baber/WOPTO huggingface dataset:
Patent GB-1517264-A (GB)
Title: Treatment of iron(ii)chloride
IPC: C01G49/06
Filed: 1977-03-18
Abstract: 1517264 Iron oxide and chlorine KRONOS TITAN-GmbH 18 March 1977 [19 March 1976] 11651/77 Heading C1A Iron (III) oxide and chlorine are obtained from iron (II) containing chloride mixtures, especially the by-products from the chlorination of titanium containing raw materials such as ilmenite, by reacting iron (II) chloride at 500-800C with sufficient oxygen or oxygen containing gas to form iron (III) oxide and iron (III) chloride insufficient to liberate any substantial amount of chlorine from the iron chloride(s), separating the solid and gaseous products, reacting at least a part of the iron (III) chloride contained in the separated gaseous products with further oxygen or oxygen containing gas at a temperature of 600-800C and continuing the reaction while reducing the temperature to less than 600C and then separating iron (III) oxide from the gaseous products. The process may be carried at an atmospheric or super atmospheric pressure. The oxygen or oxygen containing gas used in the first oxidation stage is preferably preheated and this may be achieved by burning coke separated from the gas phase. In the second stage the temperature is preferably lowered to 350C. The gas mixture separated from the iron (III) oxide in the final stage may be recycled directly to chlorinate further titanium containing material.
Patent GB-887697-A (GB)
Title: Improvements in pilot operated valves for relieving hydraulic pressure
IPC: F16K17/10
Filed: 1958-04-12
Abstract: 887,697. Fluid-pressure servomotor control systems. GAULDIE, K. April 10, 1959 [April 12, 1958],No. 11692/58. Class 135. A pilot-operated valve for relieving hydraulic pressure from an inlet 2 to an outlet 21 in a valve body 1 comprises, in this body, a pressure relief valve 3 and a pilot valve 12 for initiating opening and closing movements of the relief valve in accordance with corresponding movements of the pilot valve, means such as a spring 22 urging the pilot valve to its closed position, pressure-operated means such as a piston 13 integral with the pilot valve urging it to open position, a passage 14 communicating with this piston 13, an opening 15 connecting the passage 14 with the hydraulic fluid under pressure, and one-way valve 16 controlling the opening 15 to allow the pressure fluid to reach the piston 13 and restrict flow in the reverse direction so as to retard closing of the pilot valve subsequent to a fall in the hydraulic pressure. A chamber 4 above a piston of the relief valve is in communication with the inlet 2 through a restricted passage 9, 10 in this valve. This chambet is relieved via passages 19, 20 through the pilot valve in open position of the latter to allow the relief valve to open. A hand-control valve 24 connects the chamber 4 with the outlet 21 to enable independent manual control of the relief valve.
Patent GB-285283-A (GB)
Title: Cutter holder for mechanical velvet cutting apparatus
IPC: D03D39/24
Filed: 1927-05-02
Abstract: 285,283. Weber, W. May 2, 1927. Pile, cutting.-The cutter 10 is carried by a slide 3 which moves rectilinearly against the direct action of spring 7 and carries a lug 4 which engages a curved lever 5 to open or close contacts K<1>, K<2> to stop the machine whenever the resistance to the cutter varies from normal. The spring can be adjusted by a block 9 and screw 8.
Patent GB-976532-A (GB)
Title: Sulphonamides
IPC: C07D333/16
Filed: 1961-03-30
Abstract: The invention comprises sulphonamides of the formula <FORM:0976532/C1/1> and their acid addition salts, wherein A is a methylene or ethylene group and B is a nitrogen, oxygen or sulphur containing heterocyclic group attached to A through one of its carbon atoms, and the preparation of these compounds by reacting a 3-sulphamoyl-4-halo-benzoyl chloride with a carbinol B-A-OH and converting to a salt such as the hydrochloride, hydrobromide, sulphate, citrate, oxalate, tartrate, succinate, maleate, acetate, benzoate, hexahydrobenzoate, methanesulphanate, fumarate, gallate or hydroiodide, if desired.  Examples describe tetra-hydrofuryl-, tetrahydropyranyl-, pyridyl-(21, 31 and 41)-, quinolyl-(21 and 41)- and thienyl -(21)-methyl esters and the 11-methyl-piperidyl-(21)-ethyl esters of the 3-sulphamoyl-4-chloro (and 4-fluoro)-benzoic acids.  3-Sulphamoyl-4-fluoro-benzoyl chloride used as a starting material is made by treating 4-fluorobenzoic acid with chlorosulphonic acid, treating the resulting 3-chlorosulphonyl-4-fluoro-benzoic acid with ammonia to give the corresponding 3-sulphamoyl compound and converting to the benzoyl chloride by reaction with thionyl chloride  Pharmaceutical preparation having diuretic and saliuretic activity comprise the above compounds of the invention in admixture with an inert carrier.
Patent GB-727537-A (GB)
Title: Improvements in or relating to seed-planting implements
IPC: A01C7/18
Filed: 1953-04-28
Abstract: 727,537. Seed-sowing machines. NATIONAL DIE-CASTING CO. (PROPRIETARY), Ltd. April 28, 1953 [July 21, 1952], No. 11740/53. Class 6 (1). A seed-sowing machine comprises seed and fertilizer containers 7, 6 respectively mounted on a frame 2 connected by parallel members 3, 4 to a raisable tool bar 1 connected to a tractor. The seed is fed from the container 7 by means of a disc 33 rotating adjacent to a sloping wall 31 of the container which also has a sloping bottom. Seeds are picked up in holes 34 in the disc 33 and drop through an aperture 32 into a tube 29 leading to a furrow opening share 10. The disc 33 is removably attached to a centre part 36 provided with agitating vanes 37 and mounted on a shaft 38 and held in position by a nut 39. The bottom of the container is provided with a seed emptying opening closed by a sliding door. Fertilizer is fed down an opening 51, Fig. 6, by means of a shallow disc 47 provided with openings 48 and mounted on a shaft 72 so that the outer face is parallel to the container bottom at the discharge opening 51. A plate 52 is mounted above the opening 51 to prevent gravitational flow through the opening. The discharge opening is adjustable by means of a notched slide 56. The container 6 is hinged to a bottom portion 50, bent marginal edges 67 on the container co-operating with flanges 68 on the bottom 50. An opening is provided to empty the container and is provided with a pivoted door supported by a resilient strut. The shafts 38, 72 are connected to a gear-box which is driven by chain and sprocket gearing 22, 25, 26 from a landwheel 8 mounted on a frame 9 pivoted on the frame 2 and adjusted by a strut 18. Oblique. slotted stays 11 are pivotally mounted on the member 3 and within the slot of each stay a strut 12 is disposed which is pivoted to the lower member 4..The lower end 14 of the strut 12 forms a stop which engages the bottom end 15 of the stay. Upward deflection of the members 3, 4 is controlled by the engagement of the headed end 16 of the strut 11 with a compression spring 17 fixed on the stay 11.
Patent GB-513917-A (GB)
Title: Improvements in and relating to the production of cellulose derivatives
IPC: C08B11/20
Filed: 1938-04-19
Abstract: 513,917. Cellulose ethers. DU PONT DE NEMOURS & CO., E. I. April 19, 1938, No. 11746. Convention date, April 15, 1937. [Class 2 (ii)] Soluble cellulose ethers of high viscosity for use as thickening agents are prepared by causing cellulose to react with a monofunctional etherifying agent and with a limited quantity of a bifunctional etherifying agent such as epichlorhydrin to effect substitution by the monofunctional reagent to a degree such as to form a water soluble ether and by the bifunctional reagent to a degree such that the ether contains from 1/5000 to molecular proportions of the bifunctional substituent calculated per C6 unit of the cellulose. The reaction of the cellulose with the mono- and bi-functional reagents may be carried out simultaneously or consecutively in either order, and low substituted cellulose ethers may be employed as starting material. Monofunctional etherifying agents referred to are methyl, ethyl, and butyl chlorides and mixtures thereof, and sodium chloroacetate, while bifunctional reagents include epichlorhydrin, glycerin dichlorhydrin, #-#<1>-dichlorodiethyl ether, ethylene dichloride, xylylene dibromide, trimethylene chloride, w-w-dichlorodipropyl ether, and #-#-dichlorodiethyl sulphide. In examples illustrating the three methods of procedure in which the monoetherification is effected first, simultaneously, and last respectively : (1) epichlorhydrin is added to a 7 per cent solution of water soluble methyl cellulose in dilute caustic soda in proportion of 0.1 mol. of epichlorhydrin per mol. of methyl cellulose ; (2) sulphite cellulose sheets are steeped in a solution of sodium chloroacetate, pressed, shredded with caustic soda solution, epichlorhydrin dissolved in dioxane added, and then more caustic soda and sodium chloroacetate ; after shredding for 18 hours at 25‹C. a product is obtained giving much more viscous solutions than sodium cellulose glycollate prepared without epichlorhydrin; (3) sulphite cellulose is steeped in caustic soda and shredded with a solution of glycerin dichlorhydrin in alcohol for four hours ; sodium chloroacetate is then added (in proportion of 90 parts per 1 part of glycerin dichlorohydrin) and shredding continued for six hours.
Patent GB-953007-A (GB)
Title: Improvements in slow-wave structures
IPC: H01J23/24
Filed: 1961-03-30
Abstract: 953,007. Velocity-modulated beam tubes. SIEMENS & HALSKE A.G. March 30, 1961 [April 1, 1960], No. 11771/61. Heading H1D. A delay line for a travelling wave tube comprises two coplanar members having axially staggered series of projections extending towards, but spaced from, a common axis. In the construction shown in Fig. 10, the projections 3 have the same width as the spacing between the projections. Fig. 11 shows a cross-section of a delay line in which four sets of toothed members are arranged side-by-side. These constructions have low-pass characteristics. Band-pass characteristics may be obtained by enclosing the structure in a circular waveguide with two pairs of axially-staggered projections arranged in orthogonal planes. In a modification of this arrangement one set of opposed teeth is replaced by a pair of plain ridges 6, Figs. 8, 9. The teeth may taper in a direction towards the common axis.
Patent GB-542969-A (GB)
Title: Improvements in and relating to closures for containers for granular substances, particularly applicable to ammunition cartridges
IPC: F42B33/00
Filed: 1940-07-16
Abstract: 542,969. Wads for cartridges; inserting. WILKERSON, S. H. July 16, 1940, No. 11777. [Class 9 (i)] A method of closuring cartridge cases consists in attaching an oversize wad 15 to the end of a hand-operated plunger 2, pushing the plunger with the wad attached into position in the cartridge case, and then releasing and pressing down an inner plunger 10 to release the wad from the outer plunger. The base of the outer plunger is provided with pins 4 to receive the wad and a spring 3 is interposed between the outer and inner plungers, so that the outer plunger is raised as soon as it is released from the wad. The wad is formed of four sheets of cardboard faced with muslin secured to it by shellac and to allow for easy insertion and retention after insertion, the edge of the wad is serrated at 16.
Patent GB-938018-A (GB)
Title: Improvements in or relating to composite cages for needle or roller bearings
IPC: F16C33/46
Filed: 1961-03-30
Abstract: 938,018. Bearings &C. W. SCHAEFFLER, and G. SCHAEFFLER, [trading as INDUSTRIEWERK SCHAEFFLER oHG]. March 30, 1961 [April 1, 1960 (2)], No. 11802/61. Class 12 (1). A composite cage for a roller or needle bearing comprises a comb-type cage 1 in which tongues or webs 4 integral with end-ring 5 are positioned circumferentially and extend longitudinally from said ring. A companion ring 2 is fitted at the open side of the cage 1 which has conically shaped centring studs 7 which locate in pockets 6 formed between adjacent tongues. The pockets 6 so formed provide retaining means radially and axially for rollers or needles 3. Other embodiments of the arrangement include multiple assemblies of cages and rings to provide a number of rings of axially spaced rollers, variation in the means of interconnecting companion rings and comb cages and the circumferential displacement of consecutive rings of rollers. The construction of the cage assemblies may be from pressure moulded plastic, plasticcovered metal frame, metal or sintered materials.
Patent GB-772562-A (GB)
Title: Improvements in bottle wrappers
IPC: B65D65/02
Filed: 1955-04-25
Abstract: 772,562. Bottle wrappers. TEESDALE, G. H. April 26, 1955 [April 25, 1955], No. 11824/55. Class 94(1). A bottle wrapper comprises two substantially semi-cylindrical portions 2 of resilient waterproofed paper joined together at their longitudinal edges by strips 1 of elastic material so that the wrapper may be stretched over a bottle.
Patent GB-736205-A (GB)
Title: Improvements in and relating to motor vehicle spring suspensions
IPC: B60G21/045
Filed: 1952-05-09
Abstract: 736,205. Spring suspensions. ALLISON, W. D. May 9, 1952, No. 11843/52. Class 108 (2). [Also in Group XXXVII] In a vehicle structure including a frame and two longitudinally-spaced front and rear wheels at each side of the frame, spring means extend. ing longitudinally of the frame at each side thereof for yieldingly supporting the frame on the wheels, lever means connected to the frame and to the spring means adjacent each of the wheels and responsive to vertical displacement thereof to deflect the spring means and thereby impart vertical forces in corresponding directions to opposite ends of the frame, the lever means for the front and rear wheels at each side of the frame extend from the spring means in opposed directions, and compensating spring means is connected to a pair of the wheels for varying the spring resistance at one end of the frame relative to the opposite end of the frame to compensate for relative changes in elevation at opposite ends of the frame. In the arrangement shown in which front wheels 39 are each supported by upper and lower wishbone links 40, 41 and in which rear wheels 61 are carried on a through axle 60 swingably connected to chassis frame members 63 by torque arms 58, torsion-bar suspension springs 43 are connected between each lower link 41 and the arm 58 on that side of the vehicle. The rear ends of the torsion springs 43 are secured to the outer end of a lever 54 which is rotatably carried by a frame member, the inner end of the lever being connected to the arm 58 through a connecting bolt 57 and interposed resilient grommets. Additional torsion bars 43b extend from the lower links 41 and are rigidly connected to a cross frame member 49. Further torsion bars 53 extending from the levers 54 are each mounted at their forward ends within a coupling collar on a threaded end member 66 of a turnbuckle shaft 67. The shaft 67 is rotatable by means of worm and pinion gearing by a reversible electric motor 70 carried by the vehicle frame to vary the spring resistance at the rear of the vehicle consequent upon variation in vehicle load. Actuation of the motor 70 is controlled by a dash-pot switch mechahism, [see Group XXXVII].
Patent GB-527743-A (GB)
Title: Improvements relating to winches and similar apparatus
IPC: B66D1/74
Filed: 1939-04-19
Abstract: 527,743. Winch handles. HOOK, O., and DEWRANCE & CO., Ltd. April 19, 1939, No. 11850. [Class 78 (v)] The handle 21 of a winch is adapted to be stored in the hollow shaft 2 about which the drum 1 rotates. The drum may ride on ball, roller, or needle bearings 9, 10 and is held against the cable pull by a stationary ratchet wheel 14 engaged by spring pressed pawls 16. The handle 21 is pivoted at 22 to a piston 18 sliding in the shaft 2, and when withdrawn can be turned down to engage between any two of a ring of castellations 30 in a crown 26 running on ball-bearings 25 on the stationary shaft 2 and connected to the drum 1 through pawls 28. A knob 23 prevents the handle from falling through the shaft 2, and rings 24, 31 prevent detachment of the handle and of the crown 26 respectivly.
Patent GB-985722-A (GB)
Title: Improved method and apparatus for the production of thermoplastic sheet material
IPC: B29C48/10
Filed: 1962-03-28
Abstract: 985,722. Film making apparatus. V. FLAX. March 26, 1963 [March 28, 1962], No. 11852/62. Heading B5B. An apparatus for producing flat pliable sheets and films of organic thermoplastic material comprises a heated extruder 4 from which is continuously extruded a tubular film 5 which is drawn through a water cooled sizing die 6, the water discharged from which flows over the cooled and sized tubular film 51 into a tray 9 to cool the tubular film further and solidify it. The cooled and solidified tubular film is then flattened by passage through a pair of draw rolls 10, 11 in the usual manner. Thereafter, instead of being reeled up in flattened form in the usual manner, the tubing is led over a mandrel 12 and the portion of the tubular film or tubing 52 between the rolls 10, 11 and the mandrel 12 is inflated to render its cross-section circular by introducing pressurized air into the tubing 52 through a pipe 13. The mandrel may have a torpedo or bullet shape instead of the double conical shape shown in the drawing and may be hollow and provided with one or more apertures in its forward part for the introduction of air into the tubing 52. Immediately beyond the part of it which is of maximum cross-section, the mandrel carries a knife 14 which slits the tubing longitudinally as it is drawn over the mandrel by a second pair of draw rolls 17, 18. The slit tubing is developed from tubular form to flat strip by drawing it under a horizontal plate 15, mounted on the pipe 13. Wings 16 projecting laterally from the rear corners of this plate ensure complete outward turning of the cut edge of the tubular film. The resulting continuous strip of flat film is drawn upwards around part of roll 53 and is wound up into a reel 19 the core of which is supported at its ends on pinions 20 which rest in and mesh with stationary inclined racks 21. The reel bears by gravity against the surface of roll 17, which drives it frictionally, the reel moving progressively up the racks as its diameter increases. The section 52 of the tubing or tubular film is inflated to a sufficient degree to cause it to be stretched circumferentially sufficiently to eliminate permanently the folds or creases produced by the flattening of the tubing 51 between the rolls 10, 11. The portion 52 of the tubing is not stretched longitudinally, but is allowed to hang in a gentle curve (Fig. 1).
Patent GB-999436-A (GB)
Title: Refractory and method of making same
IPC: C04B35/01
Filed: 1963-03-26
Abstract: A fired basic shape is obtained by mixing 20-60% silica free - 3 + 65 mesh chrome ore with 80-40% - 65 mesh magnesia of at least 95% purity, shaping and firing to at least 3050 DEG  F. until the constituents appear as a heterogeneous solid solution of chrome spinel and magnesia crystals free of silicate filming. The shape is crushed, sized to - 3 + 65 mesh, and at least 50% thereof mixed with powdered chrome ore containing less than 6% silica and/or - 65 mesh high purity magnesia, the mixture being shaped and fired at 2800-3050 DEG  F.
Patent GB-682619-A (GB)
Title: Improvements in and relating to concrete and glass structural elements
IPC: E04C2/54
Filed: 1950-05-12
Abstract: 682,619. Concrete and glass structural elements. LENSCRETE, Ltd., and GOUGH, W. F. May 10, 1951 [May 12, 1950], No. 11961/50. Class 20(iii) A concrete and glass structural element comprises a plurality of panels 24-27, Fig. 4, each panel having one or more glass blocks 10 set in plain or reinforced unstressed concrete 14, Fig. 3, the panels being spaced apart to receive between them a concrete filling 32 which is compressively stressed by pre-tensioned or post-tensioned metal rods 34 accommodated in vertical and horizontal grooves 17, 18 in the panels. In an alternative construction, Figs. 8, 9, panels 47, 50 are formed having out-turned flanges 40 to form with adjacent panels a mould for the concrete filling, two reinforcement wires being provided and grooves 38 being omitted if desired. Each panel has only one glass block which is fixed in a groove 39 e.g. by bitumen: Specification 678,972 is referred to.
Patent GB-1038093-A (GB)
Title: Improvements in and relating to chairs
IPC: A47C1/032
Filed: 1963-05-08
Abstract: 1,038,093. Reclining chairs. GENERAL STEEL PRODUCTS Inc. May 8, 1963 [May 9, 1962], No. 18135/63. Heading A4J. A self balancing reclining chair fixture 36 comprises a base link 38 affixable to a base member 14 of a chair and a seat link 50 affixable to a seat side frame member 22. A bell crank 54 is pivoted at 42 to base link 38 and at 60 to seat link 50. A rear link 46 is pivoted at 44 to base link 38 and at 48 to seat link 50. Links 54, 46 support seat link 50 on base link 38 for swinging movement between normal and reclined positions of the chair. The limit of the normal and reclined positions is defined by a pin 62 on seat link 50 engaging in a slot 64 in bell crank 54. Seat link 50 is pivoted at 48 to a back link 66. A control link 70 is pivoted at 72 to back link 66 and at 74 to bell crank 54. When the back link 66 is pivoted rearwardly about pivot 48 link 70 will swing seat link 50 upwardly and forwardly. The position of pivot 74 is such that the pressure of an occupant of a chair against the back will balance the weight of the occupant on the seat so as to maintain a static balance of the chair throughout its range of movements.
Patent GB-1235824-A (GB)
Title: Electromechanical filter
Inventor: SEWERYN ZYGMUNT
IPC: H03H9/50
Filed: 1970-03-13
Abstract: 1,235,824. Electromechanical filters. STANDARD TELEPHONES & CABLES Ltd. 13 March, 1970, No. 12176/70. Heading H3U. A filter comprises two similar plate resonators 1, 2 carrying piezoelectric layers 5 and vibrating in the flexural mode about nodal lines 3a, 3b and 4a, 4b. Couplers 6a, 6b acting as compliances connect the resonators and are located intermediate the nodal lines 3a, 4a and 3b, 4b, respectively. The distance N 1 A between each coupler 6 and the nodal lines 3a, 3b is the same; similarly, the distance N 1 B between each coupler 6 and the nodal lines 4a, 4b is the same. The distance N 1 A may be equal to or different from the distance N 1 B. The lateral displacement of the nodal lines 3a, 3b relatively to the lines 4a, 4b and the intermediate location of the couplers 6 enables a low coupling coefficient to be obtained for producing a filter having a very narrow bandwidth. The underlying theory is described.
Patent GB-291433-A (GB)
Title: Improved process for concentrating volatile aliphatic acids
IPC: C07C51/487
Filed: 1928-04-26
Abstract: 291,433. Holzverkohlungs-Industrie Akt.-Ges. June 2, 1927, [Convention date]. Acetic and other aliphatic acids.-Aqueous acetic acid or other volatile aliphatic acid is vaporized and treated with a salt capable of combining with the acid to form an acid salt, such as potassium or sodium acetate or alkali or alkaline earth salts, or mixtures of them, the acid salt formed being then treated to recover or utilize the acid. When pyroligneous acid is used it may receive a preliminary treatment to remove tar. The vapour of the aqueous acid is passed up a column into which concentrated potassium acetate solution is sprayed in countercurrent. The liquor collected at the bottom is cooled, for instance in strongly-cooled jigging- troughs, and the separated salt, if desired, after drying, is decomposed by hot air or in vacuo for instance at about 200‹ C., or may be utilized direct, for instance for the production of esters. The neutral acetate and the mother liquor may be used again. Alternatively, especially when sodium salts are present, the solution or solution mixture resulting from the absorption of the acid mav be heated to distil off the acid without first isolating the acid salt. Specification 281,827 is referred to.