baber/WOPTO huggingface dataset:
Patent GB-476312-A (GB)
Title: Improved process of producing stiff fabrics stable to washing
IPC: D06M17/06
Filed: 1936-06-04
Abstract: Stiffened fabrics, stable to washing, are prepared by coating or impregnating the fabric with a polymeric vinylalkylketone and subjecting it to a heat treatment.  Mixed polymerizates of a vinylalkylketone and another polymerizable substance, e.g. styrol, vinyl acetate, vinyl chloride, or an acrylic acid ester may be employed.  Yarns and threads may be coated with polyvinylalkylketone or a mixed polymerizate and manufactured into fabrics.  The treated fabrics may be used alone or as adhesive layers for multi-layer fabrics, and may be swelled, before adhesion, by a solvent and/or a softening agent.  The degree of stiffening may be varied by the addition of softening agents.  In examples: (1) cotton fabric is impregnated with an acetone or methylene chloride solution of polyvinylmethylketone and ironed or pressed at about 100--120 DEG C.; (2) the fabric of (1) is covered on each side by sewing with a layer of fabric and the three layers pressed hot; (3) polyvinylethylketone superficially swollen in alcohol is similarly employed and (4) linen is treated with an aqueous emulsion of polyvinylmethylketone and further treated as in (1).  Examples 5--7 refer to the use of mixed polymerizates from vinylmethylketone and styrol or acrylic acid ethyl or methyl esters.
Patent GB-291405-A (GB)
Title: Improvements in thermionic valve amplifying or detecting systems
IPC: H04B1/16
Filed: 1928-05-29
Abstract: 291,405. British Thomson-Houston Co., Ltd., Assignees of Kendall, J. M.). June 1, 1927, [Convention date]. Thermionic amplifiers. - In a multi-valve amplifier in which the filaments are fed in series and the plates in parallel, provision is made to compensate for the relative difference in filament potential in order to ensure an even distribution of the input load. Current from the mains 1, 2 is fed through a resistance 13 and then through a resistance 15 to the filaments 16 and 17 in series, whilst a parallel branch through the resistance 18 supplies the filaments 19 and 20 in series. The loudspeaker field windings 7 are energized from the same mains, as well as the plates of the valves 3 - - 6 in parallel through the transformer winding 21. To compensate for the potential fall between the filaments 16, 17 and 19, 20, biasing resistances 30, 31 are provided for the grids 28, 29 respectively, a resistance 27 in series with the battery 26 serving to set the operating potential of the grids 24, 25. The input low-frequency currents from the coil 22 are applied directly to the grids 24, 25 in push-pull, and through condensers 32, 33 to the grids 28, 29. The tapping points 10, 11, 12 may serve to supply high-pressure voltage to an associated wireless receiver. Specification 271,222 is referred to.
Patent GB-823884-A (GB)
Title: Method of manufacturing investment casting shell moulds
IPC: B22C9/04
Filed: 1957-05-17
Abstract: 823,884. Moulding processes. HERZMARK, N. May 17, 1957 [April 24, 1957], No. 15746/57. Class 83 (1). In a lost-wax moulding process, a preformed refractory sprue block 1 is attached to the pattern sprue, and the investment 3 is applied so as to attach itself to said block. The block may be of cement-, silica-, phosphate-, magnesia-, plaster-bonded refractories, graphite, or metal. It may be made in several pieces, pressed around the pattern sprue, or the pattern sprue may be screwed, or injected, into the block.
Patent GB-702349-A (GB)
Title: Improvements in and relating to the preparation of chloropolysilanes
IPC: C01B33/08
Filed: 1951-07-03
Abstract: Chloropolysilanes are prepared by passing chlorine and silicon tetrachloride vapours in admixture through a fluidized bed of a finely divided silicon alloy, e.g. calcium silicide or alloys of silicon with manganese, chromium, iron, or nickel at a temperature of 190-250 DEG C.  The vapour mixture may contain 1-15 mol per cent. of chlorine and the bed may be first fluidized with silicon tetrachloride vapour alone.  All materials in the exit gases condensable at -78 DEG C. are condensed and returned to the vessel in which silicon tetrachloride is boiled to supply vapour.  When chlorination is complete and chlorine is no longer absorbed the bed is almost white and the chloropolysilanes, e.g. Si2Cl6, Si3Cl8, Si4Cl10 and higher are obtained by distillation from the silicon tetrachloride boiler.  The chloropolysilanes may be used to react with benzene or chlorobenzene to form phenylchlorosilanes. Specification 684,638, [Group IV (b)], is referred to.
Patent GB-577299-A (GB)
Title: Improvements relating to thermally released electric switches or automatic circuit-breakers
IPC: H01H73/30
Filed: 1944-08-18
Abstract: 577,299. Thermal switches ; snap-action switches. AVELING-BARFORD, Ltd., and STOKES, J. S. Aug. 18, 1944, No. 15798. [Class 38 (v)] A hand-reset switch for protecting the heater elements of sterilizers &c., is tripped by a thermally-releasable striker operating a latch. A tube 1 brazed to the heater 3 encloses a bimetallic clip 4 holding the end 5 of the striker 6 against the action of a spring 11. A latchlever 23, pivoted at 22 and having a latchsurface 25, is moved by the adjustable head 12 of the striker against the action of a spring 27, and so releases a frame 18 carrying the movable bridging contact 19, which opens under the action of a spring 20. The motion of the frame 18 carries outwards a push-button 31, slidable therein, and when this is pressed, the contact 19 is reclosed and the end of the plunger 28 engages the lever 23 to reset the striker.
Patent GB-1444933-A (GB)
Title: Emulsions of organic isocyanates
IPC: C09K23/42
Filed: 1973-04-03
Abstract: 1444933 Emulsion of organic isocyanates IMPERIAL CHEMICAL INDUSTRIES Ltd 27 Feb 1974 [3 April 1973] 15831/73 Heading B1V [Also in Division C3] Aqueous emulsions comprise water, organic isocyanate and a non-ionic surface active agent devoid of hydroxy, amino and carboxylic acid groups. The isocyanate may be an aromatic diisocyanate or aromatic polyisocyanate of higher functionality, optionally a crude mixture of methylene bridged polyphenyl polyisocyanates. The non-ionic surface active agent may have the formula where R = alkyl group of 1-4 C atoms, n is an integer such that the compound contains at least 5 oxyethylene groups and X is the residue of a di- or polyisocyanate and contains at least one free isocyanate group. The above aqueous emulsions are prepared by mixing the components.
Patent GB-594621-A (GB)
Title: Improvements relating to the metallisation of tubular structures particularly applicable to the manufacture of electrical resistive elements
IPC: C23C18/44
Filed: 1945-06-21
Abstract: In a method of metallising the interiors of tubes of insulating materials of small bore, a solution of stannous chloride is forced through the tube under pressure or drawn by vacuum and a solution of silver and a reducing agent is thereafter similarly circulated through it, the velocity of flow and the time of flow being so chosen as to produce a film of silver of predetermined thickness. The stannous chloride solution may contain 2-3 grams stannous chloride per litre, the silver solution being the known ammonical silver nitrate and the reducing solution cane sugar.  A metallic end may be fixed to the tube by the method described in Specifications 572,071 and 575,148, [both in Group XXXVI]; the tube may be plugged with wax at each end and filled with an inert gas to produce electric resistance elements.
Patent GB-350700-A (GB)
Title: Improvements in envelopes
IPC: B65D27/38
Filed: 1930-05-23
Abstract: 350,700. Envelopes. MODOLELL, J. O., 203, Carretera, San Feliu de Llobregat, Barcelona, Spain. May 23, 1930, No. 15878. [Class 146 (ii).] A stitched opening thread 1 projecting at one or both ends 3 is provided in a separate strip 4 of paper or other material secured by adhesive inside an envelope along one of its edges.
Patent GB-581815-A (GB)
Title: Improvements in the manufacture of prestressed concrete sleepers and like beams
IPC: B28B23/04
Filed: 1943-09-28
Abstract: 581,815. Reinforced concrete. DOWSETT ENGINEERING CONSTRUCTION, Ltd., BARBER, R. S. V., and LESTER, D. R. Sept. 28, 1943, No. 15923. [Class 20 (iv)] Apparatus for use in the manufacture of prestressed reinforced concrete sleepers and like beams. comprises a stout fixed pedestal 12, 13, having a head-such as pairs of short uprights 14-through which the reinforcing wires can pass, one or more brackets 15 secured to the head, and a wire anchorage plate 17 movable on each bracket and separated from the head by several adjusting screws 18. In operation, the various reinforcing wires, which may pass through a line of moulds and have their other ends suitably anchored, are passed singly or in pairs through holes 19 in a plate 17 and are subjected to tension, e.g., by hydraulic means, screw action, or by means of a winch. When the required tension has been attained the wires are fixed to the plate either by wedges 21 or by ferrules or the like. The screws 18 are adjusted to prevent movement of the plate along its supporting bracket. Concrete is now poured into the moulds and after it has set the screws 18 are turned to relieve the tension on the wires. The plates 17 shown are triangular in shape and have grooves in their bases for engaging guiding fillets 16 on the brackets 15. Specifications 581,827 and 581,828 are referred to.
Patent GB-570884-A (GB)
Title: Improvements in and relating to fireresisting coating and impregnating compositions and to fireresisting materials obtained therewith
IPC: C04B28/26
Filed: 1943-09-29
Abstract: An aqueous fire-resisting coating or impregnating composition is made by mixing sodium silicate, china clay or similar filler, sulphuric acid, acetic acid and water.  The sodium silicate is first beaten up with water, china clay is then beaten in, after which concentrated sulphuric acid and acetic acid are separately added, each with a quantity of water.  The china clay may be wholly or partly replaced by talc, french chalk, asbestine, or ground stone.  A plaster, made by adding cellulosic fibres, e.g. jute, hemp, sisal, bagasse, or straw, to the mixture, may be applied to walls, ceilings, floors, used for lining gas stoves, refrigerators, cold rooms, lagging boilers or pipes, or moulded into boards.
Patent GB-285300-A (GB)
Title: Improved distributor or feeding device for coal dust furnaces
IPC: F23K3/00
Filed: 1927-06-16
Abstract: 285,300. Weyhenmeyer, E., June 16, 1927. Charging.-Apparatus for feeding coal dust into an air conduit h leading to a furnace comprises a hopper a within the lower tapering end b of which is disposed an inverted conical distributor c adapted to be rotated and also raised and lowered to vary the area of the hopper outlet. The upper end of the distributor c carries vanes e for agitating the fuel near the outlet and may also be fitted with stirrers g extending upwardly into the main part of the hopper.
Patent GB-515357-A (GB)
Title: Improvements in or connected with cutter-chain machines for use in mining coal and other minerals
IPC: E21C25/50
Filed: 1938-05-30
Abstract: 515,357. Conveyers. MAVOR & COULSON, Ltd., and MAVOR, J. B. May 30, 1938, No. 16045. [Class 78 (i)] [Also in Group XXI] For removing cuttings which emerge with the cutter-chain of a mining machine, helical conveyer means are provided which elevate the cuttings vertically, or approximately vertically, and are driven from the motor of the machine. As shown, a carrier 9 is reversibly clamped to an auxiliary gear box E on the machine, according to the side on which the cutter-chain B is working, and includes a gear case 8 with gearing 13, 14 adapted to be driven through a coupling at either end of the gear box E. A conveyer device C is detachably secured to the gear case 8 and includes a horizontal helix 3, in a cylindrical housing 2, delivering past a curved guide 20 to a vertical helix 5 in a cylindrical housing 4 ; the helices 3, 5, are driven from gearing 13, 14, through pinion 16, and the helix 5 may deliver through a shoot, or a further horizontal or inclined conveyer, on to a face conveyer. A guide 18 steers the cuttings, and a guard plate 19 forms a stay for the conveyer device. Specification 329,837, [Class 78 (i)],.is referred to.
Patent GB-978224-A (GB)
Title: Electromagnetic relay
Inventor: PRINCE ARTHUR ENNIS
IPC: H01H50/54
Filed: 1961-05-03
Abstract: 978,224. Electromagnetic relays. OTIS ELEVATOR CO. May 3, 1961, No. 16051/61. Heading H2B. An electromagnetic relay has means for adjusting the position of all the contact springs and of the armature relative to the core, without affecting the spacial relationship between the stationary and the movable contact springs and the armature. The embodiment described comprises a contact pile up assembly 10, a magnetic frame 11, energizing coil 13 mounted on a removable core 14, and an armature 15. Contact assembly 10 comprises two spring pile ups, one each side of the relay, clamped on to a base member 37 by an insulated screw 38 so as to form an interchangeable assembly, each of which comprises a number of co-operating moving and fixed contacts 40, 41 respectively. Insulated washers 42 are interposed between contact springs, locking washers 39 and a base member 37, and have projections 46 which pass through apertures in the contact springs and fit into indentations 47 in the adjacent insulating washers and base member 37, thereby locking the washers and contact springs. A hinge leaf spring 50 riveted to an armature 49 has a portion raised to form a retaining tongue 53 in an armature slot 54. A portion of base member 37 acts as an armature stop. A moving contact driver 60 of insulated material having spaced contact positioning slots 61, is removably secured to armature 49. Two slot apertures in the armature, one shorter than the other, Fig. 4 (not shown), have their centre lines intersecting at 45 degrees. Horizontal slots 62 with slightly convex edges in the driver 60 are inserted into the longer slot and is then rotated into a locked position in the shorter aperture. The driver is prevented from further rotation by the edges of cut-outs 67 in the movable contact springs 40 which are inserted into driver slots 61 and thus actuated by the armature 2. Fixed contact springs 41 have cut-outs with clearance for the driver 60. A fixed contact positioner 68 of insulating material and having a plurality of peripheral grooves is threaded over a threaded stud 69 fastened to a frame flange portion 18. Fixed contact springs 41 are bent and fitted into respective grooves in the positioner 68, which may be raised or lowered by rotating it on the stud 69 by means of a screwdriver slot 73, after which it is locked into position by a nut 74. The armature 49 is bifurcated to engage between vertically spaced shoulders 79, 80 on positioner 68. An armature biasing spring 82 is fitted to the stud 69 by a washer 86 and a self-locking nut 87, and is attached to an annular shoulder 83. Thus any alteration of the armature to pole face gap does not change that of the contact gaps and hence the relay is suitable for voltage or current sensitive operation. The armature to polepiece gap may be reduced so that residual polepiece magnetism retains the armature in its operated position. Connecting a condenser so as to discharge through the relay operating coil enables the relay to be used as a timing relay.
Patent GB-272346-A (GB)
Title: Improvements in draining racks for cups, plates, saucers and the like
IPC: A47L19/04
Filed: 1926-06-28
Abstract: 272,346. Leates, L. M. June 28. 1926. Plate, dish, and like racks.-A draining-rack for cups, plates, saucers, or the like consists of a vertical standard on which are fixed in rows a number of bent pieces of wire of which the ends are secured in the standard, and of which some 4, 4a are bent to form upwardly extending supports for inverted cups or the like, and others 5, 5<a>, 5<b> are arranged to form upright outwardly bent loops arranged parallel to each other and secured to horizontal rods 6, 6<a>, 7, 7<a> arranged at a distance apart to form a support for the edges uf the plates or saucers between the outwardly bent loops. The standard consists of side members 2<a>, 2<b> with cross members 3<a> - - 3<g> secured thereto. The cup supports may comprise a ring- like or spiral portion 4<a> and supporting-wires 4 the ends of which are fixed in the cross-members 3<a>, 3<b>, 3<c>. The plate supports consist of wire loops 5 having lower and upper horizontal portions 5<a>, 5<b> the ends being secured to the members 3<d> - - 3<g>. The loops a.re made of triangular formation the apices passing through wooden bars 6, 6<a>. The wires 5 also pass through second horizontal bars 7, 7<a >preferably positioned at the outer ends of the lower horizontal parts 5<a> of the loops 5. The outer member 5 of the row may be fastened to or bent to extend into the outer ends of the members 3<d >- - 3<g>. The structure may stand on the horizontal member of the lower rack, or may be secured to, or hung on, a wall. A carrying handle may be provided.
Patent GB-1496306-A (GB)
Title: Semiconductor integrated circuit including an epitaxial base type vertical transistor
IPC: H01L21/8228
Filed: 1976-04-22
Abstract: 1496306 Integrated circuits TOKYO SHIBAURA ELECTRIC CO Ltd 22 April 1976 [22 April 1975] 16301/76 Heading H1K An IC including an epitaxial base vertical transistor comprises first and second epitaxial layers 16, 24 on a substrate 10, and buried regions 12, 22 which define, together with isolating regions 18, 26, 28, isolated islands 20, 30, 32, 34 in which further regions 36, 38, 40 are formed to define two vertical transistors, one of which has the region 36 as the emitter and the isolated epitaxial regions 34 and 20 as base and collector. In the other transistor the regions 40, 38, 32 form the emitter, base and collector. The various regions are formed by diffusion, antimony being used as the dopant for the regions 12, 18.
Patent GB-456166-A (GB)
Title: Improvements in and relating to weft stop motions for looms for weaving
IPC: D03D51/34
Filed: 1935-06-05
Abstract: 456,166. Weft stop-motions for shuttleless looms. WALKER & CO. (SHIPLEY), Ltd., W., Wrose Brow Road, Windhill, Shipley, and BLOODWORTH, C., 21, Conduit Street, Bradford, both in Yorkshire. June 5, 1935, No. 16302. [Class 142 (i)] Stopping mechanism for looms with stationary weft supply comprises a catch T located over a cam operated frog or hammer F and connected to a lever B-B<2> that can be moved anticlockwise, during normal running of the weft W<1>, by the upward movement of a yarn tensioning member D. On weft breakage, the lever B-B<2> remains stationarv and the catch T is engaged by the frog F to effect stoppage through a lever T<2>. Trip catch mechanism at the opposite side of the loom is connected to the lever T2 by a rod T5.
Patent GB-882229-A (GB)
Title: Improvements relating to curtain gliders
IPC: A47H15/04
Filed: 1957-05-23
Abstract: 882,229. Suspending curtains. JOHNSON, F.D. May 22, 1958, [May 23, 1957],No. 16333/57. Class 52(5) In a curtain glider 11 non-metallic rod or tube sections 16 are non-rotatably and coaxially mounted on metal rail-engaging members 15. The sections 16, preferably of nylon, are pressed or moulded on the members 15 which are serrated or of non-circular section or pressed up as shown at 18 from the sheet metal sides 19 of the glider 11 shown in Fig. 2. According to the Provisional Specification nylon rod or tube sections are located in coaxial apertures in the glider.
Patent GB-321943-A (GB)
Title: Improvements in and relating to the treatment of ores
IPC: C22B47/00
Filed: 1928-06-19
Abstract: 321,943. Dicker, S. G. S., (Bradley-Fitch Co.). June 19, 1928. Divided on 319,392. Manganese oxide and sulphate and salts thereof in general. - The manganese content of raw materials is rendered susceptible to selective leaching by a solution of a salt such as an ammonium salt by subjecting the material to the action of a reducing gas and added water vapour at a temperature not exceeding 850‹ C., and cooling the product under non-oxidizing conditions, as by means of a countercurrent of reducing gas or quenching in water or the leaching solution. Iron present may be rendered insoluble and magnetic by conducting the heat treatment at a temperature not exceeding 450‹ C. in the presence of water vapour, which may either be added, or be formed in the process. The requisite temperature may be obtained by using a combustible gas as reducing agent and adding sufficient air for partial combustion: the necessary water vapour may be formed in this way when the gas contains free or combined hydrogen. Specifications 284,098, 319,392, and 319,605 are referred to.
Patent GB-1368538-A (GB)
Title: Surveillance unit for scaning an area under surveillance
IPC: G08B15/00
Filed: 1972-04-10
Abstract: 1368538 Mounting lamps TELESPHERE TECHNOLOGY Inc 10 April 1972 [23 April 1971] 16368/72 Heading F4R [Also in Division G4]  A surveillance unit comprises a sub-unit 9 for examining an area under surveillance, means 11, 12, 21 for coupling the sub-unit 9 to a tilting motor 4 and a panning motor 1 and a preferably spherical enclosure 14, 16 surrounding the subunit 9 and tilting motor 4 and arranged to pan and tilt with the sub-unit 9. A searchlight may be directed through one of the ports. The subunit 9 may include a TV camera, a smoke or heat sensor, an ultrasonic intrusion sensor, a remotely controlled film time lapse camera or a wireless battery-operated microphone. A port 22 in the hemisphere 14 may be covered with a perforated shield 31 and aligned with the input port 9<SP>1</SP> of the sensor.
Patent GB-145265-A (GB)
Title: Improvements in or relating to coal or like containers
IPC: F24B15/04
Filed: 1919-06-30
Abstract: 145,265. Poore, W. E. June 30, 1919. Seats combined with coal boxes.-The lid of a coal box may be upholstered for use as a seat.
Patent GB-573149-A (GB)
Title: Improvements relating to the production of magnesium
IPC: C22B26/22
Filed: 1942-11-20
Abstract: 573,149. Magnesium. PRYTHERCH, W. E. Nov. 20,1942, No. 16433. [Class 82 (i)] Relates to a process for the production by thermal reduction of magnesium-oxide containing material, without loss of magnesium by secondary reactions, by using a mixture of reducing agents. The reducing agents are of such nature and in such proportion to. each other that, by reaction of their oxidation products upon each other, loss of magnesium oxide by formation of magnesium-containing residues is essentially avoided. The reducing agents may comprise a calcium - bearing material, such as calcium, calcium carbide, or calcium silicide, and either ferro-silicon or ferrosilicon-aluminium. The materials for the reduction, all in finely - divided form, are thoroughly mixed and briquetted, and heated under sub-atmospheric pressure to a sufficiently high temperature to liberate magnesium vapour, which is condensed to metallic magnesium. The yield is improved by the addition of a fluoride, such as calcium or magnesium fluoride. Self-contained reaction and condenser units as described in Specification 545,312 may be employed in carrying out the.process.
Patent GB-125015-A (GB)
Title: Improvements in and relating to Liquid Sealed Furnaces.
Inventor: BOLTON DAVID COLFOX
IPC: F27D99/00
Filed: 1918-10-10
Abstract: 125,015. Bolton, D. C. Oct. 10, 1918. ing-chamber e to allow escape of steam &c., and an extension piece f at the lower end of the retort dips into a second. liquid seal. The parts of the Charging.-An article to be fed into an inclined retort and heating-chamber a is inserted through the liquid seal h on to a plate m, which is raised to bring it to the level of the entrance to the retort. The article is then transferred into the retort by a pusher o. A second pusher p may be provided to feed the articles down the retort. A non-return valve is fitted in the wall of the chargseals in contact with the liquid are made or lined with material which will not corrode, such as copper alloy, glazed bricks, or wood.