baber/WOPTO huggingface dataset:
Patent GB-546845-A (GB)
Title: Improvements in and relating to electric valve control systems
IPC: B23K11/24
Filed: 1941-06-27
Abstract: 546,845. Control systems for resistance welding &c. BRITISH THOMSON-HOUSTON CO., Ltd. June 27, 1941, No. 8086. Convention date, June 29, 1940. [Class 38 (iv)] Thermionic control.-Reversely connected immersion-igniter valves 5, 6, in which the excitation circuits each contain a unidirectional conducting device 14, 15, have a pair of reversely connected grid controlled discharge devices 21, 22 connected back to back in the common portion of the excitation circuits and adapted by phase control of their grid voltages to advance and retard the time of ignition of the valves 5, 6. The excitation circuits may also contain timing means 35 to determine a sequence of welding current impulses for example and a relay contact delaying closure of the excitation circuit until the cathodes of the discharge devices 21, 22 have become heated. Adjustable resistances and a condenser 41 constitute a network whereby any desired phase position may be given to the grid voltages of the devices 21, 22 and a manual switch 47 may provide means for selectively applying voltages in either of two phase relationships.
Patent GB-885921-A (GB)
Title: Loading machines of the jigging type
IPC: B65G65/14
Filed: 1958-03-13
Abstract: 885,921. Jigging shovels. GEWERKSCHAFT EISENHUTTE WESTFALIA. March 13, 1958 [March 14, 1957], No. 8156/58. Class 78 (1). [Also in Groups XXI, XXXII and XXXIV] A machine for loading and conveying loose material produced in underground workings comprising a rail-mounted chassis on which is pivotally mounted a loading device consisting of a jigging conveyer trough having its forward end constructed as a shovel and supported on .the floor of the working by sliding runners is characterized in that the loading device is connected to the chassis by a universal joint and is slidable longitudinally on the chassis. The conveyer trough 1, Figs. 1, 2, reciprocated by piston engines 4, is supported at its rear end on a chassis 6 mounted on rails, and at its front end is formed as a shovel provided with teeth 11 and supported by runners 3. To support the trough 1, the chassis frame is formed with a guide 40, Fig. 10, in which is slidable a plate 41 fixed to a cylindrical member 42 provided with slots 46 to receive an axle 45 secured to a cylindrical member 44 rotatable on the member 42. This axle is secured to plates 47 which are connected by springs 48 to members 49 on which is bolted the trough 1. Secured to each side of the chassis 6 by brackets 23, Fig. 6, are piston-rods 10 co-operating with separately controlled hydraulic or pneumatic cylinders 9 which are secured to the trough 1, through blocks 25 and spring elements 12 (see Group XXXII). When the cylinders are uniformly loaded, they press the trough towards the material to be conveyed, whilst on being differently loaded, they pivot the trough about a vertical axis to the dotted line position shown in Fig. 2. The chain is secured to its supporting rails by clamps 7 which are hinged on the wheel carriers 16, Fig. 6, and are actuated by cams (not shown) turned by piston-andcylinder mechanism 13, 18 through linkages 19, 20.
Patent GB-432096-A (GB)
Title: Explosive priming mixture
IPC: C06B35/00
Filed: 1935-03-15
Abstract: The potassium salt of dinitrophenylazide is prepared by dissolving diazodinitrophenol in acetone and adding to this an aqueous solution of potassium azide, the temperature of the solution being maintained below 50 DEG  C.  The salt is precipitated and filtered.  Other alkali and alkaline earth salts are prepared in the same way for use in explosive priming compositions instead of the lead salt as described in Specification 406,228.
Patent GB-526371-A (GB)
Title: Improvements relating to mechanical stokers, travelling grates and the like
IPC: F23H11/00
Filed: 1939-03-14
Abstract: 526,371. Travelling grates. THOMPSON (WOLVERHAMPTON), Ltd., J., and RUDDOCK, J. T. March 14, 1939, No. 8193. [Class 51 (i)] In a travelling grate comprising bars 6 mounted on transverse carrier bars 2 attached to driving chains 3 the bars 6 are provided at the ends with projections 6e and recesses 6f having curved surfaces concentric with the pivots of the links of the driving chain and adapted to engage with the corresponding parts of adjacent rows of bars in such a manner that the gaps between adjacent rows of bars as they pass round the rear drum are closed to prevent passage of ashes. The fuel supporting surfaces of the bars are serrated as shown at 9 and the serrations are extended to the upper portions of the sides of the bars in such a manner that projections on one side are opposite to recesses on the other. At the sides of the grate bars 7 of the form shown in Fig. 6 are provided. These bars are wider than the bars 6 and are secured to the carrier bars 2 by cotter pins 11. The lower edges of the bars 7 are provided with guide flanges 7d.
Patent GB-893589-A (GB)
Title: Process for the production of tetra-1.4-dithiin
IPC: C07D339/08
Filed: 1960-03-09
Abstract: Tetracyano - 1,4-dithiin is prepared by reacting disodium dimercaptomaleonitrile with a sulphur chloride in a substantially anhydrous, liquid reaction medium which is at least a partial solvent for the said reactants and which is substantially unreactive towards said reactants, said medium being an organic compound free of active hydrogen.  Specified sulphur chlorides are sulphur monochloride, sulphur dichloride, thionyl chloride, sulphuryl chloride or those formed in situ from elemental sulphur and chlorine, e.g. by reaction of chlorine with the sulphur impurities in disodium dimercaptomaleonitrile.  Specification 891,093 is referred to.
Patent GB-477244-A (GB)
Title: Process and apparatus for the manufacture of glass sheets by drawing
IPC: C03B17/06
Filed: 1937-03-22
Abstract: 477,244. Making sheet glass. SOC. ANON. DES MANUFACTURES DES GLACES ET PRODUITS CHIMIQUES DE ST.- GOBAIN, CHAUNY, ET CIREY. March 22, 1937, No. 8355. Convention date, March 23, 1936. [Class 56] A process for making sheet glass consists in drawing the sheet from a mass of glass situated at the entry to the pass between devices for rolling glass, the mass of glass being kept in motion by the rolling devices. A pair of parallel horizontal rollers 1, Fig. 1, may be fed by two streams of glass 8 which flow from the furnace along two channels 7. The glass accumulates above the rollers in a mass 6 from which a sheet 4 is drawn upwards by any suitable means. The movement of the glass into the mass 6 stabilizes the position of the sheet, and the thickness of the sheet can be regulated by altering the speed of the rollers without altering the temperature of the glass, or the rate of drawing. Part of the glass 6 may be fed downwards to form a rolled sheet 2, which may be thick enough for commercial purposes or may be so thin that it is used for cullet. In order to obtain the drawn sheet 4 of uniform thickness, uniformity of temperature across the width of the streams 8 may be obtained by arranging for the depth of the channels 7 todecrease towards the sides, as shown in Fig. 3, or by cooling more or less of the rollers by watercooled radiators 12. The depth of glass in the two channels 7 may be unequal, or the rollers may be fed by a single channel. Each of the rollers may be replaced by a chain of several rollers, or by an endless band which passes over a pair of rollers and forms the bottom of a channel 7.
Patent GB-317499-A (GB)
Title: Differential gear mechanism for well-drilling apparatus
IPC: F16H37/00
Filed: 1928-03-19
Abstract: 317,499. Zerbe, L. E., and Archer, M. T. March 19, 1928. Borehole apparatus. - Automatic well-drilling apparatus includes a drawworks comprising a main shaft and a quill shaft rotating thereon, differential gearing connecting the shafts, a sprocket on the quill shaft and several sprockets on the main shaft connectible with the shafts by clutches, and brake drums connected one with each shaft. The prime mover, through a chain and sprocket 34, rotates a housing 30 carrying planetary bevel gears 28 meshing with opposed bevel gears 18, 27, keyed respectively to a shaft 14 and to a quill shaft 21 supported on roller bearings 22, 23; the quill shaft 21 may be locked to the shaft 14 by a clutch 41, the parts of the differential gearing being then locked together. Through a clutch 45, the quill shaft may be engaged with a sprocket 42 and thus, through chain 60, rotate connected sprockets 58, 59 which are loose on the line shaft 56; from the sprocket 59, the drill rotating mechanism is driven. The shaft 14 carries loose sprockets 47, 48 selectively locked to the shaft through a clutch 49, whereby, through chains 62, 63, a variable-speed drive is obtained for the line shaft 56; the latter drives the hoisting drum 7 at variable speeds as through chains 66, 67. The housing 30 forms a lubricant reservoir.. Brake drums 54, 55 are provided on the shaft 14 and quill shaft 21 respectively. The clutches are controlled through levers 81, 82, 83 provided with a control plate 80.
Patent GB-1206466-A (GB)
Title: Improvements in or relating to the cultivation of micro-organisms
Inventor: EVANS GORDON HOMER
IPC: C10G32/00
Filed: 1967-02-22
Abstract: 1,206,466. Yeast &c. BRITISH PETROLEUM CO. Ltd. Jan.29, 1968 [Feb. 22, 1967], No.8358/67. Heading C6F. In a process which comprised cultivating in a broth a micro-organism capable of growing on at least some straight chain hydrocarbons, in the presence of a hydrocarbon feedstock which consists at least in part of straight chain hydrocarbons, an aqueous nutrient medium and a gas containing free oxygen, the cultivation is carried out continuously with the introduction of hydrocarbon at a rate such that the concentration of hydrocarbon in the broth is less than 0À5 gram/ litre. Examples and comparative experiments wherein the exess of n-paraffin in the broth amounted to 0À35, 0À49, 5À2 and 10À6 grams per litre, respectively, demonstrate that higher yields and greater utilization of hydrocarbon are obtained when the concentration of hydrocarbon is restricted as given above. Preferably the cultivation is carried out, after start-up, without the addition to the broth of microorganism. Hydrocarbon feedstock: paraffins and/or olefins, particularly normal paraffin fractions obtained by molecular sieve treatment of a distillation fraction of petroleum origin e.g. kerosine or gas oils. Many species of microorganisms are mentioned. The examples and comparative experiments relate to the cultivation of Candida lipolytica on C14-C17 normal paraffins.
Patent GB-1416434-A (GB)
Title: Manufacture of pyrimidines
IPC: C07D239/46
Filed: 1972-02-23
Abstract: 1416434 2 - Alkylamino - 4 - hydroxypyrimidines IMPERIAL CHEMICAL INDUSTRIES Ltd 14 Feb 1973 [23 Feb 1972] 8359/72 Heading C2C Pyrimidines of formula wherein R is H or an optionally substituted alkyl or aryl group, R<SP>1</SP> is H or an alkyl group, R<SP>11</SP> is an alkyl group and R<SP>111</SP> is H or an alkyl group are obtained by adding an N-alkyl- or N,N-dialkyl-guanidine to an ester (e.g. methyl or ethyl) of an acylacetic acid of formula at 80-170‹ C. in a solvent which is an inert hydrocarbon or inert halogenated hydrocarbon (e.g. xylene or monochlorobenzene) in such conditions that any water or alcohol formed is rapidly removed by distillation. The molar ratio of alkylguanidine to acylacetic ester is preferably between 0À8 : 1 and 1À2 : 1 and the alkylguanidine is conveniently added to the ester as a solution or suspension obtained from an alkylguanidine salt and an alkali metal alkoxide or hydroxide in a C 1-6  alcohol or water or mixtures of these. The pyrimidines find use as fungicides and the examples describe the preparation of 5-nbutyl - 2 - ethylamino - 4 - hydroxy - 6 - methylpyrimidine.
Patent GB-397409-A (GB)
Title: Improvements in method of manufacturing alumina
IPC: C01F7/32
Filed: 1933-03-21
Abstract: A basic sodium or potassium alum precipitated by heating a normal alum solution to temperatures above 140 DEG  C. is calcined at 750-1000 DEG  C. and the undecomposed alkali sulphate leached out from the alumina formed.  Residual sulphur trioxide may be removed from the alumina by leaching with water containing a hydroxide or carbonate of ammonium, sodium, or potassium.  The basic alum is preferably first dehydrated at 500-600 DEG  C., and the anhydrous sulphur trioxide and sulphur dioxide driven off at the higher temperatures are converted into sulphuric acid.  The mother liquor from precipitating the basic alum, together with the alkali sulphate recovered by leaching and the sulphuric acid obtained from the gases evolved during heating, may be used in the preparation of a normal alum solution from aluminiferous ores. Specification 397,411 is referred to.
Patent GB-287565-A (GB)
Title: Improvements relating to scrapers for cylinders and rollers for paper making machines, calenders and similar machines
IPC: D21G3/00
Filed: 1928-03-21
Abstract: 287,565. Akre, S. E. March 25, 1927, [Convention date]. Doctors for cylinders and rollers.-A scraper 2, Fig. 2, for cylinders and rollers in paper-making machines, calenders &c. is supported against an abutment 28 in a channel the side walls 20 of which are springy. The parts 20 may be carried by a beam or by a spring strip secured to a beam and one or both may be divided into tongues or, in another alternative, one of them is replaced by a series of spring strips. British Specification 176,896 and U.S.A. Specification 1594284 are referred to. The Specification as open to inspection under Sect. 91 (3) (a) comprises also the form shown in Fig. 2 (Cancelled) in which fingers are cut from the back of the scraper blades 2. In the form shown in Fig. 3 (Cancelled) fingers are cut from the front edge of a metal strip. In another form the blade 2 is connected to a plate 4 which is perforated by slits &c. which do not meet the jedges, and in a further modification a tongued plate is placed beside this apertured plate and the blade fitted between them. This subject-matter does not appear in the Specification as accepted.
Patent GB-100696-A (GB)
Title: Improvements in Means for Selecting and Separating Threads and the like in Textile Machines.
Inventor: HATILAWAY EDGAR FAY
IPC: D03J1/14
Filed: 1915-04-26
Abstract: 100,696. Hathaway, E. F. and Lea, C. April 24, 1914, [Convention date]. Healds &c., threading.-In a warpdrawing or other textile machine in which threads &c. are to be separated from a warp and presented individually to a thread-placing device, a separating and presenting device is provided that is moved along its actuating-shaft in unison with the movements of the carriage that carries the thread-placing device. The invention is described as applied to the warp-drawing machine described in Specification 6211/15, in which a hooked needle is operated to draw a separated thread through a drop detector, a selected harness, and the reed. The separator shaft 370 is rotated by spur-wheel and chain gearing from the main shaft, and on it is splined a sleeve 291 with a corrugated tapered nose 373, which strokes the threads into parallelism. A spirally-grooved separating-member 374 is secured in any desired position on the sleeve 291, a pin 376 on a spring-controlled disk 379 passing through a collar 377, secured to the sleeve, and projecting into a selected hole in a flange 375 of the member 374. A hook-shaped bracket 382 engages a groove in the collar 377 and is fastened to an upright arm on the carriage, which faces the drop detectors for threading. This carriage has secured to it a band moved by the mechanism for moving a similar band secured to the needle carriage, so that the separating-device and the needle carriage are moved across the machine in unison. Specification 4360/09 also is referred to.
Patent GB-360326-A (GB)
Title: Improvements in processes for the production of sulphur dioxide and ammonium sulphate
IPC: C01B17/48
Filed: 1931-03-20
Abstract: Dilute gaseous sulphur dioxide and ammonia are passed into a concentrated, preferably saturated, solution of ammonium sulphate whereby ammonium sulphites are formed and ammonium sulphate is salted out, the ammonium sulphite solution formed being treated with sulphuric acid to form concentrated sulphur dioxide and an ammonium sulphate solution which is treated as before.  Water evaporated from the liquors during the absorption stage may be replenished, preferably during or after the decomposition of the sulphite containing liquors with sulphuric acid.  An example describes the treatment of waste gases from a sulphuric acid contact plant.
Patent GB-714589-A (GB)
Title: Improvements relating to electrostatic precipitators
IPC: B03C3/36
Filed: 1951-04-13
Abstract: 714,589. Electrostatic filters. HEINRICH, D. O. Jan. 30, 1952 [April 13, 1951], No. 8628/51. Class 39(1) An electrostatic precipitator electrode assembly comprises parallel plane plates 1 and channel - shaped members 2 secured between the plane plates to form gas passages of square cross - section, each containing a central discharge electrode 3. The discharge electrodes may be round wires on square tubes each having either sharp edges to produce corona over all or part of its length or with rounded edges and an ionization trip at the bottom.
Patent GB-1224719-A (GB)
Title: Dielectric track-type detector for slow neutrons
IPC: G01T5/10
Filed: 1970-02-23
Abstract: 1,224,719. Detecting neutrons. UNITED STATES ATOMIC ENERGY COMMISSION. 23 Feb., 1970 [13 March, 1969], No. 8672/70. Heading G6P. In a slow neutron detector, boron or lithium is employed in conjunction with a trackdetecting material in which the neutron-alpha reaction produces alpha defect tracks which may be etched and viewed through a microscope. The lithium and boron compounds are dispersed in a solution of the detecting material which is dried to form a film in which the lithium and boron remains uniformly dispersed. The compounds which preserve uniformity of distribution during the drying process are tetraphenyl boron, hexamethyl borazine, lithium ricinoleate and carborane. The alpha particle-detecting material is plasticized cellulose nitrate.
Patent GB-1183326-A (GB)
Title: Foamed Polyurethane Compositions
IPC: C08J9/35
Filed: 1966-02-28
Abstract: 1,183,326. Laminates. B.H. TECHNICAL DEVELOPMENTS Ltd., and A. P. PERRIN. 28 Feb., 1967 [28 Feb., 1966], No. 8699/66. Heading B5N. [Also in Division C3] A laminate may be produced by depositing on a continuously moving conveyer the surface of which comprises paper, board or other facing material, a mixture of an inorganic particulate material and a partially expanded polyurethane foam material and providing an upper surface for the mixture which is the surface of a second conveyer moving at substantially the same speed as the first conveyer, which upper surface is also of paper, board or other facing material. In a specific example, granules of foamed glass or sintered shale are fed at a controlled and uniform rate from shoot 12 on to a moving web of paper 13 by means of vibrating hopper 14. A froth of polyurethane foam precursor is then deposited on to the paper prior to the granules and/or cutting across the fall path of the granules from a hose 15 which leads from a mixer 16. The web of paper is then carried by the driven belt conveyer 21, above which is a second driven continuous belt conveyer 24 on to which is supplied a second web of paper from supply roll 26. The second conveyer is located generally at a point where. the foam aggregate mixture has almost but not completely completed its expansion. The product emerging from between the two conveyers at 27 consists of a continuous laminate comprising the composition of polyurethane foam and particulate material with facings of paper on either side thereof. This continuous laminate may then be cut by the guillotine device 22.
Patent GB-692524-A (GB)
Title: Improvements in rotors for turbines or compressors
IPC: F01D5/06
Filed: 1951-04-16
Abstract: 692,524. Turbine and compressor rotors. GENERAL MOTORS CORPORATION. April 16, 1951 [May 11, 1950], No. 8751/51. Class 110(iii) A turbine or compressor rotor comprises a series of discs which are interconnected for common rotary movement by means of splines on axial extensions of the discs. The extension 24 of the disc 18 is formed with external teeth 30 which engage' with internal teeth 32 formed on the adjacent extension of the next disc. The discs abut at 34 and are clamped together by means of the flange 54 at one end of the shaft 20 and the screwed collar 36 at the other end of the shaft 20. The outer surface of the extension 24 serves to form a sealing surface for the flanges 26 of the sealing rings 14 on the stator blades 12. The spline teeth are preferably of involute form and may be formed parallel with the rotor axis.
Patent GB-959225-A (GB)
Title: Improvements in or relating to mounting arrangements for transducing heads
Inventor: HUGHES EDWARD
IPC: G11B5/48
Filed: 1961-03-10
Abstract: 959,225. Supporting transducing heads. AUTOMATIC TELEPHONE & ELECTRIC CO. Ltd. March 7, 1962 [March 10, 1961], No. 8802/61. Heading G5R. Heads 19 are supported on a mounting 11 which is in turn adjustably mounted to members 4, 5 of a cage (Fig. 1 not shown) surrounding a record drum. Wedge means 31-35 provide a coarse ("001") adjustment for each end of the mounting 11, which is adjusted azimuthally with the aid of verniers 39. Individual head supports 17 have their portions 43 slotted through the face 15 of the mounting 11 and the heads 19 are supported by blade-springs 21 and are finely adjusted by screw means 22 in conjunction with known electronic methods.
Patent GB-400508-A (GB)
Title: Improvements in gear mechanisms
IPC: F01C1/10
Filed: 1933-03-23
Abstract: 400,508. Rotary engines. MOINEAU, R. J. L., 7, Rue Lebouis, Paris. March 23, 1933, No. 8843. Convention date, April 29, 1932. [Class 110 (ii).] A rotary pump, engine, or compressor has a rotor 2 and a stator 1 shaped helically on the co-operating surfaces, in which one or both rotor and stator is formed partly, or wholly, of elastic material such as rubber, leather, wood, or the like, and in which one element has one more helical thread than the other. More than one rotor may co-operate with the stator. The rotor is supported on a flexible shaft 4, or connected to two cardan shafts. The rotor may be built up of a central core surrounded by a series of close-fitting discs such as 17, Fig. 6, or coils of wire or textile material. The element 1 may have two helical threads and the rotor 2 one thread, and the pitches may vary. Portions of the rotor may have reversed pitches to secure axial balance. The discs forming a rotor may be split, or fit loosely on the core 2a. The density of the rotor is preferably equal to that of the working fluid, so that the rotor floats.