baber/WOPTO huggingface dataset:
Patent GB-2015291-A (GB)
Title: Improvements in electrical switching circuits using transistors
IPC: H03K17/0814
Filed: 1979-02-02
Abstract: An electrical switching circuit for use in chopped power supplies and a.c. to d.c. inverters in which, in order to reduce large transient voltages occurring across the switching elements of such devices, a series connected diode 3 and capacitor 2 are connected across the switching element, transistor 1. The capacitor 1 is connected such that it remains charged to the full d.c. power supply potential, whether transistor 1 is on or off, but tends to become charged to a higher potential still, when the transistor 1 is turned off, due to circuit inductances L1, L2. A diode 4 is connected to limit this rise of potential by switching on whenever the potential across capacitor 2 rises above that of the d.c. supply, thus causing the potential at the junction of capacitor 2 and diode 4 to fall below that of the negative d.c. supply rail. <IMAGE>
Patent GB-2015983-A (GB)
Title: Improved Deposition Method
IPC: C03C17/245
Filed: 1979-03-07
Abstract: This invention relates to transparent glass window structures of the type bearing a first coating 6 of infra-red reflective material, which is advantageously less than about 0.85 microns in thickness, wherein the observance of iridescence resulting from such a first coating is markedly reduced by the provision of a layer 4 of continuously varying refractive index between the glass 2 and the coating 6, such that the refractive index increases continuously from the glass to the first coating, thereby preventing the observation of iridescence. The coatings are applied by passing the substrate through a reaction zone in parallel with a reactive gas mixture which contains components for forming the two coatings, wherein the reaction to form the first coating proceeds more rapidly. A particular advantage of the invention is its efficacy with clear and lightly tinted glasses wherein the problem of iridescent color has had its greatest commercial impact. <IMAGE>
Patent GB-2020693-A (GB)
Title: A method for the improvement of the yield from hops in brewing beer
IPC: C12C7/20
Filed: 1979-03-23
Abstract: A method for improving the yield from hops when brewing beer comprises treating the hops by steeping them, then crushing the steeped hops before they are added to a wort copper. During steeping the hops are mixed with about thirty times the quantity of water and subjected to a temperature of not more than 85 DEG C for a period of 60 to 90 minutes. The hops are then separated from the water and crushed in a disintegrator in the form of a modified pin mill having a plurality of rows of striker pins mounted in concentric circles of alternately increasing diameter on two counter-rotating positively driven parallel grinding discs. The crushed hops are added to the wort in a wort copper and may be added to the wort in stages in a known way. Equipment for carrying out the method is also described comprising a heatable vessel 7 Figure 1, in which the hops may be steeped, and having a vapour extractor, a sieve 8 for separating water from the steeped hops and a modified form of pin mill 9. The crushed hops and filtrate from the sieve 8 are passed to the wort copper 5. <IMAGE>
Patent GB-2025584-A (GB)
Title: Pyrotechnic device
IPC: F42B12/36
Filed: 1979-05-21
Abstract: A pyrotechnic device which comprises a charge of explosive material, preferably gunpowder or other flash composition, means for ignition of this charge suitably frictional or electrical, and a protective casing, suitably made of a plastics material or metal, which is adapted to direct the force of the explosive charge on ignition. The device preferably further comprises means for attachment of the device such as a clip or bracket, to a fixed object such as a building or a tree. The device is useful for the training of personnel, in particular armed service personnel, to accustom them to conditions of combat.
Patent GB-2050060-A (GB)
Title: Vacuum switches
IPC: H01H1/02
Filed: 1979-05-22
Abstract: In a vacuum circuit breaker of the type comprising coil electrodes for producing longitudinal magnetic flux and contacts made of Ag- WC sintered alloy, the intensity of the magnetic field is made to be higher than 50 gauss/IB, where IB is the current in the breaker. <IMAGE>
Patent GB-2022395-A (GB)
Title: Steel toe-cap for safety footwear
IPC: A43B23/08
Filed: 1979-05-25
Abstract: A steel toe-cap (1) for a safety shoe is provided with an edging strip (3) around the edge (2) of the opening. The edging strip, which is formed from a resilient material such as rubber, tapers towards its free edge and is provided with a flange (4) which extends under the lip of the toe-cap to provide a smooth transition into the interior. The strip may be notched transversely at intervals (9). <IMAGE>
Patent GB-2050861-A (GB)
Title: Apparatus for cleaning gases
IPC: B01D47/10
Filed: 1979-06-09
Abstract: Gas scrubbing apparatus for use in conjunction with a liquid storage tank for noxious liquids, comprises a drum 20 to be mounted on an opening in the top of the tank 12, the drum having upper and lower chambers 22, 23, a tangential liquid inlet 26 into the lower chamber, a bottom opening from this chamber into the main storage tank, a stand pipe 29 from the lower chamber with an opening 30 to atmosphere at its upper end and also containing a lateral duct 31 through which a water spray injector 33, positioned in a venturi throat 32, 35, draws gases from the strand pipe, scrubs the gases and conveys them into the upper chamber 22 from which they issue to atmosphere through a demister 41. <IMAGE>
Patent GB-2025321-A (GB)
Title: Resilient composites
IPC: B32B25/08
Filed: 1979-07-13
Abstract: The invention relates to resilient composites which may be useful as sports surfaces or flooring and to a method of making them. The composite comprises a plasticised vinyl chloride composition bonded without an adhesive interlayer to at least one component comprising a particulate vulcanized rubber in a matrix of a plasticised vinyl chloride polymer composition. The particulate vulcanised rubber is either nitrile rubber or a rubber which has been treated with either bromine, chlorine or an organic polyisocyanate. Bonding is effected by the application of heat. The aim of the invention is to provide a well-bonded resilient composite with minimal staining problems.
Patent GB-2030381-A (GB)
Title: Holder for an imitation candle- type electric lamp
IPC: F21S4/00
Filed: 1979-08-20
Abstract: A socket for an imitation candle- type of electric lamp, comprising a cylindrical sleeve (1) housing a contact assembly (2) for connecting the electric lamp to an electric power line, and a support (3) for the sleeve. The contact assembly (2) includes means for being positioned and locked inside the sleeve (20, 12) by means of the support (3) latching onto the sleeve. <IMAGE>
Patent GB-2062809-A (GB)
Title: A ball valve assembly
IPC: F16K5/06
Filed: 1979-11-07
Abstract: A ball valve assembly 1 includes a bal valve member 2 made of a plastics resin material, preferably polyvinyl chloride, and movably mounted in a valve cavity 7 formed in a valve body A again made of a plastics resin material, preferably polyvinyl chloride. The valve body A consists of two body elements a, b coupled in a male-and-female connection with each other and rigidly and permanently united together thereat. Thus, the ball valve member 2 is confined in the valve cavity 7 in an unseparable way, and co-operates by direct and resilient contact with a pair of seat rings 4, 4' made of an elastomer or elastic rubber. These seat rings 4, 4' are so shaped and arranged when seen in an axial section of the valve assembly that they represent four limited contacting areas a, e, f and g, with the ball valve member 2 exerting sealing and supporting pressures against the ball valve 2 all directed substantially towards the centre of the member 2. <IMAGE>
Patent GB-2041111-A (GB)
Title: Improvements in rollers
IPC: F16J15/447
Filed: 1979-11-09
Abstract: The present invention relates to an annular labyrinth seal for a bearing of a roller, the seal having at least one annular lip 38a' projecting axially thereof and at least one annular lip 34a' projecting radially thereof. <IMAGE>
Patent GB-2038893-A (GB)
Title: Device for Heat Treatment of Man-Made Fibres
IPC: D02J13/00
Filed: 1979-12-17
Abstract: The present invention relates to a device for heat treatment of man- made fibres by direct and substantially permanent contact of the fibre with a contact heating surface. The disadvantages encountered in hitherto known devices, i.e. reduced strength of the fibre after treatment and rather high intricacy in design of the device, are avoided in the present invention in that the heating body 1 is provided with a longitudinal groove 3 of which the bottom forms a contact heating surface, and a detachable metal lid 5 is tightly placed to the heating body along the whole length of the groove. The detachable metal lid may be formed of a thin tape tensioned by axial tension, and said lid may be provided with openings connected to an exhaust channel for the heat treatment products. <IMAGE>
Patent GB-2039342-A (GB)
Title: Rolls for use in corrugated fibreboard production and processing machines
IPC: F16C13/00
Filed: 1980-01-07
Abstract: A roller 1 with various uses in machines for the production of corrugated fibreboard is formed with its outer surface having a degree of elasticity. In the illustrated case this is achieved with tubes 12 wound helically on roll body 11 from the middle outwards and inflatable through passages 13, if desired with a rotary joint. Instead of passages 13, a syringe may be employed. Other embodiments have only a single helical tube, a plurality of circumferential tubes, tubes extending longitudinally of the roll, either parallel to or at a small angle to the axis of the roll. Solid resilient cords can be used instead of the tubes. Other embodiments use one or more sheaths around the body 11, and these may define one or more inflatable spaces, may incorporate air cells or bubbles, or may be of cellular material. Reinforcements may be incorporated in such sheaths. <IMAGE>
Patent GB-2084852-A (GB)
Title: Device for extinguishing a lighted cigarette
IPC: A24F19/14
Filed: 1980-01-11
Abstract: A device for extinguishing a lighted cigarette has a housing (1) with a cigarette receiving opening (3;9) for receiving, there-through, a burning tip of a cigarette; and pincer means comprising at least a pair of coacting spring means (4,4';8) mounted adjacent to the opening disposed apart a distance less than the diameter of a cigarette. The arrangement is such that when the burning tip of a cigarette is pushed through the opening (3;9) and the pincer means, the coacting spring means (4,4';8) are flexed apart and, on withdrawing the cigarette, the burning tip is pinched off from the remainder of the cigarette by the pincer means. <IMAGE>
Patent GB-2067479-A (GB)
Title: Trolley for transporting stacks
IPC: B62B1/12
Filed: 1980-01-15
Abstract: The trolley comprises two tubular struts 1, 2 connected by cross-bars (3), a clamping sleeve (13), being provided for connecting all parts to the struts, the clamping sleeve (13) having a tensioning screw (16) projecting inside the sleeve and having a free spacing from the axis of the sleeve which is greater than the inner radius of the tubular strut 1, 2 at this point. <IMAGE>
Patent GB-2067648-A (GB)
Title: Lock mechanism
IPC: E05B37/00
Filed: 1980-01-21
Abstract: A lock mechanism having a dial 1, a selector mechanism 7, 12 connected with the dial and being arranged to be operable to locate a plurality of first security members 8 in preselected positions. A second security 13 member is also provided adjacent the first security members for engagement herewith. The first and second security members have complementary shaped portions 37, 36 which are arranged to be aligned in the preselected positions of the first security members so that operation of a mechanism 14 interengages the complementary portions of the first and second security members. The mechanism 14 carries the member 13 and when operated raises the member 13 to engage the members 8; the raising frees the lock mechanism for spring release. <IMAGE>
Patent GB-2069662-A (GB)
Title: Improvements in flush valves
IPC: F16K21/04
Filed: 1980-02-18
Abstract: A flush valve e.g. of the Sloan Flush Valve type for use in drought conditions and having a mains water inlet (12) communicating with a water outlet (14) via a seat (18) normally closed by a diaphragm (22) seating a relief valve (32) operable by a plunger (40, 38) to tilt the relief valve off its seat, is provided with a ring body (60) freely housed between the relief valve and the flush valve cover (44, 46) to limit the displacement of the relief valve and reduce the volume flow of the flush valve during flushing. <IMAGE>
Patent GB-2046372-A (GB)
Title: Cooling pump seals
IPC: F16J15/16
Filed: 1980-03-14
Abstract: A liquid pump, particularly a water pump for an i.c. engine, comprises an impeller (4) rotatably mounted on a shaft (3) and sealed to the shaft (3) at the suction side by means of axial sealing means comprising a mating ring (12) fixed to the impeller (4), a sliding-contact ring (11) urged into sliding contact with the mating ring (12) by means of a spring (9) accommodated in an annular seal housing (8), and a bellows seal (10) arranged between the spring (9) and the shaft (3). There is at least one cooling passage (14) in the impeller, e.g. in the hub (4a) extending from the pressure side to the suction side substantially at the radially-outer periphery of the mating ring (12) for directing liquid from the pressure side towards the sliding contact ring (11) and the bellows seal (10) thereby cooling the axial seal and scavenging the seal area to remove gas. <IMAGE>
Patent GB-2051932-A (GB)
Title: Road Cones
IPC: E01F9/012
Filed: 1980-07-07
Abstract: A road cone device comprises a first base portion (2), in the form of or adapted to receive a road cone, alongside a second base portion (3), recessed or otherwise adapted as at (4) to receive a warning lamp (6). The device provides a stable road warning device, especially when in combination with a warning lamp. <IMAGE>
Patent GB-2086967-A (GB)
Title: Road surface hump
IPC: E01F9/529
Filed: 1980-11-07
Abstract: A preformed rubber speed ramp which is fixed to a road surface to provide a low obstacle over which vehicles may pass and thereby receive a shock comprises two substantially flat inclined surfaces (12 and 13) which are of substantially different length and inclination, so that a different effect is felt by a vehicle driver depending on the direction of travel of the vehicle over the ramp. <IMAGE>
Patent GB-2074305-A (GB)
Title: Heat Exchangers
IPC: F28F23/00
Filed: 1981-04-15
Abstract: A heat exchanging apparatus 10 comprises an elongate chamber 11, which is part filled with a heat transfer medium 12, and a pair of U-shaped pipes 13, 14. The pipes are spaced from one another, but are generally mutually adjacent so that heat from a liquid flowing in one pipe can be transferred through medium 12 to the liquid in the other pipe. If one or other of the pipes ruptures the escaping liquid can be vented at 19 and will not intermix with the liquid in the other pipe. A level detector 22 detects a rise in the level of the material in the chamber 11 when a pipe ruptures and closes valves 18 to prevent further loss of liquid. The apparatus is particularly suitable for use in the food industry or where one of the liquids is toxic or radioactive. <IMAGE>
Patent GB-2078621-A (GB)
Title: Working glass objects and the like by laser radiation
IPC: B23K26/142
Filed: 1981-06-26
Abstract: Method and apparatus for working the surface of glass objects and the like by infrared laser radiation where an electric signal from an optical pick-up device scanning a pattern controls the laser discharge so that the impinging laser radiation causes a change in the optical permeability of the glass and/or evaporation of glass material solely along a line or over an area, corresponding to the pattern.
Patent GB-2079481-A (GB)
Title: Method for the formation of surface relief patterns using deep ultraviolet radiation exposure of resist composition
IPC: G03F7/20
Filed: 1981-07-01
Abstract: A negative acting resist composition is used which comprises a novolak resin which has a window of low optical absorption in the deep ultraviolet range and an aromatic azide sensitizer which has a complementary peak of high optical absorption in the deep ultraviolet range. The resist composition is exposed with deep ultraviolet radiation in the window/peak region, for example, at about 250 to 265 nm, and is thereafter developed with an aqueous alkaline solvent to provide a negative surface relief pattern.
Patent GB-2075115-A (GB)
Title: Hatch closure mechanism
IPC: E05F1/10
Filed: 1980-11-21
Abstract: Hatch closure mechanism for interconnection between a hatch (11) and a hatch surround (10). The hatch closure mechanism includes a hatch connection member (17) connectable to said hatch (11) and a hatch surround connection member (15) connectable to said hatch surround (10). There is also provided an intermediate member (23) interposed between the hatch connection member (17) and the hatch surround connection member (15) which is pivotally attached to both of these members. The intermediate member (23) is associated with biasing means (26) in such a manner that the biasing means (26) may maintain the hatch (11) in either a closed or open position and movement of the hatch (11) from one position to the other is achieved against the bias of the biasing means (26).
Patent GB-2081316-A (GB)
Title: Automatic loading of seamless tubular stocking blanks onto a stocking blank holder
IPC: D05B23/00
Filed: 1981-07-22
Abstract: Stocking blanks 5 are picked up by their welts hook 6 of a pick-up unit A. A transfer unit B indents spreader pegs T, T' in the open welt which then move to enlarge the welt opening. The transfer unit B then moves towards a stocking blank holder C of a conventional toe closing machine, and a toe end of the stocking blank S is sucked part-way into a suction tube P while the enlarged welt opening is passed over an end of the suction tube P. As movement of the transfer unit B continues, the end of the stocking blank S is pulled back out of the tube P so that the blank is turned inside out on the exterior of the tube. The transfer unit B is then withdrawn in readiness for a toe closing operation. <IMAGE>
Patent GB-2086466-A (GB)
Title: Security clamp for surgical device
IPC: A61M39/10
Filed: 1981-08-24
Abstract: A clamp for securing a joint a tube, e.g. an infustion set, and a parenteral surgical device such as a catheter, comprises first locating means such as a resilient clip 2 for attaching to said tube, second locating means 7 for attaching to said surgical device, means e.g. In the form of telescopically slidable members 1, 4 for adjusting the separation of said first and second locating means to accommodate joints of different lengths, and means, e.g. a ratchet 3, for locking said adjustment. <IMAGE>
Patent GB-2084978-A (GB)
Title: Growing silicon ingots
IPC: B22D27/09
Filed: 1981-08-26
Abstract: In the process of producing silicon ingots of substantially single cystallinity by heating silicon in a crucible to above its melting point and solidifying the melted silicon by extracting heat from the bottom of said crucible with a heat exchanger in heat-conducting relationship with a portion of the bottom of said crucible the improvement wherein said silicon used in said heating step has an impurity level greater than 100 ppm, whereby impurities in said silicon are caused to migrate to exterior surfaces.
Patent GB-2104982-A (GB)
Title: Friction clutches
Inventor: DAVIES DAVID AUBREY
IPC: F16D13/58
Filed: 1981-08-29
Abstract: A vehicle friction clutch has a driven plate (14) with central hub assembly (21) for mating with a gearbox input shaft (22). In order to detect wear to the driven plate friction facings (17) and (18) the hub assembly (21) carries a resilient projection (27) which is engagable with a projection (30) on the clutch pressure plate (15) after a predetermined wear has taken place to the adjacent facing (18) which exhibits maximum wear. The striking of the driven plate projection (27) with the pressure plate projection (30) will only occur during operation of the clutch and can be used to operate a warning device. <IMAGE>
Patent GB-2082913-A (GB)
Title: Emulsifiable Non-aqueous Solvent-flowable Compositions Containing an Insoluble Pesticide
IPC: A01N25/04
Filed: 1981-09-02
Abstract: An emulsifiable non-aqueous solvent-flowable pesticide composition which comprises a non- aqueous solvent having a pesticide suspended therein and a suspending agent for the pesticide which is a natural clay having a base-exchange capacity of at least 15 milliequivalents of exchangeable base per 100 grams of clay and which has previously been modified, or is modified in situ, by treatment with a salt of an alkyl C1-10 amine, a cycloalkyl C5-7 amine, or an alkyl C1-6 cycloalkyl, C5-7 amine, or with an acid based surfactant neutralized with one of these said amines. Another pesticide may be dissolved in the solvent e.g. chlorpyrifos, chlorpyrifos methyl, diazinon, azodrin, parathion, methyl parathion, malathion, fenvalerate, cypermethrin, decamethrin, acephate, chlordane 2,4,D, MCPA, MCPP, trifluralin, butylate, alachlor, metribuzin and diuron.
Patent GB-2113550-A (GB)
Title: Surgical knife
Inventor: KEMP NICHOLAS RICHARD
IPC: A61F9/013
Filed: 1982-01-21
Abstract: A surgical knife for use in eye operations in which the depth of cut is critical comprises a diamond blade (10) having a cutting edge (14) which projects (X, Y) above a datum surface (13). The blade (10) is connected to a rod (15) which is coupled by threads (18) to an adjusting thimble (19) which in turn is coupled by threads (20) to the shank (4) of the instruments. The threads (18, 20) are of the same hand but of slightly different pitch so that rotation of the thimble (19) produces small and well defined movement of the blade. This enables coarse threads (18, 20) to be used which in turn allows the entire device to be made of titanium. <IMAGE>
Patent GB-2115055-A (GB)
Title: Deadbolt
Inventor: GATER ARNOLD C
IPC: E05B63/00
Filed: 1982-02-17
Abstract: A deadbolt comprises a crank arm 20 which is mounted on a rotatable hub 18 and is pivotally connected to the rearward end of driving lever(s) 24, the forward end of which is pivotally connected to a longitudinally slideable bolt 36. Rotation of the crank hub 18 moves the bolt 36, via the crank arm and driving levers, forwardly to a bolt-extended position and rearwardly to a bolt-retracted position. The bolt is held in these positions by a pin 28 which engages slots 38 and 42 respectively of the latch frame 10. The bolt is positively urged towards its extended and retracted positions by the engagement of the cam surface 44 of the hub 18 with a U-shaped spring 52. The forward frame slots 38 may be formed hookshaped to positively retaining the pin 28 therein. <IMAGE>
Patent GB-2118586-A (GB)
Title: Vehicle parking area
Inventor: NICHOLS COLIN JOHN
IPC: E04H6/42
Filed: 1982-03-16
Abstract: A vehicle parking area having a wall 1 or 2 along at least one side and means for positioning a vehicle close to the wall comprising a longitudinally extending rail 4 or 5 or other structure so located relative to the wall that when a conventional motor vehicle moves relative to the guide rail or structure with the tyre wall of two of its wheels in contact therewith, contact between the wall and the side of the vehicle is prevented, said guide rail being of such height that it does not extend substantially above the rim of a normally inflated vehicle tyre but is not so low that the wheel can readily ride over it. At the vehicle entry end 8 of the parking area the guide rail is inclined towards the wall. <IMAGE>