baber/WOPTO huggingface dataset:
Patent GB-576768-A (GB)
Title: Improvements in radio frequency transformers
IPC: H03H7/01
Filed: 1944-06-05
Abstract: 576,768. High-frequency transformers.- BRITISH THOMSON-HOUSTON CO., Ltd. June 5, 1944, No. 10750. Convention date, June 5, 1943. [Class 38 (ii)] A radio-frequency transformer comprises a body member having a pair of recesses wherein the windings are located, a magnetic closure member for the recesses, means for varying the self-inductance of each winding separately, and means for varying their mutual inductance by varying the reluctance of the wall separating the recesses. The core 10 is recessed at 11, 11<1> to contain windings 21, 22 on formers 17, 18. The self-inductance of the windings 21, 22 is varied by positioning cores 31, 32 by rotation of bolts 33 in nuts 41 secured to an insulating board 37. The mutual inductance of the windings 21, 22 is adjusted by positioning a core member 44, comprising bodies 45, 46, within an air-space 12<1>, by rotation of a bolt 47 in nut 49 secured to the chassis 36. After adjustment of the member 44, subsequent frequency adjustment is made by the cores 31, 32. Preferably the magnetic structure comprises powdered iron particles of low resistance uninsulated and moulded together for better electrostatic shielding. A modification has separate closure members for the winding recesses and only one iron body for the core member which varies the mutual inductance, Fig. 3 (not shown). The Specification as open to inspection under Sect. 91 comprises also a reference to waxfilling of the spaces 11, 11<1>, 12<1> after adjustment of the core-member 44. This subject-matter does not appear in the Specification as accepted.
Patent GB-273850-A (GB)
Title: Improvements in or relating to hydraulic presses
IPC: B30B11/26
Filed: 1926-04-24
Abstract: 273,850. Barker, J. H. April 24,1926. Single-stroke apparatus with piston.-A hydraulic press is supplied with pressure liquid from a cylinder 25, Figs. 5 and 6, having a piston 32 with a screwed rod engaging a nut 34 driven by worm gearing, or a guided ram 40 engaged by a screwed spindle 48. Specification 227,483, [Class 69 (ii), Hydraulic presses &c.], is referred to.
Patent GB-829637-A (GB)
Title: Improvements in or relating to magnetic data storage systems
Inventor: KILBURN TOM
IPC: G11C11/06
Filed: 1955-04-14
Abstract: 829,637. Circuits employing bi-stable magnetic elements. NATIONAL RESEARCH DEVELOPMENT CORPORATION. March 29, 1956 [April 14, 1955], No. 10805/55. Class 40 (9). [Also in Group XIX] A magnetic storage core is set in one sense or the other by applying to a winding upon it an alternating current of symmetrical form and of a frequency above that at which the core can respond, and by rendering the magnetizing force waveform asymmetrical so that its peaks of a selected one polarity are greater than those of the other polarity by an extent sufficient to effect magnetization of the core in the selected sense. Many cores may be connected in a matrix arrangement and reliable selection in this way is less dependent on uniformity of the cores and on the rectangularity of their hysteresis characteristics. In one arrangement, Fig. 2, an alternating current of frequency f, Fig. 3 (a), is applied to the series-connected row windings of a selected row of a data-storage matrix and a current of frequency 2f, Fig. 3 (b), is applied to series-connected column windings of a selected column, from a frequency-doubler circuit connected to the oscillator generating the first current. A switch DVS enables the second current to be applied directly (i.e. in phase with the first current) or through a phasereversing circuit. The resultant magnetizing force waveform in the core at the intersection of the selected row and column will thus be as shown in Figs. 3 (c) or (d) and the core will, by virtue of the larger peaks, be set in the one sense or the other. As an alternative to the sine waveforms shown, square pulses may be used having repetition frequencies of f and 2f, and, in this case, to increase size of the peaks of the resultant waveform, the pulses occurring at the lower frequency may have an amplitude twice that of the other pulses. In a modification, the selected column conductor is connected to one or the other of a pair of oppositelyarranged rectifiers so as to render the magnetizing force waveform asymmetrical. According to a further modification (not shown) the cores described in Specification 814,942, which have holes in their limbs, may be used, the current of frequency f being supplied to the windings passing through the holes so as to modulate the reluctance of the cores in the neighbourhood of the holes and the second harmonic current being applied to the main windings and its phase being changed to effect setting of the core in one sense or the other. Non-destructive read-out may be effected, particularly in such an arrangement, as described in the above-mentioned Specification, or, in other arrangements, as shown in Figs. 2 and 4, by the means described in Specification 814,661, or as described in either of Specifications 797,941 and 814,941.
Patent GB-1489082-A (GB)
Title: Plastics bags
IPC: B65D33/00
Filed: 1974-03-12
Abstract: 1489082 Carrier bag pack IMPERIAL CHEMICAL INDUSTRIES Ltd 20 Feb 1975 [12 March 1974] 10898/74 Headings B8K and B8C A pack of carrier bags comprises a plurality of substantially identical carrier bags 1 each as claimed in claim 1 of Specification No. 1,338,934, each bag having in its back panel an aperture spaced from one seamed edge of the bag and substantially at the centre of the length of said edge, and a binding member passing through the aperture in each bag and between the innermost edges or folds 3, 4 of the two front panels and extensions, to secure the bags together substantially in alignment with one another. The binding member may be a string or wire or, as shown, a doubled wire 8 on which the bags are held by removable washers 9.
Patent GB-1063374-A (GB)
Title: Chromium-nickel-aluminium steel and method
Inventor: PERRY D CAMERON
IPC: C22C38/44
Filed: 1964-03-23
Abstract: A precipitation hardenable stainless steel comprises:-  .Cr.7-18% .Ni.6-12% .Al.0.5-2.5% .Mo.2-6.5% .Mn.up to 1% .Si.up to 1% .C.up to 0.05% .P.up to 0.04% .S.up to 0.015% .N.up to 0.05%  the balance, apart from impurities, being iron. The steels may also optionally contain:  .Ti.up to 0.15% .B.up to 0.005%  and one half of the nickel requirement may be replaced by Co in the ratio of three parts Co per part of Ni replaced.  The above composition is characterized in that either P is greater than 0.015% or S is greater than 0.01% or both these conditions apply.
Patent GB-126313-A (GB)
Title: Improvements in or relating to Journal Boxes for Railway Carriages and the like.
IPC: B61F5/32
Filed: 1919-05-02
Abstract: 126,313. Aktiebolaget Svenska Kullagerfabriken. May 3, 1918, [Convention date]. Void [Published under Sect. 91 of the Act]. Axle-bearing guiding-arrangements.-In order that the lateral thrust of the axle-box guides upon the axle-box 1 may be directed substantially along the centre of the axle 2 when, owing to uneven loading of the vehicle, the axle-box has a slightly oblique position relative to the frame or guides, the flanges, studs, or like guiding- members 3 on the axle-box are shaped convex or concave at their contacting surfaces 4 with respect to the part of the frame against which they bear. In the construction shown in elevation in Fig. 1, the surfaces form portions of cylinders the axes of which are horizontal and at right-angles to the axle 2. Parts of the surface 4 may, however, be plane, or the surface may be built up of a number of plane surfaces having a general convex or concave section. In a modification shown in plan in Fig. 6, the axle-box 10 is provided at each side with cylindrical studs 11 which are located in blocks 13 rotatable on the studs and bearing against the guides 12. In another modification, Fig. 8, the axle-box 18 has flanges 19 with concave cylindrical surfaces which bear against cylindrical blocks 21 surrounding the vertical guides 22.
Patent GB-1005444-A (GB)
Title: Desulphurisation of heavy fuel oil
IPC: C10G67/04
Filed: 1962-03-22
Abstract: The sulphur content of a high sulphur oil residue is reduced in a process which comprises in a first stage splitting up the residue (A) into a high asphalt and ash phase (C) and a low asphalt and ash phase (B) by vacuum distillation or by solvent extraction with a hydrocarbon, for example propane, butane, or pentane, and thereafter hydrodesulphurizing phase (B) at 140 atmospheres or above, and preferably 300-450 DEG  C. to yield a desulphurized heavy fuel oil phase (E).  Phase (E) may be mixed with phase (A) and/or phase (C) to produce a low-sulphur heavy fuel oil (F) of desired quality.  Part of phase (C) may be used for the production of bitumen or industrial gas.  By-products, especially light fractions, may be separated from phase (E). Specification 834,292 is referred to.
Patent GB-1079137-A (GB)
Title: Heat recovery process
Inventor: BUSS JOHN ROBERT
IPC: F22B1/18
Filed: 1965-03-19
Abstract: 1,079,137. Heat transmitting media; directcontact heat-exchangers. MONSANTO CO. March 16, 1965, No. 11034/65. Headings F4K and F4U. A method of recovering heat from hot gases utilizes as a heat storing and transmitting medium an organic compound which is heated by the gases in a heat-exchanger and then used as a heating medium for a liquid such as boiler feed water. The residual heat in the cooled gases may be used to preheat the water before it is brought into heat exchange with the compound. The heat exchange is effected in direct contact and/or in shell-and-tube apparatus. The organic compound according to the invention comprises (a) a chlorinated biphenyl having about 40 to 60% by weight of combined chlorine, or (b) a polyphenyl ether having 4 to 6 benzine rings, each ring or pair of rings being joined by oxygen ether linkages, or (c) a chlorinated polyphenyl ether. As shown, boiler flue gases enter a tower 33 through a duct 31 and pass upwardly in heat-exchange with droplets of chlorinated biphenyl ether emanating from nozzles 51. The chlorinated biphenyl ether stream is then circulated through a duct 52 and filter 53 to a heat-exchanger 55 where it gives up heat to water which has been preheated by the residual heat of the flue gases in a tower 35.
Patent GB-1172376-A (GB)
Title: An Improved Wet Developing Method for Developing Electrostatic Image with Liquid Developer
Inventor: KIMURA TAKUHEI
IPC: G03G9/12
Filed: 1966-11-10
Abstract: 1,172,376. Treatment of electrostatic images before development. IWASAKI TSUSHINKI CO. Ltd. Nov.10, 1966, No.11035/69. Divided out of 1,172,375. Heading G2H. Latent electrostatic images are coated with a pretreatment liquid miscible with carrier liquid of the developer of volume resistivity not lower than 10<SP>10</SP> and a di-electric constant not higher than 2À8 before application of liquid developer excess pre-treatment liquid being squeezed out by an elastic roller having a lower resistance and higher di-electric constant than the pre-treatment liquid, and a developer liquid having similar electrical characteristics is applied and excess developer squeezed out with similar rollers. Specified pre-treatment liquids are silicone oils, isoparaffin hydrocarbons, low molecular weight, polytriflourethylene and aromatic naphtha. Specified rollers consist of butadiene/acrylonitrile rubber and chloroprene rubber. Specified developers comprise carbon black, long oil alkyd resins, phthalocyanine blue dispersed in insulating liquids e.g. isoparaffins, naphtha, dimethyl polysiloxane liquid polymer and liquid polytrifluorethylene
Patent GB-233514-A (GB)
Title: Improvements in the manufacture of candles
IPC: C11C5/00
Filed: 1924-05-05
Abstract: 233,514. Candles, Ltd., and Griffin, J. P. D. May 5, 1924. Candles are formed with a cup C and with the wick 3 within the cup coated with wax 2, the size and relation of the cup and wick being such that on lighting the wick the edge 1 of the cup melts.
Patent GB-354239-A (GB)
Title: Improvements in or relating to alloys of palladium, silver and copper
IPC: C22C5/00
Filed: 1930-01-28
Abstract: An alloy particularly suitable for the electrical contacts of relays, switches, &c., consists of less than 25 per cent of palladium, copper, preferably 1-50 per cent, and silver, and is substantially free from iron and other metals impairing the ductility.  A small amount of a deoxidizer may be used in preparing the alloy by melting, and the heat treatments described in Specification 354,216, [Group XII], may be applied to improve its properties.
Patent GB-286912-A (GB)
Title: A stretching appliance for machinery belts
IPC: F16G3/00
Filed: 1927-04-26
Abstract: 286,912. Sewell, J. April 26, 1927. Strainers for bringing together belt ends for splicing comprise clamps a, b for the belt ends, each consisting of plates under the control of hand-operated nuts c<1>, d<1> working on bolts c, d, the lower plate a<2> of one clamp being bent at each end to U form to contain a sprocket wheel g<1> secured on a shaft e and held from reversal by a pawl h<2> and ratchet h<1>. A chain i passes over each wheel g<1> and is weighted at one end and attached at the other to the clamp b. The ends of the shaft e are squared to receive operating-handles f, which are turned to tighten the belt.
Patent GB-1419715-A (GB)
Title: Soilworking appliance arranged to be coupled to the lifting  device of a farm tractor
IPC: A01B51/04
Filed: 1973-03-07
Abstract: 1419715 Soil-working appliances WARTSILA AB OY 7 March 1973 [10 March 1972 29 May 1972] 11148/73 Heading A1B Appliance (shown in plan view) comprises beams 1 shown in the working position and connected by vertical pivots 2. Link rods 3 are connected to the beams by pivots 4. Soilworking tools are attached to the beams 1 and the appliance is coupled to the lifting device of a tractor and is drawn in the direction of arrow A. For carrying the appliance, it is closed up into a non-working (or transport) position so that all the beams are parallel thus reducing the overhang and bringing the centre of gravity of the appliance closer to the tractor. Pivots 2a, 4a may have additional movement about a horizontal axis.  In an alternative embodiment (Fig. 7) shafts 31 carrying disc tools are linked by triangular: chassis 33, 34 which when pivoted out of the horizontal plane bring the shafts 31 parallel while remaining in the horizontal plane.
Patent GB-579694-A (GB)
Title: Improvements in distributing apparatus for distributing lime and the like on the land
IPC: A01C15/10
Filed: 1944-06-10
Abstract: 579,694. Lime &c. distributers. VIGAR, C. R. J. June 10, 1944, No. 11152. [Class 6 (i)] A fertilizer and lime distributer mounted and driven from a vehicle 3 comprises a hopper 4 feeding a box 1, containing a screw conveyer 5 having right and left-hand portions 6, 7. The lime is fed evenly to the base of the box consisting of a plurality of slotted, relatively movable distributing plates 8, 10, 12. The upper and lower plates have corresponding slots which can be moved into and out of registration by lever 31. The drive-shaft 16 is driven from the axle of the vehicle 3 and a reciprocating motion given to plate 12 by gearing from a cam 28 on the driving shaft. A clutch 20 is used to disengage the drive and may be operated by a hand lever 24 also used to operate lever 31.
Patent GB-829068-A (GB)
Title: Improvements in novel laxative agents
IPC: A61K36/00
Filed: 1958-04-09
Abstract: A molecular complex of one or both of sennosides A and B (the glycosidal principles of senna) and a carbohydrate polymer, for example, guar gum, alginic acid, polygalacturonic acid is made by reacting together in an aqueous, alcoholic, or hydroalcoholic medium, e.g. water, a lower alcohol (containing not more than 6 carbon atoms) or mixtures thereof, sennosides A and/or B or a solid or fluid extract of senna and a carbohydrate polymer capable of hydrogen bonding with the sennosides.  The complex may be compounded in pharmaceutical dosage unit forms, e.g. tablets, capsules, suppositories, granules (for dispersion in aqueous fluids) which may contain 5 to 20 mg., preferably 10 mg. (tablets, suppositories or per teaspoon of granules) or 5 or 10 mg. (capsules) equivalents of the sennosides.  Specification 683,990 is referred to.
Patent GB-906859-A (GB)
Title: Process of refining benzene
IPC: C07C7/00
Filed: 1961-03-28
Abstract: In the purification of benzene by a series of aqueous sulphuric acid washing steps followed by a series of neutralising washing steps and fractional distillation, the benzene, prior to the first neutralising step, is contacted with 0,15-2% by weight of a watersoluble aliphatic aldehyde and at least sufficient water to dissolve the aldehyde and agitating for sufficient time to react the aldehyde with all the thiophene sulphur present.  Aqueous acetaldehyde may be used but commercial formalin is preferred and is added at the end of the second acid wash before the acid is separated.
Patent GB-988030-A (GB)
Title: Improvements in or relating to high tension electric cables and high tension electric cable installations
Inventor: GOSLING CYRIL HENRY
IPC: H01B7/29
Filed: 1963-03-21
Abstract: 988,030. Electric cables. BRITISH INSULATED CALLENDER'S CABLES Ltd. March 20, 1964 [March 21, 1963], No. 11273/63. Heading H1A. [Also in Division H2] A cable is cooled by supplying a liquid refrigerant under pressure to one of two channels extending within the cable, or parallel with it or running helically with it, which are separated by a porous wall so that the liquid evaporates and abstracts heat directly or indirectly from the conductor. In Fig. 1, three 132 kV cables are drawn into a single steel or plastic pipeline 5 which acts as the return coolant channel for each cable. Each cable has a central liquid channel 1 formed by a steel spiral surrounded by the stranded copper conductor 2 and insulated by lappings of polycarbonate tapes 3. The tapes have ten transverse serrations per millimetre about 10 microns deep. A perforated metal screen 4 is an open turn lapping of non-ferrous metal of D-shaped cross section. The refrigerant is sulphur hexafluoride at 245 pounds per square inch, and the flow rate 0.3 litres per hour per yard. Other suitable refrigerants are liquid air, nitrogen or helium, ammonia, carbon dioxide, sulphur dioxide, chloro- or dichloro-difluoromethane. In another embodiment (Fig. 2) pipes 12 having a porous pipe 13 (Fig. 3, not shown) inside them containing the liquid are laid between cables of conventional construction buried in the ground. The porous pipe may be formed of microporous high density polyethylene or polyvinylchloride. In another construction (Fig. 4) the conductor 21 is supported concentrically within a liquid channel 22 formed by the porous wall 23 which is supported in the steel or plastic pipe 25 by a helical spacer of low thermal conductivity. The refrigerant need not be an insulator, and the conductor may be a super-conductor. A cable terminator and stop joint are described (Fig. 5, not shown) at which the fluid channels are connected to refrigerating apparatus, which may be of the absorption type.
Patent GB-662534-A (GB)
Title: Combined saw blade, square and mitre
IPC: B27B21/08
Filed: 1948-04-23
Abstract: 662,534. Saws. PEEPLES, M. E. April 23, 1948 [June 12, 1947], No. 11290/48. Class 61 (ii) [Also in Group XX] The blade 10 of a saw has a straight back edge 11 and has fixed on opposite sides a pair of channel section members 12 and 19 for use as a square and mitre respectively, the handle 18 having tongues 17 and 23 which engage in the channelled members. The members 12 and 19 may be spot welded or otherwise secured to the blade and the handle secured by fastening means 24. Specifications 662,535 and 662,536 are referred to.
Patent GB-1498198-A (GB)
Title: Process for producing vessels for containing reactive molten metal
IPC: F27B14/08
Filed: 1975-03-19
Abstract: 1498198 Metallurgical vessels UNION CARBIDE CORP 19 March 1975 [23 Dec 1974] 11345/75 Heading F4B A metallurgical vessel having a cast iron shell 31 is protect against attack by the molten metal contained in the vessel by lining the inside of the shell with self-supporting refractory plates 45, which are inert to the molten metal and arranged to be free to move relative to each other and to the shell upon thermal expansion, the molten metal being permitted to penetrate behind the lining through joints opened by the expansion to combine with the iron of the shell and form a solid refractory layer which prevents further contact between the molten metal and the cast iron shell. The molten metal may be aluminium or an alloy of it, and the refractory layer formed consists of FeAl 3  or Fe 3 SiAl 12  if the alloy or cast iron contains silicon. If the cast iron contains chromium a solid phase CrAl 7  may be formed. The refractory plates may be of graphite, or silicon carbide or some of each of these materials.
Patent GB-1430498-A (GB)
Title: Overvarnish unit for continuous motion decorating apparatus
IPC: B05C13/00
Filed: 1974-03-14
Abstract: 1430498 Coating apparatus SUN CHEMICAL CORP 14 March 1974 [21 March 1973] 11450/74 Heading B2L In an apparatus with spindles 20 on which cylindrical containers are conveyed along a feed path through a coating station, the station includes a subframe 25 which is removable as a unit and supports coating control, transfer and applicator rolls 31, 32, 33 which are adjustable independantly on the sub frame 25. As shown cans pass a multicolour printing press 22 with a rotating image-transfer mat or blanket 21 and the coating station on the spindles 20, and are transferred to suction cups on wheel 27 and thence to horizontal pins 29 carried through a curing oven. Rotation of a hand wheel 44 (Fig. 2) pivots an eccentric sleeve (76) (Fig. 8 not shown) supporting the roll 31 to adjust the nip 34 between the rolls 31, 32 and rotation of a handwheel 36 pivots the frame 46 about a shaft 47 to adjust the nip 35 between the transfer and applicator rolls 32, 33. Rotation of a third handwheel 39 adjusts the nip 38 between the cans and the resiliently surfaced roll 33 by rotating a threaded shaft 79 (Fig. 6) and hence moving the internally threaded support 81 carrying the shaft 42 of the roll in the sense of the arrow 43 (Fig. 2). Means for adjusting the parallelism of the rolls are also described and illustrated. To avoid coating of a spindle 20 when no can is present an eccentric shaft 85 is rotated automatically to drop the support 81.
Patent GB-1469841-A (GB)
Title: Bearings
IPC: F16C33/51
Filed: 1974-03-14
Abstract: 1469841 Bearings RKS 14 March 1974 [20 March 1973] 11505/74 Heading F2A An apertured spacer for a thrust rolling bearing cage comprises a groove 4 or protuberance on the radially outer side designed to co-operate with a ring 8, and at the opposite side two cylindrical surfaces 9, 10 of identical radius which have their axes 9a, 10a parallel to that of said bearing, the said surfaces being arranged to engage with complementary surfaces provided on adjacent spacers. The rolling elements may be cylindrical or conical rollers, or balls, and each is a snap fit in the aperture of a respective spacer. The spacers and ring 8 are of plastics. Reference is made to Specification 1,175,810.