baber/WOPTO huggingface dataset:
Patent GB-769929-A (GB)
Title: Improvements in and relating to heat exchangers
Inventor: PORTER THOMAS
IPC: F28F1/22
Filed: 1954-12-14
Abstract: 769,929. Making heat exchangers. PORTER & CO. (SALFORD), Ltd., T. May 4, 1955 [Dec. 14, 1954], No. 36110/54. Classes 83 (2) and 83 (4). [Also in Group XIII] A heat exchanger comprises a tube 6 enclosed between two aluminium or aluminium alloy plates 1, 10 at least one of which is grooved to accommodate the tube with a close fit, the plates being secured together face to face by a cement or adhesive 8. Preferably the tube 6 is also made of aluminium or aluminium alloy, and may alternatively be of " D " cross-section Fig. 3 (not shown), formed by extrusion. Alternatively, both plates 1 and 10 may be grooved whereby each groove embraces substantially half of the tube circumference. In the manufacture of an evaporator unit for a domestic or like refrigerator, Fig. 4, an aluminium plate 1 has a pattern of grooves 2, 3, 4 pressed therein. A tube assembly 5, 6, 7 is then formed to correspond to the grooves, the large tube 5 being subsequently adapted to form a header. The preformed tube assembly is laid into the corresponding groove and is pressed therein so as to lie wholly below the surface of the grooved plate 1. An acid-resisting cement is then applied to the surface of the grooved plate, also filling the crevices 9, Fig. 1, around the tubes and/or is applied to the surface of a second ungrooved plate 10 and the two plates are then secured together, if necessary under pressure and heat, until the cement has set. The combined unit is then bent into channel shape to form the evaporator unit, Fig. 5. One or both of the plates 1, 10 may be flanged to facilitate attachment of the unit to the refrigerator. The heat exchanger may alternatively be used for heating purposes in which case the assembly of Fig. 4 may be left flat, whereby it may be built into walls and ceilings as space heating panels, or the panels may be shaped to harmonize with or fit into any surrounding structure. The unit may also be used as a heating shelf, Fig. 8 (not shown). An assembly of heat exchanger plates each formed according to the invention, Fig. 7 (not shown), may be used. In another embodiment, Fig. 9, tubes 14, 15 may be disposed on opposite sides of a central plate 13, the outer plates 16, 17 being grooved to receive the tubes. When this arrangement is used in a refrigerator, one tube may be in a refrigerant circuit and the other in a de-frosting circuit. The cement used may be that known under the Registered Trade Mark " Redux."
Patent GB-1127816-A (GB)
Title: Improvements in and relating to electric switches
IPC: H03K17/95
Filed: 1966-08-12
Abstract: 1,127,816. Proximity detectors. TATEISI ELECTRONICS CO. Aug. 12, 1966 [Aug. 18, 1965], No.36240/66. Heading G1N. A proximity detector or limit switch comprises an output coil or coils 30, 32, Fig. 1, of a Colpitts oscillator including transistor 28, and electromagnetically coupled respectively to differentially connected secondary coils 34, 36. A metallic piece 46 is arranged to be selectively placed either in the field of coils 30, 34 or removed therefrom according to whether it is desired to produce a difference voltage across coils 34, 36 either in the presence of or in the absence of a metal object 48 in the field of coils 32, 36. The difference voltage is zero when metallic piece 46 and metal object 48 are both present or both absent. In the limit switch illustrated in Figs. 2, 3, 4 (not shown) the metal object (64) is movable into and out of the field of a pair of coils by a pivoted arm. In Fig. 1, in the absence of a difference voltage, amplifier transistor 38 does not conduct. As a result a direct voltage from a supply rectifier 19 applied to a Zener diode 40 exceeds the Zener voltage and current flows through R42, thereby causing a switching transistor 26 to conduct. The transistor 26 is connected in series with the control electrode of a bi-lateral controlled rectifier switch element 14, between the output terminals of a rectifier 20, so that element 14 is rendered conducting and a voltage is applied to a load 12. When a differential voltage is produced the voltage at Zener diode 40 is reduced below the Zener voltage and transistor switch 26 and element 14 are cut-off and no current flows in load 12.
Patent GB-729910-A (GB)
Title: Improvements relating to flexible tubing
IPC: B29D23/18
Filed: 1953-12-31
Abstract: 729,910. Flexible hoses. HOOVER, Ltd. Dec. 31, 1953 [Jan. 21, 1953], No. 36391/53. Class 99 (2). A hollow elastomer cord 12, which may be oval in cross-section but which preferably is initially circular in crosssection, is disposed in the spaces between adjacent convolutions of a helical winding 10 of metal spring wire surrounded by at least one tubular layer of flexible elastomer 11. The cord 12 is wound under tension so that the layer 11 is pressed into the spaces and assumes a wavelike longitudinal section, and may be bonded to the layer 11. The winding 10 may be preformed and placed on a mandrel such that the convolutions of the winding are uniformly spaced and under axial and circumferential stress, an extruded tube of polyvinyl chloride being expanded by air pressure and assembled over the winding. During winding of the cord 12 which may be of extruded polyvinyl chloride, a solvent may be applied to the surface of the tube 11 ahead of the point of application of the cord 12 to bond the tube and cord, and the completed hose may afterwards be heat cured. Specifications 648,562 and 673,043 are referred to.
Patent GB-1300313-A (GB)
Title: Improved chlorinated trisodium phosphates
IPC: C01B25/455
Filed: 1970-07-28
Abstract: 1300313 Chlorinated trisodium phosphates STAUFFER CHEMICAL CO 28 July 1970 [5 Sept 1969] 36392/70 Heading D1P Chlorinated trisodium phosphate is made by admixing sodium orthophosphate and sodium hypochlorite at an elevated temperature i.e. one above which the product begins to crystallise from the reaction mixture in the presence of an effective amount i.e. an amount to obtain a substantial increase in the available chlorine content of the product, of a water soluble alkali metal silicate, cooling the resultant mixture and recovering a crystallised mixture comprising chlorinated trisodium phosphate. Suitable silicates include sodium and potassium salts of silicates, orthosilicates, metasilicates and alkaline liquid silicate mixtures. Preferably the alkali metal silicate is added to the phosphate before the nypochlorite.
Patent GB-414957-A (GB)
Title: Improvements relating to wave-producing apparatus
IPC: E04H4/00
Filed: 1933-12-27
Abstract: 414,957. Wave-producing apparatus. BAMAG-MEGUIN AKT.-GES., 10, Reuchlinstrasse, Berlin. Dec. 27, 1933, No. 36402. Convention date, Dec. 30, 1932. [Class 26.] A wave-producing member 24 particularly for bathing pools, is driven by a liquid-pressure engine comprising a vessel 7 containing liquids under pressure and communicating with at least one working cylinder 13 fitted with control valves 15, 21 and delivering to a reservoir 4. The vessel is fed from the reservoir by a pump 3 and supplies the cylinder through pipes 10, 11, 12. The cylinder contains a differential piston 22, which operates the supply and discharge valves 15, 21 through trip means 27, 28, 29 controlling electromagnets 14, 20. The return stroke is effected by means of a one-way valve 16 which is adjustably byepassed at 17. An air-pipe 9 fitted with a float-operated valve 8 ensures the maintainance of an adequate air-cushion within the vessel 7.
Patent GB-1517026-A (GB)
Title: Immune globulins and process for their preparation
IPC: C07K1/113
Filed: 1975-09-04
Abstract: Amidated immunoglobulins suitable for intravenous administration are prepared by reacting immunoglobulins with a molar excess of a primary monoamine and a carbodiimide or its salt in weakly acidic to neutral aqueous solution. As a result of the amidation, the undesired complement binding by the immunoglobulins is prevented or at least substantially decreased without the antibody action of the immunoglobulins being impaired. The process can be applied to reduced immunoglobulins, in which at least one disulphide bond has been converted to two sulphydryl bonds.
Patent GB-1355913-A (GB)
Title: Process for the production of discontinuous fibrils
IPC: D01D5/11
Filed: 1972-08-04
Abstract: 1355913 Plexifilaments SOLVAY & CIE 4 Aug 1972 [6 Aug 1971] 36574/72 Heading B5B In a process for the production of discontinuous fibrils (as defined), a two-phase liquid mixture of a molten polymer and a solvent is subjected to a pressure and temperature such that, when the pressure is suddenly released, the solvent instantaneously and completely vaporizes and the polymer solidifies into a continuous fibrillar structure. This structure is shredded, at the moment of its formation, by a transverse stream of an inert (as herein defined) fluid. The fluid may be a gas, such as nitrogen, or a liquid, such as water or an organic solvent. Fig. 3 illustrates a form of apparatus suitable for carrying out the process. The polymer solvent mixture, at the selected temperature and pressure, is passed down tube 10 to orifice 11, where the pressure suddenly drops and the continuous fibrillar structure is formed. The orifice is opposite, but set back from, a constriction in tube 12 along which passes the stream of fluid. Examples illustrate the formation of fibrils from polyethylene, alone and in admixture with polypropylene, and polypropylene on its own.
Patent GB-1477166-A (GB)
Title: Combustion apparatus
IPC: F16L39/04
Filed: 1974-08-21
Abstract: 1477166 Burners KGM TOZELESTECHNIKAI KUTATOINTEZET 21 Aug 1974 [4 Sept 1973] 36737/74 Heading F4T The shape of the flame from a gas burner may be varied by tilting the axes of nozzles 5 towards or away from each other. In the preferred embodiment, six nozzles are connected by pivoted links 6 to a screwed spindle 9 which may be displaced by rotation of a nut 10. The nozzles are supplied from a distribution chamber 2 through hoses 4 of chrome-nickel alloy. Threaded connections 12 facilitate replacement of the hoses.
Patent GB-1485420-A (GB)
Title: Vehicular transportation system
IPC: B61L23/14
Filed: 1974-08-22
Abstract: 1485420 Vehicle control GENERAL SIGNAL CORP 22 Aug 1974 [1 Oct 1973] 36987/74 Heading B7N In a guided vehicle transport system, e.g. a rail system in which a pair of signalling conductors extend along the route and are coupled to the vehicles by brushes, e.g. brushes 5-8 to vehicle 20, one of the conductors is sectionalized to divide the route into block sections and each section 1, 4 is supplied with a vehicle presence detector signal and with means for transmitting control signals to a vehicle in the section and for transmitting further communication signals between wayside and vehicle and vice versa. Vehicle presence is detected in, e.g. section 1 by a relay 33 which is normally picked up by a D.C. signal supplied to the sectionalized conductor. On entry of a vehicle brushes 5 and 6 shunt sufficient of the signal to ground conductor 10 for the relay to drop away and indicate vehicle presence. Enough signal however remains to actuate relay 25 on the vehicle to indicate that a vehicle detection signal is present on the conductors.  Automatic vehicle protection (AVP) code generator 101 supplies five speed control signals to block section switching network 102, which depending on the occupancy of the block sections in advance, selects a signal to apply via transformers 11, 12 to the block conductor pair and hence when a vehicle is present to the AVP receiver 22 for vehicle speed control. In addition further communication apparatus including WVC (wayside to vehicle) encoder, transmitters and receivers at the wayside and a VWC (vehicle to wayside) transmitter and receiver on each vehicle are provided for supervisory control, the WVC signals being, e.g. special speed control signals or requests to the vehicle for information and the VWC signals being information relating to route, speed, fault conditions &c. The various AVP, WVC and VWC signals are at different frequencies.
Patent GB-887635-A (GB)
Title: Multiwall containers
IPC: B29C49/24
Filed: 1960-10-28
Abstract: 887,635. Blow moulding reinforced hollow articles. WILSON, J. M. (Plax Corporation) Oct. 28, 1960, No. 37066/60. Class 87(2). [Also in Group XVII] Apparatus for manufacturing reinforced hollow articles e.g. bottles, comprises a multisection blow mould 14, transfer and gripping means for a reinforcement member 2, this member being introduced into the mould, when open, from a supply of such members, and means for introducing a hollow plastic preform within said member, closing the mould and blowing the preform into engagement with the member 2 and mould 14. Cylinders 2 e.g. of cardboard or metal, are fed along a conveyer 4 until they reach a solenoid-actuated stop 11. The stop 11 is retracted only when an arm 6 is in its retracted position, and then one reinforcement member is allowed to pass to a stop 12 where it is gripped by a member 5 by means of a vacuum applied at 10. The arm 6 is then advanced to the position 3 with the mould 14 open. A tube of thermoplastic material 15, Fig. 2, is extruded from a nozzle 16 into the member 2 until it reaches the bottom of the mould cavity. Then the mould is closed sealing the lower end of the tube 15 and the bottle is blown. The nozzle 16 is raised from the mould 14 and the tube severed by a knife 24. Adhesive may be applied to the inside of member 2 before blowing. The member 2 may be provided with a level indicating slot (not shown). After blowing, the closed mould 14 may be moved to a cooling station at which a blowhead (not shown) may be employed to maintain the pressure inside the bottle while it is cooling. A series of moulds 14 may be mounted on a rotary table (not shown).
Patent GB-1443100-A (GB)
Title: Process of the production of copper
IPC: C22B5/00
Filed: 1974-08-23
Abstract: 1443100 Production of copper BOLIDEN AB 23 Aug 1974 37205/74 Heading C7D In a process for the production of Cu from raw material containing Cu, S, Zn and >0À2% Ni (based on the Cu content), the material is smelted to matte, which is converted to Cu, the slag from the smelting stage passing to a fuming furnace where Zn is distilled off, and the liquid slag from the conversion stage being withdrawn at the "white metal" (Cu2S) stage and passed to a furnace where it is agitated with a sulphide of Cu, Fe or Ni, the treated slag passing to the fuming furnace and the Cu and Ni separated being returned to the matte. The preferred sulphide is copper pyrites and the process preferably occurs in a rotary furnace, eg a Kaldo-type furnace. The matte formed by the reaction of the slag from the conversion stage and the sulphide material is blown with O 2-  containing gas to form Cu and NiO slag, or a Cu-Ni alloy.
Patent GB-1267683-A (GB)
Title: Treatment of ammonium sulphate liquor
Inventor: BRUNDRIT DENIS
IPC: C01C1/16
Filed: 1969-07-24
Abstract: 1,267,683. Ammonium halide; hydrogen halide; potassium sulphate. IMPERIAL CHEMICAL INDUSTRIES Ltd. 3 July, 1970 [24 July, 1969], No. 37280/69. Heading C1A. Ammonium halide is formed by heating a sulphuric acid liquor comprising ammonium sulphate which may include ammonium hydrogen sulphate with an alkali metal halide to a temperature greater than 150‹ C. Alkali metal sulphate and hydrogen halide are also formed. The alkali metal halide may be sodium or potassium chloride. The ammonium halide may be removed by volatization and dissolved in an aqueous solution of the corresponding hydrogen halide. The sulphuric acid liquor comprising ammonium sulphate may be obtained as an effluent in a manufacturing process, e.g. in the manufacture of methyl methacrylate, acrylonitrile and caprolactam.
Patent GB-1263792-A (GB)
Title: Flame retardant compositions for application to fabric
IPC: D06M11/47
Filed: 1969-07-24
Abstract: 1,263,792. Vinylidene chloride polymer composition. ASSOCIATED LEAD MFG. Ltd., and A. G. WALKER. 9 June, 1970 [24 July, 1969], No. 37340/69. Heading C3P. [Also in Division D1] A flame-retardant composition for textile fabric or yarn comprises an aqueous dispersion of a vinylidene chloride polymer or copolymer or mixture thereof with another resin, but containing at least 50% by wt. of vinylidene chloride, 5-30% based on the weight of the dispersion of antimony oxide, 5-20% of a citric or sebacic ester plasticizer, an emulsifying agent and an emulsifying stabilizer. Exemplified compositions contain vinylidene chloride/ acrylate (70/30) copolymer, antimony oxide, dibutyl sebacate or tributyl citrate, alkylated phenol-polyalkyl ether or polyoxyethylene sorbitan mono-oleate and sorbitan mono-oleate and sodium carboxymethyl cellulose which are applied to cotton fabric.
Patent GB-1488544-A (GB)
Title: Blood-vessel occluding instrument
IPC: A61B17/12
Filed: 1975-09-12
Abstract: 1488544 Blood-vessel occluding devices T J FOGARTY 12 Sept 1975 [21 April 1975] 37581/75 Heading A5R An instrument for the occlusion and/or manipulation of blood vessels comprises an elongate rigid body member 112, a resilient pad 136 secured to the bottom surface of the body member, and a length of resilient tape 144 secured to and depending from adjacent one end 122 of the body member and means at the other end 124 of the body member for receiving and releasably holding the length of tape in a selected adjustable position adjacent the resilient pad. The tape may be secured to the body member either by passing the tape through a passageway 128 in the body member and pressing the (preferably plastics) body member inwards at points 150 to grip the tape or by knotting the tape after passage through the passageway and passing the upper free end of the tape back through the passageway and out through a second passageway perpendicular to the first-mentioned passageway. The tape 144 is fitted with a needle 148 for enabling positioning of the tape under a blood vessel, and is received in a slot 132 at the other end of the body member. The tape is preferably soft-white rubber tubing.
Patent GB-1392942-A (GB)
Title: Process for the production of citric acid by submerged fermentation
IPC: C12R1/685
Filed: 1972-08-15
Abstract: 1392942 Citric acid JUNGBUNZLAUER SPIRITUSUND CHEMISCHE FABRIK AG 15 Aug 1972 [18 Aug 1971] 37994/72 Heading C2C Citric acid is prepared by the submerged fermentation of at least one carbohydrate by Aspergillus niger in which sodium hydroxide is added to the fermentation medium 24-36 hours after the inoculation of the medium with the fungus. The carbohydrate may be a decationized sugar solution, and nutrient salts and potassium ferrocyanides may be added. A pH of 1À5 to 2À0 may be maintained by the addition of the sodium hydroxide.
Patent GB-1141848-A (GB)
Title: Method for the extrusion of plastic material
Inventor: TIGNER REUBEN ALFRED
IPC: B29C48/475
Filed: 1966-08-24
Abstract: 1,141,848. Pulse-generator extruders; films and filaments. DOW CHEMICAL CO. 24 Aug., 1966, No. 38014/66. Headings B5A and B5B. Thermosetting or thermoplastic resin in a viscous, but flowable condition, is extruded through one or more orifices 17 in a die plate 16 by reciprocation of a piston 26 through a distance of 0À005-0À100 inch at a frequency of at least one reciprocation or pulse per second. The frequency is generally 1-1000 pulses per second, a preferred range being 30-150 per second and, as shown, are generated by a cam 31 acting on the upstream end of piston 26 against the bias of a spring 27. Alternatively, piston 26 may be reciprocated by pneumatic, hydraulic, electric or electromagnetic means including the use of magnetostrictive, electrostrictive and electromagnetic transducers and piezoelectric crystals. Preferably the smallest distance between die plate 16 and the parallel flat face of piston 26 is of the same order as the amplitude of the pulse and preferably also the waveform of the pulse is non-symmetrical. It is stated that the device may form the injector of an injection moulding machine. In examples, the making of filaments from α-methyl styrene or carboxy vinyl polymer is described, the diameter of orifice 17 being in the range 0À04-0À1 inch. Also described is the production of cellulose fibres using a magnetostrictive device generating pulses at a rate of about 40,000 p.s. Sheet material is produced by extruding a # inch strand on to a conveyer belt and subjecting the strand to the action of a pressure-pulse generating tool. Typically obtained was a polyethylene sheet 1À5 x 0À015 inch using a 60 c.p.s. generating tool and a vinylidene chloride sheet 1À0 x 0À005 inch using a generating tool frequency of 30 c.p.s. Other resins specifically mentioned are polystyrene, polypropylene, vinyl polymers, styrol resins, urea formaldehyde resins, phenolaldehyde resins, superpolyamide, acrylate polymers and nylon.
Patent GB-1112386-A (GB)
Title: Improvements in or relating to nuclear reactor fuel elements
Inventor: EYRE PHILIP BERNARD
IPC: G21C3/36
Filed: 1964-09-21
Abstract: 1,112,386. Fuel elements. UNITED KING- DOM ATOMIC ENERGY AUTHORITY. 17 Aug., 1965 [21 Sept., 1964], No. 38486/64. Heading G6C. A plate-type fuel element, as shown in Fig. 2, is made by attaching spacing members in the form of wires 5 longitudinally to one face of each of a number of fuel plates 1 and stacking these plates one upon another between parallel transverse side-plates 2, applying brazing material to the longitudinal edges of the fuel plates 1 where they contact the side-plates 2, clamping the assembly of fuel plates 1 and sideplates 2 together, and brazing the fuel plates 1 to the side-plates 2 by heating the assembly to a suitable brazing temperature. In one embodiment, the fuel plates 1 are of a cermet 3 of 30 vol. per cent UO 2  in 70 vol. per cent stainless steel with a cladding 4 of stainless steel, and the side-plates 2 are also of stainless steel. Prior to assembly of the fuel element, the longitudinal edges of the fuel plates 1 are cut off and, in addition, holes 10 for coolant transfer are provided in the plates. Grooves 8 are cut in the exposed cermet 3 along the longitudinal edges of the plates and grooves 13 around the interiors of the holes 10, the latter being sheathed by stainless steel liner tubes 11 sealed by brazing. Alternatively (Fig. 5, not shown), the region surrounding each hole is reduced in thickness by coining and the holes are then fitted with flanged liner tubes. The liner tubes are of smaller diameter than the holes so that a closed annular space is formed between the wall of each hole and the corresponding liner tube. After brazing, the assembly is immersed in helium at 100 p.s.i. If any faults exist in the brazing, helium penetrates such faults and enters the grooves 8 or 13. The assembly is now placed in a vacuum vessel which is evacuated and connected with a mass spectrometer. Detection of helium is a general indication of faulty brazing.
Patent GB-338772-A (GB)
Title: Improved construction of float for fishing nets
IPC: A01K75/04
Filed: 1929-12-18
Abstract: 338,772. Bell, F. J., and Boyle, R. Dec. 18, 1929. Net floats.-An incorrodible metal fishing net float is formed with a depression B which is bridged by a bar C.