baber/WOPTO huggingface dataset:
Patent GB-828894-A (GB)
Title: Improvements in polymerisation
Inventor: BENNETT PETER SYDNEY
IPC: C08F20/12
Filed: 1955-03-11
Abstract: Acrylic or methacrylic or unsaturated polyesters are polymerized by adding thereto one or more substances from the following groups:-(i) drier metal salts soluble in the esters to be polymerized, e.g. cobalt naphthenate, in a quantity from 0.0001 to 0.5% by weight of metal on the reaction mixture; (ii) a mono-aryl-N-dialkylamine such as N-dimethyl or N-diethyl aniline or toluidine, N,N1-tetramethyl phenylene diamine, N,N1-tetramethyl diaminodiphenylene diamine, N,N1-tetramethyl diamino-diphenylmethane or piperidine in quantities of from 0.1 to 5.0% by weight of the reaction mixture; and (iii) organic acids, such as acrylic, methacrylic, acetic and phthalic acids in quantities of from 0.1 to 20% by weight of the reaction mixture.  Monomeric materials specified are methyl, ethyl, butyl and lauryl methacrylates, a propylene glycol maleate/phthalate polyester, and styrene and methyl methacrylate as monomers copolymerizable with the polyesters.  In one mode of operation two monomeric mixtures may be prepared, one containing substances from two of the above groups and the other containing a substance from the remaining groups and mixing the two monomeric materials when polymerization is required. In Examples 1-3 the polymerization of methyl methacrylate is described, in Example 4 cotton or glass cloth is impregnated with polymethyl methacrylate containing cobalt naphthenate and is then wetted with methyl methacrylate containing N-dimethyl aniline and glacial acetic acid, and in Example 5 a propylene glycol maleate/phthalate polyester is copolymerized with methyl methacrylate, optionally containing fillers and pigments such as mica, cotton or rayon flock and titanium dioxide.
Patent GB-1397735-A (GB)
Title: Process for the production of microorganisms
IPC: C12N1/26
Filed: 1972-02-17
Abstract: 1397735 Fermentations involving methane BRITISH PETROLEUMÀCO Ltd 14 Aug 1972 [21 Aug 1971 17 Feb 1972] 39599/71 and 7348/72 Heading C6F A continuous process for converting methane into proteinaceous material involves cultivating a methane utilizing micro-organism e.g. Methylococcus capsulatus, continuously under steady state conditions at a production rate of at least 0.81 gram (dry weight) of micro-organism per litre-hour in an aqueous broth containing nutrient salts and ammonium ions, in the presence of methane and a gas containing free oxygen, and the broth pH is maintained in the range 4.5 to 8.0 and the ammonium ion concentration is maintained in the range from 2 to below 100 milligrams per litre. The requisite amount of ammonia or ammonium hydroxide introduced may serve as the means of controlling the broth pH. Alternatively, the pH may be maintained by addition of an acid or an alkali other than ammonia or ammonium hydroxide.
Patent GB-712103-A (GB)
Title: A method of heating steel, particularly austenitic and ferritic high-percentage alloy steels
IPC: C21D6/00
Filed: 1951-03-30
Abstract: A method of heating steel, particularly austenitic or high alloy ferritic steel for forging or rolling comprises charging cold bars or billets into a furnace maintained at or above the forging or rolling temperature and discharging the bars or billets when they have attained the desired temperature.  The heating may be carried out in reverberatory or electric furnaces.  It is stated that the heating time is decreased by 96 per cent.
Patent GB-272450-A (GB)
IPC: F02M61/00
Filed: 1927-03-18
Abstract: 272,450. Sulzer FrÞres Soc. Anon. June 11, 1926, [Convention date]. Drip, preventing.-A length of pipe 4, closed at one end, is connected to the fuel supply pipe 2 between the injection valve 3 and the pump 5 to prevent drip at the valve. A check valve 15 may be provided in the closed pipe and the portion between the check valve and the closed end may be connected to the fuel supply pipe.
Patent GB-724708-A (GB)
Title: Process for improving the knock stability of gasolines
IPC: B01J23/28
Filed: 1953-03-19
Abstract: In a hydroforming process using an aluminamolybedena-fluorine catalyst (see Group III), a mixture of gasoline-hydrocarbons and hydrogen is passed over the catalyst at a temperature less than 500 DEG  C., preferably in the range 465-490 DEG  C. under a pressure of 3-20 atmospheres.  In example 1, a naphtha having an octane number of 28 and an aromatic content of 17 per cent by weight, naphthene content 25 per cent by weight and paraffin content 58 per cent by weight, obtained from Middle East crude oil by direct distillation, is passed over the catalyst at a rate of 0.6 kilograms per litre of catalyst per hour together with 1000 litres of hydrogen per kilogram of naphtha at a pressure of 15 atmospheres for nine hours.ALSO:Fluorinated catalysts for use in hydroforming processes contain at least 7 parts by weight of molybdena or molybdenum sulphide calculated as MoO3 and less than 1 part (preferably from 0.3-0.7 parts) by weight of fluorine for each 100 parts by weight of alumina, said alumina having been obtained by precipitation from an aluminium salt solution and said fluorine having been incorporated in the catalyst either before or after impregnation with a molybdenum compound by treatment with a dilute solution or gas containing not more than 1 per cent of hydrogen fluoride or an equivalent amount of a substance producing hydrogen fluoride, in an amount such as to provide less than 1 part by weight of fluorine for each 100 parts by weight of alumina.  In Example 1, aluminium hydroxide was precipitated by adding aqueous ammonia solution to aluminium chloride solution such that the final pH was in the range 8-8.5 and then washed to remove all the chloride ions.  The resultant slurry was treated with hydrogen fluoride to introduce fluorine into the catalyst and then impregnated with ammonium molybdate solution, the product being calcined at 500 DEG C. The product which contained 10 per cent by weight of molybdena, and 5 per cent of fluorine was broken up into pieces of from 3-6 mm. in size and was then used as catalyst in a hydroforming process (see Group IV (b)).
Patent GB-1508702-A (GB)
Title: Sewing machine
IPC: D05B77/00
Filed: 1976-02-26
Abstract: 1508702 Sewing machine, work support BROTHER KOGYO KK 26 Feb 1976 [4 March 1975] 07684/76 Heading DIG A sewing machine having a base 11, a lower arm 12 defining a work supporting surface 12a has a support plate 29 movable between a first upper position (Fig. 1 not shown) where it provides a continuation of the said work supporting surface and a second position (Fig. 2) in which it is lower than the work supporting surface, there being a pivotal connection between the support plate and the base to allow the movement. The pivotal connection comprises a connection plate 24 pivoted at 31 to the support plate 29 and at 22 to a base plate 16 extending from the base 11, an overcentre spring 26 urging the connection plate towards either of its extreme positions corresponding to the positions of the support plates. A pin 33 on the latter engages in either recess 32 or recess 35 according to the position shown. Rubber feet 17, 36 are provided on the base plate 16 and the plate 29. A pivotable handle 38 on the upper arm 15 of the machine can extend through an apertured hood or case (37, Fig. 7 not shown).
Patent GB-294863-A (GB)
Title: Improvements in or relating to installations for the dry cooling of coke
IPC: C10B39/02
Filed: 1928-03-13
Abstract: 294,863. Kilburn, B. E. D., (Sulzer FrÞres Soc. Anon.). March 13, 1928. Addition to 294,851. Cooling discharged materials.-The coke-cooling apparatus according to the parent Specification is modified by constructing the chamber d of cylindrical form with double walls between which the cooling water is circulated, the annular water space thus formed being connected to the boiler-drum f by short conduits n. The coke is discharged from the retorts into a skip b which is lowered on to a wheeled truck o adapted to be moved on rails l into the chamber d, the latter being closed during the cooling operation by a door mounted on the truck o.
Patent GB-767381-A (GB)
Title: Method of and apparatus for heat treating the teeth of gear wheels
IPC: C21D9/32
Filed: 1955-03-16
Abstract: 767,381. Heat-treating gear wheels. PEDDINGHAUS, P. C., and PEDDINGHAUS, W., [trading as PEDDINGHAUS, P. F. (Firm of)]. March 16, 1955 [March 20, 1954], No. 7706/55. Class 72 A method of heat treating the teeth of gear wheels consists in rotating the gear wheel about its axis and heating the teeth by one or more burners playing upon the periphery of the wheel, the power of the burner or one or more of the burners being throttled as soon as the addenda of the teeth have reached the hardening temperature and the throttling being continued until uniform heating of the teeth to the required depth is obtained. The teeth are then quenched. In the apparatus shown, the gear wheel 5 is rotated about its axis and the teeth are heated by burners 1-4 fed with oxygen and combustible gas through magnetically operated valves 6-9. The temperature of the teeth addenda is measured by a photo-electric cell 18 which is connected to measuring instruments 27, 28 controlling relays 29, 30. When the temperature of the teeth addenda exceeds the required temperature by 10‹C., the relay 30 operates and opens the relay 14 and the delayed-action relay 15; this causes the valve 7 and, after a short delay, the valve 8 to close thus reducing the supply to the burners. If the temperature of the teeth addenda falls below the required temperature by 10‹C., the relay 29 operates and the relay 30 opens so that relays 14, 15 are again closed and valves 7, 8 opened, thus restoring the fuel supply to the burners. In an alternative arrangement of gas supply described, when the desired hardening temperature is reached, two of the burners are shut off completely and the others remain at full power. A time switch may be incorporated in the circuit so that the wheel is lowered into the quenching bath or sprinkled wiht quenching liquid when the teeth roots reach the hardening temperature.
Patent GB-1419135-A (GB)
Title: Xanthogen-modified chloroprene polymers
IPC: C08L7/00
Filed: 1973-02-16
Abstract: 1419135 Xanthogen-modified chloroprene polymers E I DU PONT DE NEMOURS & CO 16 Feb 1973 [18 Feb 1972] 7797/73 Heading C3P Xanthogen-modified chloroprene polymers are produced by polymerization by conventional aqueous emulsion techniques in the presence of a dialkyl xanthogen disulphide, and adding to the polymer latex at a time when the desired degree of polymerization has been reached at least 0À1 wt. per cent (based on monomer) of a compound of formula wherein R is hydrocarbyl, 2-thiazolyl optionally substituted by one or two hydrocarbon radicals, 2-benzothiazolyl or and R 1 , R 2 , R 3  and R 4  are each alkyl, cycloalkyl or aralkyl radicals any of which may contain substituents which do not detrimentally affect the polymer, or R 1  and R 2  or R 3  and R 4  together with the nitrogen atom to which they are attached can form a saturated ring. The preferred compound is 2-(morpholinothio)benzothiazole. In Example 1, polychloroprene and chloroprene/dichlorobutadiene copolymer are produced, and 2-(morpholinothio)benzothiazole added after short-stopping but before removal of excess monomer. In Example 2, sol. polychloroprene and gel polychloroprene (containing 3% ethylene glycol dimethacrylate co-monomer) are separately prepared, the short-stop added to the sol. polychloroprene including 2- (morpholinothio)benzothiazole, and the two latices are then mixed prior to removal of unreacted monomer. The products have an improved odour when vulcanized as compared with conventional products. The process of Specification 1,414,393 is disclaimed.
Patent GB-212125-A (GB)
Title: Improvements in safety devices for mine cages, passenger lifts and the like
IPC: B66B5/18
Filed: 1923-03-19
Abstract: 212,125. Goodman, H. March 19, 1923. Catch gear of mine-cage type.-Wedges C, Fig. 2, slidably mounted in guides C<2> are forced into engagement with the guides B, Fig. 1, when the hoisting rope breaks. Tongues C<3> at the sides of the wedge enter between the guides Band corresponding members A<2> on the cage and prevent spreading of the former. Rollers K mounted on the guides A<2> engage the guides B. Each wedge C is connected by a link F<2> to a block F which is attached to a rod E connected to the hoisting rope D. The rod E is slidably mounted in a cylinder E<2> which is supported by arms F<2> attached to the members A<2>. A spring G is placed between the cylinder and block, and springs G<2> connect the links F<2> to the cage. Guide pins F' attached to the block pass through holes in the flange E<4> of the cylinder E<2> and are of such length that they are just disengaged when the brakes are applied. As a slight angular movement of the block will occur owing to the clearances provided at the joints of the links F<2>, the pins will no longer register with the holes and the flange &c. cannot descend to release the brakes. Swells B<2> formed in the bottom of the guides B render more certain the action of the wedges. In a modification the_wedges C are attached to rods J, Fig. 4, which are acted on by a conical member H attached to the rod E.
Patent GB-1489482-A (GB)
Title: Method of forming coloured oxide film on aluminium or its alloy by anodizing
IPC: C25D11/06
Filed: 1975-02-25
Abstract: 1489482 Colour anodizing aluminium RIKEN LIGHT METAL INDUSTRY CO Ltd 25 Feb 1975 [22 May 1974] 7857/75 Heading C7B A silver, amber or bronze coloured oxide film is formed on an Al (alloy) surface by anodizing it in an aqueous solution containing 2À5 to 2À7 wt. per cent oxalic acid, 0À15 to 0À17 wt. per cent sulphuric acid and 1À8 to 2À0 g/l Al ions, with voltage from 20 to 55 volts and solution temperature from 25 to 40‹C. The mean current density on the Al surface is preferably maintained constant in the range of 0À5 to 2À5 A/dm<SP>2</SP> by controlling the voltage and either the temperature or Al ions content. D.C., superimposed A.C.-D.C., or an incompletely rectified or a pulse wave current may be used. Al alloys are specified containing Cu, Fe, Si, Mn, Mg, Zn, Cr and Ti.
Patent GB-1500472-A (GB)
Title: Hoisting gear
IPC: B66F3/36
Filed: 1976-02-27
Abstract: 1500472 Guiding elevators H A V JOHANSSON 27 Feb 1976 07915/76 Heading B8L A lifting arrangement for a bath tub 6 comprises a fixedly mounted vertical hydraulic actuator ram 2, sleeves 4a slideable along vertical guide members 3 fixedly mounted at opposite sides of the ram, a connecting device 5 connecting the sleeves 4a to the ram piston 2c and coupling members 4b connecting the sleeves 4a to the bath tub 6. The device 5 is connected to the sleeves 4a at right angles to the connection between the coupling members 4b and the sleeves, the upper member 4b being in tension and the lower members 4b being in compression due to the cantilever applied load of the bath tub 6. Each of the guide members 3 is of rectangular cross-section and includes metal corner plates slidingly engaged by plastic bearing elements projecting inwardly from the four walls of the rectangular tubular sleeve 4a. Upward movement of the sleeves is limited by abutments at the tops of the members 3. The whole lifting arrangement mounted on a frame 1 may be encased as indicated in broken lines.
Patent GB-587235-A (GB)
Title: Improvements in or relating to collapsible pit-props
IPC: E21D15/12
Filed: 1945-04-24
Abstract: 587,235. Pit - props. APPLEBY -FRODING - HAM STEEL CO., Ltd., and HENDERSON, H. M. April 24, 1945, No. 7924/44. [Class 20 (ii)] A collapsable pit-prop having a head portion 2 connected to a strut portion 1 by side plates 3 which are pivotally mounted at 4, 5, the pivots having sufficient clearance to prevent them taking any load when the prop is in use, and a locking bolt 8, has the complementary surfaces of the bearing pads 6, 7 of arcuate form and set at an angle such that the chord of the arc is at 5‹ to 15‹ to the normal to the centre line of the prop. The prop is thus stable under load, no load being taken by the locking means, but can be easily collapsed on release of the locking means. To release the locking bolt 8, the handle 15, Fig. 2, is timed to cause the nose 13 of a cam 14 to engage a shoulder 12 on the bolt and depress the bolt against the pressure of a loading spring 11. Further movement of the handle 15 causes a second nose 25 on the cam to press against the bearing pad 7, on the head, and initiate movement of the head. A locking pin may be placed through a hole 18 in the strut and a slot 16 in the bolt to prevent accidental release of the prop. The handle 15 is pivotally mounted in plates 23, Fig. 1, which extend above the pads 6 to prevent the head passing beyond its working position, in axial alignment with the strut. The head and strut are made from H girder, the web of which, at the ends of the prop, is cut away and the flanges bent over.
Patent GB-600905-A (GB)
Title: Improvements in or relating to polymerisation reactions
IPC: C08F14/02
Filed: 1943-05-20
Abstract: Vinyl halides and/or vinylidene halides, alone or in admixture p with an organic compound containing the group CH2=C< other than a vinyl ester of a lower carboxylic acid, are polymerized in the presence of crotonic acid by heating at temperatures between 30 DEG and 70 DEG  C.  Instead of crotonic acid, a compound decomposable to crotonic acid under the reaction conditions may be utilized. The preferred concentration of acid is from 0.1 to 10 per cent by weight of the monomers.  The polymerization is preferably effected in the presence of a peroxidic catalyst particularly an unsaturated aliphatic acid peroxide, in preferred amounts of 0.05 to 1.0 per cent of the monomers.  Polymerization may be carried out by any known means, but when emulsion polymerization is employed, the pH of the aqueous phase is adjusted by means of crotonic acid alone or together with its salts.  In examples: (1) and (2) vinyl chloride is emulsified with the sodium salt of sulphated lauryl alcohol in aqueous media together with crotonyl peroxide, methanol and crotonic acid and then polymerized.  In example (3) vinyl chloride and n-propyl acrylate are similarly treated.  Specification 561,800 is referred to.
Patent GB-721477-A (GB)
Title: 4-aminobenzoic acid ester compounds of penicillin
IPC: C07D499/24
Filed: 1952-03-31
Abstract: Penicillin compounds of general formula <FORM:0721477/IV (b)/1> in which R represents an amino group or a lower alkyl group containing up to 3 carbon atoms and Pc represents penicillin in the acid form, are prepared by reacting a salt of a basic ester of a substituted 4-aminobenzoic acid of general formula <FORM:0721477/IV (b)/2> in which R has the meaning above, with a salt of penicillin using water as a solvent, or by reacting the free basic ester of a substituted 4-aminobenzoic acid of the above formula with the free penicillin acid in the presence of an organic solvent.  The penicillin salt may be the sodium salt, and the basic ester salt the hydrochloride. Specified organic solvents are ether, ethyl acetate, butyl acetate or mixtures thereof.  Examples describe the preparation of penicillin compounds of the above general formula wherein R is (a) amino, and (b) methyl.
Patent GB-578080-A (GB)
Title: Improvements in or relating to thermal insulating materials suitable for insulating aircraft engine exhaust manifolds and the like
IPC: C04B30/02
Filed: 1942-06-18
Abstract: 578,080. Nonconducting coverings for heat and sound. WORTMAN, B., BLOCH, O., and MATTHEWS, C. June 18, 1942, Nos 8368 and 17095. [Class 64 (ii)] [Also in Group XXIII] A heat-insulating and corrosion-resisting material is produced by firing an intimate mixture of glass, asbestos (chrysotile) and quartz, all in finely divided form. Ground asbestos and sand are mixed with an aqueous suspension of glass frit particles and the proportion of asbestos to frit may vary within wide limits. The mixture may be applied to a surface in layers, each successive layer having a progressively increasing proportion of asbestos to frit. The proportion of sand, also, may increase in successive layers. The coatings are allowed to dry and are then fired for a short time at a temperature of about 850‹C. Such a coating may be applied to the inner surfaces of exhaust manifolds of internal combustion engines or of other conduits for passing hot corrosive fluids. Compositions of suitable glasses are given in the Specification.
Patent GB-296755-A (GB)
Title: Improvements in charge forming and supplying devices for internal combustion engines
IPC: F02M27/02
Filed: 1928-03-19
Abstract: 296,755. Balachowsky, D., and Caire, P. Sept. 7, 1927, [Convention date]. Vaporizers, external.-A charge-forming device for internal-combustiun engines comprises a catalyzing chamber 1 heated by exhaust gases passing through a casing 2, and supplied with a rich mixture of fuel and air under pressure by a pump or fan, the catalyzed mixture passing through a conduit 4 to a mixer 5 to which extra air is admitted through a conduit 8, the final mixture passing through a conduit 9 to the engine 12. The mixer 5 comprises a spiral coil 6 provided with a tangential inlet 7, the coil 6 opening into a central chamber containing a power-driven impeller 11. The air inlet 8 of the mixer may be provided with a throttle valve which may be actuated independently of, or may be interconnected with, a throttle valve 10 situated in the outlet 9. Compressed air, a mixture of air and oxygen, or organic products containing oxygen may be supplied to the mixer 5. In a modification, two supplies of rich mixture, which may contain different fuels, are supplied to the one catalyzing chamber. According to the Specification as open to inspection under Sect. 91 (3) (a), the catalyzing chamber may be heated by burners or electrically and may be supplied with fuel alone or mixed with exhaust gases, and the mixer 5 may be provided with fixed blades and may be heated electrically at starting. This subject-matter does not appear in the Specification as accepted.
Patent GB-1177628-A (GB)
Title: Heptachloroindole
Inventor: CHAMBERS RICHARD DICKINSON
IPC: C07D209/30
Filed: 1966-02-25
Abstract: 1,177,628. Heptachloroindole. IMPERIAL SMELTING CORP. (N.S.C.) Ltd. 13 Feb., 1967 [25 Feb., 1966], No. 8369/66. Heading C2C. The invention comprises heptachloroindole and a process for the preparation thereof which comprises chlorinating N-acetyl indoline 2-sulphonic acid or the sodium salt thereof in two stages, the first stage being effected using chlorine as the chlorinating reagent to give trichloroindoles and the second chlorinating stage being carried out using phosphorus pentachloride in the absence of water. In the example, the starting material is obtained by reacting indole with sodium bisulphite to obtain indoline-2-sodium sulphonate and reacting the latter with acetic anhydride.
Patent GB-512333-A (GB)
Title: Improvements in or relating to electric motor control systems
IPC: B60L15/12
Filed: 1938-03-18
Abstract: 512,333. Control of D.C. motors. GENERAL ELECTRIC CO., Ltd., and CROFT, E. H. March 18, 1938, No. 8402. [Class 38 (iii)] Regenerative and non-regenerative braking.- A contactor B, arranged to connect a motor 1 in a rheostatic braking circuit is operated by a coil BW connected during regenerative braking across the motor in series with a resistance 19, so that upon the occurrence of excess voltage during regeneration the contactor completes the rheostatic braking circuit, while for normal rheostatic braking the coil BW is energised from the supply independently of the resistance 19 by closure of contacts BCC on the braking controller. When the contactor B operates on excess voltage the resistance 19 is short-circuited by auxiliary contacts BNO. Means may be provided to prevent operation of the contactor B upon the occurrence of over-voltage during motoring.