baber/WOPTO huggingface dataset:
Patent GB-828028-A (GB)
Title: A process for the preparation of aromatic di- and polycarboxylic acids
Filed: 1957-10-10
Abstract: Aromatic di- or poly-carboxylic acids or their salts or other derivatives are prepared by heating a salt of an aromatic mono-, p di- or polycarboxylic acid above 350 DEG  C. in the presence of carbon dioxide, which may be present in a free or combined form, an acid-binding agent and a substance capable of binding or reacting with the water formed during the reaction.  The salt obtained may be converted into the free acid or other derivative. The salts preferably used are the alkali or alkaline earth metal salts, particularly the potassium salt, mixtures of salts, e.g. the potassium and sodium may also be used.  The starting acids may be acids such as benzoic, a - and b -naphthoic, diphenyl monocarboxylic, phthalic, isophthalic, terephthalic, naphthalic, other naphthalene dicarboxylic acids, diphenic, other diphenyl dicarboxylic acids or mono-, di- or poly-carboxylic acids, where the carboxyl groups are attached to anthracene, terphenyl, diphenyl-methane or benzophenone ring systems.  The acids may also bear halogen or alkyl substituents in the rings.  Mixtures of these acids, e.g. obtained by oxidation of alkylaromatic compounds or coal may also be used.  The acid binding agent may be an alkali or alkaline earth metal carbonate, bicarbonate, formate or oxalate, particularly potassium carbonate. The water binding agent may be a metal carbide, particularly aluminium carbide, or the carbides of the alkali or alkaline earth metals, e.g. calcium carbide, their nitrides or borides may also be used, and so may alkali metal carbonates present in an amount of at least one mol. per mol. of the aromatic carboxylic acid salt.  The heating is preferably carried out in the presence of carbon dioxide under pressure and the reaction mixture, which is a dry, finely-divided solid, may be mixed with inert solids, liquids or gases or otherwise treated to avoid local overheating and caking. The reaction is found to be influenced by catalysts and metals such as zinc, cadmium, mercury, lead and iron or their compounds may be added to the reaction mixture.  In the examples terephthalic acid and some trimesic acid is obtained when potassium benzoate is heated (1), (4) with potassium carbonate, aluminium carbide and cadmium fluoride under carbon dioxide pressure at 410 DEG  C., (2) as in (1) using K2Cd(CN)4 as a catalyst, (3) with an excess of potassium carbonate as the water binding agent (approximately 6 mols. per mol. of benzoate) and K2CdF2Cl2; (5) potassium b -naphthoate is heated with potassium carbonate, aluminium carbide and cadmium fluoride to give naphthalene-2 : 6-dicarboxylic acid; (6) sodium benzoate is heated with aluminium carbide and cadmium fluoride under carbon dioxide pressure to give a mixture consisting mainly of orthophthalic and benzoic acids.  Specifications 816,593, 820,540, 824,205 and 827,467 are referred to.
Patent GB-1060346-A (GB)
Title: Magnet coil
IPC: H01F7/20
Filed: 1965-07-26
Abstract: 1,060,346. Magnet coils. UNITED STATES ATOMIC ENERGY COMMISSION. July 26, 1965 [Sept. 11, 1964], No. 31698/65. Heading H1P. A liquid-cooled magnet coil, particularly for high-energy particle experiments or for a mass spectrometer, comprises two copper strips 20, 21 electrically connected together at their ends and separated by insulating cross pieces 22 which are secured to insulating strips 24, 25 running along the edges of the copper strips 20, 21 so as to form cooling liquid channels 26. The insulating members may be of polypropylene and the turns of the copper strips may be insulated from one another by double sheets 27 or polypropylene. Figs. 3, 5 (not shown) relate to aluminium bobbin construction having baffles between the cheeks and the ends of the winding so as to form passages for two-directional flow of demineralized cooling water.
Patent GB-648163-A (GB)
Title: Improved wrench
IPC: B25B13/46
Filed: 1948-12-08
Abstract: 648,163. Ratchet wrenches. AGRICOLA REG. TRUST., and HACKLANDER, K. H. Dec. 8, 1948, No. 31735. [Classes 61(i) and 61(iii)] A cylindrical bushing ! bored at 6 to receive a nut is disposed centrally in a hole 3 formed in the head 2 of a ratchet spanner by means of leaf-spring pawl: 8 which are equally spacec round, and tangential to the wall of the bushing 5 Ratchet teeth 4 formed to coact with the pawls on the inside of the bore 3 are a small multiple plus one of the number of pawls. The ratchet teeth may be formed on the bushing 5 and the pawls may be fixed within the hole 3. In a modification, the leaf - spring pawls 8, which may be of weaker construction than those used in the first embodiment, extend only over the central part of the outer wall of the bushing 5. The peripheral edges of the bushing 5 are provided with teeth which coact with similar teeth formed on the edges of the opening 3 when the bushing 5 is displaced from its central position by a force applied to a handle 1. The pawls 8 may be formed of bundles of leaf-springs having their ends staggered, and the bushing 5 may be held in the hole 3 by means of rings screwed into the head 2. An extension handle 40, Fig. 6, may be journalled to the end of the handle 41 and be lockable by a spring-engaged pin 43 in line with or at right angles to the handle 41.
Patent GB-1382500-A (GB)
Title: Linearizing circuit for a ramp generator in a differential scanning calorimeter
IPC: G01K17/04
Filed: 1972-07-06
Abstract: 1382500 Differential thermal analysis apparatus PERKIN-ELMER CORP 6 July 1972 [9 July 1971] 31735/72 Heading G1N [Also in Division H3]  A differential scanning colorimeter 10 includes: a ramp signal generator 12 to control heaters 66, 68 for the sample and reference materials respectively; a filter 32 to remove from the ramp signal ripple introduced by the potentiometer 14 of the generator; and positive- and negative-going step signal generators 34, 36 respectively from which a selected signal is added to the ramp signal to compensate it for the log introduced by the filter. The signal lag would otherwise cause the actual temperatures of the sample and reference  materials to lag considerably behind those set by the ramp. Selection of the appropriate step signal is by switch 37 ganged to the speed controller of the motor 20 driving the wiper 18 of the potentiometer 14 to produce the ramp. More details of the scanning colorimeter are in Specification 1038788 (see Division G1).
Patent GB-1134587-A (GB)
Title: Improvements in or relating to warp knitting machines
IPC: D04B27/26
Filed: 1967-07-11
Abstract: 1,134,587. Knitting-machines. K. LIEBRANDT. 11 July, 1967 [30 Aug., 1966], No. 31831/67. Heading D1C. A guide bar 1 of a warp knitting machine is operated through lever 4 by a pattern chain 5 to move the bar for patterning and is pivotally mounted on a second lever 13, pivotable about a fixed pivot 14 by a pattern cam 11 to effect the over-lap.
Patent GB-1269825-A (GB)
Title: Flat pack electromagnetic relay
Inventor: KRIZMAN THEODORE M
IPC: H01H51/28
Filed: 1969-06-24
Abstract: 1,269,825. Electromagnetic relays. ADAMS & WESTLAKE CO. 24 June, 1969 [31 Jan., 1969], No. 31910/69. Heading H1N. An electromagnetic relay for modular mounting has its armature and polepieces extending from opposite ends of a glass envelope and magnetically connected by an elongate member having a portion, on which the relay operating coil is mounted, extending alongside the envelope. As shown in Figs. 1 and 2 the elongate member 20 extends from the armature terminal 12 to a position between the contact poles 16, 17 of a mercury-wetted change-over contact device 10 having sealed envelope 11. The end 21 of the member 20 is provided with insulation 19b and is also adjacent an insulated polarizing magnet 19. The coil 20a surrounds the member 20 and its outer diameter is less than that of the contact unit 10. A branched elongate wire member 27 (Fig. 6) may be magnetically coupled to two contact units 10 having a common polarizing permanent magnet 31. A plurality of permanent magnets (not shown) may be provided and the free contact end of the armature may bridge a pair of fixed contact poles in each position. With this arrangement (Fig. 11) the insulated end 40a of the elongate member 38 extends only between one pair of poles 36 which extend further from the contact unit 33 and are polarized by -magnets 42.
Patent GB-1299762-A (GB)
Title: Vacuum apparatus
Inventor: DUNN WILLIAM H JR
IPC: B65B31/06
Filed: 1970-07-01
Abstract: 1299762 Vacuum apparatus W R GRACE & CO 1 July 1970 [25 July 1969] 31956/70 Headings F1N and F1P (or F1D) [Also in Division B8] An apparatus for evacuating air from a product containing plastics bag during packaging, comprises a fixed suction tube 14 and a slide 30, 42 having a handle 34 around which is gathered the mouth of the bag, the handle 34 being moved downwardly when suction is to be applied through the tube to nozzle ports 74. The slide 30, 42 moves over the tube 14 and extends through a seal 38 into a cylinder 36 maintained under vacuum through a conduit 6. When the slide is moved downwardly against the action of a spring 41. radial ports in the slide align with elongated slots 67 in the tube 14 to communicate the vacuum in the cylinder 36 with the tube 14. Further downward movement of the slide 30, 42 results in the upper end 35 of the slide passing below radial ports 71 in the fixed tube 14 whereby air is evacuated downwardly through a passage 64 from a space below a universally jointed piston 90 in a cylinder 36. This evacuation causes the assembly 14, 30, 42, 36 &c to lift, thereby to stretch the mouth of the bag and facilitate sealing thereof. The apparatus is easily disassembled for cleaning, the end-cap of the cylinder 36 having a bayonet connection to the cylinder.
Patent GB-208720-A (GB)
Title: The manufacture of a dyestuff from naphthidine
Filed: 1923-12-20
Abstract: 3.10-Perylene quinone is prepared by heating 4.41-diamino-1.11-dinaphthyl (naphthidine) or a salt thereof with a ring-closing condensing agent and oxidizing the 3.10-diaminoperylene formed, with or without previous isolation. Ring-closing condensing agents mentioned are aluminium chloride and ferric chloride, to which an alkali salt may be added.  The quinone may be purified by treatment with a solvent such as pyridine, or it is vatted and again oxidized.  According to the example, naphthidine is heated with aluminium chloride; the product is pulverized, washed with dilute hydrochloric acid, and oxidized with a mixture of sodium bichromate and sulphuric acid; the residue forms a red vat from which the quinone is precipitated on oxidation.  It dyes cotton yellow.  The Specification as open to inspection under Sect. 91 (3) (a) describes also the preparation of 3.10-perylene quinone by dissolving 3.10-diaminoperylene in concentrated sulphuric acid and treating it with nitrous acid.  By chlorinating a suspension of 3.10-perylene quinone in nitrobenzene, a chloro derivative is produced which dyes a vivid yellow from a red vat.  The corresponding bromo derivative dyes orange.  It is stated that nitro, amino, anilido and other derivatives may also be produced. This subject-matter does not appear in the Specification as accepted.
Patent GB-520915-A (GB)
Title: Improvements in or relating to sound reproducing apparatus such as radio receivers
IPC: H03G3/32
Filed: 1938-11-04
Abstract: 520,915. Automatic volume control. KOLSTERBRANDES, Ltd., and SMYTH, C. N. Nov. 4, 1938, No. 32031. [Class 40 (iv)] [Also in Group XL]  Sound reproducing apparatus such as a radio receiver has means for reducing the output volume in response to extraneous sound, e.g., when conversation occurs in a room. Alternatively, or in addition, the range of frequency response may be reduced. In the arrangement shown, a microphone M control: over a transformer T rectifier D, and time-lag circuit Z the application of a volume-control bias to the' receiver S, and the control is made unresponsive to the reproduced sound by connecting the microphone across a potentiometer P. The microphone is mainly responsive to a limited speech-band and a filter F similarly limits the response. The microphone M may be fixed in the cabinet or placed in a predetermined position to give the correct phase relationship. Alternatively, two microphones positioned so that their outputs normally balance may be employed. The potentiometer P may be linked with the normal volume-control means.
Patent GB-1187017-A (GB)
Title: Substituted 1-Amino Indanes and Tetrahydronaphthalens
Inventor: JAMES JOHN WILLIAM
IPC: C07C215/64
Filed: 1966-07-16
Abstract: 1,187,017. N - Cyclopropylaminobenzocycloalkanes. ASPRO-NICHOLAS Ltd. 5 July, 1967 [16 July, 1966], No. 32067/66. Heading C2C. Novel compounds of general formula wherein Y is methylene or ethylene, R 1  and R 2  are H, halogen, OH, ethyl, methyl or C 1-4  alkoxy, R 3  is H, C 1-4  alkyl, propargyl or cyclopropyl and R 4  is cyclopropyl, provided that when Y is methylene and R 3  is H or alkyl at least one of R 1  and R 2  is not H, and acid addition salts thereof, are prepared by one of the following methods: (a) reaction of a ketone of Formula II with a formamide of formula HCONHR 5 , where R 5  is R 3  (not H) or R 4 , and subsequent hydrolysis of the resulting formamide to a compound of Formula IV optionally followed by introduction of R 3  or R 4  as appropriate; (b) compounds of Formula IV may also be prepared by reaction of a ketone of the above Formula II with an amine H 2 NR 5  under reducing conditions and can then be converted as in (a); (c) an amine of formula R 5 - NH 2  is reacted with a compound of formula where X is halogen or (d) by reduction of the corresponding dihydronaphthalene compound intermediate prepared by carrying out reaction (b) under non-reducing conditions; in all cases optionally followed by salt formation or conversion of one salt to another. Pharmaceutical compositions in conventional forms for oral, rectal or parenteral administration and having hypotensive activity comprise an above novel compound and a carrier therefor. A method for lowering blood pressure in animals comprising administering an above novel compound or composition to the animal is also claimed.
Patent GB-801555-A (GB)
Title: Improvements in or relating to the polymerisation of vinyl-aromatic compounds
Inventor: BAILES PETER
IPC: C08F32/00
Filed: 1955-11-09
Abstract: A catalyst for the polymerization of vinyl aromatic compounds comprises a mixture of (a) RMX3, where M is titanium, zirconium or thorium, X is less electro-negative than chlorine and R is an alkoxy group or a halogen atom; and (b) an aluminium dialkyl monochloride and aluminium trialkyl or a mixture of an aluminium trialkyl and aluminium trichloride.  Specified catalysts (a) are titanium tetra-ethoxide, tetra-isopropoxide or tetra-tertiary hetoxide, titanium tributyrate monochloride and titanium tribenzoate monochloride.  Specification 801,554, [Group IV (a)], is referred to.ALSO:Vinyl-aromatic compounds are polymerized using as catalyst a mixture of (a) and (b), where (a) has the formula RM(X)3 where M is titanium, zirconium or thorium, X is less electronegative than chlorine and R is an alkoxy group or a halogen atom, and (b) is an aluminium dialkyl monochloride, an aluminium trialkyl or a mixture of an aluminium trialkyl and aluminium trichloride.  Specified vinyl-aromatic compounds are styrene, o-, m- and p-methyl and ethyl styrenes, alpha and beta methyl styrenes, p-chloro-styrene, p-trichloromethyl styrene, p-methoxy styrene, 2,5-dichlorostyrene, alpha and beta mono-vinyl tetrahydronaphthalene, phenyl and benzyl acrylate and methacrylate and their halogen-substituted derivatives, vinyl benzoate and mixtures thereof.  Specified catalysts (a) are titanium tetraethoxide or tetra isopropoxide or tetra-tertiary butoxide, triethoxy titanium chloride, titanium tributyrate monochloride and titanium tribenzoate monochloride, and (b) is diethyl aluminium monochloride.  The polymerization is preferably carried out in an inert solvent such as iso-octane, n-hexane, toluene and ethylene dichloride.  The vinyl aromatic compound may be added either in bulk or fed continuously to the catalyst suspended in the solvent.  Temperatures from 20 DEG  to 120 DEG  C. may be employed. The catalyst may be removed after polymerization by decomposition with an alcohol such as methanol, ethanol or isopropanol or with aqueous or alcoholic mineral acid, e.g. hydrochloric acid, and the polymer may be freed from catalyst remnants by the use of an aqueous solution of a detergent as described in Specification 801,554 with or without steam-stripping.
Patent GB-1442154-A (GB)
Title: Composition for promotion of protein synthesis and suppression of urea formation in the body
IPC: A61K31/195
Filed: 1973-07-05
Abstract: 1442154 Medicines comprising amino acid analogues M WALSER 5 July 1973 [30 April 1973] 32121/73 Heading A5B Pharmaceutical compositions for promoting protein synthesis and suppressing urea formation in the body, e.g. in renal failure, comprise a carrier and the a-keto analogues of valine, phenylalanine, methionine and leucine, the levo form of the a-keto analogue of isoleucine and either the amino acids histidine and tryptophan or their alpha-keto analogues. The alphaketo analogues of lysine, threonine and arginine and the amino acids L-tryptophan, L- threonine, L-lysine, and L-histidine or L- arginine may also be present. The keto acids may be in the form of their sodium or calcium salts and the compositions may be in forms suitable for oral and parenteral administration.
Patent GB-831243-A (GB)
Title: Improvements relating to finely crystalline pigment dyestuffs of the dioxazine series
IPC: C09B67/00
Filed: 1957-10-16
Abstract: Dioxazine pigments are made in fine crystalline form by grinding pigment dyestuffs of the dioxazine series with inert salts which are harder than the dioxazine pigment and which can be removed with solvents later and in the presence of solid or liquid, non acid-reacting organic solvents which do not have a solvent action on the salt or on the pigment.  Solvents specified include hydrocarbons, halo-hydrocarbons, nitro-hydrocarbons and nitrogen bases.  The pigments colour lacquers, resins, polymers, rubber, viscose and cellulose esters, paper and textiles.
Patent GB-279672-A (GB)
Title: Improvements in or relating to a method of and apparatus for supplying the mixture of fuel and air to internal combustion engines
IPC: F02M1/00
Filed: 1926-12-21
Abstract: 279,672. Ebersbach, O., and Ebro Vergaser Ges. Dec. 21, 1926. Spray carburettors; vaporizers, external.-The air supply to a carburetting-apparatus is divided into two streams I, II by a throttle valve a, the stream I, into which open the main and pilot nozzles d, e passing through a restricted conduit b heated by an exhaust pipe h, and the stream II, which may be supplied with a small quantity of fuel, passing through a large conduit c, the two streams reuniting adjacent the inlet valve k. The valve a is provided with interchangeable segments f, g, which control the cross-sectional areas of the air inlet passages, and which may be so shaped as to vary the choking effect at different throttle positions, or to vary the ratio between the cross-sectional areas of the two passages as the throttle opens. In the fully open position of the throttle valve, part of the rich mixture stream I passes through the opening m into the stream II without passing through the heater. A choke tube i surrounds the outlet pipe n of the stream I.
Patent GB-466129-A (GB)
Title: Improved apparatus for dispensing beverages or other liquids under pressure
IPC: B67D1/04
Filed: 1935-11-22
Abstract: 466,129. Dispensing beverages &c. LAYTON, K. E. Nov. 22, 1935, No. 32384. [Class 116] An apparatus for dispensing beverages or other liquids under pressure comprises a head 1 coupled to a base 2 by screws 9, a sight glass 3 and metal cylinder 6 being interposed between the head and the base, with packing washers 5, 7 at the ends of the glass to make liquid-tight joints. A valve chamber 13 communicates by way of a passage 23 with the sight glass and houses a valve 19 seating at 15 at the end of a chamber 14 of reduced diameter which opens into the spout 17. The valve has a stem 18 with a piston-like end 24 having a packing ring 25, and is urged to the closed position by a spring 22. The member 24 may be pressed by hand to open the valve and dispense liquid, or a cam lever 26 rigid with swinging links 27 may be actuated for this purpose, the cam being so formed that when the lever is operated the cam maintains the valve open and retains the lever in operated position, until the lever is released by a further actuation.
Patent GB-209726-A (GB)
Title: Improvements in wrapping machines
IPC: B65B11/44
Filed: 1923-12-28
Abstract: 209,726. Package Machinery Co., (Assignees of Smith, E. L.). Jan. 13, 1923, [Comvention. date]. Steam-cutting machines; rolling-machines.- Relates to machines for wrapping confections, and of the kind in which a wrapper is folded about an article to form a tube with its ends projecting beyond the articles which ends are twisted to complete the wrapping as described, for instance, in Specifications 105,269 and 105,541, [both in Class 94 (i), Packing &c.]. According to the Specification as open to inspection under Sect. 91 (3) (a), the wheels which feed, shape, and guide the bar of confectionery stock are of such a contour as to produce a bulging of two diametrically opposed sides and corresponding depressions on the other sides, with the object of improving the ultimate shape of the wrapped article. This subject-matter does not appear in the Specification as accepted. As shown, the machine is arranged so that the knife, which cuts the wrappers from a web, is arranged close to the confection shaping wheels, so that short wrappers may be supplied. As shown, rollers 5, 6, Fig. 2, of less axial width than diameter and of the cross-section shown in Fig. 4, advance a bar of stock horizontally along a feed table 12 and vertically downwards through the rollers 6 to a tubular guideway 14. The rollers are so shaped that bulging sides a and depressions b are produced, and the guideway 14 is of a corresponding cross-section. A revolving knife 8 severs pieces from the bar, and a plunger 9, Figs. 2 and 3, recessed at 38 to conform to the shape of the severed portion, feeds this portion with a wrapper 20 into a pocket 18 in the carrier wheel 7.
Patent GB-324506-A (GB)
Abstract: 324,506. Holden, W., and Pomfret, O. Jan. 8, 1929. Take-up motions.-In a fringing motion for a terry loom &c. a slotted arm e adjustably connected to an arm b carrying a spring-controlled pawl for engaging a wheel d on the shaft of the take-up roll is raised, when fringing is to occur, by means of a bowl f<1> and lever mechanism f, h operated by connections i, k to a dobby jack &c. A notch e<2> in the arm e is thus engaged by a projection m on the lay, the lever e is thus moved with the lay, the arm b is rocked and the take-up roll is driven quickly to form a length of fringe. Thereafter the dobby mechanism allows the lever e to drop into the normal inoperative position shown until fringe is again required. A spring k may be interposed in the dobby connections to ensure eventual engagement of the notch e<2> with the projection m after the arm e has been raised.