baber/WOPTO huggingface dataset:
Patent GB-873576-A (GB)
Title: Improvements in or relating to methods and apparatus for gas mixture analysis
IPC: G01N21/69
Filed: 1959-02-06
Abstract: 873,576. Photo-electric gas analysis. UNION CARBIDE CORPORATION. Feb. 6, 1959 [Feb. 10, 1958], No. 4184/59. Class 40(3) In an arrangement for determining the proportion of a gas in a gas mixture (e.g. the concentration of nitrogen in an argon-nitrogen mixture) the mixture is excited to produce its characteristic emission spectrum in an electrical discharge tube 10 (Fig. 1) the radiation beam from which after chopping by a rotating disc 28 is optically divided by a beam splitter 30 and directed on to a first photo-electric cell 32, via a filter 37 passing the spectral range characteristic of nitrogen, and on to a second photo-electric cell 34 (an argon spectral range filter being utilized if the concentration of nitrogen is appreciable) the signal produced by which is employed as a reference signal with which the signal output of photoelectric cell 32 is compared in a ratio-recorder 40. The latter automatically adjusts a potentiometer 42 to equalize the two signals and the amount of such adjustment is recorded by the pen of the recorder which records the nitrogen content of the mixture in parts per million. In a second embodiment (Fig. 5), which avoids errors due to unequal performance of the two photo-electric cell channels, the radiation beam from the discharge tube 10 is directed on to a single photoelectric cell 44 over two optical paths the first of which includes a filter 37 passing the spectral range of the nitrogen component and the second of which includes an adjustable optical attenuator 52. Additionally, both paths include a rotating (20 r.p.m.) semicircular shutter 46 having the side opposite the cell 4 silvered. In this manner cell 44 receives radiation, alternately, from the two paths any difference in intensity in which is manifest as a 20 c.p.s. modulation of the signal output from the cell the amplitude of which is proportional to the difference in concentration of the two gases and the phase of which relative to a reference 20 c.p.s. from a generator 60 (driven by the motor 48 which drives the shutter 46) is determined by which of the two beam intensities is the greater. This phase difference is detected in 62 and utilized to adjust the attenuator 52 in the appropriate sense to equalize such difference the amount of adjustment also operating the recorder 64. A simplified embodiment useful for spot checks where absolute accuracy is not necessary consists in filtering out the spectral component of the gas whose concentration is required to be measured and applying the output of a photo-electric cell impinged by such radiation component to a suitable indicator (Fig. 9, not shown). The discharge tube 10 is provided with external electrodes to prevent contamination of the gas mixture thereby and the latter, which may be at atmospheric or higher pressure, may be fed continuously through the tube. A suitable construction of the latter is described with reference to Fig. 2 (not shown).
Patent GB-1418891-A (GB)
Title: Headup display aparatus
IPC: G02B27/00
Filed: 1972-01-28
Abstract: 1418891 Lamps NATIONAL RESEARCH DEVELOPMENT CORP 26 Jan 1973 [28 Jan 1972] 4250/72 Heading F4R [Also in Division G2] A lamp 20 in a head-up display apparatus for a motor car, see Division G2, is mounted in a reflector 24 which comprises annular surfaces 26 centred on the longitudinal axis of the lamp housing, the portions being relatively inclined to approximate to a paraboloidal shape.
Patent GB-726690-A (GB)
Title: Method of bonding plastic parts together
IPC: C08J5/12
Filed: 1953-02-16
Abstract: 726,690. Bonding non-metallic material. LONZA ELEKTRIZITATSWERKE UND CHEMISCHE FABRIKEN AKT.-GES. Feb. 16, 1953 [April 16, 1952], No. 4268/53. Class 42 (1). Plastic parts, the material of which is composed at least in part of polymethylmethacrylate, e.g. the cap and base of a container, are bonded together by swelling at least one of the surfaces to be joined with a solution of trichloracetic acid in a solvent which swells but does not dissolve polymethylmethacrylate, and then lightly pressing the surfaces together. The ensuing joint is stated to be free from cracks and cloudiness. The solvent for the trichloracetic acid may be glacial acetic acid or some other low molecular weight fatty acid such as propionic or butyric acid.
Patent GB-446547-A (GB)
Title: Improvements relating to relaxation oscillation generators for use with cathode ray tubes
IPC: H04N3/20
Filed: 1935-02-11
Abstract: 446,547. Generating circuits using gas-discharge tubes; television. RADIOAKT.-GES. D. S. LOEWE, 10, Wiesenweg, Steglitz, Berlin. Feb. 11, 1935, Nos. 4317 and 4318. Convention dates, Feb. 12, 1934 and April 19, 1934. [Classes 40 (iii) and 40 (v)] In a relaxation oscillator, the relaxation condenser is shunted by an auxiliary gas discharge tube whose ignition potential is greater than that of the main discharge tube before the cathode of the latter has reached its operating temperature, and whose quenching potential is greater than the ignition potential of the heated main tube. The auxiliary tube has a cold cathode or one with substantially no thermal inertia and a discharge passes therethrough until the main tube has reached operating temperature thus protecting the relaxation condenser from excess voltages. The discharge current in the auxiliary tube may be used to disable an associated cathode ray tube until scanning voltages are being generated, to prevent burning of the screen. Thus the auxiliary tube 5, Fig. 1, connected in parallel with the main tube 4 and relaxation condenser 3 is connected in series with a relay winding 6 which when energized opens the anode circuit 7, 8 of an associated cathode ray tube. In a second embodiment, Fig. 2 (not shown), the discharge current from two auxiliary tubes connected to two associated relaxation oscillators traverses a common resistance to produce a blocking bias for the control electrode of the cathode ray tube. In a similar embodiment, Fig. 3, an auxiliary tube 19 is common to two relaxation oscillators 2, 3, 4 and 2<1>, 3<1>, 4<1>, a common tubular cathode 21 co-operating with separate anodes 20, 20<1>. The commencement of a discharge between these electrodes initiates a discharge current between the electrode 21 and a further electrode 22 which traverses a biassing resistance 23 to block the control electrode 15 of the cathode ray tube. The Specification as open to inspection under Sect. 91 comprises also a circuit in which the auxiliary discharge tube is arranged to produce relaxation oscillations until the main tube is functioning. This subject-matter does not appear in the Specification as accepted.
Patent GB-548270-A (GB)
Title: Improvements in or relating to supercharged internal-combustion engines
IPC: F02B29/04
Filed: 1941-03-31
Abstract: 548,270. Charge, cooling. SHELLEY, T. March 31, 1941, No. 4318. [Class 7 (ii)] In a supercharged aircraft or other engine, the supercharger delivers combustion air to a trunk conduit 10 having branches 11 leading to the engine cylinders and each branch is provided with an air cooler through which liquid is circulated to and from a radiator. As shown, the induction system is arranged to fit into the space between the cylinder blocks of a V engine and each branch 11 is fitted with an air-cooler casing 12 and induction manifolds 15, 16 for the two cylinder blocks. An air-cooler in each casing 12 extends into the branch 11. Each cooler comprises headers 17, 18 connected by plates 19 to form a box open at top and bottom and the headers communicate through flattened tubes 20, 21 each divided by a corrugated strip into a number of narrow passages. The tubes are threaded through slots in thin plates 41 and a baffle 42 is provided. Liquid is circulated through the tubes from an air-cooled radiator through the sections 29 of a main flow pipe, branches 33 and pipes 27 to the upper parts of the headers 17, and from the lower parts of the headers 17 through pipes 25 and the sections 291 of a return main to the radiator.
Patent GB-495250-A (GB)
Title: Apparatus for ventilating gas protection chambers in conjunction with means for determining the rate of airflow
IPC: A62B13/00
Filed: 1938-02-11
Abstract: 495,250. Flow meters. BURGESS, A. F. (Piller Maschinenfabrik, A.) Feb. 11, 1938, No. 4338. [Class 69(i)] [Also in Groups X and XIX] In a device for supplying filtered air to gas protection chambers, and comprising a fan casing 2 and filter 1, means for indicating the rate of air flow is interposed between the filter and fan and is capable of rotation or adjustment so that its indications may be easily seen. Differential pressure compartments 13, 14 are formed by a baffle 15 in a short conduit between the fan and filter, and connecting pipes 16, 17 lead from the compartments 13, 14 to each end of a glass tube 5 in which is a float 7a moving vertically in the tube. The various positions of the float are marked by rings 1a of luminous paint, the float itself having a band 8a and its point similarly painted. By loosening a set screw 12, the connecting piece 4 and gauge 5 may be moved to be at an appropriate angle say 45‹ to the crank handle K, so that the indication on the gauge 5 may easily be read. Current generated by a dynamo coupled to the fan may be used in an electric lamp which serves to show when the fan is operating. Fig. 8 shows a flow indicator comprising a U-tube in which balls 10a provided with a luminous composition float on the surfaces of liquid in the tube.
Patent GB-771902-A (GB)
Title: Improvements in or relating to differential pressure gauges
IPC: G01L7/00
Filed: 1955-02-14
Abstract: 771,902. Pressure gauges; indicating apparatus. MECHANISM, Ltd., and GRANDIDGE, J. E. Nov. 29, 1955 [Feb. 14, 1955], No. 4363/55. Classes 106 (2) and 106 (4). The indicating movement for a diaphragm pressure gauge comprises a rotary driver 5, Fig. 1, driving e.g. by means of a contrate quadrant 6, Fig. 2, and pinion 7, the spindle for the pointer 9, a lever 4 fixed to the driver 5, and a push-pull link 3 connecting the lever 4 to the diaphragm 1, preferably by means of an arm 2 parallel to the plane of the diaphragm, pivot-pin joints being provided to allow for the arc of the lever. The effective lengths of the arm 2 and lever 4 may be adjustable, and the lever 4 may be angularly adjustable relatively to the driver 5. Stop means 11 may be provided to affect the effective area of the diaphragm after a predetermined movement to provide a non-linear scale.
Patent GB-973111-A (GB)
Title: Complex metal compounds of water-insoluble azo-dyestuffs and processes for their manufacture
IPC: C09B45/14
Filed: 1961-02-06
Abstract: The invention comprises metal complexes of water-insoluble dyes of formula <FORM:0973111/C4-C5/1> where X is a carbonyl or sulphonyl group, R1 and R2 are alkyl, aryl, cycloalkyl or aralkyl groups, or together with the N atom form a heterocyclic ring, nucleus a may be further substituted, A is the residue of a component coupling adjacent to the OH group with the exception of arylamides of aromatic and heterocyclic o-hydroxycarboxylic acids and n is 1 or 2. The dyes may be made in conventional fashion by metallizing appropriate dyes formed in substance, or on the fibre or some other substratum. Indicated substituents for the diazo components are halogen atoms and nitro, alkyl, alkoxy, acyl, alkylsulphone, arylsulphone, carboxylic acid amide and sulphonic acid amide groups.  Representative of indicated coupling components are 4 - hydroxy - 1,2 - xylene, 4 - hydroxy - benzophenone, 4 - methoxyphenol, 4 - chloro - 1 - naphthol, 7-methoxy-2-naphthol, 1-benzoylamino - 7 - naphthol, 4 - phenylazo - 1 - amino - 7 - naphthol, 6 - hydroxyquinoline, 2 - hydroxycarbazole, 3 - hydroxydiphenylene oxide, 1 - aryl - 3 - methyl - 5 -pyrazolones, acetoacetic acid arylides, 4 - benzoyl - resorcinol, phloroglucinol and 2,6 - dihydroxynaphthalene.  Preferred metals are copper, cobalt, nickel, iron and manganese.  Vegetable fibres, including regenerated cellulose, animal fibres, e.g. wool and silk, and synthetic fibres, e.g. polyamide and polyvinyl alcohol fibres, may be coloured. Examples are provided of the preparation of the dyes, and their use in colouring cotton in orange and brown shades, methyl, methylphenyl, benzyl and piperidide being representative of the R1 and R2 values of the dyes obtained.
Patent GB-1013738-A (GB)
Title: Improved apparatus for transversely shaping the end face of a tube during profiling to fit against another tube
IPC: B23K7/00
Filed: 1963-02-04
Abstract: 1,013,738. Cutting by fusion. H. R. MORGAN. April 29, 1964 [Feb. 4, 1963], No. 4474/63. Heading B3V.  In a flame-cutting machine for profile cutting the end of a tube 1, the cutting torch 2 is mounted to swivel on a pin 4 as cutting proceeds so as to provide a bevel on the cut edge. The torch 2 is carried by a bracket 3 pivoted on pin 4 secured to a slide bar 5 which provides the longitudinal movement of the torch. A slotted arm 7 of the bracket engages a fixed pin 8, whereby the bracket 3 is caused to swivel by the longitudinal movement of bar 5. The tube 1 is rotated during cutting. Alternatively, the tube may be both rotated and moved axially during cutting and the pin 8 then moves with the tube to produce the swivel movement, or the tube may be fixed whilst the torch is rotated and moved axially.
Patent GB-1146942-A (GB)
Title: Clutch release for tractors employing a plough or like implements
Inventor: NICOL ALISTAIR DICKSON
IPC: A01B61/00
Filed: 1967-01-31
Abstract: 1,146,942. Tractor control apparatus. WILLIAM NICOL & SONS. 19 Jan., 1968 [31 Jan., 1967], No. 4559/67. Heading B7H. In a tractor overload release mechanism, a clutch pedal 4 is actuated by a spring 14 acting through cranks 13 and 12 rigid with a common shaft 6, and links 2. Rotation of the shaft 6 is normally prevented by a crank 7, rigid with the shaft and bearing upon a catch member 9. The catch member 9 is connected through a link 18 and crank 19 to a link 17 which is moved forwardly if an implement towed by the tractor encounters an obstruction, whereby the catch is released and the clutch pedal depressed. The shaft 6 and the pivot 10 of the catch are mounted in arms 5a extending upwardly from the tractor footboard 1 upon which the clutch pedal 4 is also mounted. Upon an extension of the shaft 6 is mounted an arm 15 which may be engaged by a lever 16 for re-setting the catch. The catch 9 is biased by a spring 11.
Patent GB-789300-A (GB)
Title: Improvements in and relating to reducing valves
Inventor: BAILEY DONALD
IPC: G05D16/06
Filed: 1955-02-16
Abstract: 789,300. Fluid-pressure servomotor-control systems; valves. BAILEY & CO., Ltd., Sir W. H. Feb. 6, 1956 [Feb. 16, 1955], No. 4565/55. Class 135. In a pressure reducing valve having a passage allowing steam pressure at the outlet (not shown) to act on the valve regulating device 12, the passage 17, 20 contains a cavity 18 closed by a plug 22 in an easily accessible position, whereby the valve can be used with its outlet pressure operating the regulating device or, by closing the portion 17 of the passage connecting the cavity to the outlet, and connecting the cavity to a delivery pipe at a remote point, the pressure at the delivery pipe will operate the regulating device. Variations in the pressure at the valve outlet act via passage 17, 20 on a spring-loaded diaphragm 12 to actuate a pilot valve 13 whereby pressure from the valve inlet (not shown) via passage 16 passes to a cylinder 10 to operate the main regulating valve. By removing the plug 22, screwing the plug 24 into the threaded portion 19 of the passage 17 and connecting the cavity 18 to a remote point in the delivery pipe, the main valve is regulated to keep the pressure at the remote point constant. The plug 24 may be provided with a bleed.
Patent GB-1411718-A (GB)
Title: Electro-optical viewing device
IPC: G02B23/16
Filed: 1973-01-30
Abstract: 1411718 Viewing assembly S R CAPSEY (International Telephone & Telegraph Corp) 30 Jan 1973 4595/73 Heading H4F Image intensifier viewing assembly for low light levels or infra-red radiation comprises a housing 10 in which an image intensifier 18 with its power supply circuit 25 is rigidly mounted, e.g. embedded in a hardened epoxy resin 26, an adjustable focus objective lens system 30 being detachably mounted on the housing at the input end, and an adjustable focus eyepiece system 24 being detachably mounted on the housing at the viewing end. The image intensifier includes a planar fibre optic faceplate 14 with a photocathode 16 on its internal face, a micro-channel plate electron multiplier 18 and an output fibre optic bundle display screen 20 with a phosphor coating on its inner face and having a 180 degree twist. The power supply circuit includes an oscillator, voltage multiplier and internal leads and supplies direct voltages to the photocathode, electron multiplier and phosphor coating. By precise optical measurement techniques during the potting of the housing and intensifier as an integral unit, a collimation adjustment is made before the resin 26 hardens to provide axial alignment. Interchangeable eyepieces 24 are screw-threaded 32 on to the housing, the threaded engagement providing adjustable focusing. The objective lens assembly 30 is secured to the housing by a collar 36, accurately collimated by screws 38 and plate 48 with the housing-intensifier unit, and including a focus adjustment ring 40 rotatably mounted thereon. Focus adjustment may be effected between two fixed positions at which ball 52, which rides on a cam surface 54, engages respective detents therein. Two such viewing assemblies may be adjustably mounted on a frame adjacent each other to form a binocular viewing device, close targets being illuminated by an infra-red source mounted on the frame.
Patent GB-266370-A (GB)
Title: A new dielectric product and process for manufacturing same
IPC: H01B3/48
Filed: 1927-02-18
Abstract: 266,370. Mauillefarine, A. Feb. 18, 1926, [Convention date]. Condensers.-Dielectric material is made by immersing wood in a hot bath of substances obtained from bituminous shales and gradually increasing the temperature of the bath. The wood may be first dyed to resemble ebonite. The wood may be treated by the simultaneous application of the whole of the bath, or a portion thereof may be first placed in the vat and the remainder added in successive stages, the temperature being gradually increased. In the process described, chestnut or witch wood is dyed black in a bath of basic black dye, acetic acid and sodium chloride, dried, and then immersed in a bath of melted ozokerite, mineral tallow, or similar substances obtained from bituminous shales, at a temperature of 150‹ C. The temperature is raised to 300‹-350‹ C., and the wood left in the bath from 3 to 4 hours. It is then withdrawn and allowed to dry in cold air. Articles made from the wood are varnished with shellac spirit varnish.
Patent GB-1364020-A (GB)
Title: Vessel assemblies
IPC: A47J41/00
Filed: 1972-02-01
Abstract: 1364020 Stoppers &c THERMOS Ltd 1 Feb 1972 [2 Feb 1971] 4641/72 Heading B8T [Also in Division F4] A container 11 has an outer housing 13 and an inner double walled glass filler 12 fitted with a plastics liner 22 and is closed by a screw threaded stopper 28 having a frusto-conical seating surface 35 (Fig. 3) which abuts a similar sealing surface 33 on the liner 22. The two sealing surfaces are inclined to each other so that as the stopper is screwed down, by threads 31, 32 on the stopper and liner respectively, the surface 33 yields and deforms to the contour of surface 35 to form a liquid tight seal. In another embodiment (not shown) the stopper comprises a bung and a cylindrical skirt part surrounding the bung and which is internally threaded to engage external screw threads on the liner which in the case envelops the upper part of the filler.
Patent GB-372420-A (GB)
Title: Improvements in means for securing motor car radiator caps from loss or theft
IPC: F01P11/02
Filed: 1931-02-14
Abstract: 372,420. Preventing theft of radiator caps. DAVY, S. J. E., 140, Newington Causeway, London. Feb. 14, 1931, Nos. 4678 and 5473. [Class 79 (iii).] To prevent theft of the radiator cap on a motor car, the shank of a mascot or thermal indicator passing through the cap is provided with a swivel member anchored to the interior of the radiator. The swivel member may comprise a plate 18, Fig. 3, a collar 22, Fig. 4, or a cup-shaped combination of the two as shown in Figs. 1 and 2. The plate 18 is m unted between a flange 16 and washer 17 on an externally-threaded sleeve 15 secured on the threaded shank 3 of a mascot &c. 14 by a nut 6, removal of which is prevented by burring the end of the shank. The collar 22 is mounted on a plain spacing sleeve 20 secured on the shank 3 by a nut 6 with washer 21. In the form shown in Figs. 1 and 2, the swivel member 7 is secured on the shank by a flanged sleeve 5 secured by a nut 6 with or without an interposed spring or other washer ; the nut 6 being surrounded by the member 7, a special spanner is necessary for removal thereof. The anchoring means comprises a chain 10 secured to the looped and riveted end of a metal strip 11 the other end of which is preferably secured by being bent over the end of the radiator intake pipe 12 before attachment of the rubber jointing tube 13. The chain 10 may be attached to a dependent arm on the swivel member in the forms shown in Figs. 3 and 4 or to a stirrup extension 9 of the cup-shaped member 7 in Figs. 1 and 2. In a further modification, an eye is provided on the side of the member 7 instead of the stirrup 9 and in this form the flanged sleeve 5 is threaded on to the shank 3.
Patent GB-638947-A (GB)
Title: Improvements in or relating to air conditioning apparatus
IPC: F25B30/06
Filed: 1948-02-18
Abstract: 638,947. Refrigerating; heat pumps. WEBBER, R. C. Feb. 18, 1948, No. 4726. Convention date, Jan. 5, 1946. [Class 29] Air heating or cooling apparatus comprises two heat exchange units, one 4, 5 being arranged in an air duct 21 and the other, 10, 11, 12 being buried in and having its walls in intimate contact with the earth, a compressor 1 for circulating a refrigerant through the units, and means for effecting evaporation of the refrigerant in one of the units. For heating the air the unit 4, 5 acts as a condenser being supplied with refrigerant from the compressor through pipes 3, 3a, the condensed refrigerant passing to a reservoir 7, a dehydrator 8, and through thermostatic, expansion valves 16 to the evaporators 10, 11, 12 in parallel, with cross-bars 17 welded to the coils to increase the surface. The coils may be buried at different levels. The heated air may be humidified. For cooling the air, valves 21, 25, 27<SP>1</SP>, 28<SP>1</SP> and 34<SP>1</SP> are closed and valves 22, 24, 26, 28, 30, 31<SP>1</SP>, 32, 33 and 34 opened so that the discharge from the compressor 1 passes through pipe 27 to the coils 10, 11, 12 which act as condensers, the condensed refrigerant flowing through pipes 29, receiver 7, dehydrator 8, pipe 31 and expansion valve 36 to the evaporator 4, 5. The apparatus may be thermostatically controlled.
Patent GB-539463-A (GB)
Title: Improvements in gauges for measuring and checking dimensions and forms
IPC: G01B3/42
Filed: 1940-03-18
Abstract: 539,463. Gauges. OSWIN, J. March 18, 1940, No. 4966. [Class 106 (ii)] The gauging surfaces of precision gauges are protected against wear at one or more places by means of inserts of hard wearresisting metal or alloy. In the form shown in Fig. 3 a plug gauge is fitted with staggered inserts a parallel to the axis of material known under the Registered Trade Mark " Stellite." The inserts may not be staggered but extend the full gauging length of the gauge. The gauging surface may be hollowed out between the insertions or arranged in spiral lines or as a series of pins. Ring gauges may be similarly provided with inserts and plug screw gauges may have the end of the leading thread formed with an insert of hard material. The invention may be applied to the gauges described in Specification 520,065.