baber/WOPTO huggingface dataset:
Patent GB-909236-A (GB)
Title: A method and apparatus for the continuous production of impregnating material for very-high-voltage electrical cables
IPC: H01B3/22
Filed: 1959-01-16
Abstract: <PICT:0909236/III/1> A mixture of distilled colophony and refined mineral oil, suitable for impregnating electric cables, is produced by partially vaporizing of a thin layer of molten colophony, previously freed from lower-boiling fractions, and condensing the vapours by direct contact with a cool layer or spray of the refined mineral oil, such as a lubricating oil which has been treated with sulphuric acid and then with clay.  Molten colophony is pumped through tube 6 on to a distributing plate 7 in column 8, which is evacuated to a pressure of 0,5 mm. Hg.  The colophony runs down surface 10, which is covered with metal-wire network and is heated to 180 DEG C. by external electrical means; and the volatile oils are distilled off.  The heavier fractions of the vapours are condensed on cooler 9, and the lighter fractions are condensed in cooler 16; and the combined condensate is collected in vessel 12 or 13, alternately. The colophony, freed from lower fractions, flows through siphon 30 on to distillation-column 19, on which rotates a metallic spiral 24. The column 19 is disposed in vessel 18 which is maintained at a pressure of 0,5 mm. Hg.  The column 19 contains a heating medium, such as tetracresyl silicate, which is electrically heated at the bottom 22.  The turns of spiral 24 are slightly elliptical, so that a small part of each turn is out of contact with the column.  As the spiral is rotated, the turns at first draw up some of the down-flowing film of colophony and then release it through the small gap as a very thin film from which evaporation takes place rapidly. The column 19 is heated to about 230 DEG C., and an abietic acid fraction is volatilized.  The vapours are condensed on a thin film of mineral oil, admitted through tube 21, flowing down the inner surface of the watercooled mantle 20 of vessel 18. The desired mixture of distilled colophony and oil is withdrawn from the apparatus through pump 26.  The distillation-residues are withdrawn through pump 27.
Patent GB-1023121-A (GB)
Title: Method of analogue-digital conversion
Inventor: NOVAK VAVRINEC
IPC: H03M1/00
Filed: 1963-01-15
Abstract: 1,023,121. Selective signalling. ZAVODY PRUMSLOVE AUTOMATISACE, NARODNI PODNIK. Jan. 15, 1963, No. 1738/63. Heading G4H. A voltage digitizing system of the type in which in response to a sequence of comparisons a reference voltage is sequentially modified until it matches the unknown voltage is characterized in that each bit-period of a digitizing cycle is divided into a central " active " portion and two flanking " passive " portions, the output from the comparator only being able to modify the reference signal during active portions.
Patent GB-892226-A (GB)
Title: Improvements in free-wheel mechanisms
IPC: F16D41/20
Filed: 1959-01-16
Abstract: 892,226. Ratchet gearing. SOC. BERTIN & CIE. Jan. 16, 1959 [Jan. 22, 1958], No. 1751/59. Class 80 (3). Ratchet gearing comprises a driving oscillating crank-arm 6 fast with a tube 1 surrounding a clutch coil formed by three helical springs 11, 12, 13 secured by equiangularlyspaced pegs 18 to a driven rotary shaft 2, the other ends of the three springs engaging lightly with the inner wall of the driving tube 1 so that, in one direction of relative rotation between the driving arm 6 and the driven shaft 10, the clutch springs are expanded radially into firm gripping engagement with the tube 1 and drive is transmitted therefrom to the shaft 2. Alternatively, the clutch springs 11, 12, 13 may be arranged to surround and grip a driven shaft. In the form shown, the ends of the clutch springs 11 ... 13 are each engaged by the radiallyprojecting ends 23 of three coiled springs 19 ... 21 secured to an inner tube 16 bolted to the driven shaft 2, the coiled springs 19 ... 21 biasing the clutch springs 11 ... 13 to unwind and accordingly engage the inner wall of the drive tube 1. In one modification, Fig. 2 (not shown), the coiled bias springs 19 ... 21 are replaced by pre-tensioned torsion rods having outwardly-projecting lugs engaging the clutch springs 11 ... 13, and in another modification, Fig. 4 (also not shown), a ring-shaped spring lying within the free-ends of the clutch springs 11 ... 13 biases the clutch springs into engagement with the drive tube 1. The tube 16 supporting the bias springs 19 ... 21 is secured to the driven shaft 2 by a bolt 51 and a nut 50, tightening the nut forcing the tube rightwards so that its coned end 15 is wedged into an internally coned sleeve 14 accordingly expanded into gripping engagement with the coils of the clutch springs 11 ... 13. A pump 30 supplies lubricating oil through passages 31 to lubricate the clutch coils and the bearings, and also to a sump 5.
Patent GB-157647-A (GB)
Title: Improvements in carburettors for internal combustion engines
IPC: F02M3/08
Filed: 1920-01-20
Abstract: 157,647. Zephyr Carburettors, Ltd., and Copson, T. C. Jan. 20, 1920. Spray carburettors.-In carburettors wherein there is fitted in the air passage A a choke tube B around which is a groove B<2> which communicates with the interior of the choke tube and with an atomizer or device for producing a rich mix. ture, the choke tube is in one piece and the groove communicates with the interior through slits B<3> in the form of saw-cuts. The device E, D<3>, F for producing the rich mixture is described in Specification 137,644. Slow-running passages H, H<2> controlled by a screwed valva, lead to the edge of the throttle valve C. The air passage A is preferably provided with a baffle G.
Patent GB-1277017-A (GB)
Title: Improvements in or relating to machine-tools
Inventor: RILEY RAYMOND ALEC
IPC: B23B29/20
Filed: 1968-05-17
Abstract: 1277017 Mounting pre-set tools DUNLOP HOLDINGS Ltd 13 May 1969 [17 May 1968 18 Sept 1968 11 Jan 1969] 23520/68 44260/68 and 1786/69 Heading B3T In a machine tool using preset tools an adjustable changer plate is provided upon which the tools are mounted the plate being adjustable aligned and secured to a tool supporting assembly in a machine tool, such as a turret lathe. The changer plate 1 comprises a base portion with a boss 3 and a central tool supporting aperture 5, sockets 7 being provided in the base which are locatable over pegs (not shown) which extend from the tool mounting face of the turret, adjusting screws 8 located transversely to the sockets and which in use engage the pegs to effect vertical and horizontal adjustment of the plate transversely to the turret and spindle axis of the lathe. Holes 2 are provided in the base portion for clamping screws by which the changer plate is secured to the turret or tool holding assembly. In the embodiments described numerous alternative ways of adjusting the plate relative to its support are described in addition to the above. In Fig. 6 the plate is provided with a lip 20 which is located above the top surface 21 of the turret and with which screws 19 co-operate to effect vertical adjustment of the plate. The horizontal location of the tool is effected by adjustment of a wedge shaped stop 22 secured to the plate face 26. Numerous alternative forms of stop are described with reference to Figs 9-14 (not shown). The changer plate adjustment means in Figs. 15 and 17 is in the form of an eccentric spigot 50 which is located in a bore 49 in the plate and which extends into engagement with a cooperating bore in the turret (not shown), the spigot being rotated by a screw member 53 which moves the plate transversely to the turret to effect adjustment thereof. Similar screw actuated ring members are described in Figs. 19-27 (not shown). In a further embodiment shown in Figs. 29 and 30 the adjustment is effected by screw members 88, 89 having eccentric heads 90, 91 which co-operate with sockets in the turret mounting face.
Patent GB-980864-A (GB)
Title: Improved process for the beneficiation of ores
IPC: C22B34/12
Filed: 1961-01-16
Abstract: The iron content of an ore containing compounds of iron and other metals, particularly ilmenite, is decreased by heating the ore in the presence of a reducing agent to bring about the formation of metallic iron, but without bringing the iron into the form of a molten mass or reducing the other metal compounds present in the ore, submerging the reduced ore in an aqueous medium and maintaining it in agitated suspension therein to effect physical separation of metallic iron from the remaining metal compounds whilst contacting it with an oxidizing gas to effect preferential oxidation of the element iron and effecting separation between the resulting iron-oxidation product and the remaining metal compounds.  Reducing agents specified are coal, coke, coal char, charcoal and carbonaceous reducing gases, and oxidizing gases which may be used include a mixture of air or oxygen and carbon dioxide, sulphur dioxide and nitrous oxide, the last two of which may be used either alone or in admixture with one or more of air, oxygen and carbon dioxide.  The reduced ore is advantageously separated from gangue and unburnt reducing agent prior to the oxidation step.  The oxidation reaction may be catalysed by the presence of sulphur or its oxides, sulphides, oxidizing agents, cations, e.g. ammonium, alkali metal, copper and cobalt ions, and inorganic and organic anions, e.g. acetate, chloride, sulphate, nitrate, fluoride and thionate ions.  The oxidation may be carried out at atmospheric pressure and a temperature of 60 DEG  to 80 DEG C., or at super-atmospheric pressure and an increased temperature, e.g. 100 p.s.i.g. and 150 DEG  to 170 DEG  C. The pH of the aqueous medium during the oxidation step is advantageously at least 4 and less than 7.  The examples relate to the removal of iron from ilmenite and from a gold-containing ore. Specification 547,898 is referred to.
Patent GB-450552-A (GB)
Title: Improvements in or relating to electric arc electrodes
Filed: 1935-01-19
Abstract: A composition for arc-lamp electrodes consists of powdered tungsten sintered with titanium and iron.  The tungsten may range from 75 to 99 per cent of the whole; as examples mixtures are described containing 78 per cent of tungsten, 20 per cent of iron and 2 per cent of titanium; 94 per cent of tungsten, 5 per cent of titanium and 1 per cent of iron; and 2-2 1/2 per cent of titanium and 1/2 per cent of iron, the remainder being tungsten.  Specification 327,464, [Class 82 (i)], is referred to.
Patent GB-746611-A (GB)
Title: Treatment of calcium nickel phosphate-containing catalysts
IPC: C07C5/333
Filed: 1954-01-21
Abstract: The thermal dehydrogenation of hydrocarbons, especially aliphatic mono-olefines having four or more carbon atoms/molecule and in particular normal butylenes to butadiene, is accomplished in the presence of a calcium nickel phosphate catalyst, preferably containing a minor amount of chromium oxide, activated by contact with steam and/or oxygen and/or air at 650-800 DEG  C.  In examples, butadiene is produced in catalysis-regeneration cycles in which mixtures of 20 parts of steam and 1 part of mixed n-butylenes are dehydrogenated at 575 DEG  or 650 DEG  C.  Specifications 634,391 and 634,580 are referred to.ALSO:A calcium nickel phosphate catalyst containing from 6.5-12 atoms of calcium/atom of nickel and substantially free from carbonaceous material is heated at 650-800 DEG C. in contact with steam and/or oxygen and/or air for at least 1 hour to increase its selective activity for the thermal dehydragenation of a n-butylene to butadiene in preferance to side reactions.  The preferred catalyst comprises a minor amount of chromium oxide and contains 7.5-9.2 atoms of calcium/atom of nickel; activation may be at 675-750 DEG C. for at least 5 hrs., e.g. 5-50 hrs.  The gas is preferably passed through a bed of the catalyst. Prior to the activation, carbonaceous deposits, if present on the catalyst must be removed, e.g. by a conventional burning-off step. Calcium nickel phosphate may be prepared by mixing suitable proportions of water-soluble calcium and nickel salts and a water-soluble orthophosphate in a neutral to alkaline aqueous medium, removing, washing and drying the precipitate, which may then if desired be mixed with a suitable binder such as graphite or mineral oil, pelleted or granulated, and the binder removed by oxidation, e.g. by heating in air or air and steam.  In the examples, in which both freshly prepared and used catalysts are employed, comparative results are given for the production of butadiene in catalysis-regeneration cycles, activation according to the invention being generally performed after 10 cycles. Specifications 634,391 and 634,580 are referred to.
Patent GB-688270-A (GB)
Title: Improvements in or relating to variable impedance devices
IPC: H01F21/04
Filed: 1950-01-24
Abstract: 688,270. Variable resistors with cam correction devices. COLVERN, Ltd., and COLLINSON, R. F. Jan. 24, 1951 [Jan. 24, 1960,] No. 1904/50. Class 37. [Also in Groups XXXV and XL (c)] The invention consists in a special form of mounting, as shown in Figs. 3 to 6, for the cam ring used in the cam-correcting devices disclosed in Specification 689,460. As indicated, Fig. 5, the cam contour adjusting screws 36 are provided with grooves 57 which engage the edges of corresponding slots 62 around the sheet-metal cam ring 35, Fig. 3. A copper wire 65 laced in criss-cross fashion as shown in Fig. 3, passes around the conical upper wall 59, Fig. 5, in each groove 57 and clamps the cam ring 35 firmly against the square lower wall 58 in each groove 57 with the groove mid-portion or neck, 64, Fig. 5, snugly fitting in the rounded end of the slot 62, Fig. 6. A portion of the cam ring 35 is shown raised at 65, Fig. 4, by adjustment of the corresponding screw 36 to produce an advance of the potentiometer wiper contact in relation to the control shaft whereby the resistance is increased for the particular scale setting of the control shaft.
Patent GB-370527-A (GB)
Title: Insulation plate for building purposes, and method for the manufacture of the same
IPC: A23L29/231
Filed: 1931-01-20
Abstract: 370,527. Nonconducting coverings for heat. ORVIN, J. E., 19, Kronprinsens Gate, Oslo, Norway. Jan. 20, 1931, No. 1908. Convention date, Feb. 13, 1930. [Class 64 (ii).] A heat-insulating block for building purposes comprises a closed flat box 2, Fig. 2, of cardboard or other fibrous material, e.g. wood pulp or cellulose which may be fireproofed. The box 2 is provided with ribs 3, 6 which are glued to a flat plate 1, preferably fireproofed, or where fireproofing is unnecessary, of threeply wood. This arrangement provides two layers of air insulation. The block may be mounted against a wall 5, Fig. 3, providing three air layers, or two layers of flat boxes, which may be partly closed, may be mounted between two plates 1, Fig. 4.
Patent GB-546187-A (GB)
Title: Improvements in and relating to power transmissions
IPC: F16H61/46
Filed: 1941-02-13
Abstract: 546,187. Hydraulic power systems. VICKERS, Inc. Feb. 13, 1941, No. 1956. Convention date, Feb. 23, 1940. [Class 69 (ii)] [Also in Group XXVI] In a hydraulic power system in which a work circuit 34 is supplied by a variable discharge pump 12 having a swinging yoke 14 which controls the displacement under control of a spring loaded piston 24 in a cylinder connected to the pump outlet 18, the inlet 16 of the pump is supplied with oil which passes through a cooling or filtering device 40, and a booster pump 42 is arranged to force the oil through the device 40. The pump 42 is arranged to supply oil to the pump at a rate dependent upon the pressure of the discharge of the pump by being driven by a fixed displacement motor 48 supplied with oil from the pressure line 32 leading to the circuit 34, and being connected to the inlet of the device 40. The booster pump 42 is also of the fixed displacement type, e.g. a gear pump, and the motor 48 and pump 42 are mounted side-by-side in a unitary housing.
Patent GB-524038-A (GB)
Title: Improvements in or relating to circuit arrangements for use in television or like systems
IPC: H04N5/16
Filed: 1939-01-20
Abstract: 524,038. Circuit arrangements for television. BAIRD TELEVISION, Ltd., and NUTTALL, T. C. Jan. 20, 1939, No. 1997. [Classes 40 (iii) and 40 (v)] A circuit arrangement for supplying interrupted potential to a load circuit 19, Fig. 1, especially intended for black level control or D.C. restoration in television comprises a thermionic valve 1, means 2 for supplying negative voltage pulses to the grid of the valve 1, an inductance 5 in the anode circuit of the valve 1, a first rectifier 6 having its cathode connected to the anode of valve 1 and its anode at a lower potential than the potential source 9 for the valve 1, a second rectifier 13 having its anode connected to the anode of the valve 1 by a condenser 12 and its cathode connected to the cathode of valve 1 directly or through a condenser 18, and a resistance 14 in shunt across rectifier 13. If the pulse generator 2 produces pulses at two frequencies, say at line and frame frequency, a diode 10 is inserted in series with the inductance 5 either where shown or at 11. As shown, rectifier 6 receives its voltage through a resistance 8, the same voltage is applied to a screen grid of the valve 1, and a stabilizing condenser 7 is provided. The pulses fed to the grid of valve 1 cause its anode current to vary as shown by lines 1, Fig. 2, producing a cycle of events A, B, C, D. During phase A, while grid of valve 1 is positive, current in inductance 5 gradually rises while current in rectifier 6 falls as shown by the graphs 5, 6 of Fig. 2. During short stage B, at beginning of negative pulse on grid of valve 1, inductance 5 supplies current to load circuit 19 as shown by graph 19 until charge of condenser 12 makes rectifier 13 conductive. During stage C, inductance current dies down through rectifier 13 as shown by graphs 5, 13 while voltage on load circuit is maintained as shown by graph 16. During the short and last stage D, at the end of the negative pulse on the grid of valve 1, the inductance 5 having spent its stored energy, the voltage at 16 on the load circuit falls back to its low level until the beginning of the next negative pulse on the grid of valve 1.
Patent GB-161332-A (GB)
Title: Improvements in web-feeding arrangements for typewriting machines
IPC: B41J17/00
Filed: 1920-01-22
Abstract: 161,332. Fairweather, W. C., (Underwood Typewriter Co.). Jan. 22, 1920. Web feeding and guiding arrangements. - Relates to web-manifolding arrangements, of the kind described in Specifications 23349/14 and 121,926, in which carbon sheets interleaved with the webs are connected to a trolly 92 running on rails 192 on the paper-carriage 24, the carbon sheets being fed forwards during writing and being retracted by means of the trolly during the platen roller 20 has been raised and the webs have been drawn up to a gauge 50. According to the invention, the trolly is provided with a web-clamp, consisting of a rigid blade and a stationary flexible jaw, for preventing the webs from creeping relatively; further, the clamping-device can be employed for forming loose bights in the webs, the line-spacing mechanism being thereby relieved from unwinding the webs. As shown in Figs. 1, 7, and 11, the clamp consists of a thin movable blade 61 and a flexible stationary jaw 62 having a bend for receiving the blade. The clamp extends across the trolly, and the jaw is secured to the detachable upper plate 90 of the trolly by means of the blocks 46 carrying the carbon-sheet fingers 30. The blade is secured to pivoted arms 70, 72 which are connected by a shaft 76 and are drawn downwards by springs 71, 73. The arms can be raised to release the blade by drawing forwards a finger-piece 64 formed on a link 66 connected to a bell-crank 67 which is provided with a pin 68 engaging the arm 70. The finger-piece 64 is adjacent to the finger-piece 65 for moving the trolly, the support 94 for the finger-piece 65 carrying a pin engaging a slot in the link 66; the link may be formed with a bend 93 engaging the support. The returning-spring 78 for the link 66 holds the jaw 61 in the closed position by causing the pin 68 to engage a cam surface 79 on the arm 70. There may also be provided hooks 85, Fig. 11, for engaging pins 84 on the arms 70, 72 when the jaw is closed, the hooks being secured to a shaft 86 and one of the hooks having an extension connected by a link to the bell-crank 67. To prevent interference with the webs, the shaft 76 is cranked and the shaft 86 is mounted beneath the plate 90. Before typing is begun, the trolly is moved to the rear, the webs are clamped, and the trolly is drawn forward to form, adjacent to the platen, bights in the webs; the trolly is then again moved to the rear to transfer the bights to the neighbourhood of the web-rollers 32. Typing is then begun, the clamp preventing creeping of the webs, and the line-spacing mechanism drawing-up the bights in webs.
Patent GB-524051-A (GB)
Title: Improvements in or relating to impregnated or coated products composed or inorganic artificial textile fibres particularly for electrical insulation
IPC: C03C25/26
Filed: 1939-01-20
Abstract: 524,051. Coated fabrics; profing permeable materials. ALGEMEENE KUNSTVEZEL MAATSCHAPPIJ N. V Jan. 20, 1939, No. 2036. Convention date, Jan 21, 1938. [Class 140] Impregnated or coated electrically insulating products composed of inorganic artificial textile fibres such as glass fibres are made by coating each of the fibres with an adhesive, forming the coated fibres into a textile material as by weaving, knitting or braiding and subsequently impregnating with a substance which is miscible with or adherent to the coating on the fibres. Suitable treating materials include synthetic resins, e.g., phenol - formaldehyde, glycerol - phthalate, 'polyvinyl and polymethacrylate resins, chlorinated naphthalene, drying oils, oil resin varnishes, natural resins, oils and waxes. The fibres may be first coated with an aqueous or organic solvent solution of an incompletely condensed synthetic resin, spun into yarn, heated to polymerize the resin and then woven into fabric or tape which is finally impregnated with the resinous condensation product. When an oil is used, it may be sprayed on the fibres during or immediately after their formation. The coating material may be set by heat after forming the fibres into a textile.
Patent GB-1080263-A (GB)
Title: Improvements in or relating to textile carding machines
IPC: D01G15/44
Filed: 1965-01-16
Abstract: 1,080,263. Carding engines. G. ROBERTS. March 31, 1966 [Jan. 16, 1965], No. 2044/65. Heading DIN. In a textile carding machine having a transfer roller 12 to remove material from a swift 10 for delivery to a second swift 11, a condenser or switch feed, a mixing roller 14 is provided in the angle between the swift 10 and transfer roller 12 to remove some material from the roller 12, particularly uncarded material lying high on the teeth of the roller, and return this material to the swift for further processing. Roller 12 rotates at between 20% and 50% greater surface speed than the swift with its teeth penetrating into the teeth of the swift. Garnett type wire is preferably used on the swift and Mirell type on roller 14. Roller 14 is adjustable towards and away from roller 12 and has a speed 15%-100% of that of roller 12. A burr beater roller 15 co-operates with roller 14 to knock vegetable and foreign matter into a tray 17. As shown material is removed from roller 12 by a doffer 13 and fed to a further swift 11. In Fig. 2 (not shown) the material is to be passed to a scotch feed or condenser and is removed from doffer (13) by a stripper (20) and a bright roller (21), the stripper and bright roller rotating with up to 30% faster surface speed than the doffer. A clearer and burnishing roller 18 with its teeth projecting into the mixing roller rotates at a speed up to 10% greater than the missing roller to remove fibre from the mixing roller and place them on the swift and to polish the teeth. A similar roller 19 is provided for the doffer 13.