baber/WOPTO huggingface dataset:
Patent GB-661976-A (GB)
Title: Improvements in industrial processes for extracting rhenium
IPC: C22B61/00
Filed: 1949-03-01
Abstract: <PICT:0661976/III/1> Molybdenite concentrates, obtained by selective flotation of copper-molybdenum sulphide ores, are treated for the extraction of rhenium present by heating in an oxidizing atmosphere at 500-600 DEG C. until all the sulphur has been eliminated, and thereupon heating in the presence of oxygen at above 550 DEG C. but below the temperature of volatization of molybdenum oxide to volatilize rhenium as Re2O7, entrainment of molybdenum oxide in the evolved gases being precluded by fusing together of the oxide particles.  Two forms of apparatus are shown.  In Fig. 2, the concentrate passes down a multihearth furnace 14, the gases from the upper hearths passing to cyclones 6, 6\sv, 6" to separate molybdenite dust which is returned to the furnace, and the gases from the lower hearths passing to multicyclone(s) 9, cooling air being admitted at 8 although the multicyclone is kept at a sufficiently high temperature, say 250-300 DEG C. so that rhenium oxide cannot condense, an atomizer 10 in which the oxide is dissolved in water or a highly diluted base such as ammonia, and an electrostatic separator 13.  Separated material is passed to tank 12, whence, with the solution from atomizer 10, it is circulated to the top of the latter.  When a diluted base is employed, its concentration is such as to maintain the pH of the solution at less than 7.  Molybdic acid is discharged at 26.  In the other apparatus, the concentrate is dried and passed to a rotary kiln, the gases first evolved being treated to separate the molybdenite dust and being thereafter diverted to the rhenium oxide-separation circuit.
Patent GB-537326-A (GB)
Title: Improvements relating to concentration, fractionating or the like of liquids
IPC: C01B17/88
Filed: 1940-03-28
Abstract: 537,326. Concentrating acids: column stills; liquid seals. BAMAG. Ltd., and MANNING, A. H. March 28, 1940. No. 5564. [Class 32] [Also in Group XXVIII] A fractioning tower 15 for condensing vapours evaporated in a still 2 is mounted independently of the still by means of a union member 8 which extends into a sealing member formed round the vapour orifice 2 of the still and is provided with a sealing material which is liquid at the boiling temperature of the liquid treated, e.g. in the case of sulphuric acid (b.b. 317‹C.) an alloy of lead and bismuth, or sulphur, or a high boiling oil. The union 8 is supported by means of a flange 9 on an independent frame 10 and is provided with a socket 13 in which the bottom element 14 of a column 15 is seated. The reflux condensate returned from the column to the still is prevented from splashing against the sides of the union or seal by collecting it in a central seal pot 17 standing in a collector tray 18 supported by a perforated member 20 which rests on the flange 9.
Patent GB-139483-A (GB)
Title: Improvements in spark plug cleaner
IPC: H01T21/04
Filed: 1920-02-24
Abstract: 139,483. Champion Spark Plug Co., (Assignees of Frey, H. H.). Oct. 18, 1916, [Convention date]. Sparking-plugs. - For cleaning deposits from the inner portions of a plug, a tube 4 which may be of glass is employed, one end being of larger diameter and containing a resilient gasket 6 for the reception of the plug. Fluid 9 and a number of needles 7 are used as cleaning agents. A cap with a gauzecovered opening closes the open end of the tube when not in use.
Patent GB-1025464-A (GB)
Title: Improvements in or relating to gas-blast electric circuit-breakers
Inventor: MARSHALL ANTHONY FRANK
IPC: H01H33/58
Filed: 1962-02-14
Abstract: 1,025,464. Gaseous flow silencers. ENGLISH ELECTRIC CO. Ltd. Feb. 13, 1963 [Feb. 14, 1962], No. 5632/62. Heading FIB. [Also in Division H2] The silencer of a gas blast circuit breaker has a restricted outlet 20 provided with a relief valve 21 responsive to excessive pressure in the silencer to increase said outlet. The valve may consist of a rupturable diaphragm (Fig. 1, not shown), a spring-loaded relief valve (Fig. 3, not shown); a valve member retained by a sheer pin calibrated to shear when the pressure difference reaches a predetermined value; a ported slide valve or a hinged valve member.
Patent GB-228728-A (GB)
Title: Improvements in and relating to cricket bats
IPC: A63B59/08
Filed: 1924-03-06
Abstract: 228,728. Foster, F. March 6, 1924. Cricket bats. - Elastic bands for protecting cricket bats have beaded edges D and irregular surfaces formed by intersecting grooves, or projections or recesses. In a modification, the band is formed as a cap H which fits over the bottom of the bat. In another arrangement, the band is composed of spirally wound elastic tube or tubes attached to an elastic sleeve.
Patent GB-1555062-A (GB)
Title: Heartbeat rate monitors
IPC: G04G99/00
Filed: 1977-02-11
Abstract: A heartbeat rate monitor has a light source, powered by a rechargeable battery, for transilluminating skin tissue. A semiconductor detector which produces an output signal in dependence on light originating from the light source and reflected from the skin tissue, and hence on changes in arterial blood flow, is additionally used, on exposure to ambient light, to produce a current for recharging the battery.
Patent GB-762389-A (GB)
Title: Improvements in or relating to electrical heating devices
Inventor: SHERLOCK JOHN EDWARD
IPC: F24H3/00
Filed: 1954-02-26
Abstract: 762,389. Electric air heater and clothes airer. BRITISH THERMOSTAT CO., Ltd. Feb. 25, 1955 [Feb. 26, 1954], No. 5787/54. Class 39(3) A convector air heater comprises a vertical tubular casing 1 containing a heating resistor 8 and having lower air inlet louvres 22 and upper deflectors 16 at the hot air outlet, has a flat top 7 extending beyond the air outlets so that if the heater is displaced from the vertical, the air outlets cannot be blocked. Helical resistance wires 8 are supported by studs 9 between an open inner cylinder 12 through which cold air rises and a metal sleeve 13 within a tubular outer casing 1. The air is diverted outwardly at the top by deflectors 16. Cold air enters through louvres 22 in a base 3 which is insulated from the upper tubular metals and passes over a thermostat 20 adjustable by a handle 21. The studs 9 supporting the resistor 8 are mounted on cross pins 11 passing through the cylinder 12 and supporting the sleeve 13. The heater 8 is connected to a terminal block 14 on the base 3. A lamp 18 mounted on the cylinder 12 indicates passage of current to the resistor and is accessible by sliding downwards an ornamental spacing ring 19. Arms 23 beneath the table top 7 may be swung out to support garments for airing. If the heater is up-ended or if the air outlets are stifled, hot air passes over the thermostat to cut off current supply.
Patent GB-105627-A (GB)
Title: Improvements in or relating to the Concentration of Ores.
IPC: B03D1/008
Filed: 1916-04-20
Abstract: 105,627. Sulman, H. L., Edser, E., and Minerals Separation, Ltd. April 20, 1916. Surface-tension separating processes. - In a froth-flotation process, the frothing-agent used is a soluble soap such as sodium oleate, stearate, palmitate, or resinate, in such proportion as to leave in the pulp at the period of aeration a small quantity of free soluble soap less than the quantity which produces a soap-air-water froth free from mineral contents. The circuit liquor should be neutral or slightly alkaline, and in some cases, oils, sodium silicate or phosphate or other salts having an alkaline reaction, or silicic acid sol, or a caustic alkali such as caustic soda, or another mineral-frothing agent, may be added. The process is applicable to oxidized or sulphide ores, and also to non-metalliferous ores, and to the separation of sulphur or carbonaceous particles from materials containing them. Specifications 7803/05, 2359/09, 21857/10 and 16141/13 are referred to.
Patent GB-1518359-A (GB)
Title: Force measurement
IPC: G01L5/00
Filed: 1977-02-02
Abstract: 1518359 Measuring force electrically STRAINSTALL Ltd 2 Feb 1977 [14 Feb 1976] 05883/76 Heading G1N The stresses produced in a rail track are measured by a strain gauge transducer comprising a hollow cylindrical body 6 Fig. 4 secured in a transverse hole in the rail, carrying four strain gauge resistors G1-G4 disposed symmetrically on the inside surface of the body 6. With the strain gauges at 45 degrees to the longitudinal axis of the rail, as shown, they measure the shear stress corresponding to the weight of a vehicle on the rail. Alternatively the strain gauges may be located along the perpendicular to the axis of the rail when they measure the tensile or compressive stress in the rail, due e.g. to ambient temperature conditions.
Patent GB-1060344-A (GB)
Title: New derivatives of glycyrrhetinic and oleanolic acids
Inventor: TURNER JOHN CAMERON
IPC: C07D295/185
Filed: 1965-02-11
Abstract: The invention comprises amides of 18a - and 18b -glycyrrhetinic and oleanolic acids, 3-acylates thereof wherein the acyl group may contain a carboxyl group in the free or salt form, and 3-keto derivatives thereof, wherein the amide group is of formula -CONR1R11 in which R1 and R11 are hydrogen atoms or optionally substituted alkyl, cycloalkyl, aryl or aralkyl radicals or the group -NR1R11 is a heterocycle, and their preparation by reaction of a 3-acyloxy or 3-keto acid halide with an appropriate amine, followed if desired by (a) hydrolysis of the 3-acyl group or of an ester substituent in the amide group, (b) re-acylation of a 3-ol with a dicarboxylic acid, and (c) conversion of any free carboxylic group into a salt.  The compounds of the invention have anti-inflammatory activity and may be used in pharmaceutical compositions in combination with a carrier, for example in forms suitable for oral or parenteral administration.
Patent GB-679503-A (GB)
Title: Improvements in and relating to pressure gauges
Inventor: CHRYSTAL CYRIL DAVID
IPC: G01L7/00
Filed: 1950-03-09
Abstract: 679,503. Electric pressure gauge. TATE & LYLE, Ltd. March 9, 1951. [March 9, 1950] No. 5978/50. Class 40 (i). [Also in Group XIX] An electrically responsive diaphragm-type pressure gauge has a substantially rigid member 3 set across the outer face of the diaphragm 2 and means 5 and 8 bearing against the member 3 in a manner permitting little movement of the member 3 from its neutral position corresponding to zero pressure, one of the members 5 comprising an electrically sensitive device adapted to exert a thrust which, in association with the means 8, balances the pressure on the diaphragm 2, the other means 8 being movable along the face of the member 3 to vary the proportion of the total thrust on the diaphragm that must be balanced by the electrically sensitive device 5. The electrically sensitive device 5 may be means linked to a microswitch associated with an electronic relay and an electric balancer in the form of a solenoid whose core is arranged to thrust upon the member 3. Measurement of the current in the solenoid will then give an indication of the pressure exerted on the flexible diaphragm 2. Instead of the electrically sensitive device, pneumatic means (see GroupXIX) may be used.
Patent GB-557838-A (GB)
Title: Improvements in or relating to inductors having magnetic powder cores
IPC: H01F1/28
Filed: 1942-05-04
Abstract: 557,838. Inductances. POLYDOROFF, W. J. May 4, 1942, No. 5985. Convention date, May 5, 1941. [Class 38 (ii)] The core of a high frequency inductance comprises flattened particles of magnetic material, e.g. iron reduced by hydrogen and flattened in a ball mill, insulated from each other, held together by a binder such as kaolin or water-glass, and oriented so that they lie parallel to the flux. The core may be made of arcuate shape and arranged to be slidable in a semi-toroidal winding, Fig. 4, an additional piece being provided to complete the magnetic circuit, or it may be of straight cylindrical form about four diameters long and slidable in a coil about three diameters long. Alternatively, the core may be of rectangular form 12, Fig. 6, rotatable in a winding 11 so that the particles may be variably oriented with respect to the flux.
Patent GB-1254155-A (GB)
Title: Cyclohexene derivatives
IPC: C07C49/258
Filed: 1969-04-28
Abstract: 1,254,155. Cyclohexene derivatives. F. HOFFMANN-LA ROCHE & CO. A.G. 28 April, 1969 [29 April, 1968], No. 6005/71. Divided out of 1,254,152. Heading C2C. The invention comprises compounds of the general formula in which R is a cyano group or the group -COCH 2 CH(CH 3 ) 2 . The compounds may be made by (a) converting limonene to p-menth-1- en-9-ol by treatment with a dialkyl or dialicyclic boron or aluminium compound or tri (lower alkyl) aluminium compound followed by oxidation with nascent oxygen; (b) converting the hydroxy group of the product to a cyano group by replacing the hydroxy group by an electrophilic leaving group, e.g. halogen, or an alkyl or arylsulphonyloxy group and then treating the product with an alkali metal cyanide; and (c) if required converting the cyano group of the product to a -COCH 2 CH(CH 3 ) 2  group by treating with a compound where M is cadmium halogen, magnesium halogen, lithium, potassium or cadmium in a Grignard reaction. Various optical isomers may be obtained depending on the isomer used as starting material.
Patent GB-890764-A (GB)
Title: Improvements in display stands having detachable and interfitting parts
Inventor: MILLETT DAVID MICHAEL
IPC: A47B3/12
Filed: 1960-02-22
Abstract: 890,764. Tables; furniture-joints. MARLER HALEY STUDIOS Ltd. Dec. 16, 1960 [Feb. 22, 1960], No. 6113/60. Classes 52(2) and 52(3) A display stand comprises a plurality of interfitting and detachable parts including some bars 3 which would usually be used in a horizontal position and some legs 1 which would usually be used in a vertical position, the bars being flat rectangular section elongated members which are formed with spaced apart transverse slots 4 extending from one edge to about half-way across the width thereof, and the legs I being elongated members of any suitable section with at least one end formed with criss-cross cuts 2 extending lengthwise for a depth approximately corresponding to the length of the transverse slots 4 in the bars, giving such end a cruciform slotting with the sides of the slots opening out at the sides of the leg, the bars being thereby adapted to interfit with one another and with the slots 2 of the legs. The cruciform slots may be disposed on the diagonals of the section, as shown in Fig. 4, or they may open centrally of the ends of the four elongated faces of the leg. As shown in Fig. 7 several legs may be built up vertically end to end, a pair of bars 3 mounted in the top of one leg constituting a cruciform key to interfit with the bottom end of another leg member.
Patent GB-220969-A (GB)
Title: Improvements in automatic delivery machines to prevent pilfering
IPC: G07F11/16
Filed: 1923-03-03
Abstract: 220,969. Garrett, D. March 3, 1923. Delivery of articles stored in piles; coin action,. weight.-The delivery drawer e carries a race or guide f provided with a track g, j through which a pin d on a tilting hopper b travels, ratchet teeth on the track ensuring a complete inward and outward movement of the drawer. The drawer is normally locked by the pin d engaging a tooth h on the race f until a coin inserted through a shoot c tilts the hopper b. The movement of the drawer tilts the hopper further to discharge the coin. According to the invention a part of the inner boundary of the track is constituted by a pivoted pawl i which closes the lower portion j and guides the pin d positively to the upper portion g. The pawl i allows the pin d to pass through to engage the tooth h when the drawer is pushed in. Inward movement of the drawer, when it is being pulled out, is prevented by a tooth on the track g and by a pivoted depending pawl k.
Patent GB-269117-A (GB)
Title: Boat davit
IPC: B63B23/04
Filed: 1927-03-05
Abstract: 269,117. McEachnie, A. March 1927. Davits.-In a luffing davit in which the davit arms are interconnected at their heads by a substantially horizcntal bar such as described in Specification 6424/13, the top bar 1 is of channel section and is scarf jointed to the davit arms, which comprise a pair of channel sections 3, 4 arranged back to back, one section being continned in an inward horizontal direction to afford a landing for the bar 1. The davits are luffed by screw gear operated by bevel gear mounted in all inboard bracket secured to the deck.
Patent GB-1206312-A (GB)
Title: Machine for making cutting blades
Inventor: MARTIN FRANCIS WILLIAM
IPC: B24B3/56
Filed: 1968-02-08
Abstract: 1,206,312. Grinding cutting edges. A.M.F. Inc. 24 Jan., 1969 [8 Feb., 1968], No. 6250/68. Heading B3D.  A machine for forming cutting blades from strip steel provided in lengths or coil form comprises means for conveying the strip 14 along a predetermined path past a grinding position, a first grinding wheel 24 adjustably mounted on the machine and arranged to provide a cutting edge on a longitudinal edge of the strip as it is conveyed past the grinding position, means for stopping the movement of the strip after a predetermined length of strip has passed a parting position, clamping means for holding the strip during parting off, and a second grinding wheel 41 movable into the path of the strip for parting off the predetermined length of strip. In the machine described, rollers 11 driven by motor 13 feed the strip 14 between guide-plates 20 to the bevelled grinding wheel 24 driven by motor 23 and movable towards the strip by rotation of a hand wheel 28. The strip then passes to wheel 41 supported from a pair of arms 44 which are oscillatable under the action of a motor, not shown, to cause the wheel 41 to move across the path of the strip. In operation the strip is advanced until its leading edge contacts a microswitch 65 thus causing the motors 13 and 23 to be stopped and the drive motor for the wheel 41 and the motor which oscillates the arms 44 to be started. As the arms 44 move, a nose carried by one of them causes a spring- loaded clamping arm 55 to be urged towards a stationary guide-plate 57 so that the strip is held therebetween during parting off. During the period that the strip is in motion a shaft 34 driven by the motor 13 operates via connecting linkwork including a pawl 38 and ratchet 39 to rotate the hand wheel 28 and advanced wheel 24, and simultaneously the shaft 34 operates via further linkwork to oscillate a lever 31 carrying a diamond tool 30 which dresses the wheel 24 as the latter is advanced step-by-step.
Patent GB-511967-A (GB)
Title: Improvements in or relating to episcopes
IPC: G03B21/06
Filed: 1938-02-28
Abstract: 511,967. optical projection apparatus. CONRAD, C. Feb. 28, 1938, No. 6251. Convention date, March 22, 1937. [Class 97 (i)] In an episcope in which the illuminant comprises an annular arrangement of electric lamps G, disposed about the light cone passing from the object 3 to the objective 12 and having a parabolic reflector 2, one side of the reflector limits the object field while the other side limits the light cone. The lamps are placed at the focus of the reflector which, may be of square shape, and two or more reflectors may be provided in superposition in parallel planes.
Patent GB-558616-A (GB)
Title: Improvements in or relating to clinometers
IPC: G01C9/20
Filed: 1942-05-08
Abstract: 558,616. Clinometers. TEMPLETON, J. C., and WINKLER, L. T. May 8, 1942, No. 6269. [Class 40 (i)] A clinometer comprises a thin cylindrical vessel 20 which is half filled with mercury 24 and has a bare resistance 21 extending around the inner surface, Figs. 1, 3, or along a chord, Fig. 4, so that as the vessel tilts about its horizontal axis more or less of the resistance is short-circuited by immersion in the mercury. The angle of tilt may be indicated by a galvanometer 28 in circuit with the resistance. In Fig. 3, the resistance extends around the whole of the inner surface and a Wheatstone bridge circuit is employed. For use in bore-hole surveying, two clinometers 20 of the kind described are mounted in a frame 32 with their axes at right angles, the frame being pivoted in a container 33 about an axis normal to the axes of both the clinometers, but being prevented from rotation when the container is rotated by a magnetic or gyroscopic device. The clinometers may control apparatus within the container for recording on a time-base, but preferably they control recorders 28 at the surface over conductors included in the winding cable 35, which through suitable gearing drives the record drum 41 as the instrument is lowered and raised. The clinometers may be operative simultaneously or one may be operative during lowering and the other during raising of the instrument.
Patent GB-592029-A (GB)
Title: Improvements in and relating to scanning mechanism in which oscillating motion and rotatory motion are imparted to a member
IPC: G01M1/12
Filed: 1942-05-11
Abstract: 592.029. Aerials. NASH & THOMPSON, Ltd., NASH, A. G. FRAZER-, WHITAKER, A., and FOX, C. May 11, 1942, No. 6360. [Class 40 (v)] Relates to radar scanning mechanism in which a member U, such as a reflector, is oscillated about an axis I-I and rotated about an axis IV-IV intersecting the axis I-I. According to the invention, the body U is balanced dynamically by weights S of such magnitude and disposition that (a) the moment of inertia of the parts about two axes perpendicular to one another and to the axis I-I are equal to one another, and (b) the centre of gravity of the parts lies substantially on the point of intersection of these three axes. Formulae are given for calculating the magnitude and disposition of the balance weights S. As shown, a parabolic reflector 1 is fixed to a member 3 having trunnions 4 mounted in the arms of a U-shaped frame 6 secured to a rotatable shaft 7. The member 3 has parts 13 bearing on the outer race of a ball bearing 15 carried by an inclined eccentric disc 16 fixed to a rotatable shaft 17. To ensure that scanning is effected in a spiral path, the shafts 7, 17 are rotated at differing speeds from a hydraulic motor 23 by chain gearing 18...21. The motor 23 has a centrifugal governor to keep the speed constant. The parts 13, 1, 6 may have auxiliary balance weights 36, 37, 38, respectively, the main balance weights 34 being secured to the member 3 by arms 33.
Patent GB-1417246-A (GB)
Title: Electrolytic regeneration of spent etchant and recovery of dissolved etched metal
IPC: C23F1/46
Filed: 1973-02-09
Abstract: 1417246 Electro-winning; regeneration of spent etchant SHIPLEY CO Inc 9 Feb 1973 [9 Feb 1972] 6385/73 Heading C7B [Also in Division B6] Dissolved etched metal values are recovered from a ferric chloride etching solution and the etching solution is regenerated by electrolysis thereof such that the dissolved etched metal values are deposited on the cathode, and the ferric ions which have been reduced to ferrous ions during etching are oxidized to ferric ions at the anode. To produce conditions favourable to electro-winning and unfavourable to etching, oxygen generated at the anode should be kept out of the cathode area e.g. by avoiding agitation of the electrolyte or by bagging the anodes. Electrolysis may take place in a cell as shown in which metal 11 is deposited on cathode 2, e.g. of stainless steel, having insulated areas 9 and 10 and cooled by coolant supplied via tube 3, metal 11 deposited being scraped from the cathode to form a layer 13 which may be removed via outlet 14 or collected in a basket; anodes 7, e.g. of graphite, being symmetrically spaced around the cathode and optionally a cooling jacket 5 being provided about the cell. The etchant may have been used to etch copper, iron or nickel, the latter being recovered as iron-nickel. The cathode may be coated with a thin non-insulating layer of polymer, e.g. Teflon (Trade Mark) or polystyrene to assist removal of deposited metal therefrom.