baber/WOPTO huggingface dataset:
Patent GB-1186836-A (GB)
Title: A process for the purification by chlorination of roasted iron sulphide materials
Inventor: JENSFELT TORSTEN ELI
IPC: C22B1/08
Filed: 1968-06-25
Abstract: 1,186,836. Purification by chlorination of roasted iron ores. BOLIDEN A.B. 25 June, 1968, No. 30128/68. Heading C1A. A sulphide bound ferruginous material, which may be mixed with oxide bound ferruginous material, and which contains Cu, Zn, Sn, Pb, Co, Ni, Au, Ag, As, Bi, Sb and S compounds, is roasted (as described in Specification 1,116,519) in a fluidized bed at 700-1100‹ C. with such an amount of oxygen that the oxygen pressure in the resulting roaster gas lies within prescribed limits (set out in claim 1), whereafter the material, in that condition, is separated from the roaster gases and treated, while still hot, with chlorine, or another gas containing chlorine or chlorine compounds, or material giving off gas containing chlorine or chlorine compounds. Free oxygen may be excluded during the chlorinating stages. The evolved substances may be recovered from the waste gases and the chlorine content may also be recovered and recirculated. The chlorination is usually carried out at 600‹ to 1100‹ C., preferably in a fluidized bed, but other suitable reactor types are discussed. When chlorine is used as the chlorinating agent and the roasted material contains sulphides and magnetite, then free oxygen usually in the form of air, is added to the chlorine. Steam may also be employed as an additive to reduce chlorination of iron oxides. If the roasted material contains no sulphide the chlorine may be diluted with an inert gas, e.g. nitrogen, carbon dioxide. If hydrogen chloride is used as the chlorinating agent less oxidizing conditions may be employed than in the case of chlorine but there must be sufficient oxygen to drive off all the sulphur. The roasted material may also be desulphurized in a separate reactor before passing to the chlorinating reactor by treatment with an oxygen containing gas or a solid oxidant such as ferric oxide. If an oxygen containing gas is used this may be diluted with an inert gas to reduce conversion of the magnetite in the roasted material to haematite. Iron oxide may also be added during the desulphurization stage and sulphide may be added to help drive off arsenic. Owing to the heat evolved in the oxidation of magnetite to haematite cooling may be necessary in the desulphurization and/or chlorination stages and various means of achieving this are disclosed.
Patent GB-1004172-A (GB)
Title: Improvements in or relating to moulded articles
IPC: C08L27/12
Filed: 1962-08-07
Abstract: Shaped articles comprising moulded shapes, sheets, films, threads, strands, tubes, profiles and hollow bodies are obtained by processing polymers selected from (a) polyvinyl fluoride with k values according to Fikentscher above 50 and softening points under light pressure according to Ueberreiter above 200 DEG  C., and (b) polyvinylidene fluoride with k values according to Fikentscher above 40 and moduli of torsion above 100 kg./cm.-2 at 160 DEG  C.  The polymers are prepared using boron compounds of the general formula BRa1Rb2Rc3Xd, where R1, R2 and R3 are the same or different and are alkyl or alkoxy radicals having 1 to 10 carbon atoms, X is a hydrogen or a halogen atom and "a," "b," "c" and "d" are each 0, 1, 2 or 3 provided that (i) when X is a halogen atom "d" is not 3 and (ii) the sum of "a" + "b" + "c" + "d" equals 3.  The polymerization may be carried out in the presence of water, with or without surface-active substances, or in organic solvents which may be removed after polymer formation. Oxygen or oxygen compounds may be used to activate the boron catalyst.  The moulded articles are prepared by the known methods.
Patent GB-996621-A (GB)
Title: A combined subjective and objective refracting device
IPC: A61B3/103
Filed: 1961-08-22
Abstract: 996,621. Sight-testing apparatus. H. M. F. ASHER. Aug. 22, 1962 [Aug. 22,1961], No. 30162/61. Heading G2J. The apparatus described and claimed in Specification 830,141 is modified by the omission of the transparency so that an image of light source 5 can be focused on the patient's eye and the latter received through semi-reflector 3. Between semi-reflector 3 and the observed may be an additional lens having the same focal length as lens 2 and disposed of the same distance from semi-reflector 3 so that an aerial image of the patient's eye is formed at a distance from mirror 3 equal to that of the source 5. This aerial image may itself be received through a magnifying eyepiece; which is coupled for movement with source 5 to maintain the symmetry of the arrangement. The eyepiece and the additional lens may be arranged so that either or both may be swung in a and or position. Source 5, lens 2 or the additional lens may also have a transverse movement in any meridian or be given a circular movement in this own plane. The instrument may be used to carry out three different methods of operation as explained in the Specification.
Patent GB-1002444-A (GB)
Title: Shortening agent and production thereof
IPC: C07C69/704
Filed: 1961-08-22
Abstract: A citric acid ester supplement for shortening compositions (see Division A2) is prepared by reacting anhydrous citric acid with fatty acid partial glycerides, preferably mixed with a saturated monohydric alcohol having 12 to 24 carbon atoms per molecule, at temperatures between 145 DEG  and 165 DEG  C., in an inert atmosphere e.g. a stream of nitrogen, and under such conditions, e.g. reduced pressure, that the water produced is removed as vapour and all the carboxyl groups are esterified, the molar ratio of citric acid to the other ractants ranging from 1 : 2.7 to 1 : 3.3 and preferably being 1 : 3. The partial glycerides may be monoglycerides, e.g. comprising glycerol monostearate, or mixtures of monoglycerides and diglycerides such as those of natural or hydrogenated cottonseed oil, soybean oil, coconut oil and palm oil.  The monohydric alcohol may be stearyl or cetyl alcohol.  Specification 1,002,445 is referred to.
Patent GB-513982-A (GB)
Title: Improvements in or relating to refrigerator cabinets
IPC: F25D23/08
Filed: 1938-10-19
Abstract: 513,982. Refrigerators. WESTINGHOUSE ELECTRIC & MANUFACTURING CO. Oct. 19, 1938, No. 30232. Convention date, Nov. 27, 1937. [Class 29] The inner and outer spaced shells 14, 15 and 34, 35 of a cabinet body and the door respectively are connected by "breaker" strips 31, 37 located in the plane of the cabinet front and secured by screws 32 to inturned flanges of the shells. The strips may be of synthetic resin or of fabric laminae united by resin and a rubber gasket 41 may be secured by the screws 39 at the outer edge of the door. The inner face of the door does not project inwards into the door opening, and thus allows the full storage space to be utilized, and minimizes displacement of co:d air when the door is opened and closed.
Patent GB-465348-A (GB)
Title: Improvements in water paints
IPC: C09D129/10
Filed: 1935-11-02
Abstract: Water-paints are prepared containing as the binding-agent a water-soluble interpolymerization product of vinyl methyl ether and a water-insoluble vinyl compound polymerizable under similar conditions.  Suitable vinyl compounds include N-vinyl carbazole, vinyl diarylamines, styrene, vinyl ethyl ether, vinyl propyl ether, vinyl butyl ether, vinyl isobutyl ether, vinyl ethers of higher aliphatic alcohols obtainable by hydrogenation of fatty acids such as octyl, decyl, dodecyl, tetradecyl, octodecyl, docosyl vinyl ethers, vinyl ethers of wax alcohols, vinyl ethers of unsaturated alcohols such as vinyl oleyl ether, phenyl and cyclohexyl vinyl ethers, vinyl ethers of alcohols obtainable by reduction of resinic and naphthenic acids such as vinyl hydroabietinol ether, vinyl ethers of glycerine aldehyde and ketone acetals, vinyl ethers of acetal-like substituted aliphatic polyhydroxy compounds such as the vinyl ether of b -diacetone fructose, of diacetone glucose and the vinyl ethers of the corresponding formal or acetal compounds.  The water-paints, which may contain any organic or inorganic colours or pigments, may be applied to plasterings of all kinds, such as old or fresh lime or cement plaster, bricks, sandstone, and over old coatings.  In examples, water-paints are prepared from water and chalk, using as binding agents interpolymers of vinyl methyl ether and vinyl ether of sperm oil alcohols, vinyl octodecyl ether, vinyl iso-butyl ether, vinyl hydroabietinol ether and vinyl glycerine formal ether, the interpolymers being prepared in the presence of boron fluoride dihydrate at temperatures below 0 DEG  C.  The Provisional Specification refers to the use, as binding agents in the water-paints, of water-soluble polymerization products of vinyl ethers or of polyvinyl ethers that will yield stable emulsions. Specification 378,544 is referred to.
Patent GB-904344-A (GB)
Title: Mobile spraying device
IPC: B05B9/08
Filed: 1959-09-04
Abstract: 904,344. Crop sprayers. HUDSON MANUFACTURING CO., H. D. Sept. 4, 1959 [March 6, 1959], No. 30322/59. Class 69 (3). A tank 12 of spraying solution is carried on a tubular wheeled frame 10 from which extends a handle 19 pivotally mounted between extensions 14, 14a of the frame by a cross-pin 22. An air pump 13 for pressurizing the spray solution depends through the tank-filling opening 39, and is sealingly held in position by a cover 46 having camming surfaces 48 which engage threads 49 in the neck 38 of the tank. In the position of the handle 19, shown in Figs. 1 and 6, for pushing the sprayer about, it is supported by cross braces 16, 17 on the extensions 14, 14a, and locked by a pin 26 extending from a plunger slidable within the lower end of the handle. The pin automatically engages an opening in an extension of the cross brace 17 when the handle is raised to the position shown. When the pump is required to be operated, the handle 19 is lowered about its pivot 22, and a locking clip 59 engages the pump handle 53, and the handle 19 is reciprocated. Spray liquid is fed through a flexible tubing 63, grip 64 and extension 67 to a spray nozzle 68 and flow is controlled by a valve operated by a trigger 66. A storage clip 69 is provided.
Patent GB-768381-A (GB)
Title: Improvements in or relating to tobacco smoke filters
IPC: A24D3/10
Filed: 1954-10-21
Abstract: 768,381. Tobacco smoke filters. ECUSTA PAPER CORPORATION. Oct. 21, 1954 [Dec. 23, 1953], No. 30326/54. Class 130 [Also in Group VIII] Paper weighing not more than 25 grammes per square metre for forming a tobacco smoke filter is crumpled before folding in a paper wrapper. In Fig. 1 a number of layers of paper 2 weighing less than 16 grammes per square metre, e.g. paper made from high alpha cellulose pulp, are passed with a paper wrapper 1a through a conventional wrapping cone 3 which serves to crumple the paper the resulting filter rod being cut into plugs by a knife 12. The paper may be creped or embossed before crumpling and may be impregnated with a waterproofing agent such as melamine, formaldehyde resin, urea formaldehyde resin, or viscose. In Fig. 3, three sheets 18, 19, 20 of embossed paper weighing about 20 grammes per square metre are separately crumpled by passing through sets of orifices of decreasing diameter in plates 28, 29, 30, the crumpled sheets being combined and subsequently wrapped in a wrapper. The sheets 18 ... 20 may be single sheets or sheets composed of several layers of paper and the paper may be substantially unfibrillated. The wrapper 1a may weigh about 20 grammes per square metre but preferably from 40 to 60 grammes per square metre.
Patent GB-652218-A (GB)
Title: Thermopump heating systems
IPC: F25B30/02
Filed: 1947-10-07
Abstract: 652,218. Heat pumps; steam-generators. EVANS, J. H. Oct. 7, 1947, No. 30406/49. Divided out of 652,162. [Classes 29 and 123(ii)] Steam is generated by a heat pump comprising two or more refrigerating systems in cascade using refrigerants of different boiling points, the evaporator of one cooling the condenser of another and the compressors being driven by an internal combustion engine or gas turbine the waste heat of which is used to supplement the heat derived from the low-temperature source. Compressed refrigerant vapour from the low pressure cylinder 1A of the two-stage compressor 1 passes by a pipe 4 to an interstage cooler 6 and thence by a pipe 7 to the high pressure cylinder 1B whence it passes by a pipe 8 to the primary condenser comprising annular headers 9, 11 connected by a ring of vertical tubes 10 in an annular cylinder 12 containing water and forming the evaporator of the secondary refrigerating system. Condensed refrigerant is collected in a vessel 15 and passes through a precooler 17 and pipe 18 to a vessel 19 under the control of a float valve 20. From the vessel 19 the refrigerant is fed to a flooded primary evaporator 22 through which the liquid or gas forming the source of low temperature heat is circulated by pipes 22a, 22b. Vaporized refrigerant returns to the compressor 1 by pipe 23, vessel 19, pipe 25, precooler 17 and pipe 3. Water is vaporized in the cylinder 12 by the condensation of the refrigerant and the steam rises to a chamber 13 and passes by a pipe 34 to a compressor 33 which delivers the compressed and superheated steam to a secondary condenser 37 within the annular cylinder 12. The condenser tubes 37 extend between headers 36, 38 and are surrounded by water to form the steam raising unit Condensed water from the header 38 is collected in a vessel 40 and supplied to the chamber 13 whence it passes by a pipe 43 to the secondary evaporator 12. The feed water for the steam raising unit is contained in a float controlled tank 45 and passes by a pipe 49 to the interstage cooler 6, where it is heated, and by a pipe 50 to a boiler feed pump 51 which delivers it through a non-return valve 53 to a heat exchanger 54 through the tubes of which pass the exhaust gases from the internal combustion engine 2. The water space of the heat exchanger 54 is connected with the water space around the secondary condenser tubes 37 by pipes 57, 58 the water level being controlled by a float switch 59. The cooling water from the jacket of the engine 2 passes through pipes 27 in the interstage cooler 6 to heat the feed water passing therethrough. A tank 30 keeps the cooling water system filled, being connected with the jacket by a thermostatically controlled valve 32. The steam raised by the secondary condenser 37 passes to a storage drum 62 and through pipe 63 to the place of utilization, from which condensate returns through pipe 47 to the feed water tank 45. Specification 652,162 is referred to.
Patent GB-679471-A (GB)
Title: Electron discharge tube for amplifying micro-waves
IPC: H01J25/44
Filed: 1948-11-23
Abstract: 679,471. Travelling wave-tubes. TELEFONAKTIEBOLAGET L. M. ERICSSON. Nov. 23, 1948 [Jan. 12, 1948], No. 30411/48. [A Specification was laid open to inspection under Sect. 91 of the Acts, June 2, 1949.] Class 39 (i). [Also in Group XL (c)] A travelling wave amplifier comprises a waveguide 8, Fig. 1, of serpentine or zig-zag form in a single plane surface, a cathode 4 parallel and adjacent to the guide, and means for producing a magnetic field perpendicular to the plane of the paper, and the wave and beam velocities are correlated to produce amplification. The guide may be a wire conductor as shown or a zig-zag shaped slot in a sheet metal band Accelerated electrons return to the cathode while the retarded ones go partly to the guide 8 and partly to an anode at the right-hand end of the tube (not shown). A curved sheet focusing electrode 5 at cathode potential or less assists in concentrating the electrons near the guide. It is supported by and connected at either end to metal tubes 3 sealed through glass envelope 2. Glass beads 13 support the filament 4 within tubes 3 and maintain the vacuum. The input is via coaxial line 6, 7 with tunable stubs 9, 10 for impedance matching. The tube 2 is enclosed in metal screen 1 with movable impedance matching piston 11 formed by two annular metal rings with insulation between. In a modification, Fig. 3 (not shown), the screen at the input end is in two parts connected by a metal disc sealed through the tube envelope and forming the input coupling to the zig-zag guide. The input means is a wave-guide with a tuning piston. The left- and right-hand halves of the arrangements of Figs. 1, and 3 (not shown) may be similar or alternatively one half may be as in Fig. 1 and the other as in Fig. 3 (not shown). The Specification as open to inspection under Sect. 91 describes similar embodiments in which the delay line is a helix. In Fig. 1, the collecting anode may be part of a helix which replaces zig-zag guide 8, e.g. one or several " narrow windings." In Fig. 3 (not shown), the collecting anode may be a disc similar to the disc at the input end. Prior art devices with zig-zag or serpentine delay lines, but without a magnetic field, are referred to. This subject-matter does not appear in the Specification as accepted.
Patent GB-162330-A (GB)
Title: Improvements in silencing mechanism for waste water preventers, cisterns or the like
IPC: E03D1/08
Filed: 1919-12-05
Abstract: 162,330. Holt, J. Dec. 5, 1919. Siphon - discharge water-waste preventers. -In a silencing-device for flushing-cisterns of the type in which air is admitted to the siphon through a valve arranged well below the water-level and formed by the top of a float, which opens the valve when the water-level falls sufficiently, the valve is formed by a conical surface 5 on the float 6 making contact with a rubber seating 9 carried on an extension 11 adjustably attached to the air-admission pipe 4. The float is formed with a stem 10 sliding in the extension 11. Reference has been directed by the Comptroller to Specification 26757/12.
Patent GB-346727-A (GB)
Title: Filter circuit for smoothing pulsatory direct current or rectified alternating current
IPC: G05F3/12
Filed: 1929-10-08
Abstract: 346,727. Supply systems. KÍRÍS, L., 39, Gyep Utca, Budapest. Oct. 8, 1929, No. 30508. Convention date, Oct. 16, 1928. Void [Published under Sect. 91 of the Acts]. [Classes 38 (ii) and 38 (iv).] Regulation, automatic ; supplying consuming devices.-A positive operating voltage and a negative bias voltage are supplied from D.C. mains or from an A.C. rectifier, by ohmic resistances b, c connected in series with a glow discharge tube a (or its equivalent) across the supply leads. The voltage tapped off at the points A, O is substantially independent of the current taken and negative bias is supplied from the terminals O, G. The circuit acts as a filter for smoothing out ripples in the supply voltage.
Patent GB-743093-A (GB)
Title: Blasting apparatus
IPC: B24C3/26
Filed: 1953-11-06
Abstract: 743,093. Toothed gearing. PANGBORN CORPORATION. Nov. 6, 1953 [Nov. 28, 1952], No. 30735/53. Class 80(1) [Also in Groups XXIII and XXX] A gear box drive to an endless conveyer (see Group XXX) in a sand-blast apparatus (see Group XXIII) includes an offset countershaft 187 which is separately geared to the input shaft 185 and the output shaft 186, and a torque arm 170 which normally prevents the housing 183 of the gear box from rotating. If the driving torque rises above a predetermined value, a latch plate 174 is swung about its pivot 176 until notches 184 and 180 become disengaged from a spring-loaded plunger 182 and a bolt 162 on the gear box housing, respectively, whereupon the latter rotates to interrupt the drive. The notch 180 has a spring- biased side portion. Specification 743,107 and U.S.A. Specification 2,447,802 are referred to.
Patent GB-225706-A (GB)
Title: A new or improved clip for use with material which has been wound on reels or spoolsor into balls or the like
IPC: B65H75/26
Filed: 1923-12-08
Abstract: 225,706. Turner, C. E. Dec. 8, 1923. Reels or bobbins. - A resilient clip 1 of celluloid or like non-cutting material is provided at one end with a hole 2 and a communicating oblique slit 4 by which the end 3 of the thread can be inserted. A V-shaped opening 5 facilitates the insertion of the thread. Specification 6233/98 is referred to.
Patent GB-1023072-A (GB)
Title: Improvements in or relating to lithographic printing
Inventor: BROWNING LESLIE JOHN
IPC: B41M1/30
Filed: 1961-08-28
Abstract: 1,023,072. Printing apparatus; set-off preventing. INCHBROOK PRINTERS Ltd. Aug. 10, 1962 [Aug. 28, 1961], No. 30973/61. Heading B6C. In a lithographic rotary offset printing machine in which sheets 46 of plastic material are printed, set-off is prevented by interleaving the printed pile 50 with sheets of paper 48 which have been fed through the machine alternately with the plastic sheets. The thickness of the paper is such that it does not receive an impression from the blanket cylinder 42 so that each plastic sheet is imprinted with an impression which has been inked twice. The interleaved pile 50 may be fed to other printing machines or couples if multi-impression and/or -colour printing is required. Two paper sheets may be passed in succession between the blanket and impression cylinders 42, 44 for each plastic sheet and in this case the image on the blanket is inked three times.
Patent GB-690814-A (GB)
Title: Improvements in or relating to seed pellets
IPC: A01C1/06
Filed: 1949-12-02
Abstract: A composition for applying as a finishing coating to seeds (see Group I) comprises a mixture of finely divided native sub-bentonite clay and a cellulosic material e.g. wood flour, straw, cotton or lint preferably in the ratio of at least 50 per cent. of the former and from 5 to 50 per cent. of the latter by weight.  Up to 45 per cent. by weight of other materials such as sand, alluvial clay, exfoliated vermiculite, rock dust, acid activated sub-bentonite and fertilizer may be added whilst the amount of cellulosic material and/or sub-bentonite clay is correspondingly reduced.  Specification 690,813 is referred to.
Patent GB-1441342-A (GB)
Title: Center-filled pet food product
IPC: A23K1/00
Filed: 1974-07-12
Abstract: 1441342 Semi-moist coated pet food QUAKER OATS CO 12 July 1974 [25 March 1974] 31031/74 Heading A2B An animal food comprises an expanded cereal bearing extrudate surrounding an intermediate moisture center filling comprising per 100 parts by wt. (on a dry basis) from 10-50 parts meat or meat by products, 15-40 parts sugar, or sugar equivalents, 10-40 parts vegetable protein material and an effective amount of an antimycotic, wherein the filling has a moisture content of 15-40%, a pH of 4.5-7.0 and a water activity of 0.7-0.9. The food is made by extruding the cereal through an annular die under puffing conditions whilst centre extruding the semi-moist filling made by mixing the components together, and drying the food to a moisture content of the cereal extrudate of less than 15%.
Patent GB-1450920-A (GB)
Title: Data processing apparatus
IPC: G06F9/42
Filed: 1973-11-13
Abstract: 1450920 Data processors CONTROL DATA CORP 13 Nov 1973 [8 March 1973] 31036/75 Divided out of 1450918 Heading G4A The disclosure is identical to that of the parent application but the claims relate to selection of an incremented object program address, an incremented exchange address (both relative to the same reference address) or an absolute address of a program lying outside the field of the object program.
Patent GB-324135-A (GB)
Title: Improvements in or relating to endless tracks for vehicle wheels
IPC: B62D55/04
Filed: 1928-10-26
Abstract: 324,135. Catchpole, W., and Blake, J. W. Oct. 26, 1928. Endless-track vehicles. - A non- elastic detachable endless-track, particularlv for use on the two rear road wheels at either side of a six-wheeled vehicle, comprises traction treads 1, 2 connected together by longitudinal and transverse hinge pins 3, 6 respectively. The transverse pins 6 are connected together by means of links 5 having flared openings 7 to allow universal movement. The pivot 3 allows each tread or shoe to lie flat on the ground as shown at the right of Fig. 2 with a wheel 12 passing over the shoe, and also allows the shoe to fold when passing over the top of the wheel as shown at the left of Fig. 2. Projections 9 are formed on the shoe for engagement with the wheel and ground-engaging projections 10 are formed on the under side of the shoe.