baber/WOPTO huggingface dataset:
Patent GB-795793-A (GB)
Title: Improvements in or relating to the treatment of arsenious and/or sulpho-arsenious ores
IPC: C22B3/00
Filed: 1956-04-19
Abstract: <PICT:0795793/III/1> Arsenical and sulpho-arsenical ores are suspended in aqueous sulphuric acid and nitric acid is added progressively to oxidize the arsenides and thereby solubilize the metals.  The rate of addition of nitric acid is determined by observation of the redox potential: when there is a sharp increase, addition is stopped.  A preferred embodiment in which the ore comprises iron, cobalt, nickel and gold is shown in Fig. 1, wherein the finely divided ore is suspended in sufficient aqueous sulphuric acid to convert the metals to sulphates and provide an excess of 20-40 gms/l. to keep the iron in solution, and nitric acid is added until the redox potential suddenly increases due to complete oxidation of the ore. If desired only a part of the sulphuric acid need be initially employed, the remainder being added in portions with the nitric acid.  Nitrous vapours evolved are removed, reoxidized to nitric acid and re-used.  The mixture is cooled to precipitate arsenious oxide and the latter together with residual solids removed by filtration.  From this solid mixture arsenious oxide is separated by dissolution in hot mother liquor from a previous cycle, from which also it is precipitated by cooling.  The arsenic-free residue is resuspended in the filtrate from the acid treatment, and chlorine is passed in to solubilize noble metals and any cobalt or nickel still present in the residue and to oxidize to their highest valency the iron and arsenic present.  The operation can be controlled by means of the redox potential (as in Specification 795,790, to which reference is made).  Thereafter the solution is neutralized, e.g. with calcium carbonate to precipitate ferric arsenate.  For the latter purpose it may be necessary to adjust the Fe/As ratio in the filtrate from stage 4 to about unity.
Patent GB-569468-A (GB)
Title: Improved manufacture of malleable iron
IPC: C22C37/00
Filed: 1941-09-19
Abstract: 569,468. Alloys. GENERAL MOTORS CORPORATION. Sept. 19, 1941, No. 12051. Convention date, Jan. 6. [Class 82 (i)] White iron castings suitable for annealing or malleableizing are made by including in a composition which would otherwise form a grey or mottled iron a small amount of bismuth, e.g. 0.002-0.02 per cent. A graphitizer equivalent in effect to at least 1.3 per cent of silicon may be included, and also manganese, copper, molybdenum and other elements.' In general, the constituents of the irons may fall within the following ranges : 1-3.5 per cent of carbon, 0.5-2.5 per cent of silicon, 0.3-1.75 per cent of manganese, 0.25-2 per cent of copper, 0.1-0.75 per cent of molybdenum and 0.002-0.02 per cent of bismuth.
Patent GB-1402716-A (GB)
Title: Energy-absorbing composite structures
IPC: B60R19/34
Filed: 1972-03-16
Abstract: 1402716 Composite structural material NATIONAL RESEARCH DEVELOPMENT CORP 17 July 1972 [27 July 1971 23 Dec 1971 16 March 1972 15 April 1972] 12199/72 17505/72 35107/71 and 60110/71 Heading E1K [Also in Divisions B7 and F2] A tensile load energy absorbing hollow member is contractable inwardly under plastic deformation at a stress level less than its ultimate tensile strength. The member 16 is supported in its radially contracted state by a core 18, or it has a sufficient wall thickness to be self supported below the failure point. The member 16 is embedded as a reinforcement in a matrix 12, e.g. of polymeric material (resin) or ductile metal, and may be of high strength steel, carbon, boron or other high strength filamentary materials. The core 18 may be a wire of high strength steel or filamentary material, e.g. carbon, boron or glass fibres, or it may be hollow containing a further filamentary material. The core 18 and member 16 may be separated by a resin or other interlayer not affecting the contraction of the member. For transverse strength, an outer sheath 25 may be strongly bonded to the matrix and weakly bonded by a resin layer. or by lengths of resin 25A at the ends, to the member 16. The sheath 25 has a thin wall to fail in tension before elongation of the member 16 or has local weak points to promote shear. Upon the application of tensile stress, in all cases the member 16 debonds progressively from its immediately surrounding layer and, possibly, breaks away completely at its ends if the stress is continued. A vehicle bumper is attached to the right hand end of a core 36, Fig. 7, which has the hollow member 35 attached thereto at the other end. The outer end 38 of the member 35 is attached to the vehicle. A screw may be provided between the core 36 and the bumper to adjust the bumper position after stress application. This coremember assembly with the mounting parts may be used for reinforcing material, with respect to compressive stress.
Patent GB-738424-A (GB)
Title: Road making machines
Inventor: HOWARD ARTHUR CLIFFORD
IPC: E02D3/046
Filed: 1953-05-02
Abstract: 738,424. Road-making machines. ROTARY HOES, Ltd. May 3, 1954 [May 2, 1953; Jan. 30, 1954], Nos. 12221/53 and 2866/54. Class 107. A road-making machine.for compacting a top layer of loose material has a power-driven rotor 64 arranged transversely to the direction of motion, a frame comprising a reservoir (24) in which the rotor rotates in the loose material, tools 72 on the rotor throwing the material under a strickle 84 arranged transversely at the rear of the frame, and a transverse closely-spaced series of vertically-guided hammers 93 operated from a cam-shaft 62. The hammers are pivoted at 109 on arm 108 via a screwed sleeve 106 and actuated by a roller 111 on snail-cam 112. Auxiliary hammers 114 are carried on the main hammers, sliding freely vertically along them and are under control of a compression spring on the stem 116. These hammers are operated by their own inertia and effect a preliminary tamping. Rollers may be used for the preliminary tamping instead of the hammers 114. The hammers may have detachable sole-plates 123. Tracks 28 run on an assembly which carries the main part of the machine on arms 32 pivoted to the machine at 37. Each arm 32 is under the influence of a hydraulic cylinder 51 acting through levers 47, 46 and connected to the arm 32 through the telescopic strut 43 to a bracket 41. A crank-handle 44 provides fine adjustment for the height adjustment of the machine, the hydraulic cylinders giving the main adjustment. The rotor has axially-spaced angularly-staggered arms 69, 70 carrying T- shaped tools at their outer end. The tools are arranged to form opposed helices to give an intermixing action. The strickle 84 is arranged for independent height adjustment at each end. The machine is towed in use at about 6 ft. per min. by a tow-bar 27. Additives, such as pitch or cement powder and water, may be added in the mixing action.
Patent GB-736308-A (GB)
Title: A method of and means for suppressing or reducing interference in radio receiving apparatus
IPC: H04B1/12
Filed: 1952-05-14
Abstract: 736,308. Radio receiving systems. SHARDLOW ELECTRIC WIRES, Ltd., and MOULTON, E. W. Aug. 14, 1953 [May 14, 1952], No. 12249/52. Class 40 (5). Television or other dipole aerials Al, A2, for receiving plane polarized signals, one A2 mounted in the plane of polarization and the other A1 at right angles thereto, are connected to opposite ends of a half-wave line section transformer T and the receiver feeder connected to tappings t1 t2 on the line section which are adjustable so as to balance out interference. The transformer T may be linear or in the shape of a helix with a pair of tappings rotatable inside it. Alternatively the tappings t1, t2 may be connected to an impedance matching quarter-wave stub S closed at one end and the other end placed against the transformer T, both the latter and the stub being encased in insulation and the reactance of the capacitive coupling being balanced out by varying the length of the stub. Alternatively the aerials may be connected at a, b, as shown, to a rat-race hybrid ring formed of transmission line having plug-and-socket connections, the output being taken from either d or c.
Patent GB-316245-A (GB)
Title: Method of shaping flat braided hose and the like
IPC: D06C5/00
Filed: 1928-04-26
Abstract: 316,245. Ruppert, W. April 26, 1928. Calendering.-Braid, for example that used for insulating electric conductors, is ironed and given a circular section by drawing through a heated circular die c. The inside of the braid also may be ironed by means of a ball e larger than the final internal dimensions of the braid. The braid may be previously impregnated or not.
Patent GB-821851-A (GB)
Title: Improvements in and relating to fluid flow control valves
Inventor: HOLMES EDWARD WILLIAM
IPC: F16K27/02
Filed: 1956-04-23
Abstract: 821,851. Valves. LION STAMPING CO. Ltd. April 12, 1957 [April 23, 1956], No. 12430/56. Class 135. A metering valve comprises an internally-cylindrical body 3, with an inlet 16 and an outlet 22, having a flexible valve seating 18, e.g. of polyethylene, adjacent the inlet and a spindle screw-threaded at 26 to engage a corresponding thread in the body. A plain portion 28 of the spindle is an accurate fit in the bore of the cylinder intermediate the inlet and outlet and the cylinder has a helical groove 14, e.g. a continuation of the spindle actuating thread, extending from near the inlet to beyond the outlet so that when the spindle is rotated to its unseated position the liquid path through the valve includes a length of the groove depending on the axial position of the spindle. The spindle may be locked in an adjusted position by a screw 36.
Patent GB-708004-A (GB)
Title: Improvements in or relating to electron-optical apparatus
IPC: H01J37/20
Filed: 1951-05-28
Abstract: 708,004. Electron microscopes. SIEMENS & HALSKE AKT.-GES. May 28,1951 [Oct. 1, 1948]. No. 12513/51. Class 39(1) An object stage for electron-optical apparatus such as an electron microscope has cross displacement under spring control by two mutually perpendicular axially displaceable rods. Side projections 2, 3 on the stage 1 engage round bar springs 4, 5 which are clamped at their ends in a frame 6 which in turn include holders 7, 8 for bar springs 9, 10. The two sets of springs are at right angles and they resist resiliently the adjustment by rods 12, 13 to give a fine control of the movement of the stage. In a modification, Fig. 2 (not shown), a single metal sheet is provided with U-shaped slots to form leaf springs and with a central portion acting as the object carrier.
Patent GB-779551-A (GB)
Title: Improvements in textile spinning machines
IPC: D01H5/04
Filed: 1954-04-29
Abstract: 779,551. Gill spinning machines. CASANOVAS, J. G. April 29, 1954, No. 12521/54. Class 120 (1). A gill spinning machine for esparto grass, jute, hemp, flax and other fibres has two drawing units arranged in series, the sliver being fed to the second unit directly from the drawing roller of the first: Sliver passes through feed rollers 2, 3 and guide members 4 to drawing rollers 5, 6, 7, thence across a gill bed to drawing rollers 9, 10. Directly from the latter rollers, the sliver passes across the second gill bed to drawing rollers 12, 13 and then to a flyer 14. Both sets of gills may have their speeds of operation varied to alter the draft by changing pinions associated with the gill screws.
Patent GB-294722-A (GB)
Title: Improvements in or relating to lampshades
IPC: F21V1/26
Filed: 1927-05-10
Abstract: 294,722. Line, T. May 10, 1927. Drawings to Specification. Shades.-A decorative and protective binding for lampshades comprises a composition, cement, or plaster, made from any suitable base such as cement, resin, milk, celluloid, rubber, whitening, plaster of paris, papier-mache, or pulp, so as to be reasonably strong, slightly elastic, fireproof, and not cracked by heat. The composition is applied to the edges, and to the outside face, the inside face, or both faces of the shade, so as to conceal the constructional work, and it may also form the means of connecting the material of the shade to the framework. It may be applied in a plastic condition by smearing it on by hand, tool, or machine, by casting it on by means of moulds, or by dipping the shade one or more times in a solution of the composition. Alternatively the composition may be moulded, cast, or machined into any desired shape and then be secured to the shade in long or short sections. It may be secured in position by its own adhesive action, or a separate adhesive or other, preferably invisible, securing means may be employed. The binding may be left in its natural colour or it may be gilded, painted, or otherwise coloured. Numerous forms of the binding and methods of securing it to the shade are illustrated in the Specification.
Patent GB-682800-A (GB)
Title: Improvements in holders for electric lamp bulbs and like electrical devices
Inventor: HEATH CLARENCE WILLANS
IPC: H01R33/22
Filed: 1950-05-18
Abstract: 682,800. Lamp holders. CARR FASTENER CO., Ltd. April 27, 1951 [May 18, 1950], No. 12524/50. Class 38 (i). A holder for a lamp or like device having a contact-carrying base comprises a resilient, insulating body 1 having an opening formed with integral threads 3 to receive said base and an insulating, contact-carrying disc 4 secured in said opening by the resiliency of the body. The contacts comprise a central rivet 13 and an annular member 5 secured to the periphery of disc 4, said member 5 carrying integral arms 8, 10, the former projecting downwardly from one face of the disc for connection to a lead wire and the latter projecting upwardly from the opposite face of the disc, adjacent an axial slot 12 in the body, for engaging the side of the threaded base of the lamp or the like.
Patent GB-592071-A (GB)
Title: Improvements in or relating to means for turning in the ends of metal tubes
IPC: B21D41/04
Filed: 1945-05-18
Abstract: 592,071. Spinning. SPORING, P. A., JOHNSON, C. P., and TELEGRAPH CON. DENSER CO., Ltd. May 18, 1945, No. 12533. [Classes 83 (ii) and 83 (iv)] Making electric condensers.-In a machine particularly applicable for deforming by spinning the ends of electric condenser casings, the work 1 is placed by hand in a cradle 11 swung by a handle 13 to position it on rollers 4, 5 rotated by a pulley on a shaft 6. The forming roller 10 is rotated by a flexible shaft and carried in arms 16 connected by a lever 19 with a cam follower 25. When the work is in position actuation of a lever 39 trips a onerevolution clutch connecting a cam 27 with a driving-gear 29. The cam 27 advances the lever 19 to apply the roller with increasing pressure for the spinning operation. Specifications 581,848, 584,379, 584,801, 586,682 and 587,072, [all in Group XXXVI], are referred to.
Patent GB-906919-A (GB)
Title: A method for the after-stretching of tyre yarn of regenerated cellulose and the tyreyarn thus after-stretched
IPC: D02J1/22
Filed: 1960-04-08
Abstract: Regenerated cellulose tyre yarn is after-stretched at room temperature by first leading the yarn in a series of helical loops around a pair of positively driven feed rolls each of which is provided with peripheral grooves which are parallel and adjacent to each other after which the yarn is led in a series of helical loops around one or more pairs of stretching rolls each of which is provided with peripheral grooves which are parallel and adjacent to each other, the stretching rolls being driven at a higher peripheral speed than the feed rolls, such that the yarn is stretched at a stretch ratio of 1,10 to 1,15.  Prior to the stretching operation the yarn is conditioned to an average moisture content of 12% (\sB1%) to 14% (\sB1,5%) and prior to the stretching operation and before or after the conditioning of the yarn as above, the yarn is uniformly impregnated with a textile lubricant and contains, for example, at least 0,2% of the lubricant.  In the example, a package of tyre yarn manufactured from viscose is conditioned for 6 days at 20 DEG  C. in an atmosphere of 65% R.H. to an average moisture content of 12%, deviations from this value in different parts of the package not exceeding 1%.  The yarn is thereafter drawn off through an upwardly inclined channel having a diameter of 1 mm. and a length of 15 cm. to the lower end of which is supplied through a capillary tube of 1 mm. diameter a mixture of mineral oil and a sulphated vegetable oil at such a rate that the yarn leaving the channel contains about 1,0% of the lubricant.  The yarn is then stretched by 14% between a pair of feed rolls and a pair of draw rolls.
Patent GB-251776-A (GB)
Title: Improvements in refuse destructors
IPC: F23J1/00
Filed: 1925-05-15
Abstract: 251,776. Heenan & Froude, Ltd., and Bulgin, W. J. May 15, 1925. Grates; lighting fires. - In a refuse destructor of the type in which the grate is adapted to slide horizontally for the removal of clinker which is deposited on to a platform or bars beneath and removed therefrom by a plate depending from the grate, the heat in the mass of clinker is utilized for igniting the fresh charge of refuse and the clinker is finally discharged when cold. As shown in Fig. 2, the sliding grate B is provided with a pivoted plate or fingers E mounted on a shaft e. Upon removal of the grate the clinker falls on to a platform or bars D. During the inward movement of the grate the fingers E ride over the hot clinker which remains on the grate D and serves to ignite the fresh charge. Stops e<1> prevent the rotation of the fingers during the withdrawal of the grate and the cooled clinker is scraped into the discharge shoot F.
Patent GB-514259-A (GB)
Title: Improved apparatus for clarifying and/or mixing liquids
IPC: B01F3/08
Filed: 1938-04-28
Abstract: 514,259. Mixing and purifying oils and other liquids. MOORE, H. April 28, 1938, No. 12678. [Class 86] [Also in Group III] An apparatus for mixing liquids, for example blending lubricating oils, consists of two proportiometer'pumps 1A, 1B, connected through a common pipe line 2 to heat exchangers 5, 6, baffle mixer 7 and a heated receiver 3. The two liquids are mixed in the desired predetermined amounts by the pumps and, after beating and mixing, pass to the receiver from which they are drawn off by a pump 14 through the exchanger 6 to barrels. A constant level device 12 is provided, which may control a steam valve 13 on the steam inlet to 14. The mixed liquids may be clarified by blowing in a gas such as air or steam through a valve 8, the condensate being collected at 11.
Patent GB-1081849-A (GB)
Title: Sigmoidoscope and illuminating means therefor
IPC: A61B1/31
Filed: 1966-03-22
Abstract: 1,081,849. Sigmoidoscopes. SMITH KLINE & FRENCH LABORATORIES. March 22, 1966 [March 22, 1965], No. 12686/66. Addition to 1,048,600. Heading A5R. [Also in Divisions G2] The sigmoidoscope and lighting unit of the Parent Specification is modified in that the lamp unit 12a is formed with a sleeve 32a which fits completely around the end of the sigmoidoscope tube 14a when the sigmoidoscope and lighting unit are secured together. The tube 14a is also formed with slots 41a, 42a to mate with projections 40a on the eyepiece 13a, and with an aperture 49 to align with the air inlet or outlet nipple 18a on the lamp unit. A sealing ring 47 is provided either on each face of the lamp unit as shown, or on the end 19 of the tube 14a and on the eyepiece. The rod 23 carrying the lamp at its distal end is detachably secured by a pin and slot conneotion 52, 51 to a tubular member extending from the projection 25. The sigmoidoscope may be made from a high density polyethylene and the inside of the tube 14a may be given an abraded surface.
Patent GB-515349-A (GB)
Title: Improvements in hand-pieces for dental drills
IPC: A61C1/18
Filed: 1938-04-28
Abstract: 515,349. Dental Hand-pieces; syringes. TANGERUD, B. April 28, 1938, No. 12698. [Class 81 (ii)] A dental hand-piece, especially adapted for drilling into a tooth root from a recess 28 formed in the jaw as shown in Fig. 12, comprises a terminal portion reduced in cross section towards its drill-supporting end either progressively or in stages and carrying a drill mounted directly in a wheel journalled at an angle to the hand piece and enclosing a transmission mechanism, consisting either of pulleys and an endless cord, or of a train of gear wheels, which connects the drill to a crown or bevel wheel on an axial driving shaft. In the construction shown in Fig. 1 the bevel pinion 9 meshing with the pinion 8 in the driving shaft 7 is mounted coaxially with a pulley 13 connected to a pulley 14 by a cord 15. The pulley 14 has a circular aperture 21 extending into a rectangular aperture 20 to receive the stem and base of a drill. The pulley is mounted in bearings formed in the tapered hand piece 1 and a removable cover 2. In the construction shown in Fig. 4 the shaft 43 drives the drill through a train of toothed wheels 51-53 mounted in a member of stepped-down crosssection, the bearing of the drill-carrying wheel 53 being formed in a removable cover plate 42. A syringe, Fig. 11, for use in treating teeth by the method for which the hand-piece is adapted has a short nozzle 37 of not more than 3 mm. length.
Patent GB-1132766-A (GB)
Title: Improvements in or relating to the fabrication of fire-resistant articles from sheet materials
Inventor: TURNER EDWARD LAWSON
IPC: B29C65/10
Filed: 1966-06-23
Abstract: 1,132,766. Non-metallic ducts. TURNER & BROWN Ltd., and TURNER BROS. ASBESTOS CO. Ltd. 25 Sept., 1967 [23 June, 1966], No. 12719/66. Heading F2P. [Also in Division B5] Rectangular-section ducting is made from panels formed of asbestos fibre-reinforced rigid vinyl sheet by welding together parts to be adjoined to form a sealed joint which is thereafter reinforced by the application of a resinimpregnated tape made from asbestos or glass fibre. The sealing of each joint is effected by fusing, by a jet of hot gas or a solid polyvinyl chloride filler rod. Before the application of the reinforcing tape the joint is painted with a suitable resin, e.g. fire-resistant polyester resin, and then covered with the tape previously impregnated with the same resin. Bends in the ducting are provided by C-shaped panels and others pre-curved to the appropriate radii. The ends of juxtaposed lengths of ducting are secured by slipping loose rectangular metal flanges over them, thickening their terminal edges with strips of the same material bonded thereto and bolting the metal flanges together.
Patent GB-678593-A (GB)
Title: Means for adapting a machine-tool for profiling purposes
Inventor: SAXTON EDWARD SIDNEY
IPC: B23Q35/10
Filed: 1950-05-23
Abstract: 678,593. Copy-milling. ARMSTRONG SIDDELEY MOTORS, Ltd. Feb. 15, 1951 [May 23, 1950], No. 12854/50. Class 83 (iii). A copying or profiling attachment for a machine having a rotary spindle 28 and a traversable slide 32 comprises a sleeve 25 which can be keyed to the spindle and a frame 11 which is pivotally mounted on the sleeve and carries an adjustable support 45 for a follower 42. The frame is supported from an overhead bracket 56 by a pivoted bolt 51 carrying a compression spring 57 and a stop-nut 60. The spring 57 forces the follower 42 on to a pattern 41 mounted on the slide 32 which also carries a turbine blade 30. A skew gear 21 on the sleeve 25 drives a transverse shaft 18 which rotates a formed milling-cutter 35. The cutter-spindle 12 is mounted on ball and needle bearings. If the blade is not of constant profile, a narrow cutter is used and a series of traverses of the slide 32 is necessary instead of a single traverse in the case of the full-width cutter 35 illustrated.
Patent GB-388256-A (GB)
Title: Improvements in and relating to doors, panels, partitions and the like
IPC: E06B3/76
Filed: 1932-05-04
Abstract: 388,256. Doors; panels. ROWLANDS, T. H., PRITCHARD, H. M., and JONES, W. T., 24, Great Darkgate Street, Aberystwyth, Cardiganshire. May 4, 1932, No. 12893. [Classes 20 (iii) and 20 (iv).] A door, panel, partition, or the like, consists of a wooden frame a and a plane or corrugated metal sheet or sheets b having edges c serrated or otherwise formed so as readily to penetrate the base of grooves in the frame. The metal sheets may be duplicated and reinforcing rods may be combined therewith.