baber/WOPTO huggingface dataset:
Patent GB-1365955-A (GB)
Title: Method for enriching isotopes of uranium
IPC: G01N30/02
Filed: 1971-11-04
Abstract: 1365955 Isotopic uranium enrichment ATLANTIC RICHFIELD CO 4 Nov 1971 [12 Nov 1970] 51353/71 Heading C1A Enrichment of the U235 content of a mixture of U235 and U238 isotopes is effected by forming an elongated cation exchange system having an initial zone loaded with tetravalent uranium and the remainder loaded with cations of a metal effective in reducing hexavalent uranic cations U<VI> to uranous cations U<IV>, percolating through the exchange system an acidic solution of a metal salt effective in oxidizing U<IV> to U<VI> whereby the uranium zone is chromatographically displaced from an initial position in which the tail of the uranium zone is at the beginning of the elongated exchange system to an enrichment termination position with the head of the uranium zone at the end of the exchange system, and thereafter recovering a solution of U<VI> enriched in U235 isotope as a head portion of the uranium zone exits. Preferably, the whole of the exchange system is first loaded with a reducing metal cation preferably Ti<III> provided by passing therethrough a solution of TiCl3. Then an acidic solution of U<VI> cations, e.g. of uranyl chloride is fed to the initial zone of the system where the U<VI> cations are reduced to U<IV> cations which are retained and the oxidized reducing metal cations displaced (as TiOCl2), so providing the required initial zone loaded with U<IV> cations. The feeding thereto of the acidic solution of oxidizing metal salt, preferably FeCl3, oxidises the U<IV> cations to U<VI> cations which are displaced into the next zone of the exchange system wherein they are reduced to U<IV> cations. Further feeding of the oxidizing solution causes progressive displacement of the uranium as a band of U<IV> cations with an outflowing effluent of firstly aqueous TiOCl2 and HCl and then aqueous TiOCl2, FeCl2 and HCl until the uranium band reaches the end of the reducing metal loaded exchange system, whereafter displaced U<VI> appears in the effluent, a first portion being enriched in U235 content. The elongated exchange system may comprise a plurality of column units coupled in series, each loaded with preferably a cation-exchange resin, e.g. a sulphonated styrene: divinyl benzene copolymer, though natural or synthetic inorganic cation-exchange materials, e.g. geolites may be used.
Patent GB-1161434-A (GB)
Title: Improvements in or relating to Switches
Inventor: CARTWRIGHT JOHN ANTHONY
IPC: H01H19/635
Filed: 1966-11-22
Abstract: 1,161,434. Rotary spindle switches. PAINTON & CO. Ltd. 22 Dec., 1967 [22 Nov., 1966], No. 52147/66. Heading H1N. A multibank rotary spindle-operated switch comprises a threaded member 21, Fig. 1, with which a nut 60 co-operates and carries contacts 70 disposed around its periphery for engagement with rows of contact studs 11 extending parallel to the axis of rotation. The nut 60 comprises movable contact carrying projections 62, Fig. 2 extending between guides 4 formed in the casing 2. The fixed contacts 11 are mounted on strips 10 of insulating material which are inserted in opposed grooves 3 in the casing 2 and are retained by the end plate 30 of the rotor 21 when assembled. The sliding contacts 70 comprise spring fingers 71, 72, 74 one which engages a continuous slider strip 13, while the remaining two alternately engage staggered contacts 11 in a pair of parallel rows. A detent device comprises a pair of balls 34 held by a spring disc 33 riveted to the cover 35 and engaging detents 32 in the rotor end plate 30. The removable cover 35 has a series of radial projections for locking under castellated flanges 52 of the casing 2 on rotation of the cover 35.
Patent GB-1143448-A (GB)
Title: Improvements in or relating to manganese-zinc-ferrites
IPC: C04B35/26
Filed: 1966-11-22
Abstract: 1,143,448. Magnetic compositions. SIEMENS A.G. 22 Nov., 1966 [23 Nov., 1965], No. 52224/66. Heading H1H. An Mn-Zn ferrite is obtained by sintering at 1270-1300 C. for 4-20 hrs. an oxide mixture containing less than 0.05% by wt. impurities and having the composition 54-58 mol. per cent Fe 2 O 3  10-24 mol. per cent MnO 18-36 mol. per cent ZnO The mixture may initially be calcined at 850 C., ground, and pressed into ring cores. Sintering may be effected initially in air and then in N 2  containing less than 0À02 vol. per cent O 2  The cores may then be cooled to 300 C. in N 2 . The product has an initial permeability greater than 4000 over the range - 50 to + 120 C.
Patent GB-1326758-A (GB)
Title: Integrated semiconductor structure
IPC: H01L27/00
Filed: 1970-11-04
Abstract: 1326758 Semi-conductor devices INTERNATIONAL BUSINESS MACHINES CORP 4 Nov 1970 [7 Nov 1969] 52371/70 Heading H1K An integrated semi-conductor structure (Fig. 1) comprises wafer 10 of P- monocrystalline Si (or Ga As) whose surfaces are coated with insulant SiO 2  except for etched out portions at emitter regions of transistors 22, 24 in the top and bottom surfaces, which are common emitter connected by metallization 26 traversing an aperture thereof. The wafer is mounted on multilayer ceramic substrate 20 having a conductive surface pattern by solder pads e.g. 30. Alternatively (Fig. 2, Fig. 3, not shown) further transistors 32, 34 are added and transistor 24 deleted; the active devices being limited to the top surface and being interconnected by metallizing as in Fig. 1. A thermal path 31 of e.g. solder and gold plated copper is interposed between insulated metallization 27, 29 on the wafer and substrate, and the active devices are connected to the substrate circuitry by solder pads e.g. 30. In fabrication, the planar surfaces of 10 are coated with photoresist exposed through masks, and the exposed portions washed away after which a hole is preferentially etched with hot KOH & NaOH solution along a well defined crystallographic plane in square or circular hourglass shape; alternatively an oxide layer may be formed and a window etched through photoresist into the oxide, which acts as a mask for etching the hole; after which the remaining oxide is removed. (Figs 4 to 6, not shown). Electron or laser bombardment may also be used to produce the hole. The semi-conductor devices of the wafer are then formed, the hole is oxidized, and metallized (Fig. 7) with e.g. aluminium through metal masks at the same time as the required metallization of the wafer. In a modification (Fig. 9) optical devices such as light sensitive or light emissive diodes 40, 42 may be formed in surface 12 with insulating portion region 41 interposed. Their active regions are connected by metallizing 26 to metallized layers 28, 28<SP>1</SP> of substrate 20 over solder pads 30, 30<SP>1</SP>, and diode 40 is similarly connected to transistor 24; transistor 25 may have similar connections (not shown). Plural wafers may be stacked into a three dimensional integrated semi-conductor structure (Fig. 10, not shown), an active device in any wafer being connectible to one in any other wafer over metalliling and interconnecting solder pads, and any wafer may be used without active devices as a metallized interconnecting structure. Other active devices e.g. FET's and bipolar transistors may be formed in any wafer and assembled with interconnection wafers and light emitting diode wafers.
Patent GB-1253805-A (GB)
Title: Improvements in or relating to drinking devices for animals
Inventor: WALLACE MARGARET ELISE
IPC: A01K1/035
Filed: 1967-11-20
Abstract: 1,253,805. Drinking devices for cages. M. E. WALLACE. 19 Nov., 1968 [20 Nov., 1967], No. 52691/67. Heading A1M. A drinking device, e.g. for a rodent cage 1, comprises a supply conduit 5, at least one feed valve 6 for positioning in or adjacent the cage 1 and drainage means 2 below the feed valve(s) 6 for unconsumed liquid. Several cages 1 may be fed from the same conduit 5, or from branch conduits (not shown). Liquid from a tank 27 reaches the conduit 5 through a flexible tube 8 and an adjustable pressure valve 23. The or each feed valve 6, Fig. 2, may comprise a body 17, e.g. of metal, screwed to an aperture in the lower wall 20 of the conduit 5, and the liquid flow may be adjusted to a uniform series of drips by varying the spacing between the upper end 21 of the body 18 and the upper wall 22 of the conduit 5. Alternatively (not shown), the valve(s) 6 may be actuated by the touch of an animal within the cage 1. A collecting bowl 10 below the valve or valves of each respective cage 1 funnels the unconsumed liquid into a common drainage channel 2 having an outlet 3. Alternatively, Figs. 3-4 (not shown), the drainage means may comprise a trough-like extension (32) of the cage floor, having drainage holes (36), a collecting channel (not shown) lying below the holes (36).
Patent GB-1530631-A (GB)
Title: Control unit for a communication network
IPC: H04J3/17
Filed: 1975-12-29
Abstract: 1530631 Automatic exchange systems INTERNATIONAL BUSINESS MACHINES CORP 29 Dec 1975 [30 Dec 1974 (5) 26 June 1975] 52956/75 Heading H4K A t.d.m. switching system including a time switching memory interconnecting incoming and outgoing buffer stores provides connections between duplex lines and digital trunks in dependence on voice activity in said duplex lines. The disclosure is substantially covered by the contents of Specifications 1,526,960, 1,527,370, 1,526,301, 1,530,633 and USA Specification 4,009,343.
Patent GB-1492299-A (GB)
Title: Method for manufacturing chromated electro-galvanized steel sheet
IPC: C25D5/48
Filed: 1975-12-31
Abstract: 1492299 Chromated zinc-plated steel NIPPON KOKAN KK 31 Dec 1975 [22 Jan 1975 28 March 1975] 53237/75 Heading C7B Steel is electro-plated with Zn from an acidic bath containing (A) at least one of the following: 50-700 p.p.m. Cr<SP>3+</SP>, 50-500 p.p.m. Cr<SP>6+</SP>, 50-700 p.p.m. combined Cr<SP>3+</SP> and Cr<SP>6+</SP> with not more than 500 p.p.m. Cr<SP>6+</SP>, 10-2500 p.p.m. Zr ions, and 10-3000 In ions and (B) 50-10000 p.p.m. Co ions, and is thereafter chromated conventionally. An optional pure Zn layer, at least 0.2g/m<SP>2</SP>, may be electro-plated from an acidic Zn bath before chromating. The Zn bath may contain Zn sulphate and/or chloride, an NH 4  salt as conductor, and Na acetate or succinate as pH buffer. The metal ion sources may be; Cr<SP>3+</SP>-SO 4 , NO 3  or Cr/ NH 4  sulphate; Cr<SP>6+</SP>-(bi) chromic acid or ammonium or alkali metal salt thereof; In or Zr-SO 4  or Cl;and Co-SO 4 , Cl or acetate.
Patent GB-1160303-A (GB)
Title: A Tandem Axle Spring Suspension
Inventor: HICKMAN ALBERT FRANK
IPC: B60G11/22
Filed: 1966-11-29
Abstract: 1,160,303. Tandem axle suspension. HICKMAN DEVELOPMENTS Inc. 29 Nov., 1966, No, 53264/66. Heading B7D. Suspension between a vehicle frame and tandem axles 12, 13 comprises a pair of walking beams 21 resiliently connected at 20 between the axles and a cross-rod 36 resiliently connected at 35 between the walking beams, there being a resilient connection between each end of the cross-rod and a longitudinal frame member 10, said connection comprising a wedge-shaped bracket 72 fixed to the cross-rod end, an inverted U-shaped bracket 55 rigid with member 10, and between the brackets a pair of rubber blocks 68 which shear under load. A pair of parallel bars 51 extend between and are welded to brackets 55, ribs 59, 60 strengthening the joints, the said bars 51 having welded thereto transverse angle irons 52 which are bolted to the members 10. Dampers 83 extend between the members 10 and beams 21. Torque arms 90 connect the axles 12, 13 with a frame crossmember 11 and the cross-rod 36, respectively, via rods 91 provided with rubber cushions 95, 96. The connections 20, 35 comprise a pair of semi-cylindrical members provided with longitudinal flanges, the members being clamped around rod 36 or an axle to compress therebetween a rubber bush. Rings welded to the rod or axle limit longitudinal movement of the semicylindrical members and the curved ends of the members are raised to accommodate displaced rubber resulting from the compression. Sideplates extending below and from the member embrace the vertical side walls of the beams 21 and are welded thereto.
Patent GB-1206249-A (GB)
Title: Improvements in or relating to hydraulic reaction means for servo-steering
IPC: F15B9/10
Filed: 1968-11-11
Abstract: 1,206,249. Power-assisted steering mechanism. BENDIBERICA S.A. DIVISION SERVOMECANISMOS. 11 Nov., 1968 [27 Nov., 1967], No. 63346/68. Heading B7H. In power-assisted steering mechanism comprising a steering shaft 2 and a worm spindle 5 coaxially connected by means permitting limited relative rotation, a pair of double-acting reaction pistons 36 are incorporated in the worm spindle 5 in the same plane extending transversely thereof for opposing rotation of the steering shaft 2 to provide " feel," the length of each reaction piston 36 being significantly greater than its diameter to avoid jamming, and only one end of each reaction piston 36 being in instant communication with the servo piston. The reaction pistons 36 are fitted in transverse bores 35 in the worm spindle 5 and each has a notch 37 engaging one of a series of teeth 32 which are formed on the shaft 2 and fit loosely in corresponding internal grooves 33, 34 in the worm spindle. The flank of each tooth 32 has a profile including an involute outer portion and a straight inner portion merging with a rounded root, and the notches 37 and grooves 33 have a corresponding involute portion. A torsion bar spring 3 resists rotation of the shaft 2 relative to the worm spindle 5. A valve sleeve 4 connected by an eccentric adjusting pin 17 to the worm spindle 5 cooperates with grooves 20, 21 in the shaft 2 so that when the shaft rotates relative to the sleeve pressure fluid received at an inlet 40 is directed through one of passages 44, 45 to one of chambers 13, 14 on either side of a combined servo-piston and nut 6, and the other chamber 13, 14 is simultaneously connected to an outlet 42. One end of each bore 35 is open to the passage 44 so that one end of each reaction piston 36 is subjected to the pressure in the chamber 14. Closure members 38 seal the other end of each bore 35, and passages 39 subject that end 48 of each reaction piston 36 to the pressure existing in the chamber 13. Teeth 7 on the nut 6 mesh with teeth 9 on a rocker shaft sector 8.
Patent GB-1505341-A (GB)
Title: Device for separating finished pieces treated in a vibrating finishing machine
IPC: B24B31/073
Filed: 1976-12-22
Abstract: 1505341 Vibratory finishing RENI-CIRILLO S r l 22 Dec 1976 [30 April 1976] 53621/76 Heading B3D A device for separating pieces treated in a vibrating finishing machine of the type having a level annular finishing tank 2 in which pieces 6 to be treated are agitated with particles 7 of a finishing material, comprises a comb-type grille 9 formed by a plurality of elongate elements 10 mutually spaced apart by distances greater than the size of the particles and less than the size of the pieces, the grille having a first portion 11 adapted to fit into a part of the tank so as to substantially span the entire transverse crosssection thereof and a second portion 12 adapted to extend above the tank when the first portion is inserted into the tank, the first portion being inclined to the horizontal when thus inserted so as to deflect the treated pieces upwardly on to the'second portion. The tank 2 is mounted on a tubular body 3 and supported by springs 4 on a base 5 for vibration by a motor which is mounted on the body 3 and rotates eccentric masses around the axis of the tank 2. The comb-like grille 9 of the separating device consists of a plurality of bars 11 which in the first portion 11 of the device are curved and joined at their lower ends by a curved bar 11a. The bars in the second position are, when the device is in use, horizontal and connected to a flat plate 13 for receiving the separated pieces. The grille is mounted on a pair of uprights 14, 15 which are joined by a cross-piece 16 serving as a handle and have T- sectioned guide heads 14a, 15a slidably engageable with guides 17, 18 on the tank. At the end of a finishing operation, the device can be lowered into the tank so that the first portion 11 of the grille forms a ramp up which the finished pieces move on to the horizontal portion 12 and plate 13, the finishing material passing between the bars so as to continue its movement around the tank.
Patent GB-1489400-A (GB)
Title: Aluminium hydroxycarbonate hydrate
IPC: C01F7/77
Filed: 1974-12-12
Abstract: 1489400 Aluminium hydroxycarbonate hydrate MADAUS & CO 12 Dec 1974 [4 May 1974] 53753/74 Heading ClA Basic aluminium hydroxy-carbonate hydrate is prepared by (1) passing simultaneously aqueous solutions of aluminium sulphate and of an alkali metal bicarbonate and/or carbonate into water, the pH being maintained at 6À8 to 7À8; (2) adjusting the pH of the reaction mixture (after precipitation of the product) to 5À5-6À5 using an aluminium salt with an acid reaction in aqueous solution, this pH remaining constant for 2 hours and not increasing above 7 over the course of 15 hours and (d) after standing for at least 15 hours, filtering, washing and drying the precipitated product. In the examples, aluminium sulphate is reacted with NaHCO 3 , and the precipitate thus formed treated with either aluminium chloride or aluminium sulphate.
Patent GB-1072017-A (GB)
Title: Gasket forming compositions
Inventor: SIMONS CHARLES WILLIAM
IPC: C08L11/00
Filed: 1965-12-20
Abstract: A gasket-forming composition comprises a vulcanizable elastomeric polymer of 2-chloro-1,3-butadiene and a curing agent in a volatile organic solvating medium for the polymer, each component of the solvating medium, including any diluent used, having a minimum boiling point of 230 DEG  F. and the total solids concentration being between 50 and 75% by weight.  A plasticizer, e.g. dioctyl phthalate, a peptizer, e.g. a mixture of tetraethylthiuram disulphide and piperidinium pentamethylene dithiocarbamate and an inorganic filler, e.g. clay, may also be present.  The curing agent may be zinc oxide and magnesium oxide and the solvating medium, toluene or xylene. The compositions are cured.
Patent GB-542890-A (GB)
IPC: F23Q1/02
Abstract: 542,890. Igniters for gas burners. RADIATION, Ltd., HOWLETT & CO., Ltd., M. and DOLPHIN, J. Nov. 4, 1940, No. 16069. [Class 75 (iii)]  The operation of a finger-piece m to rotate an abrasive disc or wheel g in contact with a flint h turns a sheet-metal hood v over some of the holes f in a tubular burner d to deflect the gas from the burner into the path of the sparks from the flint. In the apparatus shown burner heats a parallel radiating element e mounted behind a grid c in a frame a carrying a reflector and the igniter is arranged at the opposite end of the burner to that at which gas is admitted. The finger-piece m carries a spring-pressed pin n which as it rotates engages a lever o on the wheel-spindle p and turns the wheel g against the resistance of a spring q. When disengagement occurs the wheel is rapidly rotated by the spring q to produce sparks and on the fingerpiece being released it is returned to its initial position by a spring k.
Patent GB-1160459-A (GB)
Title: Improvements in or relating to Sliding Casement Stays.
IPC: E05C17/22
Filed: 1967-11-30
Abstract: 1,160,459. Sliding casement stays. BASTALtd. and N. E. ELSBURY. 30 Nov., 1967 [2 Dec., 1966], No. 54560/67. Heading E2F. A sliding casement stay comprising a stay arm I pivotally secured at one end to a window sash and a cylindrical stay pillar 7 axially rotatable on a pivot plate 8 secured to a window frame, is characterised in that the stay pillar 7 is fitted with an axially sliding shell 15 having a pair of aligned openings therein adapted to register with the bore 6 of the stay pillar 7 and through which the stay arm 1 slidingly passes, and also having a screwthreaded central bore in the cap 16, which bore is engaged by a milled headed screw 17 for clamping the stay arm I in any position by engagement of the pillar 7 and shell 15 in mutually opposed directions. In a modification (Fig. 5), the shell comprises a sleeve 18 open at both ends and the screw 17 engages a central screw threaded bore 19 formed in the pillar 7. On tighteninig the screw, the sleeve 18 moves axially in the same direction as the axial movement of the screw and the said screwing action simultaneously operates to move the pillar 7 axially in the opposite direction. The stay may also be fitted to the lids of cabinets.
Patent GB-1058410-A (GB)
Title: Pilot burner
Inventor: REED ROBERT DEHART
IPC: F23Q9/00
Filed: 1965-12-23
Abstract: 1,058,410. Gas pilot burners. JOHN ZINK CO. Dec. 23, 1965, No. 54655/65. Heading F4T. A pilot burner for igniting waste gas at the top of a flare stack 10, Figures not shown, comprises a tubular member 26 disposed within the lower end of a tube 18 and forming therewith an annular chamber 29 supplied with gas by a pipe 30. The gas flows through inclined ports 31 in the tubular member 29 and draws air into the tubular member 29 through a pipe 21 extending down the flare stack and having an open lower end. Additional air is drawn into the mixture through apertures 36 in the upper end of the tube 18. The mixture is ignited by a flame moving along a pipe 41 communicating with the tube 18 and adapted to be filled with a mixture of gas and air.
Patent GB-1254535-A (GB)
Title: Latch installation tool
IPC: E04F21/00
Filed: 1968-11-19
Abstract: 1,254,535. Latch installation tool. EMHART CORP. 19 Nov., 1968 [20 Nov., 1967], No. 54761/68. Heading B5L. [Also in Division B3] A latch installation tool comprises a frame including a pair of clamp plates 20, Fig. 1, having opposing laterally spaced clamp faces for engaging laterally opposite faces of a door 12 positioned between the clamp plates and means supporting the plates for lateral movement toward and away from each other, guide means for enabling the frame to be initially aligned with a predetermined longitudinally extending line of reference on the outer edge of the door, clamping means 22 for moving the plates 20, the means 22 and each of the plates having co-engaging cam surfaces, at least one of the cam surfaces associated with each of the plates being so inclined that the plates move towards each other and into clamping engagement with the door faces in response to movement of the clamping means, and a cutter assembly supported on the frame for operably engaging the door to form an opening therein for receiving a part of a latch. The cutter assembly may be a mortice cutter assembly 26 including a support member 120 mounting a bit 114 for axial and rotational movement. The bit 114 is adapted for connection to a power tool. The support 120 has ribs located between adjacent pairs of teeth 76 on the plates 20. The cutter assembly 26 is attached to or released from the teeth 76 by rotation of a lever 125. The assembly 26 is used to make a hole or a series of overlapping holes in the edge of the door by engaging it with a selected pair or selected pairs of teeth 76. After drilling said hole or holes the cutter assembly 26 is replaced by a router assembly 29, Fig. 4, which is releasably attached to the supports for the members 22 by spring-loaded plungers mounted on end stops 148 of the assembly 29. The assembly 29 includes a cutter bit 147 mounted for lateral and axial movement on a U-shaped guide block 164, which is itself mounted for longitudinal sliding movement along rods 150. The router assembly forms a recess for the faceplate of the latch. The clamp plates 20 are provided with apertured bosses 82, 84 to which boring cutter assemblies including drill bits may be attached for forming bores through the door.