baber/WOPTO huggingface dataset:
Patent GB-740733-A (GB)
Title: Improvements in or relating to the recovery of zinc
IPC: C01G9/00
Filed: 1953-11-10
Abstract: In the recovery of zinc from zinciferous material containing at least one other nonferrous metal, particularly copper by washing with an ammonia-ammonium carbonate solution, the zinc is selectively precipitated as a basic carbonate by heating the liquor preferably to 60 to 90 DEG C to volatilize ammonia, carbon dioxide and water to such a degree that the other metal values are not precipitated, the resultant precipitate is removed and the residual liquor is rejected to the washing step.  The process is applicable to the precipitation of zinc from ammonia-ammonium carbonate liquors containing dissolved copper, cobalt, nickel silver and cadmium together with minor amounts of lead and iron, thus brass, bronze or mixtures thereof with copper scrap are treated with ammonia and ammonium carbonate to dissolve zinc and copper as ammine carbonates and the copper largely precipitated by a reducing gas at superatmospheric temperature and pressure, preferably leaving about 70 grams of copper per litre in solution. This copper content should preferably be brought to the cupric stage by a mild oxidation before zinc recovery is effected. The ammine carbonate solution is heated at 75 DEG C to drive off ammonia and carbon dioxide and the solution then cooled or diluted to effect precipitation of basic zinc carbonate.  The ratio of zinc to copper in the filtrate which is rejected to the backing step, is preferably between 1 to 4 and 1 to 8.  The zinc precipitate is said to be of probably formula ZnO1ZnCO3 (NH4) CO3 which basic zinc carbonate-ammonium carbonate double salt may be subsequently calcined to remove the ammonia and carbon dioxide.
Patent GB-789628-A (GB)
Title: Improvements in power plants embodying hydraulic torque converters
Inventor: AHLEN KARL GUSTAV
IPC: F16H61/58
Filed: 1955-11-01
Abstract: 789,628. Hydrodynamic torque converters. SVENSKA ROTOR MASKINER AKTIEBOLAG. Nov. 1, 1955, No. 31162/55. Drawings to Specification. Class 69 (2). The torque converters described are substantially the same as those described in Specification 703,473. U.S.A. Specifications 1,900,118 and 1,900,119 also are referred to. Reference has been directed by the Comptroller to Specifications 700,342, 700,443, 703,473 and 703,517.
Patent GB-227433-A (GB)
Title: Improvements in or relating to vehicle suspension
IPC: B60G11/02
Filed: 1924-12-29
Abstract: 227,433. Soc. Anon. des Etablissements Ballot. Jan. 12, 1924, [Convention date]. Laminar springs.-In a spring suspension comprising pairs of laminar springs 6, 7 secured to the axle 15 and connected to the frame 5 bv shackles 11, one spring 7 bearing the whole of static load and the other spring 6 acting as a shock absorber, the effective length of the spring- 6 may be varied by abutments 16 provided on the frame and the plates of each spring may beasynchronous.
Patent GB-299729-A (GB)
IPC: F01D15/02
Filed: 1928-10-29
Abstract: 299,729. Wach, H. Oct. 28, 1927, [Convention date]. Void [Published under Sect. 91 of the Acts]. Driving arrangements for screw propellers.- Reciprocating steam engine installations 1, particularly ships plant, are modified by adding an exhaust turbine 2 which is coupled to the shaft by gearing 9 and a fluid coupling 10. A preliminary condenser 5 and a steam air pump vacuum increaser 8 are connected with the main condenser 3. The coupling replaces the existing thrust block and a shorter block is fitted.
Patent GB-731626-A (GB)
Title: 2,2-diphenyl-3-substituted aminopropio-substituted amides and processes of making the same
IPC: C07D295/125
Filed: 1952-12-11
Abstract: The invention comprises compounds of formula <FORM:0731626/IV (b)/1> wherein R is a saturated hydrocarbon amino group, including acyclic and alicyclic amino groups, and R1 is a monocyclic aroyl, lower acyl or phenylacetyl group, or hydrogen; and acid addition salts and quaternary salts thereof.  "Lower acyl" means -CHO, and -COAlk, where "Alk" is an alkyl group containing from 1 to 3 carbon atoms inclusive.  Acid addition salts include the hydrochloride, sulphate, nitrate, oxalate, citrate and acetate; and quaternary salts include alkyl halide salts, e.g. the methyl, or ethyl, chloride, or bromide. The compounds are prepared by reducing (preferably with lithium aluminium hydride) a compound of formula <FORM:0731626/IV (b)/2> to the corresponding amine, which may then be reacted with an acylating agent (e.g. alkyl formates, or aliphatic or aromatic carboxylic acid halides or anhydrides) to form compounds in which R1 is an acyl group.  The examples describe the preparation of 2,2-diphenyl-3-dimethylamino-, 2,2-diphenyl-3-piperidino-, 2,2-diphenyl - 3 - pyrrolidino -, 2,2 - diphenyl - 3-(dimethylamino, piperidino or pyrrolidino)-N - formyl -, 2,2 - diphenyl - 3 - (dimethylamino, piperidino or pyrrolidino) - N - acetyl -, 2,2-diphenyl - 3 - (dimethylamino, piperidino or pyrrolidino) - N - propionyl -, 2,2 - diphenyl - 3-(dimethylamino, piperidino or pyrrolidino)-N-butyryl -, 2,2 - diphenyl - 3 - (dimethylamino, piperidino or pyrrolidino) - N - benzoyl -, and 2,2 - diphenyl - 3 - (dimethylamino, piperidino or pyrrolidino)-N-phenylacetyl-propylamine.
Patent GB-640533-A (GB)
Title: Improvements in and relating to circuit breakers
IPC: H01H9/34
Filed: 1947-11-28
Abstract: Coatings comprising a mixture of short fibre asbestos, e.g chrysotile and orthophosphoric acid are integrated with the aid of heat and pressure with ferrous members, e.g. iron arc shoot members of circuit-breakers.  A preferred mixture comprises 50 parts by weight of 85 per cent orthophosphoric acid and 100 parts of chrysotile asbestos.  Specifications 564,050, [Group XXXVII], and 593,515, [Group V], are referred to.
Patent GB-756825-A (GB)
Title: Therapeutic preparations effective against mastitis
Filed: 1954-11-02
Abstract: A therapeutic composition for the treatment of mastitis comprises at least one antibiotic, at least one sulphonamide and cobalt or a compound of cobalt.  Specified antibiotics include penicillin (especially procaine penicillin G and dibenzylethylene-diamine penicillin), streptomycin, dihydrostreptomycin, aureomycin and oxytetracycline.  Specified sulphonamides include sulphisoxazole, sulphathiazole and sulphamerazine.  The cobalt or compound of cobalt may be present in an amount from a trace up to for example 0,5 mg. per millilitre.  The composition may be suspended in a vegetable oil such as peanut oil containing a thixotropic agent such as aluminium monostearate, and instilled or infused into the infected udder. Several exemplary compositions are given, one of which comprises procaine penicillin G, dihydrostreptomycin sulphate, sulphisoxale, sulphathiazole and cobalt sulphate suspended in peanut oil containing aluminium monostearate.  Specification 716,556 is referred to.
Patent GB-474499-A (GB)
Title: Improvements in packing heads for wells
IPC: E21B33/06
Filed: 1936-11-18
Abstract: 474,499. Packing - heads for wells. TRIGGS, W. W. (Hydril Co.) Nov. 18, 1936, No. 31644. [Class 85] A packing-head for wells comprises a tubular housing adapted to take an elongated member through its bore, a packer in the housing adapted to be radially contracted. about said member, a support at one end of the packer, and fabric embedded in the packer and extending out therefrom for connection to the support. In Fig. 1, the two-part body 12 has an inner wall 22, with inclined parts 20, 21, leaving an annular space 18 to receive a piston 29 with pressure surfaces 36, 37, and a further pressure surface 38 open to the well and preferably less than surface 36 so that the same pressure on both surfaces gives downward movement of the piston. A rubber &c. packer 43 is arranged within the piston and fixed at either or both ends to the adjacent surface ; as shown, the packer is fixed by fabric 44 embedded therein and clamped to the wall 22 by screws 46 and a ring 45, the ring having on its lower face annular recesses into which the packer is forced on compression. Upward movement of the piston is limited by flanged screws 50 adjustably threaded to the piston. The piston is operated by gas or fluid pressure, e.g. the well pressure, controlled by a valve 57. In another form, Fig. 3, the body 60 is held to the casing by a threaded sleeve 68 so as to be removable without rotating the body, and the packer 66 is attached to the piston 63 and its upper end engages the tapered bore 80 of body closure 81 ; the closure may have a horizontal flange overlapping the upper end of the packer, the stroke-limiting screws 50 may be omitted and only the fluid supply pipe 55 need be provided. In other forms, the packer, secured either to the body or the piston and contracted by longitudinal compression as in Fig. 1, or by a tapering surface as in Fig. 3, is arranged for contraction by downward movement of the piston. Specification 471,732 is referred to.
Patent GB-791390-A (GB)
Title: Improvements in or relating to box-like enclosures with removable covers
IPC: H01H9/04
Filed: 1956-10-17
Abstract: 791,390. Multiple fastenings. SIEMENSSCHUCKERT (GREAT BRITAIN), Ltd., FLAX, S., and DIXON, B, J. Oct. 17, 1956, No. 31654/56. Class 44 '[Also in Group XXXVII] A flame-proof enclosure comprises a body A and a cover B having side flanges 2, 3 formed with projections 4, the edge of which facing the surface 5 form a wedging surface co-operating with similar wedging surfaces on projections 6 on the body A. The flanges 2, 3 also carry cylindrical members 8 which are rotatable by handles 7 and carry eccentric pins 11. To apply the cover to the body, the handles are turned vertically upwards and the pins 11. passed between pressure pads 12, 13 onthe body, until the cover surface 5 engages joint surfaces 1 on the body. Handles 7 are then rotated into the vertically-downward position whereby the pins and pads co-operate to move the cover downwards so that the wedging surfaces draw cover and body firmly together.
Patent GB-1481563-A (GB)
Title: Cracking catalyst and cracking process using same
IPC: B01J29/06
Filed: 1974-07-17
Abstract: 1481563 Cracking catalyst MOBIL OIL CORP 17 July 1974 [20 Sept 1973 8 Feb 1974] 31664/74 Healing B1E [Also in Divisions Cl and C5] A cracking catalyst in the form of particles suitable for use in a moving-bed or fluidisedbed cracking unit, comprises at least one component catalytically active for cracking of a mixed hydrocarbon feedstock in the absence of added hydrogen and having an average pore size sufficiently large to admit benzene, and a metal component which is a platinum group metal or rhenium or compounds thereof in an amount of up to 50 ppm metal based on the catalyst, the metal component being accessible to the feedstock. The cracking component may be silica in combination with one or more of alumina, magnesia or clay or a zeolite in a matrix of one or more of silica, alumina, magnesia, zirconia or clay. The metal component may be incorporated by ion-exchange or impregnation and may be deposited from a hydrocarbon feedstock containing a dissolved compound thereof, e.g. a metal diketone, metal carbonyl, metallocene, metal-olefin complex having 2 to 20 carbon atoms, metal-acetylene complex metal complex of alkyl- or arylphosphines or metal carboxylate of 1 to 20 carbon atoms. The metal component has the function of reducing the level of CO in the flue gases arising from regeneration of the catalyst by decarbonisation.
Patent GB-701914-A (GB)
Title: Improvements in and relating to stapling machines
Inventor: ARMSTRONG CHRISTOPHER JOHN
IPC: B25C5/16
Filed: 1950-12-30
Abstract: 701,914. Stapling. WALTER INSTRUMENTS, Ltd. Dec. 31, 1951 [Dec. 30, 1950], No. 31684/50. Class 89(3) In a stapling device comprising a base 1 carrying an anvil 2, and a pivoted arm 6 provided with a spring-raised driver plunger 11 and a staple magazine 16, the staples 24 are advanced by a pusher 25 controlled by a spiral spring 34 secured to a spindle 31 on which are mounted pinions 32 engaging with holes 33 in the magazine 16. The spindle 31 is mounted in L-shaped slots 30 in a housing 29 on the pusher and is normally held down by a spring clip 35 anchored at its rear end under lugs 40 and engaged at its front end with pins 39. Adjustment of the tension of the spring 34 may be effected by raising the clip 35 at its front end to allow the pinions 32 to be disengaged from the holes 33.
Patent GB-422300-A (GB)
Title: Apparatus for determining whether a vehicle has exceeded a particular speed in passing along a predetermined path
IPC: G01P3/68
Filed: 1933-11-15
Abstract: 422,300. Speed-indicators. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London, and CAMPBELL, N. R., c/o General Electric Co., Wembley, Middlesex. Nov. 15, 1933, No. 31863. [Class 106 (iii)] [See also Group XL] Apparatus for determining whether a vehicle or other object has exceeded a particular average speed in passing along a predetermined path comprises a combination of electric circuits made or broken by the interruption (by the vehicle) of beams of light, with electric circuits made or broken by a body falling freely a measured distance. Testing means may be provided comprising electric circuits made or broken by a freely falling body. A vehicle intercepting a beam of light A from a source LA to a photo-electric receiver PA breaks at contact A1 the circuit of an electromagnet M and releases a body J which falls freely through an adjustable distance l to break a contact R. If the vehicle interrupts the beam B from LB to PB before the body J breaks the contact R, an alarm device Q is operated by a circuit containing contacts A2, B2, R in series, but if the beam is interrupted after the body J breaks the contact R, it is not operated because the contact R is broken before the contact B2 is made. Accordingly, the alarm is only operated if the time of travel of the vehicle is less than the time of fall of the body J. Means are provided whereby the re-setting of the body J restores the original electrical conditions. Testing means are described comprising a body which on falling breaks contacts C1, thereby moving a shutter across the source LA, and which after falling a distance lm breaks a contact C2, thereby moving a shutter across the source LB. Where such testing means are employed, the operating means for the alarm may be a body with a constrained fall such as the motion of a pendulum. Several speed limits may be timed in a single operation by the provision of several contacts R in the path of the same falling body J or of different bodies J, separate alarm devices being provided. Dummy posts may be installed along the track enclosing or concealing the apparatus, so that the driver may be unaware that a test is being made. In a modification, both LA, LB and PA, PB are on the same side of the track, mirrors being placed on the other side.
Patent GB-1356136-A (GB)
Title: Steering system
IPC: B62D7/15
Filed: 1971-07-07
Abstract: 1356136 Vehicle steering mechanism INTERNATIONAL HARVESTER CO 7 July 1971 [7 July 1970] 31929/71 Heading B7H A steering system for steering the wheels 94, 294 on two axles 92, 292 of an aircraft tow tractor in two wheel, four wheel and crab steering modes from control stations 10, 11 at both ends of the vehicle comprises a directional control valve 50 operable from either control station 10, 11 for controlling fluid-actuated means for turning the wheels, a pair of mode control valves 62, 262 actuated by cylinders 64, 264 for controlling fluid flow from the valve 50, a pair of mode selector valves 70, 270 for directing fluid to the cylinders 64, 264, and a station selector valve 38 for rendering operative selec ted ones of the control stations 10, 12 and mode selector valves 70, 270. The cylinder 64, 264 controlled by the unselected valve 70, 270 automatically moves into a position in which its associated axle 92, 292 responds to the selected control station 10, 11 so that both axles can be steered from that station. The control stations 10, 11 include respective steering wheels 14, 214 for actuating hand pumps 12, 212, the selected one of which is connected to hydraulic actuators 32, 36 for the valve 50 through hand pump selector valves 20, 22 position by a cylinder 24 controlled by the station selector valve 40. The directional control valve 59 directs fluid from a pilot pump 54 through the mode control valves 62, 262 to sensing cylinders 100, 300 which are connected between steering arms 98,298 on the wheels 94, 294 and power steering valves 110, 310 controlling flow of fluid from main pumps 126, 326 to steering rams 116, 316. As described with reference to Fig. 2 (not shown) the vehicle has two engines and comprises in accordance with Specification 1,356,137 first and second pumps drivable by one engine, and third and fourth pumps drivable by the other engine, the first and third pumps and the second and fourth pumps serving as main steering pumps for the respective axles so that both axles are steerable when either engine is operating. The sensing cylinders are as described in Specification 1,356,138.
Patent GB-888103-A (GB)
Title: Machine for testing bearing for fatigue strength
Inventor: BURKE ANTHONY EDGERTON
IPC: G01M13/04
Filed: 1959-09-08
Abstract: 888,103. Bearings. GLACIER METAL CO. Ltd. Sept. 14, 1960 [Sept. 18, 1959], No. 31943/59. Class 12 (1). A machine for testing bearings has a test-shaft 34 carried by four supports 30 displaced from one another longitudinally and each carrying a test bearing 33, the supports are in pairs so that the bearings carried by one pair support the shaft against loads in one plane and the bearings carried by the other pair support the shaft in a plane which is at an angle to the first plane; two weights 37, or groups of weights, are mounted on the shaft 34 at longitudinally-spaced positions and have their centres of gravity displaced from the axis of the shaft 34 with the directions of their displacement differing by 180 degrees, the masses of the weight and the disposition of their centres of gravity being such that the rotating loads imposed by them on the shaft during rotation are approximately equal. The test-shaft 34, having the weights 37 clamped thereon, is driven by a shaft 8 via two universal joints 35 and a shaft 36 and the supports 30 are pivoted on pins 27 mounted in supporting- blocks 25, 26 carried by a base-plate 20 having a test-assembly mounted thereon. The test-assembly comprises a base-plate 20 clamped to a bar 10 by a damping member 21, Fig. 4, and bolts 22. The member 21, having a bore 23, receives a pillar support 11 which passes through a bore 16 in the bar 10, and a ball, positioned between hemispherical shaped faces of the support 11 and a block 15 inserted in the bore 16, facilitates rocking of the bar 10. The bar 10 is also supported at each end by two damping assemblies each of which comprises a radial arm 17, Fig. 5, welded, &c. to the bar 10 and flexibly-connected by a mounting 19 to a machine frame 18. In a modification the bar is omitted and two testassemblies are provided. The shafts 34 are arranged parallel to one another and the weights of one test-assembly are out of phase with those of the other test-assembly so as to counterbalance the transmitted forces. Lubricating oil is supplied to the test-bearings 33 through pipes 40, 42, connected by a pump 43 to a reservoir 44.
Patent GB-208716-A (GB)
Title: Improvements in or relating to the production of aluminium
IPC: C25C3/06
Filed: 1923-12-20
Abstract: 208,716. Aluminum Co. of America, (Assignees of Hoopes, W., Frary, F. C., and Edwards, J. D.). Dec. 21, 1922, [Convention date]. Alloys; dry processes of recovering copper; treating ores to remove undesired constituents.- A process of producing metallic aluminium comprises treating aluminium material other than chemically substantiallv to remove substances such as iron and titanium and thereafter melting other aluminous material in the presence of added material to produce aluminium alloy, and refining the alloy in a molten state to recover aluminium in metallic form therefrom. In step 1 of the process, the calcined material containing alumina with, as impurities, oxides of iron, titanium and silicon, is smelted, preferably with fluxes, in an electric furnace to obtain ferro-silicon and aluminous slag containing a little silica and iron and titanium oxides. In step 2, this slag is smelted in the presence of copper, with a reducing agent, for example, coke, to form an aluminium-coppersilicon alloy having a little iron and titanium. Silicon may be added if necessary. In step 2<a> the dross is removed leaving a clean alloy, low in iron and titanium, and in step 3 the aluminium is extracted electrolytically. In step 4, the copper is recovered for re-use in step 2, with preliminary slagging of impurities if necessary. To recover the copper for re-use, the molten residual anode alloy of the cell is poured from a vessel 51 through a furnace 52 into the path of an air-blast from a pipe 53. The solidified fragments are caught in a hopper 54 whence they are withdrawn through a shoot 55 having a sliding gate 56. Any iron and titanium remaining in the residue or alloy can be removed by slagging by the admission of air through the trunnions 57, pipe 58 and holes 59, so leaving pure copper.
Patent GB-652387-A (GB)
Title: An improved method of weighing out materials automatically
IPC: G01G13/00
Filed: 1947-12-04
Abstract: 652,387. Automatic-feed weighers. SIMON, W. G. Dec. 4, 1947, No. 31997. [Class 143] Coal, or other material varying widely in lump size, is weighed-out, e.g. into bags, by first delivering a weighed quantity which includes larger lumps, and then a make-up quantity of comparatively small lumps or particles. The larger lumps are delivered from a hopper 3 by means of an electromagnetic vibrator 9 and the make-up material from a hopper 4 by a vibrator 10, the material so delivered being received by a weigh-pan 1 on a weight-beam 2. In operation, larger lumps are first delivered by operating the vibrator 9 until the final weight is nearly reached whereupon the weigh-beam operates contacts 13 to stop the vibrator 9 and start the vibrator 10. The ensuing dribble feed from the hopper 4 continues until the weight is made up when the further movement of the weighbeam operates contacts 14 to stop the vibrator 10 and trip mechanism 16 to open the door 12 of the weigh-pan to discharge the coal into the empty bag. Whilst the door 12 is open, contacts 11 break the circuit to the vibrators but, when the empty pan returns, the door recloses and all contacts are restored so that a fresh weighing cycle commences. The hoppers 3 and 4 have adjustable gates 6 and 8 to regulate the flow.
Patent GB-968679-A (GB)
Title: Process for the direct preparation of practically spherical granular, uranium-containing material of a definite particle size
IPC: C01G43/025
Filed: 1960-09-16
Abstract: A uraniferous precipitate of complex composition containing UO2+ +, SO4-, NH4+ and OH-, in the form of spherical particles easily convertible to UO2, is formed by treating a uranly salt solution, especially the nitrate, with ammonia and ammonium sulphate in succession, so that the final pH is 2-3.  The ammonia addition is in an amount less than that necessary to produce an instantaneous lasting precipitation and the ammonium sulphate, preferably added as solid, should be capable of being dissolved by vigorous agitation before precipitation commences.  The final pH in the range 2-3 is critical and the relative amounts of ammonia and ammonium sulphate must be so chosen that the critical pH is attained thereby ensuring a precipitate the particles of which at 500X magnification, appear substantially spherical and smooth.  The critical pH can be lowered if it be too near pH 3 by the addition of an ammonium salt of the same acid radical as the uraryl salt, before the addition of the ammonia.  The uraniferous precipitate may be leached free of ammonium sulphate with aqueous ammonia, dried, and reduced with hydrogen to yield UO2.  Preheating the ammonia leach to 40 DEG  C. and the precipitate to 100-150 DEG  C. is conducive to increased porosity of the final UO2. Specification 753,399 is referred to.