baber/WOPTO huggingface dataset:
Patent GB-2058953-A (GB)
Title: A magnetic fluid bearing
IPC: F16C33/82
Filed: 1980-07-24
Abstract: A bearing is disclosed having a bearing member (10), with a cylindrical bore (20), and a shaft (12) in the bore, a magnetic fluid (14) being between the shaft and the bore walls. In order to retain the magnetic fluid in a simple manner, the member (10) is a permanent magnet which is magnetized with its internal magnetization radially directed relative to the axis of the bore. The shaft (12) may be of, or be covered with, ferro-magnetic material. The member (10) can conveniently be made in segments each of which is magnetized radially of the bore. <IMAGE>
Patent GB-2058735-A (GB)
Title: Solid electrolytic capacitors
IPC: H01G9/04
Filed: 1980-09-16
Abstract: The dielectric oxide layer e.g. of manganese dioxide of a dry electrolytic capacitor anode is produced by inductive heating of the anode whilst immersed in a solution of the corresponding metal salt e.g. manganese nitrate to effect thermal decomposition on the anode surface.
Patent GB-2059267-A (GB)
Title: Compound material for prosthetic devices
IPC: A61L27/00
Filed: 1980-09-23
Abstract: A compound material, suitable for making prosthetic devices, comprises at least one layer of metal wire mesh on a metal substrate. The wires are joined to each other and to the substrate by means of metallurgic bonds at their point of contact. These metallurgic bonds may be formed by any method but preferably by pressure-sintering, sometimes preceded by a pre-compacting step. Sintering temperatures between 600 DEG C and 1000 DEG C, at pressures between 1 and 150 MPa and durations between 5 minutes and 8 hours have given good results. The pre-compacting step may be effected at pressures of 10-600 MPa. <IMAGE>
Patent GB-2062190-A (GB)
Title: Sealing bellows
IPC: B29C57/00
Filed: 1980-10-02
Abstract: In a method of producing a sealing bellows (10) for a vehicle's gear lever or hand brake, two portions of a laminated material which is resilient in a preferred direction and which has a layer of thermoplastic synthetic material are arranged with the thermoplastic layers facing each other. They are bonded together along predetermined portions of peripheral lines of similarly shaped parts (11 and 12) of the bellows 10 in such a manner that those parts are resilient transversely of the main direction in which the bellows (10) extend. The two parts (11 and 12) are solidly connected, at one end of the bellows (10) intended to be positioned adjacent to an opening which is sealed by the bellows (10), by a frame (14) on which retaining means are provided. Apparatus for bonding and for punching out the portions from webs of the material are described. <IMAGE>
Patent GB-2065217-A (GB)
Title: Axial tumbler barrel lock
IPC: E05B49/00
Filed: 1980-12-03
Abstract: In an axial tumbler barrel lock, the fixed part 8 and the rotatable part 6 which have matching bores to receive the tumbler pins 13, are axially spaced by washers 14 carried on the pins. The key is inserted at 19 and rotation may act directly or through an optical sensing system 36, 37, 21, to move a bolt. <IMAGE>
Patent GB-2091976-A (GB)
Title: Electricity supply signalling
IPC: H04B3/56
Filed: 1980-12-12
Abstract: A method of and apparatus for supplying an alternating signal to an electricity supply system wherein the neutral tapping on the supply transformer (T) is connected to earth and alternating signals are induced in the live (L) and neutral (N) conductors of the system by means of a magnetic circuit (M) which encompasses the live and neutral conductors between the supply transformer and the load, the alternating signal being generated by a generator (G) and supplied to a winding (W) on the circuit; the signals cancel one another and are indetectable in the electrical circuit comprising the live and neutral conductors and the load but are detectable by capacitive means between the live or the neutral conductor and earth. The method is also applicable to three-phase supply systems (Fig. 3 not shown). <IMAGE>
Patent GB-2069280-A (GB)
Title: Process of testing for a sound control system
IPC: G10K11/178
Filed: 1981-01-05
Abstract: In active sound control systems, sounds are generated to cancel noise, and correct sound generation is achieved by generating signals representative of the noise, passing the signals through a filter and generating sounds from the filter output. Difficulty occurs in determining the characteristic for the filter but the process of the invention provides an effective method. A computer 21 is used to provide signals for a loudspeaker N positioned in the path of noise to be cancelled. Signals are recorded by the computer 21 which are representative of noise received at microphones d and p. The noise received is then regenerated by a speaker S and signals representing the noise received at the microphones d and p are again recorded. The various signals recorded provide the values of parameters in an expression identifying the required filter, and if the filter is a digital filter its coefficients can be derived from the recorded signals. <IMAGE>
Patent GB-2091775-A (GB)
Title: Building block
IPC: E04B2/08
Filed: 1981-01-27
Abstract: A rectangular elongate building block has on one face 6 a longitudinally extending groove 6a, and on the opposite face 7 a corresponding tongue, having two parts 7a and 7b separated by a gap 8 approximately equal to the width of the block. A side recess 4a for mortar may be provided. <IMAGE>
Patent GB-2071578-A (GB)
Title: Keyboards and methods of operating keyboards
IPC: G06F3/023
Filed: 1981-02-05
Abstract: A one-handed keyboard for signifying letters of an alphabet comprises a base 21 and keys 22 operable by human digits. Letter keys 23 are arranged in three columns I, II and III, intended for use by the index, middle and ring fingers respectively, and separated by raised barriers 25. Thumb keys and little finger keys 24 are provided on either side for various control functions. Operation of the device is such that no more than one at a time of the principal letter keys in the three columns is required when signifying any letter of the alphabet. The configuration of the keys takes into account the difference in length between the longest finger and the other two strongest fingers to give a comfortable rest position. The base and/or at least some of the keys is or are contoured to facilitate at least partial operation by substantially planar movement of the fingers by movement substantially in or parallel to the plane of the keyboard. This is effected by the barriers 25 and by contoured, inclined portions 26 of the keys 23. In other embodiments the whole keyboard may be rocked on switches to select different modes giving different letter outputs from the letter keys. <IMAGE>
Patent GB-2082617-A (GB)
Title: X-ray image converters utilizing rare earth phosphor mixtures
IPC: C09K11/86
Filed: 1981-03-17
Abstract: In an X-ray screen comprising a transparent support with a photographic film on each side, each film has a coating of a phosphor mixture comprising polyhedral Gd2O2S:Tb of average size 6 to 20  mu and plate-like LnOX:Tm of average size 2 to 12  mu wherein Ln = La or Gd,X = Cl or Br and Tm is present from 0.05 to 1 mole %. The mixture gives improved resolution and reduces the problem of light crossing over the transparent support. According to whether blue sensitive or green sensitive film is used, the ratio of phosphors is varied. U.V. absorbing and light reflecting layers may be incorporated in the structure.
Patent GB-2075165-A (GB)
Title: Open-topped refrigerated display cases
IPC: F25D21/12
Filed: 1981-03-25
Abstract: A refrigerated display case has two interior display spaces separated by a partition wall (12). Encircling each of the interior display spaces is an associated refrigeration air conduit (18, 20). Each of the refrigeration air conduits has an inlet and outlet opening (26, 30, 40, 42) positioned so as to direct cold air across the corresponding access opening for the interior display space (Fig. 1, not shown). The portions of the refrigeration air conduits that extend through the partition wall can be joined so as to form a single chamber. The evaporator coils (22, 24) can be located either along each of the refrigeration air conduits or in the central chamber within the partition wall. The display cases are defrosted by an ambient air defrost system in which ambient air is drawn into and circulated through the refrigeration air conduits for defrosting any frost buildup within such conduits. <IMAGE>
Patent GB-2080449-A (GB)
Title: Torque limiting clutch
IPC: F16D43/206
Filed: 1981-07-23
Abstract: An overload clutch comprising a driving part (15) and a driven part (20) releasably interconnected in torque transmitting relationship by balls (25) held in a cage (28) in engagement with torque transmitting recesses (29, 30) of the parts (15, 20), and which can be disengaged by relative rotation between the driving and driven parts (15, 20) when the torque transmitted in either direction exceeds a predetermined value, and in which spacers (34) are moved by the cage (28) into spacing relationship with the parts (15, 20) to maintain the balls (25) out of engagement with the recesses (20, 30) after disengagement of the clutch, and wherein the clutch can be re-engaged by relative rotation between the parts (15, 20) in the reverse direction to that which caused disengagement by the provision of two pairs of inter-engageable abutments (51, 52; 58, 59), and a first control means (62a, 62b) to prevent inter-engagement of one pair of the abutments as a result of relative rotation when the clutch is disengaged and to permit of inter- engagement of the abutments of the other pair on resetting by relative rotation in the reverse direction, and second control means (60, 61) to maintain the abutments of both pairs out of inter-engagement during the initial stages of disengagement of the clutch. <IMAGE>
Patent GB-2103699-A (GB)
Title: Vanity case
Inventor: SHIOI YUJI
IPC: B65D45/18
Filed: 1981-08-14
Abstract: A vanity case, such as a compact case, comprises a receptacle member (1) and a hinged cover member (2) arranged to be latched with each other by snap action. A recess (8) is formed in one of the members in which a slider element (13) having an enlarged outer end (16) and ramp surface 17 is provided. When the slider element (13) is pushed inwardly, the ramp exerts such a lifting force as to separate the lid from the receptacle so releasing the latching therebetween. The slider element (13) is urged forwardly by a spring member (20) provided in the recess (8). <IMAGE>
Patent GB-2082676-A (GB)
Title: Two-stroke crankcase compression engine with adjustable transfer and exhaust valve timing
IPC: F01L1/38
Filed: 1981-08-21
Abstract: The timing of the valve 10 controlling charge transfer from the crankcase to the cylinder and of the exhaust valve 11 is adjustable to maintain the engine power output with changing altitude. The piston controls a crankcase inlet port 7 and cylinder exhaust ports (14'), Fig. 4 (not shown). Mechanisms for valve timing adjustment are described, Figs. 6 and 7 (not shown). <IMAGE>
Patent GB-2081827-A (GB)
Title: Game devices; mechanism for resisting rotation
IPC: G07F17/34
Filed: 1981-01-26
Abstract: An amusement or game device of the type which has one or more indicia- bearing rotatable reels which are rotated in response to pulling of a handle is disclosed (see also GB-A 2,069,657) but the present application particularly concerns a mechanism 380 for providing slight resistance to movement of at least one notched disc 34 attached to a said reel subsequently of enablement of the game device and immediately before pulling of the handle: the mechanism 380 comprises an elongated spring member 392 attached to a mounting bracket 384 and having a curved portion 394 providing an edge surface 398. The member 392 normally engages the disc 34 to resist rotation but upon rapid rotation of the disc 34 caused by pulling of the handle, the member 392 is propelled outwardly where it is held in a retracted position by an electrical coil 386. <IMAGE>
Patent GB-2109158-A (GB)
Title: Improvements in and relating to solid state switches
Inventor: EDGE GORDON MALCOLM
IPC: H01L45/00
Filed: 1981-10-26
Abstract: An electrical switch uses a chalcogenide glass or film or layer of vanadium oxide or combination of vanadium oxides and has electric current establishing means such as conductive elements N,M on opposed faces of a block of the material, or an electron beam for inducing an electric current in a local region of the material. A voltage applied to selected elements N,M, or an electron beam applied to a crossover point of elements N,M, causes a change in conductance of about 10<4> so that a current can flow. The change is said to occur at 56-70 DEG C. <IMAGE>
Patent GB-2085738-A (GB)
Title: Magnetic word game
IPC: A63F9/06
Filed: 1981-10-26
Abstract: A board game comprises a steel board with sections for magnetic letters, for writing, for the formation of words with the letters and for use as a scoreboard. Magnetic goal markers, a pointer and a whistle are also provided. A storage box is provided at the base of the board. <IMAGE>
Patent GB-2109486-A (GB)
Title: Gear shift means
Inventor: BURKE JOHN PIUS
IPC: F16H63/30
Filed: 1981-11-10
Abstract: A gear wheel (15) is mounted for rotation on a shaft (11) journalled in a housing (14). One end of the shaft constitutes a piston responsive to fluid pressure in a duct (23) to shift the shaft axially and bring the gear wheel (15) into driving engagement with two other wheels (21, 22). A coil spring 19 urges the gear wheel (15) out of engagement. <IMAGE>
Patent GB-2109754-A (GB)
Title: Mounting bicycle saddles
Inventor: SALIM-KHAN MOHAMMAD
IPC: B62K19/36
Filed: 1981-11-23
Abstract: An arrangement is provided whereby the rider, while continuing to sit on the saddle, is able to lower the saddle by his weight after operating a catch means connected to a suitably placed lever. This catch means may be operated mechanically, hydraulically, electrically or pneumatically. The lowering of the saddle enables the rider to firmly rest both his feet on the ground on each side of the bicycle without dismounting. In order to move off he reduces his weight on the saddle by raising his body, thus enabling the saddle to resume its riding height by the upward thrust of the biasing means which may be pneumatic or mechanical e.g. a coil spring. The saddle is clicked into its rigid riding position by the return of the catch.
Patent GB-2116332-A (GB)
Title: Control circuit
Inventor: SPENCE DEREK
IPC: B01D1/00
Filed: 1982-02-26
Abstract: A control circuit for an evaporator suitable for use in a wool scouring line comprises a pressure sensor (36) communicating with the discharge pipe (24) of the evaporator (10) between the discharge outlet (22) and the discharge pump (26) and means (42) responsive to a signal from a pressure sensor capable of feeding rinsing water into the evaporator and/or discontinuing heat input to the evaporator. <IMAGE>
Patent GB-2116887-A (GB)
Title: Cooling foundry castings
Inventor: LITTLE SIDNEY DEVEREUX
IPC: B22D30/00
Filed: 1982-03-20
Abstract: A method of cooling a casting comprises the steps of placing the casting in a fluidised bed of particulate material, at a temperature lower than that of the casting so as to cool the casting by heat transfer from the casting to the material of the bed.
Patent GB-2119687-A (GB)
Title: Method of and apparatus for orbital welding
Inventor: BLAKE MARTIN
IPC: B23K9/028
Filed: 1982-04-28
Abstract: A problem that occurs when welding pipes (1, 2) is weld sag. The present invention overcomes the problem by providing a pressure of inert gas at a preselected value in the pipes, the pressure being below atmospheric, e.g. between 3 o'clock and 9 o'clock. A needle valve 9 controls exhaust conductance through the pipes to control pressure in accordance with a time cycle. <IMAGE>
Patent GB-2101293-A (GB)
Title: Cooling system for IC engines
Inventor: BERNHAGE ROLF
IPC: F01P7/16
Filed: 1982-05-07
Abstract: A process and cooling system are described for regulating the temperature in a water cooling system for a compressor-charged I.C. engine with an air intercooler (9) for a charge of air. The regulation is carried out by the aid of three temperature regulators (T1, T2 and T3) so interconnected with by-pass pipes (7, 11 and 16) that the charge of air of the engine is automatically preheated when the engine is idling and intensely cooled when the load on the engine is high. The adaptation of the cooling system to a multiple engine arrangement is also described. <IMAGE>
Patent GB-2099047-A (GB)
Title: Drill pipe sections
IPC: E21B47/12
Filed: 1982-05-14
Abstract: A drill pipe section (1) enables electrical information signals to be transmitted along a borehole to feed information generated by instruments situated adjacent to the drilling bit along the drill string to monitoring and/or indication equipment situated adjacent to the drilling machine. The section comprises a generally cylindrical housing member (2) and a liner member (5) fixedly mounted inside the housing member with an air gap (9) defined between the two members. An electrically conductive element (12) extends between the electrically conductive, annular coupling components (13 and 14) one of which defines a radially inwardly directed coupling margin and the other of which defines a radially outwardly directed coupling margin.   <IMAGE>
Patent GB-2120173-A (GB)
Title: Tracing and sketching outfit
Inventor: XUEREB EDGAR
IPC: B43L13/16
Filed: 1982-05-20
Abstract: A tracing and sketching outfit comprises a sheet of hard solid clear transparent material, an overlying clear transparent drawing sheet, and a moveable fixable bar 24 containing a sighthole 26, said sheet and said bar held firmly together at a distance from and parallel to each other by a rod 30. The user of this outfit selects a view by looking through the sighthole, and using an appropriate felt pen or such like sketches the view as seen on a clear transparent drawing sheet placed on the hard solid transparent sheet lying between the selected view and the sighthole. <IMAGE>
Patent GB-2106120-A (GB)
Title: Polymer moulding composition
Inventor: QUINN RICHARD JAMES
IPC: C08L51/00
Filed: 1982-05-21
Abstract: A molding composition comprises a major portion of a resinous polymeric phase and a minor portion of a rubbery phase prepared by forming a mixture of two rubbery phases each of which is prepared from a rubber and one or more compatible monomers which are grafted thereon, one of the rubber phases having a rubber-to-monomer ratio of at least 2.5:1 by weight and the other a rubber-to-monomer ratio of 2.0:1, the first mentioned rubber phase being present in excess of the other and being prepared in the presence of the other. Molding compositions comprising blends of methylmethacrylate and styrene copolymers, as the resinous polymeric phase, and polybutadiene grafted with methylmethacrylate and styrene, as the rubbery phase, represent a preferred embodiment of the molding composition.
Patent GB-2100835-A (GB)
Title: Non-metallic leaf spring
Inventor: EPEL JOSEPH NORMAN
IPC: F16F1/18
Filed: 1982-06-08
Abstract: A non-metallic leaf spring (10) comprises a unitary elongate member (12) having a matrix of polymerised resin and a plurality of fibres distributed uniformly in the matrix so as to extend along the elongate member, means (14) at each end of the elongate member for connection to one structure to be supported by the spring and a mounting assembly (18) between the ends of the elongate member for connection to another structure to be supported by the spring. <IMAGE>
Patent GB-2110016-A (GB)
Title: Detector for electric earth- leakage currents, and method of detecting such currents
Inventor: BARTLE ERNEST CAMPBELL
IPC: H02H3/33
Filed: 1982-06-17
Abstract: Earth-leakage current in an electric installation or equipment is detected in a fail-safe manner using a core balance transformer CB with its detector coil tuned by a capacitor CI to form a resonant circuit. An amplifier ICIa provides positive feedback to generate resonant oscillations, and a window detector 4 is responsive to alternating current in the resonant circuit and provides an output signal only when the amplitude of such current is above a predetermined threshold level but below a predetermined trip level. The circuit is normally tuned to a frequency different from mains frequency (say 40 Hz) and the oscillation amplitude is small compared with the signal induced in the detector coil of the core balance transformer by a fault of the magnitude required to be detected. When protecting a polyphase line, lock-out facilities, to prevent re-energisation so long as the fault exists, may be provided by coupling an artificial neutral point to the input of detector 4. The impedance of the earth leakage path will then prevent the detector from proving an output. <IMAGE>
Patent GB-2126930-A (GB)
Title: Cleaning metal stampings
Inventor: CORBETT SYDNEY CHARLES
IPC: C23G1/00
Filed: 1982-07-08
Abstract: A method of, and apparatus for cleaning and treating articles, particularly applicable to the cleaning and treatment of brass stampings to remove contaminates such as grease and graphite therefrom comprises the steps of subjecting said articles to a washing treatment in washing apparatus and subsequently subjecting the articles 41 to a blasting process in a blast cleaning machine in which the articles are subjected to abrasive particles projected at high speed from an impeller 57 while tumbled on a moving bed in the form of a perforated rubber belt 42 driven over sprockets 43, 44. <IMAGE>
Patent GB-2103465-A (GB)
Title: Pie-making apparatus
Inventor: TAYLOR JOHN WINSTON
IPC: A21C11/00
Filed: 1982-07-19
Abstract: Conveying means is provided in the form of a multiplicity of counter-rotating turntables (11 to 19) arranged in a sinuous path between an input (25) and an output (28). Each turntable has peripheral pockets (20) for locating containers and guides (27) pass the containers from one turntable to the next. Pastry (30) is fed by a conveyor (31) and hoppers (33) to containers in the pockets of one turntable (13). Formers (60) actuated by a cam (68) form the pastry into casings at the next turntable (14). Fillings (35) are added through hoppers (39) and then consolidated by plungers (160) at turntable (16) and pastry lids are formed from a sheet of pastry (79) and pressed onto the filled casings by formers (260) at turntable (18). <IMAGE>
Patent GB-2108950-A (GB)
Title: Tank aeration installation and operation
Inventor: BOHNKE BOTHO
IPC: C02F3/00
Filed: 1982-10-07
Abstract: A process for the operation of a tank aeration installation having two aeration tanks, an initial drip-feed unit and a final clarification tank is improved by having the drip-feed unit adapted as a high-load unit with a space load in the range 2 to 12 kg/BOD5/m<3>. day, preferably around 5 kg BOD5/m<3>. day, and is so operated. The sewage input from the high-load drip-feed unit so operated to the aeration tanks is increased to a rate at least 1.5 times greater than the rate applied to conventional tank aeration installations.
Patent GB-2128766-A (GB)
Title: Single-mode optical fibre attenuator
Inventor: HARDING ANDREW BAXTER
IPC: G02B26/02
Filed: 1982-10-16
Abstract: To make a single-mode optical fibre attenuator, the fibre is heated at the point at which the attenuator is needed, which causes the core material to diffuse into the cladding. Hence the attenuation to which light propagating in the fibre is subjected is increased. The amount of attenuation depends on the temperature and the time for which it is applied. This can be done when making a fusion splice by applying the heat for a period after the splice has been made. For large value attenuators, two or more closely-spaced attenuators are made by the above method. <IMAGE>