baber/WOPTO huggingface dataset:
Patent GB-987331-A (GB)
Title: Improvements in cathode for electrolytic erosion of metal
IPC: B23H5/08
Filed: 1961-05-30
Abstract: A grinding wheel for removing metal from a workpiece both electrolytically and mechanically comprises a dielectric body, e.g. of vitrified Al2O3 or vitreous bonded SiC, permeated by pores having walls coated with electrically conductive material, the coated pores collectively constituting a continuous system which allows electrolyte to be passed from an annular recess in the wheel and through the pores to the wheel surface.  The pore walls may be rendered conductive by evacuating air from the pores, contacting the wheel with a suspension of finely divided silver oxide in a resin carrier, applying pressure to the wheel body and the suspension until the suspension impregnates the wheel, and then heating the wheel to drive off the carrier and decompose the oxide to silver. Instead of the silver oxide suspension, an electrically conductive ink may be used. Fig. 4 shows a wheel 40, a brush 51 supplying current, and a hose 56 supplying electrolyte to a cavity 53 in the wheel.  Fig. 7 shows an alternative form of wheel where the abrasive portion is a cylinder 61 and where electrolyte <PICT:0987331/C6-C7/1> is supplied at 73.  Instead of supplying electrolyte through the pores of a wheel, it may be supplied directly to a wheel surface by a spout. In use, a workpiece may be rough finished electrolytically and thereafter the abrasive grinding may be increased relatively to the electrolytic grinding either by reducing the electrolytic voltage or by increasing the relative speed between the travel of the wheel and the workpiece.  The electrolyte may be a NaCl and H3BO3 solution and may also contain a reagent which will precipitate the deplated metal ions, e.g. HCOONa to precipitate Fe. Alternatively, the metal ions can be separated by passing the electrolyte through a precipitation tank or through an ion separator.  Reference has been directed by the Comptroller to Specification 914,809.
Patent GB-404287-A (GB)
Title: Improvements in or relating to colloidal suspensions suitable for insecticides
IPC: A01N59/10
Filed: 1932-07-09
Abstract: Colloidal suspensions of insoluble silico-fluorides, such as barium silico-fluoride and also of cryolite, which are suitable for use as insecticides, are obtained by agitating a mixture of the silico-fluoride or of cryolite in an aqueous liquid with a protective colloid, such as sulphite lye.  The stability of the suspension is increased if the process is carried out in the presence of a barium salt of a weaker acid than hydrofluosilicic acid, e.g. in the presence of barium carbonate.  The method of preparation of the silico-fluoride influences the crystalline form of the product, certain forms of which are not readily disintegrated.  A suitable method of preparation is by precipitation of hydrofluosilicic acid with barium carbonate, giving a product consisting of small rosette shaped aggregates of acicular crystals.  According to an example, barium silico-fluoride, prepared as described above, is mixed with a proportion of sediment from previous workings, sulphite lye and a small amount of sodium caseinate.  A small quantity of barium carbonate and water are added and the mass kneaded until a stiff homogeneous paste is formed.  Water is then worked into the paste until a thin cream is formed, and this is diluted until it contains about 50 per cent of liquid.
Patent GB-734596-A (GB)
Title: An improved process for washing coal or other granular material
IPC: B03B5/64
Filed: 1952-08-02
Abstract: 734,596. Washing granular materials. NAYLOR, T. R. July 22, 1953 [Aug. 2, 1952], No. 19620/52. Class 82 (2). A free-settling classifier having means for removing the settled solids has the feed material introduced through a launder (i.e. an inclined trough of dimensions such that a stratification of the solid materials occurs in the trough) whose lower end at least, is situated below the liquid level of the classifier. The launder 26 may be of flat U-shape. Buckets are arranged on a spider rotated by a motor 22 and remove the sink product. An overflow trough 15 is provided to take the liquid overflow, the trough discharging through an outlet 17.
Patent GB-1376314-A (GB)
Title: Electrical equipment practice
IPC: H01R13/658
Filed: 1971-06-09
Abstract: 1376314 Component assemblies STANDARD TELEPHONES & CABLES Ltd 1 June 1972 [9 June 1971] 19711/71 Heading H1R [Also in Division H2] Circuit boards are mounted side-by-side in edge connectors 30 fixed between upper and lower (not shown), horizontal rails 40. Signal wires between edge connectors 30 are formed into twisted pairs with earth wires to reduce cross-talk. The earth wires are terminated, close to the corresponding signal wires, on terminals 11 formed by the teeth of metal combs (10, Fig. 1, not shown). The metal combs are embedded in plastics blocks 20 which are fixed to the rails 40 between edge connectors 30 in what would otherwise be empty spaces.
Patent GB-440661-A (GB)
Title: Improved apparatus for introducing solid substances in predetermined amounts into closed vessels
IPC: B65D81/32
Filed: 1934-07-05
Abstract: 440,661. Delivering liquids by gas pressure. JOHNSON, J. Y., 47, Lincoln's Inn Fields, London.-(1. G. Farbenindustrie Akt.-Ges. ; Frankfort-on-Main, Germany) July 5, 1934, No. 19787. [Class 102 (ii)] [See also Group VI] An apparatus for introducing solid gasevolving substances into closed vessels, particularly for introducing definite quantities of solid carbon dioxide into spraying vessels, comprises a sleeve member a secured in the neck of the vessel d and carrying a gate c which is biassed by a spring f to close the lower end of the sleeve. A cup b is arranged to screw into the sleeve a. In use, the desired quantity of solid is placed in the cup, and the latter is screwed into the sleeve, so sealing the vessel d. When the cup is fully screwed down, it engages and opens the gate c, allowing the solid to fall into the vessel d. The sleeve and/or the gate are perforated, so that any residual gas pressure in the vessel d is vented when the cup b is removed to receive a further charge of solid. In a modification, the gate c is opened by a separate member slidable without rotation in the sleeve. In another modification, it is formed as a cone valve, and in another, is opened positively by screw action when the cup b is screwed home. In another modification, it is attached to a cup member slidable in the sleeve.
Patent GB-404880-A (GB)
Title: Improvements relating to change-speed gears
IPC: F16H63/30
Filed: 1933-07-13
Abstract: 404,880. Variable speed gearing. FIAT SOC. ANON., 250, Via Nizza, Turin, Italy. July 13, 1933, No. 19840. Convention date, Oct. 15, 1932. [Class 80 (ii).] Countershaft variable-speed gearing for motor rail-vehicles, having fluid-pressure operated sliding clutch or gear members, of the kind in which each striker-fork 9 or 10 is connected with a rod 11 or 12, operated by a floating-lever 18, pivoted at each end to a piston 33, 34, and on an intermediate pin 17 to the rod 11 or 12, is characterised in that the intermediate pin 17 and the striker-fork 9 or 10 are both carried by the axially-slidable rod 11 or 12. Supply of compressed air to either one cylinder 33 or 34 causes the floating-lever 18 to pivot about its opposite end and move the striker-rod 11 or 12 in one or other direction. After pressure on the piston ceases, the rods are returned to the neutral position by spring- or pressuremeans. In the latter form, Fig. 3, pressure-air constantly acts on the rear faces of the pistons which are of less area than their front faces. In the spring-returned form the central pivotpins 17 of the levers 18 each carry upper arms turning with the levers and connected at their ends to the casing through telescopic links extended by compressed coil-springs. In both forms, all four cylinders are connected through pipes 30 to a multiway cock which connects any one of them to the pressure supply, and all others, or if desired all four, to atmosphere. The striker-rods 11, 12 are interlocked by a conical-ended drift-block 16.
Patent GB-719167-A (GB)
Title: A process for manufacturing chromium treated vaccines
IPC: A61K39/02
Filed: 1952-08-06
Abstract: Stabilized bacterial vaccines of low toxicity, good stability and high antigenicity are obtained by the treatment of aqueous suspensions of living or dead bacteria containing active bacterial antigens with a water-soluble chromium salt.  To destroy the autolytic enzyme without inactivating the antigen, the bacterial suspension is disinfected with, e.g. alcohol, 1 per cent formalin or 0.02 per cent aqueous merthiolate (sodium ethyl mercuri thiosalicylate) before, or simultaneously with the chrome treatment. The chrome treatment is in an acid medium preferably of pH 4 to 6. The pH is regulated by the addition of basic substances, e.g. sodium thiosulphate, sodium carbonate and sodium bicarbonate or by organic or inorganic acids, e.g. sulphuric or hydrochloric.  The toxicity of the product is decreased with increased concentration of chromium salt but the tendency for undesirable local effects at the site of injection is increased. The vaccines may be injected or taken orally. Specified chromium salts are chrome-alum, chromic nitrate, chromium sulphate, chromic chloride, chromous chloride, potassium chromate, potassium bichromate, sodium chromate and sodium bichromate. Examples describe the preparation of the following vaccines (a) Typhoid and Para Typhoid A and B bacillus (b) Depentery (Shig. dysenteriae and others) (c) Whooping Cough (Hemophilus pertussis) (d) Salmonella abortus equi (e) Vibrio cholerae.  Other specified bacteria are Pasturellua pestis, Bact. tularense, Mycobacterium tuberculosis and Brucella.
Patent GB-1103112-A (GB)
Title: Improved modulator circuits
Inventor: MORRIS ARTHUR LANGLEY
IPC: H03K3/57
Filed: 1963-05-20
Abstract: 1,103,112. Pulse generating circuits; delay networks. MINISTER OF TECHNOLOGY. 20 Aug., 1964 [20 May, 1963], No. 19910/63. Headings H3T and H3U. In a pulse generator of the type in which a charged pulse forming network PFN or capacitor is discharged into a load 15 so as to generate a pulse, the discharge is initiated by means of an SCR 21 connected in series with the primary and secondary windings of a saturable transformer so that the SCR current rises relatively slowly until the transformer saturates and the PFN discharges via the saturated primary winding and the SCR. When the SCR 21 is triggered, the discharge current rises slowly until the transformer 13 saturates when the network discharges via transformer 15 giving a pulse the duration of which is determined by the transit time of the network. The inductor 13 may be reset at the end of each pulse by the charging current or, as in Fig. 1 (not shown), by an auxiliary circuit comprising a diode and resistor. An auxiliary bias winding may be included. H3U: delay lines.-Fig. 2 shows the tapped inductor L1 forming the input stage of a suitable delay line comprising further saturable inductors L2, L3.
Patent GB-531826-A (GB)
Title: Improvements in sheet metal utensils for domestic use
IPC: B21D51/34
Filed: 1939-07-08
Abstract: 531,826. Wash-tubs, bowls &c. THORNTON, W. H., and THORNTON, J. L. July 8, 1939, No. 19925. [Class 66] A wash-tub, bowl, or other domestic utensil comprises a plain or corrugated body 2 which is seamed to a hollow base 12, the joint 5 being pressed so as to leave no space at the inner surface 13 of the utensil for foreign matter, and a plain annular member 9 which grips the base 12 and abuts against the joint 5. The utensil is finally immersed in a bath of molten spelter. U.S.A. Specification 1,923,742 is referred to.
Patent GB-125904-A (GB)
Title: An Improved Wrench.
Inventor: SEDGLEY REGINALD FRANCIS
IPC: B25B13/56
Filed: 1918-12-03
Abstract: 125,904. Sedgley, R. F. Dec. 3, 1918. Rigid-jaw wrenches; wrench handles and shanks.-A multiple-socket wrench comprises a bar 1 of hexagonal or other polygonal section bent to form a key portion 2 and a handle portion 3 on which is strung a number of sockets 9 when not in use. The sockets 9 are provided at one end with an aperture corresponding to the section of the bar 1, and at the other end with nut-engaging apertures of different sizes. To use a socket it is removed from the handle and placed on the key 2, being retained thereon frictionally by a spring ball or plunger 7. Stops 4 formed by upsetting the metal of the key 2 form seats for the socket. A spring ball or plunger 8 is provided to prevent the sockets falling off the handle 3.
Patent GB-1108155-A (GB)
Title: Improvements in room heaters
IPC: F28D1/053
Filed: 1964-07-13
Abstract: 1,108,155. Space heaters. D. M. A. MANUEL. 13 July, 1965 [13 July, 1964], No. 19960/64. Heading F4S. A combined convector air heater and heat radiator includes a heat exchanger comprising a plurality of spaced rectangular fins 4; each fin having an aperture through which passes a hot water pipe 2 running adjacent a wall 22, and a perpendicular flange 10 on each of its two vertical edges, the end of each flange being joggled to overlap the flange of the adjacent fin. The pipe is expanded to grip the perimeter of the aperture, which is provided with a belledout lip 8 to abut the adjacent fin. The heater is completed by a housing comprising a metal front member 16 supported by and held in close thermal contact with the fins of the heat exchanger by brackets 20 screwed to wall 22, and a wooden top member 18. Air is heated by convection through the heat exchanger (controlled by flap 44), convection over the front face of member 16, and radiation from member 16.
Patent GB-807625-A (GB)
Title: Means for separating hop leaves from hop flowers and/or stems
IPC: A01D46/02
Filed: 1956-06-28
Abstract: 807,625. Separating apparatus. BROOKES, A E. May 30; 1957 [June 28, 1956], No. 20016/56. Class 117 Apparatus for separating hop leaves from a mixture of detached hop flowers, petals, stems and leaves comprises an elevator 1 feeding the mixture to a conveyer 2 from which it falls past the open side of a suction chamber 3 containing or connected to an adjustably driven fan 4. Supported on rollers 5 and surrounding the chamber is a perforated conveyer 6 having a run 6a extending across the said open side of the chamber so that hop leaves and petals are drawn on to it whilst the flowers and stems are directed by plates 7 and 8 into an adjustable shoot 9. The petals are drawn through the run 6a and pass into a duct 10 leading to an expansion chamber 11 from which the air escanes and the petals settle on a discharge conveyer 12. The conveyer run 6a moves upwardly and carries the leaves upwardly and horizontally and discharges them on to a waste conveyer 13. The latter has a rough surface and the flowers and stems are discharged from shoot 9 on to the inclined conveyer section 13a whereby the flowers roll downwardly on to the conveyer 12 and the stems are carried upwardly to join the leaves dischargel from the conveyer. 6. a baffle 14 cause the main portion of the air drawn into the chamber 3 to pass between the plates 7 and 8 to provide an upward air current which retards the falling rate of the flowers and stems.
Patent GB-1103613-A (GB)
Title: A cartridge magazine for an automatic gun
Inventor: CHRISTIANSSON CARL MAURITZ
IPC: F41A9/64
Filed: 1965-05-12
Abstract: 1,103,613. Cartridge magazines. BOFORS A.B. 12 May, 1965 [13 May, 1964], No. 20079/65. Heading F3C. A cartridge magazine for an automatic gun comprises a compartment 4 for cartridges located in a vertical row one above the other with their longitudinal axes extending horizontally and a cartridge retainer located within the compartment. Each retainer includes at least two retaining arms 8 which are secured to and pivotable with a shaft 7, the arms 8 being urged to a position in which they project into the compartment 4 by a tension spring 9. Each arm 8 extends into a further arm 15 on which is pivotally mounted a spring-loaded catch member 10 having a releasing means 11 and cooperating in its cartridge retaining position with a stationary abutment 14. The operative parts of the releasing means are in the same horizontal plane such that before the cartridge retainer allows a cartridge to pass under its own weight, the cartridge must be in a horizontal position. Cartridges are introduced into the magazine through a door located at the top of each compartment (Fig. 1, not shown).
Patent GB-998936-A (GB)
Title: Improvements in or relating to the production of conjugated diolefines
Inventor: BARCLAY JOHN LYNN
IPC: B01J23/00
Filed: 1963-05-21
Abstract: Conjugated diolefines are prepared by reacting a mono-olefin containing not less than 4 carbon atoms in the vapour phase with molecular oxygen over an oxide composition containing antimony and iron as oxidation catalyst. The oxide composition may be a mixture of the metal oxides or a compound containing both metals, i.e. iron antimonate.  The compositions are prepared (1) by mixing the metal oxides or compounds, e.g. hydroxides, nitrates and basic nitrate which on heating give the oxides, (2) by mixing antimony and iron salts, neutralizing the mixture with ammonia and recovering the precipitate.  Catalyst activity is increased by preheating the oxide composition to 500 DEG  to 1100 DEG  C. and the oxide composition may be on a support, e.g. silica.  Mono-olefine used are butene-1, butene-2, 3-methylbutene-1 and 2-methylbutene-2 and these may be present in amounts of 1% to 25% by volume of the feed gas which may also contain 1 to 21% by volume of oxygen and a diluent, e.g. nitrogen or steam. The reaction takes place at below 550 DEG  C. with a contact time of 1 to 30 seconds.  Sub, normal and superatmospheric pressure are used and fixed and fluid bed reactors are employed.  The products, e.g. butadiene or isoprene may be recovered by solvent extraction or condensation followed by fractionation.  Specification 902,952 is referred to.
Patent GB-949048-A (GB)
Title: Well-type ionisation chamber
Inventor: ENGELMANN JACQUES
IPC: H01J47/02
Filed: 1960-06-08
Abstract: 949,048. lonisation chambers. COMMISSARIAT A L'ENERGIE ATOMIQUE. June 8, 1960 [June 8, 1959], No. 20104/60. Heading H1D. A well-type ionisation chamber has two sub stantially cylindrical coaxial electrodes, and the distance between the electrodes varies along their length and has a minimum value in the central region of the electrodes. In the embodiment, the electrodes 3, 4 carry collars 25, 28, which slide on the electrodes and are clamped by screws 26, 27. The filling may be air or a rare gas, admitted through valve 13.
Patent GB-646932-A (GB)
Title: Improvements in or relating to apparatus for air conditioning
IPC: F25B31/00
Filed: 1947-07-25
Abstract: 646,932. Centrifugal fans. CUMMINGS, W. W. July 25,1947, No. 20117. Convention date, Sept. 20, 1938. [Class 110(i)] [Also in Groups X, XIII and XXXV] Air supplied by a blower 17 to the space to be conditioned is drawn through a duct 15 having means such as a fan 25 for compressing the air during its passage through the duct and forcing it over cooling pipes 28, the air then expanding to its original volume, the fan speed being controlled jointly by the temperature and humidity of the atmosphere in the space to be conditioned. The duct 15 is formed with an enlargement 18 in which is disposed the fan 25 driven by a motor 26 and which draws the air from the axial region of the duct 15 and forces it outwardly against the peripheral wall of the chamber 18 and over cooling pipes 28 which may be the expansion coils of a refrigerating machine. The coils 28 remove the heat of compression so that a portion of the water content of the air is precipitated and discharged through a drain pipe 40. The air then expands to its original volume under the influence of the blower 17 and passes over a heating coil 45 in a circuit cooling the condenser 30 of the refrigerating machine. The speed of the fan 25 is regulated by a thermostat T and a humidostat H in the space to be conditioned, and the fan circuit includes a solenoid 39 for closing the switch 34 of the refrigerator compressor 29. Water is circulated through the condenser 30 of the refrigerating machine and the heating coil 45 by a pump 46 controlled by a thermostat 49 in the duct 15. To maintain a circulation of water through the condenser 30 when the pump 46 is stopped the thermostat 49 closes the circuit of a motor 56 driving a pump 55, and opens a solenoid valve 54, to circulate water through the condenser 30, pipe 42, valve 54, pipe 52 and spray tower 50. The refrigerating system may be replaced by a simple water circulating system. The electric motor 26 may be replaced by a steam or compressed air turbine. In a modification a second series of fan blades are provided beyond those shown, with cooling coils both between the blades and outside the outer blades. For higher compressions the fan may comprise a series of centrifugal fans 72, Fig. 5, comprising discs 73 connected by radial blades 74 the cooling coils 75 being disposed between the impellers. The discs 73 are carried by a tube 69 connected by spiders 70 with the driving shaft 21 and running in annular bearings 65, 68.
Patent GB-1426982-A (GB)
Title: Polyazo dyestuffs
IPC: C09B43/14
Filed: 1974-05-08
Abstract: 1426982 Polyazo dyes BAYER AG 8 May 1974 [9 May 1973 17 May 1973] 20246/74 Heading C4P Novel dyes of formula (where D is a diazo component radical and R is an optionally substituted C 2-4  alkyl radical) are prepared by diazotizing the corresponding alkoxy aniline-sulphonic acid and the amine of formula D-NH 2  and coupling in optional sequence with J-acid urea. Alternatively the dyes may be prepared by reacting the corresponding monoazo compound with phosgene to form symmetrical disazo dyes or using a mixture of monoazo compounds to form the unsymmetrical disazo dyes; also one monoazo compound may be reacted with chloroformic acid phenyl ester and then after elimination of phenol the intermediate product is reacted with the other monoazo compound. The monoazo dyes are prepared by diazotizing the corresponding amine and coupling with N-acetyl-J-acid followed by saponification of the acetyl group. The dyes of Formula (I) prepared include a trisazo dye in which the radical D is derived from 4-aminoazobenzene. The dyes are used for colouring natural materials particularly cotton, wool, leather and especially paper.