baber/WOPTO huggingface dataset:
Patent GB-2024383-A (GB)
Title: Extractor mechanism
IPC: F41A15/14
Filed: 1978-12-05
Abstract: A fire-arm having a bolt assembly includes a bolt 9 received by a bolt carrier 8 and axially movable relative thereto and a T-shaped extractor 1 set freely in a T-shaped recess 10 in the bolt and retained in the recess by the bolt carrier whilst being held axially relative to the bolt by the T-shape of the extractor and the recess. In a first position of the bolt relative to the carrier, in which position a portion 7 of the extractor engages the bore of the bolt carrier, the extractor is held in a first position in which it engages a cartridge for extraction from the chamber. In a second position of the bolt relative to the carrier, in which position the portion 7 is received Within a recess 13 in the bore of the bolt carrier, the extractor is held in a second position in which it is withdrawn from a cartridge. <IMAGE>
Patent GB-2015944-A (GB)
Title: Pneumatic tyre tread
IPC: B60C11/11
Filed: 1979-01-11
Abstract: A pneumatic vehicle tyre comprises a profiled tread formed of several rows 1, 2 of blocks 4 extending in the circumferential direction of the tyre, the rows being separated from each other by zig-zag or undulating grooves 3, the individual blocks forming each row of blocks being separated from one another by grooves 5 each comprising axially directed sections 6 which, in plan, gradually widen towards the edge of the tread and a section 7 inclined at 30 DEG -50 DEG  to the circumferential direction of the tyre, and each section 7 having substantially parallel lateral surfaces. <IMAGE>
Patent GB-2016504-A (GB)
Title: Reactive dyestuffs
IPC: C09B62/008
Filed: 1979-02-27
Abstract: Reactive dyestuffs which possess at least two sulpho groups and, in the form of the free acid, correspond to the formula   <IMAGE>  wherein,  D denotes a radical of the formula   <IMAGE> R denotes hydrogen, halogen, alkyl, alkoxy,  R1 and R2 independently denote hydrogen or alkyl,  p, q and r are independently 0 or 1,  m is 0, 1 or 2,  n is 1 or 2 and x denotes a fibre-reactive radical.e
Patent GB-2028910-A (GB)
Title: Key-operable Locks
IPC: E05B29/04
Filed: 1979-03-06
Abstract: A cylinder lock has apertured disc- tumblers (9) that are abutted by the key (12) to one side or the other within their apertures (19) in dependence upon the way up with which the key (12) is inserted, so that the cut of key-step required to withdraw the tumblers (9) into the barrel (1) for release of the lock depends on the way up of key- insertion. For some tumblers the cut required differs from one side to the other of the aperture (19), whereas the others it is the same. "Dummy" tumblers are spring biased to be normally withdrawn and to be displaced upon key-entry so that the tumbler projects from the barrel to preclude release of the lock, unless the abutting key-step is of the correct cut to result in an overall zero displacement. Noses of rectangular cross-section project into the key- passageway and key slot (22) to assist guidance of the key (12) during its insertion. <IMAGE>
Patent GB-2015800-A (GB)
Title: Internally illuminated units
IPC: F21V23/06
Filed: 1979-03-13
Abstract: An internally illuminated unit which can be secured end-to-end with similar units on a fixed support to provide an illuminated house number or other sign, comprises an electrically insulating base member 1 carrying a lamp 13 and conductors 10 for connecting the lamp, in parallel with the lamps on the other units, to a source of electric current, and a cover member 25 of translucent plastics material which may bear a number or other sign, is fitted over and detachably secured to the base member and is cut away at its ends for the passage of connectors for the conductors of adjacent units. <IMAGE>
Patent GB-2018969-A (GB)
Title: Ignition/Flame-Detection Device for a Burner Combustion Control System
IPC: F23Q3/00
Filed: 1979-03-15
Abstract: An ignition/flame-detection device for a burner combustion control system comprises a first series-circuit including an electrode 3, a pulse generator circuit 5, a bidirectional thyristor 17 with two terminals and a burner 1, a second series-circuit including a capacitor 10, a resistor 12, and a secondary winding of a transformer 8 having a primary winding connected to an external AC power source, the second series- circuit being connected across the thyristor, a low-pass filter 13, 14 for smoothing a voltage appearing across the thyristor due to the presence of flame, and a flame detector circuit 15 for detecting the smoothed voltage, thereby generating a flame detection signal. With such a circuit arrangement, an erroneous operation of the device is prevented and a flame detection sensitivity of the device is improved. <IMAGE>
Patent GB-2019560-A (GB)
Title: Bottle sorter
IPC: B07C5/12
Filed: 1979-04-18
Abstract: A bottle sorter rotates each bottle to be sorted through 1 complete revolution, and a pair of sensors 12 and 13 sense non-specular light returned from 2 lines round the bottle. The resulting waveforms are analysed at 15 to obtain the values of several characteristics which are not dependent on the initial angular orientation of the bottle-number of. peaks, "spikiness" of the waveform, area under the waveform, and greatest distance between peaks. The waveforms are stored in a memory and analysed by a microprocessor for this. The resulting values are matched against pro-stored set of ranges of values for the various possible bottle types to identify the bottle which is then conveyed to sorter 16 where it is sorted into an appropriate one of several racks or outlets. <IMAGE>
Patent GB-2019234-A (GB)
Title: Circulatory mixing apparatus
IPC: B01F15/00
Filed: 1979-05-17
Abstract: Apparatus for mixing solutions to a required viscosity including a bowl 2 in which is rotatably mounted a mixing member 20,22 having a plurality of angled blades 24, in the nature of a propeller, located in the lower regions of the bowl. Lying closely adjacent the upper and lower respective leading and trailing edges of the blades are fixed means 38,30 with which said blades co-operate to subject the material in the bowl to shearing actions, while diffusion means surround the radially outer edges of the blades to reduce swirl in the material emanating from between the blades. The position of an adjustable draught tube 42 in the central regions of the bowl above the blades can be altered to determine the height of the circulation path of material to ensure that large and small batches of material are effectively mixed. Alternatively, the draught tube may be provided with a plurality of openable apertures to control the circulation flow. <IMAGE>
Patent GB-2050258-A (GB)
Title: Combined push chair and high chair
IPC: A47D1/06
Filed: 1979-06-07
Abstract: The combination has a chassis with two spaced wheeled axles, tubular sides members 3 of L-shape; and a back frame member 4 pivoted at 5 to each side member 3 and supportable by a hinged telescopic supporter 6 at each side. A lower seat 7 is formed by canvas between the sidemembers and back frame members, an upper seat 10 is foldably carried on the upper parts of the back support frames and itself supports a pivotable tray 12 having arms 11 clippable thereto. A brake 17 may be actuated to prevent movement of the wheels and a shopping bag accommodated rearwardly of the fabric seat. <IMAGE>
Patent GB-2027616-A (GB)
Title: An Electrostatic Record Material
IPC: G03G5/10
Filed: 1979-07-04
Abstract: An electrostatic record material comprising an electroconductive base sheet and a record layer formed on the base sheet, said electroconductive base sheet having an electroconductive layer containing (i) a zinc oxide powder having a specific resistivity of 0.01 to 500 ohm-cm at pressure of 150 kg/cm<2> and (ii) a water-soluble or water-dispersible adhesive resin.
Patent GB-2054482-A (GB)
Title: Pneumatic tyre
IPC: B60C15/02
Filed: 1979-07-14
Abstract: A pneumatic tyre, for example for a golf trolley, comprises a plastics material circular sleeve 11 having a raised rim 15 centrally located on the inner circumference 12 of the tyre. Gripping members 18 are located on each side of the rim 15 and serve to grip the hub to which the tyre will be fitted. The tyre can be manufactured by rotational moulding, in which liquid plastics material is placed in a mould of two or three pieces, and the mould is rotated simultaneously about two axes at an increased temperature. The tyre would normally be made from a flexible plastics material to enable it to fit a variety of different hubs. <IMAGE>
Patent GB-2032426-A (GB)
Title: Improved Process for the Preparation of Chloro-bis (alkylamino)-s-triazines
IPC: C07D251/44
Filed: 1979-09-05
Abstract: Chloro-bis (alkylamino)-s-triazine is prepared by means of the step-wise replacement of two chlorine atoms of cyanuric chloride with alkylamino groups in an alkaline medium comprising water and a liquid organic compound which is a solvent for cyanuric chloride and forms a two- phase system with water, in which a molar excess of alkylamine is used in the second replacement step upon the completion of which the reaction mixture is freed from its aqueous phase and the residual suspension or solution of triazine in the organic compound by admixture with water added in a volumetric quantity of from 30 to 150% with respect to that of said aqueous phase.
Patent GB-2035938-A (GB)
Title: Inflatable reflective balloon
IPC: B64B1/58
Filed: 1979-01-26
Abstract: An inflatable balloon-advertiser (10) having a reflective, mirror-like finish and comprised of two non-elastic thermoplastic sheets (11, 12) heat sealed first along their peripheral edges (13, 14) in the configuration of the balloon-advertiser and then again at a distance from about 1/32 to about 1/2 inches from the first heat seal, the balloon-advertiser having at least one tab-like extension (16) that is provided with an opening through which the balloonadvertiser may be inflated.
Patent GB-2033558-A (GB)
Title: Cleaning means
IPC: F41A29/02
Filed: 1979-10-02
Abstract: A cleaning means for treating the internal surface of the barrel of a firearm, in particular a chromium- plated barrel, comprises a cleaning unit having a multiplicity of flexible strips 2 of abrasive cloth or the like which are arranged in the form of a whisk. In use of the cleaning means, at least part of at least some of the strips 2 penetrate into the rifling grooves of the barrel. The cleaning unit may be mounted on a conventional barrel cleaning brush. <IMAGE>
Patent GB-2039093-A (GB)
Title: Drill machine guidance using natural occurring radiation
IPC: E21B47/022
Filed: 1979-10-31
Abstract: A method for guidance of a drilling apparatus along a desired path within a substantially horizontal coal seam 14, such method utilizing the natural radioactivity that is commonly present in mineral beds 16, 20 associated with coal deposits. Drilling is initiated within the seam to a selected first depth 28 and the gamma radiation is sensed at the drilling machine to derive a count rate. Drilling is then continued through the seam providing drilling machine guidance to maintain the count rate at approximately the same output reading. The invention produces a pilot hole 30 at a constant distance from one coal/ mineral bed interface 18 if one radiation detector is used or equidistant from two such faces if two (opposite) detectors are provided. Guidance may be operator controlled or automatic. <IMAGE>
Patent GB-2040868-A (GB)
Title: Document holders
IPC: B65D75/54
Filed: 1979-11-05
Abstract: A document holder 10 comprises an envelope 11 of glass-clear polypropylene having a slit 12 extending lengthways across a first major face of the envelope. Two rectangular strips of polymeric adhesive on the face of the envelope extend parallel to the slit 12 and are protected by respective release sheets 13 of silicone-treated high density polyethylene. In use, a delivery note or other document can be inserted into the envelope through the slit 12, the release sheets 13 stripped off, and the holder 10 pressed to the article to which the document relates. As a result the document is securely held in the holder 10 to the relevant article. <IMAGE>
Patent GB-2043640-A (GB)
Title: Process for isolating methyl t-butylether from the reaction products of methanol with a c hydrocarbon cut containing isobutene
IPC: C07C41/34
Filed: 1980-02-21
Abstract: Process for isolating methyl tert-butyl ether contained in the reaction product of methanol with a C4 hydrocarbon cut containing isobutene, comprising fractionating said reaction product by introducing it at an intermediate point of a distillation zone, recovering methyl tert-butyl ether at the bottom thereof and, at the top thereof, a mixture of C4 hydrocarbons with methanol which is washed with water and condensed and wherefrom is separated a condensed C4 hydrocarbon fraction, a portion of which is fed back as reflux to the top of the distillation zone and another portion discharged, and separating the remaining water-methanol mixture by distillation.
Patent GB-2050226-A (GB)
Title: Improvements in cutting tools
IPC: A01G3/02
Filed: 1980-05-02
Abstract: A cutting tool comprising a first handle 1 having a fixed blade or anvil 9 located at one end thereof. A second handle 2 is pivotally connected to the first handle at a first pivot point 4 and a blade member 3 which is pivottally connected to the second handle 2 at a location 7 on the cutting end relative to the first pivot point 4. The blade member carries or is formed with a tailpiece 10 which lies in overlapping relationship with the first handle 1 and is connected for pivotal and sliding movement relative thereto at a location 5 on the side of the first pivot point 4 remote from the cutting end. Such arrangement provides a generally parallel cutting action. <IMAGE>
Patent GB-2051464-A (GB)
Title: Electric storage batteries
IPC: H01M10/12
Filed: 1980-05-08
Abstract: A method of making a recombinant lead acid electric storage battery comprises enclosing the cell groups which utilize a compressible highly absorbent separator in cell containers, evacuating the cells, introducing sulphuric acid electrolyte in an amount such that the cells are not flooded and within less than 6 hours but after the cells have cooled to not in excess of 40 DEG C commencing electrolytic formation of the cells in the cell containers.
Patent GB-2078288-A (GB)
Title: A trestle structure for staircases or the like
IPC: E04G1/36
Filed: 1980-06-20
Abstract: A trestle structure for working on staircases having vertical supports (1) with a working platform located therebetween. The working platform has a step construction having two parallel side pieces (2) with individual treads (3) located therebetween, the treads being arranged in parallel, staggered relation to each other. One or more reinforcement members (7) are provided to hold the trestle structure rigid. <IMAGE>
Patent GB-2056150-A (GB)
Title: Display device
IPC: G02F1/1335
Filed: 1980-07-24
Abstract: A liquid display cell switchable between transparent and light- scattering states is back-lit through a louvered (e.g. at 60 DEG ) layer (5) to brighten scattering areas. Layer 5 is provided with apertures (6) through which selected regions of the cell are more strongly illuminated via separate switched light sources (9). The separately illuminated regions may be provided with louvers (71) parallel to view (21), colour filter (7) and possibly with light guide fibre bundles between sources (9) and apertures (6). <IMAGE>
Patent GB-2081599-A (GB)
Title: Sieve tray for contacting vapour and liquid
IPC: B01D3/22
Filed: 1980-08-07
Abstract: A sieve tray has one or more sieve passages 12 with a vapour outlet 14 protruding beyond the plane of the surface 10 which, in use, will carry liquid. The degree of protrusion is sufficient that, in use, liquid flowing over surface 10 toward the outlet 14 will be diverted upwardly into contact with vapour from the outlet 14. The protrusion may be formed integrally with the tray or separately therefrom. Preferably the outer wall is concavely shaped 15 to assist upward diversion of flow. A preferred tray also has an inwardly converging entrance 17 to the sieve passage 12, the inner wall of which may be smoothly curved 16 or be frusto-conical. Improved turn-down and lower pressure drop are attainable without loss of tray efficiency. <IMAGE>
Patent GB-2059175-A (GB)
Title: Electrical generator
IPC: H02K21/24
Filed: 1980-09-03
Abstract: The present invention relates to an electrical generator which comprises a magnetic flux-return member 13 and a disc-type winding 1 serving as a stator, and permanent magnets 6 serving as the rotor 2 and arranged to generate a magnetic field parallel to the axis of the winding. The magnets 6 and the flux- return member 13 are located on opposite sides of the disc-type winding 1 and the axial position of the flux-return member 13 is adjustable 12 to vary the magnetic flux gap between the magnetic flux-return member 13 and the magnets 6, and thus the generator out-put voltage. The adjustment may be effected by a screw or a cam mechanism, or automatically in response to the torque exerted on the stator by the rotor to provide an output regulated responsive to changes in rotor speed. As shown, the winding 1 and the flux- return member 13 are both mounted on an adjustment screw 9 and move together. <IMAGE>
Patent GB-2060874-A (GB)
Title: Cigarette rod optical inspection
IPC: A24C5/34
Filed: 1980-10-06
Abstract: An inspection device for a continuous cigarette rod comprises a plurality of infra-red emitter-detector units (2) circumferentially spaced around the path of a rod. The light from each unit (2) is focussed onto and collected from a specific area of the rod. Two, or more, axially displaced arrays of units are each arranged to inspect areas of the rod which are staggered in relation to the areas inspected by the other array or arrays. Signals from the units are multiplexed and transmitted to processing circuitry. Instantaneous signals are compared with predetermined values derived for each optical unit as a proportion of the running average of the instantaneous signal. If the instantaneous signal falls below this predetermined value a warning device is operated and the cigarette is ejected. <IMAGE>
Patent GB-2060508-A (GB)
Title: Inflatable Liferafts
IPC: B63C9/04
Filed: 1980-10-16
Abstract: An inflatable liferaft comprising two superposed buoyancy tubes of equal capacity and two inflatable canopy support tubes of equal capacity for supporting a canopy, the interior of one of the support tubes being in communication with the interior of the upper buoyancy tube and the interior of the other canopy support tube being in communication with the interior of the lower buoyancy tube, whereby upon inflation of the two buoyancy tubes by separate pressurized air of gas supplies of equal capacity, one of the canopy support tubes is inflated by air or gas supplied to the upper buoyancy tube while the other of the canopy support tubes is inflated by air or gas supplied to the other buoyancy tube. <IMAGE>
Patent GB-2064773-A (GB)
Title: Improvements in ultrasonic testing
IPC: G01N29/28
Filed: 1980-11-24
Abstract: Ultrasonic test heads 17a and 17b are located within a chamber containing a quantity of coupling liquid and through which is passed an elongate test piece 8. To seal the chamber when the test piece is absent, a slide 2 is applied to a seal 12 as indicated in the upper part of the drawing. When the test piece is present, the slide is withdrawn as indicated in the lower part of the drawing, to immerse part of the test piece in coupling liquid and expose it to the test heads. <IMAGE>
Patent GB-2074280-A (GB)
Title: Screw Thread Fasteners
IPC: F16B33/02
Filed: 1981-03-26
Abstract: In order to spread the load evenly between the threads at the loaded end of a threaded member such as a nut (Fig. 2) or a pipe coupling (Fig. 3), the threads at that end (portion X) taper outwards as at 14 or 16 while remaining of full-form. For the rest of the length (portion Y) the threads are parallel as at 15). A tap (Figure 4 not shown) in which the threads are parallel for most of the length but taper outwards at the trailing and (portion A) is used to form the nut of Fig. 2. <IMAGE>
Patent GB-2104426-A (GB)
Title: A method of arc welding from below
Inventor: HICK ANTHONY BELL
IPC: B23K9/028
Filed: 1981-08-04
Abstract: A method of arc welding together pipe sections includes the step of applying a reduced pressure to the interior of the pipe when welding is being carried out from below to counter the action of gravity which tends to cause the weld metal to flow away from the internal surface of the pipe. The method may also be applied to welding of plates from the underside. Argon arc welding is referred to.
Patent GB-2081149-A (GB)
Title: Roll Stand for a Continuous Casting Plant
IPC: B22D11/128
Filed: 1981-08-07
Abstract: A roll stand for a multi-strand continuous casting plant has a water cooled frame supporting pairs of rolls (4a, 4b) arranged on opposite sides of the path followed by a respective one of the strands (7). The roll (4a) of each pair is drivable through a chain drive from a motor (12) and is urged against the strand by a piston and cylinder unit (8), the projected dimensions of which do not significantly exceed the width of the roll. The various mechanisms are shielded from thermal radiation by hollow, water cooled shields (21). This arrangement allows the number of strands cast simultaneously to be increased while maintaining minimal distance between the strands. Individual drive motors for the rolls may be provided. <IMAGE>
Patent GB-2107513-A (GB)
Title: Electrodes for discharge lamps
Inventor: COATON JAMES RICHARD
IPC: H01J61/073
Filed: 1981-10-02
Abstract: In a high pressure discharge lamp the electrode shank is in two parts of refractory metal, one being the wire lead through 4 which is joined to the other shank part 1 by a coil 7 wound over the joint and having at least one single wound part at which the coil 7 is welded or hot pressed 8 or 9 to one of the shank parts. The coil 7 may be an extension of the electrode overwound coil 3 and the joint 5 may underly the overwound part. If the joint 5 underlies the single wound part, both shank parts may be welded or hot pressed to the coil. W and Nb are suitable materials for the electrode parts. Electrode dimensions are given. A gap may be provided between the shank parts for the inclusion of emitter material, Fig. 6 (not shown) <IMAGE>
Patent GB-2089366-A (GB)
Title: Hydrocarbon conversion
IPC: C07C5/27
Filed: 1981-11-24
Abstract: The process comprises isomerisation, in the liquid or vapour phase, of a feed comprising a xylene or mixture of xylenes and optionally also containing up to 25% ethylbenzene using a catalyst comprising a novel crystalline aluminosilicate zeolite Nu-6(2).
Patent GB-2114008-A (GB)
Title: Game apparatus
Inventor: PARLETT DAVID
IPC: A63F9/06
Filed: 1981-11-27
Abstract: A housing 18 has a plurality of playing areas 10 arranged in a grid, each area 10 having a hole 13 which receives one of a plurality of pegs of different shape or colour. Openings 19 allow placement of pieces inside the housing, the pieces being dispensed randomly one at a time through an opening 21. To play the game, the first four pegs drawn are placed in four areas 10' and thereafter, each peg drawn must be placed on an area adjacent to an area already having a peg thereon (either across or along the board, but not diagonally) but must not be placed next to a peg of the same colour (whether across, along or diagonally of the board). <IMAGE>
Patent GB-2089777-A (GB)
Title: Process for heat-treating single crystal of tungstate
IPC: G01T1/202
Filed: 1981-12-14
Abstract: The optical transmission of a single tungstate crystal of the formula MWO4,wherein M represents at least one of Mg, Zn and Cd, is improved by heating at a temperature below the melting point of the crystal, in an oxygen-containing atmosphere.