baber/WOPTO huggingface dataset:
Patent GB-597825-A (GB)
Title: Improvements in or relating to the production of penicillin salts
IPC: C07D499/16
Filed: 1945-05-03
Abstract: Substantially pure, crystalline salts of penicillin, having a penicillin activity of about 1600 units per mg., are obtained by crystallizing a partially purified preparation of penicillin of relatively high penicillin-activity in the presence of a water-soluble neutral salt of an alkali or alkaline-earth metal (including magnesium) or of ammonium, separating the crystals, and recrystallizing from an organic solvent.  The first step is preferably effected by dissolving the partially - purified preparation of penicillin (which should preferably have a minimum activity of about 1000 units per mg.) in a solvent, e.g. water, to form a concentrated solution, treating such solution with the salt or a saturated solution thereof to produce a turbidity, and allowing the turbid solution to crystallise, this operation being preferably effected at pH 5.5-7.0.  Specified salts are disodium, diammonium and magnesium sulphates, ammonium, sodium, potassium, lithium, strontium, magnesium, calcium and barium chlorides and trisodium citrate.  The recrystallization may be effected by dissolving the crystals in the organic solvent, adding an organic liquid of less solvent power to produce a turbidity, and allowing crystallization.  The temperature, during processing, should preferably not exceed 20-25 DEG  C., and, in the crystallization phase, about 0 DEG  C.  In an example: dried calcium penicillin, dissolved in water, is treated with 3 per cent sodium phosphate buffer solution saturated with ammonium sulphate and of pH 6.8, followed by solid ammonium sulphate, and, after standing overnight at 0 DEG  C., the crystals are separated and dissolved in anhydrous acetone, and the solution, after filtration, treated with anhydrous ether to effect separation of the substantially-pure ammonium salt.
Patent GB-704173-A (GB)
Title: Improvements in or relating to traverse or builder mechanisms in textile winding machines
Inventor: SMITH FREDERICK ARTHUR
IPC: D01H1/36
Filed: 1951-05-15
Abstract: 704,173. Builder mechanisms. BRITISH NYLON SPINNERS, Ltd. May 15, 1952 [May 15, 1951], No. 11255/51. Class 120(2) A traverse or builder mechanism for a textile winding machine comprises a cam with a sinuous track upon its surface for the cam follower such that the third differential of the displacement of the load with respect to time is finite. The cam may be cylindrical or a disc and the track such that upon development it comprises portions of sine curves with straight lines between consecutive points of inflection, or sine curves or cosine curves. Tables are given to define the shape of various cam tracks.
Patent GB-557945-A (GB)
Title: Improvements in electric switch gear having air-break isolating switches
IPC: H01H31/00
Filed: 1942-08-12
Abstract: 557,945. Air-break switches. FLURSCHEIM, C. H., and METROPOLITAN VICKERS ELECTRICAL CO., Ltd. Aug. 12, 1942, No. 11306. [Class 38 (v)] A switchgear structure comprising a main circuit interrupter and an air-break isolator in series with it is adapted for outdoor use by providing, in addition to the normal actuating mechanism, fluid-pressure actuating means for imparting an initial ice-breaking action to the isolator contacts. For example, blast-fluid may be diverted from the blast-supply pipe of the main circuit-breaker, to a piston mounted on the fixed structure and acting either on the fixed contact of the isolator, Fig. 1 (not shown), or on the movable isolator-blade, Fig. 2 (not shown), the blade being mounted on a rotatable insulator and movable in a horizontal plane. In another arrangement, operating fluid is passed through the blade to a piston carried in the contact-end thereof and operating on a lever which acts upon part of the fixed contact, Fig. 4 (not shown). In Fig. 3, the blade 25b is rotatable about a horizontal axis in a support 26 on the circuit-breaker 21 by means of a fluid motor 25d .. f. Fluid from blast-pipe 22a passes through pipe 26b and the blade-interior to a piston 29 adapted to rotate contact 25 on its carrying-arm 25a by means of a link 29a pivoted to the piston-rod. In Figs. 5, 6, the blade 45a is horizontally pivoted in arm 46 and operated through bevel gearing 45c, d by rotatable insulator 45e. The contact proper 45 is of the section shown in full lines in Fig. 6, and cooperates with the fixed switch jaws 43, but is deformable into the dotted cross-section shown in Fig. 6, by fluid-pressure admitted through pipe 41d only when the movable main contact 41b has operated.
Patent GB-1107712-A (GB)
Title: Improvements in or relating to knitted articles of hose
IPC: D04B9/46
Filed: 1964-03-17
Abstract: A tubularly knitted article of hose incorporates a rotary knitted toe comprising a succession of part courses extending across the top centre line of the foot and increasing progressively in length towards the toe tip.  The toe is closed by a join extending under the centre of the foot.  The toe and sole may be reinforced by splicing or using a thicker yarn; the toe yarn may be of thermoplastic material.ALSO:A tubularly knitted article of hose incorporates a rotary knitted toe comprising a succession of part courses extending across the top centre line of the foot and increasing progressively in length towards the toe tip.  The float yarns inside the toe may either be cut during fabrication or subsequently; and the toe is closed by a join extending under the centre of the foot.  A complete course or courses may be interposed between successive part courses or groups of part courses.  The toe and sole may be reinforced by splicing or using a thicker yarn; the toe yarn may be of thermoplastic material.
Patent GB-1142974-A (GB)
Title: Pigments
Inventor: LEDERER GERALD
IPC: C09C1/36
Filed: 1967-03-10
Abstract: 1,142,974. TiO 2  coated with silica and alumina. BRITISH TITAN PRODUCTS CO. Ltd. 29 Jan., 1968 [10 March, 1967], No. 11379/67. Heading C1A. [Also in Division C3] Pigmentary TiO 2  is coated with hydrous oxides of Si and Al, the coating containing 60-90 mole per cent SiO 2  and 40-10 mole per cent Al 2 O 3 , and the amount of SiO 2  being 9-15% by wt. of the uncoated TiO 2 . The coating may be formed by adding Na silicate and Na aluminate, mixed or separately, as solutions or as solids, to an aqueous dispersion of the TiO 2 . Alternatively, Al 2 (SO 4 ) 3  and NaOH may be added in either order to raise the pH to at least 10, and the silicate then added. The dispersion may then be stirred for at least 30 mins. at 40 C. and H 2 SO 4  added to reduce the pH to 4-6, then stirred for at least 30 mins. at 50 C., flocculated with up to 0À25% MgSO 4 , filtered, dried and fluid energy milled in the presence of pentaerithritol or triethanolamine. The TiO 2  may have a mean wt. particle size of 0À15-0À5Á and may be anatase or rutile. preferably 90-99À5% by wt. rutile. Some of the TiO 2  may be acicular having a length/ width ratio up to 8À1, which may be obtained either (a) by adding to sulphate process TiO 2  0À5-2% (as Na 2 O) of Na 2 SO 4 , Na 2 CO 3 , or NaOH and optionally up to 0À5% Al 2 O 3 , a silicate, and NH 4 H 2 PO 4 , and calcining at 850- 950 C., or (b) by seeding a TiCl 4  solution with a TiO 2  sol, heating to form TiO 2 , and calcining at 700-900 C. Alternatively, the TiO 2  may be obtained by vapour phase oxidation of TiCl 4 . The TiO 2  may initially be sand-milled, in the presence of a dispersing agent, e.g. Na silicate, which forms part of the silicate reactant.
Patent GB-240888-A (GB)
Title: Improvements in and relating to the treatment of ores, concentrates and metallurgical products
IPC: C22B3/06
Filed: 1924-05-08
Abstract: Ores and metallurgical products containing sulphur in the form of sulphides are treated with a solution containing chromic acid so as to obtain sulphates such as copper, lead, zinc, and silver sulphates, some or all of the metal compounds being thus converted into sulphates.  The metals may be obtained by electrolysis, which may also regenerate the chromic acid for use again.  The chromic acid may be obtained in the first instance by electrolysis of a solution of potassium or sodium chrome alum.  Iron may be removed from the solution for instance by lime, and if an excess of sulphuric acid accumulates, some may be removed by means of calcium carbonate.  When copper is the metal to be obtained it may be precipitated from the solution by scrap iron, the residual solution being then freed from the bulk of the iron without removing the chromium and regenerated by electrolysis or otherwise.  The electrolysis may be effected in a diaphragm cell, the solution being first fed to the cathode compartment from which after deposition of the bulk of the metal content, it is passed to the anode compartment for the oxidation of the chromium. Alternatively, the chromium may be recovered by precipitation and a known furnace treatment.  In some cases the sulphide ores may be submitted to a light roast to remove part of the sulphur or convert a part of the sulphur into sulphates.  Some sulphides are made more amenable to extraction by the heating owing to some change in their physical form.
Patent GB-251652-A (GB)
Title: Improvements in or relating to the treatment of gases produced in cracking hydrocarbons
IPC: C07C7/00
Filed: 1926-04-30
Abstract: 251,652. Soc. Anon. d'Explosifs et de Produits Chimiques, (Assignees of Blanchet, L.). May 1, 1925, [Convention date]. Ethylene and propylene chlorhydrins; chlorparaffins; propyl hydrogen sulphate; ethylene and propylene glycols; alkyl acetates and alcohols.-The gases produced in cracking hydrocarbons are separated into fractions by liquefaction and each fraction, and also the unliquefied residue, is treated for the production of derivatives. The crude gases are subjected to successively increasing pressures and successively decreasing temperatures to separate in turn pentanes and amylenes, butanes and butylenes, and propane and propylene, and the unliquefied gases are treated with hypochlorous acid to remove ethylene and then with chlorine to convert the residual paraffins into monochlor derivatives. Alternatively, propylene may be absorbed in cold sulphuric acid or, together with ethylene, in hypochlorous acid. The pentane-amylene fraction is treated in turn with hydrochloric acid and with chlorine to form amyl chlorides, which may be treated with sodium acetate to convert them into acetates or may be hydrolysed to yield alcohols. The butane-butylene fraction and the propane-propylene fraction, if obtained are similarly treated. When the propylene is absorbed in sulphuric acid, the product is hydrolyzed to yield propyl alcohols, and when the propylene and ethylene are absorbed together in hypochlorous acid the monochlorhydrins may be separated by fractional distillation in vacuo or may be hydrolyzed to yield a mixture of glycols. The moriochlor derivatives of the residual paraffins, which comprise methane, ethane, and, it may be, propane, may be converted into the corresponding acetates or alcohols.
Patent GB-363590-A (GB)
Title: Shearing and chamfering machine
IPC: B23D19/08
Filed: 1931-04-17
Abstract: 363,590. Shearing. FOUQUET, E., 112, Rue Jean JaurÞs, Bois-Colombes, Seine, and NAGEOTTE, C., 56, Rue du Rendez- Vous, Paris, both in France. April 17, 1931, No. 11431. Convention date, May 16, 1930. [Class 83 (iv).] Shear-blades.-In a combined shearing and bevelling machine, rotary cutters 23, 26 co-operate to effect shearing and cutters 18, 21 effect the bevelling. A wedge-shaped frame I is arranged as in Specification 272,901, [Class 83 (iv), Metals, Working], and carries stub-shafts 2, 7 secured to a framing 10. The shaft 2 is mounted in an eccentric bush 3 adjustable to compensate for wear. The cutters 18, 26 are integral and mounted on a sleeve 11 rotated from a power shaft 15. The cutter 21 is mounted on a shaft 20 geared to the sleeve 11. The cutters 23, 26 rotate in opposite directions to the cutters 18, 21 allowing a sheet T after shearing to be reversed and fed back through the bevelling cutters.
Patent GB-352509-A (GB)
Title: Improvements in or relating to electric upsetting and forging
Filed: 1930-04-10
Abstract: The anvil plate of a machine for upsetting the ends of metal bars heated electrically is formed of an alloy of copper and tungsten, the copper preferably being in greater proportion, and the tungsten about 30 per cent.
Patent GB-817288-A (GB)
Title: Improvements in or relating to can openers
IPC: B67B7/50
Filed: 1956-04-16
Abstract: 817,288. Can openers ; crown cork openers. NAGY, J., and JAMES, W. April 6, 1956 No. 11535/56. Classes 66 and 125(2). A piercing tool for forming dispensing and air vent openings in a can top, compirses a body 10 formed from a single sheet of metal and incorporating a body portion 14 serving as a handle, a head portion 22 at one end of the body portion 14 having an air vent forming prong 32, and a main dispensing opening prong 26 struck out of the material of the head portion. Extending from the head portion 22 is an enlarged lever 31 that can be pressed by the thumb of a hand grasping the handle 14 to drive the prongs 26, 32, through the can top, a beadengaging prong 30 being used as a fulcrum. The tool may be formed with strengthening ribs. The other end of the body portion 14 is shaped as at 16 and 18 for removing bottle caps of the crown type.
Patent GB-432627-A (GB)
Title: Improvements relating to electric lamp holders and other electric fittings
IPC: H01R33/46
Filed: 1935-04-15
Abstract: 432,627. Binding - posts ; couplings. KLOPFER, H., 31, Rue Seutin, Brussels. April 15, 1935, No. 11549. [Class 38 (i)] Connection between the supply wires 1, 2 and the terminals 11, 12 of a lamp holder or other electric fitting is made by means of a turntable member 8 carrying the terminals and studs 15, 16 connected thereto, which are arranged to be pressed by a spring 10 against the ends of the wires 1, 2 that are located in channels 5, 6 in the part 7 of the body. The member 8 when drawn back against the spring 10 can be turned about the pivot 9 and when in the position to grip the wires, it is located by projecting rims 17 and secured by a flange 23 on the sleeve 20 that is held by a screw cap 4 or by a screw ring surrounding the sleeve and screwing on to the body.
Patent GB-841945-A (GB)
Title: Improvements in and relating to processes for the production of filter material and to filter material produced by such processes
Inventor: BAUMANN LAWRENCE LEE
IPC: B01D39/18
Filed: 1956-04-16
Abstract: Cellulose fibres from decorticated plant leaves and/or husks and/or stalks, e.g. abaca, coir, flax, manila hemp, henequen, jute, kenaf, ramie, sisal or sunn, are partially disintegrated into their component fibrils by a chemical treatment such as bleaching, e.g. with an optical bleach, and/or dyeing, and after drying, are subjected to a mechanical beating treatment which curls the fibres and further or wholly disintegrates them into fibrils prior to their formation into a filter rod.  Prior to chemical and/or mechanical treatment the fibres may be combed and/or beaten to partially longitudinally split them, e.g. they may be teased between spiked cylinders.  One or more cutting operations may be performed on the fibres prior to chemical and/or mechanical treatment, e.g. for a cigarette filter rod the fibres may be initially cut to a length of one to six inches.  The chemical treatment may be such as to reduce the fibres to from 60% to 95% of their original weight. Machine-dried sisal may be chemically treated by boiling in caustic soda followed by boiling in acidified sodium chlorite and machine or natural drying.  The mechanical treatment may be effected by rotating hammers from which the fibres are passed by an air stream through perforated screens, fibre "dust" then being removed by sieving if required.  Filter rod formation may be effected by wrapping a layer of fibres with cigarette paper as it passes on a conveyer through a garniture.  The rod fibres and/or fibrils may be bonded together, and possibly to the wrapper, by thermosetting and/or thermoplastic materials. Powdered polythene may be added before rod formation, the formed rod being heated to flux the polythene and cooled.  A solution or emulsion of bonding agent may be used, e.g. the fibres may be immersed in or sprayed with polystyrene before rod formation, the formed rod being heated to remove liquid.  A wrapper may be dispensed with if a bonding agent is used.  Compression of a fibre mass from which a rod is to be formed, before or after addition of bonding agent, or compression of the formed rod before completion of the bonding action, may be effected.  Alternatively, the fibre mass may be mechanically expanded prior to rod formation.  The Registered Trade Mark "Tinopal" is referred to.
Patent GB-559249-A (GB)
Title: Low voltage safety electric soldering iron of midget size
IPC: B23K3/03
Filed: 1942-08-19
Abstract: 559,249. Electric soldering-irons. BULLER, A. C. G., and TORRY, H. S. KENDALL-. Aug 19. 1942, No. 11654. [Class 39 iii)] [Also in Group XXII] An electric soldering-iron for small work comprises a steel strip b, c, d, of Z-shape, with a wooden handle a secured to one end b, and the bit t with its heater secured to the other end d in a position at right angles to the handle and parallel to the part c of the steel strip. A threaded steel core e is secured to the part d, and in its central portion is surrounded by a glass or refractory tube h, retained between collars f, f. Resistance wire j is wound around the tube h and is connected at the lower end to the core e, and at the upper end passes through an outer metal sleeve k, to an insulated terminal carried by the steel strip, and thence through the handle. A connection u to the steel strip also passes through the handle.
Patent GB-296458-A (GB)
Title: Intermediate compounds for the preparation of dyestuffs
IPC: C07C309/86
Filed: 1927-05-02
Abstract: 296,458. British Dyestuffs Corporation, Ltd., Payman, J. B., and Bainbridge, E. G. May 2, 1927. No Patent granted (Sealing fee not paid). Naphthol derivatives. - 1 : 8-Naphthasultone fulphonic acids are converted by means of phosphorus halides into the sulphon halides, which are treated with ammonia or a primary amine, substantially in the absence of water, to give 1. : 8-naphthasultone sulphonamides; these may be treated with alkalies to give 1-naphthol 8- sulphonic acid sulphonamides, or with ammonia solution to give di- or poly-sulphonamide derivatives of a-naphthol, in which the sulphonamide groups may be the same or different, and in which a primary sulphonamide group is in position 8. In examples, 1 : 8-naphthasultone-3-sulphonic acid is converted to the sulphonchloride by phosphorus pentachloride, and the 1 : 8- naphthasultone-3-sulphonamide and 3-sulphonanilide are prepared from it. From these latter the l-naphthol-3 : 8-disulphonamide, and the 1- naphthol-3-sulphonanilide 8-sulphonic acid and 8- sulphonamide are prepared. Phosphorus trichloride and pentabromide may be employed in place of the pentachloride.
Patent GB-490782-A (GB)
Title: A new or improved inking mechanism for printing machines
IPC: B41F31/08
Filed: 1937-04-26
Abstract: 490,782. Rotary pumps. HOE & CO., Ltd., R. (Hoe & Co., Inc., R.) April 26, 1937, No. 11946. [Class 110 (ii)] [Also in Group XVI] In inking - mechanism for printing-machines comprising an inking-head provided with four independently pivoted sections having flared ink outlet orifices, ink is supplied to each outlet orifice by separate pipes from a pump system comprising four separate ink-feeding chambers 25, one for each inking- head section, and each containing a rotary pump, preferably intermeshing helical gears 23. The pumps are driven from the printing-press through a common driving-shaft 36 and individual worm gears 39 and clutches 48. Ink is supplied from a main pipe 22 through branch conduits 24 to each chamber 25, and is delivered from each chamber 25 through a port 31 to a chamber 30 having eight ports 73, one for each orifice pipe, with individual control values 75. Constant pressure is maintained in the chambers 30 by supplying surplus ink and bye-passing the surplus through a conduct 62 past a spring-pressed ball valve 64 with a screw adjustment 68, to return by a conduit 70 into the main pipe 22.
Patent GB-768534-A (GB)
Title: Method of testing coal for determining the ash content
IPC: G01N23/201
Filed: 1955-04-26
Abstract: 768,534. X-ray analyses. STAMICARBON N.V. April 26, 1955 [May 7, 1954], No. 12042/55. Class 40 (3). In a method of determining the ash content of coal the dispersion capacity for Roentgen rays of greater than 1.74 Š.U. and less than 4.5 Š is measured. The dispersion may be measured by a single photo-electric device responding to the dispersed radiation if the incident rays have a constant intensity. If not, a second detector may be provided for the incident beam or the beam may be detected alternately by the same detector. If measurements are made on a continuous stream of the fluctuation the ash content may be used to control coal cleaning operation by change-absorption capacity between samples or by comparison of successive samples with a standard.
Patent GB-259263-A (GB)
Title: Improvements in devices for locking water taps to prevent theft or unauthorized removal
IPC: F16K51/00
Filed: 1925-05-08
Abstract: 259,263. Daroowalla, K. B. May 8, 1925. Joints; preventing tampering with.-A device for securing water taps against theft from their positions on supply pipes e, Fig. 2, comprises in one form, a bracket or clamp a having a collar b which fits over the end of the spout c and is secured on the opposite side of a wall or partition C by a clamp d on the pipe in conjunction with a link d<1> and a wall plate f. In an alternative form a two-armed bracket may be cast on the shank part of the tap, one arm being secured by a screw to the wall, and the other arm having a hinged part folded over on to a hasp fastening and secured by a padlock. In the arrangement shown in Fig. 4 if the tap is to be non-removable two bolts Z and a tenon V at the enlarged parts X, X<1> are provided. If, however, the tap is required to be removable these are omitted and a locking-plate Y with padlock are fitted. On removing the plate Y, the lower bar T can be withdrawn, whereupon the bracket a is removable.
Patent GB-822799-A (GB)
Title: Appliance for supporting infants during tending operations
IPC: A47D5/00
Filed: 1958-04-16
Abstract: 822,799. Cots &c. ECHARD, R. M. April 16, 1958 [May 31, 1957], No. 12076/58. Class 52(2) A device for supporting an infant during attention by nurse or mother comprises a moulded receptacle 1 with a part 4 to receive the seat of the infant and a head-rest 5, and a tubular support 2. Apertures 7 facilitate evacuation of urine into a container placed beneath. The frame and receptacle parts may be dissembled for storage &c.
Patent GB-1164932-A (GB)
Title: Improvements in Cutting Tools for Holding Cutting Inserts.
IPC: B23C5/22
Filed: 1967-03-15
Abstract: 1,164,932. Rotary cutting tools. VALERON CORP. 15 March, 1967 [12 May, 1966], No. 12105/67. Headings B3C and B3K. A rotary cutting tool, such as an end mill, comprises a holder 10, rotatable about a longitudinal axis and having at one end a plurality of circumferentially spaced axially extending recesses 16 located at the periphery of the holder in which are positioned cutting inserts 10, 18 with their cutting edges 26 extending beyond the periphery of the holder. A slot 20 is formed in the holder end and which intersects the recesses so that the tightening of a member e.g. a screw 22 transversely extending through the holder and across the slot retains the inserts in a preorientated position in the recesses. The inserts which are complementary with the recesses may be cylindrical or semi-cylindrical. The inserts are indexable within the recesses.