baber/WOPTO huggingface dataset:
Patent GB-1192971-A (GB)
Title: Purification of Pyrite Cinders
IPC: C22B1/10
Filed: 1967-06-28
Abstract: 1,192,971. Purification of pyrite cinders. MONTECATINI EDISON S.p.A. 28 June, 1967 [30 June, 1966], No. 29915/67. Heading C1A. Pyrite and pyrrhotite cinders, preferably from a pyrite roasting furnace are purified by reducing the cinders from haematite (Fe 2 O 3 ) to magnetite (Fe 3 O 4 ) with carbonaceous fuel e.g. Bunker C fuel, and air in a fluidized bed at 600-850‹ C. and chlorinating the hot reduced cinders at 650-950‹ C. in a fluidized bed under conditions such that any Zn, Pb and Au present is volatilized and removed as chloride while only the iron chloride is re-transformed into the oxide which remains. Reduction may be by use of excess hydrocarbon fuel and an insufficient amount of air thus producing a reducing gas mixture consisting of CO and H 2 . Chlorination may be carried out in two stages; in the first chlorinating stage Cl 2  is passed in countercurrent with respect to the cinders and heat is provided by the re-oxidation of the cinders; the second chlorinating stage is fed with a mixture of Cl 2  and air with Cl 2  present in a proportion of from 1-20% by volume. The Cl 2  may be generated by decomposition of the chloride of an appropriate metal e.g. an alkaline earth metal. The non-ferrous metal chlorides may be treated hydrometallurgically for recovery of the metals. Other non-ferrous metals specified include Ni, Co, Cd and Mn.
Patent GB-537261-A (GB)
Title: Improvements relating to the mounting of the doors or covers of pressure vessels
IPC: F16J13/18
Filed: 1939-11-13
Abstract: 537,261. Hinges. PICKARD, H. M. H., and LEEDS & BRADFORD BOILER CO., Ltd. Nov. 13, 1939, No. 29940. [Class 65 (ii)] The door 6 of a pressure vessel &c. such as that described in Specification 412,700, [Group XVIII], is mounted for adjustment towards and away from the vessel 3, and also vertically and angularly in the plane of the mouth 2. The first adjustment is effected by mounting the hinge pin sockets 14a on pins 15c adjustable in the supporting bracket 1 by means of nuts 15d. The vertical adjustment in the plane of the mouth 2 is effected by a screw 16 mounted in the lower socket and engaging the end of the hinge pin 14. The angular adjustment is effected by mounting the door on arms 17a, 17b carried by the hinge pin and secured to the door by studs 19a, 19b, 19c screwed into bosses on the door. The door has a slight pivotal movement on the bolt 19b, and angular adjustment is effected round this bolt by a screw 20 mounted in the end of the arm 17b and abutting on the boss 18c on the door.
Patent GB-1123896-A (GB)
Title: Vegetable trimming apparatus
IPC: A23N15/04
Filed: 1966-07-04
Abstract: 1,123,896. Trimming vegetables. PRODUITS FINDUS S.A. 4 July, 1966 [8 July, 1965], No. 29947/66. Heading A4C. An apparatus for trimming vegetables, particularly for cutting the stalks of Brussels sprouts, comprises a rotatable cutter, guiding means comprising a channel parallel to at least part of the cutter path and holding means for maintaining the vegetables in said channel and at least in part concentric therewith, one of the said means being movable relative to the other to impart to the vegetables a simultaneously rolling and translational movement along the channel. In the embodiment shown, sprouts are fed from a hopper 15 into a guide channel formed by two rimmed discs 7, 7a rotating coaxially with, but at a different speed from, a disc 3 carrying knives 6 which cut off stalks as they protrude from the channel. The holding means comprise a fixed ring segment 16 lined with resilient material 17. Alternatively the guiding means may be provided by one or more fixed members forming at least a segment of a circle and the holding means by a rotary ring.
Patent GB-667577-A (GB)
Title: Improvements in or relating to the continuous or semi-continuous casting of metals
IPC: B22D11/124
Filed: 1949-11-24
Abstract: 667,577. Continuous casting-machines. CHADWICK, R., HOBBS, J. F., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. Nov. 24, 1950 [Nov. 24, 1949], No. 30145/49. Class 83 (i). In the continuous casting of billets of substantially circular cross - section, in which the emerging billet is directly cooled by a water spray, the spray is interrupted at points around the periphery. This is stated to prevent central cracking of the billet by forming points of wealmess which facilitate release of stress by allowing slight distortion of the cross-section. In one form, water from a ring of jets 3 around the lower end of the mould 2 is prevented by a shield 4 from reaching the emerging billet 1 over an area indicated by the shading in Fig. 1. Alternatively, if the spray cools the billet only and not the mould as well, an incomplete ring of jets could be used. Each uncooled area is from three to four inches wide. If the mould coolant is used for the direct cooling of the casting by allowing it to flow out of the base of the mould the outlet is blocked at those positions where the cooling is to be interrupted.
Patent GB-718618-A (GB)
Title: Fastenings for bracelets, necklets or the like
IPC: A44C5/20
Filed: 1951-12-24
Abstract: 718.618. Bracelet and like fastenings. ANSON, C.. and TAYLOR, P. T. Dec. 18, 1952 [Dec. 24, 1951], No. 30149/51. Class 43 [Also in Group XXV] A fastening for a bracelet, necklet, belt, or the like, comprises a hollow base-piece a of trough-like section with flanges b along its longitudinal edges, and loops f, d at its ends for attachment to the article on which the fastening is to be used, the loop f being of hook-like form to provide a releasable fastening which is prevented from accidental disengagement from the end link g of the article by a spring-pressed slide c with side edges bent around the flanges b of the base and its front end normally closing the open loop f. In the example the slide c is formed with a projecting tongue k which closes the loop f. The compression, spring h is mounted on, and located between, an inturned tongue j on the forward end of slide c and a tongue i extending inwardly from the loop d The base and slide may be made of sheet metal, or plastic or other non- metallic material.
Patent GB-262144-A (GB)
Title: Improvements in or relating to couplings for use in rolling mills or the like
IPC: F16D3/26
Filed: 1926-11-29
Abstract: 262,144. Aktiebolaget Svenska Kullagerfabriken. Nov. 30, 1925, [Convention date]. Universal joints. -A rolling - mill coupling comprises coupling boxes 2 connected by a driving bar 1 each of which is held between blocks 4, 5 having a curved outer surface to fit the reoess 2<a> in the coupling box. Fig. 3 shows a cross section in which the screw 3 with wedge-shaped part 6 tightens the blocks 4, 5 on the bar 1 while bv nuts 3<a> the play between the blocks and the coupling box can be adjusted and reduced to obtain a uniform drive. Each coupling box is placed on its own roll neck and is provided with a recess for the wobbler. To obtain a good fit between the roll necK and coupling box wedges 7 or tightening screws 8 can be used. The recess 2<a> may be formed as two opposed coaxial conical frustra. In Figs. 5 and 6 the coupling box 2 is surrounded by a reinforcing ring 10. In another modification the blocks are concave and one block is split forming two wedges adjusted by screws in the periphery of the reinforcing ring.
Patent GB-1354607-A (GB)
Title: Injector type evaporative heat exchanger
IPC: F28D5/02
Filed: 1971-06-28
Abstract: 1354607 Evaporative tubular heat exchangers BALTIMORE AIRCOIL CO Inc 28 June 1971 [29 June 1970 19 May 1971] 30271/71 Heading F4S Apparatus in which a fluid flowing through tubes of a heat exchanger 24 is cooled or condensed by evaporation of water sprayed over the outer surfaces of the tubes, consists of an air conduit 10, shown as diverging from a relatively narrow inlet portion 19, into which water (e.g. from spray heads 22, 23) is sprayed on to the inner surface of the conduit to induce an air flow through the conduit thereby carrying spray on to the tubes, the unevaporated portion of the water collecting in a sump from which, e.g. the water is recirculated via an outlet 37 to the spray heads; said conduit having an air outlet 43 discharging at a zone remote from the inlet. The conduit outlet 43 may, as shown, be located at a higher level than the inlet 18, or it may be at a point horizontally remote from the inlet (Fig. 6). and the air may be guided away from the outlet by baffles (68). The flow of water to the spray heads (and hence the induced air flow and cooling effect on the heat exchanger) may be regulated according to the ambient temperature. The heat exchanger itself acts as a mist eliminator but further mist eliminators 42 may be provided. The heat exchanger, Fig. 4, consists of a bank of sinuous tubes connected to inlet and outlet headers 25, 26. The tube runs are supported by pipes 33 extending between L-section members 34. A further support (not shown) may be provided at the centre of the tube runs.
Patent GB-382754-A (GB)
Title: Processes of making nickel steels
IPC: C22C33/00
Filed: 1931-11-02
Abstract: Steel containing nickel particularly stainless steel is made by introducing into a steel bath molten nickel which has been produced by heating nickel matte with silicon or a silicon alloy in the presence of a basic slag.  The reduction of the matte may take place in the presence of the steel bath and the reducing agent which should be substantially carbon free may be commercial silicon, ferrosilicon, or a silicon alloy containing a metal to be alloyed with the steel, for example nickel or chromium.  If nickel-silicon, or ferro-nickel-silicon is used to reduce the matte both matte and reducing agent will contribute nickel to the steel.  In making stainless steel, chrome ore, nickel matte, and reducing agent, in admixture together, or in two separate batches, of reducing agent with chrome ore and nickel matte respectively, are charged with lime and if desired fluorspar and other fluxes into an open arc electric furnace.  A low carbon steel bath may be placed in the furnace before starting the smelting either by melting steel scrap and decarbonizing or by supplying the furnace with molten metal from a Bessemer or open-hearth furnace. Alternatively steel scrap may be incorporated in the smelting charge or supplied to the furnace after the smelting is completed. In an example an 18 : 8 chromium nickel stainless steel is produced by melting steel and decarbonizing by an oxidizing slag to 0,02 per cent of carbon, charging a batch comprising chrome ore, ferrosilicon, and lime followed by another batch comprising nickel matte, ferrosilicon, and lime.  The slag is removed and low carbon ferromanganese is added to the steel in the furnace after which a finishing slag comprising lime and quartzite is formed. The steel is worked under the slag to which small additions of ferrosilicon are made until metal and slag are deoxidized, and is then tapped into a ladle, treated with 0,25 per cent of silicon as 50 per cent ferrosilicon and cast.  Reducing agents containing silicon with nickel, or chromium or both nickel and chromium may be prepared by reducing nickel matte, or chromite, or both nickel matte and chromite simultaneously with silicon by means of carbon in the electric furnace.
Patent GB-1248266-A (GB)
Title: Improvements in or relating to electromagnetic relays
Inventor: CANT THOMAS
IPC: H01H50/28
Filed: 1969-06-16
Abstract: 1,248,266. Electromagnetic relays. PYE Ltd. 18 May, 1970 [16 June, 1969]; No. 30307/69. Heading H1N. An electromagnetic relay suitable for use on rack mounting printed circuit boards has a base 1 with contact members 9, 13, 16 secured thereto, a coil 31 wound on a bobbin 32, 33, a yoke 42, 43, an armature 51, and a cover 61 which has locating means such as apertures 65 cooperating with members 23 of the base in such a way that the coil, yoke and the armature are retained by the cover in their correct spatial relationship with each other and with the contact members. The cover has a projection 67 acting as an armature back-stop and has riveted thereto a spring 62 which engages the bobbin ends 32, 33 so that the limbs 42, 43 of the E- shaped yoke are urged against projecting pods 2, 5 (6) of the base 1. The U-shaped armature has contact actuating members 59, 60 mounted thereon and its mounting spring 54 has a centre limb 57 which fits within the bobbin aperture 34 with the centre limb 42 of the yoke.
Patent GB-1393180-A (GB)
Title: Work roll bearing lubrication arrangement
IPC: B21B31/07
Filed: 1972-06-28
Abstract: 1393180 Rolling mills BLAW-KNOX FOUNDRY & MILL MACHINERY Inc 28 June 1972 [28 June 1971] 30330/72 Heading B3M A rolling mill is provided with lubricant passages for supplying lubricant to the journal bearings of the working rolls, the passages being automatically uncoupled and coupled with a supply fitting when the rolls are changed. In one embodiment, Fig. 1, the bearings 20 and 22 of the upper and lower work rolls are connected by respective passages to supply fittings 60 (of which one is shown). The chocks of the rolls are coupled by a hollow latching unit 30 which supports the lower chock from the upper one during roll changing. The upper chock 16 is supported by a balancing piston 50, the piston having a housing 52 bolted to its top. An inclined face 58 of the housing co-operates (via a seal 70) with a similar face 44 associated with the chock. When the chock is in the position shown, the seal allows lubricant to pass from the fitting 60 to the passages leading to the bearings. In an alternative form (Fig. 3, not shown), the lower roll chock is supported by its own balancing piston which is similar to the piston 50; the latching unit 30 is then unnecessary.
Patent GB-536593-A (GB)
Title: Improvements in or relating to fluid heater cleaners
IPC: F28G3/16
Filed: 1939-11-18
Abstract: 536,593. Soot-blowers. BABCOCK & WILCOX Ltd., and GLINN, R. J. Nov. 18, 1939, No. 30347. [Class 99(ii)] The cleaning-fluid is supplied to a rotary manifold 4 formed with tubular arms 2, 3 extending at opposite sides thereof and arranged to rotate in the spaces between the tubes 6 to be cleared, the fluid emerging from holes 5 provided along and at the ends of the arms 2. 3. The arms 2,3 may be placed opposite one another as shown, or they may be staggered. The manifold 4 may be supported by plates 31, 32 bolted to the tubes 6. The arms 2, 3 may also exert a cleaning action by engaging the tubes 6 so as to dislodge material deposited thereon.
Patent GB-1160742-A (GB)
Title: Light Engine and method
Inventor: DEMENT JACK
IPC: H01S3/09
Filed: 1965-07-16
Abstract: 1,160,742. Stimulating photosensitive target. J. DEMENT. 15 July, 1966 [16 July, 19651, No. 30394/65. Heading B1X. [Also in Divisions G2 and H1] A method of effecting a chemical or physical change or stimulating a chemical or physical process comprises exposing photosensitive target 2, for example a laser resonator, to infra red and/or visible and/or ultra violet light generated by the ignition of an ignitable atmosphere surrounding the target in bomb 1. The ignitable atmosphere is preferably an ignitable or spontaneously igniting mixture of a finely divided solid, for example metal particles or particles of carbonaceous material dispersed in a reactant gas but may be a gas and/or vapour mixture (Examples are given). The ignitable mixture may be fed through mixer -feeder device (5) to peripheral supply manifold 4 and thence to injection inlets 4<SP>1</SP> controlled by needle valves 7, and if necessary may be ignited by means 8, for example a pair of spark or arc electrodes or electrical conduits bridged by a resistance heater element. The components of spontaneously igniting mixtures are fed individually. There is reference to an apparatus wherein a plurality of radially arranged laser resonators is sealed wholly within the bomb with their laser pulse output ends converging into an internally mounted chamber.
Patent GB-665360-A (GB)
Title: Improvements in or relating to electric welding
IPC: B23K11/11
Filed: 1948-11-23
Abstract: 665,360. Electric welding. IGRANIC ELECTRIC CO., Ltd. Nov. 23, 1948 [Dec. 6, 1947], No. 30400/48. Class 83 (iv). In a method of welding by the application of pressure to the work and by the passage of an electric welding current through the work, the pressure is obtained heat least in part from t force of an electromagnet through the winding of which some or all of the welding current is fed. The work 12a is arranged between a lower stationary welding-electrode 10 and a co-operating upper electrode 11, insulated from and carried on, a supporting lever hinged to the frame 13. The lever forms an armature for an electromagnet 14. Part of the unbalanced weight of the armature 15 may be counterbalanced by means of a spring (not shown) or other means when it is desired to limit the initial pressure of the movable electrode on the work. When it is desired to increase the initial pressure the magnet may be provided with a supplemental biasing coil (not shown). Current is supplied to the electrodes by a transformer 16, the connection from the secondary winding thereof to the stationary electrode being through an energizing winding 18 for the magnet hole 19. An adjustable impedance 20 may, if desired, be used to shunt the energizing winding 18. In welding a slight initial pressure is exerted upon the work parts 12, 12a, by the unbalanced weight of the armature, which may be augmented by a hand or foot lever connected to the armature 15; thereupon, the welding- transformer is energized so that the adjacent work faces are caused to melt and simultaneously a flux is produced in the electromagnet which pulls the movable electrode 11 towards the stationary electrode 10 and increases the degree of completeness of contact between the parts to be welded. Primary circuits for the transformer are described utilizing an alternating current source and also a simpler circuit with a battery and capacitor. The electromagnet may also be arranged to oppose the initial pressure where a relatively high initial pressure to be subsequently reduced is required.
Patent GB-1439925-A (GB)
Title: Projected-background composite photography
IPC: G03B15/00
Filed: 1972-06-29
Abstract: 1439925 Projected background composite photography SAMUELSON FILM SERVICE Ltd and H WAXMAN 29 June 1973 [29 June 1972] 30439/72 Heading G2X A background image of a scene previously photographed in colour on a so-called plate is optically projected on to a screen, a subject is positioned in front of the screen and a composite image of the subject against a background of the image of the plate projected on the screen is photographed in colour, the light used to illuminate the plate for projection of the background image being produced as, or separated into, three distinct light beams respectively consisting wholly of light of the three primary colours (which when equally mixed together would produce white light), at least two of the primary colour beams being individually adjustable in intensity and the three primary colour beams being combined into a single beam before impinging on the plate. The intensity of the combined light beam may be adjusted. A pilot image of the composite picture as viewed by the taking lens of the camera used to photograph the composite image may be displayed, its colour balance and/or brightness balance analyzed and the intensity of at least one of the three separate primary colour beams and/or the overall intensity of the combined light beam may be adjusted to produce an acceptable colour and brightness balance between the image of the subject and the image of the background in the composite image. The pilot image may be analyzed by photometric means, by scanning with an electronic waveform monitor in a closed circuit television system or by taking a colour photograph of the pilot image and visually inspecting the colour photograph. The plate may be a cinematographic film, the projector a cinematographic projector and the camera a cinematographic camera synchronized with the projector.
Patent GB-1515731-A (GB)
Title: Cooling system for a liquid-cooled internal combustion engine
IPC: F01P5/02
Filed: 1975-07-21
Abstract: 1515731 Annular radiators MOTOREN-UND TURBINEN-UNION FRIEDRICHSHAFEN GmbH 21 July 1975 [25 July 1974] 30458/75 Heading F4S [Also in Division B7] A motor vehicle liquid cooling system comprises a first annular radiator unit 11 having inlet and outlet pipes 26, 27; a radial for impeller 12 driven by the vehicle transmission 14; and a mounting plate 13 welded to the unit 11 for rigidly attaching the radiator to the vehicle body. A second annular radiator unit 23 is provided on the plate 13 for fuel cooling purposes. Fins 24 are mounted on the impeller for creating an air flow over the unit 23. Flexible ducting 17 is provided between an air inlet 16 and the inlet to the impeller 12.
Patent GB-825047-A (GB)
Title: Improved glass products and a process of preparing the same
IPC: C03B27/052
Filed: 1955-10-25
Abstract: 825,047. Tempering glass. MANUFACTURES DES GLACES PRODUITS CHIMIQUES DE SAINT-GOBAIN, CHAUNY CIREY S. A. DES. Oct. 25, 1955 [Oct. 25, 1954], No. 30540/55. Addition to 704,312. Class 56. A glass sheet which may be flat or curved, transparent or translucent, coloured or not has at least one "core-compressed" area in all parts of which there exists a system of compressive stresses in any direction parallel to the faces of the sheet, the stresses in the surrounding zone being characteristic of tempered glass. The process for making such area(s) comprises heating the sheet substantially to softening point and then rapidly cooling it, but during at least part of the heating, the desired area is protected by a screen of low calorific capacity (e.g. a thin sheet of polished metal) on one or both faces, and the magnitude of the compressive stresses to be produced can be increased by reducing the distance of the screen from the part in questions. The core-compressed parts may be readily drilled without fracturing making the sheets useful for building construction apart from their use as safety glass.
Patent GB-1111016-A (GB)
Title: Process for the purification of trioxane
IPC: C07D323/06
Filed: 1966-07-07
Abstract: High molecular weight oxymethylene polymers are obtained from trioxan which has been purified by liquid phase contact with activated alumina of particle size 10-200 microns.  In Example 3, BF3-etherate is used as polymerization catalyst.ALSO:Trioxan is purified by liquid phase contact with activated alumina of particle size 10-200 microns.
Patent GB-221707-A (GB)
Title: Improvements in machines for winding wire, cord and the like
IPC: B65H63/02
Filed: 1923-12-05
Abstract: 221,707. West, H., and Glover & Co., Ltd., W. T. Dec. 5, 1923. Stop-motions.-In machines for winding wire, cord, or the like the material passes through a passage in a block which is moved by the attempted passage of a kink therethrough and effects the stoppage of the winding-drum or reel, the, arrangement being such that stoppage is completely effected before, the block reaches the limit of its allowed movement, and the material is simultaneously slackened and the measuring- device, braked. A block d<2>, preferably provided with a perforated disc of leather, is connected by a rod d with a block d<1> slidable on a rod c, and the material passes therethrough and around a pulley b<2> on a block b<1> slidably mounted on a fixed rod b. A catch b<6>, pivoted to the rod b and to the rod c normally holds the block b<1> in position. A kink in the wire moves the blocks d<1>, d<2> into the position shown in dotted' lines, whereupon the upper part of the rod d is engaged by stops b' on the pulley b<2> and is moved thereby with the rod c so that the catch b<6> is released, thereby allowing the pulley b<2> to fall and slacken the material and the lever a<2> to fall and disconnect the clutch of the driving-drum. The falling of the lever a<2> allows a brake f<5> to fall and brake the wheel f<6> of the measuring-device.