baber/WOPTO huggingface dataset:
Patent GB-355747-A (GB)
Title: Improvements in or relating to electric current transformers
IPC: H01F27/42
Filed: 1930-05-28
Abstract: 355,747. Current transformers. REYROLLE & CO., Ltd., A., Hebburn-on-Tyne, and BAYLES, J. W., 12, Neale Street, Fulwell, Sunderland. May 28, 1930, No. 16515. [Class 38 (ii).] In a current transformer arrangement comprising a main transformer and an auxiliary transformer energized from the same primary current, the secondaries are connected through a controlling impedance, preferably of low power factor, so that a circulating current is supplied from the auxiliary transformer to the main transformer to effect a compensation in the main transformer for ratio and phase-angle errors. The secondary windings A2, B2, Fig. 1, of the main and auxiliary transformers A, B are connected across loads D, E, respectively, which are. connected through a controlling impedance F. The impedance of F is high compared with the impedance of the loads D, E so that a circulating current which leads the primary current by a large angle is supplied from the secondary winding B<2> to the secondary circuit of the main .transformer. This divides into two components one of which passes through the secondary winding A2, the other flows through the load D. The controlling impedance F is provided with a closed iron magnetic circuit arranged to operate at a low flux density and has a small resistance and a comparatively large reactance so that the impedance varies approximately in accordance with the permeability of the core. In a modification shown in Fig. 5 the transformers have additional windings A3, B3 which are connected through the impedance F so that the circulating current only affects the magnetization. In another modification shown in Fig. 6 the connection through F is to a centre tap of the winding A<2>, an impedance G equal in value to D is included in the other branch of the secondary circuit of the rear transformer so that the circulating current divides equally and produces no magnetizing effect on the winding A<2> but still allows correction current to flow through the load D. One form of controlling impedance F, Fig. 7, comprises a winding F<1> embedded in a hollow iron core H and arranged so that the flux circulates in a radial plane. The load E for the auxiliary transformer is wound on the annular core H which is gapped at H<2>; the load D is the instrument &c. that is being supplied. In another form shown in Fig. 9 the core of the auxiliary transformer is formed with a hole B<4> and the impedance F<1> is wound so that it passes through B<4> and round the outside of the core. Specifications 169,093, 259,198, and 286,431, [all in Class 38 (ii), Electric currents, Converting &c.], are referred to.
Patent GB-676575-A (GB)
Title: Improvements in or relating to the production of anthracene, phenanthrene and carbazole
IPC: C07D209/84
Filed: 1950-07-03
Abstract: A mixture of anthracene, phenanthrene, and carbazole in solution in a water-immiscible solvent, e.g. benzene or toluene, is treated with an excess of 80-90 per cent sulphuric acid and intensively stirred to give a precipitate of sulphuric acid-containing carbazole sulphate which adheres to the wall and bottom of the reactor, the solution being discharged and anthracene and phenanthrene recovered therefrom while carbazole is obtained by decomposing the precipitate with water, e.g. as described in Specification 676,576.  The total amount of acid is preferably added at once at about 20-30 DEG  C., and stirring continued for 30 minutes.  The solution may be decanted and further amounts of crude anthracene solution treated in the same reactor.  The accumulated precipitate is treated in known manner. The solution may be washed to remove acid, anthracene and phenanthrene then being recovered as by crystallization.  The initial crude solution may be given a preliminary washing as with 65-75 per cent sulphuric acid.  A crude anthracene solution saturated at say 50-60 DEG  C. may be used which on cooling to the reaction temperature becomes practically saturated with respect to anthracene.  Two reactors may be used alternately provided with agitators, while the solution is circulated by a pump, and sulphuric acid is drawn in by an aspirating device which also draws in air or inert gas to promote mixing.  A secondary acid treatment may be effected to remove residual carbazole. Specification 548,877 also is referred to.
Patent GB-1400672-A (GB)
Title: Internal combustion  pile drivers
IPC: E02D7/12
Filed: 1973-04-06
Abstract: 1400672 Pile drivers DELMAGVERWALTUNGS GmbH, [trading as DELMAG MASCHINENFABRIK REINHOLDDORNFELD] 6 April 1973 [8 April 1972] 16536/73 Heading B3H [Also in Division F1] An I.C. pile driver comprises a cylinder 18 with an exhaust opening 24 into a silencer 32 on a casing 22 provided with cooling fins 26. The silencer may be made of two opposed parts 34, 36 bolted to the casing or the inner part may be integral with the casing. The silencer chamber is divided by a wall 38 into inner and outer chambers which are in turn divided by webs 40, 42 into upper and lower chambers 50, 52, 54, 56. The exhaust gases from the cylinder 18 are damped by flowing through chambers 50, 52, 54, 56 via ports 60, 62 in the webs and one or more openings 64 in the wall 38, to an exhaust outlet 70. The pile driver has a fuel mixture inlet valve 14 and a spark plug 16.
Patent GB-1064343-A (GB)
Title: Process for the production of foamed synthetic resins
Inventor: WAAG THEODOR
IPC: C08J9/02
Filed: 1965-04-20
Abstract: Foamed synthetic resins based on mono-, dior trimethylol ketones or mixtures thereof or on precondensates obtained by subjecting these compounds to a mild thermal treatment are prepared by a process in which, before foaming and condensing of the methylol ketones or their precondensates with solutions of alkali metal hydroxides, there is added a very finely-divided metal powder or flake which is capable of reacting with the alkali metal hydroxide with the evolution of gas. The preferred metals are aluminium, magnesium and zinc or alloys thereof, e.g. aluminium bronze powder.  The metal powder or flake is preferably used in an amount of about 0.5% by weight of the reaction mixture as a whole.  Fillers or stiffening or strenthening materials may be added before or during foaming.
Patent GB-1471271-A (GB)
Title: Adjustable wire stripper
IPC: H02G1/12
Filed: 1975-04-22
Abstract: 1471271 Wire stripper THOMAS & BETTS CORP 22 April 1975 [24 April 1974] 16568/75 Heading H2C In a pliers-type wire stripper closure of the jaws is limited by interaction of a cam means, coupled to one jaw, and an engaging means coupled to a second jaw, the cam means is movable along its jaw to predetermined positions. In one embodiment the cam means 44 is slidable along a leg 40 joined to a jaw 26, a tooth 66 engaging in a rack to locate the means. Engaging means 56 coupled to the other jaw 24 engages with the cam to limit closure, a scale on the leg indicating the cam position for a particular wire gauge. In other embodiments the cam slides in a rail on the jaw and is located in a rack by a spring- biased ball (Figs. 11-13, not shown). The jaws may also be lockable in the closed position.
Patent GB-1112711-A (GB)
Title: Improvements relating to heels for footwear
IPC: B29C33/00
Filed: 1966-04-15
Abstract: A copper capsule which subsequently acts as a negative for a shoe heel in an injection process is made by a method comprising coating a specimen heel with varnish and when dry applying thereto a coat of copper or bronze powder, of a few microns in diameter, mixed with acetone, and then evaporating the acetone. The thus coated heel is then electro-plate with copper from an acid sulphate bath in which electrolytic copper forms the anode. The voltage is initially set at 1-2 volts and is increased to 5-6 volts to give a copper coating of 1-1.5 mm in thickness, this initially low voltage ensuring a faithful reproduction of the surface features of the specimen.  The coated specimen is then removed from the bath and the heel is removed by lifting out or burning out.  The copper capsule thus formed is reinforced externally by application of a zinc alloy and plastics material is injected into the capsule to form the shoe heel.
Patent GB-529692-A (GB)
Title: Automatic control device for cyclone dust separators
IPC: B04C11/00
Filed: 1939-06-06
Abstract: 529,692. Centrifugal dust separators. PRAT, E. June 6, 1939, No. 16615. Convention date, June 20, 1938. [Class 23] The gas intake of a cyclone separator b is controlled by a register flap c which swings on an axis d inclined to the vertical, so that the gravitational force on the flap acts in opposition to that exerted by the gas flow. The free end of the flap c is curved, and the gravitational effect is increased by a weight e adjustable along an arm at right angles to the axis d. The angle between the flap and the arm carrying the weight e can also be adjusted by the sleeve g which is secured by a set screw.
Patent GB-420357-A (GB)
Title: Control system for automatic weighing apparatus
IPC: G01G21/00
Filed: 1934-06-04
Abstract: 420,357. Weighing - apparatus. SOC. ANON. DES ETABLISSEMENTS C. TESTUT, 8, Rue Popincourt, Paris. June 4, 1934, No. 16639. Convention date, June 3, 1933. [Class 143] In an automatic weighing-apparatus the beam (for example of the sliding poise type) is brought into equilibrium by means of an escapement mechanism directly controlled by the movements of the beam and controlling by suitable cams a set of electric contacts in the circuits of the motor employed for actuating the equilibrating mechanism. An escapement plate 45 secured to the steelyard is provided with gapped portions 51 situated adjacent two stepped plates 7, 8 which tend to rotate independently under spring action. The springs may be wound up manually or automatically. A load placed in the scale pan causes the escapement plate 45 to rise and permit the stepped plate 8 to make half a revolution and by means of three cams on its spindle to operate electric contacts in the motor circuits, a beam attachment at the same time actuating two further contacts, resulting in, (1) the release of a brake, (2) the coupling of a high speed clutch, and (3) the energization of the motor. The equilibrating mechanism is driven at a high speed and the beam commences to move towards its equilibrium position until the beam attachment reverses its two contacts, the high speed clutch is de-energized and a slow speed clutch is brought into operation. On reaching the equilibrium position the stepped plate 8 is permitted to make a further halfrevolution, the circuits are broken by a further movement of the cams, the brake is applied and the motor is stopped. On removing the load a similar operation occurs owing to the liberation of the stepped plate 7, a further clutch, geared for reverse rotation, being substituted in the equilibrating system.
Patent GB-1276651-A (GB)
Title: Improved building construction block
Inventor: PORSOLT IMRIC VOJTECH
IPC: E04B2/50
Filed: 1968-04-08
Abstract: 1276651 Building blocks I V PORSOLT 25 June 1969 [8 April 1968] 16713/68 Heading E1B A concrete, terra cotta or synthetic block has one substantially plane rectangular face 3, and a pair of spaced ribs 5 and 6 on the opposite face, the ribs each defining a cavity 11 or 12 through the block and each having a groove 20 therein. A further cavity 13 is also provided. The blocks are bonded to adjacent blocks by flat metal reinforcement strips grouted into grooves 20. The blocks are used for building cavity walls, floors, ceilings or steps, the structures may be filled with concrete. Trough shaped apertured blocks are used in conjunction with the brick of the invention to define beams and pillars, which are then filled with concrete.
Patent GB-407657-A (GB)
Title: Process of the catalytic reactions which are produced with the unstable products of sulphur dioxide which the atom of mercury gives off in changing into gold
IPC: C22B11/10
Filed: 1932-06-14
Abstract: <PICT:0407657/III/1> Transmuting elements.--This Specification, which does not admit of satisfactory abridgment, states that mercury is transmuted into gold when a mercurous salt becomes dissolved in a very concentrated solution of caustic potash.  Mercurous nitrate is treated with a concentrated solution of caustic potash, the resulting mercurous oxide and potassium nitrate being admixed and heated with a further quantity of concentrated caustic potash to form a mass which solidifies on cooling.  The mass is dissolved in strong nitric acid and on evaporation a block of potassium nitrate encrusted with a dark red substance is formed.  The block is powdered and mixed with carbon and the mixture is heated in a retort, the residue being treated with strong nitric acid to produce a colloidal solution of gold.  Metallic gold may be obtained from this solution by various methods.  Rotary furnaces.--A rotary furnace is constituted by a hearth m in front of which revolves a cylinder n of sheet iron provided with a refractory lining o and a charging opening s.  Upon revolving the cylinder, the charge distributes itself better because of a dividing wall t provided with air cooling tubes u.
Patent GB-349319-A (GB)
Title: Improvements in a welding machine
IPC: B23K11/06
Filed: 1930-05-31
Abstract: 349,319. Welding. FORD MOTOR CO., Ltd., 88, Regent Street, London. May 31, 1930, No. 16924. [Class 83 (iv).] In a welding machine electrode rollers 23, 24 are rotated by rollers 50 held in position by spring pressure. An electromotor 35 drives through worm and sprocket gearing a lower roller 50, and, through a telescopic shaft an upper roller 50. The shafts carrying the rollers 50 are mounted on pivoted frames, urged by springs 83, adjusted by hand wheels 82, 57, to press the rollers 50 into contact with the electrode, rollers 23, 24. The rollers 50 are formed with grooves and serrations for trueing the electrodes.
Patent GB-385219-A (GB)
Title: Manufacture of chloro- and bromo-derivatives of 2-aminonaphthalene-1-sulphonic acid
Filed: 1932-06-15
Abstract: Chloro- or bromoderivatives of 2-aminonaphthalene - 1 - sulphonic acid are prepared by substituting an amino group for an hydroxy group in a 5-(6-, 7- or 8-) bromo- or 5-(6-, 7-or 8-) chloro-2-hydroxynaphthalene-1-sulphonic acid or salt thereof in any known manner but preferably by heating the hydroxy compound in a closed vessel with aqueous ammonia in the presence of ammonium sulphite.  In examples, the sodium salt of 6- or 7-chloro-2-hydroxynaphthalene-1-sulphonic acid or the corresponding 7-bromocompound is heated in a closed vessel with aqueous ammonia and ammonium sulphite to give the corresponding amino compounds.  5-, 7- and 8-Bromo-2-hydroxynaphthalenes may be made from the corresponding aminonaphthols by diazotization and replacement of the diazo-group by bromine by the Sandmeyer reaction.  Halogen derivatives of 2-hydroxynaphthalene-1-sulphonic acids are obtained by sulphonating halogenated 2-hydroxynaphthalenes.  6 - Chloro - 2 - hydroxynaphthalene - 1 - sulphonic acid is prepared by treating 6-chloro-2-naphthol with sulphuric acid or chlorosulphonic acid.
Patent GB-170012-A (GB)
Abstract: 170,012. Morin (dit Gauthier), G. H. Oct. 11, 1920, [Convention date]. Void [Published under Sect. 91 of the Act]. Two-stroke-cycle engines. - A piston a is formed with a ported extension a<1> which slides over a depending cylinder head the extension bearing against the head and also against the wall of the cylinder. Charges compressed in the crank casing enter the combustion space through ports c which register with ports e in the piston extension. Ports l in the extension register with exhaust ports f in the cylinder wall. The piston may control the admission ports to the crank chamber.
Patent GB-182114-A (GB)
IPC: E05G1/024
Filed: 1922-06-20
Abstract: 182,114. Brõuer, R. June 20, 1921, [Convention date]. Addition to 181,721. Safes.-Safes made up of removable blocks and rings of masonry as described in the parent Specification are formed with several compartments by combining several such safes into one whole. Figs. 1 and 2 illustrate two such safes superposed and formed into one safe. The base-slab a is formed with shoulders to position the inner rings of reinforced masonry b of both top and bottom compartments. The outer rings of masonry c surround both compartments. The usual front frame d completes the walls. The metal frame g carrying the doors h and secured to the inner metal boxes f, clamps the frames and rings together when the plates e are screwed down to the bolts i. The boxes f may be replaced by straps for clamping the frame g to the bolts i. Fig. 7 shows a compound safe with four compartments. The safes cannot be dismantled for ease in transporting their component blocks until the nuts on the bolts i, inside the safe compartments, have been removed. The Specification, in the original form as open to inspection under Sect. 91 (3) (a) comprises also a statement that a row of complete single safes may be joined together by bolts such as i embedded in the abutting walls of adjacent safes and accessible only from the insides of the safes. This subject-matter does not appear in the Specification as accepted.
Patent GB-658162-A (GB)
Title: Improvements in or relating to circular saw guards
IPC: B27G19/02
Filed: 1949-06-28
Abstract: 658,162. Machinery guards. EVANS, M. C: June 28, 1949, No. 17062. Convention date, July 12, 1948. [Class 80(iv)] A guard for a circular saw comprises a hood member 4 which is adapted to seat on to the surface of the sawbench 1 and completely cover-the saw blade when it is not in use. The hood 4 is pivotally supported at 16 on a saddle 17 suspended on a wire 18 and counterbalanced by a weight 22. A link 26 is pivotally connected at 25 to the hood 4 and also to a fixed member 27 so that as a workpiece is moved forward towards the saw blade it engages .the link 26 to raise the forward end of the hood and then the rear end until the hood lies along the top surface of the work, the rear end of the hood being guided by a slotted link 10 engaging a fixed pin 12. On the workpiece passing beyond the hood the front first falls and then the rear into the original position on the bench 1.
Patent GB-151396-A (GB)
Title: Improvements in and relating to coating compositions for the parts of aircraft
IPC: D06M11/71
Filed: 1919-07-08
Abstract: 151,396. Bradley, P. R. July 8, 1919. Drawings to Specification. Water paints consist of alginic acid or alginates, to which may be added shellac or similar gum for increasing its proofing effects. The fireresisting qualities may be increased by adding suitable substances, such as boric acid, phosphate, sodium tungstate, &c.
Patent GB-496738-A (GB)
Title: The manufacture of pyrimidine compounds
Filed: 1937-06-02
Abstract: 2-Methyl-5-ethoxymethyl or bromomethyl-6-amino-pyrimidine is prepared by hydrolysing b -ethoxypropionitrile in the presence of alcohol, condensing the resulting ethyl b -ethoxypropionate with formic ester in the presence of sodium, reacting the sodio-formyl-ethyl-b -ethoxypropionate so formed with acetamidine hydrochloride in the presence of sodium alcoholate, chlorinating the 2-methyl-5-ethoxy-methyl-6-hydroxypyrimidine with phosphorus oxychloride, treating the product with alcoholic ammonia under pressure, and finally, if desired, reacting the 2-methyl-5-ethoxymethyl-6-amino-pyrimidine with hydrobromic acid to replace the ethoxy group by bromine.  The products are useful in the preparation of Vitamin B1.  Examples are given relating to each of the steps of the process and of the conversion of the final process into its hydrobromide.  Specification 473,193 is referred to.
Patent GB-612914-A (GB)
Title: Improvements relating to roofing tiles
IPC: E04D1/04
Filed: 1946-06-06
Abstract: 612,914. Roofing tiles. DECOBERT, E. June 6, 1946, No. 17188. Convention date, Aug. 31, 1915. [A Specification was laid open to inspection under Sect. 91 of the Acts, Dec. 7, 1946] [Class 87(i)] A hexagonal tile is formed at the side edges of the upper part of its outer face with parallel ribs 3, 3" and at the side edges of the lower part of its inner face with ribs 3. A perforated hanging nib 4 and an upstanding p e rforated rib 4" are formed at the top edge and a perforated depending rib 10 at the lower edge of the tile. Shallow ribs 3<111> having inwardly inclined surfaces are formed at the lower part of the outer face of the tile. The Specification, as open to inspection under Sect. 91, comprises also a hexagonal tile having an undercut rib along the three upper edges of its outer face and a corresponding rib along the three lower edges of its inner face. This subjectmatter does not appear in the Specification as accepted.
Patent GB-1477431-A (GB)
Title: Continuous process for the preparation of abs type polyblends
IPC: C08L7/00
Filed: 1975-04-25
Abstract: 1477431 ABS type polymer blends MONSANTO CO 25 April 1975 [26 April 1974] 17208/75 Headings C3G and C3P Blends of styrene/acrylonitrile type copolymer and two grafted diene rubbers are obtained by continuously adding the grafted diene rubbers to the product obtained by continuously polymerizing alkenyl aromatic and alkenyl nitrile monomers in bulk or in the presence of an organic diluent in which a constant volume of liquid reactant forming 10- 95% of the polymerization reactor is maintained, the remainder being vapour and cooling is effected (a) at least 10% by vapour removal, (b) up to 90% by monomer feed or reflux and (c) if necessary up to 50% by heat transfer through the reactor walls while maintaining conditions of 100-180‹ C. and 0À35-10À55 kg./cm.<SP>2</SP> to give a rate of copolymer formation of 0À05-2 kg/kg. of liquid phase/hr., the amount of added grafted diene rubbers being sufficient to give a content of 1-40% by wt. of the liquid phase effluent; the two graft polymers are of the ABS type, one having a particle size of 0À8-10 microns, a particle size of 0À7-10 microns, a swelling index of at least 5 and having occluded and grafted copolymer in an amount of 1-5 parts per part by wt. of rubber base, and the other having a particle size of 0À01-0À5 micron, a swelling index of at least 2, having 0À1-2À5 parts of grafted copolymer per part by wt. of rubber base and forming 50-97% of the total graft polymer mixture.
Patent GB-1008516-A (GB)
Title: Improvements in or relating to clothes supporting devices
Inventor: WIXON WALTER
IPC: A47G25/08
Filed: 1961-05-11
Abstract: 1,008,516. Clothes racks. WALTER'S WELDING & PRODUCTION ENGINEERS Ltd. April 18, 1962, No. 17227/61. Heading A4U. A device for supporting clothes for display &c. comprises a frame having a main bar A and spaced parallel projecting rods B, a ring clamp E being secured to the centre of bar A through a spigot D and sleeve C so that the device may be clamped to a post or horizontal rail and locked at a desired angle by grubscrew G.
Patent GB-842681-A (GB)
Title: Improvements in and relating to carrier bags
IPC: B65D33/10
Filed: 1958-05-30
Abstract: 842,681. Paper bags ; carrier bags. GOTZE, K. May 30, 1958, No. 17297/58. Classes 94(2) and 133. A carrier bag f has one or more handles formed of lengths a of fibre or synthetic resin glued into an outer strip b of paper, the ends of the outer strip being secured to the bag, e.g. by gluing, while the remainder surrounds the lengths a. The fibre may be bast fibre. Incisions c facilitate folding the strip b around the lengths a.