baber/WOPTO huggingface dataset:
Patent GB-1070843-A (GB)
Title: Improvements in fluid filters
IPC: B01D29/00
Filed: 1964-05-22
Abstract: A filter bag is formed of two sheets (6) of porous material arranged face to face with the marginal portions of each sheet along two opposite edges folded over so as to lie between the sheets and with the folded-over portions of one sheet fastened to the corresponding folded-over portions of the other, as by means of lines of stitching (8), the bag being subdivided into a plurality of smaller bags, as by means of lines of stitching (9) parallel to the other lines of stitching (8).  A plurality of such bags (4) are secured to a frame (3) forming part of a fluid filter unit (2), each of the smaller bags being situated with its mouth behind an opening (5) in the frame (3). A method of forming such a bag is to stack a pair of porous sheets (6), stitch them together along lines neighbouring two opposite edges and then turn the bag inside-out.  The two sheets (6) must be fastened transversely to each other at one end either before or after the bag is turned inside-out, or the two sheets may be produced from a single sheet folded over.  The porous sheets are preferably of non-woven glass fibre and it is advisable to provide them with some surface protection, e.g. by giving each sheet a facing of scrim.
Patent GB-597546-A (GB)
Title: Improvements in and relating to steel mine supporting arches
IPC: E21D11/28
Filed: 1945-08-22
Abstract: 597,546. Mine-supporting arches. JOHN, E. T. Aug. 22, 1945, No. 21487. [Class 20 (ii) ] To enable steel mine arches to be connected in parallel relation, each arch has secured thereto a number of lugs so that tie-rods may be engaged therewith without the weakening of the arch by holes for tierod securing-members. The beams 10 of the arches may be of H-section and lugs 11, Fig. 2, may be welded to the flanges and web, the lugs 11 being apertured to receive the bent-over ends of the tie-rods 12. The lugs may be of angle section, one flange of the angle being welded or riveted to the arch. The lugs may be spaced from the web of the arch members, so that the bent-over ends of tie-bars may be engaged between the lugs and the arch members. In a further modification members 41, Fig. 7, with eyed ends for the reception of the tie-rods, may be welded to the inside flange of the arch members. The tie-rods may extend horizontally or diagonally between the corresponding members of the arches.
Patent GB-1223343-A (GB)
Title: Coating compositions
Inventor: ARMOUR ALBERT GEORGE
IPC: C08F2/08
Filed: 1968-05-07
Abstract: 1,223,343. Graft copolymers. E. I. DU PONT DE NEMOURS & CO. 7 May, 1968, No. 21496/68. Addition to 1,101,983. Headings C3G and C3P. [Also in Division B2] A graft copolymer comprises (a) a backbone component, insoluble in an organic liquid, which is a copolymer of at least one mono-olefinically unsaturated monomer and from 0À5 to 20% by weight of a monomer which provides grafting sites by abstraction of hydrogen or opening of a double bond and (b) a graft component, soluble in the same organic liquid as in (a), which is a polymer or copolymer of mono-olefinically unsaturated monomers. Suitable backbone polymers (a) are copolymers of 0À5 to 20% of allyl methacrylate, diethylaminoethyl methacrylate, tetrahydrofurfuryl methacrylate, isopropyl styrene or aminoethyl vinyl ether with an acrylic acid, amide, nitrile or ester, maleic anhydride, fumaric acid and esters thereof, styrene, alpha-methyl styrene, vinyl ethers, vinyl toluene, vinyl esters, vinyl halides, vinylidene halides, 3 - (beta - methacryloxyethyl)- 2,2 - spirocyclohexyloxazolidine or glycidyl methacrylate. Specified graft monomers (b) are 2-ethylhexyl acrylate, butyl, lauryl and stearyl methacrylates and vinyl esters. The graft copolymers are used as stabilizers in the production of dispersions of film-forming polymers, e.g. of acrylic and methacrylic amides, esters and nitriles, maleic anhydride, maleic and fumaric esters, styrene, methyl styrenes, vinyl acetate, vinyl butyrate, vinyl ethers and vinyl and vinylidene halides, provided that when the film forming polymer comprises an ester of a vinyl carboxylic acid the backbone comprises no such ester and vice versa; backbone component (a) being compatible with the film-forming polymer and soluble in or swollen by the monomer(s) from which the polymer is prepared. The dispersions produced are mixed with pigments, coalescing agents and plasticizers, e.g. glycol ethers and ether esters, and butyl benzyl phthalate and di(methyl cyclohexyl)phthalate.
Patent GB-627928-A (GB)
Title: Nitrogen-containing derivatives of tetrahydrocardanol
Filed: 1947-08-07
Abstract: Trinitro derivatives of tetrahydrocardanol (3-pentadecylphenol) may be combined with petroleum oils or fractions thereof (e.g. petrol and the fuel oils) to improve them for their intended purposes. Specification 627,927 is referred to.ALSO:Trinitro derivatives of tetrahydrocardanol (3-pentadecylphenol) are manufactured by the nitration of sulphonated tetrahydrocardanol (preferably the disulphonic acid derivative), obtainable by heating tetrahydrocardanol with concentrated sulphuric acid.  The nitration, in the course of which the sulphonic acid groups are replaced by nitro groups, is advantageously effected in the presence of a solvent, using fuming nitric acid, if desired, with the addition of concentrated sulphuric acid.  The products are useful as fast burning propellants, as explosives, as therapeutic agents, and as additions to petroleum oils or fractions thereof.  In an example, tetrahydrocardanol is treated with concentrated sulphuric acid at 100 DEG  C. and the product is dissolved in dioxane and treated with fuming nitric acid and concentrated sulphuric acid. Specification 627,927 is referred to.
Patent GB-302563-A (GB)
Title: Improvements in or relating to garden rollers
IPC: A01B29/02
Filed: 1928-07-24
Abstract: 302,563. Scoffin & Willmott, Ltd., and Scoffin, S. A. July 24, 1928. Rollers, garden.-A roller having an unbalanced handle is provided with one or more supports pivotally attached to the handle so as to swing to that side to which the handle is pulled to keep it off the ground when the roller is out of use. The support a is pivoted to the handle x at the end of the roller. It may be provided with a D- or T- shaped or ether foot and may be used as an auxiliary pulling handle. The handle x may be formed with a bend or elbow c at or near the upper end of the support a to bring the support near the end of the roller. The support may be pivoted on the outer part of the elbow and may be bent inwardly to fit it. A stop may be provided to prevent excessive swinging.
Patent GB-206577-A (GB)
Title: Time controlled feed hopper for animals
IPC: A01K5/02
Filed: 1922-08-08
Abstract: 206,577. McCarthy, P., Dease, D. B., and Buchholz, P. Aug. 8, 1922. Alarm and like mechanism. - A time-controlled feeding-appliance for animals comprises an alarm clock mechanism which, at a predetermined time, releases the doors n of food-con. tainers n<1>, n<2>. The timing-apparatus consists of an hour-wheel a<2>, Fig. 4, turning on a stud a, Fig. 3, and having frictionally connected thereto a clock-face c and one or more hands b<1>, b<2>. The clock face is so set that a fixed pointer c<6> indicates the correct time. The hands b<1>, b<2> move with the clock face and are set at the hours at which food is to be released. At the given hour a pin c<2> on the hand b<2> moves an arm c<3> and turns a spindle c<4> carrying a projection d that moves a lever d<1>. The curved arm of this lever engages a member e<2> and turns a spindle e that carries an arm to release the wheel j<2> on the spindle d<3> which is connected to the shaft m<1>, Fig. 1. The spindle c<4> may carry the arm which releases the wheel j<2>, the intermediate mechanism being dispensed with.
Patent GB-309855-A (GB)
Title: Process for the manufacture of highly activated adsorptive carbons
IPC: C01B32/384
Filed: 1928-07-25
Abstract: 309,855. Naamlooze Vennootschap Norit-Vereeniging Verkoop Centrale. April 16, 1928, [Convention date]. Carbon.-Active or decolorizing carbon in the form of agglomerates is obtained by the comminution, agglomeration and activation of the raw material, the agglomerates so obtained being impregnated with activating chemicals and then ignited. The agglomeration may precede or follotv the primary activation, which may be effected by using steam or other gases. The chemicals used include phosphoric, nitric., sulphuric and hydrochloric acids and their salts, and carbonates, hydroxides and sulphides. Salts of the alkali, alkaline earth. or heavy metals or of ammonium may be employed, iron, zinc, or aluminium salts being included. After the ignition the non-volatile chemicals are removed by washing. The materials may also be extracted, e.g. with hydrochloric acid, and washed with water prior to the impregnation. Increased hardness may be obtained by impregnation with hardening agents. The hardness and density may be varied by controlling the grinding and the pressure employed in agglomeration. Specification 291,725 is referred to. The Specification as open to inspection under Sect. 91 (3) (a) comprises also the impregnation of peat charcoal, brown coal, anthracite or chaircoal prepared from coconut or other fruit shells or hard or other woods in fragmentary or other form with activating, oxidizing, purifying, extracting &c. chemical, the materialbeing then subjected to a burning operation. This subjectmatter does not appear in the Specification as accepted.
Patent GB-635591-A (GB)
Title: Process and apparatus for the clarification of liquids
IPC: B65D5/46
Filed: 1947-08-07
Abstract: 635,591. Clarifying liquids by gravity-separation. MIRRLEES WATSON CO., Ltd. Aug. 7, 1947, No. 21579. Convention date, May 17, 1946. [Class 46] Solid suspended matter is removed from a liquid in apparatus comprising a tank 10, Fig. 1, provided with several steeply-inclined conical members 16 secured to a central apertured pipe 18. The base of the tank is conical and is provided with rotary radial arms 571 carrying scrapers 591. Liquid to be clarified is fed to a perforated circular launder 14, the clear liquid is discharged through the pipe 18, and the solid material is discharged through a pipe 12. In a modification shown in Fig. 5, the tank 32 contains a number of settling units each consisting of several conical members 33 secured to an apertured pipe 39. The pipes 39 deliver the clarified liquid separately to a tank 42. The tank 32 at the bottom has a rotary shaft 48, which carries radial arms 54 having alternately depending chains 55 and paddles 56, and also carries upwardly-inclined radial arms 57 provided with chains 59 which scrape the surface of fixed trays 47. In a modification each of the radial arms 54 carries both chains and paddles. Specifications 29581/10, [Class 46], and 427,013 are referred to.
Patent GB-595316-A (GB)
Title: Improvements in or relating to a method of plastering and compositions therefor
IPC: B05D1/02
Filed: 1944-11-03
Abstract: A dry composition suitable, when mixed with water, for spraying, comprises a finely-divided hemihydrate or lightly-burnt hemihydrate calcium sulphate (i.e., one which shows a loss in weight of at least 5 per cent. when ignited over a bunsen burner), intimately mixed with 0.5-10 per cent. of its weight of animal and/or fish glue, preferably a cold-water soluble glue.  An inert auxiliary ingredient, such as a white, coloured, or metallic pigment, an extender, e.g., barytes, whiting, or an argillaceous or siliceous material, a bactericide, a fungicide, a wetting or a defoaming agent, or a mixture thereof may also be included.  The powdered calcium sulphate and glue, with or without auxiliary ingredients, may first be intimately mixed and the water added subsequently, or the glue and auxiliary ingredients may be mixed and supplied for mixing with the requisite amount of plaster, or the glue may be added to a mixture of plaster and other ingredients in the form of a solution in sufficient water to produce a sprayable mix.
Patent GB-1122469-A (GB)
Title: Billet piercing and extrusion
IPC: B21C23/00
Filed: 1966-05-16
Abstract: 1,122,469. Extruding; billet piercing. REYNOLDS METALS CO. 16 May, 1966 [17 May, 1965], No. 21591/66. Heading B3P. An extrusion press for forming tubes has a billet piercing mandrel 38, Fig. 4, detachably mounted on the front of the extrusion ram 10. A solid billet 36, Fig. 1 (not shown), is placed in a container 14 whose forward end is then closed by a die 18. A dummy block 34 having a part-tapered bore 35 is placed behind the billet and engaged by a complementary shaped centering projection 24 fitting in a transverse slot (30) in a detachable head portion 12 of the ram 10, Figs. 1-3 (not shown), which also has a centring land 13. The ram first upsets the billet within the container and is then withdrawn bearing the dummy-block adhering to the billet. Projection 24 is then removed and replaced in the slot (30) by piercing mandrel 38, which is moved forwardly through the bore 35 in the dummy block to centre the mandrel whilst it pierces through the billet. Thereafter the billet is extruded between the mandrel and die to form a tube 40, Fig. 5 (not shown).
Patent GB-761137-A (GB)
Title: Machine and method for producing a laminated corner-bead
Inventor: BOLDRIN FRANK S
IPC: B21D5/08
Filed: 1953-08-05
Abstract: 761,137. Laminated materials. DUNLAP, A. H. Aug. 5, 1953, No. 21601/53. Class 140. Lengths of corner bead composed of a transversely-bent metal or plastic core strip having a flexible tape such as paper bonded thereto are made by continuously advancing flat stock materials for the core strip and the tape along guided travel paths which merge, deforming the metal or plastic strip to the requisite shape before its path merges with that of the tape, bonding the core strip and tape together, thereby forming the corner bead, and cutting the corner bead into lengths. As shown, a strip of paper T, Fig. 1, from a reel 31 is passed through a cleaning box 67 where surface lint scraped off by bowed spring metal leaves is withdrawn by suction, under a device 58 which applies adhesive from a rotating tubular nozzle to a restricted, e.g. central, zone of the paper, and, if desired, or necessary, through a drying oven 115 where the adhesive is'heated by infra-red lamps 116. The metal strip is unwound from a reel 30 and, after passing over guide rolls 35, 36, and 37, is passed through a driven set of rolls 38 which progressively deform the strip into a V cross-section with the ridge at the bottom. The deformed strip is fed along a trough 40, in which it is maintained by free-turning guide rollers 41, and is brought into contact at roll 127 with the adhesive-coated paper strip, guides being provided to ensure correct alignment. The two strips are united by pressing first between a roller 130, Fig. 8, bevelled to fit the trough in the metal strip and a cylindrical roller 136 with a shallow central V-groove taking only the apical portion of the core strip, and then between rollers 131 and 132 similarly shaped to roller 130 and pairs of rollers 144 inclined at 45 degrees. The composite strip is cut into predetermined lengths by a blade 172 actuated by a solenoid 183 when the front end of the composite strip touches a trigger which operates a micro-switch controlling the solenoid. In order to counteract shrinkage of the paper tape as the adhesive dries, the composite strip is bent slightly upwards after leaving the pressure rolls, by passing between a pair of guide rolls 156 inclined at 45 degrees and a ball-shaped foot 157. A lever 50, Fig. 1, one end of which rides on the reel 31, causes an electric bell 53 to ring when the tape on the reel nears depletion.
Patent GB-864286-A (GB)
Title: Axial piston pump with high pressure oil fed thrust bearing
IPC: F01B3/00
Filed: 1959-06-24
Abstract: 864,286. Liquid pressure engines. THOMA, J. U. June 24, 1959 [June 24, 1958], No. 21631/59. Class 69 (2). [Also in Group XXVIII] The bearing surfaces between a relatively rotating cylinder block 1 and valve plate 4 are lubricated by liquid fed from the cylinder by passages 7. The opening of the passages 7 in the cylinder walls are so positioned that they are covered by the piston during at least a part of their stroke and the liquid forced into the passages between the piston and cylinder is thus filtered. The passages may open into a groove provided in the cylinder wall and preferably lead from a point on the cylinder wall nearer to the axis of rotation of the block than the furthest possible position. The valve plate is provided with grooves 9 to receive the liquid and the cylinder block may be provided with a groove where the passage 7 ends.
Patent GB-320932-A (GB)
Title: Improvements relating to steam heating apparatus
IPC: G05D23/02
Filed: 1928-07-26
Abstract: 320,932. Cloud, J. W., and Westing- house Brake & Saxby Signal Co., Ltd. July 26, 1928. Radiators.-In a thermostatic regulator 2 attached to a steam heated radiator 1, an inner tubular member 3 is mounted in a threaded adjustable plug 4, and its lower end carries the steam inlet valve 6. The position of the valve is determined by the relative expansion of the tube 3 and casing 9. An open ended tube 10 is arranged in the tube. 3 to cause a circulation of air through the tube 3 so that the air in the tube 3 conforms more closely to atmospheric conditions Alternatively, a passage between the lower end of the tube 3 and the atmosphere may be provided.
Patent GB-781666-A (GB)
Title: Improvements relating to transistor amplifiers
IPC: H03F1/30
Filed: 1955-07-27
Abstract: 781,666. Transistor amplifying stabilizing circuits. GENERAL ELECTRIC CO. July 27, 1955 [July 27, 1954], No. 21723/55. Class 40 (6). In a temperature-compensated amplifier, a network 34 having a resistance which varies with current and temperature is included in the emitter circuit of transistor 28 to maintain the output current more nearly constant. The network comprises a component 44 insensitive to temperature variations and a non-linear component 36 responsive to temperature variations. Assuming an increase in the ambient temperature there will be an increase in the collector current of input transistor 10 so that the base potential of transistor 28 is raised, thereby tending to diminish the emitter current. This effect is offset by a fall in the effective emitter resistance of network 34 so that the collector current remains substantially unchanged. It is stated that the resistance of network 34 should vary according to the equation R=A/I 0 +B/T+CI 0 , where T is the temperature, A, B and C are constants, and I 0  is the collector current of transistor 28 with no input applied to transistor 10. The emitter and collector connections of the transistor in network 34 may be reversed and resistor 44 may be omitted if less complete compensation is adequate.
Patent GB-1304303-A (GB)
IPC: A61K31/165
Filed: 1971-04-19
Abstract: 1304303 Benzamide derivatives RECHERCHES PHARMACEUTIQUE ET SCIENTIFIQUES and OMNIUM CHIMIQUE 19 April 1971 [13 Feb 1970 14 Jan 1971] 21745/71 Heading C2C Novel benzamide derivatives of the formula wherein Z is tert. butylamino, isopropylamino, dimethylaminoethylamino or morpholino, and their acid addition salts with pharmaceutically acceptable organic or mineral acids and their optically active isomers are prepared by amines of the formula HZ with o-, m- or p-(2,3-epoxypropoxy)benzamide, and, if desired, resolving the racemic bases thus obtained, and/or converting them into acid addition salts. o-, m- and p-(2,3-Epoxypropoxy)benzamides are obtained by reacting epichlorohydrin with o-, m- and p-hydroxybenzoic acid. Pharmaceutical compositions, suitable for oral, parenteral or rectal administration, contain the above novel compounds or their acid addition salts together with suitable carriers or diluents. The compounds have # adrenergic blocking activity.
Patent GB-847530-A (GB)
Title: Electrical circuit element, and its applications
Inventor: WILLIAMSON JOHN BRIAN PETER
IPC: H01H85/046
Filed: 1957-07-10
Abstract: 847,530. Semiconductor circuits. T.I. (GROUP SERVICES) Ltd. July 8, 1958 [July 10, 1957; Aug. 15, 1957; Dec. 23, 1957; May 1, 1958], Nos. 21815/57, 25753/57, 39824/57 and 13860/58. Class 40(6). [Also in Group XXXVI] An electric circuit element which, due to its physical shape, resistance-temperature coefficient, and thermal conductivity-temperature coefficient, has an electric current-potential difference characteristic having a region of zero or negative slope, may be used in circuits for amplifiers, oscillators, constant current sources, adders, gates, storage devices and mixers. Fig. 23 shows such an element, X, called a constrictor in the Specification, used as an amplifier, the battery B biasing the constrictor to the negative part of its characteristic. Fig. 25 shows the series connection of two similar amplifiers using transformer coupling. Fig 26 shows an oscillator circuit using the constrictor X in parallel with a turned circuit L.C.R. fed from a battery through a choke H. Fig. 27 shows a constrictor, having a characteristic with a region of zero slope, used as a constant current device to feed a load Z. Fig. 29 shows an adding circuit or coincidence gate using two constrictors with a flat region in their characteristics so that the current through each constrictor is independent of the current through the other. Fig. 30 shows a storage device using two constrictors having characteristics as shown in Fig. 7 giving a composite characteristic as shown in Fig. 31 showing that the voltage at junction A in Fig. 30 has 3 possible values of which the positions Y are stable, the potential remaining at one of these states until switched to the other by an externally applied current or voltage pulse. Similarly using constrictors having characteristics as shown in Fig. 10 a storage device with three stable states may be obtained.
Patent GB-1224776-A (GB)
Title: Humidifier
IPC: F24F6/06
Filed: 1968-05-09
Abstract: 1,224,776. Air humidifier. DEFENSOR A.G. 9 May, 1968 [17 May, 1967], No. 22025/68. Heading B1R. An air humidifier comprises a casing with side walls which admit air and which is divided into two compartments by a partition 20 extending into the water in a reservoir in the bottom of the casing, one compartment containing an open-ended perforate drum 44 secured on and rotated with a horizontal shaft (42) (Fig. 4, not shown) and covered by a porous layer 46 through which air to be humidified is drawn by two impellers 24 mounted within the drum expelled through spiral casings 22 and an opening in the partition 20 and through an outlet duct extending through the other compartment. The end of the drum adjacent the partition carries a sealing lip abutting the partition and the other end of the drum is closed by a disc (62) (Fig. 4). The porous layer may be polyurethane foam. Operation of the humidifier may be controlled by a hygrometer 52 responsive to the humidity of an air stream drawn through a chamber 50. An air heater may be provided near the air outlet.