane, u moles/hr. of chlorinated ethane derivatives and v moles/hr. of ethylene and/or chlorinated ethylenes, the first zone being brought to a temperature from 400-650 DEG  C. and the feeding of the reagents being carried out in such a way that the ratio u/(x+y) is from 0.5 to 1.5, v/u does not exceed 4, v/y does not exceed 10, x/(y+v) does not exceed 3.5 and the contact time in the first zone does not exceed 25 seconds which corresponds to a space velocity of at least 40 h-1; (b) continuously treating the effluent of the thermal zone so as to constitute two fractions, one of which is free of hydrogen chloride, hydrochloric acid and ethylene and represents the product of the process, and the other of which contains the total hydrogen chloride, hydrochloric acid and ethylene present in the effluent together with chlorinated ethylene derivatives; (c) introducing the latter fraction into the said second zone together with molecular oxygen or a gas containing molecular oxygen, the amount of oxygen introduced being 5-20% of the volume of this latter fraction taken in the vapour state, and maintaining the reagents in the second zone for 1-25 seconds at a temperature from 200-400 DEG  C; (d) collecting, at the outlet of the second zone, a mixture mainly comprising in its organic phase chlorinated ethane derivatives; and (e) advancing at least a portion of this organic phase to the first zone in order to adjust the contents to u moles of chlorinated ethane derivatives and v moles of ethylene and/or chlorinated ethylenes.
Patent GB-1011858-A (GB)
Title: Improvements in or relating to a process and an apparatus for manufacturing rubber driving belts
IPC: B29D29/08
Filed: 1962-05-24
Abstract: 1,011,858. Moulding rubber belts; laminates. PIRELLI, S.p.A. May 24, 1962 [Aug. 5, 1961], No. 19950/62. Headings B5A and B5N. [Also in Division F2] In a process for the manufacture of toothed rubber belts, a rubberized fabric 21 is disposed on a building drum 9 provided with teeth 11 and preformed structures 10 of extruded rubber are placed on the fabric 21 and pressed into the spaces between the teeth 11. A flexible tape 12 carried on rollers 13 ... 17 maintains the fabric 11 and structure 10 in engagement with the roller 9. A resistant insertion in the form of metal wires 4 is then applied and covered with a rubber layer 7 and the whole subsequently vulcanized in situ on the drum 9.
Patent GB-702566-A (GB)
Title: 12-bromo steroid adducts
IPC: C07J5/00
Filed: 1951-08-24
Abstract: The invention comprises 12-bromo-3-acyloxy-5, 7, 9 (11)-pregnation-20-one adducts of the formula <FORM:0702566/IV(b)/1> wherein Ac is the residue of an unsubstituted organic monocarboxylic acid containing one to eight carbon atoms, inclusive, and wherein A is the adduct radical of maleic acid, maleic anhydride, or a lower-alkyl diester of maleic acid wherein the esterifying groups contain one to eight carbon atoms inclusive and their preparation by mixing together, at a reaction temperature of 25 to 100 DEG C., the corresponding 3-acyloxy-5.  7.  9 (11)-pregnatriene-20-one adduct and about one mole of N-bromosuccimide, in a halogenated hydrocarbon medium, e.g. carbon tetrachloride, and separating from the reaction product the corresponding 12-bromo adduct.  Examples are given of the preparation of 12-bromo-3-acetoxy-5, 7, 9 (11)-pregnatriene-20-one maleic anhydride and dimethyl maleate adducts.  Specification 680,733 is referred to.
Patent GB-905696-A (GB)
Title: Process for the production of zirconium oxide
IPC: C01G25/02
Filed: 1960-06-08
Abstract: Zirconium dioxide of high bulk density is prepared by heating a slurry of a zirconyl nitrate, of formula ZrO(NO3)x where x is 2-10, for at least 10 hours at a temperature of 120 DEG F. at least, thereby forming a thixotropic mixture containing 15 to 70% solids which is then calcined to the oxide.  Hafnium may be present and converted to the oxide with the zirconium.  In continuous operation, a pool of the zirconyl nitrate is initially formed and heated to form a slurry.  Further nitrate is continuously added and removed, the retention time being at least 10 hours.  The slurry removed is filtered and the thixotropic filtercake is dried before being calcined at 1100 to 1500 DEG F.  The bulk density of the oxide produced is generally 90 to 150 lbs./cu. ft. according to an example, zirconyl nitrate produced by dissolving the hydroxide in nitric acid and containing 22% free acid, was evaporated by indirect superheated steam to produce a slurry containing 20% solids by volume after which continuous operation commenced.  The average retention time in the evaporator was about one day.  The filter cake was fed to a rotary kiln operating at 1100 DEG  - 1500 DEG F. and the resulting zirconium dioxide had a bulk density of 90 to 100 lbs./cu foot.  The oxide may be pelletted with carbon and chlorinated.  Preferably the oxide is pelletted with carbon black and an aqueous sugar binder, extruded into 1 inch rods which are calcined at 800 to 1100 DEG F., and crushed to obtain pellets having a bulk density of 65 to 70 lbs/cu. ft. These are chlorinated in a fluidized bed in a stream of oxygen and chlorine at 1,000 to 1020 DEG F.  Solids are separated from the effluent gases in a cyclone maintained at 650 DEG F., and the zirconium tetrachloride product condensed.  Specifications 555,988 and 885,955 are referred to.
Patent GB-1472692-A (GB)
Title: Dry mix organic brake linings
IPC: F16D69/02
Filed: 1975-05-13
Abstract: 1472692 Brake linings GOODYEAR TIRE & RUBBER CO 13 May 1975 [18 Oct 1974] 20071/75 Heading B5A [Also in Division C3] A dry organic mix, which is cured and shaped to form a brake lining, contains a finely divided phenolic resin which has been coated with 1 to 32 parts by weight of a latex before mixing with conventional brake lining materials such as asbestos, barytes, diatomaceous earth graphite bronze powder, silicon carbide, copper sulphide brass chips and iron oxide. Coating latices exemplified are butadiene/ styrene acrylonitrile. The brake lining composition is cured at a pressure of 250 to 50,000 lbs./ sq. inch and a temperature of 275 to 375 F. The linings may be given a post-curing bake.
Patent GB-756626-A (GB)
Title: Improvements relating to refractometers
IPC: G01N21/41
Filed: 1954-07-12
Abstract: 756,626. Refractometers. LKB-PRODUKTER FABRIKSAKTIEBOLAG. July 12, 1954 [Oct. 16, 1953], No. 20293/54. Class 97 (1). A refractometer cell, Fig. 1, has parallel entrance and exit walls for the light, the third of five intermediate walls also being parallel to them. The first and fifth of the intermediate walls are mutually parallel and inclined to the outer walls, the second and fourth being also mutually parallel and being oppositely inclined to the outer walls by an equal amount. Unknown and reference media are placed in alternate prisms so formed. The inclined walls and alternate hollow prisms bounded thereby may be replaced by solid, prisms of a reference medium. A refractometer using this cell is shown in Fig. 2a. The cell F is mounted on a table L pivoted on an axis through the centre of the cell and carrying an inclined mirror G. Light from a source A is concentrated by a condenser B, through a filter C, on to a slit D at the focus of a lens E. The parallel light, after deflection by the cell and reflection by the mirror G is further reflected by a fixed mirror H into a telescope I, K. The table L is turned to align the image of the slit with the telescope cross wire J. For this purpose an arm M integral with the table carries a pin N sliding in a groove P perpendicular to a bar 5 slidable in guides T1, T2. This arrangement ensures that light is incident on the cell F at an angle equal to half the angle of deflection, but of opposite sign, which is the optimum condition of operation for obtaining linearity of deflection as a function of difference of index of refraction between unknown and reference media. Also, the linkage provides that the movement of the bar S is proportional to the sine of half the angle of deflection which is a still more nearly linear measure of the refractive index difference. Two cells F may be used, being adjacent, with outer faces parallel but being oriented to produce opposite deflections, each of half the incident light beam, thereby producing two images of the slit and effectively doubling the deflection produced by a single cell. Alternatively, the deflection may be actually increased by passing the light through a number, e.g. three, of cells in sequence. All the cells are mounted on separate tables separately pivoted on a common axis but geared together to preserve the optimum angle of incidence on each.
Patent GB-744270-A (GB)
Title: Improvements in or relating to devices sensitive to fluid pressure
IPC: G01L1/22
Filed: 1953-07-22
Abstract: 744,270. Measuring fluid pressure. THOMAS. G. B., and RUSTON & HORNSBY, Ltd. July 21, 1954 [July 22, 1953] No 20316/53.. Class 40(1) A fluid - pressure pick-off comprises a tube 11 surrounded by a further tube 16 so as to form a closed annular space between them connected to the bore of tube 11 by an opening 15 in the wall thereof. The inner tube is adapted to be series connected in the pipe line the fluid pressure in which is to be measured, e.g. by nipples 20, 21 at the ends of the outer tube which carries wound about the central thinwalled portion thereof a resistance straingauge 23 protected by a cover 22. The strain-sensitive resistor may be wound iriductively and a temperature compensating winding may be fitted on a part of the pick-off not subject to stress.
Patent GB-937114-A (GB)
Title: Improvements relating to door mats
Inventor: LEES ANTHONY STUART
IPC: A47L23/26
Filed: 1961-06-06
Abstract: 937,114. Coir door mats. H. J. LEES & SONS (LONDON) Ltd. May 15, 1962 [June 6, 1961], No. 20316/61. Class 142 (4). A coir door mat 2 has one or more recesses containing inserts 4 displaying letters, numbers or the like markings. The inserts may be below the surface of the mat and be composed of foamed rubber or synthetic material, wood, wood with a plastics coating or woven coir.
Patent GB-841957-A (GB)
Title: Improvements in vehicle power steering
IPC: B62D5/06
Filed: 1957-06-27
Abstract: 841,957. Vehicle power steering. BENDIX AVIATION CORPORATION. June 27, 1957 [July 18, 1956], No. 20368/57. Addition to 812,827. Class 79(5). The pressure developed in the reaction chambers of the power steering system described in the parent Specification is limited by a single valve member 114 having its movement in opposite directions from a neutral position opposed by separate springs 118, 124. When the pressure developed in, say, the chamber 50, reaches a predetermined value the valve 114 is displaced against the resistance of the spring 124 to prevent further fluid flowing through passages 18, 130, 146, 142 and 134 into the chamber 50. If leakage allows the pressure in the chamber to continue to rise, the valve 114 is dispaced further until the passage 146 communicates with a passage 148 connected to the return line of the system. The springs 118 and 124 may be arranged to compensate for any difference in the areas A1, A2 of the reaction chambers so that the maximum "feel" is the same for either direction of turning. Specification 779,122 is referred to. Reference has been directed by the Comptroller to Specification 713,786.
Patent GB-332721-A (GB)
Title: Improvements in vehicle wheel rims
IPC: B60B25/16
Filed: 1929-07-03
Abstract: 332,721. Marchant, S. B. July 3, 1929. Tyre attachments to rims.-The mating flanges 9, 10 of the parts 6, 5 of a divisible rim are fitted with interengaging taper lugs 13 and slots 13a, respectively, to form a bayonet-joint connection, holes 15 to receive locking set-screws 15<a>, holes 14 to receive bolts for attaching the complete rim to a wheel, and overlapping slots 19, 20 to receive a prizing tool for separating the rim parts.
Patent GB-332048-A (GB)
Title: Improved flux for welding
IPC: B23K35/36
Filed: 1929-07-03
Abstract: 332,048. Reuss, W. Nov. 1, 1928, [Convention date]. Addition to 296,923. Fluxes. - To the flux claimed in the parent Specification consisting of boric acid, borax and caustic alkali are added ammonium chloride, common salt and sulphuric acid. The common salt may be wholly or partly replaced by alkali sulphates or nitrates and the sulphuric acid by other mineral acid, e.g. hydrochloric. Caustic potash 12 grams, boric acid 12 grams, borax 12 grams, common salt 15 grams, ammonium chloride 3 grams and sulphuric acid (66‹ BÚ.) 1 gram constitute a suitable flux for welding aluminium, steel, cast iron, malleable iron, cast steel, grey castings, hardened castings, steel castings, red metal castings, red brass, brass, or copper.
Patent GB-388057-A (GB)
Title: Stain-resisting alloys
IPC: C22C38/58
Filed: 1931-07-18
Abstract: Stain-resisting iron alloys having deep drawing properties contain 16-22 per cent of chromium, 0,25-2,75 per cent of copper, up to 0,3 per cent of carbon, at least 3 per cent of manganese, and at least 2 per cent of nickel, the sum of the manganese and nickel being 6-14 per cent.  The alloys are free from or contain not more than 1 per cent of tungsten and molybdenum.  Alloys containing specified proportions of carbon, chromium, manganese, nickel, and copper within the above ranges, and also some containing no copper, are referred to. Specifications 309,841, 313,471, [both in Class 82 (i), Metals, Extracting &c.], and 361,916 are referred to.
Patent GB-748065-A (GB)
Title: Electric primary cell
Inventor: REID RAYMOND WILSON
IPC: H01M6/04
Filed: 1954-07-14
Abstract: 748,065. Batteries. DOW CHEMICAL CO. July 14, 1954, No. 20606/54. Class 53. A primary cell having a magnesium anode, a carbon cathode and an electrolyte consisting of a solution of a bromide of an alkali metal, alkaline earth metal or ammonium is provided with a depolarizer consisting of a mixture of manganese dioxide, carbon and finely divided aluminium, bismuth, cobalt, nickel, copper, iron, lead, magnesium, manganese, tin or zinc. An insoluble chromate may also be mixed with the depolarizer and a soluble chromate may be dissolved in the electrolyte. Specifications 659,367, 659,368 and 677,416 are referred to.
Patent GB-136262-A (GB)
Title: Improvements in Ploughs.
Inventor: ROSENBERG PAUL HENRIK
IPC: A01B15/08
Filed: 1918-12-11
Abstract: 136,262. Rosenberg, P. H. Dec 11, 1918. Ploughs.-In a plough provided with one or more outwardly inclined rollers to engage the furrow slice, a conical disk is rotatably mounted so as to project through a recess in the landside of the plough in such a way that its apex and lowest point are both contained in a plane parallel to the adjacent face of the plough. In the plough shown, the inclined roller 13 is of concave conical form and is mounted behind an inclined concave disk 11, over part of which a front plate 12 projects. A plate may be provided behind the roller 13 to prevent soil from getting into the plough. The rear part of the plough is carried by a roller 7 provided with a scraper 9. The conical landside disk 17 is inclined so that its outermost radial line is parallel with the side plate 18, through which it projects. The plate 18 acts as a scraper. In a modification, the disk 11 is dispensed with, and the roller 13 is more inclined and is placed farther forward, the plate 12 being replaced by a wider and more inclined plate. The roller 13 may be adjustably mounted so that the plough may be converted from one form to the other.
Patent GB-478967-A (GB)
Title: Improvements in or relating to electric discharge devices
IPC: H01J29/02
Filed: 1936-07-27
Abstract: 478,967. Electron multipliers; cathoderay tubes. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. July 27, 1936, No. 20737. Convention date, July 26, 1935. [Class 39 (i)] A device comprises a mosaic electrode upon which is projected either an optical image or an electron image generated at a photo-electric surface and which is scanned by a cathoderay beam, and air electron multiplier arrangement which receives and amplifies the secondary electrons emitted by the mosaic. In one form, Fig. 2, the mosaic comprises a mica plate 11, photo-electric particles 13 and a back-plate 15. A focusing electrode 19 coated on the limb 3 of the tube containing the gun system 2, 5, 7 serves also to attract photo- and secondary-electrons from the mosaic. These electrons pass into a second limb 23 in which is mounted a multiplier of the kind described in Specification 469,488, having secondary-electron-emissive targets 29, 31, accelerating and focusing electrodes 25, 26, 33, 35, 37, 39 and an output electrode 27. The mode of manufacture of the multiplier is described and includes the step of caesiating the electrodes 31 and the mosaic 11 simultaneously. The limb 23 may be cylindrical. The output electrode 27 is connected to an amplifier 49. A plurality of parallel-connected multipliers may be arranged to receive the output from the mosaic. In a modification, Fig. 3, the multiplying electrodes are formed by the interior surfaces 29, 31 of T-tube electrodes 33, 39 the portions 33, 37 serving as focusing and accelerating electrodes. The mosaic may be two-sided, as described in Specification 454,422. Specification 442,666 also is referred to.
Patent GB-783365-A (GB)
Title: A process for cooling billets in continuous casting plants
IPC: B22D11/124
Filed: 1955-07-18
Abstract: 783,365. Continuous-casting process. BOHLER & CO. AKT.-GES., GEB. July 18, 1955 [July 17, 1954], No. 20739/55. Class 83 (1). Continuously-cast billets 1 are less energetically cooled on two opposite sides 3 than on the two intervening opposite sides, so that the liquid core 2 assumes a wedge-like, instead of conical, form. The sides 3 may be heated.
Patent GB-1464124-A (GB)
Title: Colouring polyester materials with acid dyes
IPC: D06P1/653
Filed: 1974-05-10
Abstract: 1464124 Dyeing polyesters MARTIN PROCESSING INC 10 May 1974 [5 Oct 1973] 20805/74 Heading D1B Polyester materials are coloured by impregnating by padding, printing or cascading with an aqueous solution or printing paste of one or more acid dyes in admixture with an organic nitrogen compound and an organic carboxylic acid, drying and then exposing the polyester to a dry heat at a temperature between 150C and 250C for a period of. 5 to 60 seconds to fix the dyestuff. Preferably the organic nitrogen compound is an alkyleneamine or alkanolamine or alkylamine the carboxylic acid being oxalic acid, sebacic acid, citric acid or adipic acid. Continuous processes may be used on fibres or filaments, woven, non-woven, knitted, tufted, needle-punched, flocked or laminated fabrics.
Patent GB-473570-A (GB)
Title: Improvements in and relating to kerbs and like edgings for street pavements
IPC: E01F15/08
Filed: 1936-07-28
Abstract: 473,570. Kerbs. GANNON, H. July 28, 1936, No. 20844. [Classes 87 (i) and 107] A raised road kerb 4 provides two steps 5, 6 up from the footpath 10 and two steps 7, 8, down to the roadway 1, and is provided with passages 11 for the drainage of water from the footpath to the road. The kerb may be moulded in situ, or formed of a number of blocks placed end to end as shown in Fig. 3. The passages 11 extend from the level of the footpath, which may be at a higher level than the roadway, to drainage grids 3 located in the gutters. The continuity of the kerbs is broken at cross-roads, as shown, to permit the passage of perambulators and the like from one pavement to another.
Patent GB-708138-A (GB)
Title: A process for the production of polyphosphates
IPC: C01B25/41
Filed: 1951-09-04
Abstract: In the production of alkali metal triphosphates with or without a minor proportion of other poly-phosphates, as by the calcination of orthophosphates, the conversion is catalyzed by nitric acid or one or more nitrates or oxides of nitrogen.  The nitrates, e.g. of alkali metals, alkaline earth metals, aluminium, ammonium, or of urea, guanidine, dicyandiamide, semicarbazide or hexamethylene tetramine, or the nitric acid, may be added to an orthophosphate mixture, e.g. of disodium and monosodium phosphate, before or after heating to remove water of hydration, and the mixture then calcined at 250 DEG C. upwards.  The dehydration and conversion may be effected in one operation by spraying the solution into a hot zone.  When nitrogen oxides are employed as catalyst, these may be passed over the mixture heated in a rotary tube.
Patent GB-1017685-A (GB)
Title: Speed controlled direct current motor with centrifugal switch
IPC: H02K11/23
Filed: 1964-05-20
Abstract: 1,017,685. Automatic speed control. E. WEISS. May 20, 1964 [May 30, 1963], No. 20893/64. Heading G3R. [Also in Division H2] A constant speed D. C. motor has a permanent magnet rotor 2 cooperating with a star-connected stator winding having phases 16 supplied through transistor switches 15 which are operated in sequence when current is applied to their bases through the circuit including slip ring 3, centrifugal switch 4 and commutator 5. When the motor overspeeds the centrifugal switch opens and no current is supplied to the stator windings so the motor speed decreases. By suitable adjustment of the switch, constant speed can be obtained from the motor.
Patent GB-187063-A (GB)
Title: Improvements in electrical heating of incubators
IPC: A01K41/00
Filed: 1921-08-06
Abstract: 187,063. Brazier, L. G. Aug. 6, 1921. Thermostats.-A thermostat for an electrically-heated incubator comprises a container k connected by a capillary tube l to a Bourdon tube m, the free end of which is attached to a lever q which makes contact under the action of a spring s with an adjusting screw p.
Patent GB-149010-A (GB)
Title: Aeroplane with one or several machine guns
IPC: B64D7/02
Filed: 1920-07-12
Abstract: 149,010. Rumpler, E. June 8, 1916, [Convention date]. Void [Published under Sect. 91 of the Act]. Sights and methods of sighting.-Consists in sighting machine guns mounted on aircraft by means of one or more mirrors so arranged that the guns can be aimed backwards or laterally without the gunner turning his head. In the arrangement shown in Fig. 1, the guns I, II are sighted from the same eye-point A by means of the mirrors 11 and 12 respectively, and the gun III by means of the two mirrors 13<a>, 13<b>. In a modification, Fig. 2, a single concave mirror 15 is used for a number of guns. In the construction shown in Fig. 4, a gun 12 is fixed parallel to the fore-andaft line of the aircraft, and pointing backwards, in a part tubular recess formed in the body at the side of the pilot's seat 11. The gun is sighted by means of a mirror 17 and a suitable fiducial mark so arranged that the forward field of view is not obstructed.
Patent GB-1001649-A (GB)
Title: Improvements in or relating to the manufacture of pneumatic tyres
IPC: B29D30/24
Filed: 1962-07-02
Abstract: 1,001,649. Manufacturing tyres. DUNLOP RUBBER CO. Ltd. July 2, 1962 [July 4, 1961], No. 20957/64. Divided out of 1,001,648. Heading B7C. The matter disclosed is identical with Specification 1,001,648 but the claims relate to the construction of the former.