baber/WOPTO huggingface dataset:
Patent GB-1188415-A (GB)
Title: Cured Epoxy Resins and process for preparing them
IPC: C08L63/00
Filed: 1968-03-18
Abstract: 1,188,415. Curing epoxy resins. FARBWERKE HOECHST A.G. 18 March, 1968 [16 March, 1967], No. 12908/68. Heading C3B. Glycidyl ethers and/or glycidyl amines are cured at elevated temperature, e.g. 20-200‹ C., with a branched chain propylene oxide amine having M.W. 300-1700 and of formula in which X is OH or amino but at most 40% of the X groups are OH and m 1 , m 2  and m 3  are integers from 1 to 10, optionally in the presence of an aliphatic polyamine having an amine equivalent of 15 to 60. A suitable glycidyl ether is that of bisphenol A having an epoxide equivalent of 190 to 250. Suitable glycidyl amines have epoxide equivalents of 120-250. Examples of (cyclo)-aliphatic co-curing agents are: hexamethylenediamine; diethylenetriamine; triethylenetetramine; imino - bispropylamine (bis - y - amino - propylamine); bis - γ - aminopropyldiethylene glycol ether; N - cyclohexylaminopropane; 4,4<SP>1</SP>- diamino- 3,3<SP>1</SP> - dimethyldicyclohexylmethane; 1,4 - bisaminomethylenecyclohexane; 3,3,5 - trimethyl- 5 - aminomethylcyclohexylamine; 2,2,4 - trimethylhexamethylenediamine and 2,4,4 - trimethylhexamethylenediamine.
Patent GB-413841-A (GB)
Title: Improvements in or relating to electric cables
IPC: H01B7/36
Filed: 1933-05-04
Abstract: 413,841. Cables. PIRELLI-GENERAL CABLE WORKS, Ltd., 343, Euston Road, London, and BISHOP, J. L., 358, Winchester Road, Bassett, Southampton. May 4, 1933, No. 13040. [Class 36.] To ensure continuous contact between the earth wire and the lead sheath of a flat cable comprising cores 2 laid up side by side, and with an earth wire 4, within a lead sheath 1, the earth wire is laid on a tape 3 of cellulose acetate, the material known under the Registered Trade Mark " Cellophane," or other resilient and non-hydroscopic cellulose derivative which is applied either longitudinally, as shown, or helically over two adjacent cores. The tape 3 may be marked with identification matter.
Patent GB-275355-A (GB)
Title: Improvements in furnishing rollers or brushes for printing machines for printing cotton or other fabrics or yarns
IPC: B41F31/26
Filed: 1926-05-25
Abstract: 275,355. Brushes, Ltd., and Shaw, W. T. May 25, 1926. Inking-apparatus.-A roller or brush for conveying colour from a trough to the engraved roller of a calico or yarn printing machine is provided at each end with one or more grooves d of V- form presenting their open ends to the ends of the roller and their points of reversal d<2> towards the middle of the length of the roller. As the roller rotates, the colour circulates through the grooves and is thus kept well stirred. The grooves at one end of the roller may be opposite to those at the other end or may be in staggered relationship therewith.
Patent GB-1056733-A (GB)
Title: Process for the conversion of nitrogen-containing hydrocarbon oils
IPC: C10G65/12
Filed: 1965-03-29
Abstract: A process for the conversion of a nitrogen-containing hydrocarbon oil at elevated temperature and pressure, in the presence of hydrogen and in a reaction system containing a single solid acid-acting conversion catalyst, comprises contacting the hydrocarbon oil with a minor portion of the total catalyst, organic nitrogen compounds being converted to ammonia, thereby withdrawing ammonia-containing gas from the reaction system, treating the withdrawn gas to remove at least part of the ammonia, and contacting the treated gas and the hydrocarbon oil with the remaining portion of the total catalyst. The conversion process may comprise hydrocracking, hydrodenitrification, hydroisomerization, catalytic cracking or reforming.  In an example, an oil which had previously been hydrotreated to reduce the nitrogen content from 516 p.p.m. to 25 p.p.m. was hydrocracked on a nickel-fluorine-silica-alumina catalyst arranged in four sequential reactors, the vapour from the first being treated for removal of ammonia before returning to the remaining stages.
Patent GB-1360132-A (GB)
Title: Tubular heat exchange member having leakage indicating means
IPC: F28F1/00
Filed: 1972-03-21
Abstract: 1360132 Tubular heat exchange elements WIELAND-WERKE AG 21 March 1972 [30 March 1971] 13273/72 Heading F4S A tubular heat exchange element comprises three concentric tubes 1, 2 and 3 spaced apart by pyramidal projections 8 to define therebetween respective intervening spaces 4 and 5 for leakage detection purposes. The pyramidal projections 8 are formed on the outer surfaces of both the tubes 2 and 3. If there is a leak, pressure gauges connected at 6 and 7 to each of the spaces 4 and 5 will trigger an alarm when the pressure inside one or other of the spaces 4 and 5 changes. The heat exchange element may be used in a nuclear reactor where molten sodium flowing through the innermost tube 3, serves to heat water or steam flowing over the outer surface of the outermost tube 1.
Patent GB-281942-A (GB)
Title: Change speed friction drive gearing
IPC: F16H15/54
Filed: 1927-05-17
Abstract: 281,942. Jacobsen, R. S. May 17, 1927. Variable-speed gearing comprises planetary friction rollers 30 engaging pairs of inner and outer races 12, 13 and 23, 24, respectively. The races 12, 13, which are pressed into engagement by springs 16, 17 constitute the driving-element of the variable train. The rollers 30 are pivotally supported by arms 31 upon a spider 33 fast on a driven shaft 18. the speed of which is variably reduced, as the races 23, 24 do not turn. The speed is varied by axial displacement of one of the outer races. By turning a control handwheel 27 with a screwed boss 4, a sleeve 21 carrying the race 24 is moved axially, a non-rotary sliding connection being provided at 26. The rollers 30 are double-conical with concave friction surfaces. The races are convex. In the arrangement shown, the inner races 12, 13 are splined upon a sleeve 14 driven at a constant reduced speed from a driving-shaft 5 through a planetary toothed train 9, 10, 11.
Patent GB-1006130-A (GB)
Title: Dampers for stringed instruments
IPC: G10D3/04
Filed: 1964-03-31
Abstract: 1,006,130. Stringed musical Instruments.H. WASTL. March 31, 1964 [March 27, 1963], No. 13295/64. Heading G5J. A vibration damper for a stringed instrument comprises a yoke member 4 which has a pad 7 of foam rubber or other soft material secured to its upper face and which is pivoted on pins 6, 6<SP>1</SP> set in the bridge 2, and a tension-spring 9 adapted to hold the yoke in either an " off " or an " on " position, the pad being pressed against the strings 3 in the " on " position. The damper is moved from one position to the other by finger pressure on the appropriate end of arm 5 or 5<SP>1</SP>, the yoke then pivoting about the axis defined by pins 6, 6<SP>1</SP> and a " snap " action taking place as the spring 9 moves across that axis. The tension of spring 9 may be adjusted by moving shackle member 10 by turning nuts 11, 11<SP>1</SP> on screws 12, 12<SP>1</SP> which extend from the bridge 2. A separate frame may be provided for the damper, located in front of and parallel to the bridge. A compression spring may be used instead of a tension spring.
Patent GB-394796-A (GB)
Title: Improvements in filters for vacuum cleaners
IPC: A47L9/12
Filed: 1932-05-09
Abstract: 394,796. Air filters. ELECTROLUX, Ltd., 153, Regent Street, London.- (Assignees of Inventia Patent-Verwertungs. Ges.; 10, Herrenacker, Schaffhausen, Switzerland.) May 9, 1932, No. 13347. Convention date, May 11, 1931. [Class 8 (ii).] A filter for vacuum cleaners consists of a layer 17 of unwoven fibres, lying parallel to one another in the plane of the filter, supported on gauze 16, with a layer 18 of fabric such as flannel preferably spaced from the first two layers. The whole is secured on a carrier ring 20.
Patent GB-276427-A (GB)
Title: Process for the purification of hydrocarbons obtained by cracking processes
IPC: C10G29/12
Filed: 1926-05-26
Abstract: 276,427. Carpmael, W., (I. G. Farbenindustrie Akt.-Ges.). May 26, 1926. Mineral oils, purifying.-Cracked oils are freed from the more unsaturated constituents by heating with ferric chloride containing water. For example, 100 lb. of crude benzine are boiled under a reflux condenser with 2 lb. of melted crystalline ferric chloride hydrate, distilled, and washed with water or dilute alkali. The prior use of ferric chloride is referred to.
Patent GB-231810-A (GB)
Title: Manufacture of cellulose derivatives
IPC: C08B11/12
Filed: 1924-05-30
Abstract: Cellulose derivatives insoluble in water but soluble in aqueous alkalies are obtained by treating cellulose or an alkali-in-soluble cellulose conversion product, with a monohalogen fatty acid or a salt, ester or other derivative thereof, in the presence of caustic alkali and an aliphatic alcohol, the molecular proportions of halogen fatty acid to free caustic alkali being not more than 0.5 : 1, for instance, not more than 0.3 : 1.  The stronger the caustic alkali solution, the less halogen fatty acid is necessary, according to the rule that 8/a molecular proportions of halogen fatty acid are used with each molecular proportion of caustic alkali, where a is the percentage strength of the caustic alkali solution, allowance being made for any water to be added with the halogen fatty acid and for alkali consumed in neutralizing the acid.  The products are precipitated from their solutions in alkalies by reagents that will neutralize the alkali, even while the mixture is still alkaline in reaction; and also by the addition of alcohol.  The products obtained when in the form of threads or films are strong, flexible, and transparent; they may therefore be used for the manufacture of artificial threads, films, plastic compositions, coatings, finishes, sizes, thickening-agents for textile printing, and fixing-agents for pigments.  The halogen fatty acid may be in the dissolved or undissolved condition; the reaction may be carried out at ordinary temperature or at a raised or lower temperature; the alkali may be first incorporated with the cellulose either as a solution or in the solid state, or partly as a solid and partly as a saturated solution; the alcohol may be added with the caustic alkali, or with the halogen fatty acid.  The reaction mixture may be worked up into technical products, as a solution after the addition of water or dilute caustic alkali solution; or the derivative may be isolated, for instance, after neutralization or acidification, or the derivative may be first brought to solution by the addition of water or caustic alkali solution, and afterwards precipitated by acid, an ammonium salt or other reagent that will fix alkali.  Suitable mono-halogen fatty acids are monochloracetic acid, a -bromo- or a -chloro-propionic acid, b -iodapropionic acid, bromosuccinic acid, and a -bromisobutyric acid.
Patent GB-982117-A (GB)
Title: Method of dyeing films
IPC: D06P7/00
Filed: 1962-04-06
Abstract: A hydrophobic thermoplastic synthetic resin film is dyed by immersing a layer of an absorbent web in a dyestuff liquor, superimposing the wetted web upon a layer of the film, winding the film and superimposed web into a roll and slowly rotating the roll in a high temperature steamer to transfer the dyestuff from the web to the film, the steamer being operated at a temperature of from 105 DEG C. to 130 DEG C. and at a pressure of up to 2 Kg./cm2. gauge.  The film may be polyethylene terephthalate, polyethylene or polypropylene, and the web may consist of cotton flannel, felt, non-woven fabric or sponge.  An example is given.
Patent GB-705080-A (GB)
Title: Improvements in or relating to ultra-sonic wave absorption apparatus
Inventor: MORTLEY WILFRID SINDEN
IPC: G10K11/00
Filed: 1951-06-06
Abstract: 705,080. Piezo-electric crystals. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Feb. 14, 1952 [June 6, 1951], No. 13433/51. Class 40 (8) An ultra-sonic absorbtion cell for absorbing ultra-sonic wave energy from a quartz &c. transducer 3 comprises an elongated member 1 made of a material similar to that of the transducer and of similar r crystallographic orientation, the member being so shaped, dimensioned and positioned as to subject the waves to a large number of reflections in its interior. The cell shown in Fig. 1 has a sloping end face 1d, the crystal 3 being mounted in intimate physical contact with the plane face 1b. If the end face 1c is inclined slightly to the face 1b a larger number of reflections is obtained. The cell may also be in the form of an exponential horn, Fig. 3, or a cone, Fig. 4 (not shown). The cell may be coated with or immersed in an absorbent semi-liquid such as wax or pitch. Alternatively, for the same purpose. a thick. fired-on spongy silver film preferably coated with solder may be used. An outer coating of bituminous material may be applied to such a coating.
Patent GB-1162074-A (GB)
Title: Hermetic Metal-to-Glass Seals
Inventor: SCHERER JEREMY D
IPC: H01G9/10
Filed: 1968-03-20
Abstract: 1,162,074. Glass to metal seals. ISOTRONICS Inc. 20 March, 1968, No. 13457/68. Heading C1M. An hermetic glass to metal seal comprises a steel aperture containing member 3 or 13 clad with a ductile corrosion resistant metal 4 or 14 and at least one corrosion resistant terminal 1 or 11 extending through the aperture, out of contact with the member 3 or 13, and sealed thereto by fused glass 2 or 12, the coefficient of expansion of the glass being at least as great as the coefficient of expansion of the terminal 1 or 11 and less than the coefficient of expansion of the member 3 or 13. Preferably the coefficient of expansion of the glass is greater than that of the terminal. The terminal is preferably an electrolytic oxide film-forming metal such as Ta or Nb, and the steel member 3 or 13 is clad with Ag, An, Cu, Ta, Pt, Nb or Al. Pt alloys, W and Ti are also mentioned as suitable. In a particular example a Ta terminal was sealed in mild steel with a cladding of Ag by a bead of potash-soda glass by heating in an atmosphere of argon. The seals can then be welded into structures such as those shown.
Patent GB-584669-A (GB)
Title: Improvements in and relating to cold rolled alloy iron or alloy steel articles
IPC: C22C38/04
Filed: 1943-08-19
Abstract: Cold-rolled alloy iron or steel articles contain 15.5 to 20 per cent. of manganese, nickel or copper or both, the nickel between 0.25 and 4.5, preferably 1-2.5, and copper 0.25-2.5, preferably 0.5-1.75 and if desired, chromium 0.25-7.0 and the remainder iron, i.e. pure iron or containing 0.01-1.0, preferably less than 0.35 of carbon, up to 0.15 of nitrogen, up to 0.2 of phosphorus, up to 0.05 of sulphur and up to 1.0 of silicon. Preferably the article contains 16-18 per cent. of manganese and 0.5-1.25 of copper with or without 1-4 of chromium, preferably 3 per cent., in a particular example containing 16 of manganese, 1.5 of nickel and 0.75 of copper.  The cold-rolled articles may be heated at 100-250 DEG C. for 1/2 -100 hours. Specifications 124,817, 125,157, [both in Class 72], 463,252 and 473,201 are referred to.
Patent GB-814668-A (GB)
Title: Polymerisation of ethylenically unsaturated compounds
Inventor: BATTY JOHN WOOLLEY
IPC: C08F4/04
Filed: 1956-05-02
Abstract: Ethylenically unsaturated compounds are polymerized using as catalyst at least one organic hyponitrite wherein the organic residue contains at least one ether oxygen atom.  Specified unsaturated compounds are butadiene, vinyl acetate, ethylene, styrene, methyl methacrylate, acrylonitrile, vinyl chloride and mixtures of butadiene and acrylonitrile, and ethylene and N-vinyl phthalimide.  Specified hyponitrites are bis-methoxymethyl hyponitrite, bisethoxy-methyl hyponitrite, bis-isopropoxymethyl hyponitrite, bis-isobutoxymethyl hyponitrite, bis-cyclohexyloxymethyl hyponitrite, isoamyloxymethyl hyponitrite, dodecyloxymethyl hyponitrite, sec. octyloxymethyl hyponitrite, a -isobutoxyethyl hyponitrite, 1,3-dimethylbutyloxymethyl hyponitrite, 3,5,5-trimethylhexylocymethyl hyponitrite, bis-ethoxyethoxyethoxymethyl hyponitrite, a ,a ,a 1,a 1-tetraethoxyethyl hyponitrite, bis-a -methoxybenzyl hyponitrite, bis - a  - ethoxy - a  - cyclohexylmethyl hyponitrite, bis-phenoxymethyl hyponitrite, bis - chloromethoxymethyl hyponitrite, bis - 2 - tetrahydrofuranyl hyponitrite, bis - 3-chloro - 2 - tetrahydrofuranyl hyponitrite, bis-tetrahydropyranyl hyponitrite and poly-1,2-aza-3,5,7-oxaheptane.  The hyponitrites may be prepared in situ from metallic hyponitrites and halo ethers, preferably in the presence of a solvent, e.g. the diethyl ether of ethylene glycol, m-dioxane, paraffins, benzene, xylene, chlorobenzene and anisole. Polymerization may be effected in bulk, solution, e.g. in ethyl acetate, dimethyl formamide, diethyl oxalate, diethyl ether of ethylene glycol, methyl isobutyl ketone, tetrahydrofuran, 4-methylmorpholine and diethyl-2-methylmalonate; or aqueous dispersion, e.g. in the presence of polyvinyl alcohol, starch methyl ether, potassium oleate, sodium dinaphthylmethane disulphonate and turkey red oil.  Chain transfer agents, e.g. hydrogen, carbon tetrachloride and chloroform, and modifiers, e.g. dodecyl mercaptan may be present.  Monomers and catalyst may be added during the polymerization.  The polymers may be used in water paints and for treating textiles.  Specifications 618,168, 796,728 and 813,460 are referred to.
Patent GB-378447-A (GB)
Title: Improvements in electromagnetically operated relays
IPC: H01H51/08
Filed: 1931-05-07
Abstract: 378,447. Electric signalling systems. LISTER, H., Oaklands, Woodstock Road, Chorltoncum- Hardy, ASH, F. S., 20, Malvern Avenue, Flixton, both in Manchester, and ASSOCIATED ELECTRICAL INDUSTRIES, Ltd., Crown House, Aldwych, London. May 7, 1931, No. 13591. [Class 40 (i).] An electromagnetically-operated relay which may be employed in a tele-metering system is operated by electromagnets 2, 3, Fig. 1, on a core 1, an armature 4 being mounted on a pivot 5 between the polepieces 1a, 1b. On energization of the electromagnets the armature is drawn into line with the polepieces against a return spring 5 and by means of a link 7 and pawl 9 moves a ratchetwheel 10 through a single step so operating indicating recording or other apparatus through gearing 12, 12a. Also mounted on the shaft 11 carrying the ratchet 10 is a plate 13 bearing half as many pins 14 as there are ratchet teeth, the pins being adapted to change-over a snap-action switch 15, 17, 18 at each stepping-movement, so interrupting the circuit of the magnets 2, 3 slightly in advance of the completion of the stroke of the armature, and preparing a circuit for a subsequent energization. The switchoperating mechanism shown in Figs. 2 and 3 comprises an arm 23 pivoted at a fixed point 24 and an arm 21 pivoted to the arm 23 at 22 and carrying a pin 20 engaging a slot 19 in the pivoted switch arm 15, the arm 21 being acted upon by an adjustable spring 25. In moving a step between the positions shown in Figs. 2 and 3 the lengthened upper end of the arm 23 escapes from a pin 14 and the two arms are moved together to change over the contact arm 15 to the position shown in Fig. 3. In the next step the shorter arm 21 escapes past a pin 14 and is pivoted around the point 22 to restore the arm 15 to its former position. The movement of the switch arm in each case breaks the circuit of the electromagnets 2, 3 with a snap action and prepares the circuit for a subsequent energization. In the circuit arrangement shown in Fig. 4 in which the relay is employed for recording at a distance the movements of a meter 29, operating current impulses are sent through the switch 15, 17, 18 alternately over pilot wires 31, 32 from the brushes 33, 34 of an interrupter driven from the meter through gearing 29, the return path including a pilot wire 27 and a brush 28.
Patent GB-1028487-A (GB)
Title: Improvements in and relating to a control valve device for use in drawing off liquids under gas pressure
IPC: F16K31/22
Filed: 1965-03-31
Abstract: 1,028,487. Valves. A/S ANTON PETERSON & HENIUS EFTF. March 31, 1965 [May 21, 1964], No. 13645/65. Heading F2V. A control valve device for use in drawing off liquids, particularly beer, by means of a pressurized gas comprises a housing 1 having an upper inlet chamber 5 and a lower outlet chamber 7 and a wall 8 between the chambers, two valve seats on the wall facing upwards and downwards, respectively, a float-controlled valve member 9 movable in the upper chamber and co-operating with the upper valve seat, and a manually displaceable valve member 10 cooperating with the lower valve seat and designed during its closing operation to directly or indirectly engage the float-controlled valve member when the latter is in engagement with its seat. The float-controlled valve is integral with its float which is slidably engaged with an extension of a screw-actuated spindle 14 for the valve 10. A sight glass 24 having a cover 25 with a manual venting valve 28 forms the float chamber. The float valve member may be replaced by a ball and it may be indirectly coupled to the valve 10.
Patent GB-369058-A (GB)
Title: Improvements in drill sharpeners
IPC: B24B3/24
Filed: 1931-05-08
Abstract: 369,058. Sharpening rock drills. TRIGGS, W. W., 57, Lincoln's Inn Fields, London.-(Ingersoll-Rand Co. ; 15, Exchange Place, Jersey City, New Jersey, U.S.A.) May 8, 1931, No. 13697. [Class 83 (iv).] In a drill sharpener comprising a base B supporting the anvil block D and cylinder C of a clamping piston S connected by a column F to the crosshead G and having a stem R guided in a bore Q in the base the stem R has a recess v providing communication between the cylinder C and relief ports w through the wall P of the bore Q so that when piston S makes its clamping stroke the air trapped under the piston escapes through recess v and ports w and thence through port u to the atmosphere near the end of the stroke shoulder x closes bore Q and traps the air remaining under the piston S, whereby the movement of piston and crosshead is cushioned. The end of the stem R together with the end W of the column F and the nut Y being always open to the air-pressure reservoir K serves as a raising piston. Air is admitted to the cylinder by means of a handoperated valve c, the exhaust air passing through passage s leading to an exhaust chamber t open to the atmosphere at u. Vacuum formation under the piston S is prevented by a lift valve 5 communicating with exhaust chamber t.
Patent GB-1258475-A (GB)
Title: Purification of streptomycin
Inventor: NAGER URS FELIX
Filed: 1969-03-17
Abstract: 1,258,475. Streptomycin purification. E. R. SQUIBB & SONS Inc. 17 March, 1969, No. 13890/69. Heading C2A. Streptomycin in a mineral acid salt form is purified from a fermentation broth containing streptomycin by (a) adsorbing the whole fermentation broth on a bed of a carboxylic acid cation exchange resin in an alkali metal salt form; (b) washing the streptomycin-containing resin bed with an aqueous solution of a chelating agent; (c) washing this bed with an aqueous solution of carbonic acid until substantially all alkali metal ions are removed therefrom, the streptomycin remaining on the resin bed through these steps .(a), (b) and (c); (d) eluting the purified streptomycin from the resin bed in a mineral acid salt form with a mineral acid solution of 1 to 5 N at a controlled flow rate, the mineral acid portions of the streptomycin-acid salt corresponding to the mineral acid used; and (e) recovering the streptomycin-mineral acid salt from the eluate. The chelating agent may be ethylenediamine tetra-acetic acid or nitrilotriacetic acid and the mineral acid may be sulphuric, nitric or phosphoric acid. The carboxylic acid cation exchange resin may be of the acrylate or methacrylate/styrene/divinyl benzene type preferably in the sodium salt form.