baber/WOPTO huggingface dataset:
Patent GB-469452-A (GB)
Title: Improvements in the manufacture and production of ammonium sulphate and sulphur from gases
IPC: C01C1/247
Filed: 1936-01-23
Abstract: A process for the production of ammonium sulphate and sulphur from gases containing hydrogen sulphide and, if desired, ammonia, comprises catalytically oxidizing the hydrogen sulphide in the gases to sulphur dioxide, and contacting the resulting gas in only one washing stage, while in a hot state, with a neutral to acid washing liquor containing thiosulphate while so controlling the temperature of the washing liquid that it enters the washer at about 25--40 DEG C. and leaves it at about 35--60 DEG  C.  The acid solution in the washer becomes enriched in thiosulphate, sulphate, sulphite and bisulphite, and is heated to 100--140 DEG  C. for the production of ammonium sulphate and sulphur.  When the acid content of this liquid is insufficient, sulphur dioxide from other sources, or sulphuric, nitric or phosphoric acids, or acid salts are added.  In an example, steam is added to coke oven gas, the mixture heated to 320 DEG  C., and passed with a quantity of air over a catalyst consisting of lead and nickel oxides applied to coke in the form of their nitrates.  The gas from the catalyst at 510 DEG  C., is cooled and passed at 130 DEG C., into the thiosulphate washing liquid having a hydrogen ion concentration ranging between neutral reaction and pH=6.  The washing liquid is circulated through a cooler.  When sufficiently concentrated, part of the liquid is continuously withdrawn, freed from tar, and heated to 100 DEG  C. by leading in steam.  During the conversion into ammonium sulphate and sulphur, the temperature uses to 150--160 DEG  C.  The sulphate solution is evaporated to form the solid salt, and the sulphur burned to sulphur dioxide which may be added to the washing liquid.  The thiosulphate washing liquid is formed initially by passing into water the gases from the catalyst before this has reached its full activity, in which case the gases contain ammonia, sulphur dioxide and unconverted hydrogen sulphide. Another similar example is given in which there is used a washing tower containing a built-in cooler.  The gas is passed into the washer at 180 DEG  C.  The washing liquid may be withdrawn periodically or continuously for conversion into ammonium sulphate and sulphur.  If the starting gases do not contain ammonia, this may be added at any time prior to the washing operation, or it may be introduced by means of the washing liquid. Any hydrogen sulphide present in the gases after the catalytic oxidation is absorbed by the thiosulphate washing liquid. Specification 334,526, [Class 1 (ii)], is referred to.
Patent GB-725672-A (GB)
Title: Treatment of hides and skins
IPC: C14C3/22
Filed: 1953-01-26
Abstract: Copolymers of a vinyl alkyl or alkyl substituted ether with maleic anhydride are made by mixing maleic anhydride, lauroyl peroxide and benzene at elevated temperature and continuously bubbling into the mixture the vinyl ether.  Vinyl ethers mentioned are n-butyl, isobutyl, 2-methoxyethyl, and 2-ethoxyethyl.  The copolymers are used for treating hides and skins (see Group IV (a)).
Patent GB-546351-A (GB)
Title: Improvements relating to flexible coupling discs
IPC: F16D3/78
Filed: 1941-02-19
Abstract: 546,351. Flexible shaft couplings. HARDY, SPICER & CO., Ltd., and WALDRON. T. A. Feb. 19, 1941, No. 2240. [Class 80 (ii)] In a flexible coupling disc 10 having metal bushes slidably engaged by pins 12 on the shafts, each bush consists of parts 16, 17, screwed or telescoped one on the other, with end flanges 18, 19. The two parts are adjusted so that the disc 10 is compressed between the flanges 18, 19, and they are then locked together such as by riveting one part over the other. One or more washers 20 may be inserted between the flanges 18, 19 and the disc 10 so that one size of bush may be used for different thicknesses of discs.
Patent GB-344151-A (GB)
Title: Manufacture of cellulose esters
IPC: C08B3/00
Filed: 1930-01-22
Abstract: Cellulose is hydrated by means of nitric acid and is then heated with an aliphatic acid at 100-170 DEG  C. without a catalyst until substantially 2 1/2 -3 molecular proportions of the fatty acid have been combined with an amount of cellulose corresponding with 24 carbon atoms.  Any of the usual forms of cellulose material such as cotton, cotton linters, rag stock, or wood pulp may be employed, and the material may be preliminarily bleached or treated with alkali. In an example cotton linters are treated in a bath of nitric acid of 68 per cent strength at room temperature for 1 hour.  The material is separated from the acid, washed with water and the latter is removed by treatment with alcohol or benzol.  The dry hydrated material is then heated with a fatty acid such as acetic, propionic, butyric, valeric, caproic, or heptylic acid.  The wet hydrated material may be heated with a fatty acid if desired.  When the dry material is boiled with glacial acetic acid for 150 to 200 hours, from 13 to 15 per cent of acetyl is introduced into the cellulose molecule. Similar treatment of non-hydrated cellulose results in the introduction of only 6-8 per cent of acetyl.  Other processes are also referred to in which cellulose precipitated from cuprammonium solution, or regenerated from cellulose xanthate, or obtained by saponification of cellulose nitrate, or which has been mercerized with strong caustic soda, is boiled with acetic acid.  The partially esterified material may be further esterified with the aid of a small proportion of acid anhydride and a catalyst milder than sulphuric acid.
Patent GB-553901-A (GB)
Title: Improvements relating to sheet metal nuts
IPC: F16B39/38
Filed: 1942-02-13
Abstract: 553,901. Locking nuts. ROBERTSON, E. R. Feb. 13, 1942, No. 2300/43. Divided out of 557,351. [Class 89 (i)] A sheet metal nut has a base portion and a tapped body portion provided at the end remote from the base with means for securing one or more wires to render the nut self-locking. The base may be upwardly or downwardly flanged at 3 and shaped to fit a spanner, or may be formed so that the nut may be employed as an annular nut. The body 2 is preferably outwardly flanged at 4, the flanges being slotted to receive two wires 6, arranged tangentially of the threads preferably curved to suit the bolt, and locked in place by bending over the ends at 7<1>. A U-shaped wire or a single wire may be employed and the wire may be of elliptical or triangular section. Specification 536,862 is referred to.
Patent GB-228199-A (GB)
Title: Improvements in or relating to membrane or plate springs for manometers and aneroid barometers
IPC: G01L7/08
Filed: 1925-01-26
Abstract: 228,199. Schõffer & Budenberg Ges. Jan. 25, 1924, [Convention date]. Barometers; elastic-diaphragm pressure gauges. -Comprises a membrane or diaphragm in which the annular corrugations axe formed on one face only, the other face being flat except for interruptions by small annular grooves. The corrugated face is turned towards the inflowing pressure medium so that on overload when the membrane is passed up against the cover of the instrument the flat surfaces c<1>, d<1>, e<1>, f<1> bear against the cover and the membrane is not deformed.
Patent GB-523184-A (GB)
Title: Improvements in or relating to gas turbine plant
IPC: F02C3/16
Filed: 1939-01-23
Abstract: 523,184. Gas turbines. JENDRASSIK, G. Jan. 23, 1939, No. 2343. Convention date, Jan. 26, 1938. [Class 110 (iii)] In a gas turbine plant comprising a compressor, a turbine, a combustion chamber and a heat exchanger for preheating the air for the combustion chamber by the exhaust gases of the turbine, the combustion is so arranged that only a part of the air enters the combustion space and that only part of the fuel is burnt ; the combustion being completed in the initial stages of the expansion in the turbine after the addition of the remaining part of the air. The compressor 1 supplies air to the combustion chamber 16 of the turbine 10 through a heat exchanger 8 heated by the turbine exhaust gases. The combustion chamber is provided with baffles 17 spaced around its periphery which direct only a portion of the combustion air to the combustion space which is so designed that the fuel from the atomisers 18 is only partially burnt. The gases leaving the combustion space mix with the remaining portion of the air and enter the turbine blading 15 when the combustion of the fuel is completed. In a modification, the combustion chamber 26, Fig. 4, is placed in a byepass duct 25 and the air supply to the combustion chamber controlled by a damper 31. In a further modification, the combustion chamber 26 is replaced by a furnace for burning solid fuel with dampers controlling the air supply.to the furnace and the mixing air. The solid fuel may be coal, brown coal, coke, wood etc. Reference has been directed by the Comptrollerto Specification 514,620.
Patent GB-524179-A (GB)
Title: Improvements in or relating to cold forging machines
IPC: B21K1/44
Filed: 1939-01-24
Abstract: 524,179. Forging bolts &c. GREENWOOD & BATLEY, Ltd., and MACLAGAN. J. C. M. Jan. 24, 1939, No. 2392. [Class 83 (iv)] A cold forging machine for heading bolts &c. in which the operation requires two stages, has multiple dies so that a completely headed blank is produced at each stroke of the header slide which carries a central coning punch 7 with finishing punches 6, 8 one on each side. Two dies 10, 11 are mounted in a slide 12 operated by a rockshaft 15 driven through a two to one gear from the shaft 4. The dies have ejector pins 16 operated through links 19 and levers 17 from a cylindrical slide 20 operated by the shaft 4. A rack 22 oscillates the cylindrical slide so that the eccentric pin 20<SP>x</SP> actuates the levers 17 alternately. A cut off slide 27 co-operates with a transfer finger not shown to supply blanks to that die which is opposite the punch 7. The dies 10, 11 receive blanks alternately that in the die 10 being finish headed at 6 and that in 11 at 8.
Patent GB-729354-A (GB)
Title: Shoes
IPC: A43B3/14
Filed: 1953-01-29
Abstract: 729,354. Boots &c. BERGMANS, J. A. Jan. 29, 1953 [Jan. 13, 1952], No. 2565/53. Class 17 (2). A moccasin type shoe has a leather sole 3 moulded to provide an upstanding rim 5 and a depression 4, Fig. 2, at the heel into which a heel piece 1, having a tapering extension 2, is fitted. An upper 6 fitted to a reduced part of the rim 5 to form a seam 8. A cover strip 7 is first stitched to the upper 6 and is then stuck down over the ' seam 8 which is completed by stitches at 9, 9 which pass through the upper and reduced part of the rim 5 above the cover strip 7 and through the cover strip 7 and rims 5 respectively. The seam 8 is water- and dust-tight and lies well above the level at which the foot contacts the sole unit.
Patent GB-718420-A (GB)
Title: Improvements in or relating to rotary printing machines
Inventor: HANSSON GUSTAV HUGO
IPC: B65H5/02
Filed: 1951-02-01
Abstract: 718,420. Toothed gearing. AKTIEBOLAGET HEDEMORA VERKSTADER. Feb. 1, 1951, No. 2566/51. Class 80 (1) [Also in Group XVI] Gearing providing an alternating-speed output, for example to give a steady operative stroke and a quick return to a paper feed carriage on a printing machine (see Group XVI), comprises a steadily rotating input shaft 101 to which is keyed an arm 102 carrying, freely mounted on a pin 104, a pinion 105 mashing with an internally-toothed ring 108 on a wheel 111 geared through an idler 130 to a gear 132 on the output shaft 133; the pinion 105 is integral with a driver pinion 106 and an arresting disc 107 which engage respectively and alternately with a fixed gear sector 124 (whereby the pinion 105 drives the wheel 111 faster than the shaft 101) and with a fixed cam 118 (whereby the shaft 101 and wheel 111 rotate as one); the sector 124 is bolted to the small-radius part 123 of the cam 118 whose sleeve 119, free on the shaft 101. is keyed to an arm 121 anchored by a strong shock-absorbing spring 122; replaceable pre-cogs may be provided on the sides of the pinion 106 and sector 124 to facilitate engagement.
Patent GB-122063-A (GB)
Title: Improvements relating to Machine and other Vices and like Work Holding or Setting Appliances.
Inventor: JERRIM JAMES HENRY
IPC: B25B1/12
Filed: 1918-02-13
Abstract: 122,063. Jerrim, J. H. Feb. 13, 1918. Vices.-Machine and other vices or work-holders of the type having jaws with adjustable parts to conform to the shaft of irregular work, are provided with pivoted jaw members independently adjustable and capable of being locked in the adjusted positions. As shown in Figs. 1 and 3, the vice comprises a base a with a movable jaw b of usual construction, and a fixed jaw with two pivoted members c, d having faces e for gripping the work. These faces e may be bevelled jaw-plates as shown adapted to force the work down when it is gripped. The members c, d have inclines f backed by upstanding parts on the base a, and are formed with teeth g engaged by locking- plungers h to hold them in the adjusted positions. For moving the members c, d, pins j may be provided. In the modification shown in Figs. 4 and 5, the members c, d are of quadrant form with integral pivot projections, and each member carries a bolt l, the head of which engages in a curved undercut groove m. Locking-plungers also may be provided, as in Figs. 1 and 3.
Patent GB-1014307-A (GB)
Title: A cage for cylindrical roller bearings
IPC: F16C33/54
Filed: 1963-01-22
Abstract: 1,014,307. Bearings. W. SCHAFFLER, and G. SCHAFFLER, [trading as SCHAFFLER OHG.]. Jan. 22, 1963 [Feb. 20, 1962], No. 2704/63. Heading F2A. A cage for cylindrical thrust bearing rollers 3, is shaped from an annular flat sheet metal disc from which pockets to receive the rollers 3 are punched with the metal between pockets shaped to portions 6 and 7 parallel to the pitch plane 5 of the rollers providing roller guide surfaces 9 and which are joined by narrower portions 8 out of contact with the rollers 3. The cage is provided with axially directed rims 10 at inner and outer peripheries which confine the rollers within the pockets. In alternative embodiments, the outer rim may be flanged inwardly, Fig. 4, to hold a ring of low friction material or folded over inwardly to provide a reinforced double thickness rim. The outer rim, Fig. 6, may also be similarly reinforced by folding over outwardly with the inner rim shaped to channel section or, alternatively, the inner rim may be unmodified and the outer rim flanged to channel section.
Patent GB-1010851-A (GB)
Title: Improvements relating to electrical insulation material
Inventor: WEB DENISE ROSETTA
IPC: H01B3/00
Filed: 1961-01-24
Abstract: An electrical insulating material is made by curing a mixture of 5 pts. (by weight) of an elastomer-forming organopolysiloxane and at least 3 pts. of powdered aluminium.  The mixture may also contain a chemically inert thinner (unspecified) and a silica filler.  The mixture may be cured by a catalyst combination of an organic silicate and an organo-tin compound.  An example is given.  Uses.-For potting electrical components.
Patent GB-762685-A (GB)
Title: Improvements in or relating to television receivers
Inventor: HEIGHTMAN DENIS WILLIAM
IPC: H04N5/53
Filed: 1954-01-29
Abstract: 762,685. Automatic gain control. ENGLISH ELECTRIC CO., Ltd. Dec. 14, 1954 [Jan. 29, 1954], No. 2756/54. Class 40(5) In a television A.G.C. circuit the cathode of a diode 7 is directly connected to the anode of a video amplifier 6 at which the composite signal is such that synch. pulses are positive-going. Positive-going pulses derived from the line timebase transformer are applied to the grid of limiter 3 via a time-delay circuit 2, 4. Positive-going impulses of constant amplitude appear in the anode circuit of the limiter 3, the circuit 2, 4 being such that these impulses occur during the " back-porch period of the signal. Pulses of controllable height, adjustable by means of potentiometer 5 which comprises a contrast control, are applied to the anode of the diode 7 and cause conduction during the " back-porch " period. The tips of the pulses are thereby clamped at the black level and the base of the pulses provides a negative potential which after smoothing by network 9, 10, 11 comprises the A.G.C. potential. As an alternative, positive going impulses occurring during the blanking periods of the frame synchronizing signals may be used.
Patent GB-1177618-A (GB)
Title: Phosphonamidothioates and their Nematocidal use
Inventor: HAYNES GEORGE RUFUS
IPC: C07F9/24
Filed: 1967-01-19
Abstract: 1,177,618. Nematocides containing phosphorodiamidothioates. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. 19 Jan., 1967 [21 Jan., 1966], No. 2821/67. Heading ASE. [Also in Division C2] Crops are protected against attack by nematodes by treating soil in which such crops are growing or are to be grown with a nematocidally effective amount of a composition comprising a nematocidally acceptable carrier and/ or surface active agent and a phosphoroamidothioate of the formula: wherein m is 1 or 2, m+n=2, R 1  and R 2  each represents an alkyl, alkenyl, chloroalkyl or bromoalkyl group of up to 12 carbon atoms, R is H or has one of the meanings given for R 1  and R 2 , R 3  is alkyl, chloroalkyl, bromoalkyl, chloroalkenyl, cycloalkyl or cycloalkenyl group of up to 12 carbon atoms, or when m is 2, may additionally represent an alkenyl or alkynyl group. The invention also includes nematocidal compositions comprising a phosphorodiamidothioate falling within the above formula and having the general formula (RR 1 N) 2  . P(O)SR 3  wherein R and R 1  are C 1 -C 4  alkyl and R 3  is an alkyl, alkenyl, alkynyl, cycloalkyl or chloroalkyl group of up to 12 carbon atoms. The compositions may be in solid or liquid form and organic solvents or emulsifying and dispersing agents may be present. Other pesticides or other nematocides, e.g. 1, 3-dichloropropene, 1, 3-dichloropropane or 1, 2-dibromo-3-chloro-propane may also be included in the compositions.
Patent GB-405032-A (GB)
Title: Improvements in or relating to processes for facilitating the treatment of fibrous threads impregnated with rubber
IPC: C08J3/24
Filed: 1932-07-29
Abstract: 405,032. Treating yarns. BONGRAND, J. E. C., 95, Rue de Monceau, Paris, and LEJEUNE, L. S. M., 1, Place Gambetta, Wasquehal, Nord, both in France. July 29, 1932, No. 2870/33. Divided on 405,312. [Class 120 (iii).] Rubber-impregnated yarns or threads are coated with a powder to facilitate after treatment such as vulcanizing or weaving. The powder may be sulphur, zinc carbonate, zinc oxide, zinc salts of fatty acids, and the like. Zinc stearate with or without zinc oxide is preferred. This produces a slippery surface, and enables the threads to be woven, after which the rubber can be vulcanized if sulphur has been added to the impregnating solution, or the fibre has been mordanted with a vulcanizing agent prior to the impregnation. A thread 2 is passed from a bobbin 14 over a roll 15 which dips into powder in a trough 17. From there it is led to a bobbin 21 mounted on a bell-crank 22. When full, the bobbin 21 is released by operating a handle 25. The shaft 16 of the roll 15 may carry a cam which causes a blade dipping into the powder to vibrate, and project the powder on to the roll. Specification 405,312, [Group V], is referred to.
Patent GB-901294-A (GB)
Title: New vat dyestuffs of the dibenzanthrone series and process for their manufacture
IPC: C09B3/38
Filed: 1961-01-25
Abstract: Vat dyestuffs of the dibenzanthrone series are made by heating an aminodibenzanthrone with a primary hydroxyalkylamine.  The aminodibenzanthrones used include mono-and diamines of dibenzanthrone and isodibenzanthrone obtained by reducing nitro-dibenzanthrones made by the nitration of dibenzanthrone or isodibenzanthrone.  Examples are given.  The dyes dye or print fibres of natural or regenerated cellulose in blue or black shades.
Patent GB-123558-A (GB)
Title: Improvements in or relating to Ferro-concrete Ship Construction.
Inventor: STEWART WILLIAM JOHN
IPC: B63B5/16
Filed: 1918-02-20
Abstract: 123,558. Stewart, W. J., and Woolcock, J. Feb. 20, 1918. Concrete vessels.-In reinforced-concrete ships, the reinforcement consists of two parallel networks, the transverse members of which comprise two elements or bars a, b, spaced apart by inclined ties e, such transverse members being adapted to be ber.t to the section of the vessel without altering the spacing of the elements. The elements may be corrugated to permit alteration of length when bending. The longitudinals d, e are supported in the angles between the elements and the ties, as shown. The ties may all slope in the same direction, and they may be bent around the elements a, b. Or the reinforcement may be formed by slotting and expanding the light double-bulbed rolled section shown in Fig. 5.
Patent GB-270381-A (GB)
Title: Improvements in or applicable to reducing valves
IPC: G05D16/06
Filed: 1926-02-03
Abstract: 270,381. Dewrance, Sir J. Feb. 3, 1926. Pressure-regulating valves.-A reducing- valve of the kind controlled by an auxiliary valve has both main and auxiliary valves provided with lift valve members balanced by a diaphragm and actuated by a second diaphragm. The main valve a is carried by a spindle c connected to a balancing diaphragm b and to an actuating diaphragm d backed by a piston d<1> open to atmosphere on its lower face. Inlet pressure is admitted through a manually actuated valve to the space above the diaphragm d and is ex hausted to the outlet through the auxiliary valve g, which is opened by springs when the reduced pressure acting on its actuating diaphragm falls below a predetermined minimum. Specifications 16313/05 and 20008/12 are referred to.
Patent GB-230961-A (GB)
Title: Improvements relating to gas heated furnaces, kilns and the like
IPC: F27B9/30
Filed: 1924-02-06
Abstract: 230,961. Bell, E. A. Feb. 6, 1924. Gaseous-fuel furnaces.-In a gas-fired furnace, kiln or the like comprising gas and air passages arranged in parallel relation adjacent to a combustion chamber communicating with one of the passages through a number of openings and with the other by tubular nozzles extending through the openings, the tubular nozzles are tapered with their larger ends arranged adjacent to the combustion chamber. Fig. 1 shows the invention applied to the combustion zone of a tunnel kiln supplied with air from passages c through openings b and gas from a passage e through the tubular nozzles d. Alternatively, air may be supplied from the passages e through the nozzles d and gas from the passages c through the openings b. The air supply may be heated in passages arranged adjacent to the kiln outlet. Plugs f are provided in the kiln wall for giving access to the nozzles, the inner ends of which may be provided with plugs for regulating the admission of air or gas. The gas and air supply passages may be arranged in the roof of the kiln, the flames being directed downwardly and the combustion products being withdrawn through the floor.
Patent GB-141148-A (GB)
Title: Improvements in collapsible perambulators
IPC: B62B7/06
Filed: 1919-02-08
Abstract: 141,148. Giles, F. N. Feb. 8, 1919. Perambulators.-In a collapsible perambulator with three hinged members a, b, c which can be arranged for a sitting or reclining position, the weight of the members a, b and of a reclining child are entirely supported by the flexible material e secured to the frame d. The back member a, when raised to its inclined position, is supported by a bail f, hook and eye, straps, &c., and the flexible material disposes itself in pleats, thus avoiding the formation of a space between the back and the flexible material.