baber/WOPTO huggingface dataset:
Patent GB-585435-A (GB)
Title: Improvements in or relating to the catalytic polymerization of unsaturated hydrocarbons
IPC: C08F10/00
Filed: 1944-11-07
Abstract: In a catalytic polymerization of unsaturated hydrocarbons in which there is an initial period of contact between the catalyst and the reactants during which polymerization does not occur, the unsaturated hydrocarbon concentration in the reaction vessel is maintained during this period at between 20 and 50 per cent of that maintained during the stable operation until polymerization is initiated and is then built up to the value required for stable operation. <PICT:0585435/IV/1> Reaction vessel 1 has a jacket 2 and an internal annulus 3 connected to the jacket pipes 4.  The jacket has an inlet 5 and outlet 6 for circulation of cooling medium and injection nozzle 8 for fresh feed and one 9 for catalyst feed.  The jacket is also fitted with an agitator 7 and overflow pipes 10.  In an example, a mixture of isobutylene-isoprene and diluent is introduced through nozzle 8 until the vessel overflows.  At the same time refrigerant is circulated through 2 and the agitator 7 set in motion.  The feed at this time is 5 to 10 per cent isobutylene, and 0.125 to 0.250 per cent isoprene, the temperature is brought down to -140 DEG  F. and catalyst introduced through nozzle 9.  When polymerization begins, the catalyst feed is cut back and the isobutylene-isoprene feed increased until it constitutes 20 to 25 per cent by weight of the reactant feed.
Patent GB-1536446-A (GB)
Title: Method and apparatus for joining sheet material
IPC: B29C65/00
Filed: 1976-05-26
Abstract: 1536446 Seaming non-metallic sheet material YOKOHAMA RUBBER CO Ltd 26 May 1976 [8 July 1975] 21853/76 Heading B5K Two pieces M of self-adhesive sheet material, e.g. rubberized core tyre fabric, are buttjoined by positioning the pieces on tables 13, 14 with opposed ends of the pieces projecting predetermined distances beyond facing parallel edges 17 of the tables; clamping the pieces on the tables 13, 14; relatively moving the tables 13, 14 towards each other to force the projecting ends of the pieces against each other to effect preliminary butt-joining thereof; unclamping the preliminary butt-joined pieces; and applying pressure to the pieces on the tables to smooth and strengthen the joint. As shown, the table 13 is mounted on a fixed support 18 and the table 14 on a carriage 19, Fig. 4, movable along guide rods 27, Fig. 3, towards and away from the support 18 by a fluid cylinder 23. A retractable stop mechanism 15 is provided for each table 13, 14 and comprises an elongate L-section stop member 33, Fig. 4, secured to a rotatable shaft 31 and movable into and out of an operative position in which the end of the respective piece M can be pushed into a recess 38 in an edge 37 of the member 33, by a fluid cylinder 34, Fig. 3, the piston rod 35 of which is pivoted to a link 36 secured to the shaft 31. After the pieces M have been positioned on the tables 13, 14, they are clamped thereon by mechanisms 16 each comprising a clamp 39 actuated by fluid cylinders 40 having piston rods 49 pivoted to levers 48 secured to a shaft 43 having pivoted thereon clamp arms 44 carrying a presser member 46. Readjusting members 51, Figs. 3 and 4, comprising side-by-side leaf springs, are carried by a beam 47 extending between the arms 44 and, upon closing of the clamp 39, frictionally engage the piece M and urge one end thereof into contact with the member 33 so that the end projects a predetermined distance beyond the table edge 17. After the pieces 17 have been clamped, e.g. simultaneously, on the tables 13, 14, the table 14 is moved towards the table 13 so that the projecting piece ends are forcibly abutted to effect preliminary joining. The clamps 39 are retracted and the joint is smoothed and strengthened by a finishing roller 62, Fig. 1, mounted on a motor driven carriage 60 reciprocally slidable along a rail 59. Preferably two rollers (61), Fig. 2 (not shown), 62, vertically movable by fluid cylinders (63), 64, are mounted on the carriage 60. Each roller comprises a coil of wire convexed in the direction of its rolling motion. The rollers (61), 62 are convexed in opposite directions since each is intended to roll over the joint in one direction only. In use, for each finishing operation, the carriage 60 is moved over the joint in a single stroke after the relevant roller (61) or 62 has been lowered by its cylinder (63) or 64. In a modification, a single convexed finishing roller only is employed and is returned to its starting position after each finishing of a joint.
Patent GB-463297-A (GB)
Title: Improvements in or relating to cathode ray tube television transmitting apparatus
IPC: H01J29/45
Filed: 1935-09-24
Abstract: 463,297. Cathode-ray tubes. MILLER, H. Sept. 24, 1935, No. 21883/36. Divided application. Drawings to Specification. [Class 39 (i)] A television transmitting tube comprises a photo-conductive screen on which an image is projected, a gun producing a scanning beam, and a secondary electron collecting electrode, and the screen material comprises zinc selenide. The screen may consist of mica coated with platinum, liquid silver (a suspension of colloidal gold and colloidal platinum in lavender oil) or gold-coated nickel, or of a metal disc, and the zinc selenide may be applied by spraying, sublimation, settling from suspension or chemical reaction on the screen. The screen may be transparent. A ring-shaped collector electrode connected to earth is arranged in front of the screen, which is biassed positively or negatively not more than 50 volts and preforably from 5 to 10 volts. The beam current should be from 1 to 10 microamps and the striking velocity from 1 to 2 kilovolts. The thickness of the screen should be less than the diameter of the scanning spot.
Patent GB-750176-A (GB)
Title: Improvements in the production of alcohols
IPC: C07C29/00
Filed: 1953-08-10
Abstract: A process for the production of alcohols from saturated aliphatic ethers with boiling points below 100 DEG  C. consists in leading the ethers in the vapour phase together with steam at elevated temperature above about 150 DEG  C. and at increased pressure above about 20 atmospheres over a solid catalyst consisting of phosphoric acid on a porous carrier substance.  The process can be combined with the known process of the hydration of gaseous olefines to alcohols by adding ethers to the reaction mixture consisting of gaseous olefines and steam.  Preferably the reaction temperature is between 240 DEG and 320 DEG  C., the pressure between 20 and 80 atmospheres or more, and the phosphoric acid contains between 10 and 40 per cent of water. Suitable carriers are active carbon, kieselguhr, silicic acid (especially silica gel) and acid minerals and the amount of acid is usually 30 to 40 per cent of the catalyst.  The direction of flow of the reactants may be periodically reversed to counteract migration of the catalyst, or layers of the carrier may be arranged above and below the catalyst for the same purpose.  In examples ethyl alcohol is prepared by (1) passing a mixture of nitrogen, diethyl ether and steam over phosphoric acid-impregnated silica gel at 275 DEG  C. and 60 atmospheres; (2) passing a mixture of ether, steam and ethylene over a similar catalyst and under similar conditions.  Dimethyl ether, methyl ethyl ether, methyl propyl ether and ethyl propyl ether also may be reacted by the process of the invention.  A drawing of a suitable arrangement of apparatus for carrying out the process is given.
Patent GB-1131364-A (GB)
Title: Mercury reservoir for a mercury cathode electrolytic cell
IPC: C25B9/14
Filed: 1965-11-11
Abstract: 1,131,364. Mercury distributer to a mercury cathode electrolytic cell. PPG INDUSTRIES Inc. Nov. 11, 1965 [Nov. 12, 1964], No.22004/66. Divided out of 1,131, 363. Heading C7B. The subject-matter of this Specification is contained in the parent Specification but the claims are concerned with a mercury reservoir or distributer for feeding mercury to an alkali metal chlorine flowing mercury cathode electrolytic cell.
Patent GB-331404-A (GB)
Title: Sanitary tank for flushing water-closets
IPC: E03D1/05
Filed: 1929-07-17
Abstract: 331,404. Gaspar, M. P. July 17, 1929. Siphon-discharge water-waste preventers - A siphon discharge in a flushing apparatus is started by depressing a float b provided with a central aperture c through which passes a tube e. The tube e which surrounds the discharge pipe d has apertures t at the base and is closed at the top end i. A frame n depresses the float and operates through a lever @ a suitable valve device, for maintaining a constant head of water in the cistern a.
Patent GB-1333302-A (GB)
Title: Converting metal images to formazan dyes
IPC: G03C5/56
Filed: 1971-04-19
Abstract: 1333302 Forming dye images from metal images EASTMAN KODAK CO 19 April 1971 [25 Feb 1970] 22119/71 Heading G2C An imagewise distribution of a metal having a standard oxidation potential more positive than -0À98 volts is converted to an imagewise distribution of a formazan dye by treating the metal image in the absence of cyanide ions with an aqueous solution containing a water-soluble diffusible tetrazolium salt which contains a metal ion complexing group; the solution reaction potential, E ( which is the sum of two half cell reactions E oxidation + E reduction), of the aqueous solution being at least +0À01 volt. The tetrazolium salt may contain in at least one of the 2-, 3- or 5-positions a group containing a 5- or 6- membered N- containing heterocyclic ring as metal ion complexing group e.g. 4, 5- dialkylthiazol-2-yl, benzothiazol-2-yl, naphthothiazol-2-yl or benzimidazol-2-yl. The tetrazolium salt may have one of the formulae: - wherein R<SP>1</SP> and R<SP>3</SP> are substituted or unsubstituted aryl or substituted or unsubstituted heterocyclyl; R<SP>2</SP> is substituted or unsubstituted aryl, substituted or unsubstituted heterocyclyl, H, alkyl, mercaptoalkyl, OH, mercapto, carboxyester, amino which may be substituted, carbamoyl which may be substituted with methyl, ethyl or phenyl groups, sulphamoyl, sulphonamido, carbonamido, No 2 , or carboxy or sulpho or a salt thereof; X<SP>-</SP> is an anion; at least one of R<SP>1</SP>, R<SP>2</SP>, R<SP>3</SP> and X<SP>-</SP> containing a metal ion complexing group; D is arylene or arylenealkylene-arylene; and E is alkylene, arylene or arylene-alkylene. After formazan dye image formation the residual tetrazolium salt may be removed by washing, the metal image reformed by reducing the complexed metal ion image to the metal and the reformed metal image converted to a formazan dye by the process above (see Examples 6 and 7). The metal may be silver, nickel, copper, iron, palladium, zinc, lead or tin. Certain formazan dyes or metal complexes thereof have absorption in the high wavelength region of the visible and near-infrared spectrum and are therefore used to make sound tracks monitored by infrared sensing devices. Thus silver sound tracks can be transformed to formazan dye sound tracks or metal complexes thereof by the process above.
Patent GB-1316725-A (GB)
Title: Polyenes
IPC: C07C69/00
Filed: 1971-04-19
Abstract: 1316725 Polyenes MITSUBISHI CHEMICAL INDUSTRIES Ltd 19 April 1971 [28 Jan 1970 25 Feb 1970 (2) 6 March 1970] 22149/71 Heading C2C Alkapolyenyl compounds, with at least 12 C and 3 carbon-carbon double bonds, are prepared by reacting (1) a 1,3-conjugated diene, in which the R 1 's may be the same or different and each denotes hydrogen or an alkyl group, and R 2  denotes hydrogen, an alkyl group or an alkenyl group with (II) a 1-substituted- 2,7-alkadiene, or a 3-substituted-1,7-alkadiene in which the R 3 's may differ from one another, each R 3  denoting hydrogen or an alkyl group, and X denotes a hydroxy, an alkoxy, an aryloxy or an acyloxy group, in the presence of a rhodium compound as catalyst. 1,3-Butadiene, isoprene, 2,3 - dimethylbutadiene, 1,3,7 - octatriene, 2,6 - dimethyl - 1,3,7 - octatriene and 2,7 - dimethyl - 1,3,7 - octatriene are examples of compound (1) and preferred alkadienyl compounds are derivatives of dimers of 1,3-butadiene and isoprene such as 1-acetoxy-, 1-methoxy-, 1-phenoxy-, 1-hydroxy-, 2,7-octadienes prepared by reacting a butadiene and an acid with a palladium acetate and triphenylphosphine catalyst. Rhodium compounds may be inorganic salts, e.g. rhodium chloride, organic salts, e.g. rhodium acetate, chelate compounds, allyl type and other complexes, added directly or in alcohol solution.  Novel compounds prepared by the process are 1-acyloxyl, 1-alkoxy, 1-aryloxy, 1-hydroxy- 2,6,10-dodecatrienes specifically the 1-acetoxy, 1-methoxy, 1-phenoxy, and 1-hydroxy compounds; 1 - acyloxy - 2 - alkenyl-, 1 - alkoxy - 2- alkenyl-, 1 - aryloxy - 2 - alkenyl- and 1- hydroxy - 2 - alkenyl - 3,7 - octadienes and 2,7-octadienes, specifically the 1-acetoxy-2-(2<SP>1</SP>- butenyl), 1 - methoxy - 2 - (2<SP>1 </SP>- butenyl)- phenoxy - 2 - (21 - butenyl)-, and 1 - hydroxy- 2-(2<SP>1</SP>-butenyl)-2,7- and -3,7-octadienes.
Patent GB-833549-A (GB)
Title: Improvements in or relating to magnetic tape recording and/or reproducing apparatus
Inventor: WILLIS DONALD WESLEY
IPC: G11B15/54
Filed: 1957-07-12
Abstract: 833,549. Driving magnetic tape. DECCA RECORD CO. Ltd. Oct. 13, 1958 [July 12, 1957], No. 22162/57. Class 40 (2). [Also in Group XVI] The reels 10, 11 of a tape-drive system are driven by independently controlled velodynetype servomotors, which respond to photoelectric sensing means 30, 32 and 31, 33 respec. tively when translucent parts of the tape, near its ends produce control signals. The reels are also controlled by other photo-electric sensing means 22-29, by means of which, loops of tape of length corresponding to points intermediate between 22, 23 and 26, 27 respectively are maintained in the boxes 14, 20, so that a portion of the tape, defined by the loops, may be rapidly moved past the heads 17, 18 by the capstans 15, 19 without hindrance in starting due to the relatively high inertia of the reels 10, 11, and their associated motors. For loading and unloading full lengths of tape, electronic and relay control means (Fig. 2, not shown) first wind the reels slowly in opposite directions to take up the slack, after which rapid winding is possible without fear of snatch breaking the tape. The signal due to the translucent part of the tape, near its end, returns the driving motor to its previous slow speed to complete the winding. A paper delivered to the I.E.E. is referred to.
Patent GB-170666-A (GB)
Title: Improvements in or connected with incubators or hatching appliances
IPC: A01K41/02
Filed: 1920-07-24
Abstract: 170,666. Forbes, Sir C. S. July 24, 1920. Hatching-appliances.-An incubator is provided with an air inlet m at one side, formed between the sleeves a, b of asbestos &c. constituting the wall of the incubator, and with a corresponding outlet channel q at the other side, the apertures l - - p connecting the channels with the interior of the incubator and with the atmosphere being so arranged that the air circulates downwardly through a diaphragm j of flannel or other water absorbent material and through the egg chamber. Electrical, hot water, or other heaters f, one or more drawers r containing water and the thermostatic capsule g are arranged above the diaphragm that separates the heating chamber from the egg-drawer k. Porous vessels containing water may be inserted through holes in the top of the incubators. For electric heating, the thermostat operates a switch i. Several incubators may be built together on one frame.
Patent GB-1428416-A (GB)
Title: Process for the separation of stereoisomeric mixtures of steroid acetals into their components and components obtained thereby
IPC: C07J5/00
Filed: 1973-05-09
Abstract: 1428416 Steroid-16,17-acetals BOFOKS AB 9 May 1973 [19 May 1972] 22195/73 Heading C2U The invention comprises the separated epimers (i.e. separated with regard to the configuration at the 2<SP>1</SP>-position of the dioxolan ring) of mixtures of formula wherein R is C 1 -C 10  alkyl; X 1  and X 2  are each H or F (provided that when X 2  is F then X 1  is F); Z is free or esterified hydroxy; and the 1,2- and 4,5-positions are each saturated or unsaturated. Isomer separation is achieved by gel filtration, suitably by chromatographing the isomeric mixture on a column of hydroxypropylated cross-linked dextran gel or a vinyl acetate copolymer gel using chloroform, methylene chloride, ethylene dichloride, tetrahydrofuran, dioxane, ethyl acetate, acetonitrile or mixtures thereof as eluents. The initial isomeric mixtures I are conventionally prepared by 16,17-acetalization reactions optionally followed by 21-acylation, and may be subjected to a preliminary purification, also by gel filtration. Anti-inflammatory compositions for topical and parenteral administration comprise an isomer of the invention and a carrier.
Patent GB-1441852-A (GB)
Title: Powder coating resin composition
IPC: C09D5/46
Filed: 1974-05-17
Abstract: 1441852 Powder coating composition ASAHI KASEI KOGYO KK 17 May 1974 [21 May 1973] 22204/74 Heading C3R A powder coating composition comprises a polyester having a softening point of 40 to 180 C. and a number average molecular weight of 500 to 8000 and a flow agent, colour stabilizer or fluorescent whitening agent, the polyester being derived from a dicarboxylic acid mixture containing from 10 to 50 mole per cent of endomethylene-tetrahydrophthalic acid. The particle size of the composition may be from 100 to 300 mesh. The examples describe compositions containing polyesters derived from endomethylenetetrahydrophthalic anhydride and one or more of the following acids and glycols: fumaric acid, dimethyl terephthalate, dimethylp,p<SP>1</SP> - diphenylethane - dicarboxylate, dimethyl naphthalene - 1,5 - dicarboxylate, ethylene glycol, propylene glycol, neopentyl glycol, hydrogenated bisphenol A and propylene glycol - bisphenol A adduct; and titanium dioxide, 2,6 - di - tert - butyl - 4 - methylphenol and a flow agent.
Patent GB-517392-A (GB)
Title: Improvements in or relating to apparatus for generating synchronising signals for television and like purposes
IPC: H04N5/06
Filed: 1938-07-26
Abstract: 517,392. Television transmitters. COMPAGNIE POUR LA FABRICATION DES COMPTEURS ET MATERIEL D'USINES A GAZ. July 26, 1938, No. 22216. Convention date, July 28, 1937. [Class 40 (iii)] Synchronizing signals are derived from sinusoidal oscillations developed by a valve E loosely coupled over l to a mechanical generator M (e.g., a syren). The invention is particularly applicable to the interlaced scanning system described in Specification 514,038.
Patent GB-658939-A (GB)
Title: A fireproof conveyor system for cotton, cotton waste, and other fibrous material
IPC: D01H1/14
Filed: 1949-08-26
Abstract: 658,939. Fire prevention in cotton processing. LANE, G. Aug. 26, 1949, No. 22228. [Class 78 (i)] An apparatus for preventing fires spreading from a first processing machine for cotton or like fibrous material to a second processing machine or storage receptacle, including two sets of driven rollers C-D and C<1>-J<1>, each comprising upper and lower rollers, the first set of rollers being adapted to smother any burning material passing therebetween and the second set of rollers being adapted to discharge material from the first set of rollers into a pneumatic conveyer Y, the apparatus including a roller M or the like which is mounted on a pivoted arm and is positioned between the said two sets of rollers, said roller being normally depressed by the conveyed material and being adapted when released due to breakage of the material caused by fire or other cause to operate a shutter Q to prevent the feed of further material into the pneumatic conveyer. As shown, cotton waste from a processing machine on the left is conveyed between the first set of driven rollers C and D of which the last pair are close together to smother any burning material, and passes over roller M on bell-crank N and thence is fed by roller pairs C<1>-J<1> and A<1>-B<1> into pneumatic conveyer Y. When the thread of material breaks, the bellcrank N swings under the influence of a counterweight clockwise and displaces a gear O integral therewith to form the gearing connection between driving sprocket Q and driven sprocket P. Sprocket P works through a crank to slide Q<1> into the pneumatic conveyer Y and so prevent entry of material therein. The roller pair A<1>-B<1> is run at a higher speed to pull out the fibres for the second processing.
Patent GB-290872-A (GB)
Title: Improvements in measuring dispensing device for containers
IPC: G01F11/12
Filed: 1927-08-25
Abstract: 290,872. Bastiaens, M. Aug. 25, 1927. Moving-chamber a,pparatus. - Relates to a container having an opening and, mounted for tilting movemnt in the opening, an L-shaped measuring trough which normally seals the opening, and consists in the pivoting arrangement of the, trough. The rectangular opening is formed as close as practicable, to the edge of the top of the can 10 and the device comprises a rectangular plate 13 bent to a right angle. The edges are provided with central notches which form pivots by receiving the walls of the opening. A pair of sector shaped plates 15 are attached to the plate 13 by tongues 17 passed through slots and bent round at the back. The plate 13 is of greater width than the opening so that the latter is sealed by the projecting edges 18 when the plate is in either extreme position.
Patent GB-613027-A (GB)
Title: Improvements in or relating to gasmeter with two bellows and two measuring chambers
IPC: G01F3/22
Filed: 1945-08-31
Abstract: 613,027. Gas meters. COMPAGNIE POUR LA FABRICATION DES COMPTEURS ET MATERIEL D'USINES A GAZ. Aug. 31, 1945, No. 22470. Convention date, Nov. 22, 1943. [Class 54] A gas meter of the kind having two measuring chambers and two bellows coupled together otherwise than by a crank spindle, the whole being enclosed in a parallelopipedic casing, is characterised by the provision of a roof in said casing defining a space above said bellows and means for excluding gas from said space, and by the location of all the control members of the clockwork and distribution within said space. The lower part 3 of a gasmeter casing containing two bellows 1, 2 is separated from the upper part 4 containing the control mechanism by a gas-tight roof 5. The bellows are connected to levers 6, which pass through membranes 10, 11 in the roof 5, are pivoted at 8, 9 in the plane of the roof 5, are coupled at 30, and operate, through a joint 32 and a crank-arm 33, two double-seated valves controlling the inflow and outflow of the gas to and from the bellows, the lower seat of each valve being directly carried by the roof 6.
Patent GB-957684-A (GB)
Title: Improvements in or relating to curing concrete
Inventor: FOULGER FRANK
IPC: C04B40/04
Filed: 1961-06-21
Abstract: A portable and re-usable quilt protecting concrete structures comprises an envelope of moisture-proof material containing a filling of particulate, or fibrous heat-insulating material. The envelope material may comprise polyethylene, polypropylene, nylon or polystyrene. The film may be a laminate of one or more films and, if desired, reinforced with filaments, cords or non-woven or woven fabric such as scrim. The filling may be cork particles, sawdust, wood-shavings and chippings, fibre-glass, slag wool, expanded plastics such as blown polystyrene beads or vermiculite. To prevent movement of the filling the envelope walls may be secured together at selected points, or the envelope divided into two or more compartments, as by heat sealing. Alternatively small rectangular packages of filling may be fitted side by side in a large rectangular moisture-proof envelope.  A number of quilts may be placed edge to edge to cover the entire surface of freshly laid concrete. Specification 809,082 is referred to.