baber/WOPTO huggingface dataset:
Patent GB-937562-A (GB)
Title: Improvements relating to non-return valves
Inventor: GRIFFITHS JOHN EVAN
IPC: F16K15/03
Filed: 1961-09-01
Abstract: 937,562. Valves. TILTMAN LANGLEY Ltd. Aug. 20, 1962 [Sept. 1, 1961], No. 31478/61. Class 135. A non-return valve comprises a pair of flaps D, E each pivoted on a common axis lying in a diametral plane of the duct and each having an area substantially greater than half that of the duct so that in the closed condition the flaps partially overlap, the overlapping areas being arranged to provide a fluid cushioning effect to reduce the impact of the flaps on their seats, In the preferred embodiment, an extension D2, E2 on each flap fits approximately into a recess. such as that shown at D1, on the other flap when the valve is closed. The extensions may be perforated and the recesses omitted. The flaps are fitted to a pin B and the pin to the valve duct A with radial clearance to permit the flaps to seat fully on a radial flange in the duct despite wear or other dimensional changes. They are urged towards closure by a spring G and stops, such as small protuberances, may be provided on their upstream faces. The duct A, which may be elliptical and also be split to facilitate assembly, is flush with or recessed into adjacent duct structure. Bolt flanges A1, A2 or weldable spigots are provided.
Patent GB-1253962-A (GB)
Title: Steam cured calcium silicate building products
IPC: C04B28/20
Filed: 1967-08-04
Abstract: 1,253,962. Calcium silicate composition. DUROX BUILDING UNITS Ltd., and R. H. DENNIS. 4 Nov., 1968 [4 Aug., 1967; 2 July, 1968], Nos. 35951/67 and 31584/68. Heading C3N. [Also in Division Cl] A calcium silicate composition comprising at least 0-05%, based on the dry weight of the composition, of asphalt, bitumen and/or coal tar pitch is cured in steam at above 100 p.s.i.g. The composition can be dense, porous and/or lightweight and can be made from Portland cement, sand, hydrated lime, quicklime, flint, aluminium powder, expanded aggregates such as expanded clay, shale, slate, perlite and vermiculite, foamed slag, diatomaceous earth, chalk, sawdust, wood wool, sintered pulverized fuel ash, clinker, breeze, pumice, foam polystyrene, asbestos, glass fibres, metallic fibres and synthetic or natural organic fibres. The calcium silicate composition can be an asbestos product made by water-laying a mixture of Portland cement and chrysotile asbestos, by autoclaving a mixture comprising lime, powdered silica, water and asbestos in the presence of caustic alkali and then moulding and steam curing, or by autoclaving and steam curing a mixture comprising Portland cement, sodium silicate and asbestos fibres. The asphalt, bitumen and/or coal tar pitch can be introduced into the compositions as a fine powder or an emulsior.
Patent GB-1009995-A (GB)
Title: Improvements in electrical components
IPC: H01C10/36
Filed: 1962-08-17
Abstract: 1,009,995. Cam operated switches. GLOBEUNION Inc. Aug. 17, 1962 [Dec. 13, 1961], No. 31589/62. Heading H2B. [Also in Division H1] A miniature potentiometer combined with a switch comprises a base 22, Fig. 4, of insulating material having a resistance element 30 housed in an annular recess 24, the base also carries a conductive post 18 on which is rotatably mounted a second insulating portion 44 having a recess 51 in which is mounted the contact slider 50, connection to which is made via the post 18. The portion 44 of the housing has a knurled flange 36 forming the operating knob and is also provided with a moulded cam contour 60 to operate the switch, which as shown in Fig. 5 is mounted on the back of the base 22 with its operating member 78 overlying the edge of the base 22. Fig. 6 shows a section through the cam contoured surface of the operating knob portion of the housing with the knob in the appropriate position to open contacts 62 and 80.
Patent GB-778673-A (GB)
Title: Improvements in or relating to echo sounding systems
Inventor: ROUND HENRY JOSEPH
IPC: G01S1/72
Filed: 1954-11-02
Abstract: 778,673. Echo - sounding. MARCONI SOUNDING DEVICE CO., Ltd. Aug. 5, 1955 [Nov. 2, 1954], No. 31619/54. Class 118 (2). An echo-sounder comprises at least one transmitting transducer and at least one receiving transducer adapted to produce or receive (as the case may be) a pressure wave beam the section of which is narrow in one plane and wide in the section plane at right angles thereto, the said transducers being arranged at a substantial angle to one another, so that although an elongated narrow strip of sea bed is illuminated by the transmitting transducer, echoes from only a short length of this are received by the receiving transducer. In Fig. 1 a ship 2 has a transmitting transducer 1 athwartships and a receiving transducer 5 perpendicular to transmitter 1, each having a rectangular vibrating surface many wavelengths long but only a few wavelengths wide. Thus, at a depth of, say, 100 feet a strip of sea bed 6 ft. by 40 ft. may be covered by each transducer, but since these are at right angles an area only 6 ft. by 6 ft is effectively determined. The transmitter 1 is fed by known electronic circuits 4 and the receiver 5 feeds known receiving and recording apparatus 6 and 7. Thus a narrow strip of sea bed parallel to the ships, path is scanned by motion of the ship. The modification of Figs. 2 and 3 enables a wider strip to be scanned without loss of detail across the strip. A plurality of transmitters 1A, 1B . . . 1E are tilted as shown in Fig. 3 so that, in conjunction with receiver 5, each delineates a narrow strip of the sea bed parallel to the ships, path and continuous with its neighbours. The transmitters are energized successively, the interval between transmissions being sufficient to allow reception of each echo before the next transmitted pulse. Reception and recording is as in Fig. 1. Alternatively, a tilted series of receivers may be used with a single transmitter (Figs. 4 and 5, not shown). In this case each receiver has its individual recorder. If required, the records may be cut-out and stood on edge to provide a three-dimensional contour map of the sea bed. A large area of sea bed may be investigated from a stationary ship by combining the tilted transmitter system with the tilted receiver array. Gyroscopic or other stabilizers may be used to counteract rolling and pitching. The transducers may have curved surfaces to give partial focussing of the beams and increased recording depth with good definition.
Patent GB-480039-A (GB)
Title: Improvements in and relating to boots and shoes
IPC: A43B7/14
Filed: 1936-11-19
Abstract: 480,039. Boots and shoes. JOCK SHOES, Ltd. (Buxton, A. G. S.) Nov. 19, 1936, No: 31693. [Class 17 (ii)] A strip 1 of leather or other material is positioned in a shoe to extend from the ball position on the inner side around the toe and along the outside edge of the sole rearwards, and this strip decreases in thickness inwardly from its outer edge to the inner feather edge 4 which borders the position occupied by the joint of the big toe of the wearer, to give balance and support to the foot. The strip 1 may have a peripheral flange which, when the strip is positioned between the inner and outer soles, extends under the inseams.
Patent GB-282037-A (GB)
Title: Improvements in or relating to fuel injection apparatus for internal combustion engines
IPC: F02M53/04
Filed: 1927-11-25
Abstract: 282,037. Sulzer FrÞres Soc. Anon. Dec. 8, 1926, [Convention date]. Void [Published under Sect. 91 of the Act]. Cylinders receiving liquid fuel. -In fuel injection apparatus, in which the fuel is stored under pressure in an accumulator and injected into the cylinder past a spring-loaded valve, provision is made for an additional force, tending to close the valve during the period in which the injection is not to take place. Fuel is compressed by a pump 6 into an accumulator comprising an annular chamber 5, a pipe line 4, and an additional chamber 14 if desired, and injected past a valve 20, closed by a spring 8, and opened by the fluid pressure of the fuel. An additional spring 9 acts on the stem of the valve through a lever 11, pivoted at 10, except during the injection periods when the pressure is relieved by a cam 15 acting through a rocker 13. The spring 9 may be coaxial with the spring 8; alternatively the additional force may be applied by fluid under pressure.
Patent GB-926900-A (GB)
Title: Improvements in or relating to drilling apparatus
IPC: E21B17/18
Filed: 1959-09-17
Abstract: 926,900. Boring earth &c. I. COSTA. Sept. 17, 1959 [Sept. 18, 1958; April 9, 1959], No. 31775/59. Class 85. A drill string has a passage, outside the central bore, for admission of compressed air to the drilling mud rising in the bore, the density of the mud being reduced and its flow facilitated so that pieces of rock &c. are carried more effectively up the bore. Air is supplied from a compressor 1 to the swivel 3 having an annular air passage 4 leading to a space a connected to longitudinal air passages in the kellv 29. The air passages are continued downwardly through the sections of the drill string, each section comprising an inner tube 31 (Fig. 2) integral with a screwed male end 33 having ports 36 which lead, when the outer tube 31a is screwed into the socket 34, to an annular air passage 35. Each passage 35 communicates, through ports 36a, with a space 36b in a coupling member 32a into which the male end 33 of the next section screws. When the sections are assembled an annular air passage is provided throughout the string, the air finally passing down a space 45, past a cup washer 48 which prevents upward flow, and through holes 46a into the mud bore. Mud from the bore passes to settling tanks 17, 17a and the overflow from the tanks is discharged into the well. In a modification, the air passes through small pipes external to the drill string, the screwed connections between the drill pipe sections having air passages leading to sockets which receive the ends of the small pipes.
Patent GB-618360-A (GB)
Title: Improvements in or relating to photographic objectives
IPC: G02B9/12
Filed: 1946-10-25
Abstract: 618,360. Optical objectives. KODAK, Ltd. (Eastman Kodak Co., and Aklin, G. H.). Oct. 25, 1946, No. 31781. [Class 97 (i)] An objective consists of four elements alternately positive and negative with a positive lens at the front and the last two lenses closest together has the refractive indices N, the dispersive indices V, and the focal lengths f, and the radii of curvature R of the lens elements each numbered by subscripts in order from front to rear within the following limits : 1.68 # N1 # 1.95, 1.60 # N2 # 1.90, 0.05 # N1 - N2 # .30, 1.68 # N3 # 1.95, 0.14 # N3 - N4 # 0.35, 0.56V1 # V2 # 0.72V1, 0.75V3 # V4 # 0.95V3, 4.5 # F(1/f1+1/f3) # 4.9, 3.9 # - F(1/f2+ 1/f4) # 4.3, 1.25F # R2##, .28F # R4 # .5F, .28F # - R4 # .50F, .28F # - R6 # .5F, .28F # - R7 # .5F, where F is the focal length of the objective and the + and - values of the radii indicate surfaces respectively convex and concave to the front. A numeral example of the lens shown is given and an example in which the elements III, IV are cemented together. Specification 618,361 is referred to.
Patent GB-875891-A (GB)
Title: Improvements relating to the surfacing of decks and other floors
Inventor: CADOGAN HOWARD BASKERVILLE
IPC: E04F15/12
Filed: 1956-10-19
Abstract: 875,891. Floors. SEMTEX Ltd. Sept. 6, 1957 [Oct. 19, 1956], No. 31818/56. Class 20(4) [Also in Group XXXIII] A floor surfacing comprises an under-layer of a non-metallic cellular material, a metal network supported on this under layer, and a top layer of a non-cellular non-metallic composition, these three constituents being bonded to each other and to the floor base. A preferred surfacing comprises an under-layer of a closed-cell cellular hard rubber or synthetic resin composition, a steel wire or rod mesh supported on this underlayer, and a continuous top layer of a non- cellular composition based on a rubber and/or synthetic-resin binder together with filler material (and if desired pigment), these three constituents being bonded to each other and to the floor base by compositions based on a rubber latex together with a hydraulic cement, with or without fillers. Specifications 834,224, 850,966 865,693 and 886,375, are referred to.
Patent GB-833466-A (GB)
Title: A method of erecting sheet-plate containers having a cylindrical shape and vertical axis
Inventor: MACKU VLADIMIR
IPC: E04H7/06
Filed: 1956-10-19
Abstract: 833,466. Silos. KRALOVOPOLSKA STROJIRNA ZAVOD KLEMENTA GOTTWALDA NARODNI PODNIK. Oct. 19, 1956, No. 31886/56. Class 20(1) [Also in Group XXIX] A method of erecting the cylindrical shell of a vertical storage container from plates assembled in end-to-end arrangement consists in disposing the plates in a continuous helical formation and securing the plates together end-to-end and also to the plates of the last preceding helix, while progressively elevating the erected part of the structure by rotating said part on a helical foundation to form successive spaces for receiving following plates. A lowermost series of plates 1 of progressively increasing height form a cylindrical section, the upper edge of which conforms to a complete helix. A plurality of rollers 2 are fitted to the upper helical edge of the plates 1. An uppermost section of the shell is formed by plates 6, also of progressively increasing height. A protective detachable strip 7 of inverted U-shaped cross-section is attached to the lower edge of the top section by bolts. The two sections are separated to provide a helical gap between their adjacent edges. The upper section is then rotated on the lower section to form a space for receiving a plate 8 of constant height. This plate is secured to the immediately superposed plates of the upper section and the rotating and plate-securing operations are continued until the shell is of the required height. Finally, the upper edge of the bottom section is secured to the immediately superposed plates.
Patent GB-208710-A (GB)
Title: Improvements in or relating to electrolytic cells for refining metals
IPC: C25C3/08
Filed: 1923-12-20
Abstract: 208,710. Aluminum Co. of America, (Assignees of Hoopes, W.). Dec. 21, 1922, [Convention date]. Aluminium, obtaining.-A cell for refining metals by electrolysis comprises a metal shell divided horizontally into two sections 10, 13, insulated from one another, the former section being connected to a source of current and the latter section being k e p t electrically heated. A thermally and electrically insulating layer 41 extends over the joint between the sections and the sides of the section 13 to insulate the molten metal in the upper section therefrom. Water jackets 14, 12<a>, connected in series, are arranged as shown, the flow and return pipes and the connecting pipe between the jackets consisting of rubber hose pipe. The section 10 is provided with a heat-insulating layer 28 of bauxite, alumina, magnesia, or refractory bricks, and a bowl-shaped lining 29 of carbon. The latter is made by tamping into the shell a mixture of tar, pitch and granular or powdered coke, when in a plastic condition, and then baking in an oven at 600‹ C. Conductor plates 33 are bolted to metal pads 32 on the section 13, and metal plates 31 welded to the shell ensure good contact with the mass. The upper electrodes consist of a number of carbon cylinders 34 adjustably secured to conductors 37 carried by a framework 38, by means of metal rods 35 provided with clamps 36. The side lining 41 is formed by melting a. mixture of suitable fluorides in the cell, the water circulating in the jackets causing a crust to form therein. When the cell is to be used for refining aluminium, a mixture containing aluminium, sodium, and barium chlorides, or a mixture of cryolite and fluor-spar in equal proportions, is placed in the cell and fused to form a crust over the joint between the sections. Molten alloy of the kind to be used as the anode is then poured into the cell, the fluorides being lighter rising to the top and forming a layer thereon, with the subsequent formation of a crust on the sides of the upper section 13. Part of the fluoride bath is then dipped out and a layer of pure aluminium is poured on the top of the remaining bath mixture to farm the cathode. Tap-holes are arranged at the top and bottom of the cell for removing the refined aluminium and the impoverished anode alloy. Fresh alloy may be added by inserting a heated carbon funnel into the cell and pouring the alloy through the funnel after the refined metal therein has been removed. A heat-insulating crust 42, Fig. 8, may be formed on the top of the aluminium by dusting a layer of finelydivided alumina, carbon and magnesia thereon, and then adding a layer of solidified bath material. The conductors 33, 37 and the plates 31 will produce magnetic fields causing a useful stirring of the cell contents. In some cases air may be used as the cooling medium in the jackets instead of water.
Patent GB-379919-A (GB)
Title: Improvements relating to starters for internal combustion engines
IPC: F02N15/06
Filed: 1931-11-18
Abstract: 379,919. Turning-gear. MacMILLAN, C. H., 101, Strathcona Drive, Anniesland, Glasgow. Nov. 18, 1931, No. 31953. [Class 7 (v).] A starter comprises a pinion 3 threaded upon a screw-threaded sleeve 7 driven from the shaft 1 of the starting motor through a cone clutch 8 held in engagement by a spring 9. On rotation of the shaft 1 and sleeve 7, the pinion 3 moves axially into mesh with an engine gear 4 and is arrested by a stop 10 on the shaft 1 ; axial pressure between the stop and the threads 5, 7 temporarily relieves the pressure on the clutch 8 until the clutch connection is reestablished by the spring 9. In a modification, the sleeve 7 is replaced by a shaft extending through the tubular shaft of the starting motor, to which it is connected by a cone clutch on the opposite side of the motor. Specification 349,291 is referred to.
Patent GB-1521063-A (GB)
Title: Method and apparatus for manufacturing upholstered foamed articles and upholstered foamed articles manufactured the-rby
IPC: B29C39/00
Filed: 1975-07-31
Abstract: 1521063 Moulding upholstery INTERNATIONAL BF GOODRICH EUROPE BV 31 July 1975 [1 Aug 1974] 32013/75 Heading B5A A cover of upholstery material which is made airtight by its P.V.C. coating, is formed in the female mould member by vacuum drawing. Either fixed plates or as shown in Fig. 4, sliding plates 11, are used to form pleats or folds in the cover in a controlled manner. The formed sheet is then filled with foamable materials covered with plate 16 and caused to foam to form a cushion. The edges of the material are then glued to the underside of the cushion. The pleat or fold may be incorporated before, during or after foaming provided the foam has not hardened. A male mould member may be used to fit into the female mould before the vacuum is created.
Patent GB-1522202-A (GB)
Title: Conveyor apparatus
IPC: B65G47/32
Filed: 1975-07-31
Abstract: 1522202 Endless conveyers VACUUMATIC Ltd 23 July 1976 [31 July 1975] 32096/75 Heading B8A Articles on endless conveyer 13 are delivered in succession on cyclic horizontal reciprocation of the downstream end thereof to an article discharging position, there being gating means 12 located adjacent the upstream end of the conveyer for providing a segmented flow of articles to the conveyer. In the arrangement shown conveyer 13 comprises plural spaced belt 23 mounted around rollers 24 to 27, driven pulley 28 and roller 29. Roller 24 and 26 are carried by rocker 31 which is pivoted to achieve reciprocation of the belts. The articles are delivered to a pushertype conveyer, having paddles 16, which may be associated with an infeed conveyer 14 and are received from a conveyer 11, gate 12 being located between conveyers 11, 13. Gate 12 comprises a series of fingers 20 movable vertically on linkage 21, 22. Further means 35 (see also Fig. 2, not shown) are provided which may be raised above the level of belts 23 to inhibit advance of an article thereon. The inhibit means 35 and gate 12 are controlled by photodetector 38 and by a timing device (39), (Fig. 3, not shown), to ensure the correct deposition of an article between paddles 16 of the pusher conveyer. The timing device comprises a notched metal disc rotatable between an electromagnetic source (42) and detector 43, the notch (41) lying between the source and detector when a paddle 16 is in the transfer region, i.e. unable to accept an article. Operation.-When there is no signal from paddle detector (43) gate 12 is lowered and an article 44a fed to conveyer 13 and after the article has fully passed detector 38 the gate is lowered. If now a paddle 16 is detected the inhibit device 35 is raised to block movement of the article on conveyer 13. When the paddle has passed the inhibit device is lowered allowing article 44a to move on to the pusher conveyer and gate 12 is lowered to allow article 44b to move on to conveyer 13 (see also Figs. 4a to 4b, not reproduced). Specification 1,522,201 is referred to.
Patent GB-738403-A (GB)
Title: Improvements in or relating to methods of securing electrolytic deposited metal skins and matrices manufactured by such methods
IPC: B22C9/06
Filed: 1952-12-18
Abstract: A metal skin is secured to a matrix block by an alloy having a basis of Zn with about 3 per cent Al, about 3 per cent Cu and at the most 1 per cent Mg.
Patent GB-1081897-A (GB)
Title: Difluoraminated piperazine derivative
Inventor: FERGUSON ALAN NORMAN
IPC: C07D241/04
Filed: 1964-08-06
Abstract: The invention comprises the compound 1,4-diformyl - 2,3,5,6 - tetrakis (difluoramino) piperazine and its preparation by reacting 1,4-diformyl - 2,3,5,6 - tetrahydroxypiperazine or an ester thereof with difluoramine in an inert atmosphere in the presence of an acidic condensing agent.  The hydroxy starting material may be prepared from glyoxal and formamide as described in Specification 1,042,905, and the crude condensation product may be used as reactant instead of the purified compound. Acid condensing agents specified are concentrated sulphuric acid, oleum, fluorosulphonic acid, and chlorosulphonic acid.  Preferably the condensing agent is added to a mixture of the reactants under difluoramine reflux at about -23 DEG  C.  The compound may be used as a constituent of high energy propellent compositions.  1,4 - Diformyl - 2,3,5,6 - tetraacetoxypiperazine is prepared by esterfication of 1,4-diformyl-2,3,5,6-tetrahydroxypiperazine.
Patent GB-464092-A (GB)
Title: Improvements in or relating to projectors
IPC: G03B21/20
Filed: 1936-11-24
Abstract: 464,092. Optical projection apparatus. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. Nov. 24, 1936, No. 32175. Convention date, Nov. 27, 1935. [Class 97 (i)] [Also in Groups XI and XL] In a projector lamp comprising one or more super-pressure mercury vapour discharge tubes 1 placed between a condenser lens 3 and a reflector 2, light which does not fall on the lens or reflector is returned to the discharge path by reflectors 4 having a high reflecting power, particularly for ultra-violet light. Cooling liquid such as water may circulate between the tube and the reflectors, and a glass plate 5 prevents over heating of the condenser. The lamp may also be used for street illumination and other purposes.