baber/WOPTO huggingface dataset:
Patent GB-1013268-A (GB)
Title: Process for the alkylation of aromatic hydrocarbons
IPC: C07C2/68
Filed: 1962-09-20
Abstract: An aromatic hydrocarbon is alkylated with an alkylating agent in the presence of boron trifluoride and a boron trifluoride-modified, anhydrous, inorganic oxide, effluent is mixed with effluent from a transalkylation reaction (see below) and distilled to separate unreacted aromatic which is recycled, monoalkylated product and polyalkylated material which is reacted with the aromatic starting material in a transalkylation reaction in the presence of boron trifluoride and a boron trifluoride-modified, anhydrous, inorganic oxide, effluent from which is mixed with effluent from the alkylation zone.  In a preferred embodiment the alkylation effluent is flashed to vaporize gaseous material and some unreacted aromatic, the vapours are cooled to condense aromatic which is recycled and the remaining gas is scrubbed with polyalkylated material to dissolve boron trifluoride and the mixture passed to the transalkylation zone. The liquid from the flashing step is mixed with liquid from a similar flashing step applied to the transalkylation product. The vapours from the latter flashing step are cooled and recycled to the transalkylation.  The alkylating agent may be an olefin, cyclo-olefin or alkyl halide and may be a refinery stream containing ethylene and/or propylene and other gases.  The aromatic hydrocarbon, used in excess, may be benzene, an alkyl benzene or a multi-ring compound containing fused or unfused rings.  The preferred catalyst is boron trifluoride-modified alumina; zirconia, silica, magnesia, boria and mixtures thereof with or without alumina are also mentioned. Reaction is effected at 0 DEG  250 DEG  C., 1-200 atmospheres to maintain liquid phase, and 0.1-20 vol./vol./hr. with up to one gram of boron trifluoride per gram mol. of alkylating agent.  The transalkylation generally employs more severe conditions, e.g. a higher temperature up to 300 DEG  C.
Patent GB-176550-A (GB)
Title: Improvement in feed collets for metal working machines
IPC: B23G1/00
Filed: 1920-12-21
Abstract: 176,550. Fairweather, H. G. C., (National Acme Co.). Dec. 21, 1920. Rod and bar feeds.- A feed collet for a metalworking machine is made by bending or stamping a pressed-steel sheet blank. The edges 4<1> form a butt joint and may be welded together when a shoulder 9 is formed by pressing in die apparatus, or a metal band may be used in lieu of welding. The end 10 is screwed. The resilient fingers 7 are formed to a conical shape and end in parallel gripping-parts 12, the shape of which depends on the cross-sectional area and shape of the bar-stock to be fed.
Patent GB-1292437-A (GB)
Title: Improvements in or relating to apparatus for playing a game
Inventor: PICKETT GEORGE DOUGLAS
IPC: A63F3/02
Filed: 1970-07-24
Abstract: 1292437 Board game G D PICKETT 24 July 1970 35921/70 Heading A6H Apparatus for playing a game comprises a checkered board and a plurality of pieces which are reversible being of a first colour or pattern on one side and a second different colour or pattern on the other side. The pieces represent an existing regime and a rebel force which is attempting to capture a number of designated squares on the board. The game is played in the manner of draughts but when a piece is captured it is turned over so that the opposite colour is visible and it then belongs to the player whose pieces are of said opposite colour.
Patent GB-1048115-A (GB)
Title: Process for melt-shaping polyacetal
IPC: C08F283/06
Filed: 1964-09-02
Abstract: At least one vinyl or vinylidene compound is added to a polyacetal before melt-shaping. The polyacetal is preferably polyoxymethylene or poly(oxymethylene-oxyethylene).  The vinyl or vinylidene compound is preferably styrene, divinyl ethylene glycol, methyl methacrylate, 2-methyl-5-vinyl-pyridine or allyl alcohol.  The vinyl or vinylidene compound is preferably added in an amount of from 0.01% to [c inh2{residence time(second)}2 x 10-6]% (wherein c  inh is an inherent viscosity of the polyacetal measured at 60 DEG  C. in a solution of 0.1 g. of polyacetal in 100 c.c. of parachlorophenol and the residence time shows the time during which the polyacetal is maintained in the molten state) for every one compound and the total amount of such added compounds does not exceed 20%.  The addition of these compounds prevents thermal decomposition during melt-shaping into filaments, films &c.
Patent GB-340106-A (GB)
Title: Improvements in and in the manufacture of rotary bristle brushes
IPC: A46B13/00
Filed: 1929-11-25
Abstract: 340,106. Brushing apparatus for carding engines. LEECH, I., 197, Abbey Hills Road, WILDE, J. K., Ashlynne, Selkirk Avenue, and PLATT BROS. & CO., Ltd., Hartford Works, all in Oldham. Nov. 25, 1929, No. 35982. [Class 19.] A transversible rotary bristle brush structure a, Fig. 4, for cleaning and burnishing the dents of clothing F use in carding engines or other apparatus is characterized in that the bristles are mounted in a removable metal shell a, Fig. 1, having ranks of holes c and grooves d at the back for wiring- in or fixing means. Thus the bristle tufts b are all anchored to the shell a which presents a perfect bore. The grooves d may be spirally cut if desired. The supporting element is a boss e bored to fit a barrel f of the grinder motion and it has three arms or segments e<1>, Fig. 2. All the three faces e<2> of the arms el are turned, and one is machined to take the holder g for the turned shank of the butterfly member h, Fig. 1, of the traversing mechanism and another arm is bored and tapped for a grub screw i, Fig. 2, which fixes the shell on the support e. The support e may be less in width than the shell a, and end cover plates j with felt washers j<1> can be fitted to close the ends of the rotary brush structure. The brush is driven in known manner by a right and left threaded shaft k. The shell a is readily removable for rebristling.
Patent GB-891841-A (GB)
Title: Improvements in or relating to ships' fairleads
IPC: B63B21/10
Filed: 1960-10-20
Abstract: 891,841. Fairleads. BRUMMENAES, J. Oct. 20, 1960 [Nov. 14, 1959], No. 35984/60. Class 78 (5). A fairlead comprises a frame 16, 20, 21, 23, rigidly secured to the bulwark 10 of a ship and forming a mounting for a first pair of vertical rollers 24, 25, and a second similar pair 26, 27. A pair of horizontal rollers 28, 29 are journalled between support members 30, 31 rigidly connected between the frame members 16, 23. The periphery of the vertical rollers extends beyond the edges of the frame as shown in Fig. 3. The outer periphery of each horizontal roller lies in the plane containing the axes of rotation of the outer pair of vertical rollers 24, 25. A portion of the front of the top frame member 23 is cut away (Fig. 2, not shown), to permit the passage of a hawser at a steep inclination.
Patent GB-619373-A (GB)
Title: Manufacture of azo-dyestuffs
IPC: C09B35/34
Filed: 1946-12-05
Abstract: Diaminodibenzimidazoles of the general formula <FORM:0619373/IV(b)/1> (wherein R1 represents alkyl or hydrogen and R2 a bivalent hydrocarbon radical of at least two carbon atoms) are prepared by nitrating the appropriate dibenzimidazolyl compounds and reducing the resulting dinitro compounds, e.g. by treating a  : b -di-(benzimidazyl-21)-ethane or its N-methyl derivative or the ethylene corresponding to the latter, or 1 : 4 - di - (benzimidazyl - 21) - benzene, with concentrated nitric and sulphuric acid and reducing the products with iron powder and hydrochloric acid. Specification 588,972 is referred to.ALSO:Azo dyestuffs having an affinity for cellulose fibres are manufactured by coupling a tetrazotized diaminodibenzimidazole of the general formula <FORM:0619373/IV (c)/1> (wherein R1 represents alkyl or hydrogen and R2 a bivalent hydrocarbon radical containing at least two carbon atoms) with a pyrazolone.  The coupling components are advantageously so chosen that the dyestuff molecule contains at least two groups imparting solubility in water, i.e. sulpho groups or carboxyl groups. It is also advantageous to use 1-aryl-5-pyrazolones containing a diazotizable amino group as a substituent in the aryl radical, in which case the products may be diazotized on the fibre and developed, e.g. with b -naphthol or a pyrazolone.  Examples describe the preparation of the following dyestuffs (which dye cotton in yellow to orange shades): (1) a  : b -di-(61-aminobenzimidazyl-21)-ethane or a : b -di-(amino-N-methylbenzimidazyl-21)-ethane or the corresponding ethylenes \sQ 1-(31-aminophenyl)-5-pyrazolone-3-carboxylic acid; (2) the first tetrazo component of (1) \sQ 1-(41-sulphophenyl)-3-methyl-5-pyrazolone; (3) 1 : 4-di-(61-aminobenzimidazyl - 21) - benzene \sQ 1 - (21-chloro-51-sulphophenyl) -5-pyrazolone-3-carboxylic acid.  In a further example, (4) cotton is dyed with the first dyestuff of (1) from a bath containing sodium carbonate and sodium sulphate and the dyeing is diazotized on the fibre and developed with b -naphthol to a yellow-red shade.  Additional coupling components specified are: 5 - pyrazolone - 3 - carboxylic acid, 3-methyl-5-pyrazolone, 1-phenyl-3-methyl-5-pyrazolone, 1-phenyl-5-pyrazolone-3 - carboxylic acid, 1 - (31 - sulphophenyl) - 3 - methyl - 5 - pyrazolone, 1 - (31 - nitrophenyl)-, 1-(41-hydroxy-31-carboxyphenyl)-, 1-(31- and 41-aminophenyl)-, 1 - (31-(311-aminobenzoyl - amino)-phenyl)- and 1-(41-(411-aminodiphenyl-4111-carboxyamino) - phenyl) - 5 - pyrazolone - 3 - carboxylic acid, and 1-(411-amino-211 : 21-disulpho)-stilbene-3-methyl-5-pyrazolone. Specification 588,972 is referred to.
Patent GB-396275-A (GB)
Title: Improvements in the sterns of screw-propelled ships
IPC: B63B1/04
Filed: 1932-12-20
Abstract: 396,275. Ships' sterns. MATTHIESSEN, P., 6, B÷rsenbr³cke, Hamburg, Germany. Dec. 20, 1932, No. 36099. [Class 113 (ii).] In ships with twin propellers, a projection c in the stern occupies the under-pressure and eddy zone produced abaft of the propeller. This projection may be made by hollowing out the normal water line of the stern as shown or an enlargement may be built on the stern. The rudder may be arranged aft and forming part of the enlargement.
Patent GB-176558-A (GB)
Title: Method of and means for maintaining vacua or partial vacua
IPC: F04D29/08
Filed: 1920-12-23
Abstract: 176,558. Shishkoff, P. Dec. 23, 1920. Machinery, vacuum. casings for reducing resistance in.-In means for maintaining a vacuum in the casing of geared machinery packing is provided for each of the geared shafts and so arranged that the difference in pressure of opposite sides of the packing diminishes with the increase in speed of the different shafts. In the driving gear for a dynamo shown in Fig. 2, the armature 22 is located in an airtight casing 23, the shaft 2, carrying a fly-wheel 21. being mounted in bearings 10, 11 provided with light packing washers 10. The shaft 2 is driven by gearings 3, 4, from a relatively slow-running shaft 1 mounted in bearings 8, 9, containing heavy packing 14. The casings 5, 7, and optionally also the casing 23, are exhausted by a belt driven air Dump 25. by way of a pipe 29 and cocks 32, 33. In the application to a turbine, the motor takes the place of the fly-wheel 21 and the gearing is located at the low pressure end, whereby the speed of the shaft 1 is reduced as required.
Patent GB-1284638-A (GB)
Title: Extraction of iron from titaniferous ores
IPC: C22B34/12
Filed: 1970-07-24
Abstract: 1284638 Removing iron from titaniferous ores NATIONAL LEAD CO 24 July 1970 [31 July 1969] 36140/70 Heading C1N Iron is removed from a titaniferous ore by heating the ore under reducing conditions to reduce the iron content to metallic Fe, and leaching first with a dilute non-oxidizing inorganic acid and then with an acidic aqueous medium in the presence of an oxidizing agent. The initial ore may be beach sand (28-200 mesh) or ground massive ilmenite, which may be pre-roasted in air to convert Fe<SP>2+</SP> to Fe<SP>3+</SP>. Reduction may be effected at 700-1250 C. using e.g. coal, in a static or fluidized bed or rotary kiln. The ore may then be magnetically separated and ground. The first acid may be 3- 24% H 2 SO 4 , preferably waste acid from Ti sulphate hydrolysis. The 2nd stage may be effected after separating and washing the ore from the first stage, or by adding the oxidizing agent directly to the first stage leach. The oxidizing agent may be Fe 2 (SO 4 ) 3 , FeCl 3 , HNO 3 , or air or O 2  which form Fe<SP>3+</SP> in situ. Haematite or copperas may be added together with air as source of Fe ions. NH 4 Cl or SO 2  may be added as accelerators. The pH may be 3-5. Both leaches may be effected at 25-100 C. The leaching agents may be sprayed on to the ore as it travels up an inclined vibrating trough. The leached ore may be filtered, washed with water at 15-50 C., and dried.
Patent GB-1345087-A (GB)
Title: Antiskid control system
IPC: B60T8/00
Filed: 1972-08-02
Abstract: 1345087 Heating antiskid systems TELDIX GmbH 2 Aug 1972 [15 Aug 1971] 36169/72 Heading F4U [Also in Division F2] Components of an antiskid braking system are formed into a block 1 which is heated by an electrical heater or by heat exchange with the vehicle engine cooling circuit or lubrication circuit via connections 3, 4.
Patent GB-1383333-A (GB)
Title: Process for the manufacture of cyclic compounds
IPC: C07C47/23
Filed: 1972-02-18
Abstract: 1383333 3-(9-Anthryl)-acroleins CIBAGEIGY AG 18 Feb 1972 [23 Feb 1971 17 Jan 1972] 36191/74 Divided out of 1383332 Heading C2C The invention comprises compounds having the general formula which may be unsubstituted or substituted at any one or more of the following positions; (a) in the acrolein side chain by one or more alkyl radicals, (b) at one or more of the positions 1 to 8 by alkyl, alkoxy, alkenyloxy, alkylthio, alkylsulphonyl, alkanoyl, nitro, amino or halogen, and (c) at position 10 by alkyl or halogen. They may be prepared by acetalizing the corresponding 9-formyl-anthracene, reacting the acetal with ethenyl ether or ethenyl ester and decomposing the resulting product with aqueous acid. The invention further comprises a process for the preparation of 9-(3-imino-1- propenyl)- and 9-(3-amino-1-propenyl)-9,10- dihydro-9,10-ethano anthracenes by condensing a compound of Formula I with an amine to form a Schiff's base which is reduced if the amino product is desired, and reacting the optionally reduced Schiff's base with optionally alkylated ethylene.
Patent GB-1431940-A (GB)
Title: Copolymers
IPC: C12N11/08
Filed: 1973-07-30
Abstract: 1431940 Copolymer carriers for biologically active substances ROHM GmbH 30 July 1973 [29 July 1972] 36218/73 Headings C3H and C3P Copolymers in the form of particulate, cross-linked, water-swellable, spherical beads suitable for use as carriers for biologically active substances containing at least one primary amino or hydroxyl group, are prepared by copolymerizing a dispersion in a non-polar organic medium of a monomer mixture comprising:- (a) at least one radically copolymerizable monomer containing a group capable of reacting with the primary amino or hydroxyl group or groups of the biologically active substance with the formation of a covalent bond; (b) at least one monomer containing at least two radically copolymerizable carbon-carbon double bonds; (c) one or more radically copolymerizable water-soluble monomers, i.e. those which, at 20‹ C., give an at least 10% by weight aqueous solution; and (d) if desired, one or more radically copolymerizable water-insoluble monomers; component (b) amounting to 0À2 to 5 mol per cent of the monomer mixture, and the amounts of components (a), (b) and (c) being selected to provide a total amount of 50 to 100 mol per cent of the monomer mixture and to provide beads of the resulting copolymer which are capable of swelling in water to 5 to 100 times their original volume; and subsequently separating the resulting particulate copolymer from the organic medium. In the examples acrylamide, methacrylic anhydride, ethylene glycol dimethacrylate, acrylic acid, triethylene glycol dimethacrylate, acrylic anhydride, methacrylamide, acryloyl N- hydroxy-succinimide and glycidyl acrylate are copolymerized in the presence of n-heptane, perchloroethylene, benzoyl peroxide, dimethylformamide, n-butyl methacrylate/methacryloylcholine hydrochloride copolymer as emulsifier, dimethylaniline, formamide, an aliphatic oil, a stabilizer and 4,4-azobis-(4-cyano-valeric acid). The resulting polymer beads are reacted with trypsin, chymotrypsin, pancreatin, protease of Streptomyces griseus, ribonuclease A, desoxyribonuclease I, insulin, glucagon, hypertensin, trypsin inhibitors from pancrease, tyramine and antibiotic ampicillin.
Patent GB-987478-A (GB)
Title: Vacuum arc x-ray tube system and method
Inventor: DYKE WALTER PAYNE
IPC: H01J35/22
Filed: 1962-09-24
Abstract: 987,478. X-ray tubes. FIELD EMUSSION CORPORATION. Sept. 24, 1962, No. 36271/62. Heading H1D. The cathode 50, Fig. 14, of a vacuum arc X-ray tube is formed with a multiplicity of needle points 52 from which a high-voltage pulse, of shorter duration than the ion-transit time between the cathode 50 and anode 118, induces field emission to initiate the arc and give a short X-ray pulse. As shown, the anode 118 is inclined and magnetic focusing coils 122 are provided. The needles may be produced (a) by photo-etching the edge of a tungsten strip; (b) winding layers of tungsten wire, separated by copper-plating, on a threaded mandrel, then cutting sections of the mandrel with its copper-embedded windings and etching away some of the copper; (c) winding tungsten wire round spaced parallel supports to which the wire is welded or secured by electroplating and then cutting the wires between the supports; (c) dendritic crystal growth: for example thermal decomposition of tungsten hexacarbonyl or hexachloride vaporized on to tungsten at high temperatures. A portable X-ray gun whose barrel is a continuation of a coaxial power cable may have a circular array of cathodes 50, Fig. 5, supported in a collar 88 shaped as shown for focusing. The tapered anode 42, which may have a pyramidal shape with the number of faces equal to the number of cathodes, gives a strong axial beam of X-rays. Groups of cathodes may be arranged on either side of a metal ring. Alternatively, Fig. 10, a conical cathode 52a is surrounded by an anode 102 which may be thick as shown to provide shielding on thin, as at 104 in Fig. 11, to allow the passage of X-rays through it. In Fig. 18, three cathode cups 140 are spaced around an anode structure 150 having three flat portions 152.
Patent GB-1350709-A (GB)
Title: Machine for packaging a product in substantially flat flexible walled pouches
IPC: B65B9/08
Filed: 1972-08-03
Abstract: 1350709 Filling pouches REXHAM CORP 3 Aug 1972 [16 Aug 1971] 36317/72 Heading B8C A machine for filling pouches 10 with a particulate product comprises mechanism for advancing the pouches open end up through a filling station 18, 19, an apertured bar 21 extending through the filling station and straddled by the upper ends of the pouches, a nozzle 36 extending through the bar at the filling station, means for dispensing charges of the product through the nozzle 36 into the pouches and means for injecting pressurized gas into the nozzle to assist the flow of product into the pouches. As shown, a strip of pouches is fed by rollers 15 to a cutting mechanism 16 from which pouches are picked up by clamps 14 carried by a conveyer 11, the conveyer, feed rollers 15 and mechanism 16 being driven intermittently by a drive shaft 17. Each pouch is initially partially opened by a shot of gas injected through a passage 24 in the bar 21, the pouch being pressed against the bar 21 by rubber pads 29. As the pouch is advanced under the nozzle 36, the product is delivered from a dispenser 33 comprising a hopper 34, a collector 35 and an auger 37 carrying a dish 41, from which the product is spun into the collector. The product is delivered through a passage 43 in the bar 21 and is propelled into the pouch by a non-oxidizing gas introduced into the collector through a port 51. As each pouch is filled, it is clamped against the bar 21 by pressure pads 60 and any excess gas is returned to the hopper 34 through passages (61), Fig. 4 (not shown) and lines 62, 62a. The pouch is then advanced to a purging station 65, where an additional shot of gas is injected through a line 67 and the pouch is shaped by vertical paddles 69. Pressure pads (71), Fig. 7 (not shown) lightly clamp the pouch to the bar 21. The pouch is then advanced to a sealing station 20, after having the top seal areas vibrated by motor-driven paddles 74 to remove any surplus product therefrom. Staggered rails 77, Fig. 8 (not shown) nip the top of the pouch which is then sealed between sealing bars 80 carried on swingable rods 81. U.S.A. Specifications 3,619,975 and 2,849,671 are referred to.
Patent GB-832971-A (GB)
Title: Improvements relating to multi-cavity magnetrons
Inventor: DUNSMUIR ROBERT
IPC: H01J25/587
Filed: 1955-12-19
Abstract: 832,971. Magnetrons. BRITISH THOMSON-HOUSTON CO. Ltd. Dec. 12, 1956 [Dec. 19, 1955], No. 36340/55. Class 39(1). A multi-cavity magnetron having an odd number of resonator cavities is coupled to an external load through a directional coupler so that waves rotating in one direction only are lightly coupled and waves rotating in the opposite direction are heavily damped. The travelling wave maintained in the lightly coupled direction may in the reverse direction to the electron stream which interacts with a backward space harmonic component of the wave. In Fig. 4, the directional coupler is a "rat race" bridge circuit with outlets 1, 2, 3, 4. Operation may be restricted to a desired mode by (1) connecting alternate segments S, Fig. 1, by means of a continuous strap 3 which makes two complete circuits round the cavities to provide a closed loop of two turns, (2) having a number of cavities which is an odd multiple of three greater than unity and connecting the segments in groups of three by means of circular straps, or (3) having a number of cavities which is an odd multiple of three greater than unity and making every third cavity larger than the others.
Patent GB-943329-A (GB)
Title: Method and apparatus for shaping cloth
IPC: D06F71/30
Filed: 1962-09-25
Abstract: 943,329. Ironing-boards and steam irons. J. O. JAMES. Sept. 25, 1962, No. 36414/62. Heading D1A. Cloth 12 is shaped to provide a smooth surface portion of compound curvature by laying the cloth over a surface 2, 3 having a curved step 4 so that an edge lies on the upper level 2, pressing a die 5 upon the cloth and against the step 4 the contour of which it matches so that the cloth is raised in a fluted rim 13, and moistening and ironing the rim 13 over the surface 2 or (as shown) the die 5 to shrink the rim 13 to a smooth shape. The method is suitable for providing the partly toroidal surface present near the upper shoulder join of the sleeves of coats,dresses &c. The die 5 is mounted on a collar 9 vertically slidable on a rod 10 and provided with a locking lever 11. The rod 10 and collar 9 may be grooved &c. to prevent rotation of the collar 9. Moistening and ironing may be done by a steam iron which has a concave front corresponding to the concave contour of the step 4 and which is pivoted so that it barely touches the surface 2.