baber/WOPTO huggingface dataset:
Patent GB-927794-A (GB)
Title: New or improved lubricants
Filed: 1959-10-28
Abstract: A jet turbine lubricant comprises a mixture of (a) an alkanol diester of an alkanedioic acid, the acid generally containing 6-10 carbon atoms and the alkanol, preferably an n-alkanol, having 8-10 carbon atoms, and (b) a polyol having two or more (preferably three) methylol groups attached to a quaternary carbon atom esterified with an alkanoic acid having at least 5, preferably 5-8, carbon atoms, or with a mixture of alkanoic acids having an average of at least 5, preferably 5-8, carbon atoms, which mixture may contain acids having individually 2-12 carbon atoms.  (a) suitably comprises at least 25%, preferably 25-60%, by weight of the mixture, while (b) comprises at least 25%, preferably 40-70%, by weight; (a) is preferably dioctyl azelate or dioctyl adipate and (b) is preferably a :a :a -trimethylolpropane esterified with approximately equimolecular proportions of pelargonic and valeric acids.  The composition may contain 0,1-2% by weight of an oxidation inhibitor such as phenyl-a -naphthylamine, a dialkyl selenide, or preferably phenothiazine.  An anti-wear agent such as a triaryl phosphate, notably tricresyl phosphate, is also suitably present in an amount of 0,5-5% by weight; anti-foam additives, extreme pressure additives and metal deactivators may also be incorporated.ALSO:Polyols having two or more (preferably three) methylol groups attached to a quaternary carbon atom are esterified with an alkanoic acid having at least 5, preferably 5-8, carbon atoms, or with a mixture of alkanoic acids having an average of at least 5, preferably 5-8, carbon atoms, which mixture may contain acids having individually 2-12 carbon atoms. Suitable polyols are a :a :a -trimethylolpropane, a :a :a -trimethylolethane, neopentyl glycol, pentaerythritol, 2-butyl-2-ethyl-1:3-propanediol, and 2:2:4-trimethyl-1:3-pentanediol. Normal acids or acids with no more than 2 carbon atoms in the side chain are preferred.  The esterification is preferably carried out without a catalyst; if a catalyst, e.g. p-toluenesulphonic acid, benzenesulphonic acid, zinc salts or lead salts, is used, it is used in amounts of 0.05-1% by weight of the reactants.  The esterification is performed at 180-240 DEG C. for 6-18 hours, water being removed by volatilization, preferably in the presence of a liquid hydrocarbon as azeotroping agent.  In Example I, 1 molecular proportion of a :a :a -trimethylolpropane is esterified with 1 1/2 molecular proportions of pelargonic acid in the presence of a little xylene at 364 DEG F. to 487 DEG F. for 3 hrs. 1 1/2 molecular proportions of valeric acid are then added and the mixture heated at 317 DEG F. to 420 DEG F. for 3 hrs., and then at 444 DEG F. for a further 13 hrs.  Excess acid and xylene are flashed off at 440 DEG F. and 10 mm. pressure (Hg.) for 2 hrs. and the resulting stripped ester washed with aqueous caustic soda and then with salt solution.  The ester is then dehydrated, decolourized with carbon, and filtered.
Patent GB-409452-A (GB)
Title: Improvements in or relating to the recording of associated sound and picture record films
IPC: G03B31/00
Filed: 1932-12-23
Abstract: 409,452. Recording sound in association with kinematography. REGAN, G, P., and DAY, A. R., 463, Oakland Avenue, Oakland, California, U.S.A. Dec. 23, 1932, No. 36541. [Class 40 (ii).] A method of producing talking films made by actors of one nationality apparently speaking the language of another nationality consists in recording on a sound film the words as spoken or sung in the language which is to accompany the projected picture (such original record being preferably made by a person speaking his native language), making an arbitrary code version in sounds of which the utterance simulates the lip movements corresponding to the actual words in the original record, and subsequently photographing the actions and lip movements of an actor who, as he acts, enunciates the code version, whilst simultaneously the original sound record is re-recorded on a second sound film in phonetic synchronism with the lip movements of the actor ; the synchronized picture and sound film are finally combined to form a positive for projection and sound reproduction. In carrying the invention into effect, a kinematograph camera A, a soundfilm recording machine B, and a machine C through which the original sound-film E is passed, are driven simultaneously by synchronous motors 2, 3, 4. The machine C is associated with photo-electric apparatus 20, 21, operatively connected with optical recording apparatus 14 of the oscillograph type, whereby the record on the film E is copied on to the film G passing through the machine B as the movements of the actor on the stage D are being photographed by the camera A. The film E is not driven continuously, but the motor 4 operates through a magnetic clutch 24 which is actuated under the control of a microphone 26 in such a manner that the film E is started each time the actor utters one of the code words and is stopped immediately after the corresponding word on the film E has been re-recorded on the film G. This effect is brought about by relays 28, 37, suitably arranged in the valve circuits of the microphone and of the photo-electric cell 20. The optical system used in connection with the oscillograph 14 is described.
Patent GB-522632-A (GB)
Title: Improvements in and relating to electric motor control systems
IPC: H02P25/26
Filed: 1938-12-15
Abstract: 522,632. Control of A.C. motors. BRITISH THOMSON-HOUSTON CO., Ltd. Dec. 15, 1938, No. 36579. Convention date, Dec. 15, 1937. [Class 38 (iii)] Braking.-The disconnection of a motor 10, when it comes to rest after " plugging," is effected under the control of a relay 21 having opposing coils 21b, 21c, energized respectively through rectifiers 27, 28, from the secondary and primary windings of the motor. Upon operation of a switch 13, a forward contactor 12 is energized and the motor 10 is connected to run in the forward direction. Simultaneously a contactor 18 is energized to short circuit resistance 17 on the secondary circuit of the motor; and a time relay 40 is effective to energize a contactor 20 which short-circuits accelerating resistance 19. When a stop button 16 is depressed a relay 15 is actuated to de-energize the contactor 12 and make reverse connections for the motor by energizing a contactor 14. The contactors 18, 20, also are de-energized to reinsert resistances 17, 19. Closure of the contactor 14 connects the relay coil 21b through a rectifier 27 to the secondary circuit of the motor. The relay 21 is thereupon operated and maintains the circuits independently of the push button 16, and also closes its contacts 21b to connect its second coil 21c through a rectifier 28 to the primary circuit of the motor. At zero motor speed the coils 21b and 21c balance and the relay opens its contacts to de-energize the relay 15 which opens the contactor 14. In order to re-energize the forward contactor 12 the master switch must first be opened, to release a relay 32, and then reclosed. In a modification the relay 21 comprises a pivoted arm acted on by the coils 21b, 21c, on opposite sides, of the pivot.
Patent GB-1437428-A (GB)
Title: Cutting tools
IPC: E21B10/48
Filed: 1973-08-02
Abstract: 1437428 Grinding; dressing; cutting tools ERNST WINTER & SOHN 2 Aug 1973 [4 Aug 1972] 36719/73 Headings B3B B3C B3D and B3K [Also in Division B5] A rotatable or reciprocatable tool comprises a plurality of cutting members uniformly distributed on its periphery. Each member has a geometrically defined cutting edge or edges, consists of a crystalline diamond material or cubic crystalline boron nitride material and is connected to a support attached to the base of the tool, the cutting members being distributed so that their cutting edges project beyond the base of the tool. The cutting members may consist of a diamond layer 3, Fig. 1, on a support 2 of sintered carbide on which the layer 3 is compressed by high pressure and temperature using a catalyst in one operation, the layer having 80% diamond and the remainder being the catalyst. The layer may be arranged parallel to the cutting direction SR, in front of the support or in front of the support and oblique to the cutting direction. The support is chamfered so as to provide a clearance. In another embodiment, the diamond layer has a plurality of cutting edges 5, Fig. 4, formed on cutting units 6, the units having a length of, for example, 1 mm. in the cutting direction SR. The units or the members may be arranged in longitudinal and transverse rows, which may be oblique. The cutting members 1 may be arranged in three rows on the outer peripheral surface HS, Fig. 10, of a cup-shaped grinding wheel, the annular surface NS having a grinding layer of known type. In another embodiment, the members 1 are arranged on the entire periphery of a dressing roller, Fig. 12, each member having a plurality of pyramid-shaped cutting units 6 formed on the backing material 7 of diamond on a sintered carbide support 2 stuck or soldered on to the base 8 of the roller. The members may also be mounted on the base of a hollow drill and project axially from the drill. In a further embodiment, the members 1, Fig. 17, are mounted on the end face of a grinding roller having a conventional grinding layer 10.
Patent GB-962869-A (GB)
Title: Laminates
IPC: B32B27/00
Filed: 1962-09-27
Abstract: 962,869. Laminates. AMERICAN CYANAMID CO. Sept. 27, 1962 [Jan. 22, 1962], No. 36777/62. Heading B5N. Decorative laminates suitable for outdoor use comprise a base of fibrous material, for example Kraft paper sheets, some of which may be creped, impregnated with phenolic resin, a print sheet of α-cellulose, paper or the like impregnated with melamine- or other aminotriazine-aldehyde resin, and a surface layer of non-porous methyl methacrylate polymer or copolymer, the layers being superposed and bonded together with heat and pressure. Double-faced laminates may be made by adding similar layers to the underside of the base layer. Single-faced laminates may be bonded to substrates such as glass fibre-reinforced polyester sheets, wood, hardboard, woodwaste or particle board, plywood, asbestos-cement board or plaster board. The phenolic resins used may be derived from phenol, cresols, xylenols, or tertiary alkyl phenols and formaldehyde, acetaldehyde, propionaldehyde, benzyl aldehyde or furfural, or mixtures of these materials, with or without aldehyde-reactable substances such as urea, thiourea, substitution or not. Aminotriazines, e.g. melamine, or lignin derivatives. The aminotriazine resin used may, apart from melamine, be mono-, di- or trimethyl- or other substituted melamines, guanamines such as formoguanamine, acetoguanamine or benzoguanamine, or mixtures of these materials, reacted with formaldehyde, acetaldehyde, propionaldehyde, butyraldehyde, benzaldehyde, or aldehyde-yielding materials such as paraformaldehyde or hexamethylenetetramine. These resins may also contain plasticizers such as dibutyl phthalate, dioctyl phthalate, low molecular weight polyethylene glycols, α-alkyl- D - glycosides or N - methylol - p - toluene - sulphonamide. The surface sheet may comprise a copolymer of methylmethacrylate with styrene, a substituted styrene such as α-methylstyrene, α-ethylstyrene, o-methylstyrene, or pethylstyrene, or with ethylmethacrylate, propylmethacrylate, butyl-methacrylate, acrylonitrile, methacrylonitrile, acrylamide, methylacrylate, ethyl-acrylate, or butyl-acrylate.
Patent GB-1066945-A (GB)
Title: Methods of manufacture of electrical resistors
Inventor: HASEGAWA TAKESHI
IPC: H01C17/20
Filed: 1963-09-18
Abstract: A method of manufacturing a resistor comprises subjecting an element of porous glass to a treatment in which at least some of its pores are filled with a conductive material which consists of carbon, metal or a carbon or metal-containing substance and maintaining the element for a predetermined period of time in a non-oxidizing atmosphere at a temperature at which its pores shrink so that they are reduced to or almost to zero thereby retaining conductive material in at least some of the pores of the glass element.  Example 1.  A rod of porous glass is heated for one hour at a temperature of 1100 DEG  C. in an atmosphere of town gas.  The carbon separated by the pyrolysis permeates into the glass and also forms a film on the glass surface. Alternative gases or vapours are methane, propane, benzole, alcohol or ketone.  Example 2.  A porous glass rod is impregnated with a solution containing divinyl benzene and heated in an atmosphere of nitrogen, argon or hydrogen.  Alternatively, a thermo-plastic resin such as polyacrylonitrile, polyethylene, or polystyrene or a thermosetting resin such as phenol resin, silicon resin containing carbon or epoxy resin, may be used as the carbon containing substance.  Example 3.  A porous glass rod is impregnated with an ethyl alcohol solution of tungsten hexachloride and heat treated in an atmosphere of benzole vapour.  Other metal chlorides may be used. Example 4.  A porous glass rod is impregnated with an ethyl alcohol solution containing CoCl2.6H2O and phenol resin and subsequently heat treated in a non-oxidizing atmosphere. Other metal chlorides may be used.  Example 5.  A porous glass plate is coated with a tantalum film by cathode sputtering and subsequently heat-treated in a hydrogen atmosphere.  The Specification describes the electrical and other properties of the resistors made as above.
Patent GB-813479-A (GB)
Title: An improved process for preparing organotin compounds
IPC: C07F7/22
Filed: 1957-11-26
Abstract: Organotin compounds are prepared by reacting an organomagnesium chloride (as defined) with an organotin oxide of formula RR1SnO or (R2Sn)2O wherein R and R1 may be the same or different and represent substituted or unsubstituted hydrocarbon radicals and when substituted contain no functional groups which are reactive under the reaction conditions with magnesium or the organomagnesium chloride. The organomagnesium chloride is defined as any well-known Grignard reagent prepared in alkyl ether solution, or the aromatic, vinylic and heterocyclic magnesium chlorides prepared in solution in tetrahydrofuran or equivalent cyclic polymethylene oxide or in ethylene polyether solution.  Among others, the following organomagnesium chlorides are specified: ethyl, tert-butyl, octyl, 2,2-difluoroethyl, octadecyl, benzyl, allyl, b -methallyl, decyl, dodecyl, isopropyl, amyl, phenyl, pentachlorophenyl, o-tolyl, xylyl, vinyl, 4-methyl-1-penten-2-yl, buten-3-yl oleyl, cyclohexenyl, cyclopentyl, p-anisyl, tri-chlorobiphenyl, b -naphthyl, diethylaminophenyl, b -thienyl, 6-quinolyl, 5-chlorothienyl and chloromethylquinolyl magnesium chlorides.  A list of suitable organotin oxides is given.  The process is usually carried out by suspending or dissolving the organotin oxide in an inert organic solvent and adding the Grignard reagent, but in some cases it is preferred to add the organotin oxide to the Grignard reagent in a solvent.  Solvents specified include substituted and unsubstituted tetrahydrofuran, tetrahydropyran, heptane, hexane, pentane, octane, isooctane and xylene, or if desired, a mixed solvent (tetrahydrofuran and a hydrocarbon) may be used.  In an example, dibutyltin oxide is dissolved in a commercial hydrocarbon solvent (mainly heptane) and a solution of vinyl magnesium chloride added.  After refluxing and standing overnight the mixture is hydrolysed, the organic phase decanted, dried and distilled to yield dibutyl divinyltin.  Numerous other examples are given.
Patent GB-445591-A (GB)
Title: Improvements in the manufacture of rubber products
IPC: C08L7/00
Filed: 1934-12-22
Abstract: A modification of the process for preparing plastic vulcanizable compositions from fine rubber powder according to the parent Specification comprises employing as the rubber component rubber dust of a particle size of less than 75m .  The rubber dust may be obtained by the method described in Specification 438,230. If the resulting composition is to be applied to a permanent support, the support may be coated first with a suitable adhesive, e.g. asphalt, tar, bitumen or a solution or emulsion thereof, or a solution or dispersion of rubber which may be obtained from rubber dust of a particle size less than 75m  and which may contain a vulcanizing-agent and an accelerator.
Patent GB-1078576-A (GB)
Title: Improvements in and relating to centrifugal pumps
Inventor: GATES ROGER JAMES
IPC: F04D29/66
Filed: 1964-09-09
Abstract: 1,078,576. Fluid-pressure servomotor systems. HAMWORTHY ENGINEERING Ltd. Nov.17, 1965 [Sept.9, 1964], No.36990/64. Heading G3P. [Also in Division F1] To prevent cavitation in a centrifugal pump, the output flow is passed through a flowmeter and a regulating valve and the valve is controlled in accordance with the flow in such a manner that the valve moves towards an open position in response to increased flow and to a closed position in response to a decrease flow. When the flow is steady, the valve slowly opens so that the control is always searching for the onset of cavitation. As described, the valve is fluid operated under the control of solenoid valves which are actuated by pressure switches and relays responsive respectively to "flow falling" "flow steady" and "flow rising".
Patent GB-641647-A (GB)
Title: Improvements in or relating to apparatus and method of moulding plastic materials
IPC: B29C43/00
Filed: 1946-12-17
Abstract: 641,647. Molding polyamide resin. POLYMER CORPORATION. Dec. 17, 1946, No. 37101. Convention date, Oct. 24, 1945. [Class 87 (ii)] Apparatus for moulding rods comprises a tube 4 into which polyamide is charged, a tubular mould 5 adapted to be telescoped into the tube 4 by means of a plunger 3 thus forcing the polyamide into the tube 5, and an annular sealing member 8 between the tube 4 and the mould tube 5. The sealing member 8 is secured to the tube 5. A plug 7 amide into the tube 5, above the polyamide and at the end of the moulding operation abuts against the plunger 3. The lower end of the cylinder 4 is closed by a plug 6. The plastic is initially melted by immersion of the apparatus in a heating bath and is also heated by an electric heater 10 during moulding. A vent 9 for escape of air is provided at the top of the tube 5. The plugs 6, 7 have a coefficient of thermal expansion higher than the tubes in which they fit to ensure a close fit. The plug 7 may be of metal, alloys or a synthetic plastic such as polytetrafluoroethylene. The tube 5 may be split longitudinally and held together by rings.
Patent GB-949253-A (GB)
Title: Isocyanate polymers
Inventor: FRANCE HAROLD
IPC: C08G18/79
Filed: 1961-10-17
Abstract: The invention comprises polymers of tolylene diisocyanate having the isocyanurate ring structure which contain 13% to 15% isocyanate groups and not more than 1.25% of free tolylene diisocyanate based on the weight of the polymer. The polymers are obtained by heating tolylene -2:4-, -2:5- or -2:6- diisocyanate, or mixtures thereof, either alone or in a solvent, with a basic catalyst e.g. an aliphatic tertiary amine, an alkali metal or alkaline earth metal oxide, hydroxide carbonate, alcoholate or phenate, an alkali metal salt of an enolisable compound or a metallic salt of a weak carboxylic acid; a co-catalyst e.g. a mono-N-substituted carbamic ester, may be used. Examples are given. Specification 920,080 is referred to.
Patent GB-1153545-A (GB)
Title: Method of Obtaining Sulphur Dioxide-Air Mixture
Inventor: BOGDANOV LEONID ALEXANDROVICH
IPC: C01B17/54
Filed: 1967-08-14
Abstract: 1,153,545. Sulphur dioxide-air mixtures. TSENTRALNY NAUCHNO - ISSLEDOVATELSKY I PROEKTNO - KONSTRUKTORSKY KOTLOTURBINNY INSTITUT IM I. I. POLZUNOVA. 14 Aug., 1967, No. 37240/67. Heading C1A. A mixture of SO 2  and air is prepared by effecting combustion of sulphur or sulphur-containing material to SO 2  at an excess air coefficient α = 1À0 to 1-6 and introducing additional diluent air into the combustion products to obtain the required concentration of SO 2 . The flow of combustion products may be cooled by heat exchange means prior to the introduction of the diluent air.
Patent GB-877537-A (GB)
Title: Photographic camera with coupled photoelectric exposure meter
IPC: G03B7/06
Filed: 1957-11-29
Abstract: 877,537. Photographic cameras. ZEISS IKON A. G. Nov. 29, 1957 [Nov. 30, 1956; March 6, 1957; March 23, 1957], No. 37336/57. Class 98(1). In a photographic camera having a built-in exposure meter and a cam and follower mounted in the objective housing for mechanically transmitting a measure of the deflection of the meter pointer to a diaphragm aperture and / or shutter speed adjusting member, the cam is so shaped as to compensate for the non-linearity of the relationship between the diaphragm or shutter speed scale and the response of the meter to the incident light. As shown, the diaphragm is controlled by two independently rotatable rings 21, 22, one 22 being coupled to follower 4 of photoelectric exposure meter 1 and the other 21 to shutter speed setting ring 15 which carries index 16 indicating the shutter speed on fixed ring 17 and the diaphragm aperture on ring 23. Manual adjustment of ring 23 turns ring 22 and ring 25 which is coupled to ring 23 by a tooth on member 29 resiliently urged into engagement with one of a number of notches 32 in ring 23. On disengagement, rings 23, 25 are relatively rotatable to set the film speed against mark 27. The film speed may alternatively be allowed for by means of an adjustable diaphragm mounted in front of the photo-cell. The form of engagement between the leg 47 of member 29 and the cam 8 differs with the mounting of the lens. When the lens is both interchangeable and axially displaceable for focusing an axial slot is provided in the cylindrical part of cam 8 and the leg is resiliently engaged therein (Fig. 3b, not shown). When the lens is not interchangeable but is displaceable, leg 47 extends non-resiliently through aperture 42. When only the front cell of the lens is displaceable, the leg resiliently engages a notch in a flange attached to cam 8 (Fig. 1, not shown). Alternatively, the cam 8 or the cam 8 and sliding rod 6 can be mounted so as to be interchangeable with the lens mount knurled wheel 37 having toothed gear 38 meshing with toothed segment 39 on cam 8 may be provided and may be the sole means for turning ring 23. Alternatively, gear 38 may turn ring 23 directly. A range scale 48 is provided. The exposure meter pointer may move over an exposure value scale or such a scale may be provided on the lens mount. The pointers of the exposure meter may be visible in the camera view finder. Numbered index positions for filter factors may be provided adjacent mark 27 on ring 23 (Fig. 7, not shown) and a film type and speed indicator mounted on the camera casing (Fig. 6, not shown). Specification 839,332 is referred to.
Patent GB-302665-A (GB)
IPC: B07B13/00
Filed: 1928-12-19
Abstract: 302,665. Scherrer, J. W. Dec. 19, 1927, [Convention date]. Void [Published under Sect. 91 of the Acts]. Ratchet and like stepby-step conveyers. - Screens comprise parallel inclined bars b so as to convey the materials under the action of the reciprocating or compound movement of the screen. The bars are mounted in a trough a which collects the materials passing through the screen and has a discharge opening c for those passing over it.
Patent GB-374832-A (GB)
Title: Improvements in or relating to articulated vehicle seats
IPC: B60N2/30
Filed: 1930-12-12
Abstract: 374,832. Seats. MONRABA, H. M., 62, Paseo de San Juan, Barcelona, Spain. Dec. 12, 1930, No. 37553. Convention date, Dec. 12, 1929. Void [Published under Sect. 91 of the Acts]. [Class 52 (ii).] A vehicle seat is so constructed that it can be folded and slidably moved into a recess in the vehicle framework. Such a seat is shown in Figs. 1 and 3, comprising back and seat members mounted on links 2, the lower links being connected to a slidable frame 3 carrying runners 4 engaging guides 15. Tubular guides and runners may be provided. When grooves are formed in the vehicle floor for the passage of the frame 3, the latter may carry strips 10 to cover the grooves when the seat is folded into the recess.