baber/WOPTO huggingface dataset:
Patent GB-301896-A (GB)
IPC: B02C13/288
Filed: 1928-11-12
Abstract: 301,896. B³hler, Geb. Dec. 9, 1927, [Convention date]. Impact pulverizers. - In a disintegrator air slots 7 are provided, for instance in the cover 2 outside of the sieve 5 confining the lower part of the space containing the heaters 4, through which pass air currents induced by the fan which extracts the ground material from the mill, sn as to remove any accumulation 6 of ground material between the base 1 and sieve 5.
Patent GB-1480828-A (GB)
Title: Ambulances
IPC: B60H3/06
Filed: 1974-07-26
Abstract: 1480828 Ventilating an ambulance; cooling I.C. engines BINZ & CO 26 July 1974 [30 July 1973] 33090/74 Heading F4U and F4V In an ambulance which comprises a patient's compartment 14 isolated from a driver's cab 28, air is extracted from the patient's compartment and sterilized. The extracted air is fed through pipes 29 and 18 by a fan 30 to a combustion unit 11 where it is burned together with fuel. The combustion unit 11 is connected to the coolant circuit 15 of the ambulance's internal combustion engine 12, the coolant being water. Thereby, overheating of the unit 11 can be prevented, unwanted heat from the unit 11 being dissipated by the engine's radiator 22 which is cooled by a thermostatically controlled fan 21. The combustion unit 11 can supply hot water to heating devices (not shown) in the cab 28 and compartment 14. These devices can be disconnected in a manner not shown. When the unit 11 is required to heat the coolant but not required to burn the air from the compartment 14, a valve flap 32, which is controlled in the cab at 17, can shut off air from the compartment 14, exterior air then being supplied to the unit 11 through an orifice 34. The operation of the combustion unit 11 is normally controlled by an automatic cut out 13 which responds to the temperature of the coolant circuit. However the cut out is prevented from operating when the valve flap 32 puts the compartment 14 in communication with the heater unit. Prevention is by means of a switch 20 operated by movement of the valve flap 32. Reduced pressure within compartment 14 causes air to enter through a non-return valve 24. In a simplified embodiment, the air supply line 18, which includes fan 30, is connected directly to the inlet manifold of the engine 12. The unit 11 and cut-out 13 are then not needed.
Patent GB-1049053-A (GB)
Title: Dimercapto triazoles
Inventor: WHITEAR BRIAN RONALD DAVID
IPC: C07D249/12
Filed: 1964-08-14
Abstract: A process for the preparation of 3.5-dimercapto-1,2,4-triazole of the following tautomeric formulae <FORM:1049053/C2/1> wherein R represents H, alkyl, alkenyl, aralkyl or aryl comprises heating a hydrazodithiodicarbonamide of the formula <FORM:1049053/C2/2> wherein R is defined as above and R1 is H or C1- 6 alkyl or alkenyl, with an aqueous solution of a group IB metal hydroxide using between 1-6 equivalents of hydroxide per mole of hydrazodithiodicarbonamide, the strength of the solution being 0.2-2.0 N hydroxide, or by heating with an aqueous solution of a strong organic base.  The dimercapto triazoles are claimed per se when R is alkyl or aralkyl.  In preferred embodiments of the invention, 2-3 equivalent of hydroxide are used at 0.5-1.0 N strength, with a reaction time of 24 hours heating under reflux.  When R in the product is to be H or C1- 6 alkyl, then the groups R and R1 in the starting material are preferably the same. 3 - Amino - 5 - mercaptotriazoles are produced as a by-product in this reaction, for example 3 - amino - 5 - mercapto - 1,2,4 - triazole.  The desired product is recovered by recrystallization from water, or by dissolution in Na2CO3 solution, followed by solvent extraction of the aforementioned by-product, and finally liberation of the required 3,5-dimercaptotriazole by acidification.
Patent GB-1513828-A (GB)
Title: Variable gain amplifiers
IPC: H03G7/06
Filed: 1975-08-12
Abstract: 1513828 Compandors WESTERN ELECTRIC CO Inc 12 Aug 1975 [14 Aug 1974] 33482/75 Heading H4R In a variable gain amplifier, particularly for use as a compressor or expander in a compandor system, a first differential amplifier 202, Fig. 2, applies an input signal to an operational amplifier 201 having a second differential amplifier 204 in its feedback path. For use as a compressor the gain of the first differential amplifier is maintained constant while the gain of the second differential amplifier is controlled by the rectified output signal of amplifier 201, for use as an expander the gain of differential amplifier 204 is made constant and the gain of differential amplifier 202 is made proportional to the rectified input signal V IN . As described, Figs. 6 and 7 (not shown) the operational amplifier and differential amplifiers are integrated circuits, with D.C. stabilization provided by D.C. feedback around the operational amplifier, while the differential amplifiers are emitter coupled transistor pairs with controllable current sources in their common emitter connections.
Patent GB-1044468-A (GB)
Title: Improvements in or relating to switched sockets
Inventor: JOHAN KONIJNENBERG
IPC: H01P1/12
Filed: 1963-08-26
Abstract: 1,044,468. Two part couplings combined with switches; snap-action switches. PHILIPS ELECTRONIC AND ASSOCIATED INDUSTRIES Ltd. Aug. 26, 1963 [Aug. 29, 1962], No. 33692/63. Headings H2B and H2E. A socket and switch construction comprises a coaxial socket connector 13, 15, Fig. 1, on the outer member 15 of which is coaxially and rotatably mounted a substantially disc-shaped switching member 31. The insulating disc member 31 has a flat switching contact 33 mounted upon it which can break or establish contact between two resilient contact strips 35, 37 mounted on the supporting plate 1, which may be of hard paper. A spring 51, operating with an over-centre action, keeps the member 31 in either of the two positions, a projection 55 on the member 31 acting as a knob for rotating the latter. The central contact 13 of the coaxial connector has a collar 17 and a flange 19 (Fig. 2, not shown), between which are clamped an insulating ring 21 and an insulating carrier plate 7, these being separated by the flanged end of the sleeve contact 15. The contact 13 has a soldering tag 29 and is connected through strip 27 to a connecting strip 57, via an eyelet 9. The sleeve 15 is connected through strip 25 to strip 61 which may also act as a soldering tag. The construction may form part of a battery-operated dry-shaver.
Patent GB-977759-A (GB)
Title: Improved cable gland adaptor
IPC: H02G3/06
Filed: 1962-09-04
Abstract: 977,759. Couplings. G. M. PRATLEY. Sept. 4, 1962 [Sept. 8, 1961], No. 33901/62. Heading H2E. An adaptor for attaching a paper insulated cable to a cable box comprises a metal tube 11 having cuts 12, locating screws 21, flange 13, a thrust ring 15 and externally threaded nut 14, together with an internally threaded socket 17. The end of the cable is prepared by stripping it down to the lead sheath, unwinding, cleaning and tinning the steel ribbon armouring, then rewinding it directly on to the lead armour. The prepared cable end is threaded into tube 11 from the end of the tube adjacent to cuts 12, this end being squeezed in to grip the armouring, the part of the cable covered with the tinned steel ribbon is centred by screws 21 and molten lead is poured into the space between the steel ribbon, lead armour and tinned internal surface of tube 11 to seal the cable in tube 11 in a waterproof manner. Spigot 22 on socket 17 is threaded into a socket on a cable bore and flange 13 clamped against resilient washer 19 on shoulder 20 in socket 17 by nut 14, washer 19 making the joint waterproof.
Patent GB-342765-A (GB)
Title: Improvements in processes for reproduing imitation wood graining, marbling or like markings on surfaces
IPC: B41M3/06
Filed: 1929-11-07
Abstract: 342,765. Printing. LANGDON, F. E., 39, East Drive, Carshalton, Surrey. Nov. 7, 1929, No. 33944. [Class 100 (ii).] Printing processes ; printing- surfaces. - Wood graining, marbling, or other surf a c e markings are reproduced by employing an original comprising two or more sheets of material applied together end to end, each sheet being formed with the design at the front end matching the design at the rear end of the sheet on either side so that the pattern is continuous, and a reproduction having a continuous pattern is obtainable by applying successive impressions of the original to the surface to be treated. The pattern on each sheet to be reproduced is an image of the pattern on the adjacent sheets, and the original is built up from thin adjacent sheets 2, 3 cut from a block 1, so that the sheets have substantially identical patterns. The sheets are applied together end to end with alternate sheets turned over and reversed, and the ends of the sheets bevelled. The composite sheet can then be applied to a cylinder or used as a flat intaglio printing-plate, or an intaglio plate can be prepared photographically therefrom. Alternatively, two or more photographs can be taken of a single sheet of veneer, alternate photographs being taken from opposite sides of the sheet, and turned over and reversed when applied together end to end ; or gelatine positives can be prepared from the same or identical negatives, applied together end to end with alternate sheets turned over and reversed, and an intaglio plate prepared therefrom.
Patent GB-339638-A (GB)
Abstract: 339,638. Hocken, B., and Cox, J. H. R. July 12, 1929. Logarithmic calculators; totalizators. - In distant control calculating-apparatus particularly applicable to totalizators, and operated by the displacement of fluid through pipes, means are provided for indicating the ratio any item total bears to the grand total. In Fig. 2, which shows apparatus corresponding to one item, liquid displaced from a distant station for this item passes up a tube A into a vessel B and raises the mercury column in an index tube C above a normal electric contact index D whereupon an electric motor E drives a pump F to transfer fluid from the vessel B to a tank G until the mercury falls below the index D when the motor automatically stops. The motion of the pump F, which is thus proportional to the item fluid displacement in the tube A, is transmitted through a shaft H and gearing H<1> to a ram or displacer H<2> comprising a spiral plunger operating in a cylinder H<3>, which positively displaces a proportional amount of fluid along the pipe J to the total collecting apparatus. At the same time the rotation of a cylinder H<4> integral with the shaft H causes, through the agency of a cord H<5> passing round its periphery and that of a logarithmically contoured drum K<1>, gearing K<2>, and a displacer K<3>, a negative fluid displacement along the pipe K<5> proportional to the logarithm of the item total, back lash between the drums H<4>, K<1>, being prevented by a cord O attached to a counterweight device through a pulley P. Similar apparatus at the grand total station collects the fluid displacements from all the tubes J of the various items and returns a volume proportional to the logarithm of the grand total less a desired proportion deducted as taxes, if desired, through a pipe L, which, with the pipe K<5> is connected to a vessel B<1>. Thus the rotation of a pump F<1>, operated similarly to the pump F to keep the level in the vessel B' at the index D<1>, is proportional to the logarithmic difference of the grand and item totals. The indicator to show the ratio of these totals may be a logarithmically divided drum driven off the pump shaft M or the liquid displaced by the pump F<1> may be conveyed direct to a logarithmically calibrated tube.
Patent GB-897683-A (GB)
Title: A combination antiknock promoter for motor fuels
IPC: C10L1/10
Filed: 1960-10-04
Abstract: A motor fuel composition contains a motor fuel (e.g. gasoline), a lead olefinic anti-knock agent, and an octane appreciator of the formula R1(X)n(R2)mCOOR,[R1(X)n (R2)mCO]2O or R1CHO where R1 is hydrogen or a monovalent C1 to C29 hydrocarbyl radical, R2 is a C1 to C18 divalent hydrocarbyl radical, R is hydrogen or a tertiary C4 to C18 hydrocarbyl radical, X is -O- or =CO, n and m are 0 or 1, and the maximum total number of carbon atoms in the sum of R1, R2 and X is 29.  Suitable lead compounds are tetroalkyl lead, tetracrotyl lead, tetrapropenyl lead, tetramethylallyl lead, divinyl diallyl lead, vinyl allyl dicrotyl lead, vinyl allyl crotyl methylallyl lead or mixtures: the preferred compound is tetravinyl lead.  Suitable octane appreciators are aliphatic and aromatic carboxylic acids and anhydrides, ether acids and keto acids, tertiary alkyl esters thereof, and aldehydes (many examples of these classes are given). The preferred compound is tertiary butyl acetate.  The additives are effective in gasolines which do, and those which do not, contain olefines.  Other optional ingredients of the compositions include halogenated scavengers, alkyl acid phosphates, amine phosphates, dimerized linoleic acid, NN-di-sec-butyl-p-phenylene diamine, 2,4-dimethyl-6-tert-butyl phenol, 2,6-di-tert-butyl-4-methyl phenol, isopropanol, hexylene glycol, diethylene glycol mono-ethyl ether, dimethyl formamide, dyes, ethylene diamine, tricresyl phosphate, iso octyl diphenyl phosphate, and methyl diphenyl phosphate.
Patent GB-887093-A (GB)
Title: Improvements in or relating to a method and device for the manufacture of flexible tubing
IPC: B29D23/18
Filed: 1959-10-08
Abstract: 887,093. Flexible tubing. TECHNOCHEMIE KESSLER & CO. G.m.b.H. Oct. 8, 1959 [Oct. 11, 1958], No. 34135/59. Class 99(2). A method for the manufacture from an elastomer of flexible tubing with substantially smooth inner and profiled outer surface consists of winding a profiled tape 1, Figs. 1 and 2, helically over a coil of wire 5 or plastic material, the tape edges connecting with each other, wherein the wire and tape are guided by profiled feed and counter rollers 2, 4 and a rotating mandrel 3 only during the winding, the flexible tubing formed being axially pushed off and liberated from the mandrel 3. The roller 4, which can be dispensed with, has one profile corresponding to the tape 1, the other to the wire 5. The wire 5 is fed on to the mandrel 3 under a profiled roller 7 and over a pre-bending surface or roller 6. The overlapping edges of the tape 1 are connected, by softening the surface of the tape with heat or solvents, or by using an adhesive. The finished flexible tube is pushed axially off the mandrel by the action of the rollers 2 and 4.
Patent GB-1232238-A (GB)
Title: Variable compression ratio pistons in an internal combustion engine
IPC: F02B75/04
Filed: 1968-07-19
Abstract: 1,232,238. Pistons. CONTINENTAL AVIATION & ENG. CORP. 19 July, 1968 [20 July, 1967], No. 34435/68. Heading F2T. A variable compression ratio piston in an I.C. engine comprises outer and inner relatively movable members 12, 14 defining first and second chambers 30, 32 which vary oppositely in volume in response to movement of the members, the first chambers being arranged to discharge into the second chamber at a predetermined pressure and into the crank case through a secondary discharge 118 upon a greater predetermined pressure. Oil is fed to the chamber 30 via the connecting rod, an oil collector 47 and a triangular-shaped non-return valve plate 88. An orifice 126 controls leakage of oil from the chamber 32, the leakage permitting the outer member 12 of the piston to move upwardly a small distance on each engine cycle. When the gas pressure exceeds the upper limit a discharge valve 106 lifts to pass oil into the chamber 32 via a non-return ball valve 66. The secondary discharge 118 is controlled by a needle valve 116 carried by a plate 120 and set to open against the action of a spring 122 to allow rapid discharge of oil and downward movement of the outer member 12 relative to the inner when the gas pressure is suddenly increased. In a modification, Figs. 3 and 4 (not shown), the discharge valve at the chamber 30 is combined with the non-return valve for the chamber 32, the secondary discharge passage (238) being arranged between the valve members to discharge the volume of oil in excess of that required by the chamber (32) when the gas pressure exceeds the predetermined value; the leakage of oil from the chamber (32) is controlled by an orifice (240).
Patent GB-500455-A (GB)
Title: Improvements relating to electric furnaces for melting metals
IPC: H05B7/22
Filed: 1937-12-13
Abstract: 500,455. Electric furnaces. MAUTSCH, R. Dec. 13, 1937, No. 34510. Convention date, Dec. 24, 1936. [Class 39 (iii)] Furnace electrodes, particularly for the production of alloys, are formed by agglomerating metal cuttings according to Specification 500,504. They may be formed continuously at the furnace and two such electrodes are fed through bushes 13, an arc being maintained between their ends. Any desired gas is supplied through pipe 16. A single vertical electrode may co-operate with a molten bath. The cuttings 3 may be fed into a hopper 2 from which they are drawn by compression rolls 4. The guide tube 6 between the rolls 4 and further rolls 7, 8, which latter rolls also subject the cuttings to twisting, is provided with nozzles for the introduction of metal powder. Metal wire 23 of desired composition may be introduced by a guide 24.
Patent GB-203974-A (GB)
Title: Improvements in or relating to electromagnetic receivers
IPC: H04R13/02
Filed: 1922-12-19
Abstract: 203,974. Automatic Telephone Manufacturing Co., Ltd., and Smith, S. R. Dec. 19, 1922. Magnetic instruments. - An electromagnetic telephone receiver is adjusted by means of a disc 11 of magnetic material which is adapted to be moved in an axial direction nearer to or further from the pole-pieces on the opposite side of the coils to the diaphragm. The permanent magnet 5 is provided with pole-shoes 6, which carry the exciting coils 7 and are fixed to an insulating block 8. The disc 11 is moved within a central hole in the block 8 by means of a screw 12 with a milled head 13, and is held in any position by a spring 14. A coarse adjustment is provided in the form of paper rings which may be fitted between the diaphragm 4 and the case 3 containing the magnet system.
Patent GB-206399-A (GB)
Title: Improvements in or relating to electrically illuminated hanging box signs
IPC: G09F13/00
Filed: 1922-12-20
Abstract: 206,399. Brackensey, A. H., and Franco-British Electrical Co., Ltd. Dec. 20, 1922. Illumination, changing advertisements by controlling.-In a hanging box sign comprising two frames a fitted with glass and a resilient sheet metal body c expanded within the frames, lamps around the frames or the body may be controlled by switching means to produce consecutive, intermittent, or other illuminating effects.
Patent GB-867995-A (GB)
Title: Process for handling rubbery polymers
IPC: C08F8/00
Filed: 1957-11-07
Abstract: A process for continuously modifying solutions of rubbery polymers or copolymers of isoolefins is characterized in that a slurry of the polymer in an alkyl halide diluent is contacted with a liquid hydrocarbon of higher boiling point and which is a solvent for the polymer, under conditions adapted to volatilize diluent and dissolve the polymer and thereafter the dissolved polymer is subjected to chemical treatment or to compounding with solids and/or oils.  If desired the polymer solution may be contacted, before or after chemical treatment or compounding, with a non-solvent of higher boiling point than the solvent, under conditions adapted to volatilize solvent and form a slurry. Specified non-solvents are alcohols, ethers, ketones, hydrocarbon oils, waxes, asphalt, resins, plasticizers, organic phosphates, and in particular water which may contain any of a wide variety of emulsifying agents.  Many various chemical treatments are specified, e.g. halogenation (optionally followed by other described chemical treatments), nitration, sulphonation, and reaction with aromatic nitroso compounds, azo-carboxylates, aldehydes, acid anhydrides, halogenated multiolefins, polar organic compounds containing nitrogen, phosphorus and/or oxygen, and aromatic sulphenyl or selenyl halides. Vulcanization of the products with the usual ingredients may then be effected. Compounding ingredients disclosed are carbon blacks, resins, metal salts, silicas, clays, zinc oxide, calcium oxide, magnesium oxide, titanium dioxide, lead oxides, iron oxides, metal silicates, aluminas, sulphur, quinoid compounds, dinitroso compounds, accelerators, ultra-accelerators, anti-oxidants, waxes, clays, plasticizers, hydrocarbon oils, tars, organic esters and mixtures thereof.  Solvent may be removed and vulcanization of the compositions may then be effected by means of the usual ingredients. The Figures accompanying the Specification illustrate continuous processes for the preparation, purification and modification of butyl rubber prepared using Friedel-Crafts catalysts.  Specification 867,996 is referred to.
Patent GB-189004-A (GB)
Title: Improved electric lamp bulb fitting
IPC: H01R33/97
Filed: 1921-12-28
Abstract: 189,004. Oswald, D. M. Dec. 28, 1921. Holders.-A device for locking bulbs 1 in their holders 2, comprises a ring 5 adapted to screw on to the holder and, if desired, to support the shade 6, and a continuous ring 8 connected to the ring 5 and adapted to bear against the pins 4 of the bulb cap, to prevent withdrawal oi the bulb and to press the bulb into the holder. A notch is provided in the ring 8 to allow the pins 4 to pass when the bulb is tilted before the ring 5 is screwed up. The ring 5 may be milled, notched, or otherwise adapted to be turned by a special tool.
Patent GB-1472364-A (GB)
Title: Apparatus for producing casting moulds consisting of identical mould parts
IPC: B22C11/04
Filed: 1975-08-21
Abstract: 1472364 Foundry moulding DANSK INDUSTRI SYNDIKAT AS 21 Aug 1975 [5 Sept 1974] 34851/75 Heading B3G Identical mould parts 15<SP>1</SP>, 15<SP>11</SP> which are stacked together and moved stepwise on a guideway 10 with at least one pouring cavity between the stacked parts are produced in a pressing chamber 1 fed with sand through a slot 2, the sand being compressed between a pressure plate 3 and a counterpressure plate 5 swingably mounted on a member 8 movable along guides 9. After pressing a mould part, the plate 5 is swung and moved to the position of Fig. 1 and a carrier frame 12 is moved towards the open end of the pressure chamber by a cylinder 14 where it receives the mould part delivered to it by the plate 3. The mould part is clamped to the frame which is then moved to position the part against the stack where it is temporarily held by means 17 during unclamping. In the embodiment of Fig. 4 carrier frames 12a-12e on a rotary ring 20 are moved stepwise to align with a stationary pressure chamber 1 with pressure plates 3, 5 and to receive a mould part which is delivered to a stacking position.