baber/WOPTO huggingface dataset:
Patent GB-2066820-A (GB)
Title: Purification of cashew nut shell liquid
IPC: C11B3/12
Filed: 1981-01-06
Abstract: A method of treating cashew nut shell liquid (CNSL) to reduce the content of dihydric phenols therein comprising contacting the CNSL with a compound (i.e. amines having a basicity above that of diethanolamine, strong organic bases and hydroxides of a metal of group 1A or 2A), which will react with the dihydric phenol content therein to produce a reaction product which is stable under the subsequent distillation conditions and which will not form a reaction product with the monoydric phenol content, which is stable under the subsequent distillation conditions for a period sufficient to allow said compound to react with the dihydric phenols present in the CNSL and thereafter distilling the resulting mixture under high vacuum at a temperature in the range of 160 to 220 DEG C and collecting the distillate which comprises CNSL having a reduced content of dihydric phenols, the reaction product of said compound and dihydric phenols remaining in the residue.
Patent GB-2068430-A (GB)
Title: Stable Solutions of Optical Brighteners
IPC: D06L3/12
Filed: 1981-02-02
Abstract: A stable aqueous solution comprising     a) 5-25% by weight of an optical brightening agent of formula I   <IMAGE>  in which     R1 to R9, X and A<6> are defined in the specification b) 5-70% by weight of an organic monobasic acid or a mixture of organic monobasic acids selected from formic, acetic, propionic, butyric, glycollic and lactic acids,   c) 0-45% by weight citric acid d) 5-55% by weight water the total amount of organic acids present being at least 40% by weight of the total composition.
Patent GB-2094093-A (GB)
Title: Color signal processing device
IPC: H04N9/83
Filed: 1981-02-27
Abstract: In the recording operation of a video recorder, a color signal (3.58 MHz) is frequency-converted to a low frequency converted color signal (688 kHz) by a color signal processing device In the reproducing operation of the video tape recorder, the regenerative low frequency converted color signal (688 kHz) is reconverted to the color signal of original frequency (3.58 MHz) by the color signal processing device. The signal (3.58 MHz or 688 kHz) which has passed a switching circuit (11) is gain-controlled by a color signal amplifier (12) and is input to a balanced modulator (13). A converting signal (F03 = 4.27 MHz) is also input to the balanced modulator (13). The output of the balanced modulator (13) is obtained as a frequency-converted signal (688 kHz or 3.58 MHz) through a low-pass filter (14) or a band-pass filter (16). The converting signal (F03 = 4.27 MHz) is obtained by balanced modulation, at a second balanced modulator (23), of an oscillation output (3.58 MHz) of a first voltage controlled oscillator (22) and a divided output (f02 = 688 kHz) of a divider (31) for dividing the output of a second voltage controlled oscillator (29). <IMAGE>
Patent GB-2097227-A (GB)
Title: FM rebroadcast transceiver
IPC: H04B7/155
Filed: 1981-04-01
Abstract: An FM common channel duplex rebroadcast transceiver comprises a transmitter including a transmitter aerial 1 arranged to be fed via a power amplifier 3 from a modulator 2, and a receiver which includes a single port mixer 8 arranged to be fed from a receiver aerial 6 with a received wanted signal and with the signal which is radiated locally from the transmitter aerial which is utilised by the single port mixer as a local oscillator signal. The transceiver also includes a single side band suppressed carrier generator Fig. 3 (not shown) which includes an oscillator (21) and which is arranged to be fed from the single port mixer so as to provide a resultant signal in which frequency modulation of the received wanted signal is superimposed on the oscillator frequency, and FM discriminator or detector means (28) arranged to receive the resultant signal and to provide an AM output signal corresponding to the received FM modulation which is fed back to control the modulator. <IMAGE>
Patent GB-2096246-A (GB)
Title: Seals
IPC: F16J15/32
Filed: 1981-04-07
Abstract: A method of manufacturing an oil seal having a sealing element constituted by a relatively thin PTFE film 12 directly loaded by a garter spring 18, comprises the steps of expanding the diameter of the garter spring 18 to a dimension sufficient to permit it to surround the sealing element without flexing same (or flexing it insufficiently to cause egress of the garter spring from behind the sealing element), coating the expanded garter spring with a hot liquid wax, allowing the wax to cool, and assembling the coated and expanded garter spring around the sealing element. When such an oil seal is fitted into a shaft sealing arrangement, the wax melts upon attainment of the normal working temperature of say, for example, the pump and the garter spring immediately regains its original diameter dimensions and applies the designed radial load to the sealing element. <IMAGE>
Patent GB-2077063-A (GB)
Title: Timer with touch control
IPC: G07F9/00
Filed: 1981-05-07
Abstract: A timer for controlling a dispensing machine and in particular the dispensing cycle for a product such as coffee, a beverage, or instant mashed potatoes is disclosed. The control includes regulation of the water portion of the cycle and the solid or powder portion of the cycle. The timer IC1, IC2 is controlled by a plurality of touch switches X1-X5 each coupling via a resistor network to the control logic of the timer. The control logic is preferably CMOS-type having a high input impedance permitting use of a resistor network of high resistance to limit current flow especially under fault. The touch switches control functions such as "hot water", "large portion", "small portion", "stop", and "push and hold". In response to operation of switch X5 or X2, a bistable logic circuit is set to enable a timer operation for activating a solenoid and a gear motor. <IMAGE>
Patent GB-2076873-A (GB)
Title: Wall copings
IPC: E04D3/40
Filed: 1981-05-20
Abstract: A coping having a capping 5 and a securing clip 2, the capping being made from a material having a degree of resilience and comprising a top portion from which depend two side portions both having a flange which projects upwardly and inwardly from the side portions, and the securing clip being adapted to straddle a wall or similar structure and comprising a top portion from which depend two side portions which are angled with respect to the top portion so that in use they are substantially parallel to the sides of the wall and the side portions both having a flange which projects downwardly and outwardly from the side portions, the flanges of the capping and the clip being positioned so that in use those of the capping can be sprung over those of the clip. <IMAGE>
Patent GB-2081048-A (GB)
Title: Position Control Circuit
IPC: G03F7/20
Filed: 1980-02-21
Abstract: A position control signal is produced in response to the phase difference between a reference signal f1-f2 and an input signal f1- f2+/-2 DELTA fL1. The latter is produced by the "interferometer" system used in the orthogonally controlled stage of the parent specification. In that system a control signal operates a servo motor to position the stage until a predetermined number of cycles of a difference (doppler) frequency 2 DELTA fL1 (produced by the stage movement) have been counted. The present invention is then brought into use to position to a part (one eight) of a cycle. This is effected by phase shifting the reference frequency by circuit 118 to produce at 126 eight signals, all of the same reference frequency but phase shifted by 45 DEG . The desired arc is selected at 128 and used for the phase comparison at 130. An identical system is used in an orthogonal plane and the sum and difference of the two systems produce the ultimate control signals at 116, 116'. <IMAGE>
Patent GB-2086042-A (GB)
Title: Process for Carrying Out Analytical Determinations by Means of Chemiluminescence, and the Use of the Process for Immunoassay
IPC: G01N33/58
Filed: 1981-08-21
Abstract: In a method for carrying out analytical determinations using chemiluminescence a reagent is labelled with fluoresceinisothiocyanate (FITC) and the chemiluminescence reaction is triggered by adding an oxidant in the form of an aqueous solution of sodium hypochlorite, which may have a concentration of Cl per litre between 2 and 100 g. This method permits the use of a single reagent to trigger the chemiluminescence reaction. An example relates to the detection of HBsAg using Ab(HBs) coupled to polystyrene beads or a microtitre plate, and FITC-labelled Ab(HBs).
Patent GB-2083244-A (GB)
Title: Temperature-sensitive cat's eyes
IPC: G02B5/28
Filed: 1981-08-27
Abstract: By incorporating behind the lens 1 of a cat's eye a reflector- construction 6 comprising a layer of matter having a light reflective property which changes as the temperature of the road surface falls to about 0 DEG C, the possibility of ice formation at night can be indicated to vehicle drivers. The light-reflecting matter may be a thermochromic liquid crystal material, and preferably is a cholesteric liquid crystal material containing one or more chiral nematic liquid crystals. The cat's eye may be made to reflect light over a wide range of temperatures by incorporating therein two layers of different cholesteric liquid crystal materials-for example, one material which reflects green light at above 0 DEG C and a second material which reflects red light at below 0 DEG C. <IMAGE>
Patent GB-2083741-A (GB)
Title: Electrically heated cooking appliance
IPC: A47J37/06
Filed: 1981-09-03
Abstract: A cooking appliance intended principally for use as a portable electrically heated barbeque consisting of a shallow tray-like vessel (10) of cast iron with a bottom (12) surrounded by a low peripheral wall (11). The vessel has feet (15) or other means to support it on a horizontal surface and an electric heating element 16 in contact with the underside of its bottom (12). The vessel (10) has a depression or trough formed near the peripheral wall in the bottom of the vessel and there is a drain hole to permit the drainage of liquid fat from the trough. Handles (32), each consisting of a length of material of low heat conductivity such as wood with its ends connected by a connecting link (34) to the periphery of the vessel, are provided at diametrically opposite points on the periphery of the vessel. <IMAGE>
Patent GB-2092228-A (GB)
Title: Centrifugal pumps
IPC: F04D29/02
Filed: 1982-01-29
Abstract: The pump comprises an impeller 11 provided with a polyurethane layer 22 to resist corrosion due to the abrasive mud which is pumped. The layer may be moulded or cast on a metal core 14, or alternatively the impeller may be cast entirely from polyurethane. The pump housing has a polyurethane or rubber liner 13 and the rear face of the impeller is provided with blades which draw in air through a packing gland 19 to prevent the pumped mud reaching the shaft 15. <IMAGE>
Patent GB-2094874-A (GB)
Title: Carrier for holding articles on ladders
IPC: E06C7/14
Filed: 1982-02-05
Abstract: A carrier for holding articles, such as a pot of paint, on a ladder comprises a channel member 1 which fits over the front edge of the stile 15 of a ladder and has a hook 18 which engages over a rung 20 of the ladder to hold the channel member in position on the stile. A tray 3 is attached to the channel member 1 by a single bolt so that the tray 3 can be twisted relative to the channel member 1 to enable it to be set horizontal whatever the inclination of the ladder. The channel member 1 has an internal insert which is held in position by bolts 12 and is adjustable in position towards and away from the side 8 of the channel member to enable the clear width of the channel member to be adjusted to fit closely over the stile 15. A second hook 19 is provided to enable the channel member 1 to be turned upside down and then fitted to the left-hand stile of the ladder if the tray 3 is required at the left-hand side of the ladder. <IMAGE>
Patent GB-2097664-A (GB)
Title: Base for a stand
IPC: F16M13/00
Filed: 1982-03-10
Abstract: The base of a stand comprises an upright member 10 having pairs of axially spaced apertures 11 near its lower end, the apertures of each pair extending inwardly from opposite sides, and a plurality of feet 13 each being of V-shape and having a pair of out-turned toes which engage in the apertures of each pair so as to strain the limbs of that foot and thereby cause a firm interengagement of the toes in the aperture and a consequentially firm base for a stand. <IMAGE>
Patent GB-2118389-A (GB)
Title: Signal generator arrangement
Inventor: HEWITT SIDNEY JOSEPH
IPC: H03L7/16
Filed: 1982-03-17
Abstract: A signal generator arrangement, particularly for performing frequency division at microwave frequencies, comprises a first oscillator 1, a mixer 3 having two input ports one of which is fed from the first oscillator, and an injection-lockable oscillator 4 (Gunn or Impatt type) which feeds a signal to the other input port of the mixer, the injection- lockable oscillator being arranged to receive, for frequency locking purposes a signal 5 derived from the mixer 3 whereby the signal fed from the injection-lockable oscillator to the said other input port of the mixer is phase locked to a sub-multiple of the frequency of the first oscillator. As shown, the sub-multiple frequency fo can be locked to a reference frequency 8 by a phase- locked loop 6-11. An offset frequency can be incorporated (Figure 3).   <IMAGE>
Patent GB-2117610-A (GB)
Title: An arc plasma generator and a plasma arc apparatus for treating the surfaces of work-pieces, incorporating the same arc plasma generator
Inventor: AXENOV IVAN IVANOVICH
IPC: G06T15/10
Filed: 1982-03-25
Abstract: An arc plasma generator comprises a consumable cathode 1, a cylindrical anode 2, and a focusing solenoid 17 arranged coaxially with the consumable cathode 1. A power unit 15 for maintaining the arc is electrically connected to the consumable cathode 1 and the anode 2. In accordance with the invention the arc plasma generator further comprises a tubular plasma guide 3 connected to an end face of the anode 2 and an electromagnet 6. The electromagnet 6 is arranged in the tubular plasma guide 3 on the axis thereof and is enclosed in a housing 7 made of a nonmagnetic material and having a cross-sectional area sufficient to conceal the cathode 1 from the viewer's sight, looking in the direction of the cathode through the plasma guide. Also, the focusing solenoid 17 is arranged on the tubular plasma guide 3 and is connected in opposition with the coil of the electromagnet 6. <IMAGE>
Patent GB-2100141-A (GB)
Title: Pressure-charged fluidized- bed combustion system
IPC: F23C10/16
Filed: 1982-05-07
Abstract: A fluidized-bed combustion system comprises a fluidized-bed boiler 1 with a supply line for compressed air, means for compressing the air, a discharge line for flue gases and a circuit, for absorbing a portion of the heat generated in the fluidized bed, in which steam is the cooling medium. <IMAGE>
Patent GB-2097472-A (GB)
Title: Internal combustion engine
IPC: F02B23/06
Filed: 1980-09-29
Abstract: The engine cylinder head is fitted with fuel injection offset from the throat area in a conical combustion chamber. To ensure uniform mixing and combustion, the angle (gamma) between the axes (15,16) of a pair of adjacent injection jets (10,11) directed onto the chamber and projected onto the cross-sectional plane of the chamber (4) should be 1.8 to 2.2 times the angle (delta) formed by any pair of adjacent jet axes directed onto the opposite chamber wall (6,4). - As air whirls inside the chamber, fuel is injected through the channel system (10-14) along axes (15-19) to contact the wall at arrowed points (20-24). The radial air flow intersects the fuel jets at given angles move atomised fuel to the chamber centre. The jet tips remove combustion products by sweeping them round to the throat (7). In the expansion phase the fuel vapours are deflected towards the unused chamber air on the opposite side so that the air supply is totally utilised.(1,2)
Patent GB-2102712-A (GB)
Title: Machine tool which can be driven by an electrically powered hand tool
Inventor: CHAPMAN DENNIS LESLIE
IPC: B24B23/06
Filed: 1982-05-21
Abstract: A machine tool having an abrasive endless belt (13) which extends around a drive roller (11) and a driven roller (12) mounted for rotation in a frame portion (10a) of a frame (10), said frame (10) having a frame portion (10b) provided with a mounting plate (27) on which is mounted an electric drill (28) whose chuck (33) engages a drive shaft (14) for driving the drive roller (11). The machine tool can be clamped in alternative positions by a clamp (34) to a support so that the belt (13) either extends horizontally or vertically or the machine tool can be inverted and provided with a handle (36) so as to be used as a mobile sander. An attachment may be fitted to enable the grinding of valves of an internal combustion engine. <IMAGE>
Patent GB-2122762-A (GB)
Title: Flexographic printing plates methods of their production and laminates for use in their production
Inventor: FARGUS DAVID RUSSELL SELWYN
IPC: G03F7/00
Filed: 1982-06-02
Abstract: The present invention relates to flexographic printing plates, methods of their production and laminates for use in their production. A flexographic printing plate comprises a layer of a grindable elastomer (1) having a thickness up to 1000 microns firmly bonded to a support layer (3). A layer of photopolymerised elastomeric material (5) is firmly bonded onto the face of the support layer (3) away from the grindable elastomer (1). The photopolymerised material (5) is produced by exposure of a photopolymerisable liquid to actinic radiation. The support layer (3) may be omitted, and anchor layer(s) (2, 4) may be included. The plate may be ground to uniform thickness. <IMAGE>
Patent GB-2110639-A (GB)
Title: Containers for fluent materials having plastics covers
Inventor: REIL WILHELM
IPC: B65D47/06
Filed: 1982-10-06
Abstract: A packaging for filling materials which are capable of flow comprises side walls (1) of coated cardboard or the like, which are joined together in a tubular configuration by way of at least one longitudinal sealing seam (4), and end walls which are disposed at the ends of the tube member (1), wherein one end wall which forms the cover (2) of the packaging comprises thermoplastic material without a carrier material, is injected to the side walls (1) along its outer edge (6) and has a pouring spout (13) which can be folded inwardly of the outside contour of the packaging for example for transportation, while the other end wall which forms the bottom is quadrangular and has a transverse sealing seam with triangular flaps which are folded over onto an adjacent wall portion. In order to improve such a packaging, with the aim of providing a properly sealed package, while being easy to open, and also providing the possibility of improved and versatile usability, in particular as an aseptic drinking bottle for infants, the invention provides that the cover has a cover wall portion (20) which converges in a tapered configuration towards the center and which leaves a central opening, with a spout or mouthpiece rim portion (14) having a closure member (13) fastened thereto, wherein the cover wall portion (20) is preferably of a frustoconical configuration and the spout rim portion (14) is of a frustoconical or cylindrical configuration.
Patent GB-2108123-A (GB)
Title: Pesticidal aromatic and heteroaromatic alcohol esters
Inventor: TESSIER JEAN
IPC: C07C315/04
Filed: 1982-10-22
Abstract: Compounds of general formula I   <IMAGE>  in which Ar represents an optionally substituted aromatic or heteroaromatic radical, X1, X2 and X3 identical or different, each represent a hydrogen atom or a halogen atom, one at least of the radicals X1, X2 and X3 representing a halogen atom, and B represents an alkyl radical or a substituted cyclopropyl or benzyl radical, are of use in combating pests. Alcohols used in the preparation of these compounds are also claimed.
Patent GB-2110502-A (GB)
Title: Dynamic-type headphone
Inventor: KAMON YOSHIYUKI
IPC: H04R1/20
Filed: 1982-10-25
Abstract: A dynamic-type headphone in which a diaphragm 5 has a bobbin 7 for a voice coil 8 located within a magnetic circuit 3, 2, 1, 4 and is formed of one sheet made of polyethylene terephthalate resinous material and in which, if the diameter of a vibrating portion of the sheet is taken as ??? and the thickness thereof is taken as t then  t DIVIDED ???=4x10<-4> to 5x10<4>. <IMAGE>
Patent GB-2137005-A (GB)
Title: Traffic signalling system
Inventor: DAVIDSON IRWIN MICHAEL SCOTT
IPC: G08G1/04
Filed: 1983-02-04
Abstract: A system for warning the driver of a high vehicle that he is approaching an overhead obstruction, such as a low bridge 9. A sensing arrangement 2, 3, including for example a light beam set at the maximum clearance height, is located well in advance of the obstruction and connected to trigger audible and visual warnings 7, 8, adjacent to the roadway and on the obstruction 9. When the sensing beam is broken by an excessively high vehicle the warnings are triggered to alert the driver to the danger of a collision. <IMAGE>
Patent GB-2124711-A (GB)
Title: Manually operated pump for small dispensers
Inventor: DERCLE BERNARD
IPC: B05B11/00
Filed: 1983-07-25
Abstract: A manually operated piston pump for small dispensing containers, e.g. for cosmetic products or liquid soap, has a locking arrangement comprising a sleeve (8) which projects down into the body (1) of the pump around the stem (5) of the piston (4) and has in its upper rim an inverted L-shaped recess, co- operating with a rib (13) on the lower end of the actuating and dispensing button (7) so that in one angular position of the button (7) the button can be freely reciprocated, whilst in another angular position, preferably about 90 DEG  from the first, it is locked in its rest position. A flange (10) on the sleeve (8) secures a screw mounting cap (2) to the pump body (1) whilst allowing relative rotation. <IMAGE>
Patent GB-2145165-A (GB)
Title: Pumped storage system at tidal power site
Inventor: KINNO HITOSHI
IPC: F03B13/26
Filed: 1983-08-18
Abstract: The system has a first main basin enclosed from the sea 10 by a barrage 2 having a sluice which is opened only during flood tide periods and also a main turbine 4 which generates electricity twice a day during ebb tide periods, and a second basin 5 disposed adjacent to the main basin 1 and enclosed by a barrage 6 having a reversible pump-turbine assembly 7, 8, 15, the pump 7 being driven by the main turbine 4 to lower the water level in the second basin 5 at night. The turbine 8 generates electricity during appropriate daylight hours. Also, the turbine 8 can be operated as a pump 15 which feeds sea water into the second basin 5 in order to increase its water level and to protect the barrage 6 from storm damage. An off-shore dyke 17 of the second basin provides reclaimed land usable as a fish farm. <IMAGE>
Patent GB-2138540-A (GB)
Title: Security device for a liquid- containing tank
Inventor: GREEN JAMES ALEXANDER
IPC: B65D90/34
Filed: 1983-12-21
Abstract: A security device (3) for fitting to the top vent (2) of a liquid-containing tank (1) comprises an air discharge check valve (6) for venting air from the tank (1) during liquid filling of the tank, an air inlet check valve (8) arranged to provide a restricted access of air to the tank (1) to replace liquid during withdrawal thereof from the tank (1), and a pressure switch (11) sensitive to air pressure in the device (3) set to operate only when the sub-atmospheric pressure in the device (3) exceeds a predetermined level lower than the sub-atmospheric pressure normally prevailing in the device when liquid is withdrawn from the tank (1) at its normal maximum rate. Switch (11) may be connected to a servo-device (14) controlling valve (8) and/or to an alarm so as respectively to stop or reduce leakage and/or to warn of leakage from the tank. <IMAGE>