baber/WOPTO huggingface dataset:
Patent GB-2030262-A (GB)
Title: Rack and pinion steering mechanism
IPC: B62D3/12
Filed: 1978-09-27
Abstract: In a rack-and-pinion steering mechanism, the pinion (3) has a first set (4) and a second set (5) of pinion teeth and the rack (1) has rack teeth (2) formed therein comprising an intermediate portion (10) engageable only by one of said sets of pinion teeth and end portions (11) engageable only by the other of said sets of pinion teeth. <IMAGE>
Patent GB-2033042-A (GB)
Title: Connecting members for metal rails
IPC: E04B9/10
Filed: 1978-11-08
Abstract: A connecting bracket for joining end-to-end two hollow T-shaped cross-section frame members (10), Fig. 11 (not shown), the bracket comprising a section with a vertical web (18), and laterally projecting offset flanges (19, 20, 21), two on one side, and the third on the other. Each flange has a longitudinal jamming rib (21) and the web (18) has a rib (23) of increasing thickness towards the centre (24). To form a joint the bracket is inserted into the ends of the two frame members. In a modification, Figs. 6 and 7 (not shown), the jamming rib in the central flange 20 is divided into two parts with two abutment pimples in between to hold the ends of the frame members apart. <IMAGE>
Patent GB-2036904-A (GB)
Title: Pipe Fittings
IPC: F16L19/06
Filed: 1978-12-02
Abstract: A pipe fitting comprises a body 10 having, at its end or each end, a socket 13 for receiving a pipe 12 to be connected to the fitting, this socket being formed with a flared bell-mouth 15. A nut 16 (which may be a cap nut as shown or may be a sleeve nut) is retained on the body 10 by the bell- mouth 15 and faces the latter by a flared face 18. A complementary nut 20 (which is shown as a sleeve nut, but will be a cap nut if a sleeve nut is used as the nut 16) and a deformable sealing ring 19 are provided for fitting to the pipe 12. Upon screwing together the two nuts 16, 20, the ring is deformed into the space between the bell mouth 15 and the flared face 21, and is compressed onto the pipe 12, and the bell-mouth 15 is forced tightly against flared face 18 of the nut 16. <IMAGE>
Patent GB-2010352-A (GB)
Title: Paper Sizing Process
IPC: D21H17/66
Filed: 1978-12-12
Abstract: A process of sizing paper in which resin size is precipitated by means of a precipitant, the precipitant being a practically sulphate-free aluminium polyhydroxy chloride (Alr(OH)sClt)n wherein n is a whole number greater than or equal to 1. The use of the specified precipitant reduces or avoids corrosion problems encountered when alum is used as the precipitant and caused by the reduction of the sulphate to sulphides.
Patent GB-2038936-A (GB)
Title: Exhaust Gas Recirculation in an Internal Combustion Engine
IPC: F02B75/02
Filed: 1978-12-29
Abstract: A multicylinder internal combustion engine comprises a transfer duct 14 connecting two cylinders 1 and 2 and transfer valves 12 and 13 operative to open and close the duct to allow some exhaust gas to transfer from one cylinder to the other to preheat the charge in that cylinder near the end (P1) of that cylinder compression stroke (P1 to P2 Fig. 10b). Transfer takes place before the exhaust valve 7, 8 in the said one cylinder has opened (P4) and if desired opening of the exhaust valve may be delayed. The duct may be defined within or external to the cylinder block and is as short as possible and the transfer valves may be cam operated from a camshaft 19 driven from the camshaft 11. <IMAGE>
Patent GB-2014452-A (GB)
Title: Producing cell envelope preparations
IPC: A61K39/10
Filed: 1979-02-16
Abstract: An antigenically-active cell envelope fraction from bacterial cells, especially Bordetella pertussis, may be isolated by disrupting the cells, separating the cell envelopes from the other cell components, extracting the separated envelopes with a solution of a zwitterionic surfactant and precipitating the cell envelope preparation from the resulting extract, e.g. by the addition of a lower alkyl (C1 to C5) alcohol, preferably ethanol. The preferred extractant is an N,N,N-trialkyl zwitterionic compound, especially an N,N,N-trialkyl- alpha - amino acid or an N,N,N-trialkyl amine oxide.
Patent GB-2022909-A (GB)
Title: Nuclear fuel sub-assemblies
IPC: G21C3/33
Filed: 1979-05-02
Abstract: In a liquid metal cooled fast breeder nuclear reactor, the fuel sub- assembly comprises a bundle of fuel pins 4 within a tubular wrapper 5 and spaced apart by a series of cellular bracing grids 6 each pin occupying a discrete cell of each grid. The bundle of pins is arranged in inner and outer sub-bundles the pins of the inner sub- bundle being retained by a lower first hold down grid 7 attached to the wrapper and the pins of the outer sub- bundle being retained by a second hold down grid 7 disposed immediately above the lower hold down grid. The arrangement is advantageous when such elements are dismantled. The wrapper may be severed at each hold down grid, and the pins withdrawn in sections. <IMAGE>
Patent GB-2022623-A (GB)
Title: Feed device for calenders
IPC: D06F67/04
Filed: 1979-06-01
Abstract: A feed device for feeding laundry pieces (10) to a calender (12) comprises a cross-member (1) arranged transversely above a feeder conveyor (11) and rotatable in steps of 180 DEG  about its axis (33) in the clockwise direction. The cross-member (1) supports a pair of grippers (2) and a pair of grippers (3) angularly displaced from each other by 180 DEG . The two grippers (2) or (3) of each pair being spaced apart from each other along the axis (33), the laundry piece (10) being supplied to the conveyor (11) either by grippers (2) or grippers (3). Each gripper (2 or 3) includes an upper clamping arm (14) spring-biassed in the clockwise direction against a shorter, lower clamping arm (13), the arm (14) carrying at its free end a roller (15). Thus, on rotation of the cross- member (1), each roller (15) contacts the conveyor (11) to press the leading edge portion of the laundry piece (10) between itself and the conveyor and to open the gripper (2 or 3) against the spring-bias of its arm (14) so that the laundry piece (10) is deposited on the conveyor (11). Drive means are provided on the cross-member (1) to enable the spacing between the two grippers (2) or (3) to be varied to permit the spreading of the laundry piece (10) held by the grippers and also to permit the holding of laundry pieces of different sizes, and further drive means are provided to enable the two grippers (2) or (3) to be positioned either centrally with respect to the midpoint of the axis (33) or displaced eccentrically towards one or the other end of the cross-member (1). <IMAGE>
Patent GB-2031692-A (GB)
Title: Telephone substation apparatus
IPC: H04M1/725
Filed: 1979-09-20
Abstract: A substation apparatus has an electronic device for forming and using a name and telephone number list and for automatically calling the numbers inserted into said list in response to names. The apparatus includes an alphanumeric keyboard; a microprocessor driven by said keyboard, and by a plurality of function keys; at least an electronic store module associated with said microprocessor in such a way as to from said name and number list and to automatically transmit numbers on the line; an alphanumeric display associated with said microprocessor and electronic store module, for displaying the names and numbers formed on said keyboard, to be inserted into the list or already inserted therein. The apparatus may be provided with loudspeaking facilities, wireless bandset and interface to other facilities e.g. recorder.
Patent GB-2033458-A (GB)
Title: Signalling and safety device for vehicle door edges
IPC: B60J10/00
Filed: 1979-10-09
Abstract: A door fitting, mainly for buses and other public service vehicles, includes a rigid elongate member (4) which forms at least a major part either of the closing edge of a door or of a door jamb. This elongate member (4) is flexibly connected to a main rigid member (7) of the door or jamb as the case may be and a detector (16) responds to the position of the elongate member with respect either to the main rigid member or the mating edge. This avoids injury or damage to anything caught in the door and signals to the operator. <IMAGE>
Patent GB-2033236-A (GB)
Title: Device for Introducing a Catheter or Probe into a Blood Vessel
IPC: A61M25/06
Filed: 1979-10-18
Abstract: A device for introducing a catheter or probe into a blood vessel, has an elongate sheath (5) of plastics material having a longitudinal slit (6). The sheath (5) is introduced into a blood vessel by sliding it along a perforator (2) which is inserted into a needle puncture in the blood vessel wall. The slit allows the sheath to expand to accommodate a probe or catheter of diameter greater than its internal diameter and facilitates removal of the sheath while the probe or catheter is still in place. <IMAGE>
Patent GB-2062684-A (GB)
Title: Cast Steel Tools
IPC: C22C38/26
Filed: 1979-11-07
Abstract: In a casting process for the production of steel cutting tools, one or more of a rare earth metal, zirconium and niobium, preferably cerium, is added in an amount of Re 0.1-0.8% to a low-carbon steel melt, the melt is cast and then the surface layer of the cast is enriched to a minimum of 0.6% carbon content, to a depth of at least 1 mm. The addition may also take place during pouring. The steel used contained:   <IMAGE>
Patent GB-2046125-A (GB)
Title: Gas Filter
IPC: B60R21/264
Filed: 1979-12-06
Abstract: A filter for gas bag impact protection devices suitable for use in vehicles comprises a plurality of metal spheres (e.g. bronze or brass) sintered together to form a rigid body (4). The body may vary in thickness or comprise central and peripheral regions of differently sized spheres or incorporate a central baffle, to distribute gas from generator 2 in desired fashion over the area of the filter. <IMAGE>
Patent GB-2068101-A (GB)
Title: Flame treatment burner
IPC: E01C23/08
Filed: 1980-01-26
Abstract: An inlet manifold 3 below a combustion chamber 4 is transpierced by burner orifices 25 and is supplied from an inlet 6 to channels 20, 21 extending longitudinally of a bar 19. Ceramic cheeks 26 in the chamber are spaced from casing wall 11 and direct air/gas from passages 22 in the channels through passages 27 to the combustion chamber. An additional top manifold has a bar 12 with channels 13, 14 supplied from the inlet manifold with flanges pierced by arrays of passages 15 leading to the combustion chamber. Additional precombustion and/or alternative mixing chambers 30, 31 (Figure 4 not shown) are described. <IMAGE>
Patent GB-2047687-A (GB)
Title: Microbiocidal compositions
IPC: A01N41/10
Filed: 1980-03-10
Abstract: A microbiocidal composition contains a microbiocidally active halosulphone together with a carrier or diluent therefor, the halosulphone having the general formula:   <IMAGE> in which X is a halogen atom, preferably a chlorine or bromine atom; each of the groups R is an alkyl, hydroxyalkyl (other than ???-hydroxyalkyl), alkoxyalkyl (other than ???-alkoxyalkyl), phenyl, halophenyl or alkylphenyl group or the groups R together form a polymethylene chain; and R<1> is a hydrogen atom or an alkyl or hydroxyalkyl group or a group -COOR<2> or SO2R<2> (in which R<2> is an alkyl group). Compounds of Formula i in which the groups R, R<1> and X have the meanings defined above and in which:     R is a hydroxyalkyl or alkoxyalkyl group;     R<1> is a hydroxyalkyl or alkoxyalkyl group; R<1> is a group -COOR<2> in which R<2> is an alkyl group containing at least two carbon atoms and R is an alkyl group; or the group R forms a polymethylene chain and     R<1> is other than a methyl group; are new compounds and are provided as a further feature of the invention. The invention also provides a method of killing or inhibiting the growth of bacteria or fungi which comprises applying to the bacteria or fungi a halosulphone of formula (I) as defined above.
Patent GB-2046462-A (GB)
Title: Long run electrophotographic- imaged lithographic printing plate
IPC: G03G13/26
Filed: 1980-03-21
Abstract: An electrophotographically imageable article capable of providing a lithographic printing plate comprising an electrically conductive support, a resinous coating overlying said support, the major component of which is a resin selected from the group consisting of polyurethanes, acrylics, acrylate copolymers, polysulfones and polyvinyl acetates, and a photoconductor layer overlying said resinous coating.
Patent GB-2076804-A (GB)
Title: Process for the Preparation of a Trihalohydroxyl Compound
IPC: C07C29/62
Filed: 1980-05-30
Abstract: Aldehydes are converted to a trihalohydroxyl compound by reacting them with a haloform, CHX3, wherein X is chosen from fluorine, bromine, chlorine and iodine and a catalytic amount of a trihaloacetate CX3COOM, wherein X is chosen from bromine and chlorine and wherein M is alkali, e.g. Na or K.
Patent GB-2054193-A (GB)
Title: Scanning Apparatus Comprising an Air Lens
IPC: H04N3/06
Filed: 1980-06-12
Abstract: Scanning apparatus for the production of thermal images comprises a rotating refractive polygon, which is divided into a rotatably polygon outer element (3) with externally applied pairs of polygon parallel surfaces (3a) and a stationary substantially cylindrical inner element (4). Formed on the inner element (4) substantially perpendicularly to the optical axis is a surface (4a), which forms an air lens (5) within the outer element (3) for the correction of astigmatism. The surface (4a) may be planar, spherical or aspherical. <IMAGE>
Patent GB-2080749-A (GB)
Title: Overhead conveyor switch arm
IPC: E01B25/26
Filed: 1980-07-15
Abstract: Former switch arms have been arranged to be pivoted about an upright axis for switching to a branch rail but considerable difficulty could be experienced in manually adjusting the arm to ensure that it was properly seated in each of its operative positions so that the conveyor was only suitable for use at low levels. In the present invention this problem is overcome by having the switch arm 5 rotatable about a longitudinal axis 13 sloped laterally towards the branch rail 6 so that in moving the switch arm between the operative positions there is rotation of the switch arm and movement thereof in a conical path upwards from one operative position and downwards towards the other operative position. Consequently the switch arm is positively guided. <IMAGE>
Patent GB-2057260-A (GB)
Title: Vehicle seat suspension
IPC: B60N2/50
Filed: 1980-08-11
Abstract: A spring suspension for a vehicle seat comprises a seat support frame 10 for supporting a seat, a base frame 11 to be secured to the vehicle's floor, a system of scissor-action pivotal linkages (12), 12', 15, 15' interconnecting the base frame and seat support frame to guide the vertical movement of the seat support frame, and coil springs 20 to bias the seat support frame upwardly, the coil springs acting between the base frame 11 and a linkage 12' of the linkage system. The vertical spring rate of the suspension is varied by connecting the springs at one end thereof to a lever 24' which is pivoted via a support 23' to the linkage 12' and movable by a screw mechanism 25 to vary the moment of the force of the springs 20 about the pivot axis at 13 of the linkage 12' and hence to vary the torque applied to linkage 12'. Preferably the distance (e) between the line of action of the springs and the axis 13 and the sprung mass m are related by the expression e<2> alpha m. (Fig. 1.) A vibration damper is connected between the mountings to which the ends of the springs are secured so that the vibration damping effect is varied as the moment of the spring force is varied. <IMAGE>
Patent GB-2057007-A (GB)
Title: Gasification of Solid Carbonaceous Materials to Produce Gas Suitable for Ammonia Synthesis
IPC: C10J3/54
Filed: 1980-08-22
Abstract: Coal is contacted with air and steam in a fluidized bed and heat is provided by downward flowing hot char or hot thermal refractory material through the fluidized bed. The char or refractory material is heated externally of the fluidized bed by combustion of fuel and/or a portion of the char. Control of the ratio of steam and air to the coal provides a gasification product of approximately 3 moles carbon monoxide plus hydrogen per mole of nitrogen. <IMAGE>
Patent GB-2059725-A (GB)
Title: Zero-crossing comparator with threshold validation
IPC: H03K5/153
Filed: 1980-09-04
Abstract: In carrier and timing recovery systems for high performance data modems it is essential to employ threshold comparators and to be able to determine accurately zero-crossing instants. The circuit of the invention comprises a comparator with feedback which produces a positive transition of the comparator output in response to the negative zero-crossing transition of the input signal on condition that the previous half-cycle of the input signal has exceeded the positive reference threshold. In a practical arrangement two comparators are provided together with a pair of bistable storage elements which produces a narrow pulse in response to the negative zero-crossing transition of an input signal provided that the input signal has exceeded the positive reference threshold applied to the second comparator.
Patent GB-2065745-A (GB)
Title: An explosion relief device
IPC: E04H1/12
Filed: 1980-11-27
Abstract: The explosion relief device comprises a panel 12 arranged to open or close an aperture 8 in a housing or other chamber and a releasable retainer 14 for holding the panel in the closed position. Movement of the sheet 13 releases a retainer to enable explosive forces to force open the panel 12 and relieve pressure in the chamber. <IMAGE>
Patent GB-2081562-A (GB)
Title: Harvester
IPC: A01D47/00
Filed: 1981-02-27
Abstract: A harvester adapted to reap and collect plants whose grain carrying heads are short in proportion to the length of their stalks comprises a cutter 4 to cut the plants immediately below the grain-carrying heads or thereabout and a collector 5 to collect the cut crop. <IMAGE>
Patent GB-2070891-A (GB)
Title: Active suspension electromechanical transducer and process for manufacturing same
IPC: H04R17/00
Filed: 1981-02-27
Abstract: A process for manufacturing an electrochemical transducer, having at least one active element in the form of at least one film of a polymer material, comprises the following steps. First, clamping a polymer film between an inner set of jaws for delimitating a central area. Second, further clamping said polymer film between an outer set of jaws for delimitating a peripheral area surrounding the central area. And finally, shaping at least one of the areas by stretching.
Patent GB-2076483-A (GB)
Title: Control system for a continuously variable transmission for vehicles
IPC: F16H63/02
Filed: 1981-03-19
Abstract: A control system for a continuously variable transmission for vehicles is provided with an electric circuit receiving input signals of vehicle running conditions and a hydraulic control circuit. The hydraulic control circuit comprises a reduction ratio control device 80 controlled by the electric control circuit and regulating the hydraulic pressure supplied to the hydraulic servo system of the input pulley and changing reduction ratio between the input and output shafts of a V-belt type continuously variable transmission, and a shift control mechanism 70 controlled by the electric control circuit and regulating the rise time of hydraulic pressure supplied to the hydraulic servo system of friction engaging elements of a planetary forward/reverse gear set. The control system permits the automatic transmission to perform under desirable running conditions such as optimum fuel economy, and it generates the hydraulic fluid pressure required in any portion of the automatic transmission during working and eliminates shock of the shifting operation. <IMAGE>
Patent GB-2096829-A (GB)
Title: Thermal cut outs
IPC: H01H37/32
Filed: 1981-04-10
Abstract: A thermal cut-out for an electric kettle or the like employs as the sensor a bimetal or, as shown an SME element (15) located adjacent a steam outlet valve (13, 31) from the kettle. On expansion of the SME element (15) on being heated by the steam, a rod (17) is driven towards a snap- action mechanism (18, 22) which opens electric contacts (20, 21) in the circuit of the kettle heating element. A valve member (31) which is normally open is moved by the rod (17) to close the valve on expansion of the SME element (15) to prevent excessive heating of the latter. In alternative applications the heat source may be a jet of hot liquid. <IMAGE>
Patent GB-2077912-A (GB)
Title: Monitoring the Planarity of Metal Sheet
IPC: G01B11/245
Filed: 1981-06-11
Abstract: Optical beams from lasers 6, 7, 11, 12, 13 are directed towards the middle and edges of a hot rolled steel sheet 1 by fixed mirrors 16, 17, 29- 32 and rotatable mirrors 18, 40 which allow for different sheet widths. The points 21, 22, 35, 43, 44 of incidence of the beams are observed by photodiode cameras 8-10, 14, 15 whose receiving axes are orientated by fixed mirrors 25, 26, 37, 38, 47, 48 and rotatable mirrors 23, 24, 45, 46 so that the said points remain in the respective fields of observation of the cameras. The levels of the points are obtained by triangulation and are used in the calculation of the planarity of the sheet. <IMAGE>
Patent GB-2101579-A (GB)
Title: Ceramic structure
Inventor: GIFFORD DOUGLAS CECIL
IPC: B01D39/10
Filed: 1981-06-18
Abstract: A ceramic structure suitable for use as a liquid metal filter consists of multi-plicity of layers of parallel ceramic extrusions which are extruded in separate layer's at 90 DEG  to each other and in the same plane, the resulting extruded structure then being fired to sinter the ceramic. <IMAGE>
Patent GB-2080561-A (GB)
Title: Liquid crystal display device
IPC: C09K19/34
Filed: 1981-07-02
Abstract: A liquid crystal display device contains a nematic liquid crystal material satisfying the following conditions (a) to (c) i.e. (a) a threshold voltage of 2 V or less, (b)  DELTA  epsilon / epsilon 1</=2, and (c) having substantially no absorption in the visible light region. The device has excellent wider viewing angle properties, low voltage driving and a colorless display surface.
Patent GB-2101569-A (GB)
Title: Apparatus for assisting the discharge of materials from bins, hoppers or the like
Inventor: POULTON BARRIE A
IPC: B65D88/66
Filed: 1981-07-14
Abstract: A hopper-like container (10) comprising a baffle (18) over the discharge opening and secured to the container by rigid members (17, 16, 15 and 14), has vibrator means (20), e.g. a pneumatically powered turbine vibrator, connected to the baffle and adjustable weight means (22) connected to the baffle so that it can vibrate in a resonant mode. <IMAGE>
Patent GB-2103388-A (GB)
Title: Servovalves
Inventor: BALLARD JOHN S
IPC: F15B20/00
Filed: 1981-08-08
Abstract: A servovalve has first 15 and second 16 valve spools mounted for independent sliding movement relative to a body (Figs 1 2 3, not shown) in response to a common command signal. The valve has a first and second drive mechanism operatively arranged to cause a desired synchronous motion of the valve spools in response to the command signal and a differential position sensing mechanism 41 arranged to sense the relative positions of the two valve spools and operative to produce an output related to the difference therebetween to operate an indicating device to indicate substantially dissimilar relative positions of the spools eg a minus switch 72. The valve is used as part of a duplicate system for controlling aircraft (Fig 5, not shown), the signal being used to shut down the operating system and switch a stand by system to active. <IMAGE>