baber/WOPTO huggingface dataset:
Patent GB-2205425-A (GB)
Title: Pseudo four quadrant multiplier for use in power measurement meters
Inventor: WILLIAMS P G
IPC: G01R21/127
Filed: 1987-06-03
Abstract: A pseudo four quadrant multiplier is based upon rectification 1, 2; 3, 4 of both input signals followed by an interaction between a voltage to frequency converter and a pulse width modulator. The current (i) signals lead to a signal whose frequency corresponds thereto, the voltage (v) signal leading to a pulse width modulated signal of high frequency. The signals are logically combined to produce pulse trains corresponding to positive and negative power, which are fed to up/down counter 15. Full wave rectification may be used. (Fig. 2). <IMAGE>
Patent GB-2194085-A (GB)
Title: Bus
Inventor: BLACKMORE KEVIN DARYL
IPC: G06F15/173
Filed: 1987-07-15
Abstract: A bus arrangement which is particularly suitable for use with systems involving transputers is disclosed, which bus is a two wire bus connected to the one pair of the INMOS link connections on a transputer (RTM), 4. Spur lines are taken off the bus to other transputers in a system, which transputers may form part of physically separate circuits or modules. These spurs are fed through link selectors which examine a part of messages present on the line to decide whether that message is intended for that particular transputer. If so, the link selector allows messages to be passed to and from that particular transputer. <IMAGE>
Patent GB-2194763-A (GB)
Title: Compound exterior rear-view mirror for a vehicle
Inventor: KANAMORI TETUO
IPC: B60R1/06
Filed: 1987-09-01
Abstract: The mirror unit comprises a main mirror 2 for providing a general rearward view, and a secondary mirror 3 for providing a view of the lower side part of the vehicle, both mirrors being incorporated in a single unit. <IMAGE>
Patent GB-2214639-A (GB)
Title: Swimming pool water sensor
Inventor: NAZARYAN SAMPSOM
IPC: G01N27/416
Filed: 1988-01-12
Abstract: A hand-held sensor body (11) with a pronged probe (12) contains an ion meter-indicator (14) for chlorine concentration and ion for pool water acidity. The sensor (41) is D.C. powered and the probe has dual metallic rods extending from the hand-held probe and terminating in alloy sensor tips. The body of the sensor containing the indicator also detachably encases (21) the hand-held probe when the probe is not in use. The body of sensor includes an area of reduced width (34) for a battery chamber for the probe cable and to facilitate handling. The battery chamber has contacts for connections to the indicator. There are control knobs (24) mounted on the body for an adjustable potentiometer imposed in the electrical circuit.
Patent GB-2205047-A (GB)
Title: Food mixer and blender
Inventor: STAR LEONARD JONAS
IPC: B01F7/08
Filed: 1988-01-20
Abstract: A mixer for food products in commercial quantities comprises a horizontally elongate body with a pair of trough bottoms in which rotates one or more horizontal drive shafts carrying an agitator in the form of a helical ribbon (31) or worm of a radius matching that of the trough bottom. The ribbon supports a number of scraper units (48) on it, each scraper unit including a scraper body (49) having a broad face (50) facing toward the trough bottom, the broad face terminating in two opposed relatively sharp edges (55). The scraper bodies are mounted for rocking movement so that the leading edge will be forced into scraping engagement with the trough bottom and will remain in engagement with the trough bottom even though the trough is wavy or uneven. Each scraper unit (48) is mounted on the helical ribbon (31) by means of a leaf spring (56) and clevis (62) to allow movement in two directions at right angles of one another. Either of the edges of the scraper body can be the leading edge, depending on the direction of rotation of the agitator drive shaft. <IMAGE>
Patent GB-2215044-A (GB)
Title: Detection of diamines in biological fluids
Inventor: HEWLINS MICHAEL JOHN EDWARD
IPC: C12Q1/26
Filed: 1988-03-01
Abstract: A fast-acting and portable diagnostic kit for detecting diamines in biological fluids is in the form of a diamine oxidase and a chromogenic system to detect the presence of hydrogen peroxide resulting from oxidation of such diamines. The kit may especially be used to detect cadaverine or putrescine or a mixture thereof, for example in a vaginal secretion, in order to detect Gardnerella-related bacterial vaginosis. The chromogenic system may be composed of peroxidase, 4-aminoantipyirine and a phenolic compound (e.g. 3, 5-dichloro-2-hydroxybenzenesulphonic acid).
Patent GB-2225721-A (GB)
Title: Easy fitting condom
Inventor: POWELL SIMON COLIN
IPC: A61F6/04
Filed: 1988-07-20
Abstract: A barrier contraceptive in the form of a condom which is fitted with a tension operated unfurling ribbon to enable faster, easier fitting, less manual contact and easier removal from the package. <IMAGE>
Patent GB-2207592-A (GB)
Title: Portable grass cutter
Inventor: TOMITA HIROSHI
IPC: A01D69/02
Filed: 1988-07-28
Abstract: A portable grass cutter driven by an engine 2 having a starting motor comprises a cutter unit and a suspension band 5. The cutter unit has an output shaft operatively connected to a crankshaft of the engine, a tubular rod 3 for rotatably mounting the output shaft therein, and a round blade 4 operatively connected to the output shaft so as to be rotated by the output shaft. A battery for the starting motor is attached to the band and coupled via leads 12 to an upper connector 6 on the band which connects with a lower connecting member 7 secured to the rod adjacent the engine. <IMAGE>
Patent GB-2221355-A (GB)
Title: Grounding screened cables
Inventor: NEELY NICHOLAS HENRY
IPC: H01R13/648
Filed: 1988-07-28
Abstract: The screens of a bundle of cables are grounded by locally baring the screens of the cables and then wrapping a constant-force spring (10) around them so as to make contact with the bared screens and press together the screens of the adjacent cables. The spring (10) may then be connected to a connector to which the cables are connected.
Patent GB-2211680-A (GB)
Title: Driver circuit for solenoid
Inventor: IKAWA YOSHIHARU
IPC: H01H47/32
Filed: 1988-10-19
Abstract: A driver circuit for energizing a solenoid 11 includes first and second switches 16, 17 for determining the direction in which electric current is to flow through the solenoid 11, first and second noise removers 20, 21 for receiving signals produced by operating the switches 16, 17, first and second monostable multivibrators 18, 19 triggerable by shaped pulsed signals generated by the noise removers 20, 21, for producing signals having pulse durations required to drive the solenoid 11, and first and second relays 12, 13 energizable by the pulsed signals from the multivibrators 18, 19 for selectively passing bidirectional electric currents from a battery 24 through the solenoid 11. A resetting circuit 23 prevents unstable operation. The solenoid controls the coupling of an operating lever 4 to a vehicle bonnet lock 5. <IMAGE>
Patent GB-2223504-A (GB)
Title: Solid lubricant composition
Inventor: JAMISON WARREN E
IPC: C10M171/00
Filed: 1989-01-25
Abstract: A solid lubricating composition useful for lubricating the flanges of railcar wheels and rails and for other similar applications. The lubricant composition comprises from about 16% to about 70% by weight of a polymeric carrier, from about 20% to about 70% of a lubricating oil, from about 10% to about 65% of a solid lubricating powder, and from about 0.25% to about 18% of a surface active agent comprising a metallic dithiophosphate and an organic molybdenum compound and a tackifier in an amount not less than 0.3% by weight, all percentages by weight of the total composition. The solid lubricant composition is mixed and introduced into a screw type extruder wherein it is heated and extruded through a die into a waterbath, forming an elastic rod or strand. The lubricant composition is applied to a surface to be lubricated by rubbing it onto the surface in a thin film. The surface active agent enhances the attachment and embedment of the dry lubricating powder into the surface being lubricated, the lubricant composition serving to reduce both wear and friction between contacting surfaces lubricated thereby. Also disclosed is an article of solid lubricant composition which comprises first and second distinct compositions the first composition comprising a core covered by a layer of the second composition.
Patent GB-2229203-A (GB)
Title: Multi-storey steel building
Inventor: BOOKER BRIAN ANTHONY
IPC: E04B1/342
Filed: 1989-03-10
Abstract: The invention provides a multi-storey demountable building comprising a plurality of vertical steel pillars or columns (8) arranged at predetermined distances from one another, steel joists (11) extending between and bolted to said pillars or columns and steel floor sections (13) supported by and bolted to said joists (11). The building of the invention is particularly suited to providing temporary car parking space (Fig. 1). <IMAGE>
Patent GB-2233320-A (GB)
Title: A method of conditioning decolorising clay minerals
Inventor: MOERL LOTHAR
IPC: B28C1/00
Filed: 1989-06-30
Abstract: The invention relates to a method of conditioning activated decolorising clay materials which are used for the adsorption of colourings and other accompanying substances derived from oils or fats, for the bleaching or decolorising of edible oils and for the cleansing of oil products. The object of the invention is to improve the quality of the conditioned activated decolorising clay material and to achieve an increase in bleaching or decolorising power. According to the invention, the activated decolorising clay material which is present as a suspension is spread out in a layer in which an inert substance has a drying gas flowing through it, is simultaneously dried and is comminuted to a granulation diameter of less than 90  mu m. The reduction in flow velocity is brought about by a linear widening of the cross section.
Patent GB-2237076-A (GB)
Title: Clutch cover assembly manufacture
Inventor: BICKNELL GRAHAM ROBERT
IPC: F16D13/58
Filed: 1989-10-05
Abstract: A method is disclosed for the manufacture of a clutch cover assembly comprising an annular cover, a diaphragm spring S, Fig 4, and a pair of fulcrum rings X & Y, the fulcrum rings X and Y and the spring S being secured to the cover by tabs T passing through the spring S and bent to clinch the assembly together. The free ends of the tabs T are bent around the fulcrum ring X, located adjacent the spring S, which is supported at spaced arcuate lengths around its periphery during the bending process. The gaps between the supported portions of the ring X are aligned with the tabs T and are provided by recesses 74 in a press tool. The unsupported portions of the ring X lie between the points P2 & P3, Fig 5, in the respective recess 74 and have a lesser circumferential width than the nominal circumferential width L1 of the tabs T. A press forming tool for use in the method has an outer surface 66 with radial projections 73 for the tabs T, a curved forming surface 63 on each projection, and an annular array of castellations 64. <IMAGE>
Patent GB-2229505-A (GB)
Title: Vacuum booster
Inventor: HAMAMIYA FUMIHIRO
IPC: B60T13/563
Filed: 1989-12-22
Abstract: In a vacuum booster a vacuum passage (14) formed in a valve body (7) to provide communication between a control valve and a constant pressure chamber is furnished with a groove (14a) formed by a forming die used for moulding the valve body (7). …<??>The groove (14a) increases the sectional area of the vacuum passage (14) so that the air in the variable pressure chamber flows in a larger quantity toward the constant pressure chamber, to enable a quicker return to the rest position following a power stroke. …<IMAGE>…
Patent GB-2229676-A (GB)
Title: Mechanism for detecting presence of ribbon stopper in a ribbon cassette used in a printer
Inventor: KAWAURA MASAFUMI
IPC: B41J32/00
Filed: 1990-02-07
Abstract: In a selective printing arrangement in which a printer operates in conjunction with an exchangable ink ribbon cassette, and in which the cassette is provided with a removable ribbon stopper or detent for immobilising the ribbon during transport or shipping, the printer is adapted to sense the presence of the stopper and to immobilise the ribbon drive if it is still present. 
<??>The printer may be provided with a closable cover bearing an abutment which prevents the cover from closing if the stopper is still on the ribbon cassette, and an arrangement for preventing operation of the ribbon drive if the cover is not closed. 
<??>OBJECT: to prevent damage consequent on operating the ribbon drive while the ribbon is immobilised. 
<IMAGE>
Patent GB-2230292-A (GB)
Title: Scaffolding
Inventor: WILBREY ROYSTON GEORGE
IPC: E04G3/20
Filed: 1990-03-29
Abstract: A scaffold member 10 has two spade-end portions 12 which in use, engage with and are supported by respective brick or block walls, such as the walls of adjacent houses in a dense development. Spacing means 14 set the spacing of the two end portions 12 and consist of a sleeve 16 and a tubular member 20 which is sufficiently small to be a sliding fit in the sleeve 16. Flexible connection 24 links the range of relative movement. When the end portions 12 are separated as required, they may be locked in their relative positions by means of a screw member 22 or, in another embodiment, a pin fitting in a selected one of a series of holes. In this second embodiment, the range of movement is limited by a pen-and-slot arrangement. The sleeve 16 and tubular member 20 can be axially rotated relative to one another, to allow the spade-ends to have various orientations relative to each other. Welded-on plates 30 are used to lever out the spade ends. <IMAGE>
Patent GB-2231359-A (GB)
Title: Pulling tool and method
Inventor: PLEASANTS CHARLES W
IPC: E21B21/00
Filed: 1990-05-01
Abstract: A pulling tool for pulling an operating tool from a downhole location in a wellbore includes an elongated tubular housing assembly (10) which is connectable to a section of reeled tubing and defines a longitudinal bore through which fluid passes from said reeled tubing. A passing (28) extends through the housing assembly (10) and communicates with the longitudinal bore of the housing assembly (10) for discharging the fluid against the wall of the wellbore and the fishing neck (70) of the operating tool to clean same. A latching assembly (40) is disposed on the housing assembly (10) for latching to the fishing neck of the operating tool as the housing assembly (10) is inserted into the fishing neck (70) to enable the fishing neck and the operating tool to be pulled from the wellbore. In the event the operating tool cannot be pulled from the wellbore, the flow of fluid through the passage (28) of the housing assembly can be blocked (72) to enable the fluid pressure to build up in the bore of the housing assembly (10) to release the latch (40) and allow the housing assembly (10) to be removed from the wellbore. <IMAGE>
Patent GB-2244016-A (GB)
Title: Bolt
Inventor: RAYBONE PAUL R
IPC: E04G17/065
Filed: 1990-05-17
Abstract: A bolt 2 is made by tapping a threaded hole 10 in a first rod 4, welding the first rod coaxially at 8 with a second rod 6 and arming a thread 12 on the free end of the second rod. The bolt thus formed comprises two welded parts, a first part having a threaded hole extending along the length thereof and the second part having an external thread at its free end. <IMAGE>
Patent GB-2232435-A (GB)
Title: Security shield
Inventor: COWIE ALISTAIR GORDON
IPC: E06B9/04
Filed: 1990-06-01
Abstract: A security shield primarily for protecting doors and windows of empty houses comprises a rectangular frame three side members (6, 8, 10) of which are integral with one another to form a first frame portion (2), and the fourth side member (38) of which is separate therefrom to form a second frame portion (4), the first and second frame portions (2, 4) each being provided with associated securing means (36) for attachment of the frame to a receiving surface. The shield is completed by a separate screen (40) of sheet material for location in the frame, installation of the shield being achieved by securing the first frame portion (2) to an associated receiving surface, sliding the screen (40) through the open side of the first frame portion (2) and into said first frame portion (2), and securing the second frame portion to the receiving surface to complete the frame and to retain the screen (40) within the frame. <IMAGE>
Patent GB-2245950-A (GB)
Title: Chain links
Inventor: BLAIR CICELY PEARL
IPC: F16G15/12
Filed: 1990-06-29
Abstract: A toroidal link (1), for forming a chain with a plurality of other substantially identical links, is formed with a substantially Z- or S-shaped profile. In a preferred embodiment, the link has upper and lower loops (2, 3) lying in substantially parallel planes, with the closed part (4, 5) of the loops being remote from one another; each intermediate portion (6, 7) of the link is substantially coplanar with the normals to said planes over at least part of its length. <IMAGE>
Patent GB-2235098-A (GB)
Title: Spindle motor control arrangement
Inventor: NAKAGAWA AKIO
IPC: H02P8/22
Filed: 1990-08-06
Abstract: A spindle motor has a rotor (1a, Fig 1); a magnetic disk (3) disposed on the outer periphery of the rotor; a multiphase motor coil L1-L4 supplying rotation power to the rotor following excitation by drive current; a power supply 7, 8 which supplies the drive current to the motor coil in phase; a rotation monitor (10, Fig 4) which monitors the state of rotation of the rotor and outputs monitoring signals; a controller (11) which outputs control signals according to the monitoring signal; and a phase adjuster 9, Q1-Q4 which supplies drive current from the power supply to the motor coil in a specified number of phases according to the control signal. The motor is therefore started at high torque by energising 2 phase coils at a time and then switched to a lower torque by energising the coils one phase at a time once the motor speed has reached a specified value (eg half the target value). The coils may be energised two phases at a time for a time determined by a timer at the controller 11 after which they are energised one phase at a time. <IMAGE>
Patent GB-2241381-A (GB)
Title: Rotary switches
Inventor: RAO CHEPUR PRABHAKER
IPC: H01H19/58
Filed: 1990-11-23
Abstract: A rotary switch for small appliances such as electric fans comprises base 12 and cover assemblies, the former 12 having output terminals 20, 22, 24 e.g. for low, medium and high speed and a splice terminal 26 in side-by-side relation along one edge thereof for wedgingly receiving the bared ends 52, 54, 56, 58 of a ribbon cable 50, or alternatively receiving the bared ends of separate leads, and an input terminal 28 and the opposite end of the splice terminal 26 located at the opposite edge of the base 12. A rotatable actuating shaft carries a contact having contact fingers whereby the shaft may be rotated so as to effect an electrical connection between a selected one of the output terminals 20, 22, 24 and the input terminal 28. The cover has a plurality of partitions which serve to isolate from each other the bared ends of the leads that engage the output terminals, when the cover and base are assembled to each other. <IMAGE>
Patent GB-2250165-A (GB)
Title: Rod rest
Inventor: ALDRIDGE ANDREW ALEXANDRA
IPC: A01K97/10
Filed: 1990-11-27
Abstract: A rod rest comprises a light source by means of which the rod-receiving arms can be illuminated to enable ready location of the rest at night.
Patent GB-2239117-A (GB)
Title: Bicycle anti-theft device
Inventor: FLATLEY JAMES
IPC: G08B13/14
Filed: 1990-12-03
Abstract: The anti-theft device is adapted for connection with the frame of a bicycle and comprises a control box, an electrically conducting cord 21 extensible therefrom against the action of resilient recoil means 24 to connect with a socket 14 to complete an electrical circuit, and means adapted to give a warning signal if said circuit is broken without the device having first been disarmed. A bracket 28 and associated screws 29, 30 for connecting the device to the bicycle frame also forms part of the electrical circuit. Separate batteries 25, 27 may be provided and are preferably recharged from a dynamo. <IMAGE>
Patent GB-2255556-A (GB)
Title: Procedure for delivering a substance into an aquifer
Inventor: DEVLIN JOHN FREDERICK
IPC: E02D31/00
Filed: 1991-01-21
Abstract: A permeable wall (4) is located in the material of an aquifer (2), in the path of an approaching plume (3) of a contaminant (eg a chlorinated solvent). The wall comprises a body (7) of permeable filler material, eg sand and gravel, which is placed in a trench (5) that has been cut down into the aquifer material. Biologically-aided breakdown of the contaminant is aided by the presence of nutrients in the groundwater, and injection ports (18) are provided in the wall, through which the nutrients are injected periodically. The permeability of the wall helps the injected nutrients to spread laterally through the plume. The injected substances are contained in a volume of water; this water may be water which has been extracted from the trench, draw-off wells being provided in the trench for that purpose. A second permeable wall may be provided downstream for injection of eg air. <IMAGE>
Patent GB-2243058-A (GB)
Title: Improvements in or relating to radio communication
Inventor: HILLUM RICHARD ARTHUR
IPC: H04B1/68
Filed: 1991-03-14
Abstract: In a tone-in-band (TIB) single-sideband-modulated communication system used to communicate digital data:-   a) In order to compensate for variations due, eg, to doppler shift of the pilot tone in the received signal, during the sweep of the frequency of a local oscillator used to tune the receiver, the output of a narrow band filter is monitored for the presence of the expected pilot tone. When the pilot tone appears to be present, the sweep is interrupted and the error rate of the demodulated digital signal is tested, the sweep being resumed if an excessive error rate is encountered. b) In order to counter misreception due to co-channel interference, the pilot tone is offset by a small but detectable amount from that used in a co-channel transmission in preparing the TIB transmission either by using a different frequency split-point or by producing the signal in a slightly different part of the channel.   <IMAGE>
Patent GB-2254751-A (GB)
Title: Digital video effects; ray tracing for mapping a 2-d image onto a 3-d surface
Inventor: HEDLEY DAVID JOHN
IPC: G06T15/04
Filed: 1991-04-09
Abstract: A digital video effects system maps a source video image comprising an array of source pixel values onto a 3-D non-linear object surface to produce an output image. The system comprises a memory for temporarily storing an array of image pixels, control means for establishing a function defining the 3-D non-linear surface and an address generator responsive to the surface function established by the control means to compute memory read addresses by tracing rays for respective output pixels. The address generator performs recursive subdivision of the surface function for each ray such that each subdivision generates a plurality of surface patches, and determines a memory read address for the output pixel corresponding to a ray on detecting an intersection between the ray and a patch at a desired resolution. The surface function used, is a Bezier surface function and the address generator applies parallel ray tracing on an object transposed into perspective viewing space. <IMAGE>