baber/WOPTO huggingface dataset:
Patent GB-1004440-A (GB)
Title: Improvements in or relating to solvent recovery apparatus
Inventor: FOXCROFT JOHN RONALD
Filed: 1963-05-31
Abstract: 1,004,440. Solvent recovery. CROFTSHAW (ENGINEERS) Ltd. May 29, 1964 [May 31, 1963], No. 21987/63. Heading B1B. Solvent is recovered from solvent-impregnated solid materal, e.g. filter sludge, by heating it in an open-topped drum 2 which is disposed substantially horizontally within a housing connected to condenser 14. The sealed space between the outer surface of drum 2 and the housing is filled with oil, and is provided with an electrical immersion heater (not shown). The solid to be treated is introduced into drum 2 through inlet 8, the stirring-blades 5 are set in motion, and the heater is switched on. The solvent vapours pass through pipe 12 to the condenser, from which the condensed solvent is withdrawn. When all the solvent has been evaporated, the dry dust is discharged from drum 2 by tilting the apparatus, and opening valve 21. The dust is discharged to outlet 20 under the action of stirrer blades 5. Reference is made to the recovery of tetrachloroethylene, which has been used in dry-cleaning, from diatomaceous earth filter aid.
Patent GB-1272974-A (GB)
Title: 02-SUBSTITUTED-11,12-DIHYDRO-6H-DIBENZ [b,f][1,4] OXAZOCINES
IPC: C07D267/22
Filed: 1969-04-30
Abstract: 1,272,974. 12 - Substituted 11,12 - dihydro- 6H -dibenz[b,f][1,4]oxazocines. E. R. SQUIBB & SONS Inc. 30 April, 1969 [17 May, 1968], No. 21993/69. Heading C2C. Novel compounds I (including acid addition salts thereof) wherein R 1  is H or halogen, R 2  is H, halogen, trihalomethyl, alkoxy, trihalomethoxy, trihalomethylmercapto, alkyl, alkanoyl or N,N- dialkylsulphamoyl, R 3  and R 4  are H, alkyl, alkoxy, omega hydroxy-alkyl or together with the attached N comprise a 5-, 6- or 7- membered heterocycle which may be substituted to give a substituted heterocycle of less than 21 atoms excluding hydrogen and n is 1, 2, 3 or 4, are made: (a) by treating a compound II (prepared by alkylation of the corresponding 12-unsubstituted compound) with sodium borohydride in methanol or with lithium aluminium hydride in an aprotic solvent; (b) by treating a compound III (prepared by cyclization of the corresponding amino-carboxylic acid) with sodium borohydride or lithium aluminium hydride to afford a compound IV which is subsequently reacted with an alkali or alkaline earth metal hydride or metal-alkyl in an aprotic solvent and then either with an aminoalkyl halide to afford I or with a haloalkylene halide to afford a compound VI wherein X is Cl or Br and m is 2, 3 or 4 which is then treated with ammonia or an appropriate amine to afford I; (c) by reacting a compound VII {prepared by interaction of IV and a haloacyl halide of formula X(CH 2 ) r COX where r is 1, 2 or 3} with ammonia or an amine to afford a compound VIII which in turn is reacted with sodium borohydride or lithium aluminium hydride to afford I wherein lower alkylene is -(CH 2 ) m -; (d) a compound VII is first reduced to a compound VI which is thereafter reacted with ammonia or an amine; or (e) by the interaction of a compound IV with an acyl halide, (R 3 ) 2 N(CH 2 ),COX to afford VIII which is reduced as in (C). o - (o - Aminophenoxy - methyl) - benzoic acid is obtained by hydrogenating the corresponding nitro compound which in turn is derived from the corresponding methyl ester utilizing hydrolysis ; the ester is obtained by the interaction of sodium o-nitrophenolate and methyl 2-chloromethylbenzoate. Pharmaceutical preparations useful as an antihistamine, e.g. for alleviating allergies and for suppressing auricular and ventricular arrhythmias contain I as active ingredient; administration is orally or parenterally.
Patent GB-1530113-A (GB)
Title: Matrix memory including an array of alterable threshold semiconductor storage elements
IPC: G11C16/04
Filed: 1977-05-25
Abstract: 1530113 Variable threshold FET memory NCR CORP 25 May 1977 [18 June 1976] 22040/77 Heading H3T  In an FET memory only the gate and source of each FET are provided or used, data being stored by the gate-source capacitance which may be made to assume one of two values by adjusting the FET threshold voltage. To alter the threshold voltage in the WRITE mode, a cell is selected by 12, 16 and an appropriate voltage applied between 38 and 46. To read stored data, a voltage is applied to the gate line 42 and the source voltage is compared with that of a reference cell in a reference column 14 whose capacitance is intermediate that corresponding to the logic 0 and logic 1 levels of the memory cells, using sense amplifier 30. Alternatively each column may have its own sense amplifier.
Patent GB-519419-A (GB)
Title: Improvements in and relating to multi-layer colour photographic processes
IPC: G03C7/30
Filed: 1938-07-25
Abstract: 519,419. Colour photography. KODAK, Ltd. (Eastman Kodak Co.) .July 25, 1938, No. 22043. Addition to 507,841. [Class 98 (ii)] In a modification of the process of the parent Specification the positive images in both outer layers are exposed and colour developed before that in the middle layer and the layer furthest from the support is after the first negative development, selectively sensitized to light of a colour which will not affect the middle layer, for example to which the other outer layer had been originally sensitized. The exposed film may be developed to a negative, washed, exposed to the back to red light and developed blue-green, washed,'the top layer red sensitized by a glycerol solution of the sensitizing dye, exposed from the front to red light and developed yellow, washed, exposed from both sides to white light, developed magenta, washed, the silver removed, and finally washed and dried. The shadow effect produced by selective reexposure may be used to produce colour compensation. The negative silver, images may be removed before selective exposure. The' processing solutions, including the developer, may contain a soluble perchlorate such as sodium or potassium perchlorate, to retard wandering of the colour-sensitizers. The developer may contain sodium formaldehyde sulphoxylate instead of sodium sulphate. -The wash water should have a low magnesium and calcium content. Sensitivity lost due to treatment with p-phenylenediamine developers may be restored by treatment with a-naphthylamine, added to the developer or used in separate solution. A developer for a silver chloride layer contains developer agent, sodium formaldehyde sulphoxylate, triethanolamine and sodium perchlorate. Sodium hydroxide and colour couplers may be added. Multilayer material having three silver chloride layers sensitized to red, green and blue with or without clear gelatin intermediate layers may be used. Re-exposure may be made with light deprived of violet and ultra-violet light by a filter. The material may be processed to give false colour records. Specifications 440,032, 462,140, 475,784, 475,786, 500,716, 501,000, 501,001 and 501,002 are referred to. The Provisional Specification describes also a method of processing exposed material with three layers sensitized to red, green, and blue respectively in which after the first development the residual images are in order exposed to red light and developed blue-green, exposed to green light and developed magenta, and exposed to white light and developed yellow, and the silver is removed.
Patent GB-642745-A (GB)
Title: An improved metal vapour electric discharge device
IPC: H01J13/02
Filed: 1947-08-08
Abstract: 642,745. Metal vapour converters. ALLIS CHALMERS MANUFACTURING CO. Aug. 8, 1947, No. 22046. Convention date, Oct. 24, 1942. [Class 39 (i)] A metal vapour electric discharge device comprises a casing having metallic parts all in conductive relation thereto, an anode disposed in the casing but insulated from it, and means for preventing arcing between the anode and all the metallic parts of the container comprising a member, pervious to the flow of material vaporized from the cathode pool but impervious to arcing, supported in the casing in insulated and arc-impervious relation to the anode and cathode. The member may comprise a watercooled coil 35 made up of two identical coils, the turns 36, 39 of which are interleaved. Adjacent turns of the coils have a slight gap between them pervious to the flow of mercury vapour but impervious to arcing. Arcing between the coils and the anode is prevented by means of shield 49, and between the coils and the cathode by shield 51 which also serves to collect condensed mercury and return it to the cathode pool. Shield 51 is connected to the coils by leaf-springs 54. The water circulating in the coils is fed through header 72 underneath the cathode and used to cool it, circulating through the arrangement shown in Fig. 2. The anode is cooled by fins 25. A baffle 59 is provided between the anode and cathode and supports a further lenticular baffling device comprising a pair of disc-shaped graphite baffles 61, 62. Baffles 61 and 62 form heat shields and also co-operate with baffle 59 to define a sinuous path for the arc and to deflect mercury away from grid 29 towards coil 35. Baffles 61 and 62 are joined along their edges but may have a space between them which may be filled with heat insulating material 45. Baffle 62 may support a starting anode 64 through an insulated bushing 65. For starting, a jet of mercury may be projected against anode 64 by means of a nozzle-shaped piston 67 of magnetic material actuated by solenoid 69. Non-condensable gases may be removed from casing through outlet 79 which is located near coil 35 so that the density of mercury vapour is low and the removed gases are substantially free of mercury vapour. The Specification as open to inspection under Sect. 91 describes an additional Fig. 3 (Cancelled, not shown), wherein the coil 35 is outside the casing. The baffles 61, 62 are supported from the deionizing grid 1, the supports being shielded to prevent deposition of conductive material on them. This subject-matter does not appear in the Specification as accepted.
Patent GB-312856-A (GB)
Title: Improvements in or relating to clothes pins
IPC: D06F55/00
Filed: 1928-07-30
Abstract: 312,856. Bower, S. July 30, 1928. Clothes pegs are reinforced to prevent splitting by wire &c, wound on the peg near the end of the usual slot 5. One end 7 of the wire is bent at an angle and inserted in the slot, the wire is then wound on the peg, and the other end is forced into the slot to form a U-portion 13 the limbs of which bear against the sides of the slot. At the points 10, 19 the wire forms, and beds in, a slight depression in the wood of the peg and 'retains the wire against longitudinal displace. ment. U.S.A. Specification 1,592,334 is referred to.
Patent GB-282610-A (GB)
Title: Improvements in or relating to electrically controlled valve actuating mechanism
IPC: F23N5/12
Filed: 1927-08-22
Abstract: 282,610. Westinghouse Electric & Manufacturing Co., (Assignees of Knowles, D. D.). Aug. 22, 1927. Electrically-actuated valves. - A safety valve device particularly adapted for use in connection with the fuel supply to furnaces and ovens, the supply of cooling water to distilling apparatus, condensers, and refrigerating machines, or the supply of lubricating oil has a valve for controlling the supply of fluid governed directly or indirectly by the discharge current flowing through an electrical discharge device having a control electrode the potential of which is determined by the flow or otherwise of the fluid through a conduit. The Figure shows the device applied to the control of the fuel supply to a furnace 1. The valve 37 controlling the supply to the burners 3 is opened by a hand lever 44 acting through a rack 38 and pinion 36 and is held in the open position against the action of a spring 46 by an electromagnet 52. The magnet is supplied with current from a source 54 under the control of a sensitive relay 34, the coils of which are in the plate circuit of a thermionic valve 30. The valve filament 31 is heated by a battery 68, and the plate potential is supplied by a battery 35 while negative bias is applied to the grid 32 by a battery, 60 connected through a resistance 61. A positive biassing battery 67 is connected to the grid circuit through a wire 67<1> connected to the pipe 66 supplying the pilot jet and through a wire 62 passed through an insulating bush 63 having a very high surface resistivity and provided with a part of non-oxidizing alloy such as is sold under the registered Trade Mark Nichrome adapted to enter the flame of the pilot jet. The slight amount of ionization caused by the flame acts as a grid leak and so presents the accumulation of a negative blocking charge on the grid. So that while the jet is burning a current passes through the relay 34 holding it closed against the action of a spring 55, and so energizes the electromagnet 52. In the event of the flame being extinguished the magnet, circuit is opened, allowing the spring 46 to close the valve and a locking catch 47 to take over a projecting member 49. The locking catch is released when the magnet is again energized. A modification is described using a glow discharge tube fed with alternating current from a transformer. The grid may be controlled by the variation in capacity between two members arranged in the fluid conduit.
Patent GB-1111284-A (GB)
Title: A combined sealing and trimming strip
Inventor: FISCHER HEINRICH
IPC: B60J10/80
Filed: 1965-05-25
Abstract: 1,111,284. Combined sealing and trim strip. DRAFTEX G.m.b.H. 22 July, 1966 [25 May, 1965], No. 22121/65. Heading E1J. A combined sealing and trimming strip 5, 6 of substantially inverted U shape (Fig. 1) to straddle a flange comprises a metal clip, covered by synthetic resin, having tongues 4 to form a channel to grip a bead 9 on a rubber sealing section 8 by bending the channel sides inward. In one form the strip 5, 6 has a flexible lip 7 (Fig. 1). In another combined strip the section 8 is leaf-shaped and attached near the top of the strip 5, 6. In further modifications the tongues 4 are centrally positioned as in Figs. 6 and a section 8 which is solid is used or a small diameter tubular one.
Patent GB-520926-A (GB)
Title: Improvements relating to reflecting galvanometers
IPC: G01R13/38
Filed: 1938-08-29
Abstract: 520,926. Galvanometers; optical indicating- devices. ELLIS, F. C. Aug. 29, 1938, No. 22190/39. Divided out of 518,728, [Group XXXVI]. [Class 106 (iv)] [Also in Group XXXVI] In a suspension-type moving-coil galvanometer the path of light from the galvanometer lamp 35 to the coil mirror 24 includes an additional reflector 23 set obliquely to and movable about the axis of the collimating tube 18, whereby the luminous index can be raised or lowered with respect to the scale 25.
Patent GB-1390960-A (GB)
Title: Process for obtaining a high contrast photographic image
IPC: G03C5/305
Filed: 1972-05-11
Abstract: 1390960 Developing silver halide emulsions KONISHIROKU PHOTO INDUSTRY CO Ltd 11 May 1972 [12 May 1971] 22204/72 Heading G2C A process for obtaining a high contrast image comprises developing, after imagewise exposure to light, a silver halide photographic material having a silver chloride content of less than 30 mole % in the silver halide layer, in an alkaline developer containing hydroquinone as the sole developing agent, a formaldehyde bisulphite and a thiocyanate compound capable of liberating thiocyanate ions and not more than 0.004 mole of KBr per litre of developer. The thiocyanate compound is preferably a thiocyanate of K, Na, Ca, Mg, Ni, Cr or ammonium and is added in an amount of not more than 0.2 mole/litre. The developer solution may also contain sulphite ions.
Patent GB-428175-A (GB)
Title: Improvements in or relating to electrical heating bars and methods of producing the same
IPC: H05B3/48
Filed: 1934-07-30
Abstract: 428,175. Wire resistances. HOFER, H., 131, Bachstrasse, Aarau, Switzerland. July 30, 1934, No. 22228. [Class 37] A flexible heating-element is produced by inserting a resistance conductor between moulded ceramic insulators, inserting the member so formed in a sheet metal shell, and then subjecting the whole to pressure to crush the insulators and shape the element. The resistance conductor H is a wire bent to zig-zag form, a thin band, or a zig-zag stamping. The insulators I are of aluminium oxide and are formed in halves in one of the ways shown. The shell R, Figs. 19, 24, is a seamless tube or is formed by closing a channel section and packing strip. The cross section of the element in its final form may be circular, kidney-shaped, or as shown in Fig. 24. Its axis may be of sinuous or hairpin form. Reference has been directed by the Comptroller to U.S.A. Specification 1,913,355.
Patent GB-995154-A (GB)
Title: Magnetic memory system
IPC: G11C11/06
Filed: 1962-06-08
Abstract: 995,154. Magnetic storage apparatus. AMPEX CORPORATION. June 8, 1962 [June 12, 1961], No. 22235/62. Heading H3B. Binary information is stored in the area by four holes in a piece of magnetic material by passing currents through conductors from one hole to the diagonally opposite one. As shown, four holes 11A, 11B, 11C and 11D in a ferrite plate define a storage area 11, conductor 50 is a write " zero " conductor, conductor 51 is a half-write " one " conductor and conductor 91 is a half-write " one " and sense conductor. A " one " is stored when the flux is in the direction of arrow 114 and a " zero " when the flux is in the direction of arrow 112. A single magnetic plate may be used to form many storage areas in a matrix array (Fig. 1, not shown). Printed circuit wiring may be used and instead of writing by two half currents a full write current and inhibiting currents may be used.
Patent GB-756441-A (GB)
Title: New dyestuffs of the anthraquinone series
Inventor: BELSHAW PHILIP LEIGH
IPC: C09B1/514
Filed: 1953-08-14
Abstract: The invention comprises dyes of the formula:-<FORM:0756441/IV(c)/1> where X and Y are H, OH, or NO2, Z is -CH2-, -O-CH2-, -CH2-CH2-, or -CH=CH-, and R is alkylene.  They are made by heating a glycol with an alkyl ester of the formula:- <FORM:0756441/IV(c)/2> where R1 is alkyl of 1-2 carbon atoms.  Excess glycol may be used as solvent and mixtures of alkyl esters and/or glycols may be used.  An ester-interchange catalyst, e.g. p-toluene sulphonic acid, may be used.  The starting materials are made by condensing a 1-hydroxy-4-nitroanthraquinone with an amine of the formula NH2-C6 H4-Z-COOR1.  The products dye acetate rayon or polyester fibres.  In examples, (1) the 1.8-dihydroxy-4-nitro-5-anilino-anthraquinone having in the anilino radical a p-carboethoxymethyl or a p - b  - carbomethoxyethyl substituent is heated with propylene glycol, (2) those having a p-carbethoxymethoxy a m-carbethoxymethyl, or a b -m-carbethoxyvinyl substituent are each heated with a mixture of propylene and ethylene glycols, and (3) a mixture of 1.8-dihydroxy-4-nitro-5-p-carbomethoxymethyl-anilinoanthraquin one and 1.5-dihydroxy-4-nitro-8-p-carbomethoxymethyl-anilino -anthraquinone is heated with a mixture of propylene and ethylene glycols.
Patent GB-666810-A (GB)
Title: Improvements relating to temperature-measuring devices
Inventor: SCOLES GRAHAM JOHN
IPC: G01J5/28
Filed: 1949-08-30
Abstract: 666,810. Photo-electric pyrometers. METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. June 1, 1950 [Aug. 30, 1949], No. 22532/49. Drawings to Specification. Class 40 (iii). A pyrometer comprises an A.C. fed photocell sensitive to infra-red and receiving heat from a surface through an optical system which directs heat rays on to the cell. The cathode may be of the silver-oxygen-cµsium type. The cell and optical system may be housed in a portable unit, the amplifier and photo-cell being located away from the high temperature. The Provisional Specification mentions that the photo-cell, optical arrangement and amplifier may constitute a single unit.
Patent GB-1513093-A (GB)
Title: Rapidly connectable and disconnectable pipe union
IPC: F16L37/00
Filed: 1976-06-01
Abstract: 1513093 Pipe couplings COMPAGNIE MARITIME D'EXPERTISES-COMEX 1 June 1976 [30 May 1975] 22626/76 Heading F2G A disconnectable pipe union for connection of pipes 3, 5 comprises a bush 2 welded to the end of the pipe 3, the bush having an end flange 6 which is of castellated form to provide alternate radial flange parts with gaps therebetween, and a union body 4 welded to the pipe 5, the body 4 being screw threaded externally to receive a nut 8 which carries rotatably mounted therein a bush 9 with an inwardly radially projecting toothed rib 13, the arrangement being such that starting from the position shown in the top half of Figure 1, the nut 8 may be advanced along the body 4 with the projecting teeth of the rib passing through the gaps in the flange 6 and after passage therethrough the bush 9 can be rotated to engage the teeth behind the parts of the flange, whereupon rotation of the nut 8 will draw the confronting faces 14, 15 of the union into sealing contact as shown in the lower half of Figure 1. The radial parts of the flange 6 and the teeth of the rib 13 have interengaging formations 19, 20 to aid in their mutual engagement and the bush 9 is rotatably mounted on the nut 8 by means of a ring 11 engaging a stop ring 12 screwed into the end of the bush 9. For smaller sizes the nut may be formed for rotation by a spanner but for larger sizes, teeth 21 may be provided for engagement by a driving rack or worm. Seals 16 are provided in the face 15 of the body 4 and if desired the bush 2 and body 4 may allow for simultaneous connection of more than one pair of aligned pipes 3, 5 by provision of the appropriate number of passageways therethrough.
Patent GB-1171405-A (GB)
Title: Fastener Device for Securing Apertured Members to one another
Inventor: PARKIN LESLIE
IPC: F16B21/02
Filed: 1967-05-16
Abstract: 1,171,405. Stud and socket fasteners. CARR FASTENER CO. Ltd. 19 March, 1968 [16 May, 1967], No. 22683/67. Heading E2B. A device for detachably securing two apertured members a b to one another comprises a cylindrical housing 1 having a wall closing one end and an interned flange at the opposite end, a plunger 4 mountedin the housing 1 for sliding and rotational movement, and having one end projecting from the one end of the housing and being slidable against a spring 8 outwardly of the housing, a collar being provided on the opposite end of the plunger, the projecting end 5 of the plunger having laterally projecting means 6 thereon, wherein, when the plunger is inserted through aligned apertures 12 in the members to position one end 2 of the housing in abutment with one of the members and to position the projecting means 6 at the outer face of the other member, the plunger is rotatable to position the projecting means 6 in overlapping abutting relation to portions of the second member b adjacent the aperture 12 therein.
Patent GB-317632-A (GB)
Title: Advertising apparatus
IPC: G09F11/34
Filed: 1928-08-07
Abstract: 317,632. Etoe, R. E. M. Aug. 7, 1928. Addition to 304,746. Transparencies, travelling, illumination, changing advertisements by controlling; optical-projection apparatus, applications of.-The advertising apparatus described in the parent Specification is modified to comprise a spring pusher for assisting gravity in returning the transparencies to the magazine, a switch for lighting the projector lamp alternately with lamps arranged at the sides of the screen, and a switch for selecting different sets of the screen lamps so that the screen may be flanked by different colours in sequence after each transparency display. The pusher a consists of a non-rotatable spring-pressed rod carrying a, shutter c. The rising transparency P bears against the foot c<1> to compress a spring which forces the transparency down again when the plunger b falls. Brushes j connected to the projector lamp and brushes j<1> leading to the screen lamps h sweep in turn over contacts d mounted on the shaft f. The selector switch comprises contact plates each connected to one set of the lamps h and touched in turn bv a brush on a spindle rotated intermittently by the engagement of radial arms k thereon by a pin o on the shaft f. A mirror s deflects the beam from the projector g on to the screen i.