baber/WOPTO huggingface dataset:
Patent GB-2056797-A (GB)
Title: Earth leakage protection devices
IPC: H02H3/33
Filed: 1980-05-20
Abstract: An earth leakage protection device comprises a core balance current sensing transformer 1 having a secondary winding 2 in which a fault signal is generated in response to leakage from AC supply lines forming primary windings of the transformer 1, an operational amplifier 7 for amplifying the fault signal, a precision rectifier circuit 8 comprising a pair of operational amplifiers for performing full wave rectification of the amplified fault signal, delay means 9 in the form of a two stage RC network which delays the rectified signal according to an IDMT characteristic, and a trigger circuit 10 in which the delayed signal is compared with a preset reference signal by an operational amplifier to provide a control signal which actuates a safety device in the AC supply lines via a relay 11 when the reference signal is exceeded. Within its operating range the device actuates the safety device much more slowly for lower leakage currents than for higher currents, and since it is operative on both halves of the AC leakage current signal the device provides reliable protection against the possibility of dangerous electric shocks while avoiding spurious tripping. <IMAGE>
Patent GB-2071106-A (GB)
Title: Water-permeable foamed polymer sheets
IPC: C08J9/30
Filed: 1980-05-27
Abstract: Water vapour-permeable sheet materials, particularly useful in the footwear industry, which are resistant to wear, water resistant and mechanically stressable are made by mechanically foaming a polymeric dispersion, the mechanical foaming being carried out in the presence of a surfactant, the density of the film being adjusted by the mechanical foaming to 0.55-0.85 g/cm<3>, gelling the foamed dispersion at a temperature of 120 to 220 DEG C, for at most 10 minutes, and finishing the sheet material by spraying and/or rastering. The polymeric dispersion may comprise vinyl chloride homopolymer, or copolymer with vinyl acetate, dispersed in a plastisol.
Patent GB-2056271-A (GB)
Title: Improvements in or relating to floor mats of the washable, dirt adsorbing type
IPC: D06N7/00
Filed: 1980-06-19
Abstract: Floor mats of the washable, dirt adsorbing type, so-called "service mats", consist of a rubber backing and a nap top layer vulcanized to the top side of the backing such that the outer edge portion of the backing constitutes a frame portion about the nap layer. The mats are produced either as strong "utility mats" based on a black rubber backing or as "appearance mats" based on a backing of coloured rubber. According to the invention a "utility mat" is provided which is additionally an "appearance mat", the said frame portion of the black rubber backing being constituted or covered by a layer of coloured rubber. The two types of rubber are vulcanized together. The coloured rubber and even the black rubber may be reinforced by admixture with synthetic fibres. <IMAGE>
Patent GB-2058695-A (GB)
Title: Vehicle exterior mirror
IPC: B60R1/06
Filed: 1980-09-10
Abstract: A vehicle exterior mirror has a cowl 2 which is spaced at its forward edge from the edge of the mirror to define a slot 4. The slot extends around the entire circumference of the mirror. Apertures 5 at the rear of the cowl communicate with the slot 4. In use of the vehicle, air passes into the apertures and out through the slot, and this air stream tends to carry spray away from the surface of the mirror. Hitherto, fouling of the mirror occured due to a reduced pressure region created in front of the mirror in use. <IMAGE>
Patent GB-2062381-A (GB)
Title: Circuit arrangements for controlling electrical loads
IPC: F02P19/02
Filed: 1980-09-26
Abstract: A circuit arrangement, preferably for the monitoring of glow plugs of internal combustion engines, which switches off a relay (12) in the glow plug circuit in the event of an overcurrent due to a short-circuit or leakage at the glow plugs and in the event of over-voltage, comprises a first comparator (26) whose input is connected to a current measuring shunt resistor (15a) located in the glow plug circuit (19), and a second comparator (31) whose input is connected to the supply voltage. The outputs (27, 34) of the two comparators are connected firstly to the input (50) of a switching circuit (28) for the relay (12), and secondly to a holding circuit (36). The relay is switched off by way of the switching circuit upon the response of one of the two comparators, and the holding circuit which then responds ensures that the relay remains switched off until an operating switch (30) is opened. <IMAGE>
Patent GB-2059385-A (GB)
Title: Breakage indicator
IPC: G09F3/04
Filed: 1980-09-29
Abstract: To provide a way of indicating that a frangible article has been broken an annular element 5 is provided around a part of the article which has a smaller cross-section than adjacent parts on either side, whereby the element can only be removed intact if the part or one of the adjacent parts is broken. <IMAGE>
Patent GB-2064159-A (GB)
Title: Optical viewing apparatus having catadioptric lens system
IPC: G02B23/12
Filed: 1980-10-24
Abstract: Optical apparatus for biocular viewing of relatively low cost and light weight comprises a solid Cassegrain configuration in a solid meniscus element (4) having a negative lens element (3) cemented to its convex face and an associated corrector lens element (7) which provide a magnified collimated image of an object (2) for viewing by a pair of telescopes (8, 9, 10) having light folding means (11, 12) to provide an exit pupil separation suitable for two eye viewing. At least some of the lens elements may be of plastics material and aspheric surfaces may be employed. The apparatus is particularly useful for night vision goggles having a single image intensifier tube (1). <IMAGE>
Patent GB-2064685-A (GB)
Title: Friction Gears
IPC: F16H49/00
Filed: 1980-11-19
Abstract: A harmonic drive friction gear comprises a cam-shaped body of rotation 3 connected to a drive shaft (1), and a rolling bearing having a resiliently deformable outer race 9 and inner race 8, with the inner race 8 resting against the body of rotation. A hollow deformable inner cylinder 11 connected to a driven shaft is disposed concentrically with the outer race 9 and lies against the outer race. A non-rotatable, but deformable, hollow outer cylinder 12 is disposed concentrically with the inner cylinder 11 and lies against its outer surface, such that the inner cylinder 11 presses against the outer cylinder in the cam region of the body of rotation 3. <IMAGE>
Patent GB-2066211-A (GB)
Title: Apparatus for rescuing people in danger from a multi-storey building or the like
IPC: A62B1/02
Filed: 1980-12-08
Abstract: Apparatus for rescuing people in danger from a multi-storey building comprises at least one guide rail (4) to be fixed on an external facade of a building, a rescue cabin (32) to be mounted on the guide rail (4) and means to enable the cabin, when the apparatus is installed, to be reached from windows or other exits of the building that are not immediately adjacent to the cabin. One way of achieving this is by providing gangways (42, 43) which can extend from the cabin sideways along the face of the building. Another way of achieving the same object is to support the upper and lower ends of the rail (4) in devices which are horizontally displaceable to the external facade of the building to allow the cabin to be shifted sideways as well as up and down. <IMAGE>
Patent GB-2068027-A (GB)
Title: Top spring for sewing machine foot bar
IPC: D05B29/00
Filed: 1981-01-26
Abstract: An attachment for mounting on a sewing machine comprising a platform 2 mounted on a member, a, of the machine, a leaf spring 4, being mounted at one end on the platform and at the other end engaging a nylon plunger, 6b, passing through a bush, 6, in the platform to engage the upper end of a foot-bar, 1, to apply pressure to the foot, 1b. A second bracket 7 is mounted on the platform with a stud passing through a transverse member of the second bracket to apply tension to the leaf spring, 4, in order to vary the pressure on the foot for high speeds of 2,500-3,000 r.p.m. <IMAGE>
Patent GB-2086003-A (GB)
Title: Vibratory Feeder
IPC: F16F7/00
Filed: 1981-04-28
Abstract: A vibratory feeder comprises a feeder plate 2 resiliently mounted on a base. The plate oscillates, in operation, back and forth on its mountings under the pull of an electromagnetic drive motor. The oscillations of the plate, and any parts moving therewith, are counterbalanced by those of a mass 4 equal to that of the plate. The mass is mounted on the base via mountings 5 whose resilience is identical to that of the plate mountings 3, and oscillates in phase opposition to the oscillating plate. The force exerted by the drive motor on the plate is independent of the position of the plate during oscillation. The plate may oscillate linearly or rotationally: in the first case, the centres of mass of the plate m and the counterbalance m' lie on the same line of movement, whilst in the second case the moments of inertia of the plate and the counterbalance about the centre of rotation are equal. <IMAGE>
Patent GB-2100104-A (GB)
Title: Agricultural tiller
IPC: A01B1/08
Filed: 1981-06-11
Abstract: The invention entitled the "TILLER" is a relatively simple design of an agricultural implement, comprising three parts or sections, namely, a BLADE, a 'NECK' and a HANDLE, its purpose being to till or plough the soil manually, during which, the user is able to stand in an upright position. There are two principal features to which special attention has been given in the design of the tiller. These are; (1) The BLADE, which can be detached and replaced with another of similar or smaller size, thereby allowing a choice for soil conditions. (ii) The 'NECK' which is bolted to the inner side of the blade, and is curved upwards to a height that enables the upper handle to be in line with the average user's waist. This permits him to perform a comparatively lengthy task, as very little stress is exerted on the back, as for example, the back-breaking stress experienced when in a crouching position. <IMAGE>
Patent GB-2092905-A (GB)
Title: Vacuum belt filter
IPC: B30B9/10
Filed: 1981-10-30
Abstract: An endless filter belt 21 is moved first over a suction box (16, Fig. 1), where slurry is fed on to the upper surface of the belt, and then over a drainage grid 46 which is intermittently raised by inflating a bag 42 to press the filter cake on the belt upwards against stationary pressure plate 53 for further de-watering. The grid 46 has parallel grooves in its top surface which intersect with further parallel grooves in its under-surface, to permit suction to be applied by way of a suction pipe 146 and drain duct 45. The belt 21 is intermittently moved, but the arrangement could be such that the belt moves continuously and the grid 46, bag 42 and pressure plate 53 move intermittently forwards in contact with the belt while applying pressure to the filter cake and then backwards out of contact with the belt. Pressure plate 53 is of polypropylene or PTFE-coated metal so as not to stick to the filter cake. <IMAGE>
Patent GB-2112520-A (GB)
Title: Vehicle manoeuvring aid
Inventor: HEYES ANTHONY DAVID
IPC: G01S15/931
Filed: 1981-11-18
Abstract: The vehicle manoeuvring aid is an ultra-sonic pulse echo device with an audible output display, the prime function of which is to provide information to the driver of a reversing vehicle. The distance to the nearest obstacle is displayed by means of bleeping tones the pulse repetition rate of which depends on the particular range zone in which the obstacle lies. In order to provide adequate cover for the whole width of the vehicle three pairs of ultrasonic transducers 50 are used. The serious problems of interference and diffraction caused by the overlap of the ultra-sonic beams is removed by having the receivers scanned sequentially and by alternating the phase relationship of the transmitters. Each cycle of operation comprises scanning each receiver twice, once with the central transmitter in-phase with the other two, and once with it out-of-phase. This whole cycle takes place in a time which is short compared to human reaction times. The result obtained is stored for display during the next scan cycle. <IMAGE>
Patent GB-2100270-A (GB)
Title: Maleic anhydride copolymer membranes
IPC: C08L101/00
Filed: 1982-03-18
Abstract: A polymeric membrane having maleic anhydride residues which comprises a blend of a maleic anhydride copolymer and a support polymer, said blend being partially cross-linked with a bifunctional cross-linking reagent. When hydrolyzed, this membrane turns into an ion exchange membrane or a membrane on which an enzyme is immobilized.
Patent GB-2119238-A (GB)
Title: Improvements in and/or related to twin-wheel casters for furniture
IPC: B60B33/00
Filed: 1982-04-23
Abstract: The caster comprises a cap shaped body on the interior whereof a boss member (6) extends constituting a central support for a pin (10) carrying two idly rotatable wheels (18, 19) arranged at either sides of the boss (6), the pin opposed ends protruding beyond the respective wheel (18, 19) and engaging in seats (23, 24) formed on the inside of the cap member (2). <IMAGE>
Patent GB-2101956-A (GB)
Title: Packaging bottles of liquified gas
Inventor: WENDLING JEAN
IPC: F17C13/08
Filed: 1982-05-13
Abstract: Domestic gas bottles (15) are stacked in layers with intermediate inserts (20, 21) resting on protective caps of the bottles and a tray (23) resting on top. The base layer rests on a pallet (26), and the assembly is maintained by hoops (25) and a heat shrunk sleeve (22). In the case of elongate bottles of larger capacity only a single layer of upstanding bottles is arranged on the pallet. <IMAGE>
Patent GB-2123619-A (GB)
Title: Retention of cables or the like
Inventor: IZATT JACK
IPC: F16L3/04
Filed: 1982-06-26
Abstract: A cable 10 is secured on a printed circuit board 1 which has two spaced holes 2, 3 and underneath which is positioned on plastics moulding 4. One end of a tie wrap 9 is passed through one of the holes and is guided through the passageway 8. The end of the inserted tie wrap 9, emerges from the other hole and the tie wrap 9 is then secured around the cable. The cable is attached to the board in a single-sided operation for which access is necessary only from one side of the printed circuit board. <IMAGE>
Patent GB-2107074-A (GB)
Title: Hydrazide compositions, methods employing them and photographic materials containing them
Inventor: MAGEE PAUL M
IPC: G03C1/485
Filed: 1982-09-02
Abstract: A hydrazide composition comprising both a nitrogen-containing heterocyclic group substituted phenyl hydrazide and a thiourea substituted phenyl hydrazide is useful as a nucleating agent in both direct reversal and negative, e.g. lith, photographic silver halide emulsions.
Patent GB-2107767-A (GB)
Title: Pile driver
Inventor: SINCLAIR ALASTAIR AITKEN
IPC: E02D7/20
Filed: 1982-10-05
Abstract: A method and apparatus for driving piles in which a pressure differential is created between the interior and exterior of a vessel 1 by evacuation of the vessel. The vessel bears against the pile and thus transfers the driving force to the pile. The pile may be driven in a desired attitude by providing separate chambers 4 in the vessel 1 and evacuating the chambers 4 selectively or simultaneously in response to local soil resistance. <IMAGE>
Patent GB-2113658-A (GB)
Title: Container for video cassettes
Inventor: CLARK TERENCE
IPC: B65D6/06
Filed: 1982-11-02
Abstract: A container comprises an outer cover designed to resemble a book but being open at a region 13 thereof opposite to the spine 10 and an inner sleeve adapted to be received within the outer cover through said opening to provide a sliding fit within the cover, said inner sleeve being closed at the end which is outermost when the sleeve is located within the cover and being shaped and dimensioned to receive a video cassette. <IMAGE>
Patent GB-2122346-A (GB)
Title: Combined thermometer-fire alarm device
Inventor: HARA DAIYU
IPC: G01K5/72
Filed: 1983-01-20
Abstract: The device comprises a helical bimetallic temperature sensor; a pointer connected to said sensor so as to be movable in response to the expansion and contraction of said temperature sensor caused by changes in the ambient temperature, whereby the pointer provides a visual indication of said ambient temperature; a switch mounted adjacent the path of movement of said pointer at a position corresponding to a predetermined elevated temperature and actuable by means carried by said pointer when it moves to said position; and an audible alarm activated by actuation of said switch, thereby to provide an audible warning that said predetermined temperature has been reached. As disclosed, the pointer carries a magnet which operates a reed switch mounted on the rear face of a dial 1. A circuit activates a buzzer when a battery for the alarm drops below a certain voltage output. <IMAGE>
Patent GB-2114002-A (GB)
Title: Improvements in or relating to fungicides
Inventor: DEVOISE-LAMBERT ANDRE
IPC: A01N57/12
Filed: 1983-01-24
Abstract: The present invention relates to the use of a compound a), an oomycetes controlling fungicide having the structure element of formula I   <IMAGE>  in which X is CH or N, in association with a compound b), selected from CYMOXANIL and Phosetyl-Al in combatting or preventing fungal diseases, and fungicidal composition comprising such compounds.
Patent GB-2135021-A (GB)
Title: Rectangular piston for pneumatic vibrator
Inventor: WESTWOOD JAMES ALFRED
IPC: F16J10/02
Filed: 1983-02-04
Abstract: A piston and working chamber arrangement, for example for a pneumatically operated vibrator, wherein the working chamber (11a, 11b) is rectangular in cross-section over at least that part of its axial length along which a piston (20) of corresponding cross-section is disposed to slide. <IMAGE>
Patent GB-2117167-A (GB)
Title: Cuing device for pickup arm
Inventor: SHIOZKI HIROSHI
IPC: G11B3/085
Filed: 1983-03-11
Abstract: A cuing device moves a pickup arm up and down stably at a constant speed. When the pickup arm is to be moved upwardly, a movable member is driven upwardly or a rotor is rotated each by a drive coil while the current through the drive coil is controlled by a difference between a preset voltage and a voltage induced in a sensor coil, which induced voltage is proportional to the movement of the movable member and effects a braking effort on it. When the pickup arm is to be moved downwardly, the movable member is moved downwardly by gravity or the rotor is rotated while being braked by an upward force or a rotating force each originating from a voltage which is induced in the sensor coil. Thus, the braking effort allows the pickup arm to gradually move up and down at a constant speed. <IMAGE>
Patent GB-2120430-A (GB)
Title: Zeroizing of counters
Inventor: BITETTI RODOLFO
IPC: G01C22/00
Filed: 1983-04-29
Abstract: A device for zeroing the numerical indication given by an odometer cylinder of a speedometer, the said cylinder including a plurality of coaxial discs (2) disposed adjacent one another, and being rotatable on a spindle (5) under the action of transmission means operable to cause each said disc to rotate by a predetermined angle when one of the contiguous discs has performed a complete revolution is described; the rotation of the said spindle with respect to the disc is controlled by means of a rack (21) and pinion assembly (20, 25), and between one element of the said rack and pinion assembly and the said spindle there is located a clutch (30) operable to transmit movement from the rack to the said spindle when the rack is displaced axially in a first directional sense to effect rotation of the said spindle with respect to the disc and not to transmit movement from the said rack to the said spindle when the rack is displaced axially in a second directional sense opposite the first. <IMAGE>
Patent GB-2147934-A (GB)
Title: Improvements in the construction and maintenance of cavity walls
Inventor: JAYCOCK JOHN RONALD
IPC: F16B13/14
Filed: 1983-06-29
Abstract: A replacement cavity wall tie 4 and a method for installing the same are described. The tie 4 is tubular and has outwardly flared end parts 7. In use the tie 4 is located in passages 5 and 6, formed in the back wall 1 and the front wall 2 respectively of a conventional cavity wall, and bridges the cavity 3 between the walls 1 and 2. The tubular tie 4 and the annular spaces 8 between said tie 4 and the walls 1 and 2 are filled with an epoxy resin A, which acts to rigidly fix the tie 4 in place. Holes 9 and 10 are formed in the tie 4 to allow the epoxy resin, which is introduced by being pumped into the tie 4, to flow into the spaces 8. <IMAGE>
Patent GB-2129677-A (GB)
Title: Chair
Inventor: BRAUNING EGON
IPC: A47C1/024
Filed: 1983-10-21
Abstract: The work chair is provided with a backrest support (13) which is connected movably to the seat shell (4) or respectively to a base plate (10) stiffening the latter, for the purpose of individual adjustment of inclination, and is flexible in terms of bending along its vertical extension and the contour curve of which, under load, essentially approximates to the curve of the human spinal column. The inclination of the backrest can be fixed by means of a locking arrangement (14) which consists essentially of a pawl (16) which is spring-loaded (20) and of an engagement toothing (17) provided at the lower end of the backrest support (13).
Patent GB-2144867-A (GB)
Title: Multicolor image-forming method and multicolor image-forming materials therefor
Inventor: MINO HISASHI
IPC: G03C5/00
Filed: 1984-07-23
Abstract: A multicolor image-forming method and a multicolor image-forming material applied to the same, are disclosed employing a heat transfer photosensitive material comprising a transparent substrate and a colored layer, which is soluble in water but insolubilizable by light, coated on the transparent substrate with a heat-fusible and bondable intermediate layer therebetween.
Patent GB-2150384-A (GB)
Title: Locating a feature of an object
Inventor: BOIE ROBERT ALBERT
IPC: H04N5/14
Filed: 1984-09-19
Abstract: The video output of a camera 120 viewing an object 110 is connected to an edge finding circuit 130 and a centroid finding circuit 140. Each of these produces an output which crosses zero at a time corresponding to the edges of the object occurring in the video signal (130) or to the average of these (140). An edge is assumed to occur when the video signal crosses its median value, it is alleged that problems due to variations in illumination and gradual changes in signal level are overcome by this technique. <IMAGE>
Patent GB-2148827-A (GB)
Title: Conveyor apparatus
Inventor: PARK DAVID B
IPC: B65G21/22
Filed: 1984-10-10
Abstract: A conveyor mechanism comprises a fixed rail oriented for example in helical fashion to present straight side portions and curved end portions. The rail forms first and second pairs of second support surfaces (26, 32 and 28, 30). A conveyor chain is mounted on the rail and includes first and second pairs of freely rotatable support wheels (46-52) arranged to engage the first and second pairs of support surfaces, respectively, to form pairs of interfacing planes therewith. The planes of each pair of interfacing planes form therebetween an included angle (AD, BC) of less than 180 DEG , preferably 90 degrees. The wheels engage the support surfaces exteriorly of those included angles. The support surfaces disposed along the side and end portions of the helix are straight and curved in cross-section respectively. A plurality of product-supporting carriers (80) are mounted to the conveyor chain. A plurality of trays are connected to the chain and are situated between the carriers and the chain to catch droppings from the product being conveyed. The trays comprise rigid plates which overlap at their adjacent ends. Pan guides (190) are releasably attachable to the trays for providing lateral stability for pans carried by the conveyor. <IMAGE>