baber/WOPTO huggingface dataset:
Patent GB-1287099-A (GB)
Title: Improvements in or relating to aircraft ground-wheel steering mechanisms
Inventor: SPALDING CYRIL
IPC: B64C25/50
Filed: 1968-12-13
Abstract: 1287099 Steering aircraft ground wheels HAWKER SIDDELEY DYNAMICS Ltd 15 Dec 1969 [13 Dec 1968] 59507/68 Heading B7H An aircraft ground wheel e.g. nosewheel, steering mechanism includes a rack-and-pinion assembly in which the pinion has around a minor portion of its periphery so that when the pinion 1 runs out of mesh with the rack 4 castoring is possible, provision being made to lock the rack in the position, in either direction of steering, at which it ceases to be in driving engagement with the pinion. As shown the rack 4, connected to power pistons 5, 5a is movable to the left or right by its engagement with teeth 11  of the rotatable pinion 1. At the position at which the rack and pinion run out of mesh during steering a recess 16 is provided in the rack housing. The rack is provided with a pair of detents 6, 6a co-operable with the recess to lock the rack at that position. The detents are biased by springs such as to oppose any tendency for them to enter the recess, pressure being exerted, to oppose this bias, during rotation of the pinion, by cut-aways 17 and a cam surface 19 on the pinion acting on the head of a detent as the rack moves. Once engaged in the recess, a detent is retained therein by the cam surface 19 until the pinion returns to re-engage with the rack. The rack is constructed in two halves bolted together. In modifications (not shown), the detents and co-operating cam are arranged away from the plane of rotation of the teeth 11 and the cam is separate from the gear, and the rack is a one-piece part.
Patent GB-1410310-A (GB)
Title: Process for the preparation of metal-free phthalocyanine
IPC: C09B47/30
Filed: 1973-12-27
Abstract: 1410310 Preparing metal free phthalocyanines CIBA-GEIGY AG 27 Dec 1973 [28 Dec 1972] 59771/73 Heading C4P Metal free phthalocyanines, e.g. the p-form are prepared by reacting 4 moles of phthalonitrile with 0À05 to 0À3 mole of anhydrous alkali metal sulphide in an inert organic solvent having a boiling point above 130‹ C. in presence of 0À5 to 3 equivalents of an alcohol having a boiling point above 130‹ C. at a temperature above 100‹ C. and the boiling point of the mixture of solvent and alcohol. The sulphides preferably have the formula A 2 S n  where A is Na, K or Li and n is 1-4. The inert organic solvents includes xylene, chlorobenzene, odichlorobenzene, 1,2,4-trichlorobenzene formamide and dimethylformamide and the alcohols used include n-octanol, ethylene glycol, propylene glycol and diethylene glycol. The products are used as pigments in synthetic resins and fibres and lacquers.
Patent GB-1326050-A (GB)
Title: Transfer device for metal plates
IPC: B65G57/00
Filed: 1970-12-17
Abstract: 1326050 Roller conveyers; packaging sheets MOELLER & NEUMANN GmbH 17 Dec 1970 [27 Dec 1969] 60013/70 Headings B8A and B8C For transferring plates from conveyer rollers 1 to a stacking box 26, arms 4 forming a carrier 5 have rollers 6 which engage rails 2 pivotable about a bearing 3 by cylinder devices 18 controlled by magnetic proximity switches 30. Rollers 7 of the carrier support the plates and the carrier is controlled by a power driven cable 14. From the position shown, a plate 12 slides over an inclined face 4a and engages a stop surface 24 of the stacking box 26. The carrier 5 is then retracted ready to engage a further plate on the conveyer 1 when the carrier 5 is moved to the upper position shown in broken lines. To achieve minimum spacing between the lower edges 4b of the arms 4 and the uppermost plate of the stack, the magnetic proximity switches 30 are used to control the extent to which the arms are lowered. In the event of failure of this control, rollers 56 engage the stack. Resilient drive members 9, 10 position plates 27, 29 which may be of other widths. In a modification, Fig. 3, the lowering of the carrier 5 is controlled by a photo-cell 60 and a light source 61. When a shield 62a attached to the arms 4 intercepts rays 62a further lowering of the arms is prevented.
Patent GB-1280631-A (GB)
Title: Adhesive materials
Inventor: SEYMOUR DONALD EDWIN
IPC: C09J7/26
Filed: 1968-07-09
Abstract: 1280631 Pressure-sensitive adhesive coatings T J SMITH & NEPHEW Ltd 8 July 1969 [9 July 1968 22 Oct 1968 20 Dec 1968] 32588/68 50045/68 and 60756/68 Heading B2E [Also in Division C3] A moisture vapour permeable pressure-sensitive adhesive material for use on animal skin and nails comprises a backing material having a pressure-sensitive adhesive on at least substantially the whole of the body adhering portion of at least one surface of the backing material, the backing material and adhesive being moisture vapour permeable and unaffected by water and at least one of the backing material and adhesive comprising a synthetic polymer and being continuous and non-permeable to liquid water, the adhesive material having a moisture vapour permeability of at least 300 g./s. metre/24 hours/40C./80% RH. Adhesives may be formed from polymers containing hydrophilic groups such as hydroxyl, carboxyl, amine, amide, ether and alkoxy providing that they are not soluble or highly swollen in water. Water-soluble or water-swellable polymers can be added to permeable pressure-sensitive adhesive formulations to increase their permeability provided they are compatible and do not cause the adhesives to be affected by water, for example a polyvinyl methylether may be added to a polyvinyl ethylether adhesive or a hydroxyl propyl acrylate homopolymer may be added to a compatible pressure-sensitive adhesive. Where a continuous adhesive is used it may be applied in solution, aqueous dispersion or as a hot melt by transfer, knife, roller or curtain coating methods. The adhesive may be made porous by foaming, leaching of soluble fillers, pattern spreading, spraying or selective layer perforating. Where the backing material is continuous it may be a film of a thermoplastic polyurethane or other polymers containing non-bound hydrophylic groups. A preferred backing material is a copolymer of a hydroxy alkyl acrylate or methacrylate with an alkoxy alkyl acrylate or methacrylate optionally with a minor amount of a further polymer. Suitable materials are listed as well as suitable copolymers of acrylic, methacrylic acids and derivatives of these. Where the backing material is not continuous any material having a high moisture vapour permeability may be used such as microporous films of plasticised polyvinyl chloride and non-woven, woven and knitted porous fabrics. The fabrics may be based on cellulose or synthetic polymer fibres which may be crimped and/or laid down so as to give an elastic fabric. Spun-bonded polyester fabrics are particularly suitable. The adhesive may be applied directly to the backing material or a water vapour permeable tie coat which may be continuous or discontinuous may be necessary. A suitable tie coat may be of nylon, or butadiene-vinyl pyridine. A protector may be provided to cover the adhesive prior to use. Alternatively, a release coat may be applied on the reverse side of the backing material.
Patent GB-1255330-A (GB)
Title: Biopsy instrument
Inventor: GRIFFITH LIONELL KEITH
IPC: A61B10/00
Filed: 1968-12-27
Abstract: 1,255,330. Biopsy instruments. BAXTER LABORATORIES Inc. 27 Dec., 1968, No. 61514/68. Heading A5R. A disposable biopsy instrument comprises a tubular sheath 13 Fig. 2 with an ovate bevelled front end defining a shearing edge 83, a needle 17 with a tissue-receiving pocket 81 in its side and having an ovate tissue piercing end 82, the needle 17 being reciprocable within the sheath 13 from a first limit position in which the pocket 81 is within the sheath and the end 82 external thereof to a second limit position in which the pocket 81 is external to the sheath, and constraining means on the sheath and needle to prevent relative rotation during reciprocation. A needle support 53, Fig. 4, has a slide 69 extending forsheath support 21 to prevent relative rotation. sheath support 21 to prevent relative potation, an abutment 71 in the path 33 preventing forward extension of the sheath 13 over an end part 79, Fig. 2, of needle 17 by engagement with an end part 77, Fig. 4 of the slide 69. In the second limit position end part 77 abuts against a front wall 35 of the support 21 and front parts 59 of side walls 57 of the support 53 abut against the rear of the sheath support 21. The sheath may be a press-fit or cemented into slots (45), Fig. 6 (not shown) in wall 35 and transverse walls (39), (41), (43) between parallel side walls 25 of the support. The needle may be press-fitted or cemented into slots in partitions 61, 63 of the support 53. A tubular cover may be engaged on a projection 47 of support 21 to protect the forward end sections of the needle and sheath in the second limit position. The supports 21 and 53 may be made from rigid plastics material.
Patent GB-1293909-A (GB)
Title: Halopyridine derivatives
Inventor: TOMLIN CLIVE DUDLEY SPENCER
IPC: C07D213/70
Filed: 1969-12-18
Abstract: 1293909 Pyridine derivatives IMPERIAL CHEMICAL INDUSTRIES Ltd 19 April 1971 [18 Dec 1969 (4)] 61691/69 61745/69 61746/69 61747/69 Heading C2C Novel compounds I (including salts thereof) where X<SP>1</SP> to X<SP>4</SP> are selected from H, halogen, alkoxy, NH 2 , alkyl- or aryl-amino, CO 2 H, carbalkoxy, OH, SH, NO 2  and optionally substituted hydrocarbon groups at least two of X<SP>1</SP> to X<SP>4</SP> being halogen, X is F, Cl, Br, O 2 F, O 2 Cl, O 2 Br, O 2 NR<SP>1</SP>R<SP>2</SP>, CN, NR<SP>1</SP>R<SP>2</SP> or CR<SP>1</SP>R<SP>2</SP>COR<SP>3</SP> where R<SP>1</SP>, R<SP>2</SP> and R<SP>3</SP> are H or an optionally substituted hydrocarbon group, or R<SP>1</SP> and R<SP>2</SP> are linked together via the adjacent carbon or nitrogen atom to comprise a carbocyclic or heterocyclic ring, are made by standard methods; compounds I can be sequentially converted one into the other, e.g. the sulphenyl halides (I) can be reacted with cyanides, R<SP>1</SP>R<SP>2</SP>NH or with CHR<SP>1</SP>R<SP>2</SP>COR<SP>3</SP>. Fungicidal, herbicidal and pesticidal compositions contain I as active ingredient. The usual forms for application are described.
Patent GB-1299194-A (GB)
Title: Heat-sensitive stencil sheets
IPC: B41N1/24
Filed: 1969-12-19
Abstract: 1299194 Heat-sensitive stencils RICOH K K 19 Dec 1969 [20 Dec 1968] 61983/69 Heading G2C A heat-sensitive stencil comprises a porous paper support, an adhesive layer and a layer of a thermoplastic resin, the adhesive and resin being capable of being perforated when heated up to 170‹C., and either the adhesive layer or a layer over the thermoplastic layer containing a compound or composition which gives a colour on heating up to the perforation temperature. Specified heat-sensitive compounds or compositions are (i) hexamethylenetetramine nickel or cobalt salts optionally mixed with sulphur and a polyhydric alcohol, (ii) sulphur, benzoin or polyhydric alcohol and a heavy metal salt, (iii) a sacclaride and or acid or alidic salt, (iv) heavy metal salts and an alkaline earth metal sulphide or a tetrathionate, a thiosulphate or a thiourea, (v) silver or mercury oxalate and a polyhydric alcohol or silver oleate or stearate and hydroquinone, spiroindene, protocatechnic acid, (vi) a heavy metal soap and a zinc di-alkyldithiocarbonate and (vii) resorcinol and one nitroso compound. A vinyl chloride vinylidene chloride copolymer is specified as the thermoplastic resin and the adhesive may be polyvinyl acetate, an acrylic resin or a vinylidene chloride/acrylontrile copolymer.
Patent GB-1298085-A (GB)
Title: Improvements in the production of foundry moulds
Inventor: MICHELON ROBERT
IPC: B22C1/08
Filed: 1969-12-29
Abstract: 1298085 Foundry moulds UCPI-SARL POUR L'UTILISATION DES CERAMIQUES ET DES PLATRES DANS L'INDUSTRIE 29 Dec 1969 [27 Dec 1968 2 Dec 1969] 63118/69 Heading B3F [Also in Divisions B5 and C3] A process for the production of a composite mould for metal casting having at least two parts comprises forming a plurality of patterns each conforming to the shape of a mould part, coating each pattern with a removable parting substance (wood, plaster, modelling paste), forming about each coated pattern a solidified mass 4 of refractory material bonded with a chemical binder, and progressively baking each refractory mass up to 900 C., separating each pattern from the refractory masses 4 and then from the parting substance, coating each pattern with a slurry of finely divided material and an inert binder to give a cavity surface layer 1, sanding the set coating producing a further layer 2, locating the baked refractory mass 4 in narrowly spaced relationship upon the coated pattern, pouring an intermediate slurry of refractory material and an inert binder therefor into the resulting narrow space and, after the binder has set to form a layer 3, assembling the resulting parts of said composite body, adhering said parts and progressively heating the resulting composite body to 800 C. The materials of each component layer are disclosed (see Division C3).
Patent GB-691187-A (GB)
Abstract: 691,187. Electrolytic production of benzoic acid sulphonimide. ERIENBACH, M., and SIEGLITZ, A. March 1, 1950 [Oct. 1, 1948], No. 6634/49. Class 41. A process for the manufacture of benzoic acid sulphonimide by electrolytic oxidation of orthotoluene sulphonamide in a solution or suspension with alkali-metal carbonate, comprises the use as anodes of metallic conductors which by an alkaline forming process have been coated with a layer of dense, firmly adhering, smooth, black lead peroxide. The conductors may be of lead or of another metal, for example, tin, iron, nickel, or a chromium-nickel-steel alloy. The conductor if of lead may be coated by electrolytic treatment as anode in an electrolyte consisting of sodium hydroxide solution. If the conductor is of a metal other than lead, lead ions are added to the electrolyte, for example by the addition of sodium or potassium plumbite, or lead acetate. The cathode may be of metal or carbon coated with a layer of lead sponge. Before the production of benzoic acid sulphonimide there is formed benzoic acid sulphonamide which may be uniformly withdrawn from the action of the current by circulating the electrolyte through a region where the current is not effective.
Patent GB-738343-A (GB)
Abstract: 738,343. Phase-sensitive circuits. FOXBORO CO. June 22, 1953 [June 28, 1952], No. 17302/53. Class 38 (4). [Also in Groups XXXVI, XXXVIII, XXXIX and XL (c)] The transistor amplified unbalance output of a 1000 c.p.s. A.C. automatically rebalanced measuring bridge is developed across secondaries 96, 98 of output transformers 85, 86 in series with a pair of half-wave rectifiers 100, 102 and two filter circuits comprising condensers 110, 112 shunted respectively by resistances 114, 116 in a phase detecting. circuit 84 to which a signal from oscillator 16 is applied between the junction of secondary windings 96, 98 and the junction of filter circuits 110, 114 and 112, 116 so that a unidirectional voltage appears across the outer ends of the filter circuits representing in amplitude and sense the magnitude and direction ofthe bridge unbalance, which energizes the series control windings 118, 120 of saturable core magnetic amplifier transformers 122, 124, connected in reverse sense. Secondary windings 126, 128 of transformer 122 are connected in similar sense in adjacent arms of a rectifier bridge 138, and secondaries 130, 132 are connected in similar sense in adjacent arms of rectifier bridge 140, the junctions of the .secondaries and the opposite junction of the associated rectifier bridge being respectively connected to a 60 c.p.s. A.C. supply while the remaining opposite bridge junctions are connected respectively to energize the windings of the reciprocating rebalance motor. At balance of the measuring bridge the transformers 122, 124 are substantially unmagnetised so that relatively small and equal current pulses flow on successive half-cycles of the mains supply but at unbalance in one sense the cores of the transformers are magnetised in opposite directions relatively to windings 126, 128 and 130, 132 respectively. Thus during successive mains half cycles, a large current pulse flows alternately in windings 126, 128, the rectifier bridge 138, while only a relatively Small pulse flows in windings 130, 132, and rectifier bridge 140. The current in windings 126, 128 further saturates the core of transformer 122 whereby the inductance is reduced and the current increased while the current in windings 130, 132 reduces the saturation of the core of transformer 124, increases the inductance, and further reduces the current. Bridge unbalance in the opposite sense correspondingly increases the current in windings 130, 132 while reducing that in windings 126, 128. The motor rebalances the measuring bridge and also drives indication recording, or control devices (not shown).
Patent GB-2003395-A (GB)
Title: A centrifuge
IPC: B04B3/06
Filed: 1978-08-30
Abstract: A strainer centrifuge drum rotates on a substantially horizontal mounting or drive shaft, which is supported at at least one end either by the centrifuge casing or the filtrate discharge duct.
Patent GB-2009254-A (GB)
Title: Hydrogen Permeation Resistant Phosphate Coatings
IPC: C23D5/02
Filed: 1978-10-13
Abstract: A method for reducing hydrogen diffusion through metal wherein the metal is coated with a phosphate- radical-containing, phosphate-glass- forming material on at least one surface thereof. The coating is then heated to at least 350 DEG C to form a phosphate glass. This method is especially applicable to nuclear reactors to minimize tritium diffusion. The coating is preferably formed with a solution of phosphoric acid which may also contain compounds such as MnSo4, SiO2 and Na2Cr2O7.
Patent GB-2034349-A (GB)
Title: Production of H2 and Co-containing gas stream
IPC: F02B43/10
Filed: 1978-11-10
Abstract: A hydrocarbonaceous fuel is partially oxidized in a gas generator (1) and the resulting gas stream containing CO and H2 is cleaned, cooled and divided into two parts. One part is burnt as fuel in combustor (82) of a gas turbine to produce flue gas which is passed through expansion turbine (83), which operates compressor (109). The other part is burnt in a pressurized heater (21) and preferably used to heat oxygen feed to generator (1). The oxygen feed to heater (21) is compressed by compressor (109). Preferably flue gas from the heater (21) is passed through the turbine (83). Preferably exhaust gas from turbine (83) is used to superheat steam which can be used as working fluid in a steam turbine (173) operating an electric generator (174) or in a steam turbine (169) operating a further oxygen compressor (140). <IMAGE>
Patent GB-2035761-A (GB)
Title: Improvements in processing of signals of complex waveform
IPC: G10L21/04
Filed: 1978-11-14
Abstract: A method and apparatus for modifying the frequency of a complex waveform comprises dividing the frequency spectrum of the signal, or at least a significant part of the said frequency spectrum, into a plurality of relatively narrow frequency bands, passing each, or at least some of, said frequency bands to corresponding frequency multiplying means, combining the outputs and then recording the modified signal at one speed and reproducing it at a slower speed to provide a reconstruction, or at least an approximate reconstruction, of the original signal at a different frequency.
Patent GB-2037479-A (GB)
Title: Internal voltage divider for television cathode ray tubes
IPC: H01J29/96
Filed: 1978-12-12
Abstract: An internal voltage divider for a television cathode ray tube provides one or more temperature-invariant voltages and comprises at least two series connected resistive sections having like temperature coefficients and resistive values of the same order of magnitude. The sections are so positioned to experience similar average variations of temperature pattern. The voltage divider is connected between a relatively high anode voltage and a terminal receiving a relatively low voltage through the base of the tube. Voltage tappings are made at the positions of the resistive sections. The ratios of the resistive values of the resistive sections, and thus of the voltage drops thereacross, do not change despite variations in temperature patterns.
Patent GB-784931-A (GB)
IPC: C04B37/02
Abstract: 784,931. Soldering and brazing. BIRMING- HAM SMALL ARMS CO., Ltd. July 29, 1953 [April 29, 1952; March 16, 1953], Nos. 10717/52 and 7149/53. Class 83 (4). In soldering or brazing a ceramic article to a metal, e.g. an aluminium oxide cutting tip to a metal shank, the ceramic is provided with a layer of cuprous oxide which is caused to adhere to the ceramic by heating or with a nickel bismuth alloy layer, which layer may be soldered or brazed or coated and brazed. The cuprous oxide is made to adhere to the ceramic by heating to 1300-1350 or 1400‹ C. in a vacuum or inert atmosphere, e.g. nitrogen. A coating of silver (2-10 per cent)-copper alloy is applied to the layered ceramic by heating to a similar temperature. Alternatively copper foil may be laid on the ceramic surface with a sheet of copper or silver copper alloy on top of it and firstly heating to 800‹ C. in air to oxidize the copper foil and then to 1200-1350‹ C. in inert gas, e.g. nitrogen, to melt the oxidized foil, the copper or silver copper alloy to coat the ceramic. The coated ceramic may be brazed to a metal with silver (2-10 per cent)-copper alloy. The alternative nickel bismuth coating alloy preferably contains 2-10 per cent bismuth.
Patent GB-785564-A (GB)
IPC: E02F3/407
Abstract: 785,564. Shovelling machines. MOSLEY, G. W. July 30, 1956 [July 29, 1955], No. 22042/55. Class 68(1) In a shovelling machine the means controlling the movement of a boom A about a pivot pin 4 mounted in a structure B on the chassis of the machine is such as to permit of the boom A swinging through a small angle in a vertical plane during the digging stroke to enable the shovel C to dig along a flat plane. In a preferred embodiment the means comprises a ram E connected to the boom A by a lost motion connection 5, 6, 7. In another embodiment the means is a ram in which the pressure on the side of the piston of said ram remote from the boom is released during the digging stroke. The shovel C is supported from the boom A by a parallel linkage D actuated by a ram F acting on a linkage 42, 44. The angle of the digging edge 28 of the shovel C to the horizontal can be adjusted by a ram G acting on members 16, 17, 18 to which link 21 of the linkage D is pivotally connected and which is rotatably mounted about the pivot pin 13 of the linkage D. A discharge plate 33, 34, 35 is pivotally mounted on the pin 15 of the linkage D and movement of said plate 33 relative to the shovel is controlled by a link 36 or a ram connected between the plate and the boom.
Patent GB-2039294-A (GB)
Title: Producing unsaturated hydrocarbons
IPC: C07C5/333
Filed: 1979-01-16
Abstract: A process for producing unsaturated hydrocarbons comprises contacting one or more paraffins, monoolefins and/or alkyl-aromatic compounds with a particulate supported dehydrogenation catalyst at a temperature of from 400 to 700 DEG C in the presence of an inert gas and/or steam. The catalyst used comprises a carrier having deposited thereon a molybdenum oxide constituting from 5 to 35% by weight of the catalyst. The carrier is a porous crystalline silica modified by the inclusion of from 1 to 20% by weight of magnesia, a magnesia-titania carrier consisting of 50 to 95% by weight of MgO and 50 to 5% by weight of TiO2, or a magnesia- alumina carrier consisting of 70 to 95% by weight of MgO and 5 to 30% by weight of Al2O3. The catalyst is regenerated when required by contacting it with an oxygen-containing gas at a temperature of from 400 to 700 DEG C. Use of such catalysts provides a high selectivity in dehydrogenation reactions; substantially simplifies temperature control in the reaction zone; avoids the possibility of formation of a hazardous mixture of hydrocarbons with oxygen; and simplifies purification of waste waters formed in the process.