baber/WOPTO huggingface dataset:
Patent GB-535989-A (GB)
Title: Improvements in or relating to electric immersion heaters
IPC: H05B1/02
Filed: 1940-04-03
Abstract: 535,989. Electric immersion heaters. STEVENS, A. H. (Power Patents Co.). April 3, 1940, No. 6035. [Class 39 (iii)] [Also in Groups II, V and XXXVII] A heating wire 18 is wound upon a refractory tube 14, preferably of zircon with 6 per cent. of orthophosphoric acid. The wire may be an iron alloy containing 30-40 per cent. chromium, 5-8 per cent. aluminium, and 0-5 per cent. cobalt. To protect the wire, an oxide film may be formed by applying a heating current to it in an oxidizing atmosphere. A thin refractory coating 24 is then applied, consisting of zircon with a binder of 5 per cent. phosphorus pentoxide and 2 per cent. chromic acid. This coating is hardened by baking at 600‹F. The lead-in wires 26 are passed through porcelain tubes 32 which are embedded in a refractory filling 34 similar to the coating 24. The heater is inserted in a metal casing 22, and the intervening space 36 filled with a heat-conducting powder, such as ferrosilicon, which has been heated to 2350‹F. in an oxidizing atmosphere to provide an oxide coating on the grains, and thereby improve the di-electric properties. The powder is compacted by vibrating the casing during filling. Current is then passed through the heating resistance for drying purposes, and a sealing plate 38 is then welded to the casing. The unit is clamped to a tank 11 by means of a nut 40 engaging a screwed cap 42, and is located within a cylinder 56 open at one end and having inwardly-extending ribs 62, Fig. 2, to provide passages for the circulation of liquid over the heater. One or more apertures 60 are provided in the cylinder 56. A thermal switch 28 is actuated by vapour pressure of a volatile liquid in a bulb 72 connected to a diaphragm chamber 66. Movement of the diaphragm actuates a leaf spring 76 which operates the switch through a pin 86. The bulb 72 may contain water, alcohol, ether, or wateralcohol mixtures, e.g. ether may be used in an apparatus for keeping lubricating oil at a temperature of 130-140‹F.
Patent GB-569135-A (GB)
Title: Improvements in or relating to collars or rings for attachment to pipes or rods
IPC: B21D39/04
Filed: 1943-04-15
Abstract: 569,135. Jointing by stamping. AUTOMOTIVE PRODUCTS CO., Ltd., and BROCK, W. H. J. April 15, 1943, No. 6068. [Class 83 (iv)] [Also in Group XXVIII] An abutment collar for securing to a pipe or rod, particularly for jointing, comprises a main portion 11 having a, cylindrical surface fitting the tube 15, a skirt portion 12 spaced from the tube, an annular flange 13 on the skirt portion directed towards the tube, and a deep annular groove 19 between the main and skirt portions. The main portion may be reduced for part of its length to provide a shoulder 16. The skirt portion of the collar is deformed by relative axial movement of a die 26 engaging the shoulder 16 and a die 27 having a tapered bore 33, until the surface 17 of the skirt engages the tube and the flange 14 is forced into the tube or into a coincident groove in the tube. The secured collar has a conical face 23 which can form part of a tapered spigot-and-socket joint. The securing of the collar may be effected by the coupling nut and tapered socket of the joint. A collar may be so shaped as to be adapted to be secured inside a tube..
Patent GB-802123-A (GB)
Title: Improvements in or relating to jet nozzle arrangements for jet-reaction-propulsion purposes
Inventor: LEEDHAM HARRY WILLIAM THOMAS
IPC: F02K1/48
Filed: 1956-02-27
Abstract: 802,123. Jet thrust reversing apparatus. ROLLS-ROYCE, Ltd. Feb. 19, 1957 [Feb. 27, 1956], No. 6086/56. Class 4. [Also in Group XXVI] In a jet thrust reversing mechanism wherein the jet nozzle is formed with circumferentiallyspaced axially extending channels to suppress jet noise (see Group XXVI) each gas channel 13c formed by radially extending walls 12a boxed in pairs by an inner wall 12b and a rear wall 12c and a tongue 10a formed on the jet pipe 10 is provided with a gas outlet which communicates with a port 14a in a rotatable sleeve 14 driven by an electric motor 15. The rear end of sleeve 14 is formed with pieces 18 which, when the sleeve is rotated to open the ports 14a, blank off the outlet ends of channels 13c. In addition, sliding plates 19 are each connected by a link 20 to sleeve 14 so that they are moved radially inwards and outwards by rotation of the sleeve to close the central part of the jet pipe orifice, as shown in Fig. 2a. The ports 14a communicate with ducts 23 formed between the jet pipe 10 and nacelle fairing 11, and these are closed by flaps 25. In a further embodiment, the axially extending ducts meet on the axis of the jet pipe at the rear end of the nozzle so that blanking members such as pieces 18 are alone sufficient to close the nozzle outlet when the sleeve 14 is rotated. Parts of the mechanism in contact with the propulsion gases may have internal passages for conveying cooling air. Specification 768,553 [Group XXVI] is referred to.
Patent GB-127613-A (GB)
Title: Improvements in Regulating the Speed and Power of Internal Combustion Engines.
Inventor: RICARDO HARRY RALPH
IPC: F01L13/00
Filed: 1917-04-30
Abstract: 127,613. Ricardo, H. R. April 30, 1917. Regulating.-The weight of the charge drawn into the cylinder of an aircraft engine is adjusted according to atmospheric pressure by holding open the admission valve during part of the compression stroke for periods which increase as the atmospheric pressure increases. Suitable mechanism for effecting the regulation comprises a barometric chamber F which slides a cam C of variable contour beneath the valve spindle E'. The valve and its seating have preferably a cylindrical extension B to effect a rapid cut-off.
Patent GB-525628-A (GB)
Title: Improvements in or relating to television transmitting and receiving systems
IPC: H04N7/04
Filed: 1939-02-24
Abstract: 525,628. Television; duplex wireless signalling. KALLMANN, H. E. Feb. 24, 1939, No. 6123. [Classes 40 (iii) and 40 (v)] Vision and accompanying sound are transmitted by one carrier which is modulated in both frequency and amplitude. Sound signals after amplification at 5, 6, Fig. 1, are frequency modulated at 7 on to a carrier from 4. The resultant carrier passes through an amplitude limiter 8 and at 9 receives vision and synchronizing signals as an amplitude modulation, and is transmitted at 14. The signal is received at 21, Fig. 2, amplified at 22, and passed through a detector and amplifier 25 to the vision receiver 23. The presence of frequency modulation in this channel does not affect the picture. The sound channel passes through an amplifier 30 to an amplitude limiter 31 which removes the vision signal, and also the synchronizing signals if they are not constituted by a cessation of the carrier and thence to a frequency detector 32, which may be constituted by balanced diodes 33, 34, Fig. 3, associated with circuits 35, 36 tuned above and below the normal carrier frequency. The use of frequency modulation for the sound channel renders it less liable to interference from motor vehicle ignition systems. If synchronizing signals are constituted by cessation of carrier then a low-pass filter 37 will remove the short duration line pulses. However long duration frame pulses could not be removed, so frame pulses can be made of the same duration as line pulses, but transmitted out of phase with the line pulses, for example “ and ¥ of a line interval away from a line pulse in an interlaced scanning system. Two associated transmissions can be made on one carrier by using crossed polarized aerials. Specifications 489,094, 489,102, 504,766 and 505,079 are referred to.
Patent GB-390305-A (GB)
Title: A method of treating metal-coated wire
IPC: C25D5/50
Filed: 1932-03-01
Abstract: 390,305. Electroplating. FRASER, J. G., 321, 7th Street East, Owen Sound, Ontario, Canada. March 1, 1932, No. 6160. [Class 41.] Wire is coated with copper or copper alloy by passing it through an acid bath 2, a rinsing bath 3, an electrolytic coating bath 4, and a washing bath 5, and is then passed through a chamber 8 heated to 500-900‹ F., the wire being maintained entirely out of contact with the chamber or other parts just prior to and during its passage through the chamber. The chamber 8 contains air or a gas such as carbon monoxide which may be produced by a layer of charcoal on the bottom 10 of the chamber which is heated by a furnace 12. Several wires may be treated simultaneously as shown in Fig. 3, the wires being dried and heattreated without being burnished.
Patent GB-306287-A (GB)
Title: Improvements relating to smoking pipes, particularly for use with dental plates
IPC: A24F1/16
Filed: 1928-02-28
Abstract: 306,287. Troup, J. D. Feb. 28,1928. Tobacco pipes. - A pipe suitable for use with dental plates has a short stem with a wide bore and a thin wall to ensure cooling of the smoke. The mouthpiece B is fitted with a tubular extension D of the bore and with an outer tube C closed at the end nearest the bowl and perforated at the mouthpiece end, in order to give the smoke a circuitous travel. Reference has been directed by the Comptroller to Specifications 16552/88, 979/06, 6618/08, and 116,650.
Patent GB-559329-A (GB)
Title: Method of treating fibres, yarns or fabrics of glass
IPC: C03C25/475
Filed: 1942-05-08
Abstract: 559,329. Treating glass fibres with liquids; dyeing processes ; coated fabrics. BLEACHERS' ASSOCIATION, Ltd., BARRETT, F. L., and CHARLTON, C. E. H. May 8, 1942, Nos. 6203/42 and 7076/43. [Classes 2 (iii) and 15 (ii)] [Also in Group VIII] Fibres, yarns, or fabrics of glass are coloured by first producing upon the individual fibres a thin, solid, resinous, or cellulosic film not containing added colouring matter but receptive of dyestuffs, and then dyeing or printing them. The film-forming substance may be a natural or synthetic resin, synthetic resin condensate, cellulose ester or ether, or solution from which cellulose may be regenerated. Phenol-formaldehyde, urea- or thiourea-formaldehyde, or polyvinyl resins may be used. The glass fibres may be treated in the form of separate fibres or as yarns, or woven fabrics. A solution of viscose or of cellulose in cuprammonium solution may be used, the cellulose being regenerated and deposited on the glass fibres. A solution of glycol cellulose may be used, the cellulose being precipitated on the fibres. Cellulose acetate or nitrate may be applied as a solution in a volatile solvent. After drying, the cellulose may be regenerated by hydrolysis if desired. The material may be treated with a synthetic resinous intermediate condensate or the components of a synthetic resin and the condensation may be completed in situ, e.g. by heating in presence of a catalyst. Resins of a basic character such as ureaformaldehyde may be used if the glass fibres are to be dyed with acidic dyes. Uniform or local dyeing methods may be used, e.g. resist or discharge dye printing. The thin resinous film may be applied to local areas of a glass fabric to serve as a mordant print. In an example, a solution of a urea-formaldehyde product is obtained by boiling a mixture of urea, formaldehyde, and ammonia solution, cooling, adding a solution of ammonium dihydrogen phosphate, and diluting with water. Glass fabric is padded with the solution, dried, and baked at 300-350‹ F. The fabric is then dyed with vat, indigosol, hydron, sulphur, direct, acid, basic, or azoic dyes. The affinity for dyes, e.g. those of the acid class, may be improved by incorporating appropriate ingredients in the resin, e.g. di-cyandiamidine. In another example, a resin pre-condensate is obtained by boiling maize starch with dimethylol urea and water for a few minutes. Ammonium phosphate may be added. Glass fabric is padded with the solution, dried, baked, and then dyed. The Provisional Specifications comprise also processes in which the glass fibres are coated with a thin film prior to the application of waterproofing agents such as aluminium salts, fluorescent substances, rayabsorbent substances, or fillers such as starch, china clay, or white pigments.
Patent GB-654942-A (GB)
Title: A trussed arch
IPC: E04B7/08
Filed: 1947-03-05
Abstract: 654,942. Roof trusses; bridges; centering for arches. SHUSTIKOV, S. A. March 5, 1947, No. 6232. [Classes 20(i), 20(ii) and 20 (iv) ] In an arch framework, e.g. of wood, steel or reinforced concrete for hangars or bridges, comprising elementary arch systems, whose transverse dimension is small compared with the span of the arch, placed side by side and each having intersecting diagonals and parallel top and bottom chords, the diagonals abut at their ends against and are fixed to purlins thus forming a unified three-dimensional structure. The circular timber arch shown in Fig. 8 is supported at each end by piles 13, 14 and transverse beams 16. The diagonals 20 are clamped at their intersections by lugs 24 connected by bolts 25, Fig. 10, and are bolted to upper and lower purlins 22, 23 connected by tie rods 21. The chords and diagonals forming the elementary arch systems may be packed close together across the arch or may be arranged in groups one of which is shown in Fig. 10. The top and bottom chords may comprise tie rods.
Patent GB-685315-A (GB)
Title: Improvements in or relating to snow ploughs
IPC: E01H5/06
Filed: 1950-03-14
Abstract: 685,315. Snow ploughs. BARNETT, S. H. March 5, 1951 [March 14, 1950], No. 6354/50. Class 107 A snow plough for clearing the road adjacent the kerb is connected to a bar 3 attached to the front of a vehicle and has a plough 1 floatably carried therefrom by the arm 2. The plough has a flat side 12 formed to travel alongside the kerb and a deflector plate 13 to push the snow away from the kerb. The plough is carried on a pivot 10 provided with a spring 20 and in like manner arm 2 and strut 6 are pivoted on pins 5. Springs 7 allow the plough to yield laterally if it meets with an obstruction. The leading edge of the plough is radiused to ride over obstructions.
Patent GB-974128-A (GB)
Title: Kanamycin complex salts
IPC: C07H15/236
Filed: 1962-02-20
Abstract: Complex salts of kanamycin and a water-soluble salt of copper, nickel, cobalt, zinc, magnesium or iron, particularly a sulphate or a hydrochloride are prepared by dissolving kanamycin in water and adding the water-soluble salt thereto. The complex salt may be recovered from the solution by evaporating to dryness or by precipitation with a water-miscible organic solvent.
Patent GB-803801-A (GB)
Title: Method of purifying the exhaust air from viscose manufacturing plants
IPC: B01D53/48
Filed: 1956-03-01
Abstract: Sulphur is produced in a process for removing hydrogen sulphide from viscose plant exhaust air, which process comprises passing the exhaust air at a velocity of at least 30 cm./sec. through an aqueous alkaline ferric hydroxide suspension containing at least 7.5 mols., preferably 30 or more mols. of ferric hydroxide per mol. of hydrogen sulphide.  In practice a temperature of at least 15 DEG  C., preferably 30-40 DEG  C. is employed.  The ferric hydroxide may be produced by precipitation of an aqueous ferrous sulphate solution with lime.  The suspension preferably has a concentration of 2-5 gm./l of ferric hydroxide, and preferably contains more than 0.2 gm./l of sodium carbonate.  The sulphur formed is removed by flotation.  Air containing 0.8-1 gm. of hydrogen sulphide may be passed through a plant having a capacity of 75-150 cu.m. at a velocity of 170 cm./sec. and a residence time of at least 5 seconds. Air containing 15 gm. of hydrogen sulphide may be treated at a velocity of 30 cm./sec. and a residence time of 52 seconds.  Carbon disulphide is removed from the hydrogen sulphide-free air in known manner.ALSO:Sulphur is produced in a process for removing hydrogen sulphide from viscose plant exhaust air, which process comprises passing the exhaust air at a velocity of at least 30 cm./sec. through an aqueous alkaline ferric hydroxide suspension containing at least 7.5 mols., preferably 30 or more mols., of ferric hydroxide per mol. of hydrogen sulphide.  In practice a temperature of at least 15 DEG C., preferably 30-40 DEG  C., is employed.  The ferric hydroxide may be produced by precipitation of an aqueous ferrous sulphate solution with lime.  The suspension preferably has a concentration of 2-5 gm./l. of ferric hydroxide, and preferably contains more than 0.2 gm./l. of sodium carbonate.  The sulphur formed is removed by flotation.  Air containing 0.8-1 gm. of hydrogen sulphide may be passed through a plant having a capacity of 75-150 cu. m. at a velocity of 170 cm./sec. and a residence time of at least 5 sec.  Air containing 15 gm. of hydrogen sulphide may be treated at a velocity of 30 cm./sec. and a residence time of 52 sec.  Carbon disulphide is removed from the hydrogen sulphide-free air in known manner.
Patent GB-878160-A (GB)
Title: A stepped cyclic programme control device
IPC: G05G21/00
Filed: 1959-02-25
Abstract: 878,160. Machine tool details. EMAIN, J. Feb. 25, 1959 [March 27, 1958], No. 6514/59. Class 83 (3). Means for controlling a series of operations in a machine comprises a plurality of axiallyspaced angularly-settable elements 13 and a plurality of angularly - spaced axially-settable elements 30 on a shaft 21, and stepping means 42 for rotating the shaft to present the elements to sensing stations. The shaft 21 is supported by a centre 24 on a bracket 25. The ratchet 42 is stepped round by an adjustable-stroke lever operated through a chain 57 and a rod 67 by a pneumatic device 69 controlled by an electromagnetically - operated valve 15. The shaft is positioned by a plunger 33 engaging recesses in the disc 29 which carries the elements 30. The cams 13 are screwed to carriers 36 and operate plungers or valves to control machining operations. Instead of, or in addition to, the cams 13, electrical contact discs may be carried by the shaft 21 or a cam 40 for energizing electric motors &c. The elements 30 are adjusted by set-screws 31 and act successively to determine the time for each dwell of the shaft 21. When the shaft is indexed, a weight 93 causes a constant velocity feed of a switch unit 94 under the control of an hydraulic dashpot device having a plate 88 partially covering passages 87 in a piston 86. When a switch-operating lever 95 engages a stop 30, the valve 15 is actuated. The pneumatic device 69 is thus operated to index the shaft 21 and the device 86 is returned to its initial position by an abutment 71 on the ratchet-operating rod 67, the plate 88 then yielding against a spring 89. By omitting one of the pins 30, the machine may be stopped after one rotation of the shaft. In a modification, the constant feed of the switch unit 94, Fig. 8, is provided by a cam 125 which is clutched intermittently to a constantly-rotating shaft.
Patent GB-953842-A (GB)
Title: An edge guide device for use in the manufacture of tubing from strip material
IPC: B21C37/08
Filed: 1963-02-18
Abstract: 953,842. Bending; welding by pressure. ABBEY ETNA MACHINE CO. Feb. 18, 1963 [Dec. 3, 1962], No. 6516/63. Headings B3E and B3R. Apparatus for forming metal strip into a partial tube, which is then seam welded, and effecting the final forming by a series of spaced fin rolls adjacent the welder includes a series of sets of rollers along which the edges of the partial tube travel, each set of rollers occupying substantially the whole of the space between adjacent fin rolls and/or the final fin roll and the welding position and the arrangement being such that the rollers contain the edges of the partial tube and prevent distortion thereof during the final forming. The final forming of partially formed tube T is effected by three fin rolls F, the tube then advancing to a welding station to weld the free edge E together. Between adjacent fin rolls F and, if necessary, between the end fin roll F and the welding station, the edges E are prevented from buckling by their engagement with sets of rollers 23 supported by a carriage vertically adjustable in a frame 14 for different diameter tubes and angularly adjustable to conform to the inclination of the advancing tube.
Patent GB-1039996-A (GB)
Title: Enamelled cooking vessels and method of manufacturing them
IPC: C25D5/02
Filed: 1963-02-18
Abstract: An enamelled cooking vessel made from sheet steel carries, on at least the outer surface of its base, a covering layer consisting of a mixture of an enamel with at least one metal powder. Specified metals are aluminium, aluminium alloys, copper and brass.  The metal-containing layer may be formed directly on to the steel surface or on to a base layer of conventional enamel, or two metal-containing layers may be superimposed.  The metal-containing layer may also be applied to inner and/or outer surfaces of the vessel other than its base, and is preferably applied by spraying.  In one embodiment (Fig. 1, not shown) a conventional enamel base 5 is applied to the steel surface of vessel 1, dried and fired.  A covering layer of metal-containing enamel 7 is then applied to those surfaces to be treated according to the invention, the remaining surfaces being covered with a further layer 6 of conventional enamel.  The covering layers are dried and fired in a single operation. The metal-containing enamel may comprise feldspar, quartz, soda, borax, clay and aluminium of particle size 0.1-0.25 mm.  A formulation for use when the metal-containing enamel is applied directly to the steel surface comprises the above ingredients plus quartz sand and sodium nitrite.  In a further embodiment, the metal-containing enamel layer is formed by spraying a suspension of the metal on to a conventional enamel-covered steel surface.  On drying and firing, a transition layer is formed so that the resulting steel vessel 1 (Fig. 6, not shown) is coated with conventional enamel 5, and a metal-containing enamel layer 71 gradually merging into a layer 711 of almost pure metal.  A specified metal suspension contains aluminium powder, clay and water.
Patent GB-312971-A (GB)
Title: Improvements in or relating to electric discharge tubes
IPC: H01J21/02
Filed: 1928-03-03
Abstract: 312,971. Allen, J. March 3, 1928. Vacuum tubes.-A discharge device has a cathode 26, a plate 11, a positively charged electrode 18 arranged at one side of the plate, a negatively charged electrode 20 arranged at one end of the plate, and a negativelycharged electrode 22 arranged behind the cathode. The cathode may be heated by passage of current through it, or, as shown, by conduction from crucible material 28 heated by a flame; dielectric material 27 separates the cathode 26 and electrode 22. The current produced between the electrodes 26, 11 is measured by a galvanometer 14. In a modification the electrode 22 is omitted and the cathode extends through the container and is in contact with crucible material heated by a flame.
Patent GB-146547-A (GB)
Title: Improvements in or relating to optical projection apparatus
IPC: G03B21/60
Filed: 1918-04-20
Abstract: 146,547. Brown, T. April 20, 1918. Optical-projection apparatus. - For producing relief effects, a front screen D, Fig. 1, of green semi-open fabric is mounted within a frame C in front of a rear screen H coloured red and extending at the floor to the front screen. Two slides are projected in complementary colours, the one, Fig. 2, projected in red comprising the proscenium portion c, which is projected on the border C of the fabric screen, and a scenic portion R which is projecetd through the screen D on to the rear screen. The other lantern slide or film s, Fig. 3, contains the living or stationary figures u, v on a dark background T, and is projected on to the front green screen D. The front screen D may not extend to the top of the frame C, leaving an opening to project a black and white or a coloured strip of the film or slide on to a corresponding strip of the rear screen, which is not coloured, or is painted grey. The front green screen may be adapted to an existing proscenium and stage by placing it at the proscenium opening and illuminating the stage floor furniture and back cloth with complementary coloured light. The screens used may be made to take a curved shape.