baber/WOPTO huggingface dataset:
Patent GB-445587-A (GB)
Title: Improvements in the manufacture of pigments
IPC: C11B1/12
Filed: 1934-10-13
Abstract: In the manufacture of zinc sulphide, cadmium sulphide, zinc selenide, cadmium selenide, lithopone, and other zinc sulphide pigments, the crude pigment, obtained by double decomposition below 100 DEG  C., is heated in the presence of liquid water to a temperature of 250--370 DEG  C., there being also present additional quantities of salts, acids, oxidation or reduction agents, or colloids.  The fastness to light of zinc sulphide pigments is increased by the addition of cobalt or phosphoric acid compounds such as cobalt sulphate or a phosphate.  In an example, a solution of zinc sulphate and chloride is treated with barium sulphide.  The mixture is heated to 330 DEG C., cooled, filtered, washed, dried, and ground.  The pigment has high covering power. The addition of cobalt sulphate to the mixture before the heat treatment results in a pigment of high stability to light.  In another example cadmium carbonate is treated with sodium sulphide solution containing selenium.  The precipitate is washed, and then heated under pressure with sodium sulphide solution.  A bright yellow-red pigment is obtained.  If the sodium sulphide solution contains sodium carbonate, a bluish-red pigment is obtained. Specification 445,588 is referred to.
Patent GB-1309458-A (GB)
Title: Cartridge-belt feed systems for automatic weapons
IPC: F42B39/08
Filed: 1970-06-17
Abstract: 1309458 Cartridge belt feeding BREVETS AERO-MECANIQUES SA 17 June 1970 [14 July 1969] 29375/70 Heading F3C In an automatic weapon belted ammunition is fed to an insertion aperture 1a in an ammunition bearer 1. The links 3 of the belt are formed with two ammunition retaining claws 3a, 3b the free ends of the claws being provided with inclined tabs e the outer surfaces of which when the link is supporting a round 2 of ammunition above the insertion aperture co-operate with bevelled surfaces s 1  of the lip of the insertion aperture. In the construction shown two pairs of inclined surfaces are provided, the forward pair being of a greater height than the rearward pair to hold the link so that the round of ammunition is inclined to the path of movement of a reciprocating breech bolt 4 which urges the round 2 into the chamber of the weapon. The central portion of each link is formed with an arch (Fig. 2, not shown) and a hook 3d opposed to each other so that several links may be hingedly connected together. The claws 3a, 3b expand radially upon extraction of the cartridge.
Patent GB-504926-A (GB)
Title: Improvements in or relating to electrical condensers
IPC: H01G4/224
Filed: 1937-10-27
Abstract: 504,926. Condensers. HUNT, Ltd., A. H., end FISHER, J. H. Oct. 27, 1937, Nos. 29380/37 and 2309 /38. [Class 37] One or more of the flexible leads to a condenser having a moulded outer casing are supported up to the point of emergence. In the case of a pro-formed casing as at 10, Fig. 2, one flexible lead 17 is passed through a hole in one wall while the other 16 rests in a slot 12 in the opposite wall and is backed by a stiffening plate 18 carried by the condenser unit. The casing is then filled with thermoplastic material. In Fig. 6 each lead 16, 17 has a support 18, carried by the condenser, and through the perforated outer end of which the lead passes. Plastic material 20 is then moulded about the whole unit. Adjustment of the capacity of the unit may be effected by first covering it with a thin preliminary layer of a molten plastic material, connecting the condenser to a measuring instrument and reducing the capacity to a desired value by scraping away the plastic layer and a sufficient part of a metallized electrode and then completing the sealing. For this purpose an outer insulating layer 13 of the unit may be of smaller area so as to render accessible the electrode surface beneath it.
Patent GB-243299-A (GB)
Title: Improvements in or relating to a process for improving the mechanical properties of cast metal
IPC: B22D27/08
Filed: 1924-12-08
Abstract: 243,299. Buchalo, S., and Haefeli, A. Nov. 20, 1924, [Convention date]. Casting-machines.-The mechanical properties of cast metal are stated to be improved by controlling the crystallization of the cooling mass by imparting thereto direct or transmitted vibrations. Reference has been directed by the Comptroller to Specifications 412/13, 121,201, and 147,624.
Patent GB-540166-A (GB)
Title: Improvements in or relating to hydraulic machinery
IPC: B30B15/18
Filed: 1939-11-06
Abstract: 540,166. Hydraulic presses. ERNST, W. Nov. 6, 1939, No. 29488. Convention date, July 24. [Class 69 (ii)] A working valve for permitting controlled release of pressure from the main cylinder of a press or the like upon reversal of the plunger following completion of the pressing stroke comprises a release-valve and a byepass valve which work in bores having interconnected chambers, and are hydraulically controlled to release the pressure gradually, and to byepass momentarily the plunger-returning circuit respectively. The valve 9 shown in Figs. 1 and 3 comprises a casing 10 formed with bores 11, 12 containing a releasevalve 13 provided with pistons 16, 17, 18, and a byepass valve 14 provided with a piston 59, and a head 61 which normally shuts off a chamber 64 connecting the bores. A chamber 25 in the bore 11 communicates through a passage 48 with a chamber 51 in the bore 12. Another chamber 31 in the bore 11 communicates with a needle-valve 36 which is adjustable by means of a hand-wheel 44. The press-cylinder 73 is connected by pipes 82, 85 to a reversible pump 84, branches 27, 29 from these pipes being connected to the chamber 25 and bore 11. The chamber 64 is connected by a pipe 79 to the operating-chamber 78 of a surge-valve 77. When the pump is adjusted to deliver through the pipe 82, the plunger 74 is depressed, and the surge-valve opens automatically to admit liquid from a tank 72. When the plunger is resisted, the surge-valve closes, pressure is transmitted through the pipe 27, the valve 14 is shifted, and the head 61 opens communication between the chamber 64 and an exhaust chamber 53. When the pump-circuit is reversed, pressure transmitted through the pipe 29 shifts the valve 13 in opposition to a spring 21, the chambers 25, 31 are put in communication, and the pressure liquid in the main cylinder escapes gradually and without shock through the needlevalve 36. The pump-discharge is momentarily byepassed through the pipe 29 and chambers 64, 53 until the pressure in the main cylinder has been completely released. Thereupon, the valve 14 returns, the chamber 64 is closed by the head 61, and pressure for returning the plunger 74 builds up in the pipe 85. The bore 11 is formed with ports 45, 46 for discharging liquid that leaks past the pistons 17, 18.
Patent GB-209233-A (GB)
Title: Improvements in or relating to springs suitable for use with motor cars and other vehicles
IPC: F16F1/24
Filed: 1922-10-28
Abstract: 209,233. Hadfield, Sir R. A., and Clerke, A. B. H. Oct. 28, 1922. Laminar springs are formed with each leaf, except the master leaf, provided with longitudinal ribs b towards the outer edges of the upper surface which ribs fit corresponding grooves c on the undersur. face of the leaf above to provide a shallow longitudinal trough or space along which lubricating oil can spread readily under the movement of the spring, the interengaging ribs and grooves serving to prevent escape of oil. In addition, central longitudinal grooves fare prvided cmmunicating with staggered apertures e. Lubricating cups d communicating with the grooves f are provided.
Patent GB-339704-A (GB)
Title: An improved device for playing games
IPC: A63B59/02
Filed: 1929-09-30
Abstract: 339,704. Palmer, M. E. Sept. 30, 1929. Projecting and catching appliances. - In a racket having pockets A in the striking face C, the pockets are each edged with indiarubber B or other elastic material so as to retain a ball therein .while other balls are being caught. The striking face may be formed of netting or of a combina-. tion of gut and a woven fabric. The pockets are of different colours and the balls are coloured correspondingly.
Patent GB-174416-A (GB)
Title: Improvements in wall and like constructions and blocks therefor
IPC: E04B2/28
Filed: 1920-10-20
Abstract: 174,416. Lee, J. W. Oct. 20, 1920. Building-blocks, special shapes of.-Building- blocks having one face corrugated or curved are arranged to form solid or cavity walls, the thickest part of a block on the outside of the wall being placed opposite to the thinnest part of a block on the inside of the wall. Fig. 4 show the blocks a arranged so as to leave a continuous vertical cavity h, but they may be so arranged that their thickest portions partly overlap, thus giving interrupted cavities from course to course; or again, they may fit closely together to give an interlocked solid wall. Apertures n and end grooves may be provided to accommodate reinforcing-rods p which may be tied together by wires r, or grouting may be cast into the apertures. Indentations or frogs for cement may be arranged at the upper and lower surfaces around the apertures and end grooves. Reference has been directed by the Comptroller to Specification 152,241.
Patent GB-1515151-A (GB)
Title: Tuning structures for microstrip transmission lines
IPC: H05K1/02
Filed: 1975-07-15
Abstract: 1515151 Tuning microstrip lines INTERNATIONAL STANDARD ELECTRIC CORP 15 July 1975 [19 July 1974] 29604/75 Heading H1W A stripline is tuned by means of a member movable perpendicularly to the substrate of the stripline. As shown in cross-section, the stripline comprises a ceramic substrate 1 bearing on opposite surfaces a line 3 and a ground plane 2, the latter being supported by a metallic carrier 4. The line is surrounded by an electromagnetic shield 5 with a closure 9. It is associated with a stub 8 from which it is spaced by a gap 7. The capacitance of the gap is varied by means of a tuning member 6 movable towards and away from the gap. The tuning member may consist of dielectric material or may comprise a metallic element 6 supported by a dielectric stem 10 threaded into the closure member 9. In a modification (Figs. 3, 4, not shown), a threaded tuning member extends through the carrier 4 towards an aperture in the ground plane 2. The part of the line 3 opposite the tuning member is locally increased to a width equal to the diameter of the tuning member.
Patent GB-190326-A (GB)
Title: Improvements in and relating to resilient tires
IPC: B60C7/12
Filed: 1921-11-08
Abstract: 190,326. Golein, M. Nov. 8, 1921. Spring wheels.-A tyre for vehicle wheels consists of a metallic band 13, having cup-shaped recesses 20 on the inner and outer peripheries. The peripheries are coated with rubber 18. Recesses 19 in the cups 20 may be provided to assist in holding the rubber to the metal. Preferably the cups 20 in the outer periphery are staggered with relation to those in the inner periphery.
Patent GB-391450-A (GB)
Title: Improvements in or relating to sliding-clasp fasteners
IPC: A41H37/00
Filed: 1931-10-27
Abstract: 391,450. Fastening boots, wearing- apparel, &c. COLT, G. H., 13, Carden Place, Aberdeen. Oct. 27, 1931, No. 29798. [Classes 17 (ii) and 141.] In a sliding-clasp fastening arrangement applicable generally, the applications to goloshes, Russian boots, corsets, belts, coats, and other wearing-apparel being specified, a short length of fastener A is provided adjacent to the closed end of the main fastener B. The fasteners may be parallel or inclined to one another, and may overlap. A short length of fastener may be provided at each side of the main fastener. The invention is distinguished from a side-byside arrangement of fasteners of equal length. As applied to boots, the short fasteners are applied to slits at the ankle, or the main fastener may be shorter than usual to end above the place at the instep where bending occurs in walking, and the short fastener or fasteners at the ankle along a line where, in the naked foot, little or no movement occurs in walking.
Patent GB-1520762-A (GB)
Title: Hand actuated extrusion device
IPC: B21C23/00
Filed: 1975-07-16
Abstract: 1520762 Extrusion guns LOCTITE CORP 16 July 1975 [17 July 1974] 29814/75 Heading F1R The dog 13 which normally prevents the actuating rod 1 of an extrusion gun from returning when the actuating lever 6 is released, is permitted to float with the rod so that the rod may return by a limited amount to relieve the residual pressure in the gun cylinder when the lever 6 is released.
Patent GB-285996-A (GB)
Title: Improved method of and apparatus for the periodic operation of valves and analogous mechanism
IPC: C10J3/24
Filed: 1926-11-25
Abstract: 285,996. Power-gas Corporation, Ltd., Rambush, N. E., and Harper, C. S. D. Nov. 25, 1926. Motors, controlling.- Valves and like apparatus are opened and closed periodically by electric motors working on a constant-current series system and controlled by rotary master - switches operated in common by an auxiliary constant-speed motor. Each of the valve-motors has automatic brush-rocking means serving for starting and speed-regulation. The invention is described in connection with the valves of a watergas manufacturing plant, each valve being operated by a vertically movable rack driven through a pinion and reduction gearing. The brush-rocking device for starting and speed-regulation, shown in Fig. 3, consists of a series solenoid 19 acting to move the motor brushes 14 out of the neutral line against springs 22, 23 as soon as current is turned on, together with a small tachometer generator 16 energizing a winding 21 in opposition to the series solenoid.
Patent GB-1121083-A (GB)
Title: Sectional lattice structures
IPC: E01D6/00
Filed: 1964-07-27
Abstract: 1,121,083. Building frameworks. H. S. EVANS. 27 July, 1965 [27 July, 1964], No. 29903/64. Heading E1K. Lattice structures for towers, scaffolding or bridges are built up from units of various forms which include a tongue 2 at one end, a slot 4 at the other end and lateral tongues 3, the slot 4 being adapted to accommodate the tongues 2, 3 of other units which are secured by bolts &c. in holes, 5, 7 &c. The slot 4 and the tongues 2, 3 are mounted at the end of arms 11, 13 to form elongated units. Triangular units Figs. 6 and 7 (not shown) are also provided which have arms 11 and 13 and struts 14 (not shown) connecting the tongues 2, 3 together. A connecting unit without arms 2, 3 is also provided.
Patent GB-426813-A (GB)
Title: Improvements in and connected with variable speed gears
IPC: F16D31/04
Filed: 1934-06-22
Abstract: 426,813. Variable-speed and reversing gearing. THOMAS, H., 9, Church Street, and WILLIAMS, D. G., Rhianfa, both in Taff's Well, Cardiff. June 22, 1934, No. 29919 /33. [Class 80 (ii)] Planet pinions 3 carried by a driven member 15 mesh with a sun wheel 2 on a driving shaft 1 and with an annulus 4 which is geared, through an intermediate gear, to a gear pump 7, the inlet and outlet of which are connected by a connected by a conduit 13 controlled by a valve 14. The pump system is automatically replenished with fluid from a reservoir 32 through a non-return valve 31. A gear 29 mounted on the pump spindle through a free-wheel clutch meshes with teeth 30 on the member 15. Thus high and low gears are obtained if the valve 14 is closed and opened respectively. The member 15 is connected to a final driven shaft 19 through reversing gearing controlled by a sleeve 18. If the sleeve is moved to the right, teeth therein engage teeth 20 on the shaft 19 and a coned flange 17 on the sleeve engages a coned portion 16 of the member 15, whereby a direct drive is transmitted. If the sleeve is moved to the left, so as to be held against rotation by pins 27 engaging in holes in a fixed member 28, it moves a coned plate 23, splined on the shaft 19, into engagement with conical friction rollers 24 carried by radial spindles 25 supported by slotted brackets 26 on the member 17, and the rollers into engagement with a coned member 30<a> secured to the member 15, whereby a reverse drive is transmitted. In an intermediate position of the sleeve, no drive is transmitted.
Patent GB-1197562-A (GB)
Title: Improvements in or relating to the Reinforcement of Plastics Sheets or Pipes
Inventor: TANSLEY ANTHONY VICTOR
IPC: C08J5/12
Filed: 1966-07-04
Abstract: 1,197,562. Sheet or pipe with fibrous cladding. STEWARTS & LLOYDS Ltd. 17 July, 1967 [4 July, 1966], No. 30010/66. Heading B5N. [Also in Division F2] A resin-bonded fibrous cladding is affixed to a sheet or pipe of plastics material by an adhesive which remains flowable between the cladding and the sheet or pipe, so that it can flow to seal minor delaminations caused by impact damage. The adhesive may be a natural or synthetic elastomer, e.g. natural rubber or neoprene. The adhesive may be applied to the surface of the sheet or pipe as a solution in a volatile solvent, the solvent being allowed to evaporate before the cladding is applied. Alternatively, the adhesive may be heat-softenable and applied by a hot melt technique. The plastics material may be unplasticized, rigid p.v.c. The cladding may be of glass rovings thoroughly wetted with a thermosetting resin, e.g. a polyester or epoxy resin, and curing is effected after the cladding has been applied to the adhesive-coated plastics material. The surface of the sheet or pipe is cleaned and abraded before applying the adhesive.
Patent GB-688687-A (GB)
Title: Improvements in prestressed reinforced concrete construction
IPC: E04G21/12
Filed: 1949-11-24
Abstract: 688,687. Reinforced concrete, beams, arches. MAUQUOY, J. Nov. 24, 1949 [Nov. 29, 1948], No. 30182/49. Classes 20(i) and 20 (iv) Concrete elements are prestressed by the tensioning of reinforcements disposed outside the concrete, the tension being obtained by deflecting the reinforcements in a direction which is perpendicular both to the lengths of the reinforcements and to the direction of the application of the design load upon the elements. The reinforcements may be anchored at the ends by being embedded in the concrete, or by providing sheaths, in end parts .of the element, in which the wires are anchored by wedges. In Fig. 6, the reinforcement wires 1 are passed around end projections 10 on the element 14, the overlapping ends of the wires being joined together by splicings 9. Alternatively the splicing may be effected by pairs of U-shaped clamps, the bolts of which are alternately vertical and horizontal, to produce undulations in both planes in the clamped wires. The element 14 has spaced protuberances 3 between which is provided the means for deflecting the wires transversely, the means comprising screws and nuts 12, 13 and channelled plates 11 which bear upon and locate the wires 1. The wires may be lubricated at the protuberances 3 by interposed sheets of zinc. As shown, metal U-shaped members 16 are interposed. The element is left in its centering until the prestress is applied. The tensioning-means 11, 12, 13 may be left permanently in the structure, or the wires may be retained in the deflected position by ligatures and the means 11, 12, 13 removed. In Fig. 7, an arch is prestressed by the deflection of wires 1 by means arranged between blocks 3 which are suspended by steel bars 15 the upper ends of which are hooked into the concrete. The lower ends of the bars 15 are screwthreaded and pass through sheaths extending through the blocks 3, the height of the blocks being thereby regulable. The wires are tensioned before the centering is removed. The reinforcements may be encased, subsequently, in concrete, or protected by anti-rust material. If the arch is to support a supplementary load, further reinforcements may be added.
Patent GB-383048-A (GB)
Title: Improvements relating to fastenings for windows
IPC: E05C17/22
Filed: 1931-10-31
Abstract: 383,048. Casement stays. HOPE & SONS, Ltd., H. and RINGROSE, T. H., Halford Works, Smethwick, Staffordshire. Oct. 31, 1931, No. 30230. [Classes 44 and 65 (i).] A casement stay e passes through an aperture in the window frame a so that the window b may be opened outwards without interfering with a wire gauze screen c fixed to the window frame. The stay is notched at f to engage with the edge of the aperture and when the window is open a spring-loaded plunger i presses the stay against that edge. A stop h limits the opening movement of the window. The notches f may be on the underside of the stay. The stay co-operates with a stop g to hold the window closed and may be connected to the lug d by a universal joint. The window is secured in the closed position by a fastener k the end l of which engages a cam surface n on the window. Specification 2686/96, [Class 44, Fastenings, Lock &c.], is referred to.
Patent GB-408896-A (GB)
Title: Method and means for preventing aqueous liquids which come into contact with metals from causing corrosion and/or incrustation or precipitation
IPC: C23F11/10
Filed: 1933-11-01
Abstract: 408,896. Preventing corrosion. NAAMLOOZE VENNOOTSCHAP DE BATAAFSCHE PETROLEUM MAATSCHAPPIJ, 30, Carel van Bylandtlaan, The Hague. Nov. 1, 1933, No. 30382. Convention date, Nov. 28, 1932. [Class 123 (i).] Corrosion of metals in contact with liquids is prevented by the addition to the liquid of a mixture of mineral oil, such as spindle oil, and an alkaline salt of a mineral oil sulphonic acid. The salt is preferably soluble and the mixture is added in the proportions of 15 parts of salt to 81 parts of oil. The concentration of the mixture in the liquid may be from 0.5 to 5 per cent particularly 1.6 per cent.
Patent GB-821789-A (GB)
Title: An arrangement for interpreting indications on a radar screen, especially in ships
IPC: G03B15/00
Filed: 1957-09-30
Abstract: 821,789. Tell-tale apparatus. WILKENSON, E. A. Sept. 30, 1957 [Oct. 11, 1956], No. 30550/57. Classes 97(1) and 98(1) [Also in Group XL(c)]  In a ship-borne radar apparatus positive photographs of the plan position indicator type display on the radar screen are compared with the display a short time after the photographs were taken in order to render the movement of objects readily apparent. In one embodiment film from the magazine 30 is exposed in the camera 29 and brought into contact with positive paper from the magazine 32. The film is developed and printed at 34 and the negative fed out of the camera at 35 while the positive passes into a projector 37. Here the picture is projected either on to a chart table 42 or on to the face of the radar screen 5, this being effected by a mirror 43 mounted on a rotating axle 44 which also carries a shutter 45. In another embodiment, the positive picture is viewed through an eye-piece and superimposed as a virtual image on the display screen which is also viewed through an eye-piece, Fig. 9 (not shown). In another embodiment, two positives are compared by projection in two projectors on to a screen, Fig. 15 (not shown). The two pictures, one of which may be the actual radar screen, may be differently coloured.