baber/WOPTO huggingface dataset:
Patent GB-955974-A (GB)
Title: Improvements in or relating to concrete pavements or the like
IPC: E01C23/02
Filed: 1960-07-04
Abstract: 955,974. Expansion joints for concrete pavements. GROSSPETER-LINDEMANN G.m.b.H. STEINZENGWERKE. July 4, 1960 [July 4, 1959], No. 23333/60. Heading E1V. Expansion joints or crack inducing means in concrete pavements comprises a tube 5, e.g., of synthetic plastic material, which is longitudinally slit at its upper peripheral portion and which is filled with a sealing composition, e.g., bitumen composition after the concrete has hardened. The tube may be provided with an upwardly open extension 6 which is also filled with sealing composition. Strip-like projections 7, or other means, may be provided for securing the tube 5 to a joint board 4. The slit 8 may be cut after the concrete has hardened or may be pre-formed, in which case the sides of the tube are held apart during concreting by removable spacers. The tube may have a downwardly directed pointed strip 15 Fig. 2, which is adapted to be located above a crack inducing bar 13 in the lower portion of the pavement. The joint board 4 and the tube 5 respectively, may be supported by a U-sectioned holder and a pin, carried by a metal plate fixed to the formwork at the sides of the pavement, Fig. 5 (not shown). A foil strip folded into an inverted V may be introduced into the tube to define a recess therein from which the sealing composition is excluded.
Patent GB-907332-A (GB)
Title: Improvements in the recovery of acid anhydrides from vapours
IPC: C07C51/573
Filed: 1960-07-04
Abstract: Polycarboxylic acid anhydrides, e.g. maleic or phthalic anhydride, are obtained from a vapour mixture by scrubbing the vapours with a liquid coolant to form a mixture of coolant and anhydride, cooling to produce a slurry of anhydride crystals and a saturated solution of anhydride in the coolant, separating the slurry into a saturated solution of anhydride in the coolant and a cake of anhydride crystals mixed with coolant, melting the cake to give two liquid phases the first being coolant saturated with anhydride, the second being anhydride saturated with coolant, and distilling the second to obtain the anhydride.  Coolants specified are diethyl dihexyl and diethyl dibutyl silicates and paraffin wax.  The saturated solution of anhydride in the coolant is recycled to the scrubber.
Patent GB-1113494-A (GB)
Title: A cartridge charger for loading the cartridge magazine of an automatic gun
IPC: F41A9/82
Filed: 1965-06-02
Abstract: 1,113,494. Cartridge chargers. BOFORS A.B. 2 June, 1966 [15 June, 1964], No. 23563/65. Heading F3A. A charger or clip for loading automatic weapons comprises a framework 1, 2 from which depends means to suspend rounds of ammunition in parallel vertical rows, each row comprising two or more cartridges. The tip 21 of each projectile is secured by gripping members 7, 8, the member 7 being rigidly supported by the beam 6 of framework 1 and the member 8 being pivoted on a rod 16, both members 7 and 8 being recessed to match the profile of the projectile. Each member 8 of the clip is connected to a transversely arranged bar 20, which, when reciprocated, moves the members 8 into or out; of engagement with the projectiles. A handle 24 connected by linkage 25, 28 to bar 20 is used to bring the members 8 to the support position. An arm 30 depending from link 28 carries abutment means 31 which, when brought against; a co-operating surface in a magazine causes link 28 to be pushed upwards and bring about release of the cartridges. Rear abutment means for each row of cartridges comprise bars 11 mounted on horizontal pivots 35, each bar II having at its lower end a member 13 to engage the extractor rim of the lowermost cartridge. Each bar has an extension 36 eccentrically pivoted on a rotatable shaft 41 to which is attached a control lever 43. By actuating a lever 45 pivoted on lever 43, the shaft 41 is rotated to swing the bars 11 away from the cartridges as the clip is lowered towards the magazine. Lover 45 carries an abutment 49 which contacts a surface 50 on the framework when the bars 11 are in their operative positions.
Patent GB-444177-A (GB)
Title: Improvements in and relating to wireless and like receivers
IPC: H04N5/08
Filed: 1934-08-15
Abstract: 444,177. Television; wireless receiving systems. AGATE, C. S., 33, Dornton Road, South Croydon, and PERCIVAL, W. S., 6, York Mansions, York Avenue, Hanwell, Middlesex. Aug. 15, 1934, No. 23591. [Classes 40 (iii) and 40 (v)] In a wireless or like receiver for a carrier wave modulated in opposite senses by two sets of signals (e.g. by image and synchronizing signals), the signals of one set occurring in intervals between the signals of the other set, separate demodulating detectors are provided for the two signals, the output of one being in the opposite sense to the output of the other. In the television receiver described, the carrier in strengthened by image signals and weakened by synchronizing signals, but if frequency modulation is used, the image signals may be represented by frequencies above normal and the synchronizing signals by frequencies below normal, or vice versa. The image signals, passing through the detector 7 and series load resistance 13, are applied through potentiometer 11 to the modulating electrode 17 of the cathoderay tube in a direction to make this electrode more positive. The synchronizing signals pass through condenser 20 and detector 21, shunted by a load resistance 25 connected to the grid of a separator valve 26 biassed to cut off the anode current except when synchronizing signals are received. The output circuits of the two detectors may have frequency characteristics suited to their respective purposes. Specification 422,824 is referred to.
Patent GB-599098-A (GB)
Title: Polymerisation process
IPC: C08F4/06
Filed: 1945-09-13
Abstract: Olefinic, other than conjugated diolefinic, compounds are polymerized in aqueous media using a water soluble ceric salt as catalyst, ceric sulphate and ceric ammonium nitrate being specified.  As monomers acrylonitrile and vinylidene chloride are specified.  The medium is preferably acid and sodium bisulphite and the sodium salt of sulphated oleic acid may be added. Nitrogen may replace air in the reaction vessel.
Patent GB-997268-A (GB)
Title: A process for producing level dyeings using vat dyestuffs
IPC: C07D233/32
Filed: 1963-06-13
Abstract: Water-soluble condensation products are obtained by reacting 1 mole of ethylene urea, 0.7 to 1.8 moles of a C1- 3 monoaldehyde and 0.01 to 0.8 moles of urea, acetylene diurea or dicyandiamide, reaction being effected in aqueous solution with at least the final stage under acid conditions.  Specified monoaldehydes are formaldehyde, acetaldehyde, acrolein and mixtures thereof.  The condensation may be effected entirely under acid conditions or the methylol compound may be preformed in a neutral or weakly alkaline medium followed by acid condensation. In examples, ethylene urea is condensed with formaldehyde or acetaldehyde and acetylene diurea, urea with or without acrolein, and dicyandiamide.  The products are suitable as levelling agents for dyeing fabrics (see Division D1).ALSO:Water-soluble condensates of 1 mole of ethylene urea 0.7 to 1.8 moles of a C1-3 monoaldehyde and 0.01 to 0.8 moles of urea, acetylene dimea or dicyandiamide, at least the final condensation stage having been effected in an acid medium (see Division C3) are used as levelling agents in dyeing fabrics.  They may be added to the dyebath or incorporated in an alkaline bath containing hydrosulphite for the subsequent levelling of patchy vat dyeings.  In an example cotton satin is dyed in a bath of sodium hydroxide, sodium hydrosulphite, a dye obtained by sulphur melting from methylbenzanthrone and various condensates of ethylene urea, formaldehyde or acetaldehyde, and acetylene diurea, urea with or without acrolein, or dicyandiamide.
Patent GB-321248-A (GB)
Title: Improvements in or relating to light projectors
IPC: F21S8/00
Filed: 1928-08-17
Abstract: 321,248. Reandoo, Ltd., Veness, W. S., and Appleford, J. F. Aug. 17,1928. Projectors. - In a light-projector, particularly for use as a theatre spotlight or for shop-window illumination, in which a source of light 2, with or without a spherical or other reflector 3, is housed within a sheet-metal casing 1 provided with a front opening fitted with a lens 4, the casing 1 is also provided with one or more side openings 6 each fitted with a sleeve 7 for a tubular carrier 8 carrying a lens 9 and a pivoted mirror 12 for varying the direction of the auxiliary beams of light, the carriers 8 being slidahle to vary the divergence of the auxiliary beams and rotatable to provide a further adjustment, of the mirrors. The mirrors are pivoted on arms 11 secured to the carriers 8, and the projector is fitted with holders 5, 10 to receive colour screens, diaphragms, or shutters. The intensity of all the beams may be adjusted simultaneously by means of a dimming resistance, and the projector may be supported by means of a socket 13 attachable to a known device permitting movement of the projector in any desired direction.
Patent GB-811146-A (GB)
Title: Improvements in or relating to tractor-trailer combinations
Inventor: HULL CHARLES HARTLEY
IPC: B62D59/02
Filed: 1955-08-18
Abstract: 811,146. Driving trailer wheels. BROWN TRACTORS (ENGINEERING) Ltd., D. Aug. 3, 1956 [Aug. 18, 1955, Aug. 31, 1955], Nos. 23785/55 and 24946/55. Class 79(2) A trailer vehicle has some or all of its wheels a driven from a tractor p.t.o. through respective free - wheel mechanisms k each associated with an individual wheel a, at a speed giving somewhat slower traction than the tractor driving wheels. The drive is transmitted to wheels a by a cardan shaft (not shown), propeller shaft d, spur gears f, bevel gears g, driving axle and free-wheel mechanisms k, the drive ratio of the spur gears f being arranged such that when wheel spin occurs on the tractor the p.t.o. catches up with the over-running free-wheel mechanisms to drive the trailer wheels, the spur gears f being interchangeable to alter the drive ratio when oversize tractor tyres are used. In tractors in which the p.t.o. speed is directly proportional to engine speed the ratio of gears f may be such that the freewheel -mechanism k transmit drive only when the engine speed is high relative to that of the tractor driving wheels. In a modification, Fig. 2 not shown, the free-wheel mechanisms are mounted inboard on half-shafts; the free-wheel mechanisms may be of a suitable form, an example is given in Fig. 3, not shown. In the second Provisional Specification a single freewheel mechanism is interposed between the cardan shaft from the tractor p.t.o and the differential mechanism through which drive is transmitted to the trailer wheels.
Patent GB-1106011-A (GB)
Title: Process for the manufacture of stress-free and crack-free highpurity boron ingots bycrystal-drawing or zone-melting
IPC: C30B15/00
Filed: 1965-06-04
Abstract: In the production of a high purity boron rod free from strains p  and cracks by zone-melting using induction heating, the temperature in each plane perpendicular to the axis of the rod in the "plastic" region of the rod is maintained constant over the entire cross-section of the rod by means of a shield heated to at least 1,500 DEG C or by the supply of heat.  The shield may be a cylinder of carbon, tungsten, tantalum, or boron situated between concentric cylinders of boron nitride (Fig. 2 or 3).  The shield is purged by an inert gas except in the case of boron which may be melted.  The shield may be heated by the primary induction coil, an additional induction coil, or resistance.  Heat may be supplied by electron bombardment (Fig. 4) or a plasma which may be produced by the primary induction coil (Fig. 5).
Patent GB-969810-A (GB)
Title: Improvements relating to fluid-pressure control systems
Inventor: JOLLY MICHAEL ELIOT
IPC: F15B21/00
Filed: 1962-06-21
Abstract: 969,810. Fluid-pressure servomotor systems. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. June 20,1963 [June 21, 1962], No. 23968/62. Heading G3P. A pneumatic or hydraulic process control system has means for obtaining "bumpless" transfer from automatic to manual control and vice versa. During automatic control a pressure representative of a measured value of a variable, e.g. a flow rate, is supplied to a connection mp of a force balance type controller C where it is compared with a desired value pressure supplied by a manually adjustable pressure regulator PR to a connection dp, and the output from the controller passes by way of ports 4, 5 of a valve S1 to a feedback connection fb, to a gauge IG and to a valve V influencing the value of the measured variable. A biasing relay BR connected to the output from the controller through ports 4, 6 of the valve S1 produces corresponding output pressure which passes to a port 7 of the valve S1 To change to manual control the valve S1, which is gauged to a valve S2, is turned to seal off the port 4 and interconnect the ports 5, 7 so that the valve V can be adjusted by manual operation of pressure loading means PRR on the relay BR. At the same time, the connections mp, dp are short-circuited by the valve S2 so that the output from the controller follows variations of the pressure applied to the valve V by virtue of the connection fb. The controller is thus conditioned for "bumpless" resumption of automatic control. To ensure that the change from automatic to manual control occurs only when the loading means PRR is at zero setting, i.e. when the output from the relay BR equals the input, an interlocking mechanism of Geneva type may be provided so that the valves S1, S2 can be moved to the manual position only when the loading means PRR is at zero setting.
Patent GB-950322-A (GB)
Title: Improvements in struts and tie-rods used for strengthening girder arches used in mines and other places
IPC: E21D11/28
Filed: 1960-07-09
Abstract: 950,322. Mine arch struts. HILL PORTER (NEWCASTLE) Ltd., and A. C. TALBOTT. July 4, 1961 [July 9, 1960], No. 24036/60. Heading E1E. A strut or tie rod for interconnecting mine arches consists of a rod or tube having one end screwthreaded for a short length and provided with an integral or fixed collar whilst the other end is screwthreaded for about twice as far as said first end and is provided with a nut or union-piece.
Patent GB-1487723-A (GB)
Title: Magnetic transducer having a magneto-resistive element
IPC: G11B5/39
Filed: 1976-06-10
Abstract: 1487723 Magnetoresistive playback heads PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 10 June 1976 [13 June 1975] 24079/76 Heading G5R A magnetic record 5 is played back by means of a head including a magnetoresistive strip 1 which is supplied with alternating current having a frequency greater than 8 #/ÁD, where the strip 1 has resistivity # ohm. m., magnetic permeability Á Henry/m., and cross-sectional area D m.<SP>2</SP>. This produces, Fig. 2, a concentration of current near the edges of the strip 1, one of which faces the record 5, enabling the height a of the strip to be increased. The current source 2 may be a Gunn or L.S.A. oscillator.
Patent GB-1182509-A (GB)
Title: Landline Facsimile Transmission System
IPC: H04N1/00
Filed: 1967-05-24
Abstract: 1,182,509. Signalling over exchange circuits. XEROX CORP. 24 May, 1967 [26 May, 19661, No. 24126/67. Heading H4K. In a facsimile transmission system using telephone lines, exchange signals such as timing pips are filtered off to prevent interference with the copy.
Patent GB-704278-A (GB)
Title: Improvements in or relating to methods of drawing wire through dies
IPC: B21C3/12
Filed: 1951-10-16
Abstract: 704,278. Drawing wire. GENERAL ELECTRIC CO., Ltd., and LEEDS, R. E. Sept. 26, 1952 [Oct. 16, 1951], No. 24128/51. Class 83 (4) In a method of drawing wire the die holder is pivotally mounted so that the die maintains axial alignment with the wire. A disc 13 carry ing a diamond die 14 for drawing wire 15 is taper fitted in a ring 2 supported by needle pivots 5 in an outer ring 4 similarly supported by needle pivots 7 at right angles to the pivots 5 in a fixed support 11. Jewelled bearings are provided for the pivots 5, 7. A balancing rod 10 pushed through a lug 9 in the outer ring 4 balances the assembly in the vertical position and is used to compensate for change in balance when interchanging dies 14 of different sizes. The disc 13 may be mounted within the ring 2 on ball or roller bearings which permit the die to rotate about its axis to reduce torsional stresses in the wire.
Patent GB-360901-A (GB)
Title: Improvements relating to the heat treatment of acid sludge and like residues
IPC: B01J19/02
Filed: 1930-08-12
Abstract: Hydrocarbons of low boiling point are obtained by heating acid tar or sludge, obtained in the chemical refining of petroleum, to 700-800 DEG  C. in a closed retort coated internally with a glazed surface so that gases and vapours pass off.  The products are passed through a tar separator and the hot oil bath of a gas dissolving apparatus and are finally liquefied in a condenser.  A suitable composition for lining the retort comprises 50 per cent caustic soda, 20 per cent water glass, 4 per cent magnesium sulphate, 2-3 per cent burnt magnesia and the remainder of water.
Patent GB-1186531-A (GB)
Title: Method of Covering Articles
Inventor: TYSON JOHN HODGSON
IPC: A47C31/02
Filed: 1967-05-24
Abstract: 1,186,531. Covering chairs &c. BAKELITE XYLONITE Ltd. 15 May, 1968 [24 May, 1967], No. 24172/67. Heading A4M. [Also in Divisions B2 and B5] A method of covering a chair &c. comprises heat-shrinking thereon a laminate comprising a layer of a fleece of partially drawn monofilaments of a thermoplastic polymeric material bonded together with a thermoplastic binder, and a layer of flexible plasticized or unplasticized thermoplastic orientable material. The laminate is rendered heat-shrinkable by heating till it softens, i.e. to a temperature of 110-140‹ C., deforming, and finally cooling. The laminate in sheet form is deformed by stretching in one or two perpendicular directions, or by vacuum forming, drape moulding or deep drawing. The laminate is then secured to the chair &c. in panels tacked &c. thereto, or as a forming. The chair &c. is then heated in an oven at about 110‹ C., the laminate shrinking and becoming taut, and is thereafter cooled. Alternatively, selected areas may be heated by a hot air gun. The thermoplastic orientable layer comprises, e.g., P.V.C., polypropylene, an acrylo-nitrile-butadienestyrene copolymer, or a mixture of the latter with P.V.C., and is prepared by calendering or casting. The fleece comprises monofilaments of e.g., nylon, polyethylene, terephthalate, or polypropylene, bonded together with an acrylonitrilebutadiene copolymer latex. The lamination of the fleece to, e.g., P.V.C. is effected by spreading a P.V.C. plastisol on to the fleece and curing, or by laminating together the two sheets with a P.V.C. plastisol adhesive.
Patent GB-296724-A (GB)
Title: Improvements in or relating to apparatus for producing ultraviolet rays for treatingliving organisms
IPC: A61N5/06
Filed: 1928-08-23
Abstract: 296,724. Siemens & Halske Akt.- Ges. Sept. 6, 1927, [Convention date]. Arc lamps; arc lamp electrodes.-Apparatus for medical and horticultural purposes comprises the combination of a metal vapour arc lamp giving great intensity of rays between 330 and 360 ÁÁ relative to those between 310 and 320 ÁÁ with a filter which substantially suppresses rays below 320 ÁÁ. The arc lamp may be one with sclid electrodes burning in air or may have metallic electrodes which are liquid during working and be enclosed in an airtight container. The electrodes may contain silver or zinc. In a preferred form a flame arc from a silver cored electrode is enclosed in a quartz tube through which gas is forced and has a choking coil in the electric circuit. Two apertured screens, spaced apart, are used to screen off the crater light, and the electrodes are cooled by radiating fins or water circulation. The Specification as open to inspection under Sect. 91 (3) (a) refers also to the use of an arc lamp such as that referred to above without a ray filter. This subject-mattex does not appear in the Specification as accepted.
Patent GB-1157420-A (GB)
Title: Preparation of bitumen.
IPC: C10C3/00
Filed: 1968-05-22
Abstract: 1,157,420. Preparing bitumens. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. 22 May, 1968 [24 May, 1967], No. 24427/68. Heading C5E. Bitumens of desired wax content are made from a waxy asphaltene-containing crude oil residue as follows :-the residue is separated into two fractions of high-asphaltene, low-wax content I, and high-wax low-asphaltene II. Fraction II is separated into a low-wax fraction III and a high-wax fraction IV. Fractions III or IV are then mixed with I or I and II and/or the original residue. Cracking and distillation residues may be used, and their asphaltene content may be raised by blowing before, during -or after separation, which may be carried out by distillation or precipitation, preferably with propane. Separation into fractions III and IV is by conventional dewaxing processes, e.g. with propane alone or with methyl ethyl ketone with or without toluene, with urea and an organic solvent, or with toluene and methyl ethyl ketone. Specific examples are described.
Patent GB-702909-A (GB)
Title: Improvements in or relating to the cracking of hydrocarbons
Inventor: SCHUTTE AUGUST HENRY
IPC: B01J8/12
Filed: 1950-10-09
Abstract: <PICT:0702909/III/1> Hydrocarbons are cracked to give inter alia substantial yields of C2 and C3 unsaturated hydrocarbons by passing a residual hydrocarbon feed into the upper part of a lower temperature bed of heated solid particles passing down by gravity alone in a reactor, maintaining a temperature of from 900 to 1100 DEG F. in the bed to mildly crack the liquid charge, passing vapours from the bed upwardly through a higher temperature bed of heated solid particles maintained at from 1100 to 1800 DEG F. to crack the vapours, quenching the cracked vapours and removing the quenched vapours at a position in the higher temperature bed corresponding to the desired cracking time.  As shown heated solid particles, preferably non-catalytic, e.g. spent catalyst, petroleum coke, pumice, are fed into the top of a reactor 10 divided into two zones by a partition 24 provided with downpipes 28.  The partition causes two beds to form, one below and one above the partition.  Particles with an accretion of coke are withdrawn at 12, reheated to the required inlet temperature and recirculated.  The liquid feed is introduced by line 20 and distributers 22 into the top part of the lower bed.  Vapours formed flow upwards through the downpipes 28 into the higher temperature upper bed where they are cracked, the cracked vapours being withdrawn at the desired level through line 38 or line 40 connected to collecting channels 36 inside the upper bed.  Inside each channel 36 is a distributor for quenching steam introduced through line 48 or 50.  The vapour products may be separated into constituents and unwanted products (including gaseous olefines and light distillate) recycled with the feed.  The vapour cracking time may be varied from several seconds to a fraction of a second by varying the speed of movement and temperature of the solids, and the depth of bed through which the vapours travel.  Reheating of the particles may be accomplished by combustion of a portion of the coke formed on the particles.  Vapours may be removed, if necessary, from the lower bed by pipe 30.  Inlets 16 and 17 are provided for sealing steam and additional inlets may be provided for controlling the oil partial pressure in the two zones.  An example is given of the cracking of a heavy residual oil of specified characteristics to give inter alia a C2-C3 gas stream containing 35 per cent. by volume of ethylene. Specification 653,740 is referred to.