baber/WOPTO huggingface dataset:
Patent GB-536810-A (GB)
Title: Improvements in or relating to artificial dentures
IPC: A61C13/00
Filed: 1939-09-18
Abstract: 536,810. Artificial teeth. DENTISTS' SUPPLY CO. Sept. 18, 1939, No. 26102. Convention date, May 31. [Class 81 (ii)] [Also in Group XXIII] Artificial dentures are formed with the teeth and dental base fused together in an integral unit, the ceramic material for the teeth consisting of a mixture of 70 - 90 per cent feldspar and 10-30 per cent amorphous silica and for the denture base of a mixture of 65 - 80 per cent feldspar, 10 - 20 per cent amorphous silica and 5-15 per cent borax glass. These two mixtures have substantially the same expansion and contraction curves and so may be fused together without checking or cracking. A temporary denture base 13 with artificial teeth 14 set therein is formed on a model of the mouth 10 fixed in the lower half of the flask 12. The upper half of the flask is then placed in position and investment material introduced. When it has set the two halves of the flask are separated and the temporary denture base melted away, leaving the teeth fixed in the investment material. The mould so formed is then filled with the denture base ceramic material 19 and the flask placed in a kiln and heated to the softening temperature of this material. A weight may be placed on the top of the flask to assist the formation of the denture. The investment material used consists of 10 - 25 per cent Hydrocal (a form of calcium sulphate), 30 - 80 per cent feldspar and 10-45 per cent silica grog.
Patent GB-962579-A (GB)
Title: Improvements relating to dioxazine dyestuffs and their use
IPC: C09B19/02
Filed: 1961-07-19
Abstract: Plastics and lacquers are coloured by pigments of the formula: <FORM:0962579/C3/1> wherein R is a hydrocarbon radical which may be substituted, Hal is chlorine or bromine and the rings A and B may be further substituted. In examples (11) a pigment of the above formula where R is p-methoxyphenyl, Hal is chlorine and A and B are not further substituted is milled with titanium dioxide, a solution of a modified urea-alkyd resin in xylene/butanol 1:1, terpentine oil and xylene to give an orange lacquer; and (12) a pigment of the above formula where R is 3:4-dimethylphenyl, Hal is chlorine and A and B are not further substituted is mixed with polyvinyl chloride, dioctyl phthalate, dibutyl tin dilaureate and titanium dioxide and rolled to give a red foil.ALSO:The invention comprises dyes of the formula <FORM:0962579/C4-C5/1> wherein R is a hydrocarbon radical which may be substituted, Hal is chlorine or bromine and where the rings A and B may be further substituted. The dyes are made by condensing a 3-aminophenyl ketone, which is unsubstituted or contains a hydroxy or ether group in the p-position to the keto group, with tetrachloro or tetra-bromo-benzoquinone and ring-closing the condensation product which may or may not be isolated.  The radical R may be a substituted or unsubstituted aromatic, araliphatic, cycloaliphatic or aliphatic radical many of which are listed.  The ring closure may be effected by heating in a high-boiling organic solvent in the presence of an oxidizing agent and, if desired, acids, acid halides, benzotrichloride or metal halides.  The ring-closure may also be effected in sulphuric acid, oleum, chlorsulphonic acid or polyphosphoric acid.  Examples are given. The dyes colour printing inks and in an Example (10) a bluish-red printing ink is made by milling a pigment derived from tetrachlorobenzoquinone and 3-amino-4-methoxybenzophenone with aluminium hydroxide, linseed oil varnish of medium viscosity and cobalt linoleate.
Patent GB-1343726-A (GB)
Title: Method of protecting inorganic or organic glass against dimming or fogging
IPC: E06B7/12
Filed: 1971-04-19
Abstract: 1343726 Protecting glass against condensation CESKOSLOVENSKA AKADEMIE VED 19 April 1971 [13 March 1970] 26142/71 Heading B2E A method of protecting glass against fogging or dimming by water or ice comprises providing a glass on one or both sides with a coating of a first polymer which adheres well to the glass and applying to the first polymer at least one coating comprising a hydrophilic polymeric salt of which one ion comprises a charged entity covalently bonded to the polymeric chain while the other ion is not polymeric. The first polymer is preferably hydrophobic, e.g. poly(glycidylmethacrylate) on to which the hydrophilic polymeric salt is preferably cross-linked. The ions which are covalently bonded may be anions such as -SO<SP>-</SP> 3 -OSO 3 <SP>-</SP>, -OPO 3 <SP>2-</SP>, -COO<SP>-</SP> or -C-O<SP>-</SP> in which case suitable cations are | NOH<SP>1</SP> alkali metal, or these cations may be covalently bonded on the polymeric skeleton in which case the most suitable type of anions are Br<SP>-</SP>, Cl<SP>-</SP>, F-, SO 4 <SP>2-</SP>, PO 4 <SP>2-</SP>, or P 2 O 7 <SP>2-</SP> or the anions of organic acids such as ethane or methane sulphonic acid, ethylene disulphonic acid or formic or acetic acid. A preferred copolymer is that of acrylonitrile or methacrylonitrile with methacrylic or acrylic acid but others are specified in the Examples.
Patent GB-1200850-A (GB)
Title: Improvements in/or relating to semi-automatic and automatic fire-arms
Inventor: MAILLARD BERNARD
IPC: F41A21/48
Filed: 1968-07-16
Abstract: 1,200,850. Firearms. BREVETS AEROMECANIQUES S.A. 16 July, 1968 [31 July, 1967], No. 26170/69. Divided out of 1,200,847. Heading F3C. The subject-matter of the Specification is as that in parent Specification 1,200,847 but the claims relate to the mounting of the barrel in the breechcase.
Patent GB-872643-A (GB)
Title: Producing moulds for foundry purposes
IPC: B22C7/02
Filed: 1958-08-14
Abstract: 872,643. Moulding-processes. SULZER FRERES S.A. Aug. 14, 1958 [Aug. 15, 1957], No. 26207/58. Class 83 (1). A method of producing a mould by the lost wax process consists in using a pattern produced from molten urea and a substance, such as polyvinyl alcohol, which increases the toughness of the finished pattern. Instead of the alcohol, a water-soluble urea-formaldehyde condensation product or a partially-polymerized watersoluble melamine acid may be used. For example, a turbine blade pattern is made in an injection-moulding machine from powdered urea with 3% by weight of polyvinyl alcohol. The pattern is dipped repeatedly in a solution of 0.51. 1. of ethyl silicate, 2.51. alcohol, 0.251. water, 5 c.c. hydrochloric acid and 18 kg. zirconium sand. The mould is then dried and placed in a bath of 5% by weight of nitrous acid in water, which may be vibrated ultrasonically. The pattern is dissolved out and the mould dried and fired for 6 hours at 500‹ C. The solvent may, however, be in vapour form. Alternatively, a similar pattern is thinly coated by dipping it in powdered quartz and a binding agent. It is then placed in a cylindrical moulding box and packed around with a second moulding material. The pattern is subsequently melted out during firing. Specifications 872,640, 872,641 and 872,642 are referred to.
Patent GB-519627-A (GB)
Title: Improvements in and relating to beverages
IPC: A23L2/38
Filed: 1938-09-08
Abstract: 519,627. Materials for making infusions. CHOLODNY, D. Sept. 8, 1938, No. 26233. [Class 129] A substance to be infused in hot water for making a beverage is prepared by drying and roasting orange peel which may be mixed with orange pulp.
Patent GB-1490782-A (GB)
Title: Magnetic pump fountain pen
IPC: B43K5/12
Filed: 1975-12-01
Abstract: 1490782 Reservoir pens TIN WAH-CHEUNG 1 Dec 1975 [20 June 1975] 26280/75 Heading A4K [Also in Division B6] A fountain pen incorporates a reservoir in part formed by a barrel 10, with an internal magnetic piston 14 which moves along the interior of the barrel 10, when magnetic ring 11 is moved along its exterior. Preferably the pen has alternative, interchangeable writing heads 5, comprising multiple-point, and single-point nibs, ball-points and fibre tips, in coarse, medium, fine and very fine variants.
Patent GB-462556-A (GB)
Title: Improvements in lubricating compositions
IPC: C10M173/00
Filed: 1935-09-25
Abstract: A lubricating-composition comprises a mineral oil, an emulsifying agent and water in which is incorporated a neutral ester of phosphoric or thiophosphoric acid containing at least one aryl group. Suitable phosphate esters include triphenyl-, dibutyl phenyl-, tricresyl, monocresyldiphenyl-, trixylenyl-, trinaphthyl-, tribenzyl- and tri-o-diphenyl phosphates; also neutral esters described in Specifications 450,454, 450,891, and 455,014, [Group IV].  Mineral oils include petroleum, paraffin or paraffin distillates, e.g. kerosene.  Emulsifying agents may comprise soaps, e.g. calcium or alkali metal soaps, lead soaps, aluminium stearate or oleate, rosin soaps, rosin oil, sulphonated oils and triethanolamine.  The lubricant may also contain vegetable and animal oils and fats, glycerine, stearic acid, natural and artificial waxes, rosin, mica, talc, graphite, cellulose esters and ethers, and filling materials, e.g. gypsum, asbestos and ground cork.  In examples: (1) a cup grease is prepared from lard, quicklime, petroleum and tricresyl phosphate, the lime being hydrated to form a thin paste, and heated with the lard and part of the oil until a soap is formed, after which the remaining ingredients are added; (2) the cup grease of (1) is mixed with cylinder stock, graphite and talc to produce a heavy graphite oil; (3) a cup grease is prepared from tallow, sodium hydroxide, cylinder oil, tricresyl phosphate and water; (4) a heavy drawing compound is produced from tallow, thin mineral oil, Japan wax, caustic soda and water, into which is stirred lithopone, flowers of sulphur and tricresyl phosphates with a small proportion of cresylic acid; (5) a boring oil is produced from oleic acid, thin mineral oil, caustic soda, alcohol and tricresyl phosphate, the product being emulsified in water.  The Specification as open to inspection under Sect. 91 describes generally the addition of an ester of phosphoric or thiophosphoric acid to an oil, grease, wax or other oily or unctuous material and discloses also the following additional examples: (5) a crank-case lubricant comprising a mineral oil with an addition of 0,2--10 per cent of tricresyl phosphate; (6) an upper cylinder lubricant or motor fuel comprising petrol, benzol, petroleum jelly and tricresyl phosphate; (8) an artificial thread lubricant comprising mineral oil, neatsfoot oil and tricresyl phosphate; (10) penetrating oil comprising light mineral oil, kerosene, secondary butyl alcohol and tricresyl phosphate with a little cresylic acid; (11) transformer oil comprising petroleum oil and tricresyl phosphate; (12) non-greasy, hard lubricant comprising ethylene glycol monoethyl ether, nitrocellulose, aluminium stearate, dimethyl phthalate, tributyl phosphate, monocresyl diphenyl phosphate and ethoxyethyl acetate; (13) leather stuffing comprising ozokerite, paraffin wax, rosin oil, mineral oil and tricresyl phosphate; and (15) steam-turbine lubricant comprising equal parts of chlorinated diphenyl and tricresyl phosphate.  This subject-matter does not appear in the Specification as accepted.
Patent GB-1080415-A (GB)
Title: Process for the production of nitriles
Inventor: SCHWARZ HANS-HELMUT
Filed: 1965-06-23
Abstract: Nitriles are obtained by the reaction of ammonia with carboxylic acids in the presence of catalysts by introducing a carboxylic acid in liquid form into the catalyst, which is kept in the moving or fluid state by ammonia gas at a temperature above 200 DEG  C., and removing the resulting carboxylic acid nitrile from the moving or fluid bed.  The ammonia is suitably employed in an amount of 3 to 30 times the theoretical quantity and it may be mixed with an inert gas, e.g. N2 or water vapour.  The catalyst may be silica gel, boron phosphate or silica gels and aluminium oxides impregnated with acids or esters such as phosphoric acid and phosphorus esters and boron phosphate.  The examples describe the preparation of adipic acid and sebacic acid dinitriles.
Patent GB-1245554-A (GB)
Title: Improvements in or relating to the fabrication of blade lamellae
IPC: B29C70/54
Filed: 1970-06-02
Abstract: 1,245,554. Moulding lamellae. TRW Inc. 2 June, 1970 [27 Oct., 1969], No. 26608/70. Heading B5A. A method of making lamellµ for blades such as turbine blades comprises inserting reinforcing filaments into parallel grooves formed in matching contoured faces of a die block, positioning the filament ends to form the perimeter of the lamellµ, filling the space in the die block containing the filaments with molten binding material and causing the material to solidify. Apparatus includes a block 1 having matching halves 3 and 5 into which ends of tungsten stop wires 13 of equal length are inserted through a feed guide 21, the other ends of stop wires 13 abutting a lamellµ profiler 17. Reinforcing filaments 11 are inserted into the block through a feed block 25 to abut the stop wires. The stop wires are removed and guide 21 is withdrawn, then resin is injected into the spaces in block 1 by an injection assembly (Fig. 3, not shown). The resin is solidified by heat treatment. The reinforcing filaments 11 are sheared at end 23 of the block and the lamellµ is removed. A blade is fabricated by stacking such lamellµ together after trimming, and curing.
Patent GB-463417-A (GB)
Title: Improvements in and relating to hydraulic motors, rotary engines, pumps, blowers and the like
IPC: F01C21/08
Filed: 1935-09-26
Abstract: 463,417. Rotary engines; stuffing-boxes. NASH, A. F. Sept. 26, 1935, No. 26627. [Classes 110 (ii) and 122 (v)] A rotary engine or pump comprises a casing 2 with a fixed liner 4, and an eccentric rotor 6 having pairs of vanes 7 separated by rods 8. A driving pulley 24 is secured to the shaft 11 by a nut 22 and washer 23. An end cap 26 is screwed into position against a packing ring 27, and held against rotation by a split pin 28. Radial passages 33, 34, in the rotor permit fluid under pressure to flow from the working chamber 5 to transverse passages 37, to press the vanes outwards. Passages 38 allow communication between the two ends of the rotor to equalise the pressures. Screwed rods 39 are used to secure the rotor ends 29, 30, to the centre section 6. The cross-section of the working-chamber is built up of arcs of circles whose centres coincide with the axis of rotation of the rotor. A gland packing ring 18 has packing 19, 20, outside and inside the ring. A nut 15 secures the gland ring in position.
Patent GB-789698-A (GB)
Title: Improvements in or relating to polyethylene compositions and articles made therefrom
IPC: C08K5/20
Filed: 1955-09-16
Abstract: A composition comprises polyethylene and a saturated primary fatty acid amide containing from 10 to 16 carbon atoms in the acid group, e.g. lauramide, myristamide and palmitamide.  Films made therefrom have a reduced coefficient of friction, are resistant to blocking and have improved antistatic qualities.  Waxes, antioxidants, dyes, pigments, lubricants, and antistatic agents may also be present.  The composition may be prepared by adding the amide as a solid, solution or slurry in water or other non-solvent to dry fluffy or powdered polyethylene or the amide may be melt-blended or a concentrate formed.  The composition may be cast, extruded or moulded into films, sheets, rods, tubes, piping and filaments or coated on to paper, cloth, wire, metal foil, glass fibre mats and synthetic or natural textiles.
Patent GB-354089-A (GB)
Title: Improvements in apparatus for facilitating the handling of coins or other small objects
IPC: G07D9/02
Filed: 1930-09-08
Abstract: 354,089. Coin &c. handling appliances. LOTTRUP. J. S., 26, Taasingegade, Copenhagen. Sept. 8, 1930, No. 26792. Convention date, Sept. 9, 1929. [Class 116.] In coin &c. handling appliances, the normally substantially horizontal receiving plate a is provided at one or both ends with a pivoted member b, to which it is directly or indirectly hinged, and which may be operated to tilt the plate and to act as a shoot for the coins &c. The frame e may be separate from or integral with the plate, while the members b may be shaped as shown in Fig. 3 or provided with flanges k. In another form, Fig. 4, links f and stops g are provided, the latter serving to limit the positions of the tray and the members b. In each form the members b may be shaped to facilitate collection of the coins.
Patent GB-1442611-A (GB)
Title: Electrostatic imaging system and apparatus therefor-
IPC: G03G15/20
Filed: 1973-06-05
Abstract: 1442611 Fixing toner images A K CHATTERJI 5 June 1973 [5 June 1972] 26907/73 Heading G2H A copying apparatus of the type in which a heat-fusible toner image is produced on the surface of a copy substrate, includes a rotatable radiant energy receiver having a curved surface, a radiant energy emitter 41 mounted adjacent the receiver to heat the latter by means of radiant energy directed thereon, and means 54 for transporting a copy substrate with a toner image thereon tangentially past the curved surface to cause substantially pressureless contact between the toner image and the curved surface so that the image is fused and thus fixed to the copy substrate. As shown the apparatus is an electro-photographic apparatus having a photo-receptor drum 16 on which a toner image is formed and transferred to a paper substrate; the image-forming exposure of an original D may be effected using light from the radiant energy emitter 41 which is constituted by two lamps, the light being transmitted by one or two optical fibres 46, 46'. The imaged substrate is then contacted with the heated receiver 40 (in the form of a cylinder) using a frame 52 having spaced steel discs 53 with rubber rings. The surface of cylinder 40 may be coated with a release agent. An electrical control system is described.
Patent GB-1375513-A (GB)
IPC: F16D69/04
Filed: 1973-06-06
Abstract: 1375513 Brake shoe assemblies JURID WERKE GmbH 6 June 1973 [7 July 1972] 26953/73 Heading F2E  A drum brake lining comprises an arcuate metal backing plate defining opposite concave and convex surfaces, and a friction liner secured by an adhesive layer to the convex surface, the concave surface being adapted to have a coefficient of friction at least equal to that of the convex outer surface of the friction liner. The adaptation of the concave surface may be effected by roughening it or coating it with a friction layer. In the lining shown in Fig. 1 a perforated metal backing plate 11 has had bonded to it by an adhesive layer 13 a friction liner 12 containing fibres (e.g. of asbestos) metal, metal oxides or hydroxides and thermosetting resins or rubbers, the adhesive layer 13 being cured and set in an oven. The friction layer 14 on the "shoe" side of the backing plate 11 consists of metals, metal oxides or hydroxides and abradants in comminuted form bound by rubber and/ or a phenolic resin: it is applied to the backing plate by rolling, pressing or sticking. Fig. 5 shows part of a complete shoe where holes 55 in backing plate 51 allow bonding between friction interlayer 54 and friction liner 52 (and optionally adhesive layer 43). The interlayer 54 is contained by a step 112 in the backing plate, and the backing plate is fixed to a base 57 on shoe 56 by spot welds 511 or by wedge or screw devices. In Fig. 4, the lining is secured by turning down the leading end 45 of a metal backing plate 41 into a slot 46 in brake shoe 47 and anchoring it by a wedge 48 and screws 49. Liner 42 is grooved at 421 to improve contact with the drum. Preferably, where there is a preferred direction of rotation of the brake drum, only the leading end (i.e., that end first encountered by a given point on the drum) of the backing plate is secured to the shoe body. The liner 12 may be applied to a metal backing plate previously provided with bonding layer 13, and the assembly then heated, pressed and cured. The backing plate may be steel or light metal alloy.
Patent GB-636634-A (GB)
Title: Improvements relating to heaters for preventing freezing of the cooling water of internal combustion engines
IPC: F02N19/10
Filed: 1947-10-08
Abstract: 636,634. Electric immersion heaters. RUNBAKEN, J. H. Oct. 8, 1947, No. 27010. [Class 39 (iii)] [Also in Group XIII] Relates to an electric heater for preventing freezing of the cooling water in the radiator of an internal combustion engine and of the kind in which the heater has a body part d which screws into the aperture in the base b of the radiator in which the drain tap is usually fitted and which is itself tapped to receive the drain tap a. According to the invention, the actual heating element j projects into the water space of the radiator. In the form shown, the heating element is guarded by a sleeve f provided with holes g and is carried within the sleeve between the cap hand a plug i, the insulated portion j<SP>1</SP> of the element making a fluid-tight joint with the said plug. Electrical connection with the supply is made through a socket n which is wired to the element j and an earth return socket o, the two sockets being of different sizes.
Patent GB-835625-A (GB)
Title: Improved method for recovery of olefin polymers from solution
Filed: 1957-08-28
Abstract: Normally solid olefin polymers are recovered from organic solvent solutions thereof, which are maintained under superatmospheric pressure, by a process which comprises removing heat from the solution so as to provide a substantially uniform rate of temperature decrease by reducing the pressure on the solution to atmospheric pressure whereby liquid is vaporized therefrom and some polymer precipitated and then removing additional heat from the remaining solution without any further vaporization of liquid from the solution whereby additional polymer is precipitated, and subsequently separating the solid polymer from the solution.  The additional heat may be removed from the solution by the addition of a liquid of lower temperature than the temperature of the solution.  The initial solution may be the effluent from a polymerization zone.  In a flow diagram the recovery process is shown in conjunction with the polymerization process.  The olefin polymer may be a homopolymer or copolymer of ethylene, propylene, butylene, butadiene, or isoprene. The preferred polymers are those of ethylene which have a specific gravity of at least 0.94 at 20 DEG  C.  The polymers are preferably made by polymerizing the olefine or olefines in an inert organic solvent or diluent in the presence of a chromium oxide catalyst containing hexavalent chromium with silica, alumina, silica-alumina, zirconia or thoria.  The Specification mentions the usual hydrocarbon solvents.  The solvent exemplified is cyclohexane.  Specifications 790,195, 804,641 and 822,983 are referred to.