baber/WOPTO huggingface dataset:
Patent GB-2044243-A (GB)
Title: A method of fabricating a gas laser tube assembly
IPC: H01S3/03
Filed: 1980-02-28
Abstract: A laser tube assembly wherein the component portions of the assembly are held together and thereafter sealed using a glass frit suspended in a suitable vehicle. The prefabricated component portions of the laser tube assembly are held together by means of an appropriate fixture, glass frit first being applied at the appropriate junctions between the component portions. The fixtured assembly is then placed in an oven, the oven being brought up to a temperature that melts the glass frit and seals the component tube portions together. In internal mirror type lasers, wherein a metal end flange is joined to the ends of the glass laser envelope to form part of the overall laser tube assembly, the prefabricated metal end flange is positioned against each end of the glass laser envelope, glass frit being applied between one end of the flange and the ends of the glass envelope prior to the assembly being placed in the oven.
Patent GB-2075596-A (GB)
Title: Hydraulic brake actuators
IPC: F16D55/18
Filed: 1980-05-03
Abstract: A hydraulic brake actuator with first and second pistons (30 and 31) slidable in a single bore (27) in a housing (26), has an adjustable stop (34) for the first piston, and an inlet for hydraulic fluid to the bore between the pistons. The second piston (31) engages a brake-operating member (24). A handbrake operating rod may engage the second piston. <IMAGE>
Patent GB-2050739-A (GB)
Title: Transistor switching circuit
IPC: H03K17/00
Filed: 1980-05-19
Abstract: A driving circuit for a power transistor switch (21) in which a feedback transformer (32) between the collector path of the power transistor and that of the driver transistor is used to provide a current drive to the power transistor (via diode 35 and transistor 22) that is proportional to the load current, and in which a reverse current drive, also proportional to the load current is applied by way of a third winding (36) on the transformer and a zener diode (40) to the emitter-base circuit of the power transistor to decrease the switching-off time of that transistor, by removing stored charge. <IMAGE>
Patent GB-2052609-A (GB)
Title: Well deviation control tool and method of manufacture thereof
IPC: E21B7/10
Filed: 1980-06-06
Abstract: A tool is incorporated in a drill string in order to minimize the deviation of drill bits utilized in drilling well bore-holes at substantial depths. The tool (10) comprises a single section of thick-wall drill collar positioned in the drill string directly above the bit (11). The tool preferably is provided in a length similar to that of a conventional drill collar, for example, 30 feet and comprises upper and lower portions (12, 14) having circular cross sections and adapted to being disposed centrally of the borehole, and an offset middle portion (16) connected to the upper and lower portions by suitable bends (20, 22) with the middle portion having a reduced sectional modulus along the axis of the bends. The tool facilitates the drilling of straight boreholes by causing the segment of the drill string directly above the bit to rotate about the axis of the hole rather than about the axis of the drill string. A method for manufacturing the tool is disclosed. <IMAGE>
Patent GB-2053100-A (GB)
Title: Floating platform
IPC: B63B27/14
Filed: 1980-06-24
Abstract: The present invention relates to floating platforms suitable for use in the loading and unloading of Ro-Ro vessels. In particular the present invention provides a floating platform (1) having a substantially flat deck surface, mooring means (9), and at least one ramp (4) at one end (5) of said deck surface, said deck surface and said ramp (4) being shaped and arranged so as to define a substantially arcuate track extending from said ramp (4) to the other end of said deck surface, said other end being disposable, in use of the platform (1), adjacent the stern or bow of a Ro-Ro vessel (20) docked alongside a wharf (16) with the longitudinal axis of said arcuate track at said other end generally aligned with the longitudinal axis of the vessel and with the free end of the ramp (4) extending onto said wharf (16). <IMAGE>
Patent GB-2056691-A (GB)
Title: Differential electromagnetic flowmeters
IPC: G01F1/58
Filed: 1980-08-14
Abstract: A flowmeter head is in the form of side-by-side channels FC1, FC2 of non- magnetic, electrically insulating material with the channels of very similar size. Sufficient precision of channel size is attained by boring the channels or by using drawn tube of closely controlled size. A radial measuring electrode EC1, EC2 is provided in each channel, e.g. by drilling a fine hole in the channel wall and sealing a wire in. The electrode arrangement permits an applied magnetic flux to pass through first one channel, then the other. Earth electrodes EE11, EE12, EE21, EE22 are provided at the ends of each channel outside the flux path. An earth-loop free connection to a differential amplifier of a flowmeter apparatus is possible with the electrode configuration (Figure 3). The precision of the channel size improves common-mode accuracy and the earth-loop free connection reduces drift and noise. The flowmeter head may be used to control the mixing of two components (Figure 4). <IMAGE>
Patent GB-2053296-A (GB)
Title: Dispensers for Fasteners
IPC: B65C7/00
Filed: 1978-08-24
Abstract: Apparatus for dispensing fasteners from one assemblage of connected fasteners comprising a side member comprising a row of connected paddle members, a second side member comprising a row of connected end-bars, and filamentary cross-links. The dispensing apparatus or gun (100) has a slotted hollow needle (116), a notched wheel (112) for advancing a fastener to the needle and a cam for aligning the end-bar of the fastener with the bore of the needle. A plunger (130) is moved forwards by means of a trigger (146) to push the end-bar along the bore of the needle and through the material to be tagged. As shown in Figure 20, at the end of its travel around wheel (112) the end-bar (56) is transverse to the bore of the needle (116) and is then aligned with it by co-operation between reciprocating cam (126) and shaped projection (128). <IMAGE>
Patent GB-2061439-A (GB)
Title: Hexagon Socket Heat Bolt
IPC: F16B23/00
Filed: 1980-10-02
Abstract: A hexagon socket head bolt has a hexagon socket (12) which is defined by inwardly convex circular arcs with a radius R of curvature given by R=1 DIVIDED 12C(S<2>-6SC-3C<2>> [S: width across flats of a hexagon wrench key 14, B: width across flats of the hexagon socket, C: clearance (C=B-S)]. The periphery of the hexagon socket (12) is provided with tapered chamfers (16) formed of inwardly convex circular arcs with a radius R' of curvature given by R'<R. Moreover, the bottom of the hexagon socket (12) has an upwardly convex surface.   <IMAGE>
Patent GB-2069423-A (GB)
Title: Tyre anti-skid devices
IPC: B60C27/10
Filed: 1981-02-06
Abstract: A tyre anti-skid device comprises a lateral member 14 intended to lie against a side of a tyre and having first and second end portions 14a, 14b, and means for releasably connecting together the end portions 14a, 14b to secure the device to the tyre including a belt 56a which extends a member 52, by which it is secured to the end portion 14a, and around a slide bar 64 of a buckle member 62 to terminate in an end 56b, the member 62 having a hook 66 engageable in an aperture 68 in a lug 50 secured to the end portion 14b. When the hook 66 is engaged in aperture 68 pulling the belt end 56b generally circumferentially of the tyre causes tensioning of the member 14, but drawing the end 56b away from the tyre (arrow 80 Fig. 7) causes the buckle member 62 to pivot to release the hook 66 from the aperture 68 for removal of the device from the tyre. <IMAGE>
Patent GB-2070780-A (GB)
Title: Bimetal point raiser and point tester using it
IPC: G01R1/067
Filed: 1981-02-13
Abstract: An electrically controlled point raiser Figure 1A for a point testing apparatus comprises a bimetal 10 with two branches 12, 14, one, 12, connected to a fixed member and the other, 14, to a support to which the point 22 is fixed, electrical means 28, 30 being provided for controlling the heating of the bimetal and for bringing about the raising of the point. The point raiser 50, Figure 2 is used to equip a point tester, is provided with a vacuum enclosure 40, a test piece holder 42, a binocular magnifier 54 and a cryostat 62. <IMAGE>
Patent GB-2069361-A (GB)
Title: Mopping up oil
IPC: B32B5/26
Filed: 1981-02-13
Abstract: A method of removing oil from water or solid surfaces comprises contacting the oil with a pad consisting of a plurality of layers of polyolefin net joined together, until the oil is absorbed and thereafter removing the pad. The pad may comprise up to 36 layers of net alone or at least four layers of net sandwiching a layer of polyester fibre. Layers may be joined by quilting.
Patent GB-2072013-A (GB)
Title: Louse-killing composition containing a pyrethroid
IPC: A61K31/23
Filed: 1981-02-20
Abstract: A louse-killing composition of synergistic effect, contains 0.1-0.5% of photostable pyrethroid, preferably permethrin, dekamethrin and/or Fenvalerat, 0.2-10% vegetable oil(s) and/or 0.6- 60.0% cationic or non-ionic detergent(s) as synergising substances and 25-80% lower alkanol(s) as solvent, with, optionally 13-40% distilled water. An odouring substance fragrance may also be added.
Patent GB-2094208-A (GB)
Title: Improvements in or relating to a shearing machine
IPC: B23D19/04
Filed: 1981-03-05
Abstract: A shearing machine for shearing sheet material, comprises a body (1) and two co-operating shearing wheels (5, 6) between whose shearing edges (41,42) the sheet is cut, wheel 5 being driven and having a toothed shearing edge. The stand (1) comprises a first part (2) and a second part (3), which are laterally offset from one another, and an intermediate horizontal connecting part (4). The shearing wheels (5, 6) are axially offset from one another and have their shearing edges (41, 42) in tangential contact with one another. The intermediate horizontal stand part (4) forms a wedge-shaped deflector and has its leading edge (27) disposed in line with and at a distance from the nip (28) between the shearing wheels (5, 6). The shearing machine is free from structural elements on either side of the shearing wheels (5, 6) at the level of the nip 28, thus enabling sheet of any width to be cut and curved cuts to be made. <IMAGE>
Patent GB-2089518-A (GB)
Title: Weighing scale with printer
IPC: G01G23/42
Filed: 1981-03-10
Abstract: A price-computing weighing scale has a platform 10 and a main housing 14 and also incorporates a printer unit 16 located between the platform 10 and the main housing 14 so as to be removable as a unit whereby the scale can be supplied with or without a printing facility. Location of the printer unit 16 within the area beneath the platform 10 minimises the counter space occupied by the weighing scale and printer. <IMAGE>
Patent GB-2075088-A (GB)
Title: Well treating fluid
IPC: C08K3/34
Filed: 1980-09-24
Abstract: Shear thickening fluids which comprise a water-swellable material (clay), present in a sufficient concentration so as to be capable of forming a stiff paste upon interaction with the water used, and water wherein the clay and water are kept separated by an intervening hydrocarbon-surfactant composition. The intervening oil phase prevents the interaction between the water and the clay phases and results in a stable, nonreacting, pumpable composite until such time as the oil envelope is ruptured by application of a sufficiently high shear force. Upon such rupture, the materials interact rapidly forming a semi-rigid stiff paste. Various well-control problems, such as oil and gas with blowouts, can be controlled by use of the above described composite. The composite is pumped down the well pipe. Exiting the orifices of the drill bit or a nozzle supplies the shear force needed to rupture the oil envelope thereby permitting the interaction between the clay and the water resulting in the formation of a stiff paste which can stop or prevent unwanted flow in or near the wellbore.
Patent GB-2074871-A (GB)
Title: Urea Prills Having Surface Impregnation of Certain Thiolcarbamate Sulfoxides
IPC: A01N47/16
Filed: 1981-04-27
Abstract: A solid herbicidal composition comprising urea prills having impregnated into the surface thereof from 0.1 to 10.0 percent by weight of a thiolcarbamate sulfoxide of the formula   <IMAGE> wherein R is alkyl C2-C8, or benzyl; and R<1> and R<2> together with the nitrogen atom to which they are attached form piperidino, hexamethyleneimino, 2,5-dimethylpiperidino or 5-ethyl-2-methylpiperidino. The composition shows increased thermal stability of the sulfoxide and may be used directly as a herbicide.
Patent GB-2074624-A (GB)
Title: Making creped paper
IPC: D21F5/18
Filed: 1981-04-28
Abstract: A web (46) comprised primarily of cellulose fibers is formed in a forming zone on a dewatering/transfer fabric (42) and is carried to a first drying means (64) thereon, whereupon the web is sandwiched between the dewatering/transfer fabric (42) and a carrier fabric (60). The web is carried around the first drying means between the dewatering/transfer fabric (42) and the carrier fabric (60), with air passing therethrough in order to partially predry the paper web. The web is then carried to a Yankee dryer (72) where it is dried and creped (86). The dewatering/transfer fabric is returned to the forming zone. <IMAGE>
Patent GB-2084604-A (GB)
Title: Process for the preparation of malachite green oxalate
IPC: C09B11/00
Filed: 1981-09-24
Abstract: Malachite green oxalate is prepared by reacting malachite green dyestuff base and oxalic acid in the melt.
Patent GB-2089078-A (GB)
Title: An indication device
IPC: G08B25/01
Filed: 1981-10-14
Abstract: In, for example, a thread surveillance and monitoring system, signal transducers are coupled in series, and also in parallel, and each is provided with first circuitry which is operative, in response to the occurrence of a signal from the transducer, to generate a control signal which is fed to the immediately subsequent signal transducer in the series coupling, this transducer having, like the remainder, second circuitry for generating, in response to the control signal, a deviation in the transducer signal, and a further control signal which is fed to the immediately subsequent signal transducer in the series coupling, whereby there occurs, on the signal line providing the parallel connection, a transducer signal having a deviation for each one of the signal transducers between the transducer generating the transducer signal and one end of the signal line. These deviations are counted at a central location, to identify the activated transducer. <IMAGE>
Patent GB-2090465-A (GB)
Title: Production of P-N junctions by the electromigration method
IPC: H01L21/40
Filed: 1981-11-19
Abstract: Liquid metal inclusions (1) are migrated through semiconductor materials (2) by an electromigration process to produce P-N junctions (8). The electromigration process utilizes an electrical gradient driving force instead of the thermal gradient driving force of the Temperature Gradient Zone Melting process. The direction of motion for a given polarity of electric field depends on whether the work function of the metal is higher or lower than that of the semiconductor. <IMAGE>
Patent GB-2091893-A (GB)
Title: Colour copying
IPC: G03G15/01
Filed: 1981-12-07
Abstract: A colour original is conveyed successively over slits 2a, b and c which are illuminated by independent blue, green and red light sources respectively, at least the blue and green light sources (e.g. metal halide lamps) being capable of emitting light of a narrow wavelength band, and a photoconductive sheet is conveyed successively in the opposite direction through respective colour processing sections a, b and c, each including charging, exposing and developing stations 11-13, and a single fixing station 14. Each developing station 13 includes a sheet- supporting plate 23 and a developing electrode 22 having a developer applicator slit 28, the gap between plate 23 and electrode 22 (through which the photoconductive sheet passes) being 0.1 - 1mm. <IMAGE>
Patent GB-2091152-A (GB)
Title: Fastener-driving tool attachment
IPC: B25B21/00
Filed: 1982-01-19
Abstract: The attachment comprises a body with one end for acceptance in a power tool. The body has an abutment 28 which transfers axial force via a rigid spring 18, e.g. an O-ring, wave washer or coil spring, to an abutment of an external sleeve. The sleeve has a torque- limiting recess 48 of variable axial dimension biased to its longest position by the rigid spring 18. Under normal drive conditions, the rigid spring will maintain the torque-limiting recess at its maximum length position. For application of additional torque to a fastener head 38, an extraordinary axial load is applied which collapses the rigid spring and enables the operation to reengage a body polygonal bore 32 with the fastener head. The fastener- engaging surfaces presented by the tool could alternatively be in the form of a driver bit retained in the polygonal bore by set screw 14. <IMAGE>
Patent GB-2091861-A (GB)
Title: Flue terminal
IPC: F23L17/08
Filed: 1982-01-26
Abstract: A flue terminal has an air inlet (14) defined between surfaces (15,16) which establish laminar flow of air approaching the flue terminal at one side thereof upwardly adjacent to a peripheral wall 18 of the flue. <IMAGE>
Patent GB-2103777-A (GB)
Title: Lamp having a simulated flame
Inventor: CLUTTERHAM ROBERT JAMES
IPC: F21V23/04
Filed: 1982-01-30
Abstract: A lamp, especially an artificial candle, comprises a simulated flame (1), in which two or more electric lamp elements (3) are embedded in a translucent outer body (4), mounted for example on a base (2), shaped as the stem of a candle (10) and enclosing an electrical power source (11) and an electronic switch (9) for switching power between the lamp elements to vary their luminosities. A suitable switch comprises a pair of capacitor/resistor discharge circuits. <IMAGE>
Patent GB-2092295-A (GB)
Title: Heating Appliances
IPC: F24C7/00
Filed: 1982-02-03
Abstract: The body (10) of a heating appliance for heating a living space is made up from three cast ceramic body components, a base (12), a heater housing (14) and a fuel-effect basket (16). The three components stand one on top of another and are adhered together. The heater housing (14) accommodates an electric fan-heater unit. The body components are so formed and decorated as to provide an elegant electric fire. <IMAGE>
Patent GB-2094624-A (GB)
Title: Process for formulating a medicated animal feed premix
IPC: A23K20/195
Filed: 1982-03-10
Abstract: A process of formulating a medicated animal feed premix comprising a synthetic drug, carrier and binder, for the purpose of reducing carryover of the synthetic drug to subsequent lots of animal feed processed in the feed mill.
Patent GB-2097509-A (GB)
Title: A cylindrical sleeve for a pulley
IPC: F16H7/12
Filed: 1982-04-21
Abstract: A cylindrical sleeve (10) for a pulley has a radially inwardly extending integral tab (14) at one end, the tap having an aperture (15). An aperture (16) is defined at the other end of the sleeve (10). The two apertures (15, 16) are aligned and form an eccentric bore. The aperture (15) in the tab (14) is smaller than the aperture (16) at the other end of the sleeve (10). In the production of the sleeve (10), the tab (14) is bent to extend radially inwardly and the aperture (15) in the tab is produced by using a punch guided by the aperture (16) at the other end of the sleeve so that the apertures (15, 16) are exactly aligned. <IMAGE>
Patent GB-2184236-A (GB)
Title: Surveillance sonar for torpedo detection and guidance
Inventor: GLASGOW JOHN ARTHUR
IPC: G01S15/42
Filed: 1982-07-26
Abstract: The sonar transmits frequency swept pulses each of which has a portion of relatively narrow bandwidth and relatively short duration. On reception the pulses, after being digitised at 6 are stored at 6A. The relatively short, narrow- bandwidth, portions of the received pulses are used in a processor 10 to identify "cells" having dimensions of range and velocity, in which a target, or features in which a target may be hidden, exists or exist. The output from the first processor 10 is used to feed only those parts of the stored information which relate to the identified cells from the store 6 to a second processor 18. Here the whole of the received pulses are processed to scrutinise the aforementioned cells for a target of interest. The invention is equally applicable to the processing of information concerning other variables of a target such as range and direction. The invention is also applicable to radar systems. <IMAGE>
Patent GB-2106588-A (GB)
Title: Gate structures
Inventor: WARREN NORMAN
IPC: E05F15/12
Filed: 1982-08-03
Abstract: A gate structure has a gate 14, hinged about a horizontal axis 15, within a gateway 10 (Fig. 2) and the gate is positively and controllably moved between closed and open positions by links 16 connected to each side of the gate, which links are driven by endless chains 17 and are provided with rollers 18 cooperating with tracks 19 to ensure smooth rectilinear movement of the links. The endless chains 17 are driven by a motor 20 through line shafting 21 and gearing 22. <IMAGE>
Patent GB-2129785-A (GB)
Title: Plant growing media
Inventor: COOKE ALLAN
IPC: C05G3/00
Filed: 1982-08-21
Abstract: A growing medium comprises a mass of particulate growing material and a minor proportion of a synthetic polymeric substance which can absorb a volume of water greater than its own volume such that said absorbed water is freely available for transfer to a plant growing in the medium, said medium incorporating a water soluble plant nutrient mix derived from seaweed and digested organic waste. The polymeric substance may comprise a cross-linked acrylamide.
Patent GB-2109176-A (GB)
Title: Printed circuit board edge connector
Inventor: CRINSON ANDREW LEE
IPC: H01R12/50
Filed: 1982-10-14
Abstract: A printed circuit board edge connector (15) includes an electrically insulating body (16) having front and rear faces (17,18) and first and second spaced and parallel rows of passages (21) extending through said body from said front face to said rear face. The passages (21) extend parallel to one another and a respective printed circuit board edge connection terminal (24) is received in each of said passages. There are first and second spaced and parallel channels (22, 23) in said front face of the body, said first and second channels intersecting respectively, said passages of said first and second rows to permit insertion of edges of respective first and second parallel printed circuit boards (12,13) such that the terminals (24) in the passages engage terminal regions adjacent the edges of the printed circuit boards. <IMAGE>
Patent GB-2111889-A (GB)
Title: A method of increasing the reliability of creep loaded components in particular turbine blades
Inventor: WORTMANN JURGEN
IPC: C22F3/00
Filed: 1982-11-15
Abstract: The reliability of a set of components, e.g. turbine blades or pipe bends, is increased by subjecting the components already creep-loaded to a hot isostatic pressing. Preferably, creep pores and cracks are closed by the hot isostatic pressing. The dissociation behaviour of alloy elements may be altered by the hot isostatic pressing with respect to homogenization and refinement of deposits. In a particular embodiment, a coating is broken by the hot isostatic pressing where outer base metal cracks are not closed in order to locate cracks for the purpose of component rejection.