baber/WOPTO huggingface dataset:
Patent GB-793054-A (GB)
Title: Process of producing amorphous, finely-divided silica
IPC: C01B33/18
Filed: 1955-06-14
Abstract: Amorphous, finely-divided silica having a mean particle size within the range 5-50 mm  is produced by reacting in the gas phase a silicon fluoride, with a combustible gas and a gas containing free oxygen in a flame liberating from 0.1 X 10-5 to 1.3 X 105- B.T.U.-1 (i.e. volume of flame in cu. ft. for each B.T.U. evolved per minute in the flame) to form silica and hydrogen fluoride.  The flame intensity may be controlled in several ways, thus, silicon fluoride and the combustible gas may be mixed and introduced into the flame with oxygen, preferably with turbulence, the gases may be mixed thoroughly in the flame by introduction through a multiplicity of small jets, or the silicon fluoride, combustible gas and some or all the oxygen may be mixed and introduced through a multiplicity of fine jets.  All or part of the flame may be enclosed in heat-reflecting surfaces, e.g. ceramic or metal-surfaced brick. The burner may be one in which the gases are mixed and pass through a screen or perforated plate, since a number of small flames have more uniform intensity than one large one, or may be one with three concentric tubes where oxygen is supplied to the outermost and innermost tubes, and a mixture of silicon fluoride and combustible gas to the middle tube.  One or more of the gases may be preheated, and a considerable volume excess of combustible gas, and 10-75 per cent oxygen excess should be used. Silicon tetrafluoride is the preferred fluoride or compounds generating it in the vapour phase, e.g. hydrofluosilicic acid or the three silicon hydrofluorides, may be used.  The silicon tetrafluoride may be generated by heating fluorspar, sand, and sulphuric acid, or by vaporizing the hydrofluosilicic acid solution obtained by treating sand with aqueous hydrofluoric acid.  This latter reaction permits a cyclic process, wherein the hydrofluoric acid, generated in the reaction, is absorbed in water by cooling in a packed tower, or in aqueous fluosulphonic acid, or in solid sodium fluoride at below 300 DEG  C. to form complex sodium hydrofluoride which is decomposed at above 325 DEG  C., and recovered for reuse in treating fresh sand. Combustible gases containing available hydrogen may be hydrogen, producer gas, natural gas, commercial propane, or butane, benzene, water gas, kerosene, methane, ethane, naphthenes, and gasoline.  If hydrogen is supplied as a gas containing available hydrogen, e.g. as hydrogen fluoride and water from hydrofluoric acid treatment of sand, then the combustible gas may be carbon monoxide and is preferred. The gas containing oxygen may be air, oxygen-enriched air, oxygen, or oxygen with inert gas, e.g. nitrogen or carbon monoxide.  The silica may be separated on ceramic or bag filters, and may be used as a reinforcing agent for rubber or synthetic resins, e.g. silicone resins, or as a pigment.  Specifications 258,313, [Class 1 (ii)], 438,782, 647,311, 675,341 and 728,095 are referred to.
Patent GB-1212883-A (GB)
Title: Improvements in or relating to ink compositions
IPC: C09D11/16
Filed: 1968-04-09
Abstract: 1,212,883. Ink compositions for flow pens. PAPER MATE MFG. CO. 9 April, 1968 [13 April, 1967], No. 17101/68. Heading C4A. Ink compositions for writing instruments with a porous tip comprise water, a colorant, and one or more water-soluble surfactants at least one of which has anti-static properties, the ink having a surface tension not exceeding 37 dynes/ cm., preferably 31-37 dynes/cm. A single surfactant, which constitutes 0À1-3% by weight of the ink, may be (i) a non-ionic ester of a fatty acid and a polyalkenoxylated polyol, e.g. polyoxyethylene etherified fatty acid ester of anhydrosorbitol, polyethylene glycol laurate, or polyoxyethylene sorbitan monolaurate; (ii) an ampholytic alkylamino carboxylic acid where R<SP>1</SP> and R<SP>2</SP> are C 8 -C 24  alkyl and C 1 -C 8  alkyl respectively; (iii) a cationic amide-linked quaternary amine where R<SP>3</SP> is C 7 -C 24  alkyl, R<SP>4</SP> is C 1 -C 6  alkyl, and R<SP>5</SP>, R<SP>6</SP>, R<SP>7</SP> are each C 1 -C 6  alkyl or hydroxy C 1 -C 6 ' alkyl, and X is a mineral acid residue, e.g. stearamido - propyl - dimethyl -# - hydroxyethyl-ammonium nitrate or dihydrogen phosphate; (iv) a non-ionic polyoxyethylene alkylamine R<SP>8</SP>NH(R<SP>9</SP>O) Z H, where R<SP>8</SP>, R<SP>9</SP> are C 1 -C 6  alkyl and C 2 -C 4  alkyl respectively, z is 10-40; (v) a cationic quaternary ammonium compound [R<SP>10</SP>Nabc]<SP>+</SP>X-, where R<SP>10</SP> is C 7 -C 2o  alkyl, a, b and c are each C 1 -C 6  alkyl, and X is an anion; (iv) an anionic partial phosphate ester of a C 8 -C 24  alkanol, or an anionic ether-linked diaromatic having a long chain aliphatic group and one or two sulphonate groups, e.g. dodecyldiphenyl oxide sodium disulphonate. Alternatively, two surfactants, one having the requisite surface tension reducing property and the other the anti-static property, can be used in combination, e.g. isooctyl phenyl polyethoxy ethanol + a polyoxyethylene alkylamine. In examples the ink to which the surfactant(s) is (are) added consists of 8 p.b.w. anthraquinone blue 3G, 8 p.b.w. ethylene glycol, 0À2 p.b.w. methyl p-hydroxybenzoate (fungicide) and 93À3 p.b.w. water.
Patent GB-256753-A (GB)
Title: Improvements in or relating to a method and apparatus for the manufacture of pipes, rings and the like of concrete and the like
IPC: B28B21/12
Filed: 1925-07-03
Abstract: 256,753. Salway, A. D., (Doran, W. E.). July 3, 1925. Moulding pipes etc.; centrifugal machines; shaking and jigging machines.-A machine for moulding concrete &c. pipes &c. comprises a divided mould with a core, a hopper shaking means for consolidating the material passing from the hopper to the mould, and centrifugal means for compressing the material against the wall of the mould. A vertical shaft 1 carries a table 9 on which is mounted a divided mould 29, the parts of the mould being connected by clips 31 and secured to the table by clamping devices 41, Fig. 4. The mould is provided with liners 35, a detachable hopper 43 for the concrete &c. and a core 46 slidable on the shaft 1. The table normally rests on supports 28 and has a central boss 27 co-operating with the forked end of a pivoted lever 18. By means of toggle linkage 16 actuated by a piston and cylinder lost motion connection 24 to a rotating crank 20, the table and mould are given a jigging movement to consolidate the material in the mould. By releasing pawls 51 a ring 52 carrying a tubular member 57 falls into the flared upper end of the mould and any surplus concrete is retained between the member 57 and the hopper 43. The hopper 43, Fig. 7, and member 57 are then raised carrying away the surplus concrete. By means of a hand wheel operated toggle linkage 3 acting on the bottom end of the shaft 1, the table can be raised so that the mould can be rotated by a pulley driven roller 11 acting on a friction disc 10 on the shaft, to compress the material against the sides of the mould. The ring 52 and core are then raised. The inner surface of the casting may be smoothed by further rotation or other means and the outer form and casting are then removed to the stacking ground. A modified jigging appliance comprises a fluid pressure operated piston actuating a rocking lever, the fluid supply being controlled by a quick action valve to increase the jolting effect.
Patent GB-241290-A (GB)
Title: Improvements in or relating to rotary ovens for heating and drying granular materials
IPC: F26B11/04
Filed: 1924-07-17
Abstract: 241,290. Johnston, J. M. T. July 17, 1924. Continuous discharge apparatus, rotary; gases, controlling circulation of; heating-fittings. - Apparatus for drying granular materials, of the kind described in Specification 223,042, in which an oven is suspended within a casing by chains, cables or bands which extend around the oven and are driven by wheels situated above the oven, is provided with partitions which serve to protect the suspending and driving means from the hot gases. The ends of the rotary oven a are spaced from the ends of the casing b and carry arms f fixed to, or integral with, driving rings or hoops g around which pass the chains h which extend through slots h<1> in the casing and are driven by sprockets i on a shaft j. A feed shoot k passes through the left hand ring g and carries a circular partition l coplanar with an annular partition m fixed to the casing b, the arms f rotating in the annular space between these partitions. Corresponding partitions l<1> m<1> are arranged adjacent the discharge shoot n. Each end of the oven is provided with an apertured baffle plate p and the casing is divided into two parts by a transverse partition e, which may be provided with a floating baffle ring as described in Specification 244,975, the two parts of the casing having a fire-box c, d, but only the left-hand part being in connection with the uptake o. The hot gases from the fire-box c pass outside the oven a to the uptake, while the hot gases from the fire-box d pass into the oven at the discharge end and emerge at the charging end, the partitions l, m, l<1>, m<1> preventing direct contact of the gases with the chains h. The partitions may be secured to the arms f to rotate with the oven, the shoots k, n passing through central apertures in the partitions. Specification 241,281 also is referred to.
Patent GB-202460-A (GB)
Title: Improvements in the construction of internal combustion engine cylinders
IPC: F02F1/10
Filed: 1922-06-22
Abstract: 202,460. Mason, V. B. Harley-. June 22, 1922. Cylinders, cooling.-The cylinder wall is made too thin to withstand the bursting stresses at the combustion zone 1 and thicker at other parts 3, 4; it is supported by longitudinal or spiral ribs 2 with the addition if necessary of a belt surrounding the ribs. The ribs may extend to both sides of the combustion zone in cylinders with two pistons. The ribs may be united to the parts 1 and 4 only. Specification 1750/12 is referred to.
Patent GB-380445-A (GB)
Title: Improvements in and relating to receivers for radio telephony and telegraphy
IPC: H03G3/22
Filed: 1931-06-13
Abstract: 380,445. Valve amplifying circuits. MACKENZIE, W. B. and ALDER, L. S. B., H.M. Signal School, Royal Naval Barracks, Portsmouth. June 13, 1931, No. 17238. [Class 40 (v).] The anode-cathode circuit of the detector valve 2 is branched by a neon lamp 7 in series with a biasing resistance 8 for the grid of the previous screen-grid amplifier 1. The potential across the neon lamp is adjusted to exceed the striking point. Increase in signal strength then automatically increases the negative potential applied to the grid of the amplifier 1 from the tapping point 10, and so maintains a constant output. The limiting action serves to prevent overloading by extraneous interference, and also shortens the duration of atmospherics and disturbances. Specification 283,120, [Class 40 (v), Wireless signalling &c.], is referred to.
Patent GB-288859-A (GB)
Title: Improvements in and connected with electrically heated soldering irons
IPC: B23K3/03
Filed: 1927-06-29
Abstract: 288,859. Purefoy, J. Bagwell-, and Raby, G. W. June 29, 1927. Soldering-irons. - In an electric soldering- iron a resistance coiled on a former of insulating material with flanged ends s is cemented in a cavity in the bit which is mounted in and thermally insulated from a holder connected d to the handle. The wire c is coiled on a flanged insulating former d covered with cement and then cemented in a hollow bit a. The ends of the resistances pass through the former and are connected to flex e passing through the handle stem f. The bit is separated by insulation h from and secured, in an adapter g fixed to the handle stem. The adapter is split and the bit secured therein by a clamp i. The adapter may be screwed on the stem or may be split and secured thereon by a clamp. The handle and adapter may be in one piece. In Fig. 3, the bit containing the resistance is secured in and insulated from a clamp m connected to the handle stem l by a link o and bolts n, p so that it is angularly adjustable. Specifications 7812/01, 3696/03, 136,406, and 243,928 are referred to.
Patent GB-1237174-A (GB)
Title: Electric cable joints
Inventor: HIBBS DAVID ARTHUR
IPC: H02G15/14
Filed: 1969-04-02
Abstract: 1,237,174. Cable joints. STANDARD TELEPHONES & CABLES Ltd. 2 April, 1969, No. 17320/69. Heading H2E. In a method of jointing a submarine coaxial cable to a repeater tail cable, the aluminium outer conductor 2, of the submarine cable is welded near the cable end to an aluminium braid sheath 9, the sheath 9 being joined to the copper braid outer conductor 14 of the repeater tail cable by means of a fitting, comprising a grooved and castellated copper alloy sleeve 6 welded to an aluminium alloy endpiece 7 to which is welded the other end of the braid sheath 9, the outer conductor 14 being joined to the castellated sleeve 6. In the preferred method, a tube 18 is slipped on to the free end of the cable and sections of outer sheath 1, outer conductor 2, inner insulation 3, and inner conductor 4 are removed, the portion of outer sheath 1 being retained. The insulation 3 is shaped at the free end. The fitting is formed by welding an Al/Mg endpiece 7 to a castellated Cu/Ni/Si, sleeve 6 having a Be/Cu, lining 8. The Al/Mg braid sheath 9 is then welded to the endpiece 7. This assembly is then placed over the cable together with a packing piece 11 and the braid sheath 9 is welded to the outer conductor 2. The retained portion of the outer sheath 1 is shortened and replaced over the braid sheath as la, the tube 18 is pushed into position and sealed to outer sheath 1 by a moulded joint 19. The inner conductor 12 of the repeater tail cable is joined to the inner conductor 4 of the submarine cable by means of ferrule 13. Dielectric is moulded around the ferrule 13 and sleeve 6 filling spaces 15, 17, and a double braid copper covering 20 placed over the dielectric and welded to the outer conductor 14 and castellated sleeve 6. A securing plastics tape is tightly wrapped around the joint from the tube 18 to the outer sheath of the repeater tail cable (not shown). The joint may be armoured in a known manner.
Patent GB-666190-A (GB)
Title: Improvements in or relating to intermittent drive mechanism
IPC: F16H27/10
Filed: 1949-06-30
Abstract: 666,190. Toothed gearing. DA COSTA, H., and PLESSEY CO., Ltd. June 22, 1950 [June 30, 1949], No. 17333/49. Class 80 (i). The drive from a pinion 19 to a stepped toothed cam 1 is effected through an idler gear 11 carried on a spring-loaded lever 6. When the idler 11 rolls off a step of the toothed cam the lever 6 is pulled by the spring 12 to disengage the gear 11 from the driving pinion 19 to disconnect the drive and held by a catch 13 until the catch 13 is released by operation of a rod 15 either manually or automatically.
Patent GB-403576-A (GB)
Title: Improvements in and relating to coin holders or purses
IPC: A45C1/02
Filed: 1933-06-19
Abstract: 403,576. Purses. BRIGHAM, H. S., Kennebunk, Maine, U.S.A. June 19, 1933, No. 17432. [Class 133.] A coin-holder or purse consists of a lining strip 24 of flexible material bound by and attached by adhesive to a covering strip 25 and provided with snap fastener elements 17, 19 by the engagement of which two coin pockets 14, 18, are afforded, the part 11 sowing as a covering flap and being attachable to a fastener on the part 12. Resilient members 21, 22, 23 may be disposed between the lining and covering to enable the coins to be held more securely in the pockets. In place of employing separate covering and lining pieces the purse may be made from a single piece of material.
Patent GB-898578-A (GB)
Title: A parallel-line high-frequency voltage divider
IPC: G01R27/26
Filed: 1959-05-22
Abstract: 898,578. High-frequency voltage dividers. TESLA, NARODNI PODNIK. May 22, 1959 [June 16, 1958], No. 17510/59. Class 37. In a high-frequency voltage divider, a highfrequency generator 4 feeds a non-symmetrical line 3 which is short-circuited at one end; an output branch U2 being provided close to the short-circuited end; and an input branch U1 being provided at distance less than #/4 from the short-circuited end, to which branch a diode voltmeter is connected; the arrangement being characterized in that the resonant frequency f0 of the circuit constituted by the inductance 8 of the voltmeter connections and by the diode capacity Cd is adjusted by the addition of a capacitor 7 across the diode, whereby the dividing ratio of the divider is independent of the working frequency. The frequency f0 is adjusted by varying capacitor 7 so that the relationship is satisfied; l1 being the distance of the output branch from the short-circuited end; A being the wavelength on the line corresponding to the maximum working frequency f.
Patent GB-832644-A (GB)
Title: Improvements in and relating to hand shears and like cutting implements
IPC: A01G3/02
Filed: 1957-06-03
Abstract: 832,644. Pruning &c. shears. BROOKE, N. May 16, 1958 [June 3, 1957], No. 17598/57. Class 30 [Also in Group XXV] Each blade of pruning &c. shears comprises a cutter 1, 1a and a support 2, 2a the cutters and support being made of thin sheet metal having mating longitudinal stiffening channels, and being secured together by nuts and screws 8, 7. Stiffening pieces 3, 3a also have a mating channel and are secured by the nuts to extend from the pivot to an intermediate point along the support. Depressions 13, 14, 15 in the cutters, supports and stiffeners receive a ball 12 through which a pivot bolt 4 passes, the blades being rocked on the pivot, to maintain cutting co-operation between the blades, by resilient pressure of a corrugated extension 17 of the cutter 1a on a flat extension 16 of the cutter 1. The supports and stiffeners of each blade are secured to tubular handles 19 into which extension handles can be fitted.
Patent GB-255470-A (GB)
Title: Improvements in or relating to artificial teeth
IPC: A61C13/00
Filed: 1926-07-14
Abstract: 255,470. Kriegler, F. July 14, 1925, [Convention date]. Teeth, artificial.-Teeth of the kind having two pins formed with heads are secured to vulcanite or metal dentures by means of metal backing- plates having slots, through enlarged parts of which the heads of the pins are passed and then locked in position by sliding the teeth with their faces towards narrower ends of the slots. For metal dentures the backing-plate 3, Figs. 1 and 3, is formed with keyhole slots 4 to receive pins 2 on the tooth 1, Fig. 5. The enlarged parts 6 of the slots are arranged towards the incisal ends of the plates so that biting pressure tends to force the heads 7 of the pins 2 towards the narrow ends of the slots. A casing 8 is arranged behind the slots to prevent access of metal when casting the denture and to receive cement for securing the pins in position. For vulcanite work the casing 8 is omitted and the plate 3, Figs. 8, 9 and 12, is formed with one or more notched or plain extensions 9 which become embedded in the vulcanite. The pins and slots may be arranged side by side, as in Figs. 1 and 12, or longitudinally, as in Figs. 8 and 9. Flanges 3<a> on the plate 3, Fig. 9, may be provided to fit under the lip of a lower incisor. Broken teeth are replaced by drilling out the cement or vulcanite from the slots and securing new teeth in place by cement.
Patent GB-348914-A (GB)
Title: Apparatus for heating industrial rooms
IPC: F28D1/02
Filed: 1930-06-07
Abstract: 348,914. Ventilating- systems. FAVIER, F., Phalempin, Nord, France. June 7, 1930, No. 17729. Convention date, June 7, 1929. [Class 137.] Air for ventilating rooms is drawn by a fan S through two or more concentric rows of vertical ribbed tubes A, B through which steam or hot water is circulated, the tubes being connected to upper and lower headers C, D joined outside the apparatus to a steam or water supply pipe K and a discharge pipe K<1> respectively. The top of the tubes is closed by a plate L, and the bottom by a plate M having a central aperture N through which the air is drawn into the fans mounted below the aperture. The blades of the fan are arranged around the inside of a conical directing plate T and are supported by plates V secured to the spindle of an electric motor Y. Air may be drawn in from outside a room through a casing surrounding and spaced from the sides of the tubes. The condensate from the heating steam may be circulated through coiled pipes in the path of the air entering the apparatus.
Patent GB-1429094-A (GB)
Title: Antibiotic gp-3- and a process for the production thereof
IPC: A61K35/74
Filed: 1974-04-23
Abstract: 1429094 Antibiotic Gp-3 SHIONOGI & CO Ltd 23 April 1974 [25 April 1973] 17777/74 Heading C2A Antibiotic Gp-3 is a colourless amphoteric powder which shows no definite M.Pt. but progressively decomposes at over 190‹ C.; which contains C, H, N and O in the following proportions by weight: which has an optical rotation of [α]<SP>24À0</SP> D  + 19À8 Œ 2À3‹ (C=0À263% in dimethylformamide); which forms a dinitrophenyl derivative with a M.Wt. of about 1416 (measured by osmometry using pyridine); which forms aspartic acid, threonine, glycine, valine, allosoleucine, phenylalanine, tryptophan, γ-hydroxylysine, ammonia and a variety of fatty acids containing 11-17 carbon atoms upon acid hydrolysis; which has ultraviolet absorption bands (in methanol) at 275, 282 and 290 mÁ; which has a solubility as defined; which exhibits positive ninhydrin and Dragendorff colour reactions; which exhibits behaviour on thin layer chromatography as defined; and which has an infra-red absorption spectrum as shown in the accompanying drawing. The antibiotic may be prepared by cultivating a suitable strain of Bacillus cereus in an aqueous nutrient medium under aerobic conditions. A suitable strain is Bacillus cereus No. GP-3, ATCC No. 21928. Preferred cultivation conditions are a temperature of 20-37‹ C., submerged aerobic conditions, a nutrient medium pH of 7-8, and the optional presence of a buffering agent and an anti-foaming agent. The cultivation proceeds preferably for 20-100 hours, after which the antibiotic may be isolated by filtering the broth and extracting both cells and filtrate with a suitable solvent. There may be prepared from the antibiotic salts such as an acid addition salt, an ammonium salt or a pharmaceutically acceptable salt. The antibiotic may be formed into a pharmaceutical on disinfectant composition by admixture with a suitable diluent, carrier or excipient.
Patent GB-200822-A (GB)
Title: Improvements in micrometer gauges for measuring internal and external dimensions
IPC: G01B3/22
Filed: 1923-07-11
Abstract: 200,822. Johansson, C. E. July 11, 1923. Addition to 196,925. Indicating.-Linear dimension gauges according to the parent Specification are modified by mounting the rough measurement pointer 10 and the accurate measurement pointer 16 on a common pivot 34, and providing flat springs 35, 36 tending to move them against a stop 37. For measuring internal dimensions the adjustable contact member or anvil 4 is mounted in an arm 33, and the movement of the sliding contact member 5 is transmitted to the pointers by a lever 38 pivoted at 39. The pointers bear on the lever at 45, 46. the dimensions being such that the end of the pointer 16 moves through, say, ten times the distance covered by the end of the pointer 10. The accurate measurement pointer 16 performs movement only during movement of the rough measurement pointer 10 in the vicinity of its zero point on the scale. Bearing edges 44, 45 are carried by adjustable slides on the lever 38, so that the relative movements may be adjusted, and the arrangement of the lever enables long holes of small diameter to be measured. In a form for external gauging the adjustable contact-member 4 is mounted on an arm 33<a> as indicated in broken lines.