baber/WOPTO huggingface dataset:
Patent GB-782326-A (GB)
Title: A sintering apparatus
IPC: F27B21/06
Filed: 1955-10-05
Abstract: 782,326. Draught sintering apparatus. ROLFSEN, O., and ROLFSEN, P. Oct. 5, 1955 [Oct. 13, 1954], No. 28338/55. Class 82(1) A draught sintering apparatus has a conical grate  which rotates about an axis 1; the grate bars 26, 27 are water cooled, their , ends being connected to annular water chambers 38, 39 which rotate with the grate and which may be mounted with clearances to allow for dilatation. The grate surface with the water chambers is divided into sectors, each separately removable. The segments of the chambers may have outlets at both ends and these, together with the pipes connecting them to a ring conduit 54 concentric with the axis, are arranged so the water flow has no downward portion thus precluding the formation of steam pockets, the outlet being from the uppermost point of the ring conduit. The water is supplied and discharged through pipes 42, 43. The connecting conduits may be disconnectable to permit dismantling of the grate sections independently of the ring conduit which may be polygonous, with the connecting conduits 55 extending from the corners. A valve device (Fig. 3) with a stationary housing 40 divided by wall 41 to portions connected to pipes 42, 43, with an annular row of chambers each connected to a pipe 55 in valve housing 56 which forms a sliding seal with housing 40 may be used to ensure the required circulation of water which may be in a closed circuit. The rotating truss structure of the grate may carry exchangeable suction boxes 60 which may be connected to a stationary suction duct 23 by ducts 66 opening into duct 23 at an abtuse angle. Each suction chamber may have a grate 70 located so that ashes collected in the chamber during revolutions will collect upon it and which is opened once per revolution for ash discharge. Specifications 537,324 and 611,955 are referred to.
Patent GB-1126499-A (GB)
Title: Door handle connection
IPC: E05D3/04
Filed: 1967-06-20
Abstract: 1,126,499. Securing handles on shafts. OTTO GROSSSTEINBECK G.m.b.H. 20 June, 1967 [23 June, 1966], No. 28340/67. Heading F2U. A door handle 3 is axially positioned on a square spindle 1, having ratchet teeth 2, by a locking leaf spring 4 having a wide central part located in an undercut groove (14) in the handle (Fig. 3, not shown) and narrower ends (13, 12), (Fig. 2, not shown) the former of which engages the ratchet teeth 2 whilst the latter bears against the spindle 1, the spring 4 being formed integrally with a square ring 10 which engages over the spindle 1 and retains the spring 4 to prevent loss thereof on removal of the handle 3 from the spindle 1, the spring ring 10 being slightly distorted so that it cannot be easily displaced on the spindle 1. A grub screw 7 in the handle passes through the spring 4, presses the spring against the upper walls of the undercut, axially positions the spring and provides means for releasing the handle.
Patent GB-228642-A (GB)
Title: A container for talking machine needles
IPC: G11B3/54
Filed: 1923-11-10
Abstract: 228,642. Gramophone Co., Ltd., and Buckle, H. L. T. Nov. 10, 1923. Partitioned boxes; contents, delivering.-A circular box for containing talking-machine needles is divided into four segmental compartments, three for holding different classes of unused needles and the fourth to receive used needles. The box has a rotary cover 4 provided with a large, opening 21 to give access to any one of the three compartments 9 holding unused needles, and, when the cover is so placed, one of three smaller holes 22 registers with a hole 11 to allow used needles to be dropped into the fourth compartment, which extends into the middle of the box. In the position shown the opening 21 registers with an opening 10 to allow the used needles to be shaken out. An indentation 20 on the cover engages holes 19 in the top of the box to hold the cover in its four positions.
Patent GB-938825-A (GB)
Title: Improvements relating to high voltage electric power cables
IPC: H01B3/30
Filed: 1961-08-04
Abstract: A high voltage, above 600 volts, electric power cable has the metallic conductor insulated with a plasticized polyvinyl chloride composition having a specific inductive capacitance of 5 or less at 1,000 cycles.  The plasticized polyvinyl chloride resin comprises polyvinyl chloride plasticized with from 2,5 to 125% by weight (based on the weight of polyvinyl chloride resin) of chlorinated polyethylene.  Suitable polyvinyl chloride resins include homopolymers of vinyl chloride and copolymers thereof with vinyl acetate, and compounds made from such homo- and copolymers. The chlorine content of the chlorinated polyethylene may vary from 10 to 60% by weight.  In the examples dibasic lead phosphate and dibasic lead stearate are also present in the compositions.
Patent GB-899096-A (GB)
Title: Improvements in power conserving mixer and oscillator
IPC: H03D7/12
Filed: 1959-08-20
Abstract: 899,096. Transistor oscillator mixer circuits. GENERAL ELECTRIC CO. Aug. 20, 1959 [Aug. 21, 1958], No. 28503/59. Class 40(6). An oscillator-mixer circuit comprises a mixer transistor connected in series with an oscillator transistor across a D.C. supply with the common point of the transistors connected through a circuit having a low impedance at signal frequencies to one terminal of the supply the input signal and the output terminal of the oscillator being connected to an input terminal of the mixer. In the Figure a crystal oscillator transistor circuit 24 is connected in series with a transistor mixer 20 and an IF  tuned circuit 18 feeding the IF amplifier 17, the common point 34 being earthed through a capacitor 32. A sgnal from the input and RF stages 12 of a radio receiver is applied through a capacitor to the base of the mixer transistor 20 together with a local oscillation derived through a capacitor 38 from the emitter of the oscillator transistor.
Patent GB-265693-A (GB)
Title: An improved amplifier for four-wire connection with heavily loaded lines
IPC: H04B3/14
Filed: 1925-11-13
Abstract: 265,693. Kirkland, J. W., (Allgemeine Elektricitats Ges.). Nov. 13, 1925. Two-way repeating systems. - In a four wire system the distortion due to loading &c. is compensated by means of selective devices S associated with the intervalve transformers. To avoid retro-action the three transformers are arranged with their axes at right angles. To avoid interference between the E-W, W-E channels the respective amplifiers are mounted on more or less widely separated panels. Reference has been directed by the Comptroller to Specifications 151,140 and 154,925.
Patent GB-280886-A (GB)
Title: Improvements in the manufacture and production of vat dyestuffs
IPC: C09B5/40
Filed: 1927-10-28
Abstract: 280,886. I. G. Farbenindustrie Akt.- Ges. Nov. 18, 1926, [Convention date]. Samples furnished. Benzanthrone dyes. - Vat dyestuffs are produced by treating with alkaline agents Bz1- benzanthronyl-1- animoanthraquinones alkylated at the nitrogen atom. The reaction proceeds more readily and the products are generally purer than when the non-alkylated benzanthronyl.1- aminoanthraquinones are employed as described in Specification 24604/08. According to an example a product dyeing cotton in blue-green shades from the vat is obtained from N-methyl- Bz1-benzanthronyl 1 - aminoanthraquinone and alcoholic caustic potash at 98‹ C. N-Methyl-Bz1-benzanthronyl- 1 - aminoanthraquinones are obtainable by alkylating Bz1-benzanthronyl-1-aminoanthraquinones or by condensing Bz1-halogen benzanthrones with 1-alkylaminoanthraquinones. The N - methyl - Bz1 - benzanthranthronyl-2-aminoanthraquinone is mentioned.
Patent GB-1462866-A (GB)
Title: Vibratory sieving apparatus
IPC: B07B1/50
Filed: 1973-06-18
Abstract: 1462866 Vibrating RUSSELL FINEX Ltd 29 May 1974 [18 June 1973] 28774/73 Heading F2X [Also in Divisions B1-B2] A vibratory sieving apparatus comprises a base 10, a frame 12 mounted on the base means 17 for oscillating the frame relative to the base, a grating 28 attached to the frame, a member 36 connected to the grating and ultrasonic means operable independently of the oscillating means and operating on the member to effect ultrasonic vibrations of the grating relative to the frame. The frame is supported on the base by means of mounting assemblies each of which comprises a rod 14 secured in resilient bushes 15, 16 fixed to brackets on the frame and base respectively. The frame is oscillated at not more than 10,000 vibrations per minute with an amplitude of 1/8 to 1 inch by an out-of-balance vibrator assembly 17. The grating is vibrated at 13,000 to 40,000 vibrations per second with an amplitude of 0À0005 to 0À001 inch by an ultrasonic transducer assembly 35 comprising a probe 36 attached to an electromechanical transducer and connected to the grating. The transducer assembly is mounted in a casing 37 through which cooling air is blown by a fan 42 via ducting 43 and a control box and generator unit 44 to which the transducer is connected by a lead 45. The combination of the low and high frequency vibrations caused respectively by the out-of-balance weight assembly and the ultrasonic probe creates bulk turbulence in the material being sieved and also prevents blocking of the grating.
Patent GB-190701-A (GB)
Title: Improvements in and relating to carburettors for internal combustion engines
IPC: F02M19/035
Filed: 1922-10-23
Abstract: 190,701. Cozette, R. Dec. 21, 1921, [Convention date]. Spray carburettors.-Fuel is delivered to a nozzle 6 in a Venturi air-tube 5 from a concentric float-chamber 2 through two annular fuelwells 19, 20, the orifices of the nozzle 6 being slightly above the fuel level. The well 19 is in communication with the atmosphere through an adjustable valve. 25 and with the float chamber bv an orifice 22. Communication between the wells 19, 20 is either by an orifice 21 or by a series of orifices 27. The Venturi tube 5 is fixed at right angles to the main air inlet tube 1 and may be extended into' this tube on the side of the incoming air or the tube 1 may have a diffuser 3 as shown. The Specification as open to inspection under Sect. 91 (3) (a) describes the orifices 27 as being graduated and arranged in staggered vertical order. This subject-matter does not appear in the Specification as accepted.
Patent GB-470890-A (GB)
Title: Improvements in or relating to silicate cements
IPC: C04B28/26
Filed: 1936-10-23
Abstract: A silicate cement consists of a solution of an alkali silicate in which the Na2O : SiO2 ratio is between 1 : 2 and 1 : 3,25, and an inert aggregate together with a setting-agent consisting of an alkali silico fluoride mixed or not with an acid fluoride, in amount more than sufficient to neutralize the alkali in the silicate.  British Specifications 267,396, [Class 70], 386,045, and 401,522, and U.S.A. Specifications 1,837,614 and 1,867,444 are referred to.
Patent GB-680747-A (GB)
Title: Improvements in or relating to silica-alumina gel catalysts and method of producing same
IPC: B01J21/00
Filed: 1950-11-27
Abstract: A silica-alumina gel catalyst (containing for example 10-30 per cent alumina) of improved stability, increased porosity, and low fixed sulphate content, is produced by preparing an aqueous suspension of gelatinous hydrated silica, mixing a water solution of aluminum sulphate therewith, adding ammonium hydroxide to precipitate a hydrated aluminium oxide, washing the gel with an acidic solution to remove water-soluble salts, leaching with ammonia at a pH of 6.0-7.0 to remove basic aluminium sulphate, and then washing and drying the gel by contact with a stream of hot gases.  Precipitation, ageing, washing, and drying of the gel may be performed as described in Specification 626,455.  Leaching is preferably carried out at a pH of 6.1-6.6 for 15-90 minutes; the gel cake, after washing with acidified water on a filter, is repulped with water to give a slurry containing 4-8 per cent solids, and ammonia is added to the required pH.  After passing through one or more leaching tanks, the slurry is filtered and washed with water at pH 3.8. Tests are described which show that the catalyst has a reduced bulk density, an improved steam and thermal stability, and an increased initial activity in the cracking of petroleum hydrocarbons, as compared with catalyst prepared without the leaching step.
Patent GB-997149-A (GB)
Title: Improvements relating to cigarette filters
Inventor: HUGHES IVOR WALLACE
IPC: A24D3/16
Filed: 1963-07-22
Abstract: A tobacco smoke filter comprises filamentary or sheet tobacco smoke filter material treated with an alkaline sodium salt of ortho-phosphoric acid.  The amount of the salt added is from 10%-20% by weight of the filter material and it may be applied by dusting or in the form of a solution by spraying or coating. Quantative examples are given.
Patent GB-699219-A (GB)
Title: Improvements in or relating to electromagnetic relays
IPC: H01H71/24
Filed: 1951-12-11
Abstract: 699,219. Electromagnetic relays. FLIGUE, W DE, and LAVALLEE, P. Dec. 11, 1951., No 29037/51. Class 38 (v). The magnetic circuit of a relay has a hysterisis curve with a straight portion leading to the saturation knee and the number of ampere turns of the coil and the restoring force on the armature are selected so that the relay is actuated by a magnetising force corresponding to the straight portion, and so that actuation of the relay brings about saturation. On deenergization the amount of remanent magnetism will then always be the same and the relay will respond always to the same current. The restoring force is preferably a permanent magnet 10, the attractive force of which for the armature 9 falls off rapidly when the armature moves into its dotted position and so causes quicker movement. Adjustment of the stop 22 may be such that the armature 'restores' when the winding 7 is de-energized or such that it remains held by remanent magnetism in which case the relay must be reset by mechanical or electromagnetic force applied at J. In a modification Fig. 4 (not shown) the armature has two positions of stable equilibrium determined by two permanent magnets and is reset mechanically or by an electromagnet. The latter may also take the place of a permanent magnet, being energized by a small current normally and by a larger current for resetting. In a further modification, Fig. 5 (not shown) the armature instead of carrying a contact operates a contact lever. The biasing magnet 10 may have a shunt separated from it by an air gap, Figs, 6, 7 (not shown). This causes a still quicker release of the armature.
Patent GB-1477323-A (GB)
Title: Heat exchangers and a method for manufacturing heat ex changers
IPC: F28F9/16
Filed: 1974-07-01
Abstract: 1477323 Tubular heat exchangers SOC ANON DES USINES CHAUSSON 1 July 1974 [25 July 1973] 29056/74 Heading F4S [Also in Division F2] A joint between a tube 1 and an end plate 3 in a tubular-core heat exchanger comprises a ring-like flange 7 of curved section surrounding an aperture in the end plate 3 into which the tube 1 is inserted and then expanded in the region of the flange, causing permanent deformation of the tube 1 and resilient deformation of the flange 7. To protect the joint against corrosion the tube plate 3 may be made of stainless steel or alternatively may be coated with a resin, e.g. on both sides after formation of the flanges but before insertion of the tubes. In a third embodiment the tube plate may comprise an upper plate of stainless steel and a lower plate of mild steel joined together, each plate having its own flange 7 facing in opposite directions, and in a further embodiment the tube may be beaded at a position between the two flanges around the circumference of the tube. The tubular-core heat exchanger comprises rows of tubes 1 and fins 2 slipped on said tubes and applied to the outer wall of said tubes by flanges 2a. The ends of the tubes 1 are engaged into tube plates 3, 3a, as described above, on which are placed header boxes 4, 4a made of a moulded material such as a synthetic resin, the end plates being connected by their lateral sides by means of flanges 5, 5a.
Patent GB-1446731-A (GB)
Title: Soil-cultivating implements soil-cultivating implements
IPC: A01B27/00
Filed: 1973-06-19
Abstract: 1446731 Soil-cultivating implements C VAN DER LELY NV 19 June 1973 [23 June 1972] 29133/73 Heading A1B A small rotary harrow has a frame 1 carrying an engine (not shown) which drives a plurality of soil-working members 3 and also, through bevel gears 15, 16 (Fig. 2) and chain 29, a cage-type roller 26A. A steering member 45 is attached in alternative positions to the frame 1. In Fig. 3 the roller 26A and a leading wheel 35 are carried on arms pivoted about axis a of shafts 17, 23. These arms are adjusted simultaneously by operation of the cranked screw-threaded spindle 40A to vary the height of the soil-working members. In an alternative embodiment (Fig. 6) the height is adjusted solely by movement of the front, wheel 35, arm 50 pivoting about axis 53. The members 3 work overlapping strips of soil and the tines 6 are of circular cross-section spring steel or other resilient material. In Fig. 6 one tine of each pair has an additional loop 58 to increase resilience.
Patent GB-209860-A (GB)
Title: Improvements in closures for milk churns and other vessels
IPC: B65D53/02
Filed: 1922-10-26
Abstract: 209,860. Stanley, E. Oct. 26, 1922. Lids, bayonet-joint; lids, packing-rings for.- In a milk or butter churn or other vessel having a lid b, Fig. 3, provided with eccentric projections, b', b<2> which engage eccentric surfaces c', c<2>, Fig. 4, on a packing ring c to make a tight joint, the packing ring c of rubber &c. is vulcanized or otherwise permanently secured to thevessel and the eccentric surfaces. &c. are free from recesses which cannot readily be cleansed. The lid is secured in place, by a bayonet joint fastening comprising projections a<1> on the neck and recesses b<3> in the lid. The ring c has an inwardly projecting lip c<4> which prevents metalliccontact between the lid and the ledge a<3> in theneck of the vessel. As shown, the packing ring and the lid are positioned inside the neck of the vessel, but the ring may be arranged outside the neck to engage with eccentric surfaces formed on a depending rim on the lid. In another construction, the packing ring is vulcanized in a ring of angular or other cross-section provided' with lugs for securing it to a butter churn &c.
Patent GB-746517-A (GB)
Title: Inflatable mattress
Inventor: JENVEY WILLIAM CHARLES
IPC: A47C27/08
Filed: 1953-10-22
Abstract: 746,517. Inflatable mattresses ; ground seats. COW & CO., Ltd., P. B. Oct. 14, 1954 [Oct. 22, 1953], No. 29240/53. Classes 52(2) and 52(4). A mattress convertible into a ground seat comprises an inflatable body part 6, 7 hingeable about its middle and restrained in inverted-V formation by detachable connections 13 and a separately-inflatable pillow part 4 permanently fixed to the body part.
Patent GB-1401843-A (GB)
Title: Catalytic processes in chemical synthesis
IPC: B01J31/06
Filed: 1972-06-22
Abstract: 1401843 Sulphonated graft polymers UNISEARCH Ltd 22 June 1972 [1 July 1971] 29344/72 Heading C3P [Also in Division C2] A sulphonated graft polymer used as a catalyst is produced by immersing particles of polytrifluorochloroethylene powder grafted with styrene in chlorosulphonic acid, followed by treatment in sulphuric acid.
Patent GB-219563-A (GB)
Title: A containing and ejecting device for sealing wax
IPC: B43M1/02
Filed: 1923-11-21
Abstract: 219,563. Meynell, H., and Spyvee, N. E. Nov. 21, 1923. Sealing. - In a sealing-wax heating-appliance of the kind in which molten wax is ejected through one or more nozzles from an externally heated container, the wax is ejected by a looselyfitting, internal, heavy plunger d, Fig. 2, which presses upon the wax when the container a is inclined, and may be assisted by a helical spring e. The nozzle c and handle b at opposite ends of the container may be detachable by pulling out or unscrewing, the container being refilled with wax h in lump or stick form by removing either the nozzle c or the handle b, spring e, and plunger d. The nozzle may have more than one opening to give more than one wax stream, may be curved to form an inclined delivery opening, or may be shaped as shown in Fig. 6. The casing a may be heated by a spirit lamp k, Fig. 7, on a stand l carrying supports m for the casing.
Patent GB-483830-A (GB)
Title: Improvements in or relating to apparatus for extruding metal
IPC: B21C29/00
Filed: 1936-10-29
Abstract: 483,830. Squirting. PIRELLI-GENERAL CABLE WORKS, Ltd., and MARTINEZ, G. Oct. 29, 1936, Nos. 29418 and 35711. [Class 83 (iv)] [Also in Group XIII] In extrusion apparatus of the helical screwthreaded impeller type, a series of longitudinally extending bores for the circulation of cooling fluid is provided in the material of the walls of the working chamber or die chamber or secured integrally thereto as by welding. The invention is applicable to the presses described in Specifications 429,918 and 430,006. Bores 1 are drilled longitudinally in the outer wall of the press chamber, their outer ends being closed by screwed plugs 2, and communicate with annular inlet and outlet manifolds 8, 9. Similar manifolds 27, 28 communicate with tubes 25 leading to bores 24 in the central stationary member 22, the bores 24 communicating in pairs with arcuate ports 35 in a ring 34 for delivery and return of the coolant. A similar series of bores is provided for cooling the die chamber 41. Cooling fluid passes from a tank 12 having baffles 13 through a pipe 14 leading to a pump 15 from which it passes through cooling tubes 16, 31 to the inlet manifolds. Valves 33, 20 control the quantity of fluid. The supply to individual bores may be controlled by valves to vary the cooling effect around the periphery in order to keep the thickness of a tube or cable sheath constant. At the beginning of the operation, steam is supplied from pipes 37, 39 through valves 38, 40. Heating means such as described in Specification 483,829, [Group XI], may be associated with the press. Specification 464,761 also is referred to.
Patent GB-806504-A (GB)
Title: Improvements in or relating to electrical impedance matching transformers
Inventor: CHARMAN FREDERICK JOHN HENRY
IPC: H03H7/38
Filed: 1954-10-13
Abstract: 806,504. Transforming impedances. ELECTRIC & MUSICAL INDUSTRIES Ltd. Oct. 13, 1955 [Oct. 13, 1954], No. 29447/54. Class 40 (8). [Also in Group XL (c)] An impedance matching transformer for matching the impedance of a radio aerial to its feeder comprises a transmission line having an inner conductor 2 and an outer conductor 4. The inner conductor is wound helically along a core 1 of insulating material with the pitch of helix varying continuously from a small pitch at one end to a larger pitch at the other. Insulation 3 is provided between the inner and outer conductors. As shown, the transmission line is connected at its lower end to a coaxial feeder 5, 6, and the smaller pitch of the helix is at the upper end so that the transformer is arranged to match an aerial of higher impedance to the feeder 5, 6. In another embodiment (Fig. 2, not shown), the insulating core 1 is conical in shape and the inner conductor is wound along it in a helix of constant pitch to produce the same effect. The pitch of the helix winding, the winding diameter, and the nature of the dielectric core may be varied either singly or in combination along the transmission line to produce the required matching. Preferably the variation is continuous but may be by steps.