baber/WOPTO huggingface dataset:
Patent GB-2152528-A (GB)
Title: Gas purification process
Inventor: BOXHOORN GOSSE
IPC: C01C3/12
Filed: 1984-01-12
Abstract: Process for purifying alkane-containing feed streams by contacting them with one or more metal complexes with intra-crystalline channels according to the general formula:  M<1>a [M<2>XbLc]d (OH)e wherein M<1> represents at least one metal from Group 1b, 2a, 2b, 4a, 7b and/or the nm-noble metals of Group 8; M<2> represents at least one metal from Group 6b, 7b and/or 8; X represents an (iso)cyano-, and/or (iso)cyanato- and/or (iso)thiocyano-moiety; L represents a nitroso-, an amino- and/or a halide-moiety, a, b, c, d and e (when OH is present) provide the electroneutrality; and c and e may equal O. Compounds such as magnesium hexacyano cobaltate and zinc hydroxy hexacyano cobaltate can be used advantageously in the purification of methane by selectively adsorbing carbon dioxide present therein.
Patent GB-2153525-A (GB)
Title: Improvements in atmosphere monitoring
Inventor: YIN CANDIDO CHOO
IPC: G01N30/12
Filed: 1984-01-27
Abstract: A passive monitor for very low concentrations of organic contaminant vapours in an atmosphere uses a holder (1) having a first sampling chamber (2) exposable to the atmosphere and a second desportion chamber (3) and a charge (5) of adsorbent. In one position of the holder, the adsorbent occupies the sampling chamber and upon changing position, the adsorbent occupies the desorption chamber. Desorption chamber (3) can be fitted with gas inlet and outlet connections (12,10 not shown) and place in a heating block to desorb the contaminant vapours for chromatographic analysis. <IMAGE>
Patent GB-2137023-A (GB)
Title: Improvements in or relating to rotors for direct current motors
Inventor: STORZ PETER
IPC: H02K1/26
Filed: 1984-03-09
Abstract: A rotor for a d.c. machine has at least one intermediate layer (20) of insulating material is disposed in a stack (4) of sheet metal rotor laminations (3). This enables the motor electrical characteristics to be selected whilst retaining the same physical parameter such as armature length and coil shape. <IMAGE>
Patent GB-2156149-A (GB)
Title: Dielectrically-isolated integrated circuit manufacture
Inventor: NICHOLAS DR KEITH HARLOW
IPC: H01L21/762
Filed: 1984-03-14
Abstract: An integrated circuit is manufactured with circuit elements formed in dielectrically-isolated semiconductor islands (1,2 etc) which are bounded at least at their bottom by insulating material (20). In the formation of these islands grooves (12) are etched into a major surface (13) of a monocrystalline semiconductor body (11) in such a pattern as to leave semiconductor mesas (14), then dielectrically-isolated islands are formed from an upper part (14') of the semiconductor mesas (14) and a lower part of each semiconductor mesa (14) is subjected via the grooves (12) to a chemical conversion treatment, e.g. oxidation of silicon which converts this lower part laterally over the whole of its width into the bottom insulating material (20) thereby isolating the upper part (14') of each mesa from an underlying portion of the semiconductor body (11). Before the chemical conversion treatment, the side-walls of the grooves (12) may be etched laterally beneath the upper part (14') of each semiconductor mesa, and the side walls of the upper part (14') of the semiconductor mesa (14) may even be masked during the conversion treatment for forming the bottom insulation (20) of the islands. An upper part of the dielectrically-isolated semiconductor islands may be formed by epitaxial growth on the semiconductor mesas. <IMAGE>
Patent GB-2158976-A (GB)
Title: Switching regulator for electrical power supplies
Inventor: COWSLEY DR CHRISTOPHER WILLIAM
IPC: G05F1/62
Filed: 1984-03-30
Abstract: An electrical power supply with a switching regulator uses a switch (TH) responsive to the voltage on a storage capacitor (C) fed by a first rectified a.c. source (D1, D2) to connect selectively a second rectified a.c. source (D3, D4) to the capacitor so as to tend to keep the voltage constant. The voltages of the sources are co-phasal and that of the second is greater than that of the first. The presence of the rectifiers means that when both sources are connected to the capacitor the lower voltage source is effectively disconnected. The switch (TH) is a thyristor which is arranged to become conducting as the voltage of the second source exceeds that of the first unless prevented from so doing by the conduction of a transistor (TR) connected between gate and cathode of the thyristor, the base of the transistor being connected to respond to the voltage on the capacitor. <IMAGE>
Patent GB-2143975-A (GB)
Title: Computerised interactive advertising and information display system
Inventor: BROWN DAVID FRANK
IPC: G06F3/02
Filed: 1984-06-18
Abstract: A computerised interactive advertising and information display system comprising of an optoelectronic sensor unit 1, a main computing unit 3, a mass storage unit 4 and a visual display 5 and appropriate interconnections. The optoelectronic unit detects the presence of observers and permits interaction between an observer and the system without any type of physical contact. <IMAGE>
Patent GB-2153077-A (GB)
Title: Metal detecting apparatus
Inventor: CRONE DAVID
IPC: G01V3/10
Filed: 1984-10-18
Abstract: A metal detecting apparatus comprises a first metal detector (12) having a first sensor coil means (11) and a second metal detector (12) having a second sensor coil means (11). The first and second sensor coil means (11) are disposed in proximity to each other but mutually displaced in a search head (2) of said apparatus. The first and second metal detectors (11) have respective output signal generating means for generating, in use, an output signal in response to at least some metals in the vicinity of the respective search coil means (11), said output signal generating means being connected to a signal comparator means (13) for comparing the first and second output signals and determining the difference therebetween. The apparatus includes comparator output signal monitoring means (14) whereby differences in the respective output signals corresponding to metal assymmetrically distributed with respect to the first and second sensor coil (11) means may be detected. The detectors may be of the pulse coil type in which pulses are fed to the respective coils which are connected to respective inputs of a comparator, the output from which is gated after a delay to an integrator. Alternatively each detector may include a pair of minimum coupled coils or each detector coil may be connected in the frequency determining circuit of an oscillator the output from which is fed to a mixer and the outputs from the mixers being compared in a frequency comparator. <IMAGE>
Patent GB-2154735-A (GB)
Title: Reagent for determining blood glucose content
Inventor: BASAGNI UMBERTO
IPC: C12Q1/54
Filed: 1985-01-16
Abstract: A stable and ready to use liquid reagent for determining the glucose content in blood comprises a glucose-oxidase, (free from catalse), and a nonionic surface-active agent, such as, for example, the polyoxyethylene derivatives, hydroxypolyethylene ethoxydodecane, or the lauryl ether of polyoxyethylene-glycol, as a stabilizer.
Patent GB-2162219-A (GB)
Title: Beam
Inventor: LOVERING DENNIS WILLIAM
IPC: E04C3/06
Filed: 1985-07-23
Abstract: A beam comprises a pair of aluminium extrusions (10, 12) each having a web (14, 16) and a pair of spaced apart abutments (18, 20, 22, 24) extending substantially over the entire length of the web. The two webs (14, 16) are maintained in spaced parallel relationship by a plurality of sets of spacer plates (34, 36) and connecting bolts (38); rotation of a bolt (38) between an associated pair of spacer plates (34, 36) causing the plates to move away from one another into clamping engagement with corresponding facing abutments (18, 20, 22, 24) on the webs (14, 16) and apply tensile loading to those parts of the webs intermediate the abutments.
Patent GB-2164963-A (GB)
Title: Process for making free of shrinkage and felting textile material containing keratin fibres
Inventor: DEINER HANS
IPC: D06M15/564
Filed: 1985-09-06
Abstract: A method for making free of shrinkage and felting textile material containing or consisting of keratin fibres through treatment with at least one polyfunctional aziridine compound, in which the N-atoms of the aziridinyl radicals are linked to C-atoms, in dissolved or dispersed form, in which the treatment bath, in addition to the aziridine compound, contains a polyurethane with groups capable of cross-linking, is disclosed. Through this finishing the treated textiles are given a noticeably improved shrinkage behaviour, whereby above all the area shrinkage is reduced.
Patent GB-2164787-A (GB)
Title: Electron beam apparatus
Inventor: SPICER DENIS FRANK
IPC: H01J37/30
Filed: 1985-09-11
Abstract: Apparatus suitable for exposing a pattern on an electron resist material in integrated circuit manufacture focusses the light image of an appropriately patterned reticle on to a photocathode 4, the emitted electrons being focussed on the workpiece 9. The pattern may be reduced in size by either or both of the light and electron optical systems. Alignment of the electron image with the workpiece is achieved by using an alignment mask 14 and deflecting the electron beam in response to backscattered electrons from the workpiece. The workpiece may be carried on a movable table controlled by a step and repeat system. The electrons emitted from the photocathode are extracted and accelerated by a planar grid 7 (and Fig. 2) parallel to the photocathode, the grid being moved in its plane during exposure of the resist to eliminate shadows due to the grid elements. <IMAGE>
Patent GB-2174902-A (GB)
Title: A solid, oral anticariogenic chewing gum or lozenge
Inventor: LUTZEN CLAUDE ERIK
IPC: A61K8/00
Filed: 1985-11-05
Abstract: A solid, oral, anticariogenic composition in the form of a chewing gum or a lozenge and beyond the conventional chewing gum or lozenge ingredients containing as dental plaque acid-neutralizing ingredient urea in an amount from 0.5% by weight to 80% by weight, based on the total weight of the composition, an optional coating not being taken into account. The composition is used for reducing the risks of dental caries subsequently to eating and drinking as it causes a neutralization of the plaque acids.
Patent GB-2188832-A (GB)
Title: Castor
Inventor: VERHAEG JOHN
IPC: B60B33/02
Filed: 1986-03-26
Abstract: A single-wheeled castor has a brake member (15) pivoted at (18) and an operating member (23) pivoted at the wheel axis (12) and engaged with the brake member so that, when the operating members extends generally horizontally from the wheel axis, a brake element (16) is held in pressure-contact with the wheel. In a modification, operation of the member (23) also locks the swivelling movement of the castor. <IMAGE>
Patent GB-2193609-A (GB)
Title: Phase-modulation detector
Inventor: FOSTER BASIL BERNARD
IPC: H03D3/14
Filed: 1986-08-08
Abstract: A quadrature-type demodulator includes a pair of identical transistor amplifier stages (T1, T2) whose outputs are combined, means for feeding a phase-modulated signal to the input of one stage, means for feeding the same phase-modulated signal via a 90 DEG  phase-shifting network (30) to the input of the other stage, and a self-biassed amplitude-detector stage (T3, T4) to which the combined outputs are applied via a d.c.-blocking capacitor (C1). <IMAGE>
Patent GB-2198015-A (GB)
Title: Decoding apparatus
Inventor: DRISCOLL JOHN PATRICK
IPC: H03M13/23
Filed: 1986-11-15
Abstract: In decoding apparatus for decoding convolutionally encoded data signals, particularly but not exclusively for use in V32 modems, a maximum or near maximum likelihood detector is used. In addition to calculating vectors and associated costs, the detector also provides signals corresponding to leading components of inter-symbol interference thus treating channel distortion at least partly as a secondary process. <IMAGE>
Patent GB-2201361-A (GB)
Title: Manufacturing a heating element
Inventor: BRZECZEK ALLEN ALBERT
IPC: H05B3/52
Filed: 1986-12-15
Abstract: The method of manufacturing a heating element of the type having a spiral heating element 12 contained within an outer conductive sheath 10 which is packed around the spiral heating element with powdered insulating material 18 such as magnesia has the ends of the sheath tube closed by end plugs 20, 22 prior to the conventional rolling and annealing steps. This is made possible by the use of dry magnesia, conveniently silicon treated magnesia, which does not require subsequent heating to drive off moisture, and by forming the end plugs of a resiliently deformable material, such as high temperature silicon rubber, which is capable of withstanding the temperature experienced during the subsequent annealing step. <IMAGE>
Patent GB-2202794-A (GB)
Title: Printing press
Inventor: HANCOCK RONALD
IPC: B41F17/00
Filed: 1987-02-03
Abstract: There is disclosed a printing press for applying printing to a traveling paper web (18), and also a metallic rub-off coating. The press is a web off-set press composed of five colour units arranged in succession along the path of travel of the web, in which the first four printing units (not shown in Fig. 3) are standard units for colour printing, and a fifth unit (15) which applies an impervious coating to selected areas of the underside of the web. A high speed curing or setting device (22) is arranged downstream of the fifth unit (15), and a roller-type coating device (23) is arranged downstream of the curing or setting device (22) for applying metallic silk screen printing ink to the treated impervious coating, the coating device including a rotatably mounted elastomeric applicator pad (28) made of a material which is compatible with the silk screen printing ink. <IMAGE>
Patent GB-2187539-A (GB)
Title: Constant-pressure device
Inventor: CONCINI ROBERTO DE
IPC: G05D16/06
Filed: 1987-03-02
Abstract: A device for maintaining substantially constant the pressure of a liquid in a hydraulic circuit comprises a chamber 2 inside which the liquid is circulated and which communicates with a drain hole 4; the passage of the liquid through the hole is controlled by member 16 having a substantially flat active surface 17 designed to rest on an annular surface portion 15 coaxial with the hole; the member 16 is thrust against the annular surface portion by a spring 8 acting on a deformable diaphragm 7 constituting a wall of the chamber; a ball 19 is located between the diaphragm and the member 16, which presents a concave surface opposite the active surface 17 designed to constitute a supporting seat for the surface of the ball, so as to enable the member 16 to move in relation to the ball, about any axis through the centre of the ball and so provide for substantially uniform supporting pressure between the active surface 17 and the annular surface portion 15. <IMAGE>
Patent GB-2193485-A (GB)
Title: Medico-surgical bag assembly
Inventor: LESTER GRAHAM GEORGE
IPC: A61F5/44
Filed: 1987-07-23
Abstract: A bag assembly eg a urine leg bag 1 is formed of two sheets 10 and 11 welded together around their edge, and an inlet tube 2 of a soft, flexible material eg PVC with its end secured between the two sheets at one edge. To strengthen the inlet tube during the welding operation, a sleeve 4 of e.g. a stiffer PVC is inserted in the end of the tube. A flutter valve 5 may be assembled on the end of the tube so that it is held in place by the two sheets when welded together. An outlet tube 3 is joined to the bag 1 at an opposite edge. <IMAGE>
Patent GB-2197015-A (GB)
Title: Plastic clad timber frames
Inventor: MCDOUGALL BRYAN GARNER
IPC: E06B1/62
Filed: 1987-09-11
Abstract: An elongate frame member for use in constructing door or window frames comprises a main wooden body portion (15) and a plastics cover strip (16) insertable laterally onto the main body portion so that cooperating formation (32, 35) resist removal of the cover strip. A projecting tip 41 can seal eg against a wall. <IMAGE>
Patent GB-2223617-A (GB)
Title: Information display apparatus
Inventor: HUGHES BRIAN JOHN HOWARD
IPC: G09F13/04
Filed: 1988-08-25
Abstract: An information display apparatus for installation in a public place, comprises a map 12 of the local area, a directory 14 of retail and/or service outlets within the area, and a display 22 for advertising information. At the same time as a particular product or service is being advertised on the display 22, lights 20 on the map are illuminated to indicate the locations where the product or service can be obtained. Alternatively or in addition, lights 16 on the directory are illuminated to indicate the retail or service outlets relevant to the information being given on the display 22. <IMAGE>
Patent GB-2230389-A (GB)
Title: Electrical junction box
Inventor: MOLLER CHRISTOPHER
IPC: H01R9/24
Filed: 1989-01-26
Abstract: The familiar round 3- or 4-terminal plastics junction box traditionally used for joining permanent cables in a domestic environment has many limitations, including requiring individual conductors to be stripped to different lengths, and cracking because of the mechanical stresses on the box caused by the need to squeeze in the wires. The invention proposes a novel form of junction box (10) having a plurality of connectors (13) arranged in rows and columns, the connectors in each row or column respectively being in electrical contact and each column or row respectively being aligned opposite a cable clamp or slot (11). The rows and columns need not run perpendicularly. Each connecter includes springs and a bus bar engaged with a cable wire by resilient jaws (6) forced against a chamfered cam by a screw urging levers (6'), by a platen and rubber member or directly. The former equalise the connection forces. Alternatively, a screw-urged wedge is used. Insulation displacement can be used as an alternative. <IMAGE>
Patent GB-2231174-A (GB)
Title: Gas pressure regulator arrangement
Inventor: COOPER KENNETH M
IPC: F17D1/04
Filed: 1989-03-30
Abstract: In a pilot-operated gas regulator arrangement, the risk of an increase in downstream pressure occurring after operation of an overpressure cut off device 14 is obviated or mitigated by tapping the high pressure gas supply for the pilot regulator from the control orifice 16 of the main regulator 12 at a location 21 downstream of the valve seat with which the valve head 24 of the overpressure cut off device cooperates automatically to cut off flow of gas through the gas distribution system. <IMAGE>
Patent GB-2234053-A (GB)
Title: Gas-cycle refrigerator
Inventor: PEARSON STEPHEN FORBES
IPC: F25B9/00
Filed: 1989-07-04
Abstract: A gas-cycle refrigeration apparatus comprises a centrifugal rotary compressor (1), a positive displacement screw compressor (8) driven directly by an electric motor (14), and an expansion turbine (16) which drives the centrifugal compressor at high speed. Interstage coolers (6, 14) are provided after each compressor. The apparatus is able to provide very cold air (e.g. - 50 DEG C) using an electric motor as prime power source. <IMAGE>
Patent GB-2236885-A (GB)
Title: Vehicle tyre fatigue warning device
Inventor: GREENSLADE ERIC
IPC: B60C23/20
Filed: 1989-09-27
Abstract: The device utilises an infra-red signal from an emitter 1 fitted to the rim of the vehicle wheel in circuit with twin sensors 6, 7 of pressure and temperature inside the tyre. An infra-red detector 5 with operating circuit is secured at a fixed location on the vehicle adjacent to the wheel and linked to a warning panel at the driving position. A modification to the tyre valve connector is made to provide pressure tight electrical continuity between the sensors inside the tyre, and the emitter and battery cell on the outside of the tyre. <IMAGE>
Patent GB-2238697-A (GB)
Title: Fishing float attachment means and method
Inventor: POTTER RICHARD ARTHUR
IPC: A01K93/00
Filed: 1989-10-04
Abstract: An attachment for a fishing float comprises a cap 1 having an internal bore 3 arranged to cooperate with one end of a fishing float 8. The cap 1 also has a second bore 6 transverse to the first bore 3 into which is inserted a peg 2. The bore 6 has a slot 7 through which a fishing line (not shown) passes, in use, to engage with the bore 6. The peg 2 is then inserted into the bore 6 thereby trapping the fishing line between the outer wall of the peg 2 and the inner wall of the bore 6. The fishing line is then gripped firmly without causing damage to the line. The position of the cap and therefore of the float on the line may be adjusted by removing the peg 2 from the bore 6, thereby releasing the fishing line and then moving the apparatus the desired position on the line and re-inserting the peg 2 into the bore 6 to grip the fishing line. <IMAGE>
Patent GB-2226198-A (GB)
Title: Controlling play-back level from magnetic disc in dependence on head position
Inventor: O'REILLY JAMES
IPC: G11B5/012
Filed: 1989-10-12
Abstract: A circuit is provided for converting an input alternating signal with varying amplitude, received from a magnetic disc through a read head (102), to an output signal of relatively constant amplitude and enhanced signal to noise ratio. The circuit comprises a variable gain amplifier provided by a digital to analog converter (U1). The input signal received from the read head (102) and a pre-amplifier (104) is fed to the reference voltage pins (14, 15) of the converter (U1) and the output is derived from the current pins (2, 4) of the converter (U1). The gain between the current and voltage pins is varied by a microprocessor (107) selectively applying 8 bit values on the digital input pins (5 to 12) of the converter (U1) as the head (102) moves from track to track. The output from the converter (01) is fed through a filter (106) and a buffer (111). The output from the buffer is fed to a half wave rectifier (110), a peak follower circuit (115) and a filter (117) and a DC output signal is provided on line (103). This may then be supplied, via D/A converter (U40), to microprocessor (107) which may process the signal for display. <IMAGE>
Patent GB-2226167-A (GB)
Title: Improvements in or relating to microcomputers
Inventor: WESTWOOD JAMES ST VALENTINE
IPC: H01R12/72
Filed: 1988-05-17
Abstract: In the combination of a microcomputer (10) and a peripheral device (15) therefor, wherein electrical connection between the microcomputer and the peripheral device is by way of an edge connector (12) in the microcomputer and an array of connectors (22) (for making connection with the contact pads (20) of the edge connector) on the peripheral device, two of the connectors (40) are bridged electrically so that two of the pads (50, 52) of the edge connector (12) are short circuited before electrical contact is made between any other connectors of the array and their corresponding edge connector pads, on insertion, (or prior to contact being broken between other connectors of the array and the edge connector pads, on removal). The microcomputer is provided with circuit means (60) responsive to short circuiting of the said two contact pads to initiate emergency shutdown of the microcomputer. Where the application of voltages to the peripheral device has to follow a particular sequence, the connectors (22) in the array are of differing effective lengths automatically to effect a required sequencing in the application or removal of voltages to the different circuits incorporated in the peripheral device (15) when the latter is interconnected with, or disconnected from, the microcomputer. The connectors (22) may have the same effective mechanical length, but include electrically "active" regions and "dead" regions, to define different electrical lengths. <IMAGE>