baber/WOPTO huggingface dataset:
Patent GB-159934-A (GB)
Title: Improvements in or relating to revolution-time recording mechanism, applicable also to distance recording mechanism in road vehicles
IPC: G01P1/12
Filed: 1919-11-11
Abstract: 159,934. Gibbs, G. J. Nov. 11, 1919. Time-distance and time-revolution recorders.-In apparatus applicable also for recording speed and distance travelled by road-vehicles of the type wherein a scriber passes to and fro along a screw over a rotating drum, a pencil 18 recording on the clock-driven paper cylinder 19 is carried by a nut 7 along a screwed spindle 6. The spindle 6 is revolved by means of one of the spring-actuated pawls 2, 3 engaging with the teeth of the ratchet-wheel 4, to which the spindle is attached. The pawls 2, 3 are pivoted at 5 to the lever 1, which is pivoted at 6 and reciprocated from the machine &c. of which the record is desired by spring connections 22, 23, 24. A reversing-plate 10 fitted with stops 8, 9 and pivoted at 11 to the lever 1 and vibrating with it, keeps one of the pawls 2, 3 out of engagement with the wheel 4 so that the wheel revolves in one direction only. When the nut 7 reaches an end of the screw 6, it touches one of the extensions 16, 17 of the sliding rod 12 and slides the rod so as to put the other one of two eccentric-shaped extension-pieces 14, 15 attached to the rod 12 into engagement with the reversing- plate 10, which then operates the other pawl 2 or 3 so as to reverse the direction of rotation of the ratchet-wheel 4 and the travel of the nut 7 along the screw 6. Stops 20, 21, which may be adjustable, limit the extent of vibration of the lever 1.
Patent GB-1449165-A (GB)
Title: Visual-field testing
IPC: A61B3/024
Filed: 1973-06-12
Abstract: 1449165 Visual field testing NATIONAL RESEARCH DEVELOPMENT CORP 6 June 1974 [12 June 1973] 27901/73 Heading G2J Both eyes are tested simultaneously by presenting a stationary target 19 to one eye and a moveable target 21 to the other eye, the eye-pieces 17 incorporating a prism assembly effective to separate target 21 into two apparent targets one presented to each eye. A single target sighting thus indicates a field defect in one eye. The separation of the target is variable by prism-pins mutually rotatable.
Patent GB-353760-A (GB)
Title: Improvements in or relating to metallic packing for stuffing boxes
IPC: F16J15/28
Filed: 1930-09-18
Abstract: 353,760. Stuffing-boxes. KIESSELBACH, C., 58A, Poppelsdorfer Allee, Bonnon-Rhine, Germany. Sept. 18, 1930, No. 27906. [Class 122 (v).] In two-part metallic packing rings of the type wherein the dividing joints are parallel, adjacent joints a, a<1> of superimposed rings R, R<1>, or said joints prolonged, are arranged to cross. Correct relative position of the rings is maintained by a pin c on one ring, projecting into a recess c<1> in the other. This pin is arranged on a diameter at right-angles to the axis x-x and moves substantially along this diameter to take up wear. Flat or helical springs F retain the elements against the shaft; but these may be replaced by a single helical spring F, Fig. 7, passing through recesses in the ring flanges and thus preventing relative movement. When this spring is used the pins c may be dispensed with.
Patent GB-695301-A (GB)
Title: Improvements in or relating to manufacture of vanillin from lignin
Filed: 1950-11-15
Abstract: <PICT:0695301/IV (b)/1> Lignin and its derivatives are oxidized in aqueous alkaline solution under pressure at an elevated temperature by passing through the solution a mixed gas in fine bubbles containing air diluted with inert gases, the partial pressure of oxygen being less than 6.6 p.s.i.  When using sulphite waste liquors as a source of lignin (preferably after fermentation to remove carbohydrates), these are concentrated to 8-12 per cent solids and 7-12 per cent (e.g. 8 per cent) by weight of caustic soda (or potash) added; a copper catalyst, e.g. 2-4 per cent of the sulphate, may also be included.  The operating temperature is up to 185 DEG  C., e.g. 140-170 DEG  C.  The oxygen partial pressure may be up to 20 p.s.i. before the temperature reaches 100 DEG  C. and is then reduced progressively as the temperature rises.  Preferred conditions are between 0.5 and 6.6 p.s.i. at 100-140 DEG  C. and 0.075-2.5 (or better 1.5) p.s.i. at 140-170 DEG  C.; thus at 165 DEG  C. and 0.5 p.s.i. of oxygen the optimum cooking time is 3 hours. Fig. 1 shows a suitable autoclave 1 for the reaction, air being passed in through pipe 3.  The air issues through holes 6 and is mixed by propeller 19 with steam arising from the liquid.  The mixed gases are sucked in through 20, pass down the hollow shaft 16 and are forced up through the liquid via the hollow cross-piece 18.  In an alternative form, Fig. 4 (not shown), the air and steam are mixed outside the autoclave.  The actual partial pressure of oxygen at any instant depends on the temperature of the liquid and the pressure at which the air is supplied; these may be controlled manually or automatically.  The successive stages of the process at different temperatures may be conducted in different autoclaves.  Examples are given of the process using the apparatus of Fig. 1.  The product is mainly vanillin (as sodium salt), together with vanillic acid, guaiacol, acetovanillone and oxalic acid.  When using sulphite waste liquor obtained from hardwoods, syringic acid and syringaldehyde are also produced.  Specification 607,978 is referred to.
Patent GB-1429425-A (GB)
Title: Continuous process for the production of tetramethylthiuram  disulphide
IPC: C07C333/00
Filed: 1974-06-25
Abstract: 1429425 Tetramethylthiuram disulphide UCB 25 June 1974 28042/74 Heading C2C [Also in Division C1] The invention comprises a continuous process for the production of tetramethylthiuram disulphide, wherein: (1) carbon disulphide, dimethylamine, ammonia and water are reacted under pressure in the molar ratio 1-2 : 1- 1À05 : 1 : 10-20, to give an aqueous solution of ammonium dimethyldithiocarbamate; (2) this solution is oxidized by adding at least one mole of hydrogen peroxide per two moles of ammonium dimethyl-dithiocarbamate and an amount of sulphuric acid such that the pH of the reaction medium is kept within the range from 5 to 7, to give a suspension of solid tetramethylthiuram disulphide in an aqueous solution of ammonium sulphate; (3) the solid tetramethylthiuram disulphide is separated from this suspension by filtration; (4) the aqueous filtrate containing ammonium sulphate is concentrated to the limit of solubility of this salt; (5) crystallized ammonium sulphate is precipitated from the concentrated filtrate by using an amount of gaseous ammonia at most sufficient to cover the requirements of ammonia of stage (1); (6) the crystallized ammonium sulphate is separated by filtration; and (7) the filtrate is recycled to stage (1).
Patent GB-974258-A (GB)
Title: Improvements in lip trimming machines
Inventor: PINEL LEONARD CHARLES
IPC: B27D5/00
Filed: 1962-07-20
Abstract: 974,258. Trimming apparatus. J. K. O. CUTTERS Ltd. July 19, 1963 [July 20, 1962], No. 28081/62. Heading B5L. [Also in Division B3] A machine for trimming the edge of a lipping 2 secured to the edge of a board or other workpiece 1 comprises a cutter 5 which is adapted to be disposed above the lipping and has its depth of cut controlled by an associated shoe 21 in contact with the surface of the workpiece. The workpiece may be a door, panel or other component and the lipping may be of timber or plastic which is to be trimmed to the upper and lower surfaces of the workpiece. The upper and lower edges of the lipping are trimmed by upper and lower cutters 5 mounted on spindles journalled in the ends of casings 9 mounted for pivotal movement about pivots 10 on the machine, the other ends of the casings supporting motors 12 connected by belts 14 to the spindles The upper casing is arranged so that gravity urges the upper cutter towards the workpiece, and a spring 15 is provided to urge the lower cutter upwardly towards the workpiece. Each casing has a rotatably adjustable spindle housing secured in position by a clamp 24 and carrying a shoe 21 which is adjustable about a pivot 22 by a screw 23 to compensate for wear of the cutter and has a flat or curved surface 26 for engaging the surface of the workpiece and inclined surfaces 27 for engaging the leading ends of the workpieces and for preventing chippings and glue fouling the surfaces 26. The spindle assemblies and cutters may be adjusted axially by nuts on the pivots 10. The cutters are prevented from engaging one another in the absence of a workpiece by a stop 28 engageable by the upper cutter casing. Over travel of the cutters towards one another is prevented by adjustable screws. The Provisional Specification refers to an embodiment in which the cutters are mounted in housing guided for up and down movement in vertical guides.
Patent GB-724265-A (GB)
Title: Improvements in shuttlecocks and in the method of manufacture thereof
IPC: A63B67/18
Filed: 1952-11-10
Abstract: 724,265. Shuttlecocks. LASHLEY, C. J. W. Nov. 5, 1953 [Nov. 10, 1952], No. 28255/52. Class 132 (3). The skirt of a shuttlecock has a set of vanes radiating in curved paths in one direction and a set of vanes radiating in curved paths in the reverse direction so as to form a lattice work structure, all the vanes having roots around and near to that part of the skirt adjacent the base. In Fig. 2, vanes 1, 1a are superimposed on vanes 2, 2a and all the vanes are secured to a base 8. A modification (Fig. 8, not shown) has vanes of triangular section supported on flat section vanes. The vanes may all be in the same plane (Fig. 7), the vanes 1 having raised ribs 18 to assist spin of the shuttlecock. Some of the lattice spaces may be wholly filled in or provided with ribs (Fig. 3, not shown,), and in Fig. 4 main vanes 10, 11 are provided with secondary vanes 12, 13. In Fig. 5 the trailing end of the skirt is formed as a fringe. The skirt and base 8 may be formed as one piece and may be of nylon or other plastic. According to the Provisional Specification, the vanes may be straight.
Patent GB-359659-A (GB)
Title: Process for uninterruptedly carrying out the precipitation of heavy metallic azides
IPC: C01B21/08
Filed: 1930-09-22
Abstract: <PICT:0359659/III/1> Lead, silver and other azides; lead picrate and trinitro-resocinate.--A process for the continuous production of crystalline heavy metal azides comprises mixing equivalent quantities of solutions of sodium azide and a heavy metal salt such as lead acetate, agitating to start precipitation, passing the solution over obstructions, intermittently discharging part of the mother lye with the crystals and, in the intervals, discharging excessive mother lye only.  The reagents, supplied in equivalent quantities by pipes 1, 2, are mixed by a mixer 4, the outlet 6 being of such size that the liquid remains in the chamber 3 for a considerable time.  The crystals increase in size as they descend, obstructions 7, and floors 8 being arranged to regulate the time of passage.  Excess of mother lye is discharged by a tubular siphon 12, while the azide crystals and part of the mother lye are intermittently discharged through a pipe 11.  The Specification as open to inspection under Sect. 91 (3) (a) also refers specifically to silver azide, and claims a similar process for preparing salts of lead such as the picrate and trinitroresorcinate.  This subject-matter does not appear in the Specification as accepted.ALSO:<PICT:0359659/IV/1> Lead picrate and trinitroresorcinate.-A process for the continuous production of crystalline heavy metal azides comprises mixing equivalent quantities of solutions of sodium azide and a heavy metal salt such as lead acetate, agitating to start precipitation, passing the solution over obstructions, intermittently discharging part of the mother lye with the crystals and, in the intervals, discharging excessive mother lye only.  The reagents, supplied in equivalent quantities by pipes 1, 2 are mixed by a mixer 4, the outlet 6 being of such size that the liquid remains in the chamber 3 for a considerable time.  The crystals increase in size as they descend, obstructions 7, and floors 8 being arranged to regulate the time of passage.  Excess of mother lye is discharged by a tubular siphon 12, while the azide crystals and part of the mother lye are intermittently discharged through a pipe 11.  The Specification as open to inspection under Sect. 91 (3) (a) claims a similar process for preparing salts of lead such as the picrate and trinitroresorcinate.  This subject-matter does not appear in the Specification as accepted.
Patent GB-389892-A (GB)
Title: Improvements in and relating to moulded insulating masses for electrical purposes
IPC: H01B3/08
Filed: 1931-10-12
Abstract: Moulded insulating masses for electrical purposes are made by mixing powdered, granular or fibrous quartz with glass and moulding under heat and pressure.  The mass is treated at a temperature (600-700 DEG C.) at which the glass becomes plastic but is not melted.  The quartz is dried at 100-120 DEG  C. before use.
Patent GB-280704-A (GB)
Title: Improvements in or relating to machines for removing or extracting dust, kemps, burrs and other foreign substances from textile fibres, fur or the like
IPC: D01G9/10
Filed: 1926-11-11
Abstract: 280,704. Ellis, E. H., Ellis, D., and Ellis, F. Nov. 11, 1926. Cleaners.-A machine for extracting dust, burrs and other foreign substances from fibres, fur, &c. comprises a stationary cylinder 7, the lower half of which is perforated, and a rotating shaft 3 carrying longitudinally disposed bars or rods 6 which move round close to the lower half of the cylinder. The rods 6 mav be inclined to feed forward the material from the inlet 8 to the lower end of the cylinder, which may be inclined or of conical form. A wire or rope with suitable tensioning means may replace the rods 6. The machine may be used to mix fibres in which case only a portion of the lower half of the cylinder is perforated.
Patent GB-965923-A (GB)
Title: Improvements in or relating to accumulators
IPC: H01M10/34
Filed: 1961-08-04
Abstract: 965,923. Batteries. TESLA, NARODNI PODNIK. Aug. 4, 1961 [Aug. 17, 1960], No. 28428/61. Heading H1B. Gassing in sealed alkaline cells is prevented by making the negative electrode more porous than the positive electrode thus increasing the chemical activity of the negative electrode. The ratio of the porosity of the positive electrode to the porosity of the negative electrode is 0.8 or less. The negative electrode may be made of a finer grained material than the positive electrode, or the electrodes may be subjected to different pressures.
Patent GB-512370-A (GB)
Title: Improvements in and relating to lock-nuts
IPC: F16B39/38
Filed: 1938-09-30
Abstract: 512,370. Lock nuts. LUCE, R. W. Sept. 30, 1938, No. 28440. Addition to 510,829. [Class 89 (i)] [Also in Group XXII] A lock nut has a body portion 1, and a smaller portion attached by a bellows 3 the internal surface of which is undercut in a sequence of operations. A cutter 7, Fig. 3, is first used to cut the recess 11, the shoulders 9, 10 cutting the chamfers 12, 13 at the same time. A thinner tool of greater radius next cuts the recess 14, and finally another tool cuts the recess 15. The nut is then tapped, and finally compressed axially to displace the threads of the two portions. The outer surface of the bellows has a tapered section, and the upper part 2 of the nut has a bead projecting radially beyond the inner wall of the bellows.
Patent GB-1270506-A (GB)
Title: Decoder
IPC: H03M7/00
Filed: 1970-06-12
Abstract: 1,270,506. Transistor gating circuits. INTERNATIONAL BUSINESS MACHINES CORP. 12 June, 1970 [16 June, 1969], No. 28503/70. Heading H3T. [Also in Division G4]  A transistorized NOR-circuit produces a predetermined binary output if any one of its circuit components fail. The circuit of Fig. 1b, which produces a negative binary 0 output when any input is a positive binary 1 and a positive binary 1 output when both inputs are negative binary 0, produces a positive binary one output when any one component fails. In another NOR- circuit (Fig. 2b, not shown) where transistors T1 and T2 are in parallel, a negative binary 0 output is produced on circuit failure.
Patent GB-1518678-A (GB)
Title: Water mixer fittings
IPC: F16K11/044
Filed: 1975-07-07
Abstract: 1518678 Valves BARKING BRASSWARE CO Ltd 7 July 1975 28543/75 Heading F2V A mixer fitting has a manually operated diverter valve member 19 biased by spring 32 to a first position in which an outlet 6a is connected to an inlet 2. On operation of a knob 26 a plunger, biased by a spring 22, presses the valve member to a second position in which the inlet 2 is connected to an outlet 4 via spaced holes (not shown) in the wall of a chamber 14. Fluid pressure maintains the valve member in this second position when the knob is released.
Patent GB-349878-A (GB)
Title: Preheater and degasifying plant for steam turbines and steam power units
IPC: F01K7/40
Filed: 1930-09-24
Abstract: 349,878. Feedwater supply systems for steam boilers. MASCHINENFABRIK OERLIKON, Oerlikon, near Zurich, Switzerland. Sept. 24, 1930, No. 28567. Convention date, Oct. 30, 1929. [Classes 64 (i) and 123 (ii).] In preheating and degasefying plants for steam - power units wherein condensate and make-up water from evaporators are heated to a definite temperature in preheaters and then fed to boilers, the circuit including degasefiers wherein the condensate &c. is raised at a definite pressure to boiling temperature to expel the gases, intermediate and high-pressure steam controlled by temperature regulators is used to ensure the degasefier acting effectively at all loads without waste of pressure steam. The condensate pump 3 delivers the condensate through the preheater 4 and an additional preheater 16 to the degasefier 5 wherein a definite temperature of 102‹ under atmospheric pressure prevails. The gases are led off through pipe 15. At maximum load, preheating to boiling temperature takes place in the preheater 4 and none in preheater 16. As the load drops, the exit temperature of the preheater 4 sinks. A temperature regulator A on the degasefier 5 opens pipe 11 to feed intermediate steam from a pipe 10 to bring the condensate to boiling temperature. For starting up, degasefication is ensured by taking live steam from the supply pipe 14 through pipe 13 controlled by a temperature regulator B. The preheater 16 may also be partially utilized at maximum load. The evaporation products may be led to preheater 16 which may be constructionally combined with preheater 4. Surface or contact preheaters may be used.
Patent GB-759274-A (GB)
Title: Therapeutic preparations containing 2-acylamino-5-nitrothiazole
IPC: A61K31/425
Filed: 1953-10-16
Abstract: A preparation for oral administration in the form of a tablet or capsule e.g. gelatin capsule, for the treatment of trichomonas vaginalis vaginitis, contains 2-acylamino-5-nitrothiazole of formula: <FORM:0759274/VI/1> R being an acyl group preferably having up to 10 carbon atoms or being a lauroyl radical e.g. acetyl, propionyl, butyryl, iso-butyryl, caproyl, in intimate admixture with an inert solid diluent e.g. binders, lubricants, and preferably alkaline materials.  The preparation is mixed in a moist condition, granulated, compressed into tablet form and may be coated in gelatin before covering with an enteric coating such as acid-insoluble, alkali-soluble ion exchange resins, high melting fats and waxes e.g. carnauba and beeswax, lipid materials e.g. glyceryl esters of fatty acids, esters of polyhydric compounds e.g. long chain fatty acid partial esters and their oxyalkylene derivatives of hexital anhydrides; resins e.g. gum-mastic, shellac, rosin; fat soluble compounds e.g. abietic acid, bile acids and cholestrol; cellulose derivatives e.g. cellulose nitrate, acetate, phthalate, acetatephthalate; and non-toxic, water-soluble salts of polyvinyl phthalates and phenyl salicylates.  Examples of inert diluents are lactose, dextrose, sucrose, sodium chloride, glycine, kaolin and starch.  Examples of binders are acacia, zein, tragacanth, gelatin, sodium carboxymethyl-cellulose and methyl cellulose.  Examples of lubricants are mineral oils, stearic acid, magnesium and zinc stearate, stearyl alcohol and mono- or poly-glycol esters. Satisfactory alkaline materials are aluminium hydroxide, disodium phosphate, dipotassium phosphate, sodium carbonate and bicarbonate, and alkaline or alkaline earth metal salts of glycine.
Patent GB-1483038-A (GB)
Title: Process for purifying gases produced by the gasification of solid or liquid fossil fuels
IPC: B01D53/46
Filed: 1975-07-08
Abstract: 1483038 Purifying combustible gases METALLGESELLSCHAFT AG 8 July 1975 [10 July 1974] 28783/75 Heading C5E A process for purifying a gas produced by the gasification of a solid or liquid fossil fuel in the presence of steam and/or oxygen under superatmospheric pressure, which process serves to remove catalyst poisons and to desulphurize the gas and provides an exhaust gas rich in hydrogen sulphide, involves indirectly cooling the crude gas to ambient temperature, separating and removing the condensed hydrocarbons from the gas, subsequently scrubbing the gas with water to remove ammonia in a first scrubbing stage, in which the water rate is controlled to be just sufficient to remove the ammonia, scrubbing the gas with an organic solvent having a boiling point of at least 127‹ C. at 1 bar, which solvent is miscible with water and to which sulphur is added, in a second scrubbing stage, the ratio by volume of solvent to gas being controlled in dependence upon the solubility in the solvent of methylmercaptan so that the latter is removed from the gas, subsequently scrubbing the gas in a third scrubbing stage with a scrubbing agent comprising the organic solvent and water, the water content being 5 to 30 mole per cent, whereby hydrogen sulphide and carbon oxysulphide are substantially entirely and selectively removed from the gas, separately regenerating the scrubbing agents from the second and third scrubbing stages and recycling the regenerated scrubbing agents to the second and third scrubbing stages respectively for re-use. Organic solvents: N- methyl pyrrolidone, sulpholane, butyrolactone, morpholine, N-methyl-#-caprolactam or polyglycolether. Sulphur may be added to the scrubbing agent in the second scrubbing stage through the reaction of the hydrogen sulphide contained in the gas leaving the first scrubbing stage with the oxygen which is present, such sulphur addition amounting to from 0À1 to 10 g. per litre of scrubbing liquid. A soluble activator exemplified by 1,2-dimethylimidazole, may be included in the scrubbing liquid for the third scrubbing stage in an amount of 1 to 20% by weight.