baber/WOPTO huggingface dataset:
Patent GB-1012292-A (GB)
IPC: G01R21/08
Filed: 1964-05-05
Abstract: 1,012,292. Electric selective signalling. SIEMENS - SCHUCKERTWERKE A.G. May 5,1964 [May 10,1963],No. 18700/64. Addition to 1,012,291. Heading G4H. [Also in Division G1] In an A.C. energy meter as set out in claim 1 of Specification 1,012,464, wherein a Hall generator provides an output which is a function of the product of a rectified first signal and a second alternating current signal and is fed via an A.C. amplifier and an arrangement which reverses the polarity of alternate halfcycles of the amplified A.C. to an integrating device, the integrating device comprises a saturable inductance and the meter has an arrangement whereby a variable square wave voltage, of the same phase as the second alternating current signal, is fed to the switching arrangement together with the Hall voltage. Furthermore, arrangements are incorporated whereby a variable alternating voltage of the same phase as the first alternating current signal is fed to the switching arrangement together with the Hall voltage. These voltages are added to compensate for errors caused by the use of an integrating choke, and the theory of the error compensation is fully explained in the Specification. Fig. 5 shows an arrangement which is similar to that shown in Fig. 2 of the parent Specification, except that a transformer 28 is connected into the load current circuit and is used to energize the field winding of the Hall plate 1, while a transformer 32 is connected into the voltage circuit, which supplies the input current after rectification to the Hall plate. The output from the transformer 28 is limited by the diodes 29 and used to trigger a conventional bi-stable arrangement 27. The output from this arrangement is added into the Hall plate output and is adjustable by resistance 31. The A.C. output from the transformer 32 is added to the Hall plate output and is adjustable by resistance 34. The combined signal is applied to the amplifier 11 which operates as explained in the parent application. In operation, each time the integrating choke 19 saturates, the relaxation oscillator 21 is energized so that a counter 23 is advanced and the state of a transistor 26 is reversed. This acts to change the phase of the supply to the switching circuit 18 by 180 degrees, this supply being derived from the input through the circuit 24. The change in the circuit 18 reverses the polarity of the output from the circuit 11 so that current passes through the integrating choke in the opposite direction, as explained in the parent application.
Patent GB-677860-A (GB)
Title: Antenna of small dimensions
IPC: H01P7/04
Filed: 1950-07-28
Abstract: 677,860. Aerials. STANDARD TELEPHONES & CABLES, Ltd. July 28, 1950 [Nov. 19, 1949], No. 18895/50. Class 40 (vii). A radio antenna assembly comprises a radiating antenna of small length relative to half a wavelength at the operating frequency enclosed within a structure which although surrounding the antenna allows the passage of radiation in one plane. The antenna may comprise a dipole of the order of a tenth of a wavelength long which is easy to rotate at high speeds owing to its small physical size but which will, by itself, have a very low radiation resistance. The enclosing structure increases the effective radiation resistance of the antenna, enabling it to be matched to its feeder. It may consist of an open wire cage made of rods 6 perpendicular to the plane of polarization of the dipole 2 secured at the top and bottom to plane conductive discs 5 and 4. The rods are spaced closely enough to form a polarization grating to filter the vertically polarized components and pass the horizontally polarized energy. Matching is only completely achieved at one frequency but the assembly is effective over a relatively wide band-width. In an example, where the dipole was of 30 degrees electrical length at 800 Mc/s. the spacing between the plates and diameter of the plates was made half a wavelength and twenty uniformly spaced rods were used.
Patent GB-989988-A (GB)
Title: Improvements in or relating to electric resistance furnaces
Inventor: MOLM ANDERS ENERT
IPC: H05B3/66
Filed: 1963-05-13
Abstract: 989,988. Mounting resistance-heating elements in furnaces. KANTHAL A.B. May 13, 1963, No. 18899/63. Heading H5H. In a furnace comprising hairpin-shaped resistance-heating elements of MoSi 2 , each having a glow zone portion 12, Fig. 4, depending freely in the furnace space and two spaced lead-in ends 13 passing to the exterior through insulation 16 in a vault or wall of the furnace, a middle portion 16B of this insulation is designed for good transfer of heat from the lead-ins to a central layer 14B of the furnace vault or wall of good heat conductivity, there being further electrically-insulating layers of a lower heat conductivity 'material disposed on opposite sides of the middle portion and the central layer. The central layer 14B of the furnace vault may include or be replaced by a cooling channel 19, Fig. 5, for circulation of air or water, having walls 20 of good heat conductivity in contact with the central portion 16B of insulation 16, the cooling channel being common to a plurality of heating elements disposed in a row. Also, as shown in Fig. 5, the central portions of the lead-ins 13 may radiate heat to a ceramic tube 21, the ends of which are secured in brick plugs 22, 23.
Patent GB-1419699-A (GB)
IPC: A01N41/06
Filed: 1973-04-19
Abstract: 1419699 Substituted O-[aminosulphonyl]-glycollic amides BADISCHE ANILIN- & SODAFABRIK AG 19 April 1973 [22 April 1972] 18923/73 Heading C2C Substituted O - [ - aminosulphonyl] - glycollic amides of the formula where R denotes hydrogen, alkyl, cycloalkyl, or haloalkyl and the carbonamide nitrogen is a ring member of an aza-cycloalkane or an azabicycloalkane the carbon atoms of which may bear alkyl substituents each independently containing from 1 to 4 carbon atoms and which may contain in the ring further hetero atoms which if sulphur, may be substituted by oxygen atoms, and if nitrogen may be substituted by C 1-4  alkyl radicals, are disclosed. They may be prepared by reacting the N-(hydroxyacetyl)-derivative of the appropriate heterocyclic nitrogen compound with the appropriate aminosulphonyl chloride in the presence of an acid acceptor. In one embodiment the N-(hydroxyacetyl)-derivative is prepared by reacting the appropriate heterocyclic imine with 1,3-dioxolane-2,4-dione, or with glycollic acid. Glycollic amides exemplified include: o - [isopropylaminosulphonyl] - glycollic hexamethyleneamide, o - [methylaminosulphonyl] - glycollic tetramethyleneamide 3- [aminosulphonyloxyacetyl] - 3 - azabicyclo - (3, 2,2)-nonane. Morpholines and piperazines may be part of the carbonamide function. The compounds may be used in herbicidal compositions using liquid or solid carriers. The compositions may be used for combating the growth of unwanted plants in crops such as Indian corn, soya bean, cotton, beet, peas or lettuce.
Patent GB-1382745-A (GB)
Title: Arrangement for generating the inverse raman effect
IPC: G01J3/44
Filed: 1973-04-19
Abstract: 1382745 Inverse Raman effect spectroscopy CARL ZEISS JENA VEB 19 April 1973 18948/73 Heading G2J The apparatus comprises a monochromatic light source e.g. laser 2 located separately from a cdntinuum light source 1, a test cell 3 and a spectrometer 7. Light from both sources traverses the cell either in the same direction, Fig. 3 or in different directions e.g. 90 degrees apart, Fig. 1, but only light from the continuum source 1 is directed to the spectrometer 7. In the embodiment of Fig. 1, the continuum radiation is focused by lens 4 to form a narrow pencil which illuminates only that portion of cell 3 in which the laser beam is focused by cylindrical lens 5. In the embodiment of Fig. 3, both forms of radiation are provided with resonator cavities. The cavity for the continuum radiation comprises partially transparent reflectors 11, 12 or opaque reflectors with apertures. The cavity for the laser comprises reflectors 14, 15.
Patent GB-785803-A (GB)
Title: Arrangement for regulating the flow of after-burning fuel in jet propulsion engines having a two stage combustion system
Inventor: CONSTANT RENE
IPC: F02K1/16
Filed: 1955-06-30
Abstract: 785,803. Jet propulsion gas turbine engines. SOC. NATIONALE D'ETUDE ET DE CONSTRUCTION DE MOTEURS D'AVIATION. June 30, 1955 [July 13, 1954], No. 18954/55. Class 110 (3). The fuel supply to a reheat combustion chamber in the jet pipe of a gas turbine jet propulsion engine is controlled by an automatic device which also regulates the fuel flow to the main combustion chamber in such a manner that the fuel flows to the respective combustion chambers are in a substantially constant ratio to one another. Fuel is supplied to the main burners 3 by an enginedriven gear pump 4 through a regulator 7. The regulator 7 comprises a slide valve 9 which is actuated by a lever 14, the position of which is determined by a centrifugal governor 15 and a detector 16 which is responsive to the pressure difference across the compressor 17 which varies with the temperature of the ambient air. The loading of the governor spring 20 may be varied by the throttle lever 22 to control the engine speed. A second slide 10 is controlled by a diaphragm 13 so as to maintain the pressure drop across the valve 9 constant. The supply of fuel to the burners 3 is arranged to be a linear function of the position of the valve 9. The fuel supply to the reheat burners is controlled by a flow regulator 27 which comprises a slide valve 29 which is positively connected to the slide valve 9 by a rod 30. A diaphragm 31 coupled to a slide valve 32 regulates the pressure drop across the slide valve 29 so that the flow through the valve 29 is a linear function of its position. The pressure difference across the valve 29 may be varied by the throttle lever 22 acting on a biasing spring 33. The slide valve 32 may be replaced by a by-pass valve similar to the valve 11. Shut-off cocks 35, 37 may also be operated by the throttle lever 22. The regulator 16 may also be used to control the flaps 39 varying the area of the propulsion nozzle. In a modification, Fig. 2 (not shown), the slide valve 9 is actuated by a pressure detector and a temperature detector located in a chamber to which a pitot tube and a static tube, responsive to the conditions at the compressor intake, are connected. In this arrangement the loading of the spring 12 is varied by the throttle lever 22 and the loading of the spring 33 may be varied or kept constant. In a further modification, the regulator 27 is dispensed with and the fuel supply to the reheat burners 24 is taken from the conduit 6 supplying the burners 3 through an adjustable needle-valve device. The control of the slide valve 9 is similar to that shown in Fig. 1 except that the biasing spring of the valve 10 is actuated by the throttle lever so that the injection pressure remains the same whether the reheat combustion chamber is in operation or not.
Patent GB-709870-A (GB)
Title: Improvements in or relating to overshoes
IPC: A43B3/20
Filed: 1952-07-28
Abstract: 709,870. Moulding galoshes by dipping. GEM RUBBER CORPORATION. July 28, 1952 [Aug. 4, 1951], No. 18967/52. Class 87 (2) [Also in Group VII] An overshoe or galosh has an upper 3 which conforms to the shape .of a shoe substantially up to ankle height with a collar 5 extending continuously around the top of a leg portion 4. This collar flares outwardly and then inwards to its top edge at the rear and may, as shown, be turned down all round to protect the wearer's clothing or only the front portion may be turned down, or the collar may be turned fully up, the shape being such that it is retained in any of these positions. The overshoe is preferably produced from natural rubber latex, synthetic rubber, elastic plastics or like material by dipping a mould, Fig. 6, shaped in conformity with the shape of the overshoe to give the top or collar portion of the upper the set described.
Patent GB-1465322-A (GB)
Title: Facsimile apparatus
IPC: G06T1/00
Filed: 1974-05-01
Abstract: 1465322 Facsimile systems PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 1 May 1974 [4 May 1973] 19064/74 Heading H4F  Facsimile apparatus employs an optical switch comprising a plate 3 (Fig. 1), composed of lead zirconate and lead titanate doped with lanthanum and provided with opposed electrodes 4, 5 the whole being disposed between polarization elements 1, 2. When the latter are "crossed" the application of a voltage between a pair of opposed electrodes allows light, incident in the direction of arrow 8, to pass in the region of the electric field between such electrodes, the transmission of light being arrested by shortcircuiting the electrodes. Each pair of electrodes forms a picture element and one of the sets 4 or 5 may be formed as a single common counter electrode. In a modification (Fig. 2) both sets of electrodes 4<SP>1</SP>, 5<SP>1</SP>, may be disposed on the same face of the plate 3<SP>1</SP> in which case the light is arranged to be incident in the direction of arrow 8<SP>1</SP>. A plurality of the plate and electrode assemblies may be stacked to provide a complete page of image elements. The plate together with the electrodes and the polarization filters may be formed as a composite assembly 9 (Fig. 3) which, for recording received facsimile signals, is illuminated by a lamp 10 whilst the electrodes are serially controlled by the facsimile signals. The line of light spots thus produced is then imaged by lens 11 on a moving photosensitive medium 13 which moves in the direction of the arrow. When the spacing of the picture elements in the assembly 9 provides the required resolution lens 11 may be dispensed with (Fig. 4, not shown). By suitably controlling the electrodes a positive or a negative picture may be produced. For transmission, the electrodes are consecutively energized for short periods (to produce a line scan) and the light diffusely reflected from an original (which replaces the medium 13) is received by a photo-cell 15. The lamp 10 and photo-cell 15 may be interchanged.
Patent GB-1505559-A (GB)
Title: Electric connector assemblies
IPC: H01T13/05
Filed: 1975-05-07
Abstract: 1505559 Two-part couplings ROBERT BOSCH GmbH 7 May 1975 [14 Nov 1974] 19072/75 Heading H2E In the connector assemblies 7, 17 a greater force is necessary to extract the terminal 2 from the socket 3 than to insert it. The sleeve contacts 9 may be such that it is easier to disengage the connector 7 from the sparking plug 13 or the connector 17 from the distributor cap 21 than to disengage one of the sockets 3 from its corresponding terminal 2. The connectors 7, 17 may contain anti-interference resistors (14 in connector 7). In another embodiment (Fig. 2, not shown), where the resistor is not necessary, the terminal 2 may replace the terminal 19 and the intermediate connector is not present.
Patent GB-459293-A (GB)
Title: Improvements in and relating to sails
IPC: B63H9/06
Filed: 1935-07-05
Abstract: 459,293. Sails. PRYOR, T. H., 29, King's Avenue, Falmouth. July 5, 1935, No. 19184. [Class 115] Sails are provided on one or both sides with auxiliary sail flaps 6 one edge of which is attached to the sail whilst the other edge is spaced from the sail surface by means of rods 7, the inner edges of which are united by a plate 8 with dovetailed slot by which runs on a bead on the mast. The rods are braced intermediate their length by transverse brackets which pass through certain of a row of slots 14 provided in the sail for the purpose of allowing wind to pass to the leeward flap.
Patent GB-743141-A (GB)
Title: Improvements in or relating to the purification of alkyl nitrates
Inventor: BENTLEY ROY
IPC: C07C201/02
Filed: 1953-07-10
Abstract: Volatile liquid nitric esters of monohydric aliphatic alcohols are purified substantially from nitrous ester by washing the nitric ester with an excess of an aqueous solution containing urea and a mineral acid in a concetration to cause evolution of gas in the presence of the urea only as long as the nitrous ester is present, and thereafter freeing the nitric ester substantially from said acid and excess urea.  The washing with urea and mineral acid is preferably conducted at about 40 DEG  C. and is preferably preceded by a washing with water.  The mineral acid is preferably nitric acid and the concentration of the aqueous solution in contact with the alkyl nitrate is preferably between 1 and 3 Normal.  The urea and mineral acid are preferably employed in the form of the urea salt of the acid, e.g. urea nitrate, a saturated solution thereof being employed. The examples describe the purification of ethyl, isopropyl and secondary butyl nitrate.
Patent GB-1305922-A (GB)
IPC: C08G18/08
Filed: 1970-02-16
Abstract: 1305922 Synthetic resins DR BECK & CO AG 16 Feb 1970 [18 Feb 1969] 19305/72 Divided out of 1305921 Heading C3R  Solvent-free resins capable of being electrostatically sprayed are prepared by reacting in the absence of water a polyether having an equivalent weight of 60 to 2000 and an OH functionality of 2 to 6, a thixotropic agent, a compound which accelerates the polyaddition reaction between OH and NCO groups, an isocyanate and a monoalcohol having a boiling point of 80‹ to 220‹ C. The reaction mixture may also include a homo- and/or co-polymerizable monomeric compound of boiling point 120‹ to 180‹ C. and a polymerization initiator and a polymerization accelerator for the monomeric compound, a filler, pigment, a substance acting to increase the electrical conductivity of the resin formed, a siccative material and a fireproofing and/or a fire-retarding agent. The polyether may be used in conjunction with up to 60% by weight thereof of another hydroxyl groupcontaining material conventionally used in the polyurethane art, e.g. a polyester. The thixotropic agent is suitably a high-dispersal silicic acid. Suitable monoalcohols are butanols, pentanols, hexanols, heptanols, octanols, benzyl alcohol, methyl benzyl alcohol, the monomethyl ether of ethylene glycol, the mono-ethyl ether of ethylene glycol, ethylene glycol monoacetate, propylene glycol monoacetate and cyclohexanol Coatings may be produced from the solvent-free resins.
Patent GB-900663-A (GB)
Title: Improvements in or relating to relative humidity measuring apparatus
IPC: G01N27/04
Filed: 1960-06-01
Abstract: 900,663. Measuring electrically. SINA A.G. June 1, 1960 [June 8, 1959], No. 19422/60. Class 40 (1). [Also in Group XXVIII] A humidity-sensitive resistor comprises an insulating base 11, Fig. 1, e.g. of quartz, glass, or plastic, having two electrodes 12 and 13, preferably of platinum or gold applied by evaporation, with a rod 14 of insulating material, e.g. quartz, glass or plastic, placed across them. The two wedge-shaped spaces 15 and 16, Fig. 2, formed between the rod and the insulating base, are filled with a salt solution, e.g. 10g. lithium chloride, 1g. polyvinyl alcohol, in 100 ml. water, to form the humidity. sensitive resistive element between the two electrodes. In an alternative embodiment the rod is U-shaped instead of straight, Fig. 3 (not shown), or in a further embodiment the base is a large rod 31, Fig. 4; having two electrodes 32 and 33 connected by a smaller rod 34, the hygroscopic salt solution filling the. wedge-shaped spaces on both sides of the line of contact of the two rods. Mounting and enclosing.-Two humiditysensitive resistors of the type described with reference to Fig. 1 are formed one each side of a base, 11, Fig. 6, which is mounted in a casing 41, 42, one resistor 14a being exposed to the ambient atmosphere but protected from dust by the dust filter 50 (see Group XXVIII). The other resistor 14b is sealed in a chamber 47 together with a number of discs of absorbent fibrous glass 48 soaked in, e.g., a lithium chloride solution to give constant humidity. The two resistors are connected in adjacent arms of a bridge circuit, the resistor 14b providing temperature compensation.
Patent GB-699088-A (GB)
Title: Improvements in and relating to reactors and reactions carried out therein
Inventor: HUEBNER DENIS WILLIAM
IPC: B01J8/04
Filed: 1950-08-04
Abstract: <PICT:0699088/IV (b)/1> The direct hydration of an olefine or carbonylation reactions where an olefine, carbon monoxide and hydrogen are reacted to produce an aldehyde or alcohol, are carried out in a converter which contains at least two separate catalyst beds in series, liquid/vapour contacting means such as bubble caps, arranged between consecutive catalyst beds, and proportioning devices which cause the liquid phase to flow through the converter countercurrent to the gaseous phase, at least partly without contacting the catalyst.  According to an example isopropanol is produced by the hydration of propylene in the converter shown in the Figure where catalyst beds 2 are separated by bubble cap trays 4, and passages 6 permit a regulated quantity of liquid to by-pass the catalyst.  Water and propylene in a ratio of 7 : 1 by weight are fed at a rate of 3 litres per hour per litre of catalyst, which is unsupported pelleted blue oxide of tungsten, at a pressure of 250 atmospheres at 270 DEG  C.  Ten separate catalyst beds of a depth progressively increasing from the top downwards are employed and the bubble trays are arranged so that 10 per cent of the total water fed to the tap of the connecter passes directly over the catalyst. Specification 671,971 is referred to.ALSO:<PICT:0699088/III/1> A converter for reactions between reactants which are at least partly in the gaseous phase in the presence of a liquid reactant and/or solvent and a solid catalyst with which at least the gaseous phase reactant must be contacted, contains at least two separate catalyst beds in series, liquid/vapour contacting means arranged between consecutive catalyst beds and proportioning devices which cause the liquid to flow through the converter in countercurrent to the gaseous phase, at least partly without contact with the catalyst.  In the Figure, liquid material descending the column 1 in countercurrent to ascending gaseous reactants, passes in part through passages 6 without contacting the catalyst beds 2.  A proportion, controlled by proportioning devices (not shown) such as adjustments for the overflow, passes in contact with the gas through bubble caps 4 and through the catalyst.  The converter is particularly applicable to carboxylation reactions wherein an olefine, carbon monoxide and hydrogen are reacted to produce an aldehyde or alcohol, to the hydrogenation of creosote or fuel oil or the direct hydration of olefines such as ethylene or propylene to the corresponding alcohols. An example relates to the production of isopropanol by the hydration of propylene in the presence of a blue oxide of tungsten catalyst employing a pressure of 250 atmospheres and a temperature of 270 DEG C.  Water and propylene in a ratio of 7 to 1 by weight are passed over at a space velocity of 3 litres/litres/hour.  The depth of the beds increases from the top downwards and the bubble trays are arranged so that only 10 per cent of the water passes directly over the catalyst.
Patent GB-470135-A (GB)
Title: Improvements in or relating to the production of safety glass
IPC: C09J131/04
Filed: 1936-07-14
Abstract: A composition for use in the interlayer of compound glass comprises polyvinyl acetate and at least one solvent having a boiling point between 100 and 200 DEG  C. and an evaporation velocity greater than 30 units.  The evaporation velocity is determined by dividing the time of evaporation of 0,5 c.c. of the solvent dropped upon filter paper, by the time of evaporation of the same quantity of ether. Diacetone alcohol, methylcyclohexanone, methylglycol acetate, furfurol, and hydrocarbons, alcohols, glycols and their esters and ethers having the required boiling range and evaporation velocity may be used, and other solvents, diluents, plasticizers, colouring matters, fillers, and opacifying media, e.g. tin oxide or bone ash, may be added.  For example, a small quantity of diacetone alcohol is added to an ethyl acetate solution of polyvinyl acetate and di-methylglycol phthalate, the solution is applied to a glass sheet, the ethyl acetate is removed in vacuo, and the coated glass united with a similarly-coated glass sheet under heat and pressure.