baber/WOPTO huggingface dataset:
Patent GB-2045578-A (GB)
Title: Speaker device
IPC: H04R1/28
Filed: 1979-03-19
Abstract: A loud-speaker unit composes a box 1 housing a loud-speaker 2 and an air chamber 3 bounded by walls 4. The walls 4 of the air chamber 3 are made of elastic-porous material, e.g. foamed rubber-like plastics material, to minimise unwanted resonances of the unit. The walls 4 may be surrounded by a rigid housing 5. The loud-speaker unit can be used in household audio systems such as radio-sets and record players, as well as in special purpose acoustic systems, such as cinema and studio apparatus. <IMAGE>
Patent GB-2046531-A (GB)
Title: Damping electrical conductors
IPC: H02G7/12
Filed: 1979-04-05
Abstract: For damping mechanical oscillations of an electrical conductor 10, 11 in a power transmission system, where a conductor of mass m per unit length extends over a span of length l, a movable damping mass 19 with resilient restraining means 21 and a dashpot 16 are provided, the mass being a fraction P3 of the conductor mass in the span where P3 is between 0.004 and 0.200 for the fundamental mode of oscillation or is between 0.004 DIVIDED n and 0.200 DIVIDED n for the (n-1)th harmonic, the damper has a non-dimensional stiffness p1 determined from the expression p1 =   <IMAGE> where  omega  is the undamped natural frequency in radians per second, and c is   <IMAGE> where T is the tension, and the damping is determined from the non-dimensional damping p2 given by the expression p2 = 2Cd(p1)1 DIVIDED 2 where Cd is the fraction of critical damping associated with the natural frequency of the damper. The optimum values of p1 and p2 are tabulated. Even with variations of +/- 30% from these optimum values, a logarithmic decrement greater than 0.15 to 0.20 can be obtained for dampers of relatively modest mass located at or near the position of the antinode of the vibration to be damped. <IMAGE>
Patent GB-2022878-A (GB)
Title: Electronic watch with touch-sensitive keys
IPC: G04G21/08
Filed: 1979-04-06
Abstract: Touch sensitive key switches of an electronic watch which control functions of the watch such as time setting, are gated to reduce the power consumption of the watch. The key switches are capacitive and are fed signals derived from the time standard oscillator of the watch. A change in the key switch signals when the switches are touched by the user activate the time setting functions. Gates are provided coupling the signals derived from the oscillator to the key switches so that the signals are applied to the key switches either under control of the user or during repetitive time periods, reducing the time the signals are applied to the key switches and the power necessary to continuously supply such signals to the key switches.
Patent GB-2019534-A (GB)
Title: A Shut-Off Valve
IPC: F16K1/16
Filed: 1979-04-24
Abstract: A shut-off valve for a duct such as a ventilation duct comprises two separate blades (32, 34) secured on a supporting member (26) held by a pivot (12). Each blade (32, 34) is associated with a separate frame (40, 42) on which the relative blade bears in sealing-tight relationship when in the closed position. The frames (40, 42) are sealed to the duct walls and those parts of the frames which are adjacent the pivot axis (12) are interconnected by a wall (44). <IMAGE>
Patent GB-2024682-A (GB)
Title: Roll bending assembly for a rolling mill
IPC: B21B29/00
Filed: 1979-07-06
Abstract: The assembly is mounted to swing into and out of operative engagement with the outboard chocks of rolls on opposite sides of the passline to simplify roll changing or servicing. The assembly consists of a central double- acting piston and cylinder unit having piston rods extending in opposite directions and carrying locating blocks receivable in recesses in the outboard chocks. The unit is operated hydraulically to cause roll bending and can also be used to position the locating blocks prior to entry into the recesses of the outboard chocks. <IMAGE>
Patent GB-2032394-A (GB)
Title: Flip-top pack
IPC: B65D5/66
Filed: 1979-09-10
Abstract: A flip-top pack for cigarettes comprises a body with a collar 29 and a hinged lid 21, all made from a single blank. Such blanks are formed from a web by rectilinear severing cuts each common to two blanks, and the widths of collar side flaps 31, and of bottom and lid corner flaps 27 and 28 of the pack and lid are all reduced by formations such as edge beadings 36, 43 or 44 or corrugations or grooves or channel-like recesses or creping, without cutting away pieces of the blank. The said formations are preferably produced when the blank is cut from the web, for example with the use of combined cutting and embossing tools in a stamping machine. <IMAGE>
Patent GB-2031419-A (GB)
Title: Extraction of Organic Acids From Vegetable Matter
IPC: C07C51/487
Filed: 1979-09-13
Abstract: A method of extracting an organic acid, such as tartaric and/or malic acid, from vegetable matter, such as grapes, which contains an organic acid or a salt thereof. Juice expressed from the vegetable matter is filtered and has its pH adjusted firstly to 1.5 or less and then to a value greater than 7, for example, by adding calcium carbonate. An inorganic acid, such as sulphuric acid, is then added to the alkaline juice until its pH is again 1.5 or less. The acidic liquid is subsequently filtered, the filtrate being evaporated, if necessary, to yield the acid as a solid product. By-products of the method, such as gypsum, may be used for other purposes, such as the manufacture of cement.
Patent GB-2030347-A (GB)
Title: Nuclear Reactor Containment
IPC: G21C13/00
Filed: 1979-09-13
Abstract: A nuclear reactor installation is housed inside a spherical safety casing (2). The reactor is disposed in a pressure vessel (1) and a discharge duct (3) connects the interior of the safety casing (2) to a chamber (4). In the event of an accident causing a core meltdown, the molten reactor core can pass through the discharge duct (3) into the chamber (4). The duct (3) is lined with an anhydrous fire-proof lining (23) of refractory elements, while the chamber (4) is lined with a water-cooled steel jacket (41). The molten core material, after passing through the duct (3), will flow over a distribution core 42 lying on a bed (43) of anhydrous material e.g., basalt or asbestos, which absorbs the molten material. The bed (43) is mounted on a support (44) provided with radial expansion slots through which the molten material can flow. A second collar-shaped, water-cooled steel jacket (45) is provided. <IMAGE>
Patent GB-2038736-A (GB)
Title: Resilient suspension of cycle wheels
IPC: B62K25/24
Filed: 1980-01-09
Abstract: The driven wheel 46 of a cycle is mounted on a sub-frame 48, 52 which, in turn, is mounted on the main frame 10 of the cycle for pivotal movement about the axis of the pedal crank spindle, a leaf spring 50 acting between the sub-frame and main frame. The steerable wheel 22 of the cycle is mounted in a fork assembly 24 which is offset from the steering column shaft and is connected to the latter by a parallelogrammic linkage comprising upper and lower pairs of links 28, 30, the links of each pair being rigidly connected together by a crosspiece and one or more springs 36 being arranged to act diagonally across the parallelogram. <IMAGE>
Patent GB-2068848-A (GB)
Title: Horse-transporting vehicles with supplementary accomodation
IPC: B60P3/04
Filed: 1980-02-06
Abstract: The vehicle has a door 9 hingedly connected about its top edge to the body 3 and movable to an open position, there being at least two side screens connectable to edges of the door and extending between the door and the ground to provide temporary accommodation against the rear of the vehicle. Preferably, the vehicle is a horsebox and three side screens 17,19,21 are provided, one connected to each of three edges of the rear door, so as to provide part of a tent, a fourth wall of the tent being provided by the rear of the vehicle and a tent wall portion extending between the bottom of the rear of the vehicle and the ground. One or more compartments may be provided in the vehicle separated off from the accommodation within the vehicle for use as a tack store, cooling area and the like, the space above the compartments being accessible to the interior of the vehicle to provide a false Luton. <IMAGE>
Patent GB-2052559-A (GB)
Title: Electrode holder used in recovery of silver from photographic fixing baths
IPC: C25C7/00
Filed: 1980-02-18
Abstract: The holder has first and second electrode supports (12, 14) a hollow support member (16) therebetween, and has fluid passages (34, 36) to allow fluid for treatment to flow into the support member (16) to a container of material for providing the treatment. The remainder of the fluid flows through passages (30, 32) and outside the support member (16). The support provides improved flow through the electrolytic cell, is simple and cheap to construct, and is preferably combustible to provide no residue, aiding recovery of the silver. <IMAGE>
Patent GB-2077964-A (GB)
Title: Voltage regulation
IPC: G05F1/20
Filed: 1980-03-20
Abstract: In a voltage stabiliser of the type in which a transformer 11 (for example an autotransformer) with a plurality of taps 171, 172... 178 is zero-current switched between taps on variation in supply or output voltage, the zero current detector emits an output pulse signal the duration of which, after zero current, is short e.g. a few microseconds and substantially independent of the current level. Supply or output voltage, is detected at each peak and compared with a reference voltage to control the switching of triacs 181-188. The zero current is detected using oppositely poled diodes 24, 25 and two comparators. One produces a positive going pulse a short time (e.g. 1 microsecond) after the zero current, and the other a negative going pulse a short time later. The detector output pulse signal is formed by the summation of the outputs of the comparators. <IMAGE>
Patent GB-2048975-A (GB)
Title: Cable twisting machine with bobbin changing device
IPC: H01B13/02
Filed: 1980-04-23
Abstract: A cable twisting machine has a member 4 for supporting a bobbin 5. A door enables the bobbin to be rolled in and out of the machine. A bobbin changing device has a lifting frame 7 running on rails fixed to the stands 2, 3 with a minimum of three guide rollers for each stand. The frame 7 has a bobbin-carrying turn-table 8 with a fixed bobbin-abutting stop. A sleeve 9 mounted on turn-table 8, is engaged with and rotated by a turn pin 6 when the frame is lowered. A pneumatic, electromechanical or hydraulic drive moves the frame via a stranded wire. <IMAGE>
Patent GB-2052754-A (GB)
Title: Process and apparatus for the measurement of the concentration of odoriser in fuel gases
IPC: G01N27/28
Filed: 1980-04-25
Abstract: The invention concerns a process and apparatus for measurement of the concentration of odorizer in fuel gases, particularly the mercaptan content therein. The measurement is effected in a galvanic cell (1) having silver measuring and reference electrodes, (2, 4). The galvanic cell (1) is made from an electrolyte-permeable material and formed as a cylindrical absorber (3). The fuel gas under test is brought into contact with strongly alkaline electrolyte saturated with Ag2O (5), that expediently contains 0.2 N KOH and 40 vol.% of an alcohol as well as 1 to 3 weight % KNO3. The electrolyte is kept in forced circulation by the gas and the gas is continuously absorbed. The Ag<+> concentration decreases adjacent the measuring electrode (2) and a galvanic current arises between the measuring electrode (2) and the reference electrode (4) that is in contact with the Ag2O. This current at constant gas flow rate is proportional to the odoriser concentration and is measured by a temperature- compensated method. <IMAGE>
Patent GB-2050476-A (GB)
Title: Machine for Driving a Post into the Ground
IPC: E02D7/08
Filed: 1980-04-28
Abstract: A machine for driving fence and other posts 22 into the ground has an upright runway column 17 which preferably can be mounted on the conventional three-point linkage 10, 13 of a tractor vehicle 7, the runway column 17 holding and guiding a fence post 22 in substantially upright disposition while it is being driven, the driving being effected by a heavy weight dolly 26 which is vertically slidable in the runway column 17 so that in falling onto an emplaced post 22 it will drive it into the ground. To raise the dolly 26 in the runway a drive system, preferably operated by a power take-off 29 from a tractor vehicle gearbox 9, brings a pair of friction rollers 43 into engagement with the dolly 26, or a drive bar 27 on which it is mounted, so as to raise the dolly 26 relative to the column 17. These rollers 43 are also used for temporarily holding the dolly 26 at the top of the column 17 and then releasing it to fall on an emplaced post 22. <IMAGE>
Patent GB-2052693-A (GB)
Title: A Pellet for an Air, Gas or Spring Gun
IPC: F42B6/10
Filed: 1980-06-09
Abstract: A pellet having an at least partially hollow skirt portion (2) for slidably engaging a gun barrel bore surface via an outer surface of or on the skirt portion, and a core portion (1) located at least partially in the skirt portion hollow (2b). The outer surface and/or the skirt portion is made of an easily plastically deformable material such as lead, aluminium, copper or an alloy thereof, softer than the gun barrel bore surface. The core portion (1) is made of relatively hard to deform material such as steel, brass, for supporting and minimising deformation of the outer surface and/or skirt portion (2). Alternatively, the core may be made of the same material as the skirt but with a surround of relatively hard filler material. The core is in the form of an elongate member or one or more balls. The pellet may include a head portion (2a) made of metal, an alloy thereof or plastics with or without a metallic filler. The head, if present, or the core may be provided with an anaesthetising change and an apertured hypodermic needle tip. The core, in one embodiment, is adapted to be ejected from the rear of the pellet by wind or air pressure in order to enhance the range of the pellet. <IMAGE>
Patent GB-2092237-A (GB)
Title: Means for Converting Natural Fluid Energy into Electrical or Mechanical Energy
IPC: F03B17/06
Filed: 1980-10-16
Abstract: The converter comprises a wind or water-driven turbine with bulbs 2 directly coupled to the input shaft 3 of an electric generator 4. To enable the converter to be started at low wind or water speeds, the load imposed by the generator is adjusted by means of a load resistance which varies either progressively or in successive stages from the moment when the starting torque is reached up to maximum power. The load is supplied by means of a detector of the variation of the output voltage of the generator acting on an electronic or electromechanical power variation control means. <IMAGE>
Patent GB-2061783-A (GB)
Title: Electromagnetic stirring in continuous casting
IPC: B22D11/10
Filed: 1980-10-30
Abstract: In a method of stirring the non- solidified melt 6 in a cast strand 5 from a continuous casting machine, the strand 5 is formed in a mould 3 and the stirring is performed by means of at least one electromagnetic stirrer 7, which is suitably straight and provides an asymmetrical stirring effect. The flow of melt in or downstream of the mould 3 is measured by a measuring instrument 9, and the measuring signal thus obtained is employed for controlling the asymmetry of the stirrer in such a way that when a reduced flow of melt is measured, the asymmetry is increased, and vice versa. With Fig. 1). <IMAGE>
Patent GB-2062996-A (GB)
Title: Comparator circuit
IPC: G01R19/165
Filed: 1980-11-06
Abstract: A comparator circuit is proposed which has a current comparator connected as a current mirror (1). An additional current flow through the transistors (2, 3) of the current mirror (1) is generated through a switch (5) controlled by the output level for providing a switching hysteresis. A second additional unconnected current flow through the transistor (2, 3) of the current mirror (1) is generated for varying the hysteresis zone. <IMAGE>
Patent GB-2091596-A (GB)
Title: Apparatus for foam coating
IPC: B05B7/00
Filed: 1978-10-11
Abstract: Apparatus for coating a substrate comprises a heated pressure pot or tank (10) with pump feed (11) for forming a coating composition containing film-forming solids and a blowing agent, an orifice (15) for expanding the composition into a foam, and spray unit (13) for atomising the foam and conveying the foam towards the substrate for coating. <IMAGE>
Patent GB-2059835-A (GB)
Title: Continuous casting of steel
IPC: B22D11/12
Filed: 1980-03-20
Abstract: A method of and apparatus for continuously downwardly casting steel, in which molten steel (2) is poured into a continuous casting mould (3) and the still molten and/or solidifying steel is subjected after pouring to a helical electromagnetic force field. to obtain a stirring effect. Preferably said stirring is obtained by means of a plurality of electromagnetic coil assemblies (5) located about the steel strand path (4).
Patent GB-2065710-A (GB)
Title: Production of high density sintered bodies
IPC: C22C1/04
Filed: 1980-11-25
Abstract: Sintered bodies having density approaching the theoretical value are produced in a method which enables the amount of fine metal particles used to be minimised. The method comprises compacting a mixture of base metal particles (e.g. of Fe or Ti) having a median particle size greater than 40 microns and a minor amount of alloy-forming particles having a median particle size not exceeding 20 microns, so as to form a sinterable body of the desired configuration, and sintering the body at a temperature below that at which any liquid phase forms in the body.
Patent GB-2090492-A (GB)
Title: Apparatus for generating high frequency pulses
IPC: H03C1/30
Filed: 1980-12-31
Abstract: Apparatus for generating high frequency pulses, comprising a magnetron (2) having input terminals (154), and means (34,36) for applying a firing voltage across said terminals, said terminals being coupled (via 152,36,156,166) across a source (176 and 34) of bias voltage of a value lower than the voltage required to initiate oscillation of the magnetron. Capacitor (34) is discharged through transformer primary (148) by firing a FET (32). The discharge current through the magnetron (2) may be sensed by a circuit (180) which controls the charge stored in capacitor (34) to always fully drive the magnetron. Capacitor (34) is charged from a further pulse circuit (120) in dependence on a predetermined number of input pulses corresponding to the required charge. <IMAGE>
Patent GB-2067753-A (GB)
Title: Method of and apparatus for sorting particulate material
IPC: B07C5/342
Filed: 1981-01-22
Abstract: A mixture of particles are sorted by moving the particles in a desired trajectory, detecting one constituent of the mixture according to a particular characteristic of the constituent, for example fluorescence induced by exposing the particles to X-rays, and at a subsequent point diverting the constituent from the trajectory, the trajectory being a circular arc and being imposed on the particles by nestling them on the surface of a rotating perforated drum. <IMAGE>
Patent GB-2092697-A (GB)
Title: A Joint
IPC: F16B5/02
Filed: 1981-02-05
Abstract: A joint for a sheet and a structural element, wherein the structural element has an elongate profiled part. The joint includes a strip (3) having an elongate profiled part, shaped complementary to the profiled part of the structural element (2), and an attachment part. The sheet (1) is bonded to the attachment part, and the profiled part of the strip (3) is engageable with the profiled part of the structural element (2). The joint includes removable clamping means (4,5) for taking up forces which, in use, act in a direction tending to disengage the profiled parts. <IMAGE>
Patent GB-2085061-A (GB)
Title: Improvements in or relating to a device for suspending a glass
IPC: A47G23/02
Filed: 1981-03-09
Abstract: A clip or clamp having jaws as 3, 4 for gripping the edge portion of a plate, has a seating or arms 6,7 for supporting a stemmed glass or goblet from the plate. <IMAGE>
Patent GB-2072742-A (GB)
Title: Locking device
IPC: G07C9/00
Filed: 1979-06-05
Abstract: This invention relates to a locking device having a key a handle part 3 on which there are retained several information carrier parts 5 which are displaceable in relation to one another in a predetermined angle pattern and determine the locking code of the key, the device having a reading device 9 for reading off the locking code from the key and comparing the read locking code with a predetermined locking code. In the device information carrier parts are held for angular displacement about a common axis on the handle part, the reading device detecting the presence or absence of information elements in at least one part of the predetermined angle pattern positions. The carrier parts in the form of rings held for angular displacement by axial protuberances extending from said carrier parts into recesses provided in adjacent rings or in the handle part. <IMAGE>
Patent GB-2104305-A (GB)
Title: Improvements in or relating to the introduction of liquids into underwater cavities
Inventor: MILTON ALAN CHRISTOPHER
IPC: H01R13/523
Filed: 1981-05-20
Abstract: A desired liquid is substituted for water in an underwater cavity by carrying out one or more displacing operations in which the liquid present in the cavity is directly displaced by another liquid which is miscible therewith. The closed cavity may be part of an electrical connector comprising a first portion (1) having a casing (2) including a first electrical contact (6) and a second portion (21) having a casing (22) including a second electrical contact (27), the first and second portions being engageable together in a manner such that the casings cooperate together to define the cavity, which cavity envelopes the contacts. The arrangement of the connector may be such that when the portions are interengaged, they may occupy a first relative position in which the contacts are spaced apart and a second relative position in which the contacts are electrically connected together. The displacing liquids may be introduced into the cavity by means of a service pack comprising a plurality of containers and a means for sequentially delivering displacing liquid from each container to the cavity under the influence of gas pressure. <IMAGE>
Patent GB-2077313-A (GB)
Title: A method for stabilising the dimensions of a cloth
IPC: D06C7/00
Filed: 1981-05-21
Abstract: In a method for stabilising the dimensions of a cloth composed of or containing polyester fibres, the cloth is soaked with water with an amount critical for dehydration (typically 30% to 60% by weight), and is then steamed at a temperature between 120 DEG C and 150 DEG C for 30 to 120 seconds on a continuous basis, on being transported through a high pressure steamer. The interior of the steamer is maintained under conditions of saturated water vapour at the said temperature, so as to set the cloth with the wet heat, to prevent the shrinkage of the finished cloth.
Patent GB-2099577-A (GB)
Title: Equipment for testing molten metals and other high-temperature fluids
IPC: F27D21/00
Filed: 1981-06-03
Abstract: Temperature probe 19, slag breaker 20 and sampling head 21 are carried by respective rods 13, 14 and 15 which can be extended and retracted by pneumatic operating cylinders housed in protective tubes 8, 9 and 10. Each tube is swingable about a pivot 7 by a positioning cylinder 30 from a vertical parked position to an inclined operating position after which the carrying rod is extended to insert the test device into the bath. The operating cylinder may be a double cylinder. It is said that the rod of one cylinder is fixed to the upper end of the protective tube such that the cylinders slide within the tube. An enclosing housing 50, open at top and bottom, surrounds a frame 51 which supports pneumatic hoses. <IMAGE>