baber/WOPTO huggingface dataset:
Patent GB-398033-A (GB)
Title: An improved process for the treatment of fibrous plants for the recovery of the fibres thereof
IPC: D01B1/42
Filed: 1932-09-22
Abstract: 398,033. Separation of fibre from plant material. WOOD, B. B., 176, Hereford Street, Christchurch, New Zealand. Sept. 22, 1932, No. 26394. Convention date, Oct. 12, 1931. [Class 96.] Flax, sisal, jute, &c. are impregnated with water by immersion in an enclosure at low pressure and then subjected to heat and pressure such that on sudden release of the pressure which occurs when the material is expelled into a vacuum enclosure containing washing water, the water in the material is converted into steam and separates the fibres from the material. The material may be bruised by rollers &c. before wetting, and is placed on conveyer C which takes it up a water column through a vacuum space and down to the end of an open-topped water trough A. The material is then passed through a door E of a container D where it is subjected to heat andlow pressure, e.g. by hot air supplied through a pipe F and then blown into a container H and conveyed through a vacuum to a trough M, a vacuum space N being of sufficient volume to maintain the columns oi water whilst the material is blown. The treatment in the trough A &c. may be replaced by a soaking bath &c. and the container D may be exhausted of air and vapour prior to the pressure treatment. The usual chemicals may be used in the soaking treatment to soften the material and prevent the fibre from darkening.
Patent GB-338974-A (GB)
Title: Improvements in the construction and mounting of diaphragms for wireless loudspeakers, gramophones and other sound-reproducing apparatus
IPC: H04R7/20
Filed: 1929-08-30
Abstract: 338,974. Kent, A. F. S. Aug. 30, 1929. Diaphragms.-A conical or similar non-flat diaphragm B is affixed to a continuous sheet of material A, e.g. casement cloth, so that the weight of every portion of the diaphragm is supported by the mounting material and not by the substance of the diaphragm itself, the material being of such a character that it does not act as a diaphragm to any substantial extent. The edge of the diaphragm may be serrated or scalloped. According to the first Provisional Specification, the diaphragm may vary in thickness, while according to the second Provisional Specification, the diaphragm may be strengthened by ribs and slots may be cut in the diaphragm and covered with either thick or thin material.
Patent GB-766721-A (GB)
Title: Improvements in or relating to polymers and copolymers of dialkenyl beta-cyanoethane-phosphonates
IPC: C07F9/40
Filed: 1954-09-13
Abstract: The invention comprises as a new product a solid polymer of a di-beta, gamma-alkenyl betacyanoethanephosphonate having the formula (RO)2P(O).CH2.CH2.CN, wherein R is an allyl or a 2-methallyl radical. It also comprises a copolymer of a di-beta, gamma alkenyl betacyanoethane phosphonate of the above formula and a polymerizable compound consisting of methyl methacrylate, diallyl phthalate, unsaturated polyester resins, styrene, and vinyl acetate.  The polymerization may be effected in the presence of organic peroxides and the products may range from viscous gels to tough, hard glass-like solids having excellent flame-resisting characteristics. The copolymerization may be effected by heating the mixture in the presence of a polymerization catalyst such as an organic peroxy compound, e.g. benzoyl peroxide, acetyl peroxide, or tertiary-butyl perbenzoate and may be carried out with mixtures of the monomers in bulk, in a suitable solvent, or in an emulsion polymerization system. Examples are given for the polymerization of diallyl beta-cyanoethane phosphonate and of dimethallyl beta-cyanoethane phosphonate in the presence of benzoyl peroxide.  Examples are also given for the copolymerization of diallyl- and dimethallyl-beta-cyanoethane phosphonates respectively with methyl methacrylate, diallyl phthalate, a partial polymer of an unsaturated polyester, and vinyl acetate respectively in the presence of benzoyl peroxide, and also for the copolymerization of diallyl beta-cyanoethane phosphonate with styrene in the presence of benzoyl peroxide.  The copolymers are solid resinous products having flame resistance.ALSO:Di-beta, gamma alkenyl beta-cyanoethane phosphonates having the formula (RO)2P(O) CH2CH2CN wherein R is allyl or 2-methallyl are obtained by reacting di-allyl- or di-methallyl-phosphite with acrylonitrile in the presence of a sodium alkenolate.  Examples are given for the production of diallyl beta-cyanoethane phosphonate by reacting diallyl phosphite with acrylonitrile in the presence of a catalyst solution of allylate obtained by dissolving sodium in distilled allyl alcohol and toluene; and for the production of dimethallyl beta-cyanoethane phosphonate by reacting dimethallyl phosphite and acrylonitrile in the presence of a solution prepared by dissolving sodium in methallyl alcohol and toluene.  It is stated that a small amount of trinitrobenzene may be used as a polymerization inhibitor in the first-mentioned example without materially affecting the reaction conditions or product yield. The ester products may be polymerized or may be copolymerized with methyl methacrylate, diallyl phthalate, vinyl acetate, an unsaturated polyester resin or styrene (see Group IV (a)).
Patent GB-601750-A (GB)
Title: Improvements in or relating to air cleaners
IPC: F02M35/026
Filed: 1945-10-10
Abstract: 601,750. Air cleaners. HOUDAILLEHERSHEY CORPORATION. Oct. 10, 1945, No. 26508. Convention date, Nov. 4, 1943. [Class 8 (ii)] [Also in Group II] A liquid bath air cleaner comprises a casing having spaced inlet and outlet openings 11, 7, a liquid sump 19 and a rotatable air filter surrounded by an open-ended wall 32, 34 having perforations 33 at the sump end through which liquid taken from the sump is thrown by centrifugal force (see Group II). The casing comprises a lower oil sump forming section 18 clamped to an upper section comprising concentric walls 1, 9 forming an annular air inlet passage 11, and turned inwardly at 17, 16 to guide the air to the centre of the cleaner. Hardware cloth screens 37, 39 retain the filter medium of wavy wire, vegetable fibre or curled cattle hair within the perforate and imperforate walls 32, 34. The wall 34 is frustro-conical in shape and of greater diameter than the perforated wall 32, and lies adjacent the casing wall 1 so as to substantially prevent byepassing of the filter by the incoming air. Vanes 41 react to the incoming air to rotate the filter about a fixed post 30.
Patent GB-651404-A (GB)
Title: Improvements in the construction of apparatus for heating gases in contact installations for the catalytic production of various products
IPC: B01J8/02
Filed: 1947-10-01
Abstract: <PICT:0651404/III/1> Apparatus for use in gaseous catalytic reactions comprises a main chamber containing the catalyst 6, a secondary chamber 2 formed as an extension of or projection from the main chamber and which contains electric heating elements and which communicates with the main chamber through one or more parts 8, and a layer of heat insulating material forming the major part of main chamber wall and extending over the secondary chamber wall.  In operation, gases enter through an inlet 7, pass over the heater 5 and pass through port 8 into the catalyst 6.  In the modification shown in Fig. 3, the temperature is regulated by a thermocouple 14 connected to the catalyst and the electric supply and which cuts off the supply by means of a relay 15.  This relay may actuate a servo-motor to control a damper or butterfly valve through which the cold gases first pass.
Patent GB-821651-A (GB)
Title: Improvements in or relating to electrical apparatus
Inventor: DAVISON DONALD WILLIAM
IPC: H01R43/00
Filed: 1956-08-31
Abstract: 821,651. Ceramic-metal seals; two-part couplings. PLESSEY CO. Ltd. Aug. 21, 1957 [Aug. 31, 1956], No. 26632/56. Addition to 800,992. Drawings to Specification. Classes 36 and 38 (1). Joints in electrical apparatus between members of alumina and molybdenum conducting members are made by means of an intermediate layer of molybdenum disilicide bonded to the alumina as described in the parent Specification. An electrical connector may comprise an insulating body of alumina having molybdenum pins or socket-tubes sealed therein by a molybdenum disilicide layer, the insulating body being likewise sealed into a metallic housing. The housing containing the contactpins may be provided with a loosely-fitted internally-threaded ferrule to engage a corresponding externally-threaded portion on the housing containing the contact tubes. Specification 779,128, [Group II], also is referred to.
Patent GB-407947-A (GB)
Title: Improvements in or relating to telephone or like systems
IPC: H04Q3/00
Filed: 1932-09-26
Abstract: 407,947. Automatic exchange systems. SIEMENS & HALSKE AKT.-GES., Siemensstadt, Berlin. Sept. 26, 1932, No. 26715. Convention date, Sept. 26, 1931. [Class 40 (iv).] Switches are marked idle by the connection to a talking wire of a voltage sufficient to break down a neon tube Gl, Gl<1> in series with the test relay in the preceding switch, the usual third wire being eliminated. Release of switches after the first is initiated by the application of A.C. to the other talking wire to break down neon tubes Gd<2>, Gl<3> in series with relays B1, B2 which release the switches concerned. First selector. When the line switch switches through, C pulls up over the c-wire and A over the loop, A energizes V and locks C and repeats the first digit to the vertical magnet H. P pulls up at the first impulse, holds until the end of the digit owing to a short circuit on its winding (i) and then makes a rotary driving circuit. When an idle line is reached, the neon lamp Gl breaks down owing to the high voltage of the battery B1 and P is re-energized over its winding (i) stops the switch, extends the talking circuit and locks up. Second and final selectors. Clover which P in the preceding selector was energized at once cuts itself off the line to mark the selector busy, locks over a further winding and energizes the impulse relay A1 over the impulse contact 7a in the first selector. The switch then responds to impulses and begins to hunt in known manner. When an idle final selector is reached, Gl1 breaks down and P1 switches through. C2 in the final selector cuts itself off the line to busy the switch which is then operated in known manner. Release and metering. When the calling party hangs up, A, C fall back but V is held by ground on the a-wire and Z is energized by battery on the b-wire over sequence switch contacts 10 in the final selector. Z puts full ground on the c-wire to meter the call and shunts out V which disconnects P and connects an A.C. source WQ to the b-wire to break down the lamps GL2, Gl3 and so energize the relays B1, B2. On the relapse of P the source is disconnected and the release magnet M is energized. B1 unlocks C1 which unlocks P1 to release the second selector. B2 unlocks C2 and the final selector is released when the called party has hung up. Modified testing arrangement, Fig. 2. C1 instead of cutting itself off remains connected up until the vertical springs 54k, 55k change over, the switch being marked busy by connecting a shunt DR between the talking wires.
Patent GB-1476825-A (GB)
Title: Tooling for sheet metal forming apparatus
IPC: B29C65/02
Filed: 1975-06-24
Abstract: 1476825 Bending dies VULCAN RADIATOR CO 24 June 1975 26723/75 Heading B3E A female die for forming a sheet metal panel having a surface which must not be spoiled, has a part-circular recess either side of a cavity, each recess housing a rotatable elongate circularsection member. In the cross-section of Fig. 2, rods 18, 20 of polytetrafluoroethylene, tetrafluoroethylene, or trifluorochloroethylene, are retained in part cylindrical cavities 24, 26 by retaining strips 28, 30 mounted on the die body 14 by screws 22. The panel is laid on the die with that surface which is not be be spoiled, e.g. a vinyl clad, polished, or painted surface, contacting only the upper surfaces of the rods.
Patent GB-769339-A (GB)
Title: Rollers for supporting movable bodies
Inventor: MEATS WILLIAM HENRY
IPC: B62B5/00
Filed: 1954-09-15
Abstract: 769,339. Truck rollers. TELEHOIST, Ltd. Sept. 5, 1955 [Sept. 15, 1954], No. 26728/54. Class 144 (1). A truck or like roller 3 comprises an elongated tube, forming the main roller, with a longitudinal slot in its wall to receive a U-shaped insert 7 carrying a row of small rollers 9 mounted for rotation about axes at right angles to that of the main roller 3 so that the truck or supported body can be moved in a direction transversely to that provided for by the main roller. As shown, the main roller tube 3 is mounted by means of bearings 4 at each end on axles 5 on a support frame 6. The insert 7 has bent-over edges welded to the sides of the slot and its base is either riveted or welded to the tube wall. The small rollers 9 are dimensioned and positioned to project from the insert to complete the circular sectional contour of the main roller 3, the periphery of the small rollers being correspondingly convex as shown in Fig. 2.
Patent GB-241398-A (GB)
Title: Improvements in or relating to internal combustion engines
IPC: F02B19/04
Filed: 1924-11-11
Abstract: 241,398. Romeyn, J. Nov. 11, 1924. Cylinders receiving liquid fuel. - In an engine having a projection f on the cylinder head which enters a recess g in the piston head at the end of the instroke, the projection is provided with holes i through which the air compressed in the annular space h may enter the recess g. Alternatively the projection may be formed on the piston and enter a recess in the cylinder head. Reference has been directed by the Comptroller to Specification 214,637, (as open to inspection under Sect. 91 of the Act).
Patent GB-791143-A (GB)
Title: Improvements in supports for neckties and like articles
IPC: A47G25/74
Filed: 1955-09-21
Abstract: 791,143. Clamp fastenings. KNIGHT, H. Sept. 21, 1955 [Jan. 20, 1955], No. 27008/55. Class 44 [Also in Group XIV] A tie support comprises an open frame having spaced top and bottom rails 3, 4, and a resilient strip 18 secured along its top edge to the top rail and having its lower edge close to the bottom rail to grip a tie 10. Side members 5, 6 of the frame and flanged and apertured for mounting in a cupboard &c. or the frame may be suspended by a hook. The resilient strip 18 is of rubber and is provided with a fabric cover. In a modification the frame is moulded in two parts of a synthetic resin, the parts being secured together by adhesive and forming a groove receiving the upper edge of the resilient strip.
Patent GB-815046-A (GB)
Title: A method and instrument for obtaining small biopsy specimens of the mucosa of the rectum and lower colon
Inventor: TRUELOVE SIDNEY CHARLES
IPC: A61B10/00
Filed: 1957-08-27
Abstract: 815,046. Surgical instruments. VANN BROS. Ltd. Feb. 4,1958 [Aug. 27,1957], No. 27017/57. Class 81 (2). An appliance for taking biopsy specimens from the interior of the colon comprises a hollow head 15 with a small hole 1 in one side through which the mucosa can protrude, whereupon it is cut off by a guillotine knife 2, which is slid upwards by a rod 6 passing through a tubular handle. The upper end of the head is closed by a resilient plug 8 and, in order that the mucosa may be drawn inwards for cutting, the head is partially evacuated by a syringe connected through a pipe 4 to the interior of the tube. In order to ensure effective cutting the knife 2 is held against the side of the head member by a spring- loaded ball 18.
Patent GB-853154-A (GB)
Title: Improvements in roller mills for grinding cereal products
Inventor: SUGDEN GEORGE HIGHLEY
IPC: B02C11/00
Filed: 1958-08-22
Abstract: 853,154. Roller mills. SIMON Ltd., H. Aug. 11,.1959 [Aug. 22, 1958], No. 27027/58. Class 59 A roller mill comprises a scraper g.for removing ground material adhering to a grinding roller and a diverter h which is so arranged that the ground material removed by the scraper is diverted towards the nip of the grinding rollers while the current of air resulting from the removal by the scraper of the moving layer of air entrained by the roller surface is diverted away from the nip of the grinding rollers. The diverter is carried in cheeks k, Fig. 3, at the ends of the scraper, each cheek having a pivot pin extension m which extends through a side wall n of the mill where it has secured thereon a slotted quadrant o which, and thus the scraper and diverter, is secured in the desired angular position by means of a screw p and wing nut g. A scraper and diverter may be provided for one, or each, roller of a pair of grinding rollers. The scraper may be in the form of a brush. Specification 811,371 is referred to.
Patent GB-986724-A (GB)
Title: An electronic network for the conversion of a d.c. voltage into a sequence of impulses
IPC: H03K17/18
Filed: 1963-07-09
Abstract: 986,724. Pulse modulation circuits; transistor sawtooth generators. SIEMENS & HALSKE A.G. July 9, 1963 [July 10, 1962], No. 27037/63. Headings H3T and H4L. A circuit for converting a direct voltage into a pulse train of frequency dependent on the voltage and comprising a condenser charged through a transistor and discharged each time it reaches a predetermined potential, is characterized in that a further transistor is connected in parallel with the condenser so that temperature changes do not affect the charging rate of the condenser. In the Figure the voltage U m  controls the current through transistor T 1  and so controls the charging rate of condenser C i . Each time condenser C i  reaches a predetermined potential a comparison device AV closes contacts K 1  and K 2  to discharge the condenser and provide a pulse at output terminal A 2 . Thus the pulse frequency is proportional to U m . A transistor T 2  is connected in parallel with C i  so that temperature variations affect the two transistors equally and do not alter the condenser charging current. Biasing sources B 1  and B 2  for the transistor are arranged so that there is no charging current when U m  is zero. A resistance R k  in series with C i  compensates for a linearity error which would otherwise be caused by the constant dead time when the condenser is being discharged.
Patent GB-1387552-A (GB)
Title: Process for removing heavy metal ions
IPC: C04B7/00
Filed: 1973-06-06
Abstract: 1387552 Removal of heavy metal ions from water Y KAJIYAMA 6 June 1973 [7 June 1972] 27079/73 Heading C1C A process for the removal of heavy metal ions contained in water consists in treating with a material mainly composed of porous calcium material which is contacted with the water containing the ions. The process may be used with industrial waste water, sewage, sludge deposits (hedoro) and soil. The coral fossil lime stone may be treated with slaked lime to prevent flotation. Regeneration of the treating material at 200-400‹ C. is effective. Ions removed are Cu, Cd, Hg, Pb, Zn, Fe and so on. The treating material may be disposed of by drying to remove water, and using as a basement material below concrete pavement or, after grinding, by mixing with raw concrete, mortar or cement.
Patent GB-272754-A (GB)
Title: Improvements in three colour photography
IPC: G03C7/46
Filed: 1926-10-30
Abstract: 272,754. Didier, L. J. B. Oct. 30, 1926. Colour photography.-A process for producing tricolour photographs of the kind wherein two plates are superimposed, one carrying one of the colour-record images and the other carrying two, and wherein the images on the second plate are produced in succession by sensitizing with bichromate, printing, developing and dyeing, is characterized in that dyes having different penetrability are used for colouring the two images on the second plate. The single image on the first plate may be produced by any process, such as the pinatype process. The second plate is coated with bichromated gelatin and, after printing under the second colour-record negative, is coloured by immersion in a dye-bath, containing for example, carmoisin red F. having a feeble penetrating action. After washing, the plate is resensitized in a bichromate bath, exposed again under the third colour-record negative and washed, and the image is coloured in a dye-bath containing, for example, mikado golden yellow, having a. stronger penetrating action.
Patent GB-822891-A (GB)
Title: Crystallisation of common salt
Inventor: BARBER EDWARD ALAN
IPC: C01D3/26
Filed: 1954-09-21
Abstract: Common salt of low bulk density is obtained as relatively large crystals by adding to brine freed from calcium and magnesium salts, an amide or diamide of molecular weight not less than 250, and evaporating the brine in the absence of air at a temperature of 125 DEG  to 225 DEG  F., preferably about 210 DEG  F.  The amine or the carboxylic acid or both may contain 10-20 C atoms, for example N : N1-di-stearyl sebacamide, octa methylene diamine di-stearamide, hexylstearamides or N : N1-di-methylol sebacamide.
Patent GB-966088-A (GB)
Title: Improvements in or relating to welding
Inventor: COTTERILL GRANVILLE
IPC: B23K5/00
Filed: 1960-08-06
Abstract: 966,088. Welding by fusion. SIDNEY SMITH & SONS (NOTTINGHAM) Ltd. Aug. 3, 1961 [Aug. 6, 1960], No. 27352/60. Heading B3R. A work-holder has an outlet passageway for communication with an outlet passageway in the work and suction means for providing a current of air through the passageways to exhaust. A valve body 16 having a through passageway 21 surrounded by a valve seating which is to be hard-surfaced by flame welding is secured in a clamp 7 with the passageway 21 communicating with a passageway in the clamp 7 connected to an outlet tube 15. Air passed through an outer concentric tube 13 sets up suction in the tube 15 so that a current of air from the valve body 16 passes through the tube 15. This air current serves to cool the work and the torch and to extract the flame. The clamp 7 has holes 30 in any of which a pivot pin 29 on a support 2 rotatable by a motor 24 may be journalled. In a modification, the support 2 is threaded into a base and the functions of the tubes 15 and 13 are reversed.
Patent GB-444263-A (GB)
Title: Improvements in or relating to thermionic valves
IPC: H01J7/18
Filed: 1934-09-24
Abstract: 444,263. Thermionic valves. M-O VALVE CO., Ltd., Electra House, Victoria Embankment, London, and BENJAMIN, M., c/o General Electric Co., Ltd., Wembley, Middlesex. Sept. 24, 1934, No. 27386. [Class 39 (i)] In a screen grid valve such as a high frequency amplifier or frequency changer, sodium is used for gettering in place of barium or magnesium. The sodium may be introduced by the method set out in Specification 436,527 which describes an aluminite process; a similar process wherein silicon or zirconium is used instead of aluminium may be used.
Patent GB-378687-A (GB)
Title: Circular saws with inserted teeth of hard metal
IPC: B23D61/04
Filed: 1931-10-02
Abstract: 378,687. Inserted-tooth saws. LAN. GENBACH, H., , (trading as FRANKFURTER PR€ZISIONS. WERKZEUGEFABRIK GœNTHER & KLEINMOND), Frankfort-on-Main, Germany. Oct. 2, 1931, No. 27428. Convention date, Oct. 27, 1930. [Class 145 (ii).] Inset teeth e of hard metal are soldered in flush with the blade over their whole common surface, and the blade is then ground away in the neighbourhood of the teeth as shown.
Patent GB-1355745-A (GB)
Title: Chemical compositions
IPC: A23L29/00
Filed: 1972-06-13
Abstract: 1355745 Fluoride-containing sugar compositions H LUOMA 13 June 1972 [1 July 1971] 27464/72 Heading A2B  Nutritional compositions having a low tendancy to induce dental caries comprise saccharose, up to 0.022 wt% of sodium fluoride based on the saccharose, and a buffer, preferred being a mixture of sodium bicarbonate and potassium dihydrogen orthophosphate.