baber/WOPTO huggingface dataset:
Patent GB-1468986-A (GB)
Title: Self-extinguishing copolymer products suitable for making  acrylic fibres
IPC: C08F220/42
Filed: 1974-11-27
Abstract: 1468986 Flame-retardant acrylic polymers SOC ITALIANA RESINE SIR SpA 27 Nov 1974 [28 Nov 1973] 51492/74 Heading C3P Acrylic polymer products suitable for forming self-extinguishing acrylic fibres comprise at least 76% by weight of copolymerized acrylonitrile, 1À6-11% by weight of a copolymerized neutral ethylenically unsaturated halogen-free monomer, and 4-20% by weight of copolymerized 1- and/or 2-bromopropene, all the bromopropene being copolymerized with acrylonitrile, and the copolymerized neutral monomer being present in the bromopropene/acrylonitrile copolymer and/or an acrylonitrile copolymer which is free of halogen. The products may additionally indude 0À1-3% by weight of a copolymerized monomer having a sulphonic acid group or a salt thereof to improve dyeability in respect of basic dyestuffs, e.g. methallyl-, styrene- or methallyl oxyethyl-sulphonic acid or the sodium or potassium salt thereof (many other sulphonic monomers are additionally disclosed). Examples of the neutral monomer are styrene, alphamethyl styrene, vinyl methyl ether, vinyl methyl ketone methyl acrylate, methyl methacrylate and vinyl acetate. The acrylic product may optionally include conventional fire-retardant additives e.g. antimony sequioxide.
Patent GB-1144828-A (GB)
Title: Winding machine
Inventor: HARRISON GEOFFREY LINDLEY
IPC: B66D1/08
Filed: 1966-11-17
Abstract: 1,144,828. Winding apparatus; conveyer driving apparatus. DOWTY EQUIPMENT OF CANADA Ltd. 12 Feb., 1968 [17 Nov., 1966], No. 51620/66. Headings B8A and B8B. A winding machine, e.g. a capstan, a winch, a driving drum for an endless conveyer, comprises a drum 6 roller mounted on a tubular extension 3 of a stationary base 1 and driven through epicyclic and ordinary gear train reduction gearing from a swashplate hydraulic motor 11, the gearing and the motor being located within the bounds of the base 1 and the drum 6. The motor 11 comprises swashplates 14, 17 stationary with the base 1 and a roller mounted cylinder block 23 incorporating a plurality of swashplate engaging opposed piston assemblies 35. 36 in cylinders 34. The latter are cyclically connected to supply and return hydraulic lines 28 to effect rotation of the block 23. An integral shaft 24 of the block 23 carries a sun pinion 45, which together with a fixed annular gear 49 and planet gears 46 mounted on a carrier 47, form the epicyclic gear. The driven carrier 47 is formed with a pinion 51 which through idler gears 56, drives an annular gear 58 secured to the drum 6. A brake disc 60 secured to the motor block shaft 24 has a frusto-conical braking surface 59 engageable by an annular piston 61 under the pressure of springs 69, when the motor is not being driven. The annular piston 61 is rotationally locked to the stationary casing 12 of the hydraulic motor by studs 67 and is axially displaceable against the springs 69 by pressurized fluid supplied via line 66 when the motor is being driven.
Patent GB-1360747-A (GB)
Title: Method of producing directionally solidified cast alloy articles
IPC: B22D27/04
Filed: 1972-11-09
Abstract: 1360747 Casting processes GENERAL MOTORS CORP 9 Nov 1972 [15 Feb 1972] 51671/72 Heading B3F A columnar-grained unidirectionally solidified cast alloy article (e.g. a turbine blade) is made by pouring a molten alloy into a ceramic mould having an open-ended cavity, allowing the alloy partially or wholly to solidify, reheating the mould and the alloy to a temperature above the melting range of the alloy and allowing the mould to cool with the open end of the mould cavity in contact with a chill plate. When casting turbine blades a shell-mould 10 is provided with a branched runner system 16 leading to several blade-forming cavities 12 (each having an open end 13) from a sprue 14. The mould 10 is located in a tapered flask 20 (having an asbestos layer 23) upon a heat-insulated support 13. The mould having been preheated to, e.g. 2000 F., the mould/flask assembly is located in a vacuum chamber (not shown) and molten alloy, e.g. at 2900 F. poured into the mould. The alloy is allowed to solidify, at least in the open ends 13 of the cavities 12 and removed from the vacuum chamber on to a chill-plate 18. Pebbles 23 of exothermic composition, e.g. burning at 3100 F. are packed around the mould and ignited to remelt the alloy. Due to the tapering shape of the flask 20 a temperature gradient is set up in the mould and the alloy cools from the base upwardly to form columnar-grained unidirectionally solidified castings. An air-tight hood 30 may cover the mould whilst the metal solidifies and hexamethylenetetra-amine may be placed in the sprue 14 to evaporate and form a reducing atmosphere. Inert gas, e.g. Ar can be introduced into the hood 30. In order to form a turbine blade where the root has an equiaxed structure and the airfoil part has a columnar grained structure only that part of the cast alloy forming the airfoil is remelted.
Patent GB-1476598-A (GB)
Title: Electrolytic process for the preparation of hexafluoropropene epoxide
IPC: C25B3/23
Filed: 1975-12-18
Abstract: 1476598 Hexafluoropropene epoxide HOECHST AG 18 Dec 1975 [20 Dec 1974] 51851/75 Heading C2C [Also in Division C7] Hexafluoropropene epoxide is prepared by electrolytic oxidation of hexafluoropropene (advantageously gaseous) in an electrolyte comprising acetic acid and/or acetonitrile, containing 20 to 40 vol. per cent of water and optionally up to 10 wt. per cent of an alkali metal perchlorate, hexafluorosilicate, fluoborate, hexafluorophosphate and/or nitrate and/or the corresponding free acid, preferably with an anode of a Pt metal or alloy or of PbO 2 . Operation may include an anolyte pH of 0-7, a temperature of -30 to +50C., a c.d. of 0À5-15 A/dm<SP>2</SP> and use of increased pressure. A divided cell with an i-x membrane (e.g. of sulphonate type) may be used, with cathode of, e.g. Cu, Ni, steel or graphite. The anode PbO 2  may be a coating on, e.g. graphite.
Patent GB-1293379-A (GB)
Title: Capacitance and loss factor measurement
Inventor: BANSAGI LASZLO
IPC: G01R27/26
Filed: 1969-10-23
Abstract: 1293379 Capacitance and loss measurement BUDAPESTI MUSZAKI EGYETEM 23 Oct 1969 52027/69 Heading G1U In a system for measuring relative capacitance variation #C x /C x  and loss factor tan # x  of a component C x  a current balance technique is used, wherein the flux in a transformer coil N 1 , through which passes the current C x  due to a voltage U, is balanced against that in a coil N 2 , through which passes part of the current through a standard capacitor resistor network CNR 2  by adjusting the turns ratio N 2 /N 1  and resistor R to achieve an initial balance for C x , tan # x  as indicated at NI. To facilitate continuous adjustment (rather than discrete adjustment of N 2 /N 1  in order to monitor variations #C x  in C x , a unit Q which may be a current transformer is connected across the winding N 2 , to feed back a proportion of the current through the winding. Continuous adjustment is then achievable by altering transfer factor of this unit. The system described also incorporates a capacitor Co connected across the winding N 2  and resistor R. This has the effect of very considerably reducing the value of R necessary to balance the system when components with high loss factor are under test.
Patent GB-1533333-A (GB)
Title: Device for picking-up a sheet of material
IPC: B31B7/00
Filed: 1976-02-09
Abstract: 1533333 Universal mounting of a suction gripper UNION CAMP CORP 9 Feb 1976 [25 March 1975] 52151/76 Divided out of 1533332 Heading B8H A device for picking up a sheet of material and suitable for use in an apparatus for laminating a liner to a box blank, comprises an upper mounting 46a, a lower mounting 47b, a flexible cable 45 secured at one end to the upper mounting and at the other end to the lower mounting, a coil spring 36 supported between the upper and lower mountings, a swivel member 38 rotatably connected to the lower mounting, a vacuum cup 12 affixed to the swivel member and means to connect a source of vacuum to the vacuum cup. The cup is secured to one end of threaded nipple 37 the other end of which is secured to swivel ball 38 which is retained between plate 39 and centre piece 40 which are secured together and fastened to retaining plate 41 by screws 42. The cup is connected to a source of vacuum through nipple 37, swivel ball 38, chamber 43 and threaded part 44. Flexible metal cable 45 is secured at each end to spring retaining discs 46 and 47.
Patent GB-1359667-A (GB)
Title: Preparation of ypsilon-methyl glutamate
Filed: 1971-11-10
Abstract: 1359667 γ-Methyl glutamate KYOWA HAKKO KOGYO CO Ltd 10 Nov 1971 [2 Dec 1970] 52179/71 Heading C2C γ-Methyl glutamate is prepared by treating glutamic acid with methanol and sulphuric acid to effect esterification, neutralizing the resulting reaction mixture with an aqueous solution of an alkali metal hydroxide, carbonate, or bicarbonate, separating the crystalline alkali metal sulphate formed and recovering the γ-methyl glutamate from the filtrate.
Patent GB-1414550-A (GB)
Title: Glazing machine
IPC: B65G17/00
Filed: 1973-11-09
Abstract: 1414550 Glazing machine STEULERINDUSTRIEWERKE GmbH 9 Nov 1973 [13 Nov 1972] 52244/73 Heading C1M A glazing machine for applying glaze to the uppermost surfaces of articles e.g. tiles, includes conveyer means for conveying the articles through the machine, and means for pouring a falling curtain of the glaze on to the uppermost surfaces of the articles to be conveyed through the machine, said conveyer means including a plurality of point supports defining a plane for supporting the lowermost, unglazed, surfaces of the articles and said point supports being mounted on at least two laterally spaced parallel endless bonds. The point supports may comprise a pointed pin and may suitably comprise hooked and pointed pins mounted on those sides of the bands which face one another. The distance between successive supports on each band is preferably equal. The bands may suitably be chains, belts or plastics bands. Preferably the endless bands each comprise a roller chain. In the specific embodiment described (Fig. 1) the conveyers comprise duplex roller chains 1, 2 which travel over twin sprocket wheels 3, 4 and 5, 6. The chains 1, 2 each carry a plurality of hook-shaped supports in the form of stainless steel pins bent into a U-shape with one end turned outwardly and provided with plastics tips. The supports are located between the chains 1, 2 and each support 13 is attached to an associated link of the associated chain at its outwardly turned end and is equidistantly spaced from the adjacent supports. A falling curtain of glaze is produced by elongate slit 16. Rails 17, 18 and 19, 20 are provided for supporting the upper reaches of chains 1, 2 and upper rails provide additional guidance of the outermost strands of the chains from above.
Patent GB-1094556-A (GB)
Title: Modulator circuits
IPC: H03F3/21
Filed: 1966-11-22
Abstract: 1,094,556. Amplitude modulation. TELEFONAKTIEBOLAGET L. M. ERICSSON. Nov. 22, 1966 [Nov. 23, 1965], No. 52328/66. Heading H3R. A balanced modulator of the type comprising a pair of transistors T1, T2, a modulation input 1 connected to the transistors in pushpull, a carrier input 3 connected to the transistors in parallel and an output 2 is characterized in that the transistors are provided with a base bias such that they operate in class AB. The bias may be divided directly from a potential divider (R7, R8), Fig. 1 (not shown) or more preferably, Fig. 3, from a D.C. amplifier T3 in the carrier input circuit. As shown the common emitter state T3 is temperature sensitive and provides temperature compensation for the modulator. Alternatively T3 may be connected as an emitter follower. The use of class RB operation reduces changes in output with changes in carrier level.
Patent GB-528071-A (GB)
Abstract: 528,071. Safety cut-off valves. FOWLER, L. J. April 26, 1939, No. 12554. [Class 135] A thermally operated valve adapted to control a main cut-off valve of the diaphragm actuated type for application to gas-fired boilers, water heaters, ovens and the like comprises a body or casing 10 mounted outside the combustion chamber and connected by a tube 18 to a block 19 mounted inside the combustion chamber. A bi-metallic strip 20 mounted on the block 19 is connected at its free end to a rod 17 adapted to open a spring- pressed valve 11 when heated by the flame of a pilot burner 24. The pilot burner 24 is supplied through pipe 23 connected to a pipe 27 through a duct 25 in the casing 10. The valve 11 controls a main gas cut-off valve 2, the arrangement being such that when the valve 11 is open gas leaks from the diaphragm chamber of the valve 2 through a pipe 4 and an inlet 13 so as to allow the main valve to open. The outlet 14 of the valve 11 is connected by a separate tube to an escape burner 15. Gas escaping from the control chamber of a main regulating valve 3 under the control of a thermostat 8 or a time switch is led by a pipe 9 to one of two connections on the body 10 whence it passes to the burner 15, the connection not used being suitably plugged. The strip 20 has a protective strip 22 of a corrosion resisting and heat resisting material.
Patent GB-1234706-A (GB)
Title: Electrophotographic material
Inventor: CONTOIS LAWRENCE EDWARD
IPC: G03G5/06
Filed: 1969-10-30
Abstract: 1,234,706. Photo-conductive composition. EASTMAN KODAK CO. 30 Oct., 1969 [1 Nov., 1968], No. 53150/69. Heading H1K. A photo-conductive composition comprises a resin binder, an arylamine photo-conductor and benzo-[b]-pyrylium or benzo-[bj -thiapyrylium salt of specified formula as a sensitizer. In the specific embodiments, an electrophotographic element is formed by coating a support of polyethylene terephthalate having a conductive sodium lactone layer thereon with a photoconductive composition comprising a polyester binder, 4,4<SP>1 </SP>- bis - (diphenylaminochalcone), 4 - acetyltriphenylamine, triphenylamine or bis - (4 - diphenylaminobenzal) acetone as the photo-conductor and a pyrylium salt. Suitable specific pyrylium salts are enumerated as are alternative binders, supports and photo-conductors. The composition is sensitive to red and infra-red light in the range 650 nm. to 900 nm.
Patent GB-1126234-A (GB)
Title: Book containing stereograms
IPC: G02B27/22
Filed: 1965-12-15
Abstract: 1,126,234. Albums. RIZZOLI EDITORE S.p.A. 15 Dec., 1965 [23 Dec., 1964], No. 53306/65. Heading B6A. [Also in Division G2] An album comprises front and back covers 1, 2, respectively, and leaves 4 in the form of transparent pockets, bound together by a metal spiral 3, and in each pocket is placed a card 5 having a graphic reproduction of a subject at 6, a description of the subject at 9, and two window apertures at 8 in which are placed a pair of photographs, prints, diapositives &c. 7 for stereoscopic viewing. In a modification, the pocket leaves 4 are omitted, and the cards 5 are held between the covers in a readily releasable manner. A pocket 12 on the cover 1 is adapted to receive a stereoscopic viewer 11<SP>1</SP> (see Division G2) which is made from a cardboard blank, and readily collapsible and foldable into a flat condition.
Patent GB-1319500-A (GB)
Title: Carburettor of the overflow type
IPC: F02M17/06
Filed: 1970-11-10
Abstract: 1319500 Spray carburettors MIKUNI KOGYO CO Ltd 10 Nov 1970 [8 June 1970] 53492/70 Heading F1B An overflow carburettor comprises a closed wall 13, Fig. 1 extending upwardly from the base of a fuel chamber to a point below the top thereof and being open at its top to allow fuel overflow from a fuel well 14 into an overflow chamber 15, a main nozzle support tube extending substantially vertically from the carburettor body and having a main nozzle 23 and a main jet 21, a fuel inlet port 16 above the main jet and means 20 to stabilize the fuel layer around the main jet. Fuel from tank 11 passes via cock 28 and port 16 into well 14 from where it is inducted through jet 21 and nozzle 23 into the carburettor throat. Excess fuel flows through gap 19 into chamber 15 and is returned to tank 11 by pump 30. The plate 20 stabilizes the fuel in the vicinity of the jet during any carburettor movement. Cock 28 may be operated automatically during engine starting. In other embodiments the plate 20 is replaced by a screen or porous plate at the overflow level or at a level between the inlet port and the lower fuel jet. In another embodiment the fuel chamber may contain an inner cylindrical partition and/ or a cylindrical screen or a porous screen. In all embodiments the fuel may be pumped to the carburettor from a lower tank to which excess fuel is returned by gravity.
Patent GB-1366220-A (GB)
Title: Tilting vehicle cabs
IPC: B62D33/07
Filed: 1972-11-21
Abstract: 1366220 Vehicle cab mountings DAIMLERBENZ AG 21 Nov 1972 [25 Nov 1971] 53722/72 Headings B7D and B7B The rear of a vehicle cab, which is mounted for tilting about a forward transverse axis, is supported on the chassis by adjustable and lockable piston/cylinder spring legs 2, 4 which engage the cab by sound insulating blocks 5. Cylinder 2 is mounted by rubber rings in a collar 3 on a chassis bracket 1, and block 5 is adjustably screwed on the piston-rod 4. Cup 6, which seats block 5, is mounted on the cab and carries the spring leg locking mechanism, which includes a movable forked slide 8 having an inclined end section 14. Slide 8, which is movable by means of a toothed segment lever 15, engages under the flange 10 of a sleeve 9, which is slidably mounted on piston-rod 4 and is urged downwardly by springs 11. As shown the spring leg is locked; on moving the slide to the left it disengages the sleeve 9 and flange 10. A cab-mounted guide 21 and a roller 20 a bracket 1 ensure lateral guidance of the cab. A cab-mounted spring biased catch 23 and an extension 19 of bracket 1 insure against accidental tipping of the cab.
Patent GB-1162250-A (GB)
Title: Improvements relating to Electric Switches
Inventor: ANGOLD EDWARD BARNABAS
IPC: H01H13/36
Filed: 1966-11-30
Abstract: 1,162,250. Retractive switches. PLESSEY CO. Ltd. 24 Nov., 1967 [30 Nov., 1966], No. 53728/66. Heading H1N. A rigid arm 3 carrying moving contact 1 is pivoted on a cranked member 5 itself pivoted on a fixed support 7 and a wire spring 8 maintains the assembly and provides overcentre snapaction when a plunger 9 is depressed. A lateral projection 10 on plunger 9 urges member 5 downwards and gives a longitudinal movement to arm 3 causing contact 1 to wipe fixed contact 2 until the pivot point 4 passes below the line of action A of spring 8, whereupon contact 1 snaps over to a back stop 11. Owing to the spacing d between the fixed end 12 of spring 8 and pivot point 6 of member 5, the spring 8 exerts a restoring force on the assembly and renders the switch retractive. In a constructional embodiment (Fig. 2, not shown) the plunger 9 is of inverted T-shape to act on two mechanisms (13, 14) mounted on a common base with an upstanding integral wall (21) between them and with back contacts (16, 17) to provide changeover switches.
Patent GB-1243527-A (GB)
Title: Door sealing strip arrangement
Inventor: ISAMATSU KUNIO
IPC: E06B7/22
Filed: 1968-11-13
Abstract: 1,243,527. Door sealing arrangement. K. ISAMATSU. 13 Nov., 1968 [11 Dec., 1967], No. 53760/68. Heading EIJ. A door sealing arrangement in a door in which the jambs and lintel have rebates to provide a surface 12 against which the door abuts and is stopped, consists of sealing strip secured to the door frame stop surface 12 by a flat portion 15 and a folded back portion 4 connected to and diverging from portion 15 and terminating in a bulbous bead 3 for resilient contact with the door in its closed position, and a second strip 6, Fig. 4, having a flat portion for securing it to the marginal lower edge portion of the door and a resilient part 8 extending down to the sill and terminating in a bulbous bead 7 for resilient and rubbing contact with the sill, both strips 4 and 6 having their exposed surfaces covered with a pile.
Patent GB-1213830-A (GB)
Title: A drive
Inventor: HOFMANN DETLEF
IPC: F16H21/46
Filed: 1968-11-13
Abstract: 1,213,830. Linkwork; differential gearing. D. HOFMANN. 13 Nov., 1968, No. 53862/68. Headings F2D and F2K. A rotary shaft 36 is coupled to a rotary shaft 37 by means of cranks 44, 45 and crank-pins 47, 46 which pass through rotary and sliding bearings 38, 39 located at right-angles to each other. In a modification, crank arms 44, 51, Fig. 2, are of unequal length whereby rotation of a shaft 36 produces an oscillating rotary movement of a shaft 53. In another modification, a rotary bearing 56, Fig. 3, is located axially on a crank-pin 55 whereby rotation of shaft 36 produces rotation and axial reciprocation of a shaft 54. In a further modification, crank arm 45 is extended in order to produce rotary oscillation and axial reciprocation of shaft 54. Fig. 5 shows an arrangement in which rotation of a shaft 36 produces rotary oscillation and axial reciprocation of an intermediate shaft 57 and rotation of. In the arrangement shown in Fig. 6, rotation and axial reciprocation of a shaft 60 produces rotation and axial reciprocation of a shaft 54. Fig. 7 shows a similar arrangement in which a connecting rod 62 is reciprocated and rotary bearings 55, 59 are guided in an elliptical path in the centre plane between the axes of shafts 54, 60. In another variant of the arrangement shown in Fig. 6, the rotary bearings 55, 59 are connected by a pivot pin whose axis is at right-angles to their axes. In an arrangement forming a differential mechanism, shafts 65, 66, Fig. 9, carry cranks 78, 79 having crank-pins 80, 81 on which rotary and slidable bearings 82, 83 are mounted, the bearing being pivotally mounted on the ends of an arm 86 which is secured to a shaft 87 slidably and rotatably mounted in a casing 73 which is adapted to be rotated by bevel gears 74, 75. In an apparatus for drawing ellipses, a driving shaft 13, Figs. 11, 12, carries a crank-arm 11 to which a crank-pin 10 is secured. Two shaft halves 4, 5 are rotatably and slidably mounted in bores 2, 3 in a frame 1, and carry crank-arms 6, 7 which are permanently interconnected by a bridge piece 8. A cylindrical bearing member 9 is rotatably mounted between the crank-arms 6, 7 and the bearing 9 rotatably and slidably receives the crank-pin 10. A bar 16 is attached to crank-arm 6 at an angle #, the complement of the angle of inclination α of the shaft 13, and carries an adjustable member 17 to which a slide 19 is rotatably attached. A tube 20, carrying an ink pen 25, is rotatably and slidably mounted in the slide 19 and is guided by members 21, 22 mounted on a fixed vertical fulcrum 23.
Patent GB-1237411-A (GB)
Title: Process for the manufacture of 1,2,-dichloroethane
IPC: C07C19/045
Filed: 1968-11-14
Abstract: 1,237,411. 1,2-Dichloroethane; trichloroethane. WACKER-CHEMIE G.m.b.H. 14 Nov., 1968 [16 Nov., 1967], No. 54006/68. Heading C2C. 1,2-Dichloroethane is prepared by reacting ethylene with chlorine in dichloroethane as solvent in the presence of 0À4 to 4 grams of SnCl 4  per litre of reaction mixture at a temperature of 0-50‹ C. and a pressure of 0-5 atmospheres gauge, at least a part of the reaction product being conducted continuously to a distillation column where at least some of the 1,2- dichloroethane is distilled off, the distillation residue containing catalyst being recycled in such a manner that the reaction volume remains substantially constant. The chlorine may be added in gaseous or liquid form. A minor amount of trichloroethane which is formed during the reaction is recycled to the reactor as part of the distillation residue.