baber/WOPTO huggingface dataset:
Patent GB-1090294-A (GB)
Title: Recovery of palladium, platinum and gold
Inventor: DAVIES GEOFFREY NOEL
IPC: C01G7/00
Filed: 1963-09-19
Abstract: At least one of the metals Pd, Pt or Au is recovered from a catalyst comprising at least one of the metals supported in finely divided form on a carrier by dissolving the metal by contacting it in an aqueous medium with HCl and H2O2 at a temperature such that reaction with the metal occurs and below 80 DEG C., separating the catalyst carrier from the resulting aqueous phase containing the dissolved metal and recovering the metal from the aqueous phase.  In an embodiment of the process, a slurry of the catalyst is formed in 5 to 70% HCl, the amount of HCl being in excess of that needed to form the salt of the highest valency of the metal or metals present in the catalyst. H2O2 sufficient to give a concentration of from at least 0.1% to 50% in the medium is introduced. The preferred dissolution temperature is 60 DEG  to 80 DEG C.  The carrier is filtered off when reaction is complete and the metal or metals recovered from the filtrate by conventional methods.  If the metal is present as oxide in the catalyst, it is reduced to metal by digestion with aqueous NaOH/formaldehyde prior to applying the process of the invention or, alternatively, by forming a catalyst/HCl slurry and introducing a metal more electropositive than H2, e.g. Al or Zn, into the slurry, which is then stirred prior to introduction of H2O2.  In the latter reduction process, the slurry may be filtered after the stirring stage.  The recovered solids are then slurried in HCl and H2O2 is added.  Specified carriers are silica, silica gel, silica/alumina, sodium aluminium silicate and alumina.  Pt or Pd may be recovered by this method from catalysts used in the hydrogenation stage of cyclic anthraquinone-quinol processes for production of H2O2.ALSO:Palladium, platinum or gold is recovered from a catalyst comprising one of these metals supported on a carrier by contacting the catalyst with an aqueous medium containing HCl and H2O2 to dissolve the metal, separating the carrier from Me resulting aqueous phase containing dissolved metal, and recovering the metal from said phase.  When the metal is in oxide form in the catalyst, it is reduced to metal form, e.g. by reaction with Al, Zn or an NaOH/formaldehyde solution prior to being reacted with HCl and H2O2.  The process is particularly applied to the recovery of Pd or Pt from catalysts used in the hydrogenation step of the anthraquinone-quinol process for the production of H2O2.
Patent GB-1049398-A (GB)
Title: Snap action electrical switches
IPC: H01H3/42
Filed: 1963-09-19
Abstract: 1,049,398. Snap-action switches. R. F. OXLEY. Sept. 17, 1964 [Sept. 19, 1963; May 28, 1964], Nos. 36963/63 and 22151/64. Heading H2B. A snap-action switch includes spring members 21e ... 21f each with a bowed flexing portion 22 having two positions of stability and a pair of trigger members 25, 26, engageable successively by the switch operating member 41 to cause flexing portion 22 to snap into or out of engagement with contacts 32, 33 in the switch body 12. The spring members 21 are mounted in recesses 13 in the body 12 and can be operated in the sequence 21b makes, 21c breaks, 21c makes, 21b breaks, &c. The switch is rotary, as shown, or, alternatively, the switch members are arranged in straight rows and operated by arms mounted on a travelling nut on a threaded rotary spindle (Figs. 5, 6, not shown). The spring members are of strip, such as spring steel, but may be rods or wires or of plastics material.
Patent GB-771625-A (GB)
Title: Electric charge storage apparatus
IPC: G11C11/403
Filed: 1954-12-22
Abstract: 771,625. Systems of charging and discharging condensers. INTERNATIONAL BUSINESS MACHINES CORPORATION. Dec. 22, 1954 [Dec. 31, 1953], No. 37029/54. Class 38 (4). A condenser 1 is charged from a battery 9 over a transistor 2 when a signal of suitable polarity is applied to the input circuit of the transistor through a transformer 5, the condenser being subsequently discharged into a load circuit 19, 20 over another transistor 3 when a suitably poled signal is applied to a transformer 11 in the input circuit of that transistor. The load may be directly connected in the discharge circuit or, as shown, may be coupled thereto by a transformer 16.
Patent GB-1216868-A (GB)
Title: Fermentation process for the production of amino acids
Inventor: SHIIO ISAMU
IPC: C12P13/04
Filed: 1968-08-05
Abstract: 1,216,868. Amino acids by fermentation. AJINOMOTO CO. Inc. 5 Aug., 1968 [5 Aug., 1967], No. 37334/68. Heading C2C. Amino acids are produced by aerobic cultivation of a strain of a methanol-assimilating bacteria, selected from species of the genera Achromobacter and Pseudomonas and capable of producing amino acids from methanol, on a nutrient medium containing a nitrogen source, inorganic salts and methanol as the main carbon source. Organic growth-promoting substances may also be present and methanol, in addition to being present initially, may be added during culturing. Specified microorganisms include Achromobacter melanophila strains ATCC 21275 and 21452, and Pseudomonas insueta strains ATCC 21276 and 21453, and the process (in which methanol is preferably present in a concentration of from 2 to 3À5% by volume in the medium, the pH is preferably between 4 and 9 and the temperature between 20‹ and 40‹ C.) can yield one or more of the following amino acids: L- or DL-alanine, L-isoleucine, L-leucine, L-threonine, L-valine, L-proline, L-tyrosine, L-serine, L-lysine, L-glycine, L- arginine, L-phenylalanine and L-glutamic acid.
Patent GB-996002-A (GB)
Title: Improvements in or relating to stereophonic sound translating arrangements
Inventor: DUTTON GILBERT FARADAY
IPC: H04R5/027
Filed: 1960-11-01
Abstract: 996,002. Stereophonic systems; supporting microphones. ELECTRIC & MUSICAL INDUSTRIES Ltd. Nov. 1, 1961 [Nov. 1, 1960], No. 37428/60. Headings H4J and H4R. A stereophonic sound translating system comprises two signal channels and more than two microphones mounted on a boom so that the spacing between the microphones can be adjusted, and means for feeding signals from the microphones to the two signal channels, said means being such that one or each of a plurality of the microphones can be caused to feed portions of its output simultaneously to each of the channels. Seven microphones A, B . . . G (Fig. 1), preferably of cardioid type, are mounted on a horizontal boom 9 supported at each end by a tripod X, Y. Each tripod is adjustable in height by a handle 13 (Fig. 2). Cables 14 from the microphones feed into a control box 15 containing splitter transformers for dividing the output from each microphone into two portions which are applied to output channels 17, 18 respectively. Potentiometers or balanced attenuators are provided in the output leads from the splitter transformers to vary the input to channels 17, 18. Preferably a pair or pairs of potentiometers are ganged together so that the output from a pair of, or pairs of, microphones (e.g. C, E) to channels 17, 18 may be varied in complementary manner. Microphone A may feed its entire output to one output channel, microphone G may feed its entire output to the other output channel, while the output from microphone D may be divided equally between both channels. The microphones 1 (Fig. 3) are gripped by a clamp 7 (Fig. 3) within which is a layer 2 of resilient damping material. Each microphone is counterbalanced by a weight 5 and is adjustably secured to the boom 9 by a clamp 21. The clamp 21 has a mark 8 for alignment with a mark 3 on the boom 9. The boom 9 may be of telescopic construction.
Patent GB-366212-A (GB)
Title: Improvements relating to radio-receiving apparatus
IPC: H03J1/04
Filed: 1930-12-12
Abstract: 366,212. Adjusting wireless apparatus. COLE, Ltd., E. K., Priory Crescent, Southend-on-Sea, and WYBORN, E. J., Hedgerows, Ardleigh Green Road, Hornchurch, Essex. Dec. 12, 1930, No. 37586. [Class 37.] A multi-range tuning adjustment for wireless apparatus has a pointer moved over a dial in the form of an annular band of large radius compared with the radius of the condenser plates, the dial embracing a complete circumference. As shown, the scales 1, 2 are illuminated by lamps 12, 13 connected in circuit by a contact 9 operated by a cam 7 on the condenser spindle 6 which is geared to an indicating pointer 3. The scales may be transparent or translucent and may be illuminated by reflected light, or the scales may be continuously illuminated and an arrow on each dial may be illuminated to indicate the scale in use. The scale not in use may be masked.
Patent GB-324194-A (GB)
Title: Improvements relating to feeding bottles
IPC: A61J11/04
Filed: 1928-12-20
Abstract: 324,194. Woolf, B. Dec. 20, 1928. Feeding-bottles.-A rubber teat b is formed with an integral outward flange a upon which is disposed a metal washer c of larger diameter. A washer g is placed on the end of the bottle neck and the parts are secured in the position shown by a collar d with a screw thread or bayonet joint. Specification 220,075 is referred to.
Patent GB-1100190-A (GB)
Title: Somatic antigen vaccines
IPC: A61K39/09
Filed: 1965-09-06
Abstract: A process for the production of a "somatic antigen" vaccine comprises selecting bacteria, culturing the latter on a suitable nutrient medium, which includes an amino acid which is utilised in the formation of cell walls by said bacteria within the "critical concentration range", harvesting the resulting growth, inactivating and then lysing the bacteria.  The "critical concentration range" of the amino acid is generally between 0.1-5.0% w./v. of the nutrient medium.  It is defined as the range of concentration between the concentration above which the growth rate of a bacterium in a nutrient medium containing the amino acid starts to decrease and the concentration at which growth ceases. Specified amino acids are glycine, L-proline, DL-valine, L-histidine, DL-aspartic acid and L-arginine.  Lysis may be carried out using a proteolytic enzyme. The examples relate to the preparation of meningococcus, staphylococcus, mastitis, streptococcus, and blackleg vaccines.
Patent GB-1220910-A (GB)
Title: Connection plug for electric current supply rail
IPC: H01R41/00
Filed: 1968-03-05
Abstract: 1,220,910. Connection plug for current supply rail. OY NOKIA A.B. 5 March, 1968 [11 March, 1967], No. 38111/70. Divided out of 1,218,212. Heading H2E. A connection plug for insertion into a current supply rail has flexible contact fingers 14, 15, 17, 18, 19 mounted within a hollow body. Each contact finger, e.g. 15, can be moved between a retracted and a projecting position by means of an eccentric, e.g. 20. The eccentrics are rotated in synchronism by a knob (23, Fig. 3), so that, upon insertion of the plug into a current supply rail, the contact fingers are moved to a projecting position either simultaneously, or grounding fingers 18, 19 are moved before the others. Fig. 3 shows the plug mounted in a current supply rail as described in the parent Specification.
Patent GB-1293478-A (GB)
Title: Semiautomatic tray packer for fruit
Inventor: WARKENTIN AARON JAMES
IPC: B65B25/04
Filed: 1971-08-13
Abstract: 1293478 Fruit packaging machines; endless conveyers A J WARKENTIN 13 Aug 1971 [1 June 1971] 38206/71 Headings B8A and B8C Fruit from conveyer belt 40 which slopes towards one side is deflected down shoot 65 by plate 64 on to pocketed trays 37 on a conveyer belt 17 disposed at a small acute angle to the shoot. The slope of conveyer belts 17 and 40 can be adjusted by means of legs 12, 13, 41 and 42 while the slope of the shoot can be adjusted relative to the belt 40. Tensioning means for the belt 17 is provided. (For Figure see next page)
Patent GB-1473397-A (GB)
Title: Moulded magnet core components utilising cut steel particles
IPC: H01F1/147
Filed: 1974-09-02
Abstract: 1473397 Magnetic core components WESTTINGHOUSE ELECTRIC CORP 2 Sept 1974 [11 Sept 1973] 38266/74 Heading B3A A method of producing magnetic core components comprises severing microlaminations 42 from thin flat strips of ferrous alloys, annealing the microlaminations in decarburizing and deoxidizing atmospheres, applying a thin elastic insulating layer to the microlaminations, assembly a plurality of the microlaminations in a mould 30, aligning the microlaimnations into a desired orientation and pressing the aligned microlaminations to form the core component. The microlaminations are formed of iron alloy containing 0À05 to 0À15% C and are annealed in wet hydrogen having a dew point in excess of +120 F. and in dry hydrogen having a dew point of less than -40 F. to decarburize and deoxidize the laminations respectively. The annealed microlaminations are coated in a slurry containing magnesium methylate and then placed in a die or mould of predetermined configuration. They are aligned with a magnetic probe, Fig. 4 (not shown), and then pressed with a pressure of at least 50,000 p.s.i. A binder may be admixed with the laminations prior to pressing in the die and set either during or after pressing. The mould 30 includes an outer die member 32 and top and bottom punches 38, 36. A core bar 40 is used to provide the desired inside diameter of the ring core. Uniaxial pressure may be supplied via a double or single action press. Hydrostatic as well as isostatic pressing can be utilized.
Patent GB-1190949-A (GB)
Title: Superconducting Electrical Power Cables
IPC: H01B12/02
Filed: 1967-08-18
Abstract: 1190949 Super-conducting cables SIEMENS A G 18 Aug 1967 [18 Aug 1966] 38269/67 Headings H1A and A4D In a super-conductor power cable, the superconductor is subdivided into component conductors stranded or braided and separated by insulation or semi-conductor so that the transverse resistance between the components is so great for one half the length of lay that the transverse current between the components, caused by current fluctuations, is small compared to these current fluctuations. As shown in Fig. 1, a super-conductor cable comprises super-conductor components 3, each having a normally conducting sheath 4 acting as a parallel stabilizing conductor, and a semiconducting sheath 5, the components being stranded, or braided, on a support tube 1, which may be conducting or insulating, and which has a duct 2 for liquid helium. A polyethylene sheath 6 and conductive layer 7 surround each tube 1, and the lead and return are placed in a tubular cryostat consisting of metal tubes 8, 9 and 10, having a space 12 filled with superinsulation, a duct 13 for liquid nitrogen and an evacuated insulating space 14.  In a modification Fig. 8 (not shown), the support tube 1 is insulating and the semi-conductive layer 5 omitted. In another embodiment Fig. 2 (not shown), the support tube 1 acts as the stabilizing conductor and is separated from the components 3 by a semi-conductive sheath (15). In further embodiments, semi-circular support tubes (16) Fig. 3 (not shown) are used, and strip-like component conductors (17) on a supporting strip (18) are used, with a semi-conductive layer (19) between the component conductors and the support tube, or each component may have its own semiconducting sheath (20) Fig. 5 (not shown). In another embodiment Fig. 6 (not shown), superconducting components (22) each having a normally conducting aluminium strip (23) and a semiconducting sheath (24) are stranded on a resilient cylindrical support tube (21) formed by a helix of insulated steel strip, and spacer strips (25) helically wound around the two layer strips (22/23) prevent contact with a corrugated sealing tube (26).
Patent GB-967259-A (GB)
Title: Polyepoxide resin foams
IPC: C08J9/00
Filed: 1960-11-08
Abstract: A dielectric polyepoxide resin foam is made from a halogenated epoxy resin and a polyamide derived from a polymerized vegetable oil fatty acid, and contains a small amount of antimony oxide powder, and a quantity of metal powder to produce a predetermined dielectric constant. The halogen of the halogenated resin and the antimony oxide powder are each present in an amount not less than 1% of the total weight of the foam.  The preferred metal powder is aluminium.  Its random, uniform dispersion in the foam is achieved with the acid of a dispersing agent, e.g. Diglycol Laurate.  The halogen, which is preferably bromine may be introduced into the resin by using an admixture of an epoxy resin and a halogenated epoxy resin made from a halogenated polyhydric phenol and epichlorohydrin, by reacting a non-halogenated epoxy resin with a halogenated bisphenol, e.g. tetrabromo- or tetrachloro-bisphenol A or a halogenated phenol, e.g. pentabromo- or pentachloro-phenol, or by means of a nuclearly halogen aromatic amine or polyamine curing agent, e.g. 2, 4, 6-tribromo- or trichloro-aniline, or alkylidene-bis-(dibromo- or dichloro-aniline). In the example, a pre-mix was made e.g. in a colloid mill of antimony oxide, liquid epoxy resin, and diglycol laurate.  This was charged with semi-solid epoxy resin and brominated epoxy resin to a mixer at about 75 DEG C. Aluminium powder, ammonium bicarbonate and p,p1-methylene dianiline were than added followed by polyamide resin (Versamid 15) and diethylene triamine.  The mixture was poured, foamed and cured as a light-weight block with a uniform dielectric constant when measured in different directions.  Listed for flamibility, it was found to be self-extinguishing.  The foams are suitable for making light weight lenses for radar navigational, microwave refractive electronic devices.
Patent GB-1124087-A (GB)
Title: Improvements in finishing rollers for use in the manufacture of bars or tubes
IPC: B21B13/10
Filed: 1965-09-08
Abstract: 1,124,087. Rolling. MANNESMANN-MEER A.G. 8 Sept., 1965 [30 March, 1965], No. 38318/65. Heading B3M. Tubes or bars of square or rectangular crosssection are finish rolled by being fed through the pass formed by a fixed roll 2, and adjustable rolls 3-5, mounted in a head 1. The axle 6 of roll 3 is slidable through axle 7 of roll 4, and axle 7 is slidable through the axle of roll 5, so that to adjust the pass by screws 8 and 9, roll 3 and its axle can only move vertically, roll 5 and its axle can only move horizontally and roll 4 and its axle can move both horizontally and vertically.
Patent GB-344936-A (GB)
Title: Improvements in or relating to thermionic valve circuits
IPC: H03F3/36
Filed: 1929-12-14
Abstract: 344,936. Valve amplifying circuits. STANDARD TELEPHONES & CABLES, Ltd., SANDEMAN, E. K., and LYALL, J. S., Columbia House, Aldwych, London. -(Reeves, A. H. ; 46, Avenue de Breteuil, Paris.) Dec. 14, 1929, No. 38369. [Class 40 (v).] In resistancecoupled amplifiers of the type in which the plate of one valve is directly connected to the grid of the next, a suitable operating-potential for the grid of each valve is derived from a resistance which carries either anode current or filament current, or both. As shown in Fig. 2, a common plate and grid-biasing battery B is shunted by a potentiometer P, and the earthed filaments are connected to a central tapping. The grid circuit of each valve is completed through a part of the potentiometer which is at a lower potential than the filament, the derived grid-bias being sufficient to offset the direct voltage from the plate of the previous valve. In the modified arrangement shown in Fig. 3, the battery B1 supplies both the filament-heating current and grid-bias. The filaments are fed through a series resistance R4, tappings being taken to each grid from points at suitable negative potentials relatively to the filament. In a third arrangement, grid-bias is derived from a resistance inserted in series between the high- and low-tension batteries. To prevent frequency-discrimination due to the capacity effect of say the valve V2, Fig. 2, across that part Ql of the total potentiometer resistance P1, Q1, a compensating capacity may be shunted across the other resistance element P1.
Patent GB-1095679-A (GB)
Title: Rotors comprising flails or flail-like tools
Inventor: HOHLFELD GOTTFRIED
IPC: A01D34/535
Filed: 1965-09-08
Abstract: A flail-rotor, for a forage-harvester or potato-haulm disintegrator, comprises flails swingably connected to a rotor-shaft by 4 rows of connecting elements arranged in two pairs of rows, the rows of each pair having a smaller angular spacing from one another about the rotor-axis than from the rows of the other pair.  Preferably, the two pairs of rows are disposed diametrically opposite to one another but the angular spacing of the two rows of each pair about the rotor-axis is approximately 30 degrees.  By this arrangement, the flails of the four rows cannot collide, the rotor-shaft itself forming an abutment limiting the swinging movement of the flails.ALSO:A rotor, for a hammermill, comprises flail-like tools swingably connected to a rotor-shaft by two pairs of rows of connecting elements, the rows of each pair having a smaller angular spacing from one another, about the rotor-axis, than from the rows of the other pair.  Preferably, the two pairs of rows are disposed diametrically opposite to one another, but the angular spacing of the two rows of each pair about the rotor-axis is approximately 30 DEG .  By this arrangement, the tools of the four rows cannot collide, the rotor-shaft itself forming an abutment limiting the swinging movement of the tools.
Patent GB-842633-A (GB)
Title: Improvements in the manufacture of printed circuits
IPC: G03G7/00
Filed: 1956-12-18
Abstract: 842,633. Etching processes. INTERNATIONAL BUSINESS MACHINES CORPORATION. Dec. 18, 1956 [Dec. 21, 1955], No. 38591/56. Class 100(2) A method of manufacturing a printed circuit comprises the steps of forming an acid-resistant powder image of the printed circuit to be produced on the surface of a transfer sheet having. a gelatin-like flaccid coating thereon, treating the powder image so that it can adhere to the metal foil surface of a composite sheet comprised of insulation backed metal foil, transferring the treated powder image to the metal foil surface, and etching out the uncoated surface portions of the metal foil. The remaining powder'coating is then removed to expose the printed circuit. The acid resistant powder image is formed by electrically charging an electrophotoplate, exposing the charged plate to an optical image of the circuit to be produced so as to form a latent electrostatic image thereof on the plate, and dusting the surface of the plate with a resinous, acidresistant. insulating powder. The developed powder image 24 (Fig. 1d) on the electrophotoplate 10 may be transferred to the coated side of the transfer sheet 26 by a movable pressure roller 28. The transfer sheet may consist of photographic 'positive print' paper and is such that the powder particles are partially embedded in the gelatin-like flaccid coating thereon. The transfer sheet is then pressed, as by a roller, into contact with the insulation backed metal foil in the presence of the vapour of a solvent for the powder so that the adherence of the particles to the metal foil is greater than their adherence to the flaccid coating and re-transfer takes place. By subjecting the powder particles to the action of heat or more solvent vapour they will fuse together to form an acid resist. The insulation backed metal foil is then etched so that the metal foil is removed around the resist. The final step consists of removing the acid resist to expose the printed circuit by means of the action of more solvent. U.S.A. Specifications 2,297,691, 2,357,809, 2,550,724, 2,588,699, 2,638,416, 2,659,670 and 2,576,047 are referred to.
Patent GB-846411-A (GB)
Title: Improvements in or relating to endless conveyor and elevator belts
Inventor: LEECH JOHN WESTON
IPC: B65G15/36
Filed: 1957-12-13
Abstract: 846,411. Endless-belt conveyers. BRITISH WEDGE WIRE CO. Ltd. Dec. 11, 1958 [Dec. 13, 1957], No. 38718/57. Class 78 (1). An endless conveyer or elevator belt of rubber or plastic material has an insert of wire mesh made up of alternate right and left-hand coils 10, 11 connected by rods 12.