baber/WOPTO huggingface dataset:
Patent GB-1255795-A (GB)
Title: Earth leakage protection devices
IPC: H02H3/33
Filed: 1968-12-05
Abstract: 1,255,795. Protective systems. SERVODAN A.S. 5 Dec., 1968 [24 April, 1968], No. 57837/68. Heading H2K. An earth leakage protective arrangement comprises a circuit-breaker 6 having its tripping device 5 connected to the secondary winding 4 of a core-balance transformer 1, the device 5 being connected to an A.C. source through a first coupling including the secondary winding 4 and through a second coupling so arranged that they normally counterbalance each other, but when the sum of the currents in the primary windings differs from zero, the couplings are differently affected and the tripping device is energized. This arrangement enables response to be obtained when a D.C. earth leakage component exists on an A.C. supply, or when the arrangement is used as a D.C. earth leakage protective arrangement. As shown, the core-balance transformer 1 has an auxiliary winding 16 connected in series with the primary winding 17 of an auxiliary transformer to the supply conductors. The secondary windings 4 and 19 are connected in series to the device 5 in such a manner that the voltages induced in them from the windings 16, 17 cancel so the arrangement may function in the usual manner due to unbalance in the A.C. currents in the primary windings of the transformer 1 as well as to unbalanced D.C. currents in the primary windings altering the coupling between the windings 16, 4, resulting in the voltage induced in winding 19 predominating and causing tripping. In Fig. 6 (not shown) the transformers are combined, the windings 16, 17 being combined to form a common winding on the central limb of a three-limb transformer. In a further arrangement, Fig. 7 (not shown), only the corebalance transformer is used, the auxiliary winding and the secondary winding both being connected to an A.C. source.
Patent GB-1375821-A (GB)
IPC: A01C15/18
Filed: 1972-12-15
Abstract: 1375821 Spreading granular material AMAZONEN-WERKE H DREYER 15 Dec 1972 [15 Dec 1971] 57935/72 Heading AID [Also in Division B8] A spreader for granular or pulverulent material comprises a frame 1 supporting a hopper 2 and which is connectable to a tractor (not shown). A bevel gear 7 driven by the drive shaft of the tractor is mounted in drive means 4 to rotate a cross-shaft 8 through bevel gear 10. Two worm conveyers 20 are driven by conical ends of the shaft 8 engaging sleeves 22 mounted on the end of worm shafts 21. A bevel gear 11 fixed on the shaft 8 drives an agitator 16 in the hopper 2 by rotating shaft 13 through bevel gear 12. In operation material from the hopper 2 flows through conduits 30 to the worm conveyers 20 and is spread via outlet apertures 31 in housings 24 onto the ground. The conveyers 20 are a push fit on bosses 9 on the drive means 4 and may be readily removed with the conduits 30 by releasing hooks 26 from lugs 27 on the hopper 2 which carry supporting cables 25. The agitator 16 may be removed upwardly from the shaft 13 and a centrifugal disc 18, shown ghosted, mounted on the shaft 13 when the agitator 16 may be replaced. Material may then flow directly from the apertures 29 onto the disc 18.
Patent GB-1440990-A (GB)
Title: Firefighting equipment
IPC: A62C3/10
Filed: 1973-12-14
Abstract: 1440990 Fire fighting equipment SIMON ENG DUDLEY Ltd 9 Dec 1974 [14 Dec 1973] 58143/73 Heading A5A Equipment for fire fighting on or in the region of a structure e.g. on an oil tanker comprises at least one unit fixedly mounted on the structure, the unit comprising a fire fighting monitor 11 pivotally attached to a boom 18 and connected via hose 12 to a tank 13 for fire-fighting medium, a pump 25 for pumping the medium from 13 to 11, the pump 25 being driven by an internal combustion engine 22 with an adjacent fuel tank 23, wherein a radio receiver is provided to start engine 22 in response to the reception of a radio signal. A hydraulic motor, driven by hydraulic pump 25 adjusts the altitude and spray pattern of the monitor 11. The boom is raised or lowered by means of a hydraulic double acting piston and cylinder 21. The position of the boom and monitor and the flow pattern created by the latter may also be controlled via signals received by radio receiver 30.
Patent GB-1412368-A (GB)
Title: Method of providing contact for rails
IPC: E01B29/24
Filed: 1973-12-19
Abstract: 1412368 Electric couplings ELEKTROTHERMIT GmbH 19 Dec 1973 [19 Dec 1972] 58894/73 Heading H2E [Also in Division B3] A contact for supplying traction current to rails is made of a perforated steel plate 3, which is placed at right angles to the rails and in the gap between two of them. The rails are joined together and to the contact by aluminothermic fusion welding, molten metal passing down the holes 4 in the half moulds 2. The contact may be tinned after welding. Cable lugs can be bolted to the contact and copper or tinned copper rings (9, Fig. 4, not shown) placed between contact and lug to increase area of contact.
Patent GB-1208918-A (GB)
Title: Process for stabilising 1:1:1-trichlorethane and stabiliser compositions therefor
Inventor: RICHTZENHAIN HERMANN
IPC: C07C17/42
Filed: 1967-12-29
Abstract: 1,208,918. Stabilization of 1,1,1-trichloroethane. DYNAMIT NOBEL A.G. 29 Dec., 1967 [31 Dec., 1966], No. 59176/67. Addition to 1,030,438. Heading C2C. [Also in Division C5] 1:1:1-Trichloroethane is stabilized by addition of an organic nitrile, a C 1-4  alkylmononitrate, 1,4-dioxan and/or an aliphatic diamine or higher polyamine. The composition may also contain nitromethane and/or a C 1-5  alcohol. The mononitrate is preferably isopropyl, methyl, ethyl or 2-ethoxyethyl nitrate, the nitrile is preferably acetonitrile, the diamine is preferably ethylene diamine and the alcohol is preferably t-butanol. Reference has been directed by the Comptroller to Specification 1,052,086.
Patent GB-1450408-A (GB)
Title: Method of reducing disturbance in the exhaust from a recoilless  launcher
IPC: F41A1/10
Filed: 1973-12-21
Abstract: 1450408 Launching projectiles SOC NATIONALE INDUSTRIELLE AEROSPATIALE 21 Dec 1973 [8 Feb 1973] 59413/73 Addition to 1313898 Heading F3C A method of recoillessly launching a projectile 12 from a tube 13 and minimizing the disturbance caused by the exhaust gases from a propellant charge 15, comprises arranging for a mass 14 of inert particulate material, e.g. lead shot or sand, to be expelled from the rear of the tube by the pressure of the propellant gases before the projectile emerges from the tube. The projectile thereby emerges from the tube when the high pressure in the tube has fallen to a relatively low value following expulsion of the inert material and, thus, the projectile is not subjected to sudden perturbations at the start of its trajectory. The expelled inert particles are concentrated along the tube axis and so reduce the lateral dispersion of the propellant gases that detrimental detonation, smoke and flame effects in the forward direction are substantially eliminated.
Patent GB-1453038-A (GB)
Title: Comparator circuitry
IPC: G06G7/25
Filed: 1973-12-21
Abstract: 1453038 Voltage comparator circuits RCA CORPORATION 21 Dec 1973 [2 Jan 1973] 59559/73 Heading H3T In a dead zone comparator having a first voltage comparator 10 for developing a set signal whenever an input signal T5 is more positive than a first reference level T3 and a second voltage comparator 20 for developing a reset signal whenever the input signal T5 is more negative than a second reference level T4 the set and reset signals are combined by circuitry 33, 34 and applied via a single bus 35 to switch a crosscoupled transistor bi-stable circuit 40 from one state to the other and output voltage limiting circuitry 31, 32, 33, the combining circuitry 33, 34 and input circuitry 36-38 to the bi-stable co-operate to eliminate any attempt to switch the bi-stable into each of its stable states at the same time should the polarity of the first reference level at times change with respect to the second reference level. Diodes 31 and 32 clamp the output of the voltage comparator 10 so as to prevent saturation of a transistor 12. Similarly the base-emitter junction of transistor 33 changes the output from the comparator 20 and prevents saturation of a transistor 22. A diode 37 prevents the collector-base junction of the transistor 42 from being forward biased during the application of a set signal to the bi-stable avoiding a spurious reset signal being simultaneously applied to the bi-stable 40. The diode 37 may be replaced with a resistor. The output from the bi-stable 40 is fed to a wave shaping voltage comparator 50 and when the base voltage to a transistor 52 is more positive than that applied to the base of a transistor 51 the output to the base of a transistor 60 goes negative and is clamped by diodes 57 and 58 which prevent saturation of the transistor 52. The output from the transistor 60 is coupled via amplifier transsistors 61, 62 to an output transistor 63 which may comprise parallel connected transistors the output T7 of which may be coupled to the gate of a SCR (not shown). The collector-emitter paths of transistors 65, 66 and 67 provide paths for discharging stored base-emitter charges from the transistors 61, 62, 63 when they turn off. The comparator 50 eliminates ambiguities in the output signal at T7 due to a mixture of SET or RESET signal components. The comparator circuit can be in integrated circuit form. Current mirror circuits 16, 26 and 54 form active loads for the comparators 10, 20 and 50. The diodes shown may be formed from transistors having their collector and base electrodes directly coupled like transistor 27.
Patent GB-1223925-A (GB)
Title: Improvements in or relating to fuel supply devices for cold starting of internal combustion engines
Inventor: ROSS GRAY ERNEST DONALD
IPC: F02M1/16
Filed: 1968-12-17
Abstract: 1,223,925. Priming. ZENITH CARBURETTER CO. Ltd. Dec.3, 1969 [Dec.17, 1968], No.59964/68. Heading F1K . A device for supplying fuel to an internalcombustion engine for starting the engine from cold comprises a chamber 15 bounded on one side by a movable wall 17 thermo-sensitively controlled means 21 acting on the movable wall to permit enlargement of the volume of the chamber with decrease of temperature, means 10 to supply fuel to the chamber automatically as its volume increases, through a non-return valve 31, passage means 33 to connect the chamber to the induction system 35 of an engine, means dependent on the initiation of an engine starting operation to produce a thrust on the movable wall acting to move it so as to reduce the volume of the chamber and expel fuel therefrom into the engine induction system and valve means 38, 39 acting to close the passage means when the movable wall during its fuel expelling movement reaches a predetermined position. As shown when, after it has cooled, the engine is restarted the fuel pump generates pressure in the chamber 16 to displace the diaphragm 17 and force fuel from the chamber 15 into the induction system.
Patent GB-1373030-A (GB)
Title: Optical filter layer
IPC: C09B23/00
Filed: 1972-12-29
Abstract: 1373030 Optical filter CIBA-GEIGY AG 29 Dec 1972 [31 Dec 1971] 60017/72 Heading G2J [Also in Division C3] An optical filter layer comprises a substrate of polyvinyl alcohol (PVA) which contains a filter dyestuff of the formula: in which R 1  and R 2  each denote hydrogen, or an alkyl group with at most 4 carbon atoms, or a halogen; R3 and R4 each denote a hydrocarbon radicle, which may be further substituted; and X 1  is an anion. The PVA is made by saponifying polyvinyl acetate, and the dye e.g. in solution in methanol, is stirred into an aqueous solution of the PVA, and a gelling agent, e.g. borax, is included. The filter may be self-supporting or coated on to a transparent carrier, or located between two such carriers, or a cover of PVA containing a U.V. absorber may be applied to the filter. The carrier may comprise an organic material, e.g. cellulose triacetate or a polyester. Various embodiments of the dyestuff are described, in which R 3  and R 4  may be alkyl groups containing not more than 18 C atoms, or a lower hydroxyalkyl group or an carboxyalkyl group, and X 1  is a chloride, bromide, iodide or perchlorate ion. The filter is used in subtractive colour copying.
Patent GB-1245134-A (GB)
Title: Coupling for connecting a receiving container with a source of pressure fluid, for example, a pressurized recharging tank
IPC: F23Q2/52
Filed: 1968-12-18
Abstract: 1,245,134. Pipe &c. couplings. FLAMINAIRE MARCEL QUERCIA. 18 Dec., 1968 [9 Jan., 1968], No. 60228/68. Heading F2G. A coupling for connecting, e.g. a rechangeable reservoir 1 with a pressurized recharging feed tank comprises coupling members 2, 4 respectively formed with socket and spigot parts which, as shown, may be screw-threadedly engaged and including valves 3, 5 movable axially of and from seats in the members against the force of associated compression springs 6, 7, the spring 6 being weaker than the spring 7. The member 2 has an abutment 10 adapted to engage the valve 3 and limit axial movement of the valve away from the seat 11 to an extent less than that required to fully compress the spring 6. There are associated with the valves, elements 8, 9 which interengage so that the valve 3 is first displaced from the seat 11 and into engagement with the abutment 10 and thereafter the valve 5 is displaced from the seat thereof to allow fluid under pressure to pass from the tank to the reservoir. As shown, an annular member 16 having a cutting edge 16a which penetrates into the shoulder 10 to produce a fluid seal is formed with a screw-driver slot 17 and a sealing washer 19 provides a seat between the members 2, 4. The valve 3 has grooves 14, 15 which allow fluid to pass the valve, or alternatively one or more ribs or grooves is provided on the shoulder 10 or face 3a of the valve. During uncoupling of the members, the valve 3 being still open, gas escapes from the reservoir through slot 20 in member 4 to prevent excess pressure in the reservoir.
Patent GB-1352530-A (GB)
Title: Process for producing acyloxydodecatrienes
IPC: C07C69/00
Filed: 1971-12-29
Abstract: 1352530 Acyloxydodecatrienes MITSUBISHI CHEMICAL INDUSTRIES Ltd 29 Dec 1971 [30 Dec 1970 29 March 1971] 60581/71 Heading C2C Acyloxydodecatrienes are prepared by reacting 1,3,7-octatriene or lower alkyl (1-4 C) substituted 1,3,7-octatrienes, butadiene, and a carboxylic acid in the presence of a catalyst comprising a divalent palladium compound selected from organic acid salts of palladium (II), chelate complexes of palladium (II) and palladium nitrate. 1,3,7-octatriene and 2,7- dimethyl-1,3,7-octatriene with acetic, propionic, cyclohexyl, and benzoic acids with catalysts such as palladium acetate, propionate and benzoate, palladium acetylacetonate and a palladium acetoacetic, ester complex may be used. The reaction may be in an inert solvent and the 1,3,7-octatriene may be prepared by dimerization of butadiene or isoprene. Examples describe the preparation of 1-acetoxy-2,7,11- dodecatriene and 3 - acetoxy - 1,7,11 - dodecatriene, 1 - acetoxy - 6,11 - dimethyl - 2,7,11- dodecatriene and 3 - acetoxy - 6,11 - dimethyl- 1,7,11 - dodecatriene, 1 - propionyloxy - 2,7,11- dodecatriene and 3 - propionyloxy - 1,7,11- dodecatriene, 1 - benzoyl - 2,7,11 - dodecatriene and 3-benzoyloxy-1,7,11-dodecatriene.
Patent GB-1286686-A (GB)
Title: Polytetrafluoroethylene dispersions for making electrical resistance materials and process for their manufacture
IPC: C08L27/00
Filed: 1969-12-16
Abstract: 1286686 Polytetrafluoroethylene dispersions FARBWERKE HOECHST AG 16 Dec 1969 [16 Dec 1968] 61280/69 Heading C3P [Also in Division D1] A dispersion comprising (a) from 10% to 30% by weight of polytetrafluoroethylene; (b) from 10% to 30% by weight of an electrically conductive pigment; (c) from 2% to 20% by weight of a dispersing agent capable of dispersing component (a) and component (b) in component (d); (d) from 5% to 50% by weight of a di- or polyhydric alcohol or a mixture of di- or polyhydric alcohols; and (e) from 0% to 70% by weight of water may be prepared by mixing (A) an initial polytetrafluoroethyiene dispersion whose liquid phase comprises water or one or more di- or polyhydric alcohols or a mixture of water and such alcohols and a first dispersing agent and (B) a paste of the pigment and water or one or more di- or polyhydric alcohols or a mixture of water and such alcohols and, optionally, a dispersing agent which may be the same as the first dispersing agent or may be different. In the examples the dispersions contain graphite dust, carbon black, ethylene glycol, water, sodium pentachlorophenolate, condensation product of nonyl phenol and ethylene glycol, polytetrafluoroethyiene emulsion, condensation product of nonyl phenol and ethylene oxide, disodium sulphonate of dinaphthyl-methane, sulphate waste liquor powder, hexanetriol and sorbitol.
Patent GB-720932-A (GB)
IPC: F25B49/02
Abstract: 720,932. Automatic refrigerator control systems. GENERAL ELECTRIC CO. April 28, 1953 [May 8, 1952], No. 11718/53. Drawings to Specification. Class 38 (4). [Also in Group XIII] A negative-temperature-coefficient resistor responsive to the condenser temperature is connected in series with the fan motor to control its speed and hence the cooling of the condenser.
Patent GB-726627-A (GB)
Abstract: 726,627. Gyroscopic apparatus. SPERRY CORPORATION. - July 30, 1953 [Aug. 2, 1952], No. 21148/53. Class 97 (3). A gyroscopic instrument comprises a rotor bearing frame mounted for angular movement about two mutually perpendicular axes in a gimbal ring, normally ineffective means for retarding or preventing rotation of the gimbal ring about its axis when the rotor is decelerating, and an indicator for indicating that the instrument is inoperative which indicator is operated at the same time as the rotation retarding or preventing means. The attitude gyro shown in Fig. 1 has a rotor 20 which can spin about a normally vertical axis in a case 21 pivoted about a horizontal axis in a gimbal ring 23 having a shaft 26 pivoted about a perpendicular axis in a housing 10 having a window 13 in its front wall. Visible in this window is a horizon bar 14 operated as disclosed in Specification 643,613, and a pitch indicator also as disclosed in that Specification. When the rotor is not spinning an " OF " flag carried by an arm 32 is visible in the window, this arm being mounted on one end of a rotatable arm 31 which carries a slotted lever 42 engaged by a pin 43 on the armature of a motor 36; the flag is held in this position by a spring connected to one end of the motor shaft. With the flag visible in the window, the free end of a spring 46 on arm 31 lies in the path of a pin 28 on gimbal 23 to retard rotation of this gimbal about its axis and thus aid in the prevention of gimbal lock. The flag operating motor 36 and the rotor spinning motor are both energized by closure of a single switch and the motor 36 then rotates arm 31 to a limited extent defined by the pin and slot connection 42, 43 to remove the free end of spring 46 from the path of pin 28 and to remove the flag from view. Specification 625,415 also is referred to.
Patent GB-2000539-A (GB)
Title: Mining machine cutter drum
IPC: E21C25/10
Filed: 1978-06-22
Abstract: A cutting drum for a mining machine provided with a helical formation extending around the exterior of the body to the peripheral edges of which cutting tools may be secured the radial depth of the spiral channel enclosed between adjacent turning of the helical formation increases from one end towards the other end of the body. <IMAGE>
Patent GB-2027455-A (GB)
Title: Colouring water-swellable cellulose
IPC: D06P3/60
Filed: 1978-07-10
Abstract: Water-swellable cellulosic materials, either alone or blended with synthetic materials, are coloured (dyed or printed) by swelling the cellulosic material with water and applying a solution of the dye in a dye-solvent to the swollen material and removing the solvent to precipitate the dye in the cellulosic material. The process is carried out under neutral or slightly acidic conditions obtained by prior adjustment of the pH of the fabric e.g. by treatment with acetic acid followed by washing and drying. Azoic dyes containing potentially hydrolysable linkages are used on a blend of polyester 67% and cotton 33%.
Patent GB-2002645-A (GB)
Title: Machine for mixing and distributing loose materials, such as animal feedstuffs
IPC: B01F29/64
Filed: 1978-08-10
Abstract: A machine for mixing loose materials such as animal feedstuffs and distributing the mixed product comprises a rotary drum 4 open at one end 4a and mounted on a frame which can be self propelled or drawn as a trailer. The drum 4 is generally cylindrical, and is rotatable about an axis x inclined downwardly at a shallow angle from an open end 4a. Inwardly from the inside of the walls of the drum project helical mixing blades 25 and centrally through the drum extends a coaxial shaft 60 with a surrounding helical screw 61 which can be held fixed with respect to the frame as the drum rotates, to promote mixing, or, allowed to rotate with the drum to promote discharge of mixed material from the drum. The materials to be mixed are fed to and discharged from the open end 4a by way of a screw conveyor 12, 18. <IMAGE>
Patent GB-2003091-A (GB)
Title: Printing apparatus
IPC: D06B11/00
Filed: 1978-08-25
Abstract: Printing apparatus is provided for use in dyeing carpet yarn and has a print roller disposed for engaging a warp sheet. The roller comprises a plurality of printing elements (34) having print heads (44) which define the surface of the roller. Each head (44) is resiliently mounted for radial movement relative to the axis of the roller and is rigidly connected to a respective follower (54). Each follower (54) cooperates with a guide track (52), presented by a respective control member (36) so as to hold the associated head in a raised print position or not in dependence upon sequential radial movements of the head (44). <IMAGE>
Patent GB-2162927-A (GB)
Title: A solid rocket propulsion system
Inventor: STRECKER DR RUDIGER
IPC: F02K9/34
Filed: 1978-10-24
Abstract: A rocket propulsion system with substantial omission from the internal wall of the combustion chamber of the conventional insulating layer is obtained by pouring solid propellant I directly into the combustion chamber which is not insulated in the cylindrical body thereof. The internal wall of the chamber may be provided with an adhesive layer and an insulating cap II may be provided at the head of the chamber. Insulation III may be subsequently applied to the propellant. <IMAGE>
Patent GB-2005809-A (GB)
Title: Control valve and electrical and hydraulic control system
IPC: E21B33/035
Filed: 1978-10-25
Abstract: A control valve and a multiple control system therefor for controlling a plurality of remotely positioned hydraulically actuated underwater devices. The slidably movable valve member 16 is acted on by first and second equal size pilot pistons 18 and 20 supplied with operating fluid through first and second pilot ports 22 and 24 respectively, for moving the valve member to either an open or closed position. Third and fourth unequal size pilot pistons 26 and 28 supplied with operating fluid through third and fourth pilot ports 30 and 32 respectively are also operative for moving the valve member to either an open or closed position. The control valve may be operated in an electro- hydraulic control mode by the use of electrically actuated valves controlling the supply of fluid to the first and second ports 22 and 24. in addition, the control valve can be operated in a hydraulic mode by hydraulically controlling the supply of fluid to the third and fourth pilot ports 30 and 32. <IMAGE>
Patent GB-2009159-A (GB)
Title: 3'-Methoxyflavylium derivatives
IPC: A61K31/70
Filed: 1978-11-17
Abstract: Compounds of the formula   <IMAGE> wherein R is H or OCH3, R' is an ose radical, e.g. glucosyl, and X is a non- toxic anion, which are useful in the treatment of atheroma and angiopathies.