baber/WOPTO huggingface dataset:
Patent GB-1408423-A (GB)
Title: Signal handling arrangements and frequency diversity combining arrangements utilising the same
IPC: H04B7/12
Filed: 1972-04-11
Abstract: 1408423 Diversity reception MARCONI CO Ltd 16 Jan 1973 [11 April 1972] 16738/72 Heading H4L A known arrangement for bringing received signals into a predetermined phase relationship for use in a frequency diversity predetection combining system, is modified to minimize unwanted phase-shifts arising from the use of filters. In the known arrangement, Fig. 1, terminals A, B, receive respective frequencydiversity signals to be combined at OP. If the transfer characteristics of the combining circuits are square law the A.G.C. circuit 15, 16 controlling amplifiers 13, 14 provides ratio-squaring in known manner. Assuming that the signal at A is 70 MHz with phase angle α and the signal at output OP is 59À3 MHz with phase angle #, these two signals are supplied to a balanced mixer 5 whose output via a narrow band filter 7 is a difference signal output of 10À7 MHz without modulation and with phase angle α - # which is supplied to a balanced mixer 6 receiving also the 70 MHz input. The difference signal from mixer 6 is 59À3 MHz with modulation and instantaneous phase angle # so that the instantaneous phase angle of the incoming signal has been removed. Channel B operates similarly and is assumed to have an input of 70 MHz + #F so that the output of filter 7B will be 10À7 MHz+ #F and the output from mixer 6B via filter 8B will be 59À3 MHz as before. However, due to the difference in frequencies of the signals passing through filters 7 and 7B, the output signals applied to terminals 9, 9B will acquire relatively different phase shifts due to the phase/ frequency characteristics of the filters and the present invention reduces these phase errors. In one arrangement, Fig. 2 (not shown), the filters 7 are replaced by a phase-locked loop circuit which acts as a tracking filter having a narrow bandwidth of the same order as that of filter 7 and trackable over a range corresponding to the difference in input signal frequencies which may be expected in use. This arrangement provides a constant output level which does not permit ratio-squaring. In a modification of this arrangement, Fig. 4, the phase-locked loop 24 is connected between mixers 5 and 6 as before but in addition, a synchronous-detector 22, 23 provides an output to a low-pass filter and amplifier 26 which is linearly proportional to the output of mixer 5, i.e. is proportional to the amplitude of the input signal. The output of filter 26 controls a PIN diode attenuator 25 providing an output which is proportional to the square of the input signal which is the condition required for ratio-squaring. In a further arrangement, Fig. 3, the filter 7 is replaced by a tracking filter 18  controlled via an active low-pass filter 20 by a frequency discriminator 19 deriving one input from the mixer 5 and the other from an oscillator 21 whose output frequency is the centre frequency of the tracking filter. The output of filter 18 is amplitude linear, permitting ratiosquaring.
Patent GB-1355761-A (GB)
Title: Honeycombs
IPC: B29C33/30
Filed: 1972-04-12
Abstract: 1355761 Artificial honeycombs M SCHMIDT 12 April 1972 [17 April 1971] 16754/72 Heading A1M [Also in Division B5] An artificial honeycomb of synthetic plastics comprises a centre wall 1 on both sides of which a plurality of cell walls 2, 2' are formed. The inner surfaces of the cells may be formed with a hexagonal planar centre part 4 and inclined surfaces 5 or may be hemispherical (Fig. 2 not shown) and the cell form may be hexagonal or circular. The cell walls 2, 2' taper away from the centre wall 1 and are of a lesser extent than normal honeycombs being 1/3 to ¢ of the extent of natural bee cells. A spacing and suspension device, Fig. 4, comprises members 10, 11 of plastics having: resilient spacers 16, 17 and 18, 19 thereon which cooperate with corresponding spacers on the next honeycomb, projections 20 formed to fit within the cells, and extensions 14, 15 at their upper ends extending from the edge of the honeycomb to support it in the hive. A locking device 22 of plastics holds the members 10, 11 together. An alternative suspension device, Figs. 6 and 7 (not shown) has handles (28) and is held together by screw connections (26). The honeycomb is injection moulded (Fig. 8) using a fixed mould part 30 and a movable part 31 which is detachable. The fixed part 30 has integral mould heads 33 with ejection members 36 and also further plain heads 39 bolted to it. The movable part 31 has plain heads 45 bolted to it, the taper of the side walls 47, 48 of the heads 45 being greater than that of the side walls 49, 50 of the heads 39 to simplify removal of the hoheycomb 51.
Patent GB-172675-A (GB)
Title: Improvements in or relating to carburettors for internal combustion engines
IPC: F02M1/00
Filed: 1920-06-22
Abstract: 172,675. Dawson, C. E. June 22, 1920. Spray carburettors.-A carburettor is provided with successive series of additional hot air inlets which are arranged between an uncontrolled primary hot air inlet or inlets and cold air inlets, the additional hot air inlets and the cold air inlets being controlled by a suction-actuated differential sleeve valve. As shown, the fuel nozzle 3 is situated in a chamber 2 supplied with air at a temperature of at least 350‹ F. through an inlet 1, the nozzle being provided with a tubular extension 11 containing uncontrolled air inlets 4 and surmounted by a second extension 12 which coacts with an inner or outer sleeve 8a carried by a suction-actuated member 17 to control successive series of hot air inlets 7, 7a. Additional series of such inlets may be provided between the inlets 7, 7a. The member 17 carries also a sleeve 8 provided with ports 10 which act in conjunction with cold air inlets 5 provided in the casing 13. The ports 5 may be closed at starting by a manuallyoperated sleeve 30. The sleeve 8 is prevented from rotating by an arm 25 working in a slot 26, the arm carrying an adjustable screw 27 which bears on the head of the spring-lifted fuel valve 21. A hand-operated cam or other mechanism may be provided to lift the sleeve 8 at starting, thus allowing the fuel valve to open. A baffle plate 18 is carried either by the member 17 or sleeve 8 and an annular baffle may be mounted on the sleeve 8. The extension 11 and nozzle 3 may be heated at starting by electric coils. The chamber 2 is lined with heat-resisting material 15 which may be covered by a protective sheathing 16 of sheet metal. According to the Provisional Specification, the carburettor described in Specification 28158/10 is modified in that the fuel carries at the upper end a short tubular extension provided with air inlets and which acts as an obturator for the primary air cone. The primary air cone is also provided with a tubular extension and is carried by a suction-actuated member provided with baffles which controls the cold air inlets and also the fuel needle valve. Part of the hot air supplied through the primary air cone thus passes through the air inlets in the nozzle extension and part passes between the extension and the cone, the mixture produced being then mixed with cold air.
Patent GB-937658-A (GB)
Title: Improvements in or relating to air guns
Inventor: VESELY JOSEF
IPC: F41B11/73
Filed: 1959-05-19
Abstract: 937,658. Air guns. BIRMINGHAM SMALL ARMS CO. Ltd. May 20, 1960 [May 19, 1959], No. 16880/59. Class 119. A piston and buffer assembly for an air gun comprises a substantially tubular piston formed at one end with a plate having an aperture receiving an anchoring part of the buffer, the anchoring part and the aperture being freely separable but being so arranged that when the assembly is inserted into the cylinder of the gun, such separation is prevented by the engagement of the piston and buffer with the cylinder. In one form the plate 9, Figs. 1, 4, is secured at one end of the piston 1 and has an aperture 10, 11 shaped and located as shown. The buffer comprises an air-sealing washer 3, a metal washer 4, a resilient washer 5 of oil-resistant rubber or plastic and a second metal washer 6, all mounted on a stud 2 formed with a reduced reduced portion 7 and a head 8. To anchor the buffer to the piston, the head 8 is passed through the outer portion 11 of the aperture and the buffer moved radially so that the reduced portion enters the central portion 10 of the aperture, the head 8 preventing axial withdrawal through this portion of the aperture. On insertion of the assembly into the cylinder (not shown), the buffer cannot move radially with respect to the piston and is thus securely anchored thereto. In another form the piston and buffer are of substantially square crosssection with a raised rib 19, Fig. 9, along its upper surface. The plate 28 is formed with a central aperture 29 having extensions 30 forming a slot adapted to receive the flat head 26, Fig. 11, of the buffer stud which is shaped as shown. The head 26 is passed through the slot of the plate and the buffer then turned through 90 degrees to engage the head 26 behind the plate 28 and to bring the buffer into alignment with the piston. In this position the buffer is anchored to the piston against axial removal and since the piston and buffer are non-circular, when the assembly is inserted into a complementary cylinder of the gun, the buffer cannot rotate relative to the piston and is thus anchored. The pistons in both embodiments are formed by pressing or like operations from a suitably shaped blank of sheet metal, slots being punched out for slidably receiving the cocking lever of the gun and for forming a bent for engagement by a sear of the gun action.
Patent GB-594869-A (GB)
Title: Improvements in or relating to holders for electrodes used in electric arc welding
IPC: B23K9/28
Filed: 1945-07-03
Abstract: 594,869. Welding electrode holders. PETERS & CO., Ltd., G. D., and BLACKSHAW, J. E. July 3, 1945, No. 16913. [Class 39 (iii)] An electrode holder comprises a main member 1 having a fixed jaw 2 and a pivoted movable jaw 5 actuated by a toggle mechanism formed by inter-pivoted links 8, 13, one of said links 8 being joined to the operating handle lever 11 and the other 13 being pivoted to a relatively fixed but adjustable anchorage 14 whereby operating the handle 11 the pivoted links 8, 13 are moved a slight distance beyond the deadcentre position whereon the movable jaw 5 grips the electrode, the anchorage 14 being adjustable by screwing inwardly or outwardly the carrier nut 17 so as to ensure effective grip on any selected electrode within a given range of sizes. The toggle link 13 carries two projecting arms 21, 22 engaging with the operating lever extension of the link 8 whereon lug 21 serves to limit the handle movement on opening and the other 22 limits the movement of the link pivot 12 beyond the dead-centre position on closing.
Patent GB-673682-A (GB)
Title: Improvements in or relating to machines for pulping animal and vegetable substances
IPC: B02C18/36
Filed: 1949-06-27
Abstract: 673,682. Mincers. STETTLER, W. June 27, 1949 [March 26, 1946], No. 16975/49. Classes 28 (ii) and 49. A machine for pulping animal and vegetable substances comprises mounted in a casing one set at least of co-operating rings having teeth in their opposing curved surfaces, one ring being fixed and the other rotatable. In the mincer of the drawings a disc 4 rotating on a shaft 2 has cutting teeth 5 which are at an acute angle to the shaft axis and a ring 8, of width equal to the maximum thickness of the disc 4, having, on its inner surface, cutting teeth 9 at the same acute angle to the shaft axis as the teeth 5; the clearance between the teeth 9 and the teeth 5 is less than 0.5 mm.; a slot 11 in the ring 8 fits over a rib 12 on the casing of the mincer to prevent rotation of the ring 8 and the ring 8 is fixed on the casing by means of a screw-threaded ring 10; a ring 7 of larger diameter than the disc 4 and secured thereto by arms 6 is accommodated in a recess of the ring 8 to prevent axial displacement of the disc 4; at the feeder side of the cutting teeth is a perforated disc 13 having on its edge a slot which fits over a rib on the casing to prevent turning in the casing. The Specification as open to inspection under Sect. 91, comprises also a process for preparing a meat block by pulping rinds, bladders and tendons to set free gelatinous substance, mixing with hot fat at raised temperature, and working afterwards with a meat admixture. This subject-matter does not appear in the Specification as accepted.
Patent GB-562296-A (GB)
Title: Improvements relating to hoppers for feeding coal to furnaces
IPC: F23K3/16
Filed: 1942-12-02
Abstract: 562,296. Delivering material from hoppers. CROSTHWAITE FURNACES & SCRIVEN MACHINE TOOLS, Ltd., and WHITE, E. C. Dec. 2, 1942, No. 17154. [Class 78 (i)] A method of feeding coal slurry or coal duff mechanically through a hopper into a furnace consists in loosening the slurry by fingers or equivalent devices which move upwards through the material as it moves downwards under gravity through the hopper. The apparatus shown in Fig. 2 comprises a hopper 1 having a vertical back wall 2 and an inclined front wall 3. The base is rounded and is formed with an opening 5 through which the slurry passes to a space 6 whence it is pushed by a reciprocating plunger 7 towards a swinging feeder 20 that throws it into the furnace. An endless chain 8 passes round sprockets 9, 10 within the hopper, and is provided with transverse bars furnished with fingers 12. The inner run of the chain moves upwards, and the fingers move through and loosen the descending slurry. In a modification, carriers 29 which reciprocate along the inner faces of the hopper are provided with pivoted fingers 30. These fingers project into the slurry on the upstroke, but swing back on to the carrier on the downstroke. If desired, the fingers may be moved positively between the two positions. A secondary loosening device may be formed by chains or rods extending between two carriers, or it may consist of a roller 32 with radial fingers 33 that move across the opening at the base of the hopper.
Patent GB-120773-A (GB)
Title: Improvements in or connected with Engines, Motors, Pumps or like Apparatus.
Inventor: CAREY ROBERT FALKLAND
IPC: F04B1/04
Filed: 1917-11-21
Abstract: 120,773. Carey, R. F. Nov. 21, 1917. Drawings to Specification. Cylinders; pistons.-A radial revolving-cylinder motor or pump is provided with balls or rollers as pistons. In the latter case, the cylinder is rectangular, and two of its sides are formed by stationary disk valves bearing on either side of the rotor.
Patent GB-235030-A (GB)
Title: Improvements in or relating to moulds for typographical line casting machines
IPC: B41B11/52
Filed: 1924-07-17
Abstract: 235,030. Linotype & Machinery, Ltd., and Drake, T. July 17,1924. Moulds, type-bar. A mould for forming sectional type-bars comprises a liner 1, Fig. 5, extending the full length of the mould, and having integral with it one or more division pieces or ribs 6. The liner is provided with the usual locating-ribs 3, and is held in position between the mould-cap 2 and the mould-body 5. The ribs. 6 do not extend entirely across the mould, so that adjacent type-bars are connected by a thin neck of metal. The liner has grooves 7, Fig. @, on its underside for forming the known ribs on the type-bars, and the grooves are flared at the ends, so as to form projections, which prevent blank slugs from being withdrawn from the mould by the metal-pot mouthpiece.
Patent GB-339295-A (GB)
Title: An improved means for dispersing fog or mist
IPC: E01H13/00
Filed: 1929-06-05
Abstract: 339,295. Lloyd, H. A., and Wright, F. A. June 5, 1929. Casings.-Apparatus for dispersing fog or mist, for enabling light from a lamp to penetrate foggy atmosphere, and for extracting steam, &c. from workrooms, &c., comprises a perforated casing or wire cage having electric heating-elements mounted therein, a motor in a casing supported on the perforated casing with its shaft extending between the heating-elements, a fan on the motor shaft to expel heated air along a substantially straight path through an air passage, and a wire gauze or like screen inserted in the air passage transversely to the flow of air. A separate casing i for an electric lamp or the like may be provided on the casing c, and the latter may be mounted on a vehicle, signal box, &c. The heating wires or elements a are mounted on insulating bars b carried by the end plates of the casing or wire cage c. The fan e is carried on the shaft of an electric motor mounted in a casing d on the casing c. Some of the air drawn in passes through a guide plate f close to the fan. One or more screens m may be mounted in the outlet passage h. The apparatus may be pivotally carried by a frame mounted on a swivel support k, and a handle l may be provided for moving it. Specification 313,180 [Class 75 (iii), Lamps &c., Details &c.], is referred to.
Patent GB-458366-A (GB)
Title: Improvements relating to the manufacture of paper
IPC: D21F1/46
Filed: 1935-06-15
Abstract: Paper is washed during manufacture by spraying with water free from salts in solution, e.g. distilled water.
Patent GB-652061-A (GB)
Title: Improvements in and relating to electrical detectors of vapours and the like
IPC: G01N27/70
Filed: 1948-06-28
Abstract: 652,061. Determining physical qualities of materials. BRITISH THOMSON-HOUSTON CO., Ltd. June 28, 1948, No. 17335. Convention date, July 8, 1947. Addition to 648,367. [Class 37] [Also in Groups XXI and XL (a)] Apparatus of the type described in the parent Specification comprising means for detecting finely-divided substances in a gas by bringing the gas into contact with a posititively charged, heated electrode 3, whereby positive ions are produced from the substance and collected by a negatively charged electrode 4, giving a current indicative of the concentration of the substance, characterized in that the flow of gas through the electric discharge device 1 is initially very low, but with an increase in ion current, the output of an amplifier 17 energizes solenoid 19 to close switch 20, thereby causing a blower 13 to increase the rate of flow of gas. Solenoid 19 is preferably slow to release switch 20.
Patent GB-773013-A (GB)
Title: A device for the aeration of sewage
IPC: C02F3/12
Filed: 1955-06-16
Abstract: 773,013. Aerating sewage. INDUSTRIKEMISKA AKTIEBOLAGET. June 16, 1955 [July 17, 1954], No. 17348/55. Class 111. Sewage in a cylindrical tank 1 is aerated by air pumped from a channel 13 to radial pipes 7 having openings 8, Fig. 2, arranged more closely towards the tank periphery so as to induce " cylindrical " rotation of the sewage. Two systems of pipes, 7a, 7b, Fig. 2, may be provided, the outer being fed at a higher pressure. The " cylindrical " rotation may be replaced by " spiral " rotation by feeding the sewage at 6 and withdrawing it at 12, Fig. 2, and providing quarter-size partition walls 21 at intervals along the tank. Liquid, preferably taken from the part of the tank where the pipe system is located, may be injected simultaneously with the air through the same or separate pipe systems. Specification 715,952 is referred to.
Patent GB-531756-A (GB)
Title: Device employing epicyclic or bevel gears or a combination of both for controlling the pitch of variable pitch airscrews
IPC: G05G7/12
Filed: 1939-06-14
Abstract: 531,756. Variable pitch propellers. NORTHCOTE, J. S. June 14, 1939, No. 17371. [Class 114] In variable pitch propellers in which the adjustment of the propeller blades is effected by planetary gearing a sun wheel B fast on the propeller shaft A drives planet wheel C against the internal gear D causing the spider E to rotate. The spider E drives planet gear F against internal gear G causing the sun gear H to rotate at the same speed and in the same direction as the sun gear B. The rotation of the internal gear G by the control gear L causes the sun gear H to rotate relatively to the sun gear B this rotation being transmitted to the air screw blades by the gears I and J. In a modification, bevel gear is employed in the place of plain gear wheels. Both forms are applied to the adjustment of the blades of air screws arranged in tandem.
Patent GB-110441-A (GB)
Title: Improvements relating to the Grinding of Tools for Cutting Screw Threads.
Inventor: HERBERT ALFRED
IPC: B24B41/06
Filed: 1916-12-04
Abstract: 110,441. Herbert, A., and Milburn, J. Dec. 4, 1916. Work-holders.-Tools D for cutting screw threads are secured in a carrier C adjustably clamped upon tool-support B, the inclined face of which is permanently inclined to its base at an angle equal to half the angle formed at the cutting point of the finished tool. The support is removably situated between the cheeks of a channelshaped holder A. The hole for receiving the toolcarrier is inclined slightly to give the necessary clearance. The carrier is reversible to grind the two faces of the tool and is secured by the eccentric pin J. The edges E of the holder A serve as guides for the grinding-tool.
Patent GB-423414-A (GB)
Title: Improved method of manufacturing boards and the like for building, heat and sound-insulating and similar purposes and a product thus produced
IPC: D21J1/00
Filed: 1934-06-12
Abstract: 423,414. Boards made from straw pulp &c. HAGSTROM, E. E. B., 70, Ralambsvagen, Stockholm. June 12, 1934, No. 17411. Convention date, June 15, 1933. [Class 96] Heat and sound insulating boards for building &c. are made by mechanically disintegrating straw and digesting it with caustic alkali to form a pasty mass which, after removing the alkali, is mixed with mechanically prepared straw &c. with or without size &c., suspending in water, forming a web, and cutting into sheets which are dried, e.g. between heated plates in a press. The straw is cut to 20-25 millimetres, disintegrated, the chemical straw being boiled with 2-4 per cent of its weight of caustic soda, using e.g. direct steam heating up to 2 kilograms per sq. centimetre to dissolve the silica ; and the mechanical straw being further disintegrated by two oppositely rotating grinding- discs between which air or water is passed to cool the discs and aid the passage of the straw therethrough, the straw being then boiled with 3-4 per cent of sodium carbonate but remaining substantially undigested. Highly porous boards may comprise 80 per cent mechanical strain, and dense boards 20 per cent. Mechanically defibrated wood &c. preferably steamed to remove volatile oils, may be used with the mechanical straw.
Patent GB-1014050-A (GB)
Title: New nitrofuryl derivatives
Inventor: HAACK ERICH
IPC: C07D405/06
Filed: 1965-03-15
Abstract: The invention comprises 1-(5-nitro-2-furyl)-2 - (6 - carboxamido - 2 - pyridyl) - ethylene, 1 - (5 - nitro - 2 - furyl) - 2 - (4 - acetamido - 2-pyridyl) - ethylene, 1 - (5 - nitro - 2 - furyl) - 2-(4 - amino - 2 - pyridyl) - ethylene, 1 - (5 - nitro-2 - furyl) - 2 - (4 - carboxy - 2 - pyridyl) - ethylene, 1 - (5 - nitro - 2 - furyl) - 2 - (2 - carboxy-4 - pyridyl) - ethylene and 1 - (5 - nitro - 2-furyl) - 2 - (6 - hydroxy - 2 - pyridyl) - ethylene. The compounds are prepared by the methods disclosed in Specification 1,010,582.  1 - (5 - Nitro - 2 - furyl) - 2 - (4 - carbomethoxy-2 - pyridyl) - ethylene and 1 - (5 - nitro - 2-furyl) - (2 - carbomethoxy - 4 - pyridyl) - ethylene are prepared by reacting 5-nitrofurfural with 2-methyl-pyridine-4-carboxylic acid methyl ester or 4-methyl-pyridine-2-carboxylic acid methyl ester, respectively.