baber/WOPTO huggingface dataset:
Patent GB-1069907-A (GB)
Title: Method of sealing electrical components in glass capsules
IPC: H01G13/00
Filed: 1964-05-14
Abstract: An electrical component 11 having a body 12 and a pair of terminals 16, 17 extending from opposite ends thereof is sealed to a glass tube 18 by threading one of the terminals 17 through an apertured brazing disc 24 and through an <PICT:1069907/C1/1> apertured metal disc 21, seating the metal disc 21 in a jig 27 adjacent to a heating coil 31, placing an open end glass tube 18, of similar coefficient of expansion to the metal disc 21, around the component 11, blowing a protective inert gas across the metal disc in the region of the terminal 17, energizing the coil 31 to heat the metal disc to a temperature at which the glass flows and the brazing material melts, the metal disc being in the high intensity region of the electromagnetic field of the coil, maintaining the heat level until a complete seal is effected between the disc and the tube and then cooling. Air is passed across the disc where it meets the tube to form an oxidizing layer thereon.  To aid the sealing, pressure may be applied to the tube, such as by a weight 34.  The metal disc 21 is preferably made of a metal similar to "Kovar" (Trade Mark), the brazing metal being coin silver (90% silver: 10% copper).  The tube 18 is made from a borosilicate glass.  Preferably the metal disc 21 has a concave outer portion in the region of the aperture.  The protective atmosphere is created by the use of a gas mixture of 8% hydrogen with 92% inert gas, such as nitrogen or preferably helium. This can also be used to fill the completely sealed capsule.
Patent GB-713392-A (GB)
Title: Improvements in or relating to regulating and switching systems for direct-current generators for electrical systems on vehicles
IPC: H02J7/22
Filed: 1952-08-12
Abstract: 713,392. Electric supply systems for vehicles. BOSCH GES., R. Aug. 12, 1952 [Aug. 31, 1951], No. 20225/52. Class 38(4) In a supply system for a vehicle comprising a dynamo 10 which may operate in conjunction with a battery 19 and wherein there is provided (1) a charging cut-out 16 having a reverse current coil 17 and (2) an automatic voltage regulator 13 for the dynamo having shunt and series control coils 15, 14, respectively, the load circuit 23 is connected to the junction between the series coils 14, 17 when the system is operating without a battery and to the cutout terminal 22 when the battery is included in the system. By this means the regulator setting may be the same irrespective of whether or not the battery is present.
Patent GB-960232-A (GB)
Title: Process for the manufacture of olefine polymers and copolymers having a high bulk density in the pulverulent state
IPC: C08F10/00
Filed: 1961-06-05
Abstract: Ethyl titanium trichloride is made from titanium tetrachloride and diethyl aluminium monochloride or ethyl aluminium sesquichloride by dissolving the reactants in an inert hydrocarbon solvent, mixing the solutions with stirring at a temperature in the range of 0 DEG C. to 20 DEG C., and ensuring during the reaction that the molar ratio of TiCl4 to monochloride is at least 1, isolating the reaction product, removing monoethyl aluminium dichloride from it by washing or treatment with Al(C2H5)3, and recovering TiCl3.C2H5.ALSO:Polymers of olefins of bulk density exceeding 430 grams per litre are made by polymerizing one or more of the olefins in the presence of a catalyst system comprising a liquid dispersing agent, diethyl aluminium monochloride, and a Ti-containing compound which has been prepared from TiCl4 and diethyl aluminium monochloride or aluminium ethyl sesquichloride by (a) dissolving each of the reactants in an inert solvent to give solutions containing 14 to 60% by weight of each reactant, (b) maintaining at any time in the reaction vessel a molar ratio of TiCl4 to diethyl aluminium monochloride of at least 1, (c) maintaining the molar ratio of Ti-compound formed to the Al-compound less than 2, (d) effect the reaction at a temperature of 0 DEG  to 20 DEG C., and (e) keeping the reactants well stirred.  The polymerization is continued until the phase ratio (by weight) of the liquid dispersing agent to the solid polymer is less than 1.6. The Ti-containing compound may be separated from the reaction mixture and washed with an inert solvent in which the aluminium monoethyl dichloride is soluble.  Before separation, the Ti-containing compound may be subjected to a thermal treatment at a temperature within the range of 40 to 150 DEG C., and then treated with aluminium triethyl in an amount sufficient to convert substantially all the aluminium monoethyl dichloride into diethyl aluminium monochloride. The olefin may be ethylene, propylene, butene, 4-methyl-pentene-(1), pentene-(1), or styrene.  The dispersing agent is preferably a hydrocarbon solvent.  The olefin may be mixed with a small amount of hydrogen.  Exemplified polymers are polyethylene, polypropylene, poly-4-methyl-pentene-(1), and copolymers of ethylene and propylene. The polymers may be recovered by conventional techniques such as addition of butanol, and steam-distillation. Specifications 799,392, 799,823, 801,862 and 826,639 are referred to.
Patent GB-422709-A (GB)
Title: Improvements in or relating to apparatus for use in the manufacture of laminated glass or in other similar manufacturing processes
IPC: B32B17/10
Filed: 1933-07-18
Abstract: 422,709. Fluid - actuated valves. PETERS & CO., Ltd., G. D., and ARTHURTON, R. I. D., Windsor Works, Slough, Buckinghamshire. July 18, 1933, No. 20321. [Class 135] [See also Groups VIII and XXVI] In a pneumatic or hydraulic controlling device for apparatus for making compound. glass &c., the starting valve 21, Fig. 2, is moved by hand to the position shown to start the cycle of operations, and at the end is automatically restored to its original position by the admission of pressure fluid to cylinder 38 at 39. To facilitate the hand actuation of valve 21, provision is made to release the fluid trapped in the cylinder 38 and pipe 39. The piston rod 70 is hollow and surrounds a rod 43 which is connected to the handle 36 of the starting valve 21 at one end and carries at the other end a valve member 71 adapted to seat on an annular rib 72 on the piston face. During the hand actuation of valve 21, the piston 37 lags behind valve member 71 and the trapped fluid escapes through the space between the hollow piston rod and the rod 43. A valve for delaying the admission of fluid from a port 25, Fig. 11, to a port 88 comprises a valve housing containing a piston packed with outwardly facing cup leathers 90 and a lubricating felt ring 91, the piston carrying a valve member 48 adapted to seat on a valve seat 89, passage of fluid taking place when a falling pressure acting on the larger area of the piston is overcome by the main pressure acting on the smaller area at the valve member 48. A shuttle valve comprises a casing 74, Fig. 12, containing a plug piston 75, the opposite ends of which are adapted to seat on soft rings 76, 77 and close port 30 or 28 from port 15 which communicates with the valve chamber through an annular space 81 and ports 78, 79. A bleed valve comprises a valve body with two ports 64, 65, Fig. 14, connected. by two passages 66, 67 in parallel, one containing a ball valve 9 which may be backed by a spring 68, the other an adjustable needle valve 7. Specification 402,774, [Group VIII], is referred to.
Patent GB-1012199-A (GB)
Title: Overload protection circuit
IPC: H03F1/52
Filed: 1964-05-15
Abstract: 1,012,199. Protective systems. SPERRY RAND CORPORATION. May 15, 1964 [May 28, 1963], No. 20328/64.. Heading H2K. An overload protective arrangement for a circuit, e.g. an amplifier, supplying a load ZL through a circuit-breaker 28, comprises a normally inoperative feed-back path R f , C f  connected between output and input stages Q 4 , Q 1  of the circuit and a resistor RS connected in series with the load, the increase in potential across the resistor due to an overload condition rendering the feed-back path operative to bias the circuit to a non-conducting state until the circuit-braker can operate to interrupt the supply +V 3  to the circuit. In the arrangement shown, the increase in potential due to an overload condition renders a controlled rectifier Q 5  conductive. This permits the capacitor C f  in the feedback circuit to discharge through the rectifier Q 5  and the resulting voltage developed across a resistor R 3  renders the input transistor Q 1  non-conducting so that the amplifier circuit is turned off. The discharge current I 1  and a current I 4  from + V 3  flow through the rectifier Q 5 , the tripping device (not shown) of the circuit-breaker 28 and the load Z L  to cause the tripping of the circuitbreaker in a time shorter than the discharge time of the capacitor C f .
Patent GB-865672-A (GB)
Title: Antiseptic therapeutic compositions comprising 2:4-dichlorobenzyl alcohol
Inventor: FENTON ALBERT HENRY
IPC: A61Q17/00
Filed: 1957-06-27
Abstract: Pharmaceutical compositions for oral and topical use comprise, as active ingredient, 2,4-dichlorobenzyl alcohol.  The compositions may be compounded in various pharmaceutical forms, for example, mouth washes, toothpastes, pastilles, lozenges, boiled sweets, ointments, jellies, lotions, medicated powders and ear-drops with the additions of conventional pharmaceutical excipients, binders, lubricants, liquid diluents of low volatility, e.g. propylene glycol and antifoaming agents, e.g. a silicone.  A colour stabilizing agent, e.g. citric acid, bacteriostatic and/or fungistatic substances, e.g. hexachlorophene, amyl-m-cresol, and other pharmaceutically active ingredients, e.g. salicylic acid, cetrimide, saligenin (o-hydroxy benzul alcohol) and cholesterol may also be present. Examples given of compositions containing 2,4-dichlorbenzyl alcohol (A) are: (1) lozenges comprising A, acacia gum, magnesium stearate and sucrose; (2) lozenges comprising A, saligenin, carbowax 6000, magnesium stearate, tragacanth, tartaric acid, and sucrose; (3) throat sweets comprising A, sugar, glucose, tartaric acid and amyl-m-cresol; (4) a water-miscible cream comprising A, and carbowax 1500; (5) an ear-drop solution of A in propylene glycol; (6) a scalp lotion comprising A, hexachlorophene, salicylic acid, cholesterol, cetrimide, iso-propyl myristate and an aqueous solution of quassia; (7) an antiseptic jelly comprising A, "Carbapol" (Registered Trade Mark) 934, triethanolamine, propylene glycol and water; (8) a veterinary ear-canker powder comprising A, hexachlorophene, g -benzene hexachloride, boric acid, zinc oxide, benzocaine, magnesium stearate, talc and kaolin; (9) a veterinary wound and strike powder comprising A, dieldrin, boric acid and pre-cooked starch; (10) a toothpaste comprising A, glycerine, water, tragacanth, heavy and light calcium carbonate, sodium lauryl sulphate and soluble saccharin. Specification 794,402 is referred to.
Patent GB-791249-A (GB)
Title: Improvements relating to gate end feeder conveyors for use in mines
Inventor: DUNCAN ANGUS WELLESLEY
IPC: E21F13/02
Filed: 1955-07-14
Abstract: 791,249. Endless conveyers for mines. MINING ENGINEERING CO., Ltd. July 12, 1956 [July 14, 1955], No. 20378/55. Class 78 (1). In a feeder conveyer and gate conveyer tension end assembly for use in mines consisting of a powerdriven feeder conveyer which incorporates a lowlevel horizontal receiving section leading up a ramp to an elevated horizontal delivery section, coupled to a gate conveyer tension end unit in. cluding a hopper extending under the delivery end of the feeder conveyer, relative movement between the feeder conveyer and gate conveyer is effected by power-operable means acting between the feeder conveyer and the tension end unit. As shown, the feeder conveyer is a double chain scraper conveyer which includes a receiving portion 10, a ramp section 11 and a delivery section 12, the delivery section being pivoted to the ramp section to allow its outer end, Fig. 2, to be guided by rollers 14 on rails 15 secured to the sides of the receiving hopper 13 of the gate conveyer tension end unit. The feeder conveyer is mounted by means of rollers 29 on the ramp section to run on rails 27 extending rearwardly from the end support 35 of the gate conveyer framework towards the mine
Patent GB-932593-A (GB)
Title: Fluid line transfer switch
IPC: F16K11/065
Filed: 1961-06-06
Abstract: <PICT:0932593/III/1> <PICT:0932593/III/2> A sampling switch for use in gas chromatography comprises a first fluid line, a movable member containing a first passage which constitutes a portion of the first fluid line in the first position of the movable member, a second fluid line including a second passage in the movable member positioned to be substituted for the first passage in the first fluid line when the movable member is moved to the second position, and a chamber surrounding a portion of the first fluid line and defined by a movable member, and by an outer sealing member surrounding the inner sealing member and also in sealing engagement with the movable member, as well as by a flexible joining member connecting the two sealing members, and means for independently resiliently biasing the sealing members against the movable member, the movable member being arranged to move relatively to the chamber, and the chamber forming a portion of the second fluid line when the movable member is in the first position.  As shown in Fig. 2 the transversely movable slider 27 of rectangular cross-section is resiliently mounted between the two open end opposed cups 23 and 24 by opposing spring assemblies 31 and 32 bearing upon annular members forming annular chambers 29 and 30, said annular members are preferably made of polytetrafluoroethylene and are in sealing engagement with slider 27. The carrier gas passes vertically downward through line 28 into a vertical passage 281 in the slider 27 when in the first position. Meanwhile the sample gas flows consecutively through chamber 29, passage 38, chamber 30 and passage 39 and when 27 is moved to its second position, passage 38 is aligned with line 28 and the fixed volume of gas in passage 38 is injected into the carrier stream.  The sample gas flow continues as before except that it now travels between chambers 29 and 30 through the passage 281 in its new position. Thereafter the reverse movement of slider 27 uses passage 281 as a sample gas measurement volume and transfers this volume into the carrier gas flow line 28.  The sample passages 281 and 38 may be made tortuous to increase the sample volume.  Fig. V shows an embodiment suitable for use in frontal analysis or displacement chromatography.  A first stream is established through line 55 and by moving slider 2711, an interface between the first stream and a sample stream in line 551 is established.  All the passageways in the above apparatus may be made of polytetrafluoroethylene.
Patent GB-380881-A (GB)
Title: Improved apparatus for facilitating the laying of rails for railways and the like
IPC: E01B29/16
Filed: 1931-07-16
Abstract: 380,881. Laying railway lines. BRADLEY, E. S., Aukland, Woodvale Road, Darlington, Co. Durham. July 16, 1931, No. 20438. [Class 104 (ii).] Apparatus for facilitating the laying of railway lines comprises an inclined ramp a up which the rail may be slid in two or more steps, means such as notches b being provided for temporarily holding the rail at the end of each such step. The device may be formed as a one-piece steel casting or may consist of steel side-plates with timber insertions e, e<1>, the latter abutting on the sleeper and chair. Other positioning means may be employed. Triangular supports d or other form of feet may be provided.
Patent GB-220165-A (GB)
Title: Detachable gearless tipping body, otherwise tipping bogie and runners attachable to lorry, waggon or other vehicle
IPC: B60P1/32
Filed: 1923-08-11
Abstract: 220,165. Dixon, B. A. Aug. 11, 1923. Tipping-wagons; vehicles with removable bodies.-In tipping wagons, lorries, &c., the body is provided with wheels F, F' to run on runners fixed on the vehicle chassis and remains in an horizontal or nearly horizontal position as it moves along the runners until its centre of gravity is over or nearly over the ends of the runners, whereupon the wheels F<1> engage in recesses C to form a fulcrum about which the body is free to rock. The body is controlled by hand. A chain or rope is preferably provided to check the tipping of the body and hold it in the tipped position until drawn forward with the vehicle clear of the tipped contents. The body may be removable, in which case the check chain is released to allow the rear of the body to rest on the ground when it may easily be disengaged from the runners. The runners may comprise wood rails A upon which are mounted metal rails B.
Patent GB-624704-A (GB)
Title: Improved ball floats
IPC: F16K33/00
Filed: 1946-07-09
Abstract: Ball floats are made by heating an end of a suitable length of polythene tube above its softening point, preferably to 105-115 DEG C., sealing the heated end, inserting into a mould consisting of two or more readily assembled and detached units, and introducing compressed gas into the tube to press it against the mould until it has cooled below the softening point of the polythene.  The seamless ball float is suitable for use in storage and conducting systems for water and corrosive liquids such as strong alkali or acid, e.g. hydrofluoric acid.
Patent GB-1147026-A (GB)
Title: Novel terpolyamides
IPC: C08G69/40
Filed: 1966-05-09
Abstract: 1,147,026. Terpolyamides. MONSANTO CO. 9 May, 1966 [14 May, 1965; 7 June, 1965], No. 20519/66. Heading C3R. Linear fibre-forming terpolyamides composed of (A) 1 to 98% (molar) units (B) 1 to 98% units and (C) 1 to 50% units may be obtained by co-condensing the hexamethylene diamine salts of adipic and terephthalic acids and the hexamethylene diamine or 1,4-bis- (aminomethyl)-cyclohexane salt of o, m, or p phenylenedioxydiacetic acid. R in units (B) represents tetramethylene or 1,4-cyclohexylene but in the latter case the (B) units constitute less than 50% of the terpolymer.
Patent GB-299119-A (GB)
Title: Improvements in and relating to gas and fluid compressors
IPC: F04B43/00
Filed: 1927-08-04
Abstract: 299,119. Kenyon, D., Evans, H., and Great Harwood Refrigerator & Engineering Co., Ltd. Aug. 4, 1927. Flexible diaphragm pumps.-The gas receiving chamber 2 is separated from the crank chamber 1 and compressor chamber 7 by diaphragms 3, 8, the gas passing into the compressor chamber by the valve 27 on the downward stroke. Leakage of gas, and its contamination by lubricant are prevented. The diaphragms are connected to a plunger 17 and the boss of a spider 19 sliding in the chambers 2, 1 respectively. The driving shaft 22 has spiral oil grooves 29 communicating through a passage 31 with oil in the crank chamber. Several compressor chambers of successively diminishing bores may be disposed in line. Any number of compressors, single, double or multiple, may be arranged around a single crank chamber and driven from a common shaft.
Patent GB-1176402-A (GB)
Title: Preparation of Non-Conjugated Diolefins
Inventor: BLOCH HERMAN SAMUEL
IPC: C07C2/04
Filed: 1967-05-03
Abstract: 1,176,402. Non-conjugated diolefins. UNIVERSAL OIL PRODUCTS CO. 3 May, 1967, No. 20537/67. Heading C5E. Non-conjugated diolefins are prepared by copolymerizing a mono-olefinic hydrocarbon with a diolefin at 50-300‹ C. and 5-250 atmospheres in the presence of a catalyst comprising an alkali metal amide composited on a substantially anhydrous solid support which has a surface area of at least 25 m.<SP>2</SP>/g. and which has been promoted with a compound selected from salts and hydroxides of the alkali metals and alkaline earth metals and thereafter calcined. The preferred support is alumina. Examples describe the reactions of ethylene and 1,3-butadiene to give C 8  non-conjugated dienes; propylene and 1,3-butadiene to give 1,5- and 2,5.heptadienes; propylene and 1,4- pentadiene to give 4-methylheptadienes; propylene and 1,3-cyclopentadiene to give alkylcyclopentenes; and 1-butane and 1,3-butadiene to give 3-methylheptadienes.
Patent GB-944308-A (GB)
Title: Treatment of polyamides
Inventor: SMALL PERCY ARTHUR
IPC: C08G69/18
Filed: 1961-06-07
Abstract: A process for the treatment of polyamides comprises exposing a solid polymeric material made by the alkaline polymerization of a cyclic lactam having at least six carbon atoms in the ring to the action of an acidic compound in the vapour state.  Specified acidic compounds are those acids having a vapour pressure as low as 1 mm. of mercury at 25 DEG C. and a first dissociation constant of at least 10-10 in aqueous solution at 25 DEG C. and the corresponding acid chlorides and anhydrides e.g. formic acid, acetic acid, acetylchloride, phosgene, sulphur dioxide, sulphur trioxide, hydrogen chloride and hydrogen fluoride. Specified polyamides are those derived from e -caprolactam, enantholactam, capryllactam, dodecanolactam, a -methyl caprolactam, b -d -dimethyl caprolactam and b -phenyl caprolactam. In the example, poly-e -caprolactam which has been made in the presence of sodium and dimethyl carbonate is exposed to the action of formic acid vapour at room temperature. Specification 944,307 is referred to.
Patent GB-992115-A (GB)
Title: Dehydrogenation process
IPC: C07C69/54
Filed: 1961-06-07
Abstract: Unsaturated organic compounds are obtained by the vapour phase reaction at 400-850 DEG  C. of a dehydrogenatable compound containing a CH-CH grouping and 2-20 carbon atoms, with at least about one-fourth mol. of oxygen, preferably 0.4-1.5 mols., and at least about 0.001 mol. of an ammonium halide, preferably 0.01-1 mol. per mole of organic compound. The dehydrogenation is preferably also carried out in the presence of a metal of Group Ia, Ib, IIa, IIb, IIIa, IIIb, IVa, IVb, Va, Vb, VIb, VIIb or VIII or of the lanthanum rare earths, or a salt, oxide or hydroxide of such a metal. Steam may also be present.  The organic compound may be an alkyl halide, ether, ester, aldehyde, ketone, acid, cyanoalkane or alkyl heterocyclic compound.  Examples prepare methyl isopropenyl ketone, acrolein, acrylonitrile, chlorobutadiene (from 2-chloro-but-2-ene, with isomerization) and vinyl chloride. Other suitable starting compounds and products are specified.  Reference has been directed by the Comptroller to Specification 728,656.ALSO:Unsaturated hydrocarbons are obtained by the vapour phase reaction at 400 DEG -850 DEG  C. of a dehydrogenatable compound containing a CH-CH grouping and 2-20 carbon atoms with at least about one-fourth mol. of oxygen, preferably 0.4-1.5 mols., and at least about 0.001 mol. of an ammonium halide, preferably 0.01-1 mol., per mol. of hydrocarbon. The dehydrogenation is preferably also carried out in the presence of a metal of Group Ia, Ib, IIa, IIb, IIIa, IIIb, IVa, IVb, Va, Vb, VIb, VIIb or VIII or of the lanthanum rare earths, or a salt, oxide or hydroxide of such a metal.  Steam may also be present.  An expected product >C=C=C< may isomerize to <FORM:0992115/C4-C5/1> The starting material may be an alkane, alkene, alkyl aromatic compound or cycloalkane. Examples prepare butadiene-1,3 (from butene-2), isoprene (from 2-methylbutene-2), benzene (from cyclohexane), styrene (from ethylcyclohexane and from ethylbenzene), a -methylstyrene, isobutene and propene.  Other starting compounds and products are specified. Reference has been directed by the Comptroller to Specification 728,656.