baber/WOPTO huggingface dataset:
Patent GB-443669-A (GB)
Title: Process for the manufacture of hydro-silicate bound moulded bodies
IPC: C04B28/18
Filed: 1935-05-08
Abstract: Moulded bodies such as paving and other tiles, pipes, culverts, paving and kerb stones, steps, &c. are prepared from an aggregate which comprises a binding substance which is a mixture of a calcareous material or materials, e.g. burnt or hydraulic lime, Portland cement or slag cement, and a material or materials containing silicic acid, e.g. ground sand or minerals, clay, kaolin, or infusorial earth, one or both components of this binding substance being in substantially colloidal form, and a coarser material such as gravel, sand or stone, the mixture being prepared with an excess of water and the forming being effected by centrifugal action, or shaking or vibration whereby excess water is eliminated, the bodies being then subjected to hydrothermal treatment, e.g. steam induration.  The binding substance may consist of 15-60 per cent of Portland cement and 85-40 per cent of finely ground sand or stone. The strength of the bodies may be increased and the time of induration reduced by addition of chlorides or calcium salts. Calcium chloride and other hygroscopic salts may be included to prevent evaporation before induration.  Crude or refined sugar may be added to improve the plasticity of the mass.  The additional substances may be included in small quantities, e.g. 0,5-5 per cent by weight of the binding substance.  Specifications 239,576 and 267,001, [both in Class 87 (ii)], are referred to.
Patent GB-135683-A (GB)
IPC: E06C1/16
Abstract: 135,683. Jones, E. Jan. 9, 1919. Ladders; joints, carpenters' &c.-Step-ladders of the lattice type &c. are provided at the upper and lower ends of the back legs with plates or brackets 14, Fig. 4, and 22, Fig. 8, respectively, which support the cross-stays 12, 13 and carry, in the case of the upper bracket, the sliding struts 15 which engage with the front parts 10 of the ladder, and, in the case of the lower bracket, the bolts or pivots 24 of the stays 25, each lower bracket being also made in the form of a socket for receiving and enclosing the lower ends of the back legs and preventing wear and spliting thereof. The brackets are formed by binding sheet metal in the manner shown in Figs. 4 and 8, and are applied to the back legs in the manner shown in Figs. 2 and 6, being suitably secured in position by screws &c.
Patent GB-1392443-A (GB)
Title: Electrical contact brush assemblies
IPC: H01R39/26
Filed: 1971-05-07
Abstract: 1392443 Electrical contact brushes MORGANITE CARBON Ltd 1 May 1972 [7 May 1971 16 June 1971] 13608/71 and 28182/71 Heading H2A In an electrical contact brush assembly 1 comprising an electrically conductive brush body 11 e.g. of electrographite having a bottom face 12 constructed to contact a conductor, e.g. a commutator or a slip ring, and an antivibration brush head 14 formed from a resiliently-deformable pad, e.g. of synthetic rubber in contact with a top face 13 of the brush body, the mechanical impedance of the head 14 is between two thirds and twice that of the body 11 to provide between the two an interface which has a low resistance to incident compressive elastic waves and, to promote the absorbtion of the waves by the head, the latter has therein slots 20 of different depths from a top face 17 of the head towards a bottom face 15 thereof. The faces 13, 15 may be bonded together by a thin adhesive layer 18, rigid insulating cap 19 may rest on the face 17 to bear brush holder spring thrust, and in a split brush assembly (21), Fig. 3 a heavy top (28) rests on the cap and is permanently attached to the brush holder spring. The Specification describes suitable density and impedance values for the brush body and head.
Patent GB-456155-A (GB)
Title: Improvements in mechanism for reciprocating the trough or tray of a magnetic separator or a screen
IPC: B07B1/30
Filed: 1935-05-09
Abstract: 456,155. Converting rotary into reciprocating motion. THOMPSON, H. H., DAVIES, A. E., and HUTTER, H. E., Magnet Works, Lombard Street, Birmingham. May 9, 1935, No. 13629. [Class 80 (iii)] [See also Group II] Mechanism for reciprocating the trough or tray of a magnetic separator or a screen comprises a rotating shaft arranged with its axis parallel to the tray or screen and carrying on an eccentric portion of the shaft the inner race of a roller bearing, the outer race of which is guided between spaced bearing surface extending at right angles to the direction of reciprocation of the tray &c. Secured to the underside of the tray a of a magnetic separator is one flange of a transversely extending angle plate j, the other flange extending downwardly at right angles to the tray. The outer race t of a roller bearing engages a bearing plate k secured to the vertical flange of the plate j and also a bearing plate l mounted on a frame m pivoted at n to the plate j, the lower ends of the flange of the plate j and the frame m being connected by a spring p. The inner race a of the bearing is mounted on an eccentric portion of a shaft q which is rotatably mounted in bearings r on the frame c of the separator. Cups or covers u, v may be fitted to the shaft as shown in Fig. 2, in which two roller bearings are shown.
Patent GB-683886-A (GB)
Title: Improvements in reservoir pens
IPC: B43K7/035
Filed: 1949-05-23
Abstract: 683,886. Reservoir pens. WAGNER, E. V. June 29, 1950. [May 23, 1949; July 18, 1949 ; Sept. 16, 1949] Nos. 13722/49, 18836/49 and 23905/49. Class 146 (iii). In a ball-point pen the ink is prevented from leaking at the open end of the reservoir tube d by the provision of a plug having at least one waist h and two enlarged cylindrical portions h<SP>1</SP>, h<SP>2</SP> which are a sliding fit in the tube, and by inserting a liquid, such as castor oil, to seal the annular gap between the portion h2 and the tube. When a plug having several waists and enlarged portions is provided, the peripheries of all the latter portions, except that in contact with the ink, are coated with oil &c. The plug is buoyant in the ink, and can be recessed at the ink-contacting end. The reservoir tube d is preferably closed at the back and, an air hole i provided therein. The writing tip e is a tight fit in the front end of the tube d, and is a frictional fit in the end of the barrel a, the tube and tip being removable as a unit from the barrel. Dimensions of suitable reservoir. tubes and plugs are given. According to the second Provisional Specification, the plug may comprise two cylindrical pieces of polyethylene interconnected by a thin wire stem.
Patent GB-1167266-A (GB)
Title: Improvements in Semiconductors
Inventor: WEINSTEIN HAROLD
IPC: H01L21/00
Filed: 1967-03-23
Abstract: 1,167,266. Semi-conductor devices. INTERNATIONAL RECTIFIER CORP. 23 March, 1967 [12 May, 1966], No. 13779/67. Heading H1K. A junction of non-uniform depth is formed in a semi-conductor wafer by polishing selected regions of one face of the wafer and roughening others and then diffusing a conductivity determining impurity into the treated face. In the embodiment the faces of an N-type wafer are polished and the peripheral area on one face roughened by sandblasting using alumina or silicon carbide grit. The wafer is then heated at 1250‹ C. for 2 hours in a flow of vaporised boron anhydride to give the junction configuration shown in Fig. 5. After lapping the upper face to re-expose the N-type material in the central area contacts are applied to P layer on the lower face and to the re-exposed N material and the surrounding P-type zone on the upper face to form a transistor.
Patent GB-735141-A (GB)
Title: Improvements in or relating to a power operated conveyor-type loading machine
IPC: A01D87/00
Filed: 1953-05-18
Abstract: 735,141. Conveyer-loaders. ATHEY PRODUCTS CORPORATION. May 18, 1953 [May 23, 1952], No. 13865/53. Class 78 (1). In a power-operated loader an elevating conveyer 20 is overlapped at its receiving end by a feeding conveyer 26 of the same width which feeds material along a channel 66 having side walls 68, 69 converging towards the elevating conveyer from a width greater than that of the feeding conveyer, and side conveyers 63 are provided for moving material across the ends of the side walls remote from the elevatng conveyer and towards the channel. As shown the elevating conveyer 20 consists of an endless belt 22 provided with cleats 38 while the feeding conveyer comprises push-plates 50. The framework of the elevating conveyer 20 is pivotally mounted at its upper end between a pair of A-frames 16 and is adjustably supported at its lower end by means not shown. Conveyer 26 in turn is pivotally mounted by means of a pair of arms 27 carrying its sprocket shafts 44, 47 on the frame of conveyer 20 while the feeding channel 66 is fixed to the frame of conveyer 20. The arms 27 are resiliently and adjustably supported by the combination on each arm of a spring 54 and a fluid-pressure cylinder 53 which can be supplied with varying amounts of fluid under pressure. The piston 55 of cylinder 53 is pivotally mounted on the chassis 10 of the loader while cylinder 53 supports the spring 54 between it and a flange 52 on arm 27. Arms 27 are steadied laterally by guide rollers 61. Thus adjustments can be made for the lump size of the material while large lumps lift the conveyer 26 upwardly relative to the channel 66 as they pass. The push-plates 50 of conveyer 26 are curved to keep the material in the middle of the channel 66. The side conveyers 63 consist of helical blades carried on spokes 64 on extensions of the sprocket shaft 44 of conveyer 26 so arranged as to feed material inwardly towards the channel along a curved plate 29 secured across the channel 66. The blades 63 extend into the channel 66 where the latter is wider than conveyer 26 to ease the material around the corners where plate 29 meets the channel 66. A cutting blade 30 is fixed across the front of plate 29, while a pair of end-plates 32 are positioned at the ends of plate 29 to extend forwardly or rearwardly according to whether a hole 77 or 78 is used for mounting, this reversing including changing the plates from one side to the other. As shown, when plates 32 extend forwardly, material being gathered from windrows is guided into the paths of the auger and push-plate conveyers while plates 32 are fixed in rearwardlyextending position when loading from stockpiles to prevent material passing under the front wheels 13 of the loader which are steerable. The conveyers 20, 26, 63 are driven by enclosed chains from a motor 14 which also drives the rear wheels 12 of the loader.
Patent GB-1223778-A (GB)
Title: Wide band antenna for satellite navigation and related problems
Inventor: SMITH VALOR CLARK
IPC: H01Q5/371
Filed: 1969-03-17
Abstract: 1,223,778. Aerials. CHU ASSOCIATES Inc. 17 March, 1969, No. 13905/69. Heading H4A. A wide-band omni-directional aerial with an upwardly directed radiation diagram comprises a cylindrical conductive member 1, 1<SP>1</SP> having a length corresponding to a half-wavelength at the low frequency end of said band. Current suppressing means 4 are disposed along said member at a distance from one end corresponding to a half-wavelength at the high frequency end of said band. A ground plane comprising co-planar conductors 7, 7 and 7<SP>1</SP>, 71 of different lengths provides diametric paths corresponding to half-wavelengths at the low and high frequency ends of said band. A slot 3 is defined between the ground plane and the aforesaid one end of the member 1, 1<SP>1</SP> and power at different frequencies within said band is fed across it. As described, the member 1, 1<SP>1</SP> has a section 1<SP>1</SP> which is smaller in diameter than another section 1. The means 4 comprises a plurality of conductive stubs which conically surround the upper portion of the section 1. Radially extending conductors 7, 7 and 7<SP>1</SP>, 7<SP>1</SP> are carried on a ring 5 insulatingly spaced from the end of the section 1. Power is fed across the slot 3 by a coaxial line 2, 2<SP>1</SP>, an impedance matching element 6 being provided.
Patent GB-901198-A (GB)
Title: Improvements in fertilizers
IPC: C05D9/02
Filed: 1961-04-18
Abstract: Sphalenite, preferably in the form of fines in the range of 10-65 mesh per inch obtained in the flotation process in the treatment of dolomite is added preferably in amount of 2-8% by weight to phosphate fertilizers.  The zinc suphide is slowly converted in the soil to soluble zinc salts which can be absorbed by plants.
Patent GB-528596-A (GB)
Title: Improvements in and relating to paper or like bags or sacks
IPC: B65D30/18
Filed: 1939-05-10
Abstract: 528,596. Paper &c. bags or sacks. ROBINSON, F. G., and PAPER SACKS, Ltd. May 10, 1939, No. 13939. [Class 94 (ii)] To facilitate opening, flat paper bags or sacks have one margin 2 of the open mouth turned down inward or outward and flattened on the wall to which it belongs, in order to separate the edges 9, 10 of the two walls in the longitudinal direction of the bag.
Patent GB-702877-A (GB)
Title: Method of electrolytically etching tantalum
IPC: H01G9/055
Filed: 1952-06-03
Abstract: 702,877. Electrolytic etching ; electric condensers. BRITISH THOMSON-HOUSTON CO., Ltd. June 3, 1952 [July 11, 1951], No. 13966/52. Addition to 691,509. Classes 37 and 41 A tantalum surface is etched to provide a higher effective surface area when employed as a capacitor electrode by' treatment as anode in an electrolyte comprising methanol, a trace of water and sufficient ammonium bromide dissolved therein to permit passage of a current. By the selection of ammonium bromide as the halide component the permissible water content is less critical and may be in the range of 6,000-135,000 parts per million. Ammonium bromide may be used together with calcium chloride; a suitable bath contains by weight 3.5 per cent. calcium chloride, 3.5 per cent. ammonium bromide and 93 per cent. methanol together with 5.9-135 millilitres of water per litre of solution. Etch ratios as high as 6.5 may be obtained.
Patent GB-378858-A (GB)
Title: Improvements in the production of artificial materials, by wet spinning processes
IPC: D01F2/28
Filed: 1931-05-12
Abstract: In wet-spinning processes for the production of artificial silk, films, &c., from solutions of organic derivatives of cellulose, coagulation is effected in a coagulating medium containing relatively high concentrations of the lower aliphatic acid esters of di- or polyhydric alcohols, other than mono- or di-acetin, or their partial ethers (or also, according to the Provisional Specification, of the ethers of polyhydric alcohols, such as mono-ethyl and methyl-ethers of ethylene glycol).  The di- or polyhydric alcohol derivations may be in part contained in the spinning solution.  In a modification of the process, artificial silk, films, &c., obtained by wet-spinning processes, are treated immediately after setting with relatively high concentrations of these same derivatives.  Suitable derivatives mentioned are glycol mono- and di-acetate, methyl glycol monoacetate, and other esters, particularly monocarboxylic esters, of glycol and its alkyl substitution products.  For example, the coagulating bath may contain an aqueous solution of methyl or ethyl glycol monoacetate of 38-40 per cent concentration or glycol monoacetate of 45 per cent concentration.  The spinning solution may contain any suitable solvent or latent solvent, or non-solvents such as mineral oils, olive oil, or castor oil. Other high boiling solvents, swelling agents, or plasticizers, p  and also dispensed liquid or solid substances may be present in the solution.  The coagulating medium may contain any suitable non-solvents or solvents, and also if desired, substances such as salts, sugars, and the like, capable of diminishing the solubility of any solvent present in the non-solvent coagulating agent. Specifications 332,187, 338,490, [both in Class 2 (ii), Cellulose &c.], 340,437, 341,148, 341,897, 343,062, 346,678, 346,793, 362,939, 366,110, 371,343, and 375,424 are referred to.  The Provisional Specification refers also to Specifications 177,868 and 179,234, [both in Class 2 (ii), Cellulose &c.].
Patent GB-217413-A (GB)
Title: New or improved sectional heel and toe protectors for boots and shoes
IPC: A43C13/02
Filed: 1923-05-28
Abstract: 217,413. Lewis, W. H. May 28. 1923. Countersunk tips ; heel and sole irons. - Sectional protectors of metal, rubber, or other suitable material for the heels and toes of shoes are characterized in that the abutting ends of the sections are cut away or inwardly inclined towards a point a<3>, Fig. 1, midway in the radius of the curved central section a. The side sections b, Figs. 2 and 4, are of wedge-shape in crosssection, Fig. 3, and all the sections have tapered holes b<1> for securing screws or nails. The central section may be used with one side section only. The Provisional Specification states that the adjacent ends of the side and toe sections may be stepped.
Patent GB-679537-A (GB)
Title: Improvements in or relating to the condensation of vaporised halides
IPC: C22B34/12
Filed: 1948-05-24
Abstract: A vaporous mixture of halides issuing from a reduction furnace, containing a halide which condenses from the gaseous or vapour phase directly to the solid phase, and a more volatile halide, is treated for the separation of the halides, by first cooling the mixture, and then subjecting it, at a temperature of 300-600 DEG C to heat exchange with a vaporizable liquid distributed in sufficient quantity to effect complete vaporization thereof with simultaneous complete condensation of the solid phase component in a dry state, and the latter is separated from the residual gaseous mixture.  The vaporous mixture may be obtained by the reaction of chlorine at 600-1100 DEG C on say ilmenite, rutile &c. in the presence of carbon, and contains primarily titanium and iron chlorides with small amounts of silicon and aluminium chlorides. The process is also applicable to the separation of iron chloride from tin and silicon chlorides, or of chlorides of chromium, zirconium and aluminium from chlorides of tin, silicon, sulphur &c.  A suitable vaporizable liquid is the more volatile halide present, e.g. titanium tetrachloride, but other liquids, e.g. carbon tetrachloride, gasoline, toluene, may be used. The cooling liquid may be distributed by discharging it on to a rapidly rotating horizontal disc or discs, or through spray nozzles. The condensed solid, e.g. ferric, chloride is separated in a cyclone separator or glass cloth filter, and the gases whilst still at a temperature above the dew point of the liquid halide, say 140-180 DEG C in the case of titanium tetrachloride, are passed to a surface condenser for the liquid.  Specification 550,750 is referred to.
Patent GB-1135439-A (GB)
Title: Recovery of elemental sulphur from sulphide ores
Inventor: ELLIOTT ROBERT A
IPC: C01B17/06
Filed: 1966-03-30
Abstract: 1,135,439. Elemental sulphur from sulphide ores. ATKINS, HATCH & ASSOCIATES Ltd. 29 March, 1967 [30 March, 1966], No. 14068/66. Heading C1A. Elemental sulphur is recovered from pyritic bearing ores by stagewise fluidized bed treatment in which the ore is partially decomposed in a first fluidized bed treatment zone to volatilize the labile sulphur atom in the ore and then the partially decomposed ore is fluidized bed roasted in a subsequent zone to produce hot SO 2 -containing gases and an iron oxide calcine characterized by feeding to the first zone hydrocarbon reducing agent preferably directly into the body of the ore undergoing treatment, and the hot SO 2 -containing gases generated in the subsequent roasting zone whereby owing to the combustion of the hydrocarbon in the first zone, reducing agents are produced effective to reduce the SO 2  to elemental sulphur. The reducing agent may be a finely divided carbonaceous material, a liquid hydrocarbon fuel or natural gas. The temperature of the solids in the volatilizing zone is maintained in the range between 600‹ and 900‹ C., and in the roasting zone between 800‹ and 1000‹ C. The two-stage process represented in Fig. 1 contains a volatilizing zone "V" in the upper shell 10 and a roasting zone "R" in the lower shell 12. Each shell has a fluidized bed of the material being treated, namely 30 and 32 in shells 10 and 12, respectively, and is supported on a gaspermeable plate 22, provided with a plurality of orifices 24. The solids and fluidizing gases move generally countercurrently, the former moving downwardly through "V" and "R" via conduit 64, and the latter moving upwardly through "R" and "V" via inlet 38. Ore is introduced into bed 30 through conduit 62, and reducing agent is introduced through conduit 68. The hot SO 2 -containing gases from "R" are introduced into "V" at a velocity sufficient to fluidize bed 30, and contribute a portion of the heat necessary to maintain the temperature of the solids so that the labile sulphur in the ore is volatilized. Entrained fines in the SO 2  gas from "R" are removed in cyclone 34, and entrained fines in the exhaust gas from "V" are removed in cyclone 54. Bed 32, comprising the partially desulphurized ore, is fluidized by air and preheated air introduced respectively through valved conduits 46 and 72. Three and four stage fluidized bed reactors are also described.
Patent GB-253130-A (GB)
Title: Improvements relating to the manufacture of detonating fuses and the like
IPC: B21K1/00
Filed: 1926-06-03
Abstract: 253,130. Etablissements Davey Bickford, Smith, et Cie. June 4, 1925, [Convention date]. Blasting detonators. - Relates to detonating tubes manufactured by reducing the diameter of the tube after it has been loaded with the detonating material. According to the invention, the reduction of diameter is produced by hammering instead of by rolling or drawing as heretofore.
Patent GB-635014-A (GB)
Title: Improvements in and relating to filters for coupling carrier transmission equipment to power lines
IPC: H04B3/56
Filed: 1947-05-27
Abstract: 635,014. Insulators. GENERAL ELECTRIC CO., Ltd., ROWLANDS, R. O., and WESTELL, E. P. L. May 27,1947, No. 14079. [Class 36] [Also in Group XXXIX] An insulator for connecting a power line to high-frequency equipment has a closed compartment containing a condenser C1 and an open-ended extension containing an inductance L1, these impedance elements being part of a band-pass filter for the high-frequency currents. The whole is cemented into a ring R clamped to the flanged open neck of an oil-filled apparatus tank. Alternatively the inductance may be mounted inside the closed compartment with the condenser.
Patent GB-480518-A (GB)
Title: Improvements in solar and sidereal clocks
IPC: G04B19/22
Filed: 1936-05-19
Abstract: 480,518. Astronomical clocks. DEE, J. May 19,1936, No. 14120. [Class 139] [Also in Group XIX] Apparatus for continuously showing mean solar and sidereal time and the aspect of the stars has also chart surfaces for solving various astronomical and navigational problems such as great circle courses. A fixed base or dial has plotted on it in polar co-ordinates, i.e. polar distance against hour angle, a set of great circles about one diameter of the sphere. The boundary circle is divided into 360‹ and 24 hours and a centrally pivoted arm called the " observer's meridian " has a vernier to further subdivide the boundary. A sliding vernier is also fitted on the radial arm to subdivide the maximum latitude readings of the plotted great circles. A transparent chart with stars plotted to the same co-ordinates is driven in sidereal time round the centre point and a diametral hand representing at one end the right ascension of the mean sun is driven in mean time. A further series of transparent charts or " templates " is provided each with one of the great circle plots so that any spherical triangle may be formed, so that the various problems may be solved by suitably positioning the superposed charts. Examples are given of working out the great circle course between London and New York and of finding the times and positions of points on a great circle with chosen stars in the Zenith.