baber/WOPTO huggingface dataset:
Patent GB-972007-A (GB)
Title: Electrically conductive resinous material and production thereof
IPC: H01B3/30
Filed: 1963-04-09
Abstract: A process for the production of an electrically conductive resinous material comprises reacting at least one diamine of the formula H2N-R1-NH2 where R1 is a divalent radical containing at least 2 carbon atoms, the two amino groups of said diamine each being attached to separate carbon atoms of said divalent radical, with at least one tetra carboxylic acid dianhydride of the formula <FORM:0972007/C3/1> where R is a tetravalent radical containing at least 2 carbon atoms, no more than two carbonyl groups of said dianhydride being attached to any one carbon atom of said tetravalent radical, at a temperature of up to 175 DEG C., in a solvent for at least one of the reactants, said solvent also being inert to the reactants under the reaction conditions employed, so as to form a polyamide-acid having an inherent viscosity of at least 0.1, mixing conductive carbon black particles with the polyamide-acid to form a shapeable polymeric composition having the carbon black particles uniformly distributed therein, said particles constituting from 10 to 90% by weight of the composition, and, in either order, shaping the composition into a shaped article, and treating the polyamide-acid composition to effect ring closure of the polyamide-acid therein and thus convert it to polyamide. Many reactants and reaction solvents are specified. Examples are given. Specifications 903,271 and 903,272 are referred to.
Patent GB-141732-A (GB)
IPC: H03C1/22
Abstract: 141,732. Western Electric Co., (Assignees of Bijl, H. J. van der). Aug. 21, 1915, Convention date]. Wireless telephony and telegraphy.-High frequency oscillations are modulated in accordance with low-frequency signals by impressing both potential variations in series on the grid circuit of a thermionic valve, the output circuit of which is coupled to the transmitting-aerial or to a wire conductor. The plate circuit of the valve 2 includes a source 8 shunted by a condenser 9 and is coupled to the transmitting circuit by the transformer 19. The grid circuit of the valve comprises a secondary coil, coupled to the circuit of the high-frequency generator 14, and an adjustable portion of a resistance 10 connected across the secondary of a. transformer 17. The microphone 15 (or an interrupter and key) is in the primary circuit of the. transformer 17. A battery 7 maintains the grid normally at a negative potential relatively to the filament. The high-frequency oscillations are amplified by the valve, and the degree of amplification is determined by the slope of the valve characteristic. This slope varies with the grid potential and therefore with the potential applied by the transformer 17. Preferably the working portion of the characteristic is of parabolic shape, thus giving a slope (or amplification) proportional to the abscissa (or grid potential). The potential applied in the grid circuit bv the signal currents should be large compared with that applied by the high-frequency source, preferably from three to ten times as large.
Patent GB-299402-A (GB)
Title: Improvements in or relating to exploring devices for use in television, photo-telegraphy and like systems
IPC: H04N3/10
Filed: 1927-05-26
Abstract: 299,402. Baird, J. L., and Baird Television Development Co., Ltd. May 26, 1927. Television. - An exploring-device for television, phototelegraphy, and the like comprises a screen made of a set of tubes 10 arranged side by side and containing liquid, a pump 15 for circulating the liquid through the tubes, and a float 16 which is circulated with the liquid and provides a discontinuity in the liquid. The liquid is opaque and the float, which may be a bubble of gas, is transparent so that as the bubble traverses the tubes, which are arranged in series, the object is exposed by light passing through the bubble. A plurality of independent sets of tubes may be employed. At the receiver a plurality of insulated electric conductors communicate with the interior of the tubes, which contain conducting liquid, and a commutator applies electric potential in accordance with the received signal to each of the conductors when its end in the tube is situated in the bubble, so that a gas discharge, depending on the strength of the received signal, is produced (Fig. 2, not shown)
Patent GB-702688-A (GB)
Title: Improvements in means for loading lorries or other vehicles with coal or other material from hoppers
Inventor: SMITH WALTER ARTHUR
IPC: B65G69/00
Filed: 1951-06-15
Abstract: 702,688. Endless conveyers: loading vehicles. CHARROLD, Ltd. June 16, 1952. [June 15, 1951], No. 14291/51. Classes 78 (1) and 78 (4) Means for loading vehicles comprises a conveyer on to which material from a hopper or like source of supply may be discharged and from which said material may be discharged into a vehicle or into containers thereon, said conveyer forming part of an assembly mounted on a supporting structure beneath which a vehicle to be loaded can be disposed, said assembly being adapted to be moved over the vehicle whereby the latter can readily be fully loaded without changing its position. As shown, material from a hopper 2 supported by a stand 1 is fed through an outlet 3 on to an endless belt 11 'having its frame 10 carried by a carriage 6 suspended by wheels 15 from rails 5. The belt 11 passes round terminal rollers 18, 19, the roller 18 being driven by a motor 21 through a clutch 22, gear box 23 and belt-andpully gearing 24, 25, 26. When a vehicle is to be filled, it is backed under the conveyer as shown in Fig. 1 until the discharge end of the conveyer is over the front end of the vehicle, and the conveyer is then driven. As the front of the vehicle fills up the carriage 6 is moved rearwardly by hand-operation of a chain 33 passing over a pulley 32 on a shaft 31, another pulley 34 on this shaft engaging a chain 35 connected at its ends to a plate 12 secured to a member 6 of the carriage. In a modification, Fig. 4 (not shown) a shoot is pivotally mounted at the discharge end of the frame 10 whereby the material may be loaded into sacks or containers on the vehicle. A weighing mechanism may be provided on the conveyer for checking the weight of material fed into each sack, and for cutting-out the conveyer driving motor when material to the required weight has been discharged into the sack.
Patent GB-735142-A (GB)
Title: Improvements in and relating to dynamo electric machines
Inventor: HORSLEY WILLIAM DOUGLASS
IPC: H02K3/24
Filed: 1953-05-21
Abstract: 735,142. Cooling dynamo-electric machines. PARSONS & CO., Ltd., C. A. May 18, 1954 [May 21, 1953], No. 14350/53. Class 35. In a rotor, at least the slot portions of the conductors are of dumb-bell section and are apertured radially for the passage of cooling fluid. The slot-conductors b which may be of copper or aluminium, are arranged as shown in Fig. 1 to provide axial ducts and radial passages are provided at intervals to permit gas to enter them from the sub-slots g and where desired to pass to the air-gap. The end windings may be of similar section or be as shown in Fig. 3, whereby gas entering axially at k can then flow first radially outwards in ducts in packing members m and then circumferentially through the V-grooves in the conductor sides.
Patent GB-582641-A (GB)
Title: New sizing compositions
IPC: D06M11/155
Filed: 1944-07-28
Abstract: A sizing composition comprises an aqueous solution or dispersion of an hydroxylated polyvinyl resin and barium chloride. The resins specified are partially saponified polyvinyl acetates, propionates, glycollic acid esters, formates and lactates; partial ethers with glycol, glycollic acid, methyl and ethyl alcohols; partial acetal, formal, glyoxal, propional and butyral; partial ethyl methyl butal. The composition may be applied to yarns, filaments and films of superpolyamides, superpolyesters, vinyl chloride-vinyl acetate interpolymers, polymethyl methacrylate, polyethyl methacrylate, chlorinated polyvinyl chloride, high molecular weight ethylene polymers, vinyl chloride-vinylidene chloride copolymers, acrylonitrile polymers and copolymers. Specifications 461,236 and 461,237 and U.S.A. Specification 2,071,250 are referred to.
Patent GB-959268-A (GB)
Title: Digital computer
IPC: G06F11/00
Filed: 1963-04-11
Abstract: 959,268. Curve tracking. LICENTIA PATENT - VERWALTUNGS - G. m. b. H. April 11, 1963 [April 13, 1962], No. 14554/63. Addition to 953,922. Drawings to Specification. Heading G4A. Additional apparatus is provided in the computor of the parent Specification in order to trace elliptical, hyperbolic and parabolic curves. The apparatus generates co-ordinates according to formalae given in the Specification.
Patent GB-679516-A (GB)
Title: Improvements in or relating to the starting and operation of internal-combustion engines
IPC: F02N19/04
Filed: 1950-06-12
Abstract: 679,516. Cylinders; cooling; starting. DUFAY, R. June 12, 1950 [July 1, 1949], No. 14591/50. Classes 7(ii), 7(iii) and 7(v) In a starting and operating means for an internal-combustion engine comprising a carburetter 5 and an auxiliary combustion chamber 9 communicating freely with cylinder 1 and fitted with a sparking plug and a heavy oil injector 8, the chamber 9 comprises an elongated body one end of which is connected to the engine cylinder 1, whilst the other end receives the injector 8, the jet from which is directed longitudinally along the chamber. The inner end of each chamber 9 is in the form of bi-conical nozzle or diffuser and the outer surface of the chamber incorporates cooling fins 18 dimensioned so that the injector may remain cold, the diffuser hot and the sparking plug at an intermediate temperature; the injector is additionally cooled by having a sleeve inserted between itself and the injector. Where it is desired to convert a petrol engine to a diesel engine the combustion chamber 9 is screwed into the sparking plug orifice; in the case of overhead sparking plug engines the diffuser may terminate in a perforated wall. Each cylinder 1 is provided at starting with petrol/air mixture supplied to the :intake manifold 2 in the usual way from an air intake 3 having a choke 4 and connected to the carburretter 5. In operation, the choke 4 is closed and some of the petrol/air mixture from the cylinder enters the chamber 9 where it is ignited by the sparking-plug, and when the chamber is sufficiently heated the petrol supply is cut off and the engine speed decreases and the pressure rises, whereby a regulator 7 brings the fuel pump 6 into operation so that the sparking plug now ignites the oil injected into the outer extremity of the chamber 9 by the injector 8. When the chamber reaches normal operating temperature the sparking plug is disconnected and. the engine functions by compression ignition. The sparking plug also permits warm starting or idling on heavy oil.
Patent GB-545833-A (GB)
Title: Improvements in or relating to air conditioners
IPC: F24F6/04
Filed: 1940-09-27
Abstract: 545,833. Unit air conditioner. ELLIS, H. S., and NEWHAVEN ENGINEERING CO., Ltd. Sept. 27, 1940, No. 14628. [Class 137] [Also in Group XI] A portable unit apparatus for conditioning air by heating, moistening, filtering and disinfecting or perfuming, comprises a casing 1 in which is mounted a fan 6 driven by an electric motor 7 and by which air is drawn through a filter 2 and discharged past a perforated tube 10 containing a wick 9 saturated with the disinfectant or perfume and through a resistance heater 13 and louvres 4 in a detachable frame 5. Spare wicks 91 and tubes 101 are housed in containers 12. The air is moistened by a steam jet 15 fed from a boiler 16 provided with an immersion heater 17. Separate switches 21, 22, 23 control the current supplied to fan, heater,.and immersion heater, so that two or more fan speeds and various heater temperatures may be provided. The resistance wire in the heater may be mounted on insulators 14 supported at each end on spindles 24, the upper msulator being fixed to the spindles and the lower one a loose fit, being urged away from the upper insulator by springs 25 to take up the slack in the resistance wire 13.
Patent GB-292758-A (GB)
Title: Improvements in or relating to apparatus for rarefying gases
IPC: F04F5/08
Filed: 1927-05-31
Abstract: 292,758. Boving, J. O. May 31, 1927. Aspirating-apparatus, ejector.-In hydraulic apparatus for rarefying gases of the kind described in Specification 249,654, the gas space at the upper ends of the supply and discharge conduits is dispensed with and the aspirating device E is arranged at a throat in the upper part of the discharge conduit C, Fig. 1, or at the junction of the supply and discharge conduits B, C, Fig. 4, where the velocity of the water and the height of the water column maintain the required vacuum in a main F with which the device E communicates. The conduit C is formed as a venturi channel. The device E comprises a number of hollow members of stream-line form provided with small holes through the side walls.
Patent GB-696360-A (GB)
Title: Improvements in and relating to quartz-to-metal seals
IPC: C03C27/04
Filed: 1952-06-12
Abstract: 696,360. Quartz-metal seals. BRITISH THOMSON-HOUSTON CO., Ltd. June 12, 1952 [June 19, 1951], No. 14844/52. Class 36. In sealing a refractory metal conductor 2 through a quartz tube, the conductor is hermetically united to a refractory metal sealing disc 4, on either side of which is placed one of a pair of annular vitreous wafers 8 having a lower softening temperature than quartz and a coefficient of expansion between that of quartz and that of the metal of disc 4, the ends of the conductor are mounted in quartz tubes 14, 15 having flared inner ends 16, 17 so that the peripheries of the flares, the wafers and the disc are juxtaposed, the peripheries of the flares are softened by heat while a non-oxidizing atmosphere is maintained about the disc, and the flares are moved together so that they are united to each other and to the wafers, while the wafers are united to the disc. The conductor 2, which may be of tungsten, may be enclosed in molybdenum foil 3. The disc 4, which may be cupshaped and have a tapered sealing edge 10, is sealed to the conductor 2 by a brazed platinum joint 7, as disclosed in Specification 663,309. The thicker portions of disc 4 and the joint 7 are covered with molybdenum foils, 9, 11, 12, 13, to prevent the glass wafers 8 adhering thereto during sealing. A quartz ring 18 is united with flare 17 and overlaps the periphery of flare 16 when the parts are assembled. An inert gas such as nitrogen is fed through tubes 14 and 15 to the interior of the assembly and ring 18 is then heated to unite it with flare 16. The assembly is then evacuated and the flares 16 and 17 softened. This heating also softens discs 8, which unite with the sealing edge 10 as the tubes 14, 15 are moved together, the flares 16, 17 being also united. The heating is continued to collapse the tubes on to the foilcovered conductor 2.
Patent GB-239939-A (GB)
Title: Improvements relating to means for supplying current to radio tubes and the like
IPC: H02M1/14
Filed: 1924-06-19
Abstract: 239,939. Byrne, E. L. W., (Gage, E. G.). June 19, 1924. Thermionic valve circuits.-Pulsating currents are converted into steady continuous currents suitable for heating the filaments of electron tubes or like applications by connecting a storage battery across the source of pulsating current and connecting the load to the battery through an inductance of high value compared with the inductance of the battery charging circuit. In the arrangement shown, alternating current, brought to the required voltage by a transformer 1, is converted into unidirectional pulsating current by a rectifier 2 and supplied to a storage battery 3. An inductance 4 is provided in the discharge circuit of the battery to impede variable current from the rectifier circuit. Slight variations in the comparatively steady current in the discharge circuit of the battery 3 may be further reduced by arranging an additional battery 5 and. inductance 7 as shown, the filament 8 of the electron tube being supplied with substantially steady current through the usual variable resistance 9. The rectifier may be shunted by a condenser 12. The parts may be arranged as a portable unit in a box 25, Fig. 5, the inductance coils 4, 7 and the windings of the transformer 1 being disposed at right-angles to each other to prevent mutual inductive effects. The primary winding of the transformer is connected through a fuse plug on the cover of the box to a plug .for connection with an ordinary lighting socket in an alternating current supply system. In order to maintain the battery voltage constant, the arrangement is such that a current in excess of that normally required for charging is supplied to the battery by the rectifier.
Patent GB-380779-A (GB)
Title: Improvements in apparatus and methods for drying printed webs or sheets, for instance paper or fabric printed with colours
IPC: B41F23/04
Filed: 1931-05-20
Abstract: 380,779. Drying printed webs and sheets. KADUS-WERK GES., Neustadt, Schwarzwald, Germany. May 20, 1931, No. 14922. Convention date, July 29, 1930. [Class 100 (ii).] The Figure shows the combination of drying apparatus, comprising alternate blowing and sucking nozzles arranged transversely over the web to be dried, with a rotary printing machine. The drying chambers 73, 74 through which the web passes from the first printing roller 72 to the second printing roller 75 have convex backs to keep the web smooth. If the web is to be printed once only, the drying chambers, which are hinged together at 76, are arranged as at 73<1>, 741.
Patent GB-1182356-A (GB)
Title: Novel Phosphorous-Containing Esters having Insecticidal and Miticidal Properties
IPC: C07F9/6533
Filed: 1967-03-31
Abstract: 1,182,356. Insecticides/miticides containing phosphorus esters. YOSHITOMI PHARMACEUTICAL INDUSTRIES Ltd. 31 March, 1967 [5 April, 1966; 15 Nov., 1966; 16 Nov., 1966], No. 14944/67. Heading A5E. [Also in Division C2] An insecticidal and miticidal composition contains as active ingredient a compound of the formula: wherein X is H, halogen e.g. Cl or Br, or an alkyl group of up to 4 carbon atoms, Z is carbonyl an alkylidene group of up to 6 carbon atoms, benzylidene or cyclohexylidene, Y is O or S, Y<SP>1</SP> is O or -CH 2 -Y<SP>2</SP> in which Y<SP>2</SP> is -O- or -S- directly bonded to the - P(Y)(OR 1 )(R 2 ) radical, R<SP>1</SP> is methyl or ethyl and R<SP>2</SP> is methoxy, ethoxy or phenyl and a carrier therefor. The carrier may be a liquid or solid and a surface active agent may be present. The composition may be in the form of an emulsion, emulsifiable concentrate, wettable powder, dust, solution or bait and may also contain other insecticides or miticides, or fungicides, herbicides or fertilisers.
Patent GB-1213763-A (GB)
Title: Television conference telephone system
Inventor: KIKUCHI MASAO
IPC: H04M3/56
Filed: 1969-03-21
Abstract: 1,213,763. Automatic exchange systems; transistor amplifiers. TOKYO SHIBAURA ELECTRIC CO. Ltd. 21 March, 1969 [22 March. 1968 (2)], No. 15029/69. Heading H4K. A telephone exchange adapted to selectively interconnect, under subscriber dialling control, a plurality of substations together to form a video conference, causes a selected one of the conferring subscribers to be displayed at every substation involved. Various ways of selecting a particular subscriber for display are detailed. In one embodiment a clock driven stepping circuit causes the subscribers to be displayed cyclically. In a modification each subscriber has a button which he can depress to stop the cycle on his substation. In other embodiments each subscriber has a pushbutton which he presses when he wishes to speak. If there has been a predetermined delay as measured by a bi-stable set then reset via a delay, or as measured by a monostable circuit since the previous button was pressed, the image of a subscriber who presses his button is displayed, a chain of relays connected to form a priority arrangement selecting a subscriber if a plurality press their buttons simultaneously. In a further embodiment the image of the person speaking is automatically displayed. At each substation a transistor circuit amplifies the speech signal rectifies it, integrates it to test whether it persists for a predetermined period and compares the output of the integrator with a reference potential using a differential amplifier. If the threshold is exceeded a tone from a local signal operator is gated to line. At the exchange the tone is detected, amplified and used to operate a relay in a priority chain which selects from a plurality of simultaneously speaking subscribers. The exchange (Fig. 1, not shown) resembles an interconnection system in that only one call may be in progress but employs a central control which marks the crosspoints (relays) to be operated, and a register which receives dial signals designating a plurality of wanted subscribers from a single calling subscriber and after translation forwards them to the central control. Video matching circuit.-Fig. 2 shows the video matching and amplifier circuit which receives a video input at 70 and supplies n separate outputs 71o to 71n. The input impedance of the differential amplifier comprising transistors 93 and 94 is selected to equal the output impedance of the input line. The cascade connected transistors 95 to 97 offer a low output impedance which can be individually matched by resistors 90o to 90n to the input impedance of the output lines.
Patent GB-1151060-A (GB)
Title: Wheel Element with Brake Disc, more especially for Rail Vehicles.
IPC: F16D65/12
Filed: 1968-03-28
Abstract: 1,151,060. Vehicle wheels. KNORRBREMSE G.m.b.H. 28 March, 1968 [7 April, 1967], No. 15072/68. Heading B7C. [Also in Division F2] Discs of friction brake material 1 are secured to both sides of wheels, e.g. for rail vehicles, by nuts of friction material co-operating with a spring-washer 5. The nuts are screwed on to a stud 4 (passing through slotted spring bushes 2 in the wheel) and locked by a pin 6 passing through one of the two holes 9 in the nut and a hole 10 in the "disc", so that it is held against the wheel by tension in the cupped spring washer 5, and in the radial direction by the bushes.
Patent GB-1140419-A (GB)
Title: Improvements in and relating to the separation of gaseous mixtures
IPC: F25J3/04
Filed: 1967-04-03
Abstract: 1,140,419. Cold separation of air. LA FLEUR CORP. 3 April, 1967 [4 April, 1966], No. 15124/67. Heading F4P. Extending axially within the lower and upper ends of a binary gas mixture, e.g. air, separating column 38 are heat exchangers 76, 92 traversed by relatively warm and cold fluids of constant composition, e.g. helium, neon, hydrogen or nitrogen which add and remove heat from said lower and upper ends respectively in a continuous manner thereby effecting differential distillation; the fluid, e.g. helium, operating as a heat pump and after leaving the lower warm end of exchanger 92 is compressed at 72, cooled in exchanger 76, further cooled in an externally refrigerated exchanger 80, expanded in a turbine 86 and returned to the upper cold end of exchanger 92. Wet feed air is admitted to the column 38 at a mid point 36, liquid oxygen is withdrawn at 41, vaporized in exchangers 43, 54 in countercurrent exchange with a minor portion of warm product nitrogen and discharged as product gaseous oxygen through a line 62, whilst effluent nitrogen is passed through anexchanger coil 44 thereby sub-cooling said minor portion of nitrogen which serves as reflux. The so-warmed effluent nitrogen also traverses an exchanger 30 traversed by the feed air and is discharged through a line 48. In a modification the liquid oxygen is vaporized by the compressed helium prior to passage of said helium through the exchanger 76. Argon may be removed with the effluent nitrogen or with liquid oxygen by controlling the temperature of the helium in exchangers 76, 92.