baber/WOPTO huggingface dataset:
Patent GB-1279255-A (GB)
Title: Process for the production of 2-methylbutene-2
Inventor: BRADSHAW CHRISTOPHER PATRICK C
IPC: C07C6/04
Filed: 1969-06-24
Abstract: 1279255 2-Methylbutene-2; isoprene BP CHEMICALS Ltd 8 May 1970 [24 June 1969] 31,7.7.6/69 Heading C5E 2-Methylbutene-2, an isoprene precursor, is obtained by the following process sequence:- (a) a feedstock comprising a mixture of n- and iso-butenes is purified to remove dienes and acetylenes, e.g. by passage with hydrogen over a supported nickel-catalyst in which a major proportion of the nickel is in elemental form, the catalyst having been modifiedby treatment with one or more of S,. H 2 S, CS 2  or organic sulphur compounds (in this case some isomerization of butene-1 to butene-2 also takes place); (b) contacting the purified feed at - 50‹ to + 50‹ C. with an alkali-metal/alumina catalyst to isomerize butene-1 to butene-2.; (c): co-disproportionating butene-2 and isobutene by contact at - 50‹ to +500‹ C. with a rhenium heptoxide/alumina catalyst ; (d) separating the stage (c) product to obtain 2-methylbutene-2 and unreacted butenes, e.g. by solvent extraction, urea adduction or fractional distillation; and (e) recycling unreacted butenes directly to the disproportionation step. The 2-methylbutene-2 produced may be conventionally dehydrogenated to isoprene, e.g. by the methods of Specifications 824,237 or 795,047, both of which use calcium nickel phosphate catalysts.
Patent GB-203587-A (GB)
Title: Improvements in or relating to vessels for mixing chocolate and similar substances
IPC: B01F7/00
Filed: 1922-11-21
Abstract: 203,587. Baker, Sons, & Perkins, Ltd., J., and Hickley, H. W. Nov. 21, 1922. Stationary batch-mixers with rotary stirrers.-In a mixing- machine for chocolate &c. comprising a jacketed stationary container provided with horizontal paddles which rotate bodily about a vertical axis while rotating on their own axes, the paddles consist of two solid helicoidal sections constituting together a complete helix. The paddle sections e are mounted in a frame c rotated within the container b by a central shaft b<2>, the paddle shafts d being provided with pin wheels d<1> engaging a normally fixed pin wheel d<3>. The pin wheel d<3> is provided with dog teeth engaging teeth on a ring f, which can be raised to free the pin wheel d<3> by means of a screw c<1>. The paddles on opposite sides of the machine may be of opposite pitch.
Patent GB-875441-A (GB)
Title: Improvements in and relating to extrusion apparatus
Inventor: KEMPSON BERTRAM CARL
IPC: B30B11/22
Filed: 1956-10-18
Abstract: 875,441. Extruding coal-dust &c. COAL INDUSTRY (PATENTS) Ltd. Oct. 10, 1957 [Oct. 18, 1956], No. 31786/56. Class 87(2). Rods of compacted coal-dust are extruded through a nozzle having at least one movable part by a ram and the fluid pressure on said ram controls means to move said part so as to maintain the resistance to extrusion substantially constant. A hydraulic ram (not shown) forces coal-dust M at pressure P through a nozzle having a fixed part 10 and movable sections 11 hinged thereto. Oil at constant high pressure in pipe 15 is supplied to piston/cylinder units 12, 13 and provides a constant pressure on parts 11. Pipe 18 connects valve 19 to the fluid pressure acting on the extrusion ram and if the resistance to extrusion is too high valve 19 is opened so that oil blows from cylinders 13 through pipes 16, 17 and parts 11 open slightly. In the embodiment of Fig. 2 (not shown), the ram pressure acts in opposition to a loading on a single movable mould part and in Fig. 3 (not shown), the nozzle has a zone of increased cross section to provide shear stress and strain on the rod and at a point in its stroke the extrusion ram brings the resistance control into operation.
Patent GB-805031-A (GB)
Title: Improvements connected with hypodermic syringes
IPC: A61M5/32
Filed: 1953-11-17
Abstract: 805,031. Hypodermic injection appliances. MATCHETT, A. Dec. 15, 1954 [Nov. 17, 1953; Aug. 17, 1954], Nos. 31796/53 and 23848/54. Class 81 (2). A hypodermic syringe assembly comprises a cylindrical barrel with removable end caps, which barrel, when not in use, houses a piston-rod a portion of which is screwed to the barrel, the main portion of a hypodermic needle lying within an axial bore in the piston-rod, the piston-rod being removable from the barrel and insertable behind an ampoule inserted into the barrel. When the syringe is not in use the 'barrel A<SP>1</SP> contains the plunger B which is secured by a screwthread B<SP>1</SP> to the barrel A<SP>1</SP> at one end and forms a closure cap B<SP>2</SP> for the barrel A<SP>1</SP> at that end. The hypodermic needle F is located so that a major portion of the mount G and the needle F lies within an axial bore K in the plunger B. A needle adapter H is fitted into the needle mount G and the barrel A<SP>1</SP> is closed by a cap C having a plug with provision for accommodating a hollow pointed needle of the adaptor H. To enable the device to be used, the cap C over the adaptor H is removed and the plunger B is unscrewed from the barrel A<SP>1</SP>. A cartridge-type ampoule is inserted in the barrel A<SP>1</SP> so that the needle F is pushed through the barrel A<SP>1</SP> until it projects ready for use, the plunger B being pushed out of the barrel A<SP>1</SP>. The plunger B is then placed at the other end of the barrel A<SP>1</SP> against a piston stopper X<SP>2</SP> of the ampoule. The piston stopper X<SP>2</SP> may be provided with an extension of smaller diameter which is gripped by an inturned serrated or indented flange surrounding the plunger bore K when not in use. Replacement double-ended needles may be provided, each end of each needle having removable protective covers of glass or synthetic resin. The syringe barrel is made from nylon or other translucent material which may be in alternate thick and thin longitudinal strips. According to the first Provisional Specification, the plunger may be made in two separable parts which enclose the needle, the plunger being removed from the barrel so that the needle may be fitted to the ampoule before it is inserted in the barrel.
Patent GB-1105235-A (GB)
Title: A method and apparatus for controlling the length of a loop of an elongated element of flexible material
IPC: B65H51/30
Filed: 1966-07-15
Abstract: 1,105,235. Automatic control of tension. DAVID & DAVID Inc. July 15, 1966 [Aug. 12, 1965], No. 31962/66. Heading G3R. [Also in Division D1 In a system for controlling the size of a loop in continuously fed material, e. g. textured yarn, by adjustment of the speed of feed or take up drives, changes in the vertical size of the loop are translated into a lateral movement which is detected to effect control. The yarn, comprising four strands, leaves a constant speed winding assembly 12, passes through a heating chamber 16 and along a mandrel 14b and is then looped round inclined guide rods 102, 104. The height of the loop determines the lateral position of the yarn where it passes over the top rod 42 of a ladder type tensioning device, and this lateral position is detected by pivoted feeler rods 94 attached to a shutter Fig. 4 (not shown) between an electric lamp and a photo-cell controlling, via a thyristor circuit, the speed of an electric motor driving four cone winders 26 (one for each strand). The shutter has a tapered arcuate slot whose shape is designed to provide an overall linear relationship between speed and loop displacement. To maintain the loop in a central position despite the speed change necessitated by build up in the diameter of the wound core, the lamp intensity may be varied by a rheostat operated by a core size detecting roller Fig. 6 (not shown).
Patent GB-444308-A (GB)
Title: A naturally aerated beverage
IPC: C12G3/02
Filed: 1935-11-19
Abstract: A naturally aerated beverage is made by mashing elderberries in tilleul, peppermint, vervain or like flavouring, adding thereto lemon juice or wine vinegar and a sugar solution, straining, bottling and allowing to ferment.
Patent GB-203963-A (GB)
Title: Improvements in the making of cement from blast furnace slag
IPC: C04B7/14
Filed: 1922-11-23
Abstract: 203,963. Cochrane, W. R. Nov. 23, 1922. Slag cements.-A mixture of blast furnace slag and calcium carbonate in suitable proportions is subjected to the action of crushing or stamping machinery so as to destroy the vitreous structure of the slag and reduce it to an amorphous powder. The ground mixture is washed with water to remove soluble impurities such as calcium sulphide, and the resulting slurry is calcined and ground in the usual manner.
Patent GB-490113-A (GB)
Title: Automatic detaching device for locked electric plug couplings on coupled vehicles
IPC: B60D1/62
Filed: 1937-11-20
Abstract: 490,113. Two-part couplings. SCHWIEN, F. Nov. 20, 1937, No. 32022. [Class 38 (i)] An electric coupling between two vehicles 14, 15 consists of two members 1, 1a fastened together by a catch 7 attached to the member la and engaging the member 1. In order to release the catch when the two vehicles separate, a lever 4 is pivoted at 3 on a collar 5 clamped to the member 1 and carries a cross-bar 4a that engages a projection 6, on the catch 7 when the lever is moved by a pull on the rope 9. The reaction of the lever on its pivot 3 then disengages the members 1, la after which the spring 10 restores the lever 4 and the plug 1 to their original relative positions so that the contact end of the member 1 is protected by the U-shaped body of the lever 4 and by a pair of arms 11 attached thereto.
Patent GB-406240-A (GB)
Title: Improvements in the rollers of felt hat shrinking machines
IPC: A42C1/08
Filed: 1933-11-17
Abstract: 406,240. Felt-hat machines. FISCHEL, F., Alma Lodge, Wellington Road, and CARRINGTON & SONS, Ltd., S. R., Cale Green, both in Stockport. Nov. 17, 1933, No. 32052. [Class 63.] Rollers of felt-hat shrinking machines consist of compressed pulp, pulp board, or papier machÚ, the peripheral surface of which is provided with protuberances, cavities, grooves, slots, or the like, so as to increase the grip of the surface on the articles under treatment. The rollers are either moulded from paper pulp, straw pulp, or the like, or are built up from discs of strawboard, pasteboard, cardboard, or the like. As shown in Fig. 1, the roller is formed with annular and axial grooves 3, 4, respectively to produce studs 5. In a modification, Fig. 4, the roller is provided with annular grooves 10, or integral rings 6. In a further modification, Fig. 7, crossing helical grooves 8 or studs 9 are provided on the surface of the roller.
Patent GB-293632-A (GB)
Title: An improved process of producing corrugated packing material
IPC: B65D65/40
Filed: 1927-11-29
Abstract: 293,632. Kohrig, H. Nov. 29, 1927. Wrapping-material is formed of corrugated cellulose wadding or other soft material to which a backing of paper &c. is attached by adhesive, which is sprayed on the corrugations or the backing.
Patent GB-428701-A (GB)
Title: The manufacture of water-soluble derivatives of vat dyestuffs and preparations containing the same and the application of the products in dyeing and printing processes
IPC: D06P1/28
Filed: 1933-11-17
Abstract: Salts of acid sulphuric esters of leuco vat dyestuffs are formed with nitrogenous bases containing attached to the nitrogen a straight or branched aliphatic chain with at least one ethereal oxygen and at least one hydroxy group, and which may contain also attached to the nitrogen alkyl, hydroxyalkyl and/or cycloalkyl radicles.  Alkylene groups which are linked with the nitrogen so as to form a ring may also be present.  These salts may be used in dyeing and printing, and may be prepared in situ in the dye baths or pastes.  In examples: (1) the pyridine salt of the acid sulphuric ester of leuco 2 : 1-naphthothioindigo is reacted with the base obtained by treating piperidine with ethylene oxide; (2) a base obtained from triethanolamine and ethyleneoxide is reacted with the acid sulphuric ester of 2 : 7-dibromanthanthrone in the presence of pyridine or dimethylaniline; (3) the acid sulphuric ester of leuco-2 : 1-naphthothioindigo is converted into a salt with trihydroxyethylether of triethanolamine or the acid sulphuric ester of 2 : 7-dichloranthanthrone is converted into a salt with a base obtained from triethanol amine and ethyleneoxide and a printing paste containing the resulting salt formed by adding thioethyleneglycol, starch tragacanth thickener, ammonium thiocyanate, sodium chlorate and ammonium vanadate; (4) a similar printing paste is formed from the assistants used in the previous example, benzyl-p-sulphanilic acid and the acid sulphuric ester of leuco 5 : 5<1>-dichlor-4 : 7 : 4<1> : 7<1>-tetramethylindigo.  Bases may be prepared by the action of alkylene oxides, e.g. ethylene and propyleneoxides upon ammonia or primary hydroxyalkylamines.  Bisdihydroxypropylether of triethanolamine, the dihydroxyethylether of propanediolamine, the triethyleneglycolether of dibutylhydroxyethylamine, the dihydroxypropyl ether of bis-propanediolcyclohexylamine, the dihydroxypropylether of propanediolcyclohexylethylamine and the hydroxyethylether of hydroxyethylpiperidine are mentioned. Specification 295,716, [Class 2 (iii)], is referred to.  The Specification as open to inspection under Sect. 91 comprises also the use of nitrogenous bases having attached to the nitrogen atom, aralkyl groups and alkylene groups linked up to form a heterocyclic ring containing sulphur or oxygen.  This subject-matter does not appear in the Specification as accepted.
Patent GB-209898-A (GB)
Title: Improvements relating to control gear for motor driven vehicles
IPC: B60K1/00
Filed: 1922-11-24
Abstract: 209,898. Murphy, L., and Argson Engineering Co., Ltd. Nov. 24, 1922. Controlling different functions by same handle or lever; setting or retaining devices.-An electric tricycle is controlled by a tiller 6 which is moved from side to side to steer the tricycle and is rotated on its own axis to control the motor, the controller 12 being rotatable on a tube 5 forming an extension of the steering tube 3. The controller drum carries a notched wheel 14 which is engaged by a spring-pressed roller so as to retain the drum in its various operative positions, which include forward speeds, " off, ' brake, and reverse. An indicator plate on the drum can be observed through an opening 18 in the controller casing. The controller may be locked in its " off " position by means of a spring- controlled bolt 19 which is normally retracted and held by a pin 20, but may be released and allowed to project into a hole in the controller drum so as to hold the latter stationary.
Patent GB-1222007-A (GB)
Title: Improvements in and relating to the simultaneous flow-pressing of cylindrical workpieces
Inventor: WENKE KARLHEINZ
IPC: B21C1/26
Filed: 1968-07-05
Abstract: 1,222,007. Rolling. RATIONALISIERUNG EISEN-BLECH-METALLWARENVEB. 5 July, 1968, No. 32219/68. Heading B3M. A number of cylindrical workpieces are rolled in the annular space between two rolls 2 and 6 while supported on axially fed mandrels 4. The mandrels 4, and the spider 3 supporting them, are driven. The centre roll 2 is fixed but the outer roll 6 is rotatable. The mandrels may be fed simultaneously between the rolls or fed successively so that a continuous sequence of rolling takes place.
Patent GB-1453559-A (GB)
Title: Filler metal for welding
IPC: B23K35/30
Filed: 1975-08-01
Abstract: 1453559 Filler metal MESSER GRIESHEIM GmbH 1 Aug 1975 [2 Aug 1974] 32257/75 Heading C7A A filler metal of composition:- Ni 40 to 70% Fe 30 to 60%  Mn 1 to 6% Nb 0À5 to 3% Si 0À01 to 0À5% C 0À01 to 1% Ta 0 to 0À6% replacing an equal weight of Nb, Incidental ingredients 0 to 0À5% The filler metal may be used in the form of a solid or cored wire electrode for gas-shielded welding, or in the form of wire or strip for submerged arc and electro-slag welding or in pulsed arc gas-shielded welding using mixtures of argon and carbon dioxide or argon, carbon dioxide and oxygen.
Patent GB-1476936-A (GB)
Title: Cellular plastic foam
IPC: B32B5/18
Filed: 1974-06-13
Abstract: 1476936 Coated polyurethane foam IMPERIAL CHEMICAL INDUSTRIES Ltd 13 June 1974 [6 July 1973] 32259/74 Heading B2E At least the main surfaces of a rigid or semi-rigid polyurethane foam which may be in the form of a laminate with at least one layer of paper, card, wood, veneer, plastics or metal, are coated with a nitroarylamine salt, e.g. an acid sulphate, preferably in the form of a lacquer in order to render the foam fire resistant. Preferred compounds are nitroanilines, a more preferred compound is p-nitroaniline. Other nitroarylamines include o and m-nitroaniline, 4-Cl-2-nitroaniline, 2-Cl-4-nitroaniline, 6-Cl-3-nitroaniline, 4-Br-2-nitroaniline, 2-Br-4-nitroaniline, 4-nitro-2-aminobenzene-sulphonic acid, 5-nitro-2-aminobenzenesulphonic acid, 3-nitro-2-aminophenol, 5-nitro-2- aminophenol, 3-nitro-4-aminophenol, 6-nitro- 2-aminophenol, 5-nitro-aminobenzoic acid, 2- nitro-2-aminobenzoic acid, 4-nitro-2-aminobenzoic acid, 3-4-and 5-nitro-o-toluidines, 3- nitro-4-anisidine, 5-nitro-o-anisidine, p-nitrom-phenylene diamine, nitrodiamino and nitropolyaminodiphenylmethanes, e.g. 2, 2'-dinitro- 4, 4'-diaminodiphenyl methane and crude nitro derivatives of mitures of methylene bridged polyarylamines and formaldehyde. The lacquer may be applied by brushing, roller application or spraying. Resins may be included in the lacquer.
Patent GB-352856-A (GB)
Title: Improvements relating to valve-seats for internal combustion engines
IPC: B21K1/24
Filed: 1930-10-28
Abstract: 352,856. Valve - seats. ANDREWS, H., of Andrews Grinding Co., Cheapside, Birmingham. Oct. 28, 1930, No. 32292. [Class 135.] Means for renewing valve seats of internalcombustion engines comprise a grooved seating ring e which is forced into a recess cut in the part b containing the original seat, and a split spring ring g which expands into a groove d to hold the ring e in place. A sleeve compresses the ring g during insertion.
Patent GB-161241-A (GB)
Title: Improvements in telephone receivers, transmitters and other electric or magnetic acoustic or vibratory apparatus
IPC: H04R7/22
Filed: 1919-12-29
Abstract: 161,241. Hockly, S. Dec. 29, 1919. Diaphragm vibrators.-In a telephone receiver, transmitter, or other electric or magnetic vibratory apparatus, a flanged diaphragm a, Fig. 1, of resilient material is supported on the edge of the casing b with the cylindrical flange projecting within the casing. Alternatively, the flanged diaphragm may be supported on a ridged block c, Fig. 3, placed within the casing b. In the latter construction, the flange may surround the ridge on the block c, or the diaphragm rim may be thickened and attached to the upper surface of the ridge.
Patent GB-326886-A (GB)
Abstract: 326,886. Garner, J. R., and Royston, J. H. Dec. 20, 1928. Divided on 326,562. Endless-chain conveyers with articles held by grips.-An endless-chain conveyer for tubes &c. comprises parallel chains 10 connected by bars 11 on each of which is mounted a series of carriers 16. Each carrier comprises two inclined arms of spring material forming a V-shaped grip in which the material to be conveyed is situated. A driving dog, Fig. 4, may be clamped to each length of material to engage with the carriers 16 if positive. Propulsion is desired. The dog is held in gripping position by the engagement of a spring or flattened ring 18 with its handles.
Patent GB-1317006-A (GB)
Title: Double replication process for producing ophthalmic lenses
IPC: G02B1/04
Filed: 1970-07-06
Abstract: 1317006 Casting ophthalmic lenses and moulds therefor J O BEATTIE LABORATORIES INC 6 July 1970 [15 July 1969] 32735/70 Heading B5A Ophthalmic lenses are produced by (i) casting a first resin against a glass negative; (ii) casting a second resin against the positive produced from (i); and (iii) casting an optically clear thermosetting plastic e.g. poly(diethylene glycol bis-allyl carbonate) against the negative from (ii). The first resin may be a copolymer of 70% acrylonitrile and 30% methyl methacrylate, preferably crosslinked with 5-30% glycol dimethacrylate. The second resin may be a copolymer of (a) 96-50% methyl methacrylate with 4-50% of glycol dimethacrylate, divinylbenzene or acrylonitrile, (b) 96-50% styrene with 4-50% glycol dimethacrylate or divinylbenzene or (c) 10-90% styrene with 90-10% acrylonitrile crosslinked with 5-50% glycol dimethacrylate or divinylbenzene. A flexible membrane is preferably used in stages (i) and (ii) to accommodate shrinkage of the resin, the casting in these stages preferably being effected at a pressure of 50 lb/in<SP>2</SP>. The lens may have a raised focal segment portion.
Patent GB-377872-A (GB)
Title: Improvements in or relating to multi-cylinder two-stroke internal combustion engines
IPC: F02B25/00
Filed: 1931-11-26
Abstract: 377,872. Two-stroke engines. ALLGEMEINE ELEKTRICIT€TS-GES., 2, Friedrich Karl-Ufer, Berlin. Nov. 26, 1931, No. 32803. Convention date, Jan. 17. [Class 7 (ii).] In a multicylinder engine supplied with scavenging air r from one piston pump through a duct c common to. all the cylinders, the supply to all the cylinders is arranged to take place at the same pressure despite variations of pressure in the duct c. Throttle valves e, g may be placed in either or both the inlet and exhaust pipes d, f to each cylinder or one or more cylinders may have smaller inlet and/or exhaust ports than the others.
Patent GB-534794-A (GB)
Title: Separable slide fasteners
IPC: A44B19/38
Filed: 1939-12-23
Abstract: 534,794. Sliding-clasp fasteners. PLASCO, Ltd. Dec. 23, 1939, No. 32833. Convention date, Feb 23. [Class 44] In a separable slide fastener, the bottom stop 7 is fixed to one of the stringers and has openings 8, 9 through which the stringers 1, 2 extend for a substantial distance, and lateral slots 15 in line with the openings 8, 9 for receiving pins 16, 19 on the stringers, said pins resting on shoulders 10 adjacent the openings 8, 9. The ends of the stringer tapes may be folded at 11, 13 and fixed at 12, 14.
Patent GB-913795-A (GB)
Title: Production of akyllbenzenes
Inventor: MCLEAN ANDREW
IPC: C07C2/10
Filed: 1960-09-23
Abstract: Alkylbenzenes are obtained by condensing with benzene, in the presence of an alkylation catalyst, a copolymer fraction boiling in the C9-C18 range obtained by copolymerizing any two or all of ethylene, propylene and n-butylene in the presence of a transition metal oxide.  Propylene is preferably present in the polymerization feed in amounts of 50-90% mol and ethylene in amounts of not more than 35%.  Alkanes may be present but isobutene should be absent. Suitable catalysts are oxides of nickel, cobalt and manganese which may be supported on silica, silica gel or silica-alumina, and polymerization is effected at 20-150 DEG C. under sufficient pressure to maintain the liquid phase. The product is fractionated and low boiling material recycled. Alkylation may be effected at -20 to 50 DEG C. in the presence of anhydrous hydrogen fluoride, and the alkylate fractionated into light, detergent and heavy alkylate fractions.
Patent GB-205383-A (GB)
Title: Boat lowering means
IPC: B63B23/04
Filed: 1922-12-01
Abstract: 205,383. King, G. Dec. 1, 1922. Boat-lowering gear.-In boat-lowering gear in which duplex falls are employed at each end of the boat, one fall f runs outward over pulleys d, e on a horizontally-sliding girder-davit b with turned-up end. The second fall j runs over a fixed pulley k and is attached to the boat together with the fall f. A feature of the invention is that the falls f, j are wound on separate winch drums h, l. The davit b telescopes in a fixed girder a which serves as a deck-supporting girder.