baber/WOPTO huggingface dataset:
Patent GB-990025-A (GB)
Title: Improvements in or relating to polyvinyl chloride compositions
Inventor: MANN ALAN DAVIES
IPC: C08L27/06
Filed: 1961-05-04
Abstract: Vulcanizable rubber modified plastisols comprise (a) a dispersion of a vinyl chloride polymer in at least one plasticizer in which the polymer is substantially insoluble at room temperature and (b) a synthetic rubber, the proportion of rubber to polymer being 10:90 to 50:50 by weight and said dispersion not having been gelled in the absence of synthetic rubber.  The polymer may be polyvinyl chloride or a copolymer of vinyl chloride with vinylidene chloride, vinyl acetate, styrene, butadiene, chloroprene, isoprene or acrylonitrile. Specified plasticizers are dioctyl phthalate, dioctyl adipate, dioctyl sebacate, tritolyl phosphate, trixylyl phosphate, polypropylene sebacate and polypropylene adipate. The synthetic rubber may be polychloroprene or a polysulphide rubber.  The compositions may also comprise polyesters, amides, polyamides, stabilizers, extenders, anti-static agents, flame resistant agents, pigments and vulcanizing ingredients. The compositions may be applied to textile fabrics and cured to give materials suitable for making conveyer belts and hose. Examples describe compositions comprising: (1) polyvinyl chloride, dioctyl phthalate, dioctyl sebacate, neoprene, zinc oxide and 2-mercaptoimidazoline, and (2) polyvinyl chloride, dioctyl phthalate, polysulphide rubber, quinone dioxime, diphenyl guanidine and sulphur.ALSO:Textile fabrics may be coated with vulcanizable rubber modified plastisols comprising (a) a dispersion of a vinyl chloride polymer in at least one plasticizer in which the polymer is substantially insoluble at room temperature and (b) a synthetic rubber, the proportion by weight of rubber to polymer being 10 : 90 to 50 : 50 and said dispersion not having been gelled in the absence of synthetic rubber.  The polymer may be polyvinyl chloride or a copolymer of vinyl chloride with vinylidene chloride, vinyl acetate, styrene, butadiene, chloroprene, isoprene or acrylonitrile.  Specified rubbers are polychloroprene and polysulphide rubbers.  Specified plasticizers are dioctyl phthalate, adipate and sebacate; tritolyl and trixylyl phosphates; and polypropylene sebacate and adipate.  The compositions may contain conventional additives and vulcanizing agents and the coated fabrics may be used in the manufacture of conveyer belts and hose.  In examples textile fabrics are coated with compositions comprising polyvinyl chloride, dioctyl phthalate and (1) polychloroprene, dioctyl sebacate, zinc oxide and 2-mercapto imidazoline, and (2) polysulphide rubber, quinone dioxime, diphenyl guanidine and sulphur.
Patent GB-416696-A (GB)
Title: Improvements in controllers for electric motors
IPC: H01H1/58
Filed: 1933-06-06
Abstract: 416,696. Drum controllers. ENGLISH ELECTRIC CO., Ltd., 28, Kingsway, London, and SMITH, S. A., 16, Lynton Avenue, Bradford, Yorkshire. June 6, 1933, No. 16200. [Class 38 (iii).] A controller, which may be of the drum type arranged for floor mounting as used in electric traction, has a cable outlet in the form of a part 2 of the bottom of the controller casing 1, including part of the edge thereof which meets a removable controller cover 7, detachable sideways from the main part of the casing. The outlet 2 is secured by screws 3, and a canvas sleeve 4 and a strip of felt 5 are fixed to the bracket 2 around the edge of the cable aperture by rivets 6. The outlet may include part of the back of the casing 1.
Patent GB-910393-A (GB)
Title: An improved trimming strip for use upon the edges of flat roofs
Inventor: BASSETT REGINALD JAMES
IPC: E04D13/15
Filed: 1960-05-07
Abstract: 910,393. Roofs trimming strips. BIRMING- HAM ASPHALTE & PAVING CO. Ltd. May 1, 1961 [May 7, 1960], No. 16214/60. Class 20 (4). A trimming strip for the edge of a flat roof comprises a channel-sectioned part b integral with a part a of obtuse-angled section. In use the part a rests upon a wood wool slab and is covered with bituminous felt d. The part b rests on a fascia board e of concrete.
Patent GB-575920-A (GB)
Title: Improvements in or relating to means for ventilating the crank-chambers of internal combustion engines
IPC: F01M13/02
Filed: 1944-08-28
Abstract: 575,920. Ventilating crank cases. DEHN, F. B. (Willys-Overland Motors, Inc.). Aug. 28, 1944, No. 16308. [Class 7 (ii)] Suction for ventilating the crank-case is obtained from a shroud 30 projecting from the radiator 24 adjacent to fan 29 and connected by a pipe 32, preferably flexible, to the crank-case filler 22. The shroud has substantially the same diameter as that of the fan and the connecting pipe 31 may have a filter therein. Air is drawn into the crank case through a filter which is preferably arranged on the opposite side to the filler 22 and forms part of the cover of the valve gear chamber.
Patent GB-143084-A (GB)
Title: Improvements in and relating to self-acting syringes for hypodermic injections
IPC: A61M5/315
Filed: 1919-06-28
Abstract: 143,084. Luswergh, E. June 28, 1919. Syringes.-A hypodermic syringe is constructed so that the penetration of the needle, the injection of the fluid, and the withdrawal of the needle are performed automatically. The apparatus comprises three telescopic cylinders A, C, F with springs M<1>, M interposed as shown. The cylinders are held in the closed position, Fig. 3, by means of a tooth on a lever G projecting through an opening L<1> in the cylinder F and an underlying opening L<2> in the cylinder C. The cylinder F is then drawn downwards by momentarily releasing the tooth on the lever G and allowing it to snap through another hole in the cylinder C and project above the enlarged lower end of the cylinder A, which, on being drawn upwards, causes the tooth to snap over and maintain it in the drawn-out position. The filled syringe is then secured in the cylinder A by a screwed ring H. A rack R is then drawn out of its sheath Q until a finger b at its upper end can be rotated so as to rest upon a button a at the top of the piston-rod t. The rack, while being drawn out, rotates a spur-wheel T which winds up a spring U held in a drum V. A pawl Y acting on a ratchet-wheel X secured to the wheel T prevents unwinding. A thimble Z sliding on the cylinder F regulates the depth of penetration. On applying the apparatus to the part where the injection is to be made and pressing on the lever G, the spring M<1> is released and carries down the part A, which, by means of the attached lugs B<1>, B<2>, carries down the driving- mechanism and causes the needle to penetrate as far as allowed by the thimble Z. As the part A moves down, the projecting part of the cylinder C lifts the pawl Y and releases the spring U, which drives the rack R and, by means of the finger b, depresses the piston and expels the extents of the syringe. At the limit of its down. ward movement, the rack meets the tails e of a pawl E, which releases the spring M, and thus raises the cylinders C, A and thereby withdraws the needle.
Patent GB-776359-A (GB)
Title: Improvements in the continuous manufacture, in indefinite lengths, of multi-tubular electrical heating strips from synthetic resins, more particularly for the construction of pads and blankets
IPC: B29C65/04
Filed: 1954-06-03
Abstract: 776,359. Seaming. NEGROMANTI, A. May 31, 1955 [June 3, 1954], No. 16432/54. Class 42 (1). [Also in Group XI] In making electric heating pads having bare resistance wire passing through tubes of multitubular fabric formed from two sheets or strips of material of synthetic resin or having facings of synthetic resin by sealing them together by dielectric heating or by heated pressure members in straight parallel alternately staggered lines, the strips are sealed together in indefinite lengths, with adjacent tubes of desired width arranged in the direction of the length or the breadth of the sheets. Thus two superposed sheets of synthetic resin or of wool, silk or cotton faced with synthetic resin may be unwound from a roller 2 and are drawn over a table 1 by a roller 3 on which the sheets are rewound after sealing by passage between a lower roller electrode 6 and an upper electrode 7 consisting of a shaft on which are threaded rotatable metal discs 8 spaced apart and insulated from one another. The electrodes are connected to a H.F. generator so that the strips are sealed together by dielectric heating to form parallel tubes. The electrodes may be de-energized at intervals, and the strips may be cut into units between the welded sections. The even discs 8 are energized separately from the odd discs with a difference in timing, so that the sealed lines are staggered as in Fig. 2. The upper electrode may be a metal roller 10 with staggered longitudinal ribs 12, so that the advancing plastic strips are sealed with transverse staggered lines. In Fig. 6 two strips 16, 17 are drawn downwards in steps by rollers 18, 19 and two electrodes 20, 21 are synchronized to move inwardly while the strips are stationary to seal them together in parallel lines, the sealed strips being wound on a roller 24. The electrodes are de-energized as they are moved apart, and one electrode is displaced alternately to left and right in order to stagger the welds. A moving arm 23 feeds resistance wire from a bobbin 22 in between the sheets so that it lies above a welded line and the wire lies in a tube when the next weld is formed. The sealed strips are finally cut into lengths to form pads or blankets, and are completed by adding current supply wires and by a marginal weld. In place of dielectric heating, the pressure seaming members may themselves be internally heated.
Patent GB-1461514-A (GB)
Title: Carburettor adjustment device
IPC: F02M19/01
Filed: 1974-04-16
Abstract: 1461514 Spray carburetters K L KNOX 16 April 1974 [28 Dec 1973] 16490/74 Headings F1B and F1H Apparatus for controlling and monitoring a carburetter comprises a manually operable knob 14, 15 for connection to each idle mixture screw 12, 13 of the carburetter, a pressure switch 22 connected to a vacuum hose 21 for connection to the carburetter throat, and a warning signal device, a lamp 16, connected to the pressure switch. The pressure switch 22 and the lamp 16 are connected in series to the vehicle battery via the ignition switch 17, and the knobs 14, 15 are mounted on the dashboard. The knobs 14, 15 are operated to adjust the idle mixture screws 12, 13 to increase the vacuum at the carburetter throat sufficiently to cause the pressure switch 22 to switch off the lamp 16.
Patent GB-205146-A (GB)
Title: Improvements in or relating to internal combustion engines
IPC: F01B7/12
Filed: 1922-06-14
Abstract: 205,146. Penning, C. J. H. June 14, 1922. Cylinders receiving liquid fuel.-The engine is of the type comprising a pair of parallel cylinders each having two pistons 2 moving in opposite directions and transmitting their movement through rocking beams 4. According to the invention, both beams are connected to the same crank pin 11 or coincident crank pins respectively by a short rod 12 and a pair of long rods 14 which are rocked together at 17. The shaft is situated midway between the cylinder axes and the effect of this driving gear is that when the engine runs in the direction of the arrow, the exhaust ports 24 are both opened and closed before the air ports 25. The cylinder casing is divided into three chambers the middle one 22 forming a cooling- water chamber and the upper and lower ones 21, 23 either air or exhaust chambers according to the direction of running; there are water spaces with walls 27, 28 between these chambers and the cylinder liners 21. Liquid-fuel admission 30 and starting air valve, mountings are bolted to the liner and work in stuffing-boxes in the cover 34.
Patent GB-599686-A (GB)
Title: Improvements in or relating to the production of pyrazine derivatives
IPC: C07D241/28
Filed: 1944-08-30
Abstract: 2-Amino - and 2-hydroxy-pyrazines are manufactured by treating lumazine, an alkyl- or phenyl-substituted lumazine or phenanthralumazine with an alkali metal hydroxide in aqueous solution (producing the alkali metal salt of the corresponding 2-amino - or 2-hydroxy3-carboxypyrazine, or a mixture thereof, depending on the proportion of alkali metal hydroxide), recovering the free acid from the reaction mixture (e.g. by direct acidification or by way of the barium salt) and decarboxylating this free acid by heating (e.g. to 150-190 DEG  C. or above) in the presence of a solvent, preferably while stirring.  In examples: (1) hydrated lumazine is heated to 170 DEG  C. in a steel bomb with 2.25 molecular proportions of aqueous sodium hydroxide and the reaction mixture is acidified with hydrochloric acid to liberate 2-amino-3-carboxypyrazine, which is then converted to 2-aminopyrazine by heating with liquid petrolatum at 195 DEG  C., or with n-butyl phthalate at 215-220 DEG  C., or with water at 150 DEG  C. in a bomb, or with carbitol acetate or nitrobenzene under reflux, or with quinoline at 215-7 DEG  C., or with sulphuric acid at 240-5 DEG  C.; alternatively the sodium salt of 2-amino-3-carboxypyrazine is heated with sulphuric acid at 240-5 DEG  C., or an aqueous solution of the sodium salt is acidified with hydrochloric acid and the mixture is heated to 150 DEG  C. in a bomb; (2) the quantity of sodium hydroxide is increased to 4 molecular proportions, producing 2-hydroxy-3-carboxypyrazine, which is refluxed with carbitol acetate to form 2-hydroxypyrazine; (3) crude 7-methyl-lumazine is refluxed with aqueous sodium hydroxide, the product is neutralized with hydrochloric acid and ammonia is added followed by barium chloride solution to precipitate the barium salt of 2-amino-3-carboxy-6-methylpyrazine, from which the free acid is obtained by boiling with hydrochloric acid and is then refluxed with 80 per cent sulphuric acid to give 2-amino-6-methylpyrazine; (4) crude 6 : 7-dimethyl-lumazine similarly yields 2-amino-5 : 6-dimethylpyrazine; (5) crude 6 : 7-diphenyl-lumazine similarly gives 2-amino-5 : 6-diphenylpyrazine.  The sodium hydroxide may be replaced by potassium hydroxide.  Specifications 599,687, 599,688, 599,689 and 599,690 are referred to.  The Specification as open to inspection under Sect. 91 comprises also examples (5), (6) and (7) of Specification 599,689, and an additional example in which 2-amino-3-carboxypyrazine is heated to 170 DEG  C. in a steel bomb with aqueous sodium hydroxide and the product is acidified with hydrochloric acid to liberate 2-hydroxy-3-carboxypyrazine.  This subject-matter does not appear in the Specification as accepted.
Patent GB-1089542-A (GB)
Title: Coating compositions
Inventor: JEACOCK ARTHUR
IPC: C09D131/04
Filed: 1963-04-26
Abstract: A coating composition comprises a solution or dispersion of a film-forming material in which is dispersed granules of an inert organic polymer, the size of the granules being such that they pass through a 22-mesh sieve and are substantially retained by a 300-mesh sieve. Suitable compositions comprise a pigmented aqueous dispersion of polyvinyl acetate containing polyethylene granules, a pigmented organic solution of chlorinated rubber containing polyethylene granules, and a non-aqueous dispersion of plasticized polyvinylchloride containing polyvinyl chloride granules.ALSO:A coating composition for making a textured surface comprises a solution or dispersion of a film-forming material in which is dispersed granules of an inert organic polymer, the size of the granules being such that they pass through a 22 mesh sieve and are substantially retained by a 300 mesh sieve.  In examples a chlorinated rubber-primed cement-asbestos sheet is coated with either a pigmented aqueous dispersion of polyvinyl acetate containing polyethylene granules, or a pigmented organic solvent solution of chlorinated rubber containing polyethylene granules, and a steel sheet is coated with a non-aqueous dispersion of plasticized polyvinyl chloride containing polyvinyl chloride granules and stored.
Patent GB-216368-A (GB)
Title: Manufacture of ethyl chloride
IPC: C07C17/08
Filed: 1923-06-26
Abstract: Ethyl chloride is prepared by the interaction of ethylene or gases containing ethylene with hydrochloric acid gas in the presence of sulphur dioxide.  The chloride of ethyl sulphurous acid is formed as an intermediate product.  A catalyst, such as ordinary or activated charcoal, bauxite, burnt pyrites or terracotta, may be present, and increased pressure may be employed.  Examples are given.
Patent GB-419091-A (GB)
Title: Improvements in reflectors more particularly for street lighting
IPC: F21V7/04
Filed: 1933-06-10
Abstract: 419,091. Reflectors. ZEISS IKON AKT.-GES., 72, Schandauerstrasse, Dresden, Germany. June 10, 1933, No. 16640. Convention date, June 11, 1932. [Class 75 (ii).] Relates to a reflector for illuminating an elongated field, particularly for road lighting, and reflecting light rays so that they extend over a larger angle # in the longitudinal direction of the illuminated field than they do laterally thereof. The reflector surrounds the light source L so that the direct rays similarly extend over a greater angle # longitudinally than transversely, the edge of the reflector being so shaped that a line joining the edge points R3, R4 in a longitudinal plane bisecting the transverse angle gamma of emission of direct light lies closer to the light source L than a line joining the edge points Rl, R2 in the transverse plane through the light source. The reflected rays, both in longitudinal planes and in the transverse plane, cross in front of the reflector. In the form shown in Fig. 4, the reflector is made up of two portions A, B of the surfaces E, which are envelopes of surfaces of revolution of curves of the second degree, e.g. paraboloids, having in each case a common focus, coincident at L, and their axes located in planes a a, b b, respectively. Such reflecting surfaces are described in Specification 318,147, [Class 75 (ii)]. Three or more of such envelopes may be used, arranged successively in steps or in the limit being continuous. The envelope A may be modified as shown in Fig. 6, so that the axes of the paraboloids forming the surface A, instead of lying in the plane a a, which cuts the road surface in the line e e, lie in two planes cutting the road surface in lines such as f f. As shown in Fig. 8, the hollow glass body F forming the reflector is extended beyond the silvered part so as to give an even edge. The extended part is clear or made translucent. A diffusing globe G is placed in front of the reflector.
Patent GB-892211-A (GB)
Title: Improvements in thread-rolling heads
Inventor: EATOUGH CLIFFORD
IPC: B21H3/04
Filed: 1957-05-25
Abstract: 892,211. Rolling screw-threads. HERBERT Ltd., ALFRED. May 9, 1958 [May 25, 1957], No. 16659/57. Class 83 (4). A set of angularly spaced thread forming rolls mounted in a head is provided with annular forming ridges between grooves of constant diameter at right-angles to the axes of the rolls, each roll axis being arranged in the head at an angle relatively to the axis of the workpiece corresponding to the helix angle of the thread to be rolled, in which at least the axially outermost forming ridge at the leading edge of each roll is truncated to have a cross-section that, at least at its crest, is formed by at least one straight line and has a smaller diameter than that of the succeeding ridge of the set and the rolls are mounted in a coacting thread-rolling head so that the positions where the truncated ridges successively contact the workpiece will, if their axial cross-sections are superimposed, lie on a curve. A thread-rolling head includes a portion 11 formed with three sets of internal cam surfaces 12 engaging rollers 13 in pivoted 16 carriers 15 for thread-forming rolls A, B and C, each roll being set at an angle. The equiaxially-spaced series of annular ridges of each roll are longitudinally displaced, by one-third of the pitch of the screw-thread to be formed, relative to the cyclically adjacent roll either by displacement from the respective ends of the rolls, or by distance sleeves located in the head. The first ridge of each roll is truncated so that the cross-section of its operative portion is bounded by three straight lines of which one defines the periphery of a flat land and the others define flanks. The radial penetration of each roll is arranged to be less than that of the preceding roll. The successive ridges of each roll may be truncated in steps in the order in which they come into operation. Each roll may be made reversible by appropriately truncating the ridge or ridges at the opposite end of the roll. Specification 711,759 is referred to.
Patent GB-1102470-A (GB)
Title: Improvements in or relating to devices for securing a balance spring to a balance staff
IPC: G04D1/04
Filed: 1966-04-18
Abstract: 1,102,470. Springs. VIROLA S.A. 18 April, 1966 [21 April, 1965; 13 July, 1965], No. 16962/66. Heading F2S. [Also in Division G3] An assembly for securing a balance spring 1 to a staff 4 comprises a pair of securing rings 2, 3 at least one of which is rigidly secured to the staff, the inner extremity of the spring being gripped between opposing faces of the rings. The rings 2, 3 are made of a plastics material such as polyethylene or other thermoplastic or thermosetting resins with or without a hardener and are force fitted or glued to the balance staff. The spring may also be glued to the opposing faces of the rings 2, 3 which may have a shape other than circular. Spiral grooves, slotted bosses or studs may be formed on one of the rings to locate the first one or two coils of the spring.
Patent GB-566344-A (GB)
Title: Polymerization of allyl type primary alcohols and products obtainable thereby
IPC: D21H17/36
Filed: 1942-11-30
Abstract: A process for the oxy-condensation polymerization of an unsaturated primary alcohol containing an olefinic linkage between two carbon atoms, one of which is directly linked to the carbon atom of the carbinol group, comprises heating the alcohol in liquid phase in the presence of a catalyst which is an oxygen-containing gas or an oxygen-yielding substance.  Alcohols specified are allyl, crotyl, b -methylallyl, b -phenylallyl, g -phenylallyl, b -ethylallyl, g -dimethylallyl and b ,g -dimethylallyl alcohols.  Suitable catalysts are hydrogen, benzoyl, sodium, barium, tetralin, acetyl and acetone peroxides, alkali metal perborates and persulphates, or oxygen which may contain nitrogen, carbon dioxide or argon, e.g. air.  Diluents, e.g. hexane, heptane and octane may be present.  The polymer may be recovered by distillation in vacuo or by flash evaporation at low pressure.  It may be purified by treating its aqueous solution with dilute sodium hydroxide, neutralizing with carbon dioxide and hydrogenating in the presence of a Raney nickel catalyst.  The products may be used as adhesives, sizes, grease-proofing impregnants for paper and lubricants.  They may be reacted with phthalic or maleic acids to form alkyd resins; with unsaturated drying oil acids to form drying oils; with carboxylic acids to form esters; and with nitric acid to form explosives.  U.S.A. Specification 2,254,382 is referred to.