baber/WOPTO huggingface dataset:
Patent GB-2143393-A (GB)
Title: Very low current pierce oscillator
Inventor: LEWYN LANNY L
IPC: H03L3/00
Filed: 1984-08-15
Abstract: A very low current Pierce oscillator has two pairs of complementary field-effect transistors (FET's) and a two-terminal quartz crystal. The gates of the first complementary FET pair are coupled through individual capacitors to one terminal of the quartz crystal, their drains being connected together and to the other quartz crystal terminal. Current flow through the crystal oscillator is minimized by a novel oscillator bias loop connected between the gates of the first FET pair. Amplification is provided by the second FET pair which have a commonly connected drain comprising the oscillator output node. The gates of the second FET pair are each connected to a respective one of the gates of the first FET pair. The oscillator bias loop minimizes the source-to-drain current through the first FET pair by reducing the P-channel FET gate voltage in response to the source-to-drain current. The oscillator bias loop assures reliable start-up by permitting the oscillation of the source-to-drain current to increase freely to some large magnitude and then operates to reduce the amplitude of the oscillation and also the dc bias level of the current to an equilibrium condition. Means are provided for preventing elements within the oscillator bias loop from overloading the oscillator or otherwise preventing the initiation of oscillation at start-up.
Patent GB-2151369-A (GB)
Title: Optical fibres
Inventor: RUSH DR JAMES DOUGLAS
IPC: C03C25/106
Filed: 1984-10-24
Abstract: An optical fibre comprising a core and a cladding, which substantially prevents the passage of hydrogen through the cladding to the core. Such fibres can be produced by coating with silicon nitride, silicon, gold, silver, copper or SnO2, TiO2- doped glass.
Patent GB-2172438-A (GB)
Title: Printed circuits
Inventor: PILCHER HEATHER
IPC: H05K1/09
Filed: 1985-03-16
Abstract: A circuit arrangement is formed by producing a pattern of a conductive polymer ink (3) upon a moulded plastics substrate (1). When cured the ink is treated with a palladium compound to promote the electroless deposition of copper or nickel on to the ink. Solder can then be applied to the circuit without damaging the ink. <IMAGE>
Patent GB-2174194-A (GB)
Title: Monitoring a space
Inventor: WALTON NIGEL HOWARD
IPC: G08B13/184
Filed: 1985-03-27
Abstract: A monitoring device and method, for example for use in a security system, comprises at least two beam paths 6, 6a for a beam from a laser emitter, the outward beam paths being connected to returning laser beam paths 7 and 7a by way of reflectors 4, 5, 7, 8, 9 and 10. The laser beam is deflected so that the beam paths are traversed at closely spaced times. Movement of a reflector 3, for example mounted on a door 2, interrupts the beam path 6, 7 of which it forms part. That movement of the door may be verified by a further beam path 6a, 7a which is interrupted as the door moves. The same laser source can be used for scanning several different movable components such as doors, windows, roof lights, etc. and may be arranged to direct laser beams in a position to be interrupted by the presence of an intruder.   <IMAGE>
Patent GB-2177788-A (GB)
Title: Electric lighting devices having flexible supports
Inventor: ATKINS MICHAEL ALAN ROY
IPC: F21V21/06
Filed: 1985-07-20
Abstract: An electric lighting device consists of a copper sheath cable containing conductor wires and supporting a lamp fitting at one end, the tube being capable of being bent into various shapes. <IMAGE>
Patent GB-2186927-A (GB)
Title: Vee shaped braking system
Inventor: MUDHER RAJINDER SINGH
IPC: F16D49/16
Filed: 1985-08-12
Abstract: A vee shaped braking system has a vee shaped brake pulley with two brake shoes with pads around the perimeter. It is used to stop rotating objects. The actuating force is through the pneumatic or hydraulic cylinders. Once the rotating object has stopped, upon relaxation of the cylinder actuating pressure, the release spring opens up the brake shoes. An adjustment bolt caters for wear in the braking pads. <IMAGE>
Patent GB-2185449-A (GB)
Title: Drain for opening roof assemblies for motor vehicles
Inventor: DUFFT JURGEN
IPC: B60J7/02
Filed: 1986-01-17
Abstract: An opening roof assembly comprises a water channel (2) having one or more outlet apertures (3) connected to a respective drain pipe (4), wherein the or each said aperture contains a respective elastomeric grommet (5) which passes through the aperture and has external abutment formation forming a groove (6) overlying internal and external portions of the water channel and the respective drain pipe is tightly received in the respective grommet. <IMAGE>
Patent GB-2175886-A (GB)
Title: Sealing head for applying closures to receptacles
Inventor: GARCIA PEREZ JULIO
IPC: B67B3/18
Filed: 1986-04-11
Abstract: The sealing head is rotated and moved downwards towards a closure with a skirt 7 fitted over a neck of a receptacle. A central part 6 and a peripheral part 3 come into contact with the closure and an edge 8 of the receptacle, respectively, and are therefore stopped while the body 1 of the head continues to rotate and descend. A mounting member 9 which is axially fixed, but rotatable, relative to the parts 6 and 3 carries levers, the upper ends 4 of which are rounded and turned by an actuating member 2 rigid with the body 1, thereby bringing pressing elements in the form of rollers 5 into engagement with the skirt 7 in order to seal the closure. <IMAGE>
Patent GB-2174750-A (GB)
Title: Multiple bolt securing mechanism
Inventor: ANNAN JOHN
IPC: E05C9/00
Filed: 1986-05-02
Abstract: A fire door assembly 10 comprises a securing mechanism 14 operated by a hand lever 26 operating a bolt bar 28 carrying three laterally projecting bolts 32, 34, 36 and which is laterally slidable by means of guides 37, 39. A pin and slot connection 54, 56 between lever 26 and the bolt bar 28 provides for simple actuation of the assembly, which is applicable to fire doors, security doors and other relatively lightweight door assemblies. <IMAGE>
Patent GB-2181157-A (GB)
Title: Fine gold wire for semiconductor bonding
Inventor: FUKUI YASUO
IPC: C22C5/02
Filed: 1986-06-04
Abstract: This invention relates to a wire bonding gold line used for connecting a semiconductor tip electrode with an outside lead portion. This gold wire characteristically contains gold (Au) having a purity level 99.996-99.9995 wt % and 0.0032-0.008 wt % by total weight of said gold wire of germanium (Ge) so that the electric resistance of the wire bonding gold line is reduced, while the mechanical strength such as tensile strength and high temperature strength is excellent and a gold ball can be shaped into the form of a nearly perfect sphere in the connection of the tip electrode.
Patent GB-2191443-A (GB)
Title: Fibre reinforced plastics
Inventor: OTTY MALCOLM
IPC: B32B5/28
Filed: 1986-06-09
Abstract: A fibre reinforced plastic structural member is made by making a resin impregnated fibre reinforcing assembly comprising two superimposed laminar sections which are connected together so as to be separable in some regions, separating the sections in said regions and re-forming the impregnated assembly while setting or curing the resin thereof into a structural member. Structural members such as I- beams and T-sections can be made in this way.
Patent GB-2177611-A (GB)
Title: A doll
Inventor: BORTOLOTTO MARIA TERESA
IPC: A63H3/36
Filed: 1986-07-15
Abstract: A doll 1 which can either appear to be pregnant, with a child 5 therein, or appear not to be pregnant after removal of the child 5. The doll 1 has an abdomen portion which is formed by an ovoid cap 2 pivotally connected to the doll's body so that it can protrude or be rotated by about 180 DEG  so that its hollow side faces outwards. The hollow side can be covered by a flat covering plate 8 (Figure 5) to give an appropriate shape to the doll's body. The child is of a soft vinilic material whereby it can be extended from a fetal attitude and its half open mouth applied to the doll's breast. <IMAGE>
Patent GB-2178790-A (GB)
Title: Cord clamp
Inventor: FILDAN GERHARD
IPC: F16G11/10
Filed: 1986-07-16
Abstract: A cord clamp has a sleeve (20) and a plunger (10) displaceable in the sleeve against the force of a spring (14) formed integrally on the plunger. The sleeve (20) has a pair of windows (24) which can be aligned with an opening (13a) in a shank (13) of the plunger (10) when the plunger is pressed in to allow the movement of the cord through the clamp. Inner corners of the bars (15) forming the spring and arranged in a zigzag pattern are provided with circular section concavities to reduce material fatigue, while opposite sides of the windows (24) and opening (13a) are toothed for effective engagement with the cord. Opposite ends of the sleeve and the plunger are convexly ribbed to allow convenient gripping and use of the clamp. <IMAGE>
Patent GB-2180675-A (GB)
Title: A fixed odds betting system
Inventor: BELL MICHAEL JOHN
IPC: G06Q50/00
Filed: 1986-07-23
Abstract: A betting system has a number of betting terminals and displays connected to a central control unit. The betting system allows both fixed price and expected dividend betting by continually calculating the odds and liabilities in respect of each contestant and ensuring that the total liability incurred does not exceed the total amount of money wagered. Expected dividend betting is only allowed until a threshold level of wagers received is reached either by wagers received at the terminals or by transfers of funds from another body. Once the threshold is reached both fixed price and expected dividend betting is allowed by the system. <IMAGE>
Patent GB-2180172-A (GB)
Title: Electro-precipitation apparatus
Inventor: BAYLIS ALAN PETER
IPC: B03C3/45
Filed: 1986-09-05
Abstract: An electro-precipitator collector electrode assembly comprises a collector electrode 12 resiliently suspended by springs 142 on a support beam 140 which extends along an upper edge portion of the collector electrode 12; rapping blows are transmitted directly to the collector electrode 12 via anvils 144 coaxial with the springs 142. The rapping blows are applied to the anvils 144 by drop rod hammers 60. <IMAGE>
Patent GB-2190642-A (GB)
Title: Film wrapping machine
Inventor: FUJIO MASAAKI
IPC: B65C3/16
Filed: 1986-11-18
Abstract: A film wrapping machine for wrapping a film, e.g. heat-shrinkable film, around a container X comprising a rotary turntable assembly 10 having a plurality of peripheral container-receiving supports 31, 32 for transporting containers from one station to another, a film supply unit 212 for supplying film to a respective support, and a plurality of reciprocable and rotatable film retaining suction members 50, one for each respective support and being carried by the turntable assembly. During the rotation of the turntable assembly, the film retaining suction members are successively lifted to a raised operative position where they suction grip the leading end of the film and are then rotated around the respective support 31 to wind the film to tubular form about the containers. Each film retaining member has two spaced suction slots or rows of apertures, the leading slot or row being operative to grip the leading film end and the trailing slot or row being operative on rotation of the member to grip the trailing region of the wound film. The lapped ends of the wound film are then heat fused by a reciprocable head 170. Alternatively, the head may press adhesively united ends. In one modification, (Figures 6(a), 6(b)), elongate film support elements 61-64 are lifted with the member 50 and then spaced around the container on rotation of the member to provide container-embracing film-support legs about which the film is wound. In another modification (Figures 7-8), the spatula-shaped members 50 are replaced by tubular shaped members adapted to surround the respective containers. <IMAGE>
Patent GB-2201701-A (GB)
Title: Solar heated cavity wall
Inventor: WORMALD ROY
IPC: E04B1/74
Filed: 1987-03-06
Abstract: A new or an old, conventional cavity wall has a selective coating 2 applied to its external surface to produce high solar absorptivity but low longwave emmisivity. To this combination a suitable air gap, frame and glazing 1 is provided to protect the outer leaf. Heat produced by the absorption of solar radiation on the selectively coated surface passes by conduction through the outer leaf into the cavity. Air flowing from an inside room to the bottom of the cavity 7 is heated and exits at the top 9. A small fan 8 may be inserted into the air stream to improve the solar wall's performance. <IMAGE>
Patent GB-2204720-A (GB)
Title: Switch mode power controller
Inventor: MARTIN-LOPEZ FERNANDO RAMON
IPC: H03K3/282
Filed: 1987-04-09
Abstract: A switch mode electrical power controller for providing a width modulated output pulse signal in response to a control input signal representing a parameter controlled by the power controller, in which a network for generating the width modulated waveform is capable of combining a ramp waveform signal, a control signal and at least one other signal in generating the width modulated waveform, and a circuit arrangement effects regenerative switching of the network during changes between a first and a second level of the pulse width modulated waveform. <IMAGE>
Patent GB-2203789-A (GB)
Title: Touch-control anti-burglar circuit
Inventor: CHERN JIIN
IPC: G08B13/00
Filed: 1987-04-25
Abstract: A touch-controlled confidential number anti-burglar circuit comprises a touch entry plate 11 feeding signals to an entry unit 1, a counter unit 3, a lock unit 5, an error-detecting unit 6 and an alarm unit 7, wherein the counter unit 1 counts the number of touches on the plate 11 by the user and transmits a corresponding signal to the lock unit 5 or the error-detecting unit 6 to trigger the opening of a door or the sounding of an alarm. A reset unit 4 resets the counter unit 2 and clears the lock unit 5 and error-detecting unit 6 after use to ready them for next use. <IMAGE>
Patent GB-2195575-A (GB)
Title: Method of moulding articles of microporous thermal insulation material
Inventor: HUGHES JOHN THOMAS
IPC: B28B23/00
Filed: 1987-08-25
Abstract: The method comprises providing a mould which is dimensioned so as to be smaller by a predetermined amount than the corresponding dimensions of the desired shaped article and charging a predetermined amount of an intimate mixture of a microporous thermal insulation material into the mould. The intimate mixture is compacted within the mould by means of a die (16) which is urged towards the base (12) of the mould within an area defined by side walls (13) of the mould. Subsequently at least a pair of the side walls of the mould are removed while the compacted intimate mixture remains under compression due to the urging of the die towards the base of the mould and then the die is released so as to allow the compacted intimate mixture to expand freely. In an alternative embodiment, the side walls are removed by dismantling the walls. <IMAGE>
Patent GB-2215750-A (GB)
Title: Enamelled non-metallic ceiling tiles and wall panels
Inventor: DAVEY CLIVE ROBERT
IPC: C04B41/50
Filed: 1988-03-17
Abstract: The invention relates to an enamelled non-metallic ceiling tile and/or wall panel formed from fibrous material. Such product is preferably prepared by applying a liquid priming paint to the non-metallic fibrous material, such priming paint incorporating an electrostatic material or agent therein, thereafter applying a powder or wet paint coating to the product by electrostatic techniques, and then heating the product to produce a stone enamel type finish thereof.
Patent GB-2228339-A (GB)
Title: Waveguide corner
Inventor: HEWSON-BROWN RODNEY C
IPC: G02B6/122
Filed: 1988-09-09
Abstract: A waveguide corner is proposed which transmits an electromagnetic or an optical signal within either a dielectric slab waveguide, or any waveguides such as stripe, slab-coupled, rib 2, 4 buried, embossed or channel waveguides, or micro-strip transmission lines, any of which may contain metal parts and to which the effective index principle may be applied. The waveguide is reflected by a dielectric or metal mirror 8, and the signal transmitted round the corner would usually be partially reflected, and might be lost also through radiation. A waveguide corner having a 60 DEG  corner as shown uses a Star-of-David structure based on equilateral triangles; the width of the guide can be as narrow as convenient. A waveguide corner having a 90 DEG  corner is based on a simple right angled prismatic structure but the width of the waveguide has then to be chosen carefully. For slab waveguides specific regions have differing refractive indices or dielectric constants. For rib waveguides specific regions have given heights, thereby achieving the correct effective indices whilst having a uniform refractive index. <IMAGE>
Patent GB-2213221-A (GB)
Title: Method of adapting slip threshold values for a propulsion slip and/or braking slip control system to the tyres of a motor vehicle
Inventor: MULLER ARMIN
IPC: F02D41/04
Filed: 1988-12-05
Abstract: Method of, and apparatus for, adapting slip threshold values for a propulsion slip and/or braking slip control system to the existing tyres of a motor vehicle, the instantaneously effective coefficient of friction between vehicle and road being determined from the measured values of the vehicle speed and of the vehicle longitudinal acceleration inserted in a graph and the predetermined value or the predetermined function for the slip thresholds being substituted or corrected by the slip values measured at the driven wheels in the case of an operations state defined by a measurement window 21 (see Fig 3). …<IMAGE>…
Patent GB-2212084-A (GB)
Title: A continuous casting mould cooling arrangement
Inventor: HARGASSNER REINHARD
IPC: B22D11/04
Filed: 1988-12-21
Abstract: In a continuous casting mould, the mould side walls are each formed by a supporting wall and an internal copper plate fastened thereto for contact with the metal melt. On the face of the internal plate (6) facing the supporting wall, parallel coolant channels are provided, which comprise slits (13) open towards the supporting wall. For each slit (13), the width (19) is smaller, and depth (18) is larger, than the width (20) of the ribs (21) located between the slits. The rib width (20) is 13mm (max) and the flow speed of the coolant is adjusted such that the heat transmission coefficient between the internal plate and the coolant is between 20 and 70 kW/m<2>K, preferably between 25 and 50 kW/m<2>K, such that the heat flow density for the internal plate is larger than the heat flow density for a smooth internal plate having no ribs. 
<IMAGE>
Patent GB-2238161-A (GB)
Title: Attractive atomic force microscope
Inventor: ROSSER ROY JONATHAN
IPC: H01J37/26
Filed: 1989-08-18
Abstract: In an Atomic Force Microscope in which a cantilevered member 12, Fig. 2b, is used to investigate the profile of a sample surface by interacting with the interatomic forces of the sample surface, the motion of the atomic tip of member 12 is monitored by a scanning tunneling microforce tip 10 which is mounted between the cantilevered member 12 and the sample. By this arrangement it is possible to resolve the attractive portion of the inter-atomic force between the specimen and the atomic tip. Fig. 7 shows an embodiment in which both the atomic tip 12 and the tunneling tip 10 are of triangular configuration. <IMAGE>
Patent GB-2222078-A (GB)
Title: Hair curlers
Inventor: HALL DAVID CHARLES
IPC: A45D2/24
Filed: 1989-08-23
Abstract: A winding member (1) of a hair curler of the type having a winding member (6) and a clasp member (7) comprises a stiff central core (17) of hard material and a sleeve (16) surrounding the core of softer material. The diameter of the sleeve (16) is not significantly compressed during winding of a tress of hair since the core (17) supports it. The winding member (1) comprises only two components: the sleeve (16) and another component defining the core and the remainder of the winding member. The sleeve is preferably integrally moulded onto the core and is made of PVC to assist gripping of hair to be wound by the winding member. The core (17) may have a non-round cross-section. <IMAGE>
Patent GB-2237254-A (GB)
Title: Secondary lifting surfaces using separated flow
Inventor: BARNARD RICHARD HARRY
IPC: B64C23/06
Filed: 1989-10-25
Abstract: A secondary lifting surface 1, 2 which is capable of generating lift by means of conical or separated vortices at high angles of attack is movable so that its incidence may be changed relative to that of the primary lifting surface 3. When raised to an angle of attack sufficient to generate separated vortices, the surface generates a high lift coefficient, and is not prone to stalling in the conventional sense. Additionally, if raised to a sufficient angle of attack, its rate of increase of lift coefficient with change of angle of attack reduces, reducing the sensitivity to disturbance by gusts. The surfaces 1, 2 may be at the ring tips, or may be retractable into the main lift surfaces (Figs 2, 3). <IMAGE>
Patent GB-2245220-A (GB)
Title: Multi-layered transfer sheet
Inventor: KAY CHRISTOPHER
IPC: B44C1/17
Filed: 1990-06-22
Abstract: A multi-layered transfer sheet for imparting a design onto a fabric such as clothing, bags and the like. The transfer sheet (1) comprises a base peel-off sheet (2) having rayon fibres (5) releasably flocked on the base peel-off sheet (2) by a glue (6). An adhesive layer (7) forming a design is fixed to outer ends of some of the fibres (5). The adhesive layer (7) comprises a mixture of a water based acrylic polymer emulsion, sodium sesquicarbonate, hydroxyethyl cellulose and ammonia. A top layer of granules (15) is fixed on the adhesive layer (7). <IMAGE>
Patent GB-2240498-A (GB)
Title: Molten steel pouring nozzle
Inventor: OZEKI HIDEKICHI
IPC: C04B35/48
Filed: 1991-01-03
Abstract: A molten steel pouring nozzle having a bore through which molten steel flows, of which an inner portion forms the bore is formed of a refractory consisting essentially of:   i) from 40 to 89 wt.% of a zirconia clinker comprising calcium zirconate there being within the zirconia clinker from 8 to 35 weight parts relative to 100 weight parts of the zirconia clinker of calcium oxide;   ii) from 10 to 35 wt.% of graphite; and iii) from 1 to 25 wt.% of calcium silicate containing from 40 to 54 weight parts of calcium oxide relative to 100 weight parts of the calcium silicate.
Patent GB-2239079-A (GB)
Title: Bleed valve
Inventor: SILVERWATER BERNARD F
IPC: F15B21/044
Filed: 1991-01-25
Abstract: An automatic bleed valve for bleeding air from a pressurized liquid reservoir or, with reversal of principal elements, bleeding liquid from a compressed gas reservoir comprises a piston (30) in a piston chamber (25) located in a flow passage leading from the reservoir. A capillary passage (32) is provided through the piston, and the piston is urged upstream by a spring (36). An orifice is located in the fluid channel. A sealing element (34) is provided at the downstream end of the piston chamber. Upon activation of the hydraulic system while air is being expelled from the reservoir, the spring (36) will retain the piston in the upstream position, allowing gas to be bled from the reservoir through the fluid passage (32) in the piston. When liquid begins to flow from the reservoir, the pressure differential over the piston increases, causing the piston to move against the downstream end of the piston chamber and seal off the fluid channel and the hydraulic reservoir. In Fig. 1, the valve operates in association with a check valve (41), while, in Fig. 3, the piston (30) is biassed by the spring (36) against an upstream valve seat (61). <IMAGE>