baber/WOPTO huggingface dataset:
Patent GB-294584-A (GB)
Title: Improvements in process and apparatus for the preparation of agglomerated solid carbon dioxide
IPC: C01B32/55
Filed: 1928-07-26
Abstract: 294,584. Hessling, W. July 27, 1927, [Convention date]. Hopper and plunger machines.-Carbon dioxide snow is compacted by a reciprocating pressure member 8 which continuously compresses the dioxide in a duct 9 open at each end, but having a restriction adapted to increase the density of the snow. The snow is formed by the expansion of liquid supplied through the pipe 1 into a chamber 3, and falls in front of the plunger on the back stroke. The duct is of Venturi shape. A further compression may be given to the solid by apparatus shown in Fig. 2, in which solid formed by the plunger 14 is disintegrated by toothed rollers 18, 19 in a low pressure chamber 17 and fed to a second plunger 23. The duct for this plunger is in two parts adjusted by a set screw 27. The outlet may have several small apertures, Fig. 3, enabling rods of ice to be formed.
Patent GB-1000462-A (GB)
Title: Improvements in or relating to mineral insulated thermocouple cables
Inventor: SORSKY GIDEON
IPC: H01B3/02
Filed: 1963-05-30
Abstract: 1,000,462. Thermocouples. BRITISH INSULATED CALLENDER'S CABLES Ltd. May 29, 1964 [May 30, 1963], No. 21741/63. Heading H1K. In a method of insulating the hot junction of a mineral-insulated thermocouple cable formed by jointing together the ends of a pair of dissimilar conductors protruding from a cut-back end of the cable, a preformed body of inorganic insulating material is placed over the junction and enclosed in a metal hood which is secured to the cable sheath. As shown, the end of the cable is cutback, the conductors 1, 1<SP>1</SP> dissimilar metals are jointed to form a hot junction 4, a preformed cylindrical cap 7 of magnesium oxide is placed over junction 4, and a metal hood 5 is secured to the metal cable sheath 2 by a welded seam 6. Cap 7 may be formed in two parts comprising a ring which fits round junction 4 and a flat disc which is placed on top of the ring. Alternatively a slightly longer tubular body may be used by itself to insulate the junction. The cap may be of aluminium oxide instead of magnesium oxide and the metal hood may also be joined to the cable sheath by brazing or crimping
Patent GB-1129640-A (GB)
Title: Novel copolyamides and process
IPC: C08G69/26
Filed: 1966-05-17
Abstract: 1,129,640. Copolyamides. MONSANTO CO. 17 May, 1966 [24 May, 1965], No. 21809/66. Heading C3R. Linear fibre-forming copolyamides are composed (A) 1 to 99 mole per cent units -CO- (CH 2 ) m -CO-NH-(CH 2 ) n -NH or -CO- (CH 2 ) x -NH-, where m and n are integers of at least 2 and x is at least 4, and (B) 99 to 1 mole per cent units from 5-t.-butylisophthalic acid and hexamethylene diamine or 50 to 1 mole per cent of units from said acid and 1,4-cyclohexane-bis-methylamine.
Patent GB-1155657-A (GB)
Title: Dimerisation of Olefines
Inventor: SMITH EDGAR THOMAS
IPC: C07C2/22
Filed: 1967-05-11
Abstract: 1,155,657. Dimerizing olefins. IMPERIAL CHEMICAL INDUSTRIES Ltd. 6 May, 1968 [11 May, 1967], No. 21878/67. Heading C5E. A process for the dimerization of olefins comprises bringing at least one olefin into contact with a catalyst comprising a nickel compound on a support in the presence of an amount of a compound containing an acidic hydrogen atom in the range of 0À05-50 p.p.m. by wt. of the olefin. The compound containing the acidic hydrogen may be an inorganic acid, e.g. HCl or a compound containing an OH or SH group, e.g. water or a lower aliphatic alcohol. The catalyst may comprise NiO, NiCl 2  or NiSO 4  on a support of one or more of SiO 2 , Al 2 O 3 , ZrO 2 , B 2 O 3 , TiO 2  or MgO. Olefins such as ethylene, propylene and butanes may be dimerized or co-dimerized preferably in the presence of a liquid phase at a temperature up to 140‹ C. Examples describe the liquid phase dimerization of propylene in the presence of a NiO/SiO 2 -Al 2 O 3  catalyst and varying amounts of water.
Patent GB-602616-A (GB)
Title: Improvements in or relating to apparatus for testing gear mechanisms
IPC: G01M13/02
Filed: 1945-08-27
Abstract: 602,616. Circumferentially-adjustable couplings. BROWN & SONS (HUDDERSFIELD), Ltd., D., and BALMFORTH, N. Aug. 27, 1945, No. 21889. [Class 80 (ii)] [Also in Group XIX] Apparatus for circumferentially-adjusting a coupling between two shafts to apply a torque to gear mechanism under test, is characterised in that, to each of the axially-aligned output shafts a, b of the two mechanisms (not shown) to be tested, there is attached a spur-wheel a<1>, b<1> which meshes with an intermediate wheel formed in or carried by an intermediate member d, e, the outer peripheries of the two intermediate members being formed or provided respectively one with right- or left-hand helical teeth and the other with spur teeth which mesh with internal wheels carried by or formed in outer members f, g which are connected to rotate together and are supported on the output shafts , of the two mechanisms, the outer members f, g being so fashioned that between them and the outer ends of the respective intermediate members d, e there are provided spaces h, i which constitute cylinders in which the intermediate members work as pistons and provision being made for the admission of oil under pressure to one or other of the cylinders. The oil is introduced through a passage f<3>, g<3> in the hub of the outer member f, g and endthrust pads or bearings p, r are positioned between the outer members and a stationary housing.
Patent GB-1434502-A (GB)
Title: Expandable thermoplastic styrene-based polymeric compositions
IPC: C08J9/16
Filed: 1974-05-17
Abstract: 1434502 Coated expandable styrene polymer particles MONTEDISON SpA 17 May 1974 [21 May 1973] 22005/74 Heading C3C [Also in Division B2] Coated expandable fine particles of average diameter 0À1-5 mm. comprise 100 parts by wt. of a styrene polymer containing at least 50% by wt. of chemically combined styrene, 2-20 parts by wt. of at least one expanding agent and 0À005-1 part by wt. of at least one polyether derived from propylene oxide and/or the glycol thereof and optionally also from ethylene oxide and/or the glycol thereof and from up to 10% by wt. of the polyether of at least one polyhydroxy compound at least a portion of the polyether being uniformly dispersed on the surface of the particles. The coated particles may be made by polymerizing styrene in aqueous suspension to produce the fine polymer particles, mixing the expanding agent with the polymer during or after the polymerization, separating, drying and screening the particles which are then mixed with the polyether. In the examples particles of polystyrene containing a mixture of n- and isopentane were prepared and mixed with polyethers derived from propylene oxide and also ethylene oxide and/or glycerol and optionally zinc stearate or silica as non-agglomerating agents: the particles were then pre-expanded with steam, aged and moulded into a block with steam.
Patent GB-614617-A (GB)
Title: Improvements in electric tumbler switches
IPC: H01H23/16
Filed: 1946-07-24
Abstract: 614,617. Tumbler switches. ARNOLD, C. L., DOWSETT, R. W., DUFFIELD, J. F., and M. K. ELECTRIC, Ltd. July 24, 1946, No. 22096. [Class 38 (v)] The toggle link 14 of a dead-centre tumbler switch is pivoted to the dolly 1 at 15, passes through an aperture, e.g. a tubular rivet securing a contact, Fig. 2, in the base of a U-shaped, pivoted, contact-carrying member 9 and carries a spring 17 in compression between its free end and the member 9. Outwardly turned lugs on the member 9 pivot in notches in lugs bent down from the bridge 5. Horns 16 on the dolly or horns 16a on the link 14, Fig. 4, afford positive actuation by direct engagement with the link or the dolly after initial movement of the dolly. Projections 9a on the member 9 co-operate with the dolly pivot 2 to limit the travel of the contact 10. Specification 407,476 is referred to.
Patent GB-1129449-A (GB)
Title: Housings for electrical components
IPC: B21D35/00
Filed: 1967-05-12
Abstract: 1,129,449. Soldering; making cases for electrical components. INTERNATIONAL STANDARD ELECTRIC CORP. 12 May, 1967 [18 May, 1966], No. 22156/67. Headings B3A and B3R. An electrical component 4, Fig. 3, is housed in an aluminium casing 1, and a lead 5 from the component is soldered to a copper coating 2 on the casing, at 6. An aluminium sheet is coated with copper, is drawn into a cup shape, and is then simultaneously pierced and formed with a projection 3, by a punch and die 10, 15, Fig. 4. The punch has a piercing portion 9, and a spring-urged sleeve 11 which engages the rim of casing 1 during the piercing operation so as to assist withdrawal of the punch.
Patent GB-974782-A (GB)
Title: Miniature electric motors
IPC: H02K1/17
Filed: 1962-11-06
Abstract: 974,782. Electric motors. LOUIS MARX & CO. Ltd. Nov. 6, 1962 [Nov. 6, 1961], No. 22334/64. Divided out of 974,781. Heading H2A. The subject-matter of this Specification is identical with that described in Specification 974,781 but the claims are concerned with the housing and brushgear.
Patent GB-1097689-A (GB)
Title: Improvements in or relating to gas chromatography detectors
IPC: G01N30/64
Filed: 1965-05-26
Abstract: 1,097,689. Gas chromatography. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. May 26, 1965 [May 29, 1964], No.22359/65. Heading G1N. In a gas chromatography apparatus, in order to allow for the fact that components of a gas mixture being analyzed are more spread out in a carrier gas the slower they pass through a column 1, and the respective signal peaks, produced by for example a flame ionization chamber 2, 3 across R5, become wider and the signal amplitude smaller, the time constant of a circuit C7, R8 is continuously adjusted during a chromatographic cycle and the output of said circuit is fed to a display unit 9. The resistor R8 is arranged to have a minimum value (e.g. 100 ohms) at the cycle commencement increasing (e.g. to 10 K ohms) as the cycle proceeds thus increasing the circuit time constant. The resistor R8 slider is moved by a motor 10 the speed of which is set so that the speed of movement of the slider is matched to the speed of the gas flow through the column 1. The motor is switched on by bridging leads 21, 22 with a plunger 18 of a syringe as the plunger is moved to inject a gas sample into an inert carrier gas flow from a passage 15. In the embodiment described the detector is a flame ionization chamber, having an electrode 3 and burner 2 connected in series with the resistor R5 and the flame across a 100V. source 4, to which chamber combustible gases are fed from a passage 16. The voltage across R5 is proportional to the instantaneous concentration of a gas component in the burner which produces a greater ion concentration in the flame. Alternatively the detector may be a catherometer type or a type operating with a radio-active source.
Patent GB-1507710-A (GB)
Title: Tio2 pigment coated with porous alumina/silica and dense silica
IPC: C09C1/00
Filed: 1975-05-22
Abstract: 1507710 Coated TiO 2  E I DU PONT DE NEMOURS & CO 22 May 1975 [30 May 1974] 22361/75 Heading C1N A coated TiO 2  pigment comprises a core of pigmentary TiO 2 , a porous inner coating of SiO 2  and Al 2 O 3  containing less than 12% by weight SiO 2  and less than 11% by weight Al 2 O 3  and a dense outer coating of SiO 2  in an amount between 2-17% by weight. A further porous outer coating of Al 2 O 3  may be present in an amount between 0À5 and 5% by weight. The pigment may be made by (1) adding to an aqueous slurry of pigmentary TiO 2 , maintained below pH 7À5 an aqueous solution of soluble silicate, (2) adding to an aqueous slurry of pigmentary of TiO 2  maintained at pH 6-10 an aqueous solution of soluble aluminate, (steps (1) and (2) being in either order or simultaneously carried out) thereafter (3) adjusting the pH of the slurry to 9-10, (4) adding to the slurry an aqueous solution of soluble silicate and (5) slowly adding dilute acid to the slurry until the pH is 6-7À7. An aqueous solution of a soluble aluminate may be added to the slurry in a further step while maintaining the pH at 3-8.
Patent GB-1420832-A (GB)
Title: Hydraulic system for nuclear reactors with hadryulically driven control rods
IPC: F15B11/00
Filed: 1973-05-10
Abstract: 1420832 Controlling reactors COMBUSTION ENG Inc 10 May 1973 [11 May 1972] 22381/73 Heading G6C In a control system for hydraulically driven control rods of a nuclear reactor, e.g. a pressurized water reactor, hydraulic lines 78 from a plurality of control rod assemblies (not shown) are grouped together and exit through a nozzle 68 in the reactor vessel head 14. Each hydraulic line 78 is connected to a separate valve 44 and these valves are connected to a common return line 46 which, in the embodiment shown, extends back down through the nozzle 68 and into the reactor vessel. A plurality of these common return lines 46 are connected to a manifold 70 from which an exit conduit 72 leaves the reactor vessel through another nozzle 74 in the reactor vessel head 14. The exit conduit 72 is connected via an hydraulic line 50 with a lift pump (not shown) which provides the differential pressure for raising the control rods. Differential pressure transducers 56 are also included which provide a means for indicating control rod position. Disconnects, e.g. 76, are provided so that the reactor vessel head 14 may be readily removed and so that valve and transducer coils may be readily replaced.
Patent GB-1138525-A (GB)
Title: Improvements relating to under-water mooring ropes
IPC: B63B21/20
Filed: 1965-05-26
Abstract: 1,138,525. Mooring rope. W. KOHRING. 19 July, 1966 [26 May, 1965], No. 22429/65. Heading B7S. [Also in Division D1] A mooring rope comprises a stranded core 1, a series of weighting members 10, 11, disposed along the core, and a flexible tubular liquid impervious sheath 12 surrounding the weighting members and the core. The core 1 is secured at each end to a shackle 4 which is secured in liquid tight manner to the end of the sheath. The space within the sheath is filled with a lubricant having a specific gravity greater than 1.
Patent GB-1503207-A (GB)
Title: Disposable absorbent articles
IPC: A61F13/511
Filed: 1975-05-23
Abstract: 1503207 Laminated absorbent sheet material UNION CARBIDE CORP 23 May 1975 [18 June 1974] 22481/75 Heading B5N A disposable absorbent article, e.g. a disposable diaper or incontinence pad comprises a hydrophobic liquid-permeable top sheet and a liquid impermeable back sheet having therebetween a hydrophilic water-insoluble film containing slits of length 1/16-# inch, preferably #-5/16 inch, whereby liquid contacting the film causes it to swell and the slits to open to permit passage of liquid therethrough. The film may be polyvinyl pyrrolidone, polyacrylic acid and/or irradiated polyethylene oxide, of thickness 0À5-2À0 mils. The top sheet may be an open cell foam, woven or non-woven fibrous material, gauze, or slitted ethylene-ethyl acrylate copolymer film. The back sheet may be olefinic or vinyl material, e.g. embossed polyethylene of thickness 0À4-1À5 mils. Further absorbent layers of cellulosic tissue, non-woven wood fluff or polymeric material may be present on one or both sides of the film. The top and back sheets may be heat- or adhesive-sealed together so as to enclose the slit film.
Patent GB-1472185-A (GB)
Title: Liquid detectors
IPC: G01F23/292
Filed: 1974-05-21
Abstract: 1472185 Liquid detector; bubble density measurement HECTRONIC AG 21 May 1974 [22 May 1973] 22512/74 Heading G1A Apparatus for detecting the presence of a liquid medium comprises a light source 4, a photoelectric detector 14 and at least one member 3 pervious to light rays, the arrangement being such that, in the absence of liquid, light from the source reaches the detector via path 9 passing outside pervious member 3 and in the presence of liquid, light does not reach the detector (path 9a). Preferably the detector is also associated with a light pervious member 13. As described, source 4 is a LED and detector 14a phototransistor. The pervious member has a refractive index of about 1À5, may be inorganic or organic glass, (e.g. acrylic), and may be of spherical or cylindrical section. Opaque sheet 22 prevents direct transmission between source and detector. The system only operates correctly when the liquid is bubble free as bubbles reflect, refract or diffract light, that would otherwise miss the detector to the detector and produce output pulses. A rough measure of bubble concentration can be determined from the frequency of these pulses. In an alternative embodiment, the source is placed behind a block of the light pervious material in one face of the vessel for the liquid and the detector is placed behind a sheet of glass in an adjacent face.
Patent GB-733084-A (GB)
Title: Compressible liquid spring devices
Inventor: WALES GEORGE F
IPC: F16F5/00
Filed: 1952-09-08
Abstract: 733,084. Liquid springs. WALES-STRIPPIT CORPORATION. Sept. 8, 1952, No. 22521/52. Class 108 (3). A liquid spring comprises supplemental piston means in the form of a displacement member 29, and a threaded element 31, for adjusting the position of the member 29, for preloading the liquid of the spring. Further preload adjustment may be obtained by altering the position of a threaded cap 21 upon which bears the load-applying plunger 16, of the spring. Nylon sealing rings are provided at 20, 22 and 30. The ring 22 has an arcuate end surface (Fig. 5) on which a further seal ring 25 is compressed by a threaded ring 26. The periphery of the flange of the ring 26 is slightly spaced from the wall of the cylinder 12. Pressure causes this wall to be pressed on to the piston to augment the action of the seal rings 22, 25 as described in Specification 721,399.
Patent GB-518668-A (GB)
Title: Improvements in machines for separating and cleaning grain and other granular or pulverulent materials
IPC: B07B13/00
Filed: 1938-07-29
Abstract: 518,668. Sifting-apparatus. MARSTON, C. C. July 29, 1938, No. 22583. [Classes 82 (ii) and 117] Apparatus for the separation of grain &c. comprises two perforate cylinders 1 disposed side by side and rotated in opposite directions so that their adjacent sides, forming a trough 4, are moving upwardly. Alternatively, the trough may be formed by the adjacent runs of two endless perforated bands. The material to be separated is fed into the trough and the finer sizes pass into and through the cylinders into a discharge shoot 6. The oversize materials remain in the trough and work their way to one or both ends where they are discharged. The cylinders may contact one another lightly or may be slightly spaced to form a gap which takes part in the sifting operation. The trough between the cylinders may constitute a continuation of a feed hopper, the bottom edges of which may carry brushes to retain the material and keep the cylinders clean. The apparatus may be enclosed in a box 8 through which an aspirating air current is drawn, and the trough may have an arch-shaped shield 10, which may be perforated and may be formed in sections. Where the cylinders are spaced apart the gap may be of different widths along its length and may be automatically and periodically varied by mounting the cylinders eccentrically. Water or other liquid may be used in conjunction with the operation of the machine such as by spraying or by immersion of one or both cylinders partly or wholly therein.
Patent GB-653879-A (GB)
Title: Improvements in or relating to the production of fluoro- and fluorochloro carbons
IPC: C07C17/007
Filed: 1948-08-27
Abstract: Fluorocarbons and/or fluorochlorocarbons are made by reacting on carbon jointly with fluorine and chlorine at above 350 DEG  C. Amongst the products of reaction there are specified tetrafluorochloroethane and tetrafluorodichloroethane together with compounds such as hydrogen fluoride, carbon dioxide and silicon tetrafluoride.  The reactive gases may be derived from a mixture of these gases or a compound thereof, e.g. chlorine mono- or tri-fluoride, or from mixtures of such compounds with themselves or with chlorine or fluorine.  The carbon may be in the form of graphite or wood charcoal.  Reactor temperatures of 500-550 DEG  C. are given and the gases may be preheated.  Ratios of fluorine to chlorine may be widely varied, e.g. 1 : 3 to 3 : 1 ratios are quoted, and where large proportions of chlorine are used only small amounts of tetrafluoromethane are obtained.  The reactor should be made of material such as recrystalline alumina or a metal such as nickel which is resistant to reactants and products.  The gases may be passed through a bed of carbon or a fluidized technique may be used. In examples: (1) fluorine and chlorine in mol. ratio of 0.9 : 1 are passed through Acheson graphite at 500 DEG  C. in a stream of nitrogen products being collected in a catch-pot at 5-10 DEG  C. and then in traps immersed in liquid air, the pot providing a brown resinous material, possibly a polynuclear aromatic fluorocarbon, and the traps yielding on fractionation after scrubbing with caustic soda solution the above specified compounds, mainly trifluorochloromethane and tetrafluorodichloroethane, and some heptafluorochloropropane; (2) fluorine and chlorine in a mol. ratio of 1.8 : 1 are passed through wood charcoal at 500 DEG  C. in a stream of nitrogen and products isolated as in (1) save that HF is removed before the traps by NaF treatment, trifluorochloromethane and tetrafluoromethane are the chief products, and in (3) chlorine trifluoride diluted in a ratio of 1 : 3 with nitrogen is passed through artificial graphite at 500 DEG C. and products are isolated as before excess chlorine trifluoride and its derivatives being removed by scrubbing with sodium hydroxide and sulphite, the main products being trifluorochloromethane and carbon tetrafluoride.
Patent GB-1463886-A (GB)
Title: Processes for fabricating monolithic optoelectronic semicon ductor devices
IPC: H01L33/20
Filed: 1974-05-22
Abstract: 1463886 Electroluminescence HUGHES AIRCRAFT CO 22 May 1974 [29 June 1973] 22798/74 Heading C4S [Also in Division H1] In the manufacture of a monolithic optoelectronic device ions are implanted into one region of a semiconductor substrate to produce a PN junction at least part of which is to form a radiation emitting element and then protons are implanted adjacent this element to form a semi-insulating waveguide coupling region extending from it. Three-terminal isolators may be formed in a 0À01 ohm. cm. N typeGaAs wafer by ion-implanting zinc through oxide masking to form a PN junction. After annealing at 900 C. for 3 hours while the wafer is coated with a fresh oxide layer, proton bombardment through a gold or tungsten mask formed on the oxide produces a semi-insulating region either bounding the junction, which acts as a light emitter, or dividing it into inner light emitting and outer light detecting parts. In the latter case after annealing at 500-600 C. for an hour, removal of masking, and reoxidizing, one of various specified alloys are deposited and alloyed to provide the emitter and detector with individual ohmic top contacts and a common bottom contact. In the former case the individual ohmic detector contact is replaced by an evaporated aluminium or layered titanium-tungsten-gold Schottky contact formed in a subsequent operation. GaP and GaAsP are alternative wafer materials. To form a four terminal isolator the wafer is replaced by a sulphur implanted region in one face of a Cr-doped high resistivity GaAs substrate. The processing is similar except that the zinc implanted region is annular and the common contact is replaced by individual top contacts within and outside the annular region, which is divided by the proton-bombarded region, which extends into the substrate. Modifications suggested are complementary structures based on P type material, linear strip-form emitter and detector junctions, the arrangement of several detectors around a central emitter, division of the structures into emitter-waveguide and detector portions for matching with other detector and emitter-waveguide structures and use of other specified dopants in place of zinc and sulphur. P-type dopants Cd, Be, Mg and N-type dopants Se, S, Te, Si, Sn are exemplified.