baber/WOPTO huggingface dataset:
Patent GB-721343-A (GB)
Title: Process for producing butadiene-styrene copolymer latices of improved stability
IPC: C08F236/10
Filed: 1952-11-26
Abstract: Stable latices are produced by the emulsion copolymerization of butadiene-1,3 and styrene with a hydrolyzable emulsifier and a catalyst which on decomposition yields sulphuric acid, while adding continuously or at intervals an alkaline material such as sodium and/or potassium hydroxide so that the pH is maintained above the equivalence point of the emulsifier.  Specified emulsifiers are fatty acid soaps, rosin acid soaps and mixtures thereof and the catalyst may be sodium and/or potassium persulphate.  Dodecyl mercaptan may also be included.  The examples give the physical properties of the latices produced.
Patent GB-261915-A (GB)
Title: Improvements in thermionic valves
IPC: H01J21/02
Filed: 1925-11-27
Abstract: 261,915. General Electric Co., Ltd., and Smith, F. Nov. 27, 1925. Vacuum tubes. - In thermionic valves in which the cathode filament comprises two parallel straight portions 1, a spiral single-wire grid 10 and an anode 12 surrounding the filament are each indented longitudinally along the mid portions 17, 18 of their sides. The electrodes are all supported from a glass pinch, the anode being secured by wires 19 to supports 13 and the filament portions 1 being secured at the lower end by wires to a single support and lead and at the upper end by wires to springs 6 on a cross-piece 7 on a support 8. The filament portions may be in series instead of in parallel. Specifications 203,962, 239,736 and 240,944 are referred to.
Patent GB-1357212-A (GB)
Title: Benzothiophene derivatives and process for preparing the same
IPC: C07D333/56
Filed: 1971-06-25
Abstract: 1357212 Benzothiapine derivatives LABAZ 16 June 1972 [25 June 1971] 30032/71 Heading C2C Novel compounds of Formula I and the pharmaceutically acceptable acid addition salts thereof, for example the oxalate or hydrochloride, wherein R represents hydrogen or a branched or straight-chain alkyl group containing from 1 to 4 carbon atoms, R<SP>1</SP> represents hydrogen or methyl, X and X 1 , which are identical, each represent an atom of chlorine, bromine or iodine, Am represents a dimethylamino, diethylamino, di - n - propylamino, di - n - butylamino, pyrrolidino, piperidino or perhydroazepino group, and n is an integer in the range of from I to 5 inclusive are prepared by reaction of HAm with a compound of Formula IV or in the case where n is 1 or 2 by reaction of a compound II with (Z is halogen or tosyloxy). Intermediates of Formula IV above are prepared by reaction of with an intermediate of Formula II above obtained by the demethylation of the corresponding methyl ether starting material followed by halogenation. Pharmaceutical compositions in conventional forms for oral or rectal administration comprise an above novel compound and a carrier or diluent. The compositions are of use in the treatment of heart conditions.
Patent GB-1088558-A (GB)
Title: Novel film-forming solution
IPC: C03C17/34
Filed: 1964-10-08
Abstract: A film-forming solution comprises a metal acetylacetonate dissolved in a solvent mixture composed of (a) an alcohol containing 1 to 4 carbon atoms and (b) benzene, toluene, xylene or a mixture thereof. Preferably there is 5 to 75% of (a) and 95 to 25% of (b).  The metal may be cobalt, iron, chromium, copper, zirconium, vanadium or nickel, or the solution may contain acetylacetonates of more than one of these metals.  The solution is suitable for coating glass by the "iridizing" process.
Patent GB-708426-A (GB)
Title: Improvements in and relating to thrust bearings
Inventor: YOUNG JAMES BUCHAN
IPC: F16C17/06
Filed: 1950-12-08
Abstract: 708,426. Tilting pad bearings. ENGLISH ELECTRIC CO., Ltd. Nov. 30, 1951 [Dec. 8, 1950], No. 30095/50. Class 12(1) In a pivoted thrust pad bearing of the type wherein two rows of staggered equalizer pads 1, 3, 5 and 2, 4, 6 are interposed between the base of the bearing T and a rigid ring (not shown) supporting the assembly of pivoted thrust pads as a whole, each equalizer pad is hinged with clearance about a radial axis on a cage consisting of two concentric cylindrical rings V, W which are connected with one another by radial bridge pieces X, Y, the axes of the equalizer pads of the two rows being arranged at two different planes perpendicular to the axis of rotation of the thrust collar. The number of equalizer pads in each row is preferably equal to the number of pivoted thrust pads.
Patent GB-1014735-A (GB)
Title: Encapsulated pn junction semiconductor device
IPC: H01L23/24
Filed: 1962-10-19
Abstract: 1,014,735. Semi-conductor devices. TEXAS INSTRUMENTS Inc. Oct. 19, 1962 [Oct. 20, 1961], No. 30175/65. Divided out of 1,014,734. Heading H1K. An encapsulated PN junction semi-conductor device, such as described in Specification 1,014,734, comprises a substrate having a substantially flat surface and a semi-conductor wafer on the flat surface. The wafer has a plurality of PN junctions all of which are in the vicinity of one major wafer face and are spaced from the opposite major wafer face. An enclosure including the substrate surrounds the wafer and electrical connections exterior of the enclosure extend into the interior to connect ohmically to various semi-conductor zones of the wafer. The connections include a plurality of spaced coplanar flat conductors on the substantially flat surface and a respective plurality of spaced coplanar elongate flat conductors. The entire opposite major wafer face ohmically rests on one of the spaced coplanar flat conductors and wires ohmically connect between the semi-conductor zone of the one major wafer face and the other ones of the spaced coplanar flat conductors.
Patent GB-382432-A (GB)
Title: Improvements in and relating to the production of asphalt and tar emulsions
IPC: C08K5/521
Filed: 1931-11-02
Abstract: Asphalt and tar emulsions are prepared by the use as emulsifying or stabilizing agents of lecithin, particularly soya-bean lecithin, or other phosphatides or phosphatide-containing materials such as the bye-products obtained in the purification of lecithin for nutrient and like purposes. Any oil contained in the agents used may be saponified with ammonia, inorganic alkali, or an organic base.  Other emulsifying agents such as salts, fatty acids, or sulpho acids may be employed in addition.  Examples: (1) 100 kgs. of Mexican asphalt at 180 DEG  C. are poured with stirring into 100 kgs. of water, at 80-90 DEG  C., containing 4 kgs. of phosphatides; (2) 3 kgs. of soya-bean sludge are added to an emulsion prepared by stirring a molten mixture of 20 kgs. of asphalt and 30 kgs. of resin into 80 kgs. of boiling water; (3) 0,5-1 per cent of liquid ammonia, caustic soda, or triethanolamine may be added to the emulsions of (1) or (2), or to the phosphatides employed in making them; (4) 5 per cent of Turkey-red oil is added to the emulsions of (1) or (2); (5) an emulsifying and stabilizing agent employable in emulsifying asphalt comprises an aqueous solution containing 0,8 per cent of phosphatides and 0,4 per cent of caustic soda.
Patent GB-650869-A (GB)
Title: Improvements in or relating to rotatable cutting heads for machines for comminuting,mixing and stirring substances
IPC: A47J43/07
Filed: 1948-11-22
Abstract: 650,869. Cutting vegetables &c. OERTLI AKT.-GES., T. Nov. 22, 1948, No. 30293. Convention date, Jan. 15. [Class 5(i)] [Also in Group VI] A rotatable cutting head for a chopping, mincing, mixing &c. machine comprises a plurality of multibladed knives 1, 2, 3 removably mounted on a shaft 4, the cutting blades or wings 1a, 1b, 2a, 2b, 3a, 3b of said knives all being arranged in different inclined planes and the cutting edges thereof being concavely curved. The blades may be of the cross-section shown in Fig. 8, and the blades of adjacent knives are preferably angularly disposed at right angles.
Patent GB-249197-A (GB)
Title: Improvements in looms for weaving wide fabrics
IPC: D03D41/00
Filed: 1924-12-17
Abstract: 249,197. Hindle, J. H., and Hindle, T. Dec. 17, 1924. Beat-up motions; lays.-In looms particularly for weaving heavy wide fabrics the lay D, carried by one or more intermediate swords D<2> in combination with the ordinary end swords D<1>, is operated by one or more intermediate cranks on a crank-shaft mounted in intermediate cross frames A<1> to which are attached the front and back beams, so that the thrust in beating up is sustained by the back beam placing the intermediate frames in compression. The swords D<2> are shaped to clear the warps, are attached to the lay beam, and are loosely mounted on shafts E supported on pairs of bearing-brackets e bolted to transverse rails C. The crankshaft F having the ordinary end cranks F<1> is provided with one or more intermediate cranks F<2> corresponding to the swords D<2>. The shaft F is mounted in bearings f in end frames A and bearings f<2> in intermediate frames A<1>. The crankshaft is driven by an auxiliary driving-shaft G conveying power across the loom at two or more points by gears g to reduce torsional deflection in the crankshaft. The shaft G is mounted in pairs of bearings in the end and intermediate frames A, A<1>.
Patent GB-197617-A (GB)
Title: Improvements in or relating to hair-dressing appliances
IPC: A45D4/06
Filed: 1922-11-06
Abstract: 197,617. Dongers, A. H. Nov. 6, 1922. Hair - curling appliances.-A heater for use in "permanent" hair waving comprises a double - walled chamber into which a curled tress of hair is introduced and then closed by a lid 8. The space between the walls is filled with absorbent material such as silicon cotton 20 and asbestos string 21 which is saturated with a solu-. tion or lotion supplied for instance through the nozzle 23 and pipe 22. The vapour passes into the chamber through perforations 7 and escapes through the tube 17, the end of which is hookshaped to hold a piece of cotton - wool &c. for catching any liquid which may be ejected. The electric heater 24 is slipped over the end of the appliance and secured by a screw 25. The mouth of the chamber is notched, as is also the lid 8 at 5<a>, to receive the hair, and a sealing disc 9 of rubber &c. is placed between the chamber mouth and the lid. The lid has a finger-piece 15 and is drawn tightly into its closed position by toggle links 10, 12 pivoted to the lid and casing. The outer end of the chamber may be of larger size than the inner end. Specification 200,449 is referred to.
Patent GB-985608-A (GB)
Title: Compositions comprising thermosetting acrylic resins and alkyd resins
Inventor: TURNER ROBERT JOHN
IPC: C08L67/08
Filed: 1962-08-08
Abstract: A composition comprises a thermosetting acrylic resin and an alkyd resin that is modified by an aliphatic monocarboxylic acid in which the carboxylic acid group is directly attached to a tertiary or quaternary carbon atom. Thermosetting acrylic resin is defined as one that is converted into an infusible, insoluble product by reaction with an epoxy compound, peroxide, acid or anhydride, or an amine. The exemplified acrylic resin is a reaction product of a copolymer containing methylolacrylamide groups with a epoxy resin.  The preferred aliphatic carboxylic acid modifying agent contains at least 9 carbon atoms and is made by reacting olefins or paraffins with formic acid or with carbon monoxide and water.  The compositions may also contain a melamine formaldehyde resin.  The composition is preferably made by dissolving the constituents in a solvent, optionally with a pigment such as titanium dioxide, spraying or coating on to panels and, after drying, cross-linking by baking. Specifications 936,808, 942,465, 942,839, 946,432, 946,433, 954,086, 968,223, 969,939 and 982,116 are referred to.
Patent GB-1320785-A (GB)
Title: Process of making a plastics plate
IPC: B44C1/22
Filed: 1970-06-23
Abstract: 1320785 Etching PLASTRON Inc 23 June 1970 [1 July 1969] 30394/70 Heading B6J A thin film is coated with a light sensitive emulsion and photographically treated to produce thereon an image of indicia to be printed or displayed, the image-bearing film is bonded to a base-plate, and selected areas of the film, and of the underlying base-plate to required depths, are removed by etching to produce a printing or display plate, either the film or the base-plate or both being of plastics material. The film may contain magnetic or electrically conducting materials and may be of a different colour from the base-plate. (1) The base-plate and the film may be of polyvinyl chloride, polystyrene, cellulose acetate, cellulose acetate butyrate, ethyl chloride or an acrylic resin, etched with methyl ethyl ketone or ethyl acetate. (2) The base-plate may be as in (1) above, or of copper, zinc or magnesium, etched with ferric chloride, and the film of polyvinyl alcohol, etched with water. (3) The base-plate and the film may be of a photopolymerizable material, etched with sodium hydroxide. (4) The base-plate may be of polyvinyl alcohol or as in (1) above, and the film of zinc, copper or magnesium. The film may be positive imagebearing, the non-image areas being removed by the etching to leave the image areas of the baseplate, film and emulsion superposed. In another form, the film is negative image-bearing, the light-unaffected areas of the film are washed away and actinic light is applied where the emulsion is not present, i.e. in the image areas after development, to the polymerized underlying areas of the base-plate, the hardened areas of the emulsion are removed with isopropyl alcohol, and the unpolymerized areas of the film and base-plate are etched.
Patent GB-286359-A (GB)
Title: The manufacture of new indigoid dyestuffs
IPC: C09B7/00
Filed: 1926-12-01
Abstract: 286,359. Carpmael, W., (1. G. Farbenindustrie Akt.-Ges.). Dec. 1, 1926, Samples furnished. Indigoid dyes are produced by condensing 8- halogen-1 :2-naphthisatins, which may contain further substituents such as chlorine, bromine, or the nitro group, or alpha-derivatives thereof, with the usual indigoid dye components such as oxythionaphthene, oxindole, indoxyl, acenaphthenone, alpha-anthrol, alpha-oxyanthranol, alpha-naphthol, or carbazole. The products, which may be further halogenated, dye from the vat in blue-grey, violet, olive, &c. shades. According to examples, dyestuffs are prepared from the following components :-(1) 8-chlor-1 : 2-naphthisatin chloride (made by treating the 8-chlor-1 : 2-naphthisatin of Specification 286,358 with phosphorus pentachloride) and 4-methyl-6-chlor-3-oxythionaphthene ; (2) 5 : 8-dichlor-1 : 2-naphthisatin (Specification 286,358) and 2 1-naphthoxythiophene ; (3) 8-chlor-4-brom-1 : 2-naphthisatin chloride (made by treating the 8-chlor-4-brom-1 : 2-naphthisatin of Specification 286,358 with phosphorus pentachloride) and N-acetylindoxyl ; the product may be improved by halogenation. Specifications 8530/08 and 8531/08 also are referred to.
Patent GB-732334-A (GB)
Title: Improvements in or relating to centrifugal fan wheel
IPC: F04D29/28
Filed: 1953-11-04
Abstract: 732,334. Centrifugal fans. DOYLE VACUUM CLEANER CO. Nov. 4, 1953 [Nov. 7, 1952], No. 30466/53. Class 110 (1). A centrifugal fan impeller comprises blades 5 of involute form secured between two axially spaced discs 1, 2, the centre of the generating circle for each involute blade being offset from the centre of the impeller so that the inlet area of the passage between adjacent blades is greater than the outlet area. The generating circle has a diameter about one-sixth that of the impeller and is offset from the centre of the impeller by a distance less than the diameter of the generating circle and preferably substantially equal to the radius of the latter. An inlet opening 4 is provided in the disc 2. The blades 5, which are of sheet metal, are secured to the discs 1, 2 by lugs 17. The impeller may be used in a vacuum cleaner.
Patent GB-955008-A (GB)
Title: Improvements in preparation of alkali and alkaline earth metal borohydrides
Inventor: KOLLONITSCH JANOS
IPC: C01B6/00
Filed: 1961-08-24
Abstract: An alkali or alkaline earth metal borohydride is prepared by reacting the aluminium hydride of the selected metal with a boric acid or metaboric acid ester of an alcohol ROH in an inert liquid medium containing sufficient of an ether solvent to dissolve the metal aluminium hydride.  R is alkyl, cycloalkyl, alkylene or halogen-substituted alkyl and a number of borates and metaborates are specified. Ethers may be diethyl ether, tetrahydrofuran, dibutyl ether or the dimethyl or diethyl ether of the diethylene glycols and they may be mixed with hydrocarbon solvents, e.g. benzene, hexane or cyclohexane.  The reaction is effected at ambient temperature under an atmosphere of N2 with stirring and without cooling. Several methods of recovery of the borohydrides or etherates thereof are described.  The method is exemplified in the preparation of LiBH4, NaBH4 and Ca(BH4)2.
Patent GB-1340216-A (GB)
Title: Time coincidence circuit
IPC: H03K5/26
Filed: 1971-06-30
Abstract: 1340216 Time coincidence circuits; pulse generators INTERNATIONAL BUSINESS MACHINES CORP 30 June 1971 [5 Aug 1970] 30611/71 Headings H3A and H3T A time coincidence circuit for two signals A, B includes a circuit 10 comprising an arrangement 40 (see Fig. 3) for generating a voltage spike signal in response to a first electrical signal A, a threshold detecting arrangement 20 to which the spike signal in combination with the signal B (same as J2) is applied to produce one of two voltage levels depending on the relative phase lead or lag and a variable delay 14 (Fig. 1) in the path of one of the signals which is controlled by the output of threshold arrangement 20. In the spike generator 40, a tunnel diode TD5 is set in a state of low conduction by biasing network R 15 , R 11  and fired by an input signal J1 derived from A into a high level of conduction, the pulse output formed being reflected by delay lines D1, D2 to form spikes at D, E. The arrangement B1, B2, C1 and R12 acts as a reset circuit for TD5. The spike formed at E is applied along with a bias supplied by R20, R21 to a threshold detector formed by a tunnel diode TD2 maintaining it in a low level of conduction. When a further signal J2 is applied in phase coincidence or phase lead with the spike signal, TD2 is fired into a high conduction level. The spike signal at D is applied to one end of a tunnel diode TD4 in a latching circuit 60, whose other end receives the output of diode TD2. The tunnel diode TD4 is fired only when the output of diode TD2 is low and the output of the latching circuit 60 is high or low depending on the phase relationship of signals J1, J2 and is applied to an integrator 70 followed by a differential amplifier 80 to which is also applied a reference voltage equal to the average output of integrator 70 so that the output of amplifier 80 varies about 0 volts. Any variation in the time relationship between signals J1, J2 and hence A, B is compensated by adjustment of the variable delay 14 which may be a threshold device such as a step recovery diode (see Fig. 8) providing an output at different times depending on the threshold level set by output of amplifier 80. The tunnel diode TD2 is reset to its low state after a time period dependent on the energy stored in aninductor L1 connected to a back diode BD1 supplied with a voltage V less than that corresponding to the lowermost point of the current voltage characteristics of the tunnel diode TD2.
Patent GB-304865-A (GB)
Title: Improvements in pulverising machinery
IPC: B02C13/13
Filed: 1927-11-15
Abstract: 304,865. General Electric Co., Ltd., and Pochabradsky, B. Nov. 15, 1927. Impact pulverizers.-Pulverizing apparatus comprises an impact pulverizer 10 adapted to receive material at 6 and discharge at 23 and means for supplying air or gas at 19 which passes through the pulverizer and removes the pulverized particles, additional air or gas being supplied to the latter mixture through a conduit 24 so that it mixes with the pulverized particles and air after leaving the pulverizer. The pulverizer comprises rings 11 shrunk on a shaft 5 and discs 12 riveted to the rings and spaced toward their circumferences by distance pieces 16, the beaters 13 being mounted on pins 14 situated near the periphery of the discs. The pulverizing chamber 7 is provided with a renewable liner 8 retained by rings 9 and the end cover 18 is provided with the air inlet 19 controlled by valve 22, a screen 21 being provided in the inlet. The material is fed to the hopper 1 from which it drops on to a rotating tray 2 driven by reduction gearing 3 and worm and wormwheel 4, and thence down the conduit 6 into the pulverizer. The air from the conduit 19 carries the pulverized material into the passage 23 which acts as a separator, the coarse material falling back into the pulverizer. After passing through the separator the pulverized pa.rticles encounter a secondary air or gas current, which enters by the branch 24 controlled, by a valve 25, and passes through a duct connected with the inlet 26. The mixture is then drawn by a fan 28 into a spiral volute 29 formed in the fan casing 30, whence it passes to an outlet (not shown). Labyrinth packings 31 prevent gas leakage along the shaft 5. Mechanical separation may be incorporated in the pulverizer and comprises louvre plates 37. Fig. 2, so inclined that the mixture passing through it has a direction of whirl opposite to that which it had on leaving the pulverizing chamber so that heavy particles striking the louvres are deflected back into the pulverizer. The mixture then flows upwardly through the passage 38 and meets baffles 41 and a curved portion 40 of the wall where further separation of the coarse particles occurs. After passing through the baffles 41, secondary air from the inlet 24 is added, as in Fig. 1, and the mixture passes through the passage 27 and! fan 28 to the spiral volute 29, whence it is discharged. In a further modification two pulverizers, each similar to that shown in Fig. 1, may be mounted on a common shaft, the auxiliary air inlet being common to both machines and, preferably, an independent external fan is provided.
Patent GB-689413-A (GB)
Title: Improvements in friction hinges
Inventor: EDWARDS JACK WILLIAM
IPC: E05D11/08
Filed: 1950-12-15
Abstract: 689,413. Hinges. CRITTALL MANUFACTURING CO., Ltd. Jan. 9, 1952 [Dec. 15, 1950], No. 30686/50. Class 65 (ii) Pivoting adjustment. A friction hinge comprises a fixed leaf 1, an. adjustable band 8, the jaws of which are adapted to engage a member 5 on the fixed leaf, a swinging leaf 2, a hinge bush 9 which is interlocked with the swinging leaf to prevent rotation therebetween and which acts as a spacer between the leaves, and a hinge pin 15 locked to the fixed leaf. As shown, the member 5 is a tongue pressed out of its leaf, and adjustment of the friction band is effected by means of a screw 10. The leaves may be riveted or welded to frame and casement members, they may be long or short, and may be of angular or flat construction.
Patent GB-337560-A (GB)
Title: Improvements in or relating to pit tubs and the like
IPC: B61D11/02
Filed: 1929-10-10
Abstract: 337,560. Naylor, A. Oct. 10, 1929. Buffers.-In a pit tub or like wagon of the kind in which the bottom, sides, and end walls are formed of separate metal sheets detachably bolted together to facilitate repairs, the end walls 6 consist of unflanged sheets bolted at their vertical edges to the inturned end flanges of the sides 5, while the bottom 1 preferably has upturned flanges secured by bolts 12 both to the sides and to the end walls. The construction shown in Figs. 1 and 3 is that of flat-bottomed tub, the bottom 1 being supported on two longitudinal beams 2 and three transverse cross-bars 3, while in a modification a well-bottomed tub is described, the well portion of which is corrugated for adding strength thereto.