baber/WOPTO huggingface dataset:
Patent GB-2099411-A (GB)
Title: Cuprous chloride production from chalcopyrite
IPC: C22B15/00
Filed: 1980-10-06
Abstract: Process for producing cuprous chloride from chalcopyrite by means of a cupric chloride leach utilizing particular processing conditions in order to obtain relatively high cuprous chloride concentrations. The processing conditions are maintained so as to conduct the leach in accordance with the general reaction:  (3X+12Y) Cu<s++>s + CuFeS<u2>u + 8YH<u2>uO  (4X+12Y) Cu<s++>s + XFe<s++>s + (2X-2Y) S` + 2YSO<u4>u = + 16YH<s+>s + (1-X)CuFeS<u2>u  under reaction conditions such that "X" is maintained from about 0.35 to about 0.9, "Y" is maintained from about 0.075 to about 0.35 and the sum of 3X + 12Y is initially greater than 3.
Patent GB-2122270-A (GB)
Title: Sliding guide part for slide pieces moved on guide rails
Inventor: KIEFFER GERHARD
IPC: F16C29/02
Filed: 1982-06-22
Abstract: The sliding guide part 1 for sliding parts made of elastic plastics moved on guide rails, more particularly as linings for guide shoes of lift cages and the like consists of a plate shaped part provided with protruding mounting studs 6, which is provided with longitudinally extending recesses 3, 4 for the formation of the so-called film hinging in order to obtain a U-shaped slide piece. The longitudinally extending cut-outs are formed as deep grooves (3, 4) of trapezoidal cross-section. The thickness of the connecting flanges at the narrow base of the trapezoidal groove is 1/6 to 1/10 of the thickness of the plate part separated by the longitudinal grooves (3, 4). <IMAGE>
Patent GB-2102369-A (GB)
Title: Discharging goods from rollerways
Inventor: DUTTINE WALTER
IPC: B65G47/54
Filed: 1982-06-22
Abstract: A device for diverting piece goods from a roller conveyor includes a vertically movable part 8 provided with rollers 9 around which runs a belt 7 for intercepting and diverting the goods. The part 8 is movable vertically by means of a mechanism operated through an eddy current brake from a driven pulley 14.
Patent GB-2106098-A (GB)
Title: Preparation of 2,4-diamino-5-/3',4',5'- trimethoxybenzyl/pyrimidine
Inventor: BECK IVAN
IPC: C07C255/53
Filed: 1982-06-24
Abstract: 2,4-Diamino-5-/3',4',5'-trimethoxybenzyl/pyrimidine is prepared by reacting alpha-/3,4,5-trimethoxy-benzal/-beta-methoxypropionitrile with a diethylene glycol monalkyl ether of the formula HO-CH2-CH2-O-CH2-CH2-OR (wherein R is an alkyl group having 1 to 4 carbon atoms) at 60 to 90 DEG C in the presence of an alkali metal alkoxide, and reacting the obtained benzyl isomer of the formula   <IMAGE> (optionally without separation) with guanidine in the presence of an alkanol having 4 to 8 carbon atoms.
Patent GB-2106642-A (GB)
Title: Position sensor
Inventor: CULSHAW BRIAN
IPC: G01D5/34
Filed: 1982-08-23
Abstract: In order to achieve accurate sensing of the position of the edge of a probe or cutter shown in two extreme positions 4A and 4B sweeping out a circle 4C, use is made of fibre optics F11 and F01 and F12 and F02 arranged in opposed pairs. The probe or cutter is arranged such that its effective centre is half-way between the axes of the opposed pairs of optical fibres by equalizing the output signals on the fibres F01 and F02, and the value of this signal is then indicative of the edge position of the diameter of the swept out effective cutting circle 4C. The optical signals are preferably modulated. A lens assembly may be used to spread the beams of light traversing the gap 2. <IMAGE>
Patent GB-2126069-A (GB)
Title: Animal supporting devices
Inventor: THOMAS RYAN MEWRIC
IPC: A61D3/00
Filed: 1982-08-26
Abstract: A sheep support cradle provides a V-shaped trough sloping downwards from one end. The cradle has a frame with cross-strutting (3) at the ends which defines the angle of the V and between which extend walls (4) forming the trough. These walls do not meet; they leave a gap (6) to receive the ridge along the sheep's back. The sheep is further located by lateral ribs (5) supported above the outer edges of the trough walls, and the cross- strutting at the lower end acts to prevent the sheep sliding down out of the cradle. <IMAGE>
Patent GB-2106748-A (GB)
Title: Telephone transducers
Inventor: CHARLESWORTH DAVID VALENTINE
IPC: H04R11/00
Filed: 1982-09-10
Abstract: An electro-acoustic transducer is assembled from a cup-shaped rear cover 20 having a base divided along a chord 60 into a major segment (61) for receiving a driving unit 30, 34 and a terminal receiving minor segment 62; a yoke and coil sub-assembly including a cruciform yoke plate having a magnet 50 at its centre with one pair of defining pole pieces and carrying coils 30, 31 and with the other pair of arms 32, 33 having through-holes 52; an armature 34 formed with depending bearing means, that permit the armature 34 to rock on the magnet 50, and a pair of torsion arms terminating in fixing ears 35, 36; means such as screws 59 for securing the ears 35, 36 and the arms 32, 33 to lands 40, 41 of the major segment (61); connector terminals 45 extending through said minor segment 62 and electrically connected to the coils 30, 31; a diaphragm 23 adhesively secured at its centre to a connecting rod 34a attached to the armature, and a front cover 10. <IMAGE>
Patent GB-2121409-A (GB)
Title: Process for the preparation of 1,1-bisphenyl-2-haloalkan-1-ols
Inventor: CZYZEWSKI JERZY
IPC: C07D249/08
Filed: 1983-05-23
Abstract: A substituted alkene of formula:   <IMAGE> in which R and R<1>, which may be the same or different, are hydrogen or alkyl, preferably C1-C4 alkyl, X, Y and Z are each independently hydrogen, fluorine or chlorine is reacted with chlorine or bromine in aqueous acetonitrile preferably in the presence of hydrogen peroxide to produce the corresponding halohydrin. The halohydrins so formed are useful intermediates for fungicides, e.g. in which the aliphatic halogen atom is replaced by 1,2,4-triazol-1-yl.
Patent GB-2123863-A (GB)
Title: Dandy-roll assembly for top- draining a wet web on a fourdrinier machine
Inventor: HOLZ EMIL
IPC: D21F1/48
Filed: 1983-07-08
Abstract: A dandy-roll assembly 26 for top- draining a wet web 22 carried on a Fourdrinier wire 18, comprises a screen drum or dandy roll 28 which is rotatably mounted and adapted to be placed on top of the wet web and a suction box 70 arranged in the ascending circumferential region of the rotating drum or roll on the outer periphery of the latter. The screen drum or roll comprises a filter mesh 46 supported on an inner cylinder 34 and has at least one circumferentially extending channel formed therebetween. <IMAGE>
Patent GB-2130552-A (GB)
Title: Cord or wire storage device
Inventor: MAHAN JOHN A
IPC: H02G11/02
Filed: 1983-10-11
Abstract: A spool for storing the excess length of cord-like material such as electrical wire while such material is in use comprises a hub 24, a pair of flange members 14, 16 extending transversely of the opposite ends of the hub and defining with the hub a narrow chamber 44 having a peripheral opening for winding a single spiral of the material on the hub within the chamber and spaced apertures 18, 20 extending through at least one of the flange members and opening into the chamber for receiving and releasably securing first and second spaced portions of the cord to the flange member. The hub is preferably substantially rectangular in cross section with rounded transverse end portions, and the apertures 18, 20 are preferably disposed remote from and on different sides of the hub. The apertures preferably have a channel portion 52 leading into an elongated portion 50, the wire having to be turned edgewise for insertion into the channel 52 and then twisted through 90 DEG  to seat it in the portion 50. One aperture may be in one flange member with the other aperture in the opposite end of the other flange member. The wire may be oblong in cross section. <IMAGE>
Patent GB-2131067-A (GB)
Title: Improvements in drilling fluids
Inventor: CHEESMAN GEOFFREY CHRISTOPHER
IPC: C09K8/035
Filed: 1983-11-03
Abstract: The addition of minor proportions of a polymer, which is insoluble in water, to oil-based or water-based drilling fluid improves the rheological properties of the fluid and/or improves the fluid loss control of the fluid. The drilling fluid may be a drilling mud, a workover and completion fluid or other wellbore fluid. Examples of suitable polymers and drilling fluids are described, and the polymer is conveniently added in the form of an aqueous dispersion of the polymer.
Patent GB-2132430-A (GB)
Title: Phase locked loop circuit
Inventor: SIGIYAMA HIROYUKI
IPC: H03L7/14
Filed: 1983-11-11
Abstract: A phase locked loop circuit is disclosed which is usable for processing a reproduced digital signal in a digital audio and video system. In addition to a phase detector (12), a low-pass filter (14) and a voltage controlled oscillator (16), the phase locked loop includes frequency detectors (20, 22) for respectively detecting an increase of the output oscillation frequency of the voltage controlled oscillator beyond a predetermined upper limit and a decrease thereof below a predetermined lower limit, in which case control signals are generated to maintain the output frequency between the said limits. Output frequency drift to those limits is envisaged during periods of input signal dropout and faster reacquisition is enabled by the prevention of drift in the phase lock loop. <IMAGE>
Patent GB-2151152-A (GB)
Title: Synthetic resin extrusion apparatus
Inventor: NAKAMURA KENSAKU
IPC: B29C48/425
Filed: 1983-12-14
Abstract: A synthetic resin extruder incorporates, intermediate the ends of the resin feed screw (3), a kneading unit (12). In the region of the unit (12), the thread of the feed screw is grooved to form teeth (21) which mesh with corresponding teeth of a pair of rotatable satellite shafts (22) located in chambers (27) on each side of the feed screw in the kneading unit (12). The resin being fed along the feed screw is kneaded between the intermeshing teeth. The kneading unit (12) is formed from two blocks (19, 20) which may be separated to allow the satellite shafts (22) to be inserted into or removed from their associated chambers (27). The degree of kneading may be modified by replacing one or both satellite shafts (22) by a stationary shaft (28, Fig. 7) formed with a concave side wall portion forming a continuation of the feed screw passage. <IMAGE>
Patent GB-2155222-A (GB)
Title: An ignition control device
Inventor: CHADWICK BERNARD HUGH
IPC: F23Q3/00
Filed: 1984-02-29
Abstract: An ignition control device for a gas burner includes a logic circuit (A) which disenables an oscillator (39) of a spark generator when a flame is sensed at the burner and re-enables the oscillator if the flame is subsequently extinguished. If ignition has not occurred within a safety time interval a further logic circuit (E) acting through a triac (35), causes a solenoid valve to close shutting off the gas supply. Circuit (A) maintains the oscillator in an enabled condition even when the gas supply has been shut off thereby to provide a warning to the user. <IMAGE>
Patent GB-2144485-A (GB)
Title: A drive mechanism for a closable opening such as a window or a door
Inventor: PRINZ HUBERT
IPC: E05B17/00
Filed: 1984-07-31
Abstract: A drive mechanism for a window or a door, of the type comprising a drive pinion (16, 116) meshing with a rack in the form of an apertured drive rod (12, 112) guided in a guide rail (10, 110) is disclosed, in which, in order to secure the movable components (12, 112, 16, 116) in a preliminarily selected position, for example, a centralised position, securing means (24, 140) are provided. In one embodiment the securing means comprise a slide plate (24) carried by the pinion (16) and having a projection (28) for engagement in a cooperating recess (30) in the pinion housing, from which it can be disengaged upon insertion of a key (36) for turning the pinion. In another embodiment, a shear pin (140) engages into one of the apertures (122) of the drive rod and is braced against the guide rail (110) and/or against the mechanism housing (114), and is ejected into the open by a tooth (120a) of the pinion (116) after shearing off has occurred by turning the pinion. <IMAGE>
Patent GB-2162935-A (GB)
Title: Fluid beds
Inventor: BRADSHAW WILLIAM
IPC: F28D13/00
Filed: 1984-08-09
Abstract: A fluid bed is divided into eight zones by a series of radiator plates (1 to 9) of a heat exchanger. Fluidising gas enters each of the zones at a temperature T, and the line 14 shows how the temperature of the material within each zone decreases. Water enters the radiator plate at 18 and leaves at 19, successively flowing through the plates, with the water temperature in each of the plates being shown by line 16. The mean temperature (20) of the material in the fluid bed is typically 65 DEG C, but the water flowing through the heat exchanger may leave at 19 at a temperature which is at or above 100 DEG C. <IMAGE>
Patent GB-2145169-A (GB)
Title: A magnetic fluid seal
Inventor: O'GRADY DR KEVIN DERMOT
IPC: F16J15/43
Filed: 1984-08-15
Abstract: A magnetic fluid seal comprises a stator including poles pieces 16, 18 and permanent magnets 20, a movable magnetic element 12, and bands of a magnetic fluid between the stator and the movable element. A pressurized gas introduced into an annular space 50 between a pair of adjacent bands, is maintained at a pressure equal to or slightly greater than the pressure on that side of the seal to be exposed to a liquid environment 58 held at a higher pressure than a gaseous environment at the other side of the seal. <IMAGE>
Patent GB-2151736-A (GB)
Title: Wire holder/coupling
Inventor: MERRY DOUGLAS ARTHUR LITCHFIEL
IPC: E04H17/04
Filed: 1984-12-17
Abstract: A holder for eg coupling wires comprises an open-ended tubular housing 10 through which the wire extends; openings 11,12 in the side wall of the housing allow the free end of the wire to be bent around one end of the housing and re-enter the housing through one of the openings. <IMAGE>
Patent GB-2155514-A (GB)
Title: Throughflow treatment control
Inventor: REED COLIN MICHAEL
IPC: F26B25/00
Filed: 1985-03-04
Abstract: A process in which material (20) is passed effectively continuously through a gaseous treatment chamber (10) by way of at least one open port (12) is improved by applying gas curtains across the material path to form externally adjacent the port a buffer zone (50) between the chamber interior and the surrounding atmosphere, which zone acts generally to balance the gaseous outflow otherwise occurring through the port. The buffer zone is preferably formed by and between two curtains serially spaced nearer to and further from the port, the curtains being respectively formed with gas drawn from without and within the zone. The zone is suitably sustained in varying conditions by control of curtain flow rate in response to a zone parameter such as temperature.
Patent GB-2158404-A (GB)
Title: A system for driving a golf course caddie cart
Inventor: FUKUDA TOMIICHI
IPC: A63B55/60
Filed: 1985-03-20
Abstract: The system comprises a rail 1 of substantially U or bottle-shaped cross-section embedded in the ground so as to be flush with the surface, on which rail a caddie cart runs provided with a vertical shaft 13 to which is connected a set of wheels adapted to rotate as they contact the inner surface of the rail wherein, for stability and to prevent cart overturn, rollers 18, 20 contact the inner horizontal and vertical surfaces of the rail. A motor 31 is provided for activating a slidable shaft 24 which carries a catcher for gripping a tow-rope 28 which is arranged in endless form around the golf-course within the rail and supported by means 33 comprising a support and a guide roller 29, 30. <IMAGE>
Patent GB-2158195-A (GB)
Title: Torque transmission device
Inventor: ATKIN HOWARD STUART
IPC: F16D3/70
Filed: 1985-04-29
Abstract: A torque transmission device suitable for use as a sprocket device to transmit torque between a drive shaft and a flexible endless track comprises a hub member to which drive torque may be applied, two part-circular support members 12 securable together to form an annular support member which extends around the hub member, and a plurality of resilient bushes 13 circumferentially spaced apart to interconnect the hub and annular support members. Preferably the part-circular support members are secured together at least in part by an annular member such as an annular sprocket wheel 14. <IMAGE>
Patent GB-2182683-A (GB)
Title: Cone winding spindle
Inventor: TAYLOR JAMES DOVE WILFRED
IPC: B65H54/54
Filed: 1985-11-16
Abstract: A spindle for winding thread onto conical cone centres comprises a conical support (4) for a cone centre (1), means for engaging the cone (slots 3 receiving inwardly directed cone centre flanges) to transmit rotational drive thereto and a latch (retractable ball 5) adapted to releasably secure a cone centre upon the spindle. The ball (5) retracts into a recess (11) when a button (14) is pressed. <IMAGE>
Patent GB-2168878-A (GB)
Title: Radiocommunication system
Inventor: SPAENJERS JOANNES HENDRIK PALM
IPC: H04L27/20
Filed: 1985-11-22
Abstract: A radiocommunication system (CMR) includes several base stations (e.g. BS1 and BS2), a concentration station (CS), a digital telecommunication exchange (MTX) and mobile stations such as MS. The mobile stations (MS) are connected to the base stations (Bs1/2) via radio links. Each base station comprises an antenna connected to an electronic unit (ERU) including a transmitter, a receiver and a local control unit to control the operation of the transmitter and receiver. The electronic units (ERU) located in a predetermined area are all connected to the concentration station (CS) via analog telecommunication lines. The purpose of the concentration station is to convert analog (voice and binary data) signals coming from the electronic units into digital signals which are then multiplexed and transmitted on the digital telecommunication line to the digital telecommunication exchange (MTX) and vice versa. <IMAGE>
Patent GB-2169018-A (GB)
Title: Apparatus for producing viscous hydrocarbons utilizing a hot stimulating medium
Inventor: TOMA PETRE
IPC: E21B43/24
Filed: 1985-12-02
Abstract: In a well completion apparatus for producing viscous hydrocarbons from a formation 12 comprised at least in part of unconsolidated sand particles the formation is thermally treated to enhance the flowability of the viscous hydrocarbons. The resulting hydrocarbon mixture together with sand particles, is passed through a filter 28 in which sand and other solid particles are retained. The latter can be periodically removed from the well and cleaned of solid matter. The filter 28 has an inner filter stage comprising a compressed mass of metal fibres, and an outer metal sheath having openings of a greater size than the passages through the inner mass of metal fibres. A plurality of lateral braces 23 extend from an inner perforated conduit 21 and divide the filter 28 into discrete segments. <IMAGE>
Patent GB-2169709-A (GB)
Title: Electrochemical sensor
Inventor: BERGMAN IMANUEL
IPC: G01N27/27
Filed: 1985-12-02
Abstract: An electrochemical sensor for determining the mean concentration of gas in a space such as a flue. The sensor has an elongated gas-permeable electrolyte container disposed across the required space. In the container, the sensing electrode can be a wire many times longer than the container, spirally wound, to contribute sensing signals throughout the length of the container. An inflatable tube inside the container, may press the wire or spiral against the container so that the gas permeates to it quickly. The sensing electrode may be porous and at least one other electrode must be present in the container.
Patent GB-2186385-A (GB)
Title: Prompting apparatus
Inventor: SHOESMITH MARK EDWARD
IPC: G03B21/132
Filed: 1986-02-11
Abstract: Prompting apparatus for a speaker speaking to a relatively small audience has a support 1 having a card holder 9 in which cards 10 are inserted. A mirror 11 reflects an image of the card 10 upwardly and is mounted on the support 1. An angled glass 13 positioned above the mirror 11 reflects an image of a card 10 towards the speaker behind the glass 13. A lens 12 may be disposed in the optical path between the card 10 and the angled glass 13. <IMAGE>
Patent GB-2189758-A (GB)
Title: A feed bench for feeding articles on to a main conveyor belt at an angle thereto
Inventor: CANZIANI FRANCESCO
IPC: B65G39/12
Filed: 1986-05-01
Abstract: A feed bench is described for use in a transport and sorting plant, having a rotatable belt (1) mounted on a first group of rolls (2,4,6) having parallel axes, a centering roll (10) forming an angle  beta with said first group rolls and a pair of fixed bars (8) forming with said first group rolls an angle  alpha  smaller than  beta . The feed bench is able to feed articles to be sorted onto a main conveyor belt, letting these articles in at an angle onto the main conveyor belt. <IMAGE>
Patent GB-2177201-A (GB)
Title: Process and apparatus for the determination of thermal properties
Inventor: DANKO GYORGY
IPC: G01N25/18
Filed: 1986-05-09
Abstract: In simultaneously determining the thermal conductivity and thermal diffusivity of a material a probe (2) including a heater (3) and temperature sensors (4) is inserted into the material whereby spherical isotherms (5) are generated. The heater acts as a point heat source and the sensors are arranged along a straight line passing through the source. The required properties are determined using the heat input and resulting temperatures. The method is used to determine the properties of rock by inserting the probe into a drilled hole (1). The method is also used with granular materials e.g. seeds. 
<IMAGE>
Patent GB-2191441-A (GB)
Title: Apparatus for casting paving blocks in situ
Inventor: CHURCH ALAN BRIAN
IPC: B28B19/00
Filed: 1986-06-12
Abstract: A settable material such as cement, concrete or the like is applied to a surface to create in situ on that surface a paved area having a plurality of shaped paving segments each spaced at its upper surface from neighbouring segments by a channel whose area increases progressively from its base and into which mortar may subsequently be applied. The apparatus used comprises a hollow frame (1) defined by elongate boundary members (2) and divided into discrete sections by at least one elongate member (3) of a shape which in cross-section increases progressively from the base to the top thereof. The arrangement is such that settable material can be cast into the frame sections with the frame located on a ground surface to create in situ a paved area. <IMAGE>
Patent GB-2178850-A (GB)
Title: Apparatus and method for determining luminosity of hydrocarbon fuels
Inventor: GREEN GARY JAMES
IPC: G01N33/22
Filed: 1986-07-08
Abstract: In apparatus for injecting a controlled stream of hydrocarbon liquid into a concurrently flowing stream of gas in a Venturi forming droplets of the hydrocarbon liquid, the droplets are subsequently combusted and the level of radient emissions is measured photoelectrically, optionally at a series of locations along the direction of flow. Results obtained are useful in predicting service life of combustor walls in jet engines and the like. There is reference to use of photographic, photodiode, photomultiplier and pyroelectric detector means.
Patent GB-2178784-A (GB)
Title: Improved drag type drill bit
Inventor: SHORT LOT WILLIAM
IPC: E21B10/573
Filed: 1986-08-04
Abstract: A drag-type drill bit comprises a bit body 90 having an operating end face and a multiplicity of superhard cutting elements 104 interlocked to the bit body. The cutting elements define a multiplicity of cutting areas 102 dispersed over the operating end face of the bit body in a pattern adapted to cause the cutting areas to cut an earth formation to a desired three-dimensional profile as the bit body is rotated. The cutting areas 102 have back rake angles which become more negative with distance from said profile. <IMAGE>