baber/WOPTO huggingface dataset:
Patent GB-1355881-A (GB)
Title: Superconductors
IPC: H01L39/24
Filed: 1972-01-13
Abstract: 1355881 Super-conductors SIEMENS AG 13 Jan 1972 [29 Jan 1971] 17245/72 Addition to 1245339 Headings H1A A5 and A4D A super-conductor comprising a support having a surface layer of Nb 3 Sn containing C according to the main patent No 1245339 is annealed for 0À3 to 1 min. at 750 to 850C in an inert gas or in vacuo. The annealing step increases the critical current density of the super-conductor and has the surprising effect that in a flat strip structure the value of the critical current density is greater for transverse magnetic fields parallel to the larger surface than for fields perpendicular to this surface. In a specific embodiment a support strip of Ni- Mo alloy is coated with Nb 3 Sn containing 0À63 wt. per cent C by decomposition of NbCl 4 , SnCl 2 , and CO as in the main patent. The strip is then passed through an annealing oven heated to 800C and containing Ar, and then allowed to cool rapidly. The strip is said to be especially suitable for winding into coils.
Patent GB-409093-A (GB)
Title: Improvements relating to domestic wash boilers
IPC: D06F1/00
Filed: 1933-01-19
Abstract: 409,093. Electric fires; washing- boilers. BURNLEY COMPONENTS, Ltd., and WARD, D. K., Accrington Road, Rose Grove, Burnley. Jan. 19, 1933, No. 1738. [Class 39 (iii).] A wash boiler D and electric fire B are constructed as a single unit, the fire being built on to the outer casing of the boiler and having a cover H which slides in flanges G on the casing D and has a projection on its inner side switching on the fire when the cover is lowered and switching it off when raised. A boiler heating element may be arranged so that it and the fire cannot be switched on simultaneously. The fire may comprise a wire coil B mounted in a frame curved to the contour of the boiler, a top flange overlapping the top of the cover H when raised.
Patent GB-1185601-A (GB)
Title: Improvements in and relating to Air Filters
Inventor: WRIGHT MALCOLM HENRY
IPC: B03C3/09
Filed: 1968-01-12
Abstract: 1,185,601. Electrostatically-driven air filtering. ORBITRON ELECTRONIC PRODUCTS Ltd. 23 Sept., 1968 [12 Jan., 1968], No. 1804/68. Heading B1T. [Also in Division H1] Air is driven through a filter element 7 (not detailed) by a cathode 2a and a downstream pervious anode la charged by a H.T. D.C.- voltage source to generate a static discharge. As described, filter element 7 may itself be charged, the better to trap dust particles. Anodes la are of aluminium mesh and cathode wires 2a of tungsten.
Patent GB-304290-A (GB)
Title: Improvements in and relating to regulating transformers
IPC: H01F29/04
Filed: 1929-01-18
Abstract: 304,290. International General Electric Co., Inc., (Assignees of Allgemeine Elektricitõts-Ges.). Jan. 18, 1928, [Convention date]. Regulating transformers.-In transformers of the kind in which a winding is divided into two parallel - connected sections each associated with a tapping switch, regulation being effected by changing the connections of one section by opening switch S1 and closing switch S2, then changing the connections of the other section by opening switch s1 and closing switch s2, the subdivision of the winding is confined to that part of the whole winding over which regulation is effective. In order to limit circulating current between the sections in the transition period when the sections contain unequal numbers of effective turns, resistances or chokes d12, d23, d34 are introduced between the switches as shown in Fig. 3. Alternatively, a single choke d, Fig. 4, may be connected between bars G, g along which tapping switches S, s slide.
Patent GB-921657-A (GB)
Title: Improvements in and relating to lawn mowers
IPC: A01D34/42
Filed: 1961-01-17
Abstract: 921,657. Lawn-mowers. H. C. WEBB & CO. Ltd., and F. W. TAYLOR. Jan. 15, 1962 [Jan. 17, 1961], No. 1842/61. Class 6(2). A lawn mower comprises a tubular metal frame a, preferably rectangular in plan, to side members b of which are secured rigid metal strips c forming attachment means for a pair of side plates h of a unit including a rotary cutting cylinder having helical blades c and an adjustable ledger blade f. The cutting cylinder is driven by chain and sprocket drive p, q, r, from the land roller s which rotates about a spindle u secured in plates w screwed to the strips c. The handles of the mower are pivoted at y to the plates w, the angle of the handles being adjusted by inserting a pin into one of the holes z in the plates.
Patent GB-850303-A (GB)
Title: Finned metal tubes
Inventor: JEVONS JOHN DUDLEY
IPC: F16L9/16
Filed: 1958-01-20
Abstract: 850,303. Making finned tubes. LUCAS (INDUSTRIES) Ltd., J. April 13, 1959 [Jan. 20, 1958], No. 1865/58. Classes 83 (2) and 83 (4). A method of making finned metal tubes comprises coiling helically a metal strip 3 of T-section and simultaneously uniting the contiguous edges by high-frequency resistance fusion. The edges of the steel, brass, copper, &c. strip 3 may be coated with a brazing material and the strip coiled on a mandrel by rollers. The web of the T-section may be softened by electric induction heating during coiling, and the edges united by highfrequency welding or brazing.
Patent GB-141762-A (GB)
Title: Improvements in charging devices for skips
IPC: B66B17/26
Filed: 1918-02-01
Abstract: 141,762. Schraeder, F. J. Feb. 1. 1918. Hoists, with guided skips.-Coal &c. from a bin A passes through a discharge opening a<1> controlled by a pivoted gate B into a bucket D connected to hoisting-apparatus, the arrangement being such that the opening a<1> is only uncovered when the bucket is in position to receive the material. The bucket D is provided with wheels d which run between guides E and rests on supports b<3>, b<4> secured to the side walls b<2> of the gate B. The axle d<2> of one wheel d projects and, on the downward movement of the bucket, strikes a lever c' which actuates a valve c<2>, Fig. 2, controlling the admission of working fluid to a cylinder C. The piston of the cylinder is connected to the gate B by ropes c, c' and, when moved in either direction, tilts the gate. The lever c<5> is held in normal position, Fig. 3, by a weight c<5> and is made in two parts connected by a knuckle-joint c<4> to permit the outer portion to swing upwards without actuating the valve on the upward movement of the bucket. When the bucket reaches the position shown in Fig. 3, the axle d<2> runs off the lever c<5>, and the weight c<6> actuates the valve to reverse the flow of working fluid and thereby bring the bucket &c. back to the position shown in Fig. 1.
Patent GB-955459-A (GB)
Title: Nickel-chromium alloys
IPC: C22C19/05
Filed: 1963-01-16
Abstract: A nickel based alloy comprises .Ni.55-62% .Cr.20-24% .Mo.7-11% .Nb.3-4.5% .C.\sO 0.2% .W.0-8% .Si.0-0.5% .Mn.0-0.5% .B.0-0.015% the balance, apart from residual deoxidizing agent, being iron and the total content of Ti and Al, if present, being not more than 0.4%. Tantalum, introduced as an impurity in the niobium, may be present in amounts up to one-seventh of the niobium content. Impurities may be present as follows:- .Mg.0.02-0.05% .S.up to 0.02% .Cu.up to 0.1% .P.up to 0.025% .N.up to 0.03% The alloys may be cast, forged and annealed at 1038  DEG C. for one hour.  Specification 881,845 is referred to.
Patent GB-704531-A (GB)
Title: Improvements in or relating to articles comprising synthetic resinous material
IPC: B29C43/00
Filed: 1950-01-26
Abstract: Synthetic resins and rubbers, particularly sheets, comprise integral parts one of which is sintered and microporous and the other denser and non-porous.  The denser part is normally thinner than the microporous part and sheets may be made by embossing a sheet of sintered microporous synthetic resin or rubber with heated embossing means.  Synthetic resins and rubbers specified are vinyl chloridevinyl acetate copolymer, vinylidene chlorideacrylonitrile copolymer, butadiene acrylonitrile copolymer and phenol-formaldehyde resin.  As plasticizers there may be used dioctyl phthalate, dimethoxyethyl phthalate, triethylene glycol di-2-ethylbutyrate, polyethylene glycol di-2-ethyl hexoate, butyl phthalyl butyl glycolate or a low-viscosity polyester resin.  Examples also describe the incorporation of a synthetic wax, vulcanizing ingredients such as ethyl zimate and sulphur, and pigments such as cadmium red and chrome orange, yellow and green.  The resin or rubber particles which are sintered may be obtained by precipitation from a latex. Partly microporous sheets may be used for the production of shoe uppers and insoles, handbags, wristwatch straps and table covers.
Patent GB-255338-A (GB)
Title: Improvements in sediment removers for boilers
IPC: F22B37/54
Filed: 1926-01-25
Abstract: 255,338. Isaacs, E. L. Jan. 25, 1926. Blow-down apparatus.-A sediment remover for boilers comprises a pipe having a number of nozzles provided with valves which are loaded to open progressively by the pressure of the fluid admitted to remove the sediment. The pipe 31, Figs. 1 and 3, with nozzles 52 is located near the base of the water chamber 14 of a locomotive boiler, and connected to pipes 36, 37, 42 with nozzles 49, 51 forming a loop within the sediment ring 11; the free ends 45 and 47 are reduced, and situated opposite the blow-off valve 48. Steam from the dome 16 may be supplied through connections 21, 22, 23 to the pipe 31; or water or other pressure fluid, with or without softening compounds, may be supplied through connections 61, 59, 58. The nozzle valves 67, Fig. 5, are so loaded by means of a coil spring 69 and a screwnut 68 that the nozzles nearest to the blow-off valve become active first. A shield 53 with tongues 54 bent downwards is arranged above the pipe 31 to prevent sediment from rising in the water chamber.
Patent GB-1421941-A (GB)
Title: Film packet holder for a camera
IPC: G03B19/04
Filed: 1973-01-16
Abstract: 1421941 Holders for film packets BERKEY PHOTO Inc 16 Jan 1973 [3 July 1972] 2136/73 Headings G2A and G2X A camera is arranged to accommodate rectangular film packets of two different sizes so that either is firmly located in the exposure position. The packets (P 1  and P 2 ), which may be of self-developing film, have the same width, but packet P 2  is longer than P 1 . A holder is fixed to the camera housing, and has a base section 17 and peripheral flange sections 18, 20, 21, 22, which flanges define a rectangular space which snugly accommodates the larger packet ? 2 . Flange 22 has a pair of recesses 22a, 22b, and flange 20 a similar pair of recesses 20a, 20b. The smaller film packet P 1  has lugs (15, 16), Fig. 3 (not shown) which fit into these recesses, so that the packet P 1  is securely held in the proper position for exposure through the lens 14. In this case the area "A" is exposed, whereas with packet P 2  area "B" is exposed.
Patent GB-1486512-A (GB)
Title: Device for protecting an audio amplifier against overload and/or short circuit
IPC: H03F3/30
Filed: 1975-01-17
Abstract: 1486512 Protecting transistors NOVANEX AUTOMATION NV 17 Jan 1975 [24 Jan 1974] 2210/75 Heading H3T An audio amplifier comprising a preamplifier 24, 25 controlling an output amplifier having at least one branch including an output transistor, 1 or 2, is protected against overload and/or short circuit by means limiting the current in a branch to a predetermined value, and means for uncoupling the output amplifier from the preamplifier if such a current is reached in at least one branch. The output currents of transistors 1, 2 flow through measuring resistors 7, 8 respectively. Increasing voltage across 7 or 8 causes transistors 44 or 45 respectively to turn on and to take away base current from driver transistors 3 or 4 respectively. Transistors 3 and 4 are normally driven by 17 acting as an amplifier, but on overload and/or short circuit 17 with 19 and resistors 18, 20 form a constant current source, so as to limit the output current. A transistor 35 is connected across measuring resistors 7, 8, and if the voltage across either 7 or 8 reaches a predetermined limit 35 fires thyristor 38, short circuiting transistor 17, and also 14. Transistor 14 together with 16 and resistors 15 and 34 form a constant current source providing a constant bias voltage across resistor 13. Resistor 18 may be half the value of resistor 15, so that the maximum current of 17, 19 is twice that of 14, 16, in order to equalize the gain of the amplifier for positive and negative signals. Amplifier 17 is driven via transistor 21 by a differential amplifier, formed by transistors 24, 25, which compares the input signal with a fraction of the output signal from potential divider 28, 29. A Zener diode (not shown) may be connected to the control electrode of thyristor 38. An LED (not shown) may be connected in series with the resistor 40 or 41 to make visible the firing of thyristor 38.
Patent GB-408768-A (GB)
Title: Improvements in or relating to admission apparatus for internal combustion engines of the liquid fuel injection type
IPC: F01L5/10
Filed: 1933-01-24
Abstract: 408,768. Cylinders. NAPIER & SON, Ltd., D., and VIGERS, R. W., 211, Acton Vale, Acton, London. Jan. 24, 1933, No. 2261. [Classes 7 (ii) and 7 (v).] The direction of flow of the charge, into the cylinder of a sleeve-valve engine, is regulated by providing partitions F<1> extending across an inlet gallery F from points on each cylinder wall between adjacent inlet posts C ; an inlet port G from an induction passage, behind the gallery F, is so arranged that whirling of the incoming charge, or not, is produced according to whether the engine is working as a directinjection oil engine or a combustible-mixture engine. As shown each cylinder has two inlet ports on one side of the partition and one on the other, and two ports G are provided, one of which can be closed by a slide valve H' ; by this means, in a direct-injection oil engine, whirling of the charge can be reduced to facilitate starting. Alternatively the two ports may be replaced by a long slot-like port and the valve H<1> by a plate having a single aperture which can be adjusted with reference to the slot-like port.
Patent GB-138126-A (GB)
Title: Improvements in and relating to the heating walls of coke ovens, retorts and the like
IPC: C10B21/22
Filed: 1920-01-24
Abstract: 138,126. American Coke & Chemical Co., (Assignees of Roberts, A.). Nov. 9, 1917, [Convention date]. Coke ovens.-A uniform heating-effect is obtained over the whole area of the heating wall by supplying initially a mixture of air and gas with one of the constituents in excessive proportion, and then, after a number of successive reversals of the direction of flow of the gases, supplying the balance of the deficient constituent in one or more stages, the same general direction of flow being maintained throughout the wall. As shown in connexion with a coke oven in which a net. work of intercommunicating passages 13 is formed in the heating-wall by blocks notched or recessed on three of their faces, an initial supply of gas is delivered through nozzles 23 at the upper end of the wall. The whole of the air necessary for combustlion is supplied through upcast passages 33 in a wall 12 between the heating-walls of two adjacent ovens to a flue 32, from which it is delivered through damper-controlled ports 28 to spaces 30 adjacent the smaller spaces 31 beneath the gas nozzles. The balance of the gas is supplied through vertical passages in the wall 12 and ports 36. Expansion spaces are preferably left between the wall 12 and the adjacent heating- walls except at the points where the vertical gas passages register with the ports 36. Vertical partitions may be formed in the heating-wall by using incompletely recessed blocks 18, 20. Carbon deposits in the ports 36 and their connecting passages may be burnt out by supplying air instead of gas through them. To facilitate this the pipe for the supplementary supply of gas may be connected through valves with both air and gas mains.
Patent GB-269973-A (GB)
Title: Improvements in and relating to the manufacture of resin-like bodies
IPC: C08G16/02
Filed: 1926-01-27
Abstract: 269,973. Griffiths Bros. & Co., London, Ltd., and Britton, R. P. L. Jan. 27, 1926. Polymerization or condensation products of aromatic alcohols; condensation products of formaldehyde and aromatic hydrocarbons.-Resinous bodies soluble in organic solvents are obtained by treating monohydric aromatic side-chain alcohols with condensing agents. The condensing agents, such as sulphuric or phosphoric acid or phosphorus pentoxide, may be used singly or in combination, and are preferably taken in such amount that at least one-fifth of a molecule is present for each molecule of alcohol. The initial stages of the reaction are generally carried out at a temperature not higher than 180‹ C., but the temperature may be raised later to about 180‹ C. to regenerate the condensing agent. The reaction may be carried out under pressure. The alcohol may be produced in situ by reaction between an aromatic hydrocarbon and formaldehyde, or a substance giving rise thereto. In this modification only phosphoric acid or phosphorus pentoxide is used as condensing agent, and the preferred reaction mixture comprises one molecule of condensing agent and five molecules each of hydrocarbon aud formaldehyde; the reaction mixture is preferably maintained in an emulsified condition by agitation. The alcohol or the hydrocarbon giving rise thereto may contain substituents other than hydroxy groups, such as halogen, in the nucleus. The reaction may be carried out in presence or absence of a solvent, such as an excess of hydrocarbon, and the alcohol or its generators may be added in stages to the condensing agent, the latter being regenerated as required between the additions. The products may be purified by dissolving them in an organic solvent and centrifuging the solution, with or without the addition of a little alkali, and if the solvent is volatile in steam the solution may be steam-distilled. Alternatively, the reaction mass may be treated with water and the resin separated and treated with steam, or the resin may be dissolved in a fused hydrocarbon, such as naphthalene, with or without addition of water, and the solution, after evaporation of the acid layer treated to recover the resin. Alternatively, the reaction mass may be treated with steam at super-atmospheric pressure and the resinous layer separated. In any event, the resin may be further purified by treatment with alkali particularly by fusion with lime. Examples describe the condensation of benzyl alcohol with the use of sulphuric acid as condensing agent, the condensation of cinnamic alcohol with the use in turn of phosphoric acid and sulphuric acid as condensing agents, and the condensation of naphthalene and paraformaldehyde with the use as condensing agent of dehydrated phosphoric acid. The products may be dissolved in organic solvents and used as varnishes or paint excipients. Specification 16245/07, [Class 2, Acids and salts, Organic &c.], is referred to.
Patent GB-1156486-A (GB)
Title: Ketonic Flavouring Agents
Inventor: WINTER M
IPC: A23L27/20
Filed: 1966-05-02
Abstract: 1,156,486. Methylthio-butanone. R. FIRMENICH, G. FIRMENICH, R. E. FIRMENICH, and F. H. FIRMENICH, [trading as FIRMENICH & CIE.]. 2 May, 1966 [30 April, 1965; 18 April, 1966], No. 2387/69. Divided out of 1,156,472. Heading C2C. [Also in Division A2] 1-Methylthio-butan-2-one was prepared in the same manner as methylthioacetone according to the method described in J.A.C.S. 76, 114 (1954) by condensing 0À122 mole of 1-chlorobutan-2-one [obtained according to the method described in Ber. 82, 229 (1949)] with 0À11 mole of sodium methylmercaptide. The reaction product was separated by filtration from the NaCl formed in the reaction and concentration of the filtrate. By distillation of the residue there were obtained 8À2 g. of pure 1-methylthiobutan-2-one distilling at 52-53‹ C./8 Torr. n D <SP>22</SP> = 1À4700; d 4 <SP>22</SP> = 0À9970.
Patent GB-284244-A (GB)
Title: Improvements in the preparation of emulsions or aqueous dispersions of india rubber and other similar materials
IPC: C08J3/03
Filed: 1928-01-25
Abstract: 284,244. Touchon, J. M. A. Jan. 25, 1927, [Convention date]. Void [Published under Sect. 91 of the Acts]. Emulsions, making.-Rubber emulsions for use as a substitute for natural latex are prepared by passing a thick rubber solution together with water containing an emulsifying agent through a high speed emulsifying machine and removing the rubber solvent from the emulsified product by low temperature distillation. Alternatively finely divided rubber, preferably that obtained by spray-drying latex which containes natural dispersing agents, is introduced simultaneously with an emulsifying solution, into the machine. Dispersing or stabilizing agents may be added to the natural latex before drying or to the rubber resulting from its coagulation. Stabilizing agents may also be added to the rubber before delivery to the machine. Sulphur, accelerators, and colouring or loading materials may be incorporated either during the emulsification process or by subsequent treatment in the machine. Mixed emulsions of rubber and materials such as casein, cellulose esters or viscose, which have no solvent in common with rubber may be prepared either in one operation by passing the mixed ingredients through the machine, or by passing through a mixture of the separately prepared emulsions. The invention may be applied to gutta percha, balata, synthetic rubber and the like and to vulcanized rubber. Solvents suitable for use with the last-named material are hydrocarbons and their halogen derivatives or nitrates, phenols, fatty acids, ethers, fatty oils, terebine, petroleum, shale oil, bitumen, tar, anthracene. The invention is also stated to include the incorporation, by machines of the kind specified, of sulphur, aculination, and colouring or loading materials into natural latex.
Patent GB-271924-A (GB)
Title: Improvements in apparatus for the electromagnetic separation of ores
IPC: B03C1/14
Filed: 1926-01-28
Abstract: 271,924. Davies, A. Jan. 28, 1926. Magnetic separators.-In a magnetic separator comprising upper and lower magnets and an interposed horizontal conveyer, the conveyer is stepped to form at different levels a plurality of surfaces which are always in horizontal positions. The upper rotating magnet 10 comprises an intermediate portion 10<b> and an outer portion 10<c> on the lower surface, of which are formed circular rings 16, 17, 18 of different depth,. and with bevelled edges. The conveyers 18 are suspended by arms 20 mounted on rock shafts 22 which are moved by arms 21 carrying at their inner ends rollers 26 engaging a cam surface 25 mounted on the portion 10<b> of the magnet 10. Each conveyer comprises three sections 19<a>, 19<b>, 19<c>, Fig. 5, which are arranged as shown below the rings 16, 17, 18 and are provided with side flanges and transverse flanges 28 which are secured by bolts &c. 29 so that each section of the conveyer is adjustable vertically and relatively to its corresponding ring 16, 17, or 18. Each section is provided with side walls 30, Fig. 6, which are diminished to form low heads 31 as the section approaches the corresponding ring, the forward end of each bead 31 being curved inward at 32 and the forward edge of each tray being curved so as to concentrate the gangue in the centre of each tray. The lower magnet comprises magnets 35, 36, 37 which are separated by members 34, and are adjustably mounted by a belt 38 passing through slots 39 in the magnets and the members 34. The separated material is removed by take. off belts which may be arranged as described in Specification 251,821. Specification 105,354 also is referred to.