baber/WOPTO huggingface dataset:
Patent GB-1460755-A (GB)
Title: Transformer-coupled square wave oscillators
IPC: H03K3/45
Filed: 1974-02-19
Abstract: 1460755 Transformer coupled square-wave oscillator LANSING BAGNALL Ltd 3 March 1975 [19 Feb 1974] 7385/74 Heading H3T A square-wave oscillator of the type in which the collector-emitter paths of two transistors 3, 4 are connected in series with the primary winding 5 of a transformer to the centre tap of which a positive supply is connected, is characterized in that the bases of the two transistors are connected by two parallel paths, one including a feedback winding 14 of the transformer and the other including a saturable-cored choke 12. The oscillator operates in the usual manner, the voltage from the feedback winding 14 being shunted by the choke once it saturates.
Patent GB-1386783-A (GB)
Title: Panels for screens
IPC: A47G5/00
Filed: 1971-03-19
Abstract: 1386783 Screens FAIRBAIRN LAWSON Ltd 2 June 1972 [19 March 1971] 7422/71 Heading A4U [Also in Division B5] A screen panel comprises a laminate of a transparent or translucent sheet 13 sandwiched between two outer sheets 12, which outer sheets provide a substantially opaque screen; a substantial area of the transparent or translucent sheet extending beyond the area of the outer sheets; wherein the transparent or translucent sheet has no surrounding frame, the rigidity of the sheet being dependent upon the inherent rigidity of said sheet and the support offered to the sheet by the outer sheets. In the embodiment shown, all the sheets have the same width, the sandwiched sheet being higher than the outer sheets; in an alternative embodiment the sandwiched sheet may project beyond one or both sides of the outer sheet. The central sheet may be made of a plastics material e.g. an acrylic resin, may be tinted, and is adhesively bonded to the outer sheets which may comprise timber e.g. veneered timber, composition board or plastics material, and may have a coloured surface. In a modification of the panel, the two outer sheets may each be coloured, the colour of each sheet being selected so that in the panel, the two sheets provide a substantially opaque screen. A plurality of the panels may be connected by hinges 14 and assembled on a support 11 to form a screen.
Patent GB-1496698-A (GB)
Title: Multicolour offset press
IPC: B41F7/10
Filed: 1975-02-22
Abstract: 1496698 Multicolour printing K AKIYAMA 22 Feb 1975 7554/75 Heading B6C A multicolour printing apparatus comprises printing units 1, 2 each with plate cylinders 5, blanket cylinders 6 and a common impression cylinder 7 whose diameter is three times that of the other cylinders. The blanket cylinders 6 are spaced apart by a distance greater than the length of their transfer surface. A central transfer cylinder 8 has the same diameter as cylinder 7. A common drive source 15 operates both units. Grippers are provided on cylinders 7 and 8 at corresponding positions.
Patent GB-313474-A (GB)
Title: Improvements in and connected with signs for advertising and other purposes
IPC: G09F13/14
Filed: 1928-03-12
Abstract: 313,474. Simmons, E. March 12, 1928. Signs.-A daylight reflector sign of the kind having an open front has an inclined mirror provided with the symbols &e., the reflecting surface being masked to form the reflecting symbols or opaque symbols being surrounded by the reflecting surface. The casing a carries an inclined mirror m having on its front surface a stencil s and a cover glass k. The top of the sign is provided with a glass sheet d and has an extension q carrying a lamp r, a lid o being provided and connected at the rear to the casing by a hinge p. The lid is swung downwards for daylight illumination. In a modification, the lid is replaced by a spring-roller shutter w, Fig. 5, having a cord z passing over a pulley 2 at the rear of the casing so that by pulling the cord the shutter can be drawn over the top of the casing. The cover glass v may be frosted and the shutter dispensed with.
Patent GB-642796-A (GB)
Title: Improvements in or relating to superheterodyne mixing circuits
IPC: H04B1/26
Filed: 1948-03-12
Abstract: 642,796. Superheterodyne circuits. PHILIPS ELECTRICAL, Ltd. March 12, 1948, No. 7613. Convention date, Sept. 20, 1947. [Class 40 (v)] In a superheterodyne mixing circuit a highfrequency amplifier 3 and frequency changer 3<SP>1</SP> are cathode-coupled by means of a tuned circuit 16. Local oscillations are generated in the valve 3<SP>1</SP> by back-coupling the first and second and fourth grids over circuit 21, while gain control is applied to the third grid and also to the grid of the valve 3. The arrangement gives low radiation and prevents variation of the frequency of the local oscillator when the gain is varied.
Patent GB-1529104-A (GB)
Title: Process for the electrodeposition of chrome plate
IPC: C25D3/10
Filed: 1976-02-26
Abstract: 1529104 Tetraethylammonium perfluorooctylsulphonate BAYER AG 26 Feb 1976 [28 Feb 1975] 7614/76 Heading C2C [Also in Division C7] Tetraethyl ammonium perfluoroctane sulphonate is prepared by reaction at 100‹ C. in chlorobenzene of perfluoroctane sulphonyl chloride, triethylamine and triethoxy methyl silane, with gaseous methyl trifluorosilane as byproduct.
Patent GB-413430-A (GB)
Title: Manufacture of muscle adenylic acid
IPC: C07H1/02
Filed: 1933-03-13
Abstract: Muscle adenylic acid is prepared by adding an alkaline earth metal hydroxide to a crude extract containing muscle adenyl-pyrophosphoric acid, heating the alkaline earth metal salt of muscle adenyl-pyrophosphoric acid thus obtained in the presence of an alkaline earth metal hydroxide, eliminating the inorganic phosphate, and isolating the muscle adenylic acid from the filtrate.  The crude extract used as starting material may be obtained by extracting animal tissues, e.g. the muscle or brawn of a horse, with trichloracetic acid while cooling.  As a result of the treatment with an alkaline earth metal hydroxide, the alkaline earth metal phosphate precipitates and is removed by filtering or centrifuging; the precipitation of the phosphate may be completed by the addition of the acetate of the corresponding alkaline earth metal.  The isolation of the muscle adenylic acid from the filtrate is effected with the aid of a heavy metal salt, e.g. lead acetate, and the salt decomposed with acid.  Examples are given.ALSO:A crude extract of animal tissue, e.g. the muscle or brawn of a horse, with cold trichloracetic acid is heated with excess of an alkaline earth metal hydroxide, the phosphate removed by filtering or centrifuging, and muscle adenylic acid then isolated from the filtrate by treatment with a heavy metal salt, e.g. lead acetate, followed by decomposition with acid. Examples are given.
Patent GB-334903-A (GB)
Title: Electric signs
IPC: G09F13/00
Filed: 1929-03-08
Abstract: 334,903. Quain, J. R. March 8, 1929. Coin action, mechanical-connection; electricity, administering.-An advertising or like device is combined with a high frequency high tension electric therapeutic apparatus which may be coin-operated. A two-part casing a, a' has a glass front to the rear of which is applied a poster &c. b, close in front of or behind which is arranged an electrode d comprising a sheet of foil &c. This electrode is connected through contacts j, i with a transformer h, a condenser g, and a trembler coil f. On energizing the coil f from the mains &c. a person may obtain discharges and violet ray effects by placing a hand on or near the outer surface of the glass front. Spark discharges may also be produced at parts e of the poster b or by incorporated in lettering, an adjustable gap r being provided to vary the intensity of the displayed sparks. A coin-operated means for actuating the device may consist of pushers m, n connected together by a coin which has dropped down a shoot, l and a time switch o by which the circuit through the coil f is completed and, after a lapse of time, broken again. A switch p in the coil circuit is closed only when the spring-retracted pusher m returns, thus ensuring that the coin shall fall from bebetween the pushers m, n before the apparatus begins to work.
Patent GB-197305-A (GB)
Title: Improved holdfast for detachably retaining way-bills, notices, cards, papers and the like particularly on railway vehicles
IPC: B61D49/00
Filed: 1923-03-19
Abstract: 197,305. Cole, W. I. March 19, 1923. Clamping-device.-In a device for attaching waybills, notices, &c. to railway vehicles, milk cans, &c., or commercial papers to a backing, of the kind consisting of a spring steel strip provided with a hinged handle and secured to the surface against which the papers are to be held by screws, bolts, &c. passing through slots in the strip, a single strip is arranged to hold several sets of papers. For this purpose the strip 1 is provided with several handles 7, and a slot 3 and screw 6, similar to those at the ends, are provided between each pair of handles. Pockets 17 are provided to hold the ends of the papers 8. The Specification as open to inspection under Sect. 91 (3) (a) also describes devices for holding a single set of papers. This subject-matter does not appear in the Specification as accepted.
Patent GB-213905-A (GB)
Title: Improvements in or connected with the framework of looms for weaving and of other textile machines
IPC: D03D49/02
Filed: 1924-03-28
Abstract: 213,905. Bruyere, Banzet, et Cie, Soc. Dauphinoise de MatÚriel Textile. April 4, 1923, [Convention date]. Machinery frames.-The framework of weaving looms and other textile machines is so arranged as to allow for complete tooling by machine tools of the various facings. The web A of the framework, which may be formed with external ribs B and internal ribs H, is cast with facings C for the bearing-bushes I for the various shafts, and extends inwards at the parts D - - G to form facings for the various crosspieces. The facings on the parts D - - G are all in one plane and the facings C are all in another plane, parallel to the first. The bushes I, which are all similar, are externally machined and are mounted in openings J bored correspondingly and provided with gaps K somewhat larger than the diameter of the shafts. By means of bolts, flaps N on the bushes are held against the seatings C. The bushes 0 for the cloth beam are eccentrically bored so that the position of the beam can be adjusted by rotating the bushes in the openings J, the flaps of the bushes being slotted. The external ribs B may be omitted. The bushes and the seatings may have conical or cylindrical surfaces, and may be provided with pockets or recesses. The seatings may be of less width than the framework. The web may have flanges on one or both sides.'
Patent GB-456493-A (GB)
Title: Improvements in methods of and apparatus for discharging into the open air the exhaust steam of steam plants, more particularly locomotives
IPC: F23L17/16
Filed: 1936-03-17
Abstract: 456,493. Steam engines. KRUPP AKT.- GES., F., Essen, Germany. March 17, 1936, No. 7984. Convention date, March 29, 1935. [Class 122 (iii)] [See also Groups XXXI and XII] The exhaust steam from locomotives and other steam plant is divided into two parts, one part being condensed and the other part being diluted with air which has taken up heat from the condensed steam, the resulting invisible mixture being discharged into the open air. The furnace gases may be added to the mixture. In the construction shown in Fig. 1 and 3, the exhaust pipe 1 from the cylinders 2 leads to an exhaust turbine 3 driving a furnace suction blower 4. The exhaust steam pipe 5 from the turbine 3 has two branches 7, 8 of which 7 leads to an aircooled condenser 9 and 8 leads to pipes 12 having nozzles 13. The air passing through the condenser 9 is heated thereby and mixes with steam from the nozzles 13, the mixture excaping to the open air through a passage 14. The passage of air through the condenser may be assisted by a fan driven by another exhaust turbine. In a modification, Fig. 4 (not shown), the furnace blower 4 discharges into the passage 14. In another modification, Fig. 5, the main exhaust pipe 1 leads into a chamber 17 from which part of the exhaust steam passes to the condenser 9 through the pipe 7. The remainder of the exhaust steam is discharged through nozzles from the chamber 17 and passes in succession through nozzles 18 in the smoke-box and nozzles 19 in the chamber 14, finally being discharged at the chimney 20 after mixing with and causing suction on the furnace gases and the condenser air.
Patent GB-175202-A (GB)
Title: Improvements in or relating to travellers' sample cases
IPC: G09F5/02
Filed: 1921-03-14
Abstract: 175,202. Bracher, C. R. March 14, 1921. Furniture with mechanically interconnected series of trays.-A traveller's sample-case comprises a pile of trays c connected by lazy-tongs d and secured to the bottom of a box a or to a tray f therein so that when extended they rest on and are supported by one edge of the lid b as shown.
Patent GB-566181-A (GB)
Title: Improvements in protective devices for high power transmission lines
IPC: H02H3/353
Filed: 1943-05-20
Abstract: 566,181. Protective arrangements. GENERAL ELECTRIC CO., Ltd., and FRIEDLANDER, E. May 20, 1943, No. 8015. [Class 38 (v)] A high-power transmission line R, Y, B of considerable length is protected against arcing- earths by individually earthing the conductor which is subject to the earth by by means of a , circuit-breaker 5R, 5Y or 5B, the operating coils 6R &c. of which are connected to contacts 4R &c. of voltage relays 3R &c., which are connected to the respective conductors and to earth and are arranged to lift with abovenormal voltage and to drop with subnormal voltage, the contacts being cross-connected in such a way that the appropriate coil, for example, 6R, will be energized when, and only when, the volts-to-earth of the conductor R falls, whereas that of the others rises above normal. Since the arc will usually be extinguished by such earthing, the breaker may open again after a time-delay ; alternatively, it may be looked closed subject to the current passing through it or after a predetermined number-of closures denoting a permanent fault. In a modification, Fig. 2 (not shown), each conductor may be connected by means of an isolating switch to a common bus-bar, which in turn is earthed over a circuit-breaker, the operating coil of which is energized by closure of any of the isolating switches. Appropriate interlocks prevent opening of the isolating switch unless the breaker is open. In both forms, an arc-extinguishing coil 2 may be provided.
Patent GB-974121-A (GB)
Title: Process for the manufacture of alkyl diesters of terephthalic and isophthalic acids
IPC: C07C69/80
Filed: 1961-03-06
Abstract: Diesters of terephthalic or isophthalic acid with at least one monohydric aliphatic alcohol containing 1-6 carbon atoms are prepared by heating the acid and alcohol at a temperature of 150-300 DEG C. in the presence of at least one metal salt, oxide or hydroxide and at least the same amount by weight, based on the acid, of a high molecular-weight polyester which has been obtained by the polycondensation of terephthalic or isophthalic acid and a glycol. In examples terephthalic acid is heated at 250-280 DEG C. with methanol or ethanol in the presence of polyethylene terephthalate and zinc acetate or sodium hydroxide, and isophthalic acid is heated at 280 DEG C. with n-butanol in the presence of polyethylene isophthalate and manganese acetate. Under the reaction conditions the polyester is said to depolymerize and the resulting acid, together with the free acid supplied, is esterified. Other specified catalysts are manganese orthophosphate, calcium acetate, aluminium chloride, sodium silicate, magnesium acetate, magnesium phosphate, lead oxide, magnesium oxide and alkaline-earth metal hydroxides. Specification 783,017 is referred to.
Patent GB-1356025-A (GB)
Title: Colouration process
IPC: D06P1/52
Filed: 1971-03-30
Abstract: 1356025 Dyeing with reactive dyes IMPERIAL CHEMICAL INDUSTRIES Ltd 24 Feb 1972 [30 March 1971 15 Dec 1971] 8161/71 and 58227/71 Heading D1B Textile materials capable of forming hydrogen bonds with amines are coloured by impregnating the material with a water-soluble or water dispersible poly (alkylene imine) of M.W. above 600 and subsequently (or in a modification along with) contacting the material with a fibre-reactive dye. Polyethylene- -and polypropylene-imines are specified of MW approx 60,000. The preferred reactive dyes contain chloro-s-triazine radicals and other reactive groups are specified. The textile materials include natural proteins, polyamides, polyesters, cellulose acetates, cotton, viscose rayon, linen, and the following unions, polyester-cotton, polyester-wool, synthetic polyamide-wool, polyamide-cellulose-triacetate, acrylic cotton, acrylic-viscose rayon, and acrylic-wool. Impregnation with the polyalkylene imine may be by padding squeezing out the excess and drying or by spraying, transfer roller or printing by roller, screen or block. The dye application may take place in absence of an acid-binding agent using continuous, semi-continuous or batch methods. In a modification the material is padded or printed with a water-in-oil-inwater emulsion having the dyestuff and the poly (alkylene imine) dissolved or dispersed in separate aqueous phases.
Patent GB-362283-A (GB)
Title: Improvements in or relating to coffee making apparatus
IPC: A47J31/44
Filed: 1931-03-17
Abstract: 362,283. Coffee infusers. CLARKE, R. A.. 50, Hawkesfield Road, Forest Hill, London. March 17, 1931, No. 8250. [Class 129.] An infuser of the type in which upper and lower vessels are supported by a stand, has the upright part 6 of the stand made hollow so that the upper vessel 2 may be held therein as shown by the dotted lines when not in use. The infusion is made by boiling water in the lower vessel 1 by a spirit lamp or the like placed in the recess 7a of the base 7 of the stand. The steam pressure forces the water into upper vessel 2 in which the coffee grounds are placed and the infusion drips back into the vessel 1 through a filter 14. A cylindrical vessel 8 is placed inside the hollow stand 6 to catch the drips from the vessel 2. A container 10 for methylated spirit may be housed in the lower part of the stand.
Patent GB-116741-A (GB)
Title: Improvements in connection with Rockets for Carrying Life-saving Lines, and for analogous purposes.
Inventor: SCHERMULY AUGUSTUS WILLIAM LOU
IPC: F42B12/68
Filed: 1917-06-11
Abstract: 116,741. Schermuly, A. W. L. June 11, 1917. Line-throwing apparatus.-In a line-throwing rocket, a T-shaped strip d, extending rearwards to form a tail stick, or a piece secured thereto, is provided with a hole for the attachment of a line f. The line is normally folded against, and partly housed in a loop or band carried by, the stick.
Patent GB-949697-A (GB)
Title: Crystal purification method and apparatus
IPC: C07C7/14
Filed: 1962-03-05
Abstract: <PICT:0949697/C3/1> A feed stream 9.8% paroxylene is cooled to the point of incipient freezing by heat exchange in 14 (-75 DEG F.) and freezing in chiller 10 (-84 DEG F.). A recycled stream at the same temperature of 30% paxylene is added by conduit 30 and both are fed to chiller 11 (-98 DEG F.). The filter cake is separated by rotary filter 15, melted and recrystallized in 16 and 12 respectively and the recovered crystals from purification column 18 contains 98% paraxylene while the recycled mother liquor in 29 contains 42.9%.  A similar process can be used to purify benzene, 2,2-dimethylpentane, 2,4-dimethylpentane, 2,2,3-trimethyl butane, methylcyclohexane 2,2,4-trimethyl pentane, cymenes, anthracene, phenanthracene and durene.
Patent GB-885219-A (GB)
Title: Improvements in or relating to friction drop hammers
IPC: B21J7/44
Filed: 1960-03-10
Abstract: 885,219. Drop hammers. MASSEY Ltd., B. & S., WELLS, L. W., and MIDDLETON, B. March 10, 1960, No. 8414/60. Class 83 (4). A friction drop hammer controlled by a pull cord 19, Fig. 2, which may be operated manually or by an air motor 10, has a pneumatic buffer 27, Fig. 3, incorporated in the air cylinder for cushioning the piston 14 at the top of its stroke. The hammer is a modification of the kind described in Specification 842,877, but the pull cord 19 passes through a separate parallel guide tube 16 instead of through the motor. A stop 20, adjustably clamped to the cord is engaged by a finger 21 carried by the lower end 151 of a piston rod 15, Fig. 3, secured to piston 14. The underside of this piston is open constantly to air pressure whereby it is biased upwardly, and air is admitted to its larger upper surface for lowering the piston and hence actuating the pull cord 19 to raise the tup. The piston stroke is terminated by a short or long stroke stop. On its upstroke an extension 29 of the piston 14 engages a buffer piston 27 working in an extension cylinder 25 and whose upper surface is open constantly to air pressure from pipe 26 through passages 252, 253.
Patent GB-1462943-A (GB)
Title: Process for continuous production of aqueous basic aluminium salt solution
IPC: C01F7/56
Filed: 1974-02-25
Abstract: 1462943 Aqueous basic aluminium salt SUMITOMO CHEMICAL CO Ltd 25 Feb 1974 [26 Feb 1973 (2)] 8460/74 Heading C1A In a continuous process for producing an aqueous basic aluminium salt solution, a slurry of aluminium hydroxide and/or alumina containing minerals together with hydrochloric or nitric acid is passed through a tubular reactor heated indirectly to at least the boiling point of the aqueous basic aluminium salt solution (ca. 120 C.) at such a flow rate that the slurry is not precipitated, and then passing the resulting slurry through a tubular holding vessel with an inner diameter larger than that of the reactor, being indirectly heated to at least the b.p. of the basic aluminium salt solution, at a flow rate lower than that in the reactor but above that at which the unreacted alumina particles in the slurry settle, thereby dissolving additional alumina contained in the slurry.
Patent GB-911342-A (GB)
Title: Improvements in or relating to thiosemicarbazone compounds and the manufacture thereof
Inventor: BARRETT PAUL ANTHONY
Filed: 1958-03-17
Abstract: The invention comprises compounds of the general formula: <FORM:0911342/IV (b)/1> wherein R1 is a C1-17 alkyl group, R2 and R3 may be the same or different and are C1-5 alkyl groups or R2R3N may be a piperidino or morpholino radical.  In the Provisional Specification the group R2R3N in the above general formula may be additionally a pyrrolidino, piperazino or 4-methyl piperazino radical and R1 may also be a phenyl group or a p-dimethylaminophenyl group. Bis - p - dimethylaminobenzophenone semicarbazone is specifically disclosed.  p-Dimethylaminopivalo-; -isobutyro-; isovalero-; and -caprophenones; p-diethylaminoproprio-; p-morpholino-aceto and p-piperidinoacetophenones are prepared from the appropriate amino benzene and aliphatic acid.  Specification 584,381 is referred to.