baber/WOPTO huggingface dataset:
Patent GB-328378-A (GB)
Title: Improvements in or relating to electro-motors especially applicable to the driving of gyroscopes
IPC: H02K13/00
Filed: 1929-03-08
Abstract: 328,378. Brown, S. G. March 8, 1929. Commutators; brush-holders; motors, cooling and ventilating; cores; mounting rotors. - In a continuous-current motor having a flexible shaft, such as a high-speed motor for a gyroscope, brush chatter and sparking are eliminated by mounting the commutator close to one of the shaft bearings, the commutator bush being supported on the shaft at one end only, viz., the end adjoining the bearing. The brush-holder is fixed to the end of a flat spring, the other end of which is fixed or hinged to a fixed part of the motor casing. , In the form shown, the commutator sleeve 3, Fig. 1, bears on the flexible shaft 2 only at the part 4 near the bearing 5. Thus only a minimum of any whipping of the shaft is transmitted to the commutator. The commutator is finally ground when mounted on the shaft and running at its normal speed. Fig. 2, which is a section on the line A-A, Fig. 1, shows the springy brush-arm 6 fixed rigidly or hinged to one end of a member 7 attached to. an arm 8 projecting from the machine casing. The brush-holder 9 is mounted on the other end of the arm 6 and the brush pressure may be further regulated by a compression spring 11 which bears on the end of the brush-holder and is controlled by a screw 13 carried in a member 14 of the casing. In cases where the gyro which delivers an air blast for control purposes, the air inlets may be so arranged in the casing as to ventilate the machine. Thus air may be drawn in through openings 22 in the casing and be expelled from openings 23. The heavy rim 16 of the gyro wheel is carried by a flange web 18 and hub 17 and it encloses the laminae 19 of the rotor. The stator 20 of the motor is mounted on an inwardly-projecting cylindrical extension 21 of the casing. The construction and mounting of the gyro-wheel, rotor and stator do not form a part of the invention.
Patent GB-1487817-A (GB)
Title: Wiping device for headlamps of motor vehicles
IPC: B60S1/38
Filed: 1975-02-25
Abstract: 1487817 Headlamp wipers DUCELLIER & CIE 25 Feb 1975 [8 March 1974] 7752/75 Heading A4F A device for wiping a vehicle headlamp has an additional arm 7 pivoted to a wiper arm 3 at 7a and to a yoke 11 which is slidably connected to a wiper blade 14a. The end 3a of the wiper arm is pivotally connected to a yoke 5 fixed to the wiper blade. The movement of the wiper blade is limited by stops 18 and Fig. 1 shows the blade in its extreme positions. Fig. 3 shows the cycle of operation.
Patent GB-1042676-A (GB)
Title: A quick-acting machine-hammer having means for adjusting its stroke position
IPC: B21J7/12
Filed: 1964-02-25
Abstract: 1,042,676. Forging. E. RIBBACK. Feb. 25, 1964, No. 7798/64. Heading B3H. A quick-acting machine hammer has two tools 3 each mounted on a double-arm lever 2 pivoted on a spindle 1 supported in an eccentric bush 6 which is rotatable by worm gearing 6, 7 for varying the stroke position of the tool, the eccentric bush 6 and the worm-wheel 7 being formed as a pendulum. Two levers 2 carrying opposed tools 3 are pivoted on spindles 1 and actuated by a crankshaft 4. Both eccentric bushes 6 are provided with worm-wheel quadrants 7 meshing with worms 8 on a strokeadjusting shaft 9. During operation of the hammer the pendulum mounted parts 6, 7 can oscillate causing the worms 8 to reciprocate on the shaft 9 between stops 10. This is stated to relieve the worm gear of the forces acting on the tools.
Patent GB-791899-A (GB)
Title: Improvements in processes for carrying out chemical reactions
IPC: C10G9/00
Filed: 1954-03-17
Abstract: An endothermic reaction in which the reaction material flows through a reaction chamber is characterized by maintaining the heating surface at 200 DEG  C. or more above.  The optimum reaction temperature and adjusting conditions and dimensions of the reactor and reactants to avoid turbulent flow and consequently bulk heating. The cracking of hydrocarbons, the production of hydrogen from methane and the syntheses of alcohol formaldehyde and hydrocarbons from carbon monoxide and hydrogen are exemplary reactions.
Patent GB-740221-A (GB)
Title: Improvements in hypodermic syringes
IPC: A61M5/32
Filed: 1954-03-18
Abstract: 740,221. Hypodermic injection devices. GABRIEL, D. March 18, 1954 [March 26, 1953] No. 7922/54. Class 81(2). A hypodermic syringe is provided with a stub needle unit mounted on a reduced end portion of the syringe, the unit having a tapered portion on which a hypodermic needle can be detachably mounted and including a stub needle projecting outwardly from the tapered portion which it joins in an outwardly extending shoulder which limits movement of the stub needle with respect to a vial in withdrawal of liquid from the vial. The stub needle unit comprises a ferrule 12 which is cemented or threaded to the syringe. A hypodermic needle unit 14 is mounted on the tapered portion 13 of the stub needle unit. The stub needle 15 is accommodated within a large bore 25 in the mount of the hypodermic needle unit 14. Shoulders 16 of the stub needle unit limit the' movement of the stub needle 15 within a vial from which liquid is withdrawn, the hypodermic needle unit 14 being detached for this purpose.
Patent GB-268344-A (GB)
Title: Improvements in or relating to steam plants provided with one or more water tube boilers and air preheaters
IPC: F22B17/00
Filed: 1927-03-22
Abstract: 268,344. Aktiebolaget Ljungstr÷ms Angturbin. March 24, 1926, [Convention date]. Air, supplying; deflectors.-In a steam plant provided with a number of water-tube boilers, the furnace in each boiler is divided by radiation tubes 11 situated at a low level, combustion spaces 12 and 13 being provided for the partial and complete combustion of the fuel. The space 13 is larger than the space 12 and the sectional area of the boiler is decreased either continuously or stepwise towards the top. When more than one row of tubes 11 is provided they are arranged so that the tubes in each successive row are opposite the spaces in the. preceding row. A nest of water tubes 14 connected to a header 15 may be provided above the spaco 13 and tubes 17 are provided for connecting the tubes 11 with the header 15. The tubes 17 are provided with insulation 18. Gases from the furnace escape through a rotary preheater to a chimney 31, assisted by a fan 29. Hot air from the preheater is delivered to an air chamber, 36 extending transversely over the boiler front and is conducted through channels 37 partly to blast boxes 38 and partly through guide blades 39 to the furnace space 13. The boiler is built on the Babcock-Wilcox system, and the preheater 28 may be of the Ljungstr÷m type, with two fans for air and flue gases respectively. Specification 267,966 is referred to.
Patent GB-937938-A (GB)
Title: Improvements in sodium vapour electric discharge lamps
Inventor: CAYLESS MAURICE ARTHUR
IPC: H01J61/04
Filed: 1960-03-07
Abstract: 937,938. Metal vapour lamps. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Feb. 24, 1961 [March 7, 1960], No. 8006/60. Class 39 (1). A sodium vapour electric discharge lamp comprises an arc tube 8 of light permeable vitreous or ceramic material of high alumina content sealed at its ends by metallic or ceramic discs 9, 10 supporting electrodes 2, 3 having a coating of electron emissive material and being connected to leads 6, 7 which pass through the stem 5 of an outer heat insulating container 4. The arc traverses an atmosphere containing sodium at a partial pressure of between 5 and 500 mm. of mercury and a rare gas, e.g. neon, at a pressure sufficient to support an initial discharge between the electrodes, and the outer container 4 may be evacuated or formed as a double walled Dewar flask. A thermally insulating glass wall 12 and a thin reflective film of metal, e.g. gold, on the inside of container 4, may be provided to assist in maintaining the operating temperature within the range 500-800‹ C.
Patent GB-1235646-A (GB)
Title: Impedance measuring device
IPC: G01R27/02
Filed: 1970-02-19
Abstract: 1,235,646. In-circuit impedance measuring. FORD MOTOR CO. Ltd. Feb. 19, 1970 [March 13, 1969], No.8006/70. Heading G1U. [Also in Divisions H1 and H2] In order to measure the impedance of an incircuit component 14, Figs. 1, 6 a voltage is applied, e.g. by clips 13, 16, across the component and the resulting current flowing therethrough is sensed by a split ferrite core 15 clamped around a lead to the component. In a first embodiment Fig. 1, the resulting flux in the core is opposed by a further flux which is varied in accordance with an out-of-balance indicator 19, 20, 21, by adjusting an impedance 17 until balance is achieved. In a second embodiment Fig. 6, a regulated power supply is used and the flux resulting from the current flowing in the component being measured is sensed and indicated on an appropriately calibrated meter 38. The flux in the core could be sensed by a Hall plate Fig.7, (not shown). Resistance, capacitance and inductance can be measured by either method, but when measuring capacitance or inductance by the first method, rather than using a variable capacitor or inductor respectively to balance the unknown impedance, it is preferred to suitably phase shift the balancing current and to adjust its magnitude by a variable resistance. Such a circuit for measuring capacitance is shown in Fig. 4, in which a 90 degree phase shift of a balancing current is achieved by components 25, 26, 27, and its magnitude is controlled by a resistor 17. By reversing the direction of the balancing current Fig. 5, (not shown) through the core, and recalibrating the dial of the adjustable resistor, the circuit of Fig. 4 can be used for measuring inductance.
Patent GB-123656-A (GB)
Title: Improvements in Sights for Guns.
Inventor: WESTOVER GEORGE
IPC: F41G1/42
Filed: 1918-05-13
Abstract: 123,656. Westover, G. May 13, 1918. Sights.-Consists of a sighting tube, a plate mounting integral therewith, and a fixing screw or the like for securing the plate to the gun. The invention is shown applied to a battle sight for a Hotchkiss gun, comprising a tubular sight a and a mounting-plate b secured to the gun by a screw e. The tubular part a is carried by an upstanding part d of the plate b, which is strengthened by a central longitudinal web f.
Patent GB-409878-A (GB)
Title: An improved thermostat
IPC: G05D23/12
Filed: 1933-03-16
Abstract: 409,878. Thermostats; electric switches. BRIGGS, J. F. S., Bank Street, Whangarei, New Zealand. March 16, 1933, No. 8015. [Class 64 (ii).] Heat-sensitive actuating elements formed by a resilient curved or bent tube A as of steel filled with mercury and sealed at its ends have at one end a cylindrical extension B with an internal seat C, an asbestos washer D and metallic block E being inserted and the whole being sealed by electric welding &c. A second washer and block may be inserted as shown. The element may be applied to a manuallyclosed rotatable disc switch H connected to its spindle J through a coiled spring K and having a ratchet tooth M normally engaged by a pivoted detent N secured by a rod G to the free end of the element, the spring then being under tension. On the element reacting to a rise in temperature the detent is pulled out and the disc H is rotated by the spring to cause one or both of electric terminals O, O<1> to move away from a metallic bridge piece R and thus break the circuit.
Patent GB-1181717-A (GB)
Title: Method of Arc-Welding Thick Members
IPC: B23K25/00
Filed: 1967-02-21
Abstract: 1,181,717. Welding by fusion. YAWATA IRON & STEEL CO. Ltd. 21 Feb., 1967 [26 Feb., 1966], No. 8101/67. Heading B3R. In electro-gas welding, a consumable electrode 2 is fed from the side of the weld seem at an angle, e.g. 90 degrees, to the longitudinal direction of the weld and the electrode tip is reciprocated axially of the electrode 2. The reciprocation of the electrode tip is obtained by varying its feed rate. The seam may be a parallel sided gap or a V-groove. The electrode 2 may be fed through a guide in a water-cooled moving copper shoe 7 having a nozzle 10 through which is fed carbon dioxide or inert gas. A fixed steel backing 8 or a second water-cooled copper shoe is used. The seam is inclined at at least 30 degrees to the horizontal.
Patent GB-320596-A (GB)
Title: Improvements in or relating to electrodes for electric arc welding or soldering
IPC: B23K35/04
Filed: 1929-03-13
Abstract: 320,596. Alloy Welding Processes, Ltd., and Clarke, E. J. March 13, 1929. Uniting by fusion. - A metallic electrode for arc welding or soldering alloy steels which are heat resistant at high temperatures and/or resistant to oxidizing or other corrosive effects, such as stainless steel, consists of a core of mild or alloy steel provided with a flux and/or slag forming coating containing an alloy in powdered form comprising two or more of the non-ferrous metals required to be alloyed with the core for the production of the alloy steel, in order to avoid the use of too large a quantity of the added metals. The powdered alloys may consist of 25 parts of nickel together with 75 parts either of chromium tungsten or molybdenum, or of 75 parts of chromium together with 25 parts either of tungsten or molybdenum, or of 20 parts of nickel, 50 parts of chromium and 30 parts of iron or of 20 parts of nickel, 10 parts of molybdenum and 70 parts of chromium. If more of the added metal is required the core may consist of an alloy steel containing a proportion of the non-ferrous metals, e.g. 5 to 20 per cent of chromium and up to 10 per cent of nickel, while the coating may contain a powdered nickel chromium alloy in which the chromium is in the proportion of three or four times the lower percentage of that in the core. An electrode for depositing an austenitic stainless steel may have a mild steel core which may be coated with nickel and is then wound with asbestos yarn in open spirals and a coating composition containing the flux and powdered nickel chromium alloy extruded on the core. The composition may consist of 1 part of a flux comprising equal parts of fluorspar and calcium carbonate and 2 parts of a powdered alloy of one part of nickel and 3 parts of chromium, made into a paste with sodium silicate solution.
Patent GB-105155-A (GB)
Title: Improvements in the Manufacture of Operating Levers, Pedals and the like.
IPC: F16H51/00
Filed: 1916-06-12
Abstract: 105,155. Humber, Ltd., and Wilson, W. T. June 12, 1916. Links and levers. - An operating lever, pedal, handle, &c. for use on motor-vehicles and other machinery is made of sheet metal folded on itself and perforated at B, Fig. 1, to receive a shaft C, to which it is fixed by a cotter D placed in the bend of the metal and engaging a flat C<2>. Fig. 6 shows a modification in which a metal strip is bent on itself lengthways and fixed to the shaft by a cotter D placed in the bend. As shown in Fig. 8, the lever consists of long and short perforated arms F, E, and the cotter is replaced by a bolt K; a slot in the bend J, extending into the holes which receive the shaft C, enables the lever to be clamped on to the shaft.
Patent GB-265904-A (GB)
Title: Improvements in carburetters
IPC: F02M37/02
Filed: 1926-03-26
Abstract: 265,904. Seignol, E. Feb. 9, 1926, [Convention date]. Addition to 251,584. Spray carburettors. - The parent Specification describes a carburettor having a venturi-shaped diffuser a with throttle valve b on the engine side of its throat c, a tube d of relatively large diameter discharging into the diffuser near to but between the throat and the throttle valve, the tube being in communication at its other end with a venturi f to which fuel is supplied from a tank e through a tube g, and a slow running tube such as h which leads from the bottom of the tank e to the engine side of the throttle valve b. The invention consists in connecting such tube h either to a suction chamber f<1> of the venturi f, Fig. 1, or to the large tube d at a point near the diffuser and where the tube is reduced in diameter as at d<1>, Fig. 3. Further, in either of these constructions the fuel tube g is provided with a series of holes g<1>, g<2>, g<3>, &c., Fig. 2, which may open into a pipe g<a> in communication with the atmosphere. As the level in the tank falls, the height through which fuel has to be lifted by suction increases, but the fall of level opens up an increasing number of inlets for air which has the compensating effect of reducing the weight of the fuel column. Reference has been directed by the Comptroller to Specifications 23823/10, 113,433. 136,440, 136,685, 157,647, 196,197, and 217,632.
Patent GB-576800-A (GB)
Title: Improvements in the production of the formal and hemiformal of ethylene cyanohydrin
Filed: 1944-05-03
Abstract: Formaldehyde or a polymer thereof is reacted with aqueous acrylonitrile in the presence of an alkali.  In the aqueous solution formaldehyde reacts as methylene glycol and the product is either the formal or hemiformal of ethylene cyanohydrin depending whether two or one moles of formaldehyde are reacted. Alkalis which may be used include alkali or alkaline earth metal oxides, hydroxides, carbonates, hydrides, alcoholates or cyanides; or alkyl amines.  In the example, acrylonitrile, paraformaldehyde, water and sodium hydroxide are reacted together and the formal of ethylene cyanohydrin is separated, by ether extraction followed by distillation, from the reaction product. Specification 544,421 is referred to.
Patent GB-441041-A (GB)
Title: Manufacture of dyestuffs and intermediate products
IPC: C07C45/63
Filed: 1935-03-18
Abstract: Monobrominated methylbenzanthrones are obtained by brominating a methyl-benzanthrone containing the methyl group in 3, 6, or 7 position, or a mixture of such methyl benzanthrones, such as may be produced by removing the 2-methylbenzanthrone from the mixture produced in known manner from 2-methylanthraquinone.  The bromination is preferably carried out in aqueous sulphuric acid at between 20 and 100 DEG  C., the bromine entering the bz-1-position. The products may be converted into new vat dyestuffs by treating with alkaline condensing agents, or by treating the bromomethylbenzanthrone with a sulphur or selenium compound to convert it into sulphide or selenide, followed by condensation. The products may also be treated with a 1-aminoanthraquinone having a free 2-position, such as the 4- or 5-benzoylamino derivative, and then alkali-condensing.  According to examples: (1) 6-methylbenzanthrone is brominated in sulphuric acid; (2) the methylbenzanthrone obtained according to Specification 133/10, [Class 2 (iii)], is brominated, condensed with 1-aminoanthraquinone, and the product further condensed with alcoholic potash a dye of olive shade is obtained after oxidation on vegetable fibre; (3) a methylbenzanthrone obtained from 2-methylanthraquinone is brominated, heated with sulphur, whereby a mixture of methylated bz<1>- and bz<1>1-dibenzanthronylsulphides is obtained, which is then further condensed with alcoholic potash; a blue to violet shade is obtained after oxidation on vegetable fibre; (4) cotton is dyed with the brominated methylbenzanthrone of example (1). Salts of sulphur or selenium are used to react with the brominated compound and may also be obtained in situ from xanthates, thiosulphates and hydrosulphites.
Patent GB-1103212-A (GB)
Title: Vinyl polymer overlay films and compositions for forming the same
IPC: C08L57/00
Filed: 1965-02-26
Abstract: Thermoplastic film forming composition comprising a low melting thermoplastic vinyl polymer matrix resin and dispersed therein 1 to 10% by weight of the matrix resin of a particulate vinyl polymer resin having an average particle size of 20 to 120 microns, the fluxing temperature of said particulate resin being at least 20 DEG C. higher than that of said matrix resin. The matrix resin may be derived from vinyl aromatic compounds, vinyl and vinylidene halides, vinyl esters, acrylic and alkacrylic acids, esters, amides and nitriles, maleic and fumaric esters, vinyl ethers, vinyl ketones and vinyl heterocyclic compounds, and the particulate resin similarly. Fibres may be formed by blending the resins and extruding at a temperature above the fluxing temperature of the matrix resin but below the fluxing temperature of the particulate resin, and laminated to plastic sheet, paper, carboard and hardboard by hot pressing. Examples describe compositions comprising polyvinyl chloride particulate resin, polyvinyl chloride or vinyl chloride/vinyl acetate copolymer matrix resin, tin mercaptide and stearic acid.
Patent GB-1429740-A (GB)
Title: Determination of co2 content of biological fluids by  enzymatic technique
IPC: C12Q1/48
Filed: 1974-02-26
Abstract: 1429740 Determination of CO 2  &c. in blood MEDI-COMPUTER CORP 26 Feb 1974  8560/74 Heading G1B The amount of CO 2  and HCO 3  in a sample of whole blood, plasma or serum is determined by a method comprising adding phosphoenol pyruvate (PEP) and an enzyme selected from phosphoenol pyruvate carboxylase (PEPC) and phosphoenol pyruvate carboxykinase to the sample, when the PEP reacts with the HCO 3  to form oxalacetate, and determining the quantity of oxalacetate formed, for example by reacting it with ferric ions in acid solution or (preferably) with the reduced form of nicotinamide adenine dinucleotide (NADH) or thio-NADH and malic dehydro-genase (MDH). Compositions for use in embodiments of the invention comprise PEP, PEPC, NADH and MDH in solid form; PEP, PEPC, NADH, MDH and a tris- HCl buffer; PEP in tris-HCl buffer containing  MgCl 2 ; NADH, PEPC and MDH in tris-HCl buffer containing MgCl 2  ; PEP, PEPC, NADH, MDH in tris-HCl buffer containing MgCl 2 . A specific assay composition comprises for each millimole of PEP from 50 to 75 IU PEPC, 0À75 to 1À0 millimole NADH, from 40 to 60 IU MDH.
Patent GB-110324-A (GB)
Title: Improved Manufacture of Linoleum.
Inventor: WADE HAROLD
IPC: D06N1/00
Filed: 1917-06-14
Abstract: 110,324. Wade, H., (Titanium Alloy Manufacturing Co.). June 14, 1917. Fibrous plastic compositions.-A compound of titanium, preferably titanic oxide, which may be in the form of minute particles deposited on particles of calcium sulphate, as described in Specifications 105,645 and 105,646 [Class 95, Paints &c.] is used in the manufacture of linoleum.
Patent GB-139337-A (GB)
Title: Improvements relating to foot instep arch supports
IPC: A43B7/22
Filed: 1919-04-05
Abstract: 139,337. Blake, H. April 5, 1919. Foot-arch supports.-A metal plate is arranged parallel to the insole of a boot to prevent the end of the spring of a foot-arch support from damaging the leather. The plate may be incorporated in a loose sock or insole as shown at J, Fig. 3, or may be secured to one end of the leather or like covering B of a foot-arch support by fastenings E, Fig. 1, arranged near its front edge so that the bearing line of the spring A is well in the rear of the fastenings.