baber/WOPTO huggingface dataset:
Patent GB-458634-A (GB)
Title: Improvements in lithographic plate graining machines
IPC: B41N3/04
Filed: 1936-02-17
Abstract: 458,634. Graining lithographic plates. FRITSCHE, R., 145, Hudson Street, New York, U.S.A. Feb. 17, 1936, No. 4828. [Class 60] A machine for graining lithographic plates comprises a box 1, 2 supported by standards 4, which are normally vertical but swing as the box is gyrated under the influence of the rotation of a pulley 18 carrying an eccentrically placed weight 17 adjustable radially by a screw 21. The standards each have secured thereto at the top and bottom a socket 6 carrying a plate 7 formed with a recess 8 arranged opposite a recess 9 in a plate 10, the recesses accommodating a ball 16 and the plates being resiliently pressed together by springs 13, 14 carried by rods 11 screwed into the plate 10 and passing loosely through holes 12 in the plate 7, and the springs being adjustable by nuts 15 on the rods. The pulley 18 is rotatably mounted in bearings carried respectively by the underside of the box and by cross-bars 26 on the box and is driven by a belt 29 from an electric motor 5. The plates 33 to be grained are placed in a pile in the box and held down by hinged members 53 and the top plate is grained by the action of steel balls or marbles 34, loose abrasive, and water. In order to prevent noise, the box has a cover 35 made in two parts hinged together and comprising frameworks having transverse bars which rest on the sides of the box, the sections of the cover each comprising plates 46 .. 48 of fibre board &c. spaced apart, the spaces being filled with wool, cotton, &c. waste ; the plates 47, 48 may be covered with thin metal 49, 50.
Patent GB-556745-A (GB)
Title: Improvements in or relating to electric signalling systems
IPC: H02J13/00
Filed: 1942-04-14
Abstract: 556,745. Electric signalling systems. STANDARD TELEPHONES & CABLES, Ltd., FONSECA, H. M. M. D'ASSIS-, and WARD, H. J. April 14, 1942, No. 4889. [Class 40 (i)] A receiver for a train of impulses which vary individually in polarity and length comprises a pair of relays responsive respectively to positive and negative impulses, a common relay operated by either of these relays and a pendulum relay which is controlled by the common relay and serves to indicate a long impulse when swinging freely on occurrence of such an impulse. A transmitter of such an impulse train is described in. Specification 556,739 and the invention is applicable to control and supervisory systems for power networks such as are described in Specifications 489,000 and 514,991 with reference to impulse trains of a different character. The impulse train comprises a long seize and a short prepare impulse followed by the code impulses (long or short +<SP>ve</SP> or -<SP>ve</SP>) and a long terminating impulse. The polarity of the impulses other than those of the code is immaterial. The seize impulse operating IP or IN bings up IR followed by G and, when IR relapses, by C. Both C and G hold during the train. The back stroke magnet SRM of switch SR energizes on the prepare impulse, and pendulum relay PI previously operated by G is de-energized when IR operates on the prepare and subsequent impulses. The period of the pendulum armature synchronizes with the short impulses, and the release of relay PM occurs on the operation of P1 during such impulses, but on a long impulse PM is held and the pendulum armature pi1 makes a circuit over SR4, pm1, ir2, g1 towards the end of the impulse, to give an indication over switch bank LPM. The positive and negative impulses are indicated over banks PPM, NPM in obvious manner. C falls back during the terminating impulse. The drawing shows discrimination between the lengths of make impulses, but by reversing contact ir2, break impulses could be distinguished.
Patent GB-647803-A (GB)
Title: Improvements in or relating to printed books
IPC: B42C9/00
Filed: 1948-02-19
Abstract: 647,803. Books. SHENFIELD, L. Feb. 19, 1948, No. 4925. [Class 16] A book printed with letterpress, diagrams, pictures, designs and the like comprises a number of sheets of synthetic plastic material welded together e.g. at the marginal portions of one of their edges by high frequency electric field welding either in the form of a continuous seam or of a series of spot welds. The plastic material may be of polyvinyl plastic and the sheets may be all of the same thickness and size or the covers may be thicker or stiffer and of a larger size or of a different nature.
Patent GB-180016-A (GB)
Title: A process for the preparation of formaldehyde or its polymers from mixtures of carbon monoxide and hydrogen
IPC: C07C45/49
Filed: 1921-02-12
Abstract: A gas containing methane is produced by forcing a mixture of carbon monoxide and hydrogen, for example suction or water gas, under pressure through a catalytic mass consisting of a hydrogen-activating catalyst such as nickel or cobalt and a hydrated metal oxide such as alumina or rare earths, the activity of the mass being maintained either by the introduction of steam into the gas or by periodic treatment with steam.  Formaldehyde formed is removed by scrubbing with water.ALSO:A gaseous mixture of carbon monoxide and hydrogen, for example suction or water gas, is forced under pressure through a catalytic mass consisting of a hydrogen-activating catalyst such as nickel or cobalt and a hydrated metal oxide such as alumina or rare earths, the activity of the mass being maintained either by the introduction of steam into the gaseous mixture or by periodic treatment with steam.  Formaldehyde is removed from the product by scrubbing with water; the residual gas, which contains methane and hydrogen, is of value as an illuminating-gas.
Patent GB-124798-A (GB)
Title: Apparatus for the Manufacture of Hydrogen.
Inventor: MACKIE TOM DARKE
IPC: C01B3/06
Filed: 1916-04-05
Abstract: 124,798. Mackie, T. D. April 5, 1916. Hydrogen.-In a plant for making hydrogen by the alternate reduction of iron oxide by water gas and oxidation by steam, a water-gas generator A is arranged centrally with respect to an annular cast-iron chamber B containing iron ore or oxide. The waste gases from the generator A circulate through flues E around the chamber B and round heat regenerators C and a steam-superheater D. The generator A is provided with a valve F for admission of coke or other fuel, a valve G for passage of water-gas to a purifier and gas-holder, and a valve H for passage of waste gases to the flues E. The chamber B has valves I, J for passage of water-gas and steam and gas-outlet passages K. The flues E have air supplies to burn any combustible gas which passes into them.
Patent GB-1537132-A (GB)
Title: Method and apparatus for casting a plurality of ingots
IPC: B22D23/10
Filed: 1976-02-10
Abstract: 1537132 Continuous casting using molten metal obtained by the use of electrodes CONSARC CORP 10 Feb 1976 05057/76 Heading B3F [Also in Division H5] A pool 16 of molten metal, formed in a vessel 14, 20, 22, supplies moulds 24 while electric current passes through an electrode 26, the pool 16 and a (water-cooled, copper) conductor 40 outside the moulds.  As shown, molten slag 18 covers the metal pool 16 and there may be simultaneous electroslag remelting of several electrodes 26, or melting by vacuum arc or a non-consumable electrode. There may be a conductor 40 between each pair of adjacent water-jacketed, copper or steel moulds 24, connected to a plug 38 for electrical connection. The current may flow in either direction or may be alternating. The bottom 20 of the melt vessel and replaceable sleeves 22, e.g. both of zirconia, insulate, and may be preheated, to prevent solidification at the mould inlets. As casting proceeds, a support table 36 may be lowered, or the mould and vessel assembly raised, to accommodate the growth of the castings.
Patent GB-939983-A (GB)
Title: Improvements in or relating to electro-magnetic transducers
Inventor: NEWTON GEORGE CHARLES
IPC: H04R9/16
Filed: 1959-02-14
Abstract: 939,983. Gramophone pick-ups and recorders. ELECTRIC & MUSICAL INDUSTRIES Ltd. Feb. 2, 1960 [Feb. 14, 1959], No. 5197/59. Class 40 (4). An electromagnetic transducer such as a stereophonic disc cutter or pick-up comprises a coil assembly including a pair of coils 8, 9, preferably of D-shape, having portions 10, 11 disposed in a magnetic gap 6 in a plane perpendicular to the polar axis 7 of the gap, the portion 10 being angularly displaced with respect to the portion 11, the coil assembly being mounted for movement in any direction in the plane. The coils may be formed by printed circuitry and are insulated from one another, being held between two supporting discs 12, 13. The polepieces 4, 5 are fed from a permanent magnet 1 by soft iron limbs 2, 3. The coil assembly is rigidly secured to a stylus arm 17  passing through apertures 16. End 19 of the stylus arm is mounted in an elastic sleeve 20 mounted in a bore in the limb 3.
Patent GB-1075004-A (GB)
Title: Method of and apparatus for welding wires on to condenser serpntine tube elements
IPC: F25B39/04
Filed: 1965-02-05
Abstract: 1,075,004. Welding by pressure. ETABLISSEMENTS SANDRET. Feb. 5, 1965 [Feb. 19, 1964], No. 5220/65. Heading B3R. In a method of welding heat-dissipating wires 3 to a flat superpentine condenser coil 2 the coil 2 is arranged vertically and raised intermittently and wires 3 are welded transversely to both sides of the coil 2 by electrodes 15, 16 at each pause. An apparatus for carrying out the method comprises stores 8 from which are vibrated the wires 3 to a support 11. Suction nozzles 12 pick up individual wires 3 and drop them down surfaces 14 ready for welding by the electrodes 15, 16. Pusher-members 27, controlled by lever 31 and cam 33, raise the coil 2 by means of sawteeth 28 which lifts on the recently welded wires 3 and holds the coil while another wire is welded. The electrodes hold the coil 2 while the saw-teeth are lowered and sprung through the newly welded wires ready to raise the coil again. The electrodes are moved in sequence by cams 17, 18 against springs 25, 26 and are fed with welding current by a contact-maker actuated by a cam or other suitable means. The coil 2 carries along its top a carriage 37 that runs along vertical rails. A switch is arranged in a frame at the top of the apparatus which is automatically operated by the carriage 37 to stop the apparatus when the coil is fully raised. A magnetic retaining device is used to hold the carriage 37 in its raised position to facilitate the removal of a completed coil and the replacement of a new coil.
Patent GB-660158-A (GB)
Title: Improved foundry core oil
IPC: B22C1/24
Filed: 1949-02-25
Abstract: A core oil for foundry purposes comprises a mixture of tall oil esterified with a polyvalent alcohol and fatty acid distillation residues with or without a small proportion of a suitable diluent. The polyvalent alcohols may comprise ethylene glycol, propylene glycol, hexylene glycol, glycerine, sorbitol or pentaerythritol, and may be impure such as crude glycerine or glycerine residues.  The esterification may be incomplete, the material still having an acid value of about 20.  The fatty acid distillation residues preferably have an acid value of not more than 50 the distillation being discontinued before the residue has reached the consistency of pitch, e.g. when the residue still has the consistency of a viscous fluid of which the maximum viscosity corresponds to a flow out time of 1,500 seconds at 20 DEG C in the 8 minutes Ford cup.  The residues may be obtained from any fatty acid such as the fatty acid mixtures from splitting drying, semi-drying and non-drying vegetable and animal fats and oils; such oils specified comprise linseed oil, corn oil, poppy seed oil, rape seed oil, sunflower seed oil, grape seed oil, soya bean oil, peanut oil, cotton seed oil, palm oil, tung oil, perilla oil, oiticica oil, castor oil, dehydrated castor oil, coconut oil, tallow, and fish oil.  The optional diluents may comprise any known liquid core binder miscible with organic media and having a viscosity of less than 1,000 cp at 20 DEG C, e.g. a fatty oil such as linseed oil, soya bean oil, cotton seed oil.  The total proportion of the tall oil esters and the fatty acid distillation residues comprises at least 80 per cent, and each of these components at least 25 per cent, by weight of the core oil.  The core oil may be mixed with known core binders such as dextrine, starch, sulphite waste liquor or molasses; driers may also be added to the core oil.
Patent GB-395799-A (GB)
Title: Improvements in or relating to the construction of electron discharge tube used for the recording of sound
IPC: H01J17/40
Filed: 1932-02-22
Abstract: 395,799. Discharge lamps. FIDELITY FILMS, Ltd. and CROWTHER, F. K., 174, Wardour Street, London. Feb. 22, 1932, No. 5259. Addition to 364,146. [Class 39 (i).] In the sound-recording lamp of the parent Specification, metal deposits forming on the insulation adjacent the cathode are insulated from the cathode by parallel gaps D between the flat sides of the cathode strip C and the sides of the trench or slot H of which the cathode C forms the base. The gaps D are sufficient to separate the deposits from the cathode but are so small, preferably less than À005 inches, that the discharge does not extend into them. A clamp F holds the insulating side - pieces B against the cathode C with packing pieces E interposed to form the gaps D. The anode A is over the centre of the cathode.
Patent GB-723239-A (GB)
Title: Atmospheric moisture precipitation apparatus for use in arid regions
Inventor: CHAMBERS WILLIAM ARNOLD
IPC: E03B3/28
Filed: 1952-02-28
Abstract: 723,239. Atmospheric-moisture precipitation apparatus. BRITISH ELECTRICON (LONDON), Ltd. Feb. 27, 1953. [Feb. 28, 1952 ; April 29, 1952] Nos. 5267/52 and 10797/52. Class 64 (3). Apparatus for precipitating moisture from the atmosphere comprises a chamber bounded above by a metal plate of high thermal conductivity with an upper surface which is a good radiator, the chamber having inlet and outlet openings which, when the upper surface of the plate is losing heat by radiation, permit a restricted stream of air to enter the chamber, become cooled and deposit moisture, and then by convection leave the chamber at a lower level, while the moisture is collected by the lower walls of the chamber and directed to a receiver. In the form shown, the precipitating chamber 2 comprises saucer shaped members 4, 6 spaced slightly apart to leave a passage 10 for the entry of air. The member 4 is of copper or aluminium and its upper surface is blacked to increase its radiating properties and fin members 8 project from its inner surface into the chamber 2. The member 6 is provided with an outlet 12 for air and condensed liquid leading to a receiver 14 e.g. a vacuum flask in which the liquid collects and which is slightly spaced from the member 6 to allow air to escape. The radiating surface of the chamber 2 may be convex (as shown), concave, 'or flat and the vacuum flask may be sunk in a pit in the ground. According to the Provisional Specification, a filter may be provided at the outlet from the chamber 2.
Patent GB-745382-A (GB)
Title: Improvements in or relating to electro-deposition of zinc
Inventor: HEYMANN ERICH
IPC: C25D3/24
Filed: 1953-02-25
Abstract: 745,382. Electrodeposition of zinc. SILVERCROWN, Ltd. Feb. 25, 1954 [Feb. 25, 1953], No. 5317/53. Class 41. To enable the deposition of bright zinc at high cathode current densities, e.g. several hundred amps/sq. ft., a water-soluble coffee extract, prepared by digesting roasted, preferably ground, coffee beans with hot water or by extracting unroast coffee with water followed by drying and roasting, or an aqueous solution thereof, is added to the zinc-containing electrolyte. Typically the electrolyte is of the zinc cyanide type and contains 10 to 20 grams of extract per litre, while electrolysis may be effected at temperatures of 60‹ to 130‹ F.
Patent GB-204646-A (GB)
Title: Improvements in and relating to explosives
IPC: C06B25/32
Filed: 1923-02-23
Abstract: 204,646. Nobel Industries, Ltd., (Du Pont de Nemours & Co., E. 1.). Feb. 23, 1923. Explosives.-Tetranitropentaerythrite is used in priming compositions for igniting propellant explosives, for example in the proportion of 5 to 10 per cent with 50 per cent of potassium chlorate, 25 to 23 per cent of lead sulphocyanide, and 20 to 17 per cent of antimony sulphide. In another example, lead sulphocyanide is replaced by mercury fulminate, and the proportions, except those of the tetranitropentaerythrite, are slightly varied.
Patent GB-811226-A (GB)
Title: Improvements in or relating to tap changing apparatus
Inventor: TURRALL JAMES CHARLES
IPC: H01F29/04
Filed: 1956-02-21
Abstract: 811,226. Transformers. GENERAL ELECTRIC CO. Ltd. Feb. 21, 1957 [Feb. 21, 1956], No. 5366/56. Class 38 (2). For on load tap changing, a non-current breaking switch 1, 2, 3, 4 is connected to each tap of a transformer winding, and odd numbered switches 1, 3 and even numbered switches 2, 4 are connected respectively to contactors A, C, these contactors being connected respectively through further contactors B, D to output lead 5, and separate halves Z1, Z2 of an impedance being connected across the latter. For changing from tap 1 when switch 1 and contactors A, B are closed, to tap 2 when switch 2 and contactors C, D are closed, the following intermediate steps of switch and contact closure occur: 1, 2, A, B; 1, 2, A, B, C; 1, 2, A, C; 1, 2, C. The winding may be the high-tension winding of a transformer used in traction, the arrangement resulting in relatively even wear of the contactor contacts.
Patent GB-306413-A (GB)
Title: Circuits for discharge tubes
IPC: H05B41/22
Filed: 1929-02-18
Abstract: 306,413. Wedel, C. J. R. H. von. Feb. 17, 1928, [Convention date]. Systems for supplying consuming devices.-A gas filled discharge tube 1 has main electrodes 4, 5, which are heated by the secondaries 13, 14 of a transformer, and auxiliary electrodes 6, 7. The potential of the electrode 6 is maintained in step with that of the main electrode 5, by connection to the mid-point of the heating winding 14, and the electrode 7 is similarly connected with respect to the main electrode 4. Starting and steady running are thus facilitated. Current-limiting resistances 10, 11 are in series with the main electrodes and additional higher resistances 8, 9 are in series with the auxiliary electrodes. The main electrodes are preferably of the electron emitting type comprising wire coiled on a suitable core. According to the Specification as open to inspection under Sect. 91 (3) (a) the main electrodes may be cold. This subject-matter does not appear in the Specification as accepted.
Patent GB-750007-A (GB)
Title: Improvements in or relating to the projection of stereoscopic cinematographic pictures
IPC: G03B35/00
Filed: 1953-02-26
Abstract: 750,007. Stereoscopic kinematography. SPOTTISWOODE, R. J. Feb. 26, 1953, No. 5415/53. Addition to 708,644. Drawings to Specification. Class 97 (1). Left and right eye pictures are each surrounded by masks shaped as described in the parent Specification so as to be completely stereoscopically fusible, the masking being effected at the recording or projection gates. Special gates may be used or masks may be fitted to existing gates.
Patent GB-355751-A (GB)
Title: Improvements in a vehicle construction
IPC: B62D21/00
Filed: 1930-02-18
Abstract: 355,751. Motor vehicle frames. FORD MOTOR CO., Ltd., 93, Regent Street, London. Feb. 18, 1930, No. 5458. Convention date, Feb. 18, 1929. Void [Published under Sect. 91 of the Acts]. [Class 79 (iv).] In a two-part chassis frame construction, crossframe members 14, 19 are respectively clamped by U-bolts 16, 18 to transverse springs 13, 17 on the front and rear axles 12, 11, shock absorbers 36 of the hydraulic type connecting the cross framemembers to the axles by bent arms 37 transmitting a vertical pull to links 38. Inner, tubular longitudinals 20, carrying the engine and transmission gearing, are rigidly secured at their front ends to the cross frame-member 14 and, at their rear ends are united by a welded &c. lug 21 pivotally mounted on a bolt 23 projecting from a pad 22 held in place by the U-bolts 18 securing the rear cross frame-member 19 to the spring 17. The body is attached to outer longitudinals 24 mounted on the ends of the cross frame-members 14, 19 by cushioning means as shown in Fig. 3, and comprising inner and outer sleeves 26, 27 vulcanized to a hollow cylindrical block 25 of rubber. the outer sleeve 27 being fixed to the longitudinal 24 by means of a ferrule 28 secured by bolts 29 and the inner sleeve being secured by a bolt 30 to the respective cross frame-member. The ends of the flanges of the cross frame-members are appropriately cut away to clear the lower flanges of the longitudinals 24 as shown in Fig. 3.
Patent GB-707743-A (GB)
Title: Improvements in liquid flow indicators
IPC: G01P13/00
Filed: 1951-03-07
Abstract: 707,743. Liquid flow indicators. BAYHAM, Ltd., and GEORGE, W. Y. E. March 7, 1952 [March 7, 1951], No. 5502/51. Class 69 (1) In a liquid flow indicator in which a gravity or spring-urged vane is acted upon by the whole of a stream of liquid flowing through a duct to actuate an indicator and/or alarm, the instrument is adjusted whilst in operation by means of a flap a co-operating with the vane j and having a boss b mechanically coupled to an angularly adjustable bush e. The boss b is mounted on a spindle c screwed into the wall of a chamber d having an upper part n curved to accommodate the curved flap a, the boss having diametrical notches h to engage corresponding dogs i on the bush, which latter also is mounted on the spindle c and has liquid-tight packing washers f, g. The angular movement of the bush, boss and flap may be limited by a fixed pin k co-operating with a slot in a flange m on the bush. Specification 540,417 is referred to in the Provisional Specification.
Patent GB-801838-A (GB)
Title: Improvements in or relating to pulse generating circuit arrangements
IPC: H03K3/53
Filed: 1957-02-19
Abstract: 801,838. Delay lines. TELEFUNKEN G.m.b.H. Feb. 19, 1957 [March 23, 1956], No. 5594/57. Class 40 (8). [Also in Group XL (c)] A pulse generator circuit comprises a delay line which is charged from a D.C. source and periodically discharged via a load circuit which has an internal resistance approximately equal to the characteristic impedance of the line the shape of the pulses generated being determined by damping resistance associated with the inductance or capacitance elements of the delay line. Fig. 1 shows a pulse generator in which with switch in position 1 the delay line LK is charged from a D.C. source Q which has an internal impedance Ri equal to the characteristic impedance of the line and when the switch is in position 2 is discharged via the magnetron load circuit V. The switch is preferably an electron switch such as a discharge tube or a thyratron. The shape of the generated pulses is determined as shown in Fig. 2 by damping resistors such as the variable resistors R1, R2 which are coupled via transformers T1, T2 with inductive elements of the line. In a modification, Fig. 4, not shown, the damping resistance is connected in parallel with one or more of the inductive elements. In a further modification, Fig. 5, not shown, the damping resistance is connected in series with the capacitive elements of the delay line. Fig. 6 shows a modification in which damping resistances are connected both in series and in parallel with the inductive elements of the line and also in series and in parallel with the capacitive elements. Damping resistance may be provided by winding the inductive elements with resistance wire or by providing lossy dielectric materials in the capacitive elements of the delay line. The damping is preferably applied to at least the first element of the line where this is a series inductance it is applied by an ohmic resistance in parallel of a magnitude at least approximately equal to the characteristic impedance of the line. Where the first element is a shunt capacitance the damping resistance is in series with the capacitance and of magnitude equal to approximately the characteristic impedance of the line.