baber/WOPTO huggingface dataset:
Patent GB-1451073-A (GB)
Title: Apparatus for removing particles from an airstream
IPC: F01N3/28
Filed: 1973-08-28
Abstract: 1451073 Air fitter; cyclone separator P A HAMMERQUIST 28 Aug 1973 [21 Sept 1972] 40552/73 Headings BIT and B2P Dust-laden air is delivered to a central chamber 18 and passes through ducts 22 into outward-flow canvas filter bags 30, which are successively cleaned by reverse flow induced by suction fan 60 which is connected to the mouth 20 of each duct in turn by a rotating nozzle 36. As shown chamber 18 is mounted above and downstream of cyclone separator 10 into which air is delivered under pressure at 12, and the dust-laden air extracted from bags 30 by fan 60 is recycled to second inlet 62 of the cyclone. Bags 30 are located out of doors but may be protected by a roof 35. Each duct 22 supports an open-ended cage (24) which is smaller than the enclosing bag 30, e.g. 1/3 to ¥ its expanded volume (Figs. 2, 3, not shown), to allow bag contraction during flow reversal as shown at 86. Bags 30 have slidefastenings 33 and draw ropes which secure them about ducts 22. Mouths 20 of ducts 22 may have a total area equal to that of chamber inlet 14. Nozzle 36 is vertically tapered inwards and supported for rotation by a central bearing (40) and possibly a lower peripheral caster running on channel (44). The nozzle has an inlet end which makes a sliding seal with the wall of chamber 18 and bridges the gap from one mouth 20 to the next (Fig. 3).
Patent GB-1128870-A (GB)
Title: Alkylation of naphthalene
Inventor: MARCHESE JAMES SALVATORE
IPC: C07C2/70
Filed: 1967-09-05
Abstract: 1,128,870. Alkylating naphthalene. AMERICAN CYANAMID CO. 5 Sept., 1967 [13 Oct., 1966], No. 40578/67. Heading C5E. Naphthalene is alkylated with a C 2-4 olefin in the presence of a BF 3 -H 3 PO 4  adduct in an amount of at least 30 weight per cent based on the combined reactants. A solvent, e.g. CCl 4 , may be present. The alkylate produced is a mixture of mono- and poly-alkylated naphthalenes, and in the mono-alkylate the #- isomer predominates. Examples describe alkylation with propylene and cis-2-butene.
Patent GB-991437-A (GB)
Title: Gear for washing machines
IPC: F16H3/00
Filed: 1962-10-30
Abstract: 991,437. Washing machines. FICHTEL & SACHS A.G. Oct. 30, 1962 [Nov. 2,1961], No. 40983/62. Addition to 977,638. Heading D1A. [Also in Division F2] In a washing machine driven through a twospeed gear, a step-down drive in either direction for washing is obtained when an electric motor shaft 1 formed with a sun gear 3 drives through planet pinions 5, meshing both the sun gear and a fixed ring gear 4, to a carrier 7 containing cam pockets receiving the rollers 11 of a friction ratchet clutch transmitting drive to the cup-shaped end of an output shaft 2 upon which is secured a driven pulley 14. The clutch rollers 11 project through a cage 12 engaging frictionally a spring 13 carried by the gearcase 8, to initiate the necessary wedging action of the rollers on take-up of drive. A direct drive in one direction only for spin drying is obtained when a non-rotary rod 15 is slidden either by hand or electromagnetically to engage a brake stop 16 at its end with the end 24 of a coiled ratchet clutch spring 23 wrapped around the end of a sleeve 22 around which is also wrapped a ratchet clutch spring 19, fast at one end with a connector 1<SP>1</SP> mounted on the motor shaft 1 and at the other end with the sleeve. The retardation imposed by the application of the brake stop 16 expands the two clutch springs 19, 23 for direct clutching of the motor and output shafts 1, 2, the ratchet clutch 11 &c.now over-running.
Patent GB-939271-A (GB)
Title: Digester
IPC: D21C7/00
Filed: 1960-11-29
Abstract: 939,271. Continuous treatment digesters. BAUER BROS CO. Nov. 29, 1960 [Nov. 30, 1959], No. 41056/60. Class 64 (1). A continuous treatment digester of the moving conveyer type has means for circulating conditioning fluids relative to the fibrous material through zones in the tube shell, these zones lying beneath the surface 19 of the liquor. The digester includes a tube shell 10, a partition 16 extending longitudinally in the shell, an inlet 13 and an outlet 15 for a fibrous material for treatment, a continuous conveyer consisting of an endless chain 21 with flights 22 arranged longitudinally in the shell taking a path over the ends of the partition 16. The conveyer conducts the fibrous material from the inlet 13 to the outlet 15 in a continuous moving fashion. The central partition 16 presents upper and lower surfaces 34 and 35 respectively which, in width, correspond approximately to the internal diameter of the tube shell 10, facing upper and lower flow or flight paths 17 and 18 respectively. The walls defining such surfaces are held apart by spacers 36. In surface 34 there are formed recesses 37, 38 and 39, and similarly in surface 35, recesses 41 and 42. These recesses serve selectively as inlet and outlet chambers for circulating the liquor or different liquors, and each have individual connections 44 to the exterior of the shell 10. Also, each recess has a rectangular hollow screen 45 which prevents clogging of the connection 44. Consider outlet chamber 38 and inlet chamber 37. Conditioning fluid is drawn from outlet 38 by pump 47 via line 46 and returned to the inlet 37. Unit 49 can be used to change the temperature or chemical concentration or both of the circulating fluids. Similarly, chamber 39 is an inlet and chamber 41 an outlet, and chamber 42 is an outlet with inlet 43 situated in the wall of the tube shell 10. Under certain conditions conditioning fluid may be sprayed into the digester above the surface 19 of the liquor.
Patent GB-962123-A (GB)
Title: Improvements in processes for finishing paper
Inventor: BUTTREY DOUGLAS NORTON
IPC: D21H19/58
Filed: 1961-11-17
Abstract: 962,123. Laminating. IMPERIAL CHEMICAL INDUSTRIES Ltd. Oct. 26, 1962 [Nov. 17, 1961], No. 41221/61. Heading B5N. [Also in Division B2] A coating composition 5 is deposited on the surface of a paper or paper board substrate 1 and is given a smooth or glossy surface by contact with a smooth surfaced thermoplastic organic polymeric film 4 at a temperature of at least 80‹ C., after which the film 4 is separated from the coated surface, the organic polymeric film being subjected to a temperature of at least 80‹ C. before contacting the coating composition. In an example, the film 4, e.g. polyethylene terephthalate preheated to a temperature of 100 ‹ C. to 120 ‹ C. and paper 1 are passed between nip rollers 2, 3, and into the nip between the angle formed by the film and paper is fed an aqueous dispersion comprising 65 parts by weight vinyl chloride/vinyl acetate (16%) copolymer and 35 parts by weight butadiene (30%)/methyl methacrylate copolymer. The sandwich thus formed is heated in an infra-red drying chamber 6 at a temperature of above 80‹ C. after which the film 4 is separated from the coated surface and heated by a roller 8 to 125‹ C. The coating composition may be a dispersion formed from china clay, casein, and copolymer of butadiene-1,3 and methyl methacrylate. Specification 551,440 is referred to.
Patent GB-1384226-A (GB)
Title: Pressure transducer
IPC: G01L13/02
Filed: 1973-09-04
Abstract: 1384226 Pressure transducer ROSEMOUNT Inc 4 Sept 1973 [5 Sept 1972] 41448/73 Heading G1N A capacitive pressure transducer of a type described in Specification 1318780 (Division G1) has a diaphragm 12 having a central sensing portion 30, a peripheral mounting ring 31 fixedly mounted on the housing 11 and a web portion 32 joining the ring and the central portion; the web portion having a thickness less than the thickness of said central portion, the radial length L of said web between the ring and the central portion in relation to the thickness and diameter D of the central portion being such that when the  diaphragm is deflected under pressure the deflected shape of its central portion substantially corresponds to the deflected shape of a free edge diaphragm. In a preferred embodiment the ratio D/L lies between 6 and 60 and the ratio L/T, where T is the thickness of the web, lies between 0À5 and 5À0. In an alternative embodiment Fig.3 the web portion 37 increases in thickness towards the outermost edge of the web from thickness t adjacent the central portion to a thickness T adjacent the ring where T/t is greater than 1 and no greater than 4.
Patent GB-951483-A (GB)
Title: Improvements in or relating to the production of hose
Inventor: KENNAWAY ALEXANDER
IPC: B29C48/151
Filed: 1961-11-22
Abstract: 951,483. Extruding rubber and synthetic plastic tubing. BTR INDUSTRIES Ltd. Nov. 15, 1962 [Nov. 22, 1961], No. 41752/61. Heading B5A. [Also in Division F2] A process for the continuous production of braided hose comprises extruding a tube of elastomeric material on to a mandrel which extends from the extruder into the tube and from which pressure fluid escapes through perforations to inflate and support the tube during the subsequent braiding operation. The elastomeric material is a natural or synthetic rubber or a rubber-like material. Appropriate materials together with appropriate additives and fillers are listed in the Specification. The elastomer may be vulcanized before or after braiding in annular chambers movable along the mandrel and coaxial with it. Silica or asbestos fibres or glass fabric may be used to fireproof and/or to reinforce the elastomer. The extruded tube may have a textile covering and/or a spiral wire winding applied before or after braiding. The body of the mandrel is smaller in diameter than the inside of the tube and admits air at 5 to 100 1b./sq. inch pressure into the intervening space through a large number of holes or slots. This air is contained between a back flange at the extruder end and a similar flange or alternative seal at the mandrel top. The latter seal may include a valve to regulate the pressure. The braiding, which is of glass or synthetic plastic fibres or, preferably, high tensile steel wire, is wrapped around at about 55 degrees angle to the longitudinal axis of the hose by a braiding machine mounted on a trolley which is movable along the length of the mandrel.
Patent GB-1012436-A (GB)
Title: A grain classifying device
Inventor: TAGUCHI SHIGEMOTO
IPC: B07B13/11
Filed: 1961-11-22
Abstract: 1,012,436. Separating apparatus. KYOWA NOKI CO. Ltd. Nov. 22, 1961, No. 41845/61. Heading B2H. In a grain separating device a mixture of hulled and unhulled grain and foreign matter such as earth or sand are fed from a hopper 6 on to inclined boards arranged in tiers 3, 3<SP>1</SP>, 3<SP>11</SP> which boards are mounted on rollers 5 running on inclined rails 9 and oscillated by an eccentric 12 through a shaft 15 and the hulled grain leaves the lower end of the tiers 3, 3<SP>1</SP>, 3<SP>11</SP> through an outlet 26, the unhulled grain leaves through an outlet 27 and a mixture of grain and foreign matter leaves through an outlet 21. The outlets 26 and 27 are adjustable across the face of the tiers by screwed rods and cranks, Fig. 4 (not shown). An inclined board 17 is attached to the tops of the tiers 3, 3<SP>1</SP>, 3<SP>11</SP> to facilitate separation of the grain.
Patent GB-1279501-A (GB)
Title: Method for preparing vinyl halide polymers having improved processing characteristics and polymers prepared thereby
IPC: C08F2/38
Filed: 1969-08-22
Abstract: 1279501 Polymerizing vinyl halides STAUFFER CHEMICAL CO 22 Aug 1969 [29 Aug 1968] 41897/69 Heading C3P Vinyl halide or vinylidene halide polymers are formed in aqueous suspension in the presence of a polymerization modifier in at least two stages using different temperatures. In the examples the first temperature is 65‹ C. and the second 52-59‹ C. although the lower temperature may be used first. Mercaptans are used as modifiers in polymerizing vinyl chloride. In a preferred embodiment a mixture of two initiators is used, e.g. t-butyl perpivalate and azobisisobutyronitrile.
Patent GB-889573-A (GB)
Title: Improvements in or relating to indicating devices for heat treatment
Inventor: RITCHIE ALAN RUTHERFORD
IPC: G01K3/04
Filed: 1959-12-09
Abstract: 889,573. Temperature indicators. MACARTHYS Ltd. Nov. 25, 1960 [Dec. 9, 1959], No. 41936/59. Class 97(3). An indicator for heat treatment comprises an envelope having first and second compartments, the two compartments Being connected by a wick or like porous member, but.otherwise sealed from each other, the wick or the like extending into the second compartment at least a part of the length thereof and the first compartment containing an indicating substance which liquifies, or undergoes a sharp reduction of viscosity at a temperature to be indicated or a little below. The envelope may be transparent and made of a thin thermoplastic sheet material. The indicating substance may be benzoic acid containing a dye and the wick may consist of a strip of filter paper running the whole length of the envelope, being retained by heat seals joining the top and bottom walls of the envelope and sealing off the envelope at the two ends. The indicator is unaffected until the temperature rises to about 120‹C. At this temperature the benzoic acid melts and begins to creep along the filter paper strip, the extent of the: creep being clearly visible due to the dye present. The device may be calibrated and an indicating mark provided along the length of the wick in the second compartment to indicate the maintainance of the temperature at 120‹C., or higher, for a certain period, say 30 minutes.
Patent GB-933235-A (GB)
Title: Production of propylene dimer
IPC: C07C2/18
Filed: 1959-12-10
Abstract: Propylene is dimerized at superatmospheric pressure in the presence of aqueous phosphoric acid and of added isopropyl alcohol.  In a continuous process isopropyl alcohol may be separated from the products and recycled.  Conditions may be 250 DEG -400 DEG C., 50-500 atmospheres, 0,1-5 hours, 5-58% phosphoric acid in about equimolar amounts with propylene or less and a molar ratio of propylene to isopropyl alcohol of 20-0,4.
Patent GB-919887-A (GB)
Title: Metal organoboron compounds
IPC: C07F5/02
Filed: 1959-12-11
Abstract: The invention comprises (1) alkali metal or alkaline earth metal hydrocarbon boron compounds complexed with an organic solvent capable of donating electrons, e.g. ethers and amines, such as sodium tetraethylboron complexed with the dimethyl ether of diethylene glycol, and (2) the preparation of alkali metal and alkaline earth metal hydrocarbon boron compounds by reacting an alkali or alkaline earth metal hydrocarbon boron hydride with an alpha-olefin in the presence of boron trihydrocarbon compounds or aluminium trihydrocarbon compounds as catalysts.  The reaction is preferably effected between 100 DEG  and 175 DEG C. and at a pressure between 500 and 5000 p.s.i.  The preferred reactants are alkali metal alkyl boron hydrides, such as sodium triethylborohydride, straight chain a -olefins of up to 6 carbon atoms, e.g., ethylene, and fully alkylated alkylboron compounds, especially triethyl borane.  Solvents which can be employed include hydrocarbons, ethers and amines.  The alkali or alkaline earth hydrocarbon boron hydrides may be made by reacting a hydride of an alkali metal having an atomic weight greater than 22 or an alkaline earth metal with a hydrocarbonboron compound in the presence of an ether or hydrocarbon.  When an ether is used, a reaction temperature between 25 and 200 DEG C. is preferred; with a hydrocarbon the preferred range is 50 to 150 DEG C.  Examples describe the reaction of sodium triethylborohydride with ethylene in the presence of triethylborane to form sodium tetraethylboron using as solvents the dimethyl ether or diethyl ether of diethylene glycol, tetrahydrofuran, the dimethyl ether of ethylene glycol, hexane or diethyl ether, the ethers resulting in etherate complexes; sodium triphenyl borohydride is reacted with ethylene using diamyl ether and triphenylborane to form the etherate of sodium triphenylethylboron; sodium tetracyclohexylboron complexed with triethylamine is obtained from sodium tricyclohexylborohydride and cyclohexene; sodium tetra-(2-phenylethyl)boron is obtained from sodium tri-2-phenylethylborohydride, styrene and triethylaluminium and the dimethyl ether of tetraethylene glycol may be included to yield the complex; sodium tetraoctylboron complex with pyridine is made from sodium trioctylborohydride, octene, pyridine and trioctylborane; calcium bis-(isobutyltriisopropylboron) is made from calcium bis(triisopropylborohydride), isobutylene, and triisopropyl borane in toluene; magnesium bis (tetraamylboron) is made from magnesium bis(triamylborohydride)pentene-1, triisopropylborane and xylene; sodium triethylborohydride is made from sodium hydride and triethylborane in hexane, diethyl ether or the dimethyl ether of diethylene glycol.
Patent GB-1280172-A (GB)
Title: Heat shrinkable fluorocarbon tubing
Inventor: ELY BERTEN E
IPC: B29C48/13
Filed: 1969-08-25
Abstract: 1280172 Extruding fluorocarbon heat shrinkable tubing PENNSYLVANIA FLUOROCARBON CO Inc 25 Aug 1969 42281/69 Heading B5A [Also in Divisions C3 and F2] Fluorocarbon heat shrinkable and heat sealable tubing, wherein the fluorocarbon is a copolymer of from 50-95% by weight of tetrafluoroethylene and from 5 to 50% by weight of hexafluoropropylene having a tensile strength of at least 4000 p.s.i., is made by melt extruding the copolymer as a tube at a controlled temperature and rate (see below), heating the tube to a temperature in the range 200-480 F. whilst expanding it against a surrounding mandrel by internal pressure and cooling the tube whilst expanding or when expanded. The polymer is extruded by means of a screw extruder in which the upstream barrel temperature is between 580 and 600 F., the downstream barrel temperature is between 560-580 F. and the rate of extrusion is related to the diameter of the screw as follows:- The heat shrinkable tubing so formed has ratios of expanded diameter to recovered diameter between 2À02-2À50, wall thicknesses in the range 0À015-0À060 inch and is preferably made transparent. The post-extrusion heating may be infra-red, hot air or hot liquid heating or as shown in Fig. 3, an electrical resistance heater 27. Mandrel 28 is preferably of glass and end 31 is closed by heat-sealing, pinching or alternatively by means of a plug. The internal pressure may be applied by gas, e.g. compressed air, nitrogen or carbon dioxide, by liquid, e.g oil or liquid metal, or mechanically by means of an expandable mandrel. The tubing is particularly intended for use as electrical insulation and because of the relatively high contraction on heating may be used on tapered objects, see Fig. 5 (not reproduced).
Patent GB-1021421-A (GB)
Title: Improvements in and relating to titanium dioxide pigments
Inventor: DURRANT GEORGE GEOFFREY
IPC: C09C1/00
Filed: 1960-12-08
Abstract: A coloured calcined titanium dioxide pigment containing 2 to 10% nickel oxide, 2 to 20% antimony trioxide and 2 to 20% aluminium oxide, the percentages being by weight.  The pigment may contain sodium and potassium sulphates and fluorides.  The titanium dioxide may have a particle size of 0.5 to 2.0 microns. The pigment may be prepared by drying the components and calcining them, preferably under oxidizing conditions, at 800 DEG  to 1200 DEG  C. The oxides may be formed in situ by incorporating salts (e.g. aluminium, nickel and antimony sulphates, antimony trichloride, and nickel nitrate) with the titanium dioxide prior to calcination.  In the example, antimony trioxide, nickel oxide and aluminium sulphate are added to an aqueous slurry of titanium dioxide.  The mixture is dried at 100 DEG  C. and then calcined at 1000 DEG  C.  The pigment may be incorporated into paints, synthetic plastic material and paper.ALSO:Paper has incorporated therein a coloured calcined titanium dioxide pigment containing 2 to 10% nickel oxide, 2 to 20% antimony trioxide and 2 to 20% aluminium oxide, the percentages being by weight.  The pigment may contain sodium and potassium sulphates and fluorides.  The titanium dioxide may have a particle size of 0.5 to 2.0 microns.  The pigment may be prepared by drying the components and calcining them, preferably under oxidising conditions, at 800 to 1200 DEG C.  The oxides may be formed in situ by incorporating salts (e.g. aluminium, nickel and antimony sulphates antimony trichloride, and nickel nitrate) with the titanium dioxide prior to calcination. In the example antimony trioxide, nickel oxide and aluminium sulphate are added to an aqueous slurry of titanium dioxide.  The mixture is dried at 100 DEG C and then calcined at 1000 DEG C.
Patent GB-1403957-A (GB)
Title: Use of gradient barrier in a secondary recovery operation to inhibit water coning
IPC: E21B43/32
Filed: 1973-09-11
Abstract: 1403957 Wells TEXACO DEVELOPMENT CORP 11 Sept 1973 [22 Dec 1972] 42669/73 Heading E1F In a method of producing formation fluids including hydrocarbons from a formation 11, water is injected through a well bore 13 extending through the formation of an aquifer 12 to create a bottom drive, and an extraneous fluid is injected adjacent the interface 16 between water and formation fluid to provide a gradient barrier 24. Thus rising of the interface in the region of the well bore, and passage of water to production perforations 15 is inhibited. The extraneous fluid may be butane, propane or recovered formation fluid, and may be thickened.
Patent GB-903190-A (GB)
Title: Process for the preparation of organosilicon compounds
IPC: C07F7/12
Filed: 1960-12-15
Abstract: Cyanoalkyl- and cyanoaryl-dihalosilanes of the formula NC-R-Si(R1)Y2 where R is a divalent hydrocarbon radical free from aliphatic unsaturation, R1 is a monovalent hydrocarbon radical and Y is chlorine or fluorine, are prepared by reacting a Grignard compound R1MgX where X is chlorine, bromine or iodine, with a cyanoalkyl- or cyanoaryl-trihalosilane NC-R-SiY3, in the presence of tetrahydrofuran at temperatures of -55 DEG  to 5 DEG C.  The radical R may be alkylene or arylene, and R1 may be alkyl, aryl or alkenyl groups. The examples describe the preparation of beta-cyanoethyl(methyl)-, -(ethyl)-, and -(phenyl)-dichlorosilanes.  Some monomethyl dichloro derivatives are also produced.  The reaction in diethyl ether is also described.
Patent GB-1017195-A (GB)
Title: Improvements in three-way buckets or skips on tractors
Inventor: HOUGHTON JOHN HENRY
IPC: E02F3/345
Filed: 1964-10-23
Abstract: 1,017,195. Load-handling machines. T. T. BOUGHTON & SONS Ltd. Oct. 23, 1964. No. 43232/64. Heading B8H. [Also in Division E1] In order that a skip may be tilted in three different ways relative to a vehicle on which it is supported there is pivotally mounted at the free ends of a pair of vertically swingable arms 25 supported on the vehicle a carriage 15 which can be swung about the pivotal axis of the skip between the arms and the carriage by a jack 30. Dependant upon the setting of a jack-actuated latch 36 supported on the carriage one end or the other of the skip is pivotally retained in one or the other of two pairs of pivot brackets 14 positioned on the cradle so that upon actuation of a jack 16 extending between the carriage and the middle of the upper edge of the skip, sideways swinging of the bucket occurs about the retained pivot pins 12 of the skip. Lugs 37 pass through slots 38 in the upstanding walls defining upwardly opening slots 13 in the brackets 14 to retain the pivot pins 12 of the skip in the slots as required.