baber/WOPTO huggingface dataset:
Patent GB-1493509-A (GB)
Title: Ionization type smoke detectors
IPC: G01N27/66
Filed: 1975-04-17
Abstract: 1493509 Ionization chambers HOCHIKI CORP 17 April 1975 [18 April 1974 12 Dee 1974] 15952/75 Heading H1D An ionization chamber smoke detector comprises a metal cup outer electrode 10 housing a second metal electrode 11 dividing ihe interior space into upper and lower parts 10a, 10b; openings 10c in the upper part of the cup allow air currents to enter and to circulate round core 14 before the air drifts through openings 11a in electrode 11 into the lower part 10b acting as the measuring chamber where a radioactive source RI (lower), e.g. Am<SP>241</SP> ionizes the air. If the metal of the chamber, normally attached to a ceiling, is cooler than the air, moisture in the air will condense in the upper chamber, drying the air and warming the thermally conductive metal throughout, so preventing condensation in the lower part. The core 14 of the upper part may contain a sealed reference chamber comprising wall 14a, third electrode 15 and radioactive source R.I. (upper); the second electrode then acts as the tapping on a potential divider partitioning the supply, e.g. 17 V., potential between electrodes 15 and 10 according to the ionic drift current in the measuring chamber. The drift current is largely insensitive to external air velocity up to 8 m./s. (see Fig. 13, not shown, compared with Fig. 11, not shown); the time to respond to smoke falls as the external velocity rises towards a typical value in a fire of 0À25 m./sec. (line y in Fig. 12, not shown). Other embodiments show variations in the openings lla, in some cases with rims turned up partially blocking openings 10c in the cup. In some embodiments the function of a dividing plate having openings of the second electrode are separate, with two parallel metal plates being provided, and in some electrode 10 is double walled.
Patent GB-420609-A (GB)
Title: Improvements in and relating to carburetters
IPC: F02M1/00
Filed: 1933-06-02
Abstract: 420,609. Spray carburetters. BROWN, C., 19, Trinity Road, Birchfield, and AMAL, Ltd., Holford Works, Perry Barr, both in Birmingham. June 2, 1933, No. 16024. [Class 7 (iii)] To prevent backfiring through the carburetter, a delay-action device is connected to the throttle lever to control the speed of opening of the throttle valve 10. When the accelerator pedal 11 is depressed, a plunger 21 compresses a spring 18 in a sleeve 17 which, through a link 15, connected to a bell-crank lever 8, opens the throttle valve. The speed of opening is controlled by a calibrated orifice 6 through which fuel is forced from a cylinder 2 into a float chamber 3 by a piston 4 connected to the bell-crank lever 8. The fuel forced into the float chamber raises the liquid level and subjects the jets temporarily to a higher pressure, thereby assisting acceleration.
Patent GB-181377-A (GB)
Title: Improvements in combustion turbines
IPC: F01D5/08
Filed: 1922-06-09
Abstract: 181,377. Dufour, L. June 10, 1921, [Convention date], Impeller blades. - The blade-wheels of axialflow combustion turbines are constructed to act also as centrifugal compressors for compressing comparatively cool air and gases which in passing cool the blade-wheels. Each wheel b<1> . . b<5> is formed like a centrifugal impeller with a disc b, Fig. 3, having ribs or blades c<1> on which a disc i is shrunk or screwed. Each wheel carries (1) radially projecting blades f co-operating with the axial-flow nozzles m, and (2) continuations of these blades with or without other blades which suck air or gases from a central eye e and deliver it through diffuser blades and passages to the eye of the next wheel, partitions r, Fig. 2 separating the compressor part of the casing from the turbine part m. Air for combustion is drawn in through an inlet i<3>, compressed by the wheels b<3>, b<2>, b<1>, and led by an outlet i<4> to the combustion chambers. The hot gases flow through the series of guide-blades m and blade-wheels, and are discharged at a sub-atmospheric pressure through an outlet o to a cooler, after which they are led through a passage i<1> and compressed by the wheels b<5>, b<4> up to atmospheric pressure, discharging through an outlet i<2>. The wheel blades may be inclined to the radius, Fig. 14, and given different lengths a, a<1>, a<2>. They may be secured to the discs b, i, Fig. 5, by one or more pairs of lugs. o and distance-pieces engaging the same grooves.. 'There may be several blade-wheels in each pressure stage. External compressors may be used in combination with the blade-wheels, and portions only of the air or gases may be handled by the blade-wheel compresors. Blades with an inlet angle of at least 40‹ are used for certain pressure stages. By multiplying the partitions r, Fig. 2, there may be provided two or more turbine sections separated by compressor sections.
Patent GB-808222-A (GB)
Title: Fluid temperature control device
Inventor: CATE PAUL E
IPC: F16K31/02
Filed: 1956-05-25
Abstract: 808,222. Automatic temperature control systems. ROBERTSHAW-FULTON CONTROLS CO. May 25, 1956 [Sept. 2, 1955], No. 16244/56. Class 38 (4). [Also in Group XXIX] In an arrangement for controlling the temperature of a mixture of fluids of different temperatures comprising a pair of valves controlling the inflow of the fluids to a passage, the valves are controlled by a member movable in response to variations in the temperature condition in the passage so that when one is closed the other is open and vice versa. The hot and cold water supplies are connected to nipples 12 and 14, Fig. 1, and their connection to the outlet passage 22, Fig. 2, in the casing extension 26 is regulated by solenoid-controlled valve members 48, 50 co-operating with seats 36, 38 around openings 32, 34 in accordance with the temperature sensed by a bi-metal thermal element 106. With the needle valve 62 closed, the valve body 48 is held against its seating by the pressure in chamber 78 established through bleeder 81 in the diaphragm 44, the chamber 54 on the other side of the diaphragm being connected to the inlet 14 by a hole 52. The pressure in chamber 78 is released by the opening of valve 62 by the solenoid 88 and the main valve is opened to connect inlet 14 to the main through passage. The bi-metallic element 106, Fig. 3, which is arranged to operate a single-pole, double-throw microswitch 124 to actuate one or the other solenoids may be adjusted by rotating lever 133 to give a desired temperature of mixture and the outflow is maintained constant by a constant flow valve 138, 140, 142. Alternative temperature-sensitive arrangements comprising a wax fusion type element and a temperature-sensing bulb and bellows are described with reference to Figs. 5 and 6 (not shown).
Patent GB-1384596-A (GB)
Title: Pyroelectric polymeric films
IPC: H01L37/02
Filed: 1972-04-07
Abstract: 1384596 Read only stores KUREHA KAGAKU KOGYO KK 7 April 1972 [8 April 1971 27 April 1971] 16270/72 Heading G4A [Also in Division H1] A pyroelectric element comprises a polymer film in which localized regions have different degrees of stable pyroelectricity. The polymer may comprise polyvinylidene fluoride, a copolymer of vinylidene fluoride, polyvinyl fluoride or pyroelectric crystal powder dispersed in a polymer and is preferably monoaxially stretched polyvinylidene fluoride. To manufacture the pyroelectric element, pairs of electrodes may be applied to opposite surfaces of the film at different locations and the assembly heated at a temperature between 40 C. and the softening point of the resin while different potentials are applied across the various pairs, producing different degrees of pyroelectricity. Alternatively, as shown, separate electrodes 3a, 3b, 3c on one side of film 1 co-operate with a common electrode 2 on the other side. A single pair of electrodes may be applied to different locations of the film or the film moved relative to the electrodes, different potentials being applied at each location, the film being preheated or the electrodes being heated, e.g. they may be heated rollers. Alternatively a uniform voltage may be applied across one pair of electrodes or a set of electrodes and the temperature varied, e.g. by varying the degree of infra-red irradiation. A combination of the two methods may be employed. In another embodiment, the film is treated to provide uniform pyroelectricity which is then locally decreased, e.g. by heating at a temperature higher than that used in the pyroelectrification process while one electrode is earthed. The pyroelectricity may include an unstable component which may be removed by heat-treatment at between ambient temperature and the softening point of the polymer with the opposite surfaces of the film earthed, or by repeated heating and cooling within that range, or by exposing to moisture. The electrodes may be metal or carbon deposited on the film or may be separate. - A transparent NESA glass electrode may be used in conjunction with a mask and infra-red irradiation whereby the non-uniform pyroelectrification represents an image (Figs. 4a, 4b, not shown). Alternatively a film having a large number of small pyroelectrified portions can be used for thermography. The variable voltage applied to a uniformly heated strip may comprise signals to be stored and read off by means of the pyroelectric current obtained when the temperature is changed (Figs. 10 and 11, not shown). The pyroelectric elements of the invention also exhibit piezoelectricity and are also said to be sensitive to light and laser beams.
Patent GB-871400-A (GB)
Title: Improvements in or relating to pressure relief valves
Inventor: SEED DANIEL
IPC: F16K17/168
Filed: 1958-05-21
Abstract: 871,400. Valves. KIDDE CO. Ltd., WALTER. May 15, 1959 [May 21, 1958], No. 16295/58. Class 135. A pressure relief valve for inflation bags, e.g. an inflatable dinghy, comprises body parts 1, 2 screw-threadedly connected together to clamp therebetween the dinghy material 3 and a sealing diaphragm or closure member 6 pressed by a light spring 7 against an annular seat 5 on the body part 1. The diaphragm is bonded to a ring 8 screw-threadedly attached to a housing 9 secured to the body part 2 to form a chamber 9a isolated from the dinghy but open to the atmosphere through a tubular guide member 11 and a passage 12. When gas pressure within the dinghy acting on an outer zone 17 of the diaphragm together with atmospheric pressure acting on an inner zone 14 exceeds atmospheric pressure acting over the whole lower face of the diaphragm assisted by the spring 7 the valve opens to expel gas through a passage 15. The passage 15 is provided with a socket 16 to which a bellows may be attached to top-up the dinghy as and when required.
Patent GB-624251-A (GB)
Title: Improvements in and relating to the construction of floors
IPC: E04F15/022
Filed: 1947-06-20
Abstract: 624,251. Floor sections. COLE, W. E. June 20, 1947, No. 16378. [Classes 20(iv) and 87(i)] A prefabricated floor section comprises a rectangular panel supported on a rectangular base. The base B comprises timber corner blocks 10, timber intermediate blocks 12 and length 14 of a timber substitute, all these being screwed or glued together. The panel P comprises a slab 16 of a timber substitute with wooden battens 18 fixed to its underside. The timber substitute is of softer material than the blocks 10, 12 and may be made of bonded sawdust. The material sold under the Registered Trade Mark " Plimber " is stated to be satisfactory. The battens 18 define wiring channels 20 aligned with openings 22 in the lengths 14. The sections are laid with the necessary shorter sections in staggered courses like brickwork. The lengths 14 and the edges of slats 16 are protected by timber strips or beads 24. The panel preferably protrudes beyond the base to avoid direct contact between the beads on the panel and on the base and to provide a space in which locking means are provided consisting of pins 26 secured to plates 30 on the corner pieces 10 and engaging bayonet slots 28 in plates 30 screwed to the blocks 12 which are hollowed out behind the plates. The blocks 10 are similarly hollowed out to receive the inner ends of the pins 26 and the securing nuts 32. A modified form of flooring section is square in shape with corner blocks of triangular section, with pin and hole locking means adapted, by arranging the arcs of the holes and pins out of parallel, to produce a wedging effect when the pins are engaged in the holes. The arrangement and shape of the battens may be varied. For permanent flooring the panels may be fixed to the bases by screws or glue. To increase the rigidity of the structure the blocks 12 may be joined by cross members 9 of suitable timber substitute.
Patent GB-414671-A (GB)
Title: Improvements in means for preventing or curing sickness particularly sea-sickness
IPC: A61F13/12
Filed: 1932-12-02
Abstract: 414,671. Hats &c. PUPIER, A., 15, Rue Michel-Ange, Paris. Dec. 2, 1932, No. 16395/34. Divided on 412,974. [Class 63.] A heating-device for preventing sickness consists of a heating element provided with a support having a thin portion extending therefrom, and an article of head-wear to which the thin portion is attached in such a manner that when the head-wear is placed on the head in an ordinary position, the heating device may rest against the occipital foramen. The heating element, preferably in the form of a segment of a circle, may be rigid and shaped to fit the head, or flexible, when it may be supported by springs, whalebone, &c., or deformable, and may comprise a plate enclosed in a support of cloth, leather, &c. The head-wear may be of any kind, e.g. a cap, hat, beret, bonnet, turban, or head-band, which may be fitted with an eyeshade or a net covering the top of the head. The support may be detachably secured to the head-wear by means of buttons, press-studs &c. which are fitted on the thin portion of the support, or the thin portion may be sewn to the inside of the headgear, and the heating device folded inside when not in use. In the arrangement shown, the heating element 2, which may be an electric resistance, is withdrawn by opening the press-studs 1<a> in the lower edge of the support. The press-studs 14 are opened to detach the lower edge of lining 13 from the cap 12 and the support 1 may be folded by its thin portion 3 inside the cap into the position 1<b>, and the press-studs refastened. The heating element may consist of a hollow member containing a heated fluid, or of an electric resistance which may be placed temporarily or permanently within the support. Current may be supplied by suitable batteries or a low-voltage transformer, and a rheostat may be provided to regulate the temperature. The resistance may also be subdivided into several groups which are connected to tappings on the transformer to regulate the temperature. Specification 412,974 is referred to.
Patent GB-598467-A (GB)
Title: An improved method of heat treating ferrous metal for drawing operations thereon
IPC: C21D1/46
Filed: 1943-10-09
Abstract: In the heat treatment of ferrous metal prior to drawing, the metal is drawn through a high temperature fused salt bath at a temperature of 1500-1700 DEG  F. and then through another fused salt p  bath at a temperature of 900-1100 DEG  F., a light coating of the salts of the two baths being retained on the metal as it leaves the second bath being adapted to serve as a lubricant-retaining coating.  The metal may be washed in an aqueous bath containing the same salts as the first two baths and then passed through a fused nitrate bath to provide a lubricant-retaining film or coating.  The high temperature bath consists of alkali metal chloride or chlorides or alkali metal carbonate or carbonates and an alkali metal fluoride, an example of such a bath containing 25-45 per cent of potassium chloride, 35-55 of sodium chloride and 1-5 of sodium fluoride.  The lower temperature bath is made up of an alkali metal hydroxide, an alkali metal fluoride and an alkali metal cyanide with or without an alkali metal chloride and carbonate, an example of such a bath containing 25-50 per cent of sodium hydroxide, 5-20 of sodium chloride, 15-35 of sodium carbonate, 10-17 of sodium fluoride and 7-20 of sodium cyanide. The nitrate bath comprises sodium nitrate and potassium nitrate in equal proportions heated to 600-900 DEG  F. or equal proportions of sodium nitrate and sodium hydroxide heated to 900-1000 DEG  F. Specification 598,466 is referred to.
Patent GB-1150000-A (GB)
Title: Fuel discharging machine for a nuclear reactor
Inventor: BREGEON LOUIS
IPC: G21C19/06
Filed: 1968-04-05
Abstract: 1,150,000. Fuelling reactors. COMMISSARIAT A L'ENERGIE ATOMIQUE. 5 April, 1968 [6 April, 1967], No. 16606/68. Heading G6C. A reactor comprises a pressure vessel 18 housing a core cooled by heavy water circulating through inlet and outlet ducts 26, 28 and is disposed in a pool 10 of light water surrounded by concrete 12. To refuel the reactor a machine A carried by a travelling crane 30 is aligned with and sealed to a chimney 20 upstanding from the vessel 18. The seal is established between shaped ends 50, 54 after removal of a cap 24 and is bounded by closure valves 22, 52. A fuel assembly 38 may be raised by a grab (Fig. 3, not shown) into a lower part 46 of the machine A. A heat exchanger 36 immersed in the pool 10 is connected between the upper and lower ends of the part 46 whereby heavy water from the reactor in the part 46 circulates by natural convection and cools the fuel assembly.
Patent GB-735147-A (GB)
Title: Variable speed driving mechanism
Inventor: SMITH EDWIN ROY
IPC: F16H3/72
Filed: 1953-06-16
Abstract: 735,147. Variable-speed gearing. SENECA FALLS MACHINE CO. June 16, 1953, No. 16610/53. Class 80 (2). Variable-speed gearing comprises a bevel epicyclic train of which the suns 30 and 31 are fast with the aligned input and output shafts 10 and 12, while the casing 20 carrying the planets 32, 33 has fast therewith a spiral gear 40 engaging a spiral gear 41 driven through a belt 42 by a variable-speed motor M2, which may be reversible. The gears 40, 41 are of approximately equal diameter, and their pitch angles are such that they are non-reversible by a small margin only, while their speed ratio is approximately unity.
Patent GB-677134-A (GB)
Title: Improvement in turbine bladings
IPC: F01D5/28
Filed: 1949-06-22
Abstract: A method of manufacturing turbine blading comprises preparing a complete carbide solid solution of titanium carbide and at least one carbide of molybdenum, tungsten, tantalum, niobium and zirconium, powdering the solid solution and compacting the powder to form a porous preshape and sintering the preshape, a cementing metal comprising nickel or cobalt, or nickel and cobalt with or without up to 30 per cent chromium, being included in a proportion between 50-5 per cent of cementing metal to 50-95 per cent of carbides, in the porous preshape.  It is preferable that the carbides dissolved in the titanium carbide should not exceed one-third of the weight of the carbide solid solution.  If titanium and molybdenum carbides alone are used they may be present in equal quantities by weight but preferably the amount of molybdenum carbide is less than that of titanium carbide and in particular 5-35 per cent is used.  Up to 20 per cent iron, 1.5 per cent is used.  Up to 20 per cent iron, 1.5 per cent manganese, 1.5 per cent silicon, 0.5 per cent carbon may be added to the cementing metal.  The blading may be formed by (a) mixing the powdered carbide solution with the cementing metal, forming the preshape and sintering, (b) hot pressing a mixture of powdered carbide solid solution and cementing metal, (c) forming a porous preshape of the powdered carbide solid solution, preferably with the addition of 1-25 per cent of the cementing metal, and adding the remainder of the cementing metal by infiltration. Alternatively the carbide solid solution may be formed from the individual carbides during sintering.
Patent GB-303453-A (GB)
Title: Machine for levelling road surfaces
IPC: E01C19/15
Filed: 1927-06-22
Abstract: 303,453. Horne, B. June 22, 1927. Laying down materials, machines for; surfacelevelling machines. - A vehicular levelling- machine comprises pairs of screeds in V-formation, one pair 20 having the apex disposed forwardly to direct the surplus road material on to the other pair 21 which redistributes the material, the residue passing to the rearwardly directed open apex of the second pair. The screeds are mounted for independent rise and fall in guides 23, and grit from a hopper 11 is deposited in front of the apex of the screed 20 by a fluted roller 18 and plain cylindrical roller 19 driven from the rear wheels 7. The surplus grit passes over a scoop 26 and is returned to the feeding point down an inclined guide 40 by the buckets 39 of a conveyer 38 fitted with driving road wheels 32. The machine is trailed behind a grit wagon 10 from which the hopper 11 is fed during transit and the grit is spread by the machine on a road surface previously treated with cold emulsion, hot compound or the like.
Patent GB-269761-A (GB)
Title: Improvements in the production of artificial horn and goods of artificial horn
IPC: B29C48/08
Filed: 1926-07-03
Abstract: 269,761. Manfred, O. July 3, 1926. Extrusion machines.-Homogeneous plastic masses of artificial horn are obtained by prepressing the mixtures through individual slits by a common pressure and then subjecting the whole to a final pressure. The apparatus comprises an extrusion machine in the orifice of which are inserted a plurality of dies a, b provided with parallel ribs a<1>, Fig. 4, or radial ribs z, Fig. 22, of varying cross-section so that the material is subjected to pressures of varying strength. A core k may be inserted between the dies to prevent premature joining of the material. The usual nozzle e may be replaced by one having an inset member f, Fig. 12, formed with an orifice x narrowing outwardly.
Patent GB-805778-A (GB)
Title: Improvements in or relating to piperazine derivatives
IPC: C07D279/28
Filed: 1957-05-27
Abstract: The invention comprises N-(b -acetoxyethyl)-N1 - [g  - (21 - chloro - 101 - phenothiazine)-propyl]piperazine and the preparation thereof by condensing 2-chloro-10-[g -(N-piperazine)-propyl]-phenothiazine with a b -haloacetate in the presence of an equivalent quantity of an acid acceptor, by acetylating 2-chloro-10-[g -(N1 - b  - hydroxyethyl - N - piperazino) - propyl]-phenothiazine, e.g. with an acetyl halide or acetic anhydride, or by condensing 2-chloro-10-(g -halopropyl)-phenothiazine with N-(b -acetoxyethyl)-piperazine or 2-chlorophenothiazine with N - (b  - acetoxyethyl) - N1 - (g  - halopropyl)-piperazine. Acid addition and quaternary salts of the above phenothiazine may be prepared from inorganic and organic acids such as sulphuric, phosphoric, hydrochloric, hydrobromic, sulphamic, citric and ascorbic acid, and from organic esters of sulphuric, hydrohalic and aromatic sulphonic acids such as methyl and benzyl chloride and bromide, ethyl-, propyl-, butyl-, isobutyl-, and a naphthyl-chloride, phenethyl-, allyl-, methallyl-, and crotyl bromide, dimethyl- and diethyl sulphate, methyl benzenesulphonate, an ethyl toluenesulphonate, and ethylene and propylene chlorohydrin.  2 - Chloro - 10 - (g  - piperazino - propyl) - phenothiazine is prepared by refluxing piperazine, sodium iodide, butanone and 2-chloro-10-(g  - chloropropyl) - phenothiazine.  2 - Chloro - 10 - [g  - (N1 - b  - hydroxyethyl - N - piperazino) - propyl] - phenothiazine is prepared by heating 2-chloro-10-(g -chloropropyl)-phenothiazine and N-(b -hydroxyethyl)-piperazine.