baber/WOPTO huggingface dataset:
Patent GB-1421204-A (GB)
Title: Method for the purification of 7-amino-desacetoxycephalosporanic acid
IPC: C07D501/00
Filed: 1973-03-20
Abstract: 1421204 Purifying crude 7-amino-desacetoxycephalosporanic acid E R SQUIBB & SONS Inc 20 March 1973 [5 April 1972] 13293/73 Heading C2C A process for the purification of crude 7- amino - desacetoxycephalosporanic acid comprises the sequence of steps (1) forming an aqueous slurry of the crude material, (2) adjusting the pH of the slurry to an alkaline pH, not substantially in excess of pH 7À5, until the solids are in solution or suspension, (3) removing contaminants by solvent extraction, filtration or treatment with adsorbent or chelating agent, or combination thereof, (4) readjusting the pH to within the range of pH 3 to 6 by acidification and (5) isolating purified crystalline 7-aminodesacetoxycephalosporanic acid.
Patent GB-971078-A (GB)
Title: Improvements in tobacco pipes
IPC: A24F1/00
Filed: 1962-04-06
Abstract: 971,078. Tobacco pipes. G. E. LOVELL, and L. R. GILES. March 22, 1963 [April 6, 1962], No. 13312/62. Heading A2M. A tobacco pipe comprises a bowl portion 5 and a separate mouthpiece portion 11, a plurality of tubes 12, 13 and 14 extending between the portions 5, 11 and arranged so that smoke passes through them in succession, two of the tubes being formed by limb portions which are connected by a yoke portion disposed peripherally around the bowl. The portion 5 has a recess 7 for receiving the curved portion 15 of a generally U-shaped tube, the two arms 13 and 14 of which extend into the mouthpiece 11. The smoke drawn into the portion 5 passes into a tube 12, which may be detachable, into the mouthpiece 11, may pass through a filter 18, through a passage 16 into tube 13, around the portion 15 into the tube 14 and back into the mouthpiece to a passage 17 leading to the smoker's mouth. The mouthpiece 11 may be detachable from the tubes 12, 13 and 14. Filters may be provided in any suitable manner in the tubes 12, 13 or 14, and the mouthpiece 11 may have an opening for the removal and replacement of a filter. The curved portion 15 may be formed integrally with the bowl portion 5, the spaces between tubes 12, 13 and 14 may be filled or the tubes may be formed in a plastic moulding. The bowl portion 5 includes a finned section 6 and is screw threaded to receive a wooden bowl proper 8. The portion 5 may be made of plastic, may include a recess for receiving a filtering element and may have a hole 19 for receiving a tamping and cleaning tool 20. Specification 971,079 is referred to.
Patent GB-517716-A (GB)
Title: Observation devices for road vehicles
IPC: B60R1/00
Filed: 1939-05-05
Abstract: 517,716. Look-out reflectors for vehicles. BIRTWHISTLE, B. May 5, 1939, No. 13379/38. [Class 103 (ii)] An observation device for road vehicles, for 'enabling the driver to view on-coming, traffic in a cross-road comprises a pair of mirrors M mounted in box-like frames M' attached by a stud and nut A<2>, A' to a bracket A mounted on the bonnet. The frames are further secured together by a member C having channelled parts C<1>, C<2> engaging ribs on the ends of the frames.
Patent GB-238638-A (GB)
Title: Improved means for maintaining harmony between the speeds of electric motors
IPC: H02P5/50
Filed: 1924-05-31
Abstract: 238,638. Holt, F. B. May 31, 1924. Speed-maintaining systems. - To maintain a constant-speed ratio between different motors driving different machines, as in paper making, each of the motors S<1>, S<2> is coupled to a dynamo B' or B<2> arranged in an exciting circuit along with a constant source of supply G and an opposing dynamo A coupled to a master motor. A change of speed of either working motor relative to the master motor creates an unbalanced voltage in the corresponding exciting circuit which tends to restore the normal speed. Shunt regulators R<3> allow adjustment of the normal relativespeeds. Each of the dynamos B<1>, B<2> may havea constant field f<3> and a varying field f<4>.
Patent GB-475105-A (GB)
Title: Improvements in or relating to radio and other high frequency telegraph transmitters
IPC: H04L27/04
Filed: 1936-05-12
Abstract: 475,105. Wireless transmitting systems. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., and GEORGE, D. F. May 12, 1936, No. 13473. [Class 40 (v)] Keying of a high-frequency telegraph transmitter is effected by varying the screen potential of a tetrode or other screen-grid valve without substantially affecting the total high-tension feed. The control grid 9 is supplied with high-frequency voltage over condenser 11 and the screen grid 14 is connected to potentiometer resistances 15, 16, the keying contacts 18 connecting a point 19 on resistance 15 to earth. The point 19 is so chosen that when the contacts 18 are closed the valve is biassed to cut-off and the total current flowing from the high-tension supply remains unaltered.
Patent GB-135080-A (GB)
IPC: E01B9/58
Abstract: 135,080. Simoens, G., and Davies, W. E. Feb. 20, 1919. Chair keys.-The key jaws 2a, Fig. 3, of chairs have two sets of oppositely inclined serrations such as teeth, ribs, or projections of acute angle, forming a convex or concave surface, the centre part being either plain or slightly convex or concave and free from serrations. The key may be formed in parts 3, 3<a>; 3<b>, Fig. 5, which interlock.
Patent GB-275361-A (GB)
Title: Apparatus for heating and mixing bituminous or plastic or other substances or materials
IPC: E01C19/08
Filed: 1926-05-28
Abstract: 275,361. Morton, B., Dewhurst, H. B., Molyneux, J., Hoon, F., and Dewhurst, H. H. May 28, 1926. Cauldrons.-In portable apparatus for heating and mixing bituminous substances, the material is charged on to a preheating deck h<1> situated above the main heating drum d, valves i being provided in the deck to pass the preheated material into the drum d. The hot gases from the furnace c<1> pass under the arch c and return below the drum d, finally reaching the uptake through flues a<2> in the side walls of the preheater. The drum may be fitted with a series of rotary stirrers formed bv expanded metal e fitted into frames e<2> which are clamped to a spindle el rotated either from the road wheels through a clutch or from a separate motor. The drum may be charged directly through one or more hoppers l. In a modification, the deck h<1> slopes laterally or longitudinally towards a central valve and a disc valve may be used in place of a screw-down valve. The second Provisional Specification also describes a preheating compartment with sloping side walls.
Patent GB-1268934-A (GB)
Title: Silent reducing valve for gaseous fluids
IPC: G05D16/06
Filed: 1969-03-14
Abstract: 1,268,934. Valves. GAZ DE FRANCE. 14 March, 1969 [15 March, 1968], No. 13615/69. Heading F2V. A silent reducing valve has a porous seat 12 through which the gas must flow under the control of diaphragm 13 which is subjected to the pressure in a loading chamber 15 and cooperates with surface 12b of the seat and end 11a of inlet nozzle 8. The surface 12a of the seat is sealed to flange 11 of nozzle 8 and gas leaves the seat via surface 12c. An expansion chamber 17 surrounds the seat. The sectional profiles of surfaces 12a, 12b approximate to logarithmic spirals generated by the ends of imaginary curved lines the last of which defines the shape of surface 12c. These lines are related by an exponential relation and increase in length at an increasing rate in the flow direction. The seat cross-section is such that the flow velocity remains constant, and frictional heating precludes excessive cooling due to the pressure drop. In a modification the seat can consist of a ring of tapering porous elements of circular cross-section the spaces between the elements being filled-in. In either case, smaller particles can be used at the upstream end of the seat then at the donwstream end.
Patent GB-729527-A (GB)
Title: Improvements in or relating to preparation of new polymeric materials
IPC: C08F36/20
Filed: 1953-05-12
Abstract: Copolymers are prepared by copolymerizing in the presence of a basic catalyst a compound containing at least two ethylenic double bonds, each of which has in the alpha position to the double bond a carbonyl group, with a compound containing at least two active hydrogen atoms in the molecule.  Compounds specified containing at least two ethylenic double bonds are ethylene diacrylate and dimethacrylate, ethylidene diacrylate and dimethacrylate, ethylene dicrotonate, glyceryl triacrylate, N-(beta-acryl-oxyethyl) alpha - acryloxypropionamide, N-(beta-methacryloxyethyl) alpha - methacryl-oxypropionamide, N,N1 - bis(alpha - acryloxy-propionyl) ethylene diamine, N,N1 - bis(alphamethacryloxypropionyl) ethylene diamine, polyethylene maleate, methylene bis(acrylamide), methylene bis(methacrylamide), methylene bis(crotonamide), muconic acid-2,3-dimethylene succinic acid, 3-pentadienone, phorone, dibenzalacetone, and muconic alde, hyde.  Compounds specified containing at least two active hydrogen atoms are ammonia, hydrazine, phenylhydrazine, hydroxylamine urea, thiourea, methylamine, ethylamine, n-butylamine, amylamines, hexylamines, allylamine, aniline, benzylamine, cyclohexylamine, ethylene diamine, hexamethylene diamine, p-phenylene diamine, ethanolamine, piperazine, p-toluenesulphonamide, the diamides of suberic, pimelic, adipic, azelaic, sebacic and terephthalic acids, nitrilotriacetamide, nitrilotripropionamide, ethanedithiol, 1,5-pentanedithiol, hexamethylenedithiol, bis(20mercaptoethyl)sulphide, dithioresorcinol, ethylene glycol, propylene glycol, butylene glycol, glycerol, biphenol, p,p1-isopropylidenediphenol, resorcinol, dioximes, nitromethane, nitroethane, acetylacetone, diacetylacetone, acetonylacetone, acetophenone, methyl and ethyl malonates, ethyl acetoacetate, ethyl cyanoacetate, 2-mercaptoethylamine, and aminothiophenol.  Basic catalysts specified are sodium and potassium metals, sodium and potassium hydroxides, trimethylbenzyl-, triethylbenzyl-, dimethyldibenzyl-, and diethyldibenzyl-ammonium hydroxides, sodium and potassium methoxides, ethoxides, butoxides, and phenoxides, sodamide, and sodium triphenylmethyl; when the active hydrogen compound is itself basic in character it is not necessary to add a further basic material as a catalyst.  Polymerizatio may be carried out in bulk or in the presence of a diluent such as tert.-butyl alcohol, isopropanol, ethanol, dimethyl formamide, diethyl acetamide, dioxane, pyridine, quinoline, benzene, toluene, and water; also present in the reaction mixture may be an inhibitor for the homopolymerization of the ethylenically unsaturated compound such as hydroquinone or phenyl-beta-naphthylamine.  The reaction may be carried out by the gradual addition of one reactant to the other as polymerization proceeds.  The copolymer products may be used in coating applications.
Patent GB-149106-A (GB)
Title: Improvements in or relating to machinery or apparatus to be used in the manufacture of tinplates and other metal coated plates or sheets
IPC: C23C2/00
Filed: 1919-05-30
Abstract: 149,106. Thomas, H. S., and Davies, W. R. May 30, 1919. Sheet separators.-Plates are fed from a pile to a pickling bath by an automatic feeder of the kind described in Specification 14851/13. A sucker device picks up a plate x from a pile, an arm c swings over and passes between a middle pair of arms d, the sucker valve being meanwhile opened and the plate released; an arm e then comes into contact with a lever m which effects, through a link h and crank i, the turning of the arms d to the position indicated, when the plate slides on to an arm a<1>. On the back motion of arms d the arms d return to their normal position under the action of a weight d<2>, the motion being limited by stops. Specifications 28450/13, [Class 82 (ii), Washing granular, &c.], and 109,302 also are referred to.
Patent GB-566650-A (GB)
Title: Clutch plate facing carriers
IPC: F16D13/64
Filed: 1943-02-18
Abstract: 566,650. Friction clutches. THELANDER, W. V. Feb. 18, 1943, No. 13712/44. Divided out of 566,626. Drawings to Specification. [Class 80 (ii)] In a friction clutch the friction facing material 39, 41, (see Figs. 1 and 2 of Specification 566,626) is secured to a supporting structure comprising two parallel series of structurally independent plate sections 37, 38, arranged concentrically around a clutch plate 20 and secured thereto by rivets 25. Each section 37 has end fingers 45, 46, interconnected by inner and outer arcuate webs 48, 47, respectively, and a finger 44 extending radially from the web 48 to form a U-shaped opening 43. The finger 45 is wider than the finger 46. Each section 38 has radial fingers 53, 54, interconnected by inner and outer arcuate webs 50, 55, the parts 53, 54, 55 forming a shape corresponding to the opening 43. The inner webs 48, 50, are spaced by washers 51, the securing rivets 25 passing through these webs 48, 50. The friction facings 39, 41, are secured to the sections 37, 38, by rivets 40, 42, respectively. The rivets 42 also secure flat leaf springs 56 to the fingers 53, 54, of the sections 38. Each spring 56 on a finger 53 has a pair of arms 57, 58, engaging a finger 45 of a section 38, and each spring 56 on a finger 54 has arms 57, 58, engaging fingers 45, 46, of adjacent sections 38. A third arm 59 on each spring 56 engages a finger 44 of a section 37. Thus when the clutch plate is engaged between a fly-wheel and a pressure plate the sections 37, 38, are pressed towards a common plane against the resistance of the springs 56. As shown, the clutch plate 20 is secured resiliently to the hub member 10 by spring means 15 as described in Specification 566,626.
Patent GB-1240491-A (GB)
Title: Improvements in or relating to glass manufacture
IPC: C03B18/18
Filed: 1968-03-21
Abstract: 1,240,491. Purifying molten metal bath. PILKINGTON BROS. Ltd., D. G. LOUKES, and A. EDWARDS. 7 March, 1969 [21 March, 1968], No. 13789/68. Heading C1M. [Also in Division C7] In a method of producing a glass object 2 (e.g. a sheet) while supported on molten metal 3, the molten metal, which may be Sn or an Sn-alloy, is maintained in contact with a block 8 (e.g. of refractory material) which dissolves an alkali metal oxide from the bath, a unidirectional electric field E being maintained through the block 8 so as to cause alkali metal ions to be drawn into the block away from the molten metal. Preferably the field is provided by a D.C. source 11 whose positive terminal is connected to the molten metal and whose negative terminal is preferably connected to a pool 10 of molten metal on the block surface, e.g. Sn. The block 8 may be of silica or of glass, depending on the bath temperature (700-1000‹ C.), or of a refractory of high silica-content. The latter material is especially useful when a " tinting " treatment is carried out in the bath. The block 8 may alternatively be one of the blocks 6 of refractory material used to form the tank. In a further embodiment the block (17) is maintained in a chamber 12 remote from the bath 3, the metal being circulated to chamber 12 by paddle-wheel 16 through pipe 14, and being returned by conduit 15.
Patent GB-111996-A (GB)
Title: Improvements in Thermometers.
Inventor: SUGDEN THOMAS
IPC: G01K1/14
Filed: 1917-09-25
Abstract: 111,996. Sugden, T. Sept. 25, 1917. Thermometers.-A thermometer A is supported in a glass casing B by means of clips D with spring tongues E, the part of the casing surrounding the bulb being filled with mercury or other liquid and being separated from the remainder of the casing by a diaphragm C or by a contracted portion fused on to the thermometer.
Patent GB-1287236-A (GB)
Title: Improvements in and relating to gear boxes
Inventor: CLAY EDWARD HARTLEY
IPC: F16H3/74
Filed: 1969-11-21
Abstract: 1287236 Variable speed gearing E H CLAY 21 Nov 1969 13848/71 Divided out of 1286279 Addition to 1055987 Heading F2D The gearing of the parent Specification or of Specification 1286279 in which all the gears are spur gears and all the shafts are parallel.
Patent GB-634403-A (GB)
Title: Improvements in or relating to short-wave mixing circuits
IPC: H03D7/00
Filed: 1947-05-23
Abstract: 634,403. Receiving-systems. PHILIPS LAMPS, Ltd. May 23, 1947, No. 13905. Convention date, May 28, 1946. Drawings to Specification. [Class 40 (v)] A modulated short-wave carrier wave is mixed with an auxiliary wave in a circuit comprising a condenser having a voltage and/or current dependent dielectric to obtain a new carrier of frequency higher than and preferably high with respect to that of the initial carrier. The signal strength or energy is thereby amplified. The received signal, for example at 300 mc/s., may be mixed to a higher frequency of 1500 mc/s., the first mixing producing improved signal-to-noise ratio. The dielectric may be Seignette salt or BaTiO3 PbTiO3, or BaTiO3, with up to 35 molecules per cent of SrTiO3. In the Specification as open to inspection under Sect. 91, blocking layer rectifiers may be used as the condensers. This subject-matter does not appear in the Specification as accepted.
Patent GB-480415-A (GB)
Title: Improvements in or relating to tubular heat-exchange apparatus for fluids
IPC: F28D7/00
Filed: 1937-05-19
Abstract: 480,415. Straight-tube heat-exchangers. HUBERT, C. A. May 19, 1937, No. 13931. Convention date, May 20, 1936. [Class 64 (iii)] An enclosed apparatus for exchanging heat between two fluids comprises tubes secured in end-plates and extending through fin-plates 3 spaced apart by flat bars 4 forming fluid ducts between the fins. The tubes may be connected in series by recesses 5 formed in the endplates and provided with closure plugs 7 secured by caps 9. Alternatively, the recesses are provided with double closure plugs 7, Fig. 6. In another arrangement, the tubes are connected by bends or caps 11, Fig. 11, disposed outside the endplates. In a modified form of apparatus for exchanging heat between three fluids, the ba,rs between alternate fins are disposed at right-angles to form vertical and horizontal fluid ducts x, y, Figs. 12, 13, respectively. In this case, flue gases and air may be passed through the ducts x, y, respectively, and water through the tubes. The end-plates and the fins may be formed in sections, and each row of serially-connected tubes connected in parallel between inlet and outlet headers. Alternatively, the rows of tubes may be connected in series.
Patent GB-514199-A (GB)
Title: Improvements in or relating to machines for forming a continuous tobacco rod or filler
IPC: A24C5/18
Filed: 1938-03-29
Abstract: 514,199. Cigarette-making and like machines. MOLINS, D. W., and MOLINS MACHINE CO., Ltd. March 29, 1938, Nos. 13959 and 25932. Divided out of 514.162. Drawings to Specification. [Class 130] [Also in Group XVII] In means for feeding tobacco to continuousrod cigarette-making or tobacco-packaging machines, in which the tobacco is compacted by slowing-up the speed of the feeding movement while the tobacco is in a confining passage, the tobacco is fed into the passage between a conveyer and an endless band which passes over a rigid member. The invention is described with reference to Figs. 1 to 5 of Specification- 514,162.
Patent GB-494910-A (GB)
Title: Improvements in and relating to lehrs for flat glass
IPC: C03B25/08
Filed: 1937-05-19
Abstract: 494,910. Glass-annealing leers. PILKINGTON BROS., Ltd., and SLOCOMBE, F. E. May 19, 1937, No. 13988. [Class 51 (ii)] In a muffle glass-annealing leer 1 formed with a roller bed 3 and a partition 4 dividing it into a hot end and a colder end, air heated by mixture with flue gases from a chimney 7 connected by ports 6 with flues 2, is passed into the hotter end by one or more pipes 13 so as to create a flow of air towards the entrance 14. This flow may be controlled by a damper 16 in an outlet pipe 15. A second partition 17 and a fan 18 to draw air in and blow it out through pipes 19, 20, respectively, arranged as shown, help the flow, or, air heated by mixture with flue gases as before is blown through the pipe 20 and a damper-controlled air outlet pipe used in place of the pipe 19.
Patent GB-1470398-A (GB)
Title: Antistatic polyamides with embedded polyurethane ureas
IPC: D06M101/16
Filed: 1974-03-29
Abstract: 1470398 Antistatic polyamides AKZO NV 29 March 1974 [29 March 1973] 14050/74 Heading C3R A process for making antistatic polyamide fibres comprises melt-spinning a polyamide containing 2 to 5 wt. per cent of a reaction product of 2 moles of a diisocyanate with 1 mole water and 2 moles of a polyalkylene glycol predominantly comprising compounds where n=30 to 80, R<SP>1</SP> is H or CH 3  and R is a divalent aliphatic, aromatic or hydroaromatic group wherein the shortest chain between the valency sites contains 3 to 10 C atoms. Such reaction products may be obtained either by reacting the diisocyanate and water to form an intermediate which is then reacted with a polyglycol containing 30 to 80 ethylene and/or propylene oxide units or by reacting a mixture of all three first at a temperature at which the isocyanate and water react and then at a higher temperature so that the polyglycol reacts. It is stated that the reaction product improves light stability as well as antistatic properties. In specific examples fibres are prepared from an unidentified polyamide containing 4 wt. per cent of a reaction product derived from a polyglycol containing an average of 50 alkylene oxide units (both ethylene and propylene oxides in unspecified proportions) and hexamethylene-, tolylene-2,4-, naphthylene-1,5-, diphenylmethane-4,4- or methylcyclohexyl-2,4- diisocyanate (the preparatory method used is not stated). Reference is made to Specifications 1,317,587; 1,514,702 and 1,110,394.
Patent GB-1507484-A (GB)
Title: Electrolytic silver recovery
IPC: C25C7/06
Filed: 1975-04-07
Abstract: 1507484 Electrolytic silver recovery HYDROSPACE INDUSTRIES Inc 7 April 1975 14109/75 Heading C7B Silver is electrolytically recovered from spent photographic solutions in a cell to which an intermittent feed is supplied, plating current being supplied in predetermined quantity in response to contact with solution being fed. In Fig. 2 (not shown), solution is fed to a holding vessel (20), arranged above cell (22), and is periodically discharged into the cell by a self-triggering siphon (25). Probe 81 detects siphon discharge, while being unresponsive to stray drips, and either causes electrolysis to occur or stores an electrolysis instruction if electrolysis is in progress when discharge occurs. The anode 28 is a hollow graphite cylinder while the cathode 26 is a flexible cylindrical sheet e.g. of stainless steel. Cell discharge is via constant-level outflow 30, and agitation of the fluid is effected by means of a bladed impeller 32, 35, 37 which is rotated magnetically by interaction between annular ceramic magnets 53, 55 inside the cell and rotating driven magnet 51 below the cell. Agitation may occur in response to the solution feed, synchronously with the supply of electrolysis current. The whole apparatus may be enclosed in a resistant cover 12, with lid 14, and includes an access door and all the necessary electric/electronic circuitry. The parts 20, 61, 28 may be a unitary assembly which is lifted out to give access to the cathode.