baber/WOPTO huggingface dataset:
Patent GB-1271950-A (GB)
Title: Continuous filamentary material
Inventor: MORGAN PETER ERNEST
IPC: D01F9/14
Filed: 1968-09-04
Abstract: 1,271,950. Carbon filaments and tape containing such filaments. COURTAULDS Ltd. 3 Sept., 1969 [4 Sept., 1968], No. 41968/68. Heading C1A. A flat substantially uniform and stable assembly of substantially parallel twist-free carbon filaments is obtained by carbonizing continuous organic filamentary material in the form of a tape, wherein a tape is defined as a flat elongated band which is relatively thin compared to its width and is composed of substantially parallel twist-free continuous filaments. The filaments may be graphitized if desired. The tape width is preferably not less than 1À25 cm. and its thickness less than 0À025 mm. The organic filament used may be a cellulosic, a polyester or a polyamide material but are preferably a polyacrylonitrile. The organic filament may be first heated at a temp. within the range 200-300‹ C. in an oxidizing atmosphere and thereafter carbonized, the tape being maintained and a tension sufficient to maintain it of constant length during the low temp. heating stage. The carbonizing temp. may be not less than 1000‹ C. and the product may be graphitized by heating at not less than 2000‹ C. also in an inert atmosphere. A number of tapes formed by the above processes may be assembled so that their length is parallel to a common directed and then incorporated into a resin matrix. The warp sheet so formed may be then laminated by stacking a number of sheets together and bonding them by applying heat and pressure. In an alternative technique the tapes are wrapped on a mandrel with some degree of overlap, impregnated with resin, the cylinder being cut along its length to give a warp sheet. The above tapes may also be incorporated in other matrices e.g. metals, ceramics and glass.
Patent GB-843387-A (GB)
Title: Improved journal and bearing assembly
IPC: B61F17/08
Filed: 1958-12-30
Abstract: 843,387. Journal and bearing assembly. GENERAL MOTORS CORPORATION. Addition to 789,118. Dec. 30, 1958 [Feb. 10, 1958], No. 42005/58. Addition to 789,118. Class 12 (1). [Also in Group XXIX] In the journal and bearing assembly described in the parent Specification, the breather openings are replaced by a one-way valve 82 mounted in the cover-plate 22 of the bearing housing 16. The valve 82 comprises an annular cylindrical housing 84 provided with a bore 86 in which a tubular valve member 88 is located, the latter having a circumferential knife edge 90 which, when the valve is closed, is abutted by a circular rubber washer 92 mounted on a plunger 94 extending through the said valve member 88. One end of the plunger is guided by a bridge member 96 and the other end is secured to a cup 98 slidable in the bore 86 which is sealed by a plug 100 and a resilient wedge-type washer 102. A compression spring 104 is interposed between the cup 98 and the washer 92 forcing the latter towards the knife edge 90. When the member 88 is inserted into the housing 84 the cup 98 abuts a step 106 in the bore 86, and further movement compresses the spring 104 so that the washer 92 and the knife edge 90 are urged together at a predetermined pressure. When this pressure is exceeded by the pressure in the housing, air passes through the tubular member 88 and presses against the washer 92 to effect its release from the knife edge 90 so that the excess air escapes.
Patent GB-1373604-A (GB)
Title: Detonation of propellant cartridges especially in electrical switch gear
IPC: F42C11/04
Filed: 1972-09-11
Abstract: 1373604 Firing device BBC BROWN BOVERI & CO Ltd 11 Sept 1972 [13 Sept 1971] 42087/72 Heading F3C [Also in Division H1] A firing device for the percussive detonation of a propellant charge contained in a cartridge 8 comprises a firing pin 6 which is retained in a rest position against the force of a spring 2, by a permanent magnet 1, the latter acting on an armature 3 joined to the firing pin 6, the spring 2 operating the firing pin 6 upon a reduction in the field of the permanent magnet 1. The armature 3 is provided with a soft iron pole shoe la, and with a sleeve 3a which receives an extension 9a of a member 9 therein and is surrounded by the spring 2. The extension 9a guides the pin 6 which, upon reduction of the field of the permanent magnet 1 by supplying electric current to a coil 4 or 5, strikes a detonator cap 7 of the cartridge 8. The pin 6 is returned to the rest position shown in the drawing by explosion gas which passes through a passage 9b in the member 9.
Patent GB-1276556-A (GB)
Title: Improvements in or relating to the steering of marine vessels fitted with propulsion nozzles
Inventor: CORLETT EWAN CHRISTIAN BREW
IPC: B63H11/00
Filed: 1969-08-25
Abstract: 1276556 Propelling and steering ships HYDROCONIC Ltd 25 Aug 1970 [25 Aug 1969] 42293/69 Heading B7U A ship's screw propulsion and steering assembly comprises a propulsion screw working in a fixed nozzle 12 with a forward set of multiple rudders 13 disposed at the nozzle entry and coupled to turn together, and an after set of multiple rudders 11 disposed at the nozzle exit and also coupled to turn together. The assembly is such that the forward rudder set is put over to a steering angle less than that of the after rudder set when the vessel is in a turn going ahead.
Patent GB-1137704-A (GB)
Title: Improvements in the replenishment of containers with cold liquids
Inventor: HERBERT BRIAN KENNETH
IPC: G05D9/12
Filed: 1965-10-06
Abstract: 1,137,704. Automatic liquid level control. MULLARD Ltd. Dec. 13, 1966 [Oct. 6, 1965], No. 423 9 5/ 65. Heading G3R. The level of liquid nitrogen in a trap 1 is automatically maintained constant by replenishment from a sealed reservoir 9 having a heater 5 and a tube 6 whose remote end is opened to or closed from atmosphere by a valve 7. In the trap 1 are positioned thermistors 2, 3 having continually-energized heaters 16 see Fig. 3, the arrangement being such that when the level falls to uncover the thermistor 2 its sudden change of resistance makes a transistor 18 conductive to energize a relay coil 19 which closes the valve 7, energizes the reservoir heater 5 by closure of contacts 39 and shorts out the thermistor 2 by closure of the contacts 21. Heater 5 causes evaporation of liquid nitrogen and build-up of pressure in the reservoir 9 due to closure of the valve 7. Liquid nitrogen is thus forced through the conduit 4 to the trap 1 until the thermistor 3 is covered, the sudden change of resistance of the latter switching off the transistor 18 and de-energizing relay coil 19 to open members 7, 21, 39. The system may function using only the thermistor 2, manual changeover of a switch 20 shorting out the thermistor 3 for this operating condition. Thermistors 2, 3 are of the bead type around which is wound a tungsten wire heater and are adjustable in position by mounting them at the ends of two arms pivoted at a common point, Fig. 2 (not shown) or by mounting them in holders movable along a vertical rod. The circuit components enclosed by the broken line in Fig. 3 are used when it is desired to automatically change to a reserve reservoir when the reservoir 9 is empty. In this case resistors 35, 25 respectively constitute the heaters for the reservoir 9 and the reserve reservoir, the relay coil 19 controlling contacts 43. When the reservoir 9 is empty its heater 35 increases appreciably in resistance and switches off a transistor 22 which has hitherto been shorting out a relay coil 28. Energization of this relay changes over the switch 24 to substitute the heater 25 for the heater 35 in the control circuit. Member 25 may be replaced by a lamp to indicate when the level in reservoir 9 is low. The method and arrangement for sealing the reservoir 9 is described, Fig. 4 (not shown).
Patent GB-1437002-A (GB)
Title: Cyclic amines
IPC: C07D207/46
Filed: 1972-09-13
Abstract: 1437002 Cyclic amines and nitroxides as stabilizers IMPERIAL CHEMICAL INDUSTRIES Ltd 11 Sept 1973 [13 Sept 1972] 42444/72 Heading C3P [Also in Division C2] Polyolefins may be stabilized against ultraviolet light with a compound of the formula where R is hydrocarbon and R<SP>1</SP> is H or hydrocarbon, with a nitroxide thereof or with the bicyclic compound produced by reacting a compound of Formula I with a dienophile.
Patent GB-1525396-A (GB)
Title: Sintered cathode
IPC: H01J1/28
Filed: 1975-10-16
Abstract: 1525396 Cathode constructions PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 16 Oct 1975 [19 Oct 1974] 42448/75 Heading H1D To reduce grid current in a grid controlled electron tube, a sintered impregnated or dispenser cathode 1 includes areas 2 of reduced emissivity which project from the emitting surface; the areas coincide with the grid and have a focusing effect. The areas are formed by fusion using an electron, ion or laser beam. The focusing effect may be increased by removing material from the emitting areas 3a by spark erosion or photoetching; the projections are subsequently repassivated. The projections may be formed before sintering. Triodes, tetrodes, klystrons and travelling wave tubes are referred to.
Patent GB-1113810-A (GB)
Title: Process for the manufacture of coated synthetic board
IPC: B27N7/00
Filed: 1965-10-06
Abstract: Fibre board and particle board is coated by applying a moisture-cure polyurethane coating composition having free isocyanato groups to the board which is exuding moisture and is at at least 37.8 DEG C.  The board may comprise fibres, platelets or splinters of wood or other ligno-cellulosic materials, with or without a synthetic resin binder, and is formed under heat and pressure.  The board may be coated immediately after its removal from the forming device or after sanding, whilst the board is still hot.  The moisture-cure polyurethane coating compositions usually contain free isocyanato groups at terminal positions of the polymer chain, and may be derived from prepolymers prepared by the reaction of polyols such as polyether polyols, vegetable oils such as castor oil, or polyesters with organic polyisocyanates, the latter being in excess.  The compositions may contain ultraviolet light absorbents, viscosity control agents, inorganic, moisture-free pigments and may be applied in anhydrous, low boiling organic solvents by spraying or brushing, dipping or roll coating.  The board may be flat or moulded into intricate shapes, e.g. a beverage case.
Patent GB-1446922-A (GB)
Title: Drives for machines with chains driving working equipment  such as chains conveyors excavators and mining machines
IPC: E02F3/14
Filed: 1973-09-10
Abstract: 1446922 Bucket ladder excavators GOSUDARSTVEN N I I PROEKT INST UGOLNOI PROMYSHLENNO 10 Sept 1973 42510/ 73 Heading E1F [Also in Division B8] Conveyer chains 2, are driven from a motor 5 via reduction gearing 4, the latter being connected by a differential gear 7 to a vibratory system 6, for the purpose of damping torsional vibrations. The system 6 comprises an inertial mass 14 and a resilient member 12. The latter may be a pneumatic pistoncylinder unit, the cylinder of which is either pivotally connected to the machine frame (as shown) or is rigid therewith (Fig. 3, not shown). In the latter alternative the piston is connected to a crank arm of the inertial mass 14 by a chain 18. If the conveyer encounters an insurmountable obstacle the torque on the drive shaft 3 causes a limit switch 29 to open, thereby causing closure of a valve 30 (Fig. 2), opening of a valve 31 leading to atmosphere, disconnection of current to the motor 5, and operation of a brake shoe 33. In a modification (Fig. 4, not shown) the valve 31 may lead to a low pressure chamber (36) instead of to atmosphere. In order to vary the natural frequency of the system 6, the mass 14 may have masses (22), (22) (Fig. 7, not shown) of adjustable radius. In another arrangement (Fig. 7, not shown), an inertia mass (14b) may be adjustably mounted on the member 12. In a modification (Fig. 9, not shown), there may be provided a system in which each end of the drive shaft is connected to a respective drive arrangement identical with that shown in Fig. 1.
Patent GB-1386802-A (GB)
Title: Hydrocarbon conversion catalysts
IPC: B01J21/12
Filed: 1971-03-12
Abstract: 1386802 Hydrocarbon conversion catalyst IMPERIAL CHEMICAL INDUSTRIES Ltd 28 Feb 1972 [12 March 1971 3 May 1971] 42752/74 and 42753/74 Divided out of 1386801 Heading B1E An amorphous silica/alumina hydrocarbon conversion catalyst containing at least 6% wt alumina is formed from a silica/alumina containing 7 to 40% wt alumina by removal of 1 to 35% of the alumina. The alumina may be removed by treatment with acids, e.g. sulphuric, hydrochloric, hydrafluoric, hydrobromic, nitric or trihaloacetic, with complexing agents, e.g. E.D.T.A. or acetyl acetone, or with water or an acidic solution in the presence of a strongly acidic ion exchange resin. Suitably, the silica/alumina treated has a surface area of 50-700 m<SP>2</SP>/g and a mean pore diameter of 10-400A‹. The catalyst may be contacted with liquid water at above 100‹C either before or during treatment to remove alumina. The alumina removal is accompanied by a reduction in sodium content of the catalyst.
Patent GB-987661-A (GB)
Title: Dispenser for a towel strip
IPC: A47K10/28
Filed: 1963-10-30
Abstract: 987,661. Towel dispensers. BELMAGZURICH BELEUCHTUNGS-UND METALLINDUSTRIE A.G. Oct 30, 1963 [Sept. 6, 1963], No. 42844/63. Heading A4G. A towel dispenser has a dispensing roller 20 with a rough surface, such as glasspaper, a rubber-covered clamping roller 25 and rewind drive roller 21, the shaft 21a carrying rewind drive roller 21 serving as a measuring shaft, and a locking device 31 with a locking cam 31a fixed to shaft 21a and co-operating with a pawl 33 rockable about a pin 34 which is operated by a vacuum time delay device comprising vacuum cups 39, 40 and a rod 35 to which cup 39 is attached and which is slidable axially. When a length of towel strip 6 is pulled out roller 20 drives shaft 21a through gears 22, 23, 24 and therewith the locking disc 31 and a cam 32 which acts on an arm 33b to rock pawl 33 and tension rod 35 against a spring 38 to press the cups 39, 40 together, the shaft 21a completing one revolution which is ended when cam 31a strikes arm 33a of pawl 33, this position of the cam allowing the pawl to rock back. The rocking back, however, is delayed by the time required for spring 38 to pull cups 39, 40 apart.
Patent GB-1088456-A (GB)
Title: High-voltage, gas-blast type circuit breaker
Inventor: FURUKAWA TETSUYA
IPC: H01H33/28
Filed: 1964-10-22
Abstract: 1,088,456. Gas blast switches. FUJI DENKI SEIZO KABUSHIKI KAISHA. Oct. 22, 1964, No. 43121/64. Heading H2B. In a gas blast circuit-breaker, interrupter contacts 7, 11 are opened by means of an electromagnetic coil 15 arranged to repel a conducting ring 14 attached to the moving nozzle contact 11, the coil 15 being energized by discharging a capacitor 72 through it. The capacitor is charged from a transformer 74 and rectifier 73 supplied from the ground by a series of insulating transformers 75 inside an insulating column (3). The open signal is given by energizing a lamp (78) at the foot of a second insulating column (2); its light passes through a transparent plastics rod to a photo-electric cell 77 whose output triggers a spark-gap 71 to connect coil 15 to capacitor 72. As the contacts 7, 11 separate gas flows in both directions through passages 6, 13; the contacts remain open due to the pressure difference across the movable contact. At the same time as lamp (78) is lit a pipe 50 is connected to the high pressure source. With an inherent delay this operates a series switch 30 to break the residual current in a resistor 47 in parallel with the interrupter 7, 11. After a further delay the pressure gas closes an exhaust valve 25 to close passage 13; the pressure therein rises due to the relatively long passage 6 and the contacts are 7, 11 reclosed by a spring 17. In a modification (Fig. 3, not shown), the series switch 30 is operated by gas pressure derived from the gas blast outlet 13 and the coil 15 is energized successively by two capacitors 72a, 72b. With two or more circuitbreakers in series capacitors 46 provide voltage equalization.
Patent GB-1183118-A (GB)
Title: Process for producing High Molecular Weight Homopolymers or Copolymers of Iso-Olefin
IPC: C08F210/12
Filed: 1967-09-25
Abstract: 1,183,118. Iso-olefin polymerization catalyst composition. NIPPON PETROCHEMICALS CO. Ltd. 25 Sept., 1967 [11 Oct., 1966; 30 Jan., 1967], No. 43542/67. Heading C3P. High molecular weight polymers are made by polymerizing an iso-olefin in the presence of a catalyst composition comprising BF 3  and a compound of general formula M(OR 1 ) P , (OR 2 ) q X r  in which M represents a metal of Groups IIVII of the Periodic Table, R 1  and R 2  may be the same or different and represent alkyl, cycloalkyl, aryl or aralkyl group which may contain halogen substituents, X represents a halogen atom, p, q and r each represent an integer, the sum of p, q and r corresponding to the valency of M provided that p and q are not zero simultaneously. The preferred iso-olefin is isobutene, 2-methyl-butene- 1, and 2-methylpentene-1. If desired the iso-olefin may be copolymerized with a di-olefin having C 4-10  e.g. butadiene, isoprene, 2: 4-dimethylbutadiene, piperylene, cyclopentadiene, dicyclopentadiene, hexadiene, divinylbenzene, cyclohexadiene or vinylcyclohexene. The examples describe the polymerization and physical properties of products obtained from isobutene or isobutene/ isoprene mixtures.
Patent GB-939943-A (GB)
Title: Improvements in and relating to transistor circuits
IPC: H03K17/24
Filed: 1959-12-23
Abstract: 939,943. Transistor switching circuits. INTERNATIONAL BUSINESS MACHINES CORPORATION. Dec. 23, 1959 [Dec. 29, 1958], No. 43640/59. Class 40 (b). A switching circuit comprises a first transistor T1 to the base of which input signals are applied to render the transistor conducting; a second transistor T2; a first bias potential -V connected through impedances 27, 28 to the collector of transistor T1 and the emitter of transistor T2 respectively; a reference potential connected to the emitter of transistor T1; a potential divider 24, 18, 21 connected between the reference potential and a second bias potential +V to provide a bias for the base of transistor T1, the reference potential being intermediate +V and -V; a connection between the collector of transistor T1 and the base of transistor T2, so that the transistor T2 is rendered conducting when transistor T1 is rendered conducting; and a clamp circuit 31 to prevent the base of the transistor T2 exceeding the reference potential. As described the circuit forms a drive circuit for a magnetic core M in which the transistors are afforded protection due to faults. Firstly if the +V supply decreases sufficiently to bias T1 on the corresponding drop of collector potential of T2 ensures the rated dissipation is not exceeded. Secondly diode 32 ensures that T1 remains saturated if the collector circuit of T2 is open circuited. Thirdly if the -V supply fails the emitter potential of T2 is limited to a value below maximum dissipation.
Patent GB-1061025-A (GB)
Title: Disperse dyes of the anthraquinone series
IPC: C09B1/50
Filed: 1963-11-05
Abstract: The invention comprises dyes of the formula I <FORM:1061025/C4-C5/1> wherein A has the structure of the formula <FORM:1061025/C4-C5/2> B has the structure of the formula <FORM:1061025/C4-C5/3> each X is halogen, alkyl, alkoxy, hydroxyalkoxyalkyl or cyanoalkyl of up to 5 carbon atoms, hydroxyalkyl of 2 to 5 carbon atoms or a 2 : 3-benz radical, optionally further substituted by halogen, alkyl, alkoxy of 1 to 5 carbon atoms, halogenoalkyl or carbamoyl, R is alkyl, cyanoalkyl or hydroxyalkoxyalkyl of up to 5 carbon atoms or hydroxyalkyl of 2 to 5 carbon atoms, Z is hydrogen or methyl, a is 0, 1, 2 or 3, b, c, m and n are each 0 or 1 and b+c and m+n both equal 1.  The dyes are made by heating together in a solvent compounds of the formula A-H or B-H with 4 : 5-dinitro-1 : 8-dihydroxy- or 4 : 8 - dinitro - 1 : 5 - dihydroxyanthraquinones or with crude dinitrated chrysazin or anthrarufin.  The dyes form pigments by reaction in solution with metal carboxylates, e.g. of aluminium and zinc.  In examples, 1 : 5 - dihydroxy - 8 - nitroanthraquinones having in the 4-position a phenylamino, 21-, 31-or 41-methylphenylamino, 41-methoxyphenylamino or a -naphthylamino radical also substituted at the amino nitrogen by methyl, ethyl, n-propyl, n-butyl, isopentyl or hydroxyethyl or having in the 4-position a 31-carboxy-41-hydroxy-, 31-hydroxy-41-carboxy- or 31-methyl - 41 - hydroxy - 51 - carboxy - phenylamino group are described, as also are dyestuffs made by reacting N-methyl-aniline or 5-aminosalicylic acid with crude dinitrated chrysazin or crude dinitrated anthrarufin.
Patent GB-902291-A (GB)
Title: Improvements in or relating to window or door fasteners
Inventor: LOCKWOOD LESLIE BRYARS
IPC: E05C9/16
Filed: 1959-12-28
Abstract: 902,291. Releasable fastenings. CROMPTON & SONS Ltd., THOMAS. Dec. 28, 1960 [Dec. 28, 1959], No. 44047/59. Class 44. A fastening comprising two bolts 11, 12 operated simultaneously by a central handle 30 is characterized by the bolts engaging cam surfaces 27, 28 in the closed position. A crank 23 rotatable by the handle has pivoted to it two members 15, 16 pivotally attached to the bolts. The members 15, 16 have arcuate surfaces which slide along the sides of the box 31 to guide the bolts in an axial direction in guide sleeves 13, 14. The bolts are joggled at 25, 26 tc engage the cam surfaces In a modification the bolts are bent at rightangles at their ends and engage in an inclined slot. The handle may have a spigot sliding in an arcuate slot in the box arranged so that the fastening may be used for left or right-handed doors. A barrel-type lock may be incorporated.
Patent GB-951424-A (GB)
Title: Purification of butenediol
Filed: 1961-12-08
Abstract: 2-Butene-1, 4-diol in liquid form which contains an ester impurity is purified by treating the impure liquid diol or an aqueous solution thereof with an alkali metal hydroxide or an alkaline earth metal hydroxide in an amount and for a time sufficient to combine stoichiometrically with the amount of ester impurity desired to be removed, and then distilling off the butenediol. The impure butenediol is suitably obtained by hydrogenation of butynediol. Examples are given. Specification 832,141 is referred to.
Patent GB-899509-A (GB)
Title: Improvements relating to electrolytic furnaces
IPC: C25C3/08
Filed: 1960-12-22
Abstract: 899,509. Agitating furnace charges; charging electrolytic furnaces. ALUMINIUM-INDUSTRIE A.G. Dec. 22, 1960 [Dec. 29, 1959; Oct. 28, 1960], No. 44093/60. Class 51 (2). [Also in Group XXXVI] In an electrolytic furnace for producing aluminium from alumina using a fused fluoride bath, a crust-breaker consisting of two beams 24, 25 carrying crushing teeth 26 is disposed over the full length of a gap 23 between anode sections 19, the beams being adapted to move vertically either alternately or together. Before the crust-breakers are operated, alumina is distributed over the crust 7 from a hopper 27 having a double bottom, the upper part 32 of which is a porous plate supplied with compressed air through ports 34 in pipes 33 to fluidize the alumina causing it to flow freely through perforated walls 35 and out through passages 36. A modification, Fig. 1 (not shown), has a hopper with a bottom row of valve-controlled outlets, and, in another modification, Fig. 4, the beams 25 have pivots 37 at alternate ends of the furnace and are rocked by fluid-operated rams 38, latches 41 being provided to hold the beams in the raised position when out of use. The beams have teeth 26 only on the half of their length remote from the pivots 37. A final modification, Fig. 5 (not shown), has longitudinal beams with teeth along the full length operated by rams at both ends. The bath lining comprises powdered silicon carbide, 70-80% by weight; powdered coke, 15-10% by weight; medium hard pitch, 15-10% by weight; mixed at a temperature of 50-250‹ C. The particle size of the silicon carbide is up to about 6 mm. and of the coke up to about 22 mm. German Specification 895,379 is referred to.