baber/WOPTO huggingface dataset:
Patent GB-1489904-A (GB)
Title: Closure of containers
IPC: B65D41/48
Filed: 1974-12-02
Abstract: 1489904 Manually removable sealed closure A R RAUSING 2 Dec 1974 [17 Dec 1973] 51998/74 Headings B8C and B8T A package for pressurized liquids comprises a rigid outer shell and a thin plastics liner which is attached to an upper plastics roof 3, Fig. 2, which has a pour opening with an outwardly directed, downturned annular flange 8 which interlocks with a downwardly and inwardly directed annular flange 6, 7 of a manually pressed on and removable resilient closure cap 4. A sealing compound 10, which may be a thermoplastic mixture of plastics and waxes, i.e. a hot melt adhesive, is used between the interlocked flanges. A tear tab 5 is attached between notches 12 and a weakening line 14 extending across the cap may be a continuation of a notch. The plastics liner, Fig. 1 (not shown), whose upper edge is sealed between the lower edge of roof 3 and the upper edge of the container's rigid outer shell has the whole of its outer surface, save its rounded closed bottom, in contact with the shell's wall. The cap and liner may be of P.V.C. or polyethylene.
Patent GB-1298364-A (GB)
Title: Benzodiazepine derivatives
IPC: C07D487/04
Filed: 1969-10-27
Abstract: 1298364 Triazolobenzodiazepines TAKEDA YAKUHIN KOGYO KK 27 Oct 1969 [5 Nov 1968 17 Dec 1968 (4) 25 Dec 1968 13 Feb 1969] 52394/69 Heading C2C Compounds of the general formula (R 1  = H, hydrocarbyl; R 2  = H, C 1-6  alkyl; rings A, B optionally substituted by one or more substituents selected from halogen, NO 2 , CF 3 , alkyl, alkoxy) their 5-oxides and acid addition salts thereof are prepared by reacting a compound of the formula or 4-oxide thereof with R 1 COOH or a reactive derivative thereof, optionally followed by reduction and/or salt formation. The above compounds are muscle relaxants, anticonvulsants, sedatives and tranquillizers, and may be administered in the form of pharmaceutical preparations containing them in association with a carrier.
Patent GB-1198638-A (GB)
Title: Improvements in or relating to Ladders and Methods of Manufacturing Them.
Inventor: PELLANDINE PETER JOHN
IPC: E06C7/08
Filed: 1967-11-20
Abstract: 1,198,638. Ladders. P. J. PELLANDINE. 20 Nov., 1967 [21 Nov., 1966], No. 52602/67. Heading A6L. An electrically insulating ladder comprises stiles 10 each formed from two parallel rods 13 of fibre glass, and hollow aluminium rungs connected to the stiles by aluminium plates 14 welded to the rungs and glued into slots in the stiles by an epoxy resin adhesive. The plates 14 may be initially cleaned by, e.g., sand blasting, before being glued in position, and may be apertured to improve bonding.
Patent GB-1322915-A (GB)
Title: Circuit arrangement of a generator of a binomial random  sequence
IPC: G06F7/58
Filed: 1970-11-05
Abstract: 1322915 Random pulse generators CESKOSLOVENSKA AKADEMIE VED 5 Nov 1970 [12 Nov 1969] 52782/70 Heading G4D A random pulse generator 101 depending on white noise and a pseudo-random generator 201 feed their 1 or 0 outputs to a modulo 2 adder 701, whereby the output at 901 has a probability very close to 0À5. All circuits 101, 201, 701 receive synchronizing pulses.
Patent GB-1453339-A (GB)
Title: Road rolling apparatus
IPC: E01C19/28
Filed: 1974-12-06
Abstract: 1453339 Road rolling apparatus STAVOSTROJ NARODNI PODNIK 6 Dec 1974 [6 Dec 1973] 52793/74 Heading B7H A road roller comprising two rollers 1 (only one of which is visible in Fig. 1) is steered by means of a truck comprising an arm 5 pivotally mounted on the road roller frame 2 and carrying a steerable wheel or wheels 11. In the illustrated embodiment, a single steerable wheel 11 is provided and the pivotal movement of the arm 5 is damped by metal-backed rubber discs 4. The steerable wheel 11 is mounted in a yoke 9 having a pivot pin 6 located in a bearing 7. A handle 12 is mounted on the yoke 9.
Patent GB-1088546-A (GB)
Title: Device for producing bales of dry raw rubber
IPC: B29B15/02
Filed: 1964-12-30
Abstract: 1,088,546. Baling rubber. TELEFUNKEN PATENTVERWERTUNG G.m.b.H. Dec. 30, 1964 [Dec. 30, 1963; Sept. 3, 1964], No. 52819/64. Heading B5A. [Also in Division F4] Preliminarily de-watered comminuted natural or synthetic rubber is formed into moisture-face blocks by a method involving the simultaneous compression and high-frequency dielectric heating of the material. In the embodiment shown, granulate from a hopper 13 is received in a perforated mould 7, preferably made of synthetic resin and having a loose bottom plate 9, and the filled mould is transferred to an enclosure 1 where heating and compression is effected by perforated electrodes 2, 3 connected to a high-frequency generator G. The earth electrode 3 is shown connected for vertical reciprocation to a compressed air cylinder 6 although, alternatively, electrode 2 may be the movable member. The pressure in enclosure 1 is preferably superatmospheric, e.g. 1.5 atoms, to prevent overheating of rubber which has become completely de-watered and hot air is preferably circulated within the enclosure to prevent condensation of water on electrodes 2, 3 or the enclosure itself. Furthermore, by decreasing the enclosure gas pressure after the heating stage, any residual water is vaporized. The formed block is removed by raising plate 9 by means of ejector pins 11. In a second embodiment, Fig. 2 (not shown), mould (36) is transferred by an endless belt (33) between converging electrodes (30, 31), the former co-operating with electrically conducting rollers (40) to gradually compress the material. In a third embodiment, Fig. 3 (not shown), a double belt moulding machine is utilized equipped with electrodes (15, 16) and a knife (25) is also provided. In a fourth-embodiment, Fig. 4 (not shown), the material is extruded between electrodes (45, 46), vibrated by an eccentric (49), the feed being a combination of gravitational action, the above-mentioned vibration and the effect of take-off rolls (50, 51). A knife (53) is also incorporated.
Patent GB-1279889-A (GB)
Title: Process for the production of photographic images or printing formes
Inventor: RANZ ERWIN
IPC: G03C1/73
Filed: 1970-11-06
Abstract: 1279889 Photographic processes AGFAGEVAERT A G 6 Nov 1970 [6 Nov 1969] 52834/70 Addition to 1172715 Heading G2C Positive dark images are produced by imagewise exposing a light-sensitive material containing a polyimide of the formula specified in parent Specification to produce a negative dark image, uniformly heating to between 100‹C. and 200‹C. to remove the image and then uniformly re-exposing to produce a positive dark image. The finished product may be used as a printing plate as the areas which have been image-wise exposed become hydrophobic. The hydrophilic areas may be removed if desired. Alternatively open-chain precursors which can be rendered light-sensitive by heat or chemical treatment as set out in parent Specification or by admixture with an isourea as set out in Specification 1274044 may be used.
Patent GB-1294462-A (GB)
Title: Sludge dewatering apparatus
IPC: C02F11/123
Filed: 1969-10-29
Abstract: 1294462 Filter material GENERAL AMERICAN TRANSPORTATION CORP 29 Oct 1969 [4 Nov 1968 13 Aug 1969] 53066/69 Heading B5N [Also in Divisions B1 C1 and F4] A composite filter material used as an endless belt comprises a layer 226 of cellulose or polyurethane foam secured to a backing layer 229 of extruded polypropylene mesh. Layer 235 shown is a separate belt overlying but not attached to the first. Both belts have beaded edge strips of impervious polypropylene.
Patent GB-1456646-A (GB)
Title: Measuring-transducer circuits
IPC: G08C19/04
Filed: 1973-11-16
Abstract: 1456646 Measuring temperature electrically: two-wire telemetry DANFOSS AS 16 Nov 1973 [16 Nov 1972] 53390/73 Headings GIN and G1U A two-line telemetering system includes a transducer circuit having a self-balancing bridge circuit 7 with a temperature sensing resistor 15 and a balancing resistor 16 in adjacent bridge arms, an amplifier 11 across the bridge output diagonal controlling a balancing transistor 10 to pass current I 4  through the balancing lead 9 whereby the voltage drop across the balancing resistor 16 is altered to re-balance the bridge 7. The current I 6  flowing through the transducer circuit, and which is measured at indicating apparatus 3, passes to a comparator bridge circuit 8 having in adjacent branches a Zener diode 19 and a signal producing resistor 20 and, across its output terminals, an amplifier 12 acting on current regulator 6 to rebalance the comparator bridge circuit thereby maintaining constant the bridge current I 6 . It is stated that by providing the Zener voltage in series with the compensating bridge, instead of in parallel therewith, the bridge voltage may be greatly reduced, e.g. to 0.6 volts, bridge resistors of the order of 100 ohms may be used with correspondingly small temperature drift. Also the current for the Zener flows through the compensating bridge circuit to give increased measurement signals. Other embodiments are described.
Patent GB-1376108-A (GB)
Title: Method of sublimatic printing on sheet structures
IPC: B41M5/035
Filed: 1970-11-12
Abstract: 1376108 Sublimable printing with transfers R D GLOVER 11 Nov 1971 [12 Nov 1970 24 Dec 1970] 53851/70 Heading B6C In a printing method a transfer carrying sublimable dyestuff is placed against a copy sheet having suitable affinity and subjected to simultaneous heating and a gas or vapour pressure differential. In the method described in the Specification for printing felt tiles, two at a time, each tile 50, Fig. 1, is placed over a vacuum tank 12 on a grid 48 and is covered by a transfer carrying a design in a sublimable dyestuff such that the design contacts the upper surface of the tile. Over the transfer is placed a heating plate structure 14 containing heating elements and a cooling form 94 and this structure is movable on rails horizontally away from the top of the tank 12 in order that the superimposed transfer and tile may be placed on or removed from the grid 48. Each tank is reciprocable in a vertical direction so as to break or make the necessary seal between the tank, grid, tile, transfer and heating structure.
Patent GB-1282618-A (GB)
Title: Intrauterine contraceptive device
Inventor: LERNER I S
IPC: A61F6/14
Filed: 1969-11-04
Abstract: 1282618 Interuterine contraceptive devices A H ROBINS CO Inc 4 Nov 1969 [14 Nov 1968] 53934/69 Heading A5R An intra-uterine contraceptive device comprises a ring-like part 12 and a member 14, such as screening, grids, imperforate or perforated sheets, or one or more bars, attached to the ring along opposite edge parts of the internal periphery thereof, and means distributed around the ring and extending outwardly from the external periphery thereof for engaging the interus wall and for impeding expulsion of the device. The member 14 may be apertured at 22, 24, and may be accordianpleated with pleats extending to either side of the plane of the part 12, Fig. 8 (not shown), or it may be planar and fill the centre of the part 12, Fig. 12 (not shown). A head region 12-4 of the part 12 may have a dilating ball (52), Fig. 10 (not shown) attached thereto for ease of insertion, and a tail region 12-3 may have a separate or integral indicator string 50. The device is designed to deform three-dimensionally under the action of compressive forces to resist its expulsion from the uterus, spurs 16-1 to 20-1 and 16-2 to 20-2 assisting this resistance. The ring thickness parallel to the plane of the ring is greater at the head region 12-4 than at the tail region which is thicker in this direction than side regions 12-2. The part 12 may be substantially rectangular in cross section, the thickness of head and tail regions perpendicular to the plane of the part 12 being less than their thickness parallel to this plane, and the thickness of the side regions 12-2 perpendicular to said plane being greater than their thickness parallel to the plane of the part 12. The device is preferably made of plastics material incorporating a radio-opaque material and has a metallic coating to resist the formation of calcium deposits. Examples of suitable plastics materials and coatings and of suitable dimensions for the device are given.
Patent GB-1150599-A (GB)
Title: A Fluid Servo Control Device
IPC: F02C9/28
Filed: 1966-12-05
Abstract: 1,150,599. Gas turbine engine fuel systems. BENDIX CORP. Dec. 5, 1966 [Dec.13, 1965], No. 54349/66. Heading F1G. [Also in Division G3] A fluid-pressure servomotor system for actuating the fuel valve of a gas turbine engine, comprises proportional and integrating mechanisms actuating the controllable member in response to an error input signal and means responsive to at least one condition of operation of the engine to vary the respective gains of the mechanisms. In the preferred embodiment, the position of a piston 66 having a restricted by-pass 78 is connected to the fuel metering valve and follows the movement of a valve 84 resting on a lever 102 actuated both by a piston 108 forming the output member of the integrating mechanism and by further levers 114 and 124 forming part of the proportional mechanism. A valve 156 controls the supply of fluid to the piston 108 and is connected together with the lever 124 to a stem 148 which may be shifted through a lever 196 and a cam mechanism 192 by a speed request signal from a throttle lever 60 and through a cam mechanism 194 by an engine speed signal from a servomotor 96 which moves the cam axially. A servomotor 98 rotates the cam to compensate for the effect of engine temperature. A speed anticipation signal, provided by axial movement of a piston 134, causes expansion of a bellows 130 connected to the lever 124. A servomotor 234 rotates the valve 156 to vary the rate of flow for a given valve displacement and thus the gain of the integrating mechanism while a servomotor 256 shifts a fulcrum 116 for the lever 114 to vary the gain of the proportional mechanism. Both servomotors are responsive to compressor discharge pressure. When the throttle 60 is rotated to change speed, the lever 102 allows a follower 86 to be pushed by a spring 92 into engagement with an acceleration cam 88. This determines the position of the valve 84 and hence of the piston 66 while the valve 156 causes the piston 108 to move at a rate dependent on the position of the servomotor 234. As the engine approaches the selected speed, the servomotor 96 causes the cam 194 to act through a follower 204 and the lever 196 to lift the stem 148 returning the valve 156 to its null position and the follower 86 to a position clear of the cam 88.
Patent GB-1379414-A (GB)
Title: Forming an epitaxial layer on a semiconductor substrate
IPC: H01L21/208
Filed: 1972-11-24
Abstract: 1379414 Epitaxial deposition WESTERN ELECTRIC CO Inc 24 Nov 1972 [29 Nov 1971] 54380/72 Heading BIS  An epitaxial layer is deposited on a semiconductor substrate by first forming in a solution reservoir a saturated solution from which the layer is to be grown, then contacting the semiconductor substrate contained in a growth chamber in a lower sliding member, with a portion of the solution not greater than 3 millilitres thick which is isolated from the solution reservoir by sliding an upper sliding member, moving the upper and lower sliding members away from the solution reservoir containing the solution, reducing the temperature of at least the solution and the substrate to a growth temperature and subsequentally when the layer is grown, removing the solution from the layer. If desired the temperature of the reservoir and growth chamber may be reduced together and the solution removed from the layer by a gaseous stream. Several layers may be grown. The preferred materials are GaP-GaAS with dopants Zn, Se and Te.
Patent GB-1483748-A (GB)
Title: Feeding and dispensing apparatus for fibrous material
IPC: D21B1/08
Filed: 1974-12-18
Abstract: 1483748 Mixing plant SUOMEN VANU TEHDAS-FINNWAD Ltd OY 18 Dec 1974 [21 Dec 1973] 54757/74 Heading B1C Apparatus for proportioning and mixing cellulose fibres and flakes comprises apparatus (1, Fig. 1 not shown) for shredding dry sheet cellulose, a shredder (3) for mechanical woodpulp, and optionally a cutter with (6) for production waste from wood processing, respectively supplied by feeders (2, 4, 5) which may be controlled to produce a pre-selected mix. The materials are pneumatically conveyed through at least one cyclone as 7, 8 to a mixer and distributor 9 the level in which is controlled by an ultrasonic level sensor 10 which controls the motors of the feeders (2, 4, 5). The mixer 9 has fixed rods 15 and rotating arms 14, and discharges into one to four twin star-wheel metering devices 17, whence the material is pneumatically conveyed to a cyclone 20 at the top of a rectangular tube 22, at the bottom of which is a pair of rotors 31, 32 rotating in opposite senses and each having double helical projections. In a modification, see Fig. 4 (not shown) the rotors may have four stepped helical projections. They discharge to a smaller mixing roller 34 which is provided with four vanes (37, Figs. 6, 6A not shown) of e.g. balata belting. The mixture thence passes to a processing machine. The level of material in the tube 22 is controlled by a photocell 23 which controls the star-wheel metering device 17, and the tube has a door 25 hinged at 24 and struck outward blows by a hammer 29. In operation a demand from a processing machine starts the motor for the rollers 31, 32, 34 and for the hammer 29. Fall of level in the tube 22 causes the photocell device 23 to start the star-wheel metering device 17. The ultrasonic level sensor 10 then starts the material feeding devices.
Patent GB-1381729-A (GB)
Title: Electrical switches
IPC: H01H13/48
Filed: 1971-11-26
Abstract: 1381729 Snap-action switches SUMLOCK ANITA ELECTRONICS Ltd 17 Nov 1972 [26 Nov 1971] 54945/71 Heading H1N Push-button means for operating an electrica' switch 1<SP>1</SP>, Fig. 4, of the snap-action bowed disc type comprises a pair of relatively slidable push-button members 30<SP>1</SP>, 38<SP>1</SP> connected by a spring 36 whereby the front part of the movement of the member 30<SP>1</SP> is absorbed by the spring 36 before the second member 38<SP>1</SP> moves to operate the switch l<SP>1</SP>. The coil spring 36 may be replaced by a resilient pad (not shown). The switch l<SP>1</SP> comprises a snap-action bowed disc 26 of beryllium copper which normally rests on a pair of U-shaped gold plated wires 14 soldered to the same circuit part (10), Fig. 2 (not shown), of a printed circuit boatd 6. On operation, pressure from a projection 47 on the second push-button member 38<SP>1</SP> acts through an adhesive sheet 28 of transparent insulating material. The actuator may be of the latched "push on" "push off" type.
Patent GB-1126360-A (GB)
Title: Method of joining metal sheets to form roll-up members
IPC: B21D39/02
Filed: 1965-12-30
Abstract: 1,126,360. Seaming. G. A. PEACOCK. 30 Dec., 1965 [6 Jan., 1965], No. 55157/65. Heading B3J. [Also in Division E1] A method of making a flexible joint between the edges of metal sheets in a roll-up member, e.g. a door or shutter, comprises interleaving the edges of the sheets and sealing the interleaved edges by the application of pressure. Double-walled channels 2, 3, Fig. 1, may be formed in the edges which are interleaved, Fig. 1A, or one channel 4, Figs. 2, 2A, may be only partially double-walled. The channels may be of arcuate section, Fig. 4 (not shown), and one channel may be only partially formed, Figs. 3 and 5 (not shown).
Patent GB-1203980-A (GB)
Title: Improvements in or relating to the removal of scale from metal objects
Inventor: LENZ ARNOLD
IPC: C23G3/00
Filed: 1967-12-06
Abstract: 1,203,980. Electrolytic pickling. DYNAMIT NOBEL A. G. Dec. 6, 1967 [Dec.10, 1966], No.55495/67. Heading C7B. Scale is removed from a scaled metal object by pickling the object in an alkali metal hydroxide melt (e.g. NaOH and/or KOH) containing sodium hydride, and thereafter subjecting the pickled object to anodic and subsequent cathodic treatment in an aqueous alkaline solution or a melt containing at least 60% by weight, based on the alkaline solution or melt of an alkali metal hydroxide or mixture of alkali metal hydroxides (e.g. NaOH and or KOH) at a temperature which is greater than, but not more than 25 centigrade degrees greater than, the solidification point of the alkaline solution or melt, whereby the scale is completely or substantially completely removed. The "solidification point is the temperature at which, when the alkaline solution or melt is being cooled, solid material is first precipitated out. The anodic and cathodic treatments may employ currents of 1000 to 1500 amps for 5 to 20 minutes. After descaling, an object may be washed in cold water and dipped in an aqueous solution of calcium hydroxide. The Fig. illustrates descaling of a coil of wire 4, suspended from an electrode 3 of one polarity, and adjacent electrodes 5, 6 of opposite polarity. Half way through each of the anodic and cathodic treatments the coil of wire 4 is rotated so that a different portion is in contact with the part 3.
Patent GB-1209044-A (GB)
Title: Process and apparatus for preparing ammonia and chlorine from ammonium chloride
IPC: C01B7/05
Filed: 1967-12-07
Abstract: 1,209,044. Ammonia; chlorine. PRODUCTS CHIMIQUES PECHINEY-SAINT-GOBAIN. 7 Dec., 1967 [8 Dec., 1966], No. 55654/67. Addition to 1,098,361. Heading C1A. The process as in the parent Specification (wherein ammonia and chlorine are prepared from ammonium chloride by heating it in contact with a mass containing partially reduced iron oxide or manganese oxide and an alkali metal chloride to liberate ammonia and the residual mixture is oxidized with a free oxygen containing gas to liberate chlorine), is modified in that the oxidation of said residual mixture is carried out in an apparatus incorporating a plurality of fluidized beds separating a series of compartments in which the mixture being treated circulates in countercurrent to the free oxygen containing gas which both oxidizes the mixture and maintains it in a fluidized condition. The apparatus for the oxidation may be a tower of the type shown in Fig. 1, containing a plurality of perforated plates, as 6a, pipes, as 7a, through which material may pass from one fluidized bed to another, and inlets and outlets 2 and 3 for solids and 4 and 5 for gases respectively, and possibly an inlet 8 for recycling depleted gas. Chlorine-containing gas may be removed from the compartment wherein the chlorine concentration is highest, and, after removal of Cl 2  by suitable methods, the gas, with depleted chlorine content, may be recycled to a compartment of similar chlorine concentration, by an inlet 8.
Patent GB-1419508-A (GB)
Title: Sheet stack receptacle
IPC: B65H1/04
Filed: 1972-12-01
Abstract: 1419508 Feeding sheets RANK XEROX Ltd 1 Dec 1972 55725/72 Heading B8R Disclosure in the present Specification is to be found in Specification 1,419,510, but the claims are directed to the pile trays or cassettes, and in particular the movable edge margin guides thereof.
Patent GB-1436958-A (GB)
Title: Purifying and stabilising malonic acid dinitrile
IPC: C07C253/32
Filed: 1973-12-03
Abstract: 1436958 Malononitrile DEUTSCHE GOLDUND SILBER - SCHEIDEANSTALT 3 Dec 1973 [8 Dec 1972] 55978/73 Heading C2C Malonic acid dinitrile produced from cyanogen halide and acetonitrile which contains fumaric acid dinitrile is recrystallized in the presence of benzonitrile from an aliphatic alcohol or dialkylether with a branched or unbranched carbon chain. Isopropanol or diisopropyl ether may be used and the product is in a pure, crystalline, colourless, stable form. The recrystallized dinitrile may be remelted and distilled in the presence of an acid such as phosphoric, tartaric, malonic, citric or oxalic acid. Examples describe the use of isopropanol, diisopropyl ether, amyl alcohol and n- and isobutanol, and a flow diagram of a continuous process is given.