baber/WOPTO huggingface dataset:
Patent GB-1507147-A (GB)
Title: Multiplexing arrangements
IPC: H04B1/74
Filed: 1974-09-25
Abstract: 1507147 Waveguide multiplexing junctions MARCONI CO Ltd 28 July 1975 [26 Sept 1974] 41817/74 Heading H1W A multiplexing circuit, e.g. for television channels in a satellite, comprises a circular waveguide 14 short-circuited at one end 9 and coupled to orthogonal pairs of rectangular waveguides 10, 12; 11, 13, &c. each arranged at such axial distance from the short-circuit 9 that the latter appears to be an open circuit at the frequency of the respective carrier signal. In the twochannel system shown, a carrier C1 is coupled through waveguide 10 to the waveguide 14 and excites it in the TE11 mode. Waveguide 10 is spaced from short-circuit 9 by one quarterwavelength at the appropriate frequency. A further carrier C2 is coupled through waveguide 11 to the waveguide and also excites it in the TE11 mode. Waveguide 11 is spaced from the short-circuit 9 by three quarter-wavelengths at the appropriate frequency. Both carriers propagate towards the output 14. Waveguides 12, 13 are arranged in the same transverse planes as waveguides 10, 11 respectively and are connected to stand-by transmitters for respective channels C1 and C2. They excite the waveguide 14 in a TE11 mode orthogonal to the mode excited by waveguides 10, 11. Waveguides 11 and 13 contain band-stop filters for preventing transmission of the carrier C1. The output 14 is connected to an antenna capable of transmitting both polarizations.
Patent GB-969422-A (GB)
Title: Snow melting apparatus and method
IPC: E01H5/10
Filed: 1962-11-06
Abstract: 969,422. Melting snow. THERMAL RESEARCH & ENGINEERING CORPORATION. Nov. 6, 1962 [July 31, 1962], No. 41883/62. Heading E1G. In snow melting apparatus, combustion gases are directed from a burner nozzle surrounded by a downcomer tube down through a body of water in a housing around which snow is heaped, and discharged laterally from the lower end of the downcomer tube to force water to spill over the top of the housing into the snow surrounding it. As shown, Fig. 1, snow is loaded into a tank 11 around a burner housing 35, a minimum level w, Fig. 5, of melted snow being maintained in the housing due to the height of the openings in drain pipes 12 in the tank, the level being variable by adjustment of outlet valves 14. A downcomer tube 30 surrounding a burner 21 has a closure plate 31 spaced from its lower end which is located above the lower end of the housing 35. The upper end of the housing is cut away at 36 over the major part of the side in contact with the snow. In operation hot combustion gases from the burner 21 flow out from the downcomer tube at 33 heating the water within the housing 35 and forcing it over the cut away edge 37 on to the snow in the tank 11. A deflector plate 17 prevents water splashing upwardly out of the tank. In an alternative embodiment (not shown) a tank has a burnit unit at each end. The method may be carried out without the tank by heaping snow around a burner/housing unit supported by known means in a pit.
Patent GB-1245092-A (GB)
Title: Improvements in or relating to gang mower machines
Inventor: MANN DAVID JOHN
IPC: A01D75/30
Filed: 1967-09-15
Abstract: 1,245,092. Gang mowers. RANSOMES SIMS & JEFFERIES Ltd. 13 Sept., 1968 [15 Sept., 1967], No. 42263/67. Heading A1F. A gang mower machine comprises a main frame 10 mounted on ground wheels 11, a sub-frame 19 fitted with cutter units (shown in dotted outline) being connected to the main frame by linkage 40, 41 and 42, 43 which permits pitching movement of the sub-frame in the direction of travel and vertical movement relative to the main frame, and a hydraulic ram 57 operable to lift the sub-frame and raise the cutter units off the ground. To achieve the raised position the ram rotates arm 60 which rotates shaft 47 via shaft 44 and links 52, 54 and 53. In the fully raised position the links 42, 43 and 40, 41 overcentre so that the sub-frame assembly is retained thus by its own weight. At the front of the machine each of two cutter units is connected to the sub-frame by two shafts 35, 36 to allow rocking about a fore-and-aft axis. Wing cutters may be mounted on arms pivoted on the main frame and adapted to be rotated by hydraulic rams to a transport position in which the lifting arms are upright with their cutter units positioned above the main frame.
Patent GB-1400114-A (GB)
Title: Electric vacuum cleaner apparatus
IPC: A47C13/00
Filed: 1973-09-10
Abstract: 1400114 Suction cleaners; suction cleaners with seats and stools MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 10 Sept 1973 [12 Sept 1972] 42545/73 Headings A4F and A4H [Also in Division B 1] A suction cleaner has a housing 9 containing a fan 2, Fig. 8 (not shown) and a dust collector 4, which is removable from the housing 9 by a substantially horizontal movement through a side wall, and a cover 5 for placing on the housing 9 when the apparatus is not in use, the cover 5 enclosing means, e.g. a top plate 11, for storing flexible hose, and being provided with a seat 6 so that the cleaner, or the cover 5 only, may be used as a stool or foot stool. The housing 9 also contains an electric cable reel 26 having a winding spring 28 and formed with a gear 29 meshing with a pinion 30 coupled via a dog clutch 31, 32 with gearing driving a crank 19 for shaking a fine dust filter 18 covering an outlet opening of the dust collector 4. A coarse dust filter 17 surrounds the filter 18. A suction hose 12, Fig. 6 (not shown) incorporating electric conductors is fitted into an opening 15 in the dust collector 4 and has a fan motor control switch at its free end. An upstanding wall 35 on the top plate 11 has mounted thereon a carrying handle 40 for the cleaner, and the inside of the cover 5 has mounting brackets for suction tools and an extension pipe.
Patent GB-1279968-A (GB)
Title: Improvements in or relating to tyre shaping apparatus
Inventor: ASKAM JOHN FAIRBURN
IPC: B29D30/24
Filed: 1968-09-07
Abstract: 1279968 Tyre building drums DUNLOP HOLDINGS Ltd 5 Sept 1969 [7 Sept 1968] 42683/68 Heading B7C A tyre building drum comprises an inflatable annular diaphragm 3, a pair of annular sleeves 7 overlapping the respective end 4 of the diaphragm, at least one sleeve 7 allowing unrestricted passage thereover of a tyre 2, and means for moving the diaphragm end assemblies 1 towards each other by equal amounts during inflation of the diaphragm. The axially outer ends of the sleeves are tapered at 11 and have an internal screw-thread 8 engaging a thread 9 on an end plate 6. The sleeves may be axially displaced relative to the plates thereby. The tyre, beads 14 remain free of restraint throughout inflation.
Patent GB-1449580-A (GB)
Title: Method and apparatus for descaling and planishing sheet metal strip
IPC: B21D1/05
Filed: 1974-10-02
Abstract: 1449580 Descaling and planishing strip BWG BERGWERK-UND WALZWERKMASCHINENBAU GmbH 2 Oct 1974 [8 Oct 1973] 42828/74 Headings B3E B3A and B3M Metal strip is subjected to alternating bending at a first degree of stretch corresponding to optimum descaling, e.g. between 0.5% and 1À3% and is then planished by alternating bending at a higher degree of stretch, e.g. 2% to 3%. This is done on the apparatus of Fig. 1, comprising three driven bridle roll stands 2 with interposed alternating bending units 4.
Patent GB-1156684-A (GB)
Title: Flame Cutting Machine having Detachable Torch Holder
IPC: B23K7/10
Filed: 1966-09-26
Abstract: 1,156,684. Cutting py fusion. MESSER GRIESHEIM G.m.b.H. 26 Sept., 1966 [24 Sept., 1965], No. 42846/66. Heading B3V. A cross-carriage type flame cutting machine has a vertically movable cutting torch 2 carried by a housing 1 detachably secured to an upper carriage member 8 of the machine by a pair of grooves 9, 10 in the latter which are engaged by supporting projections such as 17, 20 in the housing. Two upper projections (16), 17, Fig. 2 (not shown), have hemispherical bearing surfaces and the lower projection is provided by a screw 20 with a hemispherical end 15. Adjusting screws (22), 23, Fig. 2 (not shown), are also provided.
Patent GB-1190295-A (GB)
Title: Improvements in or relating to a Method of Granulating Calcium Sulphate Hemi-Hydrate
IPC: C01F11/46
Filed: 1968-09-10
Abstract: 1,190,295. Calcium sulphate hemihydrate. RIGIPS BAUSTOFFWERKE G.m.b.H. 10 Sept., 1968 [26 Sept., 1967], No. 43059j68. Heading C1A. Calcium sulphate hemihydrate is granulated by agitating calcium sulphate hemihydrate either mechanically or pneumatically in the presence of water at 80-90‹ C. and then drying the product. Before or during granulation there may be added methyl cellulose, quartz powder, powdered limestone, perlite dust, asbestos fibres or inorganic colouring matter. An inorganic expanding agent may be added before granulation.
Patent GB-1086877-A (GB)
Title: Process for the production of polyamides
IPC: C08G69/26
Filed: 1964-10-22
Abstract: Polyamides are prepared from a diamine of formula <FORM:1086877/C3/1> in which R1- 3 are alkyl groups and a mixture of an aliphatic dicarboxylic acid and an aromatic or hydrogenated aromatic dicarboxylic acid. The diamine specified is that in which R1 = R2 = R3 = Me. Aliphatic dicarboxylic acids specified are adipic acid and its mono-, di- and trialkylated derivatives, e.g. trimethyl adipic acid, succinic, malonic and maleic acids.  Aromatic and hydrogenated aromatic acids specified are phthalic, iso- and terephthalic and hexahydroterephthalic acids.  These latter acids may constitute 3-70% of the total acid content.  The reaction mixture may also contain a diamine of formula NH2(CH2)xNH2 where x = 2- 10.  The acid/amine salts may optionally be used for the condensation reaction in place of the acids and amine.  Condensation may be at 150-300 DEG  C.  In Example 1, aqueous alcohol is used as a solvent.
Patent GB-1135857-A (GB)
Title: Decatrienes
IPC: C07C2/04
Filed: 1966-09-28
Abstract: 1,135,857. Nickel complexes. B. F. GOODRICH CO. 28 Sept., 1966 [28 Sept., 1965], No. 43215/66. Heading C2J. [Also in Division C5] Nickel complexes such as bisacrylonitrile nickel, bisfumeronitrile nickel, biscinnamonitrile nickel and bisacrolein nickel are prepared by refluxing Ni(CO) 4  with a compound containing activated double bonds and the product isolated by filtration. They are used as catalysts in the preparation of decatrienes from butadiene-1,3 or isoprene with ethylene (see Division C5). Reference has been directed by the Comptroller to Specification 977,108.
Patent GB-1385535-A (GB)
Title: Cds thin film solar cell
IPC: H01L31/0216
Filed: 1972-09-19
Abstract: 1385535 Solar cells COMMUNICATIONS SATELLITE CORP 19 Sept 1972 [20 Sept 1971] 43234/72 Heading H1K The decrease in output of a solar cell comprising a heterojunction between P-type CuxS and N-type CdS with time is reduced or eliminated by providing on the surface of the cell exposed to radiation a layer which prevents radiation of a wavelength greater than a value between 0-7 and 0-9 Á reaching the cell. The layer either reflects or absorbs the unwanted radiation. The relationship between the cut-off wavelength and the change in output with time is discussed.
Patent GB-1056895-A (GB)
Title: Improvements in ladling apparatus for delivering measured volumes of molten metal
Inventor: GLEN CHARLES GEOFFREY
IPC: G05D7/06
Filed: 1964-10-23
Abstract: 1,056,895. Metal pouring apparatus. GAS COUNCIL. Oct. 15, 1965 [Oct. 23, 1964]. No. 43358/64. Heading B3F. [Also in Division B8] Apparatus for receiving molten metal in a continuous stream and delivering it intermittently in measured quantities, e.g. to a diecasting machine comprises a pot 1 (Fig. 1, not shown) having a closed compartment 3 which is supplied at its lower end by a duct or aperture 15 with molten metal from a further, opentopped compartment 4 which acts as a receiver for the stream of molten metal; a syphon pipe 13 is arranged to discharge the required quantities from the compartment 3, operation of the syphon being initiated by a pulse of compressed air admitted to compartment 3 by a pipe 6 which is normally open to atmosphere but which includes a valve or valves controlled by electrical level-sensing probe means 7 in such a way that when the molten metal reaches the probe 7 a circuit is completed, the pipe 6 closed to atmosphere and opened to a supply of compressed air. The aperture 15 is kept small to minimize flow therethrough in either direction during the discharge phase. A jacket 8 surrounds the pot 1 and may be supplied with gas and air or alternatively with air alone, at rates controlled by temperature sensing means (not shown) to regulate the temperature of the molten metal. In a modification (Fig. 2, not shown) communication between the two compartments is by means of an N-shaped pipe adapted to prevent return flow of molten metal when the pulse of air is applied to the closed compartment. In a further modification (Figs. 3, 4, not shown) an inverted cupshaped vessel is disposed within an oval, opentopped crucible, the wall of the inverted vessel constituting the partition between the compartments. An inner cylindrical wall of the inverted vessel surrounds the upper end of a straight upwardly projecting pipe to form a syphon pipe arrangement. The electrical control circuit (Fig. 5, not shown) includes a manually operated switch for operation of the valves which admit the pulse of compressed air.
Patent GB-1086744-A (GB)
Title: Method of and apparatus for the calibration of tubes
IPC: B29C48/90
Filed: 1964-10-27
Abstract: 1,086,744. Sizing extruded tubing. A. G. PETZETAKIS. Oct. 27, 1964 [Nov. 22, 1963], No. 43838/64. Heading B5A. A rigid former 13 attached to the nozzle 11 of an extrusion machine is provided with endless flexible tapes 17 which run through slots 15, 15<SP>1</SP> and 16, 16<SP>1</SP> to form a substantially cylindrical surface which moves with a tube 19 extruded from nozzle 11 and hauled off by rolls 18. The tube which may be of thermoplastic, thermosetting or elastic material is subjected to heating or cooling, as appropriate, as it passes along former 13 to cure, vulcanize or set it. The internal diameter of the tube is determined by former 13 and the tapes prevent friction therebetween. A preferred material for the tapes 27 is glass fibre-reinforced P.T.F.E. The former 13 may have an anti-friction coating and be provided with grooves which guide the tapes. Additionally, the tube may be a similarly sized externally either simultaneously or subsequently. When forming braided rubber tubing external sizing occurs at a point where additional material may be cured.
Patent GB-1253368-A (GB)
Title: Benzodiazepine derivatives and process for preparing them
Inventor: YAMAMOTO H
IPC: C07C59/84
Filed: 1968-09-19
Abstract: 1,253,368. Benzodiazepines. SUMITOMO CHEMICAL CO. Ltd. 19 Sept., 1968 [22 Dec., 1967; 27 Sept., 1967 (7); 9 Oct., 1967 (2); 18 Oct., 1967; 2 Nov., 1967 (3); 6 Nov., 1967; 8 Nov., 1967; 9 Dec., 1967; 15 Dec., 1967; 21 Dec., 1967; 10 Jan., 1968], No. 44540/68. Heading C2C. Compounds of the general formula (R 1  = H, C 1-3  alkyl, C 4-7  cycloalkylmethyl; R 2 =H, halogen; X = halogen) and their salts are prepared by reacting a compound of the formula with an oxidizing agent, optionally followed by salt formation. Reference has been directed by the Comptroller to Specification 972,968.
Patent GB-1478246-A (GB)
Title: Apparatus for calcining powder materials
IPC: C04B7/43
Filed: 1975-10-29
Abstract: 1478246 Calcining apparatus ISHIKAWAJIMA-HABIMA JUKOGYO K K 29 Oct 1975 [7 Nov 1974] 44626/75 Heading F4B Apparatus for calcining pulverulent material comprises a calciner 1 and an attached separator 3 which is fed with kiln exhaust gases via a duet 6 and with air from a clinker cooler via a duct 7. Preheated materials from a chute IIIb are discharged into turbulent conditions in the calciner 1 caused by the air from the duct 7 and gases from the duct 6, and are calcined by the heat from a burner 2 to become "primary calcined materials" which contain a proportion of uncalcined material. The "primary calcined materials" are carried to a cyclone IV where they are separated and fed into the kiln exhaust duct 6 where they are heated so that the uncalcined portion is almost completely calcined and the materials become "secondary calcined materials". These are carried by the kiln exhaust gases to the separator 3 and after separation are fed by the chute 3a into the kiln.
Patent GB-1390035-A (GB)
Title: Metal drawing apparatus
IPC: B21C3/02
Filed: 1971-10-01
Abstract: 1390035 Drawing JOSEPH LUCAS (INDUSTRIES) Ltd 27 Sept 1972 [1 Oct 1971] 45760/71 Heading B3P [Also in Division C7] A drawing die comprises hot pressed silicon nitride. The die is made by pressing a mixture of α silicon nitride powder and less than 1% by weight of magnesium oxide between graphite dies at a temperature of 1650‹ C. and a pressure of 4000 p.s.i. The silicon nitride die may be mounted in a steel support member. The die may be used for hot or cold drawing a metal rod, e.g. steel, without using any lubrication.
Patent GB-1145737-A (GB)
Title: Starting mechanisms for internal combustion engines
Inventor: SEILLY ALEC HARRY
IPC: F02N15/06
Filed: 1965-10-28
Abstract: 1,145,737. Engine turning gear. C.A.V. Ltd. Oct.7, 1966 [Oct.28, 1965], No.45775/65. Heading F1K. A starting mechanism for an internal-combustion engine comprises in combination a motor 10, a part 18 rotatable by the motor, an axially movable pinion 15 which is connected to the part through the intermediary of a quick pitch screw-thread or equivalent connection, a member 28 in screwthread engagement with a further part rigidly connected to the pinion, resilient means 29 biasing the member in a direction away from the pinion and means operable when it is required to use the mechanism for preventing rotation of the member, the arrangement being such that when the member is prevented from rotating and the motor is energized the pinion will be moved axially into engagement with a toothed wheel of the engine by the action of the quick pitch connection and in the event of a tooth on the pinion abutting with a tooth on the toothed wheel angular movement will be imparted to the pinion the member continuing to be moved axially against the action of the resilient means. As the armature 32 moves radially inwards the ratchet 30 engages the member 28 and then the motor controlling switch is closed to energize the motor at full power. As the motor starts to rotate rotary motion is imparted to the part 18 through the clutches and since the sleeve 16 cannot rotate the quick pitch thread causes the sleeve 16 and pinion to be moved axially against the action of the pinion return spring. In the event that a tooth on the pinion abuts with a tooth on the toothed wheel the pinion will be moved angularly when this occurs the member 28 will be moved axially in a direction towards the pinion against the action of the spring 29. The purpose of chamfering the teeth of the ratchet 30 and the member 28 is to prevent locking engagement occurring between the two.
Patent GB-1372043-A (GB)
Title: Manual/automatic stations for use in process control systems
IPC: G05B7/02
Filed: 1971-10-01
Abstract: 1372043 Automatic control systems BAILEY METER CO 1 Oct 1971 [1 Oct 1970] 45809/71 Heading G3R An arrangement for providing shockless changeover at least from manual to automatic control in a retroactive control system comprises a differential amplifier 46 having one input 38 connected to a process controller (i.e. an error signal source) and another to a load feedback device 66, a shunt capacitor 60 connected between an output impedance 50 and the first input, means for connecting the feedback signal to the output impedance only during manual operation and for connecting the output impedance to the load during automatic operation the arrangement being such that the amplifier is driven into saturation during manual operation and a ramp change occurs in the load current by discharge of capacitor 60 upon change over to automatic operation. Manual to automatic. In the manual mode the R.H. side of capacitor 60 is at feedback potential and upon changeover this is connected to one input 86 of a second differential amplifier 90 which controls the load current via transistor 92, the other input 88 of this amplifier being connected to the feedback device 66. Thus amplifier 90 produces no initial output, but does so gradually as capacitor 60 discharges to the level of the automatic control signal. Automatic to manual. In the automatic mode a capacitor 82 is grounded on its L.H. side; upon changeover this terminal is connected to input 88 of amplifier 90 while the other input 86 is grounded. Thus 90 produces no initial output, but a voltage source 68 or 76 is connectible by buttons 72, 80 to the capacitor which thus integrates this voltage to produce a steadily rising manual control voltage on input 88. During the manual mode amplifier 46 is disconnected at 84a and its output voltage is limited by Zener diodes 56, 58. In a particular embodiment Fig.1, (not shown) two such systems control the cperation of valves in separate fluid pipes supplying a single pipe in which the pressure is measured, the measurement being compared with a reference in an undisclosed "process controller" which provides separate (and possibly different) error signals to each system.
Patent GB-1013600-A (GB)
Title: Nuclear reactor control rod
IPC: G21C7/113
Filed: 1964-11-11
Abstract: 1,013,600. Control rods. COMBUSTION ENGINEERING Inc. Nov. 11, 1964 [Dec. 30 1963], No. 46034/64. Heading G6C. A control rod comprises a follower blade of low neutron absorption and of different coefficient of thermal expansion to the absorbing portion of the rod; a joint is provided between the two parts which is able to accommodate the differential expansions in the joint, said joint comprising projections formed on each part so that corresponding projections and projection defining recesses interengage with sufficient clearance between them to accommodate said expansion, there being aligned openings in the projections through which a pin is passed. Stainless steel tubes 20, filled with boron, hafnium or cadmium, and attached to top and bottom headers 22, 24, also stainless steel. The follower blade 18 is of zirconium. Both adjoining edges are buttressed to fit in alignment, there being clearances 30, 34 to accommodate the differential expansion in the joint. A pin 27 and two pins 27<SP>1</SP> are welded in place to securely connect the two parts.
Patent GB-997933-A (GB)
Title: Solid ammonium phosphates
IPC: B01J19/24
Filed: 1961-06-08
Abstract: A solid non-hygroscopic ammonium phosphate useful as a fertilizer derived from anhydrous wet process phosphoric acid by neutralisation with ammonia preferably anhydrous, comprises 40-60 weight per cent of phosphorus expressed as P2O5, 15-22 weight per cent of nitrogen, a quantity of acyclic polyphosphoric acid sufficient to retain non-volatile iron and aluminium impurities in the dissolved state and has a calculated mole ratio of water to P2O5 from 2.0 to 3.5 and is free from metaphosphates. The solid ammonium phosphate may have a limited solubility rate in water and it can also contain an additional plant nutrient e.g. urea, ammonium nitrate and sulphate, superphosphate, triple superphosphate, potassium chloride and gypsum. The product is prepared by heating wet process phosphoric acid to expel water and volatile impurities until the mole ratio of water to P2O5 is 2.0 to 3.5 and then neutralizing with ammonia.  The anhydrous acid may be mixed with an additional plant nutrient as above before neutralization.  Prefer ably 4 mols. of anhydrous ammonia are added per mole of P2O5 in the anhydrous acid and neutralization is between 100-225 DEG  C.  The exact composition of the product is unknown. Specification 997,932 also is referred to.