baber/WOPTO huggingface dataset:
Patent GB-2071303-A (GB)
Title: Heat transfer apparatus
IPC: F28F3/10
Filed: 1980-03-10
Abstract: In a heat exchanger of the separable plate type, comprising a pack of plates each having a gasket groove with a base 3 and side walls with one side wall being formed with lateral undulations 6 such that the groove has wider portions extending beyond the side wall of the corresponding groove in the adjacent plates in the pack, and with the gaskets 7 being formed with a series of projections 10 engaging in matching apertures 9 in the base 3 of the gasket groove adjacent the laterial undulations, the gasket projections 10 extend also through matching apertures 11 formed (e.g. in a corrugation 4) in that portion of the underlying plate lying outside the corresponding side wall of the gasket groove. <IMAGE>
Patent GB-2048542-A (GB)
Title: Method for driving liquid crystal display elements
IPC: G09G3/18
Filed: 1980-04-11
Abstract: In a method for driving a liquid crystal display panel to give an analogue display of three quantities, the elements are driven over 1/3-duty periods by applying four voltage waveforms to the set of electrodes formed on one substrate, and at least five voltage waveforms to the other electrode set, said electrodes being divided as shown. In this driving method only one part of the driving LSI circuit is sufficient for a simultaneous analogue display of e.g. hours, minutes, and seconds. <IMAGE>
Patent GB-2077790-A (GB)
Title: Dual flush water closet cisterns
IPC: E03D1/14
Filed: 1980-04-30
Abstract: In a dual-flush valve-discharge cistern the hollow stem 8 of the discharge valve 10 carries a lower float 9, fixed thereto; an upper float 14-15, slidable thereon; and a stop 11. The stem 8 slides on a fixed air inlet tube 5. The slidable float 14-15 is held raised by gravity latch 7. Latch 7 and stem 8 have respective pulling lugs 7C, 12. For a full flush lug 12 alone is raised to open valve 10 (leaving float 14-15 latched inoperative) and released, the valve being held open by float 9 until the water level falls to the lower float level. For a partial flush both lug 12 and lug 7C are raised so that as the water level falls float 14 slides down stem 8 until it reaches stop 11, whereafter its weight overcomes the buoyancy of float 9, i.e. the valve 10 closes as the water level falls to the level of stop 11. <IMAGE>
Patent GB-2077646-A (GB)
Title: Drawing tool
IPC: B21C3/14
Filed: 1980-06-18
Abstract: A tool for drawing items with lubricant under pressure on a drawing bench comprises a housing (1) accommodating a clamped conical split bushing (2) inside which series- arranged in the direction of motion of an item (3) being drawn and contacting one another are a pressure bushing (4) and a working die (6). A sealing floating bushing (8) is situated inside a bore of the clamped conical split bushing (2) in a manner to envelope the pressure bushing (4) and a 0.1 to 0.3-th part of the length of the working die (6). <IMAGE>
Patent GB-2053326-A (GB)
Title: Methods and arrangements for casing a borehole
IPC: E21B43/10
Filed: 1980-07-02
Abstract: Strip steel (4) is wound around a mandrel (5), which may be a standard length of drill pipe, to form an axially elongate resilient helix (6) in a condition of torsional stress. The stressed helix is clamped onto the mandrel with releasable clamps (8). The clamps are released when the helix is at a desired depth so that the stored energy tends to unwind the helix to increase its diameter, whereby the helix bears against the borehole wall to provide a self-supporting casing. The clamped helices may pass down through the diameter of previously cased borehole lengths and it is thus possible to form a self- supporting cased borehole of non- reducing diameter. <IMAGE>
Patent GB-2068485-A (GB)
Title: Testing device
IPC: G01L5/28
Filed: 1980-10-15
Abstract: A device for testing a hydraulic circuit including a actuator cylinder and piston therefor such as a master cylinder comprises a unitary assembly (12) which is adapted to be clamped (by 15) to the cylinder to be tested and which engages the piston for pressurizing the associated hydraulic circuit. Sensing means (16) and (17) are incorporated for sensing the amount of travel of the piston of the actuator during a given time period and for sensing the pressure applied to the hydraulic circuit. In this way leaks or flaws in the hydraulic system may be readily detected. <IMAGE>
Patent GB-2089418-A (GB)
Title: Key with forward facing bit for safety locks
IPC: E05B19/00
Filed: 1980-12-17
Abstract: A key for safety locks has a forward facing bit and comprises a shaft 3, a bit portion 4, eccentrically mounted or formed on one end of the shaft 3 the bit 4 being in the form of an offset, substantially flat, plate having two ribs 5 extending parallel to the major axis of the shaft, the ribs 5 being formed on the face of the plate 4 closest to the axis of the shaft 3. The key is milled to code it, giving reference points 8, 9, 10, 11, 12 and 13. <IMAGE>
Patent GB-2070972-A (GB)
Title: Exhaust gas filter
IPC: F01N3/021
Filed: 1981-02-23
Abstract: A filter for removing carbon from the exhaust flow of an internal- combustion engine comprises a housing 1 with inlet and outlet connections 2 and 3 enclosing a plurality of spaced, parallel, supporting tubes 4 which are provided with through-openings and which the exhaust flow enters in a radial direction and leaves in an axial direction, which tubes are wound with yarn of spun fibres of silicon dioxide, suitably in a criss-cross winding. The yarn may be impregnated with an inorganically based temperature- resistant agent. The tubes may be secured at one end in the housing and provided with radially outwardly directed peripheral formations such as corrugations and/or made telescopic. <IMAGE>
Patent GB-2072753-A (GB)
Title: Electrical control of carburettor throttle stop pneumatic actuators
IPC: F02D31/00
Filed: 1981-03-10
Abstract: The motor 41 positioning the minimum opening throttle stop 60 has a continuous connection 48, 49, 50 to the induction passage 1 and a connection 70, 71, 72, 73 to atmosphere controlled by a solenoid valve 75 fed with variable duty ratio pulse signals. The duty ratio is dependent on engine speed, temperature and deceleration and operation of engine accessories to provide the desired minimum throttle valve opening, e.g. to set the engine idling speed. <IMAGE>
Patent GB-2096405-A (GB)
Title: A waveguide joint
IPC: H01P1/06
Filed: 1981-03-27
Abstract: A waveguide joint for permitting swivel movement between two adjacent similar waveguides is provided with an axis of rotation (7) which is aligned with the longitudinal direction of the two waveguides, but which is off-set from their centre lines (8), (9). This results in eccentric rotation of one waveguide relative to the other so that any angular displacement is accompanied by transverse movement. It has been found that this form of movement produces equal and opposite reactive discontinuities at the joint and minimises resistive losses to a level which has previously been associated only with relatively complex and cumbersome multi interface joints. <IMAGE>
Patent GB-2096762-A (GB)
Title: Optical fibre sensor device
IPC: G01L1/24
Filed: 1981-04-09
Abstract: A sensing arrangement comprises a source of coherent radiation, e.g. a laser (2), and a modulator (10) for forming from it a train of optical pulses carried by an optical fibre lead to a sensor (11), where they pass to the sensor output through two parallel paths one of which includes an optical fibre responsive to a parameter to be measured. The sensor output is connected via another optical fibre lead to a photodetector (7), which also receives the output from e.g. a Bragg cell 6, fed by the laser 2, and feeds a circuit which compares the relative phase shifts of the pulses traveling respectively through the two paths of sensor 11. Since the phase shifts of the optical fibre leads are common to both pulses, their effect is eliminated. <IMAGE>
Patent GB-2075868-A (GB)
Title: Method of treating flue gases
IPC: B03C3/013
Filed: 1981-05-01
Abstract: To ensure that any sulphur dioxide present in flue gases is converted to sulphur trioxide which in turn may form alkali hydrogen sulphate on the surface of dust or other particles, e.g. of alkali silicate, entrained in the gases, an oxygen-supplying compound, such as hydrogen peroxide or an alkali metal peroxide, preferably in aqueous solution, is supplied to the gas. The alkali hydrogen sulphate is more electrically- conductive than the alkali silicate and consequently permits more effective dust separation in a subsequent electrostatic precipitator.
Patent GB-2101240-A (GB)
Title: Synchromesh arrangements
Inventor: MAINA MARIO JOSEPH
IPC: F16D23/06
Filed: 1981-07-01
Abstract: A synchromesh arrangement (10) suitable for heavy-duty applications includes a sliding-sleeve clutch (20) formed with detent recesses (32) of predetermined ramp angle, and spring-loaded detent balls (26) in hub (12) which co-operate with the respective detent recesses for constant-load energisation of a ring- type primary synchroniser element (38). This develops a synchronising drag torque component at an intermediate element (46) which, by the action of a pair of ramp surfaces (50, 54) co-operating, e.g. via rollers (56), thereby produces a clamping action at a plate-type secondary synchroniser element (62) of high drag torque-inducing capacity. Any excess loading on the clutch (20) is taken direct on to baulking teeth (74) of the secondary synchroniser element, whereby the primary synchroniser element is protected from overloading. It is suggested that the baulking teeth may be omitted in some manual-shift arrangements. <IMAGE>
Patent GB-2101529-A (GB)
Title: Decorating articles by transfer printing
Inventor: TURNER TERENCE ARTHUR
IPC: B41M5/035
Filed: 1981-07-14
Abstract: An article is decorated by applying a dye-receptive coating 28 of a non-linear, cross-linked polyester or a non-linear, cross-linked thermosetting acrylic resin, preferably with added catalyst, and then using a dye diffusion transfer technique to apply a pattern to the coating, the dyestuff being an anthraquinone or quinoline dyestuff modified by addition or substitution of at least one substituted reactive group per molecule, the dyestuff and coating material being so selected as to ensure chemical bonding between them. <IMAGE>
Patent GB-2083634-A (GB)
Title: Vehicle wheel turntable
IPC: G01B5/255
Filed: 1981-08-17
Abstract: A turntable 1 for vehicle wheels comprises members 2, 3 separated by an element 4. The member 3 is rotatable relative to element 4 and member 3 and element 4 are slidable as a unit relative to member 2 whereby relative rotation between member 3 and element 4 is unaffected by forces tending to move the turntable laterally during turning of the vehicle wheel to check a particular characteristic thereof. Relative rotation between member 3 and element 4 may be facilitated by ball bearings 10 in groove 9 on the underside of member 3, or by the use of a lubricant between member 3 and element 4, or by making at least one of the confronting surfaces thereof from low friction material. The underside of element 4 may have a pin 13 which engages in a slot 12 in member 2 to allow sliding movement therebetween. The rim of element 4 may be provided with a scale 15 and member 3 with a pointer 16. <IMAGE>
Patent GB-2090569-A (GB)
Title: Hydraulic power-assisted steering system for motor vehicles
IPC: B62D5/08
Filed: 1979-06-29
Abstract: The steering system comprises a pump, a steering valve, a feed line 1 extending from the pump to the steering valve and a return line 3a, 3b extending from the steering valve to a reservoir for the hydraulic fluid. In order substantially to obviate flow noises in the system, provision is made for damming the return flow of the hydraulic fluid by arranging a throttle valve in the return line 3a, 3b. The throttle valve has a valve piston which comprises a pilot piston 16 and a ball 15 and which is movable in a valve chamber 18. The pilot piston 16 is operative as a ram and is guided in a bore 2 connecting the chamber 18 with the feed line 1. A valve seat 21 for the ball 15 is formed in the chamber 18 and a spring 17 in the chamber urges the ball 15 with the pilot piston 16 into a position in which the return stream can flow unthrottled through the chamber 18. A by-pass line 19, having a fixed throttle 20, interconnects the valve chamber 18 with the portion 3b of the return line. With the steering valve operative the pressure in the feed line 1 forces the valve piston 15, 16 into closure position so that the return flow is now exclusively conducted through the bypass line 19 with the fixed throttle 20 whereby a definite damming pressure is set in the system which pressure is not subject to fluctuations. <IMAGE>
Patent GB-2090617-A (GB)
Title: Processes and Compositions for Coating Metals
IPC: C23C22/08
Filed: 1981-12-31
Abstract: A protective coating is formed on an aluminium surface by contacting the surface with a chromium-free aqueous acidic solution containing tannin and an acrylic resin, and generally also phosphoric acid and/or hydrogen-fluoride.
Patent GB-2124561-A (GB)
Title: Bicycles: wheels; pedals; speedometers
Inventor: MOSS DAVID
IPC: B62M3/08
Filed: 1982-06-03
Abstract: (A) Wheels (Figure 3). The spoke- adjusting nipples are arranged so that two "flats" of each nipple are parallel with the wheel rim. According to the description, the bicycle is easier to push and will run straight with "no feeling of untidyness". (B) Pedals (Figure 4). The pedal bearings are plain bushes 2, 4 made of bronze, with the pedal tube 6 rotating on the outside of the bronze bushes 2, 4. Performance is stated to be at least as good as ball bearings. (C) Speedometers (Figure 5). The speedometer 5 is provided with a light bulb 3, for nighttime illumination, powered by a 1.5 V battery.     <IMAGE>
Patent GB-2101334-A (GB)
Title: NMR spectroscopy
Inventor: LEVITT MALCOLM HARRIS
IPC: G01R33/46
Filed: 1982-06-17
Abstract: In a method of heteronuclear decoupling in high resolution pulsed NMR spectroscopy, during acquisition of signals emanating from a nuclear species to be observed (e.g. carbon- 13), irradiation of an interfering nuclear species (e.g. protons) is effected by means of a train of composite pulses (R1, R2, R1, R2, etc.) each of which approximately inverts the longitudinal magnetisation thereof. The pulses are of two types (R1, R2, etc. and R1, R2, etc.) differing only by having opposite r.f. phases and the train constitutes a repeated sequence which consists of 2<N> pulses of each type (where N is a positive integer) and which has a form chosen in accordance with specific rules to ensure effective decoupling. A preferred form for the composite pulses consists of three constituent pulses of appropriate durations and with negligible intervals between them, the first and third pulses having the same r.f. phase which differs by 90 DEG from that of the second pulse. <IMAGE>
Patent GB-2123573-A (GB)
Title: Light valve
Inventor: SAXA ROBERT LEONARD
IPC: G02F1/17
Filed: 1982-06-17
Abstract: A light valve, comprises a cell containing a suspension of particles in a liquid suspending medium, said liquid suspending medium comprising an electrically resistive, inert, low molecular weight, liquid fluorocarbon polymer having a specific gravity at room temperature of at least about 1.5 and having at least about 50% of its atoms constituted by halogen atoms, at least 60% of said halogen atoms being fluorine and the balance chlorine and/or bromine, and an electrically resistive organic liquid miscible with the fluorocarbon liquid, said fluid suspending medium being operable to suspend said particles in substantial gravitational equilibrium. The particles are of a perhalide of an alkaloid acid salt or a light-polarizing metal halide or perhalide.
Patent GB-2100956-A (GB)
Title: Data processing arrangement
Inventor: TUCKER CHRISTOPHER JOHN
IPC: G06F17/16
Filed: 1982-07-01
Abstract: A data processing arrangement is designed to transform the co-ordinates of a two dimensional data array into a modified array by applying a 2 x 2 matrix to the original co-ordinate pattern. In this way transformations such as rotation, shear, magnification and reflection can be achieved. The arrangement is capable of handling large two dimensional arrays, each co-ordinate pair of which must be individually transformed. This is achieved by presenting the original co-ordinates X, Y to two dedicated multiplier devices as two data streams representing the two components X and Y of the co-ordinate pairs respectively. Each multiplier multiplies the co-ordinate presented to it by one of two selectable parameters and the outputs of the multipliers are summer together at an adder to produce new co-ordinates     X' = aX + bY and Y' = cX + dy where the parameters a and c are available to one multiplier and the parameters b and d are available to the other multiplier. The new co-ordinates X' and Y' appear at the output of the adder as a single interleaved data stream, and can be separated out as required. The arrangement is able to operate at very high speeds as fast dedicated multipliers are used, but at the same time it is very versatile as the nature of the transformation produced depends solely on the four parameters, which can be simply changed as necessary to produce a different transformation. A modification of the arrangements extends the invention to a 3 x 3 matrix. <IMAGE>
Patent GB-2101513-A (GB)
Title: Cleaning device
Inventor: RUOCCO JOHN EDWARD
IPC: B25G1/06
Filed: 1981-12-04
Abstract: A cleaning device (10) characterised in that it comprises a first rod member (12) arranged to be manually grasped by an operator, a second rod member (18) pivotally attached to the first rod member (12) said second rod member (18) having a free end, means adjacent the free end of the second rod member (18), arranged to receive a cleaning tool (38), wherein the first and second rod members (12, 18) are urged by resilient means (24) to an angular disposition of less than 180` relative to one another and the means for receiving a cleaning tool (38) is such that a mounted cleaning tool (38) faces into the angle included by the first and second rod members (12, 18).
Patent GB-2106548-A (GB)
Title: Weft patterning devices, shuttleless looms
Inventor: TZVETKOV KRUM KOSTOV
IPC: D03D47/38
Filed: 1982-09-03
Abstract: A cam 37 pivots a lever 38 so that a bridge 39 turns levers 5 anti- clockwise, a selected solenoid 2 then attracts its lever 3 so that return of the bridge 39 enables the lever 5 to turn clockwise and push downwards a neb 16 mounted in a fork ended slide 21, the cam 35 then pivots a lever 41 to move a second slide 33 which engages the neb 16 and moves the first slide 21 to the right so that its forked end 30, 31 contacts a segment (48), corresponding to the selected slide 21, and pivots it so that its movement is transmitted to a segment 58 to pivot it to the required picking position. A spring 20 returns the slide 21 to the left to enable further selection to be made. <IMAGE>
Patent GB-2128726-A (GB)
Title: Heat exchanger plate
Inventor: MARTIN RICHARD ELI JAMES
IPC: F28F3/08
Filed: 1982-10-21
Abstract: In a plate heat exchanger the conventional bridge gasket recess 10 can present substantially straight lines along its base and side walls and these can give rise to undesirable flexing under high pressure operation. In accordance with the present invention, the conventional corrugations 11 are extended to and through the bridge gasket recess 10 in zones 16 at a reduced, preferably half, height so that a continuous gasket can be included but which has an undulating configuration. It is also preferred to extend the corrugations 11 to and through the port gasket recess 7 in a similar manner. Similar configurations may be used in the gasket recess defining the lateral edges of the flow space. <IMAGE>
Patent GB-2110524-A (GB)
Title: Apparatus for dispensing a volatile material
Inventor: HILL RONALD POPPLETON
IPC: B01J20/28
Filed: 1982-12-01
Abstract: Apparatus for dispensing a volatile material comprises a core 13 containing the volatile material in liquid or solid form, an envelope 14 having apertures 15 containing said core and tear-away panel 16 covering the apertures in said envelope, the arrangement being such that removal of panel 16 enables the volatile material to be released into the atmosphere. The volatile material may comprise a perfume, deodorant, insecticide, pesticide or fungicide. The breached apparatus may be placed in the dust bag of a vacuum cleaner so that, in use, the volatile material is dispensed through the exhaust of the cleaner into the surrounding atmosphere. <IMAGE>
Patent GB-2137842-A (GB)
Title: Television signal processing apparatus
Inventor: COLLINS MARK CHRISTOPHER
IPC: H04N9/64
Filed: 1983-03-10
Abstract: A television signal processing apparatus comprises a source of system television synchronizing signals, an analog-to-digital converter for converting an input television signal to digital form, a digital-to-analog converter for converting the digital signal back to analog form, a plurality of digital television signal processors arranged in series between the analog-to-digital converter and the digital-to-analog converter, at least one of the signal processors being capable of frame synchronizing the digital television signal in dependence on a frame pulse supplied to the signal processor, and means associated with the digital-to-analog converter for producing a frame pulse and for feeding the frame pulse back to each of the signal processors, or at least to a signal processor capable of frame synchronizing the digital television signal and for synchronizing the produced frame pulse relative to the system television synchronizing signals.
Patent GB-2121081-A (GB)
Title: Heat insulation system for walls using insulating panels
Inventor: GUNTERT MANFRED
IPC: E04F13/04
Filed: 1983-04-07
Abstract: A heat insulation system for walls has insulating panels 10 made of a heat-insulating material which are secured on the outer side of the wall 22 and are cut-away around the edges of their outer faces, and junction elements 18 for use at the joints between panels. The cross- section of the junction elements 18 complements the cross-section of grooves (26, 28 Fig. 4) defined by the cut-away portions (12 Fig 1) of adjacent panels 10. The penetration of moisture into or through the joints or the formation of moisture in the region of the joints is prevented by the use of a water-repelling adhesive substance between the panels 10 and the junction elements 18. <IMAGE>
Patent GB-2128952-A (GB)
Title: Fifth wheel kingpin
Inventor: JAKOB LOTHAR
IPC: B62D53/08
Filed: 1983-09-28
Abstract: A kingpin 1 for use with a fifth wheel coupling comprises a kingpin head 3, a securing flange 8 secured to the kingpin head, and an annular shoulder 9 adjoining the kingpin head 3 and arranged to reinforce the securement of the securing flange 8 to the kingpin head 3. The annular shoulder 9 adjoins the kingpin head 3 via an annular arcuate portion 6, and the frusto conical surface of the annular shoulder 9 substantially forms a tangential outward extension from said arcuate portion 6. The surface of a receiving plate 12 is provided with recesses 13 of a sufficient depth as to receive wholly the end 11 of a respective fastener 14. This has the advantage that surface-machining of the receiving plate 12 is no longer required, as is the case with known constructions. <IMAGE>
Patent GB-2149089-A (GB)
Title: Gas cooking hob
Inventor: GRAY DAVID
IPC: F24C3/08
Filed: 1983-11-03
Abstract: A gas cooking hob (1) has a flat, top surface (3) of glass or ceramic having a plurality of apertures (5). A burner (6) is located in each of the apertures and a flange (7) of the burner extends laterally thereof to overlie the periphery of the aperture. A seal (10) can be provided between the flange and the top surface. The hob does not require a spillage tray and has a neat, generally pleasing appearance. <IMAGE>