baber/WOPTO huggingface dataset:
Patent GB-2223862-A (GB)
Title: Camera zoom lens
Inventor: HARAGUCHI KEISUKE
IPC: G02B7/10
Filed: 1989-10-16
Abstract: A zoom lens assembly for a camera has a plurality of lens groups A, B, C including at least one focusing lens group, wherein an amount of deviation from focus caused by a zooming operation is corrected by movement of the focusing lens group B. The method includes setting a reference object distance, at which no deviation from focus occurs during zooming of the zoom lens, at a finite object distance, such that the amount of movement of the focusing lens group B necessary to effect focusing is determined based upon a reference position corresponding to a position of the focusing lens group at the reference object distance, in accordance with focal length data and object distance data. The zoom lens assembly includes a stationary lens barrel, Fig. 4 (not shown), and a rotatable cam ring which is supported on the stationary lens barrel for movement in the direction of the optical axis while being rotated, and which includes at least two cam grooves. There is also disclosed a barrier mechanism, Fig. 9 (not shown), of the lens barrel, including a pair of barrier plate assemblies which are adapted to open and close an opening of the lens barrel, wherein each of the pair of barrier plate assemblies includes a pair of plate elements which are symmetrically arranged with respect to a center of the opening. In the closed position, the barrier plates are arranged side-by-side. 
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Patent GB-2227395-A (GB)
Title: Improvements in or relating to communications systems
Inventor: THOMPSON RAYMOND
IPC: H04J3/24
Filed: 1989-12-16
Abstract: A digital communications system comprises a plurality of single channel radio access terminals each including a transmitter and receiver. Central equipment is also provided which includes transmitters and receivers and arranged to interface the terminals with a switching arrangement. The system handles packet traffic, on channels having a finite bit rate capability. Each packet has an identity header for recognition by a particular terminal. The central equipment includes a coder arranged to code the packets so that the available channel capacity is occupied. <IMAGE>
Patent GB-2239954-A (GB)
Title: Continuity tester
Inventor: HELLIER DAVID
IPC: G01R31/02
Filed: 1989-12-22
Abstract: In a continuity tester (10), two contact bars (20, 22) on a housing (12) are in electrical connection with circuit means (14) and are located with respect to one another to accommodate and test a range of sizes of electrical components (not shown). <IMAGE>
Patent GB-2239605-A (GB)
Title: An arrangement for supporting and positioning a mobile article
Inventor: KHODABANDEHLOO KOOROSH
IPC: A61B19/00
Filed: 1990-01-05
Abstract: An article such as a surgical tool (22) is carried by a carriage (10) which is movable along a curved track (4). The track (4) is pivotable in a support frame (2). By moving the carriage (18) along the track (4), and by pivoting the track (4), the tool (22) can be positioned at any desired orientation and at any position within a working envelope. Further flexibility can be achieved by displacing the support frame (2) relatively to a base. The arrangement may be operated by drive motors under the control of a computer. <IMAGE>
Patent GB-2228815-A (GB)
Title: Enuresis detection device
Inventor: MURPHY WILLIAM
IPC: G08B21/20
Filed: 1990-01-11
Abstract: The device comprises a transducer mat for placing beneath the patient, which is formed by screen printing an interdigitated pattern of conductors 20a, 22a on a flexible hydrophobic sheet 12 so as to provide an integral structure. The conductors may be perforated. A layer of electrically-insulating net material may be bonded to the flexible sheet over the conductors so as to isolate the patient from the conductors. <IMAGE>
Patent GB-2231904-A (GB)
Title: Kerb/drainage channel
Inventor: NEARY TERENCE EDWARD
IPC: E01C11/22
Filed: 1990-05-24
Abstract: A concrete drainage block is formed with a drainage channel (62), and an opening (64) is angled forwardly and upwardly from the channel (62) to a front wall (66). A cast iron insert (70) seats within the opening (64) and is grouted into position, the insert (70) providing apertures by means of a grid whereby to provide for surface water drainage from a roadway into the channel (62). A pair of ovoid through holes (80) in the block (60) can receive respective profiled plugs, each having a first part of ovoid shape and a protruding lug. The plugs are located in the holes (80) of a block (60) to be installed and the lugs can locate in the corresponding holes (80) of the already installed block to assist in lowering of the block (60) into position before being abutted to the already installed block. <IMAGE>
Patent GB-2245756-A (GB)
Title: Digital driving of injection lasers
Inventor: EPWORTH RICHARD EDWARD
IPC: H01S5/0683
Filed: 1990-06-23
Abstract: In a laser driver a clock pulse 11 is added to the data waveform 10 of the NRZ laser drive current to form a waveform 13 which drives the laser above lasing threshold before the end of every data 0 bit period. This avoids in data 1 bit periods, the turn-on and chirp problems associated with driving the laser hard on from beneath lasing threshold. Optionally the clock pulse addition is inhibited in data 1 bit periods to provide the modified drive waveform 14. The driver circuit is detailed (Fig. 3). <IMAGE>
Patent GB-2235498-A (GB)
Title: Starting gas turbine engines, for example in missiles
Inventor: OWEN WILLIAM M
IPC: F02K9/78
Filed: 1990-07-12
Abstract: A gas turbine engine 12 is started by inducing an air flow through the engine by lowering the pressure in the exhaust duct 64 of the engine. In a cruise missile 10 having a booster rocket 60 for initiating flight and a thrust producing gas turbine 12 for sustaining flight the gas outlet 62 for the rocket engine 60 is in the exhaust duct 64 downstream of the gas turbine engine exhaust 20 so that operation of the rocket 60 to initiate flight of the missile 10, draws sufficient air through the engine 12 to accelerate the same to starting speed. <IMAGE>
Patent GB-2234936-A (GB)
Title: Band sawing machine
Inventor: STOLZER ARMIN
IPC: B23D53/04
Filed: 1990-07-31
Abstract: A band sawing machine has a frame 1 with a workpiece bench 2 upon which a workpiece 3 is secured in the cutting zone by clamping jaws 5, 6. On the machine frame 1 a tool carrier 8 for a saw band 9 working in the cutting zone with rectilinear cutting movement is mounted for movement in the direction towards the workpiece 3 and the workpiece bench 2. in the region of the plane of the workpiece bench 2 the cutting line of the saw band 9 has an angular position 19 in relation to the plane of the workpiece bench 2, with its angle opening in the cutting direction 18. <IMAGE>
Patent GB-2241256-A (GB)
Title: Cutting thread
Inventor: HARBEKE JORG
IPC: A01D34/416
Filed: 1991-01-09
Abstract: In order to reduce the noise level, in cutting thread for a rotary town trimmer, in particular at high rotational speeds and thus also a high peripheral speed, it is proposed that the cutting thread 1 has a cross-section not having symmetry. On the surface of its base member 2 forming virtually the entire cross-section of the cutting thread, the cutting thread preferably has at least one groove and/or elevation 3 extending in the longitudinal direction. <IMAGE>
Patent GB-2252588-A (GB)
Title: Loft ladder automation
Inventor: HARVEY DOUGLAS
IPC: E04F11/04
Filed: 1991-02-05
Abstract: A loft ladder of the captively sliding type is adapted to be fully automatic by the provision of a power unit (5) in the form of a reversible type of electric motor driving a gear assembly, incorporating a non-reversible worm and wheel, which in turn drives a drum or pair of drums around which a nylon cord (3) is wrapped. This nylon cord 3, by means of pulleys 5, is the medium through which the ladder 1, is lowered and raised. Accurate and critical placing of these pulleys 5, ensure a smooth transition from the angle of the ladder 1, when in use, to the horizontal position in the loft when stored. A three way spring loaded switch, controls the motor unit which automatically shuts off via a micro-switch 12, at the completion of trap 4, closure. <IMAGE>
Patent GB-2243018-A (GB)
Title: Magnetron
Inventor: AIGA MASAYUKI
IPC: H01J23/54
Filed: 1991-02-13
Abstract: A magnetron includes an anode cylinder (1), a plurality of vanes (2), a cylindrical metallic container (15), an output-side insulating tube (16), an antenna conductor (11), and a choke body (21). One end of the choke body (21) is electrically coupled with the cylindrical metallic container (15), and the other end of the choke body (21) is in the output-side insulating tube (16). The choke body (21) is provided in the inner space of the output-side insulating tube (16). A 1 DIVIDED 4 wavelength choke body of an annular groove type (21) or of a coaxial type (31) is utilized for the choke body. The leakage of high-order harmonics of short wavelength can be effectively suppressed. <IMAGE>
Patent GB-2245556-A (GB)
Title: Fluid supply device
Inventor: SLATER CHRISTOPHER JOHN
IPC: C02F3/20
Filed: 1991-06-24
Abstract: A fluid supply device for the controlled supply of fluid e.g. gas to an activated sludge tank comprises a plurality of diffusers 14 arranged to lie in series, flexible connection members 32, 13 for flexibly interconnecting successive diffusers and a fluid supply means 32 for the supply of fluid from a source to said diffusers, each diffuser having at least an inlet portion for the supply of fluid thereto and an outlet matrix 38 having a plurality of passages through which fluid may flow, said flexible connection members providing at least in part a structural link between successive diffusers of the series whereby when one diffuser is subject to a lifting force that force is transmitted by a flexible connection member to a successive diffuser. The flexible connection members may comprise hoses 32 supplying the fluid and/or ropes 13b, 13c (30). The lower part of the diffuser may be filled with ballast 24. <IMAGE>
Patent GB-915974-A (GB)
Abstract: 915,974. Stencil switches. PELHAM, R. H. Oct. 14, 1960 [July 30, 1959], No. 26238/59. Class 38 (5). [Also in Group XXXVIII] In an automatic musical instrument, reeds, bells or electrically-operated sounding elements are controlled by a perforated tune sheet 17, the perforations 12 or 21 in which permit selected spring-pressed radial plungers 13 to project from a cylindrical roller 10. The projecting plungers operate switches or levers 22. A wedge-shaped block 23 depresses all the plungers to the surface level of the cylinder before the tune sheet 17 runs into contact with the cylinder surface. The roller 10 drives the tune sheet by means of sprockets 16 engaging sprocket holes 20. In Fig. 5, all the plungers are depressed by a roller 24 as the tune sheet runs on to the roller 10 and are released as roller 25 takes off the tune sheet. Each plunger 13 slides on a rod 14 and is urged outwards by a spring 15.
Patent GB-2255683-A (GB)
Title: Optical fiber amplifier and its amplification method
Inventor: MATSUSHITA KIWAMI
IPC: H04B10/291
Filed: 1992-03-13
Abstract: A optical signal from the input terminal 6a is amplified in the optical fiber 1 doped with rare earth. The excitation light from the excitation light source 2 is outputted to the optical fiber doped with rare earth 1 through the optical coupler 5. A part of the light is branched from the optical coupler 11 to optical receiver 14 through the band pass light filter 13. The optical receiver 14 converts the received optical signal to an electrical signal and outputs it to the error signal output circuit 14. The receiving current is amplified in the error signal output circuit 14 and supplied to the excitation light source output control circuit 9. The excitation light source output control circuit 9 executes feedback control so as to obtain a constant excitation light level outputted to the optical fiber doped with rare earth from the excitation light source 2, in response to the output signal of the optical receiving circuit 7, and the output signal of the circuit 17. <IMAGE>
Patent GB-2255545-A (GB)
Title: Packaging a stack of sheets
Inventor: FRANCIS DAVID JAMES
IPC: B65D75/06
Filed: 1992-05-07
Abstract: An article comprising a plurality of, eg abrasive, sheets 40 positioned with a packaging band 2, 4, 6, 8 that may be repeatedly fastened and unfastened. The packaging band is formed from a strip of material (fig 3) having cooperating fastening means at each end comprising a pressure-sensitive adhesive, eg an adhesive tape, 32 and a fastening surface 34 to which the pressure-sensitive adhesive may be repeatedly adhered and removed when the strip is formed into a band. At each side of the strip side portions (5, fig 3) may be provided so as to cover the ends of the sheets. The fastening surface may be provided with a finger-lift 36. <IMAGE>
Patent GB-2257018-A (GB)
Title: Waterproof covering
Inventor: MCKEON PAUL
IPC: A41D3/08
Filed: 1992-06-22
Abstract: A waterproof covering for a person in a body support. e.g. a wheelchair or stretcher, comprising a cape (10) having an apron (12) to extend over and around the person when located in a body support (14). The apron (12) has a head opening from around which a hood (16) is provided. A portion (20) of the apron (12) is shaped to complementarily fit around the part (18) of a body support (14) behind the person. The apron (12) has a series of pleats (22) provided parallel or substantially so with the top of the fitted portion (20). A flared edging (28) is provided around the opening of the hood (16) to deflect rain from the opening. A secondary cover (32) extends from the waist of the person and over and around the legs. <IMAGE>
Patent GB-2268704-A (GB)
Title: Layup preparation for fibre reinforced composites
Inventor: MILLS ANDREW
IPC: B26D7/01
Filed: 1992-07-16
Abstract: In preparing a layup (21) of piles of fibrous material (16) for the manufacture of a fibre reinforced plastics composite a cutting table (1) is used, which has a frame (2) defining an open central cutting area (3), rollers (4, 5, 7, 8, 8, 10) to draw a length of the material (16, 17) thereacross and cutting means (15) to cut the piles (32) from the length of material (16), (17) to allow a cut ply (32) to fall through the open area (3) in the frame (2) onto a layup surface (12) whereby to avoid handling of the cut plies (32). <IMAGE>
Patent GB-2269680-A (GB)
Title: Overhead projector display device having slidable support frame and opaque blind
Inventor: MAIN DAVID
IPC: G03B21/132
Filed: 1992-08-13
Abstract: A display device 1, for use with an overhead projector 12, comprises a base frame 2 defining a light transmission aperture 10 which is in register with an image support frame 4 in use of the device 1. The base frame 2 has slidably mounted thereon the support frame 4 for an opaque or transparent object 6, the support frame 4 being progressively displacable from a first position substantially in register with the base frame 2 light transmission aperture 10 to a second position with only a portion of the support frame 4 in register with the base frame aperture 10. The device 1 also comprises blind means 8 displacable across the base frame aperture 10 from a first retracted position to a second deployed position extending across at least part of the base frame aperture 10 so as to occlude at least part of the aperture 10. The support frame 4 and the blind means 8 have control means for independently controlling the displacement thereof. <IMAGE>
Patent GB-2272195-A (GB)
Title: Conveyor system.
Inventor: STADLER JEFFERY A
IPC: B65G25/02
Filed: 1992-11-05
Abstract: A lift and carry or walking beam conveyor in which parts are conveyed along a pair of parallel stationary rails 22 by a pair of movable rails 30 located between the stationary rails. The movable rails are moved from a point below to a point above the stationary rails and from a retracted to an advanced or forward position. The conveyor incorporates a curved or quarter-turn portion 24 which is uniquely actuated by pivotal connections to contiguous straight sections. <IMAGE>
Patent GB-2262120-A (GB)
Title: Post and rail assembly incorporating lockable warning (lamp) unit
Inventor: BALL JONATHAN MICHAEL
IPC: E01F13/02
Filed: 1992-11-24
Abstract: A post and rail assembly comprises a rail and, a post provided with a first aperture. A warning unit (2) has a body which is insertable into the upper portion of the post (1). The said body includes a second aperture aligned with the first aperture when the body is inserted. Means are provided for locking the warning unit in the upper portion of the post. A flexible tether (3) is secured by one end to the rail and has at the other end a head removably engageable in one of said apertures and held captive therein when the other aperture is brought into alignment. <IMAGE>
Patent GB-2262530-A (GB)
Title: Landfill lining
Inventor: CHRISTIE ALAN WILLIAM
IPC: C08L95/00
Filed: 1992-11-26
Abstract: A composition suitable for a landfill site liner comprises bitumen, aggregate, sand and a slate filler. Generally layers of two different such compositions are used to form the liner. The bitumen may be modified with a styrene-butadiene-styrene polymer.
Patent GB-2274409-A (GB)
Title: Thin film mosaic composite membranes
Inventor: LINDER CHARLES
IPC: B01D69/12
Filed: 1993-01-22
Abstract: Semipermeable composite membranes which comprise on a microporous support a thin polymer film of mosaic structure whose isolated anionic and cationic areas, preferably in form of stripes, extend to the thickness of the film. The mosaic structure can be achieved by e.g. masking/demasking techniques with photoresist materials combined with chemical modification steps in order to prepare the positively and negatively charged areas. These membranes have good permeability for electrolytes, such as salts of mono- or polyvalent inorganic acids, while retaining low moleculas weight organic solutes.
Patent GB-2265712-A (GB)
Title: Condition detecting units with adjustable sensitivity
Inventor: MINNIS DAVID A
IPC: G08B29/14
Filed: 1993-03-30
Abstract: A silencable photoelectric-type detector, such as a smoke detector, includes a source of radiant energy 12 and a detector 14. A generator circuit 36 provides a sequence of pulses to energize the source. A biasing circuit 22 biases the detector. The detector can be temporarily silenced, when in alarm, by reducing the energy level of the pulses or altering the bias point of the detector for a period of time. The period of time can be established by an RC circuit. The effect of the energy level reduction or the bias point alteration is to reduce the sensitivity level of the detector temporarily. <IMAGE>
Patent GB-2268707-A (GB)
Title: Adapting printer to cut sheet or continuous web by multipositionable closure flap.
Inventor: BUSCHMANN ULRICH
IPC: B41J11/48
Filed: 1993-06-25
Abstract: A printer (1) where both endless webs (5) and single sheets (8) are inserted from an operating side (4) is described. The printer (1) has a housing (2) with a housing opening for the respective paper channels provided on the operating side (4). Each channel continues backwards and upwards in the interior (2a) of the housing (2) behind a print counter-surface. The housing opening is closeable by a flap (12). In order to allow use of both the paper channels and to provide free accessibility to tractors (7), the flap (12) is pivotable out of the closed position into a pivoted-down position (15) (Fig 5) in which it acts as a paper support plate (16) by means of a first articulation, and is pivotable out of the closed position into a pivoted-up position (18) (Fig 1) by means of a second articulation to enlarge the access opening to the tractors (7). <IMAGE>
Patent GB-2285078-A (GB)
Title: Bridge
Inventor: HALEY WILLIAM J
IPC: E01D2/00
Filed: 1993-08-06
Abstract: A bridge 15 comprises a pair of sections 10 laid side-by-side, so that their base longitudinal elements 11 lie a common plane and so that their top longitudinal elements 12 lie in a separate elevated common plane. The sections 10 are interconnected by plates 17 and cross members 18, 19. A walkway 26 is mounted or the top longitudinal elements 12. <IMAGE>
Patent GB-2281356-A (GB)
Title: Gas turbine guide vane platform configuration
Inventor: ROSE MARTIN GEORGE
IPC: F01D5/14
Filed: 1993-08-20
Abstract: A gas turbine engine turbine (16) (Fig. 1) is provided with an annular array of nozzle guide vanes 20 which define a radially inner annular platform 27. The radially outer surface of the platform is configured so as to define a plurality of convex and concave portions. These portions are so arranged as to vary the static pressure of the gases which operationally flow across the vanes 20 in such a manner that the static pressure in the field 26 immediately downstream of the vanes 20 is substantially circumferentially uniform. <IMAGE>
Patent GB-2282437-A (GB)
Title: Vibration damped dilution refrigerator
Inventor: WHITE JULIAN DARRYN
IPC: F25D19/00
Filed: 1993-09-22
Abstract: A dilution refrigerator comprises a chamber that receives a cryogenic fluid, an opening in the chamber, an elongate insert (7) that carries a housing 5 which contains apparatus (4) to be tested within the chamber. The insert extends into the chamber through the opening and a sleeve (10) surrounds the insert. The sleeve is adapted to be slidingly and sealingly received in the opening and to permit the insert to be removed from the chamber. A vibration damping arrangement (14) resiliently couples the insert to the sleeve. <IMAGE>
Patent GB-2284914-A (GB)
Title: Discretionary viewing control
Inventor: GODFREY MICHAEL KEITH ANDREW
IPC: H04N7/16
Filed: 1993-12-18
Abstract: Discretionary Viewing Control is provided at the point of display (TV, Monitor, Computer), restricting access to unsuitable program material based on user programmed conditions. This includes day, date, content, time, channel and signal source. The control conditions are fully flexible from simple time based data, through channel, day, time of day conditions, up to automatic control from codes incorporated into the source media.
Patent GB-2277571-A (GB)
Title: Elastomeric shock absorber
Inventor: BRUSKI MAREK
IPC: F16F9/346
Filed: 1994-01-19
Abstract: The shock absorber comprises a casing (1) filled with compressible elastomer, a piston head (6) immersed therein and provided with connecting ports (14) communicating front and back chambers of the said piston head, the piston head also being provided with a mobile member (12) located between the surface from which the ports emerge and a stop block (13). The shock absorber includes channels (16) communicating ports (14) with the cylindrical surface (17) of piston head, while on the inner surface (18) of the casing at least one groove (19, 20) is made, which together with the said cylindrical surface of the piston head forms a flow chamber. The flow chamber is shaped as a solid of revolution or its part, eg. a cone, a ring, or a torus. <IMAGE>
Patent GB-2277713-A (GB)
Title: Photosensitive drum,process cartridge and image forming apparatus
Inventor: ARAKI RYUJI
IPC: G03G21/16
Filed: 1994-04-27
Abstract: A photosensitive drum (9) usable with an image forming apparatus includes a cylindrical member having a photosensitive material at its surface; and juxtaposed helical gear (9c1) and spur gear (9c2) at a longitudinal end of the cylindrical member. The gears may be integrally moulded from plastics material, and be internally reinforced by a ring member (9c4). <IMAGE>
Patent GB-2292106-A (GB)
Title: Method of releasing a moulded clay product from a mould
Inventor: MCGEE DONALD RICHARD
IPC: B28B13/06
Filed: 1994-08-11
Abstract: In the production of a moulded clay product 20, for example a cup or bowl, in particular when producing such products by mass-production methods, the clay article 20 is released from the mould 12 or 21 by irradiating the article with radiation from a catalytic infra-red heater 15 or 23. By this method, mould-release times may be significantly reduced. <IMAGE>