baber/WOPTO huggingface dataset:
Patent GB-688225-A (GB)
Title: Improvements in or relating to the preparation of derivatives of 1:2:3-trisubstituted pyrazolones
Filed: 1950-09-19
Abstract: The invention comprises 1 : 2 : 3-trisubstituted pyrazolone derivatives of the general formula <FORM:0688225/IV (b)/1> (wherein R represents an alkyl or aryl radical, R1 an alkyl radical, R11 an unsubstituted or substituted aryl radical and -NHR111 the residue of a primary amine), and the manufacture thereof by reacting the correspondingly substituted pyrazolone-4-aldehydes with equimolecular proportions of a primary amine and sodium bisulphite, simultaneously or in either order.  The products are therapeutically useful, having both antipyretic and bacteriostatic properties.  In examples: (1) 1-phenyl-2 : 3 - dimethyl - 5 - pyrazolone - 4 - aldehyde is heated with aniline in the presence of potassium carbonate, and the resulting Schiff's base is reacted with sodium bisulphite in aqueous alcoholic solution; (2) 1 : 3-diphenyl-2-methyl-5-pyrazolone-4-aldehyde is similarly treated; (3) the Schiff's base from 1-p-ethoxyphenyl-2 : 3 - dimethyl - 5 - pyrazolone - 4 - aldehyde and p-ethoxyaniline is reacted with sodium bisulphite as in (1); (4) the p-ethoxyaniline in (3) is replaced by 4-amino-1-phenyl-2 : 3-dimethyl-5-pyrazolone; (5) and (6) the sodium bisulphite compound of 1-phenyl-2 : 3-dimethyl-5-pyrazolone-4-aldehyde is reacted with aniline; (7) 1-phenyl-2 : 3-dimethyl-5-pyrazolone-4-aldehyde is heated with p-aminobenzenesulphonamide and an aqueous solution of sodium bisulphite.
Patent GB-355914-A (GB)
Title: Improvements in, and relating to, forecarriages of trailer wagons
IPC: B62D63/06
Filed: 1930-07-30
Abstract: 355,914. Road vehicle forecarriages. HAYES, H. G. and NICOL, R., Ashton Gate Works, Winterstroke Road, Bristol. July 30, 1930, No. 23033. [Class 108 (ii).] In a trailer forecarriage connected to the frame by a central king-pin and supporting it through a roller or ball-thrust race adapted to allow a limited degree of universal motion, one or more resilient supporting members are arranged adjacent the king-pin. The forecarriage comprising a pressed steel single unit 7 is supported from the axle by springs 4 and is connected to a casting 15 on the trailer frame by a hollow king-pin 29 having some freedom of movement. The trailer is supported from the forecarriage through a ball-thrust bearing 22 having a spherical bearing on a plate 25 which engages the upper ends of supporting springs 26. Compression of the springs 26 is limited by engagement of the plate 25 with the shoulder 11.
Patent GB-223221-A (GB)
Filed: 1924-09-30
Abstract: C : C-Disubstituted barbituric acids, which contain a b -bromallyl group together with another bromallyl group or an alkyl, aryl or alicyclic group, are prepared by known methods by introduction of the groups into barbituric acid or by conversion of the corresponding malonic acid derivatives.  The products show pronounced hypnotic activity.  According to the examples, (1) b -bromallyl-isopropylbarbituric acid is prepared by heating isopropylbarbituric acid with sodium ethylate and 1 : 2-dibromo-2 : 3-propylene, or by shaking a solution of isopropylbarbituric acid in caustic soda with the dibromopropylene; (2) di-(b -bromallyl)-malonic acid diethyl ester is first obtained by the interaction of malonic acid diethyl ester, sodium ethylate and 1 : 2-dibromo-2 : 3-propylene, and then made to combine with urea in the presence of sodium ethylate; from the sodium salt of the di-(b -bromallyl)-barbituric acid which is produced, the free acid can be obtained.  Instead of urea, N-substituted ureas may be employed, or substances such as guanidine may be used which yield barbituric acid derivatives capable of ready transformation into the corresponding barbituric acid.  The Specification as open to inspection under Sect. 91 (3) (a) describes also the preparation of analogous barbituric acids containing a g -bromallyl-group and states that 1 : 2 : 3-tribromopropane may be used instead of 1 : 2-dibromo-2 : 3-propylene, in which case hydrogen bromide has to be split off. It also states that urea may be replaced by thiourea for reaction with the malonic acid derivatives.  This subject-matter does not appear in the Specification as accepted.
Patent GB-443956-A (GB)
Title: Improvements in and relating to radio receivers
IPC: H03G3/26
Filed: 1934-08-10
Abstract: 443,956. Valve circuits for wireless reception. FERRANTI, Ltd., HALL, A., and SEARBY, N. H., Hollinwood, Lancashire. Aug. 10, 1934, No. 23203. [Class 40 (v)] In a radio receiver having automatic control of volume, muting bias on the signal rectifier is removed when the signal strength exceeds a predetermined value by a device operated by the D.C. component derived from rectification of signal voltage, the selectivity of the AVC and muting circuits being capable of variation without affecting the selectivity of the receiver. The output from a high or intermediate frequency amplifier 1 is applied at 2 to the signal diode 25 of a double diode pentode 7 and at 4, 5 to an A..V.C. diode 6, from the load resistance 8 of which, A.V.C. potentials are applied through resistance 11 to preceding amplifier stages. The signal diode circuit 25 includes a filter resistance 23 and load resistances 22, 21, the rectified potentials being applied to the control grid of the low frequency pentode 7 from resistance 30. The control grid of a triode 14 acting as a muting impedance is connected to a tapping on the resistance 8 and its anode is connected to the junction of resistances 22, 21. The arrangement is such that with no signal, the impedance of the valve 14 is low and there is a large p.d. across resistance 21 ; the diode 25 is thus practically at earth potential, while its cathode 26 has a positive potential with respect to earth equal to the sum of the voltages across resistances 27 and 19 ; this is the delay voltage. The circuit 4, 5 is much more sharply tuned than circuit 2, so that when a station of the predetermined strength is tuned in, the rectified voltage across resistance 8 causes the grid of triode 14 to swing highly negative, its impedance becomes very great and the potential of its anode, and therefore that of the diode 25, becomes almost that of the cathode 26 ; the muting is thus removed. The valve 14 may be replaced by a relay, the winding of which constitutes resistance 8. Circuits 4, 5 may be coupled in any manner to any part of circuit 2 and the coupling between 4 and 5 may be variable to vary the frequency band of the muting control. Resistance 21 may be omitted and the anode of 14 is then connected to the junction of 22, 23.
Patent GB-517234-A (GB)
Title: A device for use in the tuition of voice production
IPC: G09B19/04
Filed: 1938-08-06
Abstract: 517,234. Teaching voice production. SABEL, B. August 6, 1938, No. 23241. [Class 88 (ii)] A device for use in teaching voice production comprises a plate having two scales marked thereon, one representing the notes of the musical cale reading upwardly for ascending notes and the other scale representing degrees of repression of respiration required for each note and reading downwardly from a minimum to a maximum, indicators coupled for simultaneous movement over the two scales being provided so that as one ascends the note scale the other descends the repression scale. As shown, a disc 3 has ascending notes marked on the left side and degrees of repression corresponding to each note marked on the right side, two pointers 11 being interconnected by a bar 9 centrally pivoted behind the disc. Lead lines from the note scale indicate on a representation of the human face the assumed parts of the head which resonate to the corresponding notes, and a mirror 5 enables the singer to observe the movements of his mouth. Cords passing over pulleys or other linkage for interconnecting pointers moving over two scales may be used.
Patent GB-1294027-A (GB)
Title: Process for acid copper plating of zinc
IPC: C25D5/34
Filed: 1970-05-13
Abstract: 1294027 Electro-plating copper on zinc; immersion copper or nickel plating UDYLITE CORP 13 May 1970 [19 June 1969] 23269/70 Headings C7B and C7F  A smooth adherent Cu electro-plate is formed on complex Zn castings having recessed areas by applying an electrolytic Cu, Cu alloy e.g. brass or Ni strike to the Zn surface; treating the strike plated Zn surface with an immersion Cu plating bath to form a displacement Cu deposit (e. g. 5-35 millionths of an inch thick) on the surface, optionally treating with an immersion Ni plating bath to form a further displacement Ni deposit; and then electro-plating Cu (e. g. to a thickness 0À002-0À0015 inch) from an aqueous acidic Cu electro-plating bath, e.g. containing copper sulphate fluoborate, nitrate, sulphamate, alkyl sulphonates or disulphonates, with one or more brightening and levelling additives. The Cu electro-plate may be further electro-plated with Ni and/or Cr. The Zn surface may be prior cleaned with alkaline, acidic or organic solvent by scrubbing, spraying, vapour degreasing or steam or ultrasonic cleaning. The Cu strike plating bath may contain copper and alkali metal cyanides, an alkali metal hydroxide and Rochelle salt. The immersion Cu plating bath may comprise 8-30 g/l of Cu supplied by a water soluble Cu salt, e.g. sulphate, chloride, acetate or carbonate; 30-350 g/l of a primary complexing agent for cupric ions, such as an alkali metal (e. g. Na) gluconate, citric acid, a tartrate, ethylene diamine, diethylene triamine, diethanol glycine, E.D.T.A. or lactonitride; 5-80 g/l of an alkali metal (e.g. Na) hydroxide or carbonate; 5-70 g/l of an alkali metal (e.g. Na) or alkaline earth metal (e.g. Mg) chloride as accelerator and/or 0À2-5 g/l of an alkali metal (e.g. Na) cyanide or NH 4 OH as a secondary complexing agent for cuprous ions. The bath may be air agitated. The immersion Ni plating bath may comprise 50-500 g/l NiCl 2 , 50-300 g/l NiSO 4 , 20-100 g/l NaCl and 10-45 g/l H 3 BO 3 .
Patent GB-646266-A (GB)
Title: Improvements in and relating to hydraulic step by step drives
IPC: F16H31/00
Filed: 1948-09-04
Abstract: 646,266. Ratchet gearing. BOULTON PAUL AIRCRAFT, Ltd., NORTH, J. D., and MILLARD, D. J. Sept. 4, 1948, No. 23320. [Class 80(iii)] [Also in Group XXIX] In a hydraulic step-by-step drive comprising a source of supply of liquid under pressure, such as an electrically-driven, radial-cylinder, variable-delivery pump 15, and a double-acting ram 14 operative in both directions of movement to rotate a ratchet wheel 1, means, such as valve 18, are provided to reverse the direction of flow of liquid to the ram when the latter reaches the limit of its travel in each direction. Each stroke of the ram 14 acts through a rocking lever 4 and links 2 and 3, one on each side of the lever pivot 5, to rotate the ratchet wheel 1. The delivery of pump 15 is variable under the control of an eccentric adjusting member 17, the pump 15 drawing from a sump 22 and supplying the ram 14 through valve 18 which is operated by tappets 32 and 33 on a rod 34 attached to the lever 4. Holes 11 in the wheel 1 are formed to receive pins which engage with ears 12 and 13 on the links 2 and 3 in order to rotate the wheel 1 in the reverse direction in the event of an emergency. Leakage from the pump is returned to the sump by a pipe 25. According to the Provisional Specification the pump may be of the reversible type thereby enabling the reversing valve to be dispensed with; the pump may however be replaced by an accumulator. Also, the rocking lever may be actuated from the ram through another lever and a torque tube, the latter also operating the reversing valve mechanism, and the whole of the apparatus may be duplicated for reverse operation.
Patent GB-240298-A (GB)
Title: Improvements in or relating to apparatus for making paper bags or like receptacles
IPC: B31B3/64
Filed: 1924-10-03
Abstract: 240,298. Rose, W., and Rose Bros. (Gainsborough), Ltd. Oct. 3, 1924. Paper bags, making.-In a machine for making paper bags and the like, the plate 4 that presses the folded bottom of the bag against the end of the bag mandrel is so mounted that it can readily yield to adapt itself to inequalities in the thickness of the folds. The plate 4 is carried by a plunger 27 mounted on a swinging arm 6, the rounded end 35 of the plunger bearing against a concave part 26 of the plate 4. Flanges 24, 36. formed with segmental gaps, detachably secure the plate 4 on end of the plunger 27, a screwed pin 39 being inserted to prevent accidental disconnection. The arm 6 may act in the plunger 27 through a spring 30 bearing on a collar 29, and spiral springs 40 may be interposed between the collar 29 and the flange 24.
Patent GB-1156664-A (GB)
Title: Marine jet propulsion apparatus.
Inventor: MARTIN-LEAKE HUGH EVELYN
IPC: B63H11/11
Filed: 1966-02-07
Abstract: 1,156,664. Marine jet-propulsion apparatus. CAPE MARINE PROPULSION Ltd. 7 Feb., 1967 [7 Feb., 1966; 25 May, 1966], Nos. 5235/66 and 23377/66. Heading B7V. In marine jet-propulsion apparatus, steering of the craft wherein the apparatus is lodged is effected by a deflector 10 situated in the path of a jet of water produced by an axial-flow impeller 1 within a nozzle fixed to the transom 2 of said craft, the deflector being attached to vertically-orientated stub-shafts 11, 11<SP>1</SP> that are pivotally supported by a casing 3 carrying a pair of overlapping arcuate obturator-plates 14, 15, which when occupying the position shown deflect the jet through an aperture 6 so as to propel the craft in the astern direction. The plates 14, 15 are attached to pairs of side plates 16, 16a, respectively, which are pivotally supported by stub shafts 17, one of the plates 16a being furnished with a lever 22 so that the plates 14, 15 can be moved into, or out of, the path of the jet. To effect steering of the craft when going astern, a deflector 25, which includes inclined plates 28, is fixed to the shaft 11<SP>1</SP>; and, to minimize drag caused by the plates 28 when the craft is going ahead, pivotal plates 30, 31, Fig. 3, may be provided as shown.
Patent GB-737301-A (GB)
Title: Sensitive polarised electric relay
IPC: H01H51/22
Filed: 1953-08-25
Abstract: 737,301. Electromagnetic relays. COMPAGNIE INDUSTRIELLE DES TELEPHONES. Aug. 25, 1953 [Aug. 29, 1952], No. 23401/53. Class 38 (5). A relay comprises a non-magnetic metal frame 1 having a forwardly extending arm slotted at 7 to receive a shoulder 4 of a U-shaped magnet core 2 energized by coils 32. A groove 3 in the core 2 receives the lower end of a permanent magnet 5 retained by a lug 8 of the frame 1. The upper ends of the core 2 and magnet 5 are received in openings formed in a non-magnetic support plate 9 having lugs 11 by which it is fixed with screws 10 to the frame 1. An insulating member 12 fixed by screws 13 to the frame 1 carries support plates 18 between which an armature-carrying spring blade 16 is clamped by screws 17, the armature 21 having lugs riveted to lobes 15 of the blade. By loosening the screws 17 the blade 16 can be moved between the supports 18 to vary the air gap. Bosses 30 on the underside of the member 12 co-operate with a V-formation 29 in the frame 1 whereby upon loosening screws 13 the member 12 may be rotated slightly so that the armature 21 may be either symmetrically disposed with respect to the core 2 or it may be asymmetrical and have a return torque produced by the stress in the blade 16. Contact blades 22 carried by the armature co-operate with fixed contact blades 25 adjustable by screws 28.
Patent GB-448742-A (GB)
Title: A new or improved process of producing surgical and sanitary pads, dressings and bandages
IPC: D06M15/333
Filed: 1935-08-21
Abstract: Surgical and sanitary pads, dressings and bandages composed of fibrous material are given a waterproof but air-permeable coating by placing one or both sides in a solution of a polymer of vinyl alcohol, acrylic acid, or an ester thereof, containing a softener, poured upon a hard surface, and subsequently allowing the solvent to evaporate.  A suitable solution comprises 1 part of polymerized ethyl acrylate dissolved in 4 parts of a mixture of acetone and methylene chloride, about 5 per cent of dibutyl phthalate being added as softener.  A suitable surface is a plate of frosted glass.  An opening may be made in the coating to expose the fibrous material to the part to be treated.
Patent GB-651443-A (GB)
Title: Improvements in and relating to gyratory crushers or attrition mills
IPC: B02C2/04
Filed: 1948-09-07
Abstract: 651,443. Gyratory crushers. BOULY, H. G. (Nordberg Manufacturing Co.). Sept. 7, 1948, No. 23550. [Class 59] A gyratory crusher or attrition mill, including an upper and normally fixed member and a lower member, the two members defining a crushing or attritior zone, and means foi gyrating the lower member, is characterized by means for feeding material to the crushing or attrition zone including a positively rotatec feed plate and mean; for delivering material to the feed plate. Ar eccentrically aperturec sleeve 30 is rotatec about the upper part 19 of a fixed vertical post 15 and has mounted or its inclined outer sur face a sleeve-like exten sion 65 of a crusher heac 60 which is gyratec about a point A, the intersection of the axis 7 of the exterior cylindrical surface of the post 15 and the axis X of the inner surface of the sleeve 65, and is supported by a spherical bearing ring 72 of the main frame. The concave 130 is secured to a vertically adjustable backing 131 normally held down by fluid pressure pistons 213 which allow the concave to tilt when uncrushables enter the crushing zone. The eccentric sleeve 30 has an upper extension 50 extending through the gyratory head 60 to which is attached, and directly rotated thereby, a horizontal feed plate 52, 54. Sealing means 81, 86 are provided between the underside of the feed plate and the gyratory head 60. Material fed through a feed ring 162 falls onto the rotating feed plate 54 whence it is thrown, heavy and light particles being well mixed, against a deflector cone 139 passing therefrom onto a part 77 of the crusher head and into the crushing zone. Material fed to the mill may have a particle size no larger than the distance between the crushing members when they are at their closest position. A sealing apron 92 on the head 60 depends into a cutter 94 in which water is circulated.
Patent GB-240456-A (GB)
Title: Improvements in two-stroke internal combustion engines
IPC: F02B75/02
Filed: 1925-09-22
Abstract: 240,456. Rochefort, F. Sept. 25, 1924, [Convention date]. Valves.-Inlet of air from A to the pump cylinder C<1> through ports L is controlled by the lower edge of a slide valve P<2>, and the delivery of this air to a collector c at the top of the valve chamber is controlled by ports L<1> in the same valve, and also, in the case of slow-running engines, by a disc lift valve D, the opening of which is limited by a stop D<1>. The upper edge of the valve P<2> controls the flow of scavenging and charging air from the collector c through ports L<3> into the working cylinder. The ports L, L<3> communcate with annular chambers surrounding the valve P<2> so as to balance the pressure thereon. Regulating.-In aircraft engines, means may be provided for adjusting the angular relation between the valve-actuating shaft and the crank shaft, in order to vary the volume of air delivered by the pump in accordance with the altitude.
Patent GB-983105-A (GB)
Title: Thermionic converter
IPC: H01J45/00
Filed: 1961-06-30
Abstract: 983,105. Thermionic generators. STANDARD TELEPHONES & CABLES Ltd. June 30, 1961 [July 7, 1960], No. 23737/61. Heading H1D. In a thermionic converter, the anode and cathode are initially spaced apart by a distance greater than that required to counteract the effects of space charge, and a source of subliming metal, communicating with the anode and arranged to be heated thereby, is provided so that during operation metal is deposited on the anode surface and the anode-cathode separation is thereby decreased to that required for optimum efficiency, the heat due to the increase of electron flow to the anode preventing further deposition of metal. Initially the converter may be evacuated or may contain caesium vapour. As shown, a tungsten emitter 1 is spaced from a tantalum or copper collector 2 by a ceramic ring 4 and is surrounded by a reflective heat barrier 2b. A source 3a of subliming metal, e.g. Cd, Zn, Mg, Sr, Ba, Ca, Ag, Cu or Mn, is separated from the discharge space by a porous plug 3c of W, Ni, Ta or Mo, and is surrounded by a reflective heat barrier 3b. A conical slot 2c in the collector directs heat inwards. The emitter temperature may be 1000 to 2500 C. and the collector temperature 400 to 1000 C. with an initial spacing of 0À01 inch which, during operation, is reduced to 0.0001 inch, by precipitation of metal thereon.
Patent GB-384252-A (GB)
Title: Improvements in and relating to electric fuses
IPC: H01H85/42
Filed: 1932-08-25
Abstract: 384,252. Fusible cut-outs..INTERNATIONAL GENERAL ELECTRIC CO., Inc., 120, Broadway, New York, U.S.A.- (Assignees of Allgemeine Elektricitats Ges. ; 2, Friedrich Karl-Ufer, Berlin.) Aug. 25, 1932, No. 23830. Convention date, Aug. 25, 1931. [Class 38 (i).] An organic material, e.g. artificial resin, is situated away from the region where arcing will occur in a fuse cartridge, to provide arcextinguishing gas upon fusion of the element. The channel b of the cartridge containing the fusible conductors c is closed by discs, the innermost of organic material f, -and the others of asbestos e, a terminal cap d establishing electrical connection with the fusible conductors. In modifications, the walls of the channel are lined with organic material, or the latter is mixed with a sealing medium to close the ends of the channel.
Patent GB-1474599-A (GB)
Title: Method for the production of activated carbon spheres
IPC: C01B32/384
Filed: 1974-05-29
Abstract: 1474599 Activated carbon spheres KUREHA KAGAKU KOGYO KK and TOYO BOSEKI KK 29 May 1974 [29 May 1973] 23897/74 Heading C1A Activated carbon spheres are produced by (1) wetting and mixing 100 parts by wt. of pitch with from 10-50 parts by wt. of an aromatic solvent for said pitch and from 2-50% wt., based on total weight of said pitch and said aromatic solvent, of a nitrogen-containing compound of the kind defined, (2) shaping the resultant mixture into spheres; (3) removing said aromatic solvent by immersing the spheres in an organic solvent miscible with the aromatic solvent but not dissolving the pitch, thus producing a sphere with a 2-60% nitrogen concentration (4) infusibilizing the resulting porous pitch spheres by oxidation and (5) activating and carbonizing the pitch spheres to form activated carbon spheres. The nitrogen-containing compound has at least 10% N by weight; is wettable by the pitch and the aromatic solvent; and is sparingly volatile. Specified compounds include ammonium salts, nitrates, N- containing high molecular weight compounds, N-containing heterocyclic compounds, aromatic hydrocarbons with N-containing substituents, aliphatic amines, N-containing alicyclic compounds, and guanidine, urea and semicarbazides and their derivatives. Specified aromatic solvents are benzene, toluene, xylene, naphthalene, methyl-naphthalene and tetralin. The pitch may be of petroleum or coal origin. Solvents specified for removing the aromatic solvent are alcohols and paraffinic hydrocarbons, and may be used mixed with an acid, e.g. HCl or HF, or an acid anhydride such as acetic or maleic, to react with amines present as N-containing compound. The infusibilizing treatment may be accomplished by use of an oxidizing gas, e.g. air, oxygen and/or NO 2 , or by use of an oxidizing aqueous solution, e.g. of HNO 3 , H 2 SO 4 , K 2 Cr 2 O 7  + H 2 SO 4 , HOCl, NaOCl or permanganates. Activation and carbonization may be carried out with steam and/or CO 2 , with or without N 3  or O 2 , at 800-1100 C. The carbon spheres may be used for removing SO 2  from a combustion exhaust gas, for treatment of sulphite waste liquor, and for deodorizing plant effluents.