baber/WOPTO huggingface dataset:
Patent GB-1314478-A (GB)
Title: Wet electrolytic capacitors
IPC: H01G9/022
Filed: 1971-06-29
Abstract: 1314478 Electrolytic capacitors SPRAGUE ELECTRIC CO 29 June 1971 [17 July 1970] 30350/71 Heading H1M An electrolytic capacitor comprises a tantalum anode having a formed dielectric film thereon, an aluminium cathode with a surface coating of aluminium oxide and a liquid electrolyte which will not attack the cathode over the the temperature range - 58 to 125C. The electrodes may be spirally wound foils separated by a porous spacer. The aluminium oxide coating may be that usually present on aluminium surfaces or it may be formed by low voltage anodizing. Examples of suitable electrolytes are those formed from boric acid, di-isopropylamine and o-dihydroxy benzene or o-dihydroxynaphthalene, boric acid, tributylamine and salicylic acid, boric acid, dimethyl formamide and methyl pentane diol.
Patent GB-737405-A (GB)
Title: New device for the utilization of india-rubber as spring
IPC: B60G17/00
Filed: 1952-12-01
Abstract: 737,405. Springs. JARRET, J. M. B., and JARRET, J. H. Dec. 1, 1952 [Dec. 6, 1951; Nov. 19, 1952], No. 30373/52. Class 108 (3). [Also in Groups V and XXII] A spring comprises a rubber mass 1 filling a closed casing 2 which is capable, under the action of an axial force F, of being non-permanently deformed so as to result in a decrease in its internal capacity. The casing 2, shown, is of stainless steel and is formed with corrugations 2a which are maintained, while the spring is under load, by hightensile steel hoops 6. The hoops may be shaped (Fig. 6) so that at maximum deflection (as shown) they come into abutment and wholly enclose the corrugations of the casing 2. The rubber 1 is vulcanized and may be a silicone rubber. Under compression of the spring, the rubber is reduced in volume, and the rubber within the corrugations flows into the main mass of rubber with a damping action. Considerable damping occurs on rebound. The spring is made by filling a non-corrugated stainless steel tube with unvulcanized or partly vulcanized rubber, closing the ends of the tube, and placing it in a mould which is shaped to correspond with the corrugations 2a. The hoops 6 are held in the mould in their correct positions relative to the tube 2 and relative to the corrugations of the mould. Axial pressure is then applied so that the tube 2 is made to conform with the mould. The pressure is then relaxed and the rubber 1 is then vulcanized. In the construction of the spring of Fig. 6, the hoops themselves, held in abutment, comprise the mould. The tube 2 may be of laminated form by coiling a strip of stainless steel sheet into a helix.
Patent GB-882873-A (GB)
Title: Improvements in gas lighting devices
IPC: H01H3/02
Filed: 1959-09-05
Abstract: 882,873. Gas lighters. WEBB, J., and WEBB, T Sept. 2, 1960 [Sept. 5, 1959], No. 30383/59. Classes 75(1) and 75(3)] A gas lighting device comprises a gas poker supplied with gas through a valve e opened by a spring E and held in closed position by the end of the stem e<SP>1</SP> of the valve abutting against the poker when the latter is inserted into a hole a in the top of the valve casing. On withdrawing the poker the valve opens to supply gas and the poker is then inserted in a hole g in a springy arm G so that the gas is directed by the poker on to a filament d energized by a battery c<SP>1</SP> through contacts closed by bending of the arm G due to the pressure necessary to insert the poker in the hole g.
Patent GB-736327-A (GB)
Title: Improvements in and relating to sliding clasp fasteners
IPC: A44B19/28
Filed: 1952-12-01
Abstract: 736,327. Sliding clasp fasteners. DESHAW, Z. Nov. 11, 1953 [Dec. 1, 1952], No. 30461/52. Class 44. A slider for a sliding clasp fastener comprises opposed shields 1, 12 to guide two stringers through the slider and an operating tab 22 pivoted about pin 24, the shields 1, 12 being assembled so as to permit spreading apart and stop means on the operating tab 22 co-operating with the outer surface of the adjacent shield and shaped to prevent spreading apart of the shields normally but to allow such spreading when the tab is pivoted to one extreme of its pivotal movement. The opposed shields 1, 12 are pivoted about pins 20 in the slot 15, of shield 12, which locate in bearing 6 in a riser portion 5 on the shield 1. Shield 12 is U-shaped and the open ends form jaws 18 that can be forced apart elastically. The open ends of pull tab 22 are formed with stop surfaces 25, coaxial with pivot pin 24 which locates in bearing 7 of the shield 1 and having radial recesses 26 (see Fig. 4). On assembly of the parts shown in Fig. 3, one or each of the side walls of the bearings 6 and 7 is peened over the pivot pin 20 or 24. The position of the pivot bearings is such that the stop surfaces 25 normally engage the shoulders 19 of shield 12 and prevent the shields spreading apart. When however the pull tab is rotated to position 221, Fig. 4, the shoulders 19 can enter the recesses 26 of the stop surfaces 25 and the shields may spread apart. In place of the pivot pin 20 the shields may be hinged by a spring tending to hold the shields together. The jaws 18 of shield 12 are forced apart by the wedge 8 when the shields are pivoted open until the jaws rest on the flat sides 7a of the wedge 8 : this produces a snap action in opening and closing the shields. The pull tab has a locking finger 29.
Patent GB-762551-A (GB)
Title: Improvements in or relating to circuits for synchronizing an oscillator with received synchronizing signals
IPC: H04L7/033
Filed: 1954-10-22
Abstract: 762,551. Automatic phase correction. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Oct. 22, 1954 [Oct. 27, 1953], No. 30567/54. Class 38 (4). [Also in Group XL (c)] An oscillator G is synchronized by a second free-running oscillator H and its phase is controlled by an error signal from a phase discriminator D, fed with the main oscillation and a synchronizing signal, applied through the corrector device U. The invention is described in connection with the reception of telegraph signals. Pulses from a crystal-controlled oscillator H at 5000 c/s. are applied to the grid of valve 14 to synchronize oscillator G operating at 500 c/s. determined by tuned circuit 16, 17, the output of H being shaped in P and frequency divided at F to produce a 50 c/s, square wave. This is fed in antiphase to the ignition electrodes of cold cathode discharge tubes 3, 4 fed also over capacitors 34, 35 with positive synchronising pulses shaped by differentiating circuit 26, 27 and cold cathode tubes 1, 2 so that 3 or 4 conducts according as the pulses from F lag or lead in phase the synchronizing pulses to apply a positive pulse over capacitor 39 or 40 igniting tube 5, which forms the first digit of a counting circuit T. Tubes 6, 7, 8 then conduct sequentially on the application of synchronizing pulses over lead 41 and through capacitors 42, 43, 44 unless in the meantime the sense of the phase difference changes and a second positive pulse applied to S to re-ignite it and reset the counting circuit. Tube 8 ignites after a sequence of like phase differences to apply a positive pulse over condensers 51, 52 to render 9 or 10 conducting, depending on whichever one is positively biased from the conducting tube 3 or 4, to apply a further positive bias to tube 12 or 13 so that positive pulses applied, at the instant when the oscillation in 16, 17 passes zero, by shaper P over capacitors 57, 58 render 12 or 13 conducting. A correcting pulse is produced by the ignition of 12 or 13 and applied through transformer 19 to abruptly shift the phase of generator H; it is also applied over capacitor 67 or 68 to ignite tube 11 and extinguish 9 or 10, producing across resistor 65 a further positive bias to render conducting whichever of tubes 3 and 4 was cut-off. The resulting pulse applied over capacitors 39 or 40 ignites 5 and resets the circuit.
Patent GB-1204808-A (GB)
Title: Improvements in or relating to photo-electrical data scanning arrangements
IPC: G06K7/10
Filed: 1968-06-26
Abstract: 1,204,808. Sensing records. SIEMENS A.G. 26 June, 1968 [27 June, 1967], No. 30587/68. Heading G4M. A photo-electric reader comprises one or more bundles of optical fibres arranged to illuminate a record surface so that light is incident at right angles thereto, and one or more bundles of fibres conducting reflected light to corresponding transducers and having a rectangular crosssection which is less than the area of a data mark applied to the record. Further transducers may be situated below the record to allow perforated records to be sensed.
Patent GB-432875-A (GB)
Title: Improvements relating to the production of cereal crops
IPC: A01N59/26
Filed: 1933-11-03
Abstract: Weeds and soil pests in land bearing cereal crops are destroyed by the application of free phosphoric acid with which may be mixed fertilizers such as ammonium phosphate, sulphate or nitrate, or potassium nitrate, or other acids such as sulphuric, nitric or acetic, or both classes of substances.  A solution made by mixing a solution of ammonium phosphate with sulphuric acid may be employed. The preparations have a fertilizing action after destruction of the weeds.  The prior use of sulphuric, nitric or hydrochloric acid or of green vitriol, copper sulphate or copper nitrate, is referred to.ALSO:A combined weed-killer and fertilizer for application to growing cereal crops consists of free phosphoric acid, with or without other acids such as sulphuric, nitric or acetic, or fertilizers such as ammonium phosphate, sulphate or nitrate, or both classes of substances, A solution made by mixing a solution of ammonium phosphate with sulphuric acid may be used.
Patent GB-734700-A (GB)
Title: Improvements relating to electrically propelled vehicles
Inventor: BINNEY ERIC ALTON
IPC: B60L9/12
Filed: 1952-12-03
Abstract: 734,700. Control of motors. ENGLISH ELECTRIC CO., Ltd. Nov. 27, 1953 [Dec. 3, 1952], No. 30649/52. Class 38 (3). A traction motor 13 is supplied from a tapped transformer 10 through rectifiers 14, a double induction regulator 16 being provided to afford a gradual change of supply voltage between tappings on the main transformer. Movement of the driver's controller to a first notch closes contacts M1, M2, C1, C2, so that the motor is connected to the 25 per cent tappings through the respective halves of the induction regulator secondary windings. Reversing switches R1, R2 are set so that a pilot motor 17 drives the induction regulator to provide a progressive change from maximum bucking to maximum boosting voltage. The resultant voltage applied to the motor is initially zero, but, as the induction regulator rotates, and its output voltage falls to zero, the resultant voltage is gradually increased until it equals that of the 25 per cent transformer tapping. The continued movement of the regulator then results in further increase of the resultant voltage until, at the full boost position of the regulator, the resultant voltage is equal to that of the 50 per cent transformer tapping. Further movement of the driver's controller closes contacts C3 to connect the motor directly to the 50 per cent tappings, followed by the opening of contacts C1, C2, to disconnect the secondary windings of the induction regulator. The contacts C4 are then closed to connect the secondary windings of the regulator to the 75 per cent voltage tappings. On the third notch of the driver's controller, the reversing switches R1, R2, are thrown to the other position, the contacts C1 are re-closed, and contacts C3 opened. The resultant voltage at first applied to the motor is reduced by the regulator voltage to be equal to that of the 50 per cent tapping, rotation of the regulator in the reverse direction increasing the resultant voltage until it equals that of the full secondary winding. The driver's controller is then moved to connect the motor directly to the outer ends of the transformer secondary winding, the induction regulator and the pilot motor being finally disconnected. The pilot motor may have differentially excited field windings respectively supplied from a D.C. source through the driver's controller and from a source of voltage varying with traction motor current. The complete sequence may be carried out automatically by control means dependent on load current. According to the Provisional Specification, the traction motor may be of the A.C. type, the rectifiers 14 being dispensed with. Specification 712,368 is referred to.
Patent GB-991975-A (GB)
Title: Drawing-off mechanism for a double bed flat knitting machine
IPC: D04B15/90
Filed: 1962-08-10
Abstract: 991,975. Knitting machines. UNIVERSAL MASCHINENFABRIK DR. RUDOLF SCHIEBER G.m.b.H. Aug. 10, 1962 [Aug. 11, 1961], No. 30709/62. Heading D1C. In a double bed flat knitting machine, a drawing-off comb 6 is lifted into position with its hooks projecting over the planes of the needle beds and its hooks 52 are caused to engage a draw thread by operation of the needles of one bed, the article being pressed off the hooks when completed or when draw-off is taken up by a roller, the comb being returned to its original position when the article is complete. As shown, comb 6 is hinged to a base plate 5 and spring biased to its basic position, Fig. 2. Plate 5 is mounted in holders 1, 2 slidable on guides 3, 4. A presser-off 7 is hinged to a shaft 19 and is also biased to its basic position, Fig. 2. Shaft 19 is mounted in slides 21, 22 movable in spring biased guides 23, 24; 25, 26. An operating bar 34 rigidly connected to shaft 19 carries a roller 35 which engages a pivoted bar 36 which can be pulled down by a controller controlled by punched cards and is restored by spring 41. In operation, comb 6 is lifted until the hooks 52 extend between the needle beds 72, 73, a bevel 75 on comb 6 striking a bevel 76 on bed 73 to tilt the comb 6 over bed 72 until an initial thread is fed across the machine and engaged by the needles 70 of bed 72. The comb is then released and descends under its own weight. As comb 6 was raised, presser-off 7 engaged the underside of bed 72 and was moved until pawls 31 on shaft 19 engaged means 32, 33. During the downward movement of holders 1, 2 pawls 31 are released and presser-off 7 is returned to its basic position meanwhile sweeping over hooks 52. The bar 36 is then pulled down and presser-off 7 pushes the thread out of the hooks and presses off the article. A long article is engaged by roller 82 after comb 6 has drawn-off sufficient fabric for it to be engaged by rollers 54.
Patent GB-675531-A (GB)
Title: Improvements in or relating to the manufacture of building blocks
IPC: B28B7/18
Filed: 1949-12-01
Abstract: 675,531. Moulding building blocks. VICTORIN, J. G. A., and REINHOLD, K. KLAESSON-. Dec. 1, 1949 [Dec. 1, 1948], No. 30897/49. Class 87(ii) [Also in Group X] A process for moulding concrete building blocks consisting of a number of parallel lamellae (see Group X) is characterized in that cores arranged between the lamellae are drawn out in groups, after moulding, in at least three different directions. The mould, consisting of an open frame 2 resting on a separate bottom 1, has slots 3 in two opposite sides to accomodate cores 4 shown partly withdrawn. When in the moulding position the inner edges of the cores 4 abut the sides of a set of vertically disposed cores 7 which are arranged in staggered positions in the mould as shown in Fig. 2. The cores 7 are supported by the mould sides and by a beam 8. After moulding they are raised vertically into a stationary compressing plunger which is slotted to accomodate them.
Patent GB-859256-A (GB)
Title: Process for printing textile materials and printing preparations therefor
IPC: D06P1/22
Filed: 1957-10-02
Abstract: Textiles of cellulose are printed with a paste containing a reducing agent and a vat dyestuff comprising acedianthrone, 2 : 21- dichloracedianthrone, 2 : 21- dimethylacedianthrone or a bromine substitution product thereof or 2 : 21-diphenylacedianthrone.  The paste may also contain polyhydric alcohols such as glycerine or glycol, urea, substituted ureas, sulphite cellulose waste liquor and formaldehydenaphthalene sulphonic acid condensates.  2 : 21-Dimethyl-acedianthrone is obtained by heating a mixture of bis- (21- methyl -91- anthronylidene)- ethane, tetrachlorethane, acetic anhydride and sulphuric acid. Monobromo- or dibromo -2 : 21-dimethylacedianthrone is obtained by brominating the above 2 : 21- dimethyl-acedianthrone.  2 : 21- Diphenylacedianthrone is obtained by heating 4- phenyl -21- carboxydiphenylmethane with glyoxal sulphate and acetic acid and then heating the condensation product so-obtained with nitrobenzene, acetic anhydride and sulphuric acid.
Patent GB-291808-A (GB)
Title: Improvements relating to changeable signs
IPC: G09F7/02
Filed: 1926-12-07
Abstract: 291,808. Jordan, A. T. Dec. 7, 1926. S i g n s, supporting and securing. - In changeable signs the blanks forming the integers from which the sign is built up are integrally formed with means whereby they can be frictionally interlocked to form a sign without further support. Fig. 1 shows locking means comprising a channelled base B tapering from one end to the other to permit the smaller end of one element entering the larger end of the adjacent element. A flange, C may be turned up on the open side of the channel at the larger end to assist in spacing the integers and the bases B may be curved. In Fig. 2 is shown a form in which the blanks A on which the letters, numbers, &c, are stencilled, painted, cut, mounted, &c. are turned down at one edge M to engage a doubled edge N on the adjacent blank.
Patent GB-245089-A (GB)
Title: Improvements in and relating to electric furnaces
IPC: H05B3/66
Filed: 1925-12-08
Abstract: 245,089. British Thomson-Houston Go., Ltd., (Assignees of Keenan, W.). Dec. 27, 1924, [Convention date]. Resistance furnaces.-Heating resistances are suspended from the furnace roof of by hooks removably secured to specially constructed bricks built into the roof. The resistances consist of zig-zag metal ribbons 17, 18, 19 supported on the hooks 16. The hooks are secured in place by passing their bent-over upper ends 24 up through recesses 20 in the sides of the bricks 15 turning them so as to pass through horizontal recesses 21 and fall into notches 22. The hooks can thus turn in the notches 22 and allow for expansion and construction of the resistances.
Patent GB-847956-A (GB)
Title: Improvements in electrical connectors and plug blocks incorporating them
IPC: H01R13/56
Filed: 1957-10-03
Abstract: 847,956. Two-part couplings. AMP Inc. Oct. 3, 1957 [Oct. 8, 1956], No. 31006/57. Class 38(1) A socket contact comprises a ferrule portion 25, crimped about the conductor and insulation of a wire 23, and a pair of parallel side-walls 28, 30 each having a concave contact. surface 40 and being formed integral with the ferrule portion. The side walls are joined at the corners of one side by integral webs 36, 38 and adjacent the corners of the opposite side by links 32, 34 each formed integrally with one of the side walls and bent round to engage a slot in the other side wall in which it is retained by a tab 44. Fig. 10 shows several contacts located in recesses in an insulating body 60 and held captive therein behind shoulders, which prevent their longitudinal withdrawal, by a cover 76 slidable on the body.
Patent GB-1463798-A (GB)
Title: Measurement of the oxygen uptake of sewage
IPC: G01N33/18
Filed: 1975-07-24
Abstract: 1463798 Determination of oxygen demand KEENE CORP 24 July 1975 [31 Oct 1974] 31049/75 Heading G1B Apparatus for determination of B.O.D. in an activated sludge sewage treatment system comprises a reaction vessel 14 closed to the atmosphere in which waste water from tank 10 is to be collected, means, as shown low-pressure inlet air source 54, constant flow regulator 50, lines 48, 40, 38, blower 32 and porous air diffuser 36, for directing inlet air into and through the waste water in vessel 14, an outlet duct 26, 28 for conducting air departing from the waste water collected in reaction vessel 14, oxygen sensing means 60 and second means 72, 70 for conducting air from the outlet duct to the oxygen sensing means for measuring the residual oxygen in this air. The initial oxygen content of the air may be measured by operating valve 42 to connect lines 44 and 70 to allow flow of inlet air to the sensor. The flow of inlet air through line 48 immersed in the waste water serves to adjust the temperature of the inlet air and casing 86 for the sensor is heat-insulated. A constant flow of waste water from tank 10 to vessel 14 is provided by pump 22. The output of sensor 60 may be used to control operations in tank 10.
Patent GB-1211949-A (GB)
Title: Ethylene oligomerization
Inventor: BARNETT KENNETH WAYNE
IPC: C07C1/00
Filed: 1969-06-19
Abstract: 1.211,949. Oligomerisation catalysts. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. 19 June, 1969 [21 June, 1968; 13 Jan., 1969 (2)], No. 31081/69. Heading B1E. [Also in Division C5] An oligomerisation catalyst comprises a sulphided cobalt or nickel compound on an Al 2 O 3 -containing support which may be treated with an alkyl aluminium halide or a trialkyl aluminium. Suitable Co and Ni compounds for preparing the catalysts are the halides, NiO, and cobalt acetylacetonate. A Co catalyst may contain up to 5%w sulphur and a Ni catalyst up to 20%w sulphur.
Patent GB-603996-A (GB)
Title: Improvements relating to multi-stage turbines and compressors
IPC: F01D5/06
Filed: 1945-11-20
Abstract: 603,996. Turbine and compressor rotors. BAUMANN, K., and METROPOLITANVICKERS ELECTRICAL CO., Ltd. Nov. 20, 1945, Nos. 31194 and 34276. [Class 110 (iii)] The several discs of which a turbine or compressor rotor is built are formed with lateral annular projections 1b, 1c, 2c, 3b, which are embraced by flanged rings 4, 5, 14, 15. The rings are secured to the projections by radial pins 7, 8 and are united by welding material 9, 19. Clearances 6, 16 are provided between the inner flanges and the projections to permit of the thermal expansion of the rings during the welding operation. Spiders may be fixed to the end discs by the same method to carry the rotor when the discs are not mounted on a shaft.
Patent GB-604001-A (GB)
Title: Improvements in or relating to moulding materials
IPC: C08J9/26
Filed: 1945-11-20
Abstract: A composition for moulding and vulcanizing which consists of a continuous phase of a coagulum of vulcanizable natural or synthetic rubber, e.g. a copolymer of butadiene and acrylonitrile, and having dispersed therein particles of a solid leachable substance is obtained by intermixing the particulate leachable substance in a liquid mixture of rubber which is thereafter allowed to coagulate, the rubber content of the mixture being such that it constitutes 26 per cent to 58 per cent by volume of the moulded and vulcanized mass. The leachable substance may be sodium nitrate, sodium carbonate, ammonium sulphate or polyvinyl alcohol, and is of such a size as to pass a screen of 100 mesh per linear inch.  In an example 570 grams of finely divided sodium nitrate are added to 100 grams of rubber dissolved in a volatile solvent such as methyl ethyl ketone.  The mixture is agitated to disperse the filler and then set aside to coagulate.