baber/WOPTO huggingface dataset:
Patent GB-2048963-A (GB)
Title: In-line Colouration of Acrylic Fibres Using Bis-cationic Anthraquinone Dyes and Dyestuff Solutions Suitable Therefor
IPC: D06P3/70
Filed: 1980-04-15
Abstract: The process is for the colouration of wet-spun acrylic fibres and comprises contacting the fibres while they are in gel condition with a bis cationic anthraquinone dyestuff free from acidic water-solubilising groups which has the formula (I):   <IMAGE> in which Z is optionally substituted alkylene, Q<+> is a cationic group, A<-> is an anion, the floating -NH-Z-Q<+> group is in the 4-, 5- or 8-position of the anthraquinone nucleus and the benz rings A and B are optionally substituted. Aqueous dyestuff solutions which contain from 5 to 80% by weight of a dyestuff of formula (I) are used for this process. A preferred dyestuff has the formula (III):   <IMAGE>
Patent GB-2053087-A (GB)
Title: Power operated compass saw
IPC: B27B19/04
Filed: 1980-06-16
Abstract: A power operated compass saw has a blade (1) clamped at an upper end in a supporting structure. At its lower end the blade (1) has a taper (18) on the rear edge such that, on downward movement of the blade (1), the tapered edge engages with a roller (19) to be moved towards the material being cut. A spring (21) biasses the blade (1) against the roller (19). On its upward movement, the blade (1) is moved by the spring (21) free of the material as the taper (18) moves on the roller (19), thus preventing tearing of the teeth of the blade (1). The spring (21) also assists the drive motor during downward movement of the blade (1). <IMAGE>
Patent GB-2055441-A (GB)
Title: Ducting for under-floor cables and pipes
IPC: F16L3/26
Filed: 1980-07-15
Abstract: Ducting for under-floor cables and pipes, which can be keyed rigidly with the material (9) forming the floor without separate fastening, comprises a channel member (1) having a base (2) and upwardly-converging side walls (3) which define a channel with a dovetail-shaped cross-sectional profile. The free edges of the side walls (3) have flanges (4) which are parallel to the base (2) and receive a removable cover (5), the upper surface of which is coplanar with the floor surface (F-F). <IMAGE>
Patent GB-2060727-A (GB)
Title: Water marks
IPC: D21F1/46
Filed: 1980-09-12
Abstract: A paper-making apparatus incorporates a gauze for applying a water mark in a paper web, the gauze carrying, in one or more arrays, elements of two different kinds which produce corresponding elements in the water mark to represent respective binary digits in a binary number. In the preferred embodiment, the two different kinds of elements in the gauze are respectively elevations, representing binary '1' and depressions, representing binary '0', each depression and elevation having a profile corresponding to a scalene right angled triangle having its hypotenuse lying in the gauze surface and its other two sides 11, 12 inclined thereto. The elements in the gauze are arranged in a series extending along the gauze in the plane in which the profile referred to is defined, so that a symmetry of the profile of each element in the gauze, and the resultant asymmetry of the corresponding elements in the watermark, give an indication of the correct reading direction for the series of elements representing the binary number. <IMAGE>
Patent GB-2089887-A (GB)
Title: Charge intake valving in a four- stroke engine
IPC: F01L1/44
Filed: 1980-11-10
Abstract: A reed non-return valve 14 is located upstream of the inlet valve or valves 11 in a spark or compression ignition engine. <IMAGE>
Patent GB-2065751-A (GB)
Title: Deep water extractor
IPC: E02F3/92
Filed: 1980-12-11
Abstract: The invention provides a deep water excavating apparatus comprising an excavating tool 9 at one end of an arm 7 which is connected at its other end to a supportive body portion 1 provided with a pipe 5 associated with pumping means 6 for conveying excavated material to the surface. The invention also includes a method of excavating submerged materials, comprising operating an excavating tool positioned at one end of an arm which is in turn connected at its other end to a supportive body, conveying material excavated by said tool to a portion of a pipe mounted on said body, and pumping said material through said pipe to an opposite end thereof which is not submerged, said tool, arm and body all being submerged. By means of the invention, minerals such as tin may be recovered from deep water locations and offshore oil/gas production equipment may be protected from iceberg scour in cold regions by excavating protective chambers or holes therefor in the seabed. <IMAGE>
Patent GB-2070905-A (GB)
Title: Crop collecting apparatus
IPC: A01D41/14
Filed: 1980-12-19
Abstract: Crop collecting apparatus comprises a platform adapted for pivotal up and down movement about an axis that is located at the rear of the platform, the platform comprising a leading section (11) and a rear section (4) hinged together about an intermediate transverse axis (12) extending parallel to said rear axis, and actuation means (3) provided to pivot the platform about the rear axis so as to raise and lower the platform relative to the ground, support means (23) connected between the leading and rear sections (11, 4) of the platform so as to support the weight of the leading section and allow it to pivot within a pre-set angular range, sensor means (29, 30) that senses when the leading section (11) reaches the limits of the pre-set angular range, and control means (33, 34, 35) provided to control operation of the actuation means (3) in a manner dependent upon operation of the sensor means (29, 30) so that in use the leading section (11) pivots within said pre-set angular range and the whole platform is respectively raised and lowered when the leading section (11) reaches the upper and lower limits of said angular range of movement. <IMAGE>
Patent GB-2091422-A (GB)
Title: Weather Forecasting Device
IPC: G01L19/08
Filed: 1981-01-21
Abstract: A weather forecasting device 10 has a meter face, which has an atmospheric pressure indicating section 11 and a weather forecast indicating section 12. The atmospheric pressure indicating section 11 comprises a pointer 13 rotatable over a graduated scale 14. The weather forecast indicating section 12 comprises four lamps 15a, 15b, 15c and 15d, which represent four different types of weather forecast. The weather forecasting device comprises an aneroid barometer capsule 17 connected to a bell-crank 29 by a transmission lever 27. A resilient electrical changeover contact 38 is connected to a grooved pulley of the bell crank. The changeover contact 38 is movable between fixed contacts 42, 43 in response to changes in the atmospheric pressure. When the pressure rises contacts 38 ,43 close, illuminating lamp 15a to indicate fine weather. Continued rise in pressure causes relative rotation of pulley and movable contact 38 so that the instantaneous pressure is indicated by pointer 13 and the weather prospects by illumination of lamp 15a. When pressure falls contact 38 disengages contact 43 extinguishing lamp 15a and illuminating lamp 15c thereby indicating falling pressure (Figure 3). When contact 38 engages contact 42 lamp 15d, indicating rain is extinguished and lamp 15b indicating rising pressure is illuminated. Should the pressure now rise contacts 38, 42 are opened by lamp 15d. <IMAGE>
Patent GB-2074382-A (GB)
Title: A contact assembly for an electrical switch
IPC: H01H1/24
Filed: 1981-02-25
Abstract: A contact assembly for an electrical switch comprising two cooperating contact bodies 12 13, these being a first contact body 13 having a curved or domed contact face, and a second contact body which has running around it a substantially cylindrical helical spring 21 whose axis runs substantially at right angles to the direction of movement of the contact bodies towards and away from one another. The said second contact body (12) which is provided with the helical spring (21) has, at least in the region in which contact is to be made, a recess (14) of which the configuration is substantially or approximately complementary to that of the curved domed contact face (18) of the said first contact body (13). <IMAGE>
Patent GB-2095075-A (GB)
Title: Empty slot communications ring
IPC: H04L12/43
Filed: 1981-03-13
Abstract: In an empty slot communications ring a station seizes an empty slot and sends a data packet comprising a start bit S followed by a monitor bit M, the full or empty designator bit F, a destination address DADD, a source address SADD, control bits C, a data field DATA, a parity bit P and reply bits R. The station then awaits return of the transmitted packet with the reply bits modified by the receiving station. At high transmission rates e.g. a bit rate of 100 MHz, there arises the problem of insufficient time for the receiving station to derive the modified reply bits. This is overcome by adopting the convention that the reply bits for any packet are always the reply bits R of a subsequent packet, for example the packet in the next following slot.
Patent GB-2074356-A (GB)
Title: Passive Electro-Optic Display Cell
IPC: G04G9/00
Filed: 1981-03-31
Abstract: A passive electro-optic display cell comprises a layer of passive electro- optic material, e.g. liquid crystal (4), between two parallel plates (1, 2), on the inner face of each of which is a set of control electrodes (7, 11) and a screen-electrode (9, 13) separated by an insulating layer (8, 12). The screen-electrodes (9, 13) and the insulating layers (8, 12) are apertured (10, 14) opposite the corresponding control electrodes (7, 11), allowing alternative or simultaneous display of two sets of information contained in the control electrode-screen combination on the respective plates, the display being either positive or negative. <IMAGE>
Patent GB-2091654-A (GB)
Title: A Vehicle having Worm and Worm-gear Steering
IPC: B62D49/06
Filed: 1979-01-29
Abstract: A vehicle having four-wheel steering has four wheels 444 each pivotally mounted about a generally vertical axis for steering movement, a worm-gear 412,414,416 and 418 respectively being mounted on the shaft supporting the wheel assembly. Each worm-gear has a worm 404,406,408 and 410 respectively associated therewith, two worms being provided on each of two worm- shafts 400 and 402 respectively. A chain 430 passes round sprockets provided on the shafts 400,402 and round a sprocket mounted on a steering column 432. Each worm-gear comprises a gear segment mounted on the associated shaft so that its centre of curvature is offset from the shaft axis. This produces a differential rate of rotation of the worm-gear shaft with respect to rotation of the worm shaft, and the arrangement is such that the inside wheels on turning a corner move through a greater angle than the outside wheels, to ensure proper tracking. The steering arrangement may be modified to effect steering of one pair of wheels only. The vehicle may be in the form of a multi-purpose vehicle having four wheel drive and steering, suitable for use inter alia as a tractor. <IMAGE>
Patent GB-2077482-A (GB)
Title: Coolant system decontamination
IPC: G21F9/28
Filed: 1981-05-28
Abstract: An improved method for decontaminating the coolant system of water- cooled nuclear power reactors and for regenerating the decontamination solution. A small amount of one or more weak-acid organic complexing agents is added to the reactor coolant, and the pH is adjusted to form a decontamination solution which is circulated throughout the coolant system to dissolve metal oxides from the interior surfaces and complex the resulting metal ions and radionuclide ions. The coolant containing the complexed metal ions and radionuclide ions is passed through a strong-base anion exchange resin bed which has been presaturated with a solution containing the complexing agents in the same ratio and having the same pH as the decontamination solution. As the decontamination solution passes through the resin bed, metal- complexed anions are exchanged for the metal-ion-free anions on the bed, while metal-ion-free anions in the solution pass through the bed, thus removing the metal ions and regenerating the decontamination solution.
Patent GB-2084290-A (GB)
Title: A vibration damper with inertia mass
IPC: B60K17/22
Filed: 1981-09-22
Abstract: A vibration damper for a drive shaft of a motor vehicle has a support ring 13, an elastomeric connecting element 11, and a mass ring 9, which lie co-axially and are bonded together solely in transverse planes. The external diameter of at least the support ring 13, and the elastomeric connecting element 11, are substantially equal. The relative rotary and radial displacement between the mass ring and support ring is limited by stop pins 24 (or screw heads 25) which extend parallel to the axis of the rings, are secured to one of the rings and pass with clearance through the other. <IMAGE>
Patent GB-2085607-A (GB)
Title: Enlarging from Scratched Originals
IPC: G03B27/54
Filed: 1981-10-13
Abstract: In an enlarger for printing from a transparent original 12 on photosensitive material 13 and comprising light sources 1 & 5, filters 3 & 7, light-blending element 4, condenser 8/9 and objective lens 11, the image of element 4 in the plane of lens 11 is not substantially outside the range of lens 11 and a supplementary light source or sources 15/16 forms an image in the plane of lens 11 but outside the range thereof. Scratches on original 12 do not show up on the resulting print. Light-screening means is situated between the primary and supplementary light sources, which may have different colour temperatures. The supplementary light source(s) may be fluorescent, filament or electronic flash. Two straight electronic flash tubes (Fig. 2) or a single electronic flash tube in the form of an open ring (Fig. 3) may be employed. <IMAGE>
Patent GB-2105651-A (GB)
Title: Multi-layer polypropylene film
Inventor: SHIGA AKINOBU
IPC: B32B27/32
Filed: 1981-12-14
Abstract: A multi-layer polypropylene film having good heat sealing and anti- blocking properties comprises a crystalline polypropylene film layer and a crystalline propylene/ alpha -olefin or crystalline propylene/ alpha -olefin/ethylene copolymer layer containing 10 to 30% weight of a C4-C18  alpha -olefin, 0 to 5% by weight of ethylene, and 10% by weight or less of a 20 DEG C xylene- soluble polymer.
Patent GB-2093332-A (GB)
Title: Passive safety belt system
IPC: B60R22/04
Filed: 1982-01-05
Abstract: A passive safety belt system has a lap element 14, a diagonal element 16 and a common element 20 interconnected by a ring 18. First puller means 30 is connected to the shoulder element 16 at 32 and then runs through the ring 18 and a second ring 34 which is slidable on the common strap 20. The other end of the first puller means 30 is connected to a traveller 36 on a track 38. Second puller means 46 has one end connected to the second ring 34 and then runs through the traveller 36 to a spool 48 coupled to a spindle of a retractor 28 for the common element 20,50 as to pay out the second puller means as the common strap is wound in. The effect of this is to move the point of action of the first puller means 30 nearer to the centre of the car without interfering with retraction of the common strap 20 on to the retractor 28. <IMAGE>
Patent GB-2094594-A (GB)
Title: Apparatus for varying the dynamic range of a signal
IPC: H03G7/00
Filed: 1982-01-27
Abstract: In a signal expander, the envelope of an input signal (S1) to be expanded is detected (30) and applied as a control signal (S3) to the gain control input (18) of a variable gain device (14) which expands the input signal. The control signal is applied to the variable gain device via an adaptive filter (40) having improved ripple reduction and transient performance characteristics to minimize audibility of gain changes. The adaptive filter includes a low pass filter (50,52) for producing a smoothed control signal essentially free of ripple and an analog gate (70,74,78) for coupling the greater of the smoothed signal or a further signal to the variable gain device, the further signal being equal to the detector output signal less a constant. Compression of an input signal is provided by applying the input signal to the non-inverting input (110) fig 3 not shown of an amplifier (100) and feeding the (compressed) output signal (S1) of the amplifier to the expander (30,40, 14) and feeding the output signal (S2) of the expander to the inverting input of the amplifier (100). <IMAGE>
Patent GB-2109234-A (GB)
Title: Quaternary ammonium salts as bactericides for controlling sulfate-reducing bacteria
Inventor: OPPENLAENDER KNUT
IPC: C02F1/50
Filed: 1982-09-27
Abstract: Compounds of the formula   <IMAGE>  where  R<1> is C8-C16-alkyl, R<2> and R<4> are identical or different and each is C1-C7-alkyl, C2-C7-alkenyl or benzyl,  R<3> is H, CH3 or C2H5,  X<(-)> is halide, methosulfate or tosylate and n is 1, 2, 3 or 4, are useful as bactericides for controlling sulfate-reducing bacteria, which occur for example in sulfate-containing process water in the petroleum industry.
Patent GB-2130484-A (GB)
Title: Button fixing apparatus
Inventor: MAKEPEACE JOHN WILFRED
IPC: B68G7/08
Filed: 1982-11-19
Abstract: Apparatus for fixing a button to an upholstered article, comprises a tube (5) which in use is passed through an outer cover (2) and through padding (3) of the upholstered article, anchor means (9) adapted to receive an anchor cord (10) and to fit within the tube (5), and a sliding member (12) slidable within the tube (5) for pushing the anchor means (9) with the cord (10) attached, through the tube (5) to a position behind the padding (3) from which the tube (5) and the sliding member (12) can be withdrawn, so as to leave the anchor means (9) positioned behind the padding (3) with the cord (10) extending therethrough to be accessible externally of the outer cover (2) for attachment thereto of a button. <IMAGE>
Patent GB-2133625-A (GB)
Title: Electrical switch
Inventor: FLUESTER J F
IPC: H01H13/702
Filed: 1982-12-15
Abstract: A tactile switch has first and second (typically upper and lower) membranes 10, 12 bearing conductive tracks 16, 18 and if required are separated by a spacer 14, apertured in a contact closure region (typically below a keyboard) where the tracks 16, 18 are formed with contacts 20, 22. The membrane assembly 10, 12, 14 seats on a moulded deck which has a depression 28 aligned with the switch, thus providing for overtravel after predetermined displacement necessary to close the contacts has been effected either by direct manual depression in the membrane or via a button or key. In a modification, instead of providing a depression in the deck or in a layer overlying the deck, depressions in the form of raised bubbles eg 38, 40 (Figure 3, not shown) are formed in the first and second membranes, the bubble in the lower membrane providing the required overtravel for the key. Ridges 60 (Figures 5 and 6, not shown) in one or both membranes may be used to house and protect the tracks to prevent "crossing" tracks from making contact. <IMAGE>
Patent GB-2132816-A (GB)
Title: Quartz oscillators
Inventor: KUNG-CHAO TUNG
IPC: H03H9/10
Filed: 1982-12-23
Abstract: In a quartz oscillator and method of making the same, a quartz oscillator has a glass housing (4) and a glass cover portion (2) bonded together so as to enclose the quartz member (1), with a pair of electrical leads (21) connected to the quartz member and projecting through the cover. The bonding is carried out in a vacuum chamber and a pump is employed to remove air from the glass housing. The bonding may be by gluing, infra-red thermal welding or laser thermal welding, to form a hermetic seal. The assembly may be conducted on a large scale by inverting a plurality of housings into a support. The end of the quartz member, or of the electrical leads, may be glued to the inside of the end of the glass housing. <IMAGE>
Patent GB-2119419-A (GB)
Title: Provision of a helical thread on a rope or cable
Inventor: ECKHARDT WILHELM
IPC: F16H25/24
Filed: 1983-04-21
Abstract: A method of providing a helical thread on a rope or cable (3) comprises initially winding a helical coil (1 or 2) to have an internal diameter which is somewhat greater than the external diameter of the rope or cable (3). The coil is then cut to the desired length and pushed onto the rope or cable up to a predetermined place. Thereafter, the coil is pressed fast onto the rope through external force at this place. <IMAGE>
Patent GB-2122010-A (GB)
Title: Automatic depositing/ dispensing apparatus
Inventor: WATANABE YOSHIHIRO
IPC: G07D9/00
Filed: 1983-06-09
Abstract: In an automatic depositing/dispensing apparatus (1), a plurality of note storage sections (14, 15, 16) is provided in a housing (6) each storing deposited notes (P) of a denomination and includes first and second notes storage sections (15, 16) for storing first and second denomination notes (Pa, Pb) available for dispensation and a third note storage section (14) for storing third denomination notes (Pc) unavailable for dispensation. One sorting gate (33c) corresponding to the third note storage means (14) leads thereto both those note (Pc) which are judged to be of a denomination unavailable for dispensation as a result of denomination detection for the deposited notes by a judgment section (30), and those notes which are judged unfit by the fit/unfit detection for notes to be dispensed. <IMAGE>
Patent GB-2123517-A (GB)
Title: Pressure vessels
Inventor: STEWART DUNCAN ROSS
IPC: F16J10/02
Filed: 1983-07-13
Abstract: A pressure vessel has a hollow member (10), an end closure (19) in telescope relationship with the hollow member, flexible continuous means (26) extending around the end closure and operatively connecting the closure and the hollow member, a passage for insertion and withdrawal of the continuous means, a removable plug closing said passage for resisting removal of the continuous means, and annular seals (24, 25) between the hollow member and the end closure on both sides of the continuous means, so as to isolate the continuous means from the environment and the interior of the vessel. The continuous means may be a length of wire spring and the pressure vessel may be a valve actuator. The plug may have a head shaped for engagement by a tool and may be wholly in the passage to prevent adventitious removal. <IMAGE>
Patent GB-2144334-A (GB)
Title: Combination venturi jet and exhalation valve assembly
Inventor: BIRD FORREST M
IPC: A61H/
Filed: 1983-08-05
Abstract: A jet ventilator (816) comprises a main body (817) with a passage (818) having an patent port (823), an expiratory port (819) and an entrainment port (848). The passage (818) is closed off by a cap (858) having a jet inlet (864). A diaphragm (861) extends across the passage (818). A body (826) having a venturi-like passageway (833) is slidably mounted in the passage (818). A nozzle (851) provides communication between the inlet (864) and the venturi-like passageway (833) and is connected to the venturi body such that when gas is supplied to the inlet, the venturi body (826) is caused by the pressure on the diaphragm (861) to move to a position against seat (838) against the action of a spring (841). <IMAGE>
Patent GB-2136419-A (GB)
Title: Preparation of meta-isopropylphenol
Inventor: OLAH GEORGE ANDREW
IPC: C07C37/14
Filed: 1983-11-24
Abstract: Resorcinol is prepared by an improved process through superacid (such as perfluorinated alkanesulfonic acids of one to eighteen carbon atoms or polymeric perfluorinated resinsulfonic acids, such as Nafion-H catalyzed cleavage-rearrangement reaction of meta-isopropylphenol hydroperoxide in the form of its protected ether or ester derivatives, including readily cleavable and reusable trimethylsilyl and trifluoromethanesulfonyl derivates. Part of the process is the preparation of needed meta-isopropylphenol in high purity free of other isomers by treating any mixture of isopropylphenol isomers in an excess of anhydrous hydrogen fluoride or a perfluorinated alkanesulfonic acid of one to six carbon atoms and a Lewis acid fluoride or by alkylating (transalkylating) phenol with a propyl alkylating agent in the presence of the aforementioned superacid systems.