baber/WOPTO huggingface dataset:
Patent GB-2069800-A (GB)
Title: Ovening of circuit components
IPC: H05B3/10
Filed: 1980-02-15
Abstract: If extreme accuracy is required, certain types of circuit components, especially the quartz crystals commonly used for frequency control in oscillator circuits, must be operated at a predetermined temperature. It is usual to provide each temperature-sensitive circuit component with its own little heater unit (oven); this technique is known as "ovening". The ovening of circuit components mounted within a flat can (10) be achieved by means of a heater unit which comprises two heater assemblies (11) mounted parallel to and facing each other, and spaced apart by a distance equal to the thickness of the can, each heater assembly comprising a substrate (12) of a shape and size corresponding to the side face of the can and of an electrically-insulating but thermally-conducting material, one face of the substrate bearing a sheet-like resistive thermistor element (13), together with its associated connection means (14), and the opposing face bearing a sheet-like resistive heater element (15), together with its associated connection means (16). The heater elements and thermistor elements are connected in a feedback-type temperature control circuit. <IMAGE>
Patent GB-2049225-A (GB)
Title: Fluid-flow restricting apparatus for mixing fluids
IPC: B01F23/10
Filed: 1980-03-21
Abstract: The apparatus comprises a body 200 of solid material housing capillary tubes 226 in passage 206 to 224. Nuts 240 compress elastomeric O-ring sealing members 242 such that they make fluid-tight seals between the capillary tubes and their respective passages. An inlet header 202 is demountably attached to the body 200 and has inlets 246, 248, 250 and 252 communicating with chambers 254, 256, 258 and 260 respectively. By means of the chambers, the inlet 246 is placed in communication with the capillary tubes in passages 206, 208, 210 and 212; the inlet 248 with the tubes in passages 214, 216, 218; the inlet 250 with the tubes in passages 220 and 222 and the inlet 252 with the tube in the passage 224. The outlets of the capillary tubes communicate with a common outlet passage 236. The apparatus may be readily dismantled and reassembled to allow the capillary tubes to be changed. <IMAGE>
Patent GB-2045704-A (GB)
Title: Deflecting a rocket exhaust stream
IPC: F02K9/82
Filed: 1980-03-21
Abstract: Rocket propulsion unit for guided missiles, with a jet deflection system for vectored thrust, wherein the thrust nozzle 8 has an extension bell 12 immediately following the outlet mouth 10 of the nozzle and extending beyond the expansion ratio corresponding to ambient pressure. To effect jet deflection control impulses are arranged to take effect in a desired direction of deflection and are fed through control apertures 24B, 28A distributed around the periphery of the nozzle. The control apertures feed into a marginal zone at the outlet end 10 of the nozzle and are connected to an injection system 14 which provides the apertures with pressure gas or liquid (e.g. a refrigerant) as a control fluid. Fins 16, 18, 20 may be provided between two closely adjacent nozzles whereby roll control may be effected through differential feed of control fluid to each nozzle. <IMAGE>
Patent GB-2072521-A (GB)
Title: Constructional toy kits
IPC: A63H33/10
Filed: 1980-04-28
Abstract: A kit comprises a plurality of wall units (8) each provided with at least two flaps (10). The wall units (8) are releasably interconnected by face-to-face clamping of respective flaps (10). Resilient plastics clamps (4) of U-shaped cross-section can be used; alternatively, elastic bands (100, Fig. 11, not shown) can be engaged in notches (101) in the units. Platform members (5,6) are inserted into a series of wall units (8) formed as a tube to produce a tower of a particular cross-section. <IMAGE>
Patent GB-2080284-A (GB)
Title: Method of producing 4-(4- Hydroxyphenyl)-2-butanone
IPC: C07C45/71
Filed: 1980-07-22
Abstract: 4-(4-Hydroxyphenyl)-2- butanone is produced by the reaction of phenol with 4-hydroxy-2-butanone in the presence of a cation exchange resin as catalyst. According to this method, the product is obtained with high percentage selectivity and in high yield; operational safety is enhanced; separation of resinous by-product from the main product is easy; and the reaction is easily controlled.
Patent GB-2059457-A (GB)
Title: Weaving looms having rotary shed forming drums and beat up mechanisms therefor
IPC: D03C13/00
Filed: 1980-08-28
Abstract: In a weaving loom having a rotary shed forming drum, means for guiding warps around the drum to a fabric take-up mechanism, means for inserting wefts into successive sheds as the drum rotates, a beat up mechanism is provided including pivotable beat up bars 50 rotatable in synchronism with the shed forming drum, a plurality of beat up blades 52 on the bars 50, and cam means 74 for controlling the beat up bars 50 to cause them to engage the wefts as the warps pass to the fabric take-up position radially outwards of the shed forming drum and to beat up the wefts, and for permitting pivotting of the beat up elements contrary to the direction of rotary movement of the beat up bar 50 so as to move the beat up blades 52 clear of the fabric after beating up. <IMAGE>
Patent GB-2089690-A (GB)
Title: Metal containers
IPC: B21D51/26
Filed: 1980-12-16
Abstract: A can with a soldered or welded seam has an internal layer of thermoplastic tape (4) or other protective material covering the seam region. The protective material is bonded to the can body, at least partly by virtue of the heat of the welding or soldering process, in the case of a thermoplastic material. The seam 11 is formed at the top of the can blank, with a tape of the protective material extending through the can body; the can body is then rotated 180 DEG and raised to bring the seam 11 into contact with the tape 4. <IMAGE>
Patent GB-2090415-A (GB)
Title: Liquid level meter
IPC: G01F23/26
Filed: 1980-12-30
Abstract: A liquid level meter for measuring the level 3 of fuel 2 in a tank includes a pair of identical elongate annular capacitors 12, 14 with inner and outer tubular plates 18 and 16. Liquid is at a level 3 to be measured in one capacitor 12 while the other capacitor 14 does not contain liquid but is open to atmosphere at the top 26 and is interconnected with the top of the one capacitor at 25. Shielded twisted conductors 34 from the two inner electrodes 18 are used to connect the two capacitors and in respective square wave one-shot oscillators and controlled from a common square wave oscillator. The difference between the charging times of the two one-shot oscillator circuits and is a measure of the liquid level and during that difference time high-frequency pulses from a further oscillator can be counted in a counter. <IMAGE>
Patent GB-2091423-A (GB)
Title: Control lever
IPC: B25J13/02
Filed: 1981-01-21
Abstract: A transducer device for producing electrical signals responsive to angular movement of a joystick control lever 1 includes two mutually perpendicular shafts 4, 10 which rotate in proportion to angular displacements of the control lever 1. The shafts 4, 10 carry respective discs 6, 14 on which pairs of permanent magnets 7, 8 and 15, 16 are carried, each pair of magnets being arranged so as to present opposite poles to respective Hall effect sensors 9, 17 so that the electrical outputs from the two sensors are proportional to the relative angular displacement of their associated magnets and, therefore, the angular displacements of the associated shafts 4, 10. <IMAGE>
Patent GB-2093431-A (GB)
Title: Bag
IPC: B65D33/02
Filed: 1981-02-20
Abstract: In a bag formed from panels each of which has a rectangular portion 1 and a tapering portion 2, the rectangular portions form sides and the tapering portions a bottom so that the bag is capable of assuming a box- like shape with an open top. Side seams are provided with reinforcement so that they are sufficiently rigid to allow the bag to maintain the box-like shape when it is standing on its bottom. <IMAGE>
Patent GB-2074294-A (GB)
Title: Plug Valve for Reduced Leakage
IPC: F16K5/02
Filed: 1981-04-07
Abstract: A plug valve has an actuating stem 26 which is non-integral with the valve plug 16. The actuating stem is axially movable with respect to the valve plug to compressingly and sealingly engage an external sealing member 37 in response to fluid pressure. The plug wedges itself into sealing engagement in response to fluid pressure. <IMAGE>
Patent GB-2097417-A (GB)
Title: Preparation of highly basic alkaline earth metal salts of organic acids and oil compositions containing them
IPC: C10M159/20
Filed: 1981-04-28
Abstract: A process for the preparation of highly basic alkaline earth metal salts of organic acids comprises reacting an alkaline earth metal hydroxide with carbon dioxide in the presence of methanol and, if desired a volatile diluent, at a temperature below 50 DEG C; mixing the reaction product with one or more (salts of) organic acids; reacting the mixture obtained with additional carbon dioxide; separating water and methanol from the reaction mixture and removing crystalline inorganic solids if present.
Patent GB-2080032-A (GB)
Title: A plug for masking switching contacts
IPC: H01H27/04
Filed: 1981-06-02
Abstract: A plug for masking switching contacts, for instance in terminal strips of telecommunication devices, comprising an upper pulling head, a widened central supporting portion, and two lower spring tongues with a guiding web disposed therebetween. The plug is integrally formed and has the function of masking or, respectively, separating solderless, screwless and stripless switching contacts (so-called LSA-PLUS contacts) in terminal strips, wherein the contact points of these switching contacts are not touched by any parts of the plug so as to avoid contamination.
Patent GB-2079005-A (GB)
Title: A system for supplying data for control of a character reproducing apparatus (e.g. A jacquard loom)
IPC: G05B19/14
Filed: 1981-06-03
Abstract: A character reproducing apparatus in the form of a Jacquard loom (10) is controlled to weave a succession of characters by a system which includes a first digital data store (12) which contains, at predetermined address locations, control data for the loom (10). A paper tape reader (11) can supply signals corresponding to the characters to be woven, these characters indicating address locations in the store (12). Character data so addressed is supplied, under control of a processor (13) and for one row of weave at a time, to a second data store (19) which can hold sufficient data to control all the warp threads in a row of weave. The warp threads are controlled by a circuit (20) responsive to the data in the second store (19). Transfer of data to and from the second store (19) is also controlled by a circuit (22) which is responsive to each cycle of the loom (10). Additional data in a store (16) can be supplied to the loom (10) under control of a further processor, selection of the store (12) or store (16) being effected through a control panel (18). A plurality of tape readers (11) may be used to effect supply of pattern data to respective ones of a plurality of looms (10). <IMAGE>
Patent GB-2086451-A (GB)
Title: Rotary drill bit for deep-well drilling
IPC: E21B10/567
Filed: 1981-09-11
Abstract: A rotary drill bit for deep-well drilling, consisting of a body member 1, a threaded pin 2, for connection to a drilling string or the like rotary drive and a head which is provided with cutting elements which extend from the base region of the head into its central region and are combined, in groups in the form of rows or strips, as cutters 3, 4 projecting beyond the outer periphery of the bit, said cutting elements comprising both cutting elements 6 which have only one plane cutting face and cutting elements 5 with a divided cutting face the component faces of the divided cutting face being at a mutual angle to one another of less than 180 DEG . <IMAGE>
Patent GB-2136290-A (GB)
Title: Aid for assisting a person to upstand from a sitting position
Inventor: WALKER ASLEY JOHN
IPC: A61H3/00
Filed: 1981-09-22
Abstract: The aid comprises legs 4 pivoted to a tubular main body 1 and movable from the position shown to a collapsed position (Fig. 2) via a knob 9, and two pairs of handles 5, 5 and 6, 6. In use a person can upstand by first grasping the lower handles 5, 5 and then the upper handles 6, 6 and subsequently, if desired, by collapsing the legs, use the aid in the manner of a walking stick. <IMAGE>
Patent GB-2108882-A (GB)
Title: Ratchet screwdriver
Inventor: SIU WING WONG
IPC: B25B15/04
Filed: 1981-11-06
Abstract: A ratchet screwdriver comprises a manually grippable handle 10, a sleeve 2 freely rotatably mounted within the handle and projecting axially from one end thereof, a chuck within the sleeve for non-rotatably mounting a blade 17 therein, a gear ring 4 having internal teeth secured within the handle, a core member 3 freely rotatably mounted within the gear ring 4 and non-rotatably connected to the sleeve 2, and ratchet drive means for selectively connecting the core member to the gear ring to transmit torque in one direction of rotation and to permit rotation in the other direction, and vice versa. The ratchet drive means includes a claw member 7 pivotally mounted on the core member 3 and having two teeth alternatively engageable with the internal teeth on the gear ring, and a control switch assembly 23 for pivoting the claw member 7 so that one or the other of its teeth selectively engages the internal teeth of the gear ring. <IMAGE>
Patent GB-2090220-A (GB)
Title: Composite container construction
IPC: B65D25/18
Filed: 1981-04-16
Abstract: A container (10) for vacuum packaging of products includes an outer container (14) and an inner liner (20) which conforms generally to the configuration of the outer container and is secured to the upper open end thereof while the remainder of the container and liner are unattached. A vent (60) is provided between the atmosphere and the space between the container and liner so that the liner can expand and collapse as differential pressures are applied to the product sealed in the liner by a plastic film (40) secured open end thereof.
Patent GB-2091828-A (GB)
Title: Brake booster
IPC: B60T13/567
Filed: 1981-12-15
Abstract: A brake booster for an automotive vehicle has a low-pressure casing (1) formed by two sheet-metal casing shells (18, 19) provided with reinforcing plates (14, 15) retained axially by reinforcing depressions (20, 21 and 22, 23), or the edge (37) of shell portion (13). One shell (19) has an integrally-formed peripheral bead (24) adjoining an integrally- formed cylindrical portion (25). The latter also has reinforcing axial depressions (26) and is joined to the periphery of the other shell (18) so as to trap between them the beaded rim (30) of the rolling diaphragm (6). <IMAGE>
Patent GB-2092755-A (GB)
Title: Detecting electrically the stopping of a moving element
IPC: G01P13/00
Filed: 1981-12-30
Abstract: A system for detecting the stopping of a normally moving machine component, e.g. a flywheel (3) of a press, in which the like outputs of at least two pulse transmitters (1, 2) are connected together and after passing through separate channels (13, 14) are connected to an AND- gate 15 whose output indicates stopping of the flywheel. In Fig. 1 (not shown) the two channels (13, 14) terminate in relays whose contacts are connected in series to constitute an AND-gate. The two channels (13, 14) are used for the purposes of detecting any relative displacement of the transmitters (1, 2). <IMAGE>
Patent GB-2092869-A (GB)
Title: An electric cooker
IPC: H05B3/74
Filed: 1982-02-08
Abstract: An electric cooker comprising a glass ceramic cooking surface having one or more electrical heaters arranged on the underside of the cooking surface has means for warning a user when the cooking surface is above a safe touching temperature. The warning means comprises a temperature monitoring device thermally coupled with at least one of said one or more electrical heaters and comprising a switch (42) including a thermally sensitive mechanical switching element such as a bi-metallic snap disc (52), an auxiliary electrical heater (38), for example of PTC material, for supplying additional heat to the switching element, and a thermal buffer (44), such as a disc of mild steel, between the auxiliary heater and the switching element. A neon lamp or a filament lamp is provided in series with the switching element for indicating when the switching element is at or above a predetermined temperature. <IMAGE>
Patent GB-2123466-A (GB)
Title: Curtain sided railway goods vehicle
Inventor: GOODWINS JOHN
IPC: B61D39/00
Filed: 1982-07-15
Abstract: In a curtain sided goods vehicle suitable for use on railways the sides are closed by curtains 24 suspended from upper side rails 20 and fastened at their lower ends at or adjacent to the lower side rail. The track 20 is mounted at the extremities of arms 19 spaced apart along the vehicle and raised or lowered by rotation of a common shaft 18. Means is also described by which vertical tension may be applied at the lower edge of the curtain. The reinforcing straps in the curtain may be of steel and buckles are unnecessary. <IMAGE>
Patent GB-2125353-A (GB)
Title: Belt conveyor support structure
Inventor: POTTS ALAN
IPC: B65G21/06
Filed: 1982-08-13
Abstract: A belt conveyor assembly includes a plurality of base sections 13 aligned in a row in an end to end fashion, adjacent base sections being pivotally connected to one another at 18, the row of base sections collectively defining a support surface for the lower run of a conveyor belt, and a plurality of upper sections 12 aligned in a row in an end to end fashion to collectively define a support surface for the upper run of the conveyor belt, each upper section being positioned to extend across a pair of adjoining base sections and being pivotally connected at each end to a respective one of said pair of base sections. <IMAGE>
Patent GB-2128335-A (GB)
Title: Measuring conductivity of a soil sample
Inventor: GRIMES GUY WILSON
IPC: G01N27/06
Filed: 1982-08-13
Abstract: A method for measuring the conductivity of a soil sample comprises the steps of:   (a) introducing a predetermined quantity (up to mark 4) of the soil to be tested into a measuring cell (1) provided with a pair of electrodes (2) mounted in the side walls of the cell and spaced apart from the bottom of the cell; (b) introducing a predetermined quantity of an extractant liquid comprising deionised water into the cell (up to mark 5); (c) agitating the soil sample in contact with the extractant liquid to extract water-soluble salts from the sample; and (d) measuring the electrical conductivity of the liquid between the two electrodes of the cells.   <IMAGE>
Patent GB-2109783-A (GB)
Title: Crystalline sodium carbonate
Inventor: TAYLOR GEORGE ROSS
IPC: A61K9/00
Filed: 1982-11-19
Abstract: A method is disclosed for preparing a crystalline, substantially anhydrous uniform sodium carbonate having a bulk density of from 0.2 to 0.6 g/ml and a particle size of from 60 to 200 microns which comprises removing any extraneous particles from a solution of sodium carbonate or sodium bicarbonate, precipitating said sodium carbonate or sodium bicarbonate from the said solution by the addition of a water-miscible non- solvent therefor (eg acetone), and separating said precipitate, followed in the case where sodium bicarbonate is separated, heating the sodium bicarbonate precipitate to effect substantially complete conversion of the sodium bicarbonate into sodium carbonate, whereby the sodium carbonate produced following the heating step has the desired bulk density and particle size. Sodium carbonate produces, and sodium bicarbonate products which are produced as intermediates having the desired characteristics, are also disclosed. Preferred products will also be sterile and free-flowing and are highly suitable for combination with pharmaceutically active compounds, particularly antibiotics such as the cephalosporin antibiotic ceftazidime.
Patent GB-2144669-A (GB)
Title: Cleaning electrical contacts
Inventor: HEINECKE RUDOLF AUGUST HERBERT
IPC: C23G5/00
Filed: 1982-12-07
Abstract: The contacts of a switch or relay are cleaned by exposure to a localised low pressure jet of an ionised plasma. Typically the plasma contains hydrogen, oxygen, sulphur hexafluoride, or mixtures thereof. The plasma may also include a noble gas, e.g. argon. <IMAGE>
Patent GB-2119669-A (GB)
Title: Endless belt filter
Inventor: PIERSON HENRI GERHARD WILLEM
IPC: B01D29/00
Filed: 1983-01-17
Abstract: Slurry is fed (at 52) onto the upper run 46 of endless filter belt 48 and is dewatered by intermittently- operating means e.g. vacuum box 54, press assembly 56 and/or gravity box 66. The belt 48 is guided by a number of transverse guide bars 44, 76, 82, 84, 86, 88 and is progressed intermittently by a displaceable guide bar 74 whose forward movement extends the upper run 46. The bar 74 is coupled (e.g. by cables 106) with a slack-compensating guide bar 104 cooperating with the return run of the belt 48 and unidirectional means (e.g. arrester guide 94 and arrester roller 98) allows movement of belt 48 only in the forward direction (arrow 114). Because this belt filter incorporates well supported guide bars instead of conventional rollers, the belt 48 can be much wider than has hitherto been practicable and the overall length of the filter may be correspondingly reduced, further obviating guiding problems. <IMAGE>
Patent GB-2134611-A (GB)
Title: Improvements relating to WC pan connectors
Inventor: PARKER ROBERT WILLIAM
IPC: E03D11/16
Filed: 1983-01-28
Abstract: A WC pan connector comprises in combination, a first element (1) for sealing with the soil outlet of the WC pan, a second element (2) for connecting with pipe work associated with a soil stack and a separately formed non-linear portion of uniform cross-section throughout its length providing a spacer length (3) between the first and second elements. The spacer length (3) may be angular, and initially formed with the angle at about its mid-length, so that it effectively has two arms one on either side of the angle. Thus, being of uniform cross-section it can, prior to fitting to the first and second elements be cut to shorten one or both of the arms, so that it has a desired run from the outlet of the WC pan. Also being angular it can accommodate a change in outlet angle from one WC pan to another. <IMAGE>
Patent GB-2118446-A (GB)
Title: Playground equipment
Inventor: RECORD ARTHUR JOSEPH
IPC: A63G13/00
Filed: 1983-03-15
Abstract: The equipment comprises a seating platform 6/8 movable about a pivot 18, which pivot includes an outer sleeve 30, an inner shaft 32, and a plurality of resiliently deformable members 38 located between the sleeve and the shaft. The members become deformed on pivoting the equipment and thereby limit the amount of movement. The equipment may be in the form of a see-saw, swing etc. <IMAGE>
Patent GB-2117547-A (GB)
Title: Display board and poster assemblies
Inventor: KENNEY GEORGE HENRY WOODWARD
IPC: G09F7/12
Filed: 1983-03-22
Abstract: A display assembly comprises a support sheet 1 of plastics material having a front surface which is highly polished and glossy and in the embodiment described the sheet is black. Printed or painted onto the front surface are spaced lines 2 of ink which may etch or form slightly raised lines which, at normal viewing distances become "invisible" by merging into the background of the support sheet. The glossy surface of the support sheet 1 is adapted to receive components 4 of highly polished PVC made to adhere using light pressure applied thereto. These components are applied using the lines 2 as a guide and may comprise individual letters or numerals, or complete words. The background colour of the components 4 is the same as the sheet 1, that is black, with white lettering thereon. An overlay 5 is provided secured by a clip 7 and formed of transparent flexible plastics having a matt rear surface and a glossy front surface so that further components 6 can be adhered thereto to form a display on the overlay itself. <IMAGE>