baber/WOPTO huggingface dataset:
Patent GB-1201559-A (GB)
Title: Preparation of a synthetic polymer latex having improved stability
IPC: C08F279/02
Filed: 1968-06-19
Abstract: 1,201,559. Seed polymerization. JAPAN GAS-CHEMICAL CO. Inc. 19 June, 1968 [19 June, 1967], No. 29280/68. Heading C3P. A seed latex of at least one monomer not containing a carboxyl group is contacted with 1-20%, by weight of total polymer finally formed, of at least one ethylenically unsaturated carboxylic acid and 0À1 to 50 times by weight based on the acid of at least one ethylenically unsaturated monomer not containing a carboxyl group and a free radical initiator. Suitable systems are butadiene-methyl methacrylatemethacrylic acid or acrylic acid on butadienemethyl methacrylate copolymer; butyl acrylate. acrylonitrile-itaconic acid and butyl acrylatebutyl methacrylate-acrylic acid on butyl acrylate-butyl methacrylate copolymer; styrenebutadiene -methacrylic acid on styrene-butadiene copolymer; isoprene-acrylonitrile-methacrylic acid on isoprene-acrylonitrile copolymer; butadiene - methyl methacrylate - N,N - diethylaminoethyl methacrylate - maleic acidfumaric acid and methyl and butyl methacrylate - methacrylic acid on butadiene - methyl methacrylate copolymer; vinyl acetate-vinyl chloride-methyl acrylate-crotonic acid on vinyl acetate - vinyl chloride - vinylidene chloride copolymer; vinyl chloride-methyl methacrylatemethacrylic acid on vinyl chloride-vinylidene chloride copolymer; vinyl acetate - butyl acrylate - methacrylic acid on ethylene - vinyl acetate copolymer; chloroprene - methyl methacrylate - methacrylic acid on chloroprene-methyl methacrylate copolymer; methyl methacrylate - # - hydroxyethyl methacrylatebutadiene - acrylic acid on butadiene - methyl methacrylate - # - hydroxyethyl methacrylate copolymer; vinyl acetate-butyl acrylate-methacrylic acid on vinyl acetate-butyl acrylate copolymer. Conventional emulsifiers and initiators are used.
Patent GB-603827-A (GB)
Title: Improvements relating to the manufacture of artificial fibres from highly polymeric substances
IPC: D01F6/62
Filed: 1945-11-05
Abstract: An improvement in or modification of the invention claimed in the parent Specification comprises the melt-spinning of the highly polymerized polymethylene terephthalate into a filament, which is then cold-drawn to form a strong, flexible fibre showing the X-ray pattern characteristic of molecular orientation along the fibre axis. The filaments may be extruded or drawn directly from the melt after the completion of the heating during which the polyester is formed, or blocks or chips of the solidified polyester may be re-melted and formed into filaments.  The cold drawing may be carried out on previously formed and cooled filaments, or it may follow directly upon the filament formation as a continuous process.  Any known apparatus may be used for either filament formation or cold drawing. The latter process includes warming in hot water or steam in order to facilitate stretching before or during the cold drawing operation. The preferred polyester are those with 2-10 polymethylene groups the glycols with 2-4 methylene groups give very high melting polymers, and of these ethylene glycol is preferred because of its cost and availability.  In an example highly polymerized ethylene terephthalate is heated in the absence of oxygen to 280 DEG  C. and extruded through a single-hole spinneret.  The filament formed was cold drawn at a draw ratio of 4.7/1 to give a strong flexible fibre of diameter 0.075 mm.  This fibre at 16 DEG  C. and 65 per cent relative humidity possesses a tensile strength of 40.75 kg/mm2, the extension at break being 10 per cent. Specification 527,532 is referred to.
Patent GB-993415-A (GB)
Title: Improvements relating to the manufacture of aliphatic dicarboxylic acid anhydrides
IPC: B01J27/199
Filed: 1961-08-14
Abstract: A process for the vapour phase catalytic oxidation of olefins to aliphatic dicarboxylic acid anhydrides comprises passing a gaseous mixture comprising oxygen and an olefin at a temperature between 250 DEG  and 700 DEG  C. over a catalyst which comprises a complex of oxides of molybdenum, vanadium and phosphorus, in which the molybdenum, vanadium and phosphorus are present in the atomic ratios MO : V : P : : 8 to 11 : 2 to 4 : 0.8 to 1.1, coated on a silica gel carrier which has been prepared by the hydrolysis of a tetra-alkyl orthosilicate, e.g. tetraethyl orthosilicate.  Useful olefins are those containing from 4 to 6 carbon atoms, e.g. but-1-ene, but-2-ene and 3-methylbut-1-ene; olefinically unsaturated refinery by-products obtained in the production of gasoline may also be used.  The oxygen used may be pure or in admixture with an inert gas, such as nitrogen or helium; dry air is preferably employed. The process may be carried out in multiple tube heat exchanger-type reactors.  The anhydrides produced may be recovered by direct condensation or by quenching with water to form the corresponding dicarboxylic acid which is then dehydrated to produce the anhydride.  In the examples, but-2-ene is oxidized to maleic anhydride which is recovered by absorption in water and subsequent dehydration of the acid solution produced.ALSO:An oxidation catalyst comprises a complex of oxides of molybdenum, vanadium and phosphorus, in which the molybdenum, vanadium and phosphorus are present in the atomic ratios Mo:V:P::8 to 11:2 to 4:0,8 to 1,1, coated on a silica gel carrier which has been prepared by the hydrolysis of a tetra-alkyl orthosilicate, e.g. tetraethyl orthosilicate.  The catalyst may be prepared by adding suitably obtained silica gel to an aqueous solution of ammonium heptamolybdate, ammonium metavanadate and orthophosphoric acid, present in appropriate proportions, heating the mixture to dryness over a steam bath and, if desired, pressing into pellets.  The catalyst may be used in fixed or fluid bed systems and is employed for oxidizing olefins to acid anhydrides (see Division C2).
Patent GB-459463-A (GB)
Title: Improvements in or relating to regulating mechanism for the binding prongs of straw presses
IPC: A01F15/12
Filed: 1935-10-24
Abstract: 459,463. Straw presses. CLAAS, A., Harsewinkel, Westphalia, Germany, Oct. 24, 1935, No. 29354. Convention date, May 28. [Class 6 (iii)] To withdraw the binding prong of a straw presser should it accidentally remain in the pressing channel, an auxiliary withdrawing device, actuated by the movements of the compressing arms, is brought into operation. As shown the binding prong c is carried by a shaft d rocked by a connecting rod f pivoted to a crank g on a shaft h driven through a clutch device l from a pinion k meshing with a pinion i on a constantly running shaft. Rigidly secured to the shaft b is a toothed coupling member o, adapted, after a period of idle travel, to engage with another member p loose on the shaft and carrying a pivoted crank-pin to which is adjustably secured a rod n connected to a crank m on the shaft d. In normal working of the press, the members o, p rock without engagement, but should the clutch device l fail so that the prong c is left in the pressing channel, the member o engages the member p, thus rocking the shaft d to bring the prong clear.
Patent GB-865293-A (GB)
Title: Process for recovering resin formers and resins from the evaporator residue of the refining pressure-hydrogenation of benzene hydrocarbons
Inventor: SONNTAG FRANZ
IPC: C07C7/00
Filed: 1959-08-27
Abstract: Valuable resin precursors, e.g. cyclopentadiene, styrene or indene, are recovered from the evaporator residue in the hydrofining of crude benzene, following initial polymerisation at 160-220 DEG C. under pressure, by distilling the residue at normal pressure to recover fractions boiling below 80 DEG C. and from 139-195 DEG C. Cyclopentadiene is recovered from the fraction boiling below 80 DEG C. by dimerising and separating the dimer by distillation.  Styrene is recovered by azeotropic distillation of the 139-147 DEG C. fraction, while the fraction from 147-195 DEG C. may be treated with sulphuric acid to obtain coumarone or indene resins or distilled to separate indene.  The initial polymerisation is preferably limited.
Patent GB-427417-A (GB)
Title: A new or improved device or attachment for use primarily in the cleansing of dip sticks
IPC: G01F23/04
Filed: 1933-10-24
Abstract: 427,417. Pads. BOYD, H., 8, Parr Street, Liverpool. Oct. 24, 1933, No. 29378. [Class 19] A dip-stick wiper applicable for dip-sticks used in connection with oil or liquid fuel tanks of motor vehicles, comprises an L-shaped sheet metal member 1 with an aperture 2 for attachment e.g. to the engine block. The part 4 is bent at 5, 6 to provide channels for the reception of felt or other absorbent 7. The edges of the felt piece are cut away at 8, and an opening 9 is formed in the part 4 to direct the dip-stick between the wiping edges of the felt. According to the Provisional Specification, the felt is clamped between the bracket and a separate U-shaped metal plate secured by screw bolts to the bracket.
Patent GB-1319974-A (GB)
Title: Guillotine and stationery sets for use therewith
IPC: B26D1/06
Filed: 1970-06-17
Abstract: 1319974 Guillotine machines A E COCQUEBERT 17 June 1970 [20 June 1969] 29493/70 Heading B4B A guillotine for use in cutting stationary has means for preventing the guillotine operating over the whole length of its blade. In the guillotine described, comprising a fixed blade 6 and a co-operating vertically reciprocable blade 3 having an inclined edge 4, a stop 10, provided on the base of the guillotine 1, or on the beam 7 carrying the blade 3 limits movement of the blade 3 downwardly. The beam 7 is moved downwardly by manual or mechanical means and returned by springs 9. Guides 11, 10 are provided for locating the material to be cut.
Patent GB-617490-A (GB)
Title: Improvements relating to fluid pressure brake equipment
IPC: B60T15/04
Filed: 1946-10-03
Abstract: 617,490. Fluid-pressure-operated brakes. WESTINGHOUSE BRAKE & SIGNAL CO., Ltd. Oct. 3, 1946, No. 29516. Convention date, Nov. 6, 1945. [Class 103 (i)] The normal connection of the control chamber of the feed valve of an automatic compressed air brake system to the brake pipe can be cut-off and this chamber be connected to atmosphere by a manual valve and when the driver's valve is in the release position and it is desired to obtain unrestricted charging of the system. The feed valve shown comprises a control chamber 45 which in the running position shown of the driver's valve 2 is connected to the brake pipe 1 by passages 46, 47, 18, 19, 39. If the brake pipe pressure falls below that determined by the spring 44, a valve 50 is unseated by the diaphragm 43 to connect the chamber 26 of piston 25 to chamber 35 and thus to the brake pipe by passage 34, chamber 33, passage 36, cavity 37 in the driver's rotary valve 11 and passages 19, 39. The pressure in upper piston chamber 28 which is connected to the main reservoir 22 by passage 23 normally equalizes into chamber 26 through a restricted passage 29 in the piston, but when chamber 26 is vented to the brake pipe, the piston is moved downwards by spring 42 to unseat a valve 32, thus connecting chamber 28 and the reservoir to chamber 33 and thence to the brake pipe as described above. When the driver's valve is turned to application position, the control chamber 45 is cut-off from the brake pipe but remains connected to the chamber 8 of the driver's valve through passage 46 and valve 11 and as passage 36 is constantly connected to chamber 8, feed valve pressure is maintained in this chamber. A manually operated plug cock 15 is mounted in the base of the driver's valve. When the driver's valve 11 is turned to the release position, shown in Fig. 3, but with the cock 15 in the position shown in Fig. 1, the passage 46 from the control chamber 45 is connected by passage 58 in valve 11, passage 17, passage 16 in cock 15, passages 18, 19 to the brake pipe 1 so that the feed valve is operated to charge the brake pipe to feed valve pressure as in the running position through chamber 28, valve 32 and passages 36, and 19, which are however connected by a passage 57 in the valve 11 of larger capacity than the passage 37, Fig. 1. If, however, the cock 15 is turned to the position shown in Fig. 3, the passage 46 from the contract chamber 45 is connected to an atmosphere port 20 and the brake pipe passage 18, 19 is cut-off from passage 17 and thus from the control chamber. The valve 50 is thus maintained open by the spring 44 and also the valve 32 as long as the cock 15 is in the position shown in Fig. 3, provided that full main reservoir pressure has not been reached in the brake pipes. Specification 563,615 is referred to.
Patent GB-629459-A (GB)
Title: Assorting rack
IPC: A47B63/02
Filed: 1947-11-05
Abstract: 629,459. Racks. WADDELL, W. H: M. Nov. 5, 1947, No. 29535. [Class 52 (iii)] [Also in Group XV] A paper &c. sorting rack consists of shelves 15 fitting on a stand 10 which is a hollow boxlike structure having a rear wall, side walls 12, 13, a horizontal top wall 14 and a vertical front wall 20. Steps are formed in each of the side walls 12, 13, the treads thereof meeting the risers 18 at an acute angle, and each tread 16 sloping downward to meet a riser 18. Each riser slopes forward as it ascends to meet the next tread. Each shelf 15 has a floor and a back wall 21 meeting the floor at an acute angle similar to the angle between a tread and riser, the back wall 21, which may be separate and secured to the floor of the shelf or integral therewith, extending along the entire length of the shelf. The shelves are supported at each end by the steps formed in the sidewalls 12, 13 and the upper edge of each back wall 21 abuts the floor of the shelf above, the upper edge of the back wall of the highest shelf abutting the underside of the top wall 14. In using the rack a stack of papers, samples of cloth or sheets placed on a shelf is caused to take on a tier formation owing to the slope of the back wall, each sheet being slightly more forward than the sheet beneath, facilitating the removal of a single sheet.
Patent GB-729585-A (GB)
Title: Improvements in or relating to sewing machines
IPC: D05B27/10
Filed: 1952-11-22
Abstract: 729,585. Sewing-machines. ALMOND, D. Nov. 23, 1953 [Nov. 22, 1952], No. 29564/52. Class 112. The arm A carrying a presserwheel B (shown in rear view) is bent and formed with a flat surface, in a vertical plane parallel to the axis of the wheel, fitting into a recess in the front of a member C carried by the presserbar D. In the form shown the arm A is fixed in the recess of the member C by a screw passing through a slot in the arm to permit lateral adjustment. The member C is free on the presserbar, resting on a spring E thereon, and is formed with a slot c<SP>1</SP> having a vertical portion to receive a locating screw d. A collar F on the presser-bar limits upward movement of the member C, and has a nose f<SP>1</SP> engaging a recess in the latter member.
Patent GB-828658-A (GB)
Title: Production of ethyl acrylate
Inventor: DOBSON KENNETH ROWLAND
IPC: C07C69/54
Filed: 1957-09-20
Abstract: Ethyl acrylate is prepared by heating ethyl 3-ethoxypropionate, ethyl alcohol and water in the presence of a dehydration catalyst, and removing the ethyl acrylate as azeotropes with ethyl alcohol and with water.  The process may be effected by passing a mixture of the reactants into a reactor maintained at elevated temperature containing a further quantity of the same mixture together with the dehydration catalyst.  An inert atmosphere may be used. Specified catalysts are sulphuric, phosphoric and p-toluene sulphonic acids, or an acid ester of a strong inorganic or organic acid.  A suitable temperature is 100-200 DEG  C.  The ethyl acrylate may be separated from the azeotropes by passing them into a column containing a benzene head zone, so as to release the ethyl acrylate and form a benzene/water/ethyl alcohol ternary azeotrope.
Patent GB-1007613-A (GB)
Title: Piezoresistive elements
IPC: G01L9/06
Filed: 1962-08-02
Abstract: 1,007,613. Electric load cells. WESTERN ELECTRIC CO. Inc. Aug. 2,1962 [Aug. 21,1961], No. 29682/62. Heading G1N. [ Also in Division H1] A load all comprises a body of n-type semiconductor piezo-resistive material having a composition of between 13 and 19 atomic per cent of silicon and the remainder germanium. The preferred proportions are 16. 6% silicon and 83.4% germanium and a body 13 of such composition may be provided with electrodes 14,15 and used to indicate the stress exerted on a specimen 10 by loading members 11,12. The cell is connected in series with a current measuring instrument 18 to give an indication of the loading.
Patent GB-441571-A (GB)
Title: Improvements in or relating to the manufacture of paints, varnishes, printing inks and the like
IPC: C09D11/06
Filed: 1934-10-18
Abstract: A vehicle for paints, varnishes, lithographic inks, &c., is made by incorporating in a dispersion of collagen, prepared in accordance with the parent Specification in a vegetable drying oil, not more than 1 per cent of graphite, which is then reduced to colloidal dimensions by milling.  Specified oils are linseed, tung and perilla oil.  Pigments or powdered metals, such as aluminium or bronze, may be added.
Patent GB-285998-A (GB)
Title: Improvements in or relating to tracks for ski-ing, tobogganning and like purposes
IPC: C09K3/24
Filed: 1926-11-26
Abstract: 285,998. Ayscough, L. C. Nov. 26, 1926. Skiing tracks.-Tracks and surfaces for skiing, tobogganing, and the like, are formed of a loose mass of crystalline material to resemble snow. The material may be crushed washing soda or similar crystals mixed with a filling material such as sawdust or wood pulp in the proportion of 65 per cent crystal, 28¢ per cent fillers, and the remainder water. In order to increase the resemblance to snow, powdered mica or similar material may be sprinkled on to the surface which may be sprayed from time to time with a solution of soda and soap to which is added green colouring matter. A foundation of fibre or matting is used, having a pile into which is first rubbed a finely powdered dry soda or crystal; the sawdust or pulp is then sprayed with a saponaceous spray and the crystal particles, graded if necessary, are mixed with it. and the, whole is spread over the foundation. The filling material is first bleached if not white. The temperature is kept comparatively low in order that the crystals, may not powder and when not in use the surface is covered with damp cloths. The surface may be first moistened with a coloured solution.
Patent GB-1128409-A (GB)
Title: Improvements in mixing machines
Inventor: EDWARDS ALBERT
IPC: B01F27/73
Filed: 1966-07-04
Abstract: 1,128,409. Mixing apparatus. BAKER PERKINS Ltd. 26 July, 1967 [4 July, 1966], No. 29971/66. Heading B1C. A mixing machine has a container with a resilient wall portion which on operation of the stirrer continually expands and contracts. The machine is used for milling foundry sand, and may be a batch mixer (Figs. 4 and 5, not shown) or, as shown, a continuous discharge mixer. The container is in the form of a trough closed at the top by flat plates at outer sections 1a, Ic, and by a rubber sheet 2 at the central section 1b, and a stirrer shaft 3 extending along the trough has angled plates 7 which are eccentrically disposed on the shaft to convey sand from the inlet 4 to the outlet 5. The central section is maintained full of sand by a screw 7a at the entrance to the section; by baffles 7b in the section, and by an adjustable gate 8 at the exit. Starch and water are introduced at 4 with the sand, and linseed oil at 6. In another embodiment the central section is a rubber tube or alternatively the container may be of constant section with the central section defined by an internal rubber sheet extending across the container (Fig. 4, not shown).
Patent GB-494455-A (GB)
Title: Method of manufacturing gas cylinders
IPC: B21D51/24
Filed: 1937-11-03
Abstract: 494,455. Making hollow ware. VULITCH, V. A. DE. Nov. 3, 1937, No. 30060. [Classes 83 (ii) and 83 (iv)] Uniting by fusion.- Gas cylinders are made with a tubular body, an end element consisting of a neck b and shoulder portion a being introduced into the tube prior to welding on at f an outer portion A having an opening large enough to admit an electrode. The shoulder parts a, A are then brought into contact and secured by welding metal applied at e.
Patent GB-957050-A (GB)
Title: Improvements in or relating to television receivers
IPC: H04N5/58
Filed: 1960-09-01
Abstract: 957,050. Television. PHILIPS ELECTRICAL INDUSTRIES Ltd. Sept. 1, 1960 [Sept. 4, 1959], No. 30186/60. Heading H4F. In a circuit arrangement for controlling the characteristics of a television receiver image in accordance with ambient illumination wherein photo-electric means 11 (a photo-conductor) responds to ambient illumination, a first control voltage is applied to the screen grid of the video amplifier 5 so as to control image contrast and a second control voltage is applied through a rectifier 20 biased at 22 to the grid of the cathode-ray tube 7 so as to control image brightness. The arrangement operates so that at low levels of ambient brightness only image contrast is controlled, the image brightness remaining constant since the second control voltage is insufficient to render rectifier 20 conducting, whereas above the predetermined brightness level (for example 50 apostilbs) at which the rectifier becomes conducting, picture brightness is controlled and the contrast is increased to a considerably less extent due to a flattening of the control characteristic of the video amplifier 5 and the detector which supplies it. Specification 921,014 is referred to.
Patent GB-340053-A (GB)
Title: Improvements in or relating to wooden buildings
IPC: E04B2/56
Filed: 1929-10-04
Abstract: 340,053. Walls for wooden buildings. MOTTIER, A. D., La Sallaz, near Lausanne, Switzerland. Oct. 4, 1929, No. 30211. Convention date, Oct. 4, 1928. [Class 20 (iv).] Walls for wooden buildings consist of a timber f r a m ework 1, a covering of matchboard 2 and fireproof material 3 such as agglomerated cork sheets, or wood chips and cement, or straw and plaster, and an outer roughcast layer 4 which may be coloured and grooved to represent boarding or masonry. The inside may be lined with matchboarding or lath and plaster 7. Specification 21141/02, [Class 20, Buildings &c.], is referred to.
Patent GB-342363-A (GB)
Title: Improvements in oil fuel burners
IPC: F23D11/10
Filed: 1929-10-05
Abstract: 342,363. Spray burners. JONES, J. W., 16, Middleton Street, Bethnal Green, London. Oct. 5, 1929, No. 30213. [Class 75 (i).] In a spray burner of the type comprising three concentric passages, of which the outer passage m supplies steam or air under pressure, and the intermediate passage n supplies oil, air at atmospheric pressure is drawn by the ejector action through the central or axial passage and a valve v is provided for regulating the amount of such air. The burner shown comprises integral outer and inner walls b, c on the front ends of which conical nozzles f, g are adjustably mounted by screwing. The nozzle f is of double conical form, the outer divergent face being at an angle of approximately 45‹ with the axis. The inner tube p forming the air supply duct and having a tapered front end is screwed into the body so as to be longitudinally adjustable, the rear end of the tube projecting from the burner body and having mounted on it the valve v which controls the admission of air. Right and left-hand riflings s are formed on the inner surface of the tube p.