baber/WOPTO huggingface dataset:
Patent GB-1497436-A (GB)
Title: Apparatus for the detection of volatile organic substance
IPC: G01N27/64
Filed: 1975-03-11
Abstract: 1497436 Analyzing gases electrically PYE (ELECTRONIC PRODUCTS) Ltd 11 March 1975 10054/75 Heading G1N [Also in Division F2] Volatile organic substances in a gaseous mixture are detected by absorbing the substances in a cold filament, heating the filament to release the substances and detecting the released substances with an electron capture detector. Initially filament 9 in duct 8 is cold, pump 22 is off and valve 29 is closed. Since the pressure in valve cavity 2 and hence duct 8 is then above ambient due to the flow of inert gas e.g. from vessel 34 valve 5 is closed to seal sample gas inlet 4 and ball 17 is lifted off its seat to allow the argon to escape from duct 8 via chamber 16 and tube 20 through leakage paths in pump 22. At the same time argon from vessel 34 also flows through restrictor 33, passageways 27, 25, chamber 14 in which is situated electron capture device 23 and into duct 8 where it joins the primary argon stream. Pump 22 is then switched on so that valve 17 is opened and the pressure in duct 8 and cavity fall below atmospheric. Valve 5 lifts off and a sample of gas is drawn in through probe 3 along duct 8 and exhausted via pump 22, any organic volatile substances being absorbed by the filament 9. The argon flow through passageway 13 prevents any of the sample and substances not adsorbed on filament 9 entering chamber 14. When a sufficient sample has been drawn through the apparatus pump 22 is switched off, ball 17 closes passage 15 due to spring 18 and valve 5 closes due to the rise in pressure in duct 8 and cavity 2 caused by the continuing flow of argon. After a time sufficient for the argon flow to sweep any remaining traces of sample air from the duct 8 solenoid 31 is energized to open valve 29. There is now a direct passage to atmosphere via passageway 13, cavity 14, passageway 25 and tube 28 and filament 9 is heated so that any adsorbed volatile organic substance is driven off and is carried by the primary argon flow through the passageway 13 into chamber 14 to reach electron capture detector.
Patent GB-540866-A (GB)
Title: Improvements in and relating to means for connecting metal members
IPC: F16B12/36
Filed: 1940-06-10
Abstract: 540,866. Stud and socket fastenings. COLDAIR, Ltd., and MILLET, A. June 10, 1940, No. 10094 [Class 44] Thin sheet metal parts, for example furniture such as shelving, are connected by studs or units having enlarged heads 1 and tapering ends 2 leading to a groove or shank 3. The length of the shank is slightly greater than the combined thickness of the sheets and the diameter engages the holes therein with clearance, the maximum diameter of the head 2 being slightly greater than the hole diameter. The units are pressed into position, the metal of the sheets snapping into place behind the head 2. The sheets may be slit radially round the hole to increase the resilience.
Patent GB-159152-A (GB)
Title: Device for securing the handle to the body portion of brooms, brushes and similar articles
IPC: B25G3/12
Filed: 1920-04-12
Abstract: 159,152. Kampfer, F. Feb. 17, 1920, [Convention date]. Fixing by detachable socket pieces with barbs and clamping - devices.- A fixing-device for the handles of brooms &c. comprises two pieces hinged together between their ends and operable by a wedge to contract one end so as to grip the handle and simultaneously expand the other end in the socket hole of the broom stock &c. Two semi-tubular pieces c, d are hinged together at e, the lower ends being provided with teeth or projections c<2>, d2 and the upper ends with internal teeth c<1>, d'. A wedge f, which may be attached by a chain, is driven in between the parts to expand the lower end in the socket a<1> and simultaneously clamp the upper end on the handle b.
Patent GB-407831-A (GB)
Title: An improved terminal fitting or connector for spark plugs or the like
IPC: H01T13/04
Filed: 1933-04-05
Abstract: 407,831. Couplings. DAWSON, L. B., 27, Chancery Lane, London. April 5, 1933, No. 10180. [Class 38 (i).] Connection between a sparking-plug H and the supply lead C is made by means of a helically wound resilient wire 1 pushed on to the lead at one end, and screwed on to the plug terminal E at the other. The helix may be tapered or reduced in diameter at one end, or may be flared at 3, 4, Fig. 5 to adapt it for use with terminals E of various diameters. Connection to the lead may be made by turning back the strands S of the conductor outside its insulation, or by providing the helix with a radially inturned point to penetrate the insulation. An indiarubber cover J contracted or shaped at its ends 5, 6 may enclose the joint.
Patent GB-1020042-A (GB)
Title: Plasma flame generator
IPC: H05H1/48
Filed: 1963-03-14
Abstract: 1,020,042. Arc blow-torches. HITACHI SEISAKUSHO KABUSHIKI KAISHA. March 14, 1963 [March 14, 1962], No. 10188/63. Heading H5H. [Also in Division H1] An arc source, e.g. for use as a light source for spectral analysis, comprises a hollow electrode 1 having a nozzle 2; a rod electrode 4; means for creating an arc between these electrodes ; and means, e.g. the bar magnet 6, for creating a magnetic field to fix one end of the arc to a given spot on the surface of the hollow electrode. A stream 7 of a carrier gas, e.g. argon or nitrogen, is passed through the electrode 1, and a second gas stream 8 carries a sample, in powder or spray form, into the arc. The magnet 6 fixes the arc root so that chemically active components of the sample do not come in contact with the heated electrode wall at the arc root, and also so that a constant intensity of light source is obtained. The permanent magnet 6 may be replaced by a coil, and the light output of the device may be modulated by the coil.
Patent GB-454926-A (GB)
Title: Improvements in the manufacture of alloys
IPC: C22B9/10
Filed: 1935-04-03
Abstract: In a method of treating a molten metal or alloy with one or more highly reactive substances in such a way as to ensure the presence of only a desired amount of the said substance or substances in the metal or alloy, a bath of the molten metal or alloy is treated with the said substance or substances or an equivalent substance or both in a total amount equivalent to an excess of said substance and the excess is removed or neutralized in such a way as not to introduce any harmful impurities into the melt.  The desired amount of the said substance &c. is then added and the metal cast.  An agent to protect the added substance from possible chemical reactions such as oxidation, the residue of which would not be objectionable in the finished alloy may be added at the same time as the second addition of the added substance.  The excess of the added substance may be removed by oxidation or neutralized by the addition of a substance such as phosphorus, sulphur or arsenic capable of combining with the excess to form an innocuous compound, or may be partly oxidized and partly neutralized.  As applied to the introduction of calcium into nickel alloys, a nickel alloy containing 20 per cent of chromium is prepared by melting nickel with about 0,5 per cent of manganese and 0,2 of silicon and the required amount of chromium added.  When the charge is molten, 0,5 per cent of a calcium silicon alloy containing 25 per cent of calcium is added. The amount of calcium added may be reduced by the addition of another highly-reactive element such as aluminium, zirconium, cerium or lithium.  After a period of five minutes, the surface of the melt is exposed to the atmosphere for 2 to 3 minutes and the excess of calcium is consumed by oxidation. When the "break" disappears, the molten metal is poured into a ladle and 0,20 per cent of the same calcium-silicon alloy is added.  If the molten metal is as likely to be exposed to the atmosphere, an addition of 0,15 per cent of cerium, acting as a protecting agent is made. Such an addition may precede, accompany or follow the addition of calcium and instead of cerium, aluminium, lithium or zirconium may be used.  The invention may be applied to alloys other than nickel alloys and instead of calcium or cerium, other elements such as the other alkaline earth metals, and the other rare earth metals, e.g. thorium, hafnium, beryllium, niobium, tantalum, titanium, lithium and zirconium.  Specification 311,799, [Class 82 (i)], is referred to.
Patent GB-1221406-A (GB)
Title: Device for piling bobbin tubes into magazines
IPC: B65H67/06
Filed: 1969-02-27
Abstract: 1,221,406. Orientating bobbins. ELITEXZAVODY TEXTILNIHO STROJIRENSTVI GENERALNI REDITELSTVI. 27 Feb., 1969 [28 Feb., 1968], No. 10435/69. Heading B8S. Bobbins 2 having their ends of differing diameters fall sideways down shoot 4 and engage with and between stops 5 and 6 positioned at the sides of the shoot. The stops are positioned in pairs, the individual stops of which are separated by a distance greater than that of the smaller diameter of the bobbin, and smaller than the larger diameter of the bobbin. In this way the larger diameter of the bobbin fails to pass through the respective pair of stops, and the bobbin then pivots with its smaller diameter forwards to slide down the shoot into magazine 9 where the bobbins are piled horizontally and uniformly as shown.
Patent GB-1032493-A (GB)
Title: Control circuits for electric discharge devices
IPC: B23K11/26
Filed: 1964-03-12
Abstract: 1,032,493. Supply systems for resistance welding. SQUARE D. CO. March 12, 1964 [March 25, 1963], No. 10444/64. Heading H2H. An A.C. load, such as a transformer 32 supplying a resistance circuit 16, 18, 44, is controlled by a pair of reverse-parallel connected ignitrons 12, 14 having an anode firing circuit comprising an auto-transformer 70 and silicon controlled rectifiers 54, 64 connected as shown. These rectifiers are fired at desired instants by a circuit arrangement comprising a conventional timer 10, as for example in Specification 976,995, which supplies a signal pulser 22 connected to firing circuits comprising members 84, 86, 88. . . 102. Rapid response is obtained by low short circuit impedance between terminals 72, 74, and other transformer arrangements may be used to reduce the voltages across rectifiers 54, 64, the back-toback rectifiers 80, 82 acting as surge suppressors.
Patent GB-1185815-A (GB)
Title: Improvements in or relating to Quadrature Hybrid Couplers
Inventor: BEURRIER HENRY RICHARD
IPC: H01R12/04
Filed: 1969-02-27
Abstract: 1,185,815. Directional couplers. WESTERN ELECTRIC CO. Inc. 27 Feb., 1969 [28 Feb., 1968], No. 10450/69. Heading H1W. A directional coupler comprises coupled inductors of inductance L formed from identical strip conductors and together forming a capacitor of capacitance C, the power-division ratio of the coupler being unity at an -angular frequency # 0  = 1/#LC. The coupler differs from known types of strip-line couplers insofar as it has a length less than one quarter wavelength at the frequency # 0 . In the form shown in Fig. 1, the C-shaped strips 16, 17 are bonded to opposite sides of a dielectric member 15 and make contact with four strip transmission lines 11, 12, 13, 14 which share a common dielectric 25 and ground plane 26. In order to compensate for the leakage inductance of the coupler, the lines 11, 12, 13, 14 may be provided with short extensions 21, 22, 23, 24 which provide additional capacitance. Alternatively, the additional capacitance can be provided by extending the ends of the strips 16, 17 beyond the plane of the transmission lines 11, 12, 13, 14. The C- shaped coupling unit 15, 16, 17 may be one of a series of alternative dismountable units and may fit into an aperture in the member 25 where it is held in place by clips. Alternatively, the region where the four lines 11, 12, 13, 14 terminate may be covered by a circular dielectric disc having a slot furnished with contacts and retaining clips for accommodation of the edge of coupling unit 15, 16, 17 (Figs. 12- 15, not shown). In an alternative form of this type of coupler (Fig. 20), the C-shaped inductors 190, 191 are air-spaced and are supported by separate dielectric members 192, 193 having tongues which extend through a slot in the dielectric layer of the feeder lines. The spacing is maintained by a block 194 clamped between the aforementioned tongues. The coupler may incorporate a water cooling system 210. A rearranged order of the terminals of the coupler may be obtained by using a C-shaped coupling unit in which the transverse (top) limb of the C has been twisted through 180 degrees (Figs. 16- 18, not shown). In the modification of Fig. 4, the feeder lines 46, 47, 50, 51 are divided into two separate systems having, respectively, dielectric layers 49, 52 and ground planes 48, 53. The systems are coupled by the coupling unit 41, 42 43 which is electrically similar to those described above. In another modification (Fig. 5A), the feeder lines 61, 62, 64, 65 share a common ground plane 67 and are supported upon dielectric layers 63, 66 covering opposite sides of the ground plane. The coupling structure is arranged in a circular aperture 80 formed in the transmission line system and consists of straight strips 70, 71 separated by a dielectric member 72. In a modification of this construction (Fig. 5B, not shown), all four feeder lines are supported on a single dielectric layer and extend at right angles to the direction of the coupling unit.
Patent GB-1036253-A (GB)
Title: Electrical resistor
IPC: H01B1/00
Filed: 1964-03-12
Abstract: A resistor element consists preponderantly of molybdenum disilicide and a smaller quantity of boron,e.g. 80 to 98% molybdenum disilicide and 2 to 20% boron.  The element is produced by mixing and grinding granules of the two constituents and heating to 1100 DEG  to 1200 DEG C. the resultant being a dense metal-like material having a positive resistance temperature coefficient capable of sustained operation at high temperatures.  The element may be of rod form nickel plated at the ends for insertion in hollow copper terminals, the space between the rod and terminals being filled with silver solder.  The mass of the terminals may be sufficient to act as a heat dissipating source. Tin oxide may be incorporated in the resistor material to reduce the positive temperature coefficient. Further, the resistivity may be increased by the addition of nitrides, borides or carbides of Zr, Ti, V or Cr or by the addition of micronized aluminium oxide and the silicates and oxides of zirconium.
Patent GB-468655-A (GB)
Title: Improvements in or relating to the production of ionized gas such as air
IPC: H01T23/00
Filed: 1936-04-09
Abstract: 468,655. Electromedical appliances. STEVENS, A. H. (General Patents, Ltd.) April 9, 1936, No. 10556. [Class 81 (ii)] [Also in Group XL] In a process for charging a gas, such as air, with negative electricity for therapeutical &c. purpose, the gas is passed through an ioniser, such as an ozonizer, the positive charges are removed, and the gas mixed with the vapour of a liquid, which may be one re-active with ozone. The gas is then mixed with a second untreated stream and the mixture subjected to the action of a strong pulsating negative field. The apparatus comprises a fan 14, Fig. 3, which delivers air to two conduits 16, 16a. The conduit 16a communicates with an ozonizer O comprising coaxial metal cylinders 32, 37 with an intervening cylinder 34 of insulating material. The ozonized air passes to a reservoir V containing a liquid preferably re-active with ozone and provided with tortuous passages for the air so as to thoroughly vaporize the liquid and mix the air therewith. The reservoir is maintained at negative potential so as to remove the positive charges from the air. From the reservoir, the air passes by way of the pipe 50 to the interior of an insulated metal cylinder 20, Fig. 4, with a thin coaxial wire 24 on which a pulsating negative voltage is impressed. The ionized air is led into the cylinder by a conduit 51 which opens towards the wire 24. The air delivered from the fan by the conduit 16 is also passed into the cylinder 20 by way of the passage 17 and openings 17a. The air in the cylinder is negatively charged and passes out by way of a horn 22 which is adjustable to direct the stream where required. For therapeutic treatment the patient is connected to a source of positive potential. A rod 78 discharges the cylinder 20 to earth at intervals so as to keep it at a higher potential than the wire 24 and to impress on the field fiuctuations of higher frequency than the pulsations impressed on the wire. The circuit supplying energy to the wire 24 comprises a transformer the secondary of which is in series with one or more rectifying valves and a condenser 80. The wire is connected to the circuit between the plate of the rectifier and the condenser. The ozonizer is shunted across the transformer and functions as a spark gap to modify the form of the pulsations. The primary circuit of the transformer includes a mercury switch which is mounted on a pivoted and spring actuated lever. The lever is actuated by the closing of the lid to close the switch. Opening of the lid automatically opens the switch and through a link connection with the lever, earths the cylinder 20.
Patent GB-105619-A (GB)
IPC: B41F31/15
Abstract: 105,619. Whitehead, Morris, & Co., and Pugh, J. C. April 20, 1916. Inking - apparatus for letterpress printing machines, for printing in fluid ink such as ordinary writing ink as described for instance in Specification 1044/14, comprises an ink fountain with a roller dipping in the ink, a second roller engaging the fountain roller and constantly driven with it, and a vibrating or messenger roller covered with absorbent material for transferring the ink from the second roller direct to the ink table or bed. As shown, the roller c dips into the ink in the fountain or trough f and a second roller d engages with and is geared to the roller c which is driven by a band &c. The roller d may be adjusted by screws i to vary its pressure against the fountain roller c. A messenger roller k faced with absorbent material such as felt is moved by the arms l to transfer the ink from the roller d to the ink slab b. The slab b may be of glass or other material which will not act injuriously on the ink, and the trough f may be of porcelain or similar material.
Patent GB-101148-A (GB)
Title: Improvements in or relating to High Frequency Generators for Wireless Telegraphy and Telephony.
Inventor: BETHENOD JOSEPH
IPC: H02K19/24
Filed: 1916-07-26
Abstract: 101,148. Bethenod, J., and Girardeau, E. Aug. 10, 1915, [Convention date]. Inductor - alternators; conductors; cores and yokes; armatures and field magnets, cooling.-In order to produce a marked n<th> harmonic in a high-frequency inductor-alternator for wireless telegraphy and telephony, the ratio between the magnetic breadth d, Fig. 2, of the teeth of the inductor R or stator S to the pitch p of the teeth is made equal, or approximately so, to ¢n. Currents of the fundamental frequency as well as unused harmonics are eliminated from the external circuit by syntonized arrangements of capacity and inductance, for example as shown in dotted lines in Fig. 1. Alternatively, currents, the frequencies of which are not a multiple of n may be eliminated by con. necting in series n machines mechanically coupled so that they possess suitable phase-displacements; or n times as many teeth may be provided on the rotor as on the stator, p being then the pitch of the stator teeth only. To prevent alternating current from passing through the continuous-current exciting-source P, inductance B is placed in series with the source, the whole being shunted by a condenser C. Specification 103,657 is referred to. According to the Specification as open to inspection under Sect. 91 (3) (a), the rotor or inductor R comprises sheet-iron segments Y, Fig. 4 (Cancelled), separated from one another by joints J and held in place on the core or drum F by means of rounded projections H fitting into corresponding recesses in the core or drum. In a modification, Fig. 6 (Cancelled), rotor teeth, of sheet metal, are supported individually. The stator conductors z may be supported in the slots by means of insulating-wedges resting on shoulders or projections 1 formed on the teeth when stamping them; or sheets 2, Fig. 5, (Can celled) of non-magnetic material with incomplete circular openings 3 may be inserted at intervals in the bundle of core plates. For cooling purposes water or other liquid is led by an inlet 0 into circular grooves G, Fig. 7 (Cancelled), or into longitudinal passages Q, Fig. 8 (Cancelled), formed in the rotor, and, after traversing the grooves, the medium leaves at the exit O<1>. The outer part F, Fig. 7 (Cancelled), may be in the form of a hollow cylinder; the parts F<1>, F<11>, Fig. 8 (Cancelled), may be used as closing rings after the machining of the circulating passages. This subject-matter does not appear in the Specification as accepted.
Patent GB-105788-A (GB)
IPC: C10J3/00
Abstract: 105,788. Tinsley, W. P., and Nash, J. G. April 25, 1916. Generating - chambers, construction of; distributing liquid to mass of solid.--The base and wall which are integrally formed. and the cap of a gas-generator tank are composed of reinforced concrete; an eduction pipe leads from the centre of the base through a duct formed therein, and means are provided for feeding oils and acids to gas-making materials in the tank. Waterproofing- compounds are mixed with the concrete to make the wall and base liquid- and acid-proof. The base 1 is reinforced by crossed rods 22, which may be interwoven, and is tied to the wall 2 by U-shaped rods 5, preferably square and twisted, a groove 15 being formed at the bottom of the wall to receive seal. ing material. The removable cap is reinforced by a dished shell 3 provided with semicircular steel pieces 4 for holding the concrete lining. The filling-material may be granite, hard stone, washed iron ore, or scrap iron, preferably horse-shoes provided with tufts or waste cotton, and is arranged to form a cavity 25 over the outlet 18. The cavity 25 may be formed by a perforated cap. The pipe 20 is inclined, as shown, to prevent liquids from passing to the outlet 21, and is provided with a drain 23. A hand-hole 10 closed by a removable cap 6 allows access to the liquiddistributing apparatus which comprises a rotating pipe 3<1> provided with perforated arms 23<1> furnished with wings 36 and rings 24<1> which prevent the liquids from flowing along the arms. Air is supplied also to the tank
Patent GB-342952-A (GB)
Title: Improvements relating to musical instruments
IPC: G10H5/02
Filed: 1930-04-03
Abstract: 342,952. Transformers ; inductoralternators. COUPLEUX, E. E., 93, Rue Nationale, Tourcoing, Nord, and GIVELET, J. A., 24, Rue Bois-le-Vent, Paris, both in France. April 3, 1930, No. 10603. Convention date, May 1, 1929. [Classes 35 and 38 (ii).] In an automatic electric musical instrument a coupling transformer acting as an inductor alternator is used consisting of an iron core 21 carrying primary and secondary windings 22, 23, with an iron armature 24 rotating in a gap in the core to superimpose a periodic variation on the current taken from the secondary. The armature may be encased in a copper tube or provided with windings connected to a variable resistance. The transformer for a number of musical instruments consists of a core bearing a primary for each musical instrument and one secondary moved over the core by a pneumatic bellows.