baber/WOPTO huggingface dataset:
Patent GB-656145-A (GB)
Title: Improvements in sulphur recovery
IPC: C22B1/02
Filed: 1947-12-01
Abstract: Sulphur is recovered from iron sulphide bearing material by treating with aqueous sulphuric acid to form hydrogen sulphide and aqueous ferrous sulphate, recovering solid ferrous sulphate from the solution, heating the ferrous sulphate to produce ferric oxide, sulphur dioxide and sulphur trioxide, and reacting the hydrogen sulphide and sulphur dioxide to form sulphur.  Sulphide ore is roasted under oxidizing conditions to form sulphur dioxide and a sulphide matte.  The finely divided matte is treated preferably countercurrent in a series of vats at 50 DEG  C. with aqueous sulphuric acid to form (1) ferrous sulphate solution, (2) hydrogen sulphide, (3) a solid residue of sulphides of cobalt, copper, gold, platinum, silver, zinc and nickel.  Part of the zinc may be recovered from an intermediate stage as sulphate.  The ferrous sulphate solution is cooled or evaporated to recover the solid salt, and the salt is dehydrated at below 480 DEG  C. in a rotary kiln by a countercurrent of combustion gases.  The dehydrated salt is heated in a muffle furnace at 480-1300 DEG  C. to produce ferric oxide, sulphur dioxide and sulphur trioxide; the sulphur trioxide is absorbed by passage through concentrated sulphuric acid for use in treating fresh matte.  The sulphur dioxide and hydrogen sulphide are reacted in an atmosphere of water vapour at 50-100 DEG  C. according to the process and using the reactor of Specification 578,136.  The sulphur dioxide from the ore roasting may be converted to sulphuric acid for matte treatment.  Specifications 566,375, 656,140, 656,141, 656,142 and 656,143 are referred to.
Patent GB-1518824-A (GB)
Title: Spring lock retaining means for earthworking tips
IPC: E02F9/28
Filed: 1975-07-29
Abstract: 1518824 Digger teeth assemblies CATERPILLAR TRACTOR CO 29 July 1975 [5 Aug 1974] 31760/75 Heading B8H The retaining means for a keeper pin 18 of a digger tooth assembly 10 comprises a torsion spring 23 that is substantially encapsulated by an annular, elastomeric collar 24.
Patent GB-277839-A (GB)
Title: Improvements relating to globe fittings for electric lamps
IPC: F21V17/12
Filed: 1926-12-15
Abstract: 277,839. McGeoch, L. A. M. Dec. 15, 1926. Securing globes to holders.-The free end of one limb of a U-shaped globe guard 3 is accommodated in a socket which may be opened by a key to permit the guard to swing freely about the axis of the opposite limb to an extent sufficient to permit removal of the globe 4 from the gallery 1. The movable limb is received in a channel formed by a groove 10 in a lug 7 on the skirt of the gallery and a complementary groove 11 in a hasp-like member 8 hinged at 9 to the lug, the member 8 having a countersunk perforation 12 accommodating a key-operated locking screw 13 engagable with a screw-threaded perforation 14 in the lug. The ends of the limbs pass freely through the gallery and are screwthreaded for engagement with nuts 6 which press the globe up against a flexible washer seated in the gallery.
Patent GB-686461-A (GB)
Title: Improvements in pirn winding machines
Inventor: BODEL CHARLES CLARKE
IPC: B65H59/00
Filed: 1949-12-13
Abstract: 686,461. Winding yarn. LINEN INDUSTRY RESEARCH ASSOCIATION. Dec. 13, 1950 [Dec. 13, 1949], No. 31917/49. Class 120(ii) A pirn winding machine in which the pirn is rotated at constant speed, is furnished with a yarn tension compensator device controlled by a cam 16 and comprising a guide 5 moving at right angles to the direction of travel of the yarn and between two normally stationary guides 4, 6. Yarn 3 from a hank 1 on a reel 2 is furnished to a pirn 8 rotated by bevel gearing 13, the yarn being traversed by guide arm 7 oscillated by a cam 9 through linkage 10. The cam 16, rotated in synchronism with the cam 9, moves the thread guide 5 up and down between normally fixed guides 4, 6, over which the yarn passes, the guide 5 being attached to a pivoted lever 14. The guide 5 has a sloping front face 21 so that in threading- up the yarn will find its way into the guide slot or when an arm 17 carrying the guides 4, 6, is swung downwardly about the rocker 18 against spring-action 19, a thumb-piece 22 being provided for this purpose. A slot 23 and pin 20 limit the movement of the arm 17. The traverse guide 25 is pivoted at 26 to the guide arm 7, so that it always contacts the coned end of the pirn, the guide 25 being slotted at 27 and arranged to be self-threading.
Patent GB-866953-A (GB)
Title: Improvements in or relating to railway vehicle retarder systems
IPC: B61K7/08
Filed: 1958-10-07
Abstract: 866,953. Railway-track brakes. GENERAL RAILWAY SIGNAL CO. Oct. 7, 1958 [Oct. 25, 1957], No. 31953/58. Class 103 (1). A railway vehicle retarding system includes a vehicle retarder of the type utilizing the weight of a vehicle thereon to provide braking force, and control means adapted selectively to condition said retarder to respond to the weight of the vehicle bearing thereon either to apply a braking force or to yield to said weight and apply no braking force. Brake beams B are supported by levers L1, L2 on opposite sides of rails R, each lever L having an end 10 bearing on a fixed plate 14, and each lever L2 having an end 11 bearing on a piston P, an extension 18 supported by a spring S1 and being articulated at 17 below a nut 16 supporting the brake beam. The piston P is supported by a spring S2 of sufficient strength to hold the rail R off a rail plate 19 when the retarder is empty. In the retarder " closed " position, Fig. 2, a solenoid-actuated valve EV is de-energized to admit fluid from reservoir 27 to cylinder C via check-valve 1VCK and pipe 23; when the weight of the car is applied to the retarder through wheel W the beams are moved in a pincer action against the wheel W, the piston P being held in the raised position by the fluid locked in cylinder C by valves EV and IVCK. In the " open " position, valve EV is energized by closure of switch 41 by relay CR, and fluid is able to flow back to reservoir 27 via check-valve 2VCK, Fig. 3, not shown, so that on entry of a car into the retarder, the spring S2 becomes depressed, expelling fluid from the cylinder C and the rails R rest on plates 19 without braking. The retarder is held in the " open " position after exit of the car by vacuum below piston P until valve EV is de-energized. A vent 35 in the cylinder admits air above piston P for quick action. The relay CR controlling valve EV, can be energized by manually operating push-buttons or by a plunger of a remotely-controlled solenoid on a locomotive selectively operating treadles at the entrance and exit of the retarder, Figs. 4 and 5, not shown. In a modification in Fig. 6, not shown, fluid is supplied to both sides of the piston P to enable the spring to be held compressed and the retarder open by fluid instead of vacuum.
Patent GB-949286-A (GB)
Title: Complex manganese salts of ethylenebisdithiocarbamic acid and fungicidal compositions containing same
Inventor: WINDEL HERMANN
IPC: C07F13/00
Filed: 1962-08-21
Abstract: The invention comprises any complex compound of manganese ethylene-bis-dithiocarbamate with ammonium and/or an amine. Specified amines are methylamine, ethylamine, dimethylamine, diethylamine, methylethylamine, ethylenediamine and pyrrolidine. The complexes may be prepared by reacting a water-soluble salt of ethylene-bis-dithiocarbamic acid with a water-soluble manganese salt in the presence of the complex-forming compound.  Mixtures of the complexes with thiuram disulphides may be obtained by carrying out the above reaction so as to react only part of the ethylene-bis-dithiocarbamic acid, and oxidising the remainder to the thiuram disulphide, e.g. with hydrogen peroxide or alkali nitrite and acid; or the two steps may be reversed.  The complexes of the invention are fungicides (see Division A5).  Specification 840,211 is referred to.ALSO:Fungicidal agents contain as active ingredient a complex of manganese ethylene-bis-dithiocarbamate with ammonia and/or an amine; specified amines are methylamine, ethylamine, dimethylamine, diethylamine, methylethylamine, ethylenediamine and pyrrolidine (see Division C2).  The complexes may be compounded with one or more thiuram disulphides such as tetramethylthiuram disulphide, dipyrrolidylthiuram disulphide, and the thiuram disulphide of ethylene-bis-dithiocarbamic acid; or with other difficultly water-soluble salts of dithiocarbamic acids, such as the Zn, Mn, Fe, Ni and Cu salts of dimethyldithiocarbamic acid, tetraethyldithiocarbamic acid and ethylene-bis-dithiocarbamic acid. The compositions may be applied as dusts, dispersions or wettable powders containing conventional auxiliaries.  An example uses aqueous dispersions of a mixture of active ingredient with sodium lignin sulphonate.  Specification 840,211 is referred to.
Patent GB-282971-A (GB)
Title: Improvements in and relating to the axles and bearings of colliery hutches, light railway bogies, railway carriages and the like
IPC: B60B37/04
Filed: 1926-12-18
Abstract: 282,971. McLintock, J. Dec. 18, 1926. Force-feed lubricating -Solid lubricant is fed to a vehicle axle a enclosed in a long sleeve b by a spring-pressed plate accommodated in a box k
Patent GB-1149276-A (GB)
Title: Extrusion head for a screw extruder for plastics material
IPC: B29C48/09
Filed: 1966-07-18
Abstract: 1,149,276. Adjustable extrusion dies. ALLGEMEINE MASCHINENBAU G.m.b.H. 18 July, 1966 [29 July, 1965], No. 32090/66. Heading B5A. A mandrel 7 of a tube-extrusion die la, 1b is provided at its upstream end 6 with a valve 11 which is movable longitudinally into passageway 16 by rotation of hand wheel 12 and consequent movement of a bell-crank lever 15. A ring 3 gripped between die parts la, 1b is connected to a further ring 5 by ribs 4 through one of which extends spindle 13 of wheel 12. Valve 11 may have an extension 17 which is movable into inlet 18 and the die may have attached a sizing die 10.
Patent GB-342653-A (GB)
Title: Process for obtaining a carbonaceous product
IPC: B01J13/00
Filed: 1929-10-23
Abstract: Carbonaceous products in the state of colloidal division are obtained by bringing a primary substance, other than carbon black, into a state of extreme division, i.e. the condition of true solution, colloidal solution or coagulum and incorporating with the substance in this state a body in the midst of which it can be dried and if desired carbonized without agglomeration. Phosphoric acid, flowers of sulphur and anhydrous sodium carbonate are mentioned as substances suitable for the dehydration process. Examples of the treatment of various raw materials are as follows: (1) Wood, reeds or the like are finely divided and treated with sulphuric acid of a concentration of from 1-10 per cent in an autoclave.  The mass is washed to eliminate the acid and is then oxidized with nitric acid or aqua regia, the product obtained being wholly peptizable in ammonia.  The colloidal solution is filtered and coagulated by the addition of acid and the coagulum mixed with flowers of sulphur or phosphoric acid, dried, and carbonized the admixed substances being removed by volatilization or washing.  The preliminary oxidation may be effected by gaseous chlorine which may be passed together with washing water through the mass of material placed on a filtering surface.  (2) Lignite or brown coal is ground, mixed with quartz granules and treated with chlorine until peptizable in ammonia.  The mass is freed from chlorine and its salt peptized in ammonia coagulated and carbonized in phosphoric acid.  (3) If more fully carbonized materials such as wood charcoal are to be treated oxidation by nitric acid alone is not effective and a pretreatment with alkali is employed.  (4) The oxidation treatment may be effected electrolytically, e.g. by nascent chlorine.  When it is not desired to treat the colloidal mass at a high temperature it may be mixed with flowers of sulphur and dried at 105 DEG  C., the sulphur being removed by carbondisulphide or it may be ground with anhydrous sodium carbonate and heated to 300 DEG -400 DEG  C. Specification 215,327, [Class 90, Non-metallic elements], is referred to.
Patent GB-982980-A (GB)
Title: Improvements in tracked vehicles
IPC: B60V1/00
Filed: 1961-04-14
Abstract: 982,980. Air cushion vehicles. SOC. BERTIN & CIE. April 14, 1961 [April 14, 1960], No. 32289/64. Divided out of 982,979. Heading B7K. In a tracked vehicle, an air cushion 22 is generated between the lower run of each track 15 and a generating device 18 by the formation of a fluid curtain 28 generated by generator 20. As shown in Fig. 2, each track may be troughshaped and separate lateral nozzles 31, 32 and 33, 34 provided to generate lateral cushions to resist side loads. An injector device (Fig. 3, not shown) is described for generating the primary air cushion.
Patent GB-741861-A (GB)
Title: Improvements in radio detection and ranging systems
IPC: G01S19/24
Filed: 1948-12-14
Abstract: 741,861. Radar systems; aerial coupling arrangements. ARMSTRONG, E. H., BOSE, J. H., and HULL, R. E. Dec. 14, 1948 [Dec. 30, 1947], No. 32293/48. Classes 40 (5) and 40 (7). A radar system comprises a frequency modulation transmitter in which a modulation oscillator 27 is adjustable in frequency to effect a signal swing of selected frequency and a heterodyne receiver in which frequencies derived in the transmitter are combined with the reflected signal to produce a derived signal of constant frequency (related to the speed of the reflecting object) when the period of the modulation oscillator is adjusted to equal the time for reflection of the signal. To produce at 61 a frequency that varies from 200 c.p.s. by an amount proportional to the speed of the target, the received signal is heterodyned four times by frequencies derived from the transmitter, the fourth frequency being 200 c.p.s. above that of the signal with which it is mixed, when the target is stationary. By means of a switch generator, Figs. VIIa, VIIb (not shown), amplifiers 17, 18 of the transmitter are energized for one cycle of the oscillator 27, then amplifiers 50, 51 of the receiver are energized for a similar period, and so on. Variable delay is introduced at 38 to prevent the receiver from responding to reflections from nearby objects. As the frequency of the oscillator 27 is decreased for more distant objects, circuits 86, 87 increase the gain of amplifiers 52, 53. The output from 61 passes to an indicator, Fig. VI, where a rejection filter 101 removes signals relating to stationary objects, which are shown on a C.R. tube 119, and band-pass filters 106 ... 111 provide for display on C.R. tubes 113 ... 118 according to the speed component of approach or recession of the target. A T.R. box, Fig. VIII, is connected to the main transmission line at 181, (2n+1) A from the end of the transmitter coupling loop. The receiver is protected by a quarter-wave section 184 containing a gas discharge tube 186, inductance 188 and tuning capacitance 189. Reactance of the bottom end of the centre conductor is tuned out by a capacitance 187. The T.R. box is balanced with respect to the main transmission line by an outer shield 183.
Patent GB-1459333-A (GB)
Title: Apparatus for drenching sheet material
IPC: A61B5/117
Filed: 1974-07-22
Abstract: 1459333 Coating apparatus DEFENCE SECRETARY OF STATE FOR 22 July 1975 [22 July 1974] 32413/74 Heading B2C Apparatus for drenching sheet material e.g. for developing latent fingerprints comprises a pair of vertically mounted, helically grooved, rollers 1,1' onto which reagent is poured down an inlet 8. Bearings 3, 4 of idler roller 1' are resiliently mounted by springs 6, 6'. A drain 11, and splash guards around the rollers are provided. Several pairs of rollers may be arranged in tandem.
Patent GB-392458-A (GB)
Title: Improvements in or relating to supercharging devices for internal combustion engines
IPC: F02B25/00
Filed: 1932-11-16
Abstract: 392,458. Valves ; cylinder ports and passages. AKTIEBOLAGET ATLAS DIESEL, Sickla, near Stockholm. Nov. 16, 1932, No. 32442. Convention date, Nov. 18, 1931. [Classes 7 (ii) and 7 (vi).] In a two-stroke engine, an automatic valve closed by the pressure in the cylinder is arranged between the inlet port for supercharging-air and the valve controlling same. The automatic valve 24, Fig. 1, may consist of a series of elastic flap valves as described in Specification 254,704. In the engine shown in Fig. 1, the piston first uncovers exhaust ports 28 and then inlet ports 27 admitting scavenging-air from a receiver 7. The supercharging-air contained in a receiver 21 passes through ports 20, 22 and a recess 19 in the piston into the chamber 23, from which, when the cylinder pressure has fallen sufficiently, it flows past the valve 24 to the inlet port 25. In modifications, the admission of supercharging-air to the chamber 23 may be controlled by a rotary valve, the exhaust port may also be controlled by a rotary valve, and the scavenging-air inlet may be fitted with automatic valves. Forms of double-acting engines with two sets of ports and automatic valves are also described. One of these is shown in Fig. 9, the supercharging-air from a pipe 92 being controlled by a piston valve 86 and automatic valves 94, 99. An arrangement of tangential inlet ports, giving a whirling motion to the supercharging-air, is also described.
Patent GB-160919-A (GB)
Title: Improvements in machines for slitting paper or other fibrous materials such as clothor asbestos into strips and winding same
IPC: B65H35/02
Filed: 1919-12-29
Abstract: 160,919. Boyd, T. A., and Boyd, H. A. Dec. 29, 1919. Addition to 145,135. Feeding, winding, and registering webs.-The machine described in the parent Specification, wherein webs of paper or like fibrous material such as cloth or asbestos are slit into strips and are deflected at right-angles from the line of issue from the cutters and are wound on to bobbins or cheeses, is provided with rollers 5, 10 for drawing the strips from the slitting mechanism and a guide pulley 13 over which the strips pass to the winding-bobbin 4.
Patent GB-740301-A (GB)
Title: Method of improving the useful properties of flints of mischmetal-iron alloys
IPC: C06C15/00
Filed: 1953-11-26
Abstract: A method of reducing the hardness and increasing the pyrophoricity of flints of mischmetal (Ce)-Fe alloys, comprises subjecting such alloys containing 10-30 per cent Fe with or without alloying additions, which may comprise 0.1-3 per cent Mg, 9.1-3 per cent Zn and 0.1-3 per cent Sn either individually or two or more together, after forming by casting or extrusion, to annealing at temperatures between 100 DEG C. and the temperature at which melting begins, preferably between 350 DEG  C. and 450 DEG  C., for a period of between 5 and 24 hours and allowing said alloys to cool to room temperature.
Patent GB-912750-A (GB)
Title: Improvements in or relating to fastening devices utilizing staples, nails or the like as fastening elements
IPC: B25C1/00
Filed: 1959-09-28
Abstract: 912,750. Stapling and nailing machines. ELASTIC A.G. Sept. 28, 1959 [Sept. 27, 1960], No. 32900/59. Class 89 (3). A machine for driving staples, nails, &c. comprises a driving blade 4, Fig. 8, stepped to provide a shoulder 7 and slidable in a channel 3. Staples 2, Fig. 1, in a magazine 1 are spring- pressed against the blade which, in its raised position, receives the leading staple under shoulder 7. When the blade is driven, this staple is moved down the channel with its legs straddling a projection 9, and when the blade is restored to its raised position, a bifurcated leaf-spring 10, 11 moves the staple laterally beneath the unstepped part of the blade. Spring 14 prevents the staple from rising with the blade. Next and each succeeding time the blade is driven, the staple thereunder is expelled into a workpiece and the leading staple in the magazine is moved down. Several shoulders may be formed in the driver so that the staples are advanced in more than one step before ejection.
Patent GB-459429-A (GB)
Title: Winding machines for yarns and threads
IPC: B65H67/08
Filed: 1935-05-03
Abstract: 459,429. Winding yarns &c. ABBOTT MACHINE CO., Wilton, New Hampshire, U.S.A.-(Assignees of Abbott, E. J., and Ring, J. E.) May 3, 1935, No. 32923/36. Convention date, May 19, 1934. Divided out of 459,357. Drawings to Specification. [Classes 120 (ii) and 120 (iii)] The invention is described with reference to the machine shown in Specification 459,357, but the claims are directed to a yarn or thread winding machine having a mechanism for uniting broken strands and a number of winding units which travel past said mechanism so that the latter is associated successively with the plurality of winding units, each unit comprising means for lowering and lifting the package into and out of contact with the winding roll to begin and stop winding during travel of the unit, an unwinding roll arranged in the path of travel of the units and means for causing the lifting and lowering means on the several units to associate the package therein with the unwinding roll. The machine may have the travelling and winding mechanism described in British Specification 268,161, [Class 120 (ii)], or that described in U.S.A. Reissue Specification 18,310 ; the yarn tensioner may be that described in U.S.A. Specification 1,965,363 and the slub catcher that described in U.S.A. Specification 1,905,259. British Specifications 459,413 and 459,414 also are referred to.
Patent GB-676710-A (GB)
Title: Improvements in or relating to treating carbon monoxide and hydrogen synthesis products
IPC: C07C9/14
Filed: 1949-12-23
Abstract: A synthesis product containing water, hydrocarbons, alcohols, esters, acids, aldehydes, and ketones, obtained from carbon monoxide and hydrogen, or a portion thereof is contacted in the vapour phase at 500-1000 DEG , preferably 700-950 DEG  F., with a basic compound of an alkali or alkaline earth metal whereby esters are hydrolysed to acids and alcohols, and acids are decarboxylated to hydrocarbons or ketones.  The synthesis product may be separated into a gas phase which is recycled, and a liquid phase consisting of both oil and water phases which is treated with the base.  The aqueous phase only may be treated or the oil phase may be fractionated into a gasoline and a gas-oil fraction and the former treated together with the aqueous phase.  Alcohols and ketones are substantially unaffected while aldehydes are polymerized and the polymers cracked.  Basic compounds specified are hydroxides, oxides, and salts such as carbonates, phosphates, and borates of, for example, Na, K, Ni, Ca, Ba, Sr.  Space velocities are about 1-10 vols. liquid synthesis product per vol. basic compound per hour, and are generally higher for alkali metal compounds while temperatures are lower.  Pressure is usually atmospheric but may be up to 500 p.s.i.  Fixed or moving bed or fluidized operation may be used.  After basic treatment of, for example, the entire synthesis product, it is separated, advantageously at 200-400 DEG  F., and 150-500 p.s.i., into gas, water, and oil phases.  The water phase yields aqueous azeotropes of alcohols and ketones by fractionation or flashing.  The oil phase is separated at 350-400 DEG  F. into gasoline and gas oil fractions, and the former solvent extracted, the latter treated by silica gel adsorption or boric acid esterification to recover alcohols and ketones.