baber/WOPTO huggingface dataset:
Patent GB-1061973-A (GB)
Title: Plastics bags having self-sealing spouts
Inventor: O'CONNELL WILLIAM RALPH
IPC: B65D30/24
Filed: 1963-02-01
Abstract: 1,061,973. Valve bags. B.X. PLASTICS Ltd. Jan. 13, 1964 [Feb. 1, 1963], No. 4141/63. Heading B8K. A plastics valve bag 1 includes a valve 4, the thickness of the material of which is graduated from e.g. 11-20 thou. at 8 to about 1 thou. at 7, the valve being such that it can be pulled out manually to form a spout. The valve is formed by pushing a plug into a heated thermoplastic sheet and withdrawing the plug when the stretched sheet has cooled. The end of the formed shape is then cut open to produce the valve. The shoulder 5 of the valve is welded to the bag along at least two discontinuous weld lines, thus allowing air to escape from the bag between said lines. A support ring is employed during the welding operation after which the bag is sealed at 6. Alternatively, a longer spout valve may be employed and it may be welded to the bag along the weld 6, the weld being such that the valve can still be pulled out manually to form a spout. The valve may be coloured to facilitate location. Preferably, materials for the bag are listed in the Specification.
Patent GB-412678-A (GB)
Title: Improvements in and relating to thermionic amplifiers
IPC: H03F3/28
Filed: 1933-02-10
Abstract: 412,678. Valve amplifying-circuits. STANDARD RADIO RELAY SERVICES, Ltd., Bush House, Aldwych, and ADORJAN, P., 21, Wetherby Gardens, Earl's Court, both in London. Feb. 10,1933.No.4166. [Class 40 (v).] Two valves 1, 2, Fig. 1, operating in push-pull and at the bottom bend of their characteristics, have the input voltage divided between them proportionally to the inverse of the ratio of their mutual conductances, as by tappings from the grids to resistances 4, 5. In another embodiment, the lead from the grid bias battery 6, Fig. 3, is variably tapped onto a resistance 10 across the input, or the secondary of the transformer 3 may be tapped for connection to the battery 6, Fig. 4 (not shown). In a further embodiment, the secondary of the transformer 3, Fig. 2, is in two halves, each shunted by resistances 4, 5 to which the grids of valves 1, 2 are connected by tappings, while adjacent ends of the secondaries are variably connected to the grid bias source 6. The resistances 4, 5 may be dispensed with by tapping each half of the secondary winding, Fig. 5 (not shown).
Patent GB-662351-A (GB)
Title: Process for the production of polyvinyl alcohol
IPC: C08F8/12
Filed: 1949-02-16
Abstract: Polyvinyl alcohol is prepared by the alcoholysis with excess methanol of a solid, finely-divided polyvinyl ester of an unsubstituted lower aliphatic monocarboxylic acid, such as polyvinyl formate, acetate, propionate, or butyrate, under vigorous agitation in the presence of an alkaline catalyst, such as sodium or potassium hydroxide or alcoholate, and a liquid solvent modifier, such as oil of turpentine, petroleum fractions, and coal tar naphthas freed from benzene and toluene, which is at least partially miscible with methanol, and in which the polyvinyl alcohol is insoluble and the polyvinyl ester is not more than sparingly soluble; the volume ratio of methanol to liquid solvent modifier is within the range of 20 : 1 to 0.2 : 1, the ratio being such that the rate of solution of the polyvinyl ester in the mixture is less than the rate of alcoholysis.  The process is preferably carried out at room temperature, either batchwise or continuously, and the polyvinyl alcohol may be separated from the alcoholysis medium by filtration or centrifuging to provide a polyvinyl alcohol of low ester content which gives a clear solution when dissolved in water.  Specification 512,001 is referred to.
Patent GB-1025772-A (GB)
Title: Hydraulic pit prop
IPC: E21D15/44
Filed: 1963-02-01
Abstract: 1,025,772. Hydraulic pit props. B W G BERGWERK-UND WALZWERK-MASCHINENBAU G.m.b.H. Feb. 1, 1963 [Feb. 5, 1962], No. 4206/63. Heading E1E. An hydraulic pit prop has the control valves 7 in an annular collar 3 in communication with the pressure chamber 6 by annular passages 4 and bores 5. The collar 3 may be swivelled about the outer tube 1 by virtue of a circlip connection 11 and the cover for the valve chamber 7 may be a swivelling handle. In a second embodiment, the collar is positioned other than at the end of the tube 1. In both embodiments hydraulic seals 9, 10 of equal diameter relieve the collar from fluid pressure.
Patent GB-120331-A (GB)
Title: An Improved Draw-bar for use with Tractor-drawn Appliances.
Inventor: SCOTT JAMES
IPC: B60D1/07
Filed: 1918-03-11
Abstract: 120,331. Scott, J., and Duncan, A. March 11, 1918. Couplings for tractors. -A draw-bar for use with tractor-drawn appliances consists of resilient members 18 carrying at one end a pivoted hook 24, the shank 28 of the hook extending rearwardly and its end being retained by a roller 14 &c. in such way that upon an undue pull being put upon the hook the members 18 are extended, the shank 28 is released from the roller, &c., and a continued pull releases the hook from the shackle or link attached to the tractor. The resilient members 18 are two bow-springs, and the block 30 on the shank 28 is adjustable. To adapt the draw-bar for use with a one-man tractor and plough having a rigid draw-bar, the link 34 is pivoted to a shackle 36 coupled to the draw-bar of the tractor, and a retaining catch 40 takes under a cross-bar 42 formed between the arms of the link 34.
Patent GB-406470-A (GB)
Title: Control mechanism for a change-speed gear
IPC: F16H63/38
Filed: 1933-02-11
Abstract: 406,470. Variable speed gearing. STANDARD MOTOR CO., Ltd., and GRINHAM, E. G., Canley, Coventry. Feb. 11, 1933, No. 4248. [Class 80 (ii).] Each sliding striker-rod 11 of a variable-speed gear is spring-biassed to either operative position from neutral by means comprising a bell-crank lever 20, connected by a pin 14 with the rod 11 and biassed in either direction by a tensionspring 19, connected to a stationary point 18 so as to have a neutral position when it is collinear with the bell-crank pivot 16. The action of the lever 20 may be assisted by a wedge-ended spring- loaded locking-pin 21 acting on inclines 22 on the rod 11 on either side of a notch for neutral. The device is applicable to those change-speed gears in which the striker-rod moves a key engaging an inclined groove in a cone clutch member screw-threaded on the gear-shaft.
Patent GB-524900-A (GB)
Title: Improvements in or relating to fuel supply systems and to methods of supplying fuel gas
IPC: F17C7/04
Filed: 1939-02-10
Abstract: 524,900. Storing liquefied gases. AMERICAN GAS SERVICE CO. Feb. 10, 1939, No. 4416. Convention date, March 29, 1938. Drawings to Specification. [Class 8 (ii)] [Also in Group XXIX] An underground tank in which liquefied fuel gas is stored and vaporized by the warmth of the earth, for delivery to consumers' tanks, has a fibrous lining which by capillary action maintains a layer of the liquid in contact with the tank wall above the level of the body of liquid, and so increases the heading effect. The lining may be held in place by wire gauze. Specification 524,901 is referred to.
Patent GB-1006585-A (GB)
Title: Olefin polymer compositions
IPC: C08L23/02
Filed: 1963-02-04
Abstract: A crystalline polymer of an olefin (e.g. polypropylene) is stabilized with a hydroxybenzotriazole + a basic condensation polymer of epichlorhydrin with an amine or imine or of a dihalogen containing hydrocarbon with one or more amines.  Specified stabilizers are 21-hydroxy - 31 - t - butyl - 51 - methylphenyl-5 - chlorobenzotriazole, 21 - hydroxy - 51 - t - butyl - phenyl - 5 - chlorobenzotriazole, and the following condensates:-dichloroethane/hexamethylenediamine, octadecylamine/epichlorohydrin / piperazine, and octadecylamine/epichlorohydrin / hexamethylenediamine. Optional ingredients are calcium stearate, titanium dioxide and solvents used in forming the compositions.  The compositions may be after-treated with formaldehyde, diisocyanate, divinylbenzene, vinylacetylene or diepoxy compounds. The applications specified are filaments, fibres, film, staple, yarn, and tape. Specifications 555,971, 556,143, 894,478, 950,852 and 1,006,581 are referred to.
Patent GB-709317-A (GB)
Title: Improvements in tubulous vapour generating and superheating units
IPC: F22G7/14
Filed: 1952-02-20
Abstract: 709,317. Water-tube steam boilers; superheaters. BABCOCK & WILCOX, Ltd. Feb. 20, 1952 [Feb. 23, 1951], No. 4482/52. Class 123(2) In a steam boiler comprising a furnace chamber 1 lined with steam-generating tubes 2 and provided with a lateral gas outlet 10 at its upper end, a radiant superheater 11 in the form of upright tube panels is disposed at the side of the furnace chamber so as to extend transversely of the outlet 10 and adjacent a bank 6 of steam-generating tubes, the bank 6 also extending transversely of the said outlet and having tubes located downstream from the superheater 11 or/and between the panels of the latter. Preferably the upper end of the furnace chamber is reduced in depth by an arch which defines the bottom of a pass leading from the outlet 10 and housing a convection superheater section 8. Each superheater tube panel comprises front hair-pin tubes 14, extending between inlet and outlet headers 13, 16, and rear tubes 15 which lead from the header 16 and through the roof of the gas pass 10 to the outlet header of a superheater section 9 associated with the section 8, the header 13 being supplied with saturated steam from a drum 3 by tubes 12 passing to the rear of the said superheater section 8.
Patent GB-549109-A (GB)
Title: Improvements in and applicable to knitting machines and the production of fabric thereon
IPC: D04B35/04
Filed: 1941-04-04
Abstract: 549,109. Knitting. NEEDHAM, W. April 4, 1941, No. 4496. [Class 74 (ii)] A knitting-machine needle is provided with a cutting edge for severing the knitting yarn. The cutting edge may be formed at the front of the usual wide lower part 12 of the stem, or at the inclined portion where this lower part meets the narrower upper part 12 of the stem. Alternatively the cutting edge may be provided as at 14a or 14b in a cleft 14 in the stem. In another form a recess containing the cutting edge is adapted to be closed by a latch. The needles may be used in a circular machine for knitting a stocking blank by rotary knitting by varying the number of inoperative needles in a gap and cutting the float threads at each end of the gap. The needles serving to cut the yarn may be the two that at the time are functioning as selvedge needles or may be the needles adjacent thereto. The appropriate needles are selected and raised to engage a long raising cam which raises the needles so that the cutting edges are brought into operative position. The needles may be plural latch needles. Specifications 329,098, 330,041, [both in Class 74 (ii)], 500,230 and 537,965, are referred to.
Patent GB-252324-A (GB)
Title: Improvements in and relating to perambulators
IPC: B62B9/12
Filed: 1926-02-17
Abstract: 252,324. Steininger, L. May 25, 1925, [Convention date]. Perambulators. - A perambulator comprises two seats 3, Fig. 1, a centre portion 10, and a foldable attachment 8, 9, Fig. 11, for the hood, all detachably mounted on a wheeled underframe, the components serving other purposes when desired. The seats 3 are formed as armchairs, Fig. 5, with legs 4, and by the removal of one of the seats the perambulator is transformed into a single seater. The seats on removal may be used as children's chairs, or in combination with the centre portion 10, Fig. 7, may form a cot. The centre portion 10 when inverted may serve as a table, either in the perambulator or separate. therefrom. Drawers for food are provided.
Patent GB-769095-A (GB)
Title: Improvements in electrolysis of titanium tetrachloride
IPC: C25C3/28
Filed: 1954-02-18
Abstract: 769,095. Electrodeposition of titanium. SHAWINIGAN WATER & POWER CO. Feb. 18, 1954 [Sept. 22, 1953], No. 4742/54. Class 41. To relieve or prevent polarization during electrodeposition of titanium by electrolysis of titanium tetrachloride in a fused salt bath consisting of one or more of the chlorides of alkali metals or alkaline earth metals (including magnesium), there is maintained in the bath sufficient fluoride salt to give a combined fluorine content of 0.02 to 0.1 per cent by weight. The fluoride may be an alkali metal fluoride, calcium fluoride, potassium fluotitanate or cryolite and may be added to the bath either initially or on the occurrence of polarization.
Patent GB-372423-A (GB)
Title: Improvements in or relating to exhausting machines for use in exhausting cans and the like, charged with food or other materials
IPC: B67B3/24
Filed: 1931-02-14
Abstract: 372,423. Canning food &c. METAL BOX CO., Ltd., 28, Kingsway, London, and LOCK,.A., Providence Works, Worcester. Feb. 14, 1931, No. 4766. [Class 49.] Apparatus for exhausting air by heating from cans &c. charged with food or other materials comprises conveying means for the cans along which is disposed two lines of guiding means which carry the heating medium to apply heat about the sides of the cans. The apparatus consists, in one form, of a chamber 1 the bottom of which is inclined towards one end so that condensed steam can be withdrawn through a cock Ia. Guides 2 consisting of a pair of U-shaped steam pipes, 3, 4 ; 5, 6 are arranged to form an S-shaped path for the cans C which are carried therethrough by endless conveyers 8, 9, 10. The pipes are supported by bolts 30, Fig. 6, with distancepieces 31, from cross members 28, and may be arranged in the same horizontal plane or may undulate in a vertical plane to extend the area heated directly thereby, or they may be vertically displaced in relation to one another so that the heat is applied at different levels as the cans pass along. The pipes have apertures 7 along their sides and ends from which steam jets are directed on the cans C. Relative movement between the cans and the conveyers may be provided by roughening or serrating the surfaces of the pipes, or arranging the pipes to undulate horizontally or providing the pipes with steam nozzles which engage the cans and cause them to turn. The cans are fed to conveyer 8 which carries them into the chamber 1 between pipes 3, 5, the cans being transferred in turn by rotating fingers 13 to conveyer 9 from which they are removed finally by fingers 14 operated synchronously with fingers 13 to conveyor 10 from which the treated cans are discharged to a closuring apparatus. Means are described by which the conveyers 8, 9, 10 and the fingers 13, 14 are driven from a common power source. The steam supply to pipes 3, 4 is through a pipe 33 and to pipes 5, 6 through a pipe 34. To enable the pipes 3, 5 only to be heated when desired, a valve 37, Fig. 8, is provided for cutting off pipe 4 and a pipe 35 for connecting pipe 33 to a three-way valve 36 which enables pipe 5 to be connected to the steam supply through pipe 33 and to be shut off from pipe 6 from which steam is cut off by shutting a valve 34a. Specification 371,984, [Group XVII], is referred to.
Patent GB-1357412-A (GB)
Title: Coupling method and means for pipes tubes and the like
IPC: F16L15/08
Filed: 1971-02-16
Abstract: 1357412 Pipe couplings C I CHRISTOPHOROU 2 May 1972 [16 Feb 1971] 4776/71 Heading F2G A coupling, e.g. for an electric conduit, but which may be provided with a fluid-tight seal has a detachable sector 17, to allow engagement of the spigot end 16 in half socket 14, by transverse movement. To complete the screw thread 15, which may be tapered, sector 17 is positioned, on half socket 14, with tongue 18 in slot 19 and the nut 23 is screwed up to clamp the end of pipe 16. The coupling may be made of pressure die-cast zinc or brass. Instead of a single removable sector 17, two removable sectors of 120 degrees each may be provided. The split socket arrangement may form the connections on elbow and T-junctions.
Patent GB-390611-A (GB)
Title: Improvements in devices or means for preventing dazzling effects due to motor-car head-lamps and the like
IPC: F21S8/10
Filed: 1932-07-29
Abstract: 390,611. Vehicle antidazzle screens ; lighting systems ; spectacles. UNDERWOOD, E. N., 121, St. Peter's Street, Derby. July 29, 1932, No. 4797. [Class 103 (ii).] For protecting vehicle drivers from dazzle by the headlights of approaching vehicles, the lamp lenses and windscreens are constructed of a number of layers of transparent material, the surfaces of which are inclined at the angle of polarization to the surface of the lens or screen as a whole, the lamp lens serving as a polarizer and the windscreen as an analyser. In constructing the lens or screen a number of layers f of glass, celluloid or other selected transparent material united by cement g are cut at the polarizing angle y into layers h of suitable thickness and, if desired, mounted between two plane sheets of glass. When the lens is mounted in the lamp the reflected rays serve to illuminate the side of the road, while the refracted rays are projected forward, to be rejected by the windscreen of an approaching vehicle. Rear windows and driving mirrors may be similarly constructed to prevent dazzle by lights at the rear of a vehicle. The plane of polarization is preferably arranged at 45‹ to the vertical. Spectacles for pedestrians or other road users may be provided with lenses built up in a similar manner.
Patent GB-1195335-A (GB)
Title: Magnetic Material
Inventor: WRIGHT ARCHIBALD NELSON
IPC: H01F1/09
Filed: 1968-01-30
Abstract: 1,195,335. Polymerization on to magnetic particles. GENERAL ELECTRIC CO. 30 Jan. 1968 [20 Feb., 1967], No. 4820/68. Heading C3P. [Also in Division H1] Magnetic particles are coated with a polymer by U.V. polymerization of a gaseous monomer. The monomer may be 1,3-butadiene, methyl methacrylate, acrylonitrile, hexachlorobutadiene, hexafluorobutadiene, tetrafluoroethylene, trifluoromonochloroethylene, monofluorotrichloroethylene, or hexafluoropropylene. The magnetic particles may be of Fe, a Co/Fe alloy with an atomic ratio up to 3/1, or a Co/Fe alloy core with a Co/Fe oxide coating. The particles may be held in an agitated Al tray on a cooled Cu support block in a quartz tube.
Patent GB-1027131-A (GB)
Title: Tractive mechanism
Inventor: BENSENEV VALENTIN SAVELJEVICH
IPC: B61C15/04
Filed: 1964-02-05
Abstract: 1,027,131. Locomotives; brake arrangement. LENINGRADSKY GORNY INSTITUTE IMENI G.V. PLEKHANOVA. Feb. 5, 1964, No. 4835/64. Headings B7H and B7L. A traction mechanism comprises a pair of driving wheels 1 gripping opposite sides of a rail or traction element 2 and each mounted on a floating lever pivoted at each end at 12 to an arm 6 of a bell-crank 5 which is pivoted at its vertex 56 to a yoke straddling rail 2 and at the end of its other arm to a resilient link 8 connected to a locomotive or other frame. In operation leading web 72 of each lever engages one of the bell-cranks and due to the action of the trailing bell-cranks the radial force of the wheels on the rail is proportional to the tractive load. The pivots 12 are adjustable for wear in the wheel tyres 27 and rail 2 by means of bolts 59 in the levers and each wheel is driven from an electric motor mounted on the lever or frame through shafts 54, 32, pinion 31 and gearwheel 29 mounted on the wheel. A hydraulic drum brake is mounted on shaft 32.
Patent GB-378800-A (GB)
Title: Improvements in and connected with apparatus for playing a game
IPC: A63D13/00
Filed: 1932-02-18
Abstract: 378,800. Games. GIBBINS, C. D., (trading as BRITISH & CONTINENTAL AUTOMATICS), 143, Boothferry Road, Hull. Feb. 18, 1932, No. 4857. [Class 132 (ii).] Apparatus for playing a game comprises a board 1 having a ramp 5 at the rear end and a device such as a spring gun 7 at the front for projecting a coin along the board and up the ramp into one of a number of apertures 3 in a vertical panel 2 which is separated by a gap 26 from the ramp 5. The apertures 3 lead into chutes 14 which are provided at their lower ends with electric contacts which are bridged by the coin when it falls and completes a circuit to light a lamp and ring a bell &c. The lamps 13 may be situated behind windows 12 in the panel. The chutes 14 are made of metal and terminate at their lower ends near electric conductors 17 the gap between them being bridged by a coin entering one of the apertures 3, as shown in Fig. 4. The conductors 17 may be in the form of a bar pivoted at 22 and provided with a handle 23 and kept in position near the chutes by a spring 24. Alternatively a separate bar may be provided for each chute. Coins which fail to jump the gap 26 fall into a drawer 27 into which coins which have entered the shoots can also be passed by pressing the handle 23. The inclination of the ramp 5 which is of flexible sheet material can be varied by means of hinged uprights 32 and rods 37.
Patent GB-222036-A (GB)
Title: Improvements in or relating to boot and shoe cleaning machines
IPC: A47L23/02
Filed: 1924-02-26
Abstract: 222,036. Choat, F. W. Feb. 26, 1924. Boots and shoes, clening and polishing. - A frame G shown in plan in Fig. 1 carries two cylindrical brushes A adapted to rotate and move apart as the boot &c., while on the foot of the wearer, is inserted between them, a fixed brush C for the toe, a grid scraper B, a bar scraper D, and an upright handle F to enable the user to steady himself. The brushes A are fully mounted upon tubular axles a<5>, which are slidable in horizontal slots a in end brackets a<1>, and pressed towards each other by springs a<7>. One of the end brackets a<1> is adjustably mounted by bolts a<3> in slots a<2> in the frame so that the brushes may be set closer together when they have become worn. To enable dirt readily to escape from the brushes A, they are formed of spaced helical or circular strips of bristles.
Patent GB-975714-A (GB)
Title: Production of cyanuric acid
Filed: 1962-02-08
Abstract: Cyanuric acid is prepared by heating to above 140 DEG  C. a dispersion of urea in an inert diluent liquid comprising a compound chosen from: mononitrobenzene, the monohalomononitrobenzenes and the dihalomonitrogenzenes, in which urea and cyanuric acid are substantially insoluble and which has a melting-point below 132.7 DEG  C.  The heating may be effected at 140-240 DEG  C.  An acidic catalyst preferably an acidic salt or acidic halide, may be added in amount 0.5-20% of the weight of urea. Catalysts specified are: H2SO4, H3PO4, HCl HBr, citric and acetic acids and the salts of these acids, also water-soluble acidic halides, e.g. NH4Cl, NH4Br, CO(NH2)2, HCl, CO(NH2)2 HBr and ZnCl2, AlCl3, SnCl4 and the corresponding linamide, iodide and fluoride salts. The urea may be continuously dispersed in the liquid with agitation, preferably after mixing with the catalyst. The rate of addition is such that the urea catalyst mixture does not exceed 75% of the total contents in the reaction zone. A portion of the reaction mixture is continuously withdrawn and the cyanuric acid separated by filtration, decantation or centrifugation, washed with acid and dried.  In the examples, the diluents and catalysts are (1) and (3) nitrobenzene and NH4Cl; (2) nitrobenzene and NH4Br respectively.
Patent GB-575406-A (GB)
Title: Improvements in and relating to soaps and non-soapy detergents
IPC: C11D9/44
Filed: 1944-03-17
Abstract: 575,406. Soap and non-soapy detergent tablets. LEVER BROS. & UNILEVER, Ltd., and TAINSH, P. W. March 17, 1944, No. 4984. [Class 91] Non-transparent coloured soap or non-soapy detergent tablets contain, in addition to the usual colouring matter, a small proportion of a bluefluorescent substance. The latter specified comprise compounds of the coumarin group, particularly hydroxy coumarins such as umbelliferone, #-methyl umbelliferone and the sodium salt of umbelliferone-4-acetic acid. The non-soapy detergents specified comprise sulphonated or sulphated high molecular fatty compounds such as higher alkyl sulphonates and sulphates, and fatty acid esters of isethionic acid. The bluefluorescent substances may be added in the form of a solution or suspension in water with or without the addition thereto of a small amount of an alkaline compound such as borax or sodium carbonate to facilitate solution of the bluefluorescent substances.