baber/WOPTO huggingface dataset:
Patent GB-1512123-A (GB)
Title: Detection of specific compounds using a liquid chromatograph
IPC: G01N30/84
Filed: 1976-03-16
Abstract: 1512123 Chromatography THERMO ELECTRON CORP 16 March 1976 [17 Sept 1975] 10522/76 Heading B1H [Also in Division G1] A system for measuring the amount of a predetermined compound in a sample comprises a specific gas detector having an input port and means for providing a signal representative of the amount of the specific gas which enters the detector through its input port, a liquid chromatograph comprising a column provided with an inlet and an outlet, a liquid solvent reservoir and means for injecting the sample mixed with solvent into the inlet end of the column so that the effluent from the outlet end of the column consists of the solvent in which the predetermined compound is separated from other constituents of the sample, a cold trap upstream from the specific gas detector and comprising an input port and an output port and means for maintaining the trap at a low temperature and pressure such that of the gas mixture fed into the trap and consisting of the specific gas solvent in a gaseous state and other gaseous components, at least the specific gas will remain in the gaseous state for passage through the output port to the specific gas detector and at least the other gaseous components will condense or solidify in the cold trap, and means joining the output end of the column and input end of the cold trap and including means for forming the specific gas from the predetermined compound or compounds. The means for forming the specific gas may comprise means for adding thermal energy to the mixture passing through the joining means. The system is particularly applicable to the analysis of N-nitroso compounds by applying sufficient thermal energy to said compounds to form nitric oxide gas and subsequently detecting and measuring the amount of said gas formed.
Patent GB-363929-A (GB)
Title: Improvements in or relating to the production of fine threads from cellulose derivatives
IPC: D01F2/28
Filed: 1931-04-09
Abstract: 363,929. Fining and improving artificial silk &c. SUTER, H., 116, Nordstrasse, Zurich, Switzerland. April 9, 1931, No. 10538. Convention date, April 30, 1930. [Classes 2 (ii) and 15 (ii).] When fining and improving artificial silk &c. composed of cellulose derivatives, particularly cellulose acetate, by processes involving treatment with swelling baths containing halogenated hydrocarbons, and stretching of the swollen threads, deleterious effects of the baths on the threads, such as may occur after extended use, are obviated by the addition to the baths of small quantities of unsaturated organic substances such as butylene, olein, olive oil, linseed oil, and linolic acid. The smoothness of the threads is improved by the addition of fatty acids, fats or oils to the swelling baths ; the above stated additions which are of an oily character, have this effect. In examples, cellulose acetate silk yarns are stretched from 6 to 9 times their length after treatment with the following baths: methylene chloride, petroleum ether, olein, and olive oil ; methylene chloride, carbon tetrachloride, bone oil, and butylene ; methylene chloride, benzene, stearic acid, olive oil and linseed oil. The stretched threads have substantially increased dry and wet strengths. The swelling baths may contain organic substances which repress the dissolving action of the swelling medium as described in Specification 358,512.
Patent GB-610713-A (GB)
Title: Aluminothermic or like exothermic processes for the extraction of metals
IPC: C22B5/06
Filed: 1945-04-27
Abstract: An aluminothermic or like exothermic process, for the extraction of metals from metal compounds, includes the step of driving from the slag, formed by the process, some of the metal compound otherwise retained in the slag, by vapourizing the said metal compound out of the slag while still liquid.  The vaporization may be effected by adding to the slag, towards the end of the first exothermic reaction, a second exothermic mixture which generates sufficient heat to cause vaporization of the metal compound.  A hydrogen-containing reagent, such as water, may be added to the second mixture before it is put in the reaction vessel.  The use of a mixture containing barium peroxide to evaporate chromium oxide from a slag is referred to.
Patent GB-309185-A (GB)
Title: Improvements in or relating to means for introducing electric current into a metallic vacuum discharge vessel
IPC: H01J13/26
Filed: 1929-04-05
Abstract: 309,185. Dõllenbach, W. April 7, 1928, [Convention date]. Addition to 252,698. Vacuum tubes; low-pressure metallic-vapour apparatus.-In means for insulating and supporting a conductor according to the parent Specification, the insulating support is arranged outside the wall of the discharge device and is attached to the conductor near the point at which the conductor passes through the wall. As shown in Fig. 1. the insulator J for the conductor L is secured between two flexible portions F of the wall, to which the conductor is attached at the point S, and the insulating support consists of a metal ring B, an insulator I, and a metal cap K to which the conductor is attached near the point S. The receptacle formed by the parts B, I, K mav be filled with an insulating cooling liquid such as oil so that any flashing over occurs on the outer side of the insulator 1 and not at the insulator J; or such protection may be ensured by arranging that the points of minimum breakdown voltage are at a distance from the insulator J. In the modification shown in Fig. 2, the flexible portions consist at the top of two diaphragms F', and at the bottom of a single diaphragm F<2>, and the support consists of three insulators I mounted between the ring B and cap K. One or more screens R<1> may be secured to the wall so as to protect the diaphragm F' against heat radiated from the electrode E. The diaphragm F<1> may be welded to a collar on the conductor.
Patent GB-372905-A (GB)
Title: Improvements in or relating to electrical burglar alarm devices
IPC: G08B13/12
Filed: 1931-04-10
Abstract: 372,905. Burglar alarms. MORGAN, H. A. and ROGERS, W. E., Bella Vista, Sandycroft, Flintshire. April 10, 1931, No. 10637. [Class 118 (i).] A burglar alarm and shop-window protective device comprises one or more electric switches 15 connected to a network of cords 10 maintained taut by a spring-urged roller 12 so that when the cords are disturbed the switches close an alarm circuit which, in the case of a shop window, may also cause a spring-urged blind or shutter 21 to be swiftly drawn up across the window aperture. Each switch 15 may comprise a plunger 34 retained by a spring 33 a short distance from a contact member 28 and connected at 37 to a cord 10, so that increased tension on the latter will close a circuit including the leads 29, 32. Alternatively the switch is arranged so that the cutting of a cord 10 closes the circuit. A solenoid-actuated brake pad 23 is withdrawn by the closure of the electric circuit, thereby allowing a spring-urged roller 20 to draw up from the roller 18 the blind 21 by means of cords. A rigid screen may be used instead of the blind, and a camera may be automatically actuated for photographing the burglar.
Patent GB-864266-A (GB)
Title: Improvements in and relating to methods of making junctions in semi-conductor materials
Inventor: SHIELDS JOHN
IPC: H01L29/00
Filed: 1958-04-02
Abstract: 864,266. Semi-conductor devices. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. March 24, 1959 [April 2, 1958], No. 10641/58. Class 37.  An NPN or PNP arrangement is produced by providing a gold layer on a highly compensated semi-conductor body containing both donors and acceptors, the predominant activator having the lower segregation coefficient, and then heating and cooling to alloy the gold to the body and segregate the activator into layers. The semi-conductor may consist of N or P-type silicon or germanium and the activators of boron and phosphorus, or of aluminium and phosphorus. A PNPN device may be formed by alloying a suitable impurity to the opposite surface of the body.
Patent GB-243607-A (GB)
Title: Purifying materials for acetylene and other gases
IPC: C10K3/00
Filed: 1925-04-24
Abstract: A purifying material for acetylene and other gases is prepared from stable, chloride-free, basic hypochlorite of calcium or magnesium containing from 30 to 40 per cent available chlorine by mixing with a binder such as cement or plaster and a little water and allowing the mass to solidify.  Heating and reduced pressure may be used to facilitate drying.  Substances which are adapted to render the mass porous may be added.  For example, metallic aluminium, magnesium or alloys thereof which, in the alkaline medium give off hydrogen may be added.  Ammonia and hydrogen peroxide may also be used but as they reduce the content of available chlorine they are less suitable.  The stable chloride-free, basic hypochlorite of calcium may be prepared according to the process described in Specifications 182,927 and 188,662, [both in Class 1 (iii), Oxides &c., Metallic].ALSO:A purifying material for acetylene and other gases is prepared from stable chloride-free, basic hypochlorite of calcium or magnesium containing from 30 to 40 per cent available chlorine by mixing with a binder such as cement or plaster and a little water and allowing the mass to solidify.  Heating and reducing pressure may be used to facilitate drying.  The stable chloride-free, basic hypochlorite of calcium may be prepared according to the process described in Specifications 182,927 and 188,662, and the corresponding magnesium salt by a similar process.
Patent GB-182922-A (GB)
Title: Improvements in and relating to paper carriages for typewriting and like machines
IPC: B41J11/22
Filed: 1921-04-12
Abstract: 182,922. Marks, E. C. R., (Corona Typewriter Co., Inc.). April 12, 1921. Paper-carriages.-In antifriction mountings comprising antifriction members running in channelled raceways on the carriage and a stationary support, one raceway being adapted to yield laterally, the yielding raceway is pivotally mounted, or is divided into longitudinal sections which can yield independently. The constructions described below are suitable for folding machines, and consist of sbeet-metal stampings. In the construction shown in Figs. 3, 4, and 6, the raceways consist of rigid flanges d on the baseplate a of the carriage, a rigid flange g on the front of the stationary bed-plate f, and a yielding flange g which consists of two longitudinal sections pivoted at the rear of the bed-plate in the following manner. Each section is formed with two hooks o<1> which are passed through a notch p and a slot q respectively, and bear on the bottom of the bed-plate. Longitudinal movement is prevented by a plate r having fingers t abutting on the middle hooks. The sections are urged outwards by independent blade springs j, Fig. 4. To prevent the carriage from being detached by a lateral pull or push, stops, such as screws n or struck-up lugs, are provided for limiting the lateral movement of the sections. The bed-plate is formed with a rear stiffening flame u. Each pair of raceways receives two balls i which engage eyes in a separator l consisting of a narrow strip formed at the ends with lugs i<2> for preventing the separator from tilting. The movement of the balls is limited by stop-screws m. The stop-screws and separator confine each of the rear balls to one of the sections g. The edges of the rigid flanges g, d are arranged near the base-plate a and bed-plate f respectively and form abutments for the carriage if excessive pressure, such as may occur when the machine is folded, is applied. The yielding flange may be mounted on the carriage base-plate.
Patent GB-378832-A (GB)
Title: Process for refining sugar, or substances containing same, such as beet pulp, beet slices, crushed sugar cane and the like
IPC: C13B20/12
Filed: 1932-04-14
Abstract: Aluminium hydroxide gels of good adsorbent properties and displaying isotropic properties in polarized light are produced by immersing two electrodes of pure aluminium in a solution containing not more than about 1 per cent of a salt such as sodium or ammonium chloride and electrolysing with a current of 0,1-1 amp. per sq. dcm., with adequate stirring.  The gels can be produced chemically by making a dilute aluminate solution from bauxite and precipitating by dilute solutions of acids.  A temperature above 75 DEG  should not be used unless carbon dioxide is introduced during precipitation.ALSO:Sugar or substances containing sugar, such as beet pulp, beet slices, crushed sugar cane, raw juices and molasses are refined by treating them in the presence of a lyophobic adsorbent such as active carbon with aluminium hydroxide gels of good adsorbent properties and displaying isotropic properties in polarized light.  The gels can be produced electrolytically by immersing two electrodes of pure aluminium in a solution containing not more than about 1 per cent of a salt such as sodium or ammonium chloride and electrolyzing with a current of 0,1-1 amp. per square dcm., with adequate stirring.  The gels can also be produced chemically by making a dilute aluminate solution from bauxite and precipitating by dilute solutions of acids. A temperature above 75 DEG  should not be used unless carbon dioxide is introduced during precipitation.  Substances such as supercel and hyflocel obtained by treating kieselguhr with acid may be used along with the active carbon and gel.  Examples are given of the purification of sugar juices and the removal of caramel from solutions.
Patent GB-618057-A (GB)
Title: Improvements in or relating to devices for emptying silo chambers
IPC: B65D88/28
Filed: 1946-04-08
Abstract: 618,057. Silos. BUHLER BROS. April 8, 1946, No. 10783. Convention date, April 6, 1945. [Class 20(i)] A silo chamber is provided with a plurality of outlets 2 having ducts 3 leading to a common outlet 4 and the lower ends of which are symmetrically d i s - posed with regard to the common outlet in order to ensure a uniform flow of the grain &c. The outlet 4 has a closure 7.
Patent GB-513342-A (GB)
Title: Improvements in or relating to thin wall tubes and methods of and apparatus for forming the same
IPC: B21D15/02
Filed: 1938-04-08
Abstract: 513,342. Making radiator &c. tubes. STEVENS, A. H. (Winchester Repeating Arms Co.). April 8, 1938, No. 10814. [Classes 83 (ii) and 83 (iv)] Angular bending, drawing, stamping.-In making tubes of polygonal section tubes for heatexchangers, a copper tube of circular cross section is passed through rollers which shape it to uniform polygonal section without altering the wall thickness. The ends are then expanded by polygonal plugs and intermediate polygonal expansions are made by expanding an internal india rubber plug. The tubes are carried from a hopper by a grooved drum 12 rotated from a shaft 30 by ratchet mechanism 40 and are ejected by a rod 42 actuated by a cam 47 and spring 48. Rolls 56 fed the tubes to polygonally grooved rolls 70 geared to the rolls 56. The polygonal tubes are held in split dies 101 and the ends are expanded by polygonal plugs 105 co-operating with end pieces 108 of similar shape. The socket-ended tubes are then inserted in split dies 116 with recesses 120. A rubber plug 123 is positioned by a rod 124 moved by a hand lever opposite one of the recesses and the plug is expanded by a rod 128 to effect the bulging.
Patent GB-308490-A (GB)
Title: Improvements in cases, folders, plan folders, and files for documents and the like
IPC: B42F7/02
Filed: 1928-04-12
Abstract: 308,490. Stolzenberg Patent File Co., Ltd., and Kayser, T. B. April 12, 1928. Wrappers.-A case or wrapper for documents and the like comprising two flexibly-connected covers 10, 11 or a backboard having flaps at its edges, has a number of fastening devices spaced at intervals along the flaps or covers, each fastening consisting of a flexible cord 19 with an obstruction 20 at one end, the free end of which is passed through eyelets 17 in one cover 11 and secured to a, double washer or rivet-like device 18 on the other cover 10. An eyelet hole 21 may be provided on the cover 10 adjacent to each device 18, through which the cord is passed before being secured. Specification 18246/14 is referred to.
Patent GB-629692-A (GB)
Title: Improvements in and relating to air heating stoves
IPC: F24B7/04
Filed: 1947-04-23
Abstract: 629,692. Air - heating stoves. NIERMEYER, K. A. April 23, 1947, No. 10853. Convention date, Nov. 22, 1939. [Class 64(i)] An air-heating stove burning solid fuel is surrounded at the sides., back and top by a box for circulating the gases of combustion, an air channel being provided between the box and the stove. The stove has a fuel reservoir 1, closed by a flap 2, above a fire-box 3 with a grate 5 below which is an ash-tray 7. The upper part of the stove body 12 is surrounded by a combustion gas circulation box 13 connected through openings 14 to the combustion chamber and supported on projections 23. Air rising along the stove body 12 passes into an air channel between the box 13 and the body 12 as indicated by the arrows a. The fuel reservoir 1 is surrounded by a jacket 8 into which air is admitted through a nozzle-like aperture 9. Air passes from the jacket through slots 10 into a chamber 11 where it mixes with the air entering from the air channel. At the top of the chamber 11 is provided for cooking purposes a grid 15 over which is an apertured cover 16. Air for combustion enters at the bottom 22 of the stove through slots 17 regulated by a slide valve 18. The ashtray 7 is supported on a member 20 leaving airpassages 21. The stove body may have vertical fins, (not shown), to increase the heat transfer to the circulating air. The combustion gas circulation box may be provided with a baffle.
Patent GB-778975-A (GB)
Title: Improvements in rotary pumps or compressors
IPC: F04C15/00
Filed: 1955-04-15
Abstract: 778,975. Rotary pumps or compressors. MEGATOR PUMPS & COMPRESSORS, Ltd., and McCOMBIE, F. W. April 11, 1956 [April 15, 1955], No. 10936/55. Addition to 716,342. Class 110 (2). A pump of the type described in the parent Specification is provided with a sleeve 1, which retains shaft-sealing means 17 in position, the sleeve being removable when a hub 7 is removed, to allow the rotatable parts of the means 17 to be slidden outwardly along and over the end of the shaft 9 through the hollow interior of the pump casing extension. When a nut 20, hub 7 and sleeve 1 have been removed, an extractor tool can be inserted in holes 21, in a withdrawal plate 18, to permit the plate 18 and the moving parts of the seal 17 to be slidden off the projecting end of the shaft 9. The plate 18 is supported on splines or webs 22, which form guide-ways, the plate also supporting the end of the shaft. The fluid contained in the pump casing has direct access to the sealing means, which it cools. A driving pulley 13, for the pump, is secured to end plates 11, 12. Specifications 592,432, 617,750, 622,792 and 639,017 are referred to.
Patent GB-1450157-A (GB)
Title: Dental powder cement and filling material
IPC: C09K3/00
Filed: 1973-03-06
Abstract: 1450157 Dental materials COLGATEPALMOLIVE CO 4 March 1974 [6 March 1973] 10938/73 Headings C3N and C3P A powder component for a dental cement or filling material comprises zinc oxide; a fluorinecontaining compound which dissolves, dissociates or decomposes to yield fluorine ions; and a calcium orthophosphate material selected from (1) various forms of fluoroapatite, (2) hydroxyapatite having various anions incorporated therein, (3) fluorohydroxyapatite which may have some of its calcium ions replaced by other divalent cations, (4) fluoroapatite or hydroxyapatite having some of its calcium ions replaced by other divalent cations, and (5) anhydrous or dihydrated dicalcium orthophosphate having some of its calcium ions replaced by other divalent cations. The fluorinecontaining compound may be an alkali metal or ammonium fluoride, stannous fluoride, zinc fluoride, a fluoride salt of an organic base, a water-soluble mono- or di-fluorophosphate (e.g. of sodium or ammonium) a water-insoluble mono- or di-fluorophosphate (e.g. of calcium) or a mixture of such compounds (e.g. a mixture of sodium fluoride and sodium monofluorophosphate). In application the powder can be mixed with an aqueous solution of orthophosphoric acid and/or polyacrylic acid to form a paste. A dye may be included to adjust the colour of the material.
Patent GB-555967-A (GB)
Title: Improvements relating to the manufacture of tablets or pellets
IPC: B30B15/30
Filed: 1942-07-16
Abstract: 555,967. Hopper-and-plunger moulding- machines. SUMNER, W. July 16, 1942, No. 10961/41. [Class 87 (ii)] A rotating feeding element 13 pushes granular material a (e.g. poultry food or firelighter material) from a hopper 10 through a slot 8 into a tube 7 where a ram 6 consolidates the material into tablets or pellets. The lower end of the tube is open but is slotted at 16 and contracted by a screw shaft 19 engaging a collar 17, whereby the moulding pressure may be adjusted. The tablets fall into a shoot 15. The amount of material delivered to the tube may be regulated by a vertically-adjustable curved plate 20 which masks the slot 8 in the tube. As the tablets emerge from the lower end of the tube they may be cut or broken off by a reciprocating knife.
Patent GB-662881-A (GB)
Title: An improved mop wringer
IPC: A47L13/60
Filed: 1949-04-26
Abstract: 662,881. Mop wringers. TOZER, F. R. April 26, 1949, No. 10990/49. Class 19 A mop wringer comprises a substantially rectangular frame member having provision for the application of foot pressure at its lower end when the wringer is in position in relation to a bucket, an extension on upper part of such frame member adapted to be held by the hand to stabilise the mop wringer when the foot pressure is being applied, a horizontal wringing roller supported between the uprights of the frame, a bracket relatively slidable vertically between the upright members of the frame and adapted to rest on the rim of a bucket and a horizontal roller supported by an parallel to the said bracket. In the Figure, a rectangular frame member 10 has an extension 11 at its lower end for the application of foot pressure; an extension 12 of the frame terminates in a handle which is grasped during the wringing operation. Supported in the frame so as to be capable of rotating is a horizontal wringer roller 13. A bracket 14 supporting another horizontal wringer roller 15 so that the two wringer rollers are parallel, has lugs 16 and. 17 having oval holes or .slots through which opposite side members of the frame pass and is slidable in the frame. The lugs 16 and 17 rest on the rim of the bucket 18, the mop is inserted between the rollers, foot pressure is applied to extension 11 whilst the handle is grasped and the mop is then pulled through the rollers.
Patent GB-610933-A (GB)
Title: Improvements in or relating to glass objects into which electric supply conductors are sealed
IPC: H01J5/32
Filed: 1946-04-10
Abstract: 610,933. Metal-to-glass seals. PHILIPS LAMPS, Ltd. April 10, 1946, No. 11002. Convention date, Sept. 11, 1941. [Class 36] Tungsten or molybdenum lead-in conductors 1, 2 are sealed into the glass stem 5 of a lamp, discharge-tube or the like, by means of glass beads 3, 4 which are wholly or partially embedded in the stem so that one or both ends A, B C, D of the conductors emerging from the beads is, or are, also sealed to the material of the stem itself so as to avoid damage in use through weakening of the metal adjacent the beads. Specifications 531,688 and 531,823 are referred to.
Patent GB-848807-A (GB)
Title: Improvements in and relating to drying devices for rotary-printing machines
IPC: B41F23/04
Filed: 1958-04-08
Abstract: 848,807. Gas burners. ANTOGEN ENDRESS A. G. April 8, 1958 [April 24, 1957], No. 11012/58. Class 75(1). [Also in Groups XIII, XVI and XXXV] A gas burner comprises two coaxial pipes 84, 85 and an injector 86 feeding a mixture of gas and air to the inner pipe 85.