baber/WOPTO huggingface dataset:
Patent GB-899132-A (GB)
Title: Improvements in or relating to radio apparatus for the avoidance of collisions by aircraft
Inventor: WIERSMA RUDOLF ARNOLD
IPC: G01S1/02
Filed: 1958-09-02
Abstract: 899,132. Radio signalling; radio navigation. AVEL CORPORATION GENEVA. Aug. 20, 1959 [Sept. 2, 1958], No. 28223/58. Classes 40(5) and 40(7). In an apparatus giving warning of the proximity of fixed obstacles to aircraft, a radio beacon at the obstacle comprises a pressure capsule 1 which is adjusted to produce a deflection corresponding to the safe flying height above the obstacle and controls the frequency of a variable oscillator 2 generating an audio frequency of f + b where f corresponds to sea level and b corresponds to the safe flying height. The output of the oscillator 2 amplitude modulates a radio transmitter 3 operating on a standard frequency. In this embodiment the modulating frequencies may vary between f c/s. at sea level and 2f at 30,000 feet. In the aircraft the received signals are demodulated at 6 and the frequency f + b supplied to a mixer 7. A pressure capsule 8 through a variable oscillator 9 produces a frequency f + a representing the height of the aircraft and this frequency is mixed at 10 with a frequency 6f supplied by a fixed oscillator 11. A filter 12 rejects all frequencies below 7f and the frequency 7f + a is passed to the mixer 7. The output of the mixer 7 is passed to a band pass filter 13 which passes only frequencies between 5f and 6f and thus, if b is greater than a the frequency 6f + a - b will be passed to show on an indicator 14 that the aircraft is below the safe height. The frequency difference may be measured to indicate the amount of climb necessary. The receiver 6 is provided with A.G.C. so that when a near beacon is received other more distant beacons will not be received, and may be a standard radio compass receiver whereby the bearing of the beacon also may be indicated at the same time. In order to avoid interference by beat frequencies from other beacons an additional filter passing only frequencies between f and 2f may be included between the receiver 6 and mixer 7. The radio beacon may be pulse modulated to provide identification, and the signal strength may be used as an approximate indication of range. Other arrangements are described using different audio frequency combinations. Specification 874,261 is referred to.
Patent GB-413907-A (GB)
Title: Improvements in or relating to the treatment of seeds
Filed: 1933-10-12
Abstract: Seeds for sowing are treated with solutions of hydrogen peroxide, per salts or true peroxides of strength corresponding to a hydrogen peroxide solution of more than 3 per cent and preferably of 10 to 40 per cent or more under conditions limiting the action of the solutions to the exterior of the seeds.  In specific examples a limited quantity of the liquid is sprayed or otherwise applied to the material and distributed by shaking, shovelling or mechanical mixing. Iron and copper salts may be added to act as catalysts and the action may be accelerated or retarded by the use of hydrogen peroxide in alkaline or acid solutions respectively; the material may also be previously treated with alkaline or acid solutions.  In the use of percompounds the liquid used may be evaporated by the heat generated so that the seeds may be stored immediately after treatment.  As examples of per salts, percarbonates, persulphates, perphosphates and perarseniates are mentioned and the peroxides of calcium, magnesium and barium may be used; organic percompounds such as percarbamide or compounds of the systems hexamethylenetetramine-H2O2 may be employed. Pickling agents such as mercury salts or organic mercury compounds and/or fertilizing agents may also be added.  Specification 393,808 is referred to.ALSO:Seeds for sowing are treated with solutions of hydrogen peroxide, per salts or true peroxides of strength corresponding to a hydrogen peroxide solution of more than 3 per cent. and preferably of 10 to 40 per cent. or more under conditions limiting the action of the solutions to the exterior of the seeds. In specific examples a limited quantity of the liquid is sprayed or otherwise applied to the material and distributed by shaking, shovelling or mechanical mixing.  Iron and copper salts may be added to act as catalysts and the action may be accelerated or retarded by the use of hydrogen peroxide in alkaline or acid solutions respectively: the material may also be previously treated with alkaline or acid solutions.  In the use of percompounds the liquid used may be evaporated by the heat generated so that the seeds may be stored immediately after treatment.  As examples of per salts, percarbonates, persulphates, per-phosphates and per-arseniates are mentioned and the peroxides of calcium, magnesium and barium may be used: organic per compounds such as percarbamide or compounds of the system hexamethylenetetramine-H2O2 may be employed. Pickling agents such as mercury salts or organic mercury compounds and/or fertilizing agents may also be added.  Specification 393,808 is referred to.
Patent GB-1277093-A (GB)
Title: Improvements in or relating to gas turbine engines
Inventor: PARR NORMAN LAWRENCE
IPC: F01D25/16
Filed: 1969-06-04
Abstract: 1277093 Gas turbine plant NATIONAL RESEARCH DEVELOPMENT CORP 3 Sept 1970 [4 June 1969] 28268/68 Headings F1G F1L and F1T A gas turbine engine has a ceramic heat shield disposed around the shaft of the turbine so that it constitutes a rotating wall of an annular combustion chamber. The engine shown comprises a centrifugal compressor impeller 17 and a turbine rotor comprising discs 2 and blades 3 mounted on a shaft 6, air from the compressor being preheated in a rotary heat exchanger 16 before passing to the annular combustion chamber 9. The gases discharge from the turbine and pass through the air pre-heater matrix. The inlet guide vanes 12 are mounted for angular adjustment. A heat shield 1 is disposed around the shaft 6 and forms the inner boundary of the annular combustion chamber; a perforated wall 8 is spaced from the inner boundary to define the main combustion chamber and outer chamber 7. Fuel is injected into the inner and outer chambers, that injected into the main chamber impinging on turbulence raisers 5 formed on the inner wall. The heat shield is formed of ceramic material such as silicon nitride. The shaft is supported in fluid bearings 18. The parts mounted on the shaft are secured by a strain device 4.
Patent GB-145342-A (GB)
Title: Improvements in and connected with dampers for furnaces, flues and the like
IPC: F23L13/00
Filed: 1919-11-15
Abstract: 145,342. Hamer, W. Nov. 15, 1919. Dampers.-In dampers of the kind in which packing rollers e make contact with the sliding damper plate d and with a casing surrounding it to prevent leakage, the rollers are held in position by springs. In the form shown, the spindles f of the rollers are supported at each end in blocks g sliding in guideways h. Springs j bear on the blocks g and force the rollers into contact. The rollers mav be formed of asbestos rope or other material wound on the spindles and may have flanges e<1> at their ends. In a modification, the ends of the spindles f are connected by springs and the spindles of the rollers may be mounted in pivoted arms. Only one roller may be provided with springs.
Patent GB-1517481-A (GB)
Title: Follow-up control apparatus for controlling the movement of a welding weaving device
IPC: B23K9/127
Filed: 1976-07-09
Abstract: 1517481 Automatic position control MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 9 July 1976 [14 July 1975 4 Dec 1975 11 Dec 1975 20 Feb 1976] 28551/76 Heading G3R [Also in Division B3] The movement of an arc welding torch along a line about which it executes a weaving motion is controlled in accordance with measurements of the welding current made at the ends of the weaving path. As shown in Fig. 6, a welding torch is oscillated between positions 6, 7 while being moved along the junction line between two bevel-edged steel plates 2, 3, so as to form a weld 19. The welding current flowing through a consumable wire 8, 9 is sensed by a detector 23 which may include a field effect transistor, and supplies a signal to a low-pass filter circuit 24, Fig. 7 (not shown), which blocks current variations due to non-uniformity in the wire feed and short-circuiting of the wire. Switches 25, 26 which may be transistors, are closed at times corresponding to the welding torch being at opposite extreme transverse positions, so that values of left and right end currents are stored in memory circuits 27, 28. An amplifier 29 compares the values stored in the memory circuits which may be integrated over a number of cycles, and the difference is compared with a reference level. If this level is exceeded, a unit 32 issues a command to a motor 33 which shifts the torch weaving mechanism in an appropriate direction such that the current variations tend towards symmetry about the welding joint line. In another embodiment, Fig. 9 (not shown), by-pass switches are connected in parallel with the memory circuits 27, 28 while one of the circuits may be omitted, Fig. 10 (not shown). Circuit details are given with reference to Figs. 11 and 12 (not shown). A biasing voltage may be introduced into one  channel if an asymmetric weld is to be formed, e.g. between a bevelled edge and a flat plate, Fig. 13 (not shown). The method may also be adapted for tube and fillet welding.
Patent GB-1012290-A (GB)
Title: Apparatus for smoothing and removing dust from sheets fed around a cylinder
IPC: B41F21/00
Filed: 1964-07-14
Abstract: 1,012,290. Printing machines; feeding sheets. MASCHINENFABRIK JOHANNISBERG G.m.b.H. July 14, 1964 [July 15, 1963], No. 28928/64. Headings B6B and B6C. Apparatus for smoothing and removing dust from sheets, particularly prior to printing, comprises a suction box 1 pivoted at 6 so as to lie adjacent to the impression cylinder 2 in advance of the printing position, the box carrying brushes 9, 12 along its upper and lower edges for smoothing the sheets and assisting in the dust removal, and being oscillated about the pivot 6 so that it is moved away from the cylinder after the tail end of one sheet has passed the bottom brush 12 and moved towards the cylinder when the leading edge of the next sheet has passed the brush 12. Suction is applied through one of the pivots 6 to the box 1 which has apertures 11 distributed so that suction is applied uniformly to the sheets, and also carries small brushes 24 which prevent the sheet being sucked into contact with the box 1. The box 1 can be lifted out of its pivot bearings by handles 8 and is supported at its lower end by rollers 21 carried by a linkage 14 operated from a cam 13 on the cylinder shaft so as to oscillate the box 1 as required. A dust box 22 is provided beneath the brush 12.
Patent GB-1094918-A (GB)
Title: Process for producing of phosphorus pentoxide from a phosphatic ore
Inventor: MASDIN EDWARD GUY
IPC: C01B25/20
Filed: 1966-06-28
Abstract: Phosphorous pentoxide is produced from a phosphatic ore by preheating the ore with silica to a temperature such that reaction does not occur, mixing the preheated material with a solid carbonaceous reductant and heating to form a molten bath, heat being supplied by the combustion of elemental phosphorus and carbon monoxide issuing from the bath with a supplied oxidant. The carbonaceous reductant is used in sufficient excess over that required to effect complete reduction of the phosphorus pentoxide and of impurities in the phosphate rock to provide a protective layer of reducing gases on the surface of the molten bath.  The oxidant used to oxidize the phosphorus and carbon monoxide gases is oxygen or air enriched with oxygen.
Patent GB-189325-A (GB)
Title: Improvements in hair cutting devices
IPC: B26B21/12
Filed: 1921-11-02
Abstract: 189,325. Price, F. J., and Gallaway, M. W. Nov. 2, 1921, Hair-cutting appliances of safety-razor type.- A blade holder for a hair-cutting device, comprises a single piece of sheet metal folded centrally upon itself, and slotted along the line of fold a, a, so as to form teeth 14. The margins 18 of the sheet are bent over to form channels into which the blades 17 are slid. A handle is provided by the extensions 12, 13, which are folded over and then brought together. Fcr withdrawing a blade from the holder, a finger-piece, which is bent back upon itself, is provided at the rear edge of one end of the blade.
Patent GB-1036928-A (GB)
Title: Gas water heater for central heating systems with a circulating pump
IPC: F23N5/04
Filed: 1963-07-23
Abstract: 1,036,928. Valves. H. VAILLANT, [trading as JOH. VAILLANT KOMM. GES.]. July 23, 1963 [July 28, 1962; Aug. 20, 1962], No. 29163/63. Heading F2V. [Also in Divisions F4 and G3] A gas water heater, for a central heating system provided with a water circulation pump 17, comprises a gas valve which is opened by the pressure difference across a restrictor 19 when the water is circulated. Opposite sides of the restrictor are connected by pipes 18, 20 to chambers 3, 4 on opposite sides of a diaphragm 2 and the pressure difference causes opening of a valve 6 to allow flow of gas from an inlet 10 to burners 11. The pipe 20 is provided with a valve 21 which retards the movement of the diaphragm in a valve opening direction to provide a slow ignition device.
Patent GB-991000-A (GB)
Title: High speed rotor systems
Inventor: LINNING DAVID LEES
IPC: F16C3/02
Filed: 1960-08-29
Abstract: 991,000. Balancing shafts; vibration dampers. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. Nov. 23, 1961 [Aug. 29, 1960], No. 29783/60. Headings F2S and F2U. An elongate high-speed rotor system comprises two concentric tubular rotors of differing whirl critcal speeds which are connected for rotation at the same speed and the annular clearance between which is such that at their critical speeds the rotors engage. The engagement between the rotors causes the whirl set up in the rotor which is at critical speed to collapse before the amplitude of its deflection exceeds an acceptable value. The whirl critical speed is proportional to where R is radius of rotor, 1 is length of rotor between supports, E is Youngs modulus for the rotor material and P is the density of the material. In Fig. 1 the two tubular rotors 11, 12 are of substantially different radii, the rotors being connected at their ends by rings 13 and supported by resiliently mounted gas bearings 15. Rings 14 arranged on the rotor 11 at antinodal positions engage the rotor 12 under whirl conditions. In another construction, Fig. 2, the two rotors 21, 22 are not of significantly different radii and are connected at their ends by thin rings 23. The two rotors are given different values of E by forming circumferential grooves 26 on the rotor 21, the rotors engaging one another at antinodal positions under whirl conditions. In a further construction, Fig. 3, the rotors 31, 32 are made of different length by making the inner rotor 31 in two sections 31a, 31b connected at their ends to the rotor 32 by thin rings 33, 38. The sections 31a, 31b are connected by a resilient coupling 37. In a fourth embodiment (not shown) the two rotors are made of materials having different densities.
Patent GB-878575-A (GB)
Title: Improvements in forage harvesters
Inventor: YOUNG DANIEL ARTHUR
IPC: A01D34/43
Filed: 1958-09-11
Abstract: 878,575. Vegetation-disintegrators. LUNDELL (GREAT BRITAIN) Ltd. Sept. 8, 1959 [Sept. 11, 1958], No. 29197/58. Class 6(3). A forage-harvester of the rotary-flail type is arranged to be close-coupled to a tractor through at least the two lower hitch-links. In Fig. 1, the implement is fully mounted and has a main frame 4 which carries the flails, (not shown), within a casing supported on skids 25. A triangulated frame 8 for attachment to the three hitch-links extends forwardly on struts 5, 10. A shoot 12, extends upwardly to a discharge flap 13 and is hinged, at 14, for access to the flails. A power drive 23 to the flails from the tractor is transmitted through a gearbox 22 and belt 19. In Fig. 5, the implement is semi-mounted and rests on rear wheels 46. The upper hitch-link 48, 49 is telescopic and may be hydraulically extensible through a cylinder 48 to adjust the the height of cut of the flails 1.
Patent GB-810365-A (GB)
Title: Improvements in or relating to sealing ends for gas-pressure electric cables
IPC: H02G15/22
Filed: 1957-09-17
Abstract: 810,365. Cable end sleeves. PIRELLI S.p.a. Sept. 17, 1957 [Sept. 29, 1956], No. 29209/57. Class 36. In a sealing end for gaspressure cables comprising, for the or each cone 2, a tubular insulator 16 fitted with a cap 4 to which the core conductor is connected, the core being wrapped in varnished silk 6 to prevent penetration of fluid insulant 8 from the insulator into the cable, a tubular insulating jacket 18 is provided within the insulator to form an annular space 17 communicating with the cap 4 and with a gas-filled space within the cable. The insulator has a metal base 3 and stuffing box 5 below which is a box 15 into which extends the cable sheath 1 or, in the case of a threecable, a tube leading to a trifurcation chamber. The jacket 18, which may be of polyethylene or an acrylic, polyvinyl or polyamide resin, is fixed at 19 to the base 3 and contains the fluid insulant 8. The gas is fed into the space 17 by a small external metal tube 25 which is fitted into the base 3, is connected with the box 15 and may form a branch from the gas supply 9.
Patent GB-992311-A (GB)
Title: Improvements in or relating to coating compositions
Inventor: WILSON ALEC FRANK
IPC: C08G69/44
Filed: 1960-08-24
Abstract: A method of making a concentrated thixotropic material comprises reacting a polyamide of a polymeric fatty acid with an epoxy or hydroxyl-containing compound under conditions conducive to esterification until the acid value of the mixture has fallen by not less than half the acid value of the mixture, the polyamide having an acid value of at least 25 mg. KOH per gram and having a molecular weight in the range 800 to 5000, the epoxy or hydroxyl-containing compound being selected from (a) hydroxyl terminated polyalkylene oxides of the general formula R(OR1)nOR2, or a tri- or tetra-hydric alcohol, one or more hydroxyl groups of which are etherified with hydroxyl terminated polyalkylene oxides, of general formula (HO)pR3(OR1)nOHm, where R is hydrogen, alkyl or hydroxyalkyl, R1 is alkylene, R2 is hydrogen or hydroxyalkyl, R3 is the hydrocarbon residue of a tri- or tetrahydric alcohol, and, when R3 is the residue of a trihydric alcohol p is 0, 1 or 2 and m is (3 - p), and, when R3 is the residue of a tetrahydric alcohol p is 0, 1, 2 or 3 and m is (4 - p); (b) polyethylene or polypropylene glycols having a molecular weight of 600 to 4000; (c) aliphatic diols containing at least 4 carbon atoms separating the hydroxyl groups; (d) aliphatic monohydric alcohols; (e) partial esters of polyhydric alcohols with fatty acids, polymerized fatty acids and/or rosin acids; (f) alkyd resins containing a substantial excess of free hydroxyl over free carboxyl groups and (g) epoxidized fatty oils or alkyl esters of epoxy fatty acids. Examples are given.
Patent GB-396029-A (GB)
Title: Improvements in or relating to carburettors for heavy liquid fuels
IPC: F02M21/00
Filed: 1931-10-21
Abstract: 396,029. Vaporizers. BOLYAI, F., 52, Margit Rakpart, and ROSENBERG, E., 13, Zoltan u., both in Budapest. Oct. 21, 1931, No. 29263. Convention date, Oct. 22, 1930. Void [Published under Sect. 91 of the Acts]. [Class 7 (iii).] Heavy oil from a float chamber 16 and air are mixed in a chamber 3 and drawn into a pump 1 during the suction stroke, and during the compression stroke the mixture is vaporized by the heat produced, and delivered past an adjustably loaded valve B to the engine cylinders through a pipe 19. The amount of fuel delivered into the chamber 3 is regulated by a needle valve 10, which is adjusted from a distance through a bell-crank lever 76. The valve 13 may be loaded by a spring fitted with a pointer and moving over a dial. In a modified construction, the mixture is drawn into the head of the pump past a cam-operated valve.
Patent GB-903409-A (GB)
Title: An improved gasket and the method of making the same
Inventor: FRYER JOSEPH WILLIAM
IPC: F16J15/10
Filed: 1959-08-27
Abstract: 903,409. Joint-making packing. WALKER & CO. Ltd., JAMES. Aug. 15, 1960 [Aug. 27. 1959], No. 29307/59. Class 122 (3). A gasket is formed by spirally winding strip 10 cut from sheet material so that the cut edges 11, 12 provide the sealing surfaces of the gasket. The strip may be corrugated before winding to have a V, W or M-shape cross-section and, preferably, the convolutions are bonded together by an adhesive during winding. The sheet material may be compressed and may be of natural and/or synthetic rubber, a rubber and asbestos fibre mix, asbestos fibre reinforced with metal gauze, a suitable plastic, or asbestos cloth reinforced with metal wire. A metal ring may be sprung into engagement with the inner periphery of the gasket. Specification 720,040 is referred to.
Patent GB-445588-A (GB)
Title: Improvements in the manufacture of pigments
IPC: C09C1/06
Filed: 1934-10-13
Abstract: Zinc sulphide pigments such as lithopone or pure zinc sulphide are obtained by double decomposition, and the crude pigments are heated with liquid water containing no dissolved substances to a temperature above 100 up to 370 DEG  C.  Prior to the water treatment the crude pigments are washed free from the reaction liquids except where the conditions are such that at the end of the reaction, the liquid consists of water with substantially no dissolved substances.  The pigments are subsequently cooled, filtered, centrifuged, pressed, washed, acidified, dried, ground, and sifted.  In an exmaple, zinc sulphate solution is heated and mixed with barium sulphide solution in such proportion that complete double decomposition and precipitation occurs.  The mixture is then heated in a closed vessel to 350 DEG  C. for an hour, filtered, washed, dried, and ground.  In another example, zinc sulphate solution is treated with sodium sulphide solution, and when precipitation is complete, the mixture is filtered and the precipitate washed.  The pigment is then heated with water in a closed vessel to 360 DEG  C., under 180 atmospheres pressure.  It is cooled, filtered, dried, and ground.
Patent GB-659567-A (GB)
Title: Improvements relating to cabinets, sideboards and like articles of furniture
IPC: A47B69/00
Filed: 1949-11-17
Abstract: 659,567. Cabinets and drawers. NATHAN, Ltd., B. & I., and NATHAN, B. Nov. 17, 1949, No. 29399. [Class 52 (i)] In a cabinet &c. of the kind which is provided with a storage structure comprising a sliding drawer normally housed within the cabinet &c. and having a hinged door or doors which, when the drawer is drawn forwards, are adapted to swing outwardly the swingable door or doors when the sliding drawer is drawn forwards, can be swung outwards through 180 degrees to provide improved access to the stored articles. As shown a sideboard comprises side compartments closable by doors 2, top and bottom shallow compartments closable by doors 8, 9 and a sliding structure 11 closable by doors 17. The doors 17 comprise front panels connected to side wings 18 provided with vertical pivots in the middle portions of their top and bottom edges such pivots co-operating with the top and bottom frame members of the sliding structure 11. When after drawing the structure forwards the doors 17 are opened and swung out through 180 degrees the top and bottom rear edges of the front panels of the doors enter notches 23a in the structure frame. Shelves 24 with guard rails 25 are fitted to the doors which shelves, when the doors are opened are flush with the front of the structure 11. The front portion of the top of the structure forms a serving table for cocktails. When the doors are closed and the structure pushed bodily into the sideboard a flush surface is obtained.