baber/WOPTO huggingface dataset:
Patent GB-226306-A (GB)
Title: Improvements relating to vacuum electric tube devices
IPC: H01J1/13
Filed: 1923-10-08
Abstract: 226,306. Robinson, E. Y., Brown, W. J., and Metropolitan-Vickers Electrical Co., Ltd. Oct. 8, 1923. Thermionic valve circuits.-In order to replace a faulty main cathode with minimum interruption of the operation of the system, an auxiliary cathode in the neighbourhood of, but below, its normal operating temperature, is included in the system and its temperature is raised to the normal operating temperature on the failure of the main cathode. In the system shown in Fig. 1, a main valve 1 and an auxiliary valve 2 are utilized, and an automatic switch 3 is provided for changing the grid and anode circuits from one valve to the other in the case of the breakdown of the main cathode. The main cathode 6 is connected across the supply leads 4, 5 through the operating coil 7 of the automatic switch, and the auxiliary cathode 8 is also connected across the supply leads through a resistance 9. This resistance is of such a value that the cathode 6 is at its normal operating temperature while the cathode 8 is at the maximum temperature at which the electron emission is negligible. If the cathode 6 burns out, the coil 7 is de-energized and a spring 23 pulls the switch 3 and changes the grid and anode connections from one valve to the other. At the same time, one of the switch arms 14, short circuits the resistance 9 so that the cathode 8 is heated to its working temperature. A warning-device 31 may be operated by the switch to call attention to the change of valves. A system in which the switch is dispensed with is shown in Fig. 2. In this arrangement, the grids and anodes of the two valves are connected in parallel, and a resistance 33 is inserted in series with the cathode 6. Another resistance 34 is placed in series with the cathode 8 and both are connected in parallel with the cathode 6, the value of the resistances being adjusted to keep the cathode 8 below its critical temperature. The cathodes 6, 8 may be in the same valve, instead of in separate valves as shown, and a switch may be included in the circuit in such a way that the valve 1 becomes the auxiliary when it is replaced after a burn out. According to the Provisional Specification, the invention can be applied to other types or cathodes, such as metal tubes or plates which are heated by thermionic bombardment.
Patent GB-1431782-A (GB)
Title: Antihalation layer
IPC: G03C1/825
Filed: 1973-05-25
Abstract: 1431782 Photographic anti-halation layers ILFORD Ltd 12 Oct 1973 [4 Oct 1972 25 May 1973] 45746/72 and 25125/73 Heading G2C An anti-halation layer assembly is formed on a photographic film base by coating on to the film base, which has been treated with a subbing layer or has received a subbing treatment, (i) a coating mixture containing an anti-halation dye and a polymeric binder, e.g. a methyl methacrylatemethacrylic acid copolymer, and drying the layer so formed, (ii) an alkali-metal or ammonium salt of a resin, e.g. of a p-hydroxybenzoic aciddimethylol cresol condensate or of a methyl methacrylate-methacrylic acid copolymer, and drying the layer so formed, and (iii) an organic solvent solution of wax e.g. carnauba wax and drying the layer formed. The layer(ii) prevents migration of dye to the emulsion layer when the film is rolled up and the wax layer (iii) acts as a lubricating layer.
Patent GB-851107-A (GB)
Title: Sectional implement handle
IPC: A47L11/22
Filed: 1959-07-14
Abstract: 851,107. Assembling force fits; jointing. BISSELL A.G. July 14, 1959 [July 21, 1958], No. 24132/59. Class 83 (4). [Also in Groups XXIII and XXVIII] A permanent joint between tubular sections 5, Fig. 3, of a carpet sweeper handle, comprises a dowel 7 fixedly secured and projecting from one end of a section to telescopicallyreceive an adjacent section and carrying a resilient washer 13, Fig. 5, with radial prongs 15 which deflect to permit ready initial assembly and then open to bite into the inner face of each section and prevent subsequent removal. The washer 13 is held by a screw 14 on the end face of the dowel 7 which is bevelled at 12 to permit deflection of the prongs 15. The section 5 and dowel 7 have flats 6, 9 to prevent relative rotation.
Patent GB-886684-A (GB)
Title: Improvements in or relating to heterocyclic compounds and the manufacture thereof
IPC: C07D209/18
Filed: 1958-08-06
Abstract: The invention comprises aminoethyl indoles of the formula <FORM:0886684/IV (b)/1> and acid addition salts thereof, wherein R1 is a C1-4 alkyl radical, R2 and R3 are hydrogen atoms or C1-4 alkyl radicals and R5 is hydroxy, a benzyloxy or benzhydryloxy radical bearing alkyl, alkoxy or halogen substituents and containing up to 15 carbon atoms or a C1-8 alkoxy radical, with the proviso that R2 and R3 cannot both be hydrogen; and comprises also processes for the preparation of compounds of the above type wherein R5 is hydroxyl, benzyloxy or benzyhydryloxy, with or without alkyl, alkoxy or halogen substituents, or an alkoxy group and without the proviso regarding R2 and R3, whereby the corresponding 3-nitro-ethyl indole is reduced and, if a 5-hydroxy-product is desired, a benzyloxy or benzhydryloxy group in the 5-position is removed by hydrogenolysis or a 5-alkoxy group is dealkylated with aluminium chloride.  Hydrogenolysis or reduction by catalytic hydrogenation are effected in the presence of palladium platinum oxide or Raney nickel catalysts.  Reduction of the nitro group may also be effected by reaction with lithium aluminium hydride.  The products are suitably isolated as salts such as the sulphate, acetate and creatinine sulphate.  Examples describe the preparation of 5-hydroxy-, methoxy-, benzyloxy-, p-methylbenzyloxy-, ethoxy-, p-chlorobenzyloxy-, n-butyloxy- and isopropoxy-, 3-aminoethyl indoles in which R2 and R3 may be hydrogen, methyl ethyl, propyl, propyl or butyl and R1 is methyl, ethyl, propyl or butyl.  Intermediates.  The 3-nitro­ethyl-indoles from which the aminoethyl-indoles of the invention are obtained by reduction are prepared by nitroalkylating a 3-dialkylaminomethyl-indole with an alkyl a -nitro-a -alkyl-acetate to produce an alkyl ester of a -alkyl-a -nitro-b -indolyl-(3)-propionic acid (optionally bearing a substituent R3 and in the 1-position and bearing an alkoxy or benzyloxy group in the 5-position), hydrolysing and decarboxylating with an alkali such as sodium hydroxide to give an alkali-metal salt of a 5-substituted-3-b -acinitroethyl-indole and acidifying to give the nitroethyl-indole.  Alternatively, the 5-substituted-3-dialkylaminomethyl indole may be reacted with a nitro-alkane to give the 3-nitroethyl indoles.  The 3-dialkylaminomethyl indoles substituted in the 1- and 5-positions are made by reacting the corresponding indoles with formaldehyde and a dialkylamine, e.g. dimethyl amine.  1-alkyl-5-substituted indoles are made by reacting the 5-substituted indole, e.g. a 5-benzyloxy-indole with an alkyl halide.  The 5-alkoxy and 5-benzyloxy indoles are prepared by methods described in the literature.  Reference has been directed by the Comptroller to Specifications 807,876 and 807,877.
Patent GB-227191-A (GB)
Title: Improvements in and relating to card indexes
IPC: B42F17/18
Filed: 1923-10-10
Abstract: 227,191. Russell, R. C. Oct. 10, 1923. Racks; index cards.- In a card index having index members provided with lateral ears 8 which slide in the guides of a holder, each member comprises a support 7 and a card 5 hinged together by a flexible strip of fabric 6 which contains a slot 10 to receive the projecting tongue 9 of the next member. The strip may be omitted and the support and card cemented together directly.
Patent GB-219215-A (GB)
Title: Mercury arc rectifiers
IPC: H01J5/42
Filed: 1923-10-12
Abstract: 219,215. Marschner, E. Oct. 12, 1923. Leading-in wires.-A leading-in device for a mercury-arc rectifier is formed of sheet metal having the side adjacent to the glass formed of copper and the side exposed to the mercury vapour formed of a layer of mercuryproof metal such as iron or nickel. The two metals may be united by rolling, or one may be electrodeposited on the other. According to the construction shown in Fig. 1, a threaded cap 6 is soldered into a bimetallic leading-in cap 2 into which an inwardly extending glass neck 5 is blown. Previous to blowing, a small protuberance is drawn outwards from the centre of the tube 5, and the part of the glass adjacent to the cap only is softened before blowing. The central protuberance is then punctured and the glass cylinder 5 broken away from the blowing-tube and fused to the body of the glass container 1. The external conductor, consisting of a rod 3 and a bundle of thin wires 4, is then screwed into the cap 6. The electrode 10 is screwed to a metal rod 9, which is soldered to the iron or nickel layer of the cap 2. In an alternative construction, Fig. 3, the bimetallic cap 14 is formed with a narrow neck in the centre of its crown and with an inwardly-projecting annular ridge 15, which is heated to incandescence and pressed against the neck 12 of the glass vessel 11, causing the edge of the neck to melt and unite with the copper. Air is then blown into the neck to complete the seal. The external conductor 13 is soldered into the neck of the cap 14.
Patent GB-442950-A (GB)
Title: Improvements in or relating to the production of polyglycerol esters
IPC: C11C3/06
Filed: 1934-09-04
Abstract: Crude polyglycerol fatty acid esters containing free hydroxy groups are agitated with an aqueous solution of an inorganic acid salt in order to effect separation of the glycerol and polyglycerol present. Two layers result, the upper consisting of the purified ester and the lower, an aqueous salt solution from which glycerol and polyglycerol may be recovered.  A preliminary test is made at 80--100 DEG  C. and using a 20 per cent aqueous solution of the salt, to ascertain whether the separation of the ester from the aqueous salt solution containing the glycerol and polyglycerol is effective.  In an example, a crude ester derived from coconut oil and a polyglycerol is stirred and heated with aqueous sodium sulphate.  The upper layer after separation is subjected to a further washing treatment with aqueous sodium sulphate.  Sulphates of aluminium, magnesium, ammonium, zinc, lithium and potassium and sodium dihydrogenphosphate, sodium metaphosphate, sodium thiosulphate and sodium sulphite may be used satisfactorily.
Patent GB-1260006-A (GB)
Title: Improvements in gas lighters for igniting gas burners
Inventor: WEBB JOHN
IPC: F23Q7/10
Filed: 1969-05-20
Abstract: 1,260,006. Gas lighter. WEBSON (MANCHESTER) Ltd. 14 May, 1970 [20 May, 1969], No. 25557/69. Heading F4F. A gas lighter of the kind having an electric filament 48 for igniting a gas jet and thus a burner comprises a hollow barrel 2 having two cylindrical internal portions 4, 8 in alignment with one another, the first 4 of greater diameter than the second 8, an orifice 42 in communication with the first portion 4 via a passage 40, a spindle 14 slidably disposed in barrel 2, first and second seals 10, 12, e.g. rubber 0-rings mounted on the spindle 14 and movable therewith each making a gas-tight seal with the wall of the portion 8, and an opening 30 in the wall of portion 8 to admit gas between seals 10, 12 from a supply. The seals are spaced by coil-spring 22, washers 18, 20 and clips 24, 24<SP>1</SP>. The lighter head 32, for igniting natural gas, comprises a guard 34, ceramic base 36, aperture tub 38 with outlet orifice 42, bleed duct 44 and filament 48 electrically connected with member 51 and arms 52, and via pin 46 to tube 38, tubing 56 and open ended tube 70 which is insulated from barrel 2 and comprises a plurality of resilient metal tongues spaced by slits 72. The nose 74 of spindle 14 may be pushed into and make electrical contact with the tube 70 and complete a circuit if a battery is connected between arm 52 and strip 76, and thus in this position of the spindle only, gas may flow from the supply, around seal 10, through tube 70 to orifice 42 for ignition by filament 48, which, if town gas is used, may be suspended across or adjacent the orifice. Ignition and gas supply are thus only available in combination and not separately.
Patent GB-871334-A (GB)
Title: A process for the production of artificial threads, bands, films and like products from viscose
IPC: D01F2/10
Filed: 1957-08-14
Abstract: Artificial threads, bands, films and like products are produced by spinning viscose containing 1%-6% by weight, calculated on the cellulose, of at least one cation-active compound of the formula: <FORM:0871334/IV (a)/1> in which R1 represents an alkyl, aryl or alicyclic radical preferably containing at least 6 C-atoms, R2 represents an alkyl radical having 1-3 C-atoms, n is 2-5, x and y are each whole numbers, the sum of x+y preferably being 2-50, and Z represents an anion having substantially no surface activity, e.g. hydroxide, halide, acid sulphate or acetate, into a bath containing a maximum of 7% by weight of sulphuric acid and at least 2% by weight of zinc sulphate, and drawing the spun products.  The source of cellulose for the viscose may be wood pulp or cotton linters or mixtures thereof and the viscose preferably contains 5%-8% of cellulose and 4%-8% of alkali and is preferably xanthated with 25%-50% of CS2.  The cation-active compounds may be added to the viscose at any stage of its preparation, e.g. during the xanthate dissolving step.  The deposition of zinc sulphide in the spinning bath may be prevented by adding to the bath 0,001%-0,5% by weight of a cation-active compound of the same general formula as that added to the viscose, the value for the sum of x+y of the compound added to the bath preferably being less than that of the compound present in the viscose and the amount of the compound added to the bath being preferably 0,02%-0,2% by weight.  The spinning bath, which is preferably maintained at a temperature of 30 DEG -75 DEG C., may also contain sodium sulphate or magnesium sulphate.  The spun products may be drawn in the spinning bath or immediately after they leave the spinning bath, preferably in a second bath containing dilute acid at 50 DEG -100 DEG C.  Specification 654,083 is referred to.
Patent GB-532766-A (GB)
Title: Improvements in or relating to apparatus for purifying steam
IPC: F22B37/32
Filed: 1939-09-13
Abstract: 532,766. Steam purifyers. SUPERHEATER CO., Ltd., and ROBINSON, E. A. Sept. 13, 1939, No. 25727. Drawings to Specification. [Class 55 (ii)] Apparatus comprising rotating discs dipping into a liquid in a vessel through which steam is passed, as described in Specification 532,765, is used for purifying steam.
Patent GB-444795-A (GB)
Title: Improvements in mixing machines or apparatus
IPC: E01C19/10
Filed: 1935-09-17
Abstract: 444,795. Mixing-machines. TARMAC, Ltd., and WATSON, R., Ettingshall Works, Wolverhampton. Sept. 17, 1935, No. 25740. [Class 86] Mixing-machines for road materials comprise a trough in which are mounted rotary stirrers driven from a motor, the shafts of the stirrers being fitted with means for driving supporting wheels for transporting the machine. The machine comprises a frame carried on rail wheels 15 and supporting the mixing trough in which the mixing shafts 7 work, the bearings 38 for the mixing shafts being outside the trough. The shafts are fitted with blades 43, Fig. 4, carried on pairs of arms 42 bolted to a central shaft 41 and fitted with spacers 46, and are driven, by gears 30 thereon, through reduction gearing 27, 26 from a pulley 24 driven from a motor 18. The mixing shafts are fitted with clutches 50, 55 selectively operated from a hand wheel 63 and through which the rail wheels may be driven for transporting the machine. The trough is fitted with a pivoted charging hopper 31 and is discharged through pivoted doors in the base operated by levers 35.
Patent GB-1061623-A (GB)
Title: Sealing ring and method of making same
IPC: B32B27/00
Filed: 1964-06-22
Abstract: A sealing ring comprises a core of vulcanised solid elastomeric material having a Shore durometer test of from 40 to 90 and bearing a coating of polyurethane bonded directly to the working face thereof. "Elastomeric material" is defined as any natural or synthetic elastomer other than a silicone rubber, a fluoro-elastomer or a polyurethane.  The coating may be applied as a solution of a prepolymer in an organic solvent, by spraying or dipping, and may contain an anti-friction additive such as graphite, molybdenum disulphide, PTFE or polychlorotrifluoroethylene in powder form. Curing is by exposure to air which may be of high humidity; an accelerator such as an amine may be included in the coating.  A succession of coats may be applied.
Patent GB-299360-A (GB)
Title: Improvements in or relating to electromagnetic relays
IPC: H01H50/36
Filed: 1928-09-07
Abstract: 299,360. Associated Telephone & Telegraph Co., (Assignees of Erickson, J.). Oct. 24, 1927, [Convention date]. Electromagnets.-An electromagnetic relay has two cores 8 carrying the energizing windings, the cores being clamped in recesses in one limb of a U-shaped magnetic heel-piece 5, the heel-piece being provided with slot's 26 adjacent each core and the pivoted armature 10 being provided with slots 27, 28 extending from its sides to points above the centres of the core in order to prevent eddy-currents flowing in these members. The cores 8 are formed as shown in Fig. 6 by sheets of soft iron formed with folds of increasing length as they reach the centre so that the sheet may be pressed into a circular cross-sectional form, as shown in Fig. 5. The armature 9, as shown in Fig. 4, is secured by screws 19, 32 to a plate 10 of a resilient non-magnetic material, extensions 16, 17 of the plate 10 being screwed to the upper end of the heel-piece 5. The armature is provided with an adjustable retractive spring 20 and when attracted against this spring causes movable contacts carried on an extension 18 of the plate 10 to break contact with the screw 11 and to make contact with the screw 12. To prevent chattering when the relay is energized by alternating current, one of the series-connected energizing windings is paralleled with a condenser to shift the phase of the current therein. The retractive action of the spring 20 on de-energization of the relay is assisted by the elasticity of the tongue 18 which is stressed during the armature attraction. The relay structure as a whole is carried by a U-shaped frame 2 formed of non- magnetic material.
Patent GB-389021-A (GB)
Title: Improved method and apparatus for the production of hollow metal castings
IPC: B22D21/04
Filed: 1932-09-16
Abstract: 389,021. Making lasts or boot-trees. KISTINGER, E., Trier-on-Mosel, Rhineland, Germany. Sept. 16, 1932, No. 25807. Convention date, Sept. 16, 1931. [Classes 83 (i) and 83 (ii).] Casting processes. -In casting lasts or boot-trees of aluminium or other metal by filling a mould and then pouring out the still fluid interior the mould a is provided with a small opening e remote from the funnel b. A pin g is arranged in the opening and is withdrawn by hand or automatically when the mould is inverted. The pin may have a disc n, engaged by a compression spring f, which has a tongue r adapted to engage an annular groove o during pouring but, when the mould is inverted, an arm g<2> strikes a stop i and the pin and disc are rotated so that the tongue enters a longitudinal groove and the pin is extracted. The small hole left in the casting may be closed by welding or by a metal plug.
Patent GB-911513-A (GB)
Title: Improvements in and relating to the impregnating of materials
IPC: D06B5/12
Filed: 1960-07-26
Abstract: Textile treating apparatus comprises a chamber adapted to be pressurized by air; a container for holding a treating liquid inside said chamber to permit pressures inside said chamber to act on said treating liquid, said container being spaced from at least one wall of the chamber to permit a human operator to manipulate material in the container from within the chamber; means for heating liquid within the container to above its atmospheric boiling point; and means for maintaining the air within the chamber conditioned for human consumption (see Group X).  One or more air locks (see Group XXI) may be pro <PICT:0911513/IV (b)/1> <PICT:0911513/IV (b)/2> vided to permit the passage of men and materials into the chamber without depressurization.  A safety device which can be associated with the apparatus discharges cold liquid into the container in response to pressure and temperature measurements, e.g. if the temperature approaches within 5 DEG C. of the boiling point of the treating liquid at the sensed pressure.  Figs. 1 and 2 show diagrammatic plan view and elevation respectively of a textile-treating system, comprising pressure chamber 10, dye vats 13 and 14 within the chamber, and air locks 11 (material) and 12 (personnel) connecting the chamber with auxiliary building B. Platform P provides a working and storage area.  Safety apparatus A comprises reservoirs 15 and 16 which discharge cooling fluid via lines 17 and 18 if safety valves 19 and 20 are actuated.  Valved, V, lines 21, 22 and 23 provide for liquid supply to vats, discharge from vat to internal sump, S, and discharge from sump to external drain respectively.  The valve, V, in line 23 is controlled by the liquid level in sump S.
Patent GB-615319-A (GB)
Title: Improvements in and relating to joint structures
IPC: E03C1/33
Filed: 1945-10-05
Abstract: 615,319. Joints and connections. BRITISH THOMSON-HOUSTON CO., Ltd. Oct. 5, 1945, No. 25939. Convention date, Oct. 9, 1944. [Class 20(ii)] Two adjacent objects having flat horizontal surfaces at approximately the same level are joined by means comprising downwardly projecting elements 4, Fig. 2, in contact with each other and bent upwards as shown at 6 to form a wedge, and a removable member 7, bent at 7a and 7b to a somewhat box-like form, arranged to slide over the downward elements to force them together and provided with projections 8 which engage the elements to force them simultaneously to adjust themselves vertically so as to bring the flat horizontal surfaces of the objects 1 and 2 to the same level. The member 7 is inserted through a side opening which may be covered by a plate 13, Fig. 4, and its engagement with the portions 6 of the downward elements is facilitated by bevelling at their front ends. Notches 12 are provided for the removal of the member 7 by means of a special tool. In the modification in Fig. 6 the joint between the surfaces is covered and they are brought to the same level by the positioning of the cover plate 14, to which an attachment 15 is welded and is bent as shown to form a locking member at 16 having projections 17 which engage a downwardly projecting element from one of the surfaces, the lower end of the element being bent upwards to form a wedge, in the same manner as above.