baber/WOPTO huggingface dataset:
Patent GB-2206952-A (GB)
Title: Valve seat
Inventor: NICHOLSON TERENCE PETER
IPC: F16K1/226
Filed: 1987-07-13
Abstract: A metal valve seat for a butterfly valve or ball valve and has the form of an apertured disc with a radially outward part (4A) by which it is securable to a valve body and a radially inward dished part (4B) which projects laterally around the disc aperture. The valve seat (4) is characterised in that the disc part (4B) is formed circumferentially with a plurality of web-connected fingers (40) which have a radially inward surface of varying generative radius. The invention also consists in a butterfly valve or a ball valve incorporation one or a pair of such metal valve seats.
Patent GB-2197715-A (GB)
Title: Roof ridge ventilator and ventilated roof ridge structure
Inventor: GIBSON COLIN FREDERICK
IPC: E04D13/17
Filed: 1987-07-22
Abstract: A roof ridge ventilator (100) for ventilating an interior of a roof structure. The roof structure comprises a plurality of roof ridge tiles arranged in a row. The ventilator comprises ventilation means for providing a ventilation path between said interior of the roof structure and an external environment. The ventilator is adapted to be disposed between adjacent roof ridge tiles. The ventilator acts as a connector for joining together adjacent roof ridge tiles. <IMAGE>
Patent GB-2194268-A (GB)
Title: Road hazard warning device
Inventor: VOCKINS ROY
IPC: E01F9/615
Filed: 1987-08-25
Abstract: A portable road hazard warning device is a rigid structure having an outer wall which is mainly opaque but with one part being of light transmitting material. A battery operable illuminating means is disposed within the structure with the illuminating means being behind the light transmitting material so that in use the structure can be seen more easily. The device is preferably in the form of an elongate post which forms part of a safety barrier system. <IMAGE>
Patent GB-2202968-A (GB)
Title: Heat exchanger control
Inventor: NASH MICHAEL CHARLES
IPC: G05D23/24
Filed: 1988-01-29
Abstract: The present invention relates to the control of an energy producing source for a heat exchanger, for example the boiler of a central heating system, airflow fan or refrigeration motor. Many known heating systems cannot respond effectively to changes in the load on the system (eg changes between cold weather and hot weather). The present invention monitors the temperature of outgoing and incoming working fluid for comparison with limit values in order to control the energy source and, additionally, adjusts the limit values themselves in accordance with sensed condition(s). The sensed condition(s) may again be the working fluid temperature(s). For example, in conventional systems an hysteresis value for switch on and off of the energy producing means is fixed. With the present invention, the hysteresis value can be varied in accordance with the monitored conditions of the energy producing means. This leads to more efficient operation. <IMAGE>
Patent GB-2219270-A (GB)
Title: Containers of electrically insulating material
Inventor: WALLIS PHILLIP ANDREW
IPC: B65D25/38
Filed: 1988-04-28
Abstract: A container 11 of electrically insulating material, eg moulded from a plastics material such as polyethylene, has a necked orifice 16 through which the container may be filled or emptied. An electrically conductive coating 15 extends around the orifice, and preferably along one side of the container and around the base. By standing the container on a conductive surface, the build-up of static electricity during filling is prevented, by attaching an earth wire to the coating, static discharges may be prevented during emptying by tipping. The coating may extend into the orifice and over the inner surface of the container. The coating may be a pre-formed metallized plastics film or metal foil bonded to the container surface, a metal oxide coating, a metal or graphite loaded paint, a metal alloy such as zinc hot melt sprayed onto the container. An earthing lead can be clipped to bead 14. <IMAGE>
Patent GB-2223071-A (GB)
Title: Stud and socket connector for elongate members
Inventor: GARRISON DENNIS STANLEY
IPC: F16B7/20
Filed: 1988-07-28
Abstract: An intermediate device which comprises two parts (6, and 8) to be secured together in axial alignment. The device comprises an interfitment member (10) secured in an axial bore (12) of the part (8), protruding therefrom, and a sleeve (14) secured in an axial bore (16) in the other part (6). Both the member (10) and the sleeve (14) are knurled. The interfitment member (10) comprises a body part (10), in use located within the bore (12), an elongate stem (22), and a head (24) which is generally semi-circular in shape. Located within the sleeve (14), in screw-threaded engagement therewith, is an engagement member (38), provided with an axial slot (46) enabling the head of the interfitment member to be passed therethrough, behind shoulders (39). Rotation of the part (8) causes the head (24) to engage a face (48), whereupon further rotation of the part (8) causes the engagement member (38) to rotate in screw-threaded engagement with the sleeve (14) drawing the two parts securely together. The device can be used to join the parts of cues and fishing rods. <IMAGE>
Patent GB-2209626-A (GB)
Title: Contact support for electrical switch
Inventor: BATES ARTHUR
IPC: H01H23/16
Filed: 1988-10-18
Abstract: An electrical switch includes a moving contact in the form of a flat strip of conductive material (25) which is mounted in a channel of a pivotal plastics support (27). The contact pivots on a pivot (22) joined electrically to a cable receiving member (21A). Longitudinal movement between contact and support (27) and between support and a switch base (20) is prevented by interengaging projections and recesses e.g. base grooves (29) that receive the support in a channel (18). The support is mounted in the base (17) along with fixed contacts (23, 24) and is retained therein by a cover (30). Also provided is an actuating mechanism (42) which includes a pivotal rocker (43) which carries a spring loaded plunger (44) engageable with the support (27). The rocker is retained in position relative to the cover by a retaining member (45) which can be secured to the cover. Rocker portions (51) more the contact if welding occurs. Other contacts can be provided in a second base channel (18) and plural switches can be mounted in a common support. <IMAGE>
Patent GB-2212950-A (GB)
Title: Industrial control systems
Inventor: GRIMBLE MICHAEL JOHN
IPC: G05B13/04
Filed: 1988-11-25
Abstract: PCT No. PCT/GB88/01024 Sec. 371 Date Feb. 14, 1989 Sec. 102(e) Date Feb. 14, 1989 PCT Filed Nov. 25, 1988 PCT Pub. No. WO89/05002 PCT Pub. Date Jun. 1, 1989.An adaptive H INFINITY  industrial control system has a controller 21 controlling an industrial process 20 (ship, rolling mill, etc.), the state of which is measured (y). The controller and process outputs are fed to a parameter estimator 34 which estimates the operating polynomials (transfer functions or delay operator functions) A, B, and C of the process. A controller design unit 35 processes the output of estimator 34 to produce coefficients for the controller 21, which implements a polynomial ratio Cn/Cd. The H INFINITY  algorithm is based on minimizing a "square of sum" form of function (Pcxu(t)+Fcxe(t))2, which results in equations which are easier to solve than those arising from the usual "sum of squares" form of function. A polynomial L=Pcn Fcd B-Fcn Pcd A is calculated, the unstable zeros L- are calculated, the matrix equations  FAPcd lambda +L- G=Pcn CF*z -n  FBFcd lambda -L- H=FcnCF*z -n are calculated, the extreme eigenvalue extracted, the corresponding eigenvector extracted, and Cn and Cd calculated as GFcd and HPcd for passing to the controller unit 21. Alternately, G and H can be calculated by an iterative convergent procedure. The parameters of Fc and Pc may be adjustable.
Patent GB-2208829-A (GB)
Title: Ink jet recording
Inventor: OHBA TAKASHI
IPC: B41J2/05
Filed: 1988-12-23
Abstract: An ink-jet recording apparatus provided with a recording head having an electrothermal energy converter for generating thermal energy to heat and emit a recording ink comprises an emission signal generator to generate an emission signal, a heating signal generator to generate an electrical signal which has a level within a range such as not to emit any liquid droplet and is applied to the electrothermal energy converter, and a temperature sensor to detect a temperature of the liquid existing in the recording head. The heating signal generator is driven on the basis of the temperature information detected by the temperature sensor. With this apparatus, the optimum heating condition is selected and the ink viscosity suitable to form the ink droplets is obtained in a short preheating time, after turning on the power supply or after a period of inactivity with the power on. A separate electrothermal converter for the preheating, and controlled coupling between heater and a cap which movably covers the discharge opening may also be provided.
Patent GB-2227971-A (GB)
Title: Bevelllng apparatus for use with a wood thicknessing machine
Inventor: DYSON KENNETH
IPC: B27C1/14
Filed: 1989-01-24
Abstract: Woodworking apparatus for use in combination with a thicknessing machine to produce a bevelled surface on a length of timber 12 consists of a base 24 adapted to rest on the work table of the thicknessing machine. A workpiece support 30 is pivotally connected at one side to the base and can be locked in adjusted position relative to the base so that the length of timber resting against a fence 56 mounted on the support can have a bevelled surface formed thereon which corresponds to the angle between the support and the base of the apparatus as the timber is passed through the thicknessing machine. <IMAGE>
Patent GB-2230095-A (GB)
Title: Measuring apparatus
Inventor: BUTLER EDWIN TERRY
IPC: G01B5/008
Filed: 1989-04-08
Abstract: Measuring apparatus (10) comprises a base (12) having a surface (13) upon which an article to be measured can be disposed. The apparatus also comprises support means capable of carrying a sensing device for sensing the surface of the article. The support means comprises first and second members (16, 18) wherein the support members engage the base at said surface and are movable nearly relative to said base. A connecting member (22) is also provided to connect the first and second support members. The connecting member is disposed at the opposite side of the base to the surface (13) engaged by the support members. The base has sloping faces (12a)(12b) and air bearings (24), (25). <IMAGE>
Patent GB-2218924-A (GB)
Title: Surface-treated polyorganosilsesquioxane powder
Inventor: SAITO KENJI
IPC: C08L83/12
Filed: 1989-04-12
Abstract: A block or graft copolymer comprising a polyalkylene and a polysiloxane segment, preferably bonded via a trimethylene group, preferably of average mol. wt. 1000 to 20,000, is used to treat the surface of a powder, preferably of average diameter 100 mu m or less of a polyorganosilsesquioxane. 
<??>The treatment can be by direct absorption, optionally with grinding, or using a solvent for the copolymer. 
<??>The surface treated powder has a small specific gravity, good hydrophilicity and dispersibility in organic liquids and is useful e.g. in cosmetics.
Patent GB-2234472-A (GB)
Title: Wheeled trolley
Inventor: GILL DARON MARK
IPC: B62B5/00
Filed: 1989-06-13
Abstract: A framework (27) supporting a load container (47) is raisable and lowerable by a jack (21), the container (47) is detachable from the trolley (1) and the trolley is foldable for storage. The trolley (1) is particularly suitable as a supermarket trolley and can raise and lower a basket of goods from and to the floor of a hatchback vehicle for instance. The jacking means may comprises a pivoted cam arrangement, a screw and nut arrangement, or a hydraulic arrangement.   <IMAGE>
Patent GB-2224754-A (GB)
Title: 4- or 7-substituted indoles for dyeing hair and other keratin
Inventor: LANG GERARD
IPC: A61K8/00
Filed: 1989-09-11
Abstract: Keratin material (fur, skin, and especially human hair) is dyed with indoles of formula (I) or salts thereof -
 
<IMAGE>
 in which:
 R1 is H, lower alkyl or -Si(alkyl)3
 R2 and R3 are each H, alkyl, CO2H, CO2 alkyl or CO2Si(alkyl)3;
 R4-R7 are each H or OZ where Z is H or defined etherifying or esterifying groups; or any adjacent pair of R4-R7 are linked to complete a ring;
 characterised in that - 
 
  (a) at least one of R4 and R7 is OZ; and 
  (b) at least two of R4-R7 are other than H. 
 Compounds I may be applied in conjunction with oxidants (including nitrites), metal oxidation catalysts, iodides, direct or oxidation dyes, or 5,6-dihydroxyindole. 
<??>The following compounds and their salts are claimed per se - 1-methyl-4-hydroxy-5-ethoxyindole
 2-methyl-4-hydroxy-5-methoxyindole
 2-methyl-4-hydroxy-5-ethoxyindole
 2,3-dimethyl-4-hydroxy-7-methoxyindole
 2,3-dimethyl-4-methoxy-7-hydroxyindole
 4-hydroxy-5-ethoxyindole
 5,7-dimethoxy-6-hydroxyindole
Patent GB-2240459-A (GB)
Title: Tobacco feed system
Inventor: HRBOTICKY KAREL
IPC: A24C5/18
Filed: 1990-01-31
Abstract: In a system for feeding tobacco to a cigarette making machine, a closed airflow is set up in a suction band apparatus (10) by means of a fan (82) through a chimney (76) and an air-permeable band (84) upon which a tobacco layer (86) is formed for feeding to the cigarette making machine, tobacco particles being entrained into this closed air stream from a hopper apparatus (12) through which a further open air circulation system is established, there being but a sole airflow connection (72) between the closed airflow system (80) and the open airflow system, through which connection air passes to compensate for leakage in the closed system. This connection may be established via a further closed airflow system within which further tobacco particle processing takes place, and additional closed airflow systems in which other processing steps take place may be similarly connected to the open airflow system. The arrangement permits the elimination of air locks between various portions of the system.
Patent GB-2229791-A (GB)
Title: A piston for discharging liquid from a liquid applicator
Inventor: NAGAI TORU
IPC: B05C17/00
Filed: 1990-02-27
Abstract: A piston for pushing liquid out of a reservoir of a liquid applicator such as a writing instrument has two circular walls (3,3a) which seal against the inner surface of the reservoir (1). One of the walls (3) is shaped to permit the piston (4) to be advanced. The other wall (3a) forms an angle of from 90 DEG  to 135 DEG  between its axially inner face and the inner surface of the reservoir (1). This ensures that, if an attempt is made to retract the piston (4), the wall (3a) frictionally binds with the inner surface of the reservoir (1) to prevent retraction. Thus, there is no need for a metal disc, as in the prior art, to prevent retraction (see Fig. 3). Also, the piston (4) may be made of plastics material which will not scratch the reservoir (1), thus permitting refilling and reuse of the reservoir (1). <IMAGE>
Patent GB-2245853-A (GB)
Title: Vehicle accessory
Inventor: ASHMAN COLIN HOWARD
IPC: B60C29/00
Filed: 1990-06-19
Abstract: A device for facilitating the removal, storage and replacement of the dust cap of a vehicle tyre, comprises a tubular member 1 having an open end 2 formed with a tapered bore 3, the internal wall 4 being provided with a plurality of spaced tapering splines 5 which diverge outwardly from the base 6 of the bore 3 to provide a gripping and locating surface for the dust cap of the valve of a vehicle tyre. The opposite end of the tubular member may be provided with another tapered bore or alternatively the outer surface may be knurled as shown at 8 to provide a gripping surface. Alternatively, the end of the tubular member remote from the tapered bore 3 may be tapered to a point to allow the point to be inserted in the valve to release air from the tyre. <IMAGE>
Patent GB-2245590-A (GB)
Title: Gold alloy for black coloring, processed article of black colored gold alloy and method for production of the processed article
Inventor: TAKAYANAGI TAKESHI
IPC: A44C27/00
Filed: 1990-06-26
Abstract: A gold alloy for black coloring comprises gold and at least one coloring metallic element selected from the group consisting of Cu, Fe, Co and Ti with optional additions of at least one alloying element selected from the group consisting of Pt, Pd, Rh, Ir, flu, Os, Ag and Ni and/or of Zn. The gold alloy mentioned above, may be heat-treated in an oxidizing atmosphere and cooled.
Patent GB-2248771-A (GB)
Title: Hanger for footwear
Inventor: LOUW HENRY JOHN
IPC: A47G25/00
Filed: 1990-10-17
Abstract: A hanger for suspending shoes from a rail or other supporting structure is provided. It includes an elongated suspension member 12 located in a first plane; a hook 14 joined to the suspension member for engaging with a rail or other supporting structure; and at least one shoe engaging member 16, 18 joined at one end to the suspension member and extending towards the engagement means. The shoe engagement member(s) are in a plane inclined to the plane of the suspension member. <IMAGE>
Patent GB-2241471-A (GB)
Title: Parking card or ticket
Inventor: KEAVENEY MARCUS PATRICK
IPC: G09F1/00
Filed: 1991-02-26
Abstract: A parking card or ticket (1) of the type comprising a plurality of numbers (11, 12, 13, 14) and abbreviations (15) printed thereon for enabling a time at which parking commences to be indicated, uses self-adhesive tabs (18) which are secured to the card or ticket for selecting the time and date at which parking commences. The parking card or ticket is provided with a receiving surface (4) which has a relatively high affinity to the adhesive of the tabs (18) to prevent the tabs being removed without damaging the receiving surface. The parking card or ticket may be in book form (Fig. 10) with the tabs (18) provided on a carrier sheet (22) having a release surface (23). <IMAGE>
Patent GB-2241894-A (GB)
Title: Massage mat
Inventor: YOO YOUNG-YOON
IPC: A61H23/02
Filed: 1991-03-12
Abstract: Massage apparatus includes a mat having massage cells 1 arranged in each of several lateral and vertical rows and wrapped in cloth or synthetic leather to be vibrated individually, and a control device 5 for the massage cells, so as to change massaging area, intensity and operating time. The mat can be fixed to a chair or a seat in a vehicle, spread on a bed or rolled round an arm or a leg. <IMAGE>
Patent GB-2246020-A (GB)
Title: Manufacturing ceramic green sheet
Inventor: KOGAME TOSHIHIKO
IPC: H01G13/00
Filed: 1991-04-17
Abstract: A long composite of a long carrier film and a green ceramic layer (1) continuously formed thereon along its longitudinal direction is prepared and continuously guided successively to a printing station (6), a drying station (14) and a punching station (13) while being maintained in the long configuration, so that a conductor film is printed on the green ceramic layer with conductive paste in the printing station, the printed conductor film is dried in the drying station, and the green ceramic layer provided with the conductor film is punched in a state being registered with the conductor film and separated from the carrier film in the punching station, whereby a ceramic green sheet for a laminated ceramic electronic component such as a capacitor, inductor or circuit board is extracted. A cutter having a spring-urged blade mounted on a suction pad is used to cut and separate the sheet and feed it to a stacking station. Alternatively, the cutter successively cuts and holds the stack. <IMAGE>
Patent GB-2248008-A (GB)
Title: Data transmission system
Inventor: TRIDGELL RONALD HUGH
IPC: H04L1/00
Filed: 1991-06-21
Abstract: In a message transmission system, a transmitter 10 segments a message in store 20 into multi-word segments which are transmitted individually, each with a header (from 22) including a message identifier. A receiver 11 receives the segments and reassembles them into the message in store 30, and also returns acknowledgements. The lengths of the segments are selected in accordance with a predetermined pattern of different lengths. In the system shown, the segment length is alternated between 32 and 31 words by a segment length unit 23 in the transmitter and a segment length unit 35 in the receiver tracks this. Thus two successive segments can be sent, but a third segment (of length matching the first) cannot be sent until an acknowledgement (from 34) of the first has been received (at 24). For broadcasting, a receiver only accepts a message if the pattern of segment lengths matches the preset pattern. <IMAGE>
Patent GB-2252328-A (GB)
Title: Sintered alloy bearing
Inventor: KIKUCHI ISAMU
IPC: C22C38/00
Filed: 1991-07-23
Abstract: A sintered alloy bearing produced by compaction molding and sintering a composition comprising 20 to 80 wt % of iron, 15 to 77 wt % of copper, 1 to 26 wt % of zinc, 0.5 to 7 wt % or less of lead, 0.5 to 7 wt % of tin and the balance of unavoidable impurities to a porosity of 8 to 30 vol %. Since this alloy has not only normal mechanical strengths and corrosion resistance but also excellent fit, it is suitable used as the material of a motor bearing of an audio appliance.
Patent GB-2258272-A (GB)
Title: Rotors for turbo machines.
Inventor: MARSHALL ROBERT GEOFFREY
IPC: F04D29/32
Filed: 1991-07-27
Abstract: There is provided a rotor arrangement comprising primary blades 16 mounted on a support disc 15 and secondary blades 18 mounted on a support disc 17. The secondary blades are disposed beween respective primary blades with some axial overlap. The set of secondary blades is movable relative to the set of primary blades so that each secondary blade can be moved between end positions abutting the associated pair of primary blades. This enables variable geometry of the combined primary/secondary blade shape. Various arrangements are disclosed for mounting the discs 15 and 17 and for providing relative movement therebetween (Figs 6 to 10). <IMAGE>
Patent GB-2249201-A (GB)
Title: Dual selection system for a reference frequency for use in a clock
Inventor: LEE BYUNG HEE
IPC: G06F1/14
Filed: 1991-07-30
Abstract: A system for selecting either of two reference frequency sources for a real-time clock comprises a microcomputer 10, a system oscillator 24 of 4.194304 MHz, a system frequency divider 26 to apply a buffered system clock signal to the microcomputer 10, a clock oscillator 27 of 32.768 KHz, and a variable-ratio frequency-divider 30 to apply a buffered real-time clock signal of 1 Hz to the microcomputer. When an option is selected by use of a diode OD1, a system oscillation signal of 4.194304 MHz is selected at 28 and frequency-divided at 30 by 2<22> to give the clock signal of 1 Hz. When the option is not selected, the clock oscillation signal of 32.768 KHZ is selected at 28 and frequency divided at 30 by 2<15> to give the clock signal of 1 Hz. Selection switch 28 and the division ratio of frequency divider 30 are controlled by signals from the microcomputer. <IMAGE>
Patent GB-2248749-A (GB)
Title: Cellular radio telephone system
Inventor: KALLIN HARALD
IPC: H04W68/00
Filed: 1991-08-13
Abstract: In a system in which each mobile station (M1-10) periodically scans the system paging channels for the strongest signal, each base station (B1-10) broadcasts a rescan command to those mobile stations operationally connected to it at predetermined intervals. Pages to be sent to the mobile stations are stored immediately following broadcast of the rescan message until such time as all mobile stations have had an adequate opportunity to carry out the rescanning operation. The incidence of calls lost due to pages being sent to a mobile station while it is rescanning is thereby reduced. <IMAGE>