baber/WOPTO huggingface dataset:
Patent GB-374855-A (GB)
Title: Improvements in and relating to the transmission of electric power between direct and alternating current circuits
IPC: H02M7/51
Filed: 1931-03-13
Abstract: 374,855. Converting. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Howard, A. ; 958, Park Avenue, Schenectady, New York, U.S.A.) March 13, 1931, No. 7816. Convention date, March 20, 1930. [Class 38 (ii).] In an arrangement for supplying an A.C. load circuit 11 from a D.C. supply such as a three-wire system 10 through a pair of ionization discharge valves 12, 13 rendered conductive alternately under the control of grid potentials derived from transformers 14, 15, means are provided for neutralizing the supply voltage applied to the anodes at the end of each conducting period in order that current may be stopped in each valve in turn and the corresponding valve maintained inoperative by a negative grid potential during its nonconducting period. The means comprises a condenser 16 arranged to be charged during the conducting period of the valve 12 through a valve 18 and discharged at the end of that period through a valve 17 to apply a neutralizing voltage across the anode-cathode path of the valve 12. During the conducting period of the valve 13, the condenser is charged through valve 17 and at the end of that period is discharged through valve 18 to apply a neutralizing potential across the anode-cathode path of the valve 13. The valves 17, 18 operate under the control of grid potentials derived from a transformer 20 energized synchronously with the grid transformers 14, 15, a condenser 19 being provided in the primary circuit to give the required lead to the grid potentials of the valves 17, 18. A modified arrangement for use on a two-wire D.C. system is described, Fig. 2 (not shown).
Patent GB-195094-A (GB)
Title: Improvements in dampers for sound boxes of phonographs and the like
IPC: G11B3/46
Filed: 1923-03-19
Abstract: 195,094. Logan, J. M. March 20, 1922, [Convention date]. Dampers for sound modifying.-A damper for attachment to the stylus-arm of a sound-box consists of a block 8 of soft rubber or the like, preferably shaped as shown in Fig. 1. A slit 10 is made in one edge, and one or more notches 12 in the opposite edge 11, so that by pressing the ends of the edge 11 towards each other the slit 10 opens' and can be engaged with the stylusarm 7. The damper grips the arm -elastically.
Patent GB-1412293-A (GB)
Title: Fluoran compounds and their use in pressure-sensitive copying paper
IPC: C09B11/26
Filed: 1972-02-21
Abstract: 1412293 Chromogenic fluoran-like compounds WIGGINS TEAPE Ltd 9 Feb 1973 [21 Feb 1972] 7848/72 Heading C4P [Also in Division D2] Novel colourless colour formers have the formula wherein R<SP>1</SP>, R<SP>2</SP> and R<SP>3</SP> are each H or C 1-5  optionally substituted alkyl or form part of a heterocyclic ring containing the attached N atom; R<SP>4</SP> is halogen, alkyl, aryl, aralkyl, alkoxy, NO 2 , optionally substituted amino, acyl, carboxy, CN or SO 2 NH 2 ; n is zero 1, 2, 3 or 4; A is an optionally substituted aromatic ring the points of attachment being at two pairs of ortho positions ; and Z is an optionally substituted divalent radical forming a 5- or 6-membered ring with -NR<SP>3</SP>- and A. They are prepared by reaction together of compounds of the formulµ (wherein R<SP>7</SP> is H or C 1-5  alkyl) in the presence of a condensing agent. The colour formers have use in pressure-sensitive copying systems, in which, dissolved in a suitable solvent, they are brought into contact with an electron-accepting substance to form a coloured image.
Patent GB-748208-A (GB)
Title: Improvements in seating metal insets
IPC: F42B33/06
Filed: 1949-03-23
Abstract: 748,208. Making projectiles; jointing by forging. JONES, C., and McCORMICK, G. B. March 23, 1949, No. 7892/49. Classes 83 (2) and 83 (4). A metal inset, e.g. the driving band 13, is seated in a recess in an object, e.g. the shell 4, by placing the shell in a tapered die 3 and over the shell the driving band which is out of register with the recess, then pressing the annular punch 12 against the driving band. Till the band rests against the lower lip of the recess, the shell remains stationary, but as the thrust of the spring 6, mounted between the movable plate 7 and the fixed plate 8 is overcome, the shell and band move together through the tapered die to force the band into the recess. As the punch 12 passes the throat of the die, the excess metal from the band is drawn out into a collar. The same method may be applied to other than vertical presses.
Patent GB-596599-A (GB)
Title: Improvements in or relating to extra air valves for internal combustion engines
IPC: F02M23/00
Filed: 1945-03-29
Abstract: 596,599. Fluid-pressure servomotorcontrol systems. CRASKE, A. H. March 29, 1945, Nos. 7898 and 21420. [Class 135] [Also in Group XXVII] An extra-air valve 21 supplying air to the induction pipe of an internal-combustion engine is opened by fluid under pressure acting on a plunger 29 having a cup-leather packing 30. The supply of the fluid, e.g. pressure lubricant from the engine lubricating system, is controlled by a pair of parallel valves 35 arranged so that, when one is open, the other is closedj The valves are operated by a pair of arms 40 on a bell-crank lever having an arm 38 which is attracted by a solenoid 12 against an adjustable spring 39. The circuit of the solenoid includes the gravity actuated switch, which closes when the vehicle is heading down hill or suddenly decelerated, and switches which are connected to the accelerator and brake pedals so as to be closed when these pedals are free. The circuit also includes a main switch, and a light indicating when it is closed.
Patent GB-1508401-A (GB)
Title: Envelope window cutting
IPC: B31B50/83
Filed: 1976-11-25
Abstract: 1508401 Cutting apparatus DAVID CARLAW (ENGS) Ltd 25 Nov 1976 [28 Feb 1976] 07932/76 Heading B4B An arrangement for making an adjustable length of cut in paper, e.g. envelope blanks, comprises a fixed knife 7 having a cutting edge 8 and a movable knife 11 mounted on a rotatable holder 9 for pivotal movement about a stud 12 so as to enable an arcuate cutting edge 13 of the knife 11 to be adjusted so that more or less of the cutting edge co-operates with the cutting edge of the fixed knife to vary the length of cut. The knife 11 is provided with a slot 16 for co-operation with a champing bolt 17, the knife being adjusted by a screw 14. The above cutting arangement is mounted in a machine for cutting window openings in envelopes, the machine including cutting blades 18 , 22 23 for cutting transverse cuts to join up with the cuts produced by the above arrangement.
Patent GB-249862-A (GB)
IPC: A47G23/02
Filed: 1926-03-23
Abstract: 249,862. Jaymes, F. F., and Le Chaix, F. March 24, 1925, [Convention date]. Void [Published under Sect. 91 of the Acts]. Drinking-vessels. - A detachable metallic handle, for a cup or other receptacle provided with a groove for its reception, comprises a gripping collar C, adapted to enter the groove B and be tightened by a screw E passing through a lug C<1> on the collar into the handle D which is set back so that it only touches the cup at its connection with the collar.
Patent GB-840186-A (GB)
Title: Improvements in and relating to the decoration and reinforcement of articles
Inventor: HILL ALAN CHARLES
IPC: B29C65/18
Filed: 1958-03-12
Abstract: 840,186. Moulding decorated and/or reinforced articles. PRESSED STEEL CO. Ltd. March 12, 1958, No. 7999/58. Class 87(2) [Also in Group VIII] Articles 12 made of, or having an outer covering 13 of, leather, leather-cloth, fibre board, or synthetic resin, e.g. suitcases, raincoats, footwear, table tops, trim pads for vehicle bodies, or storage and filing cabinets, are decorated and/or reinforced by placing a thermoplastic bead or cord 14 in a recess 16 in a tool 15 which is applied to the articles with heat and pressure to cause the bead or card to bond with the article and to take up the surface configuration of the recess. The tool 15 may be part of a die for decoratively shaping the surface of the article or part of a roller which is moved relative to the article. On the embodiment shown in Fig. 4, a reinforcing strip 17 is moulded on the edge of a plastic raincoat, heat and pressure being applied through jaws 20, 21 one of which is provided with a cutting edge 24 for removing the unwanted material 22.
Patent GB-557635-A (GB)
Title: Improvements relating to the treatment of rubber
IPC: C08L7/02
Filed: 1942-06-11
Abstract: 557,635. Treating rubber dispersions. AFRICAN SISAL & PRODUCE CO., Ltd., WALSH, C. L., and MAY, J. June 11, 1942, No. 8012. [Class 70] Rubber dispersions such as latex are thickened and the resistance to coagulation is increased by addition of the water-soluble constituents extracted from plants of the Agave family, including sisal and American aloe, for example, the product described in Specification 538,271. The addition may be made to vulcanized latex or latex which has been creamed or centrifuged or concentrated by evaporation. The thickened latex may be used in dipping processes, or dried to form sheets or gas bubbles may be formed or dispersed in it and the froth dried.
Patent GB-409496-A (GB)
Title: Improvements in gas compressors
IPC: F02B71/06
Filed: 1933-03-17
Abstract: 409,496. Two - stroke engines. PESCARA, R. P., 115, Rue de la Tour, Paris. March 17, 1933, Nos. 8182 and 8183. Convention dates, March 17, 1932 and Aug. 29, 1932. [Class 7 (ii).] The return stroke of a motor-compressor with free pistons is effected by cushioning means independent of the compression spaces in conjunction with the gas remaining in the clearance spaces, the independent cushioning means being connected with a source of constant pressure. Fig. 1 shows a compressor in which a cushioning cylinder space 8 is provided connected with the receiver 7 fed by the compressor. In a modification, Fig. 2, the compressor piston slides over a sleeve 9 through which and through a pipe 10 passing into it, the gas is compressed into the receiver 7 ; the cushioning space is thus the interior of the piston. Each of these arrangements may be modified to provide a stage compressor in which an intermediate receiver supplies a part of the return energy in addition to that stored in the clearance spaces and in the constant-pressure cushion connected with the final stage receiver.
Patent GB-416788-A (GB)
Title: Improvements in and relating to extensible electric conductor cords
IPC: A43D1/02
Filed: 1933-03-17
Abstract: 416,788. Cables. MEIWALD, F., Schloss Schonbrunn, Vienna. March 17, 1933, No. 8189. Convention date, March 24, 1932. [Class 36.] An extensible cable comprises insulated conductors 1-4 which are braided, plaited or knitted together and provided with either a central elastic core 5, Fig. 1, or an outer elastic sheath 20, Fig. 5, to the ends of which the conductors are permanently secured. The core 5 may consist of spiral springs or of rubber tubes, strips or cords, whilst the sheath 20 may. be formed by a rubber tube or spiral spring. To prevent excessive extension, the cable may include relatively inextensible strands 25, Fig. 5, which are of length equal to the maximum permissible extended length of the cable ; or the core 5 may be surrounded by a slackly knitted sheath.
Patent GB-227407-A (GB)
Title: Improvements in or relating to arc discharge tubes
IPC: H01J17/52
Filed: 1924-04-01
Abstract: 227,407. Naamlooze Vennootschap Philips' Gloeilampenfabrieken. Jan. 10, 1924, [Convention date]. Arc lamps; vacuum tubes.-An arc discharge tube, particularly for rectifying alternating currents, consists of an incandescent c a t h o d e yielding an emission of electrons sufficient for the operation of the tube at a materially lower temperature than electrodes of tungsten, an anode, and a gaseous filling consisting of a rare gas or a mixture of rare gases, the pressure of the gas and the distance between the electrodes being such that the tension at the arc is lower than the tension of ionisation of the gaseous filling. The tube consists of a bulb 1, a cathode 5 consisting of a coiled wire, and a cylindrical anode 7 of nickel. The cathode is made of platinum, nickel, or similar metal having a rather high melting point, and is coated with one or more oxides of alkaline earth metals, such as barium oxide. It may also consist of nickel wire, the surface of which is alloyed with barium. The gaseous filling preferably consists of argon at a pressure between 10 and 20 millimetres of mercury, and in this case the distance between the electrodes is about 5 millimetres. The tube is shown connected as a rectifier for charging a battery 14. The voltage of the secondary winding 11 of a transformer is supplied between the cathode and the anode. When the switch 13 is closed, the cathode is connected to a voltage tapped off from the secondary winding 11. When the arc is formed, the switch may be opened, the cathode being maintained at the required temperature by the arc discharge.
Patent GB-1366691-A (GB)
Title: Fluorinated compounds containing functional groups
IPC: C11D1/00
Filed: 1971-03-31
Abstract: 1366691 Aromatic ethers of tetrafluoroethylene oligomers IMPERIAL CHEMICAL INDUSTRIES Ltd 7 March 1972 [31 March 1971] 8295/71 Addition to 1130822 Heading C2C The invention comprises a process for the preparation of aromatic ether derivatives of tetrafluoroethylene oligomers which comprises reacting a tetrafluoroethylene oligomer (C 2 F 4 ) n , where n is an integer greater than one, with an aromatic compound containing at least one hydroxyl group attached directly to the aromatic nucleus, in the presence of an amine, whereby HF is eliminated between an OH group and the oligomer. The aromatic compounds may be substituted by other functional groups in addition to the hydroxy group(s) or, if the aromatic compound has only one or two lower alkyl groups, as in the preferred case, these groups may be further reacted, e.g. sulphonated, nitrated, chlormethylated and chlorsulphonated, subsequent to the reaction with the oligomer.
Patent GB-989982-A (GB)
Title: Improvements relating to dolls
Inventor: EVANS BERNARD WESTON
IPC: A63H3/28
Filed: 1963-03-01
Abstract: 989,982. Dolls. PEDIGREE DOLLS Ltd. Feb. 21, 1964 [March 1, 1963], No. 8347/63. Heading A6S. In a doll the cry-producing mechanism comprises a reed operated by a cylinder and piston driven by an electric motor. A main switch 10 is closed by movement of the arm 17 to close contacts 7, 11 to the battery 4. The circuit to the electric motor 8 is closed by a gravity switch 9 when the doll is laid down, whereby the shaft 28 of the motor 8 rotates an arm 20 connected to a piston 22 moving in a cylinder 24 to operate a sound-emitting reed 25.
Patent GB-609639-A (GB)
Title: Improvements relating to multi-layer building materials
IPC: E04C2/04
Filed: 1946-03-19
Abstract: 609,639. Composite e building-slabs. STRUCTURAL & MECHANICAL DEVELOPMENT ENGINEERS, Ltd., and GOLDBERG, A. March 19, 1946, No. 8523. [Class 87(i)] A multi-layer slab comprises an outer layer of dense concrete, or mortar united by bitumen to a middle layer of cellular concrete which is united by a waterproof material to an inner layer of plaster &c. The waterproof material may be chlorinated rubber paint, bituminous compound or reclaimed rubber solution. The outer and middle layers may be further joined together by bitumen-coated cleats.
Patent GB-1171394-A (GB)
Title: Device for Counting Folded Papersheets or Printed Matters, especially Folded Newspapers, which are conveyed in Overlapping Manner on Conveyorbands
Inventor: GUGGISBERG ERNST
IPC: G06M7/00
Filed: 1967-02-22
Abstract: 1,171,394. Counting-apparatus. GRAPHICART INTERNATIONALE AUSRUSTUNGSGESELLSCHAFT FUR GRAPHISCHE KUNST A.G. 22 Feb., 1967, No. 8528/67. Heading G4D. The edges of overlapping sheets, especially newspapers, passing along a conveyer 2, are riffled by a pair of rotating discs 4 so as to interrupt a beam of light from a source 9 between the discs to a photo-cell 7. The photo-cell is connected to a counter. In an alternative (Fig. 3, not shown) the pair of discs may press on the middle of the sheets and there are then two guides 5.
Patent GB-1129437-A (GB)
Title: New urea derivatives, process for their preparation, and therapeutic composition containing same
IPC: C07D295/215
Filed: 1967-02-22
Abstract: 1,129,437. Urea derivatives. CENTRE D'ETUDES POUR L'INDUSTRIE PHARMACEUTIQUE. 22 Feb., 1967 [2 March, 1966], No. 8556/67. Heading C2C. [Also in Division A5] Novel urea derivatives of the general formula Cl 3 C.CH(OH).NH.CO.NR<SP>1</SP>R<SP>2</SP>, wherein R<SP>1</SP> is hydrogen and R<SP>2</SP> is an alkyl radical having 1-6 carbon atoms, a benzyl radical or a morpholinocarbonyl radical, or R<SP>1</SP> and R<SP>2</SP>, together with the nitrogen atom to which they are attached, represent a piperidino or pyrrolidino group, are prepared by reaction of chloral hydrate with a urea derivative of the general formula H 2 N.CO.NR<SP>1</SP>R<SP>2</SP>.
Patent GB-268779-A (GB)
Title: Process for manufacturing pure white and finely distributed sulphate of barium and sulphate of calcium
IPC: C09C1/02
Filed: 1927-03-29
Abstract: 268,779. Lichtenberger, T., and Kaiser, L. April 3, 1926, [Convention date]. Barium and calcium sulphates.-Crude barium or calcium sulphate, such as heavy spar, gypsum, or anhydrite, is dissolved in a molten alkali chloride, such as rock salt, insoluble impurities are removed by settling, and the molten mass is further purified by the addition of an acid or basic substance, for instance lime, and by blowing with air or water vapour or a mixture thereof. Any additional impurities thus deposited are removed by settling, and the molten mass then granulated in water, or otherwise cooled rapidly and then treated with water, whereby the alkali chloride, is dissolved out, and a pure white sulphate is obtained as a residue. The crude substance and the alkali chloride are preferably used in a coarsely disintegrated condition, and the alkali chloride used may be replaced by other alkali or alkaline earth salts or mixtures thereof which fuse unchanged and do not attack the sulphates when in the molten state.
Patent GB-370626-A (GB)
Title: Improvements relating to the plating or coating of wire
IPC: C23C18/16
Filed: 1931-03-20
Abstract: 370,626. Coating with metals ; cleaning metals. HUGHES, R. M., 74, Cannon Street, London.-(Johnson Steel & Wire Co. Inc. ; Wiser Avenue, Worcester, Massachusetts, U.S.A.) March 20, 1931, No. 8613. [Class 82 (ii).] Wire is straightened by passing it through a wire-straightening device and is then, without bending, subjected to the action of acid to clean it and coated with metal by the application of an aqueous coating solution e.g. a solution of copper sulphate. Wire 1 from a reel 2, Fig. 1, is passed through a bed 4 of abrasive material to a wire-straightening device 6 of the rotary type and then passes just above a tank 7 containing acid. In the tank 7, Figs. 1 and 4, are two transverse troughs 9, 10, the mouths 11 of which are contracted and are positioned slightly above the top of the tank 7, the troughs being connected by a platform 12 with walls 17, and having wings 13 extending from their outer edges. In each trough is a perforated pipe 14, below the level of acid, to which compressed air is supplied which causes the acid to rise in a fountain through the mouths 11, a layer of acid being formed on the platform 12 through which the wire passes. The acid flows back into the tank 7 from the wings 13. The upper surface of the wire is then wiped by absorbent material 19 carried by arms 20 pivoted at 21 and the lower surface by absorbent material 18 resting on the edge of the tank 7. The cleaned wire is then washed and passed over a tank 32, Figs. 1 and 2, containing a coating solution, the tank having a trough 34 with contracted mouth 35 and side wings 36 and the solution being forced up through the mouth by the passage of compressed air through a, perforated pipe 37. A perforated pipe 39 through which compressed air is passed to agitate the solution is provided at the bottom of the tank 32. The wire is washed and wiped before and after coating by passing it ever washing tanks 21<1>, 23 constructed and operated in the same way as the coating tank 32 and then through wipers 45. A second coating may be applied if desired by passing the wire over a coating tank 24. constructed and operated in the same way as the acid cleaning tank shown in Fig. 4. After passing through wipers 45 and over another washing tank 25 the wire is dried and polished by passing it through a bed 46 of granular material resting on a floor 47 heated by burners 48 and is then wound on a reel 3.
Patent GB-1183232-A (GB)
Title: Improvements in or relating to Hearing Protection Systems
Inventor: KAHN LEONARD RICHARD
IPC: A61F11/14
Filed: 1967-02-23
Abstract: 1,183,232. Headsets. L. R. KAHN. 23 Feb., 1967 [25 Feb., 1966: 15 Sept., 1966], No. 8616/67. Heading H4J. A headset for protecting a user's ear from noise includes soundproof ear protectors 10, 10<SP>1</SP> having earphones. A microphone 16, 16<SP>1</SP> responsive to environmental sounds feeds an A.F. amplifier 22, a clipper circuit 30 for limiting the maximum amplitude of the electric signals to a predetermined peak-to-peak swing and modifying circuits for changing the signal-to-noise ratio of the electrical signals including at least one bandpass filter 46 having a passband in the A.F. range, a manually operable switch on the headset assembly for each modifying circuit selectively connecting that circuit into the system. Preferably the modifying circuits include a notch filter 50 and a preemphasis circuit 42. The amplifier 22 has AGC, so that larger amplitude components are amplified less than lower amplitude components. Stereo-related microphones 16, 16<SP>1</SP> feed separate earphones. A summation circuit 62 combines a signal from a radio or other non- environmental source. Batteries 56, 56<SP>1</SP> are held to a springband 12 by spring clips 68, 68<SP>1</SP>. Alternatively a monaural system uses a single microphone 16 and single signal path 20. On-off switches 58, 58<SP>1</SP> may be on the spring- band 12. A portion of the A.F. band may be suppressed by phase cancellation or the low frequency portion may be processed differently from another portion of the band. A channel switch for changing from high to low attenuation may be operated manually or electronically, e.g. by the voice, by the telephone or by emergency alarms. The earpiece housing 11, 11<SP>1</SP> may have a movable flap by which the user may by-pass the signal-modifying channel. The system may also be used simply as a sound intensifier to increase the hearing sensitivities of a sentry or security guard.
Patent GB-1025700-A (GB)
Title: N,n-diphenyl-alkylene-ª‡,ªÏ-diamines
IPC: C07D317/44
Filed: 1965-03-15
Abstract: The invention comprises compounds of formula <FORM:1025700/C2/1> in which R1 is a hydrogen atom or an alkyl radical having 1-3 carbon atoms, R2 and R3 are hydrogen or halogen atoms or alkyl radicals, whereby R2 and R3 are not both hydrogen atoms, and n is 2 or 3, and the acid addition salts thereof, and the preparation thereof by the methods described and claimed in the parent Specification 1,025,699. N1,N1-Diphenyl - N2 - [11 - methyl - 21 - (311,411-dichlorophenyl) - ethyl] - N2 - acetyl - propylene-1,3-diamine is prepared by treatment of N1,N1-diphenyl - N2 - [11 - methyl - 21 - (311,411-dichlorophenyl) - ethyl] - propylene - 1,3 - diamine with acetic anhydride.  The N2-acetyl group is subsequently reduced to an N2-ethyl group.