baber/WOPTO huggingface dataset:
Patent GB-2021318-A (GB)
Title: Electrical roll capacitor with safety cut-out device
IPC: H01G/
Filed: 1979-04-20
Abstract: A roll capacitor comprises a tubular core 2 on which is wound a roll 1 that shrinks radially on excessive heating, the shrinkage pressure deforming the core by radially compressing its central region and elongating it axially. The displacement consequent upon the radial compression of the centre is utilised to actuate a switch 3, 4 to make or break a protective circuit; in preferred embodiments, either by arranging the axial elongation of the core to close the switch or by arranging the switch to be located internally of the centre of the core so that the switch closes on radial compression of the core centre, so that in either case the capacitor is short-circuited. <IMAGE>
Patent GB-2023258-A (GB)
Title: Attaching a diaphragm valve member in a housing
IPC: F16K7/17
Filed: 1979-05-03
Abstract: Each diaphragm 23, 17 has a central region 1, 15 acting as a valve member and is clamped at its outer edge 8 between parts 6, 10, 12 of the valve housing. With a view to extending the life of each diaphragm, the valve housing is shaped at 24, 25 to provide a support for the intermediate portion of each diaphragm, between the central region and the clamped outer edge, when the respective diaphragm is at the end of its travel. To simplify construction of the valve housing, the support can be provided by a separate ring-shaped member 22 inserted into the housing. <IMAGE>
Patent GB-2025849-A (GB)
Title: Transfer printing
IPC: B44C1/175
Filed: 1979-05-10
Abstract: A pattern printed on a thin film of a polyvinyl alcohol resin is transferred to an object by bringing the object into contact with the thin film which is floated on the surface of water, and thereafter submerging the object under the water. In order to achieve good extensibility of the film on the surface of the water boric acid or a salt thereof is included in either the polyvinyl alcohol film or in the water on which the film is floated.
Patent GB-2051201-A (GB)
Title: Floating Roof Seal
IPC: B65D88/48
Filed: 1979-06-22
Abstract: A seal for use in a floating roof storage tank is disclosed. The seal closes the annular spaced defined between the floating roof (34) and the wall (14) of the storage tank. The seal includes a single, unitary length of pliable material (46) which is folded about the longitudinal axis thereof to superpose the side edges thereof at the top of the seal. The end edges are closed and the superposed side edges are attached to the floating roof. A scuff band (74) is attached to the floating roof so as to be interposed between the envelope (46) and the tank wall (14), and fluent material (47) can be placed into the envelope (30) when the seal is in situ. A method of forming the seal is disclosed, as are secondary sealing means (202, 212, 230) figures 8, 9. The seal ends are formed with a diagonal fold and overlapped Figure 5. <IMAGE>
Patent GB-2027483-A (GB)
Title: Hydraulic reciprocating motor
IPC: F03C1/007
Filed: 1979-07-19
Abstract: Reciprocation of a motor piston 30 is controlled by a two-position, directional control valve 8 having a pilot chamber 18, and a control valve 23 movable between two positions depending on the pressure of working fluid in a conduit 3 on the supply pump 5 side. The control valve 23 is mounted in a passage connecting the pilot chamber 18 of the two-position directional control valve to a valve means 12, 14, 15 capable of bringing the pilot chamber into communication with conduit 17 on the fluid discharging tank side when the piston 30 reaches a predetermined position in its rearward stroke. Alternatively, the control valve 23 may be mounted in a passage connecting the pilot chamber of the two-position directional control valve to another valve means capable of bringing the pilot chamber into communication with the conduit on the pump side when the piston reaches the end of its forward stroke. By the construction disclosed pressure in a working fluid chamber can be raised to a higher level than in prior art constructions. <IMAGE>
Patent GB-2038929-A (GB)
Title: Mixing Pump
IPC: F04B13/02
Filed: 1979-08-16
Abstract: A mixing pump comprises a cylinder 1 having first and second inlets 8, 9 and an outlet 10, means 11 for closing communication between the cylinder and the first inlet and between the cylinder and the outlet, and, inside the cylinder, two movable pistons 2, 3 each having at least one port provided with one or more valves 6, 7. The pump is particularly intended for metering and mixing a relatively thick fluid, or a suspension of solid particles in a liquid, with, for example, another liquid. <IMAGE>
Patent GB-2034079-A (GB)
Title: Lift control system
IPC: B66B5/02
Filed: 1979-09-07
Abstract: A control system, for use with a lift cage CG, has an induction motor IM, normally driven by AC source 12, a dc current source BA for use in case of emergency, and an inverter INV for inverting the dc current into an ac current to be supplied to the motor. The control system includes a speed detector 6 for detecting the speed of the cage and generating a first signal when the cage speed reaches a maximum available speed and until the cage speed decreases to a minimum available speed and a second signal when the cage speed reaches the minimum available speed and until the cage speed increases to the maximum available speed. The second signal is used to cause the inverter to invert the dc current into the ac current for driving the cage while the first signal is used to caused the inverter to generate an intermittent or chopped dc current for damping the cage. <IMAGE>
Patent GB-2065354-A (GB)
Title: Addressing liquid crystal displays
IPC: G09G3/36
Filed: 1979-12-14
Abstract: In a method of selectively addressing a liquid crystal (LC) matrix display, a dyed cholesteric-nematic phase-change cell has all elements periodically accessed in a random sequence at a rate substantially higher than the switching speed of the LC. Except those which are required to switch from 'on' to 'off' or vice versa, all the elements are driven with a random 'sustain' sequence of +V, -V and 0V which when integrated approximates to V/ 2ROOT 2 r.m.s. (3a-3c=3f). Elements which are to be turned 'off' are driven over a number of cycles with zero applied voltage (3a-3d=3g). Elements which are to be turned 'on' are correspondingly driven with a random sequence of +V and -V only (3a-3b=3e). <IMAGE>
Patent GB-2041258-A (GB)
Title: Making mineral insulated electric cable
IPC: H01B13/004
Filed: 1980-02-01
Abstract: In apparatus for the manufacture of mineral insulated cable by a continuous process in which the tubular sheath is formed by bending and seam welding travelling metal strip, and insulating powder and conductor wires are continuously delivered into the sheath while it is travelling vertically downwards, the powder being fed through a tube, a spacer member disposed at or below the outlet end of the powder delivery tube for locating the wires within the sheath is so shaped that at least part of the surface thereof on which the powder impinges has a curved, inclined or tapered profile, for improving control of the flow, dispersal and compaction of the powder. Several forms of spacer member are described. The cables may be general purpose wiring cables, heating cables, thermocouple cables and heating elements for electric cookers. <IMAGE>
Patent GB-2079147-A (GB)
Title: Improvements in convertible furniture
IPC: A47C17/22
Filed: 1980-06-30
Abstract: A sofa or chair bed has a multi- section bed assembly having a rear section (22) which is storable in the back part of the sofa or chair frame to become the back cushion support for the sofa and a mid and forward section (28, 24) which are storable sandwich-like in the seat cavity of the sofa or chair frame to be the seat cushion support for the sofa. The rear section is pivotally attached to the frame structure and is movable outwardly and downwardly to form a part of a bed, the mid and forward sections are movable upwardly and outwardly to form the rest of the bed, all the sections being pivotally connected together, legs (50) are pivoted to section (24). The arrangement allows the bottom of the sofa or chair to be reduced in depth, back to front, facilitating handling.
Patent GB-2062615-A (GB)
Title: Preparing glass preform for optical transmission
IPC: C03B37/014
Filed: 1980-10-06
Abstract: A process for producing a glass preform for optical transmission comprises supplying a gaseous silicon compound, a gaseous nitrogen compound and an oxygen-containing gas as starting gases into a high temperature zone to effect a reaction in such a manner that an oxygen- silicon bond is initially formed and then a nitrogen-silicon bond is then formed to produce a SiOxNy glass. The SiOxNy glass is deposited as a transparent glass on a starting member to produce a nitrogen-doped silica glass, or alternatively is deposited on the starting member as fine particles which are then sintered to produce a nitrogen-doped silica glass.
Patent GB-2063739-A (GB)
Title: A device for ejecting cores from castings
IPC: B22D29/00
Filed: 1980-11-27
Abstract: A device for ejecting cores from castings (a) has a hammer (10) which is positioned in a pivotable holding part (11) and whose striker part (10') acts on the casting (a) while generating vibrations thus causing the core sand to be loosened. The device has a turntable (1) which can be rotated through respective equal indexing steps and is provided with a number of angularly equispaced holders (5) for receiving the castings (a). The pivotable holding part (11) holding the hammer (10) is capable of being moved towards the table (1) into its operative position and away from the table (1) into its inoperative position. Castings may be loaded automatically into the holders (5). <IMAGE>
Patent GB-2071446-A (GB)
Title: Push-pull Amplifier Circuit
IPC: H03F1/02
Filed: 1981-01-28
Abstract: A push-pull amplifier circuit is fully compensated for shortages in bias at times of high power output and its transistors are always maintained in their active regions. The circuit includes at least one pair of output transistors Q1, Q2 coupled in a push- pull circuit arrangement. A variable bias generating circuit controls the bias voltages applied to the bases of the output transistors Q1, Q2 according to the currents flowing in the output transistors Q1, Q2 to cause the output transistors to operate in their active regions. A circuit R7, R8, R9, R10 applies the voltage variation components at supply terminals B1 from which current is applied to the output transistors Q1, Q2 to the variable bias generating circuit to compensate for shortages in bias during times of high power output. <IMAGE>
Patent GB-2095347-A (GB)
Title: Seals
IPC: F16J15/34
Filed: 1981-03-23
Abstract: A seal for a joint subjected to oscillatory motion has a seal ring which is W-shaped in an unloaded condition and which encompasses a load ring 9. The W-shaped seal ring comprises a driving flange 10, a sealing flange 11 and a bight portion 12 inter-connecting the two flanges. The load ring 9 is fitted in the seal ring to force the driving flange into an interference fit with the counterbore walls so as to cause the driving torque to be applied through the seal ring. The thickness of the driving flange 10 and the bight portion 12 is made substantially the same so as to ensure enough rigidity in the radial direction while allowing the seal ring to deform readily in the axial direction. A clearance 14 is thus maintained between the seal ring and a thrust ring 7. <IMAGE>
Patent GB-2075980-A (GB)
Title: Process for preparing N-[2-[[[5-dialkylaminomethyl-2-furamyl]- methyl]-thio]-ethyl]-N'-alkyl-2-nitro-1,1-ethene diamines
IPC: C07D203/12
Filed: 1981-05-13
Abstract: The novel process for preparing the title compounds of the formula   <IMAGE> where R, R<1>, R<2> and R<3> are independently H or C1-3 alkyl comprises reacting a compound II with a compound III   <IMAGE> Compounds III, which are claimed per se, can be prepared by reaction of corresponding 1-methylthio-1-alkylamino-2-nitroethenes with ethyleneimine in the presence of thiophilic metal ions. Compounds II, which are claimed per se, may be prepared by introduction of the mercapto group. Processes for the preparation of compounds V:   <IMAGE> where X is Cl, Br or -S-C(NH)NH2 are also claimed.
Patent GB-2090398-A (GB)
Title: Domestic gas heater
IPC: F24C15/08
Filed: 1981-05-20
Abstract: A domestic gas heater (1) comprises a cabinet provided with castors and adapted to carry a fuel gas bottle. The cabinet comprises two body components, one (3) containing the fuel burners, control devices and a separating screen (11) and the other (2) adapted to carry the fuel bottle. The body components (2,3) each have coupling formations of complementary design located along the edges to be joined. The coupling formations are formed in the body components thus avoiding the provision of separate fastening elements. The formations are such that both a horizontal and a vertical fastening is provided between the bodies and in particular several of the formations are of the hook and eye type. The body components (2,3) are provided with a number of strategically positioned apertures (15,19,20) to aid air circulation, in particular to improve the air supply to the burners and also to improve cooling of the space occupied by the gas bottle. This later space being separated from the burners by the separating screen (11). <IMAGE>
Patent GB-2078701-A (GB)
Title: Hydrothermal Direct Synthesis of Alkali Metal Silicates
IPC: C01B33/32
Filed: 1981-06-24
Abstract: This invention provides a method for the hydrothermal direct synthesis of alkali metal silicate in which an alkali metal compound solution and active silica are reacted with agitation at 60 to 110 DEG C at about atmospheric pressure to form waterglass. The alkali solution may be partially or wholly replaced by waterglass of silicate modulus less than 1.
Patent GB-2081173-A (GB)
Title: Positioning a Flexible Pattern Casting Band in a Spectacle Lens Mount
IPC: G02C13/00
Filed: 1981-07-14
Abstract: In a method of moulding a pattern within a lens mount opening 11 of a spectacle frame, a band 12 of thin, resilient sheet material is curled into a loop and fitted into the lens opening, in such a way that its ends overlap, and then forces are applied, by means of a complementary tool 7, to pins 1 and 2 at the ends of the band, to expand the band to fit closely within the lens mount opening and to bear against its periphery to cause the band to conform exactly to the shape of the opening. The tool 7, spectacle frame and band are then laid on a flat- topped bench so that the lower longitudinal edge of the band lies closely against the bench surface, and a casting medium is poured into the cavity defined by the band and the bench surface. The pins 1 and 2 are disposed on opposite surfaces of the band 12 so that the two ends of the band can overlap closely. The tool 7 has the general form of a pair of pliers, with tubular members 1A and 2A at the ends of the limbs to engage over the pins 1 and 2. <IMAGE>
Patent GB-2105266-A (GB)
Title: Vehicle body conversion
Inventor: RIX BILLY
IPC: B60P3/38
Filed: 1981-09-02
Abstract: A shell 15 sits removably over a cut-out in the roof of a vehicle, e.g. a private estate car, to extend the n headroom inside the vehicle. The shell has fittings which hold a cooker 22 or a power-consuming refrigerator. Normally the cooker or refrigerator sits inside the shell and is held above the vehicle's normal roof line. With the cut out uncovered, by removing a panel from the vehicle roof, the fittings allow the cooker the refrigerator to be swung down through the cut-out into a position in which it hangs inside the vehicle below the vehicle's normal roof line. The shell is floored, for storage of items other than the cooker or refrigerator, and when the shell and its contents are removed from the roof and the panel closes the cut-out and the vehicle is largely indistinguishable from an unmodified vehicle. The detailed shell may be supported on posts adjacent the vehicle and be fitted with side-sheets to form a tented extension of the vehicle interior. <IMAGE>
Patent GB-2085739-A (GB)
Title: Child's ride-on vehicle carrying a spring gun
IPC: A63G19/00
Filed: 1981-10-16
Abstract: The vehicle is constructed so that a child may sit on it with his legs on either side and drive it with leg strokes kicking the ground and has a front housing provided with gun barrels 13 for firing ping-pong balls or simulated bullets. Each barrel includes a compression spring or a plate spring 32 and a shooting lever 14, balls being fed to the barrels via openings 12. The front housing 2 may be turnable about a shaft 30 on release of a push button 11. <IMAGE>
Patent GB-2092464-A (GB)
Title: Continuous casting
IPC: B22D11/12
Filed: 1979-04-04
Abstract: A method of stirring the non- solidified melt 6 in a cast metallic strand 5 from a continuous casting machine, the strand being formed in a mould 3, open at the bottom, and the stirring being performed by at least one electro- magnetic stirrer 7 disposed adjacent to the strand 5. The or each stirrer 7 is supplied with multiphase current at a frequency of from 0.5 to 4 Hz, preferably from 1 to 2 Hz, and effects a stirring of the non-solidified melt 6 upstream of the stirrer 7 and extending up into the mould 3. In addition, the or each stirrer 7 is arranged to provide an asymmetrical stirring effect, for example by arranging for the current supplied to one phase of the stirrer to deviate by at least 10 per cent from the current supplied to another phase. This method of casting contributes to breaking down the fringe crystal zone and the achieving of a finer grained, equiaxial, globular structure in the finished casting. <IMAGE>
Patent GB-2102485-A (GB)
Title: Fastening electrical apparatus
Inventor: LUCAS GERARD
IPC: H02B1/052
Filed: 1982-01-25
Abstract: The disclosed device comprises a platen (1) provided with regularly spaced openings (2, 2', 2''), a shaped rail (14) along the length of which a plurality of pairs of holes (24, 25) are provided, and at least two resilient fastening yokes provided with hooks (42, ..., 45) which engage into empty spaces (38, 39) resulting from alignment of said holes with said openings. The device can advantageously be used for fastening apparatus, particularly electrical apparatus, having a shoe adapted to cooperate with standard shaped rails. <IMAGE>
Patent GB-2114641-A (GB)
Title: Panel bedring hooks
Inventor: STANLEY ALBERT JOHN
IPC: A47F5/08
Filed: 1982-02-11
Abstract: A panel 10 is formed with a plurality of tongues 12 which are displaced from the general plane of the panel and each include a generally flat upright portion 14 which is integrally connected to the remainder of the panel through a connecting portion 16. Each such tongue is reinforced by one or more ribs 18 which extend between the underside of the connecting portion 16 and the adjacent part of the plate 10, such ribs conveniently being pressed out in the same operation as that in which the tongue is formed. <IMAGE>
Patent GB-2098445-A (GB)
Title: Method for cultivating plum trees
IPC: A01H3/00
Filed: 1982-03-19
Abstract: The invention relates to a method for cultivating non-vigorous plum trees, in which a scion of a known superior plum variety is grafted on the wild plum variety "prunus pumila L", which belongs to the "microcerasus" section rather than the "euprunus" section. The stock is appropriately obtained by cloning seedlings. The result is therefore plum trees which are only approximately 40-50% of the normal growth, from which fruit can easily be removed, which are to be planted closer together and are also immune to Scharka virus. A graft stock variety for plums of the "prunus pumila L" variety from the "microcerasus" section is also claimed.
Patent GB-2118011-A (GB)
Title: Spraying crops
Inventor: CURRALL WILLIAM JAMES PORTER
IPC: B05B9/06
Filed: 1982-04-13
Abstract: A crop spraying system mounted on a vehicle comprises a liquid container (14) having a pressuring system, e.g. an air compressor 12, for forcing liquids therefrom to a number of sprayheads (18). The pressurizing system is controlled by a valve 15 in accordance with ambient temperature (to which the valve responds automatically) and the vehicle speed so that a substantially constant quantity of liquid is sprayed per unit area of ground. The liquid is delivered to the sprayheads by a gear pump (16) driven at a speed proportional to that of the vehicle. The pressure downstream of the pump operates on a piston 60 which adjusts the valve 15. <IMAGE>
Patent GB-2099350-A (GB)
Title: Robot type welding apparatus
IPC: B25J19/00
Filed: 1982-04-14
Abstract: A robot type welding apparatus in which a spot welding gun (13) is provided through a wrist mechanism (5) on a front end portion of a supporting arm (2) extending from a main body (1) of a robot, wherein the supporting arm (2) is so constructed as to be movable forwards and rearwards along the main body (1) of the robot, and the wrist mechanism (5) comprises a tiltable wrist base body (7) pivotally supported on a front end portion of the supporting arm (2) and a rotatable wrist member (9) fixed to a front end of a rotary shaft (8) extending longitudinally through the wrist base body (7) and the rotatable wrist member (9) is provided with an expansion arm member (12) projecting therefrom at substantially right angles to the rotary shaft (8), and the welding gun (13) is attached to a forward end of the arm member (12). The rotary shaft 8 carries, at its rear end, rotary connections for welding current and pressure air for gun actuation, and pressure oil for actuation of the arm member 12. The rotary shaft 8 also carries control wires and cooling water. <IMAGE>
Patent GB-2102194-A (GB)
Title: Lithium metal detector
Inventor: DOWN MICHAEL GRAHAM
IPC: H01J47/02
Filed: 1982-04-26
Abstract: An alkali metal detector is modified to operate with a filament electrode temperature of 1000 DEG C or greater to detect lithium atoms and lithium compounds present in a gas. The filament electrode 7, eg. a MoSi2- cermet wire coated with SiO2, may be heated to 1100 DEG C or above using a variable voltage power supply 15 with an ammeter 10 for calibration purposes. <IMAGE>
Patent GB-2101407-A (GB)
Title: Automatic electric kettle
Inventor: DUNN HARDEN
IPC: H01H37/34
Filed: 1982-05-13
Abstract: In an automatic electric kettle a thermally sensitive element 8 is exposed to steam expelled from the interior of the kettle through a vent 22 and steam tube 24 while switch contacts 20, 21, preferably of a trident blade snap-action switch-type, are closed. A shutter 50 movable by the switch 7 has an aperture (53, Fig. 3 not shown) which is aligned with the steam tube 24 while the switch contacts 20, 21 are closed and thereby permits steam to impinge on the thermally sensitive element 8. When the switch contacts 20, 21 open the aperture (53) in the shutter 50 is moved out of line with the steam tube 24 and further impingement of steam on the thermally sensitive element 8 is inhibited, allowing the element to cool. <IMAGE>
Patent GB-2106296-A (GB)
Title: Bulk storage coin dispenser
Inventor: HEYWOOD JOSEPH RICHARD
IPC: G07D1/00
Filed: 1982-06-09
Abstract: The dispenser, for use with coin handling apparatus such as coin-freed amusement machines, coin counting machines and change giving machines, consists of a hopper (1) having a sloping interior surface leading to an aperture (2) in a side wall through which coins pass onto a sloping vibrating platform (13) down which they are fed to a conveyor, preferably in the form of a belt. Above the conveyor is arranged a means in the form of a rotating roller with radial arms which acts to ensure that coins lie on the conveyor in an orderly "end to end" state so that coins are delivered one by one past a coin counting means which can be used to control motion of the conveyor so that it stops after a desired number of coins have been delivered. <IMAGE>