baber/WOPTO huggingface dataset:
Patent GB-2185573-A (GB)
Title: Process and apparatus for analysing a gaseous mixture and a visible emission spectra generator therefor
Inventor: WADLOW DAVID
IPC: G01N21/68
Filed: 1987-01-19
Abstract: A visible emission spectra generator for a gaseous mixture includes a chamber 10 for receiving the gas to be analysed, electrodes 14 and 16 positioned externally about the chamber 10 and longitudinally disposed with respect to one another, an RF energy source 52 connected to the electrodes to establish a current therebetween for generating the visible emission spectra of the gaseous mixture to be analysed. The spectral emission is collimated by collimator 34 and a filter assembly 36 is employed to transmit wavelengths representative of the components of the gas mixture to photodetector device 30 disposed proximate the chamber to receive the thus generated light or visible emission spectra. A data processing assembly 40 for evaluating the spectral signals received by the photodetector device and suitable display and/or recording assemblies 42. <IMAGE>
Patent GB-2196363-A (GB)
Title: Brick wall coping system
Inventor: KNOX COLIN JAMES MICHAEL
IPC: E04D3/40
Filed: 1987-10-19
Abstract: A brick wall coping system which is suitable for a cavity wall comprises a first and second top layer of bricks 12 and 14 which define a cavity 15 between them, and a layer of capping units 16, which straddle the top layers of bricks. The second top layer 14 is usually a course of bricks higher than the first top layer 12, with an under surface 19 of the capping units 16 resting on and receiving the second top layer 14. An overhang 20 is provided on the capping units 16 which extends beyond the second top layer 14. Often the second top layer bricks 14 have special profiles which match the profile of the under surface of the capping unit 16. A damp proof course layer is provided in the mortar 17 and this is sandwiched between the capping unit 16 and the top course layers 12 and 14. <IMAGE>
Patent GB-2215481-A (GB)
Title: Optical fibres
Inventor: EVEREST F G
IPC: G02B6/10
Filed: 1988-03-09
Abstract: A fibre optic polariser made by inserting into a tubular member, an optical fibre preform having a part-circular across-section and a stack of part-circular glass plates which are metal coated on one side, and then pulling the assembly at elevated temperature to form it into a long fibre and finally cutting the fibre into sections, each section forming a fibre optic polariser.
Patent GB-2210249-A (GB)
Title: Variable design linger ring
Inventor: BYRNE JEFFREY ROY
IPC: A44C13/00
Filed: 1988-04-13
Abstract: The ring has an inner ring (1) which is encircled by an outer ring (2) and retainers (3). The retainers locate on the inner ring and hold the outer ring in position. A pattern, design or inscription adorning the outer ring and the retainers will be changed by rotating one or more of the encircling components around the inner ring. The retainers and the outer ring are easily removable from the inner ring to allow one, or more, to be replaced by another of different design or material. <IMAGE>
Patent GB-2207467-A (GB)
Title: Priming carburettor diaphragm fuel pumps
Inventor: DEVINE JOHN P
IPC: F02M17/04
Filed: 1988-07-18
Abstract: The bulb 30 manually produces pressure fluctuations in the fuel chamber 3 of the fuel pump when the pulse chamber 4 is not subject to engine produced pressure fluctuations such that the first and second pump valves 5A, 5B are opened and closed alternately and fuel is introduced into the fuel chamber 3 via the fuel inlet 8. A restricted outlet 33 to the fuel tank prevents build-up of pressure by the bulb 30 sufficient to open the valve 26 controlled by the diaphragm (17, Fig. 1) in the carburettor metering chamber (14). <IMAGE>
Patent GB-2221591-A (GB)
Title: Optical vehicle speedometer
Inventor: ROWE DUNCAN PETER
IPC: G01S17/58
Filed: 1988-08-06
Abstract: A vehicle speedometer comprises a laser 4 directing a beam onto the ground and detecting the Doppler frequency shift in the return, with reference, either Fig 2 to a second beam also directed onto the ground but in a direction to have an opposite sense Doppler shift or Fig 3 to part of the beam not directed and not Doppler shifted. <IMAGE>
Patent GB-2212826-A (GB)
Title: Card clothing
Inventor: CLAYTON MALCOLM
IPC: D01G15/92
Filed: 1988-11-03
Abstract: A card clothing element 10 for use in conjuction with a textile carding machine has a plurality of teeth 12 formed thereon for carding textile material. The element 10 is preferably extruded from a plastics material and has an integral locking mechanism 14, 16 which locks one side of the element to an adjacent element by member 14 of one element 10 snap fitting into cavity 16 of the other. The elements of the invention may be fitted securely on to the rotating drums of a carding machine by unskilled operatives without the need for specialised equipment. The element 10 can be made from a composite plastics material in order that hardness of teeth 12 is greater than that of the main body. <IMAGE>
Patent GB-2214975-A (GB)
Title: Door fastening
Inventor: WILLIAMS J H T
IPC: E05B65/10
Filed: 1988-11-28
Abstract: The fastening comprises a lever arm 5 which in a first position will hold closed a door to which it is applied and by rotation of the lever arm 5 to a second position will allow the door to be opened outwardly; the fastening includes means, to cause, in an emergency, the lever arm 5 to collapse relative to a main body portion when the lever arm 5 is in the said first position, under the action of an applied force producing a torque of predetermined magnitude. As shown, the lever arm 5 is rotatable about a horizontal axis (H, Figure 2) for movement between first and second positions and is rotatable about a vertical axis V to allow the collapse of lever arm S. In figure 1-5 balls or plungers 7a, 7b acted on by compression spring 8 are moved out of recesses (5a, 5b, Figure 5) to allow the collapse. In figures 6-9, the torque causes a nose 17b of a leaf spring 17 to ride over ridge 12c of a pivot block portion 12. <IMAGE>
Patent GB-2219375-A (GB)
Title: Vehicle wheel having means for protection against misuse
Inventor: HOLZBACH WOLFGANG
IPC: B60C23/08
Filed: 1989-06-02
Abstract: The invention relates to a vehicle wheel having a valve with a non-return mechanism, wherein the inflated tyre of the vehicle wheel can be driven for a considerable distance at a low speed when deflated following a puncture. 
<??>In order to prevent reinflation of such a vehicle tyre once it has been driven when deflated, a valve mechanism (8) is arranged in series with the non-return mechanism (5), the former mechanism (8) being mounted in the open position and changing to its closed position when the tyre has been driven in a deflated state. The mechanism (8) can only be reopened by means of a special tool and/or special replacement parts, it comprises a resilient sealing member (12) secured by a rod (10) to a mechanical sensor (9). When a tyre is driven in the deflated state, the sensor comes into contact with the tyre wall and the sealing member (12) is forced past a shoulder 14 and prevents reinflation. 
<IMAGE>
Patent GB-2223537-A (GB)
Title: Fuel injector cleaning/testing apparatus
Inventor: HARTOPP ROBERT
IPC: F02B77/04
Filed: 1989-10-06
Abstract: Injector cleaning/testing apparatus is arranged to enable electrically actuated injectors to be cleaned and tested whilst in situ on an engine. The apparatus is connected to the fuel supply system (12, 13, 15) of the engine which feeds fuel and/or cleaning fluid to the engine injectors (11). Measuring means (5) is also provided for measuring the rate of flow of fuel through the injectors (11). Fuel is pumped to pressurise the supply of fuel to the injectors; the pressure is measured and the rate of change of the pressure is determined as an injector is opened thereby determining the rate of flow through the injector. The apparatus also includes an arrangement whereby the engine fuel supply pump (13) is used during cleaning and an arrangement (42-48) by which the injectors (11) may be actuated in different modes without disconnection.
Patent GB-2239752-A (GB)
Title: Radio frequency mixer circuit
Inventor: SAUL PETER HENRY
IPC: H03D7/12
Filed: 1990-01-05
Abstract: A mixer circuit for mixing two radio frequency signals wherein a first signal is fed to an amplifier for amplification, and a second signal is used simultaneously to control the gain or transconductance of the amplifier. The amplifier may be a transistor Q1 in common emitter configuration. Control may be effected by a second transistor Q2. The signals to be mixed may be a received radio signal and that of a local oscillator. <IMAGE>
Patent GB-2244874-A (GB)
Title: Diac grounding phase control
Inventor: MUKERJEE ROBIN
IPC: H02M5/257
Filed: 1990-04-10
Abstract: A diac grounding phase control circuit is implemented by using two transistors, one NPN and one PNP transistor, for each positive and negative phase to pull down the input to the diac. An RC network fires the diac and hence a triac. The switching of the transistors is carried out by an opto coupler. <IMAGE>
Patent GB-2246065-A (GB)
Title: Lightweight display board system
Inventor: DAVIS ALEC
IPC: A47B96/20
Filed: 1990-05-23
Abstract: A display board system (Fig. 1) having the panels permanently joined by the facing fabric (b) and the fabric channels (a & c) into which supporting poles are inserted to stiffen the joints and enable the boards to be erected. If the said poles are hollow hen suitable services may be supplied and generally hidden from either side of the said display board system. When packed by storage display material may be left on the panels for protection. <IMAGE>
Patent GB-2240714-A (GB)
Title: Shortenable umbrella
Inventor: SEIDEL JOACHIM
IPC: A45B25/16
Filed: 1990-09-11
Abstract: A shortenable umbrella has a frame with three part canopy-supporting rods (D1, D2, D3) which are respectively associated with two interacting parallelogram linkages (P1, P2). A corner of one linkage (P1) is provided by a pin and slot (9, 9a) of which the pin passes through a diagonal (Di) of the linkage to a stable over centre position, maintained by radial tension in a canopy cover (18), when the umbrella is opened. The over centre effect is automatically released by spreading of struts (3) at the beginning of closing of the umbrella. <IMAGE>
Patent GB-909047-A (GB)
IPC: G11B5/53
Abstract: 909,047. Magnetic recording apparatus. BUSH & RANK CINTEL Ltd. Dec. 12, 1961 [Dec. 12, 1960; Nov. 10, 1961], Nos 42644/60 and 40318/61. Class 40 (2). A revoluble member carrying a number of mounting members each carrying a magnetic head thereon is provided with means for adjusting the peripheral position of each mounting member whereby the angular position of each head relative to the other heads may be adjusted. Several embodiments are described. Fig. 1 shows a head 5 mounted on a member 4 adjustable about a pivot 3 by conical screws 7, 8 and then locked in position by a clamping screw 9. A modification, Fig. 2, shows a slotted mounting member 4 also having the adjusting screws 7, 8, but also provided with further conical screws 12, 13 which effect a radial adjustment. A symmetrical arrangement of this method is shown in Fig. 3. Figs. 4, 5 and 7 (Fig. 7, not shown) illustrate embodiments in which circular mounting members are mounted in circular recesses and are subjected to limited movement about a pivot therein. The method of Figs. 5 and 7 include deformable spring links which effect a fine adjustment of the position of the mounting members.
Patent GB-2243045-A (GB)
Title: Median filter for video signals
Inventor: WISCHERMANN GERHARD
IPC: H04N5/21
Filed: 1991-01-18
Abstract: In a median filter for video signals 5 the values of a first (central) picture element  epsilon  and the values of a plurality of further picture elements a to d, f to i are supplied from delays 6-13 to the inputs of a median selector 3. The further picture elements are alongside the first picture element e in the line direction (c, d, f, g) and at right angles to the line direction (a, b, h, i). In an embodiment further values are supplied to the median selector from picture elements having the same X-Y co-ordinates as the first picture element e in at least one preceding and one following picture. The filter may be used for noise reduction, drop-out compensation, and the suppression of colour and luminance cross-talk in NTSC/PAL. It combines the advantages of a line comb filter, a frame comb filter and a low pass filter, and can be used for luminance-colour separation. The points fed to selector 3 may be derived by interpolation. <IMAGE>
Patent GB-2253808-A (GB)
Title: Hand held electric floorboard cutter
Inventor: SEAL ANDREW
IPC: B27B9/00
Filed: 1991-03-19
Abstract: A portable hand held electric floorboard cutter for cutting through a floorboard at the point where the board is nailed to a joist comprises a plastic housing 2, 3 which encloses a circular cutting blade having a diameter not exceeding 5cm and an electric motor energised by a trigger 8 to drive the blade. When a lever 1 is depressed the blade projects from the housing to cut into the floorboard to a maximum depth of 2cm. <IMAGE>
Patent GB-2254864-A (GB)
Title: Collapsible structural framework
Inventor: TIERNEY PAUL
IPC: E04B1/19
Filed: 1991-04-16
Abstract: Collapsible framework for use in portable or other structures comprises non-folding ribs (10) and folding ribs (12) having releasable hinge joints (14) at their centres. The ends of the ribs are interconnected by pivotal or hinge joints at the apices (A-F) of tetrahedral cells constituted by the erected ribs, each cell including two folding ribs (12) between different pairs of its four apices enabling the structure to be collapsed so that sets of apices can be folded together bringing the ribs into a compact bundle without disconnection of any of the rib joints. The framework may be that of a tent, or may constitute a collapsible beam or the like. <IMAGE>
Patent GB-2257553-A (GB)
Title: Operation control of coin storage and dispensing assemblies
Inventor: KARGATHRA DINESH
IPC: H04Q9/00
Filed: 1991-07-08
Abstract: A coin mechanism has a plurality of coin storage and dispensing assemblies (2, 4; 2' 4'), each said assembly being provided with a plurality of detectors (6, 8; 10; 12,14) each for detecting a respective parameter of that assembly, and is characterised by a plurality of output lines (01, 02) one for each assembly, each output lines being coupled to all said detectors of its assembly, a plurality of activation lines (A1, A2, A3), each being coupled to a group of said detectors comprising a detector for each said assembly, and means for driving the activation lines one at a time to activate the detector groups one at a time, whereby to produce sequentially on the single output line of each assembly signals indicative of all the parameters for that assembly as its detectors are sequentially activated by the driving of the activation lines. The detectors in a group may all detect the same parameter, eg level of stored coins above or below predetermined levels, position of coin dispensing device, or whether a coin is being delivered from a dispensing device. The detectors of each assembly may include both electro-optical and electro mechanical detectors. <IMAGE>
Patent GB-2247457-A (GB)
Title: (Keto) diacid amides
Inventor: WANG PEN-CHUNG
IPC: C10L1/16
Filed: 1991-07-11
Abstract: (Keto) diacid amides of poly(olefin)-N-substituted amines are used alone or in combination with certain carriers, such as poly(olefin) polymers or hydrogenated forms of the polymers as fuel additives to prevent or reduce engine deposits and have formula   <IMAGE>   in which R is a poly(olefin) chain having an average molecular weight of from about 500 to about 9,900; each R<1> is independently a hydrocarbyl or substituted hydrocarbonyl group containing up to 15 carbon atoms; m is 0 or 1; Y is an N-substituted amino group in which the substituent is a hydrocarbyl or substituted hydrocarbyl group containing up to 20 carbon atoms; and A may be hydroxy, halogen or hydrocarbyloxy of up to 10 carbon atoms.
Patent GB-2258907-A (GB)
Title: An oil feed device
Inventor: LAYZELL GILBERT
IPC: F01M11/06
Filed: 1991-08-09
Abstract: An oil feed device for an oil sump (12) comprises a reservoir (21) for storing of oil, having an outlet port (23) connected to a conduit (25, 27) which is connectable to the sump (12). The conduit (25, 27) has a float therein which follows the oil level in the sump and operates a valve (31) in the outlet port (23) to open the valve (31) and allow oil to flow from the reservoir into the conduit when the oil level is low, and closes the valve when the oil level is above a predetermined level. <IMAGE>
Patent GB-2259945-A (GB)
Title: Pivotable window assembly
Inventor: WILLIAMS KENNETH
IPC: E05F1/12
Filed: 1991-09-10
Abstract: A window installation for a railway carriage comprises a mounting frame 14 to which are mounted a lower fixed window assembly 10 and an upper hopper window assembly 12. The hopper window assembly 12 comprises a self-contained assembly pivotally mounted relative to a sub-frame which is itself secured to the mounting frame 14. The hopper window is biased with an overcentre action between open and closed positions, and vice versa, by one or more leaf springs 80 located within a lower horizontal pivot housing for the window. The housing includes a removable cover plate 72 for ready access to the pivot mounting and the springs 80. Seal 86 may be provided, and drain holes 52 allow condensation to exit from sloping floor 80. <IMAGE>
Patent GB-2260200-A (GB)
Title: Light beam folding device using parallel mirrors
Inventor: CHEN PHILIP
IPC: G02B7/182
Filed: 1991-10-04
Abstract: A light beam folding device has at least two reflecting mirrors 3, 4 parallel to one another on the same mirror mount 12. The mirrors 3, 4 can move in synchrony by means of a special mirror mount adjustor 35 so that the reflection angle for each light beam can be adjusted simultaneously, thereby increasing the efficiency and precision of the assembly. The mirror mount 12 is secured to a structural frame 11 by parts 15, 16, 36, the angle of the mirror mount 12 being adjustable by threaded fastener 35 and lever 16. <IMAGE>
Patent GB-2253300-A (GB)
Title: Gaming and amusement machines
Inventor: JOHNSTON PAUL ROBINSON
IPC: G07F17/34
Filed: 1992-02-24
Abstract: A gaming or amusement machine has a display means comprising one or more reels (7) which are movable relative to a display location to bring a region (16') of each reel (7) into register with the display location. Bodies with multiple facets (16) having a plurality of symbols are carried by each reel (7) into register with the display location. The bodies (16) are movable relative to the reels (7) so that each body can present a selected one of its symbols into view at the display location. It is thus possible to increase the number of symbols which a reel of a gaming machine can display while maintaining the clarity of its display. <IMAGE>
Patent GB-2265064-A (GB)
Title: Distortion compensation in projection systems
Inventor: RICHMOND BENJAMIN FRANKLIN
IPC: H04N5/74
Filed: 1992-02-26
Abstract: An image is projected onto a screen by a projector which includes a spatial light modulator (24). This comprises an array of individual elements (28) which are modulated in response to a pixellated signal from an image source (36) and thereby apply light to a projection lens (30). Because projections are seldom positioned in relation to projection screens so as to project a plane undistorted image a rectangular image will usually appear to be keystone shaped when projected. In order to remove the distortion from the projected image a special effects processor (38) modifies the image before it is applied to the spatial light modulator (24). <IMAGE>
Patent GB-2255278-A (GB)
Title: Fire damper
Inventor: JACKSON ROY JAMES
IPC: A62C2/12
Filed: 1992-03-05
Abstract: A fire damper comprises a housing (2), a blade (7) which is movable between an open position which allows passage of air through the damper and a closed position in which passage of air, fire and combustion products through the damper is substantially prevented, biasing means (8) for biasing the blade (7) toward the closed position, and means (16, 19, 20) for actuating closure of the blade (7) at a predetermined temperature to therefore allow the blade (7) to be biased by the biasing means (8) to the closed position when the predetermined temperature is reached, and at least one abutment surface (12) provided on the blade (7) against which the biasing means (8) abuts when the blade (7) is in the closed position, whereby the blade (7) is continually biased downwards by the action of the biasing means (8) on the abutment surface (12). <IMAGE>
Patent GB-2265087-A (GB)
Title: Knee brace
Inventor: HUTCHINS STEPHEN
IPC: A61F5/01
Filed: 1992-03-07
Abstract: The brace comprises upper and lower leg engaging parts 12, 13 connectable around the leg above and below the knee joint and having strengthening or mounting means interconnecting by joint means 16 comprising two oppositely arranged abutment pants with the abutment surface (5) thereof each including a curved portion such that the curved portions are movable on each other in rolling engagement and are in constant abutment, the parts being held in abutment by link means 2 pivotally connected to each abutment part. The said joint means are held in stable abutment by virtue of the outermost portions of each abutment surface or the abutment surfaces of each abutment part-being sufficiently laterally spaced apart as to prevent undesired relative tilting of the two parts. Slip prevention means formed of intermeshing gear-wheel like portions are provided on the joint means, distinct from said curved portions. <IMAGE>
Patent GB-2267431-A (GB)
Title: Rain water collecting device for an umbrella
Inventor: LIN CHING-PING
IPC: A45B25/28
Filed: 1992-06-05
Abstract: A rain water collecting device for an umbrella comprises a reservoir (6) open at one end, and having a diaphragm (10) separating the reservoir into first and second compartments. A receiving tube is mounted in the center of the diaphragm, and extends into the first compartment where it may removably receive the tip of the umbrella. A first coil-tube (8) in the first compartment has an inlet (3) at the diaphragm and an outlet (4) in the first compartment; and a second coil- tube (9) in the second compartment has an inlet (1) at the diaphragm and an outlet (2) in the second compartment. After use, rain water first flows into the first compartment through the first coil-tube, and then is drained off by inverting the umbrella together with the reservoir, to allow the rain water in the first compartment to drain outside through the second coil-tube. <IMAGE>
Patent GB-2259246-A (GB)
Title: Positioning structure for a frame and brackets of a modular-type wiper device
Inventor: HAYASHI AKIRA
IPC: B60S1/28
Filed: 1992-09-02
Abstract: In a positioning structure for a frame (7) and brackets (2) in a modular-type wiper device, positioning protrusions (10b) provided on an assembly jig (10) are passed through respective first positioning holes (7b) provided in the frame and fitted into respective positioning recess (2b) provided in each of the device brackets (2) so as to set the frame and the brackets in position with respect to the assembly jig, and positioning protrusions (2c) provided on each of the brackets (2) are passed through respective second positioning holes (7c) provided in the frame so as to effect a relative positioning between the frame and each bracket. <IMAGE>
Patent GB-2272605-A (GB)
Title: RF Circuit for receiver/transmitter
Inventor: BATH GARETH JOHN RICHARD
IPC: H04B1/52
Filed: 1992-11-11
Abstract: An RF circuit for a TDMA mobile telephone system allows bulky and expensive IF filters (6, 11) to be saved by sharing common filters between transmit and receive channels and automatically switching into the channel being used. The filters described are bidirectional SAW filters. <IMAGE>