baber/WOPTO huggingface dataset:
Patent GB-2178557-A (GB)
Title: Visual optical systems
Inventor: NEIL IAN ALEXANDER
IPC: G02B13/00
Filed: 1986-07-15
Abstract: In a visual optical system (40) having an image relay optical assembly for relaying an image (44) via a substantially parallel light space (47) to an image (45), the assembly includes a first lens group E spaced by parallel light section (47) from a second lens group F. Lens groups E and F are each doublets and each has a positively powered lens element E2, F1 and a negatively powered lens element E1, F2 arranged such that lens element E1 is proximal image (44) and lens element F2 is proximal image (45). The positively powered lens elements E2, F1 are made of a first glass and the negatively powered lens elements E1, F2 are made of a second glass, the V-value of the first glass being greater than the V-value of the second glass by at least 10 units and the refractive index of the first glass being greater than 1.54 and having a value similar to or greater than the refractive index value of the second glass which is itself numerically less than 1.74. The relative partial dispersion of the first glass is substantially equal to the relative partial dispersion of the second glass. <IMAGE>
Patent GB-2189331-A (GB)
Title: A cassette for photographic paper sheets
Inventor: FLITTON JAMES FREDERICK
IPC: G03B17/32
Filed: 1986-08-29
Abstract: A cassette 10 is adapted to be loaded with a photographic paper sheet to take a picture in a photographic camera and afterwards to transfer the exposed sheet to an automatic processor 14 in full daylight without exposing the sheet itself to the daylight. The cassette 10 has a slidable shutter 32 for covering the sheet before and after exposure. It also has a feeder 40 for pushing the sheet out of the front end 26 of the cassette 10 through a slot 60 for the sheet to be taken up by pinch rollers 20, 22 in the processor 14. An adaptor device 16 is fitted in the aperture 18 of the processor 14 and has pegs 28 which enter holes 64 at the front end 26 of the cassette 10 and cause a second shutter 62 to pivot out of the way of the photographic sheet 12 for the sheet to be fed into the processor. Normally this second shutter 62 is spring-biased into a position in which it blocks light from reaching the photographic sheet 12 through the front end slot 60. <IMAGE>
Patent GB-2196887-A (GB)
Title: Inclined continuous metal- casting plant
Inventor: DJUDKIN DMITRY ALEXANDROVICH
IPC: B22D11/14
Filed: 1986-11-05
Abstract: An inclined continuous metal- casting plant comprising an inclined rectangular mould (1) resting on a narrow face, a secondary colling system (2), a drawing device (3) and a device (5) for cutting an ingot (4) into specified-size billets, all the above-said units being arranged one after another on a common processing axis in the ingot-forming direction. The angle of inclination of the horizontal is in the range from 20 DEG  to 60 DEG . The mould cavity may have various shapes (Figs. 2-4, not shown.) <IMAGE>
Patent GB-2183445-A (GB)
Title: Treatment of foodstuffs destined for preservation
Inventor: CATELLI CAMILLO
IPC: A23B7/148
Filed: 1986-11-24
Abstract: The invention relates to a process for the complete treatment of foodstuffs destined for preservation. The process envisages introduction of harvested produce, previously washed and selected, into a vacuumized environment, and implementation of all of the prescribed processing stages internally of the selfsame environment, with the end product emerging from the vacuum only when packaged in readiness for preservation. Such a process is especially suitable for fruit and vegetables, and market garden produce generally. <IMAGE>
Patent GB-2185161-A (GB)
Title: Controls for electrical heating elements of water heaters
Inventor: BLACKBURN ARTHUR MALCOLM
IPC: A47J27/62
Filed: 1986-12-09
Abstract: The control may be applied to a domestic hot water system or particularly to a water boiling vessel. An NTC thermistor is coupled in close heat transfer relationship with the heating element and a PTC thermistor is exposed to steam produced when the water boils. A first detector circuit IC1a responds to the rate of change of resistance of the NTC thermistor so as to turn off a triac in response to a rapid resistance change representative of the heating element being powered when there is no water or insufficient water in the vessel, and also is responsive to a predetermined low resistance condition indicative of excessive element temperature. A second detector circuit IC1b turns off the triac, possibly after a delay, in response to a predetermined PTC thermistor resistance representative of the PTC thermistor being heated by steam. In an alternative arrangement, (Fig 1), the NTC and PTC thermistor are series connected to form a potential divider, the junction point of the thermistor being connected to a single detector circuit responsive to rate of change of resistance of either thermistor. The divider may include a current sensor which operates a boil-dry indicator lamp. The triac may be cooled by close thermal contact with water in a pocket in the vessel, (Fig 4A), or the triac may have a chip secured to a large-area copper base plate mounted on the vessel body via an electrically insulating layer so that the triac is cooled by the water that is being heated, (Fig 4c). <IMAGE>
Patent GB-2199383-A (GB)
Title: Emergency brake control arrangement
Inventor: PARK TONY
IPC: B60T13/66
Filed: 1986-12-31
Abstract: An emergency brake control arrangement for a railway vehicle provides for an emergency brake application of fluid pressure to an emergency relay valve for an emergency brake application should the relay valve fail to operate to design specification. For example, if the emergency relay valve leaks it is unlikely to supply sufficient pressure to the brake actuator for an emergency application. During an emergency brake application the normal brake control is set to full service application. Normally the service brake pressure is isolated from the brake cylinders by an isolating valve. The invention provides a by-pass path controlled by a valve responsive to emergency relay valve output pressure which, in the event that the emergency pressure is below a threshold valve, opens to supply full service brake pressure in place of the emergency supply thereby ensuring that at least full service braking is achieved. <IMAGE>
Patent GB-2202888-A (GB)
Title: Window
Inventor: CALVEY RONALD
IPC: E06B3/964
Filed: 1987-02-20
Abstract: An elongate window or like member 1 of box section defines a pair of spaced channel sections 10, 11 so that a pair of cleats can be inserted into the two channel sections to provide rigidity at junctions of the frame members. <IMAGE>
Patent GB-2191428-A (GB)
Title: Toggle lever workpiece clamping device
Inventor: TUNKERS JOSEF GERHARD
IPC: B25B5/12
Filed: 1987-04-23
Abstract: A pressure-medium actuated toggle-lever clamping device for clamping workpieces has a manually operable double-armed lever 1 which is coupled to the piston rod 3 of a double-acting clamping cylinder and has a handle 10 mounted thereon for limited pivotal movement between abutments 15, 16. A multi-way control valve 25 communicates with the piston rod chamber 33 of the clamping cylinder through a venting valve 17 which is actuated by an arm 14 on the handle 10 to connect the chamber 33 to an open vent 23 to allow manual pre-clamping and adjustment of the workpiece. The piston 21 is mounted on the piston rod 3 with provision for lost motion so that when the clamping chamber 34 of the cylinder is pressurised to close clamping jaws 8,9, the piston 21 acts on the valve 17 to restore communication between the control valve 25 and the chamber 33. <IMAGE>
Patent GB-2192382-A (GB)
Title: Container for disposal of used hypodermic needles
Inventor: LEES ANTHONY
IPC: A61M5/32
Filed: 1987-06-04
Abstract: The container (22) has an aperture (32) in an upper face (26) thereof capable of receiving a used syringe needle. The upper face is provided with means for gripping opposed surfaces of a syringe hub within the aperture so as to permit the hub to be unscrewed from the barrel of the hub. The gripping means is preferably a cap (28) which is rotatable relative to the upper face (26) so as to permit engagement of the hub between a gripping surface of an aperture (30) in the cap and an edge of aperture (32).
Patent GB-2207295-A (GB)
Title: Varying brush leaf resilience during manufacture
Inventor: WANG PATRICK SHUI-CHUNG
IPC: H01R39/39
Filed: 1987-07-20
Abstract: An elongate aperture (21) is provided in a brush leaf (10) between a mounting portion (12) and a brush supporting portion (13), the length and/or width of the aperture (21) being selected according to the required resilience of the brush leaf. Thus by changing the size of the aperture it is possible to provide brush leaves which will hold a brush (18) to a commutator with different forces. <IMAGE>
Patent GB-2197365-A (GB)
Title: Surfactant mixtures containing carboxyalkyl ethers, and the use thereof for recovering crude oil
Inventor: KEIL DR KARL-HEINZ
IPC: C09K8/584
Filed: 1987-11-06
Abstract: A surfactant mixture comprises (i) a carboxyalkyl ether of the formula  R-O(CH2CH2O)x(CH2)n-COOM (R=C6-C20-alkyl, C8-C12-alkylphenyl, C4-C18-dialkylphenyl or C2-C8-trialkylphenyl;  x=1 to 50  n=1 to 3 m=sodium, potassium, ammonium or mono-, di- or triethanolamine> and (ii) an anionic surfactant selected from the group comprising sulfonates. The mixture may be used in a process for increasing yield in oil recovery.
Patent GB-2218127-A (GB)
Title: Apex structure for use in triangulated panelled pitched roof
Inventor: WALKER BRIAN
IPC: E04D3/08
Filed: 1988-04-16
Abstract: There is disclosed a roof apex structure 26 for use in a prefabricated pitched roof e.g. of a prefabricated conservatory, and which is adapted to have coupled therewith the hollow upper ends of elongate plastics frame members of a plurality of adjacent triangular roof frames. The apex 26 is formed of a plastics moulding having a number of inserts 29 secured at required spacings apart along its outer periphery 30 and each adapted to be received by a hollow end of a respective elongate plastics frame member to couple the frame members to the apex structure in a required array of adjacent triangular roof frames. <IMAGE>
Patent GB-2205043-A (GB)
Title: Hypodermic needle handling apparatus
Inventor: JONES HUGH ALFRED
IPC: A61M5/32
Filed: 1988-05-13
Abstract: Apparatus for use in handling hypodermic needles, to reduce the danger of accidental stabbing when separating the holder and needle and consequent infection, comprises a plate-like member (1) to which one end region of an elongated arm (3) is fixed, a supporting pistol grip (5) being provided at the other end region of the arm (3). The plate-like member (1) is detachably attachable to the mouth of a container and has an aperture (11) through which a needle (31) can be passed. A movable jaw (9) can grip the needle (31) to hold the needle whilst a holder (29) is unscrewed, the jaw (9) being controlled by a trigger (7) on the piston grip (5) via a linkage (8). By releasing the trigger (7) the jaw (9) moves to allow the needle to drop into the container. The apparatus is thus supported by one hand remote from the needle, whilst the other hand is used to unscrew the holder. If the needle is released before the holder (29) is fully unscrewed the danger of stabbing is reduced by the remote location of said one hand. <IMAGE>
Patent GB-2235289-A (GB)
Title: Method of testing for lead
Inventor: ASHTON KENNETH FREDERICK
IPC: G01N31/22
Filed: 1989-03-08
Abstract: A method of testing for lead in an article, the method comprising forming an aqueous solution with an acid pH in the range 1-5, bringing this solution into contact with the article, adding a sulphide containing compound to the solution, the compound being of a type which produces a colourless sulphide solution, and visually examining the resulting solution for a lead sulphide precipitate indicating the presence of lead.
Patent GB-2219763-A (GB)
Title: Hinge fitting template
Inventor: O'MARA BRIAN
IPC: B25H7/00
Filed: 1989-03-21
Abstract: A device for use in fitting hinges to a door comprises a channel-section element 10 having a rectangular aperture 12a in its base and adjacent one edge. In use, the element 10 is fitted over the edges of the door and the aperture 12a is used for either marking out or cutting out a recess required for receiving the hinge. <IMAGE>
Patent GB-2235659-A (GB)
Title: Multi-cycle sea-bed traversing system
Inventor: KINGSTON WILLIAM
IPC: B63B22/06
Filed: 1989-08-29
Abstract: An inflatable float 41 Fig 8 comprises timer and pressure controls 45, 47, 48, 49 and automonous means for lateral movement e.g. hydrofoils 51 to enable underwater gear to be automatically lifted off the sea bed at intervals and moved to a new location. The gas for inflating the float may be generated by chemical means or galvanic action in dispensers 46 each having corrodible link actuation for different prescribed times. In another embodiment the gas is supplied from a pressurized cylinder 1 Fig 1 to an inflatable bladder 6 within a float chamber via a valve 7 controlled by links corrodible at different rates and which also control operation of a flooding valve 12. Deflation of the bladder can set to a predetermined depth by a valve 10. <IMAGE>
Patent GB-2227577-A (GB)
Title: Air conditioning cooling-cum-heating system
Inventor: HAMOAKA MAKOTO
IPC: F25B13/00
Filed: 1989-11-29
Abstract: The system comprises a cooling (refrigeration) circuit comprising compressor 1, 4-way valve 2, outdoor heat exchanger 3, and indoor heat exchanger 7. This is converted into a heating circuit by reversing 4-way valve 2 and opening valve 9, so that the heating circuit comprises compressor 1, valve 2, indoor heat exchanger 7 and refrigerant heater 10 powered by gas burner 11, but not outdoor heat exchanger 3. Lack of refrigerant in the heating circuit may cause overheating, detected by detector 20; if this persists, controller 30 closes valve 9 and turns off heater 10 for a minute so that compressor 1 recovers refrigerant from outdoor heat exchanger 3. This may be done a limited number of times (eg three) before the system is shut down). 
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Patent GB-2238890-A (GB)
Title: Circuit for stabilizing a reference voltage
Inventor: CHOI HOON
IPC: G11C11/407
Filed: 1990-06-15
Abstract: A circuit for stabilizing a potential difference between a supply voltage terminal (Vcc) and ground (Vss), comprises diodes (D1, D2) connected between the supply voltage terminal and ground, a reference voltage output (OUT) being taken from that terminal of the diodes which is the further from ground. The diodes are connected to ground through a bias-adjusting MOS transistor (M3) providing a variable-resistance path. A negative feedback loop (1) controls the resistance of the transistor (M3) to stabilise the reference voltage level. The circuit is useful with a semiconductor memory device, in which case the negative feedback loop (1) comprises MOS transistors acting as voltage dividing resistances (M1, M2). <IMAGE>
Patent GB-2245612-A (GB)
Title: Gutter system
Inventor: QUINNELL GEOFFREY CHARLES
IPC: E04D13/064
Filed: 1990-06-27
Abstract: A gutter system is formed from selected gutter elements which are one piece injection mouldings formed with integral bracing means 9, fixing means 10 and interconnection means 5, 6 in the form of corresponding socket and spigot ends. <IMAGE>
Patent GB-2238359-A (GB)
Title: Toothed clutch or brake
Inventor: PERRY FORBES GEORGE DE BRIE
IPC: F16D25/061
Filed: 1990-09-04
Abstract: An engagement device comprising two relatively rotatable members (24, 29) each having a set (22, 23) of face teeth, the members being capable of relative axial movement to provide mutual engagement of the sets of teeth. The teeth are shaped to permit high speed slip between the members when the sets of teeth are disengaged but still in contact under axial load.
Patent GB-2237027-A (GB)
Title: Solid ester lubricant
Inventor: ASTORI GIORGIO
IPC: C10M105/40
Filed: 1990-10-16
Abstract: A solid fatty acid ester having a melting point equal to or greater than 35 DEG C, is used as a lubricant additive in the fuel of an internal combustion engine. Fatty acids exemplified are stearyl strearate and pentaerythrityl behenate or tetrastearate.
Patent GB-2238616-A (GB)
Title: Touch signal probe
Inventor: MARDAPITTA CONSTANTIA PETRIDOY
IPC: G01B17/00
Filed: 1990-10-18
Abstract: A touch signal probe for detecting a displacement of a stylus 25 is provided on a supporting member 23 which is continuously urged to a casing 21 by weak coil springs 27. A non-contacting type displacement detecting device 41 detects an attitude change of the supporting member. As shown, a ferrite magnet 43 co-operates with a magnetic displacement detecting device 41 and displacement signals are fed to a calculating apparatus having an alarm and a memory. In Fig 3 (not shown) a supersonic displacement detecting device (55) is employed and consists of a supersonic sending and receiving device 54. In Figs 4 & 5 (not shown) optical displacement detecting devices (63, 75) are employed consisting respectively of a light, mirror and receiver (61, 23A, 62) and light, transparent marked roof plate and receiver (72, 73, 74). In Figs 7 & 8 (not shown) electrical displacement detecting devices (121, 131) are employed consisting respectively of a piezo-electric actuator (124) and a magnet and coil (132, 133). <IMAGE>
Patent GB-2242102-A (GB)
Title: Interference cancellation system for radio receiver
Inventor: TALWAR ASHOK KUMAR
IPC: H01Q3/26
Filed: 1991-02-18
Abstract: The system is capable of cancelling two interfering signals received simultaneously from different directions and has an auxiliary antenna 66, a synchronous detector 72 and a signal controller 78 providing an interference cancellation signal for subtraction 82 from the signal output of a receiver antenna 60. The auxiliary antenna 66 has a non-zero phase relationship for the two interfering signals relative to the receiver antenna 60, and the auxiliary antenna 66 is faced apart from the receiver antenna 60 a predetermined distance so that the two interfering signals are received by the two antennas with a phase difference which is equal and opposite to that which is introduced by the auxiliary antenna. As a result, the two interfering signals are received in the interference cancellation system in the same phase relative to the receiver antenna and can both be cancelled. For example, using a loop type auxiliary antenna 86 having a null pointing in the same direction as that of the boresight of a directional receiver antenna 60, the spacing is  lambda /4 for two interfering signals which are at + 90 DEG  and - 90 DEG relative to the boresight of antenna 60. <IMAGE>
Patent GB-2241670-A (GB)
Title: Image forming equipment having interchangeable developing device and cleaning device
Inventor: HODOSHIMA TAKASHI
IPC: G03G21/00
Filed: 1991-02-20
Abstract: Image forming equipment having two identical image forming devices 33, 37 each functioning as a developing device when located in a developing position or as a cleaning device when located in a cleaning position. The image forming devices are alternately and repetitively set in the developing position and cleaning position. <IMAGE>
Patent GB-2243130-A (GB)
Title: Marine propulsion device
Inventor: MONDEK MARTIN J
IPC: B63H23/32
Filed: 1991-03-01
Abstract: In a marine propulsion device 10 having a power head (20 Fig 1) and a lower unit (24), a propeller shaft 32 is rotatably supported by the lower unit 24 and supports a propeller 50. The propeller shaft 32 includes a longitudinal axis 33 and a surface defining a plane which is substantially normal to the axis 33. A thrust washer 70 is mounted on the propeller shaft 32 for transmitting thrusting force from the propeller 50 to said surface. Such an arrangement provides particularly efficient transmission of thrust loads developed by rotation of the propeller without requiring expensive machining of frustoconical mating portions. <IMAGE>
Patent GB-2243225-A (GB)
Title: Composite electric and optical cable manufacture
Inventor: HOGG CLIVE LAURENCE
IPC: H01B9/00
Filed: 1991-04-09
Abstract: In a simple and inexpensive method of manufacturing a composite electric and optical cable incorporating a flexible tube having a flexible optical waveguide 6 loosely housed in the bore of the tube, the flexible electric cable 10, without a flexible optical guide loosely housed in the bore of the flexible tube 5, is wound around the hub of a cable drum 14 in such a way that each end of the wound cable is exposed and accessible. The flexible optical guide 6 is then accommodated in the bore of the flexible tube 5 of the wound cable 10 by introducing a leading end of the optical guide into the end of the bore of the flexible tube at one exposed end 11 of the wound cable and by propelling the optical guide along the bore of the wound cable by fluid drag of a gaseous medium which is passed through the bore in the desired direction of advance at such a pressure that the optical guide is carried along the bore until the optical guide is loosely housed in and throughout the length of the bore of the flexible tube of the wound cable. <IMAGE>
Patent GB-2245947-A (GB)
Title: A branch connector for connection between a main flexible pipe and a secondary flexible pipe with sleeve moulded in situ
Inventor: MOGAVERO CESARE
IPC: F16L33/00
Filed: 1991-06-28
Abstract: The connector (2) comprises a rigid, tubular insert (4) having a first end (6), a second end (8) and at least one third end (10), onto which the ends (12, 14, 16) of first and second branches of a main pipe (18) and of a secondary pipe (20) are fitted respectively, and a covering (24) of plastics material which encloses the ends (6, 8, 10) of the insert (4) and the ends (12, 14, 16) of the pipes (18, 20). The covering (24) has a continuous internal circumferential projection (26) in correspondence with each end (6, 8, 10) of the insert (4), the projections (26) being adapted to engage corresponding annular grooves (28), in the ends (12, 14, 16) of the two branches of the main pipe (18) and of the secondary pipe (20) so as to lock the pipes on the respective ends (6, 8, 10) of the rigid insert (4) and create liquid-tight seals. Covering (24) is mounded in situ from glass-filled polypropylene. <IMAGE>
Patent GB-2248732-A (GB)
Title: Locking connectors together: indicating full engagement
Inventor: INOUE NORI
IPC: H01R13/641
Filed: 1991-09-10
Abstract: A connector (3) includes a slide (1) biased away from its mating end by a spring (4) the slide being retained in a slideway (11) by latches (8). When the connector (3) is fully mated with its counterpart (2), the slide may be moved towards the counterpart so as to lock connector and counterpart together, for example by a further latch (7) of the slide engaging a keeper (6) of the counterpart (2). On incomplete coupling of the connector (3) and counterpart (2), the further latch (7) and keeper (6) do not engage and the slide returns under bias of the spring (4), thereby indicating the incomplete coupling. The slide may have contacts (17A, 17B, Fig. 10) which form part of a circuit for detecting correct coupling. <IMAGE>