baber/WOPTO huggingface dataset:
Patent GB-1453231-A (GB)
Title: Sense amplifier
IPC: G11C11/41
Filed: 1974-03-20
Abstract: 1453231 Transistor logic circuits INTERNATIONAL BUSINESS MACHINES CORP 20 March 1974 [18 April 1973] 12245/74 Heading H3T A sense amplifier comprises : two pairs of cross coupled field effect transistors 21, 22; means interconnecting the pairs to form node A, B one of which at least constitutes an output; active input means QP3, QP4 connected to respective nodes; pulse source means QN3 connected to an electrode of each FET of one pair, e.g. the sources of QNI, QN2; and means for biasing the input means QP3, QP4 and the pulse source means QN3 to opposite states of conduction. The means QP3, QP4 and the means QN3 may be opposite conductivity type FET's biased from a single source L, or alternatively there may be the same conductivity type biased from separate sources (L A , L B , Fig. 5, not shown). The memory cells of the matrix, detailed in Fig. 1 (not shown) have one line (15) at Ov and the other (16) at +V when storing data. Read. Input S is made Ov turning or QP5, QP6 and bit lines 12, 13 are both connected to +V. Input L is made Ov turning on QP3, QP4 to connect the input nodes A, B to lines 12, 13. If cell N is selected by energizing ROW N line, and if this cell has its left hand line (15) at Ov, then current will flow from line 15 to earth through the cell (QN10 and QN12). Input S is now made + V and QP5, QP6 turn off allowing the charge on line 15 to fall as current flows from it into the cell N. The potential at node A will fall with it and when L is set to + V QN3 turns on the set the latch 21, 22 to the state QN1, QP2 on and QN2, QP1 off. At the same time, QP3, QP4 turn off to isolate the amplifier from lines 12, 13 so that an output can betaken from A and/or B without loading lines 12, 13. Write.-Input S is made Ov turning on QP5, QP6 to charge lines 12, 13 both to +V. Input S is then returned to Ov. If one of the lines W 0  or W 1  is now made + V either QN5 or QN6 will be turned on, and either line 12 or line 13 will fall to Ov to set the latch in the selected cell to the appropriate state. QP3, QP4 are both held off by making input L + V so that no loading is produced by the amplifier.
Patent GB-1268933-A (GB)
Title: A method of producing carbon fibre re-inforced composite materials
Inventor: SLATOR WILLIAM JOSEPH
IPC: D01F11/14
Filed: 1969-03-07
Abstract: 1,268,933. Resin-fibre composite. ROLLSROYCE Ltd. 10 Feb., 1970 [7 March, 1969], No. 12303/69. Heading D1R. [Also in Divisions Cl and C3] Carbon fibres which have been heat treated in a partial vacuum are formed into a sheet and sprayed with an epoxy resin, optionally together with a curing agent. The sheet so formed is dried, partially cured at 80‹C and hot pressed at 750 p.s.i. and 165‹C. The fibres may be graphitized by heating at 1000‹C before spraying with the resin. The fibres may be produced by carbonising nylon, rayon or polyacrylonitrile fibres.
Patent GB-618946-A (GB)
Title: Improvements in and relating to cemented carbide piston rings
IPC: F16J9/26
Filed: 1945-05-16
Abstract: 618,946. Making piston rings. BRITISH THOMSON-HOUSTON CO., Ltd. May 16, 1945, No. 12328. Convention date, May 19, 1944. [Class 83 (ii)] [Also in Group XXVI] A piston ring of cemented carbide having capillary grooves in the outer edge is made by extruding a strip of the composition, rolling the grooves into one face, sintering it and then reheating at a temperature of about 1350‹ C. and bending it to form an open ring. The reheating and bending may be carried out as described in Specification 588,305 or, alternatively, the strip may be heated by highfrequency induction heating or by a flame. The finished ring has an average density preferably not exceeding that of steel or cast iron and its weight may be controlled by making it hollow as shown in the cross-sections, Figs. 3 and 4, the strip in such a case being extruded around a mandrel. A series of parallel oil grooves 7 or 8 are formed either circumferentially or helically on the outer face, by means of a knurled roller before the sintering of the strip. If the helical grooves are approximately 1 inch long Î .01 inch Î .01 inch it is stated that no gas leak occurs. In a modified method, the extruded strip is wound to circular shape in a groove formed in a mandrel before sintering, a coating of paraffin being used on the inside of the groove to prevent breakage of the strip during shrinking.
Patent GB-678982-A (GB)
Title: Improvements in or relating to swinging doors
Inventor: WRIGHT WILLIAM FRANCIS
IPC: B60J5/06
Filed: 1950-05-17
Abstract: 678,982. Vehicle doors. B. E. T. FEDERATION, Ltd. April 25, 1951 [May 17, 1950], No. 12356/50. Class 103(ii) [Also in Group X] A swinging door a, e.g. for transport vehicles, pivoted about its centre line or on axis b adjacent thereto is supported on an arm d rotatable about a fixed axis f parallel to the pivoting axis with the edges of the door guided in fixed guide tracks i, j disposed at or about 90 degrees to each other, a fixed guide track i operative for the major extent of the door movement being provided for one edge only, the other edge being guided only by a short length of track j. The axis b is offset from the plane of the door. One end of arm d is rigid with a tube e which pivots about the fixed vertical axis f, and the other end embodies the pivot b. Each side edge of the door carries a bracket g, g' embodying a roller h, h' offset from the central door plane and axis b. Roller h' engages the fixed guide track i, above and adjacent to the door, when the door is in the closed position. During the final opening movement roller h engages track j and roller h<SP>1</SP> leaves track i, so that one roller only is engaged at any time. At the commencement of movement the rollers operate with a trailing or castor action. Rollers and guides may also be fitted at the base of the door, and a similar mechanism may also be fitted to a second co-operating door. A hand-rail may be fitted to the inside of the door. The guide tracks may be curved.
Patent GB-771917-A (GB)
Title: Improvements in fasteners for locking lids to cases, boxes or the like
IPC: E05C19/08
Filed: 1953-05-05
Abstract: 771,917. Hasp fastenings. RICHARDSON, G. S. Aug. 5, 1954 [May 5, 1953], No. 12395/53. Class 44. A fastener for locking a lid 6 to a case, box or the like 12 comprises a first plate 2 and a second plate 8 for attachment to the lid and to the case, box or the like, or vice versa, a third plate 18 which is directly hinged to the first plate and which when the fastener is closed, lies against the second plate with one or more abutments 22 on the third plate near the hinge engaging one or more abutments 24 on the second plate to assist separation of the first and second plates, and a catch 28 for retaining the third plate against the second plate, the relative positions of the hinge and abutments being such that on closing the fastener the action of engaging the abutments and swinging the third plate against the second plate draws the first and second plates towards one another. As shown, the catch 28 is a turn-button which passes through a slot 30 in the plate 18. Rotation of the turn-button is limited by stops 32 struck from the plate 18 and these stops and the turnbutton are apertured so that a sealing wire 34 can be passed through them. As shown, the plate 18 is provided with two of the abutments 22 which engage two of the abutments 24 on the plate 8. Specification 691,220 is referred to and Specification 741,665 is referred to in the Provisional Specification.
Patent GB-633882-A (GB)
Title: Manufacture of alkali metal cyanides
IPC: C01C3/00
Filed: 1947-05-08
Abstract: <PICT:0633882/III/1> In the production of an alkali metal cyanide by the reaction of alkali metal carbonate, carbon and nitrogen, carbon monoxide produced in the process is burned with the theoretical amount of air and the heat produced is used to preheat gases entering the reaction zone to above the reaction temperature.  In one embodiment, a finely-divided mixture of carbon, iron oxide (catalyst) and sodium carbonate is charged via hopper 4 to a reaction vessel 1 which may comprise a number of separate containers or be divided into compartments by perforated grids. Air and carbon monoxide, supplied by lines 29 and 30 respectively, are burnt at burners 33 in the upper vessel 21 of a pebble heater until the temperature therein is 1800-2000 DEG  C., when the supply is shut off, conveyor 24 is started and pebbles, flowing through vessels 21 and 22, heat a nitrogen-carbon monoxide mixture pumped (36) from a gas holder 38. This gas mixture, heated to 990-1000 DEG  C., enters vessel 1 by a distributer 40, "fluidises" the solids therein, leaves the vessel by line 6 and after separation of solids at 7 is divided into two streams, one going to storage at 38, the remainder being pumped through a heat exchanger 12, separators 18 and 20, and burnt at 33 with air from pump 37 and heated by reacted solids from 1 passing through the exchanger 12. Carbon dioxide is removed from the combustion products of the pebble heater in a scrubber 28, from which issues a gas, largely nitrogen, a part of which is returned to the system.  Additional heat may be supplied directly to the reaction vessel, e.g. by adding carbon monoxide or water gas through line 47. The solids may, if desired, be passed co-currently with the gases. The preferred quantities used are (a) more than three times as much nitrogen as carbon monoxide; (b) at least four times the p theoretical quantity of carbon, and (c) at least the same weight of ferric oxide as sodium carbonate.  Sodium and potassium cyanides or a mixture of the two may be made.
Patent GB-1092594-A (GB)
Title: Improvements in or relating to control valve devices for pressure fluid operated motors
IPC: F15B13/06
Filed: 1966-03-22
Abstract: 1,092,594. Steering vehicles. ATLAS COPCO A.B. March 22, 1966 [April 5, 1965], No. 12498/66. Heading B7H. In a four-wheel-drive vehicle having a separate pneumatic or hydraulic motor driving the wheels on each side, the steering being obtained by driving the wheels at different speeds, a control valve device has a first valve housing 2 and a slave valve housing 3 containing tubular valve sleeves 4 with ports 5, 6 communicating with delivery passages 7, 8 and a distributing valve member 14 movable in each sleeve 4 and having an intermediate portion forming a toothed rack 23 meshing with teeth (24) on a shaft 25 and with a similar shaft 58 respectively and the shaft being so connected that the valve members 14 may be moved in the same direction or in opposite directions or moved to a neutral position to allow the vehicle to be towed.
Patent GB-1262666-A (GB)
Title: Improvements in drill boom structure
IPC: E21B15/04
Filed: 1969-03-10
Abstract: 1,262,666. Rock drills. ATLAS COPCO A.B. 10 March, 1969 [12 March, 1968], No. 12474/69. Heading B3C. [Also in Division F2] A support boom structure for a rock drill comprises a boom 10 swingable by hydraulic cylinders (not shown) laterally and vertically, a boom head 11 swingable by cylinder (not shown) via rod 17 about axis 15, a carrier 12 swingable by cylinder 19 about axis 16 which is perpendicular to axis 15, and a feed bar 13 slidable relative to the carrier by means of hydraulic cylinder 23. The carrier 12 comprises a casing 25 containing an hydraulic motor 30 and a plate 22 connected to journal members 24, 26 which are rotated relative to the casing 25 by the motor to pivot the feed bar about a third axis parallel to the feed bar axis. The motor comprises a piston 34 with a longitudinally splined rod 37 and a helically splined rod 32, which rods respectively co-operate with a longitudinally splined head 36 and a helically splined nut 33. The head 36 is fixed with respect to the casing 25 and the nut is mounted in one end of a rotatable driving member 41 which at its other end engages with the journal 24. Hydraulic fluid fed to either side of the piston 34 displaces the piston and thus effects rotation of the feed bar with respect to the casing 25. A lock valve 50 maintains the feed bar fixed with respect to the casing 25 until fluid is fed via conduit 48<SP>11</SP> or 4911, valve 52 or 51 and conduit 481 or 491 to move the piston 34. During piston movement the other conduit 49<SP>1</SP> or 481 is connected via valve 51 or 52 and conduit 49<SP>11</SP> or 48<SP>11</SP> to a sump. Flow of fluid in conduits 4811, 49<SP>11</SP> is controlled by a four way valve (not shown). In an alternative embodiment (Fig. 5, not shown) the carrier 12 is positioned with the axes of the boom and the axis 16 lying in a vertical plane. A further embodiment includes a telescopic boom and the feed bar in this embodiment can be adjusted out of parallel alignment with the carrier by means of piston/cylinder (61), the feed bar being pivotally connected to the rear journal member (26), and yet another embodiment (Fig. 9, not shown) includes a frame (60) mounted on a first carrier (62) similar to carrier 12 and a second carrier (63) parallel to the first carrier and mounted on the frame. The feed bar is mounted on the second carrier.
Patent GB-455100-A (GB)
Title: Improvements relating to gas lighters
IPC: F23Q9/00
Filed: 1935-04-26
Abstract: 455,100. Gas - lighters. WILLMOTT, A. R., Central Buildings, Station Approach, Coulsdon, Surrey. April 26, 1935, No. 12580. [Class 75 (iii)] In a gas-lighter, such as described in Specification 406,473, in which a torch 1 is held when not in use in a tube 6 secured as by a set-screw 7 in a collar 5 on the spindle of the gas-cock, the torch is retained in the tube by a gravity-operated catch 9, or a leaf spring on the cock casing, engaging a flange 12 so that it can be withdrawn when the cock is closed and is released on opening the cock. The catch 9 consists of a U- shaped member 11 carried by arms 8 bent over at the end to engage depressions or holes 10 in the tube. The Provisional Specification describes also a leaf-spring secured to the tube.
Patent GB-109271-A (GB)
Title: Improvements in or relating to the Treatment of Ores.
IPC: C22B1/02
Filed: 1917-09-01
Abstract: 109,271. Krupp Akt.-Ges. Grusonwerk, F., (Assignees of Kauffmann, W.). Sept. 15, 1915, [Convention date]. Roasting.-Ores are roasted in a rotary furnace having air-supply openings distributed along its length, the supply through each opening being graduated according to the combustion taking place in its vicinity. In the construction of furnace shown, the air is delivered through tuyere openings 2 fed from mains 4 through valve-controlled branches.
Patent GB-1408077-A (GB)
Title: Cured resin and process for producing same
IPC: C08G18/72
Filed: 1973-03-16
Abstract: 1408077 Production of cured mixed resins HODOGAYA CHEMICAL CO Ltd 16 March 1973 [18 March 1972] 12667/73 Headings C3P and C3R A cured resin mix is produced by reacting in the presence of an addition polymerization catalyst, an active hydrogen containing compound, with a solution in a polymerizable unsaturated monomer of the NCO-group containing distillation residue obtained in the production of tolylene diisocyanate from tolylene diamine or its salt and phosgene. Examples of suitable monomers are styrene, methyl methacrylate and vinyl acetate and the use of these is exemplified. Suitable active hydrogen containing compounds are polyether polyols, dipropylene glycol, neopentyl glycol, furfuryl alcohol, castor oil, a hydroxy terminated unsaturated polyester glycol, other hydroxy group containing unsaturated polyesters, water and dichloro-4,4<SP>1</SP>-diamino diphenyl methane, all of which are used in examples. Where water is used in the examples, it is mixed with sand. Addition polymerization initiators used are those well-known in the art such as methyl ethyl ketone peroxide and benzoyl peroxide. The cured product may be in the form of an article.
Patent GB-1078392-A (GB)
Title: Improvements in and relating to steam generators
Inventor: BELL ALAN
IPC: F22B29/06
Filed: 1963-03-29
Abstract: 1,078,392. Forced flow steam boilers. FOSTER WHEELER Ltd. April 6, 1964 [March 29, 1963], No. 12677/63. Heading F4A. A once-through forced circulation boiler heated by gaseous reactor coolant contains one or more vertical tubular heat exchange elements each providing for the water to be evaporated, a preheating, an evaporating and a superheating section P, EV and S respectively, the tubes 14 in the various sections having such diameters and being so arranged that the crosssectional area of fluid flowpath through the preheating and superheating sections P and S respectively is smaller than that through the evaporating section EV. Each section comprises one or more clusters of tubes such as 10, 12, the clusters and sections being interconnected by welding together the tube plates 16 on their ends, against which abut connecting members 18 having grooves 20 which interconnect pairs of tubes so that the fluid flows in series through the tubes in the preheating and superheating sections and in parallel through the tubes in the evaporating section. U-bends may be used in place of the tube connectors 18. Thus in the preheating and superheating sections the cross-sectional area of fluid flow is that of a single tube, whilst in the evaporating section it is the sum of the areas of all the tubes. Alternatively the preheating and superheating sections may have more than one fluid flow path providing the number is less than for the evaporating section. The tube cluster may be two-dimensional or three-dimensional such as an hexagonal cluster connected by circular or hexagonal tube plates 16, individual tubes being kept sprung apart by spacer plates 54.
Patent GB-234125-A (GB)
Title: Improvements in carburettors for internal combustion engines
IPC: F02M19/08
Filed: 1925-05-15
Abstract: 234,125. Heyners, B., and Mandahl, T. F. May 16, 1924, [Convention date]. Void [Published under Sect. 91 of the Act]. Spray carburettors.-Annular members 5, 6, 7 are located in the casing 3 so as to form a choke passage 8 into which a mixture of fuel and air is delivered through a narrow peripheral slit 13. The fuel and air are conveyed through annular chambers 9, 10 and narrow annular channels 14, 15, meeting at an angle, and of which 14 leads to the float chamber 1 through conduits 16, 17, 19 and a. nozzle 18, and 15 leads to the atmosphere through conduits 21, 20. The fuel conduit may be provided with a controllable air inlet 22. The air conduit may be provided with a preferably controllable fuel inlet, or both conduits may be provided with air and fuel inlets. In the modification shown in Fig. 3, the mixture of air and fuel is admitted to a number of air passages 23. The chambers 9, 10 serve as reservoirs to facilitate starting.
Patent GB-378023-A (GB)
Title: Improvement in thermionic switching system
IPC: H04J3/04
Filed: 1931-05-01
Abstract: 378,023. Thermionic distributers. COMMUNICATION PATENTS, Inc., 60, Broadway, New York, U.S.A. May 1, 1931, No. 12867. Convention date, Oct. 4, 1930. [Class 40 (v).] A system for the multiplex transmission of telephone, television, and other signal currents by means of a thermionic distributer comprises a crystal-controlled oscillator 42 operating at 100 k/c and rendering operative alternately oscillators 44, 45 working at 200 k/c. Each of these similarly controls a pair of oscillators working at 400 k/c and each of these renders operative alternately a pair of microphone, television, or like circuits 1 to 8 feeding a common transmission line to which is fed also for synchronizing a portion of the current generated by the master oscillator. Wireless or wired wireless may be employed for transmission to the receiving station at which the synchronizing current is separated from the signals and controls a master oscillator which controls in the manner described above further oscillators to render operative at the appropriate instants the various receiving instruments 1 to 8. Specification 368,330 is referred to.
Patent GB-836009-A (GB)
Title: Improvements in or relating to tiles
IPC: E04F13/18
Filed: 1956-04-26
Abstract: 836,009. Facing tiles. ADIE, G. M. July 25, 1957 [April 26, 1956; Feb. 18, 1957], Nos. 12923/56 and 5484/57. Class 87(1) In a facing tile consisting of a thin plate 10 intersecting ribs 12 projecting from its rear face to define cells 14, the total area of the side faces of the cells is not less than the area of their bases. Alternative arrangements of ribs comprise (a) straight ribs defining square, hexagonal or rhomboidal cells, (b) sinuous ribs, Fig. 3 (not shown), and (c) a set of concentric ribs intersecting a radial set, Fig. 4 (not shown). Apertures 16, 18 may be provided in the internal ribs and marginal flange respectively, or the upper edges of the ribs may be recessed as at 20. In one form, Fig. 5 (not shown) the marginal flange is inset from the edges of the plate. The ribs and plate may be moulded integrally from polystyrene &c. or they may be separate and stuck or clipped together the plate consisting of linoleum, aluminium, stainless steel, polystyrene &c. while the ribs are of metal or polystyrene. The Provisional Specifications describe also tiles made of polyvinyl chloride, glass or other vitreous material, pottery. china clay, papier mache and resin bonded compositions. The tile may be translucent and its face may be corrugated. According to the first Provisional Specification the recesses 20 may extend throughout the depth of the ribs. In a modification, Fig. 13, the face of the tile has ribs 10 forming shallow cells for receiving mosaic infillings 12. In a further modification, single cells of square or hexagonal shape are assembled on a card or flexible membrane.
Patent GB-1368520-A (GB)
Title: Warp knitted fabric having laid in weft yarns
IPC: D04B21/00
Filed: 1972-03-20
Abstract: 1368520 Knitted fabrics KARL MAYER TEXTILMASCHINENFABRIK GmbH 20 March 1972 [26 March 1971[ 12925/72 Heading D1K A warp-knitted fabric is made up of chains and laid-in wefts wherein two or more wefts 2 are laid into separate chain loops formed in the same course which loops are then knitted together.
Patent GB-140271-A (GB)
Title: Apparatus for cooking and heating purposes
IPC: F24C5/20
Filed: 1919-05-23
Abstract: 140,271. Bizzanelli, C. D. May 23, 1919. No Patent granted (Sealing fee not paid). Portable oil stoves; cooking-stoves.-A portable cooking and heating stove comprises a chamber b forming a receptacle for a wickless stove b' and having a cover c formed as a shallow hollow box which, when pulled out, as shown, and supported by a strut c<5> or by other means, forms a hotplate. The hot gases pass into this box at the open inner end and out through the perforated front plate c<4>. An oven a may be included, into which the chamber b packs for transport.
Patent GB-167305-A (GB)
Title: Improved dynamo electric generator for lighting cycles and other road vehicles
IPC: H02K21/34
Filed: 1920-05-11
Abstract: 167,305. Exact Manufacturing, Ltd., and Moores, H. T. May 11, 1920. Magneto - electric machines.-In dynamo-electric generators of the kind used for lighting on cycles &c., bolts h are arranged in the spaces between the poles of the permanent magnets c, d so as to extend from end to end of the casing a and through the end caps j, k, whereby the caps are secured in position. The casing a, magnets, pole-pieces f, g and bolts are rigidly secured together by rivets i.