baber/WOPTO huggingface dataset:
Patent GB-1253611-A (GB)
Title: Phosphorus-containing reagents for aldehyde synthesis
IPC: C07F9/40
Filed: 1969-03-07
Abstract: 1,253,611. Nitrogen containing unsaturated phosphinates; steroids; aldehydes. SHIONOGI & CO., Ltd. 7 March, 1969 [7 March, 1968; 19 March, 1968 (2); 30 March, 1968], No. 12310/69. Headings C2C, C2P and C2U. Novel compounds of the formula in which R<SP>1</SP> is a lower alkyl group, R<SP>2</SP> is a lower alkyl group, an aralkyl group of 7-8 carbon atoms, an aryl group of 6-7 carbon atoms or R<SP>11</SP>O where R<SP>11</SP> is a lower alkyl group, R<SP>3</SP> is an acyclic or cyclic alkyl group of 1-6 carbon atoms or an aryl group of 6-7 carbon atoms, R<SP>4</SP> is a hydrogen atom, a lower alkyl group, an aralkyl group of 7-8 carbon atoms, a lower alkoxy carbonyl group or a halogen atom may be obtained by reacting a compound of the formula with R<SP>3</SP>-NH 2  in an organic solvent at 0- 120 C. Typical compounds produced are diethylphosphonoacetaldehyde cyclohexylaminoenamine and 2-diethylphosphono-3-(N-cyclohexyl)aminoacrylic acid ethyl ester. The compounds may be reacted with a carbonyl compound in an aprotic solvent in the presence of a basic catalyst at a temperature of - 20 C. to 100 C. to yield and then hydrolysed in acid medium to yield Specified aldehydes are derived from cinnamic and substituted cinnamic acid, based on cyclohexylidene, and derived from steroids and steroidal compounds as set out in Examples 8, 9, 10, 11, 12, 14, 18, 25, 26, 27 and 28.
Patent GB-514064-A (GB)
Title: Improvements in or relating to electrical wave filters
IPC: H03F1/50
Filed: 1938-04-25
Abstract: 514,064. Impedance networks. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. April 25, 1938, No. 12341. Convention date, April 24, 1937. [Class 40 (iii)] An intermediate-frequency filter for admitting a wide television band while excluding an adjacent sound-frequency band comprises two coupled circuits I, II, tuned to the mid-band television frequency and a rejector network III for excluding the sound frequencies, means such as the resistance 26 being provided for balancing out the effects of the resistance inherent in the coil 22 or its analogue. In the arrangement shown in Fig. 1, the rejector circuit III is tuned to reject the sound carrier and behaves as a capacitance at the television frequencies in the primary circuit 14, 13, 18, in which the capacity 14 is or includes the anode capacity of the valve 1, the inductance 13 may be shunted by a resistance 15 to broaden the tuning, and the inductance 18 serves to couple the circuits I, II, the condenser 19 is a by-pass condenser for the anode battery B. In the secondary circuit 18, 20, 16, 17, the capacity 20 is a blocking condenser and the capacity 17 is or includes the grid capacity of the valve 7, a grid leak being shown at 25. In a modification, Fig. 2 (not shown), the resistance 26 is tapped off the inductance instead of the capacitance in the rejector circuit III. In a further modification, Figs. 3, 4 (not shown) the bridged tee network III is replaced by a network which has a negative mutual-inductance coupling with the inductance 13. The network III may be variously located in relation to the circuits I, II. The inductance coils 13, 16, 18, 41, 42 are arranged as shown in Fig. 5 on two supporting tubes 50, 51, and surrounded by a screen 52.
Patent GB-1178376-A (GB)
Title: Improvements in or relating to Polymerization
IPC: C08F210/00
Filed: 1968-03-14
Abstract: 1,178,376. Ziegler copolymerization using suppressor-promoter mixture. COPOLYMER RUBBER & CHEMICAL CORP. 14 March, 1968 [14 March, 1967; 31 Jan., 1968], No. 12345/68. Heading C3P. Sulphur vulcanizable elastomers are prepared by copolymerizing ethylene, a C 3-16  alphamonoolefin, and a monomer, preferably non-conjugated, containing a plurality of carbon-carbon double bonds in solution in an organic solvent in the presence of a Ziegler catalyst and a base (as a suppressor) and a compound containing the group where R is a completely halogenated alkyl or alkenyl group having 1 to 20 carbon atoms. Ammonia, pyridine, hydrazine and a wide variety of amines, including substituted amines, polyamines and heterocyclic and homocyclic amines, are specified as suitable bases. Suitable per-halo compounds are hexachloroacetone, perchlorocrotonylchloride, butyl, propyl and ethyl perchlorocrotonates, trichloroacetanilide and trichloroacetophenone. The catalyst is suitably a mixture of an organometallic compound of aluminium and a vanadium compound. The polyunsaturated monomer may be straight-chain, eg hexadiene-1,4, but is preferably a bridged-ring hydrocarbon suitably a derivative of bicyclo (2,2,1) heptane and higher analogues thereof. In the examples, ethylene/ propylene / 5 - ethylidene - 2 - norbornene are terpolymerized in the presence of and promoter/suppressor systems comprising hexachloracetone, perchlorocrotonyl chloride, trichloroacetanilide and ethyl or butyl perchlorocrotonate, including mixtures thereof, and aniline, pyridine, or ammonia.
Patent GB-702248-A (GB)
Title: Process for the production of spinning solutions from polymers or co-polymers of acrylonitrile
IPC: C08J3/09
Filed: 1952-05-15
Abstract: Polymers or copolymers of acrylonitrile are dried to reduce their water content to not more than 1.0 per cent., preferably 0.2 per cent., before being dissolved in dry solvents, as described in the parent Specification.  Drying may be accomplished by heating in vacuo at 80 to 100 DEG  C. or by washing with a dry solvent which is miscible with water, e.g., dry acetone, any residual solvent being removed by evaporation.  The dried polymers may be dissolved in dry dimethyl formamide to yield solutions suitable for spinning.
Patent GB-878441-A (GB)
Title: Method of treating the surface of semi-conductor elements
IPC: C25D11/32
Filed: 1960-04-07
Abstract: 878,441. Etching semi-conductors electrolytically. BROWN, BOVERI & CO. Ltd. April 7, 1960 [April 8, 1959], No. 12380/60. Class 41. The surface of a semiconductor e.g. of silicon, is cleaned by electrolytic pickling and is subsequently oxidized using as electrolyte a solution of a substance releasing oxygen by electrolysis, and after pickling the current density is raised to form the oxide coating. By this means pockets of electrolyte under the oxide coating are avoided. A suitable electrolyte contains ammonium peroxide disulphate, boron oxide and sulphuric acid, used first at a current density of 0.5 A.S. cm. and then raised to 1 A.S. cm. A suitable apparatus consists of a vessel G containing electrolyte E, and having an opening at its base against which a wafer of silicon H is pressed by an electrode K2. A plunger of insulating material S is provided with a gold electrode K1 which covers the central area of the wafer, leaving an annular area Z to be treated. A gold annular electrode R acts as cathode.
Patent GB-1389165-A (GB)
Title: Jewelry
IPC: A44C15/00
Filed: 1973-03-14
Abstract: 1389165 Jewellery D B L BRICKWOOD and I M KNIGHT 14 March 1973 12381/73 Heading A3H [Also in Division F4] An article of jewellery comprises a container 12 housing an electrical light signalling device 11, an electrical power supply 14 and an electrical oscillator circuit connected between the power supply and the device, the container having means for connecting it to the body or the clothing of the wearer. The signalling device 11 may comprise light emitting diodes, electric lamps or liquid crystal arrangements. The power supply preferably comprises a pair of batteries 14 and the signalling devices 11 may be divided into sets which are energised alternately by the oscillator circuit. The components within the container may be permanently fixed therein by a transparent thermosetting material.
Patent GB-459128-A (GB)
Title: Improvements in or relating to sharpening devices for the rotating knives of cigarette making machines
IPC: B24B3/44
Filed: 1935-04-24
Abstract: 459,128. Sharpening knives. QUESTER, C., and QUESTER, K., (trading as KOLNER WERKZEUGMASCHINENFABRIK VON W. QUESTER), 282, Berrenratherstrasse, S³lz, Cologne, Germany. April 24, 1935, No. 12398. Convention date, April 25, 1934. [Class 60] The knife of a cigarette rod or like machine is ground and set respectively by tools which rotate in timed relation with the rotation of the knife and have operative surfaces shaped to contact with the knife edge evenly over the full operative length thereof. As applied to the sharpening of a sickle knife 17<1> rotating in the direction of the arrow 18<1> and moving axially also in the direction of the arrow 251, the grinding-tool comprises a disc 20<1> driven by spur gear 24<1> in timed relation with the rotation of the knife, the grinding-surface 22<1> being bevelled to suit the bevel of the knife, rising radially to conform with the shape of the sickle-shaped edge of the knife and rising axially to conform with the axial movement; if the knife is sharpened when it has no axial movement, the lastmentioned rise of the surface 22<1> is omitted. Figs. 9 and 10 show the application to a circular knife 32<1> carried by a rotating arm 28<1> and driven by a planetary gear 31<1> meshing with a stationary gear 33<1>, the grinding-disc 36<1> being driven in timed relation with the rotation of the knife, and the grinding-surface 35<1> being bevelled to suit the bevel of the knife and rising radially and axially to conform with the movements of the knife edge ; if the knife is sharpened when it has no axial movement, the axial rise of the surface 35<1> is omitted. The setting-tool, which operates on the knife after grinding is similarly driven and shaped. Specification 294,905, [Class 60], is referred to.
Patent GB-1169841-A (GB)
Title: New Disazo Pigments and processes for their manufacture and use
IPC: C09B35/02
Filed: 1968-03-14
Abstract: 1,169,841. Disazopigments. CIBA Ltd. 14 March, 1968 [16 March, 1967; 3 Jan., 1968], No. 12426/68. Heading C4P. [Also in Division C3] The invention comprises disazopigments of the general formula wherein A 1 , A 2  and R 2  are arylene radicals, R 1  is a naphthalene radical, the azo, hydroxy and carboxylic acid amide groups being in the 1,2,3- positions respectively; X is a direct bond or a bridging group, Y is NHCOR 3  or CONHR 4 , wherein R 3  is H, alkyl, aryl, alkoxy, amino, alkylarnino or arylamino and R 4  is H or aryl. Preferred values of X are a single bond, HNOCC 6 H 4 CONH-, -HNO 2 SC 6 H 4 SO 2 NH-, -HNCONH-, and an oxadiazole heterocycle, others are mentioned. Preferred naphthols have the formulµ wherein X 3  is H, halogen, alkoxy, R 3  is as above and Y 1  and Y 2  are H, halogen, alkyl or alkoxy, or wherein X 3  is as above, V is H, halogen or alkyl, R 7  is H or optionally substituted phenyl, and n is 1 or 2. The pigments are prepared by coupling a tetrazoamino compound of an appropriate diamine with the naphthol in a purely organic medium, e.g. nitrobenzene and 100% acetic acid. The pigments colour polymers, e.g. P.V.C. in orange, red, blue, violet, scarlet and blue-black shades.
Patent GB-1500862-A (GB)
Title: Air-purification in packaging machines
IPC: B65B9/20
Filed: 1976-03-29
Abstract: 1500862 Sterilizing packaging material ZIRISTOR AB 29 March 1976 [7 April 1975] 12475/76 Heading A5G [Also in Division B8] The inner surface of a tube of packaging material is sterilized by a sterilizing agent which is applied to the surface and subsequently entrained as a vapour and removed from the tube by a stream of sterile gas introduced into the tube, the gas-vapour mixture from the tube is conducted to separating means whereby vapour is separated from the gas and the separated gas is then re-sterilized and returned to the stream being introduced into the tube for removal of further sterilizing agent. The gas stream for removing the sterilizing agent from the tube may be sterilized by heating and may be sterile air. The sterilizing agent in the tube may be vapourized by heating. The tube may be formed from a web by folding together and bonding together opposite longitudinal edges, and the sterilizing agent is applied to the web surface before the web is thus formed into a tube. Sterilization of the web surface is preferably effected by a sterilizing agent from a reservoir applied to the web by roller means. Material being packaged in the tube may be supplied to the sealed lower end of the tube by a supply pipe projecting into the tube, and means for vapourizing the sterilizing agent in the tube and means for introducing an upward-flowing stream of sterile gas into the tube are located above the outlet end of the supply pipe. Apparatus for use in sterilizing the inner surface of a tube 3 of packaging material 1 by applying a sterilizing agent to the surface and subsequently removing the gent, as a vapour, from the tube by a stream of sterile gas 9 introduced into the tube, the apparatus comprising means for receiving the gas-vapour mixture from the tube. means 21 adapted to separate the vapour from the gas in the mixture, means for re-sterilizing the separated gas, and returning it to the stream which is introduced into the tube.
Patent GB-981243-A (GB)
Title: Recovery of cryolite
IPC: C01F7/08
Filed: 1962-04-02
Abstract: Cryolite is recovered from the carbon cell linings of an electrolytic cell used for the production of aluminium, by mixing the cell linings with a carbonate, e.g. sodium carbonate or bicarbonate or mixtures thereof, and heating this mix to form sodium fluoride, sodium aluminate and carbon dioxide.  These soluble salts are then leached out with water or dilute alkali and cryolite is obtained from this solution by precipitation with carbon dioxide which may be the carbon dioxide produced as above. Preferably the carbonaceous cell linings are ground up in the presence of aqueous sodium carbonate before roasting at 500-900 DEG  C.  The final precipitation process yields a sodium carbonate solution which may be used in the grinding process. Equations are:- <FORM:0981243/C1/1> <FORM:0981243/C1/2>
Patent GB-837730-A (GB)
Title: Process for the production of water enriched in deuterium oxide
IPC: C01B5/02
Filed: 1946-04-25
Abstract: In a process where water is enriched with deuterium by countercurrent contact of water and a mercaptan or hydrogen sulphide in two stages maintained at different temperatures, 0.01-0.5 mols/litre of an alkali or alkaline earth metal hydroxide are added to the water to catalyse the D exchange.  The mercaptan may <PICT:0837730/III/1> be methyl or ethyl mercaptan, but is preferably liquid, e.g. isopropyl, n-propyl, butyl, or benzyl mercaptans, or thiophenol. The alkali may be caustic soda or calcium hydroxide.  Water as a dilute aqueous solution of NaOH enters lower temperature, e.g. 25 DEG  C., tower 10 at 22 and flows down through a series of perforated plates.  The water, enriched in deuterium, passes from tower 10, through heat exchanger 30, to higher temperature, e.g. 50 DEG  C., tower 16.  The water poor in dueterium flows from tower 16 through heat exchanger 30 and out through pipe 34.  Isopropyl mercaptan flows in a closed circuit from pipe 24, up through tower 16, where it is enriched with deuterium transferred from the water, through heat exchanger 38, and up through tower 10, where D is transferred to the water, before returning through heat exchanger 38 to pipe 24.  Water enriched with D is withdrawn between the towers, through pipe 44 and passed through a pair of towers 12, 18 which are the same as towers 10, 16.  A closed circuit of isopropyl mercaptan through the pair of towers is also provided.  The D poor water is returned from the tower 18 to the top of tower 16 through pipe 50, and the water heat exchanger 46 is steam heated. Further pairs of towers may be used as required.
Patent GB-448007-A (GB)
Title: Improvements in or relating to thermal insulation and process of making the same
IPC: H01B13/18
Filed: 1935-04-26
Abstract: 448,007. Nonconducting coverings for heat. STEVENS, A. H., 5, Quality Court, Chancery Lane, London.-(International Paper Co. ; 220, East 42nd Street, New York, U.S.A.) April 26, 1935, No. 12592. [Class 64 (ii)] [See also Group VIII] Heat insulation comprises twc sheets of insulating-material 10, 12 such as paper, with an intermediate sheet of metal foil 11, e.g. aluminium, the sheets being spaced by rows of hollow tubes 13, which may be of paper spirally wound. To produce the material, sheets of paper are fed from rolls 14, 16, the former passing over a roller 20 where it receives a paper tube 13 from a feeder wheel 19. Adhesive is applied to the upper and lower sides of the tubes 13 by rollers 23, 22. A sheet 11 of aluminium foil receives paper tubes in a similar manner, and the sheets are brought together between rollers 17, 17, 18, 18, and received by a reel 28<1>. The paper tubes in the two air spaces are arranged in staggered relation. The tubes may be 0À25-0À33 inches in diameter and 6 inches apart.
Patent GB-441913-A (GB)
Title: Improvements relating to automatic arc lamp mechanism
IPC: H05B31/00
Filed: 1934-06-26
Abstract: 441,913. Arc lamps. SPERRY GYROSCOPE CO., Inc., Manhattan Bridge Plaza, Brooklyn, New York, U.S.A.-(Assignees of House, F. R. ; 4, Hayes Street, Baldwin Harbor, New York, U.S.A.) June 26, 1934, No. 12686 /35. Convention date, June 26, 1933. Divided out of 441,848. [Class 39 (i)] The positive carbon of an arc lamp is fed by rollers and current is supplied through it and the rollers to the controlling-magnet of a device for driving the negative carbon similar to that described in Specification 441,848 so that if the carbon burns so short as to be out of contact with the rollers the negative electrode is rapidly retracted. The Figure shows the electrode-holder and means for rotating and feeding the electrode. The electrode passes through a hollow nose piece 7 through which flows cooling-fluid and is held by rollers mounted on levers 23, 24 and connected by gear wheels 26, 31. The wheel 31 is connected through a worm 36 to a gear 37 meshing with a gear 38 pinned to a disc 39 mounted loosely on a sleeve 18 which carries the levers 23, 24 and the roller. The sleeve 18 is rotated by bevel gear 19, 45 and as long as the disc 39 is free the rollers and carbon rotate as a single whole. To feed the carbon forward the disc 39 is stopped by a rod 40 engaging with notches in its rim. The rod 40 may be moved to engage the disc by an electromagnet controlled by a thermostat on which the rays of the arc are focused by a lens or may be operated by a hand-actuated cam. The gear 45 is driven from electric motor, or, if the motor fails, by hand through a spindle 51 and bevel gear. To change the carbon the levers 23, 24 are separated by a hand-operated cam. The holding and feeding arrangements for the negative carbon are thus described in Specification 441,914.
Patent GB-1193417-A (GB)
Title: Improvements in triglycidyl isocyanurate adhesive
IPC: C08G59/42
Filed: 1969-03-11
Abstract: 1,193,417. Epoxy resin adhesive. HENKEL & CIE, G.m.b.H. 11 March, 1969 [12 March 1968], No. 12810/69. Heading C3B. An epoxy resin adhesive composition comprises triglycidyl isocyanurate (T.G.I.), a carboxylic acid anhydride having a m.p. <40‹ C. (I), a polycarboxylic acid polyanhydride (II), and a thixotropy producing means (III). Examples of I are hexahydrophthalic anhydride and methylhexahydrophthalic anhydride. II may be adipic polyanhydride. I and II may be present so as to provide 0À6 to 1À2 carboxylic acid anhydride groups per epoxy group in the T.G.I. III which may comprise 5 to 40% by wt. of the resin and hardeners may be asbestos fibres, finely divided silicic acid, zirconium silicate, bentonite or aluminium hydroxide. The composition may be prepared by heating the ingredients to 50-80‹ C. and homogenizing. The adhesives may be cured by heating, e.g. at 160-180‹ C. for 5 to 60 minutes.
Patent GB-1430797-A (GB)
Title: Horizontal deflection circuit for television receivers
IPC: H04N3/16
Filed: 1973-03-16
Abstract: 1430797 Sawtooth deflection currentgenerators INTERNATIONAL STANDARD ELECTRIC CORP 16 March 1973 [21 March 1972] 12912/73 Heading H3T [Also in Division H2] In a television horizontal deflector current generator of the type comprising a driver portion including a commutatable switch and having a switch 5 for effecting commutation, the power is supplied via a storage inductor 2 and control of the power, e.g. to stabilize the deflection with changes with supply voltage or with the drain from an associated E.H.T. supply, is effected by a controllable inductor 3 connected in parallel with a rectifier. In operation the storage inductor and a commutating capacitor 6 oscillate and during one part of the cycle energy is returned to the supply. The controllable inductor is effective during this latter part. A capacitor 8 sets the D.C. level of operation of the diode.
Patent GB-1018913-A (GB)
Title: Treatment of paper with latex composition
IPC: C08G18/69
Filed: 1964-03-26
Abstract: A composition comprises a rubber latex and a water-stable adduct of an organic isocyanate in which the isocyanate group or groups are masked but which can be thermally decomposed to regenerate the isocyanate.  The rubbers exemplified are natural rubber, butyl rubber, carboxylic modified styrene (butadiene rubber, nitrile rubber, chloroprene copolymer and SBR. The masking agent for the isocyanate may be phenol, bisphenol or trimethylol propane. Other ingredients are zinc oxide, the sodium salt of ethylene diamine tetraacetic acid and a phenolic antioxident.ALSO:Cellulosic paper is given improved physical properties by impregnating the paper with a composition comprising a rubber latex and a water-stable adduct of an isocyanate in which the isocyanate group or groups are masked but can be thermally decomposed to regenerate the isocyanate, substantially drying the paper at a temperature below the decomposition temperature of the adduct, and heating the paper to at least the said decomposition temperature.  The rubbers exemplified are natural rubber, butyl rubber, carboxylic-modified styrene/butadiene rubber, nitrile rubber, chloroprene copolymer and SBR.  The masking agent for the isocyanate may be phenol, Bisphenol or trimethylol-propane. Other ingredients are zinc oxide, the sodium salt of ethylene-diamine-tetra-acetic acid and a phenolic antioxidant.
Patent GB-292323-A (GB)
Title: Improvements relating to silencers for internal combustion engines
IPC: F01N1/06
Filed: 1927-05-14
Abstract: 292,323. Electro-Mechanical Brake Co., Ltd., and Smith, S. May 14, 1927. Exhaust-silencers.-A casing a, tapered at its ends and connected to the engine exhaust pipe at b, encloses a number of coaxial tubes d, e, f The tubes are of different lengths, the central tube being the shortest, and the annular spaces be tween the tubes as well as the space between the outer tube and the casing are occupied by helical metal strips g forming helical passages of different lengths. The helical strips may be of different pitch in the different spaces. Specification 208,270 is referred to.
Patent GB-331960-A (GB)
Title: Improvements in or relating to tool holders
IPC: B23B31/08
Filed: 1929-04-26
Abstract: 331,960. White, A. E., (American Sterilizer Co.). April 26, 1929. Chucks.-A self aligning device for holding a reamer D or other tool comprises a shank A and socket C and an intermediate member B which is slidable in transversely disposed slots at the ends of the shank and socket to constitute a driving connection between these parts. The member B makes rolling contact with the shank and socket. A sleeve E with inturned flanges e is retained by split rings F, F' seating in grooves a, c and serves to limit the relative movement of the parts A and C.