baber/WOPTO huggingface dataset:
Patent GB-1041520-A (GB)
Title: Improvements relating to magnetic ferric oxides
IPC: G11B5/706
Filed: 1964-12-24
Abstract: A grinding composition comprising ferromagnetic iron oxide in a liquid non-solvent medium.  The ferromagnetic iron oxide consists of ferroso-ferric oxide, or gamma ferric oxide, or a mixture thereof, both in the form of acicular particles less than 100 mm  long and less than 20 mm  wide and having a length to width ratio greater than 4:1.  The ferromagnetic iron oxide may be prepared as described in Division C1.ALSO:Ferromagnetic ferroroferric oxide and/or g -ferric oxide, suitable for use in magnetic impulse record members, in the form of acicular particles less than 100 millimicrons long and 20 millimicrons wide and having a length to width ratio greater than 4, is prepared by dehydrating acicular b -ferric oxide hydrate at 205-275 DEG  C. in a gas stream and reducing the amorphous Fe2O3 so obtained at 275-375 DEG  C. The so produced ferroroferric oxide may then be oxidized to g -ferric oxide at 90-300 DEG  C. in presence of oxygen.  The reducing gas may be a mixture of hydrogen and nitrogen or carbon monoxide and nitrogen and may replace air or a gas chemically inert to ferric oxide in the dehydration step.  The b -ferric oxide is prepared by mixing a solution of a ferric salt with a buffering and complexing agent, refluxing, cooling and dispersion of particles in a vol. prior to recovery of oxide particles.  The oxide may also be used in a grinding composition which comprises a liquid non-solvent medium.
Patent GB-1132347-A (GB)
Title: Strap frame electrodes
IPC: F04B43/067
Filed: 1965-12-10
Abstract: 1,132,347. Brazing. SYVANIA ELECTRIC PRODUCTS Inc. 10 Dec., 1965 [11 Dec., 1964], No. 52587/65. Heading B3R. [Also in Division H1] In bonding the refractory metal wire helix 43 to the refractory metal side members 33 in a strap-frame electrode 41 a layer of particulate iron 47 is applied around the areas of contact of the helix with the side members and the assembly is heated to a temperature no greater than 900‹ C. to cause the interdiffusion of the iron into the helix and side members and the formation of diffusion bands. A frame having molybdenum side members 33 and molybdenum cross members 35 is wrapped with a helix of tungsten wire and a slurry of iron particles in an organic binder is painted on the areas of contact 45. The assembly is then heated to 800‹ C. for 10 minutes in an atmosphere of dissociated ammonia so that the binder is volatilized and the iron particles sinter and diffuse into the helix and side members. The side members and helix may be of columbium, platinum, ruthenium or alloys thereof.
Patent GB-1541333-A (GB)
Title: Fuel injection nozzle
IPC: B05B7/08
Filed: 1977-12-19
Abstract: In such an injection nozzle for an air-compressing, direct- injection internal combustion engine a nozzle needle (2) is guided in the injection nozzle body (1) and pressed by spring force onto a seat (3). From a hollow cavity (5) arranged in the injection nozzle body (1) four nozzle bores (6), running parallel and closely adjacent to one another, run out into the combustion chamber at an angle (x) to the injection nozzle longitudinal axis (x). The disadvantage inherent in such internal combustion engines that the mixture formation in the lower load range, when idling and in starting does not proceed swiftly enough due to insufficient warming of the combustion chamber wall is overcome in that the fuel forms smaller fuel droplets in the lower and middle speed and load range and crosses the combustion chamber as a closed fuel jet only in the upper speed and load range of the engine, thereby achieving a mixture formation as in the case of a single-hole nozzle. <IMAGE>
Patent GB-1098308-A (GB)
Title: Fluorescent phosphor
IPC: C09K11/70
Filed: 1964-12-30
Abstract: A self-activated phosphor comprises thorium copper orthophosphate, the copper occupying regular lattice sites and the ratio of copper atoms to thorium atoms lying between 0.25 and 0.80, preferably 0.50, for peak emission in the orange-red, red region when used in high pressure mercury lamps.  Preferably the ratio of thorium plus copper atoms to the orthophosphate radical is stoichiometric.  The phosphor may be prepared from a mixture of b -ThP2O7, Th3(PO4)4, ThO2 and Cu2O which is fired in air first at 800 DEG  C. and then at 1150 DEG  C., before being refired in a steam-nitrogen atmosphere at 1000 DEG  C., the mixture being milled or mortared between each firing.  Specific examples are given.ALSO:A thorium copper orthophosphate phosphor has the copper occupying regular lattice sites and the ratio of copper atoms to thorium atoms lying between 0.25 and 0.80, preferably 0.50. Preferably, the ratio of thorium plus copper atoms to the orthophosphate radical is stoichiometric. The phosphor may be prepared from a mixture of b -ThP2O7, Th3(PO4)4, ThO2 and Cu2O which is fired in air first at 800 DEG  C. and then at 1150 DEG  C., before being refired in a steam-nitrogen atmosphere at 1000 DEG  C., the mixture being milled or mortared between each firing. Specific examples are given.
Patent GB-1449720-A (GB)
Title: Rotating cutting tool
IPC: B24D13/10
Filed: 1974-12-07
Abstract: 1449720 Abrasive tools VSES NAUCH ISSLED INST PO STROITELSTVU MAGISTRAL TRUBOPROVODOV 7 Dec 1974 53004/74 Heading B3D A rotatable cutting tool for surface machining of articles and materials, such as rods, comprises at least two sets 5, 6, 7, 8 of radially arranged flexible cutting members constituted by pieces of wire of the same length, the members of each set being fastened together at one of the ends thereof, the free cutting ends of the members forming a common working surface, and a ring-type packing member 9, 10, 11 respectively installed between the or each pair of sets of members, the packing member or members being such as to position the sets so that the cutting members form the working surface to a desired shape. The sets of cutting members are mounted in a case comprising a pair of flanges (2, Fig. 1, not shown) secured to a bus ring (3) by bolts (4). The sets 5, 6, 7, 8 of cutting members together with the packing members 9, 10, 11 are fastened together by, for example, welding or soldering, and are assembled into a packet by gussets 12. The cutter members are thus pressed against each other at their fastened ends along their side surfaces, the other ends forming the working surface A. The ratio of the face areas of the tips of the members to the entire area A is between 0À1 to 0À99. The Specification includes formulµ for determining the overall thickness of the packing members for a particular curvature of the working surface A and with the. ends of the cutting members perpendicular to the surface. Lateral deflection of the cutting members may be prevented by shorter wires in the outer sets 5, 8 of members. A number of tools may be arranged so that the complete circumference of a rod is machined as it is passed between the tools. In another embodiment for machining a corner of a rolled iron workpiece, two sets 14, 15 of cutter members are spaced by a packing 16.
Patent GB-537397-A (GB)
Abstract: 537,397. Rotary electric reducing furnace. ASSOCIATION DES OUVRIERS EN INSTRUMENTS DE PRECISION. March 25, 1939, No. 11027/40. Convention date, May 30, 1938. Divided out of 9439/39. [A Specification was laid open to inspection under Sect. 91 of the Acts, Oct. 16, 1939.] [Class 39 (iii)] [Also in Group XII] A reducing furnace for powdered iron ore is supplied with heated reducing gas such as hydrogen by passing the gas through passages in the furnace wall before it enters the furnace. Fig. 1 shows an electrically heated rotary furnace having hollow walls containing fossilized silica 78. The heating elements 83 comprise heating resistances 3 and cooling tubes 99, 100 through which water is circulated by a scoop 108 which picks up water from the vessel 101 and supplies it to the cooling tubes. The reducing gas is supplied by a pipe 79 to the hollow wall at one end of the furnace and after passing over the silica 78 passes through chambers 80 containing metal filings acting as filtering material and enters the other end of the furnace through a space provided between a sleeve 81 and the electric heating element 83. The gas passes from the furnace through a perforated hollow plug 86 containing filtering material and to a pipe 82 and is afterwards led to a cooling coil 102 and to chambers 98, 97 for producing and supplying the gas. A pyrometer 72 arranged axially within the heating element projects from the end of the element and forms a support for the plug 86. The furnace is charged and discharged by inserting a tubular member 90, Fig. 4 provided with a helical blade 91 into the end of the furnace in place of the plug 86. The member 90 has a curved scoop 92. Specification 527,430, [Group II], is referred to.
Patent GB-1213686-A (GB)
Title: Improvements in magnetic films having a predetermined coercivity and method of forming
IPC: H01F10/32
Filed: 1968-11-14
Abstract: 1,213,686. Magnetic recording media. GENERAL ELECTRIC CO. 14 Nov., 1968 [4 Dec., 1967], No. 54016/68. Heading H1H. A magnetic film of predetermined coercivity is made by depositing on a substrate a magnetic film of Fe, Co, Ni or an alloy thereof, less than 3000  thick and having a grain size less than 500 ; contacting the film with a material reactive with the film-forming metal, and reacting at least a portion of the material with the metal at the grain boundaries to magnetically isolate the grains and raise the coercivity of the film to the predetermined value. The reactive material does not penetrate the magnetic film beyond the grain boundaries. A coercive magnetic medium (i.e. having a magnetic intensity reducible to zero by application of a negative magnetizing force) consists of such a film on a substrate with or without an intermediate layer and/or a protective outer layer. The medium may comprise 2 or more superimposed magnetic films. The reaction of the metal film may be effected by heating or annealing it in a reactive gas e.g. oxygen, or by immersing it in a reactive material. The film itself may be made by vacuum deposition on the substrate, preferably at an angle of incidence normal to the substrate. The partial oxidation of an iron film by heating it to 100-600 C. in air at 10<SP>-4</SP> Torr is described. Specified substrates are glass, copper, aluminium and polyimide. In one embodiment, a glass substrate is coated consecutively with copper, iron, palladium and copper.
Patent GB-1165567-A (GB)
Title: Improvements in and relating to Colour Television Receivers.
Inventor: GRAY REGINALD EDWARD
IPC: H04N9/73
Filed: 1966-12-02
Abstract: 1,165,567. Colour television. THORN ELECTRICAL INDUSTRIES Ltd. 4 Dec., 1967 [2 Dec., 1966], No. 54042/66. Heading H4F. In a colour television receiver having three colour-component signal channels a single tintcontrol potentiometer is arranged to vary the D.C. level of the signals in two of the three channels e.g. the red and blue channels, without affecting the D.C. level of signals in the third channel e.g. the green channel. In Fig. 1, red, green and blue colour-component signals are applied as inputs I 1 , I 2  and I 3  to three separate amplifiers 1, 2 and 3, in the red, green and blue channels respectively. The amplifiers may be D.C. coupled and a D.C. bias applied between terminal T and earth to bias-control terminals T 1 , T 2  and T 3  of the three amplifiers. A potentiometer RV 1  is connected between the terminals associated with the red and blue channels, the slider of which is connected through a resistor R 5  to earth. With the slider of the tint control potentiometer RV 1  in the centre of its range of adjustment correct colour rendering is achieved. As the slider is moved towards point A the bias applied to the red channel amplifier 1 increases the mean amplitude of the current of the CRT beam which gives the red component to the picture. The resistance of the potentiometer is large compared with the other resistances, and this results in a negligible change in the bias applied to the blue channel (D.C. level in the blue channel) as the slider is moved towards point A. By moving the slider towards point B the mean amplitude of the beam current giving the blue component of the picture is increased, the magnitude of the colour variation being determined by the value of the resistor R 5 . The D.C. level in the green channel and all signal amplitudes remain constant throughout adjustment of the tint control. The potentiometer may have a non-linear characteristic, Fig. 2 (not shown), and its centre point may be directly and permanently connected to earth, Fig. 3 (not shown). If the amplifiers are A.C. coupled, the tint control is then applied to vary the D.C. levels to which the signals are clamped.
Patent GB-540587-A (GB)
Abstract: 540,587. Chemical apparatus. WINGFOOT CORPORATION. May 14, 1940, No. 8661. Convention date, Aug. 8, 1939. [Class 1 (i)] [Also in Group IV] In a process for preparing 2-mercaptoarylthiazoles by a reaction in which the main portion of the mixtures of reactants is liquid and in which substantial quantities of by-product gases are formed, the reactants are continuously introduced into the reaction system and the reaction is carried progressively towards completion in a series of steps, the products and byproducts of each step being mixed before subjecting them to the next step, and the final product being drawn off continuously. In the arrangement shown in Fig. 1, a mixture of aniline, carbon disulphide and sulphur is fed continuously to a heated reaction vessel 1 through a pipe 2 passing to the bottom of the vessel. When the liquid reaches the lower end of the pipe 3 the pipe is sealed off and by-product gases and unreacted carbon disulphide vapour collect in the upper part of the vessel until the pressure is sufficient to force the liquid up the pipe 3 and into a second reaction vessel 2. The lower end of the pipe 3 is thus exposed and the gases are vented into the vessel 4. The liquid and gases are thus alternatively transferred from vessel 3 to vessel 4, ensuring highly efficient mixing. and the process is repeated in vessel 4 and in subsequent reaction vessels. The products are finally separated and recovered in a separator 7, from which the gases are drawn off at 8 and the liquids (molten 2-mercaptobenzothiazole) at 9. In a modified arrangement, the reaction vessels comprise a number of chambers one above the other in a single unit, the chambers being connected by pipes.
Patent GB-1455246-A (GB)
Title: Method of securing and removing a closure fitting into or out  from a bunghole collar of a cask
IPC: B25B13/00
Filed: 1972-11-23
Abstract: 1455246 Securing threaded closures to threaded bungholes of casks GRUNDY (TEDDINGTON) Ltd 7 Feb 1974 [23 Nov 1972] 54226/72 Heading B3N [Also in Division B8] A method of securing a closure fitting having an externally screw-threaded housing 12 provided with a top surface 14, and an extractor tube 11, which is provided with a top surface 16 and a spring loaded ring seal 15, to casks and like liquid containers having internally screwthreaded collar 10, consists in starting screw thread engagement of the fitting in the collar 10 manually, and then applying pressure to the top surface of the fitting by a friction pad (not shown) which is rotated on the axis of the fitting to turn the fitting until its top surface is co-planar with or below the top surface of the collar 10. The collar 10 includes a shoulder 17 to limit the downward movement of the closure fitting. The liquid can be extracted by applying gas pressure through a dispenser head which is adapted to engage on the collar 10 and which comprises a tubular plunger the lower end of which bears on the top surface of the seal 15 and a manually operable lever whereby, in use, movement of the lever moves the seal 15 down to broach the outlet to allow the entry of the gas thereby allowing the liquid to be extracted through the tube 11, its head 16 and finally through an outlet in the dispenser head.
Patent GB-549653-A (GB)
Abstract: 549,653. Knitting-machines. HOLMES, H. H., WIDDOWSON, A. H., and WILDT & CO., Ltd. July 2, 1941, No. 8332. [Class 74 (ii)] A machine having two or more yarn guides 9, 13 is provided with a cutting device 35 common to all the guides and disposed between the guides and the needles. Trapping mechanism is provided at a point to the rear of the feeding ends or throats of the guides instead of between the guides and the needles so that when a guide is inoperative the yarn projects freely from its feeding end. The yarn guides are made so that they can deflect or yield laterally and a device 18 having notches 18a is provided so that as guides, other than a centrally arranged guide 11, are moved to operative position they are cammed laterally so as to assume the inward position of the central guide. The yarn trapping mechanism may comprise a pivotedcatch member which allows free running of the yarn in the forward' direction only, or may be in the form of a roller mounted in an inclined slot. Alternatively it may comprise cymbals 27 pressed together by a spring and arranged to be separated by a lever 31 when the guide is moved into operative position. The cutting device comprises a fixed member and either a pivoted or slidable cutting member.
Patent GB-1418643-A (GB)
Title: Storage battery cases
IPC: H01M50/112
Filed: 1972-11-29
Abstract: 1418643 Moulding battery casings GLOBE-UNION Inc 29 Nov 1972 [9 Dec 1971] 55123/72 Heading B5A [Also in Division H1] A thin-walled storage battery case of a polyolefin has at the junctions of its side and end walls, and over a significant portion of the height of the case, corners having a thickness less than that of the adjacent parts of the walls. Fig. 3 shows a section where the outer radius and inner radius of a corner differ by, e.g. 20% more than the thickness of walls 34, 38. Fig. 7 (not shown) depicts a corner where the inner face has plane portions only. The construction reduces bowing of the walls and, together with the moulding method used, increases impact resistance at the corners. Polypropylene is the preferred material and desirably contains some filler or a small quantity of ethylene-propylene copolymer. Other features of a particular ease shown in Fig. 1 are the mud rails 46 and the strengthening ribs 48 which extend up the intercell partitions. The polypropylene cover 18 has guides 44 formed therewith to locate the walls and partitions for sealing by thermoplastic welding. Fig. 6 shows part of an injection moulding assembly for making the case, the dimensions of the core 66 (part only shown) and mould being made such as to give the reduced thickness portions of the corners. At the stage shown a case has been formed with walls 34, base 50, and partitions 42 and the core 66 partially withdrawn (along 78). The core is movably mounted on the mould closure member 86 and the next stage of removing the core from the mould involves the retraction of the closure member 86 (along line 88), carrying the core 66 with it, and the virtually simultaneous removal (along line 82) of the side plate 82. During the moulding operation the core and side plates are cooled by fluid flowing in ducts 76, 84, the core being operated with a linear temperature gradient running from 120- 140 F. at the bottom to 80-100 F. at the part in contact with the upper edges of the core walls. The side blocks are operated at 80-100 F. The location of the sprues 68 (with associated heaters 74) and general design of the mould ensures that over most of the height the polypropylene reaches the reduced thickness parts of the corners along each wall in horizontal directions.
Patent GB-553162-A (GB)
Abstract: 553,162. Lavatory basins. SLATER (STOKE), Ltd., J., and MAYLAND, J. Nov. 1, 1941, No. 14106. [Class 26] In an island ablution fountain of the type comprising a trough with a centre column having provision at the top for a water discharge in the form of an umbrella spray or individual sprays, the centre column and its head are separate from and form an outer casing for the water supply fittings and the head is formed as a detachable member, the sprays being fed from a supply conduit inside the column. The hollow column 5 of glazed fireclay is received in a socket 4 formed in a hole 3 in the bottom of a trough 1. A waste fitting 6 having an annular flange 7 is secured against the lower side of the trough and is provided with a discharge outlet 8. Fitting above in a sleeve 10 in the part 6 is a water supply pipe I provided at its top with a valve 12, from the lower portion 16 of which radiates a tube 13 to which is connected a tube 14 which passes through a radial slot 17 and is connected to an umbrella spray ring 15 supported on an annular rib 23 on the column 11. A cover head 19 is received in the elongated portion 18 of the valve body, and is provided with recess 21 and a skirt 22, and is secured in position by a nut 25 screwed on the valve. In a modification, the water is fed from above by a pipe which passes into the head and is connected to a distributing box inside the column 11 and provided with a number of pipes extending outside the column and provided with valves.
Patent GB-1327486-A (GB)
Title: Colour electrophotographic process
IPC: G03G13/01
Filed: 1970-11-24
Abstract: 1327486 Electro-photography RANK XEROX Ltd 24 Nov 1970 [1 Dec 1969] 55854/70 Heading G2H In a superimposed multi-colour electrophotographic process in which the steps of uniform charging and imagewise exposure are applied to photo-conductive material already bearing a toner image, a uniform charge of the desired polarity, producing a differential polarity in the toner image areas is first applied, whereafter a uniform charge of the opposite polarity is applied, before or after exposure, to remove the differential polarity.
Patent GB-1249952-A (GB)
Title: Production of ingots having changes in cross-section along their lengths
IPC: C22B9/18
Filed: 1969-11-14
Abstract: 1,249,952. Continuous casting; electroslag refining. BOHLER & CO. A.G. GEB. 14 Nov., 1969 [15 Nov., 1968], No. 55858/69. Heading B3F. Castings having varying cross-sections or dimensions along their length are prepared by an electroslag refining process, by successively fusing a consumable electrode 40 into a series of vertically superimposed cooled moulds 10, 20, 30. The first mould 10 rests on a copper base plate 82 and the electrode 40 is fused into a molten slag blanket inside the mould. The mould 10 is raised on a column 14 until the required length of casting is built up and the upper part of mould 10 meets the lower part of a further mould 20 of greater cross-section. A further section of the casting is built up by fusing the electrode into the mould 20 whilst raising the mould. Finally, a further casting section is built up by a mould 30. After the metal has solidified in each mould cooling can be retarded, by passing hot water through the mould coolant chambers 13, 23, 33. If the moulds are split then they can be opened to retard casting cooling. If desired, casting cooling can be slowed by surrounding the casting with a heat-insulating material which may be heated.