baber/WOPTO huggingface dataset:
Patent GB-2013287-A (GB)
Title: Seals
IPC: F16J3/02
Filed: 1979-02-07
Abstract: A flexible seal (2) comprises thickened inner and outer annular rims and a considerably thinner intermediate web integrally connected therewith. The seal has a pre- established configuration in which the rims are axially offset relative to each other so that the seal has a generally frusto-conical form. Curved section transition regions of comparable radial extent to the rims themselves blend into the rims and the web and provide a gradual change of section thickness therebetween. In one application the seal is mounted in a pump, being clamped by its rims between an axially reciprocating drive rod (22) and the pump housing (28). The seal is mounted under an initial radial compression such that in the operation of the pump its web is kept continuously in compression, or at most is subjected to tension in a small part of the reciprocating cycle. <IMAGE>
Patent GB-2017194-A (GB)
Title: Gasket Strip for Butt Joint Compression Seal
IPC: F16L9/22
Filed: 1979-03-22
Abstract: In order to form a tighter seal, especially at corner butt joints, between polygonal construction plate elements 1 which are pressed together at their edges with an intervening gasket strip, the strip 4 is provided at its critical sealing section with a second material 11 of greater elasticity than the main gasket material. A third material 12 which plastically deforms under pressure is partially embedded in the second material 11. The pressure of the second material when compressed forces the third material to flow into low seal pressure spaces and gaps of the seal to form a bonded seal with a seal pressure which is distributed by the deformation of the third material. Various configurations of the gasket cross-section and of corner segments are described. <IMAGE>
Patent GB-2019926-A (GB)
Title: A method and an arrangement for launching a submerged tunnel
IPC: E02D29/067
Filed: 1979-04-18
Abstract: The invention comes within the field of tunnels or closed section members for connecting two banks of an arm of the sea or of a river and relates more particularly to a technique for launching a submerged tunnel. According to the invention, a unit 1 is constructed in the dry and is wedged on an inclined plane 5, said unit is connected end to end with a previously constructed unit and the assembly thus formed is longitudinally moved by a distance corresponding substantially to the length of one unit and is thereby progressively submerged with the part of said assembly which is not yet submerged sliding on the inclined plane. Subsequent units are constructed and assembled to the existing structure and so on until the linear structure which is slightly curved is sufficiently long to interconnect the two banks. Application is to tunnels and also to aqueducts, oil pipelines and gas pipelines. <IMAGE>
Patent GB-2022629-A (GB)
Title: Selvage weft binding apparatus
IPC: D03D47/42
Filed: 1979-05-04
Abstract: A selvedge knitting needle N is reciprocated by a crank 26 and is guided by a guide 18 pivoted at the fell F-G so that, although the needle N moves through a curved path to engage the weft loops and/or a selvedge thread, the path coincides with the fell at beat-up to ensure firm selvedge. <IMAGE>
Patent GB-2023912-A (GB)
Title: Coaxial high-frequency cable
IPC: H01B11/18
Filed: 1979-05-30
Abstract: A coaxial high-frequency cable comprises a centre conductor 1, an outer conductor 2 insulating spacing disks 6, or a spiral (9, Figure 2 not shown) and plastics sheath 6, and is fixed mechanically by mounting elements which so engage the outside of the cable that the conductors cannot change in length with the changes in temperature. According to the invention, the spacing means is so constructed that any change in the dielectric constant of the cavitied dielectric (3) caused by a change with temperature in the density of the insulating material is equal and opposite to the change in the dielectric constant of the dielectric (3) caused by the change in volume of the insulating material. The insulating sheath 5 may be adjacent conductor 1 or 2 and the disk 6 may be replaced by radial webs (8, Figure 3 not shown) connected by segments (7). The cable has a constant mechanical and electrical length. <IMAGE>
Patent GB-2024625-A (GB)
Title: Method of protecting keratinous material from attack by insects that feed on keratin
IPC: D06M13/322
Filed: 1979-06-12
Abstract: A method of protecting keratinous material from attack by insects that feed on keratin and from feeding damage, which comprises treating the material to be protected with compounds of the formula   <IMAGE> wherein each of X1 and X2 independently represent methyl, fluorine, chlorine or bromine, each of X3 and X4 independently represents chlorine or bromine, R1 represents hydrogen, methyl or ethyl, R2 represents hydrogen, methyl, cyano, -C IDENTICAL CH or -CH=CH2, and each of Y1 and Y2 independently represents hydrogen, fluorine, chlorine, bromine, methyl or trifluoromethyl.
Patent GB-2024439-A (GB)
Title: Camera accessory shoe
IPC: G03B15/03
Filed: 1979-07-02
Abstract: An accessory shoe 2 for mounting a flashgun to a camera, comprises a stop 8 which obstructs the open end of the shoe. The foot of a flashgun can only be inserted into or removed from the shoe by first depressing the stop 8 against the action of a spring. <IMAGE>
Patent GB-2024582-A (GB)
Title: Soil working machine
IPC: A01B33/12
Filed: 1979-07-03
Abstract: A soil working machine comprises two groups of soil working members (24) disposed side by side, the working members (24) each being constituted by two working elements (23) axially spaced from one another on transverse driven shaft 7, and are in the form of a substantially closed circular disc when viewed along the axis of 7. Each group of members 24 is movable upwardly and downwardly about pins (4), Figure 2 (not shown). <IMAGE>
Patent GB-2037394-A (GB)
Title: Gearing
IPC: F16H55/14
Filed: 1979-07-11
Abstract: A gear drive comprises a gear wheel unit in mesh with another toothed component or gear unit 6, the gear wheel unit comprising two coaxial gear wheel members 8, 10 and a coupling between the two members, the coupling including a shaft 2 or tube 12, 24 acting as a torsion spring about the axis of the members, the spring being prestressed so that, within a range of torque transmitted by the gear drive, there is no backlash between the units. The coupling also includes two cooperating splined rings 14, 16; 20, 22 coaxial with the gear wheel members 8, 10, the rings having equal numbers of splines, that number being different from the number of teeth on each member. <IMAGE>
Patent GB-2054113-A (GB)
Title: Spark ignition electrode
IPC: F23Q3/00
Filed: 1979-07-18
Abstract: A spark ignition electrode device comprising a wire electrode 10, a hollow elongate ceramic insulator 11, and a shaped metal mounting member 13 in which the electrode is bent to form a holding portion 23 which is displaced bodily by a fraction of the electrode diameter so as to be non-co-axial with the rest of the electrode, said displacement being such that the holding portion is a non- rotatable press-in interference fit in a non-circular bore 30 of the insulator to secure together the electrode and the insulator without requiring the use of cement or separate mechanical fittings. A spark tip 20A is bent after the electrode has been inserted into the insulator. <IMAGE>
Patent GB-2035475-A (GB)
Title: Clutch-gear unit
IPC: E05F15/603
Filed: 1979-10-26
Abstract: A clutch gear unit has a combined slipping and disengaging clutch comprising a pair of coaxial rings (44,46 or 169, 170) disposed at least partly within a coaxial torque- transmitting wheel (58 or 168) of the unit. One of the rings (46, 169) is both a part of the slipping clutch and a part of the disengaging clutch. It is urged to a torque- transmitting engagement position with said wheel through an interposed friction linin (56 or 166) by means of compression springs (50, 202) that act between the pair of rings and it is held releasably in said engagement position by an eccentric (124 or 186) acting through an axial push element (108 or 188). The slipping torque of the slipping clutch is adjusted by adjusting the axial position of the other ring (44, 170) by varying the spring bias. A compact arrangement is obtained with particular application to such installations as power- operated gates, doors, shutters and valves of various types. <IMAGE>
Patent GB-2038446-A (GB)
Title: Vibration damper
IPC: B64C27/51
Filed: 1979-11-29
Abstract: A vibration damper comprises a mass of an elastomer damping material between two rigid members which may form parts of a helicopter rotor blade mounting device, wherein at least one of the said rigid members is constituted by an epoxy resin to which the elastomer is adhered.
Patent GB-2041516-A (GB)
Title: Methods and apparatus for measurement of reradiation in particle flow cell systems
IPC: G01N15/14
Filed: 1980-01-02
Abstract: Measurement of the energy and direction of radiation, typically scattered light, produced by particles passing through optical sensing zone 126 is improved in focusing of the scattered light and flexibility in the choice of focal length for positioning of photoresponsive de- vices 150-157. The improvement is obtained by collimating the collected scattered light entering deviating device 120 min , typically a prismatic fresnel lens, and then focusing with lens 121, the emerging separate, independent beams for measurement. Collimation can be obtained using optical elements including lens systems (119) or reflective systems, e.g. of parabolic form. <IMAGE>
Patent GB-2048276-A (GB)
Title: Fire-Retardant Polystyrenic Compositions
IPC: C08K5/19
Filed: 1980-02-11
Abstract: A self-extinguishing polystyrenic composition comprising a polystyrenic resin, a fire-retardant amount of a halogenated organic fire-retardant agent and a nitrogen-containing organic compound selected from amines, amides and ammonium compounds containing from 20 to 40 carbon atoms and their mixtures, the nitrogen-containing compound being used in an amount of from 0.5 to 50% based on the weight of fire-retardant agent.
Patent GB-2045165-A (GB)
Title: Magnetic document
IPC: G06K19/12
Filed: 1980-03-10
Abstract: A magnetic document comprises a support with a track of magnetizable material deposited thereon and capable of receiving and storing a message, the maximum magnetic moment per unit area of the track along a predetermined direction varying from one point to another in such a way that the magnetic configuration detected after removal of one longitudinal half of the track differs from the configuration detected from an entire track. <IMAGE>
Patent GB-2050841-A (GB)
Title: Enclosure apparatus, such as medical isolator
IPC: A61G10/00
Filed: 1980-04-22
Abstract: The invention relates to enclosure apparatus comprising a flexible enclosure envelope (9) in which human or animal patients may be kept in a positive or negative pressure environment isolated from the ambient environment, this environment being provided by blowing air, by means of blowing section (3), through a pipe (7) into the envelope (9) and exhausting it, with exhausting section (1), through a further pipe (5) into the atmosphere. A control device (10, 11) controls the state of a flow regulating device (12) in one of the pipes (7, 5) in response to changes in position of a flexible wall portion of the envelope, so as to tend to maintain a substantially constant air pressure inside the envelope. In order to keep the air pressure substantially constant even in the case of a large hole (for example) developing in the envelope wall, the position of the flexible wall portion changing by more than a predetermined amount is detected, for example by means of a microswitch (15), to cause a control valve (14) in pipe (7) (negative pressure environment) or pipe (5) (positive pressure environment) to close at least partially. <IMAGE>
Patent GB-2076048-A (GB)
Title: Impact-delivering tool
IPC: B25C1/08
Filed: 1980-05-13
Abstract: In the illustrated state of the tool, e.g. for driving nails, driver 12 is held about four-fifths of the distance towards its foremost position by sear 74. Fuel nozzle 30 and ports 28 are closed, as also is precompression chamber 44. Upon actuation of trigger 80, driver 12 is moved rearwardly by spring 55. As it moves, piston 38 uncovers supply port 30 and nozzle 31 sprays fuel into the precompression chamber 44 which also draws in air by way of port 24. Fuel/gas mixture already in the combustion chamber 46 is compressed and when piston 38 encounters crystal assembly 64 the latter initiates a spark at plug 56 to drive driver 12 to the left to impact a workpiece (such as a nail, not shown) and bring the ports back to the position shown, with fresh fuel/air mixture transferred from chamber 44 through ports 52, 50, 54 into the combustion chamber 46. <IMAGE>
Patent GB-2079650-A (GB)
Title: Shaping metal plate
IPC: B21D17/04
Filed: 1980-07-16
Abstract: A method and apparatus is provided for shaping metal plate to form a channel or groove along a non- rectilinear path, e.g. for a heat exchanger header tank. A pair of rollers 10, 11 is provided which have their axes 12, 13 of rotation inclined to one another. The rollers have cooperating surfaces shaped according to the shape of the channel required. The metal plate 15 is inserted between the rollers and the rollers are driven to feed the plate between the rollers. The plate is turned about an axis parallel to the axis of one of the rollers to cause the channel to be formed along a non-rectilinear path. The two groove walls may be formed in two successive passes, and each wall may be formed by a series of passes, the rolls being moved closer together (axis X) between passes. <IMAGE>
Patent GB-2080285-A (GB)
Title: Process for the Preparation of Cyclopropylmethyl-n-Propylamine
Filed: 1980-07-23
Abstract: A process for preparing cyclopropylmethyl-n-propylamine from the reaction of cyclopropylmethylamine with propionitrile is described. The reaction takes place in the presence of a hydrogenation catalyst, preferably a mixture of rhodium on carbon and platinum on carbon. The process is particularly useful as it consumes the cyclopropylmethylamine by-product from another scheme for the synthesis of cyclopropylmethyl-n-propylamine.
Patent GB-2055768-A (GB)
Title: Automatic sheet feeding system in printing apparatus
IPC: B41J13/28
Filed: 1980-07-25
Abstract: An automatic sheet feeding system of a printing apparatus comprising a rotatable platen (1), a printing head (3), a sheet ejecting stacker (7), and a sheet feeding stacker (6). The platen (1) remains stationary until the leading edge of a sheet fed by the sheet feeding roller (10) has abutted against a holding section formed by the platen (1) and pinch roller (2) whereby any skewed position of the sheet is corrected. Preferably, the platen is then rotated until the sheet reaches sensors (14a, 14b) for detecting the leading edge of a sheet adjacent the inlet of the sheet ejecting passage near the platen. When the sensor (14aand 14b) detects the leading edge of a sheet, the platen (1) is rotated in the reverse sense through a predetermined angle for setting the printing initiating position on a sheet at a predetermined distance from the leading edge of the sheet. Sheets may also be inserted manually to the holding section. <IMAGE>
Patent GB-2082565-A (GB)
Title: Vibrating cutter for optical fibres
IPC: G02B6/25
Filed: 1980-08-20
Abstract: Fibre 16 in groove 14 of anvil 12 is tensioned between clamps 18, 20 and scribed by cutter 30 to which minute high frequency vibrations are applied (e.g. by a piezo-electric transducer) until the fibre cleaves. <IMAGE>
Patent GB-2062354-A (GB)
Title: Electric accessory boxes and lugs therefor
IPC: H01H9/02
Filed: 1980-08-28
Abstract: Electric accessory boxes 1 have lugs 8 to receive screws for attaching covers thereto, the lugs 8 being snap- fitted into position and capable of giving play to facilitate attachment of the cover. The lugs have hooked legs 9, 12 which snap fit in apertures 7 in the box with the hooks 12 engaging under crossbars 6. The crossbar 6 or the hooks 12 may be resilient, hooks 12 being formed on the legs 9 by stamping or bending or may comprise separate parts attached to the legs 9. <IMAGE>
Patent GB-2060465-A (GB)
Title: Work Contacting Safety Device for a Tacker
IPC: B25C5/10
Filed: 1980-10-14
Abstract: A tacker which ejects staples from a magazine 2 on operation of a handle by means of a string biassed striker 8 has a portion of the striker protruding from the ejection slot. The tacker must first be pressed against the surface so that the protruding portion of the striker is pressed inwardly so that a pawl 17 formed on the operating handle 5 can then engage the striker. It is only then that the tacker can be operated. <IMAGE>
Patent GB-2086150-A (GB)
Title: Electrical terminals
IPC: H01R4/50
Filed: 1980-10-18
Abstract: A brass electrical terminal 1 for connection to an automobile ignition lead 13 comprises an end contacting plate 3 and side contacting members 5 and 7. Projecting substantially perpendicularly from the centre of the plate 3 is a spike 9 which may have a screw thread. In use, the spike 9 is inserted into the central conducting medium 15 of the lead 13, so that the plate 3 abuts the end of the lead. The side contacting members 5 and 7 are then manually bent into contact with the outer longitudinal surface of the lead. A spike 11 on the inner surface of the side contacting member 7 serves to retain the terminal 1 on the lead 13. <IMAGE>
Patent GB-2064109-A (GB)
Title: A Method of and Apparatus for Measuring the Concentration of Selected Components in Loose Materials
IPC: G01N23/10
Filed: 1980-11-20
Abstract: The measurement is performed by placing a sample of the material in cylindrical vessel 3, made of a material of a low attenuation coefficient, close to the attenuation coefficient of the sample. The axes of collimator source 1 and detector 2 (immovable in relation to each other) are perpendicular to the axis of the vessel and intersect preferably along the axis of said vessel. The detector and collimator move relative to the vessel such that the whole mass of the sample is penetrated by a narrow beam of X- or  gamma -radiation. The measuring vessel may perform, reversing composite rotary and axial motion repeated several times, or the collimator and the detector perform reversible axial motion repeated several times along the axis while the vessel simultaneously rotates, or the collimator and the detector perform reversing helical motion repeated several times in relation to the axis. <IMAGE>
Patent GB-2090167-A (GB)
Title: Coating car body seams
IPC: B05C1/02
Filed: 1980-12-29
Abstract: Side seams of car bodies are coated with a stripe using an applicator roll which applies coating material to the seam and a transfer roll 20 which applies coating material to the applicator roll. The transfer roll has a plurality of radial holes 27 extending from a cylindrical bore. The transfer roll rotates on a hollow stub axle which delivers coating material into the cylindrical bore of the transfer roll from whence it passes through the radial holes 27 for transfer to the applicator roll. The stub axle has an axle portion 25A off centre from a pivot portion 25B so that the engagement of transfer roll with the applicator roll is achieved by rotating the pivot portion in its mounting 6. The position of the applicator roll is adjustable in relation to the surface to be coated. <IMAGE>
Patent GB-2069640-A (GB)
Title: Improvements in hydraulic anti-skid braking systems for vehicles
IPC: B60T8/42
Filed: 1981-02-09
Abstract: In an anti-skid braking system a supply of operating fluid from a master cylinder (16) to a vehicle brake is modulated in accordance with skid signals from skid sensing means (6). To re-pressurise the brakes after a skid signal the system incorporates an hydraulic pump (3) of the double-acting type having a plunger (24) working in a bore (25) and a working chamber (30) which is in communication with a modulator assembly (2) adapted to control brake application following skid correction. <IMAGE>
Patent GB-2096833-A (GB)
Title: Combined antenna and reflector
IPC: H01Q15/18
Filed: 1981-04-14
Abstract: A communication antenna comprises an electrically conducting cylinder (2) and a feeder cable (3) and has a plurality of retro-reflective units (4) formed thereon to reflect short- wave electromagnetic radiation (such as radar signals or laser beams). The antenna thus adds to its normal function as a communication receiver/transmitter, the function of a location indicator. <IMAGE>
Patent GB-2081498-A (GB)
Title: Discharge lamp device
IPC: H01J61/38
Filed: 1981-06-25
Abstract: A discharge lamp device has a discharging zone within a tubular discharge lamp (1) which is selectively biased with respect to the axis of the lamp (1) to render the light distributing characteristic non- uniform in the circumferential direction of the lamp. Utilizing such biased discharging zone, a light of selective color or color tone dependent on a color or color tone determining material disposed along the biased zone can be provided. The discharging zone biasing is realized specifically preferably by an electromagnetic means. <IMAGE>
Patent GB-2101252-A (GB)
Title: Locknut
Inventor: THOMAS PHILIP GARFIELD
IPC: F16B39/30
Filed: 1981-06-30
Abstract: A locknut has an internal thread the lower portion of which is of uniform diameter about an axis (16) inclined at a small angle  alpha to the axis (14) of the body of the nut. The upper portion of the thread is formed on a frusto-conical surface  beta  about the axis (16) and the thread is distorted inwardly at its upper end (at 20). When the nut is threaded onto a bolt it is inclined at the angle alpha  to the bolt shank. When its lowest corner 15 engages the surface of the component to be secured; the nut rocks until the whole of surface 11 contacts the other surface and the distorted thread portion 20 is wedged against the bolt threads to lock the nut. <IMAGE>
Patent GB-2081649-A (GB)
Title: Monitoring image density in electrophotographic copiers
IPC: G03G15/08
Filed: 1981-07-21
Abstract: In a method for controlling image density in xerographic apparatus, wherein a standard image patch is exposed to light and developed, the density of the resulting toner density control image (22) is measured by reading device (20, 21), and the toner is adjusted in accordance with the value of the measured density of the control image, measurements of the density of the control image are improved by reading a signal indicative of the density of the control image at reading device (20, 21) continuously or intermittently over an extended period of time. As a result, it should be possible to eliminate errors caused by image-size reduction, misalignment or copy paper misfeed. <IMAGE>