baber/WOPTO huggingface dataset:
Patent GB-732076-A (GB)
Title: Improvements in or relating to electromagnetic waveguide systems
IPC: H01P5/20
Filed: 1952-11-04
Abstract: 732,076. Wave-guides. GENERAL ELECTRIC CO., Ltd., AYERS, J. L., and WALSH, A. S. Oct. 21, 1953 [Nov. 4, 1952], No. 27786/52. Class 40 (8). A hybrid wave-guide junction comprises a first rectangular guide 1 which divides symmetrically into two E-plane branches 2, 3 which are inclined to each other at an angle of not greater than 90 degrees, the fourth (H- plane) branch 4 being of a modified crosssection Fig. 1a, obtained by cutting-off two of the corners by two additional sides 6, 7. A guide of such section or one of triangular crosssection is capable of supporting a slightly modified TE 01  mode as is indicated by the electric vectors in Fig. la. The junction is such that power from the branch 1 is divided equally between branches 2 and 3 whilst no power is coupled into the branch 4. Conversely, power from the branch 4 is coupled into arms 2 and 3 and not into arm 1. The branch 4 is arranged so that its complete side 5 lies tangential to or near to the rounded apex 16 between the inclined guide 2, 3. At a point near the junction the branch 4 is transformed to a normal rectangular cross-section by means of sloping ramps 23 which taper from the ends of the sides 6, 7 to an apex 24. Since the branches 2, 3 are connected to guides having smaller dimensions than the guide 1 it is necessary to taper the longer dimension of these branches from points 14 just beyond the junction to their ends. At the point where the outer longer dimension walls of branches 2 and 3 start to diverge, the right-hand halves, Fig. 2a, of those walls are curved circularly. Owing to the fact that the additional sides 6, 7 of the branch 4 are straight it is necessary to form in these walls facets 26 which are curved at a point half-way across the walls and converge to the corners 27 of the branch 4. In an alternative arrangement the sides 6, 7 of the branch 4 are curved. A septum 17 projecting from the apex 16 and an inductive iris 25 in the branch 1 are arranged to minimize mismatch for power arriving along the branches 4 and 1 respectively. The matching may also be improved by including a post projecting from the side 9 at the junction or by allowing a small part of the apex 16 to project beyond the side 9. The junction may form part of a balanced duplexer in which the branches 2, 3 are joined by lengths of wave-guide to the corresponding branches of a similar junction, T.R. cells being arranged in these lengths at distances from the first junction which differ by #/4. The second junction, to which a receiver is coupled, may have a smaller power-handling capacity than the first junction, e.g. it may be made from guides of smaller dimensions.
Patent GB-1454903-A (GB)
Title: Dart flights
IPC: F42B6/06
Filed: 1973-07-30
Abstract: 1454903 Dart flights P COXON 22 July 1974 [30 July 1973] 27789/73 Heading A6S A dart flight comprises a shaft 10 from which radially extend a number of vanes 12a, 12b, the shaft 10 comprising first and second shaft parts 10a, 10b, each shaft part carrying at least one vane, the first shaft part 10a having longitudinally extending open-ended slot 13 (Fig. 3) and the second part 10b having a formation e.g. a web, for locating in the slot 13. Relative transverse movement of the two parts is prevented e.g. by a central ridge portion 14. Adjacent the open end of the slot 13 is disposed a spigot portion 17 whereby the flight may be secured to a dart body e.g. by a screw fit or an interference fit, either directly or via an intermediate member. Each vane may comprise a number of barbs 11 attached at one end to the shaft. The barbs 11 may have a cross section and arrangement as shown in Fig. 4, and they may be connected together by a web. The flight may be moulded from plastics, e.g. polyethylene, polyproylene, ABS or nylon.
Patent GB-464107-A (GB)
Title: Improvements in and relating to the manufacture of artificial textile fibres
IPC: D01F1/10
Filed: 1935-10-10
Abstract: In a process for the manufacture of artificial staple fibres by extruding spinning solution into precipitant and cutting the filaments into short pieces, the spinning solution contains insoluble solid substances, the particle size of which relative to the denier of the filaments is considerably larger than the size of pigments normally incorporated in filaments of the same denier, and is such as to impart relatively large protuberances and lumps to the surface of the filaments.  For usual individual titres of filaments, the particle size varies from about 4 up to 8 or 10 microns.  Thus, for an individual titre of 3 deniers particles of about 6 microns diameter are used, for 4 deniers about 7 microns, for 5 deniers about 8 microns, for 7 deniers about 9 microns, and for 10 deniers about 11 microns.  The formula D \sS ?T=K, where D is the particle diameter in microns, T the titre of a single fibre in deniers and K a number between about 3 and 6, gives the most suitable conditions.  The amount of particle added may be within \ba1/2\be--10 per cent. Sometimes larger orifices than usual should be employed to avoid choking.  To a viscose solution containing 6 per cent cellulose and 5 per cent alkali, 5 per cent (based on the weight of the cellulose) of infusorial earth is added.  The particles in a considerable percentage have a size up to 8 microns.  The viscose is then well stirred and filtered through special filters which do not retain coarser particles up to the mentioned size, and spun to threads with an individual titre of 4 deniers.  The infusorial earth which in the raw state has particles of up to 30 microns is ground and brought to suitable dimensions by washing, sifting and similar operations. In a second example, fibres of 10 deniers are obtained from viscose containing 8--9 per cent cellulose, 7 per cent alkali, and 7 per cent of infusorial earth or ground porcelain powder with a particle size of about 11 microns.  In a third example, 2 per cent of infusorial earth (particle size about 5 microns for individual fibres with a titre of 3 deniers) based on the weight of acetyl cellulose is added to a 20 per cent solution of acetyl cellulose in a suitable organic solvent.
Patent GB-683029-A (GB)
Title: Multiple coil tubular electric heating element
IPC: H05B3/76
Filed: 1949-11-02
Abstract: 683,029. Tubular electric resistance heaters. BACKER, C. B. Nov. 2, 1949 [Nov. 18, 1948], No. 28071/49. Class 39(iii) A tubular heating element e.g. for hotplates, room heaters or immersion heaters comprises a closed tube 39 with its ends adjacent containing two separate heating coils 6, 7, one coil 6 having a section extending from one end of tube to an intermediate point 9 where it is bent back to have a return section to the same end 18 of the tube, while the other coil 7 has a section extending from the other end 18<SP>1</SP> of the tube to a point 11 adjacent the point 9, where it is bent back to have a section returning to said end 18<SP>1</SP>, so that the coils 6, 7 may be separately energized to heat different parts of the tube. The coils are embedded in solid insulation in the tube, and the return section of each coil may be stretched out uncoiled to liberate less heat. A third coil 19 of low load e.g. for simmering may run the full length of the tube with a terminal 20 at each end and may be stretched out in one part. The sections of the coil lie alongside one another and may be stretched out near the ends of the tube, which may be longitudinally indented so as to follow the contour of the coils through more than 60 per cent of the circumference of each coil. The coils may be arranged to give a hot centre in a hotplate. The tube may contain four coils. In Fig. 8 one coil 25 has two return sections 26, 27 and the tube contains a low temperature coil 28. The tube is preferably convolute, with its adjacent ends at the edge or in the centre of the hot-plate. The adjacent return bends of the coils may lie at an outer edge of the hot plate, which may comprise a coiled narrow tube in which the coils lie in a vertical plane, the vessel to be heated resting on the edge of the tube. The ends of the tube carry pin terminals. When the adjacent ends of a tubular hot-plate are arranged centrally, the outer part of the tube is bent down and radially inwards at 48 and has a part 49 bent up at the centre and then down to carry a plug terminal 41. The coils may be connected separately, in series or in parallel. The Specification as open to inspection under Sect. 91, comprises also a heating tube with three heating coils extending from end to end of the tube with terminals at opposite ends, two coils being stretched out at opposite ends to give major heating at different parts of the tube, the third coil heating the tube uniformly. This subject-matter does not appear in the Specification as accepted.
Patent GB-969102-A (GB)
Title: Improvements in or relating to a device for controlling a monitoring relay
IPC: B61L1/02
Filed: 1962-07-23
Abstract: 969,102. Vehicle passage detectors. PHILIPS ELECTRICAL INDUSTRIES Ltd. (Philips Gloeilampenfabrieken N.V.). July 23, 1962, No. 28241/62. Heading B7N. A vehicle passage detector for a railway signalling system comprises an oscillator B which normally supplies a signal via AND gate P 1 , OR gate P 2  and amplifier rectifier C to energize relay R and means T for supplying a second input to the AND gate from the output of amplifier-rectifier C. When a vehicle passing along rails A, A 2  momentarily interrupts the signal, relay R releases and due to the removal of the second input to the AND gate is prevented from re-energizing when the signal is restored. On releasing, contact r 2  of the relay energizes circuit D which after a delay supplies a signal via OR gate P 2  and amplifier C to reenergize the relay and supply a second input to the AND gate. On pick-up of the relay the circuit returns to normal having interrupted a signalling circuit at contact r 1  of the relay for a fixed time irrespective of the speed of passage of the train.
Patent GB-362552-A (GB)
Title: An absorbent for gas-filters particularly for breathing purposes
IPC: A62D7/00
Filed: 1930-09-22
Abstract: An absorbent for gas filters, particularly for breathing purposes, and especially for use against hydrogen sulphide and ammonia, consists of cuprous chloride placed on a solid carrier which may itself be adsorptive such as active charcoal or an activated inorganic gel.  The efficiency of the filter when used against gases which are soluble in water may be increased by saturating the carrier with a solution which reacts with the gas, but preferably not with the cuprous chloride, e.g. a concentrated solution of lead nitrate.ALSO:An absorbent for gas filters for breathing purposes, especially for use against hydrogen sulphide and ammonia, consists of cuprous chloride placed on a solid carrier which may itself be adsorptive such as activated charcoal or an activated inorganic gel. The efficiency of the filter when used against gases which are soluble in water may be increased by saturating the carrier with a solution which reacts with the gas, but preferably not with the cuprous chloride, e.g. a concentrated solution of lead nitrate.
Patent GB-1027386-A (GB)
Title: Improvements in or relating to portable track devices for road vehicles
IPC: B60B39/12
Filed: 1963-07-17
Abstract: 1,027,386. Portable tracks. E. D. DELANEY. Oct. 16, 1964 [July 17, 1963], No. 28282/63. Heading E1G. Three or more elements 11-14, which may be of expanded metal, are hinged together at 15 and provided with a tension member 24 attached near one end of the track so formed to ensure folding after the passage of a vehicle to which the tension member is attached. One end of the track may have a ground engaging claw.
Patent GB-952750-A (GB)
Title: Stud welding process
IPC: B23K9/20
Filed: 1960-08-16
Abstract: 952,750. Welding by pressure. KSM PRODUCTS Inc. Aug. 16, 1960 [Aug. 31, 1959], No. 28388/60. Heading B3R. In stud welding, a convex ended stud is held in contact with the periphery of a recess in the workpiece during passage of the welding current. Ferrous or non-ferrous, e.g. aluminium, studs can be so welded. The stud ends may be of the same or increased diameter relative to the shank and may be conical, spherical, spheroidal or polyhedral or shaped as solids of revolution of conic sections. The recesses are correspondingly shaped by punching or drilling so that the stud makes contact with the periphery only of the recess. Thus, e.g., a conical stud 30, Fig. 3, may contact a peripheral ridge 42 formed by hand punching a conical recess 38 in a workpiece 34 or a bulbous ended stud 32, Fig. 5, may contact the unridged periphery of a conical recess 38. The stud may be inclined at up to 20 degrees from perpendicular. The stud 16, Fig. 1, mounted in a holder 14 is pressed against the workpiece 36 by a spring 18 compressed by movement of a casing 12 which ultimately closes contacts 28 to operate relay 26 to close the circuit for a condenser 22 to discharge through the stud. Specification 917,543 is referred to.
Patent GB-535940-A (GB)
Title: Ship's lifeboats and landing craft
IPC: B63C9/02
Filed: 1939-10-23
Abstract: 535,940. Lifeboats. FLEMING, I. R.. and FLEMING. F. E. Oct. 23. 1939. No. 28433. [Class 113 (ii)] Ships' lifeboats are provided at the bows with a disembarkation opening 35 closed by a hinged door 36. The lifeboat may be provided with seating accommodation as described in Specification 332,084, [Class 113 (ii)], and may be provided with hand propulsion gear as described in Specification 209,112, [Class 113 (ii)]. For hook carrying purposes the seating is arranged in the main fore-and-aft and the disembarkation open-' ing is approached by a ramp. An armour-plated canopy extends over the seating.
Patent GB-1079246-A (GB)
Title: Process for the polymerization of ª-olefinic hydrocarbon material and catalyst compositions for effecting such polymerization
IPC: C08F10/00
Filed: 1964-07-10
Abstract: A catalyst composition or complex for the polymerization of alpha-olefinic hydrocarbons to solid polymers which does not contain aluminium or other reducing agent, is formed as a reaction product from a transition metal compound which is a halide, alkoxyhalide, or acetylacetonate of Ti, V, Zr, Cr, or Mo, and a compound of the formula R3Z wherein Z represents P, Sb, or Bi, and each R represents a hydrogen atom, or an alkyl, aryl, or aralkyl radical containing from 1 to 12 carbon atoms. The catalyst may also include an inorganic halide of a metal in Groups I, II or III of the Periodic Table.  The reaction product can be reacted with a reducing agent such as Al(C2H5)3, (C2H5)2AlCl, or LiC4Hg, and after reaction washed free of by-products.  Exemplified catalysts are (1) reaction product of triphenyl-phosphine and TiCl3 in varying proportions, and at various temperatures, and further in the presence of 0.1-0.2 gm. of NaCl, AlCl3, MgCl2, ZnCl2, and H2, (2) as (1) but wherein the triphenyl phosphine is substituted by tributyl phosphine, triphenyl antimony, and triphenyl bismuth, and (3) a complex of the formula [(C6H5)3P]2TiCl4 obtained from TiCl4 and (C6H5)3P in benzene solution, which was used per se for homopolymerization of ethylene and propylene, or reduced with an equivalent of (C2H5)3Al to [(C6H5)3P]TiCl3 and used to homopolymeriz ethylene.  The alpha-olefinic hydrocarbons may be ethylene, propylene, butylene, styrene, butadiene, isoprene, 1,3-pentadiene, and mixtures thereof. The polymerization is preferably effected in a hydrocarbon or halogenated hydrocarbon medium, and hydrogen may be present to control the molecular weight of the polymers.ALSO:A complex formed from a halide, alkoxyhalide or acetylacetonate of Ti, V, Zr, Cr or Mo, and a compound of the formula R3P where R represents an alkyl, aryl or aralkyl radical containing 1 to 12 carbon atoms is used as a polymerization catalyst.  In Example 8 a complex of the formula [(C6H5)3P]2TiCl4 was prepared by reacting TiCl4 with triphenylphosphine in benzene solution. The complex was reduced with one equivalent of (C2H5)3Al to [(C6H5)3P]TiCl3.
Patent GB-1399897-A (GB)
Title: Process of casting using polycrystalline extrudates as  fugitive cores and article formed thereby
IPC: B22C9/10
Filed: 1972-06-19
Abstract: 1399897 Foundry cores KEWANEE OIL CO 19 June 1972 [29 June 1971] 28523/72 Heading B3F [Also in Division B5] A casting core comprises a polycrystalline extrudate which may be an inorganic salt (e.g. an alkali metal halide) or a metal salt of an organic anion. As shown in Fig. 4 the extrudate is deformed around a cylindrical mandrel to form a helical core 12 which is cast into a block of aluminium 13. In Fig. 5 two portions of bent-up extrudate 15, 16 are welded together by heat and pressure to form a core 14 and cast into a block of aluminium. The cores 12, 14 can be removed by dissolution from their castings. In Fig. 7 there are shown cores 18 made from an extruded strip which is cut, heated and bent-up. Fig. 3 shows an aluminium mould comprising a base 5 and an outer ring 6 which is attached to the base by a screw-thread (not shown) or held to it by a taper. A pattern 7, located in the mould 5, 6, has bores 8 which hold cores 9 of polycrystalline extrudate. In order to form a formaminous gamma-ray collimator molten lead 10 is poured into the mould 5, 6 to the height required, allowed to cool and the casting complete with the cores 9 removed from the mould 5, 6. The casting may be machined along cut lines 11 with the cores 9 still in place to afford adequate strength to the casting during machining. In the example, a <SP>1</SP>/ 8  inch diameter 13 inch long core of extruded sodium chloride is cast into molten lead and after cooling flushed away with water to leave a passage. The cores may also be employed in the casting of microwave guides.
Patent GB-653837-A (GB)
Title: Improvements in or relating to turning tools for pipe ends
IPC: B23B5/16
Filed: 1947-10-25
Abstract: 653,837. Turning asbestos-cement &c. pipe ends. PASS & CO., Ltd., E., and COOKE, F. Oct. 25, 1947, Nos. 28551/47 and 7190/48. [Class 124] [Also in Group XXII] A tool for turning the outer periphery of pipe ends, particularly of asbestoscement, comprises a self-centring internalexpanding chuck having jaws 17 to engage and locate against the inner periphery and end of the pipe 18, means for expanding and contracting the chuck, a ring 22 rotatably mounted on the body 10 of the chuck. a tool-holder 29 mounted on the ring, means for rotating the ring, and separate means for advancing the tool for the cut. The body 10 comprises a disc mounted rotatably on a shaft 12 screw-threaded for engagement by a nut 15 to which the chuck jaws 17 are attached by links 16. The ring 22 is mounted rotatably on the body 10 in a groove provided by a two-part ring 19, 20. The tool-holder 29 is carried by a rod 28 slidable in a tubular housing 24 welded to the ring 22. Feed movement of the tool-holder is provided by a worm 27 mounted on the housing 24 and co-operating with a rack 32 on the rod 28. One end of the worm 27 is formed as a star-wheel 35 which is driven by contact with studs 36 provided by the two-part ring 19, 20 which is rotated by handles 23. After the jaws 17 have been positioned in the end of the pipe 18, the shaft 12 is turned in order to expand the jaws against the inner periphery of the pipe, a flange 18a on each jaw engaging the end of the pipe. A tool 37 in the holder 29 can be positioned for starting the cut by turning the worm spindle 26 with a key. To allow for use with a greater range of pipe diameters the tool-holder 29 can be provided with a shanked tool-extension. In the modification shown in Fig. 4, a tool housing 55 slides through a hole 56 in a rotatable ring 50 under the feed action of a shanked-nut 53 which engages the screwed shaft 52 of a tapered head 43 cooperating with the three segments of a chuck 40. A nut 46 is provided on the screw-threaded portion 45 of the shaft 52, and the ring 50 is rotatably mounted on this nut in a groove formed by means of a further nut 49. To position the device in the end of a pipe, the ring 50 is rotated by handles 51 after the ring and nut 46 have been locked together by means of a pin; the nut 46 then bears against the radial flanges 42 on the segments 40 and a head 43 expands the latter against the inner periphery of the pipe. After unlocking the connection between the ring 50 and nut 46 the ring is rotated to rotate and feed the tool 57.
Patent GB-408024-A (GB)
Title: Improvements in or relating to poultry houses or compartments
IPC: A01K31/17
Filed: 1932-10-13
Abstract: 408,024. Poultry-houses; rearing- appliances. GLOUCESTER INCUBATOR CO., Ltd., and WRENTMORE, G. W., Woodchester Works, Stroud, Gloucestershire. Oct. 13, 1932, No. 28560. [Class 5 (ii).] A ventilated, unheated poultry-rearing house or compartment comprises feeding equipment 13 forming part of the compartment, a metal mesh floor 5, a removable droppings pan 7, an air entry duct 21 extending under the droppings pan 7 and open at the front to the outside air, a channel 23 leading from the duct 21 to the rear of the compartment close to the mesh floor 5, an air exit 16 close to the front of the roof 3 of the compartment and means to vary the size of the exit, such as hinged glass doors 15, the apparatus being otherwise approximately airtight. The doors 15 move between side wings 19 and are held in their adjusted positions by catches ; the fronts comprising the feeding equipment 13, doors 15 and wings 19, may form detachable units. Baffles 27 deflect the entering air currents, and baffles 29 may be provided at the entries to the ducts 21. The compartments may be arranged singly, back-to-back or in tiers, as shown. According to the Provisional Specification, the air currents may be controlled by the raising, lowering or tilting of a vertical portion of the back wall, the air entering in a thin stream at the front of the compartment.
Patent GB-980934-A (GB)
Title: Circuit for controlling the power of inductive heating or melting equipment
IPC: H02J3/18
Filed: 1962-07-25
Abstract: 980,934. Supply systems for induction heating apparatus. DEUTSCHE EDELSTAHLWERKE A.G., and ALLGEMEINE ELEKTRICITATS-GES. July 25, 1962 [July 25, 1961], No. 28584/62. Heading H2H. In order to control the power of inductive heating or melting equipment the inductor 3 is divided into a number of sections having capacitors 6<SP>1</SP>, 6<SP>11</SP> connectable by means of switches 7<SP>1</SP>, 7<SP>11</SP> across one of the sections together with capacitors 4, 4<SP>1</SP> connected across the complete inductor 3 for the conventional compensation and for power factor adjustment. If desired, capacitors may also be associated with the other inductor sections.
Patent GB-248086-A (GB)
Title: Improvements in or relating to tyres, wheels and the like for use on aeroplanes and other vehicles
IPC: B60C15/02
Filed: 1924-11-28
Abstract: 248,086. Rapson, F. L. Nov. 28, 1924. Suspension-spoke wheels. - Wheels having ordinary spoke systems 7, and particularly for use on aeroplanes and racing cars, are reinforced by additional sets of spokes 42 - - 45 extending from the rims to sleeves 38, 39 at the hub. The two sleeves may be screwed on the hub or riveted to the ordinary spoke flanges; or they may be a sliding fit, and capable of movement, on the hub. The nipples 47 of the outer sets of spokes 44, 45 may be detachably fitted in slots in the rim edges 3. For further strengthening the wheel, the rim may be braced by chord-like ties secured directly to the rim; or, as shown in Fig. 14, these ties 48 may be secured to crosspieces 49.