baber/WOPTO huggingface dataset:
Patent GB-1275263-A (GB)
Title: Electrically heated gas guns
Inventor: BERLYN RONALD CORY
IPC: H05B3/48
Filed: 1968-08-22
Abstract: 1275263 Soldering JOSEPH LUCAS (INDUSTRIES) Ltd 23 July 1969 [22 Aug 1968] 40177/68 Heading B3R [Also in Division H5] A gas gun for use in soldering semi-conductors to printed circuits comprises a metal conduit 12 through which gas to be heated, e.g. a 90% N 2 -10% H 2  mixture, flows surrounded by a helical resistance heated element 18 embedded in a layer 17 of fireclay. A gas inlet 14 is provided at one end of conduit 12 and a jet 13 at the other end. The conduit 12 has a collar 15 at one end against which a spun glass sleeve 16 abuts. Fireclay is worked into the sleeve 16, the heating element 18 is wound on the fireclay layer so formed, and a further layer of fireclay is placed on top of the heater to form the embedding layer of insulation 17. A double layer 19 of asbestos cloth is wound over layer 17, and a stainless steel tube 21 and cover 22 are fitted to complete the assembly of the gas gun. An air gap 23 is left between the tube 21 and the asbestos layer 19. An asbestos tape (not shown) is wound around tube 21 after firing the fireclay. A thermocouple, not shown, is accommodated in a bore in conduit 12.
Patent GB-1156703-A (GB)
Title: Gelling of Nitric Acid
IPC: C06B47/00
Filed: 1966-09-08
Abstract: 1,156,703. Gelled nitric acid; explosive compositions. E. I. DU PONT DE NEMOURS & CO. 8 Sept., 1966 [9 Sept., 1965; 23 Oct., 1965; 30 Aug., 1966], No. 40185/66. Headings C1A and ClD. [Also in Division C3] Aqueous nitric acid is gelled by copolymerizing in situ in the nitric acid a mixture of unsaturated monomers comprising (a) up to 20%, based on the weight of the nitric acid, of a monomer of the formula CH 2  = CRX and/or a monovinyl pyridine, and (b) up to 30%, based on the weight of (a), of a monomer having at least two terminal unsaturated methylene groups. In monomer (a) X is -CN, -COOR, -CONR 2 , or COOM, M is ammonium, alkali metal, or alkaline earth metal, and R is hydrogen or lower alkyl which may be hydroxy- or cyano-substituted. Many suitable monomers are listed, examples of (a) being acrylonitrile, acrylamide, acrylic acid, methacrylic acid, 4- vinyl pyridine, and 2-methyl-o-vinyl pyridine; and of (b) N,N<SP>1</SP> - methylene - bis - acrylamide, N,N<SP>1</SP>,N<SP>11</SP> - triacrylyl - hexahydro - s - triazine, tetramethylene glycol dimethacrylate, trimethylene propane trimethacrylate, ethylene glycol dimethacrylate, divinyl benzene, allyl acrylate, N-allyl methacrylamide, diallyl ether, diallyl adipate, diallyl maleate, diallyl ether of pentaerythritol, diallylamine, N,N<SP>1</SP>-diallyl adipamide, N-allyl acrylamide, and vinyl methacrylate. The copolymer, may be formed by free radical catalysis, using as promoters ammonium or alkali metal persulphates, perborates, or pervanadates, to which may be added hydrogen peroxide, hydrazine, hydroxylamine, or carbohydrazide, and also copper, silver, ferrous, or cobaltous ions; other catalysts referred to are hydrogen peroxide with ferrous ions, cobaltic ions with or without hydrazine and persulphate ions, and organic azo compounds and peroxides, several of which are specified. Detonating explosive compositions containing the gelled nitric acid may also include the following ingredients:-nitrobenzene, nitrotoluenes, liquid and solid hydrocarbons, cellulose and starch products, sugar, silicon, ferrosilicon, sulphur, and aluminium as non-explosive fuels; RDX, nitrocellulose, smokeless powder, and TNT as explosive sensitizers; and ammonium, sodium, and potassium nitrates, ammonium and potassium sulphates and acetates, and potassium mono-hydrogen phosphate as oxidizing salts. In making the gel, nitric acid of strength 5- 99% by weight may be sparged with nitrogen to remove oxygen and oxides of nitrogen, and then mixed with the other components, the mixture being cooled if necessary; gels of varying viscosity may be produced, ranging from flowing pourable masses to rigid bodies. Apart from its use in explosives, the gel may be used for etching and other metallurgical uses, in chemical synthesis, including the manufacture of fertilizers, and for acidifying in mineralogical processes.
Patent GB-1386298-A (GB)
Title: Fluid storage device
IPC: F17B1/013
Filed: 1972-08-31
Abstract: 1386298 Gas holders V STENGELIN 31 Aug 1972 [25 April 1972] 40353/72 Heading F4X In a gas storage device comprising a plurality of flexible containers 2 arranged one above the other within a frame structure 1 having corner uprights 9, a pressure plate 3 situated on top of the containers is supported for vertical movement within the frame structure by a cable arrangement provided on at least three sides of the plate 3, the arrangement serving to ensure horizontal guidance of the plate 3 without tilting. The flexible containers 2 are made of plastics material and are interconnected at their centres. The cable arrangement comprises a number of cables 5 each extending from one corner of the plate 3 downwardly over a lower roller 7, diagonally upwardly over an upper roller 8, and then back downwardly to be finally secured to an adjacent corner of the plate 3. Spacing plates 11 located at the corners 6 of the plate 3 project outwardly towards the inside edges (12, Fig. 3) of the corner uprights 9; the plates 11 may carry rollers (not shown). The plates 11 are provided with feet 14 which project downwardly below the pressure plate and support it, in its lowermost position, outside the periphery of the containers and thereby protect these from the load of the pressure plate 3 when they are empty. The frame structure 1 is provided with a cover 15 as protection against the weather.
Patent GB-913491-A (GB)
Title: Improvements in or relating to hollow caps and to insulated electrical connectors
IPC: H01R4/20
Filed: 1959-11-27
Abstract: 913,491. Sleeve couplings. BURNDY CORPORATION. Nov. 27, 1959 [Dec. 4, 1958], No. 40397/59. Addition to 896,086. Class 38 (1). A hollow cap 24 for sealing the insulated electrical connector of the parent Specification is preferably made of a material which has an elastic memory so that after an insulated wire has been inserted through the weakened central section 30 of the cap, the material tends to tightly grip the insulation 38 of the wire. A portion 32 which is thicker than the remaining portion of the section 30 functions as a hinge when the cap is pierced. A bead 34 provides a water-repellent seal.
Patent GB-874529-A (GB)
Title: Improvements in and relating to the vulcanising of pneumatic tyres
IPC: B29D30/06
Filed: 1959-12-01
Abstract: 874,529. Vulcanizing new and retreaded tyres. HAMMESFAHR, G. Dec. 1, 1959 [Dec. 8, 1958], No. 40736/59. Class 87(2). A new or retreaded tyre is vulcanized in a mould 1a, 1b mounted on an intermittently rotating carrier 2 driven by a motor 5. Each mould passes through five heating stations comprising radiant heating envelopes 4a, 4b rotated about their axes by motors 7, two cooling stations, and a station where the finished tyre is removed and a fresh one inserted. Alternatively the moulds may rotate about their axes and the envelopes may be stationary or both may rotate in opposite directions. In a further modification, the moulds may be carried by trucks. The upper envelope 4a may be raised and lowered by cams on the mould carrier or (see Fig. 3, not shown) by a central cylinder. The upper envelope may be deeper than the lower one to allow the moulds to be removed without lifting them. The heating elements 11 may be arranged to supply more heat to the tread than to the side walls. Pressure and heating fluids may be supplied to the inside of the tyre through the spokes of the carrier. Specification 812,107 is referred to.
Patent GB-919662-A (GB)
Title: Improvements in wall supporting members for low silos
Inventor: SELLERGREN HARALD CARL VALDEMA
IPC: E04H7/28
Filed: 1961-11-15
Abstract: 919,662. Silos. BETONGBOLAGET VARBERGS BETONGVABUAKTIEBOLAG. Nov. 15, 1961, No. 40846/61. Class 20 (1). [Also in Groups I and XXV] A silo having walls of concrete slabs 1 is provided with supporting members 2 having a ground engaging flange 4 and a wall slab supporting flange 3. Slab connecting members 5 have bolts 6 engaging holes in the supporting members 2 and passing between bevelled corners of the slabs 1. Holes 8 in the web portion of the members 2 allow the passing of a spacer member to hold the supporting members during erection of the silo. A raised and ventilated floor using upper and lower slabs 16, 1a supported by blocks 12 and cross-bars 13 is provided when the silo is intended for storing grain but when intended for ensilage the slabs are placed directly on the ground except at the edge where they are supported on a bevelled surface 16.
Patent GB-1094027-A (GB)
Title: Microwave sensing apparatus and method for burner control
IPC: F23N5/24
Filed: 1966-09-13
Abstract: 1,094,027. Automatic control of air/fuel ratio. ESSO RESEARCH & ENGINEERING CO. Sept.13, 1966 [Oct.1, 1965j, No.40912/66. Heading G3R. [Also in Division F4] In a method of monitoring the fuel-air ratio of the flame of burners in an industrial furnace by directing a beam of attenuated microwaves through the flame and measuring the loss of microwave energy, microwaves in the range of 30 to 300 megacycles per second generated by a Klystron 3 are passed by connector 4 to isolator 5 and then to attenuator 7 and to a switch S1 which is timed to direct the signal for a fraction of a second to each of antennas 12, 13, 14 and then to repeat the cycle. Antennas 18, 19, 20 receive the signal through the flames 15, 16, 17, of burners A, B, C directly or via a reflector and pass it via a switch S2 synchronized with switch S1 to a detector 25 and via an amplifier 28 to an error amplifier 30 where it is matched against the command received from the attenuator via conductor 31 and to a servo device 33 linked to a visual indicator 36 containing a differential measuring circuit and a corrective signal is passed to the burner via line 37 and switch S3 which is synchronized with switch S2. The signal is transmitted to air regulators 41, 42, 43 supplying primary air to the burners and operated by electric motor valves or any other type of automatic valve to adjust the fuel-air ratio, the fuel supply rate being constant.
Patent GB-1274138-A (GB)
Title: Bale stacking agricultural trailer
Inventor: CECCO ALEARDO
IPC: A01D90/08
Filed: 1970-08-26
Abstract: 1,274,138. Bale stacking trailers; conveyers. A. CECCO. 26 Aug., 1970 [1 Sept., 1969], No. 41071/70. Headings B8A and B8E. A bale stacking trailer comprises a frame 10 on wheels 12, 14, may be hitched to a tractor by a shaft 18 and powered from the tractor power take-off through a drive shaft 20. A conventional pick-up bale loader 34 feeds bales to the entrance of a channel 36 along which they are fed by a fork 54 moved in a cyclic path by a driven crank 50 and guide 56 to form a row. When the row is completed. the leading bale thereof contacts a feeler 82 actuating mechanism to move the side 72 on pairs of parallel links 64, 74 and 66, 76 a channel width to shift the row sideways on to a floor plate 98 covering the bottom of the trailer. During this motion a plate 68 blocks the loader 34. Successive rows of bales are fed to the plate 98 and when the plate is covered by a complete layer a feeler 128, Fig. 4, is contacted by the leading row and actuates mechanism to lift the layer into a cage 136, see Fig. 1, where it is retained by the arch introduced by the shape of the plate 98. The plate 98 is then lowered to its original position. Successive layers are similarly fed into the cage 136 until it is fully loaded. The cage 136 may be swung to the side of the trailer, see Fig. 4, for unloading, on levers 152, 154 operated by hydraulic jacks 164, 166.
Patent GB-1515857-A (GB)
Title: Use of viscous liquid to provide sealing about a rotatable shaft
IPC: F16J15/40
Filed: 1975-10-08
Abstract: 1515857 Shaft seals GROUPEMENT POUR LES ACTIVITES ATOMIQUES ET AVANCEES GAAA 8 Oct 1975 [21 Oct 1974] 41327/75 Heading F2B A labyrinth seal for a rotating shaft 1 between areas of high, 4, and atmospheric, 5, pressure comprises opposite handed screwthreads 6, 7 tending to move a viscous liquid from a groove 8 towards ring seals 18 and 21, liquid reservoir 12 and 14 being respectively connected between the space 11 and the high pressure area 4 and the corresponding space adjacent the ring seal 21 and atmosphere, a non-return valve 17 balancing the second reservoir with atmosphere pressure. The valve 17 may be replaced by a porous plug and the screwthreads formed in the housing rather than the shaft. The screwthreaded housing may be flexibly mounted and provided with hydraulic wedge means for self alignment with the shaft surface.
Patent GB-1425773-A (GB)
Title: Process for the preparation of epoxy resins by interfacial  condensation
IPC: C08G59/06
Filed: 1973-09-03
Abstract: 1425773 Epoxy resins DOW CHEMICAL CO 3 Sept 1973 41388/73 Heading C3B A process for preparing solid epoxy resins by interfacial condensation comprises reacting an aromatic polyhydroxyl-containing compound with a halohydrin in the presence of an alkaline dehydrohalogenating agent, e.g. NaOH or Na 2 CO 3 , for a reaction of from 2-10 minutes and at a temperatore of from 75-160‹ C. wherein water is used as the sole reaction medium in an amount of from 3-20 p.b.w. of water per each p.b.w. of the combined weights of the reactants. Suitable polyhydroxyl compounds are resorcinol, catechol, hydroquinone; or a compound of the formula wherein A is a C 1 -C 4  alkylene or alkylidene group, -S-, -SS-, -O-, -SO-, -SO 2 - or -CO- and R and R 1  are hydrogen, chlorine or bromine; or a compound of the formula where R is hydrogen, a C 1 -C 4  alkyl group, X is hydrogen, Cl, Br or a C 1 -C 4  alkyl group and n has an average value of 0À01-0À5. Suitable halohydrin compounds are glycerine dichloro- (or dibromo-)hydrin, or an epihalohydrin. The reaction is preferably carried out while mixing with a high shear mixer. In the examples epoxy resins are prepared from p,p<SP>1</SP>-isopylidene diphenol, epichlorohydrin in the presence of sodium hydroxide and water. Uses.-Coatings.
Patent GB-926089-A (GB)
Title: Packing ring
IPC: F16L23/22
Filed: 1960-12-01
Abstract: 926,089. Joint-making packing. GOETZEWERKE FRIEDRICH GOETZE A.G. Dec. 1, 1960 [Dec. 4, 1959], No. 41404/60. Class 122 (3). A packing ring for pipe flanges comprises a metal disc 1 having concentric annular grooves on each face, the central grooves being filled with rubber or synthetic plastic cords 3 and the other grooves being filled with asbestos or other fire-resistant material cords 2. Glasswool or slagwool may be used instead of asbestos. The cords may be stuck in position and the complete packing may be coated with a graphite composition
Patent GB-1184380-A (GB)
Title: Improvements in or relating to spirally wound tubular members and method and apparatus for manufacture of the same
IPC: B01J3/04
Filed: 1967-09-11
Abstract: 1,184,380. Winding spirals. MITSUBISHI JUKOGYO K.K. 11 Sept., 1967 [27 Sept., 1966], No. 41433/67. Heading B3E. [Also in Division F2] A tubular member comprises a hollow core member on to which is wound a strip of metal, having a thickness greater than 5 mm. and a previously curved configuration of which the radius of curvature in the free state was approximately equal to the radius of the tubular member, the strip being tightly spirally wound in a plurality of superjacent layers and being closely encircled by an outer cover member. A metal strip 12 mm. thick and 1800 mm. wide is drawn from a coil (not shown) which has a radius approximately the same as the coil to be formed. The strip passes between rollers 4<SP>1</SP> and is pressed by a roller 4 against the hollow core 1 on which the coil is to be wound. The rollers 4<SP>1</SP> are adjustable and are positioned so that they bend the strip 2 to a radius of curvature slightly greater than that which it will have when on the core. Slipping of the turns on the core is prevented by friction or by tack welding the layers together when they leave the winding station. Steering of the strip to maintain the edges in alignment is effected by the roller 4 which is mounted so that the pressure exerted by the roller can be varied along its length. The leading end 2a of the strip is tapered so that there is no gap between the first and second turns and the trailing end 2b is similarly tapered so that it closely conforms to the inside surface of the outer ring 5. This ring is made in halves which are welded together. After fabrication, holes 7 are formed through the outer ring and the wound layers to receive thermometers which indicate the temperature of the interior during heat treatment. Inert gas circulates between the coils during the heat treatment. The holes 7 are subsequently plugged. Two or more sections are joined end-to-end by automatic welding to form a chemical treatment vessel, or a closure plate is welded to the ends.
Patent GB-989146-A (GB)
Title: Improvements in or relating to induction furnaces
IPC: C21D1/42
Filed: 1963-10-22
Abstract: 989,146. Induction furnaces. BROWN, BOVERI & CO. Ltd. Oct. 22, 1963 [Oct. 24, 1962], No. 41594/63. Heading H5H. An induction furnace for heating rod or disc sections 2 has an inclined induction coil 4 and a closure plate 6. The sections are urged upwards on rails 3 by a plunger 7, and as each section reaches the top the closure plate 6 slides to permit ejection through an aperture; the plate carries a support 13 positioned so that upon reclosure the section is lowered to the top of a conveyer shoot. A limit switch 15 initiates reclosure and also reversal of the plunger 7. The sections 2 remaining in the furnace move down a little until they operate a switch controlling a holding device 8; the plunger continues until a transfer machine can insert a new section and trigger upward movement of the plunger. The angle of the furnace may be adjustable and is set to ensure adequate contact between sections but without risk of them sticking together.
Patent GB-1409803-A (GB)
Title: Chamber pot
IPC: A47K11/06
Filed: 1972-09-08
Abstract: 1409803 Chamber pots NURSERY PIED PIPER CO Ltd 30 July 1973 [8 Sept 1972 5 Dec 1972] 41823/72 and 56019/72 Heading A4N A chamber pot for use in training infants, comprises means for detecting the presence of moisture derived from urine, or excreta, in the bottom of the pot and means incorporated in the pot and responsive to such presence to produce a musical sound. A pair of exposed stainless steel contacts 4 in the bottom of the pot, flush with its surface, are arranged to be connected together to complete the circuit to the sound producing means by conductive liquid etc in the bottom of the pot. The circuit includes a switch 15, a battery (18) and a P.N.P. transistor (19) acting as a switch for a motor 13, which motor activates a musical box 12, and is enclosed in two hollow zones, the music chamber 5 and the battery chamber (7), Fig. 2, (not shown). The on/off switch 15 may be accessibly placed at the rear, or an automatic switch may be operated by the weight of a child upon the pot, an actuator 16 then projecting below the lower edge of the pot wall. Switch 15, in series with the battery, renders the circuit inoperative until it is closed by a child sitting on the pot. When urine completes the circuit between the contact studs 4, the transistor is turned on and the current operates motor 13 such that the musical box plays a tune. Alternatively a spring motor may be employed. The detection of urine may be performed by means of two electrodes of dissimilar metals between which a potential difference will arise in its presence, the potential difference being used as a triggering voltage e.g. to tu@ on a field effect transistor controlling a sound producing device, or to operate a moving coil relay which controls a clockwork mechanism, eliminating the battery, or to drive the musical device itself, again eliminating the need for a battery. A timer may be provided for stopping the music after e.g. a few minutes even if the child remains on the pot.
Patent GB-1236568-A (GB)
Title: Intrinsically safe electrical power supply for use in inflammable atmospheres
Inventor: THOMAS VAUGHAN MILES
IPC: H02H3/04
Filed: 1967-09-15
Abstract: 1,236,568. Voltage protection circuits. COAL INDUSTRY (PATENTS) Ltd. 13 Dec., 1968 [15 Sept., 1967], No. 42122/67. Heading H2H. [Also in Division G3] An A.C. power supply system comprises a current-limiting transformer across the output of which is connected a shunt circuit consisting of two oppositely-poled series-connected rectifiers which provide a low-impedance shunt if the output voltage exceeds a predetermined level. In the circuit of Fig. 1, two shunt circuits are provided, each being formed of a pair of Zener diodes 3, 6 and 4, 5 respectively. When the output voltage from the transformer 2 is low, these shunts will pass no current, but at higher voltages the diodes will break down and the resultant output will be a clipped A.C. waveform. Between the midpoints of the diode pairs, there is connected a relay coil 7 which is normally energized through the action of the Zener diodes as a rectifier bridge. If one of the diodes is faulty, the coil will be de-energized on alternate half-cycles and is arranged to operate a switch 10 and disconnect the output terminals. Similarly, an excessive voltage across the coil 7 also results in the operation of the switch 10. Indicator lamps 9A, 9B are provided and may be tested using a normally closed contact 11. The transformer 2 is of a constant-voltage type and has a saturable core (Fig. 2, not shown).
Patent GB-946505-A (GB)
Title: Rotary speed responsive mechanism
Inventor: TYLER STANLEY RALPH
IPC: G01P15/03
Filed: 1961-11-27
Abstract: 946,505. Fluid-pressure servomotor control systems. DOWTY FUEL SYSTEMS Ltd. Nov. 26, 1962 [Nov. 27, 1961], No. 42334/61. Heading G3P. Speed and acceleration responsive means for a rotary shaft 1 comprises a flyweight 3 pivotally mounted on the shaft about an axis 7 parallel to the shaft axis and having its centre of gravity displaced from the shaft axis, due e.g. to the provision of a hole 8, so that the force exerted by the flyweight on a spring 14 tends to vary in response to both speed and acceleration. A lug 9 rigid with the shaft forms an abutment for the spring 14 and carries a nozzle 12 which coacts with a half-ball valve 13 on the flyweight and connects through a restriction 25 with a source of fluid pressure. Also bearing on the flyweight, in opposition to the spring, is a diaphragm 16 subject to the pressure before the nozzle, the arrangement being such that the pressure before the nozzle is related to speed and acceleration (or deceleration). This pressure may be communicated by a conduit 26 to means such as a spring- loaded piston which may control the supply of fuel to a gas turbine engine to which the shaft 1 is geared.