baber/WOPTO huggingface dataset:
Patent GB-1158679-A (GB)
Title: Improvements in or relating to Toy Construction Kits
IPC: A63H33/08
Filed: 1967-11-09
Abstract: 1,158,679. Toy construction kit. PARKER INDUSTRIES Ltd. 9 Nov., 1967 [9 Oct., 1967], No. 51035/67. Heading A6S. A toy construction kit comprises elements of two types, the first (Fig. 23) formed with a plurality of holes, 24, for connection by rods and/or nuts and bolts and the second (Figs. 7, 16) formed with co-acting projections, 26, and recesses, 27. Elements of the first type are formed with additional holes, 25, adapted to receive either the projections or elements of the second type, or separate pegs (Fig. 9) adapted in art to engage in the recesses 27. Elements of the second type may be formed with holes, 28, arranged to coincide with the holes, 24, of the first elements. The holes 28 and 24 may be of equal diameter. The elements of the first type may also be formed with additional slots, 49, and notches, 50, so that the elements may be connected together without the aid of rods and/or nuts and bolts.
Patent GB-1085950-A (GB)
Title: Longwall mining method and apparatus
Inventor: LOW ALEXANDER CHARLES
IPC: E21C27/02
Filed: 1963-12-27
Abstract: 1,085,950. Mineral-mining installations. MAVOR & COULSON Ltd. Jan. 1, 1965 [Dec. 27, 1963], No. 51086/63. Heading E1F. To permit of longwall mining of a mineral seam without the necessity of separately forming stable holes at. the ends of the longwall face of the seam there is provided a mining machine having at either end of the motorcontaining body of the machine a cutter disc which is positioned laterally of the face side of the body towards the face and has picks projecting from its periphery and from the side nearest the face. Such cutter means can be sumped into the face before making a cutting traverse of the face.
Patent GB-1509790-A (GB)
Title: Connecting concrete pipe elements
IPC: F16L25/00
Filed: 1975-12-17
Abstract: 1509790 Coupling concrete pipes NIPPON CONCRETE INDUSTRIES CO Ltd 17 Dec 1975 [11 Aug 1975] 51637/75 Heading F2G A concrete pipe comprises two concrete pipe elements 31, Fig. 3A, placed end to end, an end plate 32 attached to the facing end of each pipe element, an annular recess 35 formed between the end plates at their outer peripheries, and a split ring 37 situated in said recess and being connected to the end plates. In Fig. 3A the pipe elements have tensional reinforcements 33 to which the end plates are attached. The recess 35 extends to the pitch circle of the tensioning reinforcements 33 and the end plates 32 are welded together thereat. A reinforcing steel band 34 is connected to each pipe element 31 and is welded to the end plate 32. Fig. 4A shows another embodiment with a metal fitting 46 being positioned between the end plates. The fitting consists of flanges 44 connected to the pipe elements by bolts 47, cylinder 49 welded to flanges 44 and radial arranged ribs 45. Split ring 48 encloses the fitting 46. Fig. 5A shows end plates 53 having axial projections 54, 58 respectively. The gap between the end plates is closed by split ring 55. In a further embodiment Fig. 6A (not shown) the end flanges have axial projections that project and abut each other. Also one of the projections has a guide (68) attached to its radially inner surface which also contacts the radially inner surface of the other projection. Fig. 7 shows the embodiment of Fig. 3A with a groove 39 filled with a waterproof layer 40 of, for example, synthetic resin or mortar.
Patent GB-1509599-A (GB)
Title: Pulse width modulated signal amplifiers
IPC: H03F3/20
Filed: 1975-12-17
Abstract: 1509599 Pulse width modulated amplifiers SONY CORP 17 Dec 1975 [20 Dec 1974] 51646/75 Heading H3T In a pulse width modulated amplifier a pair of transistors Q 1, Q2 are connected in series between first and second supply terminals + B 1-B1 and have an output terminal 8 connected via a low pass filter 9 to their common emitters, each transistor having an inverse diode D11, D21 and a voltage limiting arrangement connected between the base and collector. The arrangement is such that the output voltage Vo during each half cycle of a pulsewidth modulated wave at input terminal 7 is independent of the direction of current in the filter 9. As described, this is achieved by batteries E1, E2 having a voltage at least equal to V f  + V CE(sat) . This ensures that the voltage VO is independent on whether the output current IO is flowing via the transistor Ql, Q2 or via the inverse diode D11, D21, and thus minimizes amplitude distortion in the signal supplied to the speaker 10 due to the reversal of direction of current Io during each half cycle because of charge storage effects in transistors Ql, Q2.
Patent GB-1108725-A (GB)
Title: Method of manufacturing rolls
IPC: B29C53/56
Filed: 1966-11-18
Abstract: 1,108,725. Rollers. UNIROYAL Inc. 18 Nov., 1966 [10 Dec., 1965], No. 51661/66. Heading F2U. A roll is formed by applying a layer of uneured liquid polymer to a film F of cured, or partially cured, polymer and winding under tension on to a core 19. The tension applied to the film determines the thickness of the liquid layer and a pressure roll 25 ensures uniformity of the layer. The roll is then cured or allowed to cure, after which it may be surface ground to desired demensions and finish. A bank 21 of the liquid polymer is maintained between the film and the roll to prevent entrapping of air in the roll. The film and the liquid are preferably of the same polymeric material.
Patent GB-1434961-A (GB)
Title: Integrated circuit arrangements
IPC: H01L27/06
Filed: 1973-11-08
Abstract: 1434961 Semi-conductor devices PLESSEY CO Ltd 25 Sept 1974 [8 Nov 1973] 51856/73 Heading H1K An I.C. for multicollector logic operation includes at least one pair of superposed transistor structures and comprises first, second and third superposed semiconducting layers 1-3, the second layer 2 being interposed between and of opposite conductivity type to the first and third layers 1, 3 and having a doping density higher than that of the first layer 1 but lower than that of the third layer 3, at least one electrical contact 4 on a surface of the first layer 1, a plurality of semi-conducting regions 6 of the same conductivity type as the second layer 2 formed in the surface of the first layer 1, an electrical contact 7 for each of the semiconducting regions 6, and a contact layer 11 on the surface of the third layer 3. One transistor is formed by the layers 1, 2 and 3 and the other transistor is a high grain multicollector transistor formed by the regions 6, 1 and 2. The contact 4 may form a Schottky barrier and many transistor pairs may be formed and isolated by regions 14 which may be a dielectric strip, an etched channel or a low resistivity region. In the latter case the region 14 may also provide electrical contact to the second layer 2.
Patent GB-1533738-A (GB)
Title: Circuit breakers
IPC: H01H71/24
Filed: 1976-12-14
Abstract: 1533738 Automatic circuit-breakers I-T-E IMPERIAL CORP 14 Dec 1976 [19 Dec 1975] 52133/76 Heading H1N A 6-multipole automatic electric circuitbreaker assembly with a toggle linkage 33, 34 and a latch 45 which retains contacts 21, 22 closed until released on movement thereof due to the action of a bimetallic strip 18 or an electromagnet armature 58 has parallel connections 20, 23 on which the contacts 21, 22 respectively are mounted and which under heavy fault conditions repel each other so that the contacts are opened before the latch releases the mechanism. In the contact open position the movable contact connector 20 engages an arc-runner 62 which is also connected to a conductor bar 78 which by-passes the bimetal strip 18. The bar 78 is mounted on bosses 81, 82, 83 which are hollow and can be used for connection to busbars on a mounting board (not shown).
Patent GB-1505299-A (GB)
Title: Composite construction
IPC: F25D23/06
Filed: 1975-12-22
Abstract: 1505299 Laminated insulating and impactresistant plastics material MONSANTO CO 22 Dec 1975 [23 Dec 1974 (2)] 52324/75 Heading B5N A laminate comprises, in order, layers of (I) thermoplastic material, (2) rubber-modified nitrile polymer containing 55-85 wt. per cent nitrile units and 5-30 wt. per cent synthetic or natural rubber (the nitrile unit content excluding nitrile units in the rubber and being calculated as an equimolar weight of acrylonitrile), and (3) a cellular insulating material, the major amount of whose cells are filled with gaseous halogenated aliphatic or cycloaliphatic hydrocarbon. Insulating panels are made by bonding a further layer, e.g. steel, aluminium, wood, plastics or a laminate of (1) and (2) to the exposed surface of the foam (3) by foaming in situ, using a prelaminate of (1) and (2), or by laminating with adhesive or melt adhesion. The laters (1) and (2) may be of thickness 50- 750 and 0À5-20 mils respectively; may be laminated by heat and pressure, adhesive, extrusion of one or both layers, or application of a solution or dispersion of one material to the other; may be oriented; and may be vacuumformed to a desired shape. The layers (I) may comprise an impact-resistant ABS copolymer (including equivalent materials other than A, B, S), polyvinyl chloride, polycarbonate or polymethyl methacrylate, and the layer (3) may comprise polyurethane, in which the gaseous material is the residue of a blowing agent or is added for insulation. Suitable fluoro- and chlorofluoro-carbons are listed. The polymer (2) may be formed by direct polymerization and/or graft polymerization techniques, the nitrile polymer preferably being a copolymer with an olefinic comonomer; preferably the rubber is grafted in one or two stages with nitrile polymer and blended with further nitrile polymer. (The Specification gives detailed information as to materials and amounts.) The laminate may be used for thermally insulating refrigerator and cooling box panels, the panels being shaped to provide shelf supports and corrugated surfaces if desired, and for acoustic insulation and boat hulls.
Patent GB-524759-A (GB)
Abstract: 524,759. Olefine oxides. CARBIDE & CARBON CHEMICALS CORPORATION. Feb. 7, 1939, No. 3935. Convention date, March 15, 1938. [Class 2 (iii)] Olefine oxides are produced by direct oxidation of olefines by passing a mixture containing olefine and oxygen over a catalyst at 150- 400‹C., the gas mixture being passed through the tube at not less than 0.2 pounds per square foot of sectional area of the tube per second. The exit gas, after removal of the olefine oxide and addition of fresh olefine and oxygen may be recycled. The pressure may be 20-3000 lb. The catalyst may be silver or silver oxide on ceramically bound fused alumina, artificial silica filterstone sandstone, or brick or may be made as described in Specification 517,333. Examples describe the production of ethylene oxide. The oxide may be recovered from the reaction mixture by water-scrubbing or by absorption in active carbon as described in Specification 466,417.
Patent GB-1447673-A (GB)
Title: Hydraulic piston-and-cylinder arrangement for adjustment of the relative angle position of two pivotally-connected parts
IPC: F15B/
Filed: 1973-11-13
Abstract: 1447673 Fluid actuators APPLIED POWER Inc 13 Nov 1973 [13 Nov 1972] 52700/73 Heading F1D An actuator 4, Fig. 2, for tilting the cab of a lorry, has a by-pass 15 which connects chambers 10, 11 on either side of a piston 9 so that the piston can reciprocate freely when the cab is in the driving position. To tilt the cab, pressure fluid is fed to both sides of the piston, from a pump and reservoir unit 8, by a valve 13. Thus, the presence of the open by-pass does not affect the operation of the actuator. Figs. 3-5 (not shown), illustrate different forms of by-pass. In Fig. 6 a piston 9' is slidable between stops 16 on the piston-rod to provide lost motion. A helical groove 15d or a straight groove 15e provides the by-pass.
Patent GB-1294463-A (GB)
Title: Immunological reagent and process for making same
IPC: G01N33/548
Filed: 1969-10-29
Abstract: 1294463 Cellulose-antigen reaction products MILES LABORATORIES Inc 29 Oct 1969 [1 Nov 1968] 53071/69 Heading C3H [Also in Division B1] An immunological reagent comprises particles of a water-insoluble cellulose derivative having chemically linked thereto an antigen or antibody, itself having an acidic indicator material adsorbed on it. The cellulose derivative is preferably p-aminobenzyl or p-aminomethoxy benzyl cellulose and may be made reactive to immunological materials by diazotization. The indicator may be hematoxylin, fluorescein or titan yellow, and prior to its adsorption on to the antigen or antibody-treated particles any unreacted diazo groups on the particles may be treated with a dye-forming material, for example beta-naphthol. In use of the reagent, the immunological counterpart of the antigen or antibody in the reagent may become attached to the reagent particles, releasing the indicator into solution; alternatively the immunological counterpart may itself become attached to the indicator and the indicator colour remains with the particulate material. A spot of the reagent may be placed on a bibulous strip. The strip may then be "developed" with the sample under test or the sample may be placed on the reagent spot and the strip developed with saline. In the examples, the antigens or antibodies are human myoglobin, human haemoglobin, rabbit anti-HCG, HCG, rabbit anti-human haemoglobin, mule anti- HCG. Other antigens and antibodies are mentioned.
Patent GB-1219399-A (GB)
Title: Improvements in or relating to strip metal heating apparatus
IPC: C21D9/56
Filed: 1969-10-31
Abstract: 1,219,399. Continuous strip heating furnaces. SELAS CORP. OF AMERICA. 31 Oct., 1969 [1 Nov., 1968], No. 53611/69. Heading F4B. Continuous strip heating equipment comprises a preheating chamber 4 and a vertical furnace 5 heated by opposite rows of burners 8, and hot gases offtakes 11 and 12 on opposite sides of an inlet slot 9 for the strip 1, said offtakes leading to a duct (13, Fig. 2) having a valve controlled exhaust branch 14 and a valve controlled branch 17 leading to lower and upper ducts 18 and 19 opening into the preheating chamber 4 near its entrance. The chamber 4 also has upper and lower exhaust passages 23 and 24 leading via a duct 25 to the exhaust branch 14.
Patent GB-1107074-A (GB)
Title: A railway track assembly
Inventor: SANSON LEOPOLD STEWART
IPC: E01B9/34
Filed: 1965-12-17
Abstract: 1,107,074. Electric railway conductors and insulators. LOCKSPIKE Ltd. 31 Oct., 1966 [17 Dec., 1965], No. 53743/65. Heading B7L. [Also in Division E1] In a rail to sleeper fastening of the type where a resilient metal fastening member passes through an upward projection from the sleeper and bears on the top of the rail flange, such fastening being used each side of each rail, first and second portions of insulating material are positioned between the edge of the rail base and the projection and between the top of the rail base and the fastening member respectively and a third portion of insulating material between the rail and the sleeper, and a metallic filler is disposed between the first portion of insulation and either the projection or the rail base. The metallic filler 10 has varying thicknesses to allow for rail spread at curves and inequalities of projection spacing. The first and second portions of insulation 11 may be bonded or mechanically located to the metallic filler 12 which may have lugs 13 engaging the projection to prevent endwise movement.
Patent GB-1373708-A (GB)
Title: Fibril process
IPC: D21H19/56
Filed: 1972-11-22
Abstract: 1373708 Paper made from polyolefin fibrils GULF RESEARCH & DEVELOPMENT CO 22 Nov 1972 [26 Nov 1971] 54061/72 Heading D2B [Also in Division B5] Fibrils are produced by centrifugal spinning of a hot solution of a polyolefin. The solution is supplied from line 20 to pipes 96 inside the rotatable drum 88, preferably of inverted conical shape. The solution is spun out at at least 25g's from holes 87 on to basket 78 which is cooled for example by sprays 114 to a temperature such that the polyolefin precipitates as a swollen fibrous mass. Basket 78 may be rotated to aid in removing some of the solvent. The fibrous mass is collected in tray 100 and the liquid in 102 from which it may be recovered and re-used. The fibrous mass is then pressed to remove a large proportion of remaining solvent, cut into lengths and then beaten in a liquid that is miscible with the solvent but a non-solvent for the polyolefin. The resulting fibrils are then recovered by filtration. The preferred solvents are high-boiling hydrocarbons such as decalin or aliphatic hydrocarbon and the preferred non-solvent is isopropanol. The liquid used to cool the basket may be the same as the solvent, which part assists in material recovery. The fibrils are recoverable as a pulp which preferably contains a small residue of solvent. This pulp may be laid from its suspension in isopropanol to give a polyolefin paper.
Patent GB-1096260-A (GB)
Title: The separation of suspended, unsupported noble-metal catalysts
IPC: C01B15/023
Filed: 1966-12-02
Abstract: Palladium black catalyst is separated from suspension in anthraquinone solution, in the anthraquinone process for making hydrogen peroxide, by filtering through filter candles of carbon, having a maximum por width of 15mm .  The catalyst particles are from 0.01 to 1mm  in diameter, but the catalyst deposits on the outside surface and is periodically removed by reverse flow of filtrate. Typical flow rates and filter candle sizes and arrangements are given.
Patent GB-1457406-A (GB)
Title: Production of metal articles form powder
IPC: C22C33/02
Filed: 1972-11-24
Abstract: 1457406 Sintering and impregnating steel powder compacts R J DAIN and H FORD 30 Nov 1972 [24 Nov 1972] 54334/72 Heading C7D Tool or alloy steel other than stainless steel powder is isostatically compacted to at least 80% theoretical density and then sintered in contact with an infiltrant metal e.g. Ag, Cu, Co or their alloys which fuses and impregnates the steel compact. The sintered impregnated compact is suitable for such finishing operations as surface dressing, machining, extrusion, forging and rolling. A carbide, nitride or oxide may be added to the steel powder and the compact may be vacuum deoxidized prior to or during sintering.
Patent GB-1255519-A (GB)
Title: A combined inflatable enclosure and pressurizing device therefor
Inventor: KWAKE JOHN PAUL
IPC: F04D27/02
Filed: 1969-11-08
Abstract: 1,255,519. Inflatable tents. J. P. KWAKE. 8 Nov., 1969, No. 54804/69. Heading E1A. [Also in Division Fl] An inflatable enclosure 10 is supplied with air by a continuously-running blower 17 having an adjustable delivery conduit 18 for controlling the amount of air delivered into the enclosure in accordance with the air pressure therein (see Division F1). The conduit 18 flares into a plastics panel 40 which is bonded, e.g. by heat sealing, to a section 41 of the wall of the enclosure. The enclosure may be made from a single or several sheets of polyvinylacetate or P.V.C. A circumferential tube 13 is filled with water to anchor the enclosure.
Patent GB-1104585-A (GB)
Title: Improved vaporiser
Inventor: MANLEY ROBER EDWARD WENTWORTH
IPC: A61M16/18
Filed: 1965-12-29
Abstract: 1,104,585. Draw-over vaporizer. BLEASE ANAESTHETIC EQUIPMENT Ltd. 29 Dec., 1965, No. 55086/65. Heading A5T. A vaporizer of the draw-over kind comprises a chamber 10 for an anaesthetic or analgesic agent 12 having an outlet valve 26 connecting the chamber to a by-pass passage 30 through which gas can pass to the patient without contacting the agent, and a by-pass valve 28 located in the by-pass passage and manually adjustable (via knob 44 and mechanism 42, 40, 38, 36) to vary the concentration of the agent in the gas/vapour mixture to be passed to the patient, the outlet valve being linked to a temperature-sensitive unit 56 within the vaporizer so that the escape of vapour-gas mixture into the by-pass is controlled in response to the temperature variation within the vaporizer, and the unit 56 being in the form of a variable-volume chamber having a rod 58 secured to one of its walls 60, the position of the rod being thereby determined in accordance with the temperature sensed by the unit.
Patent GB-1197062-A (GB)
Title: Switch Assemblies for use with Printed Circuits
Inventor: SHARPLES RICHARD COLIN
IPC: H02B1/048
Filed: 1966-12-09
Abstract: 1,197,062. Two part couplings. JOSEPH LUCAS (INDUSTRIES) Ltd. 27 Nov., 1967 [9 Dec., 1966], No. 55171/66. Heading H2E. Resilient conductive strips 18 are mounted on the exterior of a switch body 11 by means of rivets 19 which are electrically connected to contacts (not shown) within the switch mechanism 12 operated by a member 16 passing through an opening 15 in a base 13, and the free inclined ends 18a of the strips engage conductive areas of a flexible printed circuit 14 extending over inclined surfaces 17 on the base at opposite edges of the opening 15. The switch is secured to the base by means of screws extending through integral lugs on the switch body.
Patent GB-1492548-A (GB)
Title: Apparatus for the measurement of the specific surface of pulverised materials
IPC: G01N15/08
Filed: 1974-12-23
Abstract: 1492548 Measuring specific surface of pulverized materials VYZKUMNY USTAV STAVEBNICH HMOT 23 Dec 1974 [22 Dec 1973] 55410/74 Heading G1N Apparatus for measuring the specific surface P of a pulverized material comprises a sensor 6 for producing a signal of which the duration is representative of the time interval t required for the passage of a predetermined volume of air through a sample bed of the material, means 4 for measuring the temperature T of the sample bed, and a circuit for producing an output signal in accordance with the equation: where k 1 , k 2 , k 3  are constants and Q, V and γ are the mass, volume and specific gravity of the sample, the circuit comprising means such as potentiometers 2, 3 for setting the values of k 1  and γ, a pulse generator 5, and a circuit 7 for gating the pulses from generator 5, the frequency of the pulse generator 5 and the length of time during which the gating circuit 7 is open and the pulse generator is in oscillation being controlled such that the number of pulses produced at the output of the gating circuit is proportional to P or P<SP>2</SP>. The means 4, sensor 6 and potentiometers 2, 3 are connected to a circuit 1 which controls the frequency of generator 5. If the output of gate 7 represents P<SP>2</SP>, P may be derived by a square root device 8. Unit 9 may be used to calculate the mean of two consecutive values. Units 11, 12 and 13 are a store, a digital display and a digital to analogue converter respectively.
Patent GB-1326277-A (GB)
Title: Rocket propelled missile
IPC: F16F5/00
Filed: 1970-11-23
Abstract: 1326277 Deflecting jets of rocket propulsion motors MESSERSCHMITT - BOLKOWBLOHM GmbH 23 Nov 1970 [5 Dec 1969] 55652/70 Heading B7G A rocket motor 2 is mounted on a missile 1 so that it may be swivelled for thrust vectoring by a structure comprising a frame 14 attached to the missile and formed with an annular member 17 (shown in cross-section), and a frame 15 attached to the rocket motor and, by rods 19 and servomotor 18, to the missile body, the frame 15 having an annular flexible diaphragm secured to the free edges of member 17 the cavity thus formed being optionally filled with liquid 16. Fuel and oxidant for the rocket motor is sup-  plied through flexible pipes 10, 11. Springs in-  stead of liquid may be inserted in the annular  cavity between the member 17 and the diaphragm. For thrust vectoring, servomotors 18 are operated to rock frame 15 about frame 14 through the medium of the flexible diaphragm.